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17-Jul-02 <br /> r <br /> CL <br /> cc <br /> EXPLANATION v n C <br /> E M <br /> + Shell groundwater monitoring well M O c <br /> MW-10 MW-9 Tosco groundwater monitoring well V +' <br /> NA O <br /> (<0.50) NA 0 Destroyed Tosco groundwater monitoring well <br /> (<0�) Groundwater elevation contour in feet O <br /> (0'56) S-6 referenced to mean sea level(ft msl)- Arrows = Ca <br /> -8.51 indicate approximate groundwater flow O O <br /> -8.51 <br /> (<0.50/<5.0, l8-Feb-02-), + direction. V (> <br /> -8.36 Groundwater elevation in ft msl <br /> ELMWOOD AVENUE (<0.50/2,600, 18-Feb-02) _� ) <br /> + (<0.50) Benzene concentration in parts per billion(ppb) % <br /> -8.5 (<5.0) MTBE concentration in ppb � <br /> (<0.50/<5.0, l8-Feb-02) Benzene/MTBE concentrations in C <br /> i ppb,date last sampled O <br /> Waste Oil APN APN <br /> <X Not detected at reporting limit x <br /> M�y_1g � <br /> UST Auto NA E 113-042 113-042-2 APN NA Not available <br /> -1 113-042-3 Note: Tosco wells gauged and sampled on 31-May-02; <br /> Auto Service (<0.50) <br /> (�0)) -8.4 �, therefore,not U ed in contouring <br /> p y <br /> Service F,-1o <br /> d <br /> 1 .$ V► ~ Approximate hydraulic gradient=0.002 to 0.007 l NM <br /> 1 1 NA z APN <br /> � � 1 -�-( ) � � � 113-042.4 <br /> (<0.50) S-3 <br /> MW-4 ,-7 pW,, -8.33 <br /> Former NA a a NA -8 3 ( 00} <br /> UST Pit (<0.50) Dispenser (<5-0) <br /> i ( ) Islands ��,-3'J(<100) + <br /> I NA (<100) <br /> I I Former UST <br /> Former �� Former Waste <br /> J I (<100) UST Pit Oil UST + Q <br /> Kiosk L_ _ __J <br /> I S-1 U <br /> Former S-2+ �' �� -8.39 <br /> �-- <br /> Dispenser (8.2) i J (<5-0) <br /> i 3 USTs i Islands (540) <br /> J Typ.of 3) Former Bank of <br /> U -2 the West Branch APN APN <br /> C:3 c::D _ _ 113-0142-14 113-042-13 <br /> )v -6 Dispenser I I <br /> NA Islands I _—I Former UST Former Shell Service Station <br /> (<0.50) r_1 <br /> �— — — — — (190) NA #S-4 <br /> — — — — -- -- — — — — — — (<5.0) •8.47 C <br /> c5.0) (<0.50) Sidewalk O <br /> (<5.0) <br /> COUNTRY CLUB BOULEVARD <br /> W <br /> V <br /> L Q <br /> 0 <br /> O <br /> MW-8 t_v <br />. NA <br /> d <br /> (<0.50) 0 .R <br /> (<0.50) Scale(ft) N L-to: <br /> FIGURE j <br /> 0 20 X30 80 It 2 � C j o <br /> Cl) <br /> L U <br /> o LL. N N <br />