HomeMy WebLinkAbout _ 9.5(c)--2026 Wildfire Mitigation Plan Update GI �" Y C� F
� � �- ' � ° � � i � CITY OF REDDING
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REPORT TO THE CITY COUNCIL
MEETING DATE: August 18, 2026 FROM: Nick Zettel, Director of
ITEM NO. 9.5(c) Redding Electric Utility
***APPROVED BY***
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nzettel@cityofredding.org mwebb@cityofredding.org
SUBJECT: 9.5(c)--Consider Approval of Redding Electric Utility's 2026 Wildfire Mitigation
Plan
Recommendation
Authorize and approve the following actions regarding Redding Electric Utility's (REU) 2026
Wildfire Mitigation Plan:
(1) Approve REU's updated and revised 2026 Wildfire Mitigation Plan pursuant to
California Senate Bill 901;
(2) Accept the 2026 Independent Evaluator's Report prepared by gualified independent
evaluator Dudek pursuant to California Public Utilities Code Section 8387(c); and
(3) Find that this activity is exempt from review under the California Environmental Quality
Act,pursuant to Section 15061(b)(3)—Common Sense Exemption.
Fiscal Impact
There is no fiscal impact associated with this item. The requested actions approve revisions to
Redding Electric Utility's (REU) 2026 Wildfire Mitigation Plan and accept the 2026
Independent Evaluator's Report; they do not authorize new expenditures, budget amendments,
contracts, staffing changes, or capital commitments. The activities and level of service outlined
in the 2026 Wildfire Mitigation Plan are already incorporated in REU's adopted biennial budget.
Should future plan implementation require additional fiscal resources beyond those already
approved, staff will return to council with a separate report for consideration.
Alternative Action
Council may reject staff's recommendation and provide alternative direction.
Report to Redding City Council August 12,2026
Re: 9.5(c)--2026 Wildfire Mitigation Plan Update Page 2
Background/Analysis
Cali�ornia Senate Bill 901 became law in September 2018 and requires electric utilities with
overhead electrical infrastructure in high fire threat zones to prepare plans and implement
wildfire mitigation efforts. California Public Utilities Code Section 8387(b)(2) establishes the
requirements for local publicly owned electric utilities, and Section 8387(c) requires a qualified
independent evaluator to review each plan and present the findings to the electric utility's
governing board.
REU's first Wildfire Mitigation Plan program was approved by City Council on May 7, 2019;
three additional programs were approved on December 3, 2019. City Council has approved
annual updates each subsequent year, most recently on May 20, 2025. In 2026, revised submittal
requirements shifted from annual filing to once every two years under a staggered Wildfire
Safety Advisory Board schedule.
REU's 2026 Wildfire Mitigation Plan is due to the Wildfire Safety Advisory Board by October
2, 2026, and the next required submittal will occur in 2028. The plan organizes ll programs
across governance, risk intelligence, operational risk reduction, capital risk reduction, and
customer and community resilience. It also adds an Operational Decision Support program and
enhances the Public Safety Power Shutoff framework.
In 2025, REU achieved its strongest wildfire mitigation outcomes in the five-year reporting
period. Utility-attributed wildfire ignitions fell to one, an 89 percent red�uction from nine in 2021.
Vegetation inspections achieved 100 percent coverage across transmission and distribution
systems, staff trimmed 8,602 trees, completed all pole base clearance by May, treated 512 acres,
and reduced priority-one vegetation defects from 286 to 163.
As reguired by Public Utilities Code 8387, REU engaged Dudek to conduct an independent
evaluation of the plan. Dudek concluded that the plan is comprehensive, addresses each required
Public Utilities Code Section 8387 element, reflects an appropriate understanding of wildfire risk
in REU's service territory, and demonstrated a proactive, risk-informed approach to wildfire
prevention, operational readiness, and system resiliency. Following City Council approval, staff
will submit the plan by the required deadline.
Environmental Review
Staff has reviewed the action and determined that it is exempt from review under the California
Environmental Quality Act (CEQA) pursuant to Section 15061(b)(3) — Common Sense
Exemption. CEQA applies only to actions which have the potential for causing a significant
effect on the environment. The action has been reviewed and it can be seen with certainty that
there is no possibility that the activity may have a significant effect on the environment;
therefore, the activity is not subject to CEQA.
Report to Redding City Council August 12,2026
Re: 9.5(c)--2026 Wildfire Mitigation Plan Update Page 3
Council Pr�iority/City Manage� Goals
• Public Safety — "Work to improve all aspects of public safety to help people feel secure
and safe where they live, work, and play in the City of Redding."
• Government of the 21st Century — `Be relevant and proactive to the opportunities and
challenges of today's residents and workforce. Anticipate the future to make better
decisions today."
Attachments
2026 Independent Evaluator's Report
REU 2026 Wildfire Mitigation Plan
NOE Wildfire Mitigation Plan Update
N � 1 �
r
Reddin Ele�c�t�i� Utili 2tJ2b-
�
Prepared for:
I I TI I
3611 Avtech Parkway
Redding, CA 96002
Contact: Nathan Aronson
Prepared by:
687 S. Coast Nighway 101, Suite 110
Encinitas, California 92024
Contact: Jeremy Cawn
� . � :
1 .
Acronymsand Abbreviations........................................................................................................................... iii
1 I ntrodu ction........................................................................................................................................5
1.1 Scope and Intent....................................................................................................................5
1.2 Changes to the WMP Submittal Process...................................................................................5
1.3 Qualifications of the Independent Evaluator..............................................................................6
1.4 Assessment Methods..............................................................................................................6
2 REU Service Territory...........................................................................................................................7
2.1 REU Service Territory Fire Environment Summary......................................................................7
2.2 Fire Hazard Severity Zones......................................................................................................7
2.3 High Fire Threat Districts.........................................................................................................8
3 Independent Evaluator Review of Regulatory Compliance......................................................................8
4 Wildfire Mitigation Strategy Review and Understanding.......................................................................10
4.1 REU's Understanding of Wildfire Risk in its Service Territory.....................................................10
4.1.1 Ignition Probability....................................................................................................11
4.1.2 Ignition Pathways......................................................................................................11
4.1.3 Risk Timing and Escalation ........................................................................................12
4.1.4 Consequence and Suppression..................................................................................12
4.2 REU Wildfire Risk Mitigation Strategies...................................................................................13
4.3 REU Public Safety Power Shutoff............................................................................................15
5 Wildfire Mitigation Strategy Execution.................................................................................................16
5.1 Elevated operating states......................................................................................................16
5.2 Wind observations exceeding REU established thresholds (>20 mph).......................................16
5.3 WMP Tracked Event Metrics..................................................................................................16
5.4 Vegetation Inspection and Management.................................................................................17
5.5 Asset Inspection and Corrective Actions..................................................................................17
5.6 System Hardening�/Upgrades.................................................................................................17
6 Conclusion.......................................................................................................................................18
7 References.......................................................................................................................................20
� �
Table 1. PUC 8387(b)(2) Required Element Table and Location in REU WMP......................................................8
Table 2 REU Wildfire Risk Driver to Risk Mitigation Strategy Comparison ..........................................................13
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REU Redding Electric Utility
WUI Wildland Urban Interface
WSAB Wildfire Safety Advisory Board
OEIS Office of Energy Infrastructure Safety
CPUC California Public Utility Code
WMP Wildfire Mitigation Plan
PG&E Pacific Gas & Electric
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Publicly owned electric utilities and electric cooperatives in California are required to construct, maintain, and
operate their electrical equipment in a manner that minimizes the wildfire risk posed by this equipment. This
requirement includes preparing a Wildfire Mitigation Plan (WMP) that documents the utility's understanding of
wildfire risk and risk drivers in its service territory, as well as the wildfire risk-reduction strategies it uses to mitigate
these risks. Publicly owned electric utilities and electric cooperatives are further required to have their WMP
evaluated by a qualified independent evaluator with experience in assessing the safe operation of electrical
infrastructure.
Dudek's fire prevention team worked with the Redding Electric Utility (REU)to review their current WMP, evaluate
their ongoing and new wildfire mitigation strategies, and prepare this Independent Evaluator's report for the
Redding Electric Utility's 2026-2029 WMP.
1 .1 c n Int t
Dudekworkedwith REUtopreparethislndependentEvaluator'sreporttosatisfytherequirementsofPublicUtilities
Code (PUC)8387(iii) (c).This Independent Evaluator's report is specific to the 2026-2029 REU Wildfire Mitigation
Plan. Itcontains a review of the elements within WMP as well as the results of our review of data provided bythe
REU and from publicly available data sources regarding wildfire risk in REU's service territory and REU's wildfire risk
reduction strategies. Dudek's review of the REU WMP assessed the following elements:
i. Regulatory Requirements
ii. REU's understanding of the wildfire risk and risk drivers in its service territory
iii. REU's wildfire mitigation strategies
This independent Evaluator's report intends to satisfy the requirements of the PUC and provide REU with an
assessment of the comprehensiveness of its WMP. Recent guidance from the California Wildfire Safety Advisory
Board (WSAB) indicated that its currentfocus areas are risk identification and preemptive de-energization (WSAB
2025). Therefore, Dudek's independent evaluation of REU's WMP also focuses on risk identification and pre-
emptive de-energization.
1 . s t t itta I r e ss
The Wildfire Safety Advisory Board published several guidance documents at the end of 2025 and in early 2026
that included information about changes to the WMP submittal process for publiclyowned electric utilities. Changes
to PUC 8387 revised submittal requirements for POU WMPs from yearly to every two years. To spread out WMP
review workloads, the WSAB modified the submission dates for WMPs from POUs. The WSAB's new guidance
establishes a staggered submittal process in which a select group of POUs submits their WMPs each year for WSAB
review. The WSAB published thefinal WMP submittal schedule in March 2026, with submittal schedules for more
than 50 California public electric utilities.The state's public utilities were divided into groups, and each group was
assigned a final submittal date for the 2026-2029 version of the utility's WMP in the first week of October. The
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Redding Electric Utility is in the group whose WMPs are due for submittal on October 2, 2026. Under the new WMP
submittal guidance, REU will not be required to resubmit its WMP to the WSAB for review until 2028.
The changes to the WSAB submittal schedule do not affect the requirement in PUC 8387(b)(3)to present its WMP
at an appropriately noticed public meeting to accept comments from the public and other agencies. Before
submitting its 2026-2029 WMP, REU staffi will present their WMP at a public meeting.
1 . u lific ti ns f t e In e ent v lu t r
PUC 8387 (C) states that a public electric utility must contract with a qualified independent evaluator with
experience assessing the safe operation of electrical infrastructure to review and assess the comprehensiveness
of its WMP.
Dudek's Fire Prevention Planningteam has prepared independentevaluator reports,wildfire risk assessments,and
wildfire mitigation plans for publicly owned electric and water utilities and independent transmission operators
sincethe State of California began requiringthese plans for publiclyowned utilities in 2019. Additionally, Dudek
has worked with and prepared fire-prevention planning documents for new energy projects across California and
the Pacific Northwest. Our Fire Prevention Planning Team includes National Fire Protection Association Certified
Wildfire Mitigation Specialists and Fire Protection Engineers.
1 . sS SS t t S
Dudek fire prevention planners prepared this independent evaluator's report using REU's draft 2026-2029 Wildfire
Mitigation, as well as the following documents and datasets from REU:
• Draft PSPS Circuit Recommendations
• Outage Data tables
• Fire Incident and Wires Down Data tables
• Emergency Operations Data tables
• WMP Metric Data tables
• GIS datasets of REU circuits and facilities.
These datasets, in combination with the REU 2026-2029 WMP,were used to evaluate REU's serviceterritory,utility-
ignited wildfires, and potential ignition events, and wildfire risk drivers described in the WMP. Dudek also utilized
publicly available datasets including:
• Weather and climate data (FEMS, WFTIIC, IEMS)
• Fuels and Fire Danger data (FEMS, WFTIIC)
• Local Fire History (CA� FIRE)
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• PG&E Local Fire History (CPUC)
These datasets were used to assess the fire environment in REU's service territory and to verify the fire risk factors
described in the WMP independently.
I
.1 rvi c rrit r i r nvi r nt u ry
Redding Electric Utility's service territory covers 61 square miles within the Reddingcity limits. Due to a combination
of terrain, vegetation, and weather conditions, REU's service territory experiences frequent wildfires in the sumrr�r
and fall. REU's serviceterritory and the City of Reddingcover an area of the northernmost portion of the Sacramento
Valley. The Redding city center occupies the relatively flat valley bottom on either side of the Sacramento River.To
the east and west of the Sacramento River,the terrain rises and becomes more rugged, and is characterized by
hillsides and ridgelines bisected bysteep drainages and canyons.Vegetation cover varies; REU's serviceterritory
contains a large Wildland Urban Interface area (62% of the service territory). Outside the highly urban city center
west of the Sacramento River, there are very few areas in REU's serviceterritory without a mix of developed and
undeveloped areas. Instead,there is a transition to the east and west of the Sacramento River, where the amount
of open space or undeveloped land gradually increases farther from the river. Undeveloped and open space areas
contain a mix of Blue Oak Woodlands, Blue Oak-Foothill Pine Woodlands, Mixed Chaparral, and annual grasslands.
Blue Oak Woodlands and Blue Oak-Foothill Pine Woodlands are the predominant vegetation cover types. These
woodlands typically contain a continuous understory of grass and leaf litter, which can readily ignite and carry fire
when weather conditions are conducive to fire growth. These woodlands also include an understory component of
the shrub species found in the Mixed Chaparral areas (e.g., Manzanita spp.), which, combined with the grass/leaf
litter layer and the low canopy of the blue oak, forms a pathway (e.g.,fuel ladder)for surface fires to transition into
the tree canopy(City of Redding 2024). Redd ing, like most of the Sacramento Valley, experiences hot, dry su mmers
and cool, wet winters. Fireseason in Redding,the period oftheyearwhen wildfires occur mostfrequently based on
historical fire occurrence, begins in early summer, when the grasslands fully cure, and lasts through the fall, with
the onset of the cooler, wetter period and the first wetting rains (NWCG n.d.). Fire season peaks, based on the
occurrence of red flag warnings issued by the National Weather Service, from July through October (IEMS n.d.).
The Redding area has experienced numerous wildfires with overlapping historical fire perimeters in the
mountainous terrain to the north, east, and west of the city center. The mountains to the west of the city have
experienced the mostfrequentfires (CAL FIRE 2026).The mostsignificant recentwildfires werethe 2018 Carr Fire,
whose perimeter included a portion of the city's west side and resulted in the destruction of more than 1600
structures and 7 deaths, and the 2021 Fawn Fire,whose perimeter included a portion of the city's north side and
resulted in the destruction of 185 structures (CAL FIRE n.d)
. i r z r v ri�ty s
CA� FIRE designates areas in the state where there is an increased wildfire hazard based on previous fire
occurrenceand anticipated fire behavior.Theareas with increased fire hazard are designated as fire hazard severity
zones (FHSZ). They are present within a significant portion of REU's Service territory, covering almost the entire
perimeter of the serviceterritory except for a small section at the south end near Interstate 5. FHSZs extend from
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the city limits towards the city center and the Sacramento River along the partially developed ridgelines and canyons
on the north, east, and west sides of the service territory. Very High Fire Hazard Severity Zones are present along
the north and west side of the service territory where heavier vegetation is common and more continuous, and
there is a more frequent occurrence of wildfire(CAL FIRE, n.d.).The majority of REU's overhead circuits extend into
an FHSZ, with only the Canby (1201, 1202, 1203, 1204), Canby (1701, 1702, 1703, 1704), and Canby (2401,
2402, 2403, 2403) substation circuits located outside of an FHSZ(REU 2026).
. i ir r at istricts
The California Public Utilities Commission (CPUC) designates areas with an increased risk of utility-associated
wildfires as High Fire Threat Districts. Like the FHSZ, a significant portion of REU's serviceterritory, includingthe
areas west of State Route 273 (Market Street) and east of Stillwater Creek, is designated as either Tier 2 or Tier 3
High Fire Threat Districts (HFTD). The west side of REU's service area contains all Tier 3 (extreme risk)areas. Like
the FHSZ maps,the majority of REU's overhead circuits extend into an HFfD, with only the Canby (1201, 1202,
1203, 1204), Canby(1701, 1702, 1703, 1704), and Canby(2401, 2402, 2403, 2403) substation circuits located
outside of an FHSZ(REU 2026).
I
Public Utility Code (PUC) Section 8387 creates two requirements for each publicly owned electrical utility (POU} in
California. First, each POU is required to construct, maintain, and operate its electrical lines and equipment in a
manner that minimizes the risk of wildfire. Second, each POU is required to prepare a wildfire mitigation plan and
submit it to the California Wildfire Safety Advisory Board (WSAB) at least once every four years.
PUC 8387 contains several subsections that outline the elements required in Wildfire Mitigation Plans prepared by
POUs. Publicly owned utilities have been preparing WMPs since 2019, and with support from power agency
associations, have successfully produced WMPs that contain the WMP elements required by PUC 8387(b)(2) for
several years.Table 1 lists each PUC 8387(b)(2) required element and where it can be found in the 2026-2029
REU WMP.
I . ( �( ) ir I t I i i
' : : : : - • - • " • • •
• • • - • • ' . • - •
(b)(2)(A) Person responsible for executing 2.4; 3.1; 3.1.1, Page Roles and
the lan 19-20,21-22 Res ansibilities
.MMMMM. _�M ._.�wM
(b)(2)(B) Objectives of thewildfiremitigation 2.1; 2.3, Page 15-17 Plan Objectives
plan and Portfolio
Arch itectu re
1 REU's 2026-2029 WMP contains all of the PUC 8387 required elements.
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' : � " : : - • - • ' • • •
• • � - • • ' . • - •
(b)(2)(C) Identificatian and prEoritization af 4.1-4.4; 5.1-5.3; 6.1- Risk Assessment
risks; preventive strategies 6.3; 7.1; 8.2, Page and Mitigation
28�1, Page 42-56, Programs
e 7- , a e
_........ _............ ............. _�________� __ __�_ ___
(b)(2)(D) Evaluation of plan perFormance, 10.1-10.10, a e Perfarmance
including metrics 74-82 Evaluafiion and
Metrics
._.. ...._________.— ._..__________�._______ _________ ____________ ______._____ ._____—�__ „___�___ __ .
(b)(2)(E) Description of how metrics info 2.3; 10.4-1Q.10; Continuous
plan improvements 12.4, Page 17, Improvement and
Page 7$-82, Page Lessons Learned
92-93
� _.............._ _____............. _._... �__. �._.
(b)(2)(F) Protocols for de-energizatian 4.1.3; 4.1.5; 5.3; $.2 PSPS and
e Operational
______.........._.......
Cantrols
(b)(2)(G) Pracedures for customer 8.4; 8.5 Page 68-69 Customer
notification before, during, and Notification and
after de-ener ization Outreach
_..._ ...__........ ..._.MMMMM. .M�. ... _______ ___._._.M ....
(b)(2)(H) V�getation management ac�ivities 5.1 Page 42-48 Vegetation
' and protocols anagement
Program
.....___ — ___....... �_ __ _........__ _.....___ __ _....___�__ ___ _.._________ .._.___�.� ,___�__..____..w.�
��(b)(2)(f) Inspections and maintenance of 5.2 Asset Inspection
' electrical infrastructure Program
.M�___. � .. _....
(b)(2)(J) A listthat identifies,describes,and 4.1-4.3, Page 28-4Q Wildfire Risk and
' prioritizes all wildfire risks, and Risk Analysis
drivers for thase risks, throughout
' the local publicly owned electric
utility's or electrical caoperative's
service territory.
b 2 J � Risks an �_��.� �.__�w...� �wm�m__.w ..,..,.m_m_ .___m__m__m_w......................................_m__.�._
� __�_�_mw._._mm__
O( )( )(') d risk drivers associated 4.1, Page 28-35 Wildfire Risk and
wifih the design, construcfiian, Risk Analysis
aperation, and maintenance of the
electric utility's equipment and
facilities.
_.,_�_ __�_.._ _....._� �.___ ________—_ �__...._____.. __
(b)(2)(J)(ii) Part�cular risks and risk drivers 4.2 & 4.3, a e 3 - Wildfer� Risk and
associated with topographic and 40 RiskAnalysis
climatalogical risk factors
throughaut the different parts of
the electric utility's service
territory.
b 2 K Identificatio.n.,.,of a ,.�Wm__m__m__m__m______��.____m__m__m__m__m__m__m__m
.,__ ..
O( )( ) ny geographic 1.1-1.2; 3.3.5; 4.2 Geograph ic Risk
area in the local publicly owned Page 36 Profile
eiectric utility's or electrical
cooperative's service territory that
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' : � " : : - • - • ' • • •
• • � - • • ' . • - •
is a higher wildfire threat than is �
identified in a commissian fire
th reat map
..................................................... .m��_m �.___....._____�__.........................______ �_m........................................................................_...........................
(b)(2)(L) A methodology for identifying and 4.1.1-4.1.5; 4.2; 4.3; Risk Assessment
presenting enterprise-wide safety 4.4 Methodolagy
risk and wildfire-related risk
....(b)(2)(.IVI)...................m_...Pracedumres�m�for ..� restoration of M8m.3 Page 67-68................... Post-Fire������.............
service after de-energizatian or Restoration and
wildfire-related outages Recovery
....�.� .....
(b}(2)(N) Monitoring ar�d auditing af plan 3.1.4; 9.1; 9.2; 9.4; Campliance,
implementation 10; 12.4; 13.3 Page Monitoring, and
21-22, Page 70, Independent
a e 7 - 3, a e Evaluafiion
- 3,
I I II I I
The role of the Independent Evaluator according to PUC 8387 (c) is to "review and assess the comprehensiveness
of (the utility's) wildfire mitigation plan." Dudek's understanding of this text includes a requirement to assess
whether the utility:
A. Understands the wildfire risks present in its service territory.
B. Understands the specific wildfire risks associated with its equipment and operations.
C. Implements effective mitigation strategies to address these risks.
.1 's rst n in f il fir is i its rvic
T rrit r
REU's 2026-2029 WMP does not divide wildfire risk and risk drivers into two categories described in CPUC
8387(b)(2)Q); rather, Section 4 of the WMP describes four key wildfire risk drivers in REU's service territory: ignition
probability, ignition pathways, risk timing and escalation, and consequence and suppression. Each of these risk
drivers contains elements associated with both REU's equipmentand facilities as well as elements associated with
climate and topography in REU's service territory
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4.1 .1 Ignition Pro ability
Risk Driver 1,Ignition Probability,is based on more than 20 years of weather observations of sustained wind speeds
in REU's serviceterritory as measured at the ReddingAirport RAWS and historical outage data for the same time
period. REU links sustained wind speeds over 20 MPH with an increased likelihood of outage and equipmentfault,
and thus an increased likelihood of an ignition event.
Sustained winds in excess of 20 MPH are not a common cause of outages nor a common driver of electrical
equipment fires or ignition events; 77 out of 914 recorded outages and 6 out of 77 event metrics in REU service
territory are attributed to winds. However, based on historical outage records,the potential for outages increases
as winds exceed 20 MPH. High winds are also a common factor in large, destructive fires in the region, with the
2018 Carr Fire, 2020 Zogg Fire, and 2021 Fawn Fire experiencing significantfire growth and extreme fire behavior
driven by high winds (CAL FIRE n.d.). Because Risk Driver 1 is focused on sustained wind speed and not other
factors influencingfire spread,Risk Driver 1 is not a measure of the likelihood that REU equipment ignites a wildfire;
rather, it is a measure of the likelihood that an event that can create a spark, arcing, or other condition thatwould
ignite nearby vegetation when conditions permit. Risk Driver 2 addressesthe potential for a fire to start and spread.
.1 .2 i n�t�On Pat ay�
REU utilizes a three-stop methodology(baseline mapping,desktop analysis with expert review, and field verification)
to determine Risk Driver 2: Ignition Pathways. This methodology entails integration of CAL FIRE Fire Hazard Severity
Zone maps, CPUC High Fire-Threat District designations, aerial imagery, GIS data, multidisciplinary expert review,
and field verification to determine areas where vegetation density, fuel continuity, and terrain conditions may
enable an equipment fault to ignite and propagate as a wildfire.
Concerning baseline mapping, and as mentioned above in Section 2.2, Fire Hazard Severity Zones, and Section
2.3, High FireThreat Districts, ofthis report, REU serviceterritory is located within CAL FIRE designated Fire Hazard
Severity Zones(FHSZs)and CPUC designated Fire Threat areas.The majority of REU's overhead circuits extend into
an FHSZ. Baseline mapping identifies REU circuits and facilities in a FHSZ. Desktop analysis affirms the presence
of topography and vegetation associated with the CAL FIRE FHSZ and CPUC HFTD classifications. Terrain within
urbanized environment is predominantly flat, which is reflective of the city's location in the far north end of the
Sacramento Valley; however, elevation rises toward the direction of the Coast ranges to the west,the Sierra Nevada
foothills to the east, and north where both ranges converge and where the foothills of the Cascade mountain range
(City of Redding 2024a, USGS 2021, USGS 2023a, USGS 2023b, USGS 2023c). Vegetation associated with blue
oak woodland, blue oak foothill pine, mixed chaparral communities, and annual grassland make up much of the
vegetation communities present and overlapping with FHSZs and HFTDs within the service boundary(CA� FIRE
2022 and City of Redding 2024b).
Although the WMP notes that field findings supersede desktop assessments,specific field visit locations were not
provided for verification. However, Section 5, Operational Risk Reduction Programs, of the WMP details three
programs—the Vegetation Management Program, the Asset Inspection Program, and the T&D System Operational
Practices—that keep REU's infrastructure in a fire-safe state year-round, reducing ignition risk during the most
severe weather.The results of implementing these programs are further described in Sections 10.4,10.5, and 10.6
of the 2026 WMP.
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The elements reviewed by Risk Drivers 1 and 2, combined, provide an assessment of the potential for ignition and
fire spread. They do not include weather conditions beyond sustained wind speeds. Risk Driver 3 incorporates
additional weather observations critical to determining fire risk.
