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MtBE concentralons <br /> in soil @ 6-10 feet,bgs N <br /> 0.006 mglkg* 0 <br /> O 0.006-1.0 mg/kg <br /> 4D 1.0-2.0 mg/kg <br /> CNSB-3 <br /> MtBE concentralons <br /> In soil @>10 feet,bgs ' <br /> NSB-4 � <br /> (9 < 0.006 mg/kg " <br /> OCNSB-2 O y <br /> a.006 -o.17 mg/kg ® � � <br /> ® Existing Monitoring Wells(MW-23B) O <br /> /-W 648 <br /> ® {�1 <br /> (1) New Monitoring Wells(MW-64A) <br /> _@NSB-1 ,,.. <br /> 134 <br /> 137 0 i,a a? €Ste. <br /> • Historical Soil Borings(SB-1) _ � , . � <br /> 133 <br /> • New Soil Borings(NSB-0) V1W-45A <br /> _ SB-3 iUl J-5A 136 <br /> ® 132 138 MW-12B <br /> ASTs MW-i 5A <br /> 4rNSB-6 <br /> SB-6 MW-3361 <br /> Excavation Areas CN5&© -4�1 UA <br /> W-2 1V-4 131 -13B <br /> 0 <br /> Buildings -2 SB W-25AMVV--37UA MW 51A <br /> arehous MW 14A <br /> -40U!® / � <br /> MW76655A 42UA 'SB- PL-3� MW-WA <br /> MW-61 UA ® PL-2 -26A W-15 <br /> Oil-water separator $ S¢_1, �NSBa <br /> M W-7 • <br /> ® • W-38UA <br /> Underground Utility Locations PL-1 _ 139 <br /> PL-7 <br /> pipeline <br /> main product fine TTLR PL-8 4rNSB-8 <br /> oil-water separator <br /> electric �MW-62UA Warehouse <br /> gas line �P -9 <br /> phone PL-4 Office MW 44A <br /> E$ <br /> water eNSB-10 <br /> MW-6A MW 63A <br /> ® TTLR PL-5 <br /> (NSB-16 / NSB-14 CNSB-15 MW-46A <br /> M W-34 UA <br /> PL-6 <br /> MW-35UA SB-18 <br /> • <br /> Explanations: 4rNSB-11 <br /> tBE=Methyl-tent butyl ether 4rNSB-12 <br /> ,ng/kg=milligrams per kilogram 58 1 tgNSB_g <br /> SB=New soil borings(displayed in red) SR-17 • <br /> B=Historical soil borings(displayed in black) <br /> STs=Above-ground storage tanks <br /> =The laboratory detection limits(LDL)for MtBE in soil were Schedule of Tankage SS 20 <br /> generally 0.001 mg/kg,however some LDL were greater Tank Contents • <br /> than 0.001 mglkg. The lowest detection of MtBE was 131 Supreme Unleaded Cher►ronTexaco <br /> 0.007 mg/kg,therefore the value of 0.006 mg/kg was 132 Mid-Grade Unleaded NS, <br /> B-13 �G-15 3017 Kilgore Road, Cheunn Fuel <br /> used to represent non-detect values for MtBE In soil. 133 Firewater • Suite 100 Terminlal ki861621 <br /> Rancho Cordova, 22888 Kasson Road <br /> 134 Transml Diesel h California Banta,California <br /> Note That some LDL are greater than 4.006 mg/kg. las Transmlx Varieties �) <br /> 136 F€rewaler <br /> 137 New Ethanol • JOG Na.77CU 1187+',es:GM <br /> K 7 DSN <br /> 0 25 50 100 150 200 138 Diesel O MtBE Concentrations in Saturated Soil(>6 feet, bgs) <br /> nWG:M <br /> Fee, 139 Unleaded nmtso oamsvi Plate 9 <br />