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3500 - Local Oversight Program
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PR0545654
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Last modified
5/7/2020 11:52:04 AM
Creation date
5/7/2020 11:47:22 AM
Metadata
Fields
Template:
EHD - Public
ProgramCode
3500 - Local Oversight Program
File Section
FIELD DOCUMENTS
RECORD_ID
PR0545654
PE
3528
FACILITY_ID
FA0002499
FACILITY_NAME
LINDEN USD-WATERLOO ELEMENTARY
STREET_NUMBER
7007
Direction
N
STREET_NAME
PEZZI
STREET_TYPE
RD
City
STOCKTON
Zip
95215
APN
08906065
CURRENT_STATUS
02
SITE_LOCATION
7007 N PEZZI RD
P_LOCATION
99
P_DISTRICT
004
QC Status
Approved
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EHD - Public
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2. 6 Contract Labo.;tory 4 ] <br /> w <br /> Testing done by: Sequoia Analytical Laboratories <br /> 680 Chesapeake Drive <br /> Redwood City, CA 94063 <br /> DOHS Certification No. 145 <br /> An authorization to release Data Form signed by the Linden <br /> School District is on file with San Joaquin County Public <br /> Health Services. <br /> Y <br /> 3 .0 PROPOSED WORKPLAN <br /> To mitigate the remaining gasoline contamination in soil <br /> WaterWork proposes to re-excavate the former tank pit. <br /> The following scope of work is proposed: <br /> 1. Prior to re-excavation a soil sample will be collected <br /> from the bottom of the pit and analyzed for organic <br /> lead and total soluble lead. These tests are necessary <br /> as the laboratory analyzed the original sample for total <br /> lead instead of organic lead. <br /> 2. Re-excavation of the tank pit to a mu <br /> aximm depth=of'"15; <br /> ee In the north, east and west directions the <br /> excavation will be continued until visual, field and PID <br /> evidence indicate that the hydrocarbon concentrations <br /> have been substantially reduced. Excavation in the <br /> southerly direction is limited by the foundation of the <br /> maintenance building. ; <br /> 3. Collection of two floor and four wall confirmation <br /> samples with the excavator bucket. One sample will be <br /> collected from each wall approximately 1 foot above the a <br /> floor. The samples will be analyzed by Sequoia <br /> Analytical Laboratory, a State certified laboratory, for <br /> A benzene, toluene, ethylbenzene, xylenes (BTEX) and total <br /> petroleum hydrocarbons as gasoline (TPHG) by EPA Methods <br /> 8015 and 8020. <br /> 0,-4,TPHG. <br /> All excavated soil will be stored on 6 mil plastic and <br /> covered with, the- same. One composite sample (4 to 1 ), <br /> will be collected for every 100 cubic yards of soil <br /> removed: The samples will be analyzed for BTEX and <br /> rThe adi terminated --Soil- -will- - be- - aerated on -site <br /> U-rntil gasoline• concentrations are be- <br /> low 100--parts_..- er <br /> - �_ <br /> `million.) {The =aerated -soil will then .be_ spread on the <br /> school property: - •Aeratiori will be performed under a <br /> permit from the San Joaquin County Air Resources Board. <br /> 5. The excavation will be backfilled with pea gravel and <br /> capped with asphalt. <br /> woo- &I <br /> I <br />
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