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7 <br /> 24-Apr-02 <br /> N <br /> Ortho u I _ j cc Q- o <br /> LMattress Ci <br /> Jack In The Box California Bagle Co EXPLANATION •E <br /> U') <br /> -� Groundwater monitoring well L � <br /> Vapor extraction well V i m <br /> O C u_ <br />'7���PORTER AVENUE ® Proposed groundwater monitoring well � v <br /> O C <br /> O <br /> MW-2 0 <br /> -2000 MW-1 Groundwater elevation contour in feet V <br /> (¢0 50) -20.03 y referenced to mean sea level(ft msl) ♦. <br /> (<5 0) (c0,50) Arrows indicate approximate <br /> -1847 Former Dispenser (<5 0) groundwater flow direction <br /> USTs Islands <br /> (9,200) Existing <br /> 02,500) UST -2010 Groundwater elevation in ft mil O <br /> L <br /> Location (30) Benzene concentration in ppb (; <br /> MW-5 <br /> -19.76 (6 8) MTBE concentration in ppb by <br /> (0.56) + �W"1 EPA Method 8260 <br /> (<50) Parking Lot <br /> ¢x Not detected at detection limit x <br /> Canopy <br /> .1: <br /> o 0 <br /> E'+ ApproximateI hydraulic gradient=0 003 <br /> *MW-3 *Based on histo cal data,the samples for MW-6 and <br /> -1994 N11W4 MW-7 appear to ave been swtiched <br /> (2 6) -2010 <br /> (<5 0) (30) Note VEW-2 not used in contouring Q <br /> I <br /> -7,0 00 � Parking Lot (6 8) � I — <br /> MW-6 ra m <br /> -19.96 MW-8 <br /> (3,200)* <br /> W <br /> U <br /> -20.25- <br /> Parking Lot <br /> U <br /> MW-7 S <br /> •20.08 U <br /> (36)* <br /> -ZQSO (c5 0)* $14 �` C <br /> O <br /> 20.53 T % ` ® MW-9 <br /> CO <br /> (c0 50) \ <br /> d <br /> (<5 0) MW-10 Scale(ft) C7 <br /> 20.25 Parking Lot _ •� <br /> (<5 0) 0 3b 60 120 <br /> _ (<50) <br /> CaPayless S <br /> a) c <br /> o <br /> ,ini Storage on -0C <br /> O v <br /> aFIGURE C U <br /> L O <br /> CL � <br /> Alleyway <br /> m o <br /> m N w <br /> 0 <br />