HomeMy WebLinkAboutResolution - 4557 - Contract - TTU ESL - Mensuration Of Permanet Waterbodies. Best Scan Possible. - 07_28_1994Resolution No. 4557
Item #.18
July 28, 1994
RESOLUTION
BE IT RESOLVED BY THE CITY COUNCIL OF THE CITY OF LUBBOCK:
THAT the Mayor of the City of Lubbock BE and is hereby authorized and directed to
execute for and on behalf of the City of Lubbock a Contract and all related documents by and
between the City of Lubbock and Texas Tech University, Environmental Science Laboratory,
for a proposal for mensuration of permanent waterbodies in Lubbock's playa basins and
characterization of basin sediments, which contract is attached hereto, which shall be spread
upon the minutes of the Council and as spread upon the minutes of this Council shall
constitute and be a part of this Resolution as if fully copied herein in detail.
Passed by the City Council this 28th day of July 1994.
ATTEST:
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Betty M. ohnson, CiqV Secretary
APPROVED AS TO CONTENT:
Blas Gomez, Senior Civil Engineer
AS TO
City Attorney
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July 19, 1994
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Item #18
July 28, 1994
Page of 1 of 3
THE STATE OF TEXAS
COUNTY OF LUBBOCK
THIS CONTRACT AND AGREEMENT is entered into by and between the parties shown below
as Contracting Parties.
I. CONTRACTING PARTIES:
Performing Party: Texas Tech University, Environmental Science Laboratory, T.R.
Mollhagen, Director, and D.B. Thompson
Receiving Party: City of Lubbock, Blas Gomez, P.O. Box 2000, Lubbock, TX 79457
II. STATEMENT OF SERVICES TO BE PERFORMED:
A. The Performing Party shall: (1) analyze sediment samples collected from 11 playa basins
(see attached proposal) in the City of Lubbock and (2) determine subsurface contours on
the same basins. The purpose of the sediment testing is to determine the nutrient and
metal burden of the sediments. The purpose of mapping subsurface contours is to permit
estimation of sediments to be removed to increase water storage capacity.
B. Sediment analysis will consist of: (1) collecting, preserving, and delivering samples to
the Environmental Science Laboratory; (2) testing of samples of specified analytes (see
attached proposal) by EPA, ASTM, or APHA approved or validated methods; and (3)
reporting of the results of testing to the Receiving Party.
C. Contour mapping will consist of measuring water depths on transects and converting data
to maps.
III. BASES FOR CALCULATING REIMBURSABLE COSTS:
A. Aalytes Requested: Seventeen analytes are requested (see attached proposal).
B. Cost Per Sample: $335.00
C. Number of Samples: Not to exceed 11 samples.
D. Personnel (excl. that for laboratory testing): Labor, $4,100.00; Benefits, $738.00;
Management, $1,800.00
E. Supplies: $165.00
F. Indirect Costs to University: $1,573.00
I V . CONTRACT AMOUNT:
The total amount of this Contract shall not exceed Twelve thousand sixty one dollars
($12,061.00).
Page 2 of 3
V . PAYMENT FOR SERVICE
A. The Receiving Party will be billed by the Performing Party within 10 days of the
completion of work, as defined in II-B above.
B . The Receiving Party shall pay the Performing Party within thirty days of each billing.
Payment shall be made to 'Texas Tech University Acct. (account number to be
provided)" at the address of the Performing Party below.
VI. TERM OF CONTRACT:
This contract is to begin on date of execution and terminate 135 calendar days later.
VII. TERMINATION:
A. Each of the parties of this Contract understand and agree that if either party hereto feels in
its judgement that the Contract cannot be successfully continued and desires to terminate
this contract, they may do so. In such event the party desiring to terminate shall notify
the other party, in writing, by certified mail or personal delivery, to its principal office, of
its intention to terminate the contract and thirty days thereafter, this contract shall
terminate. The principal office of the Performing Party is Office of Research Services,
Rm. 203 Holden Hall (Akron and Broadway Streets), Texas Tech University, P.O. Box
41035, Lubbock, TX, 79409; the principal office of the Receiving Party is Blas Gomez,
P.O. Box 2000, Lubbock, TX, 79457.
B . Upon notice of termination of the Contract by either party, the Performing Party shall
immediately stop work under the contract. Within thirty days of the effective date of
termination the Performing Party shall provide the Receiving Party any and all
undelivered results of testing along with a claim for unreimbursed testing. The Receiving
Party shall reimburse the Performing Party for the unreimbursed testing.
VIII. ADDITIONAL PROVISIONS:
A. The parties hereto shall each indemnify, defend, and hold harmless the other party against
any and all claims, demands, actions, and causes of action, whether groundless or not, in
connection with any and all injuries, losses, damages or liability of any kind whatsoever
arising, directly or indirectly, out of their own activities performed under this agreement.
Page 3 of 3
The agreement is executed in duplicate and each copy hereof shall be considered an original copy
for all purposes. The undersigned parties bind themselves to the faithful performance of this
contract.
PERFORMING PARTY
D.B. psong,A s Professor
De nt of Civil Engineering
Texas Tech University
P.O. Box 41022
Lubbock, TX 79409-1022
Phone: 806/742-3485
Executive Vice President and Provost
July 18, 1994
Date
Mayor
City of Lubbock
Organization
P.O. Box 2000
Address
Lubbock, Texas 79457
July 28, 1994
r. -
ATTEST:
&'t'
Betty V. Johns n, City Secretary
APPROVED AS TO CONTENT:
BLAS J. GOMEZ, SENIOR CIVIL ENGINEER
APPROVED AS TO FORM:
Proposal for Mensuration of Permanent
Waterbodies in Lubbock's Playa Basins and
Characterization of Basin Sediments
T. Mollhagen D.B. Thompson
June 17, 1994
Duration of project
The project is to begin on execution of contract and end 135 calendar days thereafter.
