Laserfiche WebLink
Mr Kyle Christie Project 0805-146 01 <br /> December 16, 1994 <br /> Page 3 <br /> 1'0 <br /> Inc , in Concord, California The results of analyses are summarized in Tables 1 and 2 Copies of the <br />' laboratory analysis reports are presented in Attachment A <br /> Results of analyses indicated dissolved gasoline h drobon were etec <br /> carted in s les from the seven <br />' wells Concentrations of TPHG ranged from 22,000 parts per n ([ppb] well -2) to 92,000 ppb <br /> fq <br /> (well MW-6), and benzene concentrations ranged from ,600 ppb (well -7) to 9,200 ppb-- <br /> ----�well MW-6) 1,2-dichloroethane was detected in wells MW-1, MW-2, and MW-4 through MW-7 at <br /> Iconcentrations ranging from less than 3 3 ppb to 320 ppb, 1, -dichloropropan was detected in wells <br /> MW-2 and MW-5 through MW-7 at concentrations ranging from 4 0 ppb to 25 ppb TOG was not <br />' detected in wells MW-2 and MW-6 (see Table 2) Concentrations of TPHG and benzene are shown on <br /> Figure 2 <br />' WORK IN PROGRESS <br /> ARCO will continue to perform quarterly groundwater monitoring All wells will be analyzed for <br />' TPHG, BTEX, and HVOCs In addition, wells MW-2 and MW-6 will be analyzed for TOG The next <br /> sampling event is scheduled for December 1994 <br /> CONCLUSIONS <br />' The direction of groundwater flow was toward the northeast and consistent with previous data <br /> Dissolved gasoline hydrocarbons were detected in samples from the seven wells HVOCs were <br />' detected in samples from wells MW-1, MW-2, and MW-4 through MW-7 TOG was not detected in <br /> samples collected from wells MW-2 and MW-6 The highest dissolved h drocarbon5 continue to be <br />' detected in the upgradient off-site inonitorin wells <br />' DOCUMENT DISTRIBUTION <br /> We recommend that a copy of this report be forwarded to <br />' Mr Michaellnfuma <br /> San Joaquin Public Health Services <br />' 445 North San Joaquin <br /> Stockton, California 95202 <br /> 1 <br /> SA<_lPlfT ""8051460 IAS-94 PAS 2 <br />