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-;L 4� �* � _ y} ,�� -,s .G "' M Z+V r"'"'+w.. 9'. • ,,,,,,,,,,,,,,,,,,.....!!!!!!!!!!!!������������ Fn i u� N' �'Q'.'�. <br />'� V t 4 h N. -.� ! Yi � y1 �. � �N ow. R • a <br /> Mr. Kyle Christie <br /> December 9, 1988 <br /> Pape 8 <br /> Recommendations <br /> An off-site source of coitamination should be investigated. As a start, we recoinmend <br /> sampling the original six wells (PR-1, PR-2, BHD-1, E-5, E-8, and E-9) in November <br /> 1988. Monitoring wells E-10, E-11, and E-12 should also be sampled during the <br /> November 1988, quarterly sampling. Sampling monitoring wells E-10, E-11, and E-12 will <br /> provide a better database for the site. it will allow Brown and Caldwell to crmplete the <br /> western portion of the August 26, 1988, benzene concentration map. Completion of this <br /> benzene concentration map will help to detennine whether or not there is an off•sitL source <br /> of contamination. <br /> Very truly yours, <br /> BROWN AND CALDWELL <br /> Phil ips <br /> Proj c Manager <br /> LEP:PYD:mkw <br /> f.' Enclosure <br /> cc/enc: Ms. Laurie Cotulla, San Joaquin County Heatth Department, Stockton <br /> Ms. Patti De La. O, Brown and Caldwell, Sacramento <br /> Mr. Larry Williams, Municipal Utilities Department, Regional Wastewater Control <br /> Facility, Stockton <br /> BROWN AND CALDWELL <br /> 723 S STREET SAGRAMENTQ CALtFORN1A 4SE7A-70;2.(P%1 4440,*7 <br />