HomeMy WebLinkAboutReso. 1988-096 - Approving an amendment to the proposal to conduct spawning gravel studies for the lake redding power project between the city of redding and ea engineering, science, and technology, inc. . •
RESOLUTION NO. 93- 9,4
9,G
A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF REDDING
APPROVING AN AMENDMENT TO THE PROPOSAL TO CONDUCT SPAWNING
GRAVEL STUDIES FOR THE LAKE R.EDDING POWER PROJECT BETWEEN
THE CITY OF REDDING AND EA ENGINEERING, SCIENCE, AND
TECHNOLOGY, INC. DATED APRIL 24 , 1987 , AND AUTHORIZING THE
CITY MANAGER TO SIGN SAID AMENDMENT.
WHEREAS, by Resolution No. 87-165 adopted by City Council on
May 19 , 1987 , the City of Redding entered into a Contract with EA
Engineering, Science, and Technology, Inc. (EA) entitled
"Proposal to Conduct Spawning Gravel Studies for the Lake Redding
Power Project dated April 24 , 1987" (Contract) ; and
WHEREAS, presented to City Council herewith is an Amendment
to said Contract, a copy of which is attached hereto and
incorporated herein by reference (First Amendment) ; and
WHEREAS , staff has recommended that the attached First
Amendment, listing Tasks 14 through 24 , be approved by City
Council, with the notation that there is no Task 13 in the
original Contract, inasmuch as Task la of said Contract is
commonly referred to as Task 13 ; and
WHEREAS, said First Amendment authorizes the expenditure of
$135 ,316 . 00 , for which funds are included in the 1985 System
Financing; and
WHEREAS , it is believed to be in the best interests of the
City of Redding to enter into said First Amendment;
NOW, THEREFORE, IT IS HEREBY RESOLVED by the City Council of
the City of Redding as follows :
1 . That the City Council of the City of Redding hereby
approves the First Amendment to the Contract with EA Engineering,
Science, and Technology, Inc . attached hereto and incorporated
herein, authorizing the expenditure of $135 ,316 . 00 .
on
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2 . That the City Manager of the City of Redding is hereby
authorized and directed to sign said First Amendment to the
Contract on behalf of the City of Redding, and the City Clerk is
hereby authorized and directed to attest the signature of the
City Manager and to impress the official seal of the City of
Redding on the aforesaid documents, when appropriate.
I HEREBY CERTIFY that the foregoing Resolution was
introduced and read at a regular meeting of the City Council of
the City of Redding on the 1st day of March , 1988 , and was
duly adopted at said meeting by the following vote:
AYES: COUNCIL MEMBERS: Gard, Johannessen , . & Dahl ... :
NOES : COUNCIL MEMBERS : Carter , Fulton
ABSENT: COUNCIL MEMBERS: None
ABSTAIN: COUNCIL MEMBERS: None
''\n �
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MIKE L, Mayor
City of Redding
ATTEST:€
g. _.‘es_sera
ETHEL A. NICHOLS , City Clerk
FORM 'PROVED:
RANpALL A. HAYS, Ci y Attorney
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Contract Ammendment for Lake Redding Spawning
Gravel Studies
The tasks outlined below are designed to meet data requests made
in meetings at Federal Energy Regulatory Commission (FERC) on
December 15, 1987, and February 9, 1988. The specific efforts
outlined below constitute an ammendment to the existing contract
for chinook salmon spawning gravel studies, and are based on the
assumption that there will be no flows >-18,000 cfs in the
Sacramento River between February 1988 and October 1988 when
the information collected in this study is required. No original
Suitability Index data will be collected in the field, other than
incidental information associated with observations of rainbow trout;
and hydraulic information (depths and velocities_ along transects) will
be collected at a single flow following placement of the boards in the
ACID Dam in June, 1988. High flow transect measurements will not
be made and the existing HEC-2 data will form the basis of the stage
discharge relationships to be extrapolated from the CH2M HILL
transects.
Task numbers of this addendum begin with Task 14, following Task
13, the last task in the above referenced contract.
