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I r LEGEND: O N APPROXIMATE r SITE BOUNDARY <. I I APPROXIMATE MW-10+ GROUNDWATER MONITORING WELL PLANTER J EXISTING QUIK STOP TACO BELL OF LOCAL UPPER AQUIFER _ MARKET SITE BOUNDARY C t� t MW-9 GROUNDWATER MONITORING WELL t I OF LOCAL LOWER AQUIFER Z IW ,.I — r � m 3 ATC-4 - SOIL BORING 1 0 Z Q t I I r SHP-fi Q SOIL BORING to r n MW-4 - - � � TOTAL PETROLEUM HYDROCARBONS <0.50 ASPHALT AS GASOLINE (TPH-G) IN ter [0.58j EXISTING MICROGRAMS PER LITER (ug/1) ASPHALT ff SMP ' Z SHP-1 I <500 J I Q I <5.Q BENZENE IN ug/I <50 Of I IS MW-3n <�5o i [42Q] METHYL TERT-BUTYL ETHER (MTBE) �, <sa Q in <0.50 OUTLINE [36] I IN ug/I BY EPA METHOD 8260 OF�� MW-1 R I MW-6-+0, 4 ' [<0.50j CANOPY < NOT DETECTED ABOVE LISTED DETECTION LIMIT SHP-3 I t ---N PUMP PUMP _ I SNP-5 { APPROXIMATE — — MW_5 I -{:� LOCATION OF T UNDERGROUND — _ EXISTING MW-7 GROUNDWATER MONITORING WELL SAMPLES STORAGE TANKS i --N PUMP PUMP I TACO BELL WERE COLLECTED ON 01/30/04. ca I.- 0 u <50 PLANTER ATC-5 <0.50 PARKING ' <500 MW-2 ]g LOT ATC-6 [430] - ATC-1 PLANTER • -6 SIDEWALK MW-1D SIDEWALK SCALE 30 0 30 FEET — — — — TP —G/BENZENE/MTBE CONCENTRATIONS G W E S T H A M M E R 'L A N E IN .GROUNDWATER, LOWER AQUIFER' 01/0 .4 I (MW—S, MW-6, MW-7 AND MW-10 I ATC-2 +ATC-3 +ATC-4 QUIK STOP MARKET 132 3555 WEST HAMMER LANE STOCKTON, CALIFORNIA SOURCE: SITE SURVEY BY RON ARCHER, PREPARED FOR CIVIL ENGINEER, INC., DATED DECEMBER 14, 1992 -- — QUIK STOP MARKETS, INC. WELL MW--8 SURVEYED BY FREMONT, CALIFORNIA SIEGFRIED ENGINEERING, INC. <50 DATED 12/9/99 <0.50 © 03/03/04 ISSUED FOR REPORT EC .. [<0•50] ASSOCIATES INC. BMW-8 DATE: 03 03 04 FIGURE $ PROJECT NUMBER B2503.3204 No. DATE ISSUE / REVISION CK'D 6Y Aa'D By I SCALE: AS SHOWN