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! d <br /> V <br /> :f 1} u. J .'t3 y.. e .t � -. '., e •s - - .r r= r :4 �, ,;4F <br /> IfS . ii • <br /> February 2005 s3 FY <br /> AGE�NC-P jectMa:98=0504 <br /> 17 ' • ';, Yf y <br /> ro <br /> a e2'of3 w r, <br /> P g CTE'Q,a California, <br /> ab'.,. <br /> ( <br /> ental L The <br /> fi Cal TechEtivirp a t;C'alifornia <br /> I chain of custody to roto in Param } <br /> r<tXanspQrtation' al" ical labo rY h <br /> Hearth Se =certified an yt <br /> ent of rvices(DHS) 2 <br /> 1 <br /> Dep <br /> artm ,F <br /> sam lesv�ere an for: "" Ce with EPA <br /> p_ tified as gasoline (TPH-g).in accordan <br /> petroleum hydrocarbons.quare <br /> Total-p d <br /> Method 8415 Modified; an and fuel additives di-isopropyl <br /> and-total xylenes (BTEX) MTBE),tertiary . : _ <br /> luerie, ethylbenzenc, E n�ethyltertiary-butyl,ether( , <br /> $enzene,.to (ETB , 1 2-DCA) and <br /> I ' ' {D1PE),ethyl tertiary-bun ether } 1,Z-dichlaroethane( , . <br /> ' TAME),ter( hbl TBA) od 826 <br /> ether y-butyl alro ( OB <br /> amyl methyl ether( DB Meth <br /> '1 ce�with-EPA . <br /> 1 �dibromoethane (EDB) <br /> in accordan <br /> y2" r <br />` 3.0. FINDINGS field data collected on <br /> w direction,and gradient were determined from laboratory analytical' <br /> Ground watex elevations' <br /> contlaminant impact <br /> to ground water was quantified by <br /> 04 August 2004. T <br /> data. <br /> TENT AND FLOW DIRECTION <br /> 3.1, GROUND WATER Gh P+p ed from ,1 <br /> ound water at,the site rang <br /> MPI <br /> event, depths.to gr <br /> ` tune of the August 2004 same g water elevation <br /> At the the well casings.Ground water elevati� at the site ranged <br /> A SL Gr <br /> 28:14 feet to 28:56 feet below the taps o . below mean sea level(MSL). <br /> MW-3}to 20.07 feet(MW-23 <br /> from 19.1 b feet{ <br /> • luded in Table 1: nd water was <br /> -data is inc <br /> "r the wel!elevation data,. <br /> mately 0.01 foot/foot <br /> oundvlater flow direction was calculated fro the <br /> gradient of app st 204,4, <br /> Gr <br /> inferred to flow toward the southwest.under a by <br /> . .,• 'antoured ground water elevations as measured an.04 �'ugu <br /> ( tt),Figure 3 illustrates the c s <br /> RESULTS OF GROUND �1►�ATER <br /> SAMPLES <br /> }' <br /> 3.2. <br /> 2 ANALYTICAL .from well MW-1 at <br /> d water sample collected <br /> ' the ground j.'.•' <br /> TPH-g and MTBE were detect micrograms per liter(µdl) <br /> equivalent concentrations of 3.00 les analyzed,Analytical <br /> h drocarbon compounds were detected inthe camp CTEL.-protect <br /> dditianal petroleum Y . summarized.in Table 2:The laboratory reporthain of custody <br /> No a les are summ AI C re ort,and <br /> results from ground water samples uali control(Q Q } . p <br /> 448031),'quality assurance and q tY <br /> No� CT214'4, d Geo nv4ronmental,iae. <br /> 'AQvaace r <br />