4.1 .3 isk Ti in an Escalation
Risk Driver 3, Fire Weather Risk Timing and Escalation, integrates real-time and forecast fire weather data that
includes all key fire weather elements (e.g.,temperature, relative humidity, wind direction, wind speed, etc.) Risk
Driver 3 incorporates a custom Fire Potential Index based on national fire danger rating components (Energy
Release Component and Burning Index), which are themselves derived from forecast weather and fuel moisture.
Whereas Risk Drivers 1 and 2 evaluate ignition event potential and fire severity and spread potential based on fuel
loads and structure,Risk Driver 3 evaluates the conditionsthat influence fire severity and spread based on weather
and fuel moisture.
Combined, Risk Drivers 1 through 3 create a comprehensive picture of wildfire risk in REU's serviceterritory that
includes the risk of a REU-equipment-ignited wildfire.
4.1 . Consequence and Sup ression
Risk Driver 4 evaluates the consequences of a REU equipment-ignited wildfire. REU evaluates consequence by
analyzing community exposure (proximity to residences, critical facilities, and evacuation routes), suppression
resource availability (fire station locations, response times, and staffing), and terrain accessibility using CAL
FIRE/CPUC maps, aerial imagery, GIS data, multidisciplinary expert review, and field verification. These inputs are
used to assign consequence tiers that reflect the potential impacts of an ignition event and the ability of
suppression resources to access and contain a wildfire under varying conditions effectively.
Risk Driver 4 is based on qualitative assessments by subject matter experts (e.g., Redding Fire Department
personnel) and is significantly influenced by the fire location's accessibility and the availability of local fire
suppression resources.
Taken together, REU's 4 risk drivers provide the utility with a comprehensive understanding of wildfire risk in its
service territory,includingthe risk that its equipment could start a wildfire and the consequences ofan REU wildfire.
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. il fire isk iti ti tr t ies
As identified in Section 4 of WMP, REU's equipment potential to ignite a wildfire (and be impacted by nearbywildfire}
is a combination of area environmental conditions, specifically the combination of a prolonged summer-fall fire
season with high wind events and the location of a large portion of REU distribution and transmission equipment in
a high wildfire hazard area. The risk of REU's equipment igniting a wildfire is the highest duringthe peak of fire
season,August-October,when the combination of weather and dry vegetation/fuel conditions is most likely to resuft
in an ignition event starting a fast-moving and difficult-to-suppress fire.
REU deploys several wildfire mitigation strategies intended to reducethe risk of its equipment starting a wildfire.
One of the most significant changes from previous versions of REU's WMP is the inclusion of a robustsituational
awareness program (Operational Decision Support(ODS)Program). This increased situational awareness includes
daily wildfire outlooks during periods of higher fire danger and real-time weather and fire-danger forecasts during
elevated events. The products of the ODS inform REU's operational states; since 2020, REU has recorded 67
operational alert-level activations (Levels I or I I)and only one level I II activation (active emergency}.Twenty-three of
these were dueto increased extreme fire danger and five dueto an active wildfire in the Reddingarea. In addition
to enhanced situational awareness capabilities, REU implements operational and capital risk-reduction strategies.
Operational risk reduction strategies include its well-established vegetation management program and asset
inspection programs. Capital risk reduction strategies include a suite of equipment hardening programs that have
continued to expand in scope from the 2023 WMP. Table 2 lists the wildfire risk drivers in REU's service territory
and the mitigation strategies that impact its overall risk.
I i ir is ri r i i i ti r t ri
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• � .
t�� � . � � �o� � te ,�� , ` ,, ,, ,y4 � , � , ., � ,,,�,�,,y ,�G
Vegetation Management Ignition probability, Vegetation contact with REU completes
(Line Clearance) Ignition pathways wires is the most vegetation
common fire/ignition inspections on all
event, accounting for T&D lines annually.
20% of utility-caused
fires/ignition events
but less than 1% of
outages.
Vegetation Management Ignition pathways, Pole clearance and fuel REU completes pole
(Pole Clearance and Fuel consequence, and reduction don't clearance annually
Reduction) Suppression eliminate fire risk but before start of peak
reduce the likelihood of fire season
rapid fire growth at
ignition point. Limits
fire intensity and
duration near poles
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, • -� • ' - • • • , ,
� �
Asset Inspection Program Ignition probability, Equipment failure REU completes asset
Ignition pathways accounts for 15% of inspections on all
utility-caused T&D lines annually.
fires/ignition events
and 20% of outages.
T&D System Operational Ignition probability, Operating states and PSPS activation is
Practices Ignition pathways, Risk Alert �evels are based informed by fire risk
Timing and Escalation on wildfire risk and weather
.�_. __ __ forecasts.
PSPS Ignition probability, REU has de-energized Recorded de-
Ignition pathways, Risk lines 7 times in energization events
Timing and Escalation response to requests are not due to REU
from the fire equipment causing a
department due to a fire.
nearby incident
� � ' � o- � r
System Hardening Program Ignition probability, Equipment failure Arc-suppression
Consequence and accounts for 15% of devices address fires
Suppression utility-caused caused byequipment
fires/ignition events. failure; wildfire
Animal contact protection addresses
accounts for%10 of fires caused by
utility-caused animal contact.
fires/ignition events
Fire Mitigation System Ignition probability, In the evaluation
Upgrades Program Consequence and phase, no mitigation
Suppression was done.
Fire Retardant Pole Wrap Ignition probability, Six (out of 77)recorded Pole wrapping
Ignition pathways, Risk instances of REU wood addressing risk of
Timing and Escalation, poles being damaged pole/lines being
Consequence and by wildfire or structure damaged by fire only.
sUppression fires near poles.
� � � A w o �
Operational Decision Ignition Probability, Risk 56%of alert levels and Informed by weather
Support Program Timing and Escalation, operating state forecast and fire
Consequence and changes due to Red danger forecast
Suppression Flag Warning, 10% due
to wildfire
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, • -� • ' - • • • , ,
� �
Situational Awareness Ignition Probability, Risk No records of listed
Technology Timing and Escalation technologies being
involved with fire
detection or
prevention
. u I i c a ty r t ff
REU, like many POUs, views Public Safety Power Shutoffs as a last resort. However, REU has continued to develop
its PSPS program since the publication of its first WMP in 2020, when it was limited and implemented only at the
request of emergency services during an active incident.The current PSPS program described in the 2026-2029
WMP is integrated into REU's operating states and alert-level framework,so that the use of a PSPS is assessed and
REU's preparedness to implement one is begun well before any PSPS is implemented. The WMP describes the
REU's PSPS implementation sequence, including staff responsibilities and the implementation timeline, as well as
restoration when the PSPS is no longer necessary.
The Wildfire Safety Advisory Board (WSAB) December 2025 guidance provided specific recommendations to REU
to add more detail in its WMP regarding the potential use for a PSPS, including (OEIS 2025):
1. describe the data and data sources used to make that decision;
2. describe the procedures to collect data and verify those data are accurate and up to date;
3. identify parties responsible for making a decision and the criteria used
4. describe the necessary actions to implement a de-energization and the parties responsible for executing
them;
5. define the "extreme fire event" under which it would make a real-time decision whether to de-energize.
Sections 4.4 and 5.3 in REU's 2026-2029 WMP address the WSAB recommendations 1-4. Recommendation 5 is
addressed in Section 4.1 and in REU's operating states table, Table 4-2a.
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I I � ' �
Section 10 of REU's 2026-2029 describes the utility's accomplishments in 2025. Section 10 describes the
following:
• Elevated operating states
• Wind observations exceeding REU established thresholds (>20 mph)
• WMP tracked event metrics
• Vegetation inspection and management
• Asset inspection and corrective actions
• System hardening,/upgrades
. 1 I vat r tin s� t s
REU recorded 99 operating state changes in 2025, with the majority being a change from OSO (normal operating
conditions)to OS1 (elevated fire risk). Only 5 operating state changes from OS1 to OS2 (extreme fire risk) were
recorded.This is consistent with the number of Red Flag Warnings issued by the National Weather Service in 2025
for the forecast zone that Redding is in.
. i s rvati s xC i Sta lis
thresholds (>20 mph)
Sustained winds in excess of 20 mph are an identified risk driver (Risk Driver 1) in the WMP and tracked by REU.
According to the WMP, 2025 had an elevated occurrence of sustained winds exceeding this threshold. 2025
experienced the most outages based on R EU's outage data from 2020 to present. However, only two outages were
directly attributed to wind as a primary or supplemental cause.
. Tr c v t �rics
Section 10 provides records for six tracked metrics. All six metrics: REU-attributed wildfire ignitions, Equipment
related wires-down events, PSPS events activated, P1 defects closed within 72 hours,Vegetation-caused outages
(total), and P1 conditions at time of inspection are event/outcome based metrics. WMP metric data generally
indicate success in REU's implementation of its wildfire mitigation strategies. Negative outcome events (REU-
attributed wildfire ignitions, P1 conditions at time of inspection, and Equipment-related wires-down events) are
trending downward. Atthe same time, positive outcome events (P1 defects closed within 72 hours) are at 100%.
Vegetation-caused outages increased from 2024. The WMP stresses that this is not due to a failure to perform an
inspection or identify line clearance. As noted above, outages were significantly higher in 2025 than in the four
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years preceding it, and this increase may reflect a higher number of outages overall rather than an indication that
vegetation-related outages are trending upward.
. t ti n I S Cti n nt
REU met ali of its vegetation management activity targets in 2025, performing vegetation management around
transmission assets by0ctoberand around all of its distribution assets by December.REU completed treetrimming
on all trees identified for line clearance and around the base of all poles identified for pole base clearance. REU
completed more than 500 acres of fuel reduction work
. sset Ins cti n rrectiv c�i s
REU completed the majority of its asset inspections in 2025, performing patrol inspections at 99% of targeted
locations, detailed inspections at 100%, and intrusive inspections at 99%. REU completed all P1 and P2 corrective
actions within the required time limit.
. yste r eni / r s
In 2025, REU installed system-hardening features (pole-top retrofits, arc-suppression devices, and wildlife-
protection covers)at 94 of 127 targeted locations (74%). 370 new pole protective wraps were installed, exceeding
the target goal of 250.
REU has consistently met vegetation management goals since 2021 and completed the majority of asset
inspections since 2020. REU is setto complete its pole-wrapping goal (1,251 poles)and its system-hardening goal
(127 targeted locations) in 2026.
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I
The Redding Electric Utility service territory and the surrounding area have an elevated wildfire risk due to a
combination of terrain and vegetation features conducive to large growth, a protracted summer-fall season with
extreme fire weather events,and the presenceofoverhead electric facilities in or near high fire hazard areas. Within
these high fire hazard areas,there are significant portions of REU's overhead line circuits and facilities that, due to
their proximity to continuous unmanaged vegetation, could ignite a wildfire if an ignition event (vegetation
contacting an energized line or equipmentfailure) occurred. While not responsible for any recent large catastrophic
wildfire, REU's service territory and the area around Redding has experienced several recent destructive wildfires,
including the 2018 Carr Fire.
Redding Electric Utilities' 2026-2029 Wildfire Mitigation Plan is a comprehensive document that details each
required PUC 8387 (2) element. The review assessed whether the plan satisfies applicable PUC requirements,
reflects an appropriate understanding of wildfire risk and risk drivers in REU's service territory, and identifies
mitigation strategies that are responsive to those risks. Redding Electric Utility's 2026-2029 WMP reflects an
understanding of the wildfire risks present in its service territory through its partnerships with the Redding Fire
Department, its use of weather and fire-danger monitoring for real-time analysis of weather and fire-danger
conditions duringfireseason and wildfire outlook products,and an alert-level framework based on wildfire potential.
REU's operating state is based on the products of this weather and fire-danger analysis, and the WMP describes a
utility that modifies its system settings to minimize the risk of ignition from its equipment. REU's PSPS program,
though considered a last resort option, is integrated into this situational awareness and operating state framework.
As a result, REU's PSPS program is not an add-on mitigation strategy; rather, its use is analyzed as fire danger
increases and REU shifts to a higher operating state. REU wildfire mitigation strategies are responsiveto the specific
risks in REU's serviceterritory. As an example of this, REU has a robustvegetation inspection and management
program with a priority methodology based on the potential for contact with its wires or overhead equipment.This
vegetation management program targets the significance of vegetation contact with wires in fires involving REU
equipment (20% of all reported incidents)targets. The WMP also demonstrates REU's investment in long-term
wildfire risk-reduction strategies, including an equipment-hardening program designed to reduce the likelihood that
REU equipment in high-fire-hazard areas will ignite and a pole-wrap program intended to improve pole-and-line
survivability during a wildfire.
The Wildfire Safety Advisory Board (WSAB) released guidance to POUs in their December 2025 publications
regarding the contents of each POU's WMP. REU received specific guidance from the WSAB to include a more
detailed description of their PSPS processes. The contents of REU's 2026-2029 WMP address this request,
describing REU's incorporation of the use of PSPS in their operating state system,the triggers for evaluating PSPS
use, and a PSPS sequence.
In summary, REU's 2026-2029 Wildfire Mitigation Plan addresses each required element of Public Utilities Code
Section 8387 and demonstrates a proactive and risk-informed approach to wildfire prevention, operational
readiness, and system resiliency. The plan reflects REU's commitment to continuous improvement through
enhanced situational awareness, targeted vegetation management, system hardening investments, and clearly
defined operational protocols intended to reducethe likelihood and consequences of utility-related ignitions. By
incorporating WSAB guidance, strengthening its PSPS framework, and aligning mitigation strategies with the
_ 18140.02 18
JULY 2026
�'�C���IOfl�, ��EC�C..k�l� "�.C�ILI.�Y 2€�26-202� V1��(�D�I�i� B�fll.f[GATIC�II� R�LA�RI I�1�EPF_RfC��I�V.� �Vr`lL�A�C..C�R`S R�POI�T
specific wildfire risks presentwithin its service territory, REU has developed a WMP that supports both regulatory
compliance and the ongoing protection of public safety, utility infrastructure, and the communities it serves.
18140.02 19
JULY 2026
�'�C���IOfl�, ��EC�C..k�l� "�.C�ILI.�Y 2€�26-202� V1��(�D�I�i� B�fll.f[GATIC�II� R�LA�RI I�1�EPF_RfC��I�V.� �Vr`lL�A�C..C�R`S R�POI�T
California Department of Forestry and Fire Protection. (n.d.). [Interactive map viewer]. ArcGIS Online.
https://calfire-
forestry.maps.arcgis.com/apps/mapviewer/index.html?layers=c3c 10388e3b24cec8a954ba10458039d
California Department of Forestry and Fire Protection. (n.d.). Fawn Fire.
https://www.fire.ca.gov/incidents/2021/9/22/fawn-fire/Author(s) or entity(ies).
California Department of Forestry and Fire Protection. (n.d.). Carr Fire.
https://www.fire.ca.gov/incidents/2018/7/23/carr-fire/
California Office of Energy Infrastructure Safety. (2026, March 4). Adopted revised 2026-2029 POU and co-op
WMP submission schedule. htt�s: energysafety.ca.geov/w�-content/uploads[2026�01Lado�ated-revised-
2026-2029-pou-and-co-o -p wmp-submission-schedule-2Q26-03-04.pdf
California Office of Energy Infrastructure Safety. (2025, November 21). Advisory opinion to publicly owned utilities.
https://energysafety.ca.gov/wp-content/u ploads/2025/12/advisory-op in ion-to-pous-2025-11-21-1.pdf
California Department of Forestry and Fire Protection (CAL FIRE), Fire and Resource Assessment Program (FRAP).
2022. Vegetation-by-Wildlife-Habitat Relations [GIS data layer]. https://www.fire.ca.gov/what-we-do/fire-
resource-assessment-program/gis-mapping-and-data-analytics.
City of Redding. 2024a. General Plan 2045.
https://files.cityofredding.gov/Document%20Center/Departments/Development%20Services/Planning/
General%20PIan/General%20PIan°/o202045%20-%20Combined%20Elements_05-02-24.pdf.
City of Redding. (2024, October 8). Community wildfire protection plan. Deer Creek Resources. City of Redding.
2024b.Appendix A- Revised DEIR with General Plan Policy and Figure Changes (for City of Redding 2045
General Plan).
https://www.cityofredding.gov/government/departments/development_services/planning/general_plan.
ph p#docaccess-07fb7dc47811427e0e17fe4962e438d 67caecb8626319cd 1218b5bd95690f03c
National Wildfire Coordinating Group. (n.d.). Normal fire season (period of time).
https://www.nwcg.gov/node/1800962
lowa State University Mesonet. (n.d.). Number of watch/warning/advisories issued per year per month +top 10
daily [Data visualization].
https://meson et.agron.iastate.ed u/p lotting/auto/?_wait=n o&q=171&opt=wfo&station=STO&state=CA&
_ugc_state=CA&ugc=CAC089&fema=9&c=single&phenomena=FW&sign ificance=W&cmap=inferno&_r=t
&d p i=100&_fmt=p n g
U.S. Geological Survey (USGS). 2021. Redding quadrangle, California (7.5-minute series topographic map). U.S.
Geological Survey. https://ngmdb.usgs.gov/topoview/
.18140.02 20
JULY 2026
�'�C���IOfl�, ��EC�C..k�l� "�.C�ILI.�Y 2€�26-202� V1��(�D�I�i� B�fll.f[GATIC�II� R�LA�RI I�1�EPF_RfC��I�V.� �Vr`lL�A�C..C�R`S R�POI�T
U.S. Geological Survey(USGS). 2023. Enterprise quadrangle, California(7.5-minute series topographic map). U.S.
Geological Survey. https://ngmdb.usgs.gov/topoview/
U.S. Geological Survey (USGS). 2023. Shasta Dam quadrangle, California (7.5-minute series topographic map).
U.S. Geological Survey. https://ngmdb.usgs.gov/topoview/
U.S. Geological Survey (USGS). 2023. City of Shasta Lake quadrangle, California (7.5-minute series topographic
map). U.S. Geological Survey. https://ngmdb.usgs.gov/topoview/
18140.02 21.
JULY 2026
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Tableof Contents.......................................................................................................................................i
...
Table o Figures....................................................................................................................................... oe�
...
Tabte o Tables ........................................................................................................................................ iu
Acronymsand Abbreviations ................................................................................................................... iv
ESExecutive Summary ...............................................................................................................................7
�S-A: About This Plan ..............................................................................................................................7
ES-B: This Year's Report..........................................................................................................................7
1 Introductian ...............................................................................................................................................9
1.1 REU Service Territory at a Glance.....................................................................................................9
1.2 Why Wildfire Risk Matters in Redding..............................................................................................10
1.3 Statutory and Regulatory Framework..............................................................................................11
1.4 How This Plan Is Organized ............................................................................................................13
2 Portfolio Architecture...............................................................................................................................14
2.1 Portfolio C?verview............................................................................................................................14
2.2 Portfolio Design Principles................................................................................................................16
2.3 Program Interdependencies and Feedback......................................................................................16
2.4 Governance and Ownership.............................................................................................................17
3 Roles and Responsibilities......................................................................................................................19
3.1 REU Internal Governance................................................................................................................19
3.2 City of Redding Coordination...........................................................................................................22
3.3 Regional and State Goordination.....................................................................................................23
4 Wildfire Risk and Risk Driuers.................................................................................................................26
4.1 The Four-Driver Risk Framework.....................................................................................................26
4.2 Geographic Risk Profile ...................................................................................................................34
4.3 Climate and Weather Risk Drivers....................................................................................................36
4.4 Risk Driver to Program Traceability.................................................................................................38
5 Operational Risk Reduction Programs....................................................................................................39
5.1 Vegetation Management Program....................................................................................................39
5.2 Asset Inspectian Program.................................................................................................................46
5.3 T&D System Operational Practices ..................................................................................................50
6 Capital Risk Reduction Programs...........................................................................................................54
6.1 System Hardening Program..............................................................................................................54
6.2 Fire Mitigatian System Upgrades Program.......................................................................................55
6.3 Fire-Retardant Pole Wrap Program ..................................................................................................56
7 Situational Awareness and Technology..................................................................................................57
7.1 Operational Decision Support Program ............................................................................................57
7.2 Situational Awareness Technolagy...................................................................................................59
i � Page
il fire iti tian 1 n
8 Gustomer and Community Resiliency.....................................................................................................63
8.1 Wildfire Improved Response Program..............................................................................................63
8.2 Alert Level and Emergency Response Framework ..........................................................................63
8.3 Post-Fire Restoration and Recovery.................................................................................................64
8.4 Gustomer Notification and Critical Customer Support......................................................................65
8.5 Gommunity Outreach and Preparedness..........................................................................................66
9 Safety, Compliance, and Governance....................................................................................................67
9.1 Regulatory Gompliance Obligations..................................................................................................67
9.2 Role of R�U's Compliance Program.................................................................................................68
9.3 Safety Program Integration...............................................................................................................69
10. 2025 Annual Performance Report ........................................................................................................70
10.1 Portfolio Summary...........................................................................................................................70
10.2 Wildfire Risk Framework.................................................................................................................73
10.3 Operational Decision Support.........................................................................................................74
10.4 Vegetation Management Program..................................................................................................74
10.5 Asset Inspection Program...............................................................................................................75
10.6 T&I� System Operational Practices ................................................................................................76
10.7 System Hardening Program............................................................................................................76
10.8 Fire Mitigation System Upgrades Program.....................................................................................77
10.9 Fire-Retardant Pole Wrap Program ................................................................................................77
10.10 Customer Service, Gommunications, and Emergency Response................................................78
11 Coming Year Work Plan and Goals......................................................................................................79
11.1 2026 Goals......................................................................................................................................79
11.2 2027 Goals......................................................................................................................................82
11.3 2028 Planning Horizon....................................................................................................................84
12 Multi-Year Roadmap and Program Maturity.........................................................................................86
12.1 Portfalio Trajectory..........................................................................................................................86
12.2 Program Maturity Trajectory ...........................................................................................................86
12.3 Lagging Indicator Trajectary ...........................................................................................................88
12.4 Governance and Campliance Maturity............................................................................................89
13. Plan Adoption and Public Accountability...............................................................................................90
13.1 City Gouncil Adoption......................................................................................................................90
13.2 Public Posting and Accessibility......................................................................................................90
13.3 Independent Evaluator Report........................................................................................................90
13.4 WSAB Filing....................................................................................................................................91
13.5 Revision Histary..............................................................................................................................91
Appendix A-ODS Nightly Report �xample................................................................................................ A
..................................................................................................................................................................... B
Appendix B-Operational Dashboard State Table Dashboard................................................................... A
ii � Page
il fire iti tian 1 n
1'able t,�f �IgLlr��
Figure 2-1: REU Wildfire Mitigation Partfolio ..............................................................................................17
Figure 3-1: R�U Wildfire Mitigation Governance Urganizational Ghart......................................................21
Figure 3-2: CAL FIRE/ Redding Fire Department Mutual Threat Zone .....................................................25
Figure 4-1: Outage Frequency as a Function of Wind Speed ....................................................................27
Figure 4-2: CAI� FIRE Fire Hazard Severity Zone Map with Overhead Circuit Routing Overlay................35
Figure 5-1: Vegetation Field Inspection Form.............................................................................................41
Figure 5-2: Vegetation Management Dashboard........................................................................................42
Figure 5-3: Before and After Image of Cleared 115 kV Right of Way.........................................................44
Figure 5-4: Redding Police Officer Performing Traffic Gontrol for Graund Clearance Goats.....................45
Figure 5-5: Example Asset Inspection Field Data Collection Form ............................................................49
T�bl� c�f T�bl�e�
Table 1-1: REU Service Territory at a Glance ..............................................................................................9
Table 1-2: PUC § 8387 Statutory Crosswalk..............................................................................................11
Table 1-3: WSAB Advisory Opinion Response...........................................................................................12
Tabte2-1: Porkfolio Overview......................................................................................................................14
Table 2-2: Portfalio Ownership Structure....................................................................................................18
Table 3-1: Governance Roles.....................................................................................................................19
Table 3-2: Governance Galendar................................................................................................................22
Tabte 3-3: City Coordination Partners.........................................................................................................22
Table 41: Four-�river Risk Framevuork Overview......................................................................................26
Table 4-2a: Operating State Definitions and Triggers...................................................................31
Table 4-2b: QS2/0S3 FPI'/Wind Threshold Criteria.....................................................................31
Table 4-3: Consequence Tier Definitions....................................................................................................32
Table 4-5: Operational Response by Operating State and Consequence Tier..........................................33
Table 4-6: Risk Driver to Program Traceability...........................................................................................38
Tabte 5-1: Vegetation Clearance Standards...............................................................................................42
Table 5.2-1. P-Level Classification and Required Response Windows......................................................47
Table 5.3-1. Standing Switch Log - I�ifecycle..............................................................................................51
Table5.3-2. PSPS Sequence.....................................................................................................................52
Tabte 6-1. Pole-Top Hardening Components.............................................................................................57
Table 7-1. ODS Decision-Support Products...............................................................................................57
Table 7-2. Human-in-the-Loop Safeguards ................................................................................................59
Table 7-3. Situational Awareness Technology- Capabilities and Operational Use ...................................60
Tabte 8-1. Alert Level Framework: Wildfire Events.....................................................................................63
Table 8-2. Restoration Priority Framework.................................................................................................64
iii � Page
il fire iti tian 1 n
Table 8-3. PSPS Customer Notification Timeline.......................................................................................65
Table 9-1. WMP Regulatory Obligations.....................................................................................................67
Table 9-2. What the Compliance Program Tracks and Enforces ...............................................................68
Table 10-0. 2025 Fire Weather Severity Context........................................................................................7Q
Table 10-1. Portfolio-Level Outcome Indicators (2021-2025}....................................................................71
Tabte 10-2. 2025 Program Performance Summary....................................................................................71
Table 11-1. 2026 Program Goals................................................................................................................79
Table 11-2. 2027 Program Goals................................................................................................................82
Table 12-1. Program Maturity Trajectory: 2026 Thraugh 2Q28...................................................................87
AE : Affier-Event Report
ANSI: American National Standards Institute
AVL: Automatic Vehicle Location
I: Burning Index
CAL FIRE: Califarnia Department of Forestry and Fire Protection
Cal OES: California Governor's Office of Emergency Services
CalTrans: California Department of Transporfiation
CIP: Capital Improvement Program
CMUA: California Municipal Utilities Assaciation
CPAW: California Public-Pawer Agencies Wildfiire Callaborafiive
CPUC: California Public Utilities Cammission
CUEA: California Utility Emergency Association
DOC: Department Operations Center
EOC: Emergency Operatians Center
EOPS: Emergency Operations
EPSS: Enhanced Powerline Safety Settings
ERG: Energy Release Gamponent
ESRI: Environmental Systems Research Institute (GIS platform)
FEMA: Federal Emergency Management Agency
FEMS: Fire Enviranment Mapping System
FHSZ: Fire Hazard Severity Zone
FLIR: Forward-Loaking Infrared
FP: Facility Protection (vegetation priority classification)
iv � Page
il fire iti tian 1 n
FPI': Fire Potential Index (REU custom variant)
GIS: Geographic Infarmation System
GO: General Order (CPUC)
GPS: Global Positioning System
HFTD: High Fire-Threat District
IC: Incident Commander
ICS: Incident Command System
IE: Independent Evaluatar
ISA: International Saciety of Arboriculfiure
kV: Kilovolt
NFDRS: Nafiional Fire Danger Rating System
NWS: National Weather Service
ODS: Operational Decision Suppart
OEIS: Office af Energy Infrastructure Safety
OMS: Outage anagement System
(�S: Operating State
P1—P5: Priority Levels 1 through 5 (defect classification)
PRC: Public Resources Code
PSPS: Public Safety Power Shutaff
PUC: Public Utilities Code
QA/QC: Quality Assurance / Quality Control
RAWS: Remote Autamatic Weather Station
REU: Redding Electric Utility
F2FD: Redding Fire Deparfiment
ROC: Risk Oversight Committee
ROW: Right-of-Way
RPD: Redding Palice Deparfiment
SCADA: Supervisory Control and Data Acquisition
SEMS: Standardized Emergency Management System
SHASCOM: Shasta Area Safety Cammunications Agency
SME: Subject Matter Expert
SOP: Standard Operating Procedure
TRAQ: Tree Risk Assessment Qualification
UAV: Unmanned Aerial Vehicle
v � Page
il fire iti tian 1 n
USDA: United States Department of Agriculture
VHFTD: Very igh Fire-Threat District
VM: Vegetation Management
WCAG: Web Content Accessibility Guidelines
WMP: Wildfiire Mitigation Plan
WSAB: Wildfire Safety Advisary Board
WUi: Wildland-Urban Interface
vi � Page
REU 2026 Wildfire Mitigation Plan
.
