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p <br /> M AW <br /> 14 <br /> chevron/Alrport <br /> February 1931 <br /> I-to 2 feet above the first <br /> les collected in the field,apProxirnately les <br /> Analytical results of soli same <br /> aline and BTFa(. COP <br /> -- encounter with groundwater,were all nondete with regards to�'ti as 995 <br /> endix D <br /> of the laboratory reports are presented In APP <br /> GROUNDWATER <br /> and December 3. 1990), <br /> •-• we11 installation{November 20 and 21,rdd�approximately 3fi-�39-feet <br /> At the time of monitoring- <br /> ancauntered at approxi�rtatefy 5i-to 54 feat below 9 roxlmately 53-to 54- <br /> groundwater was monitored,Its elevation was apP ml�r 4, <br /> below sea level). At the time that groundwater was <br /> unconfined conditlons• <br /> The monitoring data <br /> collected <br /> th�otentiam�c Surface <br /> feet below grade,suggesting <br /> roundwater siape varying from north northeastdona <br /> i990,were combined with the surveyedshows <br /> a g ad elevation data to pr anal s performed <br /> Map presented on Figure 5. The � r foot. The results of the laboratory Y� ents to be <br /> �n from 0.002-to 0.004--foot per all constitu <br /> -� <br /> gradient vary g <br /> groundwater samples obtained from the site on December 4, 1990,showed <br /> the g <br /> nondetectabla for TFW-as gasoline and BTEJ(. <br /> i <br /> SUMMARY AND CONCLUSIONS <br /> Chevron Service Station No.9 5075 indicate that the underlying <br /> Data collected frem Former Che arse sand and sandy fine grave <br /> sift with Tenses of fine-t� law sea leve!. Tine <br /> sediments consist of clayey feet below grade,or approximately 37-feet be influenced by a cone of <br /> is present at approximately 53 groundwater must <br /> be$xpla<hation for the low groundwater vrater level Is The roundwater appears to be in an unconfined <br /> a e In the aa re <br /> depression due to municipal pum P g <br /> I <br /> condition. j <br /> which were collected as a result of the well lnstaliatlons showed <br /> Samples of soil and groundwater, <br /> no evidence of adsorbed ar dissolved gasoline hydrocarbons. <br /> R. CLOSURE <br /> t <br /> hopes that this information is sufficient at this time. <br /> Groundwater Technology if you have any <br /> p g7i-23ti7. i <br /> _ ions ar Comments,please contact our concord office at(415) �� <br /> quest 1 <br /> l j�I GROUNDWATER <br /> 'I WiNOIAGY,INC. <br /> F <br /> �4 <br /> A <br /> m+:m,nnnnr.�xrawt�srm��nnmw wewm� C�1']Plim <br />