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IT Corporation <br /> 4005 Port Chicago Highway <br /> Concord, CzI 94520 1120 <br /> I e1 925 288 9898 <br /> &heFax 925 288 0888 <br /> ' CCT s p" <br /> (t;group. ; <br /> fi Rlrmbrr olThe 17 Groaep <br />' October 1,2001 <br /> Mr Bob DeNinno <br /> 7-Eleven, Inc <br /> 3130 S Owyhee Street <br /> Boise, Idaho 83705 <br />' Subject Third Quarter 2001 Monitoring and Sampling Report <br /> 7-Eleven Site No 20632 <br /> 4627 DaVnci Drive <br /> Stockton, California <br /> IT Corporation Project 779962 <br /> 1 Dear Mr DeNlnno <br /> This Third Quarter 2001 Monitoring and Sampling Report presents the results of monitoring and sampling <br /> activities performed by IT Corporation at the subject site (Figures 1 and 2, Attachment 1) on August <br /> 21,2001 <br /> The San Joaquin Co Public Health Services/Environmental Health Department has requested additional <br /> site assessment A workplan for additional site assessment will be submitted in accordance with the <br /> revised deadline (IT Corporation, Inc correspondence September 27, 2001) <br /> A summary of activities conducted during this reporting period is provided below <br /> Depth to water(DTW)was gauged in four site-related groundwater monitoring wells (MW-1, MW- <br /> 2, MW-3, and MW-5) <br /> Groundwater samples were collected from the monitoring wells and submitted to a <br /> California-certified laboratory for analysis of benzene,toluene, ethylbenzene and total xylenes <br /> (BTEX), methyl-tert-butyl-ether(MTBE),tert-butanol (TBA), diisopropyl ether (DIPE), ethyl-tert- <br /> butyl ether(ETRE),tert-amylmethyl ether(TAME), and total petroleum hydrocarbons-as-gasoline <br /> (TPH-G) <br />