Redding Electric Utility is a publicly owned municipal electric utility serving appraximately
46,750 customers across a compaet 61-square-mile service territary in the northern
Sacramento Valley. REU awns and operates 115 kV transmission and 12 kV distribution
systems totaling appraximately 626.3 miles of overhead conductor and appraximately
1,051.21 miles of underground distribution. Over 33°/a of the service territory lies within
CPUC Tier 2 High Fire-Threat Districts and 12.5°!o within Tier 3, with 38°/o classified as
Wildland-Urban Interface. The 201$ Carr Fire, which killed eight peaple, destroyed aver
1,000 homes and over 1,6Q0 structures at the edge of Redding's urban core, defines the
cammunity's baseline understanding of wildfire consequence.
This plan is organized as a two-part document. Part I (1-9) describes what REU's wildfire
mitigation system is, how it works, and why. Part II (10-13) reparts how REU performed
in the prior year and describes the initiatives for the years ahead. REU's mitigation effart
is structured as an integrated portfalio afi eleven programs arganized into five layers:
governance, risk intelligence, operational risk reduction, capital risk reduction, and
customer and cammunity resilience. A feedback loop returns findings from every layer
back into program improvement.
The plan is filed pursuant to PUC � 8387 and submitted to the WSAB as FZEU's biennial
comprehensive revision. Every WSAB advisory recommendation from 2021 through 2025
is addressed in Table 1-3, and every PUC � 8387 subsection is mapped in Table 1-2.
. '
In 2025, REU completed its most comprehensive wildfire mitigatian execution year to
date. Vegetation inspections achieved 100% coverage an bath transmission and
distribution systems. Arborist Crews trimmed 8,602 identified trees, completed 100% of
pale base clearance by May, and treated 512 acres through targeted fuels reduction. The
most severe (P1) vegetation conditions declined from 286 to 163, a 43°!o reduction. The
Asset Inspection Pragram identified 1,588 defects and carrected all 42 of the most critical
defects (P1) within 72 hours.
In 2025, REU recorded one verified ufiility-attributed ignitian, the lowesfi annual tatal in the
five-year reporting period and a significant reduction from nine in 2021. Equipment-related
wires-dawn events declined to four, down fram eight in each af the two priar years. In its
first year of formal PSPS pragram operation, REU recorded zero PSPS events. These
autcames are cansistent with the cumulative effiects of REU's sustained investment in
vegetation management, equipment inspection, and operational practices across the
wildfire risk system. REU's primary wildfire program outcome metrics are shown in Table
ES-1. Full metric definitions and program-level performance data are provided in Section
1 Q.
7 � Page
REU 2026 Wildfire Mitigation Plan
Ta le -1� utc e etrics: Five- ear Tren ( 1— )
� 1 1 � � � �
Reportable Ignition Events 9 4 4 4 1
Equipment-related wires-down events 5 7 8 8 4
EOPS Alert Level 1 due ta Fire Danger 11 5 3 3 4
EOPS Alert Level 2 due ta Fire Danger 2 1 0 0 0
PSPS events N/A N/A N/A N/A 0
For the 2026-2027 cycle, REU will continue to evolve implementation across all
mitigation programs. Key priorities include refining the porfifolio gavernance program and
strengthening individual program charters with program-level KPIs; advancing the Wildfire
Risk Framework through more sophisticated analytical methads that imprave spatial
resolution and risk classification of assets across the system; updating the Operational
Decisian Support program ta reflect the improved risk framework autputs; revising the
more general Emergency Operations program to ensure wildfire risk is comprehensively
addressed; and impraving autage tracking and roat cause analysis capabilities. Because
the Wildfire Risk Framework serves as the analytical foundation for the entire mitigation
portfolio, its advancement will drive correspanding improvements acrass vegetafiian
management, inspectian prioritization, system hardening, and operational practices.
8 � Page
REU 2026 Wildfire Mitigation Plan
.
Redding faces two conditians that create serious wildfire risk: a service territory with
significant fire exposure and a climate that is becoming hotter and drier. REU must
aperate an electric system that remains safe and reliable under these conditians.
Table 1-1 summarizes the key attributes of REU's service territary, electric system, and
wildfire risk profile. These numbers establish the factual baseline referenced throughout
bath parts of this plan.
Ta le 1-1: e ice Territory at a la ce
. ,
Service Territary ; 61 square miles
..... . ......... . .. . . . ....... . ....___. _._ ...__ ___ ______... .....,...._._ _..._ ..__._._._._...... ......__ _........___._._..
Customers Served 46,758 accounts
_..___ .._ _._ ____ .__�_....._....__. _._ _.._..___....� . ._____ __ _ .. ______.___._ _._....
Population Served i 92,465
Overhead Distributian (inside territory) 527.1 miles
_ _ _ _ __. _._ _ ..__ _ _.__ . ...__ _. .....__ _._........._.�
Overhead Distnbutian (outside terntary) 27.6 miles
_ ._.__._._ _ _ __. ._____ ______ _ _______ _ _____ .
____..._�_ ..__ ..____.. ___._. _... .__ __. .__ ._._________.
Overhead Transmission (inside territory) ' 50.9 miles
Overhead Transmission (autside territory) 20.7 miles
Underground Distribution 1,051.2 miles
System Underground Percentage Approximate�y 63%
% Territory in CPUC Tier 2 HFTD 33.5°!0
°/a Territory in CPUC Tier 3 HFTD 12.5%
% OH Distribution Lines in Tier 2 24.55%
% 4H Distribution Lines in Tier 3 7.25%
% OH Transmission Lines in Tier 2 44.8%
% OH Transmission Lines in Tier 3 1 Q.95%
Wildland-Urban Interface (Infierface) 38%
__ ._.__ _ .. ___
Wildland Urban Interface (Intermix) 24%
_ ..__. _._ _ __ _.__ __ _... ____ . ____...................... ..._____
Fire Statians Within City ; 8
- --- - --- -� --- --- ----------
9 � Page
REU 2026 Wildfire Mitigation Plan
Department Operations Cenfier REU eadquarters
3611 Avtech Parkway
Redding, CA 960Q2
As a department ofi the City af Redding, REU's wildfire mitigation decisians are
recommended by staff, reviewed and approved in open City Council sessions, and the
program is funded through REU rates.
Redding°s geographic position creates persistent, serious wildfire exposure. The city's
boundaries interface directly with oak woadland, chaparral, and mixed conifer terrain,
which are among the most fire-prone landscapes in Califarnia. Thirty-eight percent of the
service territory falls within the Wildland-Urban Interface, with an additianal 24% classified
as WUI intermix. Over 33°!0 of the territory lies within CPUC Tier 2 High Fire-Threat
District and 12.5% within Tier 3.
The 2018 Carr Fire, ignited by sparks from a vehicle°s blown tire on the highway west of
Redding, defines the community's baseline understanding of wildfire consequences.
Recard-low fuel moisture, temperatures exceeding 110 degrees, and dry, unpredictable
winds allowed the fire to spread rapidly from steep terrain into Redding's western
suburbs. At its peak intensity, the fire generated a fire vortex over 200 feet wide with
winds exceeding 140 miles per hour. The fire resulted in eight fatalities, and over 1,600
structures were destroyed. For the City of Redding, wildfire is a lived experience that
shapes how this community thinks about safety, preparedness, and the obligatians of its
public institutions.
For REU, that experience translates into a specific operational responsibility because
electric infrastructure can ignite wildfires when it fails. REU's overhead distribution system
includes over 24 miles of circuit in Tier 3 HFTD and over 92 miles in Tier 2 on the 12 kV
system alone. Every program in this plan exists to reduce the probability that REU's
infrastructure causes an ignition and to limit consequences when conditians are at their
mast severe.
li ate an e
The wildfire risk environment continues to change. Climate change is measurably
intensifying wildfire conditions across Redding's service territory, resulting in extended fire
seasans, increased frequency and severity af extreme heat events, accelerated fuel
drying, and greater year-to-year climate variability that drives more dangerous fire
weather. These trends directly affect REU's exposure: a langer fire season means more
days on which an equipment failure can produce a catastrophic ignition, and drier fuels
mean faster spread when a fire starts.
Climate projections inform REU's annual wildfire-risk assumptions. Section 4.3 provides
the detailed analysis and explains how projected changes affect REU's pragrams.
10 � Page
REU 2026 Wildfire Mitigation Plan
REU prepares this plan pursuant to California Public Utilities Code Section 8387. Table 1-
2 maps every statutory requiremenfi to this plan. Table 1-3 respands fia every WSAB
advisory recommendation from 2021 through 2025.
Ta le 1-2: 3 7 tat tory r ss al
. : : - . , . . . .
(b)(2)(A) Person responsible for executing 2.4; 3.1; 3.1.1 Roles and Responsibilities
the plan
(b)(2}(B) Objectives of the wildfire 1.4; 2.1; 2.3 Plan Objectives and Portfolio
mitigation plan Architecture
(b)(2)(C) Identification and prioritizatian af 4.1-4.4; 5.1-5.3; Risk Assessment and Mitigation
risks; preventive strategies 6.1-6.3; 7.1; 8.2 Programs
(b)(2)(D) Evaluatian of plan performance, 10.1-10.1Q Performance Evaluation and
including metrics Metrics
..... .......... _..__ _,._. . ..._ ._ __ .......
(b)(2)(E) Description of how metrics inform 2.3; 10.4-10.10; Continuous Improvement and
plan improvements 12.4 Lessons �earned
(b)(2)(F) Protoeols for de-energization 4.1.3; A.1.5; 5.3; PSPS and Operational Gontrols
8.2
(b)(2)(G) Procedures for customer 8.4; 8.5 Custamer Notification and
notification before, during, and Outreach
after de-energization
(b)(2)(H) Vegetation management activities 5.1 Vegetation Management
and protocals Program
(b)(2}(I) Inspections and maintenance of 5.2 Asset Inspection Pragram
electrical infrastructure
(b)(2)(J) Description of fire risk and risk 4.1-4.3 Wildfire Risk and Risk Analysis
analysis
(b)(2)(K) Geographic areas at elevated risk 1.1-1.2; 3.3.5; Geographic Risk Profile
4.2
(b)(2)(L} Methodolagy for risk assessment 4.1.1-4.1.5; 4.2; Risk Assessment Methodology
and risk drivers 4.3; 4.4
(b)(2)(M) Procedures for restoration of 8.3 Past-Fire Restoration and
service after de-energization or Recovery
wildfire-related outages
(b)(2)(N) Monitoring and auditing of plan 3.1.4; 9.1; 9.2; Compliance, Monitaring, and
implementation 9.4; 10; 12.4; Independent Evaluation
13.3
(c} Independent evaluation of the 9.4; 13.3 Independent Evaluation
plan
11 � Page
REU 2026 Wildfire Mitigation Plan
Ta le 1-3: vis ini n es onse
• : . . • . . - .
. . . .
1 Sumrnary table of 2024-25 11.1-11.3 Table 11-1 and the 2Q26-2028 planning
projects with targets and sections provide program goals, measurable
years outcomes, completion targets, and year-
based planned work far u�comin�c initiatives.
--- - - ----_
2 Digital accessibility 2024-25 13.2 The plan is prepared with machine-readable
(WCAG, alt text, text, alt text on figures, and a hyperlinked
hyperlinked TOC) table of contents, and is intended for public
accessibility postinga_._ . —..
— _
3 Track changes and 2022 25 13.5 Section 13.5 provides the formal revision
revision history history table for the plan
_ .. .__.._ _...._ _ ___ ....,.__.
4 Context-setting 2021-23 ES-A; 1.1; The Executive Summary and Introductian
information at beginning 1.2 establish service-territory context, system
of plan facts, wildfire exposure, and why wildfire risk
matters in Redding.
_.._ _ _.,_ . __ __ ..___ _ _ ___...._ _ _.� _.__.
5 Expand mapping beyond 2021, 4.2 ; Section 4.2 explains that REU uses CA�
HFTD using FHSZ and 2025 ; FIRE Fire Hazard Severity Zone mapping in
local knowledge i addition to CPUC HFTD designations and
; incorporates local knowledge firom REU and
Reddin� Fire Department_____ _
------- --- ___.
6 Inventory equipment, 2021, 10.9 Section 10.9 documents identified poles,
including treatment of 2025 eligible poles, and exempt poles within the
exempt and non-exempt Fire-Retardant Pole Wrap Program,
assets includin� reclassification of exempt poles. _
—_.__.____ ___.. .__.____ _... .. __,. _._.,___ _ __.__ _..__ ._ _.__
7 Incorporate climate 2021-23 4.3.1 � Section 4.3.1 includes climate change
change data ; discussion covering temperature, extreme
heat, hydroclimate volatility, snowpack,
wildfire area, and wind patterns, and
explains how REU reviews climate
pra�ectians annually_
8 Justify enhanced 2021-25 5.1; 5.2 Sections 5.1 and 5.2 describe REU-specific
practices that exceed vegetatian clearance targets that exceed
minimum standards minimum GO 95 standards where feasible
and explain risk-based prioritization and
---
enhanced treatment in higher-risk areas.
9 Specific targets and 2024-25 6.1-6.3; Capital program sections describe the
timelines for hardening 11.1-11.3 hardening programs, and Section 11
projects provides measurable outcomes and
com�leteon targets for upcoming work.
_ —_._____.—.._ _ ._ .
10 Define PSPS protocols, 2021-25 4.1.3; ; These sections define the FPI'/wind
including data sources, 4.1.5; 5.3; thresholds, operating states, PSPS decision
conditions, and 8.2 logic, operational execution steps, and
responsible parties IncAdent Commander authority
__ _. _. ______._ .._.. _ _____..__ ..___
11 Pre-stage personnel 2023, 5.3; 8.2 ; These sections describe patrol posture,
protocols 2025 � escalation of operational controls, and
I emergency-response framework elements
used when elevated conditions require
readiness actions.
12 � Page
REU 2026 Wildfire Mitigation Plan
_
12 Address invasive grasses 2022-23 5.1 Section 5.1 includes invasive grass
management as part of targeted fuels
reduction and caordinated landscape-level
miti�ation.
-- - ____— ---
13 Detail QA/QC programs, 2024-25 5.1 Section 5.1 includes a Quality Assurance
including contractor and Corrective Action subsection describing
oversight QA/QC controls, audits, reinspection, data
checks, retraini�, and corrective action.
--------- -- __ - ----- -- ____
14 PerFormance metrics 2021-25 10; ES-B Section 10 and the Executive Summary
showing both completed report both execution mefirics and outcome
work and autcomes metrics, including inspection coverage, trees
trimrned, acres treated, defects identified,
and critical defects corrected.
— ..______._ _ _ _ . _._____ . ______ ______ ___.______.._ ..__ _ —..
15 Use CMUA performance 2025 10 Section 10 provides standardized annual
metric structure performance reporting by program and
portfolio outeomes.
__ _..___ _.._ ___..______ _______..._ __ ._
16 Historical data showing 2022-25 ES-B; 10 The plan includes five-year outcome trend
progress and informing tables in the �xecutive Summary and
changes historical performance/results discussion in
Section 10.
__ ---___ __
17 Substantive independent 2021-25 9.4; 13.3 Section 9.4 describes the independent
evaluation addressing evaluation and Section 13.3 states that the
strategy and campliance evaluator's findings and REU's response are
pubtic� posted.
- -------
18 Track independent 2025 9.4; 13.3 Section 9.4 describes REU's engagement of
evaluator the independent evaluator, and Section 13.3
recommendations from provides for public posting of findings and
prsor evaluateons__.__ _,.._R�U s response _
_
19 Describe situatianal 2025 7.1; 7.2; These sections describe the Qperational
awareness and data 3.2; 3.3 ; Decision Support program, situational
sharing awareness technology, and
coordinationOdata-sharing relationships with
Csty and regional partners.
1 e4 H�w °Thi� P'lan 1� C�rg�niz�d
The 2026 WMP is organized as a twa-part document serving two distinct purposes.
Part I (1-9) is the static program document. It describes REU's wildfire mitigation portfolio
and is updated only when programs materially change. Part I covers REU°s risk
framework, the five-layer portfolio of eleven programs, roles and respansibilities, and the
governance structure that binds the system together.
Part II (10-13) is the annual performance report. It documents REU°s prior year
perfiormance and the coming year work plan, covering 2025 metric actuals, year-aver-
year trend analysis, lessons learned, the 2026-2028 planned work program, and the
multi-year capital roadmap.
13 � Page
REU 2026 Wildfire Mitigation Plan
.
REU organizes its wildfire mitigatian effart as an integrated portfalia of coordinated
programs. Each program has a distinct role, defined ownership, and explicit cannections
fio the programs that precede and follow it. The portfolio is designed ta convert wildfire risk
understanding into action, evaluate whether those actions are working, and use the
results to improve future decisions. This structure supports accountability, integration
across functions, and continuous improvement across the full wildfire mitigation system.
The portfolio is arganized in five functianal layers: gavernance and cross-cutting
oversight, risk intelligence, operational risk reduction, capital risk reductian, and customer
and community resiliency. Risk intelligence informs operational and capital decisions.
Operational findings and annual perFormance results feed back into the governance
structure and are used to adjust priarities, standards, and future work plans. This
structure allows the portfolio to function as a managed system with coordinated programs.
Table 2-1 summarizes the partfolio layers, their roles, and haw each connects to the
broader wildfire mitigation system.
Table 2-1: Portfolio Overview
- . . - .
- . . .
. .
Establishes the � �Qverns all
accountabilify i �ayers; supports
• WMP Portfolio structure, governance � integration,
Governance Gavernance Gadence, regulatory
and Cross- documentation
1 • Safety Program alignment,
Cutting standards, regulatory
Oversight • Compliance tracking, and cross- corrective action
Program cutting controls that tracking, and
apply acrass the full continuous
portfolio. improvement.
14 � Page
REU 2026 Wildfire Mitigation Plan
Feeds risk
Produces the analytical outputs into
foundation for the operatianal,
• Wildfire Risk Portfolio. The Wildfire capital, and
Risk Framewark Risk Framewark custamer
2 Intelli ence . defines annual wildfire programs;
g Operational risk, and ODS applies receives
Decision Support that logic in daily and performance
farecasted operating feedback through
canditions. governance and
annual review.
Maintains the system
in a fire-safe operating Uses risk
• Vegetation condition on a intelligence
Management continuous basis outputs to
Operational . Asset Inspection through vegetation prioritize work and
3 Risk Program clearance, equipment escalafiian;
Reduction . T&D System inspectian and perFormance
Operational correction, and findings feed back
Practices operational controls inta governance
during elevated fire and planning.
weather.
Priarities are
driven by the
Wildfire Risk
• System Reduces long-term Framework and
Nardening wildfire risk through annual
Capital Risk • Fire Mitigation targeted infrastructure perFormance
4 Reduction SYstem investment, system fwndings; capital
Upgrades upgrades, and asset investment
• Fire-Retardant protection measures in reduces the risk
Pole Wrap higher-risk areas. laad on
operational
programs over
time.
15 � Page
REU 2026 Wildfire Mitigation Plan
Manages the custamer Caardinates with
and community operational and
• Customer impacts ofi wildfire risk emergency
Service and and mitigation actions, �unctions; after-
Customer and Communications including PSPS action findings
5 Community and event
Emergency communication,
Resiliency � experience feed
Response and emergency back into
Recovery coordination, and �Qvernance and
restoratian and future program
recovery. improvements.
REU's wildfire mitigation portfolio is designed around five principles.
Firsfi, wildfiire mitigation is managed through a common portfolia governance structure thafi
coordinates each program's work. Each program has its own charter and execution
responsibilities, but all programs operate within a common ownership, reporting, and
review structure.
Second, risk intelligence drives action. The Wildfire Risk Framework and ODS provide the
analytical basis for where work is prioritized, how operations escalate, and where future
capital investment should be concentrated.
Third, the portfiolio distinguishes between operational risk management and strucfiural risk
reduction. Vegetation management, inspection, and operational controls reduce risk
continuously but require repeated interventian. Gapital programs reduce risk mare durably
by changing the underlying condition of the system.
Fourth, cross-cutting governance functions apply acrass the full portfalio. Governance,
compliance, and safety camplement program ownership by providing controls that keep
the portfalio accountable, auditable, and aligned with regulatary obligations and internal
standards.
Fifth, the portfolia is designed to learn. Annual metric review, after-action review, pragram
reporting, and executive oversight are intended to ensure that findings translate inta
updated standards, improved execution, and revised priarities in future years.
2.3 �ragram In��rde�enden�i�� and F�edback
The portfolio is designed so that outputs from each layer feed the next, and outcames
from all layers feed back inta the first thraugh a cantinuaus impravement cycle. An
overview of REU's wildfire mitigation portfolio is shown in Figure 2-1.
16 � Page
REU 2026 Wildfire Mitigation Plan
Diagram showing REU's wildfire mitigation portfolio organized araund risk intelligence, operational risk
reduction, capital risk reductian, customer and cammunity resiliency, and a safety and compliance
governance foundatian.
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w w �a e
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Q d��. w a ..�' � s .. a � ���. @;: �� � xi-: n:
Figure 2-9:REU Wildfire Mitigation Portfolio
Risk Framework outputs establish annual priorities, and ODS converts the same logic into
daily guidance. Operational and capital programs use thase outputs to target work,
prioritize investment, and determine when operating posture should change. Customer
and community resiliency pragrams use the same infarmation ta coordinate notifications,
customer support, and emergency response.
Operational findings, event reviews, annual metrics, and completed capital work return
fihrough governance to update thresholds, standards, program charters, and future
priorities. This feedback loop keeps the portfolio aligned as risk conditions, system
canfiguratian, and program performance change.
Table 2-2 assigns each program to a category owner and pragram manager. Section 3
defines the responsibilities and governance relationships associated with those roles.
17 � Page
REU 2026 Wildfire Mitigation Plan
Ta le - . f lio ners i tructure
-.• -.• ' .. . ' .. . .w -
Data, Assistant Wildfire Risk Assistant Director,
Analytics & Director, T&D Framework T&D
Risk
Data, Assistant Operational Decision Assistant Director,
Analytics & Director, T&D Support (ODS) T&D
Risk
Operational Assistant Vegetation Electric Manager—
Risk Director, T&D Management Field Operations
Reduction
Operational Assistant Asset Inspection Electric Manager—
Risk Director, T&D Program Field Operations
Reduction
Operational Assistant T&D System Electric Manager -
Risk Director, T&D Operational Practices E&O
Reduction
Capital Risk Assistant System Hardening Electric Manager -
Reduction Director, T&D Line
Capital Risk Assistant Fire Mitigation System Electric Manager -
Reduction Director, T&D U rades E&O
Capital Risk Assistant Fire Retardant Pole Electric Manager -
Reduction Director, T&D Wra Line
Customer & Assistant Customer Service & Electric Manager -
Community Director, Communications Customer Svcs
Resiliency Customer
Services
Customer & Assistant Emergency Response Electric Manager -
Community Director, T&D & Recovery E&O
Resiliency
18 � Page
REU 2026 Wildfire Mitigation Plan
. . . .
REU's wildfire mitigation portfolio requires caordination across multiple city departments
and regional agencies. The governance structure, city partnerships, and mutual aid
relationships described here are legally required under PUC � 8387(b)(2)(A) and
represent commitments REU must maintain regardless of annual program changes.
