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r <br /> JI <br /> �j { <br /> Ll <br /> Qua'rterly Report May 1998 PACIFIC'CAR WASH }` r <br /> 4405-Pacific-Akenue ' i <br /> - .f rr n it rsr <br /> y �, ,Stockton; CaliforniaUT <br /> � '-� '�-•.-��F -, �.�3a�-,'_� <br /> - " _ �� � .w; �.-• f _ �n -s .�'"_ -s: � '��_F .rte. ,- i -�` � - <br /> ��` F' <br /> 1.0 INTRODUCTION AND SCOPE OFWORK a {' <br /> .-`+ 'fir �-.� -i --v � z-:- - ,� -Sr --' .•.x - ,, -a ��-r_��"`- 7 .�,r 4n• <br /> Ih-accordance-�with'a.requestJfrom Ms 'Lela Billheimer, .Chef Executor for t7he Estate of J C _ d <br /> Shaughriessy,Advanced GeoEnvironmental Inc�(AGE)has-prepared this Quarterly-Report,for 4405 _ <br /> ` <br /> L <br /> . Pacific Avenue;'Stockton' California(the site) The location of the site is illustrated in Figure°F1 A #" <br /> plan of:the site is illustrated rn Figure 2Z� =�" � <br /> - —y _ a.-, _ cz:tom ';,.-, - <br /> '014r' 7tff­ <br /> objective of the work was to monitor dissolved petroleum hydrocazbori'-concentrations n ground <br /> water and-to..charactenze . round;wat- 'flo6v_dir&tioh and radient-on the site This re orbs ti <br /> g g it A_ .. <br /> c prepared_in accordance with 'guidelines established by the San -Joaqu-in4. <br /> County_Public H-ealth ' <br /> Services Eriviror�mental.Health Division (PHS EID) acid the Central'Valley Regional Watery <br /> h.. Quality_Control Board (CVRWQCB) for invesfigatioii of underground storage tank(UST) sites}A <br /> surimrnary ofprev�ous:in�estigations at the site=was included iri'tlie Preliminar}�Site_Investrgatroii all <br /> Evaluation Re ort Januar 1997 dated;l5 Janua 1°997 and re ared b AGES <br /> P Y ry prep ,y <br /> PROCEDURES = 4 R a 1 <br /> t = r e <br /> � -t `�� may;" � ��, a5 -� ! --s ry."r-�. "t -r is rte• 3, sk }.M �� � ''` k� <br /> ,2.1 : QUARTERLY NONITORING AND SAMPLING ACTIVITIES <br /> .- - --� t_ - -- fir. - <br /> On 14 Niay 19lie depth to ground water was measured 1-"- <br /> 98-tnmohiGfi g wells MW 1 through MW 6 <br /> (the=monitoririg wells) frons-the top of each respective welt-.casmgkto the'nearest'4 01.foot utilizing "{ <br /> `a.Solinst'waterlevel meter:-Ground water-elevations from the monitoring-weilsawere=calculated by- <br /> :' subtracting the-meas red depth to ground wdler.from the surveyed relative casing elevations (Table �w <br /> 1)..-Ground water elevations'with respect to mean sea; evel were plotted and contoured on a scaled - r <br /> .b -lC'c <br /> site map..(Figure 3) <br /> =After Ovate-keels were measured,.appraximately nine to twelve gallons(a minimum of three well ,r <br /> F' - 'volurimes'- er well of:water were ur ed-frorim fhe monitoriri� well s.utilaziri a two"�sta e submersible - <br /> r_ . . P )- - P .g g . g g <br /> f c ,. .. t-= <br /> . - <br /> PUMP.",`An ICIvI Model-52200`water_ analyzer was`.utilized to monitor temperatures pH and' ; <br /> ` ' T:conducti gty of purged water at regular purge volumes'-Dissolved oxygen-content in thekfinat purgef i <br /> water.was measured using a YSI_Mode1-55 DissoI -d,0'– Meter following stabi'lizat'ion of the-n <br /> ,produce7-1 <br /> d-water. Stabilization data and field-logs_are included with Appendix A, dissolved- n <br /> oxyge _ ` " 1 <br /> field measurements are summarized iii Table 2�Purged ground watei was containerized ifi75S=gallon <br /> drums and stored on-sate in.an area lacking general public access <br /> _ 'meq 'yP':�i. _ ,i •3 - - # 4 .f+l " - .sa [' 'T-d ec - <br /> �. ;.. v:_ <br /> -•s ` %' - �+� .t. ,'-. �' --- T'� X31"'�' - ,. � ' - ` r Arl <br /> 711 <br /> -•' E -'`-' -t- <br /> '+' r - e2'�'-.. - _ . . ,�,� 1 . : ,.;�..� ;4 anced GeoEnvir IIIC11tNI�� C +may <br /> �- <br />