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IT Corporation <br /> 4003 I m1 01-'Do II]!:Ir" rA <br /> Cont ofd C I 0I i'{1 1120 <br /> 1 Tel 9'i 288 WN8 <br /> 1 a� 9'i 188 11888 <br /> he ` i 11,mb,r„f T h, l I l roup <br /> 1 <br /> rgroup <br /> 1 <br /> June 29, 2000 <br /> 1 Mr Bob DeNinno <br /> 7-Eleven, Inc <br /> ' 10220 S W Greenburg Road, Suite 470 <br /> Portland, OR 97233 <br /> Subject Second Quarter 2000 Monitoring and Sampling Report <br /> ' 7-Eleven Store No 19976 <br /> 1399 North Main Street <br /> Manteca, California <br /> ' IT Project No 779956 <br /> Dear Mr DeNinno <br /> 1 This Second Quarter 2000 Monitoring and Sampling Report presents the results of monitoring and <br /> sampling activities performed by IT Corporation at the subject site (Figures 1 and 2, Attachment 1) on <br /> April 6, 2000 A summary of activities conducted during this reporting period is provided below <br /> • Depth to water (DTW)was gauged in eight site-related groundwater monitoring wells MW-1, <br /> 1 MW-1 A, MW-2, MW-3, MW-4, MW-4A, MW-5 and MW-5A <br /> • Groundwater samples were collected from the eight monitoring wells and submitted to a <br /> California-certified laboratory for analysis of benzene, toluene, ethylbenzene and total xylenes <br /> (BTEX), total petroleum hydrocarbons-as-gasoline (TPH-G), methyl-tert-butyl-ether (MTBE), <br /> tert-butanol (TBA), diisopropyl ether (DIPS), ethyl-tert-butyl ether (ETRE), and tert-amylmethyl <br /> ether(TAME) <br /> Monitoring results are for two depth intervals, shallow (about 30 feet below grade) and deep (about 50 feet <br /> below grade) Shallow wells are designated as MW-1, MW-2, MW-3, MW-4, and MW-5, the deeper wells <br /> are MW-1A, MW-4A, and MW-5A Groundwater elevations are similar in wells screened within both depth <br /> 1 intervals, seasonally fluctuating between about 14 to 17 feet below grade (about 17 - 14 feet above mean <br /> sea level) <br /> 1 <br /> 1 <br />