Task 14 - Establish Criteria, SI curves, Map Habitat Types,
and Select Additional Transects for Chinook Salmon Rearing,
and Rainbow Trout/Steelhead Spawning, Incubation,
Rearing, and Adult Holding
This task will consist of a literature survey to determine field
characteristics of each of these habitat types traceable to literature
citations, conversion of this information to mapped polygons on the
USFWS spawning gravel basemaps, determination of 25 new transect
locations on the basemaps and on the ground with agency personnel,
and development of SI curves from FWS, CDFG, and literature values.
(Comparable to Tasks 1 and 3 of the original contract)
Task 15 - Hydraulic Transect Measurements at the
Additional Transects to Include Salmon Rearing, and
Rainbow Trout/Steelhead Spawning, Incubation, Rearing
and Adult Holding Habitat.
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Water surface elevations will be calculated as functions of flow at
each transect using linear interpolation from the existing HEC-2
water" surface elevation model. Measurement -of depths and mean
column velocities will be made at least 20 points (verticals) along
each transect at the same flows used for the salmon spawning
transect measurements in June, 1988. (Comparable to Tasks 6 and 7
of the original contract
Task 16 - Calculation of Habitat Suitability at Each of The
Twenty Five New Transects.
Hydraulic analysis will be done, using the IFG-4 hydraulic simulation
model at each transect to predict mean column velocities as functions
of flow. Suitability Index curves for each of the 5 species/life stages
will be chosen based on literature review. Weighted Usable Area
will be calculated as a function of flow at each transect using the
PHABSIM computer model for existing water surface elevations with
and without the boards at the ACID dam and for new water surface
elevations of 485.25, 487.50, 489.75, and 492.00 feet above mean
sea level at 2,000 cfs flow increments between 2,000 cfs and 20,000
cfs, and at 4,000 cfs flow increments between 20,000 cfs and 60,000
cfs. (Comparable to Tasks 8, 9, and 10 of the original contract)
Task 17 - IFG4 Report Preparation
Preparation of a report that will include time series analysis, as well
as 1)Water surface elevations as functions of flow superimposed on
cross sectional diagrams for each transect , 2) Weighted Usable Area
versus flow for each transect at each flow, 3) Cross sectional bed
elevation plots with overlaid frequencies of measured velocities and
computed Manning's "n" values, 4) Graphic displays of transect-
specific calculated Froude numbers versus stream discharge, 5)
Weighted Usable Area as a function of flow for the project reach for
each life stage and each water surface condition, and 6) Plots of
losses or gains of habitat for the project reach relative to existing
average conditions of flow and dam operation for each of the four
projected water surface elevations (485.25, 487.50, 489.75, and
492.00 feet above mean sea level). (Comparable to Task 12 of the
original contract)
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Task 18 - Direct Observation of Spawning and Other
Activity Using Snorkeling and Viewing from a Boat
The purpose of this task is to determine the general abundance of
Steelhead/Rainbow trout in the project reach and whether or not
they spawn in observable numbers at present . It will be
accomplished by floating the entire study section over a period of
two or three days with a crew of three biologists, inspecting the sites
where the United States Fish and Wildlife Service (FWS) gravel
mapping indicates suitable spawning sites for trout and steelhead,
and inspecting the tributary spawning grounds to determine if any
tributary spawning is taking place. The study will take place during
the period prior to the end of March or April when Hallockl
indicates that steelhead spawning finishes in most tributaries to the
Sacramento River. The tributary spawning areas draining into Lake
Redding will also be checked to determine if trout are spawning in
them concurrently.
Task 19 - Species composition and size distribution using
electro fishing
This task consists of capture of a representative sample of fish to the
verify sizes and species composition determined by the direct
observation above. The amount of this type of sampling that is
necessary is dependent on the density and homogeneity of the
populations within the project reach. The proposed plan is to spend
no more than three days taking a sample of about 200 fish from one
area. The sampling would be done using a boat-mounted
electrofisher. Captured fish will be weighed, measured, and a scale
sample will be taken to determine age.
Task 20 - Interviews with Anglers and Fishing Guides
This task will consist of interviewing local anglers and fishing guides
to estimate the amount of time spent fishing and the relative
importance of Steelhead/Rainbow trout to the recreational fishery.
