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16-Oct-01 CL <br /> ' EXPLANATION v N <br /> Shell groundwater monitoring well O 0 <br /> MW-20B � <br /> Adjacent site groundwater monitoring well J NA V M <br /> — — —��_�L r (<020) _ +--' ai <br /> -% CL <br /> Destroyed groundwater monitoring well (<0 5) j MW-11A O a) <br /> R Groundwater elevation contour in feet referenced ( J 01— -15 81 <br /> ft m +� V <br /> y / ~ 1 <br /> to mean sea level ( sl) Arrows indicate j J 0A 1 1� _ (<0 20) C <br /> /approximate groundwater flow direction MW 1 ( -16 76 ,� <br /> 0– �<0 5) 0 V <br /> �4-t1► r J Former Chevron f W <br /> -1253 Groundwater elevation in ft msl (<0 20) Service Station 11B L, <br /> — — 1411 '-1 J ,� (<0 5) INA 0) <br /> (<0 50) Benzene concentration in parts per billion (ppb) f ! _ {<0 20) 0 <br /> (<0 50) MTBE concentration in ppb J J Q1 J (<0 5) <br /> MW-19C <br /> <x Not detected at detection limit x ��LF-9 J Beacon W NA f O <br /> NA Not applicable-well screened in a deeper ��_t Savemart J I (<0 20) Z O <br /> (<0 5) MW-4 MW_2 w L <br /> water-bearing zone �� t t J ( 0 20) F" MW-3 .1662 -1645 ►� CD <br /> < <br /> NS Not sampled O -16 76 (15)J (<0 20) <br /> (<O$) (064) t 21ixj,�*',.2 <br /> 0 0 (340) (<0 S)I Z <br /> Note All analyses by EPA Method 8260 Arco Station -SB ¢ NS l � _.1 � <br /> Wells EX-2 and EX-3 were sampled on September 6, 2001 II MW-7A <br /> * J -16 74 Mme'-6 NA �� -!3 <br /> Extraction wells are not used in contouring f� "_3 tv , 11-2B (<0 20) (-168 – <br /> 0 5 MW-1 w <br /> J II (<0 20) ) EX-3* <br /> Approximate hydraulic gradient= 1) (<0 5)_19 47 -1750 <br /> TA-2 1t� '-3 MIN-2 (2) (<0 20) (<0 20) <br /> MW-5A (290) x(120) — r <br /> NA MW-14(EX-2)* O Q <br /> (065) -16.93 <br /> (1) / 0 30)\ I"1 MW-13 m <br /> WEST KETTLEMAN LANE (160) ` / -1582 <br /> MW-8S 1<1 (<0.20) <br /> MW-6 / NAI (0 8) Q <br /> -1639 (<0 20) U/ ' <br /> W (<a 50) (<0 5) Mw-9A <br /> OW-8 (<0 50) / -v <br /> / _ -1612(<0 20) MW-12A <br /> T��'.7 E" -17 5 (0 5) -1589 O <br /> C / — -16.5 — MUn W-8B ` MW-8A _ _ _ I (<0.20) <br /> -2 SNA -17 55 1 — -- — — z — <0 5) _ � <br /> MW-5 (<0 20) (<0 20)J <br /> U J �1�1-t -168 (<0 5) (<0 5) MW-12B <br /> W-5 (<0 50) / I MW-9B NA V <br /> Y ( (<0 50) NA <br /> 1 <br /> ( (<0 20) i <br /> J J (<0 20) <br /> II MW-4 <br /> W <br /> W-125 1000o Golden Ox J l I <br /> J *MW-8 Restaurant <br /> J -16.66 16 5 i I Q <br /> J NINN(<0.50) J MW-17B I a <br /> (22) NA _ ' MW-10B <br /> Scale(ft) J 16 0- - _ COr <br /> rf ��_6 NA <br /> 0 30 60 120 <br /> l (<0 5) Mw-lac-� (<0 20) <br /> ®J J J NA (0 8) I-- — (P CO <br /> W-4 <br /> -{ I E <br /> J J (<a 20) IIA C 2 m <br /> Shell-branded o <br /> (<0 5) -1582 I 3 ` <br /> f Municipal Water Well J (<0 20) FIGURE 0 <br /> (Independent) (<0 5) I — °? U <br /> Service Station <br /> co C\1 0 <br />