REU's wildfire mitigation partfolio is governed thraugh a multi-level structure that
distinguishes executive accountability, portfolio oversight, governance administration, and
program execution. The Electric Utility Directar serves as Portfiolio Owner, accounfiable far
porffolio integrity and for evaluating remaining wildfire risk in relatian to mitigation pasture
and resaurce decisians. The REU Risk Oversight Cammittee serves as the executive
oversight body for the portfolio. The Assistant Director, Transmission and Distribution,
provides day-to-day portfalio oversight and coordinatian acrass wildfire mitigation
programs. The Compliance Officer serves as Portfolio Governance L.ead for the WMP
Portfolio Governance Program and is responsible far governance cadence,
documentation cantrol, regulatory tracking, and portfolio integration support. Programs
are executed through designated Program Owners and Program Managers, typically at
the Electric Manager level.
Ta le 3-1: overnance les
'. - • . -� . ' ' - �. �
�
Portfiolio Owner Electric Utility Owns the WMP as an enterprise abligation;
Director approves portfolio structure; evaluates
remaining wildfire risk in relatian to
mitigation posture
Portfolio Campliance Officer Manages the WMP Partfalio Governance
Governance Program; coordinates gavernance cadence,
Lead documentation control, regulatory tracking,
and portfiolio integration support
,.... _._ . _______ . _...___ _. . __._..___. ._ ......... _.
Program Owner ; Defined by program Owns individual pragrams; maintains
(Table 2-2) pragram charter and annual report;
accountable for execution
Risk Oversight Risk Oversight Reviewslapproves material changes;
Cammittee executive direction; ensures enterprise risk
tolerance consistency
19 � Page
REU 2026 Wildfire Mitigation Plan
Gompliance REU Compliance Tracks cadence, regulatary changes,
Program Program document control; escalates missed
abligatians
Safety Program REU Safety Ensures safe execution; captures incidenfis
Program and near-misses; provides safety feedback
3.1.1 is v rsi t ittee
The Risk Oversight Committee (ROC) cansisfis af the Elecfiric Utility Directar, the
Assistant Directors of Transmission & Distribution, Resources, and Customer Services
and Metering, the Chief Information Officer, fihe Compliance Officer, and the chairs of the
subordinate committees. The ROC meets quarterly and reviews and approves material
changes ta wildfire mitigation pragrams and the overall portfolio.
3.1. r ra er st
Each of REU's eleven programs maintains a twa-part Pragram Charter that mirror the
Wildfire Mitigation Plan: Part 1 far stable program definition, Part II for annual
perFormance. This makes the portfolio auditable at any point and enables City Council
presentations to draw directly from Part II reports.
20 � Page
REU 2026 Wildfire Mitigation Plan
r a iz ti nal a
Organizatianal chart showing wildfire mitigafiian governance firom the Redding City
Council and City Manager ta the REU Director, Risk Oversight Committee, Compliance
Offiicer, and Assistant Directors responsible for program execution.
.e .. - o
Reddin�City Cciuncil
Gity Man�ger
� � � � w , �
��t1��r��t��(P��tf�l���e�r��r)
R�tains overal#executiue accountabiliry for the wildfire mitigatian strategy,
resourceal'locatiorr��,andp�rtfioliaintegrity. ,��
� � a� � � � � �» � � � • m> .
� ��� ••.��;... � s�����r�t� i���c��r, �� � �s��st�r�� ��r��t+�r;
,, •�' ......
��i�������r������������; ��r`�pl��r���:�ff���r"' T`r���s���6car��r�d ��as�c�r�n�r Ser�aic����sd
,�•� .
�,„.,,,,.:1 ,,,,,,,,,,,,,,,, ,,,,,,,;,,;'.�,., ,.,,.,:. ,;; .__ < 0�'�YS tl�UM1' ���X'!t1 -
Pro�ides in"ternat gouernance,
F'rbuides exe�ut�ue direction ;safety comptiance,and Leads operatic�naCexecutinn r�nd delivery of
and enterprise ris�C trlignment. regulatory oversight across the externalty facing wildfire mitigdtion prt�grams:
W%�t�f%CE'tYrt�1(,�'C7t1017�JO/YfO�%!3.
✓ Enterprise RiskAlignment ✓ Governance Prograrn W� ��e Ris CustomerService an
Framework Communications
✓ Programmatic Dir�ection '��� J Safety P�ogram � ✓�Operational De'cisPon ���
✓ Regulatory Compliance J Vegetation
J Cornpliance Prograrn
Review Mana�ement
✓'Inspection Program
✓ T&D System
C7neraCional Practices
✓;Systern Hardening
✓+Fire Mitigation System
U��rades
J Fire Retardant Pole
Wraq
J Emergency Response
Figure 3-9: REU Wildfire Mitigation Governance Organizational Ghart. Diagram showing
REU's wildfire mitigation portfolio organized araund risk intelligence, operational risk
reduction, capital risk reduction, customer and communifiy resiliency, and a safety and
compliance governance foundation.
21 � Page
REU 2026 Wildfire Mitigation Plan
ver nce le r
Table 3-2: Governance Galendar
- . ' ' - •s .
Q4 (prior year) Confirm program scope and Portfolio Governance Lead
ownership for upcoming year
January Collect executian data; initiafie Program Owners;
tracking for annual obligations Compliance
February Draft Annual Program Reports (Part Program Owners
II); review with Steering Committees
March Finalize reports; review material Program Owners; ROC
changes with ROC; fiinalize charters
__.. ._ __._ _____._.._ _..___..__ _ �
Apl'11 — May Draft updated Wildfire Mitigation Plan Portfiolio Owner
June -July Present WMP ta City Council Partfiolio Owner
(annual)
Following City Submit WMP to WSAB via OEIS Portfolio Governance Lead
Council portal (biennial)
adoption
2026 Independent evaluation of WMP Portfolio Governance Lead
(quadrennial)
3.2 G�t� of R�deling �oc�rdin�ti�n
REU operates as a department of the City of edding. Wildfire mitigation is a coordinafied
effort involving multiple city departments.
Table 3-3: City Coordination Partners
� �- ' • - ' � �. � � � � � -
�-�.
Redding Fire Jaint wildfire response; facility access City Council-approved
Department coordination; interagency response program
coordination; input an areas of fire
concern and public safety.
Redding Police PSPS public safety; traffic control; City interdepartmental
Department evacuation support caordination
_.__.._ _._._....._ _.. _.. _ ...._ _ __ _ ___ _______—
Public Works ' 8 workers funded by REU; WUI fuel City Council-approved
Department reduction partnership program
22 � Page
REU 2026 Wildfire Mitigation Plan
Gommunifiy Public notification, sacial media, Gity interdepartmental
Services / outage portal, and website coordination
Communications
SHASCO Dispatch fior PSPS area notifications; Regional dispatch
Dispatch emergency communicatian relay agreement
3. .1 e i ire rt ent
During 2025, REU provided funding support to the Redding Fire Department through the
Council-approved Wildfire Improved Respanse Program and plans to continue that
support in 2026. The partnership strengthens local emergency-response capacity,
supports rapid initial attack when fires threaten REU facilities or electric infrastructure,
and facilitates coardination with CAL FIRE and Shasta County during wildfire incidents.
Program scope and funding are reviewed thraugh the City's annual planning, budget, and
Council-appraval processes.
3. . in lice e e t
RPD provides public safety suppart during PSPS events and wildfire emergencies,
including traffic control and evacuation support.
3. .3 ulic rs ea et
REU funds eight PW workers for vegetation management and WUI fuel reduction in
partnership with the Parks Department Fuels Mitigatian Team.
3. . unit ic s a ic ti ns
All public-facing wildfire cammunications are coardinated thraugh the City
Communications Team, including social media, media releases, and outage portal
updates.
3. . is atc
S ASCOM serves as the regional dispafich agency for PSPS area notifications and
emergency communication relay.
3.3.1
REU participates in the California Public-Power Agencies Wildfire collabarative for shared
wildfire mitigation practices and regulatory coardination.
23 � Page
REU 2026 Wildfire Mitigation Plan
3.3. 1 n
REU operates within the Cal OES and SEMS framework for all emergency operations.
SC?P-200 implements ICS consistent with SEMS requirements, ensuring interoperability
with CAL FIRE and Shasta County OES.
3.3.3 Mutual Aid - CUEA
REU is a member af CUEA, providing access ta mutual aid crews and mafierials during
catastrophic events.
3. . Joi t 1 r i ati n
REU shares pole infrastructure with other electric utilities, telecommunications and cable
providers, with coordination protocols for planned wark, emergency access, and cost
sharing.
3.3. 1 ! i ir rt t tu I r at
The City of Redding maintains a Mutual Threat Zone (MTZ) Agreement with CAL FIRE I
Shasta County Fire Department that establishes a defined joint-respanse area along the
city's wildland edge. The MTZ covers approximately one-half mile inside the City limits
and one-half mile outside the City limits, as shown in F'igure 3-2. Within this area, the
agreement provides for coardinated, year-round response by both agencies to fires, trafFic
callisions, and wildland incidents threatening fihe interface. The purpose of the agreement
is to improve protection in this boundary area by sending the closest apprapriate
resources, reducing response times, and formalizing crass-jurisdictional response
expectations, communications, and operating procedures.
The MTZ is particularly important in Redding because it includes a substantial portian af
the community's wildland-urban interface, where rapid suppression access and resource
depth can materially affect cansequence. During fire season, the agreement supports a
multi-agency response to confirmed fires threatening the wildland and allows coordinated
use af CAL FIRE suppressian resources consistent with the operating plan, including
specialized wildland resources such as engines, dozers, aircraft, air tankers, helicopters,
and hand crews. When incidents accur within the MTZ, the agreement provides for
reciprocal support and, where conditions warrant, unified command and single-point
ardering of additianal resources thraugh the incident organization.
For REU, the MTZ is an important external coordinatian element within the broader
wildfire risk environment. It does nat replace REU's prevention and mitigation
responsibilities, but it strengthens suppression capability in and around REU's highest-
consequence interFace areas by formalizing coardination between Redding Fire and GAL
FIRE, including dispatch, communications, and resource-sharing protocols. That
coordination is relevant to REU's wildfire consequence and suppression-feasibility
considerations discussed elsewhere in this plan.
24 � Page
REU 2026 Wildfire Mitigation Plan
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Figure 3-2: GAL FIRE/Redding Fire �epartment Mutual Threat Zone. Map of the CAL FIRE and Redding
Fire Department mutual threat zone showing response areas around Redding, including areas assigned to
CAL FIRE, Redding Fire Department, and shared wildland-anly response.
25 � Page
REU 2026 Wildfire Mitigation Plan
. . � . .
REU evaluates wildfire risk thraugh a sequential, integrated framework built around four
risk drivers. Each driver addresses a distinct dimension, and no single driver is used in
isolation. The combined result praduces REU's risk picture as a structured assessment
that informs specific decisions across every program in the portfolio.
4a1 T'he F�ur-�ri��r R�sk Framew�rk
T le -1: our- river isk Fra e ork ve ie
' . - . . � ' - -�
1 Ignitian How likely is the electric Wind-based aperafiional
Probability system to produce an ignitian thresholds; PSPS wind criteria;
source? inspection priaritization
2 Ignition If a failure occurs, is there a Vegetatian Management
Pathways credible path from fault ta targeting; hazard tree
wildfire? prioritizatian; fuels reduction;
exclusion of low-pathway areas
3 Risk Timing & When do conditions escalate Operating State determination;
Escalation risk to an operational FPI'-based escalation; PSPS
concern? consideration windows
4 Consequence & If a fire starts, how severe PSPS circuit selection; eapital
Suppressian would the outcome be? prioritization
.1.1 is river 1: I iti n r itity
This driver evaluates the probability that a fault, failure, or equipment condition could
produce a spark or arc capable of igniting vegetation. REU's assessment is empirically
grounded in more than 20 years of historical outage data analyzed in relation to observed
wind speeds.
REU's analysis demonstrates a critical threshold: sustained wind speeds exceeding 20
mph produce a significantly increased likelihood of faults and equipment failures on the
overhead distribution and transmission system. Figure 4-1 visualizes this relationship,
showing outage frequency as a function of wind speed across REU's PSPS-eligible
circuits since January 1, 2005. The data shows limited wind-related response below
approximately 20 mph. At and above 20 mph sustained wind speeds, however, wind
begins to emerge as a more significant driver of outage activity, as mechanical stress on
conductors, crossarms, and connections becomes more operationally consequential.
26 � Page
REU 2026 Wildfire Mitigation Plan
This empirical relationship forms the foundation for REU's wind-speed-based operational
thresholds. As wind speeds increase beyond 20 mph, the probability that any given
equipment fault will produce an arc and potential ignition increases proportionally, driving
the Operating State escalation framework and PSPS trigger thresholds. The primary
outputs are wind-speed-based thresholds for escalating operational response, which are
detailed in Risk Driver 3 (Risk Timing & Escalation).
Outage Frequency as a Function ofi indspeed
�
2o�ro
o �s�io
_ �
� 16% _ _
Na
� 14% _ e __
�% 12% •`
+.�
Q 10% �e
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ct� a,
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0 6% ° _
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,
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�
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� 0% -e.. .__... ..._ ..aa..,m >a..oe m�a,.a _ _
I 0 5 10 15 20 25 30 35 40 45
I Windspeed Measured at ReddingAirport RAWS Station,MPH
Figure 4-1: Outage Frequency as a Function of Wind Speed. Ghart showing that the liketihood of an outage
per hour increases as measured wind speed increases, with a sharp rise at higher wind speeds above
appraximately 30 miles per hour.
.1. is river : I iti n t s
This driver evaluates whether the enviranment surrounding REU's overhead facilities
creates conditions where an equipment failure could transition to a wildfire. The
assessment uses a three-step methadology: baseline mapping, desktop analysis with
expert review, and field verificatian.
REU begins with CAL FIRE Fire azard Severity Zone maps and CPUC High Fire-Threat
District designations as the starting point. These maps identify areas with increased
wildfire susceptibility due to any cause.
REU conducts a circuit-by-circuit desktop review using aerial imagery, GIS data, and
subject matter expert judgment. Subject matter experts from T&D, Vegetation
Management, Operations, Engineering, GIS/Analytics, and the Redding Fire Department
27 � Page
REU 2026 Wildfire Mitigation Plan
jointly evaluate circuits and segments using the aerial imagery and fire threat maps as a
conservative baseline. This step identifies where credible ignition pathways exist:
* Segments with dense vegetation, continuous fuel loading, or terrain canditians that
would allow an equipment fault to transition to wildfire spread are confirmed as
pathways.
* Segments where aerial imagery and maps provide insufficient clarity are flagged
for field verification.
• Segments with minimal combustible vegetatian, sparse fuel continuity, or limited
exposure to wildland fuels may be explicitly excluded from pathway consideration.
Where desktop review cannot resolve uncertainty, REU conducts field visits with the
Redding Fire Department and ather subject mafiter experts from City departments. Field
assessment directly observes vegetation density, fuel loading, terrain access, and
proximity to structures. Field findings supersede desktop assessments. Outputs include
identification of circuit segments and locations with credible ignition pathways.
4.1.3 Risk Driver 3: Fire Weather Risk Timing and Escalation
This driver integrates real-time and forecast fire weather data to determine when
environmental conditions make ignition consequences most severe. EU uses a cusfiom
Fire Potential Index (FPI') as its primary risk timing indicator, computed from two National
Fire Danger Rating System (NFDRS) companents saurced from the USDA Forest Service
Fire Environment Mapping System (FEMS): Energy Release Component (ERC), which
represents eumulative fuel dryness and potential fire spread energy, and Burning Index
(BI), which represents potential fireline intensity and flame length.
FPI' combines ERC and BI using a methodalogy based on the Severe Fire Danger Index�
framework, by computing a percentile rank for each forecasted hour against 20 years of
hourly histarical fire weather data for REU's service territory. This normalization ensures
FPI' values reflect conditions that are extreme relative to REU's local historical narms. A
high FPI' value indicates the simultaneous presence af dry fuels (high ERC) and wind-
driven conditions (high BI), which together produce the most dangerous fire behavior.
REU downloads hourly weather forecasts fram the FEMS2 website and calculates an
hourly Fire Potential Index for each farecast period. This calculated FPI' is compared
against dynamic operational thresholds that define when canditions warrant escalation in
system posture. Nigher FPI° values require lower wind speeds to trigger aperatianal
response, while lower FPI' values require higher wind speeds. This relafiionship reflects
the potential for extreme fuel dryness to produce dangeraus conditions at moderate wind
' Jolly, W. Matt; Freeborn, Patrick H.; Page, Wesley G.; Butler, Bret W. 2019. Severe Fire Danger Index: A
forecastable metric to inform firefighter and cammunity wildfire risk management. Fire. 2: 47.
https:0/research.fs.usda.govOtreesearch/58973#
z https://fems.fs2c.usda.gav/download
28 � Page
REU 2026 Wildfire Mitigation Plan
speeds, while less extreme fuel conditions require more severe winds to reach
comparable risk.
FPI° is evaluated tagether with forecast wind speeds ta determine when aperatianal
thresholds are exceeded:
Table 4-2a: Operafiing Stafie Definitions and Triggers
.- . - ..- . • . .
OSO Normal � No eleuated fire weather Standard operations; no
Operations ; conditians fire weather controls
�
; active
_________---------- ---1------.
OS1 Elevated Fire FPI' > 0.90 forward-looking 3- Heightened awareness
Risk hour average forecast and system cantrols;
sustained wind wind > 15 mph, PSPS not implemented
OR NWS ed Flag Warning
issued
OS2 Extreme Fire FPI°Iwind thresholds met per PSPS consideration
Risk Table 4-2b active; suppression
resources available
__.
OS3 Extreme + �S2 conditions AND fire PSPS expanded ta
Cansfirained suppression resources limited additianal circuits;
or unavailable suppression capacity
cannot be relied upon
Table 4-2b: OS2IOS3 FPI' ind Threshold Criteria
' � •--� � • �
. •
FPI' >_ Q.97 ? 2Q mph sustained Very high fire danger; moderate wind triggers
PSPS
FPI' >_ 0.875 >_ 23 mph sustained High fire danger; stranger wind is required to
trigger PSPS
FPI' > 0.825 > 26 mph sustained Moderate-high fire danger with extreme wind-
driven potential
FPI" ? 0.8Q ? 5Q mph sustained Extreme wind-driven behaviar required to initiate
PSPS despite lower fuel danger
29 � Page
REU 2026 Wildfire Mitigation Plan
FPI° � 0.8Q PSPS is nat PSPS is not considered by the FPI'/wind model
considered. below this threshald
Between the listed FPI' reference points, REU's ODS model linearly interpolates the
sustained wind threshold. Meeting the FPI'/wind threshold does not automatically result in
PSPS; it initiates further evaluation under the full four-driver framework, including
consequence tier, suppression feasibility, operational feasibility, and Incident Commander
authorization.
Additionally, National Weather Service Fire Weather Watches and Red Flag Warnings are
integrated as contextual triggers. A Red Flag Warning is sufficient ta trigger OS1
regardless of real-time FPI'Iwind values.
REU applies ramp-up and ramp-down timeframes so escalatian and de-escalation
decisions reflect sustained risk conditians and account for short-lived forecast
fluctuations.
• �- • • �
Exceedance Nominal number of consecutive forecasted 6
Duration hours above OS2/OS3 FPI'/wind thresholds
Threshold used as a guideline before considering
Operating State escalation.
_ _.____ __...... . _ __ _ . _ _ _ __.__._____ ._
Initiation l..ead Lead time applied prior ta the first forecasted 2
Time hour of OS2 or US3 exceedance to allow orderly
implementation of aperational controls
- ---------
Look-Ahead Forward-looking window used to evaluate 12
Sustainment whether elevated conditions are expected to
Window persist or recur, supporting sustainment of
Operatin� State�asture
Termination Nominal number of consecutive hours below 4
Duration thresholds, with na forecasted near term
Threshold exceedance, used as a guideline before
considerin�_deescalation.
Night Patrol / Daylight dependent guideline: patrol and 1
Restoration restoration activities will not begin until safe
Constraint daylight canditions are available. The `1 hour'
value indicates a nominal evaluation interval, not
fihe total duration of nighttime conditions.
These parameters are reviewed annually and updated as part of the Wildfire Risk
Framework governance and continuous improvement process.
30 � Page
REU 2026 Wildfire Mitigation Plan
.1. is riv r : s uence n ressio si ilit
This driver evaluates the potential impact of a wildfire ignition event originating from REU
infrastructure. Like Risk Driver 2 (Ignition Pathways), it uses baseline mapping, desktop
analysis with expert review, and field verification. The assessment evaluates suppression
resource availability, terrain accessibility, and community exposure.
As with Risk Driver 2, REU begins with CAL FIRE Fire Hazard Severity Zone maps and
CPUC High Fire-Threat District designations, then conducts a circuit-by-circuit desktop
review using aerial imagery, GIS data, and subject matter expert judgment from T&D
Operations, Engineering, GIS/Analytics, the Redding Fire Department, and other City of
Redding subject matter experts. This step evaluates:
• Community exposure based on proximity to residences, critical facilities,
evacuation routes, and population density.
• Suppression resource positioning based on RFD station locations, response time,
and resource availability.
• Terrain and access constraints based on the ability of fire suppression equipment
and personnel to effectively reach the circuit and the surrounding terrain.
Outputs are Consequence Tier designations (Tier 0 through Tier 3) for each evaluated
circuit segment. The distinction between Tier 2 and Tier 3 reflects the accessibility of
suppression resources. Tier 2 circuits are located in areas with good terrain access,
adequate water availability, and proximity to fire stations, which support effective
suppression under normal conditions. Tier 3 circuits have more constrained terrain, more
difficult access, potentially limited water availability, or greater distance from fire stations.
Tier 2 circuits generally present manageable consequences when suppression resources
are available and positioned to respond. If those resources are committed elsewhere or
otherwise unavailable, Tier 2 circuits are treated as Tier 3 for operational risk purposes.
Accordingly, Tier 2 circuits are included in PSPS consideration when suppression
capacity is constrained and Tier 3 PSPS thresholds are met.
31 � Page
REU 2026 Wildfire Mitigation Plan
Ta le -3: onse uence Tier efinitions
.
. . � �- � � �
. ,- . . • . .
� �
Minimal/ 'mpacts limited;
Low fuel, good access,
Risk Tier 0: limited communifiy
Minimal Risk Na Tier �oderate suppression readily exposure. Standard
achievable controls are sufficient.
(mpacts or Proximi�y fo developmenf,
suppressian
Risk Tier 1: Tier 2 HFTD challenges are moderate fuel continuifiy.
Elevated Risk Enhanced protection
present but
manageable settings.
Dense fuels, good terrain
Good suppressian access, adequate water
Risk Tier 2: access; proximity availability and proximity to
High Risk Tier 3 VNFTD to substantial fire stations. PSPS is
vegetation eonsidered when
suppression resources are
unavailable.
Unacceptable ultiple high-risk factors.
Risk Tier 3: Tier 3 V FTD consequence PSPS may be warranted
Extreme Risk regardless af under extreme conditions.
suppression
.1. er tin t te , e uence Tiers, n er ti n I es ns
The four risk drivers combine to produce REU's complete risk picture. Risk Driver 1
(Ignition Probability) identifies when wind speeds make faults likely. Risk Driver 2 (Ignition
Pathways) identifies where those faults could transition to wildfires. Risk Driver 3 (Risk
Timing & Escalation) determines when fire weather conditions are severe enough to
warrant operational changes. Risk Driver 4 (Consequence & Suppression Feasibility)
identifies which circuits pose the highest consequences if ignition occurs. The Operating
State framework translates this combined assessment into specific operational actions.
The Operating State framework defines four system postures (OSO through OS3)
triggered by fire potential conditions (FPI' and wind speed thresholds from Risk Driver 3).
Within each Operating State, the specific operational actions taken on any circuit depend
32 � Page
REU 2026 Wildfire Mitigation Plan
on that circuit's Consequence Tier (from Risk Driver 4). The result is a matrix of decisions:
FPI'/wind conditions determine which Operating State REU enters, and Consequence
Tier determines how aggressively REU responds within that state.
Table 4-5 documents this decision matrix, showing how operational response escalates
as both fire potential and circuit consequence increase. The progression reflects a
fundamental principle: circuits with the highest consequence receive the most aggressive
protective actions, but only when fire potential conditions justify them. A Tier 0 circuit
remains in normal configuration even during OS2 or OS3 because its low consequence
makes de-energization unwarranted. A Tier 3 circuit in OS1 receives enhanced protection
(Hotline mode, reclosing disabled) when elevated fire conditions and high consequence
require heightened vigilance before PSPS thresholds are reached. A Tier 3 circuit in OS2
or OS3 is eligible for PSPS de-energization because the combination of extreme fire
potential and extreme consequence makes de-energization the appropriate risk mitigation
action.
This integrated framework ensures that REU's operational response is proportional,
defensible, and focused on the circuits where risk is actually concentrated.
Table 4-5: Operational Response by Operating State and Consequence Tier
•.- . ' 1 ' ' '
OSQ — Normal - No Normal - No Normal - No � Narmal - Na
Normal change to change to change to change to
Operafiions circuit circuifi circuit circuit
configuration. configuration. configuration. configuration.
OS1 - Normal - No Recloser - Recloser - Hotline -
Elevated Fire change to Reclosing Reclosing Reclosing
Risk circuit disabled at disabled at disabled and
configuration. the the enhanced
substation. substation. protection
Field work Field work enabled at the
restricted. restricted. substation
breaker.
OS2 - Narmal - No F2ecloser - Hotline - Hotline (PSPS)
Extreme Fire change to Reclosing Reclosing - Portions af
Risk circuit disabled at disabled and Tier 3 circuits
configuration. the enhanced de-energized
substafiion. pratection when IC
Field work enabled at the determines
restricted. substation threshold
breaker. exceeded.
33 � Page
REU 2026 Wildfire Mitigation Plan
OS3 - Narmal - No Recloser - atline atline
Extreme + change to Reclosing (PSPS) - (PSPS) -
Constrained circuit disabled afi Portions of Portions of
Resources configuration. the Tier 3 circuits Tier 3 circuits
substation. de-energized de-energized
Field work when IC when IC
restricted. determines determines
threshald threshold
exceeded. exceeded.
Historically, REU relied primarily on the CPUC High Fire-Threat District map to
characterize geographic wildfire risk within its service territory. That map remains an
important regulatory reference and continues to inform REU's wildfire mitigation planning.
