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L <br /> 3330Data Drive <br /> ��. Delta Suite 100 <br /> Rancho Cordova,CA 95670 <br /> Environmental 9161638-2085 <br /> Consultants,Inc. FAX:916/638-8385 <br /> December 14, 1992 <br /> Ms. Mary Mays <br /> San Joaquin County Public Health Services s <br /> Environmental Health Division <br /> 445 N. San Joaquin Street DEC 1 7 1992 r <br /> P.O. Box 2009 LVVIRONMENTAL HEALTH <br /> �Stockten, California:.95201 - <br /> YPERMIT/SCRVI ES ti _ <br /> Subject: Quarterly Ground Water Monitoring <br /> 4491 West Durham Ferry Road <br /> Tracy, California <br /> Delta Project No. 40-91-732 <br /> Dear Ms. Mays: <br /> Delta Environmental Consultant,Inc., is proposing that the number of ground water samples collected <br /> during quarterly ground water monitoring visits to the subject site be reduced. During each sampling <br /> event, ground water samples will not be collected from monitoring wells MW-2 and MW-3. A <br /> sample will be'collected from monitoring well MW-1 and submitted to a state-certified laboratory for <br /> analyses of benzene, toluene, ethylbenzene, xylenes, and total petroleum hydrocarbons as gasoline. <br /> Also, depths to water will be measured in MW-1, MW-2 and MW-3. <br /> If you have any,questions or comments regarding this letter, please contact me at (916) 638-2085. <br /> Sincerely, <br /> DELTA ENVIRONMENTAL CONSULTANTS, INC. <br /> James R. Brownell, R.G. <br /> Project Manager <br /> JRB (CL383.TA) <br /> 1 <br /> cc: Ms. Stella Ruiz <br /> Ms. Leah Goldberg, Nuemiller & Beardslee <br /> Delta Detivers Solutions <br />