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Stantec April 24, 2009 Ms. Kristi Shelton The excavation will be directed by a Stantec field geologist, who will periodically screen representative soils for the presence of volatile organic compounds using a photoionization detector. The need to slope the excavation sidewalls will be continually evaluated by a competent professional. Stantec anticipates using soil chemical data collected during the investigation to pre-profile the soil for disposal; therefore, soils will be loaded directly onto trucks to the extent possible. In the event that stockpiling of impacted soil is required, care will be taken to ensure that the stockpiled soil is not in direct contact with the ground surface. In the event that stockpiling of soil is necessary, 10-mil plastic sheeting or plywood will be placed under the stockpiled soil, and soil piles will be covered with 10-mil plastic sheeting and secured with sandbags and/or other anchoring devices. Soils will be excavated using a backhoe and/or a track excavator and loaded onto end-dump trucks. Trackout of material on truck tires will be mitigated by manually removing soil from the trucks using shovels and brushes. Following excavation and collection of confirmation soil samples, the excavation will be covered with temporary chain-link fencing panels, surrounded with construction fencing, and appropriate signage warning of an open excavation will be placed at the work site. Waste Transport and Disposal Based on historical data, site soils are expected to receive a Class II waste designation. Excavated soils will be delivered to Allied Waste's Forward Landfill facility in Manteca, California. The site waste profile will be established using soil chemical data obtained during the pre-excavation investigation. Approximately 146 tons of soil will be removed from the site. Assuming each truck carries 18 tons, up to 9 trucks will be needed to transport the impacted soil, excluding additional soils excavated following confirmation sampling. Stantec estimates one day for soil excavation and removal activities. All permitted disposal facilities operate a certified weight station at their facility. As such, each truck will be weighed before off-loading its payload. Weight tickets or bills of lading will be provided to the removal action subcontractor after all the soil has been shipped off-site. The trucking route from the site to the receiving landfill, located approximately 7 miles to the east, is as follows: east on French Camp Road (5 miles), north on South Austin Road to the landfill (2 miles). The proposed trucking route is illustrated on Figure 4. Transportation of soils is expected to occur during the week(Monday through Friday) during typical business hours (8 AM to 5 PM). A flag person will be located at the site entrance and exit to assist the truck drivers in safely entering and leaving the site. Transportation will be coordinated in such a manner that at any given time, on-site trucks will be in communication with the site trucking coordinator. Prior to the off-site transport, the site manager will be responsible for inspecting each truck to ensure that the payloads are adequately covered, the trucks are cleaned of excess soil and properly placarded, and that the truck's manifest has been completed and signed by the generator(or its agent) and the transporter. As the trucks leave the site, the flag person will assist the truck drivers so that they can safely merge with traffic on East French Camp Road.