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+ Advanced _ <br /> Ge-oEnvironmental, -Ince = - <br /> 28 August 2006 . <br /> AGE-NC Project No. 98-_0497` _ ►� <br /> Ms. Vicki McCartney AUG 2��b <br /> San Joaquin County Environmental Health Department, <br /> 304 East Weber Avenue, 3`a F_loor NT HEALTH <br /> Stockton, California 95202 . _ PERMIT/SEPVIGES <br /> ce <br /> Subject: Ground Water Batch Removal-Work Ian .0 E <br /> NATIONAL FREIGHT <br /> 2850 Loomis Road,,Stockton, Califo ia'� <br /> Dear Ms..McCartney: <br /> On behalf of Mr.Daniel Folcher,Advanced GeoEnviro : ental';Inc. (AGE)has prepared this work <br /> plan to perform a"batch"removal of ground water fro on-site Well MW-1.' <br /> SCOPE OF WORK <br /> Concentrations of total petroleum hydrocarbons q'uantifi ed as diesel(TPH-d)in ground water•in the <br /> vicinity of well MW-1 have remained high or iricreas d. In order to evaluate the stability of the <br /> dissolved TPH-d in the ground water;capillary zone and smear zone, AGE recommends a limited <br /> batch removal of,ground water: Initially, we recommend a single batch removal event; however, <br /> samples.collected prior-to.and upon completion of the batch removal will be used to evaluate the <br /> necessity for additional extraction events. <br /> PROCEDURES <br /> AGE proposes to perform a batch removal from-well M =I'to evaluate the stability of the dissolved <br /> TPH-d in the ground water, capillary zone.and smear -one.around the well. A three-horsepower <br /> electric air compressor and a submersible,fluid pneumatic extraction pump will continuously extract . <br /> ground water from the well screen interval of MW_I. Ground water will be purged at a rate of <br /> approximately one and one-'half gallons per minute froi TY well MW-I for the duration necessary to <br /> remove 4,000 to 6,000 gallons of water. This will take approximately three to four days. Ground <br /> water will be stored on-site; in a large,poly tank provided by Baker Tanks. At the conclusion of the <br /> ground water batch,removal event, the extracted grou nd water from MW-1 will be transported. . <br /> off--site and properly_disposed of at an EPA-approved_ aste water facility. <br /> 837 Shaw Road, Stockton,C�lifornia 95215 <br /> 'Telephone(209)467-1006 •Fa. (209)467-1118 <br />