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848 WV. Fremont Street, Stockton <br /> Page 2 <br /> • Apex requested that analysis for total petroleum hydrocarbons as diesel <br /> (TPH-d) and analysis for oxygenates using EPA Method 8260 be suspended <br /> when analyzing groundwater samples from monitoring wells MW1, MW2, <br /> MW3. TPH-d has not been detected in the groundwater form these wells. Of <br /> the oxygenates analyzed for, only MTBE has been detected. Since there are <br /> no,operating underground storage tanks at the site and MTBE can be <br /> analyzed for using EPA Method 8020, PHSIEHD agreed to the request. <br /> If you:6have any questions, please feel free to contact Jeffrey Wong at (209) 468- <br /> 0335. <br /> Donna'Heran, REHS, Director <br /> Environmental Health Division <br /> effre Won EHS, Trainee Mar ar t La orio, REHS <br /> Y 9 g 9 <br /> LOP/Site Mitigation Unit IV Supervisor, <br /> JW:Ib <br /> c: RWQCB, Central Valley Region - Pat Anderson <br /> c: Apex Envirotech, Inc. - Thomas E. Ballard <br /> t <br /> 4 <br /> s <br /> 4 <br /> F <br /> i <br /> i <br />