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1 <br /> J f l <br /> 10 May 1996 <br /> Pro ect No 95A 4121 <br />` r AGE NC ], n <br /> page 2 of 5 _ <br /> K S <br /> ' 1989 and = ' <br /> 213 SITE ASSESSMENT 1989 by <br /> Loring wells were Installed at the site-between <br /> d's Min <br /> s <br /> s and rune moru were drilled=and same in February'„ <br /> A total often soil baring B.1 hough B-9) <br /> •, Nine sail borings ( les frons seven of the runeborings- he site Total <br /> December 1994 N wells MW-1 through - les collected <br /> I{lelnfelder Hydrocal'bons w d Installed mornt nnS detected in water camp <br /> �,leinfelder drilled andgasoline (TPH-g) were -product was measured w <br /> 1991, uantified as g 1 5 feet of free p , <br /> petroleum hydrocarbons <br /> Ilvtlal sampling event In June 1991, <br /> from each well during I 4 4= <br /> in MW-1 _ wells were Installed at the site (MW' <br /> . was detected In '-4 and <br /> three additional ground , monttorlrlg C) TPH-g <br /> In MaY 1992, b No hydrocarbons were detected <br /> MW-6),VY Artesian EnvlronmEntal Cons" <br /> billion,(pp ) <br /> through , teat as 1 S,4dd parts p . <br /> MW-6 at concentrations as g t <br /> the <br /> in the sample from MW-5 <br /> -7 to MW-g) and one boring were insta Installed,on-site r(s e - <br /> three monitonng wells (M� Drell was <br /> In December`1994, drocarbans werewere detect d in <br /> ` investigation Two wells were Installed off-site`and ane <br /> GAS) PetroleteAed in 4 of <br /> eum hY hydrocarbons cont, I Geos pet, <br /> by <br /> Figure 2) y cal Audit Servs 7 and the boring No p_ <br /> 11 soil samples analyzed from MWS from MW-g or <br /> either soil or ground water same <br /> AND FLOW,DICTION <br /> GROUND WATER DEPTH c , <br /> 2 4 g ted roxirnately 21 feet big to <br /> round water flows In an <br /> water-table surface beneath the site, flur <br /> g to the presence ,- <br /> Depth to the wat between 1991 and 1 <br /> P betw uifer becomes nems-confined due <br /> approximately 33 feet big depth, the aq <br /> aquifer With increasing <br /> unconfined aq = <br /> of heterogeneous layers of sediments urn County Flood Control <br /> blished by the San 3oaq <br /> Depth of Water Wells Fall,1993 peug Zonal rground water flow Is towards the northeast <br /> Lines of Equal p <br /> and Water Conservation District <br /> In <br /> that <br /> NITORIN <br /> o � G PROCEDURES r <br /> 3.0. (QUARTERLY Or , I <br /> MpNITORiNG WELL PURGE PRO, was <br /> 3 1 „ F well was measured to the nearest <br /> depth to ground water in each monitonng <br /> 1996,the dep he relative ground water elevations were ed from a <br /> On 28 Falculated <br /> ebruary round water <br /> water from► the relative ceva ions)elevations <br /> Relative g <br /> q 01 £aot utilizing a Solist waterrounds meter T El ` <br /> by subtracting the depth tog ; <br /> Table 1 -'Relative Ground y�crter <br /> temporary benchmark ( <br />