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G40 File: Drawn By: ante: Project Na. <br /> 0052662 02 005266202-01.dw J. Estrada 10 02 O6 0052622.02 <br /> -- OUnocal <br /> ASTs O Sto k o bi'c Bel ill d <br /> — — — S9_3 <br /> Lined Drainage Pond <br /> I <br /> • / ss I <br /> / Transformer <br /> Former Liquid rr l� <br /> / Covered Storage Tank Farm SS-20 IILJ 13 Acid PumFormer p <br /> ■ SB-7 <br /> / SB-4 O Q 9000 0 I Former Anhydrous <br /> o Og ° 0.79 Ammonia Tank <br /> / —0.4 O O p O <br /> / O I and Pump <br /> Dry—Bulk B• 00 <br /> O <br /> Former Storage 071 oer <br /> Mlxing Warehouse 5 0.05• Tower <br /> Arca Truck Loadout <br /> / Ory Storage Office SS_3_ <br /> — Access <br /> — — — — — — Underground — Road <br /> Septic To <br /> Notes: <br /> Ground water elevations were measured from <br /> temporary, one—inch wells in January 2005 and <br /> the contours should only be considered <br /> Storage estimated. The temporary wells were <br /> WarehouseOffices I constructed and screened between 7 and 12 <br /> — feet with sand pack. The wells were <br /> I not developed <br /> and and only allowed to stabilize for <br /> — — — — — — — approximately 20 hours before water levels <br /> were collected. <br /> Site features (buildings, etc.) were not surveyed <br /> so therefore site layout should be considered <br /> approximate. <br /> LEGEND Figure 2 <br /> Approximate Direction of <br /> 55-1, Environ (1997) Soil Boring Location Ground Water Flow preu/ous/17uest/98t/017 Samp/1179 Locations and <br /> SB-5 0 ERM (2005) Soil Boring Location Approximate Ground Water Groundwater Gradienti17 Ja17uary2005 <br /> Elevation Contour <br /> 071 Ground Water Elevation on 12 January 2005, (contour interval — 0.5 feet) Lesco, /17c. <br /> Feet Above Mean Sea Level Property Boundary <br /> 2829, 2835 West Washington Street <br /> SS-10 ERM (2005) Surface Soil Sampling Location kr— Railroad Spur 0 80 <br /> Stockton, Ca/ifornia <br /> Approx. Scale (feet) ERM 10106 <br />