ARCHIVED REPORTS_XR0004460 - Laserfiche WebLink

Home Browse Search

SC&D Boy ett Petroleum 419 South Main Street May 22, 1998 Manteca, California Page: 2 1 ' 1 The soil samples submitted for analysis from both the stockpiled soils and the dispenser ' locations were analyzed for gasoline by EPA method M 8015, BTX&E along with MTBE were analyzed by EPA method 8020. The results of that analysis are found in Tables 1 & 2 of this plan. 3.0 Scope of Work VVI-IF proposes two 2 shallow soils to a depth of 30.0' b to confirm the p P { ) .- g p � presence or absence of petroleum hydrocarbons and the vertical extent of the soil ' contamination in the unauthorized release area. The event will provide the data to evaluate the contamination at the dispenser island (Figure 2). Soil boring locations ' proposed in this scope of work are identified in Figure 3 of this work plan. 3.1 Drilling '• Permits will be obtained as necessary for all wells (including borings) before drilling begins. The soil boring will be accomplished using a mobile mounted ' drilling rig employing the use of a Geo-Probe System. All drilling equipment will be thoroughly cleaned before drilling begins, to prevent ' the introduction of contamination from off site, and between borings to prevent cross contamination. ' The borings will be logged under the direct supervision of a registered professional using the Unified Soil Classification System (Figure 4). The color, texture, moisture, plasticity (if applicable), consistency of the earth materials, pertinent soil or bedrock characteristics and any evidence of contamination will be noted. All water bearing zones and the depth at which they were encountered will be noted ' on these logs. All borings will be drilled in such a manner as to prevent cross contamination ' between strata. Exploratory soil borings within the unsaturated zone will be backfilled with a cement and three percent (3%)Bentonite mixture. The cuttings from the drilling operation will be containerized on-site during drilling for proper disposition. The proper method of disposal will be dependent upon results of laboratory analysis. This disposal will be the responsibility of the client unless other arrangements have been made.