In 2024, however, REU and the Redding Fire Department identified additional areas
where local conditions suggested greater wildfire consequence and exposure than was
reflected in the CPUC map alone. That assessment was based on local knowledge of
fuels, terrain, suppression access, and proximity to developed areas.
When CAL FIRE released its updated Fire Hazard Severity Zone map in summer 2025,
the areas REU had previously identified as higher concern were generally consistent with
the revised hazard designations. For 2025 planning purposes, this reinforced REU's
assessment that CAL FIRE Fire Hazard Severity Zone mapping, together with local
operational knowledge, provided a useful supplemental input for evaluating wildfire
hazard and consequence within the REU service territory. CPUC High Fire-Threat District
designations remained an important regulatory reference and continued to inform REU's
wildfire mitigation planning.
Looking ahead, REU intends to use multiple complementary sources of wildfire risk
information to evaluate wildfire risk across its service territory. REU expects to continue
using CPUC HFTD designations as a regulatory backdrop, CAL FIRE Fire Hazard
Severity Zone mapping to characterize broader wildfire hazard conditions, and advanced
wildfire modeling and IocaliZed risk analysis to better understand where utility-caused
ignitions could result in the greatest consequences. Together, these tools will support
more precise internal prioritization, operational decision-making, and capital planning
while maintaining consistency with adopted regulatory frameworks.
34 � Page
REU 2026 Wildfire Mitigation Plan
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Figure 4-2: CAL FIRE Fire Hazard Severity Zone lt�ap with Overhead Circuit Routing �verlay. REU's
service territory showing CAL FIRE moderate, high, and very high fire hazard severity zanes overlaid with
overhead transmissian and distribution circuit routing.
35 � Page
REU 2026 Wildfire Mitigation Plan
.3.1 !i at an e
The wildfire risk environment continues to change. Climate change is increasing the
likelihood of hotter conditions, more extreme heat, greater hydroclimate volatility, reduced
snowpack, and larger wildfire potential across California and Northern California.3�4 For
REU, these trends matter because they can extend the duration of the fire season,
accelerate fuel drying, and increase the number of days on which an equipment failure
could result in a fast-moving wildfire.3,4
REU reviews climate projections for the Sacramento Valley and Redding area through
Cal-Adapt and California climate assessment materials as part of its WMP planning cycle.
Taken together, these sources point in the same general direction: increasing heat,
greater variability, and worsening wildfire conditions over time. 3,4,5
.3. Te erat re
California climate assessments project continued increases in temperature statewide
through mid-century and late century.3 The Sacramento Valley regional assessment
provides more localized context, indicating substantial warming during the summer
months, particularly in inland areas.4 Shasta County climate materials similarly project
increasing July average temperatures in the North Region over time.5 These trends are
relevant to REU because higher temperatures contribute to fuel drying, longer fire
seasons, and more severe fire-weather conditions.3,4,5
.3. xtr e eat
Extreme heat events are expected to worsen sharply in frequency, duration, and
geographic extent. The Sacramento Valley regional report projects that under a high-
emissions scenario, Sacramento would increase from approximately 4 extreme heat days
per year historically to approximately 40 per year by end of century. Cal-Adapt's Extreme
Heat tool defines an extreme heat day as a day exceeding the 98th percentile of
observed temperatures from 1961-1990 during the April—October period. More frequent
and intense heat events accelerate fuel drying and elevate ignition probability throughout
the fire season.3,4,6
3 California Energy Cammission, California's Fourth Climate Change Assessment(201$}.
° California Energy Commission, Sacramento Valley Region Repart, California's Fourth Climate Change
Assessment(2018).
5 California Qepartment of Public Health, Climate Change and Health Profile Report: Shasta County(2Q17).
6 Cal-Adapt, Extreme Heat Tool/Methodology.
36 � Page
REU 2026 Wildfire Mitigation Plan
.3. reci itati n r cli te olatility
Average annual precipitation may remain relatively stable, while precipitation patterns are
projected to become more variable.4 The Sacramento Valley regional assessment
indicates that Northern California is expected to experience greater swings between dry
and wet conditions, including more pronounced drought-to-deluge variability.4 For REU,
that means planning for stronger shifts between prolonged dry periods that increase fuel
stress and wetter periods that increase vegetation growth and ladder fuel loading.
.3. ack n un
California climate assessments project meaningful declines in mountain snowpack over
time, with corresponding changes in runoff timing and seasonal soil moisture.3 Shasta
County climate materials similarly indicate major reductions in March snowpack by late
century in the North Region.5 Earlier and reduced snowmelt runoff can contribute to drier
late-spring and summer conditions, which in turn affect vegetation dryness and fire
behavior.3,5
.3. il fir r a n ir r u c
California climate assessments project increasing wildfire activity under future warming
scenarios, including increases in average area burned and the frequency of very large
fires.3 Shasta County climate materials also indicate substantial long-term increases in
wildfire risk, and REU uses those county-level multipliers solely as directional context.5
The overall implication for REU is a continuing increase in the probability of large, fast-
moving fires affecting or threatening the service territory.3,5
.3.7 i n a t t r s
REU considers regional fire-planning information applicable to the Redding area,
including the Shasta-Trinity Unit Fire Plan battalion planning context, together with local
operational experience and REU's own risk-analysis framework in characterizing
prevailing wind conditions. In the greater Redding area, seasonal wind patterns vary over
the course of the fire season. Under typical summer conditions, afternoon winds are
commonly from the south or southwest, with terrain- and drainage-influenced upslope and
up-canyon flow. North and northeast wind events also occur and can strengthen after
dark while maintaining lower relative humidity, creating conditions that can support more
rapid fire spread and higher consequence.'
Real-time and forecast wind data are integrated into REU's Operational Decision Support
system through the Fire Potential Index (FPI'), which combines the Energy Release
Component (ERC) and Burning Index (BI) from the National Fire Danger Rating System.
Wind-speed thresholds derived from this analysis govern Operating State transitions. As
wind speeds increase, the probability that any given equipment fault will produce a
' CAL FIRE, Shasta-Trinity Unit 2025 Fire Plan, May 7, 2025
37 � Page
REU 2026 Wildfire Mitigation Plan
sustained arc and potential ignition increases, driving escalation from Normal to Recloser
to Hotline operating state. These thresholds are documented in Section 5.3.
.3. li t is I f r s lan in
REU recognizes that climate change is increasing long-term wildfire risk across its service
territory by extending fire seasons, worsening fuel conditions, and increasing the
frequency and severity of fire weather. In the near term, REU continues to rely on
operational programs to reduce risk, including vegetation management, inspection,
situational awareness, and operational controls. Those measures remain necessary, but
they rely on continuous maintenance and repeated intervention.
Climate risk therefore also informs REU's capital planning. As conditions worsen over
time, REU intends to increase the use of capital measures that materially reduce or
eliminate risk while continuing appropriate operational controls. These measures may
include overhead-to-underground conversion, covered conductor where appropriate, and
other system hardening investments. The long-term objective is to adapt the system to a
more severe wildfire environment by shifting targeted portions of the portfolio from
ongoing operational risk management to structural risk reduction.
Ta le - : isk river t ro ra Tr c a ility
' � m . ' e� - -s
Driver 1: Ignition 5.2 Inspection; 5.3 T&D Ops; 6 Inspection prioritization; wind-
Probability Capital based OS thresholds;
hardening of high-fault
segments
Driver 2: Ignition 5.1 VM; 6.3 Pole Wrap; 7 VM targeting and clearance;
Pathways Technolagy fuels reductian; hazard tree
prioritization; camera
placemenfi
Driver 3: Risk 5.3 T&D Qps; 7.1 QDS; 8.2 OS determinatian; 7-day
Timing PSPS outlook; PSPS trigger
evaluation; patral posture
changes
Driver 4: 6 Capital; 8.2 PSPS; 8.4 Capital prioritization; PSPS
Gansequence Emergency circuit selection; restoration
priority sequencing
38 � Page
REU 2026 Wildfire Mitigation Plan
. . .
Three programs farm the operatianal core af REU's wildfire risk managemenfi system.
Together, they keep REU's infrastructure in a fire-safe state year-round thraugh
systematic vegetation elearance, equipment inspection and repair, and operating posture
changes that reduce ignition risk when weather is most severe. All three are driven by the
risk intelligence described in Section 4.
. i r r
Vegetation in contact with or near energized conductors is a significant pathway for utility-
related wildfire ignitions. REU's Vegetation Management Program reduces this risk
through a comprehensive, risk-driven inspection and clearance system that operates
year-round. The program also reduces fire spread potential by maintaining defensible
space at pole bases and clearing combustible fuels in surrounding terrain. These
activities create firebreaks and limit the fuel continuity that could allow an ignition to
develop into a spreading wildfire.
The program is inspection-led and risk-driven: detailed arborist assessments identify
vegetation threats, classify them by urgency, and drive all downstream clearance and
fuels reduction work. A two-phase annual cycle ensures that REU identifies threats in a
timely manner and addresses regrowth during peak vegetation activity. All work is
performed to CPUC General Order 95 standards, ISA/ANSI arboricultural best practices,
and REU-specific standards that often exceed regulatory minimums, particularly in Tier 2
and Tier 3 fire threat areas.
.1.1 ase n al lns ectio cle
Phase 1: Annual System Inspection (September 1 through December 31). Certified
Arborists and Registered Professional Foresters conduct 100% systemwide visual
inspections of all overhead distribution and transmission facilities. Using TRAQ principles
and Level 1/Level 2 visual inspection protocols, inspectors evaluate vegetation proximity
and failure potential, with results incorporated into REU's wildfire-risk prioritization and
mitigation process. All inspection data is captured electronically in REU's ESRI-based
GIS Field Map application with required fields, geospatial location, photographic evidence
where applicable, and priority classification.
The September-December timing aligns with the end of the annual growth cycle and
positions REU to identify conditions before fire season and address them during pre-
season work windows. This is when vegetation has completed its annual growth and
conditions stabilize, allowing for the most accurate assessment of what will persist
through the fire season.
Phase 2: Mid-Year Cycle Buster (May 1 through June 30). A targeted reinspection of
Tier 2/3 circuits is conducted during the period of accelerated spring/early summer
_ 39 � Page
REU 2026 Wildfire Mitigation Plan
growth. This phase verifies that previously cleared spans remain compliant, identifies
vegetation regrowth that may require additional mitigation, and catches any new
conditions requiring immediate action. The May-June timing targets the window when
vegetation is growing most rapidly but before mid-summer conditions stabilize. This
proactive approach catches emerging threats early, reducing the number of reactive P1
conditions that would otherwise accumulate during fire season.
Together, the two-phase cycle improves early risk identification and seasonal validation
while minimizing reactive mitigation during critical fire season periods.
Inspection Methodology and Priority Classificafiion
Inspections are performed by Certified Arborists or Registered Professional Foresters
trained in tree risk assessment and local vegetation characteristics. All inspections follow
TRAQ principles, ISA/ANSI standards (Levels 1 and Level 2 protocols), CPUC GO 95
Rule 35, and REU specified methods and standards for clearance. Each tree or
vegetation condition observed is assigned a priority classification:
• Priority 1 (P1): Immediate Action (72 hours). Vegetation is actively violating
required clearance, showing signs of burning, in direct contact, or presenting
immediate fall-in risk. P1 conditions are corrected within 72 hours and are tracked
through completion.
• Priority 2 (P2): Monitor Closely. Vegetation remains outside required clearance
and is approaching the clearance limit, with likely noncompliance before the next
inspection cycle. P2 conditions are scheduled for mitigation during routine work
cycles.
• Priority 3 (P3): Routine Monitoring. Well outside clearance requirements and
posing no immediate risk. P3 conditions are monitored during future inspection
cycles.
• Facility Protection (FP): Dead, dying, diseased, or structurally compromised trees
with sufficient height and failure potential to strike overhead facilities. FP trees are
evaluated for removal or intensive hazard mitigation.
All inspection data is recorded at the pole-to-pole span level with additional detail where
vegetation conditions vary. The tablet-based inspection application provides direct input
into the permanent backend database. The database allows management to review
records, provides web-based dashboarding, and granular compliance evidence for
regulatory defensibility and work planning. Figure 5-1 and 5-2 show the field data
collection tool and management dashboard, respectively.
40 � Page
REU 2026 Wildfire Mitigation Plan
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Figure 5-9: Vegetation Field Inspection Form. Screenshot of a mobile vegetation inspection form showing a
map of inspection points near the Sacramento River and a selecfed vegetation risk record with inspection
details, species, status, and work requirements.
41 � Page
REU 2026 Wildfire Mitigation Plan
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Figure 5-2: Vegetatian Management Dashbaard. Screenshot of the REU vegetation management
dashboard showing mapped inspection locations, fire hazard areas, inspection trends, and summary counts
for trees remaining, trees identified, inspections completed, and mitigation work.
.1. 1 ar nc tan r s a 1 1 ntati n
REU maintains clearance standards that meet or exceed CPUC minimums in fire threat
areas:
Ta le 5-1: e etatio learance ta ar s
. . .
.
.
Service Mitigate excessive Clear barrel around service conductor (where
conductors strain, abrasion, or feasible)
safety concerns
Secondary '2 fieet 2 feet + enhanced monitoring
conductors
12 kV g feet 12 feet (where feasible)
primary
115 kV ' 15 feet 3� feet (where feasible)
transmission
Priority 1 (P1) violations are addressed within 72 hours by internal tree crews or qualified
contract line-clearance arborists. Routine work follows an annual cycle with pre-season
completion of Tier 2/3 circuits where feasible. All pruning follows ISA best practices and
ANSI standards, emphasizing natural pruning techniques, directional pruning to guide
42 � Page
REU 2026 Wildfire Mitigation Plan
regrowth away from conductors, and removal of dead or failing limbs. Damaging practices
(flush cuts, stubbing) are prohibited.
Work is performed in compliance with Cal/OSHA standards, including qualified personnel,
defined minimum approach distances, and procedures for de-energization when required.
Crews are also authorized to address vegetation encountered in the field that meets non-
compliance criteria, even without a prior inspection record these trees are mitigated at
discovery and subsequently documented.
.1.3 r u se an le le r ce
REU maintains a 10-foot cleared zone around select utility poles consistent with PRC
4292 requirements. Ground base clearance removes combustible vegetation and debris
from the immediate vicinity of poles and associated equipment, reducing the fuel
continuity that would allow an ignition at the pole base to transition into ground-level fire
spread. This is particularly important in high-consequence Tier 2/3 areas where dense
fuels surround the infrastructure. Figure 5-3 shows a before-and-after image of a 115 kV
transmission right-of-way.
43 � Page
REU 2026 Wildfire Mitigation Plan
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Figure 5-3: Before and After Image of Cleared 115 kV Right of Way. Side-by-side photos of a 115 kV
transmission right-of-way before and after vegetation c/earance, showing dense vegetatian near utility poles
on the left and cleared ground around the poles on the right.
44 � Page
REU 2026 Wildfire Mitigation Plan
.1. T r ete uels e ucti n n e r zi
Beyond direct line clearance, REU conducts targeted fuels reduction on REU-managed
sites and adjacent Wildland-Urban InterFace (WUI) areas in partnership with the City of
Redding. Treatment methods include mechanical mastication, chemical application, hand
crews, and managed grazing. Fuel reduction work is sequenced to address corridor-level
regrowth patterns identified through inspection data.
Managed goat grazing is used in large terrain-constrained areas where mechanical
access is limited or where landscape-level fuel reduction is desired. Grazing promotes
defensible space and reduces fuel continuity across larger areas, supporting the objective
of creating firebreaks and limiting the spread potential of ignitions that do occur.
Invasive grass management, including mechanical mastication, targeted chemical
application, and hand treatments, is coordinated with the City of Redding Parks
Department and addresses invasive species that promote fire spread regardless of
proximity to REU facilities. Citywide invasive grass reduction supports REU's landscape-
level fire mitigation objectives and community resilience, including in areas outside the
immediate vicinity of REU lines.
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Figure 5-4:Redding Police Officer Performing Traffic Cantrol for Ground Glearance Goats. A large herd of
goats is moving across a streef while a Redding police vehicle and personnel provide traffic control for
managed grazing used in graund clearance work.
45 � Page
REU 2026 Wildfire Mitigation Plan
.1. u lity ssurance an rrective ctio
REU maintains a formal QA/QC framework ensuring inspection accuracy and regulatory
compliance. QA is established through qualified inspectors, standardized TRAQ-based
protocols, electronic data collection with mandatory fields, and training on data entry
standards. QC is implemented through field and desk audits (reviewing priority
classifications and photographic evidence), targeted reinspection of P1 findings,
immediate hazard escalation for P1 conditions, and data integrity checks.
When quality issues are identified, REU applies structured corrective action, including
correction of records, focused retraining, reinspection, and crew feedback integration.
Inspection data is analyzed over time to identify recurring P1 locations, regrowth patterns,
and the effectiveness of prior mitigation actions. As conditions evolve, REU updates
inspection guidance, training, and QA/QC criteria accordingly
Electric infrastructure deteriorates continuously. Poles age and lose mechanical strength.
Hardware corrodes and loosens. Insulatars develap cracks from thermal cycling and
contamination. Conductors and conneetions degrade. Many of these conditions gradually
increase fault probability over months or years until an external stressar triggers a sudden
equipment failure. REU's Inspectian Program finds these conditions before they cause
outages or ignitions by systematically surveying the distributian system, documenting
every deficiency, and driving corrective action an a risk-prioritized timeline.
The program's primary purpose is to locate defects, characterize their severity, and
ensure they are corrected within timelines propartional to risk. Wildfire risk management
is integrated through prioritizatian. Conditions located in Tier 2 and Tier 3 High Fire-
Threat Districts receive elevated response requirements under GO 95 Rule 18. The
program directly supports Risk Driver 1 by reducing the probability that equipment
degradation will produce a fault capable af igniting vegetation.
. .1 Ins ecti Ty es an vera e
REU conducts three types of inspections on defined cycles, as required by CPUC
General Order 165. All inspections are performed by REU Journeyman Linemen who are
qualified by training and experience to recognize electrical system defects, wildfire ignition
hazards, and non-compliant canstruction.
• atrol Ins ections: Annual visual survey of all applicable overhead and
underground facilities, conducted from the ground or from vehicles. Patrol
inspectians identify obviaus defects, deteriaratian, clearance violations, and visible
hazards: the first systematic pass at current system condition. Coverage is 100°/a
of applicable locatians, completed annually.
• etail Ins ecti ns: Claser visual and tactile assessment of pales, crossarms,
canductors, hardware, and cannections, performed on defined multi-year cyclss.
Detailed inspectians reveal conditions that patrol may miss such as cracked
crossarms, poletap decay, and leaking transformers.
46 � Page
REU 2026 Wildfire Mitigation Plan
• I trusive Ins ections: Ground-line excavation and direct assessment of pale
condition below grade, where decay most commonly originates. Intrusive
inspecfiians provide the only reliable assessment of structural integrity for wood
poles and are perFormed on defined multi-year intervals.
. . ri ritiz ti n: ule 1 an t -L v 1 st
Every identified defect is assigned a priarity level using REU's P-level condition rating
system, whieh implements GO 95 ule 18 corrective action requirements. The P-level
reflects condition severity and is independent of location. Fire-threat tier affects the
required response window. ule 18, Level 2, has three different ceilings depending on the
condition type and location. When a defect meets multiple criteria, the most conservative
P-level gaverns.
Table 5.2-1. P-Level Classification and Required Response Windows
' . • . . ' -• -� '- ••
P1: Immediate safety hazard; <_ 72 hours (or sooner if hazard
Emergency evidence of ignition or credible controls require)
imminent ignitian risk
P2: High High-risk condition requiring <_ 6 manths
near-term correction
P3: Medium Moderate-risk candition � 12 manths
(fiire risk in Tier 2 FTD, or warker
safety)
<_ 36 manths
(all other conditions)
P4: Law Low-risk condition C 36 manths
P5: onitar No maintenance required at Reevaluate at next inspectian cycle
this time; monitor for changes
. . 1 s -Lo r fl
The program follows a structured workflow fram scheduling through verified closeout.
Inspections are scheduled based on GO 165 cycle requirements, Tier 2/3 fire-threat
exposure, asset criticality, and operational constraints, with higher-risk areas sequenced
first. REU Jaurneyman Linemen conduct field inspectians, doeument defects with
photographs and location data, and assign a preliminary P-level. The Electric Program
Supervisar reviews all identified defects, validates fire-risk classification and priority, and
establishes required corrective actian timelines. Approved work is then planned and
executed by REU line crews. Upon completian, carrective actions are verified and the
defect record is formally closed out in REU's GIS inspection portal and Lifecycle
database, maintaining full traceability from identification through correction.
47 � Page
REU 2026 Wildfire Mitigation Plan
. . cu ent ti n n t ste s
F2EU maintains three integrated systems to suppart inspectian quality, traceability, and
corrective action management. The tablet-based inspection program is the field job aid
that supparts consistent data collection and quality in the field. The REU GIS Inspection
Database is the system of record for defect documentation and geospatial inspection
history. The Lifie Gycle Database is used ta assign, track, and manage carrective work,
whether the item requires a formal work order or can be completed directly by field crews.
Figure 5-5 shaws one example ofi the tablet-based field data collection form for poles.
48 � Page
REU 2026 Wildfire Mitigation Plan
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Figure 5-5:Example Asset/nspection Field Data Collection Form. Screenshot of a mobile REU pole
inspection form showing defect information, pale candition rafing, maintenance priority levels, and
recommended corrective action for a woad pole inspecfion.
49 � Page
REU 2026 Wildfire Mitigation Plan
Vegetation management and inspection programs reduce ignition risk by maintaining
clearances and identifying equipment defects before they fail. But when fire weather
conditions become extreme, the likelihood and consequences af any faurt may be greater,
regardless of how well-maintained the sysfiem is. The T&D System Operational Practices
program manages this residual risk by changing how REU operates its system in real
time during elevated fire weather canditions.
When Operational Decision Support (ODS) forecasts an elevated risk window and
conditians meet Risk Framework thresholds, REU system aperatars must reconfigure the
system and lead field crews through a defined set af actions covering the period before
conditions arrive, the event itself, and restaration once conditions improve. This program
governs all of that wark: the protection canfiguration changes, the patrol pasture, the
switching execution, and the de-energization decisions that collectively minimize the risk
that REU"s system contributes to a wildfire during the periods when that risk is highest.
5.3.1 Operating State Framework
REU uses four defined Operating States (OSO—OS3) to translate fire weather conditions
into a prescribed operational posture. The Operating State definitions, trigger thresholds,
and FPI'/wind criteria are established in the Risk Framework and summarized in Section
4.1.5 (Table 4-5). Operating State determination is made hourly during fire seasan based
on FPI', wind forecasts, and NWS warnings provided by ODS. OS1 may be declared by
the system operatar on shift, OS2 and OS3 require Incident Commander authorization. All
transitions are timestamped and logged in the Control Room Lag.
5.3.2 Protection Gonfiguration Management
The specific protection configuration applied to each circuit at each Operating State is
defined in Table 4-5. As conditions escalate, REU applies an increasingly protective set of
measures that build on each other.
At OS1, automatic reclosing is disabled at the substation on all Tier 2 and Tier 3 overhead
circuits. Under normal operating conditions, automatic reclosers attempt to restore service
after a fault. During elevated fire weather, an automatic reclose can re-energize a fault
against vegetation or a downed conductor that the initial trip may have cleared
momentarily, and that second energization under extreme conditions can be sufficient to
ignite a wildfire. Disabling automatic reclosing eliminates this risk and is one of the
highest-value, lowest-cost wildfire risk reduction measures.
On higher-consequence circuits, hotline mode is also applied at the substation breaker.
Hotline mode tightens protection settings so the breaker trips faster and with fewer cycles
than under normal settings. Because the settings are applied at the breaker level, hotline
mode affects the entire circuit. This reduces the arc energy released during a fault event.
Because arc energy is proportional to ignition potential, a faster, lower-energy trip is less
likely to produce a spark capable of starting a fire.
50 � Page
REU 2026 Wildfire Mitigation Plan
At OS2 and OS3, all OS1 measures remain active and PSPS is additive. When the
Incident Commander determines that continued energization of a circuit segment is
indefensible given fire weather conditions, consequence tier, and suppression resource
availability, REU de-energizes targeted segments through manual field switching.
Because distribution circuits cannot be isolated and sectionalized through SCADA, crews
physically operate switches in the field from pre-built switching orders. The result is that
any de-energized segment sits adjacent to a system already operating in its most
protective configuration.
. .3 e i ss n t i itc s
PSPS execution under time pressure is operationally complex as operatars must safely
work with field erews to isolate circuit segments in the correct sequence without
introducing new hazards. REU prepares for this effort by maintaining a standing switch
lag: a set of pre-built switching orders covering all PSPS-eligible circuit segments,
maintained year-round so that the bulk of the switch order is prepared well in advance of
an OS 2/3 event.
Ta le .3-1. tan in itc L - Lifecycle
A � .
Standing Switch Pre-built switching arders covering all PSPS-eligible circuit
Log Development segments. Each switching order documents the exact sequence
af switching actions required ta safely de-energize and re-
energize a segment, including isolation points, clearance points,
and restaration sequence assuming normal system configuration.
Pre-Season
Verification
Before each fire seasan, the �perations Supervisor reviews all standing switch orders for
consistency with the current system configuration. Changes since the last verification,
including outages, construction, ar reconfigurafiion, require switch order revisian befiare
the season opens. Verified orders are signed off and recorded.
' : - . �. . �. -� .
� � • •- -� .�.
. . . - . -� .
• • - �� . -� �- � - . • � � --�
Executian When PSPS is authorized, System Control Operators execute
pre-built switching orders in the approved sequence. Operatars
record each switching action with timestamp.
Post-Event Pre-built restoratian arders gavern re-energization sequence. e-
Restoration energization begins after post-event patrol has cleared affected
51 � Page
REU 2026 Wildfire Mitigation Plan
_.._____._
segments and the Incident Commander has authorized
restoration.
The standing switch log was validated through the 2025 fire season.
