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w <br /> Kgr <br /> 2 �M <br /> L S rr I.C OWA C-N. <br /> Station Numbct. <br /> PO"11cr chcvrml S5 9.191 S <br /> -S'Aflon Addrtiv 43 Ew I ludins Way <br /> SI(AAson.Calltonila <br /> Minuct: U's flacklund <br /> Chcvron US.A,Inc, <br /> 2410 cunino Ramon <br /> P.O.BOX 5WI <br /> San Ramon,Uifornia 94583.09al <br /> 415.842-gaso <br /> Consultant to Chevron: M Dginceying.Science,udrochnology <br /> 41 Lala)-clic Circle <br /> I-Afayetic,Califoml.% 9-:5,19 <br /> 415.293-7077 <br /> RA I'r*cj Geologist. <br /> Tcrry R.Winsor <br /> 2. ACTIVITIES,MARCH TIIR0UCII SEPTEMBER 1990 <br /> MOM to water have been Monitored quarterly Since the wells*,cre inslglied in 1988. When <br /> sufficient water occurred In the wells.groundwater was jjmplCjand analyzed. In March IM& <br /> the CrOundw-21C.-elevation was about 30 feet below MCAn=level('orbic 1).and only One%,cli, <br /> MW2 M-18UM 0contained purgeable groundwater. The remaining writs were dry an 21 Sep. <br /> tembtr and 18 December 1989,and wells MWI.116M,and MW8 were dry on 12 July 1989. <br /> All eight wells including MW2(Figure 1).were either dry or cormined very little water on Z& <br /> June and 18 Sept=bcr 1990,nuking it u.1fCAAk to Sample during the second and third quarters <br /> of 1990. <br /> A cumulzfivc history Of a=nalytical results or groundwater sampling Is provided in Table 2- The <br /> l3borstory report from 22 March 1990, when only MW2 could W sAmpjcj. is provided as <br /> Appcntlix A. A Well SAMAing ficid(onn from 22.kt=h IM 10t MW2 4 Included in ArperWix <br /> B. <br /> I PLANNED ACTIVITIES <br /> Ail wells%il,continue to be gauged qumcrly err depth to water a:xVordcpth to bottom U%ing an <br /> optical intetracc probe. EA will be prrp3rcd 10 Purge and sample any wells which contain <br /> enough water to%=PIC- <br /> Late 1990- <br /> pjA�;OC&-tst two dmm'"Itz whkh%Vuld cumd <br /> deeper squirer to provide inrorm3ijon On the vertical extent of cont=jA31104 under the site <br /> MIUM 1 and 2). <br />