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S <br /> May 20, 1991 <br /> Quarterly Ground-Water Monitoring AGS 86102-6 <br /> Beacon Station No. 492, Manteca, California <br /> The grouL,u-water samples Fere analyzed for total petroleum hydrocarbons as gasoline <br /> usingEnvironmental Protection Agency (EPA) Methods 5030 and 8015, and <br /> (-I,PHg) using EPA rdethods 5030 <br /> benzene,toluene.ethylbenzene,and to►al xylene isomers(BTEX) <br /> les alyzed at Applied Analytical Environmental Laboratories in <br /> and 602. The samples were an <br /> Hazardous Waste Testing Laboratory No. E773). The results of <br /> Sacramento, California { <br /> these and previous analyses are summaM`d1, MTable andConcentrations were below detection <br /> BTEX in samples collected from wells <br /> limits for the analytical methods used. <br /> week of June <br /> the <br /> The <br /> next <br /> sampling event has been scheduled for <br /> toeM d Lauree Cotulla of9t a San <br /> recommend signed copies of this report be forty Tonal Water Quality <br /> Local Health District. Environmental Health Division, P.O. Box 20 , <br /> Joaquin County s of the California Reg <br /> Stockton,California 95201,and Mr.Gonion l3ogg <br /> trot Board. Central Valley Region, 3443 Routier Road,Sacramento, California 9582 - <br /> Con this report.3098. please call if you have questions regarding p Sincerely, <br /> Applied GeoSysterns, ]rtc. <br /> �D G604 <br /> It.EY 00- <br /> �& /� Richard H. Alden <br /> St f Geologist <br /> N0.4313 <br /> sr�TF OF CAS% Joh:t B.Bobbitt <br /> R.G. 4313 <br /> Attachments: Plate P-1: Site Vicinity Map <br /> Plate P-2: Generalized Site Plan <br /> Table 1: Ground-Water Elevations on five March Analyses <br /> Table 3: cumulative <br /> Results of Laboratory Analyses of Ground-Water <br /> Table 3.C <br /> Samples <br /> Field Procedures <br /> Chain of Custody Record (1 page) <br /> Laboratory Analysis Reports (1 page) <br /> .4 /red Ge'OsysteIns <br /> �� <br />