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_. = ..Associated Soils%Anal sis - w <br /> y _ - <br /> s <br /> x. November 12,1993 <br /> File No. 420-93- <br /> Brian Cobb <br /> - E-Z Serve Management Company <br /> 2550 N.Loop West,Ste.600 - <br /> Houston,TX 77292 <br /> _ <br /> Project: _ E-Z Serve Location#1100966;2537 Waterloo Road, Stockton,CA <br /> Dear Mr.Cobb: <br /> In accordance with your request, quarterly groundwater sampling was conducted at the above <br />' s subject site on September 15,.1993._This quarterly work package includes a site data summary.. _ <br /> table, site groundwater gradient map (FIGURE"1),:laborratory analyses, .-r ionitoring well- i <br /> sampling record, and sampling and purging protocol (ATTACHED). Our field and laboratory. <br /> analyses were conducted in accordance with approved ASTM and EPA standards. <br /> The site wells contained no measurable free product, although water from well MW-1 emitted ✓ _ <br /> petroleum odor. Petroleum constituents were detected in each of the monitoring well samples <br /> yxcept for MW-1,generally at Iower levels than,measuced last quar,er_(ju]y 1993) <br /> Groundwater depths at the!site have increased relative'to last_quarter, indicating that the f <br /> r groundwater table is lower.. . -site groundwater gradient was determined by;calcu sting the <br /> groui:iwater elevation in each well (SUMMARY TABLE) and contouring the elevation data., - <br />_. (FIGURE 1). _-The site groundwater-gradient`currently flows primarily toward the south - <br /> southeast at a magnitude of 0.0014 to 0.0024 foot per foot. This current groundwater gradient is <br /> higher in magnitude than last quart6es gradient, and indicates`6.5hift in flow direction from <br /> the southwest to the southeast. <br /> 4 If you have any questions about these results;plea contact`our office. <br /> Sincerely, <br /> ASSOCIATED SOILS ANALYSIS,INC = fes81py� e _ - <br /> _ ... <br /> V <br /> `Gary J. Cawthon — el _ - <br /> 4µ. - R.G.5574,Exp. 9-30-95 ._ _ - <br /> 'Y <br /> �. <br /> -w GJC:CFL <br /> OF u r <br /> 7 <br /> - - cA <br /> -- 114.1 Batavia Ct. Tulare;California 93274 •: (209)~6.88=1011 <br /> -A,-. ... _ _ <br /> - ..._., T:, Jt. -_'� _ - ,r. !Tq.a.♦ ax^h.T._ -..SCst. `ew - - __ _-F �-,.�. <br />�--v.-ti..� �,v- �� _ _. _ `T.-._�. .•_ -4�Y►'� ._ x — _ Y 'rc��r�1�-.._'�rw�i--..-. -..- -- .7%r <br />