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15-Ju1.04 Q O EXPLANATION 0 2 n C C N Shell groundwater monitoring well O O >, MW-10 MW-9 Tosco groundwater monitoring well V -9.42 -9.70 Destroyed Tosco groundwater monitoring well (<0.50) (<0.50) Groundwater elevation contour in feet RI (<0 50) (<0 '0 referenced to mean sea level(ft msl) Arrows 3 v indicate approximate groundwater flow C 0 ELMWOOD AVENUE �� - direction O U -977 Groundwater elevation in ft msl >✓ (NA}� (<0.50) Benzene concentration in parts per billion(ppb) ti - - -- - - Afi�i-13 � -9..88 7 -9.65 (NA) (NA) (NA) MTBE concentration in ppb (<0 50) (N`9) <x Not detected at reporting limit x L (<0 50) I NA Not analyzed V Auto I *Not used in contouring Service Approximate hydraulic gradient=0 002 Auto Waste Oil kd APN O APN I UST Former I 113-042-1 113-042-2 Service I`I UST Pit -�-\MW-11" I ! I -13.58 16, APN ! 1 (<2.5) 113-042-3 I (4 5) I L! MW-5 Dispenser APN MW-4 (0 50) Islands I -9.77 13-042-4 -9.29 (0 50) a a MW-7 I (<0.50) i I (<0.50) � -0�-(<1�) I (NA) Q (28) MW 3 (<l00) -9.45 o m Tosco Station (<100) I Former _9 2 ? Former Waste �1 (<100) UST Pit Oil UST FT (<20) -�- -9.79 1 Q Kiosk -- (NA) -I (56) U I Former USTs (NA) a I USTs MW-12 Former I - ❑� -9.20 -930 Dispenser (<0.50) f--� ] Island MW-2 (j p) — �(Typ of 3) — premier Credit Union APN APN 113-092-14 113-042-13 Dispenser I Former UST MW-6 Islands ----� Former Shell Service Station 1 -9.17 MW-1 (<0 50)— — — — — — — — — -4 37 — (<0.50) _ (0 7911) (0 50) -9.58 Sidewalk I O (<0.50) p (NA) . COUNTRY CLUB BOULEVARD RV •; y ) —MW-8 -9.21 41 E ,C U .. FIGURE2 L 7 U 0 20 40 8o E U o o LL