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2 <br /> hydrocarbons as gasoline (TPH-G), and for benzene, toluene, ethylbenzene, and total <br /> xylenes (BTEX) Also in compliance with the request of the California Regional Water <br /> jQuality Control Board (State of California, May 2, 1995) we are including reporting of <br /> methyl-tert-butyl ether (MTBE) (a non metallic antiknock and oxygenating compound <br /> used in gasoline) <br /> In discussions with the San Joaquin County Public Health Services (Personal <br /> Communications, May 10, 1996) it was agreed that due to the reduced detection of <br /> petroleum hydrocarbons at this site that the quarterly monitoring requirements would <br /> be changed to the following <br /> The monitoring requirements for this site are that on an annual basis (the second <br /> quarter), all seven monitoring wells (MW-1 R, MW-2, MW-3, MW-4, MW-5, MW-6, <br /> and MW-7) will be sampled and analyzed for TPH-G, BTEX, and MTBE The first, <br /> third and fourth quarter monitoring wells MW-5, MW-6, and MW-7 will be sampled <br /> and analyzed for TPH-G, BTEX, and MTBE Quarterly depth to water <br /> measurements will be collected from all seven monitoring wells for the <br /> construction of groundwater elevation contour maps <br /> MV1W 194 273%0UIK 132 RPT 1311919 7 1 � � <br />