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kru <br /> M <br /> Mr.R. R. Zielinski <br /> 02320 1940 December 11, i991 <br /> Page 2 <br /> The water samples were analyzed using modified EPA methods 503018020/8016, which measure <br /> concentrations of total petroleum hydroCarbons-as-gasoline JTPH-G). and benzene, toluene, <br /> ethvitbenzene and xylenes IBTEX). Copies Of tho laboratory analysis reports and chain-of-custcdy <br /> manifests are presented in Attachment D. <br /> GAC'JNDWATER ANALYTICAL RESULTS <br /> Concentrations of TPH-G in the November 6, 1991 groundwater samples ranged from 1,600 parts per <br /> billion Ippb) to 68,000 ppb; the benzene concentrations ranged from 21 to 24,000 ppb. TPH-G and <br /> benzene concentrations, shown in Figuras 2 and 3 (Attachment A), were generally higher than those <br /> reported the previous quarter. Analytical results for the November 6, 199 1 samples along with results <br /> from the four previous sampling events are presented in Table 2 (Attachment Q. <br /> Please contact Groundwater Technology's West Sacramento Office if Youhave questions Or commonts <br /> regarding this quarterly report, <br /> Sincerely, <br /> GROUNDWATER TECHNOLOGY, INC. <br /> DANISE M. SCRIVEN <br /> Project Geologist <br /> JOHN E. BOWER,R.E.A. <br /> Environmental Geulogist <br /> Project Manager <br /> E. K. SIMONIS, R.G. <br /> Senior Erivironmenial Geologist .4' <br /> No.4422 <br /> DMS/JEC/EKS:rc <br /> Attachments <br /> cc: D. E. Heinrich, Texaco Environ e I <br /> 1940137R.195 <br /> GROUNDWATER <br /> TECH.N01A)GJ'.INc. <br />