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l <br /> pm e,7 <br /> I <br /> grown and Caldweii �. r <br /> BG Consultants <br /> aNV1R0NjvIENTAIL HS�`11H <br /> �355tiees Q�RP�14T/S�RVIC�S <br /> aacsamenro <br /> Csl!Wn{a 95814 7092 <br /> {9165 444.0123 <br /> Fax 19161444.8437 <br /> July 11, 1991 <br /> Mr. Chuck Carmel <br /> ARCO Products Company 017-5640-2411 <br /> Post Office Calif rnlia 94402 <br /> San Mateo, California <br /> • Draft Final Remed'sation Flan for ARCO Station 2133, Stockton, ' <br /> Subject• <br /> Dear Mr. Carmel: (Plan) for ARCO Products Company <br /> lan Stockton California• Figure 1 <br /> This report is the Final Groundwater iter,ediati . Hol Drive, follows the autu e <br /> located at 2901 Benj ed so that it basically I guard Staff <br /> (ARCO)Station 2133 (site) Plan is organix A of the T:i-Regiona <br /> shows the location of the site. The Underground Tank Sites. The <br /> the final Remediation Plan section of Appe$ ��o f Services, <br /> presented in Evaluation and Inti jot u County Public Health <br /> Recommendations for Prel �nirary b the San a4 <br /> was required y <br /> preparation of the Plan <br /> Environmental Health Division (County)* site. This remediation consists of a <br /> to the sanitary sewer under a City of <br /> groundwater remediation is underway at this 1992,and will be <br /> Presently. gr stem which discharges directly <br /> groundwater extrartian system a Permit. Iles Permit <br /> eaPhcs on December 31, „section <br /> Stockton Wastewater DThe extra <br /> coon system will be explained in detail in the appreP�� <br /> renewed at that1 <br /> of the Plan. <br /> Hydrog¢ologic Measurements and Predictions groundwater recovery <br /> test was perforn1ed on the g groundwater <br /> August 31,1990,a step-drawdown <br /> pumping well logs, water-level data, and These data <br /> On a 2), In addition, <br /> at the site (Fifes ons of the site were reviewed- <br /> previous <br /> e gVI 'which should <br /> well (R-13) generated during previous investigations Pum <br /> Sam date g analysis that was used Bund beneath the site. <br /> formed the basis for a modeling hydrocarbon plume <br /> be sufficient!o continue to control the bywas created using data collected by <br /> in Data. A water-level databc of the pumping <br /> test in August 1990. <br /> NVater•Level and Pumping eriod Jt nuary 1914 to the nd�A Hydrographs for wells far which <br /> Brown and Caldwell for the p nd. B. The tine between the dates <br /> The analytical data is presented in tabular foe a ed in ppe stem was undergoing <br /> t aced and are p this time,the recovery sy The pump located <br /> data are available were s is 100 days. During the City of Stockton• <br /> shown on the h) comply with regulations imposed by <br /> �;�;�' modifications to camp Y <br />