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z Y F Yh yr <br /> 4 <br /> r <br /> iraiyW,id�!'.. NO <br /> rr <br /> i <br /> REI-P91-0202.p1R <br /> March 11, 1991 <br /> Page 3 <br /> zed for <br /> BTX&E (5030/8020) , total lead, <br /> 3. All tank pit bottom and sidewall samples will be analyzed <br /> Tll a gasoline (5030/8015) , san Joaquin Local <br /> and EDS (DHS-AB1803) in accordance with <br /> Health District guidelines. <br /> on-site will be sampled to <br /> �. All excavated soil stockpiledone composite sample will <br /> disposition• Ards of stockpiled soil. <br /> determine appropriate <br /> consist of four individual grab <br /> be collected from each 25 cubic Y to 2 <br /> Each campaken <br /> sample will one sample. <br /> various locations and depths from <br /> samples taken at osited by the laboratory as gasoline and <br /> feet, and will be comp be analyzed for TPH as g and <br /> Composite samples will metal scan, corrosivity <br /> BTX&E, toxicity, reactivity, as determined <br /> All excavated hazardous matewill� be sent to a <br /> ignitability. results, <br /> by composite sample laboratory <br /> disposal site, 2) retained on-site <br /> Class I disp°sal site. All non-hazardous excavated soil will <br /> be: 1} <br /> sent to a class II or 3) sent to a Class IlI <br /> for aerate The <br /> eapd re-sampling: results, and <br /> landfill. <br /> portion of non-hazardous stockpiled soil sen <br /> to each p A permit to aerate will be obtained <br /> des osition will be based on laboratory <br /> volume ConsiderationsGounty Air Pollution control District. <br /> from the San Joaquin owed by <br /> 5, phase I will begin a as soon as this work plan is pp` <br /> San Joaquin county. <br /> PHASE II - GROUND WATER INVESTIGATION <br /> potential ground water contaminati <br /> work p on. <br /> Upon completiill develop a <br /> on of phase I as described above, REI w <br /> P plan to investigate p <br /> plan defining monitor- <br /> round water contamination will be evaluated through e <br /> potential g monitoring wells. The work p submitted to <br /> installation of m ending an approval from <br /> ing well locations and by ni -MaY, details will e <br /> the regulatory agencies by mid-May, 1991, p <br /> San Joaquin County• <br /> pHAs�E III continuing the <br /> phase III will discuss the alternatives for <br /> ation if Phase II reveals contamination levels <br /> subsurface irvestig in excess of <br /> in the ground water significantly wells <br /> Phase III will include a proposal for additional monitoring <br /> it will <br /> to define a zero line of ground Ovate and sample goprogr m forthe <br /> propose a ground -water-mon tIZzng - <br /> wells installed during <br />