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I <br /> i <br /> Mr Brian Cobb <br /> April 20, 1995 <br /> Page 2 i <br /> Summary of F ndings ` <br /> Field data collected during the sampling event/mdicate groundwater elevations Ihave increased <br /> I , <br /> significantly relative to last quarter.-Groundwater is flowing to the north and northwest under <br /> an average gradient of 0.004 feet per foot Please note, the groundwater elevation data, <br /> collected from wells MW-2 and MW-7 were not used in the calculating the groundwater` <br /> gradient or flow contours due to apparent erroneous data. Analytical results show an increase <br /> in petroleum hydrocarbon constituent concentrations in Wells MW-1; MW-2, and MW-5, <br /> since last`quarter Free product was not identified inl any of the-monitoring wells A <br /> sum of of the depth-to-water measurements, jcalculated groundwater elevations, and <br /> analytical results are included in Table 1._- A groundwater contour map; identifying the <br /> primary groundwater flow direction on March 24, 1995 and the analytical results, is included <br /> as Figure 1 Field notes, -the chain-of-custody form and the laboratory data sheets are <br /> i included in Attachment A - <br /> .If you have-any question regarding the information presented herein, please contact one of <br /> us at your earliest convenience <br /> Sincerely, <br /> _ BROWN AND CALDWELL J <br /> Y <br /> ti <br /> r f <br /> Todd Miller I f <br /> -Project Manager <br /> ' - I <br /> Pat G. Cullen , <br /> California Registered Geologist-No. 4932 , , <br /> TMIPC:Ikg <br /> Attachments - r <br /> + r <br /> cc` Mr. John Reeves, Attorney at Law ` <br /> Ms. Linda Turkatte, San Joaquin County Public Health Services Department <br /> l f <br /> I <br /> I <br /> 101113/9.%E V.M13651QR�RLYRYIll01067g1lCIi� YV <br /> 1994 pS I I <br /> I I HKAWrID I I' <br /> Brown and Caldwell - <br /> , 1 <br /> Consultants <br /> I <br /> II+I I I IIII II` 4f1II 'Iii I II'll I IIII I�11 II II I'� II I I�� II I <br />