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S E C 0 R -- - -- Ms. Devra Lewis April 15, 2004 Page 6 • Soil Excavation • Soil Sample Collection and Analysis. • Soil Pre-Characterization. • Soil Disposal. • Backfill of Excavations. • Surveying. • Report Specific scopes of work are discussed below. Site Health and Safety. As required by the Occupational Health and Safety Administration (OSHA) Standard "Hazardous Waste Operations and Emergency Response" guidelines (29 CFR 1910.120), and by California Occupational Health and Safety Administration (Cal-OSHA) "Hazardous Waste Operations and Emergency Response" guidelines (CCR Title 8, Section 5192), SECOR will prepare a Site-Specific Health and Safety Plan prior to the commencement of fieldwork. The Site-Specific Health and Safety Plan will be reviewed by the field staff and contractors before beginning field operations at the site. Utility Clearance and Notification. Excavation locations will be staked out and marked with white paint and Underground Service Alert (USA) will be notified at least 48 hours prior to excavation to avoid interference with active utilities. Additionally, a private utility locating service will be contracted to search for active utilities prior to excavating. Public notification for work at Delta Gateway Apartments will be sent out prior to excavation activities and the Regional Water Quality Control Board (RWQCB) and the Department of Toxic Substance Control (DTSC) will be notified of the scheduled work 48 hours prior to excavating. Access Agreements and Permitting. Access agreements to perform the excavations will be secured with the City of Stockton Redevelopment Agency, Delta Gateway Apartments, and the Waterfront Towers prior to the beginning of work. Permits will be obtained from the City of Stockton Fire Department for the removal and abandonment of the pipelines. Site Security and Dust Control. Temporary chain-link fencing will be installed around the Parcel 2A property. The fencing will have barbed or razor wire on the top and will be slatted or have tarps connected to the sides to prevent dust migration. Additionally, a water truck may be used for dust suppression. The fence will be locked when work is not preformed at the site. Work in the parking lot of the Waterfront Towers will be preformed on Sundays, the only day of the week that the parking lot is not in use. Pipeline Excavating and Removal on Parcel 2A Property. Pipelines discovered during the ,December 2003 underground utility search and any new pipelines discovered will be exposed using a backhoe tractor operated by a licensed operator. After the pipelines are exposed, the pipelines will be cut (where they cross West Weber Avenue, trend beneath buildings or at the Parcel 2A property line) and three to five foot sections will be removed. The three to five foot sections will be cut using a reciprocating saw so that the ends will be open for rinsing of the pipes. The reciprocating saw will be grounded on both sides of the pipe to prevent sparks. Prior to cutting the sections, a small bleeder hole will be drilled into the bottom of the pipe to determine if any residual product is present and to record lower explosive limits (LEL) and oxygen (02) levels within the pipelines. The reciprocating Stockton Parcel 2A:Work Plan for Pipeline Abandonment,Removal,and Soil Excavation and SVE Well Install