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f _ + <br /> J - r <br /> t s , <br /> f <br /> 1 2 <br /> r <br /> 10 May`1996 , <br /> r AGE NC Project No 95-0121 , <br /> ' Page 3 of 5 , , <br /> Relative Elevation Ground <br /> igulotted and contoured on a scaled site map (F <br /> re 3 <br /> p - , <br /> elevations were <br /> Water MaP) F <br /> ground water Were purged from each well <br /> 1 througl1 MW-9 utilizing } <br /> After levels were measured,three water werelremoved from wells MW- s through <br /> at regular intervals _r <br /> approximately'1 Q to 14 gallons of <br /> Tem erature, pH and conductivity were mea <br /> a two-stage submersible pump model 52200 water analyzer Stabilization data and field logs are <br /> from each well using an ICM m water was stored in 55-gallon drums and stared ori-site in an area <br /> included with Appendix A purged <br /> inaccessible to the general public <br /> WATER-SAMPLING w <br /> 3 2 ' GROUNI? t prior ` <br /> i MW-9 were allowed to recover for a minimum of one 9 utilirang <br /> wells MW-1 throug wells MW-1 through MW <br /> - <br /> Momtonng les were collected from le was collected from <br /> to sample collection Water camp lon ropes Sufficient camp les, <br /> bailers and new <br /> drochlosic acid as a preservative for the samples, <br /> dedicated,disposable Polyethylene <br /> EPA vials containing y <br /> bles <br /> each well to fill three 40-m1 drochlonc acid Care was taken to encontatiin rs were <br /> and a ane-liter amber bottle with no by Ground-water sample <br /> were present in the VOAs after filling and capp $initials <br /> with the well designation, date, time, and sampler <br />` WATER SAMPLES <br /> LABORATORY ANALYSIS OF GROUND <br /> 3 3 I- Laced in a chilled container and <br /> was logged on a chain-of-custody form;p <br />�} Each ground water sampleoratories (CAL), a California state 'certifiedleum Hydrotca bons <br /> ical Lab <br /> transported to a Castle Analyt was analyzed for Total Petro toluene, ethyl r , <br /> analysis of hazardous materials Eachansample TipH-d), and volatile aromatics (benzene, <br /> gasoline and diesel(TPH-g 602, and 601, respectively <br /> quantified as g in accordance with EPA methods 5030, <br /> benzene and xylene BTE&X) i . _ <br /> 4.0, FINDINGS IENT, <br /> iWATER ELEVATION AND GP <br /> 41 RELATIVE GROUND round water <br /> round water in each well was'calculated by subtracting the g The <br /> " The relative elevation of g elevation{Table 1 - Ground Water Elea 33 feet, and on the <br /> om the surveyed relative casing <br /> depth fr 1 through MW-9 ranged between 21 46 and 21996 <br /> to ground water in wells MW- <br /> se a roximately 2 8() feet between November 1995 and February client o£ <br /> average rose PP <br /> direction at the site, is generally toward the northeast at a gra <br /> Ground water flow dire r <br /> F i <br /> Y <br />