5.3.4 PSPS Sequence
PSPS is a last-resart mitigation applied when the combination af fire weather conditions,
cansequence tier, and suppression resource availability makes continued energization of
a circuit segment indefensible. The threshold criteria and circuit eligibility logic are
established in the Risk Framework (Tables 4-2 and 4-5). This secfiian describes the
execution and governance sequence.
Ta !e . . e uence
..- • . �- . .
. . .
. •
1. 168 hours ODS confirms forecasted FPI' and wind conditions meet or
Threshold exceed PSPS threshold criteria (see Table 4-2).
Evaluation Consequence and suppression feasibility criteria
evaluated for affiecfied segments per Table 4-5.
2. incident 96 hours Incident Commander reviews the farecasted fihreshold
Commander status, segment consequence tier, suppression resource
Review availability, and custamer impact.
3. Custamer 72 hours Custamer Service & Communications executes the pre-
Notification notification sequence for affected customers.
4. Switching 2 hours System Control Operators execute pre-built switching
Execution orders in the approved sequence. De-energization is
sequenced by segment per the approved switching plan.
Each switching action is logged.
, .._... _ _. _ _ ....... _ _..__..__ _ _._____
5. IC- All clear IC authorizes restaratian anly after patrol verification is
Authorized camplete and all findings are resolved. Re-energization
Restoration proceeds per pre-built restoration orders. Customer
Service manages restoration communications.
6. After- One week after Every PSPS event triggers a structured after-action
Action restoration review. Findings are documented and integrated into the
Review following season's plan and controlled technical document
updates as appropriate.
.3. nnu I e iness a ontinu us 1 r v ent
52 � Page
REU 2026 Wildfire Mitigation Plan
• Before each fire season, the Operations Supervisor verifies currency of all standing
switch orders against current system configuratian, confirms crew training
completion, and reviews any threshold updates issued through the controlled
technical document pracess. An annual drill exercises OS2/OS3 response
workflows under simulated conditions to validate crew proficiency before an actual
event.
• After-action reviews are completed far every OS2 and OS3 event and every PSPS
activation. Findings are integrated into the following season's plan and, where
fihreshold ar canfiguration changes are warranted, into cantrolled fiechnical
document updates.
• A post-season program review assesses overall readiness performance,
documents lessons learned, and identifies improvements for the coming year.
53 � Page
REU 2026 Wildfire Mitigation Plan
.
Operational programs cantinuausly manage risk thraugh recurring fieldwork and
operational changes. Capital programs permanently change the system's risk prafile.
Where operational programs respond to current conditions and current weather, capital
programs eliminate or reduce the sources of risk so that future operational programs have
less ta manage. The investments campound over time: each retrafitted pole, each
converted circuit, each wrapped structure reduces the baseline risk load that crews and
aperators must manage during every fire season going farward.
REU's capital risk reduction portfalio consists of three programs, each addressing a
different dimension of infrastructure-based risk: the System Hardening Program targets
ignition risk at the pole-top equipment level; the Fire Mitigation System Upgrades
Pragram addresses larger-scale circuit-level interventions, including relay and protection
upgrades, covered conductor, and targeted undergrounding; and the Fire-Retardant Pole
Wrap Program protects pale structures from damage if a wildfire reaches REU
infrastructure. All three programs are prioritized using Risk Framework outputs and
Inspection Pragram findings.
The System Hardening Program reduces wildfire ignition risk at the individual asset level
by retrofitting pole-top equipment in Tier 2 and Tier 3 fire threat areas and in Wildland-
Urban Interface locations. Hardening investments pravide persistent, year-raund risk
reduction independent of crew intervention or system configuration changes.
The program targets the conditians that appear most frequently in REU's Inspection
Pragram findings and historical ignition record: arc events at pole-top equipment and
wildlife contact with energized conductars. Candidate locations are identified by
combining Wildfire Risk Framework consequence tier designations with documented
deficiency patterns. Lacations with elevated ignition pathway risk and potential
consequence receive the highest priority.
.1.1 1 - ar i etr fits
REU installs three classes of ignition-mitigating companents at targeted pole-top
lacations:
Ta le -1. ole-T ar enin o nents
54 � Page
REU 2026 Wildfire Mitigation Plan
. •. ' ' �• - -� . ' -� • � ' .•. �
�
Non-expulsion fuses Equipment arcing during ; Reduces fault energy available to
fault events ' ignite; limits arc duration and
plasma temperature at the fault
locatian
Wildlife protection Animal contact with Eliminates the contact pathway that
covers and barriers energized conductors or causes phase-to-ground and
equipment phase-ta-phase faults from wildlife
Surge arresters Overvoltage transients Limits peak transient voltage,
causing insulation failure preventing insulation puncture
events that can produce sustained
arcing
CalTrans permitting and switching complexity are the primary scheduling constraints for
this initiative. Locations within state rights-of-way require encroachment permits with lead
times that must be initiated early in the annual planning cycle. Substation getaway
locations require extensive switching coordination and are targeted for execution during
planned substation outages where possible. Seasonal wetland access limitations affect a
subset of lacations and are managed through advance scheduling during dry months.
The Fire Mitigation System Upgrades Pragram provides the engineering framework for
larger-scale, circuit-level capital interventions that ga beyond pole-top retrofits. The
program evaluates each identified high-risk circuit segment and determines the most
appropriate mitigation strategy based an the circuit's risk fiier designatian, ignition pathway
characteristics, and operational constraints.
The 2Q25 pragram year was an initial evaluatian phase. REU focused on understanding
the range of available mitigation strategies, building preliminary decision criteria, and
evaluating options in the cantext of the updated Wildfire Risk Framewark. No large-scale
capital deployments were executed in 2025. Specific target locations, project sequencing,
and annual deployment cammitments are established thraugh the annual work plan in
Part II.
As this program matures, EU is developing an engineering decisian framework to guide
capital investment decisions at the circuit-segment level. Capital upgrades under this
program serve two camplementary purposes. Direct risk elimination includes investments
that physically remove or reduce ignitian pathways regardless af weafiher canditions ar
operational posture, such as covered conductar, targeted undergrounding, and relay and
pratection upgrades. Operatianal enablement includes investments thafi improve the
speed, reliability, and precision of operational risk cantrols during elevated fire weather,
such as SCADA-controlled switching, field reclosers, and seetionalizing improvements
that reduce the customer impact of targeted de-energization. Many investments serve
both purposes.
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REU 2026 Wildfire Mitigation Plan
The mitigation strategies REU is evaluating under this program include relay and
protection upgrades, cavered conductor conversion, targeted underground conversian,
field recloser installation, and SCADA-controlled switching infrastructure. Strategy
selectian for each circuit segment will be driven by Risk Framewark tier designations and
refined through the engineering decision framework currently under development.
6�3 Fir�-R�t�rd�nt Psal� VVrap Prograrn
The Fire-Retardant Intumescent Pole Wrap Pragram protecfis REU's distributian and
transmission infrastructure from wildfire damage regardless of the ignition source. Other
capital pragrams reduce ignition prabability, while pole wrap improves asset survivability
by protecting wood poles from direct flame contact and radiant heat. This protection helps
infrasfiructure remain intact during and after a fire, reduces post-fiire restoration work, and
supports faster service restoratian.
REU uses Stella Jones fire-retardant intumescent wrap material, which activates under
heat exposure to form an insulating char layer that protects the wood pole base from
sustained filame and radiant heat. Wrapping is concentrated on transmissian and
distribution poles in CPUC Tier 2 and Tier 3 areas, with targeted expansion to distribution
pales within a 2QQ-faat buffer into Tier 2 zones adjacent to Tier 3. Poles in low-risk urban
environments such as irrigated lawns, paved surfaces, and maintained landscaping, are
exempt from wrapping requirements.
REU conducts biennial condition inspections of all wrapped poles to identify damage fram
birds, rodents, or mechanical equipment and execute patch repairs or full re-wraps where
needed. GIS Field Maps track each pale's wrap installation date, condition, and
maintenance history.
The 2025 inspectian cycle completed assessment of all 1,374 identified poles, applying
exemption criteria and reducing the target population by 123 poles to a revised total of
1,251 pales requiring wraps.
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REU 2026 Wildfire Mitigation Plan
.
Mitigation programs reduce risk fihraugh sustained field wark and capital investment.
During elevated fire weather, advance situational awareness supparts timely preparation
and a coardinated response. Sectian 7 describes haw REU builds and mainfiains that
situational awareness: the analytical program that converts fire weather data into forward-
laoking operational guidance, the technology infrastructure that supparts real-time
visibility before, during, and after elevated events, and the data-sharing relationships that
extend that awareness to partner agencies.
The Operational Decision Support (ODS) Program is the analytical core of REU's
situatianal awareness capability. It canverts authoritative fire weather data and Risk
Framework outputs into standardized, forward-looking decision-support products that
enable leadership, Operations, and the Emergency Operatians Center (EOC) to
anticipate elevated wildfire risk and prepare before conditions arrive.
ODS is intentianally advisary. Operational actions, system control, and command
authority remain with authorized personnel and established procedures. Its purpose is to
improve the quality, timeliness, and consistency of operational decisions by praviding a
structured, haurly assessment of anticipated fire weather conditions and likely Operating
State implications over a rolling multi-day horizan. ODS enables REU to mave from
reactive response ta proactive readiness, identifying escalation windows and anticipated
firansitions far enaugh in advance for crews, operators, and leadership to prepare.
7.1.1 r s
ODS applies the FPI' and wind-threshold methodalogy defined in Section 4.1.3 to hourly
farecast data and produces a rolling seven-day operational outlook. This section
describes haw the analysis is executed, delivered, and used.
Framework calculations are executed at hourly resolution to capture the diurnal variability
and rapid changes characteristic of fire weather conditians in Redding's geography. The
analysis emphasizes trends, persistence, and convergence to identify the escalation and
de-escalation windows that matter most for operational readiness.
7.1. ecisi n- u r ucts
The ODS Program produces two standardized praducts, as explained in Table 7-1.
Table 7-1. C3DS Decision-Support Products
' .� ' ' • - -• �
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REU 2026 Wildfire Mitigation Plan
Nightly Wildfire Leadership, Every 7-day fire weather forecast
Operational Outlook Operations, EOC morning at includes: National Weather
approximately Service warning when
12:00 am applicable; rolling seven-
day hourly FPI'/wind
outlook; anticipated
Operating State trends;
escalation and de-
escalation windows;
periods requiring
heightened readiness;
forecast uncertainties and
limitations
Real-Time EOC staff, Canfiinuaus Real time, 7-day fire
Operatianal Leadership, IC during weather forecast includes
Dashboard elevated updated FPI'; near-term
events forecast trends; current
Operating State; PSPS
status; and current weather
station readings from
REU's available local
weather station network.
The 7-day Nightly Wildfire Operational Oufilook drives next-day and near-term readiness
discussions across Operations, leadership, and emergency management. It provides the
primary input for staffing and resource posture decisions and feeds the 1-to-7-day
advance planning window that PSPS notification requirements depend an. The Real-Time
Dashboard complements the Outloak during active events by maintaining shared
situational awareness across the EOC, leadership, and the Incident Cammander
throughaut an elevated fire weather period by providing hourly updates and current wind
and gust measurements.
7.1.3 u n-in-t e-Lo esi n
ODS is designed so that na analytical output can trigger an aperational action on its own.
Wildfire operational decisions carry consequences for public safety, customer impact, and
regulatary accauntability that require human judgment, real-time field awareness, and
command authority. ODS provides the infarmation authorized decision-makers need to
act.
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REU 2026 Wildfire Mitigation Plan
Ta le 7- . u an-in-t e-L o afe u r s
-. . . . - . .
Advisory-only outputs Advisory-only outputs. ODS praducts suppork decisions by
autharized persannel; operational directian remains with
established command authorities. No C}DS output
canstitutes an operational mandate.
No self-executing Forecast exceedances and modeled indices require review
thresholds and authorization before any Operating State change or
PSPS action.
Explicit authorization All Operating State transitions require explicit authorizafiion
required by a designated individual. Operating State changes
require human review and aufihorization under established
procedures.
Judgment over Human judgment is an intentianal and required component
automation of Operating State determination. Real-time conditions,
field observations, and prafessional assessment always
take precedence.
IC override authority The Incident Commander may disregard ODS-predicted
escalation at any time. IC retains full command authority.
This design protects against autamation bias, preserves accountability with designated
decision-makers, and ensures that operational decisions reflect the full situational picture.
7.1.4 Relationship to Other Programs
ODS sits at the intersection af the Risk Framework and operational executian. The Risk
Framewark defines what constitutes elevated wildfire risk and establishes the threshalds
and escalation logic. ODS executes that framework in real time and delivers its outputs to
fihe people who need them. The T&D System Operational Practices program acts on
those outputs including Operating State declarations, protection configuration changes,
and PSPS decisions are all informed by ODS products but authorized and executed
through T&D Ops. Customer Service & Communications depends on ODS's 72-hour
farecasfi windaw ta meet advance natification requirements for PSPS events.
Phase 1 of ODS is focused exclusively on wildfire and extreme fire weather. The program
is designed as the foundatianal use case for a braader, multi-hazard decision-support
capability that REU plans to develop in the future.
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REU 2026 Wildfire Mitigation Plan
REU maintains a set af standing technology capabilities that support situational
awareness before, during, and after elevated fire weather events. These are the
infrastructure layer that makes operational programs more efFective. Cameras extend
visibility inta areas that crews cannot cantinuausly patral. AVL keeps the DOC informed of
crew positions during fast-moving events. The common radio platform ensures that REU
field staff and fire agency partners can communicate directly. The DOC integrates all of
these inputs into a single operational picture for the Incident Commander and leadership.
These capabilities were established as part of REU's Wildfire Mitigation Program
investment over multiple years. REU continuously evaluates the effectiveness of each
capability and adjusts based on operational experienee. One example of this evaluatian
process: REU implemented an AI fire watch software system in an earlier program cycle
fio pravide automated smoke detection integrated with the camera network. Afiter working
closely with the Redding Fire Department and ather stakeholders, REU determined that
the system was generating mare false alarms than actionable detections, and that the
AlertCalifornia regional camera network, which has expanded significantly in coverage
and quality in recent years, was providing more reliable fiire detection capability withaut
the false-alarm burden. REU discontinued the AI fire watch software in 2025 and now
relies on the regianal netwarks.
Ta le 7-3. ituational areness T chnolo y - a a ilities an erati n 1 se
� s� ' • •- � -�
AlertWest 1 Regionally managed high- Supplemental fire detection and
AlertCalifornia resalution fire detection situational awareness beyond
camera network cameras covering the REU's own camera foatprint.
braader Redding and REU operators and RFD use this
Shasta County area network as part of routine fire
weather manitoring.
Unmanned Aerial Aerial imagery, thermal Available through the Redding
Vehicles (UAVs) detection via FLIR, and Police Department, which
real-time videa streaming maintains UAV capability
to the DOC or command developed under REU's Wildfire
staff Mitigation Pragram. Deployed on
request for emergency
reconnaissance, hot spot
identification, damage
assessment, and past-evenfi
evaluation.
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REU 2026 Wildfire Mitigation Plan
Automatic Vehicle Real-fiime GPS tracking af Crew positioning visibility during
Location (AVL) all REU electric utility patrol and switching operations;
vehicles safety monitoring during elevated
events; dispatcher ability to direct
nearest crew or alert persannel in
at-risk areas.
Motorola radio Comman radio Interoperable field
platform communication platform for communications during elevated
REU field crews, DOC, fire weather events, PSPS
RFD, and RPD command operations, and active fire
stafF response. Shared platform
ensures REU crews and fire
agency personnel can
communicate directly without
firanslation across systems.
Department Centralized command and Integration hub for SCADA,
Operations Center coordination facility at REU OMS, GIS, ODS products,
(DOC) HQ, Avtech Parkway camera feeds, and radio
communications. StafFed during
OS2/OS3 events and PSPS
operations. Supports IC decision-
making, crew caordinafiion, and
partner agency communications
thraughout elevated events.
7. .1 art ent r ti s enter
The Department Operations Center at REU's Avtech Parkway headquarters is the
physical integration point for all of REU's situational awareness technology during
elevated events. The DOC brings together SCADA system monitoring, outage
management system data, GIS mapping, ODS decision-support praducts, live camera
feeds, and radio communications in a single facility staffed by system operatars,
supervisors, and the Incident Commander during OS2 and OS3 conditions.
During a PSPS event, the DOC serves as the coordination hub for switching order
execution, crew deployment, customer service communications, and partner agency
coordination. It also provides the real-time operational picture that feeds the ODS
dashboard and supports IC decision-making throughout fihe event. At Alert Level 3, the
DOC is fully staffed and integrated with the City EOG.
7.2.2 Agency Data Sharing
REU's situational awareness is most efFective when it is shared with the agencies that act
an the same information. REU maintains standing data-sharing relationships with three
City partners:
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REU 2026 Wildfire Mitigation Plan
7. .3 e in Fire e a ent. REU works closely with the Redding Fire Department
during elevated fire weather and active wildfire incidents fihrough direct communication,
shared situational awareness, and coardinated use of regional monitoring toals. REU and
RFD both use regional camera netwarks and interoperable radio communications to
support fire weather monitoring, incident awareness, and operational coordination.
7.2.4 Redding Police Department. RPD receives outage and PSPS sfiafius updates to
support public safety coordination during events. RPD also maintains the UAV and UAV
van capability developed under REU's Wildfire Mitigation Program, available for
deployment in support of emergency reconnaissance and damage assessment when
requested.
7. . ity Inf r ti n c n !o y. City IT provides integration support for REU's
technology infrastrueture, including network connectivity, system interoperability, and
coordination on shared platforms.
Data sharing occurs thraugh direct network access, scheduled distribution of ODS
products, and verbal coordinatian during active events. REU's goal is that every partner
ageney with a role in wildfire respanse is operating fram fihe same situatianal picture at
the same time.
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REU 2026 Wildfire Mitigation Plan
. . .
When a wildfire threatens REU's service territory, when a PSPS is necessary, or when an
outage disrupts service, REU's obligation extends beyond the system. Customers depend
an REU far timely informafiian, direct outreach if they have medical needs, and rapid
restoration when it is safe to do so. Section 8 describes the programs and protocols REU
has in place to support customers and the community through those events.
During 2025, REU provided funding suppor� to the Redding Fire Department through the
Council-appraved Wildfire Improved Response Program and plans ta continue that
support in 2026. The partnership strengthens local emergency-response capacity and
supports rapid, effective initial attack when fires threaten REU facilities, electric
infrastructure, customers, or the broader community.
The program also supports coordination with CAL FIRE and Shasta County during wildfire
incidents, access to REU facilities, and response to incidents involving or threatening the
eleetric system. By enhancing local respanse capabilities, the partnership helps reduce
the likelihood that a small ignition will develop into a more consequential wildfire. Program
scope and funding are reviewed through the City's annual budget and Council-approval
processes.
�.2 Alert ��v�l and Ernergency R���e�ns� Frar�e�er�rk
All wildfire emergency operations at REU are conducted within the ICS strucfiure
established by SOP-200, REU's all-hazards Emergency Operations Program. The Alert
Level structure gaverns how REU activates its emergency respanse posture for wildfire-
specific events, and directly drives when customer communications, critical custamer
autreach, and DOC staffing are activated.
Ta le -1. le Level ra e r : il fire vents
� �� - � • '•
0 Normal No wildfire threat Standard operatians; ODS daily
Operations canditions reparting cadence
1 Possible Elevated wildfire risk Neightened monitoring; PSPS prep
Emergency identified; potential begins; RFD coordination initiated;
PSPS within 6+ days key persannel natified; custamer
advance notifications initiated if PSPS
_
likely
2 Very High PSPS appears likely Preparations far a PSPS event are
Likelihood of 72 hours ahead of initiated; affected customers are
event. notified af the likely PSPS event.
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REU 2026 Wildfire Mitigation Plan
an
Emergency
,.._. _.... _ ___.______ ._ ___
3 j Active Active wildfire threat Full ICS activafied; DOC fully sfiaffed;
� Emergency or PSPS event in City E�C integration; Unified
pragress; ICS Command with Cal Fire and/or Shasta
activation warranted County; mutual aid activated
Alert Level escalation is driven by Operating State declarations from the T&D �perational
Practices program. Customer Service cammunications and critical custamer outreach are
activated at Alert Level 1 and scale with each subsequent level. An OS3 declaration
activates full ICS and City EOC integratian. The Incident Commander holds final autharity
over PSPS activation, de-energization decisions, and escalation at Alert Level 2 and
abave.
ICS activation at Alert Level 3 establishes the Incident Commander with sectian chiefs far
Operations, Engineering Planning and Technalogy, Logistics, and Finance and
representatives from other City departments.
Post-fire restoration is the most operationally camplex and financially cansequential
phase of a wildfire emergency. REU follows a six-step restoration process: Declaration
and Assessment; Planning and Prioritizatian; Mobilization; Rebuild Execution; Financial
Documentation and Recovery; and After-Action Review and Closeout.
Restaration prioritization uses a P1 thraugh P4 framework that sequences work to
address the most critical needs first:
Ta 1 . storatio riority ra e r
' . -•. • .
P1 Life Safety Downed conductors, active fire hazards, and life-support
customers.
P2 Critical Hospitals, water treatment facilities, emergency services,
Infrastructure communication nodes, sheriffs, fire, police, key utility
facilities, incident command sites, evacuation centers, and
broadcast stations.
P3 System Stability Redding Power Plant, transmission backbone,
substations, and circuit segments affecting the largest
custamer groups.
P4 General Remaining customer segments sequenced by capacity,
Restoration terrain access, and system configuration to minimize total
affiected customers and autage duratian.
REU maintains a critical material vendor list and labar contracts that can be activated
immediately for major restoration events. For catastrophic events, REU is a member of
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REU 2026 Wildfire Mitigation Plan
the California Utility Emergency Association (CUEA) which supports mutual aid labor
coardination. FEMA/CaIOES financial documentation standards are applied from event
onset for all L.evel 3 activations.
REU's customer notification program for PSPS events and wildfire-related autages
operates on a tiered timeline coordinated with �perating State escalation and ODS
forecast windaws.
Ta le -3. ust er tification Ti eline
. . . .- . . ..-
•-
Advance notice 72 hours before Text, email, autbound call, website update,
anticipated de- social media, press release. All customers
energization in affected Tier 2/3 areas and PSPS-
eligible circuit segments.
Imminent notice 24 hours before de- All channels updated. Direct cantact with
energization commercial customers in scope.
Medical efore any de- Direct personal phone call to all Medical
Baseline / energization Baseline and critical care registered
critical custamer customers. Contact attempts documented.
outreach Escalation to emergency services if a
safety cancern is identified.
Event updates Every 6 hours during Website, sacial media, and direct
an active event communications ta affected custamers.
Call center surge staffing is active.
Restoratian Upon restaration or All channels. Website and outage map
notification estimated restoration updated in real time as circuifis are
update restored.
City Communications manages public messaging, social media, and media releases
during wildfire events to ensure consistent messaging across City deparfiments. REU's
outage website and map are updated in real time throughout events as the authoritative
public source for autage and restaration status.
8.4.1 Medical Baseline and Critical Care Registry
REU maintains a registry of Medical Baseline and critical care cusfiomers who depend on
electric power for life-sustaining equipment. The registry is reviewed and validated
annually to maintain accuracy. Before any planned de-energization, REU makes direct
personal phone contact with every registered customer. If a safety or health concern is
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REU 2026 Wildfire Mitigation Plan
identified during outreach, it is immediately escalated to Customer Service leadership and
caardinated with emergency services as appropriate.
During extended outages, REU coord�nates with City social services and community-
based organizations to support customers who may need additional assistance.
Customer safety issues identified through call center interactions or field reports are
immediately escalated thraugh the Customer Service chain and coordinated with
Operations and Emergency Operations.
REU conducts seasonal wildfiire preparedness outreach before and during fire seasan fio
help customers prepare for potential outages, and take protective actions. Outreach is
caardinated with City Communications and the Redding Fire Department to ensure
consistent messaging across City channels.
Seasonal preparedness activities include wildfire preparedness messaging through
REU's customer communications channels, social media campaigns timed to fire seasan
anset, coardinatian with RFD on community fire peeparedness events, and updates ta
REU's website with PSPS preparedness information and the outage map. REU also
updates communication templates and natification lists annually as part of pre-season
readiness preparation.
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REU 2026 Wildfire Mitigation Plan
a a
Section 3 fully describes REU's portfolio governance structure, including the ownership
hierarchy, program charter architecture, and the roles of the Portfolio Owner, Program
Owners, and Risk Oversight Committee. This sectian describes the compliance and
safety functions that work within that structure to keep the portfolio on track, along with
fihe regulatory abligations that define REU's external accountability framework.
REU's Wildfire Mitigation Plan operates under a defined set of regulatory obligations
established by Califarnia Public Utilities Code 8387 and enforced thraugh the Wildfire
Safety Advisory Baard (WSAB). These obligations set the minimum cadence for plan
updates, external submissions, and independent evaluation.
T le -1. e ul t li tions
�. . . . .. - . �- . .
Annual City Council Every year July (target) Pragram perFarmance results
Presentation drawn from Part II annual
reports, planned improvements,
and public camment oppartunity.
Internal Annual Every year Q1 of the Pragram Owners complete Part
Review following II reports; portfolio-level review
program completed; carrective actians
year logged and tracked.
Biennial External Every 2 Following Full WMP submission to WSAB
Submission years Gity Cauncil fallowing City Council adaption.
adoption The 2026 biennial submission
(2026, fallows City Gauncil adaption
2028...) targeted for August 18, 2026.
Independent Every 4 2026, 2030, A qualified independent
Evaluatian years 2Q34... evaluator assesses WMP
comprehensiveness and
program executian. Findings and
REU response made publicly
available.
The biennial external submissian and the independent evaluation are the primary external
accountability mechanisms. The annual City Cauncil presentation and internal review
cycle are the primary internal accountability mechanisms. All four aperate in coardination.
The internal review produces the Part II annual reports that support both the City Council
presentation and the external submission.
