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t' <br /> -13-1996 9:56AM FRGN VERrvMENT-BUILDINGS 209+4683363 p_ 4 <br /> void with clean native soil and/or sand and rock mixture, repair any damage to <br /> existing landscaping. Contractor shall be responsible to repair any damage to <br /> building or sidewalk. Sidewalk specifications attached,landscaping shall <br /> be restored to existing condition. Engineered shoring plans are available. <br /> Contractor shall remove,transport and dispose of tank and any contaminated soil <br /> removed from the void. Contractor shall prepare and submit a Tank Closure <br /> Report to(PHS/EM) and copy San Joaquin County. NOTE: Over excavation of <br /> the tank void will not be performed.Additionally,pea gravel will not be used as a <br /> backfill material. <br /> Two: Obtain a lithological soil profile through direct push point drilling, logging by the <br /> Unified Soil Classification System, in the southwest comer of the tank pit <br /> commencing at a depth of at least 25 feet below grade surface(bgs). Collect soil <br /> samples every 5 feet(or at changes in the lithology),submit samples collected <br /> from approximate depths bgs at 25, 30, 35 and 40 feet.Depth to groundwater is <br /> approximately 42-45 feet bgs. Obtain a"Grab Water"sample through the direct <br /> push point drilling mechanism. <br /> Soil samples will be analyzed as follows: <br /> Total Petroleum Hydrocarbons.Diesel GC-FID(3550) <br /> Detection Limits 1.0 ppm (mg/kg) <br /> One Waste Extraction Test(WET) Title 1-7 CCR. Sec. 66700 <br /> Perform Deionized Water E.crractiou <br /> Water result will be analyzed as follows: <br /> Total Petroleum Hydrocarbons.Diesel GC-FID(3510) <br /> Detection Limits 50.0 ppb(ug/1) <br /> SITE 3: San Joaquin County Courthouse <br /> 222 E. Weber Avenue.Stockton <br /> History: This underground storage tank was used to re-fuel Sheriff's vehicles beginning in <br /> 1975_ Tank is constructed of single wall steel and is 10,000 gallons in size. The <br /> tank is located in a basement level parking lot that provides parking for County <br /> officials, delivery trucks servicing the Courthouse, vehicle inspections and <br /> delivery of inmates for Court appearances. Bidders must be aware that work <br /> requited for removal may be limited to after normal working hours, weekends <br /> 3 <br />