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17-Jan-02 <br /> --- 4 ir.. Q O <br /> c O <br /> CV <br /> EXPLANATION 0 >r r <br /> MW-20B <br /> V p 0 <br /> Shell groundwater monitoring well b- � o <br /> NA <br /> Adjacent site groundwater monitoring well 1 (<O 5) <br /> ;� Destroyed groundwater monitoring wellNM-11A Z <br /> -1628 ;r <br /> tour in feet referenced -16 N <br /> ( } MW-20A {� (a 5) C G <br /> Groundwater elevation conT } -15 86 1 <br /> to mean sea level(ft msl) Arrows indicate ( (<O 5) I `� r-, (<0 5) <br /> approximate groundwater flow direction j f (<O 5) Former Chevron ! 0 V <br /> Gll 10 } {NA1B <br /> l Service Station <br /> V <br /> -12.53 Groundwater elevation in ft nisi — — _ — — — r '-1} <br /> f (<0.5) � <br /> (<0.50) Benzene concentration in parts per billion(ppb) { (<0 5} y <br /> (<O 50) MTBE concentration in ppb } W-19C <br /> Beacon W �`NA <br /> <x Not detected at detection limit x _� n I a } (<0 5 Z <br /> Savemart _7B <br /> NA Not applicable- well screened in a deeper 11-1 NA{ x f <Q 51 M�1r-401. <br /> water-bearing zone H l {MW-3 �+ <br /> �'4-ll I (<0 50) ,� -1763 #EX-1* /� 16.96 � <br /> Note All analyses by EPA Method 8260 Groundwater (<0 5) Q {(<0 5) `-19•i90-"" \(<0.5) Mme'-2 Z <br /> y <br /> analytical data from Shell wells are not consistent with 1 t (13) (<2.5) (220} �± <br /> historical data or data collected during December 2001 F-l -i6 70 <br /> Arco Station <br /> MW-7 <br /> 1'6 511 /�- � MV1,.5B �13,404) (<0 5) � <br /> Chevron wells were sampled on 19-and 20-Nov-01 (<O 50) -17.1) } NA l�y 1 -3 (<0 S) a { <br /> * Extraction wells are not used in cont6unng { (0 7)f {(0 5) <O �$ { <br /> Approximate hydraulic gradient=0 013 -2 — EX-3*_ { <br /> �-Z Ii'T�'-3 i4tVl.-2 � � -221�MW-1 MW-13 <br /> MW-5A (<O 5) -1815 <br /> -16 8S O Q <br /> -1711 (<0.5) (<0.50) <br /> (1so) I (60) <o s) CO <br /> (0 7) -1680 :�F- <br /> (<O 5) Q <br /> WEST KETTLEMAN LANE (150) V <br /> Mw-ss <br /> NA MW-9A <br /> -1709 <br /> W MW-6 (f O 5) (<0.50) MW-12A C <br /> -16.79 (1 0) } -1687 <br /> � <br /> (7 7) MW-SA (<O 50) tC <br /> 0 W-s N _ <br /> �l-7 {1 1 - - MW-SB=-16 S -1 — — — — — — — — v — <0 5)?4W-12B <br /> � f MW-5 NI -2 0 NA (<O 54) I ZNA �y} <br /> �f (<O 50) (<O 5) I (<O 50) v <br /> -(5 5) (<0 5) } I NM-9B I (<0 5) <br /> (I 1) NA <br /> (<O 5) <br /> x 1 (<O 5) I <br /> -N_ } Golden OxCD <br /> W-12 S$ Restaurant } I I Q. <br /> MW-8 I e I ' ) <br /> -16 87 ) m <br /> MIN'-(4 2) /I M NAS MW-1013 I v <br /> (5 3) } til NA <br /> I (<(<D 5)0 50) ]AW-10C (<0.5) L <br /> Scale(ft) t� 1Y_6 �-- I ti— — — — — — — — — — — — I NA (<O 5) I E <br /> } } } 0 S) MW-10A t� m C <br /> 60 i20 (< <br /> ® }"- I {<0 7 I FWRE ,� Y <br /> 0 30 `1 L- <br /> (<0 5) � <br /> S Shell-branded } °i <br /> Municipal Water Well ? <br /> (Independent) } p -a <br /> Service Station I Ch C\1 0 <br />