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REU 2026 Wildfire Mitigation Plan
.1.1 lic 1e ener 1 r ers
REU's wildfiire mitigatian pragrams operate under the following CPUC General Orders,
which establish minimum standards for inspection, maintenance, construction, and
aperations:
• - Overhead Electric Line Construction. Governs construction standards,
clearances, and maintenance of overhead lines and equipment. Rule 18
establishes corrective action timelines for conditions that may endanger life or
property, including fire-hazard-specific timelines in CPUC Tier 2 and Tier 3 areas.
This is the primary regulatory basis for REU's P-level defect prioritization system.
• 1 - Underground Electric Supply and Communication Systems. Governs
canstruction, maintenance, and inspection standards fior undergraund facilities.
• 1 - Inspection equirements for Electric Transmission and Distribution
Lines. Defines patrol, detailed, and intrusive inspection types, maximum inspection
intervals, and recard retention requirements. REU's inspection program is
designed to meet or exceed all GO 165 requirements.
Where REU's internal standards are mare stringent than the applicable General Order,
fihe stricter standard governs.
o '
The Compliance Program ensures that the governance machinery keeps running: that
abligatians are tracked, that dacuments are current and contralled, that corrective actions
don't fall through the cracks, and that the portfalio is audit-ready at all times.
Table 9-2. What the Compliance Program Tracks and Enfiorces
. . . �- . .
Reporting cadence Annual City Cauncil presentation, biennial WSAB
obligations submission, and independent evaluation deadlines are
firacked with advance reminders and escalatian if milestone
dates are at risk.
Regulatory changes Changes to applicable CPUC General Orders, WSAB
advisory standards, and statutory requirements are
manitored and flagged to the Portfolio Governance Lead for
assessment and incorporation into program charters as
warranted.
Document control Program charters, annual reports, and supporting technical
dacuments are maintained as system-of-record artifacts
with version control, appraval records, and retention per
REU's document retention policy.
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REU 2026 Wildfire Mitigation Plan
Corrective action aterial issues, including compliance findings, audit
tracking results, and execution gaps, are logged, assigned to
Program Owners, and traeked to closure. Escalation
follaws the path: Program Owner to Program Steering
Cammittee ta Executive Steering Committee to Partfalia
Owner.
Auditability The portfolio is maintained in a state of continuous
auditability. Any program's charter, annual report, and
carrective action history can be produced for regulatory
review, independent evaluation, or public records request
at any point in the program cycle.
The Compliance Program is led by REU's Compliance Officer, who also serves as
Portfolio Governance Lead. This dual role ensures that the person responsible for
regulatory compliance has direct visibility into program execution status and can identify
and escalate gaps before they become findings.
REU's Safety Pragram integrates wildfire mitigation activities into REU's existing safety
management systems. Wildfire mitigation field work such as vegetation management,
inspections, patrol operations, swifiching, and PSPS execution all carry safety risks to
crews that must be managed alongside the fire risk reduction objectives. The Safety
Program ensures that safety expectations are reinfarced during elevated risk periods, that
incidents and near-misses during wildfire mitigation activities are captured and reviewed,
and that safety findings feed back inta governance and continuous impravement.
Portfalio priorities, program scope, and executian methods remain the responsibility of the
designated portfalia and program owners. Management retains responsibility fior directing
work and supervising employees. Safety provides aversight, monitoring, and feedback.
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REU 2026 Wildfire Mitigation Plan
.
The 2Q25 fire season was favorable relative ta histarical narms. REU's 4peratianal
Decision Support program recarded only 5 hours that exceeded conditions for Operating
State 2 and 94 hours that exceeded conditions for Operating State 1 during the season,
placing 2025 at the 8.6th and 33.3rd historical percentiles, respectively. No OS2 or OS3
declarations were required, and in its first year under the formal PSPS governance
framework, REU recorded zero PSPS activat�ans. These milder conditions allowed REU
to validate new pragrams and framewarks under lower-stress conditions, while
recognizing that same elements are best assessed during mare elevated fire weather.
Table 10-0 places the 2025 fire weather season in historical context. While sustained
wind hours at or above 20 mph were elevated (71 st percentile) and gusts at or above 30
mph were near typical (57th percentile), fuel conditions remained favorable enough that
the combination of wind and dry fuels rarely reached the FPI'/wind thresholds that trigger
Operating State escalation. In 2025, significant wind events occurred while fuel moisture
and fire potential remained low enough to keep the system in normal or near-normal
posture for nearly the entire season.
Table 10-0. 2025 Fire Weather Severity Context
' . a , . . .
. �
OS2 Conditions 5 29t" � 71°/o Favorable
_ ---- — - '
---- --
OS1 Conditions 94 I 33rd 67% Favorable
_ _____ _._ ___..
Wind >_20 mph Hours 207 71St 29°/o Elevated wind
— - - -___—
- -- -
Wind >_30 mph Hours 12 70t" 30% Elevated wind �
_.—__ . _.__
Gust >_20 m�h Hours 1,043 � 43rd 57°/o Near typical - -'
Gust >30 mph Hours 268 I 57t" 43% Near t�pical
_._._ —..._ _.. _ _ _ _ _ _
� Gust >_40 mph Hours_..� 61 _ .__.__� 52nd.__.__ 48%_._._ Near t��ical ...._..
Source: REU ODS program analysis of Redding RA WS weather station data, 2005-2025.
The standout outcome for 2025 is the reduction in REU-attributed wildfire ignitions to one,
the lowest on recard and an 89% reduction from the 2Q21 baseline of nine. Equipment-
related wires-down events also decreased, from eight to four. These results reflect the
compounding effect of vegefiation management, inspection, and operational practice
improvements across multiple pragram years.
One outcome indicator warrants attention heading inta 2026: vegetation-caused outages
increased from seven in 2024 to nineteen in 2025. This is under active review across the
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REU 2026 Wildfire Mitigation Plan
vegetation management and inspectian programs and is driving specific corrective
actians and planned improvements.
Table 10-1. Portfolio-Level Outcome Indicators (2021-2025)
. • . . / .
. . -
REU-attributed wildfire 9 4 4 4 1 0
ignitions
Equipment-related wires- 5 7 8 8 4 0
down events
PSPS events activated Not Not Not Not 0 N/A
tracked tracked tracked tracked
P1 defects closed within Nat Not Not Not 100°/a 100%
72 hours tracked tracked tracked firacked
Vegetation-caused Not Not Not 7 19 0
outages (total) tracked tracked tracked
P1 conditions at time of Nat Not Not 286 163 0
inspection tracked tracked tracked
N�TE: Dashes indicate metric was not yet tracked in that program year.
Table 10-2 summarizes each program's status and key results for 2025.
Table 10-2. 2025 Program Performance Summary
' .. . ' -
Wildfire Risk On Track • Year 1 framework development complete
Framework • Six lessons learned; five planned impravements
for 2026
• No majar acfiivating event; elements best
assessed under elevated fire weather will be
evaluated in future seasons.
- - _____ - _
Operational On Track • Mi'd season; no elevated fire weather events
Decision • All efifectiveness indicators rated Effiective ar
Support Partial
• Nightly Outlook delivered on time throughout
season
• 4 planned impravements including all-hazards
expansion
- ___.
Vegetation On Track • All activity targets mefi
Management • 8,6Q2 trees trimmed; 512 acres of fuels treated
• P1 conditions reduced 43% (286 � 163)
71 � Page
REU 2026 Wildfire Mitigation Plan
_.._____._
• Vegetation-caused outages increased 7 � 19
- -- __ ___ - -------- ___.
Asset Inspection On Track • 1,588 defects documented across all P-levels
Program • 1 QQ°fo P1 corrective action on-time closure rate
(42 of 42)
• Ignitions decreased from 4 (2024) to 1 (2025)
• Wires-down decreased firam 8 ta 4
.__...._ __.__ _ ___._ _ ___ __ _ _.._._ .. . ____ ____ _____ _______._.
T&D Operational On Track • �irsfi full seasan under OSO—OS3 framewark
Practices • Standing switch log validated pre-season
• No 052/OS3 events; no PSPS activations
• Annual wildfire EOPS training eompleted
September 2025
- __- __
System Partial • 94 af 127 target locatians completed
Nardening • 33 locations carried into 2026
• No ignitions at previously hardened locations
_ _ . _ _.... __. ___. ._... .. _ __ ._.. _ ._ .__....__ _._.__.. __._ _.
Fire Mitigatian Planning • �025 was the evaluation and framework
System development phase
Upgrades • Engineering decision framework conceptualized
• No large-scale capital deployments executed
• 2026: continue refinement once updated Risk
Framework is in place.
- _
Fire-Retardant On Track • 370 new installations, exceeding the 25Q-pole
Pole Wrap target by 120
• All 1,374 poles inspected; 123 reclassified as
exempt, 1,151 af 1,251 total eligible poles
wrapped cumulative
- ___
Customer On Track • No PSPS events; no wildfire-related emergency
Service & activations
Communications • Medical Baseline and critical care registry
validated
• Notification pracedures and templates confirmed
ready
Emergency On Track • No wildfire emergency activations in 2025
Response & • Pre-season readiness and ICS posture
Recovery maintained
• Annual ICS drill completed September 2Q25
72 � Page
REU 2026 Wildfire Mitigation Plan
1 . .1 x cuti n ar
2025 was the first full year of operation under REU's updated Wildfire Risk Framework.
The program completed initial development and operatianalization of the four-driver
framewark, established tier designations for in-scope overhead assets and circuits, and
implemented nightly reparting and a prototype dashboard through the ODS program. The
framework supported Operating State determinations and situational awareness
discussians thraughout the fire seasan.
1 . . or ce esults
All five leading indicators were met:
• Core tier designations established for all in-scope overhead assets and circuits
• Risk driver rationale documented for all identified higher-risk areas
• Major WMP pragrams are explicitly mapped to one or mare risk drivers through the
risk-driver-to-program traceability framework.
• Key data and process gaps idenfiified and documented with remediation plans
• Annual review and validation of tier designations completed through internal SME
review
No major wildfire events occurred, limiting formal past-event validation. Tabletop
exercises and internal reviews served as the primary validation mechanism.
1 . . sso s L ar n I n I r ve ts
• Trigger logic relied primarily on a single point weather farecast located afi fihe Redding
airport, which may not represent conditions across the full service territory. Expanding
fia a more granular weather forecast praduct shauld be a priority.
• A formal after-event report template, trigger criteria, and retention pracess should be
finalized and implemented for any Red Flag Warning period and any wildfiire-related
Alert Level 1, 2, or 3 event to ensure consistent dacumentation
• The wildfire risk framewark should supplement adopted fire-threat map designations
with mare dynamic, consequence-driven spatial analysis focused on identifying where
utility-caused ignitions could result in the greatest public safety, community, and
system impacts. By using bath adopted fire-threat maps and consequence-based
analysis, REU can better prioritize actions that reduce the risk and cansequences of
utility-caused ignitions while also protecting utility assets and maintaining system
resilience against wildfires originating from any source.
• REU's 2025 review confirmed that improved outage, ignition, and raot-cause data will
strengthen future wildfire risk analysis. While existing data provides useful directional
insight, REU identified apportunities fia improve consistency, completeness, and
repeatability in how outage causes and wildfire-related event data are captured and
reviewed. Improving this data will support more reliable trend analysis, better risk-
driver validation, and more informed priaritization af future mitigation work.
73 � Page
REU 2026 Wildfire Mitigation Plan
1 .3.1 xec ti n r
The ODS program provided nightly Wildfire Operational Outlook reports throughout fire
seasan and mainfiained the real-time operational dashbaard. No elevated fire weather
events occurred in 2025, sa the program operated primarily in steady-state readiness
mode.
10.3.2 Performance Results
All effeetiveness indicatars were rated Effective or Partial:
• Nightly Wildfire Operational Outloak distributed on time throughout the season
• Advance identification of elevated wildfire risk conditions: Effective
• Clarity and usefulness of Operating State anticipation: Effective, with positive
feedback from Operations, leadership, and E�C
• Forecast-to-observed alignment: Partial because the mild season limited meaningful
validation
10.3.3 Lessons L.earned and Planned Improvements
• Plan to develop the ODS system an REU's intranet for citywide access.
• Expand to an all-hazards decision support scope to build year-round emergency
preparedness culture beyond fire seasan.
• Add spatial awareness capability to support geographically diffierentiated risk
assessment within the service territory.
• Update execution logic to incorporate anticipated Wildfire Risk Framewark changes
once finalized.
1 . .1 x cuti n u ar
The Vegetation Management Program executed all planned inspection, line clearance,
pole base clearance, and targeted fiuels reduction activities. The program also continued
a strategic transition from fixed trim cycles toward condition- and trend-based planning,
incarporating GIS-based dashboards into daily operations far the firsfi time.
1 . . r e s Its
All activity targets were met:
• Vegetatian araund Transmission assets: 1 QQ% inspecfied by Ocfiober 15, 2Q25 (prior
to December 31 target)
• Distribution assets: 1 QO°!o inspected by December 20, 2025 (prior to December 31
fiarget)
• Line clearance: all 8,602 identified trees trimmed
• Pole base clearance: 100% completed by May 26 (ahead of June 1 target)
74 � Page
REU 2026 Wildfire Mitigation Plan
• Targeted fuels reduction: 512 acres treated (exceeded 500-acre target)
• P1 conditions at time of inspection decreased from 286 fio 163 (43% reduction)
Vegetation-caused outages increased from 7 in 2024 to 19 in 2025. The increase may
reflect limitations of the fiixed-cycle trim model in high-growth corridors; inspection and
clearance execution remained on schedule. Root cause investigation is underway.
1 . .3 Less s Le rne n I n e I r ve e ts
• Narrow ROW treatments produced rapid regrowth in high-growth corridars. Consider
standardizing expanded treatment widths of 50-80 fieet, including ladder fiuel removal,
for Tier 2 and Tier 3 areas moving forward.
• The transition from cycle-based to condition-based planning is prampting updates to
REU's vegetation management standards, including formal off-cycle trigger
thresholds, such as recurring P2 conditions trending taward P1, so the approach is
consistent and defensible.
• IS dashboard deployment revealed data quality gaps. Data validation rules, required
fields, and supervisor-level review have been added as an in-progress corrective
action.
.
1 . .1 x c ti n ary
The Inspection Program completed patrol, detailed, and intrusive inspection cycles across
REU's distributian system, documented 1,58$ defects across all P-levels, and executed
corrective actions within required G095 Rule 18 timelines.
10.5.2 Performance Results
• Patral inspections: 15,236 of 15,378 target lacations completed
• Detailed inspections: 1,110 completed (exceeded target of 1,080)
• Intrusive inspections: 1,045 of 1,128 targets campleted
• All 1,5$8 defects entered and supervisar-reviewed
• P1 corrective actions: 42 of 42 closed within 72 hours (100%)
• P2 corrective actions: 3 of 3 closed within 6 months (100°/o)
10.5.3 Lessons �earned and Planned Improvements
• Minor variability in preliminary P-level assignments between inspectors was observed.
Formalized early defect alignment reviews ta reinfarce consisfient Rule 18
interpretation are planned.
• Photo documentation standards far certain defect categaries require strengthening.
• Direct system linkage between GIS defect records and the SSP LifeCycle work order
system remains manual. Improving this linkage is a high-priority improvement for
2026.
75 � Page
REU 2026 Wildfire Mitigation Plan
• Ground-based infrared evaluation to identify thermal anomalies is under evaluation as
a near-term enhancement.
1 . .1 x c tion u r
2025 was the first full fire seasan operating under the defined OSO—OS3 framework. The
program validated daily manitaring workflows, OS declaration documentation, control
room logging, and the standing switch lag under lower-stress conditions.
1 . . e r a ce s Its
• Pre-season switching order verification campleted; log faund accurate with minor
updates required
• Operating States 0-3 applied thraughout the seasan without a declared OS2 or OS3
event
• No PSPS events activafied
• Standing switch log approach validated as operationally sound for 2026
• Annual OS2IOS3 drill campleted as a training exercise in September 2025.
10.6.3 Lessons �earned and Planned Improvements
• The annual OS2/OS3 drill was completed as a PSPS training in September 2025. The
training revealed no major gaps. A similar drill using the updated risk framework and
decision support tools should be completed priar to the 2026 fire season.
• The standing switch log requires revision once the updated Wildfire Risk Framewark is
finalized in 2026. Circuits are expected to be reclassified, changing which segments
require elevated pratection configuratians. This is an apen corrective actian pending
framework completion.
• Capital improvements ta reduce switching complexity, including sectionalizing,
automation, or equipment upgrades, should be evaluated as a medium-priority
planned impravement over the next few years.
10.7 ��/�tern hlarcl�ning P'rograrn
1 .7.1 2 xec ti n u a
The System Hardening Program executed pole-tap refirafits, non-expulsion fuses, wildlife
protection cavers, and surge arresters at targeted Tier 2 and Tier 3 locations.
10.7.2 Performance Results
• 94 of 127 target locations completed at a cost af appraximately $285,000
• 33 locations carried into 2026 due fio permitting complexity, substation switching
complexity, and seasonal wetland access constraints
76 � Page
REU 2026 Wildfire Mitigation Plan
• Na equipment-related ignitions recarded at previously hardened locations.
• All locations are cleared af vegetation around the base of the pole.
• 13 equipment-related outages occurred at hardened locatians; most were fuse
operations; none were classified as hardening failures
10.7.3 Lessons �earned and Planned Improvements
• CalTrans-permitted locations require encroachment permits initiated earlier in the
annual planning cycle. Substation getaway locations shauld be scheduled during
planned substation outages.
• Seasonal wetland access must be scheduled during dry manths. Advance scheduling
is naw built into the 2026 work plan.
• Qutage and ignition tracking at hardened assets was limited by internal record-
keeping constraints. Improving this tracking is a high-priority improvement for 2Q26.
10.� Fir� �tli�iga�i�an S�Os�ern lJpgrad�� F'rc�gram
1 . .1 xecuti n u
2Q25 was an evaluation and framewark development phase. The program facused on
building engineering decision criteria, evaluating mitigation strategies in the context of the
updated Wildfire Risk Framework, and preparing for capifial deployment in fiuture cycles.
10.8.2 Performance Results
• Engineering decision framework conceptualized.
• Mitigation strategies evaluated: relay and protection upgrades, covered conductor,
targeted undergrounding, field recloser installation, SCADA-cantrolled switching
• No large-scale capital deployments executed in 2025
1 . .3 irection
The 2026 cycle will refine prioritization criteria and begin identifying specific target
lacations as updated Risk Framework circuit risk classifications are finalized. The
program will begin to transition from planning in 2025 to initial engineering and project
scaping 2026 and 2027.
1 . .1 xec ti n a
The pragram executed new wrap installations, completed a comprehensive inspection of
all identified poles, and refined the eligible population through application of exemption
criteria.
1 . . or ce s Its
• 370 new wraps installed, exceeding fihe 25Q-pale target by 120
• 1,151 of 1,251 eligible pales wrapped cumulative through 2025
77 � Page
REU 2026 Wildfire Mitigation Plan
• All 1,374 identified poles inspected
• 123 poles reclassified as exempt, reducing target population to 1,251
10.9.3 Lessons �earned and Planned Improvements
• Distribution and transmission poles must be separated during material planning due to
structural size differences affecting material quantities. This has been incorporated
into the 2Q26 planning process.
• A biennial inspection and maintenance cycle is being formalized to ensure long-term
wrap integrity across the growing installed population.
10.14 �u���srr��r ��rvi��� �c�rr�rnun�ca�ic�n�, ane! Enn�rgen�y
1 .1 .1 xecuti u
The Gustomer Service & Communications program maintained seasonal preparedness
outreach, validated notification systems and templates, and confirmed Medical Baseline
registry readiness. The Emergency Respanse program maintained ICS readiness posture
throughout fire season.
1 .1 . r ce s Its
• No PSPS events activated; na wildfire-related emergency activations in 2025
• Medical Baseline and critical care registry validated
• Notification systems, templates, and call center readiness confirmed
1 .1 . ri riti s
• Customer impact tracking pracesses should be strengthened to ensure cansistent
documentation of all wildfire-related operational actions, including Red Flag Warning
periods and OS1 events.
• Communicatian templates and notificafiian lists require annual pre-seasan review and
update.
78 � Page
REU 2026 Wildfire Mitigation Plan
This section dacuments REU's planned work and obJectives for the 2026-2028 program
horizon. Goals are organized by portfalio layer and program, consistent with the structure
af Section 10, and are specific and measurable sa that pragress can be verified in the
next annual performance report.
The 2026-2028 work plan pragresses from framework completion and program
readiness, through systemwide integration, to initial capital deployment. Tables 11-1 and
11-2 establish measurable outcames for 2026 and 2027, while Section 11.3 identifies the
2028 planning horizon.
1 `� �1 2426 �oal�
The primary facus of 2026 is completing the Wildfire Risk Framework update before fire
season and ensuring all programs that depend on it are ready to operate under the new
framewark on Day 1 of fire seasan. The secondary facus is maintaining strong execution
across all operational programs and completing the first biennial WSAB submission and
independent evaluatian.
Ta !e 11-1. r ra oals
' �� . . � - • � • � - �
•-
. : . .
Wildfire itigation • Governance performance indicators • August
Partfolio refined and measurable metrics 18, 2026
Governance established for reporting timeliness, (City
corrective action closure, and cross- Council);
program caordination fallowing
• Annual governance calendar formally adoption
tracked with milestane completion (WSAB)
documented across all 11 programs
• 2026 Independent Evaluation completed in
advance af Octaber WSA biennial
submission
• All Part II annual reports campleted in Q1
2026 and presented to City Council on
August 1$, 2Q26
.
_ 79 � Page
REU 2026 Wildfire Mitigation Plan
_.._____._
Wildfire Risk • Updated four-driver framework finalized August 31,
Framework with revised circuit tier designations, 2026, May 1St
updated FPI'/wind thresholds, and thereafter
expanded weather data inputs, with
governance approval completed before fire
season
• Formal affier-event report (AER) template
and requirement established; at least one
AER completed during 2026 fire season
• Wind-speed-versus-outage-frequency
visualization developed and incorporated
into framework documentation
Operatianal • ODS execution logic, thresholds, and Augusfi 31,
Decision Support escalation products updated ta reflect 2026, May 1St
revised Wildfire Risk Framework, with thereafter)
deployment completed before fire season
• Real-time operational dashboard resilience
impraved
. _ . . . .
Vegetation • Root cause analysis for 2025 vegetation- ay 1 (root
Management caused outage increase (7 —> 19) cause +
documented and corrective actions standards);
incorporated into 2026 work plan ongoing
• Expanded treatment widths of 5Q-80 feet
codified as pragram standard in Tier 2 and
Tier 3 areas
• Formal off-cycle trigger thresholds (e.g.,
recurring P2 trending toward P1)
documented and applied to 2026 work
priaritization
• GfS data validation rules fu(ly
implemented; data quality audit completed
--- ---- — __
T&D Operational • Standing switch log revised to reflect August 31,
Practices updated Wildfire Risk Framewark circuit 2026, July 31
tier designations, with Operations thereafter
Supervisor sign-off obtained before fire
season
• Annual OS2/4S3 ICS drill completed
before fire season opens
• Engineering evaluation of capital
improvements to reduce switching
complexity initiafied
. . - . .
80 � Page
REU 2026 Wildfire Mitigation Plan
_.._____._
System ardening • All 33 locations carried over fram 2025. December 31,
• Outage and ignition tracking at hardened �p�g
assets improved fihrough updated record-
keeping process
• Annual target far new hardening locations
set and work plan approved based on
updated Risk Framewark outputs
. ___. __ _.___ ._._.._.. _.___._____ _______ _ ______ ___.__._ _ .._ _.
Fire Mitigation • Engineering deciseon framework refined Q4 2026
System Upgrades using updated Risk Framework circuit risk
classifiications
• Priority target locations identified for
relay/protectian upgrades, covered
conductor, or field recloser installation
• Initial engineering and project scoping
begun on highest-priority identified
locations
Fire-Retardant Pole ' Remaining eligible pales wrapped, bringing qugust 31,
Wrap cumulative total to 1,251 of 1,251 (100% of 2Q26, July 31
the revised target), with CalTrans and thereafter
switching-constrained locations
coordinated in advance
• Biennial wrap inspection and maintenance
cycle formalized in program charter and
scheduled for first execution in 2Q27
. .
Customer Service & ' Customer impact tracking process August 31,
Communications documented and deployed ta establish 2026, July 31
consistent documentation of all wildfire- fihereafter
related operational actions including ed
Flag Warning periods and OS1 events
• Communication templates and notification
lists updated pre-season
• Medical aseline registry reviewed and
validated annually
_..._ __ _...___ .. . __ __ ... ............
Emergency • Annual ICS drill completed befare fire August 31,
Response & season apens, with an after-action review �026, July 31
Recovery documented thereaffier
• PSPS Temporal Roles and
esponsibilities Matrix reviewed and
updated to reflect any changes from the
Risk Framework update
81 � Page
REU 2026 Wildfire Mitigation Plan
The primary focus of 2027 is on integrating the updated Risk Framework outputs into
every pragram that uses risk-based targeting, advancing 4DS to all-hazards capabilifiy,
and transitioning Fire Mitigation System Upgrades from planning to capital execution.
T le 11- . 7 r ra Is
��; i � � i
• �� . . � - i � !-. �
. . .
Wildfire • All program charters updated to reflect Risk Q1 2027 '
' Mitigation Framework integration autcomes ' (charters); '
', Partfolio • Gavernance perfarmance indicator tracking ongoing '
' Governance ' fully operational across all 11 programs ' '
', ' • Biennial WSAB submission follow-up actions ' '
', ' from 2026 IE findings completed and ' '
' ' documented ' '
. -
' Wildfire Risk ' • Supplement adopted fire-threat map Q�. 20�7
' Framework ' designations with dynamic, cansequence- ' '
' ' driven spatial analysis focused on identifying ' '
', ' where utility-caused ignitions could result in ' '
', ' the greatest public safety, community, and ' '
', ' system impacts, with the methodolagy ' '
' documented and approved through ' '
' ' gavernance ' '
' • Updated firamework outputs validated through ' '
' at least one elevated fire weather event or ' '
' ' tabletop exercise with documented after- ' '
' ' action review ' '
' ' • Weather statian evaluation completed; ' '
' ' recommendation on additional stations and ' '
', ' integration into decisian-making pracess ' '
' ' documented ' '
82 � Page_
REU 2026 Wildfire Mitigation Plan
' Operational • ODS Phase 2 all-hazards scope defined and Q4 2027
' Decision charter updated, with year-round decisian
Support support operational covering at minimum one
' ' additional hazard type beyand wildfire '
', ' • Spatial awareness capability added to ODS ' '
', ' products to suppart geographically ' '
' ' differentiated risk assessment within the ' '
' service territory ' '
• � - . - e .
