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SECTION 3 SUMMARY OF CONSTRUCTION WORK SCOPE OF WORK This work plan has been designed to address the work associated with the excavation of the soils to accommodate the foundation caissons as well as other trenching or digging which may go through or excavate impacted groundwater or soils This plan focuses on the anticipated actions by the contractor when soils and groundwater impacted by petroleum hydrocarbons are encountered USA ALERT The subcontractor of F&H Construction has reportedly notified USA Alert ESTABLISHMENT OF WORK ZONE A work zone shall be established around the entire site The entire site should be enclosed by a temporary construction fence The general public will be restricted from entering the site by the fence and/or by requesting people not directly involved in the work to stay out of the immediate work area EXCAVATION AND/OR AUGER DRILLING The site will be field marked by F&H Construction or its subcontractors The contractor has scheduled the installation of approximately 10 caissons per day SOIL SCREENING During the drilling of th uger piles, the bit chaser or helper and the industrial hygiene representative will visually he excavated soils for the presence of stains or odors As previously dt5 g stated in this plan,impacted soils are not expected until a depth of approxmiately25 feet is reached y Any odors or discoloration will trigger further testing as necessary by the industrial-hygienist Further testing will be performed by an organic vapor analyzer (OVA) or specific gasoline - constituent testing using Drager tubes Soils which appear to be impacted by petroleum hydrocarbons due to the traditional green or gray staining, but do not exhibit the characteristic petroleum hydrocarbon odors, may be deemed uncontaminated only if negative readings are achieved from an Organic Vapor Analyzer(OVA) — n In the event that slightly potentially contaminated soils are believed to exist, the soil can be considered non-contaminated only if there are negative readings from the OVA taken within 3 inches of freshly dug soil on 3 foot centers around the entire pile or bucket TEMPORARY SOIL SEGREGATION i Soil materials removed from the excavation considered potentially contaminated or knovAto be contaminated shall be segregated into one or more stockpiles onsite The temporary soil stockpiles shall be prepared by the placement of 10 mil plastic sheeting on the site directly beneath the stockpiled caisson spoils,or placed directly in plastic lined rolloff containers or dump trucks • Health and Safety Plan for F&H Construction 130 North Hunter St, Stockton, CA P.- r