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1 <br /> 1444 MARIPOSA ROAD <br /> WKA No 2938 05 <br /> August 26, 1999 <br /> ' Page 12 <br /> SUMMARY OF WELL SURVEY DATA <br /> 0"i g?� , `, AIIl7IOXlinate�1StffiICe bf ' 3 <br /> Well Owners'3 �Gf Location b -No of#� Sci ened Interval orF „ffE ,b a <br /> z a _° >P x > �E i d s !p [ ia` [ �€y' t e ` -aa 44 V47e11(S) <br /> g f p ? a t b`Wells ks Tota Depth"(ft) -�s <br /> `-� r r� of it is t E •a" $ t x t EEE t 4 e RCSpeGt t0 the SUb�ect.S'ite <br /> NA 2118 East Charter 1 NA 500 feet northwest <br /> NA 2150 East Charter 1 NA 500 feet northeast <br /> ' Mormon Slough North of the site surface --- 500 fest north of the site <br /> water <br /> Copies of available Water Well Drillers Reports, State well numbers,boring logs and well <br /> construction details are provided in Appendix E <br /> Soil Borings/Monitoring Wells <br /> On May 24 and 25, 1999, four soil borings B5 and MW4 through MW7 were drilled to depths <br /> ranging from 70 to 100 feet bsg(Plate 2) The soil borings were drilled by V& W Drilling using <br /> a truck-mounted Boart Longyear BK-81 drill ng equipped with 8-inch diameter hollow stem <br /> ' augers Groundwater was encountered in the borings at approximate depths of 47 to 48 feet bsg <br /> Soil boring B5 was drilled in the vicinity of the former exploratory boring B 1 immediately east <br /> of the former UST excavation Borings MW4 and MW5 were drilled along the northwest and <br /> ' southwest corners of the property, respectively, and borings MW6 and MW7 were wells dnlled <br /> along the northeast comer and east side of the property, respectively Soil cuttings were screened <br /> in the field with a photoionization detector(PID) to evaluate potential hydrocarbon content <br /> Rinse water generated during steam cleaning activities was pumped into labeled 5S-gallon drums <br /> tand stored on site Soil cuttings generated during drilling were placed on and covered with <br /> plastic and stockpiled on site <br /> ' Soils encountered beneath the site during drilling activities consists primarily of silty clay, clayey <br /> sand, sandy clay, and fine to medium sand The sands were encountered in the soil borings at <br /> depths ranging from approximately 50 to 70 feet bsg Soil logs of the borings are presented on <br /> Plate Nos 6 through 10 <br /> r <br /> � 1 <br /> %RW <br /> WALLACE KOHL <br /> "led pat— ErASSOCIATES INC <br />