Objectives
The objectives of the project are to:
1. To survey and map the underwater portions of the urban playa lakes.
2. To collect and composite four sediment samples from the bottom of each of the playa
lakes that are surveyed.
3. To analyze the composite samples which are collected for priority heavy metals, volatile
solids, phosphorous, and nitrogen.
Relevance of the Proposed Study
Results obtained in the proposed study are of significant interest to the City of Lubbock.
Potential results include:
1
Storage capacity as a function of stage: Many playa lakes within Lubbock City Limits
were modified by cut and fill methods during subdivision development. Some have lost
storm -water storage capacity resulting from the influx of sediment into the lake during
storm runoff events. Surveying the bathymetry of these lakes will enable determination
of the extant stage -storage curve for the lake. If stage measurements are available before
and after future storm -runoff events, then amounts of storm -water inflow to the lake
can be determined.
Infiltration through bottom sediments: The stage -storage relation can be used, cou-
pled with evaporation estimates (or measurements), to compute lake -water infiltration
through bottom sediments. These values can be coupled with ground -water flow models
and water -table measurements to monitor impact of playas on ground -water hydrology
of Lubbock.
Rescue operations: The development of bathymetric maps of playa lake bottoms will
assist rescue operations in the event that drowning or other accidents occur in the
playa lakes which can claim human life.
Storm -water management: Data concerning the organic, nutrient, and heavy metal con-
tent of playa sediments will aid evaluation of the past and current status of storm water
pollution from the contributing watershed of the playa and will help the development
of a storm -water pollution management plan. Lake water volume measurements before
and after a storm runoff event can be used to estimate the concentration of pollutants
in storm water if concentrations of pollutants in the playa are known before and after
the event.
Playa storm -water storage maintenance: Data concerning the constituent content and
loading of playa sediments are necessary for planning the disposal or treatment of playa
sediments in the event that the storm -water storage capacity of the playa must be
increased in the future. Furthermore, a baseline assessment of playa storage capacity
is required for determining a schedule for maintaining playa storm -water storage.
Procedure
Four tasks are required: establishment of horizontal and vertical control, bathymetric survey
of the playa bottom, collection and analysis of bottom sediments, and preparation of bathy-
metric maps. Teams of students will execute surveys of the selected playas with permanent
pools.
Survey preparation: A team of students will locate and review City data for location and
elevation of benchmarks in the vicinity of the playa and a copy of the existing maps or
plats of the playas. Each playa wi: be _ yT : = using transects on ten meter intervals
perpendicular to an arbitrary ba_��ine_ B:c �-.ds of each transect will be staked for
use with a tagline stretched between ::eBenchmark data will be used to
establish the water -surface elevatn-a 0:.1_
Field survey: A line tagged at five meter i :tea;:= (tagline) will be stretched across the
lake between staked endpoints de- nir, eacL :en meter transect. A boat equipped
the an electronic sounder will foLJ3w the :ag^.e and the bathymetric trace will be
"marked" at each five -meter tag. Du - F sra verse of the first transect, the sounder
will be calibrated with staff gage mea—-e`- : taken at one tag. At completion of
each transect, the tagline will be =oswi tre next set of staked endpoints and the
procedure will be repeated for all .ram .s_ k final check of sounder calibration will
be executed on the last transect.
Sediment analysis: An Eckman dredge vv: 'r,-- -e+= to collect four sediment samples from
a randomly selected area in the ce-,ial L-r the playa. Not more than one sample
will be collected from each transer. _x w-�1 be composited and analyzed for the
following parameters using EPA metha-' azalysis:
• Total Solids
• Total volatile solids
• Ammonia
• Kjeldahl Nitrogen
• Nitrate
• Nitrite
• Ortho-phosphate
• Total phosphate
• Arsenic
• Barium
• Cadmium
• Chromium
• Copper
• Lead
• Mercury
• Selenium
• Nickel
• Zinc
• Molybdenum
In addition, sufficient materials WIEL beau , _ i to permit determination of grain -size
distributions for playa bottom sedi—men:s-
Data reduction: Sounding data will be con:-er: to input to a computer program for gen-
erating a bathymetric map showing con-o= azd elevations of playa bottom features.
Target Playas
Eleven playas will be surveyed. Some of these lakes are ephemeral and will be surveyed using
standard methods. Lakes to be surveyed are:
Bill Casey Park (South)
K. N. Clapp Park
Bill Miller Park
Jan Jennings
Higinbotham Park
92nd and Chicago
Deliverables
Ribble Park
Leftwich Park
Dupree Park
Buster Long Park
Charlie Guy Park
Products to be delivered include a bathymetric map of each surveyed playa and results of
sediment analyses. Presentation will be in the form of a brief letter report.
Costs
Project costs are shown in the table below.
Labor
$4100
Benefits (18%)
738
Chemical Analyses
3685
Materials
165
Management
1800
10,488
Indirect costs (15%)
$1573
Total cost
$12,061
If the City desires to reduce project duration, an additional three -person crew can be added
for an additional cost of $1239. With the additional crew, the execution time for the study
can be reduced from four months to 10 weeks. The cost is allocated between labor, benefits,
and indirect costs as follows:
Labor $913
Benefits (18%) 164
Indirect costs (15%) 162
Total additional cost 1239