', Vegetation ' • Inspection priorifiization, clearance targets, (�1 2027 '
', Management ' and fuels reduction treatment areas updated ' (integration); '
' to reflect revised circuit tier designatians and ' ongoing '
' ' applied for the full 2027 program cycle '
' ' • Span-level regrowth tracking implemented ' '
', ' using clearance-achieved data to support ' '
' condition-based scheduling
' ' • Vegetation-caused outage trend canfirmed
' declining from 2025 peak ' '
' Asset Inspectian • Photo documentation standards strengthened; (,�2 2027
' Program ' supervisor sampling review formalized
' • Early defect alignment review process ' '
' ' implemented to reduce inter-inspectar P-level ' '
', ' variability ' '
' • Ground-based infrared evaluation feasibility ' '
' ' assessment campleted ' '
' • Inspection sequencing and P-level minimum ' '
' priority flaors updated fio reflect revised circuit ' '
', ' tier designations and applied for the full 2027 ' '
' ' inspection cycle ' '
' ' • Ground-based infrared inspection capability ' '
', ' deployed on a pilot basis in highest-risk Tier 3 ' '
' ' circuits ' '
' T&D Operational • Capital improvements to reduce switching May 1 (drill};
' Practices ' complexity: engineering assessment complete Q3
' with specific recommendations for (assessment)
', ' sectionalizing, automation, or equipment ' '
' ' upgrades ' '
', ' • Annual OS2/OS3 drill completed before the ' '
' ' 2027 fire season as the first drill under the ' '
', ' fully updated Risk Framework ' '
83 � Page
REU 2026 Wildfire Mitigation Plan
. . - . .
', System ' • Updated circuit tier designations used ta ' C�1 2027 '
Hardening ' reprioritize System Hardening candidate '
', ' locations, with a revised annual target and '
' ' approved wark plan ' '
', ' • Outage and ignition tracking at hardened ' '
', ' assets fully operational for 2027 program year ' '
' Fire Mitigatian • Initial capital projects in engineering design or Q4 �p�7
' System construction on highest-priority circuits
', Upgrades identified in 2Q27
' • Field recloser and SCADA switching capital '
' needs assessment completed with specific ' '
' ' locations and cost estimates ' '
' Fire-Retardant • gi�nnial wrap inspection and maintenance Q2 2p27
, Pole Wrap cycle executed across the full installed (inspection);
', ' population condition data documented in GIS Q1 2027
' Field Maps (targeting)
' ' • Updated Risk Framework circuit tier ' '
' ' designations reviewed against current wrap ' '
', ' papulation any additions ar reclassifications ' '
', ' incorporated into 2027 targets ' '
o s
' Customer • Customer impact tracking process fully Ongoing; Q4 '
', Service & operational with consistent documentation 2027 (pilot '
Communications ' confirmed through at least one elevated fire eval) '
', ' weather period or drill ' '
' ' • Enhanced coordination with community-based ' '
' ' organizations piloted for extended outage '
', ' support ' '
' Emergency • Annual ICS drill completed before the 2027 May 1 (pre-
' Response & fire season, incorporating lessons from the fire season)
' Recovery 2026 drill after-action review
' • Post-fire restoration priority framework ' '
' reviewed and updated to reflect any changes ' '
' ' from Risk Framework update ' '
1103 202� P'lar�ning Hc�rizon
2028 marks the transitian ta full capital deplayment under the Fire itigation System
Upgrades program. Specific targets and circuit selection will be established during the
84 � Page
REU 2026 Wildfire Mitigation Plan
2027 planning cycle once Risk Framework integration is complete and engineering
assessments are finalized. No major new deployment beyond System Hardening annual
targets and pole wrap campletion is anticipated before that point.
The 2028 planning horizon goals are:
• First Fire Mitigation System Upgrades capital projects in design on highest-priority
circuits identified through the updated Risk Framework
• Covered conductor construction standards established and initial designs are in
process.
• Field recloser and/or SGADA switching infrastructure capital prajects in engineering ar
construction based on 2027 assessment recommendations
• ODS Phase 2 all-hazards capability fully operational and validated through at least
one non-wildfire hazard event
• System Hardening annual target set based an three years af updated Risk Framework
prioritizatian data
85 � Page
REU 2026 Wildfire Mitigation Plan
.
Section 11 documents REU's specific gaals and measurable autcomes for 2026 through
2028. This section provides a broader view of the maturity trajectory, including where
each program and the partfolio are headed and how three years of work combine ta
strengthen the wildfire mitigation posture.
REU's wildfire mitigation portfolio is in the early stages of a deliberate maturation process:
• Phase 1 - Establishment (2025). Core governance, risk, decision-support, and
program-charter structures were established and validated under a comparafiively
mild fire season.
• ase - I te rati n ( — 7). A common, annually calibrated risk picture is
integrated across program prioritizatian, operating readiness, and portfolia
governance. Data and decision-support workflows function as a coordinated
system rather than as separate program processes.
• ase 3 - a ital e 1 y ent ( an ey n ). Permanent infrastructure
investments increasingly reduce residual wildfire risk and recurring operational
burden, allowing the portfalio to shift from establishment and integration toward
sustained risk reductian and performance optimizatian.
• Lo r o f li e ala ci . Phase 3 is expected to extend across multiple
planning cycles as priority capital prajects move through design, construction, and
aperation. REU anticipates using calendar year 2032 as a long-term planning
checkpoint to evaluate the extent to which these investments have reduced
residual utility wildfire risk. ased on updated risk results and demonstrated
program performance, REU will assess whether the scope and budgets of
enhanced aperatianal programs and customer and community resiliency programs
can be right-sized, reduced, redirected, or repurposed. This review may include
supplemental emergency-response support, wildfire-specific operating practices,
PSPS-related customer support, and other measures intended primarily to manage
the consequences or cammunity impacts of utility wildfire risk. Core safiety,
inspection, vegetation management, emergency-response, customer-notification,
and regulatory obligations will continue to be maintained.
The traJectory reflects a fundamental principle: operational programs manage current risk,
while capital programs reduce future risk. REU will use the 2032 planning checkpoint
described above to evaluate porkfiolio rebalaneing while continuing to pravide safe,
reliable, and financially responsible elec�ric service.
12.2 �rc�gram IV�atcarity 1'raje�fic�r�
86 � Page
REU 2026 Wildfire Mitigation Plan
The table below describes where each major program area is expected to be at the end
af each planning year. These descriptions are directional. Sectian 11 documenfis the
specific near-term targets.
Table 12-1. Program Maturity Trajectory: 2026 Through 2028
. . A , . � , :
Wildfire Risk Updated spatial risk Spatial and weather The framework is
Framework model and tier inputs are validated through
designations are integrated, and repeated use and
established as the outputs rautinely maintained through
cammon basis for govern all risk-based a documented
program program priarities. annual calibration
prioritizafiion. cycle.
Operafiianal Wildfire decision- Operational teams Year-round decision
Decision support logic is routinely use support is
Support aligned with the integrated spatial embedded in REU
updated Risk and multi-hazard operations, with
Framework and autlaoks fior stable warkflows,
supported by readiness and event governance, and
formalized IT eoordinatian. user adoption.
processes.
Vegetation Inspection, Risk tiers and span- Accumulated GIS
Managemenfi treatment, and level condition data history supports
condition triggers routinely drive predictive corridor
are standardized treatment planning and
and linked to sequencing and optimized treatment
updated risk perFormance review. cycles.
priorities.
Assefi Inspecfiian Inspection records, Conditian data � Integrated condition
Program photographs, and supports risk-based monitoring and year-
correcfiive work scheduling and raund scheduling
tracking operate validated use af suppart mature,
under strengthened, enhanced inspection preventive asset
traceable standards. methods in higher- management.
risk areas.
T&D Operating-state Operational controls Infrastructure and
Operational procedures, switch are supported by procedures enable
Practices logs, and annual improved more granular risk
readiness exercises sectionalizing and targeting with
are aligned with automatian planning, reduced manual
updated risk with more consistent switching burden.
classifications. event execution.
87 � Page
REU 2026 Wildfire Mitigation Plan
System Annual targeting is Risk-based Multiple years af
Nardening aligned with updated prioritization and targeted investment
risk tiers and asset-level outage pravide measurable
supported by and ignition tracking evidence of
improved are routine program persistent risk
perFormance practices. reduction.
tracking.
Fire Mitigation A repeatable Priarity prajects A sustained capital
System engineering decisian advance through a delivery program
Upgrades framework guides standardized deploys multiple
selection and pipeline from risk risk-reduction
sequencing af identification through technolagies on
circuit-level design and priority circuits.
mitigation strategies. construction.
Fire-Retardant The target Candition The program
Pale Wrap papulatian and inspectians and operates as a stable,
inspection standards maintenance condition-based
are established, with decisions are asset prafiectian and
complete asset routinely managed maintenance cycle.
records and a farmal through GIS-based
maintenance cycle. records.
Governance & Portfolio Corrective action, Continuous
Compliance governance, calendar tracking, impravement,
independent and program auditability, and
evaluation, reporting are evidence-based
regulatory filing, and consistently applied portfolio oversight
quantitative across all programs. are embedded in
performance routine management
reporting operate practice.
under established
contrals.
REU's three primary portfolio-level lagging indicators, utility-attributed wildfire ignitians,
equipment-related wires-down events, and PSPS activations are used to assess the
portfolio's effectiveness. The 2025 result af one ignition is the strangest lagging indicatar
outcome in REU's recarded history. Sustaining and improving on that result over the next
three years, as the Risk Framework integration and capital programs take effeet, is the
portfolio's primary performance abjective.
REU uses a zero-ignition target as an aspiratianal perFormance obJective. Perfarmance
will be evaluated through year-over-year trends because weather and the inherent risks of
energized infrastructure make absolute guarantees impractical. Each program is
88 � Page
REU 2026 Wildfire Mitigation Plan
expected to contribute measurably to that trend. The 2026 target of zero ignitions reflects
the direction of REU's investment and continuous-improvement efforts.
REU's governance framework was substantially formalized in 2025 with the establishment
af the two-part charter system across all eleven programs. The 2026-2028 gavernance
maturity trajectary includes:
• Campletion of the first full independent evaluation cycle in 2Q26, with all findings
and REU's responses publicly posted
• Refinement of corrective action tracking and closeout processes so fihafi findings
from events, audits, and program reviews are consistently logged and resalved
• Strengthening of formal after-action review requirements for all wildfire-related
events, building a dacumented performance reeord that supports continuous
improvement
• Continued improvement in data collectian and metric standardization aligned with
the CMUA Performance Metrics Template
• Transition from establishment-year baseline tracking to full quantitative
performance metric reporting across all programs by the 2Q27 program year
89 � Page
REU 2026 Wildfire Mitigation Plan
. . . .
.
This section dacuments the public process through which the 2026 WMP is reviewed,
adopted, and made available to the community.
The City of Redding is governed by a council-manager form of government. The Redding
City Council serves as REU's Utility Commission and has direct oversight authority over
the Wildfire Mitigation Plan. The Council meets on the first and third Tuesdays of each
month in open session with opportunity for public comment. All meetings are streamed
live online and archived far public access.
The 2026 WMP is presented to City Council for review and adoption as part of REU's
annual wildfire mitigatian update, with 2026 City Cauncil adoptian targeted for August 18,
2026. City Council adoptian is required before the plan is filed with the Wildfire Safety
Advisory Board.
Following City Council adoption, the 2026 WMP is posted on REU's public website at the
address belaw. The dacument is prepared ta meet digital accessibility standards:
machine-readable text, alt text on all figures, and a hyperlinked table of contents.
embers of the public may request printed capies or provide feedback thraugh the
contact information on the cover page.
California Public Utilities Code Section 8387 requires all publicly awned utilities to obtain
an independent evaluation of their Wildfire Mitigation Plan every faur years. In compliance
with this requirement, REU engaged Dudek to complete the 2026 independent evaluation.
The independent evaluator's findings, along with REU's written response, are publicly
posted on REU's website follawing City Council adoption.
Dudek, serving as the qualified independent evaluator, reviewed Redding Electric Utility's
2026-2029 Wildfire Mitigation Plan to determine whether it satisfies all applicable
statutary requirements, accurately characterizes wildfire risk and risk drivers within REU's
service territory, and identifies mitigation strategies that are appropriately respansive to
fihase risks.
The Independent Evaluator found that EU operates within an elevated wildfire risk
environment due to the combination of local terrain, vegetation, seasonal fire weather
patterns, and overhead electric facilities located in or near high fire hazard areas. The
evaluation concluded that the plan meets all requirements of Public Utilities Code Section
90 � Page
REU 2026 Wildfire Mitigation Plan
8387 and reflects a risk-informed approach to wildfire prevention, operational readiness,
and system resiliency.
The evaluator highlighted key elements of REU's wildfire mitigation framewark, including
its use of fire weather and risk manitaring tools, partnerships with local fire agencies,
�perating State protocals, targeted vegetation management, asset inspection programs,
system hardening initiatives, fire-retardant pole wrapping, and Public Safiety Pawer
Shutoff (PSPS) procedures. The review also noted that REU integrates its PSPS process
within the broader Operating State and situational-awareness framework.
Overall, the Independent Evaluator concluded that REU's 2026-2029 Wildfire Mitigation
Plan is comprehensive and demonstrates a proactive, risk-informed, and operationally
integrated strategy far reducing the likelihoad and consequenees of utility-related wildfire
ignitions.
htt �://�wv�,�it c�fr�ddin , c��r/ c�v�rr�r��r�t/d� ��trr���t�/r�ddir� �I��tri� �tilifi Cir� ��€r �c�
rr�rr��r�ite�/�I���ri� ��f�ty/�vildFir� r�i�rc���i�a� I�r�.��h�
13.4 inf�A� F�ling
The 2026 WMP constitutes REU's biennial comprehensive revisian as required by PUC
8387. Fallowing the City Council adoption described in Section 13.1, REU submits the
biennial comprehensive revision to the WSAB through the OEIS portal by the applicable
deadline.
The table below documents the revisian histary of REU's Wildfire Mitigation Plan.
. � . � . � - . .
1.0 December 1, REU Original document
2020
2.0 December 7, REU 2021 Monitoring & Auditing Annual Report
2021
3.0 ' December 30, ' REU ' 2022 Monitoring & Auditing Annual Report '
' 2022 ' '
4.0 ' December 5, ', REU 2023 Monitoring & Auditing Annual Report
2023
5.0 ' December 15, ' REU , 2024 Monitoring & Auditing Annual Report
' 2024 ' '
91 � Page
REU 2026 Wildfire Mitigation Plan
. i . ' . M - . .
8.0 ', May 1, 2025 ' REU 2025 Wildfiire Mitigation Plan - comprehensive
revision. Versions 6.0 and 7.0 were internal
interim working drafts and were excluded from
external distribution.
9.0 August 18, 2026 REU 2026 Wildfire Mitigation Plan - comprehensive
revision
92 � Page
REU 2026 Wildfire Mitigation Plan
.
.
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Title page for a demonstration REU Fire Weather Farecast showing the report period, Natianal Weather
Service alert status, and a notice that wind speeds and FPl Prime values were increased to simulate
extreme fire weather.
A � Appendix
REU 2026 Wildfire Mitigation Plan
Fore�c�ast Gtp��ratirrg S�ta���es
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2Q26-04-Q911:00:00 Q �perating St�te Q--fJ�artnal A�a�rations
Description: Small table listing forecast operating state changes by date and time, including normal
aperations, elevated fire risk with wind, and extreme fire risk with wind.
A � Appendix
REU 2026 Wildfire Mitigation Plan
�P� Prime Q�ily Avr� � "W"ind
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Description: Seven-day weather outlaok chart showing FPf Prime, wind speed, minimum wind thresholds
for PSPS and Operating State 1, and fire weather severity color bands, with supporting daily weather and
fire-weather index tables.
A � Appendix
REU 2026 Wildfire Mitigation Plan
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Description: Three-panel chart showing forecast temperature and relative humidity, wind and gust speed
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fuels.
A � Appendix
REU 2026 Wildfire Mitigation Plan
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Description:Line chart showing conditions during a simulated PSPS event, including temperature, relative
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exceedance conditions and night patrol hold.
A � Appendix
REU 2026 Wildfire Mitigation Plan
.
�a�hb��rd
The following charts show a detailed operating state tabte showing hourly forecast values for wind,
operating state thresholds, fire weather index values, severity level, exceedance status, operating state,
nighttime status, and lifecycle status. As values change, the lifecycle status changes fram Normal ta Pre-
PSPS, Active, Night hold, or Deescafate.
B � Appendix
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REU 2026 Wildfire Mitigation Plan
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2�2fr04-05:98:�� 17.0 �50:0�. �.763 Nli�tlera[e�- �'�.. 060� Noemal�
:2626-Q4-05�:Q9:U� 17:0 ��50:0 0.775 MotlEr�ke ' 050� Normal
2p26-i14-�51D:pp 17.0 5�.� P.79D 1NrSder`�t�. OSD Normal
2p26-t14-�511:pp 17.p 5�.0 �:6�3 °; t 05D Normal
2R2Fr04-Q512i0� 18:p 3@:1 0:63D OSD Normal
2D2fr[14-05.�13iDD 18.0 28.6� D:646 �€,�:;t� � O50 Normal
2D26-040514:DD 18A 24.8 D:662 �9"����� Q6�� Noemal
3D2fi.D4-05'15:DD 19:0 :23:1 D:694 '��.s.�� 054� Normal
2P26-�4-�5�:16'DU 19.0 15.0 22.5 0.911 OS3 Nprrrk�l
2P2G-p4-P5�17�pp 2p.p :15:4. 21.3 �.945 OSS NprrtWl.
2026-04-P5��18'.pP 19:p :15-0 21.6 0.937 453. Nqrmdl
"FD2bD4-�519:DD 19.0 15.0 2Z.� D:B24 OSl Normal�
2D2&040520:DD 18:0 23:4 D:B67 `;��.,','�- OSP: Normal�
:2�26-04Q5�21fDD 18:0 :24.3 �:667 OSO� Normal
2�2fr0405�22iD� 18.0 26:0 0.650 ��:'�i;ei£ , O5D Noemal
2�2fr04-05 23:�� 17.0 43:1 �:@21 Q60� N�emal�
B � Appendix
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li � • • ' •
REU 2026 Wildfire Mitigation Plan
F�II h��rly f� �����h��r� b���ia5� E����d� r�diti�r�5 ���t�r�ir�th�f�r����t
Laeaf Tlme lX11nd ' 051 MIn 052 Mln W FPI I erky Ex " � Operitlrg Skr6e + 6ark L yelr
2�2Fr04-0718:DD 21:4 5�-0 Q:518" OSO Norrnal
2Q2frQ4-07�19:U0 Z'0:0 S�:Q A:511 450 Normal
2�2CrD4-0724:m0: 20A S�A �D.§�6� 450 Ncrtnal
2�2FrQ4-0721iUD 19!p 50.0 �0.504� 050� Nomt01
2Q2G-pA-0i72ZDD 18:D 5�-U 0:5Q2 054 Norm01
2Q26-p4-0723�D4 S7.D 5�-0 0.499 OSO Norrnal
2�2Fr04-08�D:DD 17;4 5�-0 Q:5D4 OSO Norrnal
2Q2frD4-08'D1:U0 1J:0 5�:0 �.6�8 .� Modeeate '.: 450 Normal
2D2fr04-08 D2:00�. lJ.p 5D:D D.632 ���: k1[�d+�rt�te ����. OSD Nortnal
2D26.U4-0893:00 17:0 50.0 0.638 '��, MUY�eetit� ��. OSD Nortn01
2Q2G-pA-p$p4�DD 17:D 5�-U 0 625 i NiOd@xs'�i' 054 Norm01
2Q26-fl4-08 45�D4 S7.D 5�-0 0 645 ' Mod�Y�kB :. OSO Norrnal
2p2frp4-08 A6:0� SB:p SQ:O D.6�4 MOtl+�rdt� QSD Normal
zoz�.aa.oa o,:o0 18.0 5DA D.636 ModerafC i O&D Normal
2D2fr04-08DB:00�. lB:p 5D:D D.654 �.� TAudCr� '�: OSD Nortnal
2D26-U4-0899:00 19:0 50.0 0.684 : NlotltPBte � OSD Nortnal
zoz�-oa-os io:oo 1g:0 5R:D 0.7p8 i M6dCr`�t� OSD Normal
z�z6-04-0811:p0 �4.0 5�:D p.742 Mod��at� OSD Nortnal
zoz�.oa.�s iz:oo �0:� SQ:O D.767 Mfld�r�t� QSD Normal
2926�D4-0613:OQ Z0:0 5DA�. D.795 �i I�lodaraite 1 O&D Normal
2D26-04-0814:00�. 20.0 5DA �D.BD9 Y"r��c ,�� � Q50 Ngrtn01
2D2ErUA-0$15:00 20:0 41.0 0:625' O50 NOItt131
2pz6-pa-D816:00 21.p 25:5 A:855 "�._t OSD Normal
z�z6-04-08 17:p0 �1.p 24:1 p:969 OSD Nortnal
2p2@-pA-0618:D� 21:0 23:8� 0:67$�� ��"(��� QSO� Nt�Trit�l
2�26-04-0819:00 21:D 25:2�. 0:858�� ��.� 050. NOrrnal
2D26-04-08�20:00�. 20.0 4D.1 �D.627 -:a;..si�.... Q50 Ngrtn01
2D2Er04-08�21:00 19:0 5QA �O:BDQ �����ni� O50 NOrrYt31
2D2�D4-08��:�� 19:R SR:a 0.79� M9dCr�tC 4S0 Mormal
2p26-p4-0823:D� 1g:4 59:0 Q.77g ; Mvderate_ 4S0 Normal
2Q26-D4-09 QUiU� 19:0 SQ:O 0.764 ', MtJqEr�t� Q50 Nprrrldl
2�26-04-09�R1:00 19:6 5DA. 0749 '.. k9GtltY�tC i O50 Norrnal
2D2frQ4-09 D2:00 19.0 5D.� Q.73U ' MOtl�Y�t� O50 Ngrrnal
2D26-G4-09�3:00 19:0 SD:G 0.712 : Mbd�r�tc OSO Normal
ZDz�D4-09 D4:pp Sg:R SR:a 0.7p2 ', MtideYa�fe i 4S0 Mormal
z�z6-04-0995:R� 1g:4 59:0 Q.694 , Mod9�rate_ QS0 Nortnal
2p2frD4-0946:6D �6:6 50.0 0.69E Mod�rtit� O50 Nomaal
2p26Q4-09 D7:Q0 za�o 5D.a 0.695 ' Metltr�t� OSO Norrnal
2D26G4-09 D8:66 26.6 5D.� Q.694 ' MCdCYafe O50 Ngrrnal
2D26-G4-09 D9i06 21:0 SD:G OSO Normel
2Q2frQ4-09�1U:U0 Z'2�:0 S�:Q 450 Normal
2�2CrD4-0911:m0: 22:U 5�:0 450 Ncrtnal
B � Appendix
(�►TIC,� �F XEMPTI N
TO: 0 Office of Planning and Research FR+I�M: Gity of Redding
1404 Tenth Street,�oom 121 Public Wocks I�epartment
Sacramento, GA 95814 777 Cypress Avenue
iZedding,CA 96001
� Shasta County Clerk
Cacrnty af Shasta
P.C)• Bc�x 990880, 1643 Market Street
Redding,CA 96099-�8$d
Project Title; Wildfire Miti�;ation�'lan Update
Project Lc�cation—Specific. City of Reddin�
Fro;�ect Location—City; Redding Pro,�ect Location—County: Shasta
Description of Pro,�ect: The Reddin�;Elect��ic Utiliiv is updati»g the Wildfire Miti�;ation Flan U�sdate in campliance with
California Senate Bill�41 and California Public Utilities Code Seetion 8387(bZ2)and Section 8387(cL
Name af]Public Agerecy ApprovingProject: Citv of Redding
Name af Person or Agency C�rrying l�ut Project.Nathan Aronson, Electric Prr� ra� m Sut�ervisor
Exempt Statacs; (check ane)
CI Ministerial [Section 21U80(b)(1); 15268]
❑ Declared Emergency [Section 21�80{b)(3); 15269(a)]
❑ Emergency Project[Section 21080(b)(4); 15269(b)]
C� Statutory Exemptit�ns. State cade number:
� �ommon Sense Exemption{This project does not fall within an exempt class,but it can be seen with certainty that there is
na passibility that th�activity may have a significant effect on the environment(14 CGR 15061[b�[3]).
❑ Categorical Exemption. State type and section nuimber:
C! No exceptions apply that would bar the use af a categorical exernption(�'RD�1084 and 14 CCR 1530Q:2},
Reasans why praject rs exernptr CEQA ap�lies onl t�o prajects whieh have tl�e patential for causin�a si�nificant effect
on the enviranment. Tl�e project has been reviewed and it can be seen with certaintv that there is no possibility that the
activit�may have a si�nificant effect on the environment� therefare the activity is not subject to CEQA.
Lead Agency Contact Person: Am6er Kellev T�l�phone. 530.225.404b
If Filed by Ap�licant:
l. Attach certified document of exemption finding.
2. Has a notice of exeinption been filed by the public agency approving the project? ❑ Yes a No
aa�� �
. �.��
� e ��.,���.��..�,��°�.�..���''��,��' Date. ��"t���`�C�7� �
Signatar ;
TitEe. Environmental Compliance a'na er
�'
0 5igned by Lead A�ency Date received for filin;at OPR:
❑ Signed by Applicant
�.���.�1 �wiiJ:'� r�:�- 6 '�1"'w'