1 Hallock, R. J. Sacramento River System Salmon and Steelhead Problems and
Enhancement Opportunities: A report to the California Advisory Committee on
Salmon and Steelhead Trout. 92 pages, June 22, 1987
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The interviewing will be done using a prepared questionnaire
intended to find out the amount and timing of usage during the
previous year, and the numbers and sizes of fish caught. The
resulting information will be somewhat anecdotal, but will give an
angler's perspective of the importance of the steelhead/rainbow
trout fishery in the project reach.
Task 21 - Sample Spawning Gravel Mapped by the FWS to
Determine Physical Correlates of Their Visual . Ratings of
Good, Fair, and Poor
Ten core samples of each of the three types of gravel will be
collected randomly from the exposed gravel bed on the left bank of
the Sacramento River between the ACID Dam and the Southern
Pacific Railroad Trestle. The samples will be subjected to size
gradation analysis using gravimetric seiveing. Statistical
comparisons will be made using geometric mean diameters, Fredle
indices, and percent fines.
Task 22 - Revise Feasibility and Sizing Studies Regarding
Downstream Gravel Enhancement Based on Additional
Analysis Done by EA and on Recent FWS Gravel Studies
The purpose of this task is to complete the analysis of the
engineering feasibility of the downstream gravel enhancement
facilities, change the sizing to correspond to the combination of
shifting gravel beds documented by the U. S. Fish and Wildlife
Service, and the habitat suitability studies based on hydraulic
considerations calculated by EA. The remainder of this task consists
of preparing engineering specifications for the proposed spawning
gravel enhancement.
Task 23 - Modify FERC Submittals (but not EIR) to Reflect
Hatchery Withdrawal and New Gravel Mitigation Plan
EA will prepare the analyses and paperwork necessary to alter the
FERC submittals either to withdraw hatchery from the project
mitigation plan, or to convert it to an option, the purpose of which is
strictly project enhancement. This will include documentation both
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of reduced project costs " and supporting documentation for full
project mitigationbased on the gravel enhancements.
Task 24 - Prepare Fisheries aspects of FERC Quarterly
Reports for April 15 and July 15 Quarterly Reports
FERC now requires quarterly reports on all fisheries and other
environmental studies being done in support of the final submittal in
October, 1988. This task consists of preparing the environmental
portions of these two remaining submittals (which consist of progress
reports, data summaries, and draft reports) and making two trips to
FERC in Washington. D. C. to present the results.
Costs
Costs associated with this statement of work are itemized in Table 1,
appended, for a total cost ammendement of $86,911.00.
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CONTRACT AMMENDMENT
To the Contract Accepted and agreed to on 19 May,1988, based on
the RFP dated April 17, 1987, and entitled:
Request for Proposal to
Conduct Professional Service
Regarding the Lake Redding Project for
The City of Redding,
and the proposal submitted, dated 24 April 1987. This ammendment
includes the General Terms and Conditions attached thereto.
ACCEPTED AND AGREED TO THIS day of
1988..
City of Redding EA Engineering, Science, and
Technology, Inc.
760 Parkview Avenue 41A Lafayette Circle
Redding CA 96001 Layfayette, CA 94549
By: By: SLA
City Manager, City of Redding J. Emil Morhardt, Ph. D.
Robert M. Christofferson Vice President
A 1'1 QST:
City Clerk, Redding
FORM APPROVED:
City Attorney
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Table 1, Contract Ammendment, Lake Redding Spawning Gravel Studies
Task Task Name Addendum
No. Authorization
Needed
14 Suitability Index Criteria and Mapping $6,422
15 Hydraulic Measurements $13,028
16 Habitat Suitability Calculation $6,925
1 7 IFG4 Report Preparation $7,156
18 Direct Observation $8,210
19 Electrofishing $4,585
2 0 Interviews with Anglers $4,100
21 Spawning Gravel Sampling $14,955
2 2 Revised Gravel Enhancement $3,980
2 3 Modify FLRC Submittals $8,600
2 4 Two Quarterly Reports, FLRC Meetings $8,950
Total New Authorization Sought $86,911