HomeMy WebLinkAbout4.10 HeritgeCtrPrelimEnvSiteAsses
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CITY OF DUBLIN
AGENDA STATEMENT
JI)
Hay '24.c 1993
CITY COUNCIL MEETING DATE:
SUBJECT
Heritage Center Preliminary Environmental
Site Assessment
Report by Diane Lowart, Recreation Director
;!,proposal for sampling, Chemical Testing and
Disposal at Heritage Center
Authorize Staff to direct BSK to proceed with
testing of on-site well water.
The. estimated cost is $3,400 - $4,400.
Sufficient funds are available within the
FY 92-93 Budget.
DESCRIPTION : At the February 8, 1993 meeting of the Dublin
City Council, the Council approved an Agreement with BSK & Associates
to perform a preliminary environmental site assessment at the Heritage
Center. Under the terms of the agreement, BSK was to perform a
non-intrusive investigation including a background investigation,
site review, review of adjoining properties uses, interviews with
people familiar with. the sites history, regulatory review and a review
of the owner's records.. The agreement .did not provide for testing of
soil and/or groundwater samples.
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EXHIBITS ATTACHED
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REalHMEIlDATI~ :
FINANCIAL STATEMENT :
aSK has concluded their preliminary site assessment and has identified
three potential areas where further testing may be warranted. They
are as follows:
1.
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3.
Characterization of site soil with respect to the possible
presence of DOT pesticide.
Sample and teston-site well water for potential use by the city
for drinking and/or irrigation.
Removal and proper disposal of unknown chemicals in the
wellhouse.
Of these tasks, Staff recommends that the City proceed with Task 2,
II sample and test on-site well water". The estimated fee forthis
additional test is $3,400 and will provide for the following:
"includes initial purge by pumping, temporary storage of purged
water in a rental Baker Tank, sampling for: Coliform Bacteria,
General Mineral, Inorganics and General Physical Condition, Total
Petroleum Hydrocarbon as Gasoline and Diesel, Total and
Hydrocarbon Oil and Grease, and Volatile Halocarbons".
If the well water is found to be contaminated, an additional cost of
$500 to $1,000 would be incurred for proper disposal of the water.
As the cost for these additional services exceeds 25% of the original
contract amount, City Council appro"alis required. Therefore, it is
the recommendation of Staff that the City Council approve the
additional work and authorize Staff to direct BSK & Associates to
proceed with testing of on-site well water.
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BSK & Associates
C I TV C L E R K
FILE ,.. ..16( 0 (oH3lo1
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.'1 g1181 Quarry Lane
__ Building 300
. Pleasanton, CA 94566
(510) 462-4000 .
(510) 462-6283 FAX
& Associates
April 22, 1993.
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P1PH 22 1993
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BSK PROPOSAL PR93097.3
City of Dublin
100 Civic Center Plaza
Dublin, CA 94568
Attention: Mr. Mehran Sepehri
Senior Civil Engineer
Subject:
Proposal
Sampling, Chemical Testing and Disposal
Heritage Center
6600 Donlon Way
Dublin, California
Gentlemen:
In response to your request, BSK & Associates has prepared this
Fee Proposal for the testing and removal of materials identified
in Our Preliminary Environmental Site Assessment Report, BSK
Job No. P93011.3, dated March 31, 1993.
The City of Dublin has requested that BSK provide the following
fee estimates for the three tasks described below:
TASK 1:
Characterization of Site Soil with Respect to the
Possible Presence of DDT Pesticide -
Test plan development, soil sampling
(3 samples), analytical testing
(EPA Method 8080) and result evaluation
$1,100
TASK 2:
Sample and Test On-site Well Water for Potential Use by
the City for Drinking and/or Irrigation.
Includes initial purge by pumping, temporary storage of
purged water in a rental Baker Tank, sampling for:
Coliform Bacteria, General Mineral, Inorganics
and General Physical Condition, Total Petroleum
Hydrocarbon as Gasoline and Diesel, Total and
Hydrocarbon oil and Grease, and Volatile
Halocarbons (1 sample each),
and result evaluation and reporting .......... $3,400*
*Includes approximately $900 for pump and tank rental
fees.
Geotechnical Engineering' Engineering Geology' Environmental Services' Construction Inspection & Testing. Analytical Testing
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City of Dublin
Sampling, Chemical Testing & Disposal
Heritage Center
Dublin, California
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BSK Proposal PR9 3 0 9 7 . 3
April 22, 1993
Page 2
The pumping data obtained during well purge would be used to
assess the well yield.
TASK 2a: The cost for disposal of contaminated water, if found,
is dependent upon the type and concentration of
contaminant (s) . An expectable cost may be $500 to
$1,000.
TASK 3: Removal and Proper Disposal of Unknown Chemicals in the
Wellhouse.
This task would be subcontracted by the City to a
company specializing in chemical waste disposal. BSK
received the following cursory estimates from the
companies listed:
Erickson, Incorporated . . . . .
California Advanced Environmental
Technology Corporation . . .
Integrated Waste Management
$1,900
$2,000
$1,700
SUMMARY OF FEES
TASK 1
TASK 2
TASK ).c:t
TASK 3
$1,100
3,400
1,000
2,000
$7,500
TOTAL FEES
As previously stated, BSK would not be directly involved with the
characterization, removal, and disposal of the unknown substances
in the Wellhouse.
The cost of supplemental sampling and remediation of DDT in site
soil, if found, cannot be determined at this time.
BSK appreciates this opportunity to continue to be of service to
you on the Heritage Center project. If there are questions or
concerns regarding this proposal, please contact the undersigned.
AYE/TWB:rpj/hhc
(PRO\ENV.A1S)
Respectfully submitted, \
BSK & Associates
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Alex Y. Eskandari, P.E.
Manager-Geo-Environmental Services
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& Associates