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� __ a $ <br /> �,a <br /> SEE <br /> xae rss_. kx 4F•n .. -t �' -7a' <br /> w <br /> r <br /> Mitigation Work Plan AGS 86102--2P <br /> Beacon Station #3-492, Manteca, California. May 26, 1987 <br /> If necessary or desirable, these wells can be designed to use <br /> either ambient pressure conditions or a forced air supply. <br /> Ground water monitoring wells MW-1 and MW-2 may also be converted <br /> to air inlet wells if desired. <br /> GROUND WATER WITHDRAWAL <br /> Ground water will be withdrawn from the subsurface and discharged <br /> to the sanitary sewer system: Guidelines for discharge <br /> (withdrawal) rates and any necessary treatment prior to discharge <br /> are not presently <br /> known. Relevant data will be forwarded to the <br /> F <br /> . appropriate agencies in Manteca for their approval prior to <br /> discharge. The water will be withdrawn. through use of a <br /> submersible pump installed in MW-2. If monitoring of the system <br /> indicates thrt additional withdrawal is necessary, a second pump . <br /> will be installed in MW-1 or in additional wells. <br /> Information obtained from the San Joaquin Local Health District <br /> has indicated that the empty lot north of the site was a service <br /> station in the past, and that significant contamination of group-d <br /> - ---- ----- - - ... _:.. <br /> there. In our o inion <br /> - ---- p , ground water <br /> withdrawal at the Beacon site should. proceed only with assurances <br /> 9 <br />