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fes. <br />!fF' <br /> x <br /> September 1.6, 1991 <br /> ARCO Service Station No. 2076, Lodi, California <br /> 5torkpiled Soil <br /> s, 1Vitlt their ,authorization. we will backfill <br /> Soil excavated from the tank cavities andldQ�``dcct line trenches will be stockpiled onsite the <br /> sampled according to SJCPHS-EH'J guidelines. ]eted. If soil <br /> the farmer tank cavity with stockpilod vapor extraction awhenr�her VES isncompl tile soil.nate <br /> hydrocarbons will be removed by Psoil Nvill <br /> remains after backfilling the former <br /> tank <br /> Class llty, ility. njeedisposal lof the soilof at an isARCO's <br /> disposal facility such as a Class <br /> responsibility. <br /> Report Preparation <br /> A re urt containing information about tiled from the cavity will benk removal Prosprepars and ed by RESVA ale results Of nd <br /> P completed. <br /> laboratory analyses of the samples caltecte <br /> submitted by ARCO to SJCP1iS-END app <br /> roximately 90 da}'s after tile will evaluate whether <br /> On the basis of the on at the site s requirefield d the SJCPHS-EHD <br /> additional investigation <br /> Construction of Vapor-Extraction System <br /> A VES generally consists of vapor- <br /> if <br /> residual hydrocarbons remain in the soil, a IES will be constructed after the vertical and <br /> de <br /> horizocttal extent of hydrocarbons in tiaabatement equipment used to destroy or remove <br /> extraction wells,a blower or vacuum pump, <br /> hydrocarbons from the vapor, and piping and valves connecting the wells and other <br /> y a vacuum is created in the vapor extraction wells which <br /> equipment. During operation, h the soil and into the wells. Gasoline r dhering to soil <br /> induces soil vapor to flow throug or ale soil vapor and `plat lized <br /> particles is volatilized and entrained in the soil vapor. <br /> gasoline are removed from the o the <br /> wells and transported through the subgrade piping <br /> abaten'ent equipment. Gasoline hydrobol sot isthen discharged to i3te ar removed ttmlosphereapar <br /> by the abatement equipment: the treatedP <br /> permits to construct and operate the VES before the system <br /> RESNA will obtain <br /> appropriate <br /> is completely° installed. .� to <br /> RESVA staff e ! wildjustl�heasystemnito P ovider the epeak <br /> ensure that the systesn is functioning properly, <br /> performance, and collect vapor sample] for laboratory analyses to ensure compliance with <br /> permit conditions. ill be <br /> operates will <br /> 'Die Clow rate of vapor from of each 'soil.Ny"I-tie length time d to tl�et ystem op ize the mount o <br /> hydrocarbons being removed from th <br /> s remaining �n the sail. When vapor sample results <br /> depend on the flow rate of vapor. the Vertical and horizontal extent of the hydrocarbons, <br /> and the concentration of hydrocarbons <br /> iv <br /> x 30008-3%V <br />