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I <br /> 2 Aug-03 <br /> ® Sidewalk0 <br /> —SB-1 <br /> SB-18 IEXIP�AI�A'II'I®IST g <br /> Q Soil Boring Location <br /> --------------- ------------------------ ,�—_ � Groundwater Monitoring Well <br /> ..,._ 9: � <br /> Deep Zone Groundwater b <br /> { Monitoring Well <br /> Estimated extent of TPHg 1n loll <br /> Ar EAST FREM®NT STREET � g <br /> Estimated extent of benzene in soil <br /> � I � <br /> IF <br /> I <br /> ® SB-.4 - - B-2&SB-3 <br /> S SB-7 � �__� ��► <br /> Groundwater Flow Direction ' ® . Planter �,� ! <br /> SB-5 ® I ❑ � ®� � <br /> in the shallow groundwater zone S-1-S5 i ~~ ~ --9B-6 I <br /> 3Q98 through 2Q03 ! <br /> Historical(shallow)groundwater gradient ranges from /i �\ \ E Canopy SB-11 i <br /> 0 0002 to 0 005,with the average being 0 0015 /i/ //i 1\ (typ) USTs ! f N, <br /> ! I <br /> SB-1\��/ <br /> FormerUSTs — <br /> \ // �� SB-10 ® S-4 ® k <br /> Date '1PHg \�\✓/// 54-83 k } Scale(ft) <br /> Sample Depth(ft) Sampled (mg/kg) SB <br /> 9 \✓/ ®� T Q <br /> SB-3 50 24-Apr-98 18,700 Waste Oil \O.\ f , 0 5 15 30 60 U <br /> SB-0 20 15-Dec-99 7,820 �P- �3-gel Tank <br /> ` I <br /> SB-2 355 28-Oct-97 5,700 ` <br /> S-1 60 30-Apr-99 5,400 ! I <br /> SB-3 40 24-Apr-98 3,800 <br /> SB3 45 24-Apr-98 1 2,400 L------------ -----e <br /> 5-i 55 LO-Apr--±" 600 <br /> 800 Dispenser Island <br /> SB-6 10 640 Station Building and \` (typ) ® ! <br /> s 1 65 <br /> SB-6 30 70 Lube Bays SB-13 ; <br /> II <br /> k <br /> (D <br /> Date Benzene `J SB-15 S-2 <br /> Sample Depth(ft) Sampled (mg/kg) SB-14 f <br /> SB-3 50 24-Apt-98 26.2 I <br /> R <br /> SB-3 40 24-Apr-98 2.24 <br /> S_1 55 30-Apr-99 0.89 1��r, <br /> SB-4 70 13-Dec-99 0 212 ®�Is 'p' <br /> SB 5 70 14-Dec-99 0127 I '� <br /> SB4 65 13-Da;99 0124 <br /> --SB 4 75 13 Dee-99 00186 y <br /> SB-$ 70 13-Jun-01 0 011 <br /> SB4 105 13-De.99 00093 <br /> C � <br /> E <br /> LLL <br /> FIGURE +- U <br /> O <br /> 3 4) w � <br /> L o <br /> 0 <br /> CID <br /> U) N to <br /> i <br />