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WORK PLAN POTENTIALLY CONTAMINATED SOILS EL RANCHO ROCK & SAND, INC. QUARRY RECLAMATION PAGE 4 3.3 Field Screening -- Field screening of the potentially contaminated soil will be conducted to assist in evaluating the limits of any potential contamination, for any "Type 1 Contamination" encountered. Screening methods will consist of: • Visual inspection for evidence of hydrocarbon or other staining. • Head space analyses using field detection equipment (Organic Vapor Analyzer OVA-FID and/or PID) and/or Drager Tubes. Calibration records will be maintained for all field screening equipment. Detailed field notes and records will be maintained. Photographs and videotape logs will be maintained. 3.4 Sampling and Excavation Samples will be collected from those areas of potential "Type 1 Contamination" which indicate the highest field screening results. These samples will be collected and prepared for immediate laboratory analysis, to determine if actual contamination exists, i.e., if the sample collected can be classified as a hazardous waste or hazardous material as defined by California law. While awaiting return of sample results, the contaminated soil will be covered, and left in-situ protected from volatilization. Results of the preliminary characterization, along with Condor's specific recommendations on how to proceed, will be submitted to the Department of Environmental Health. Further sampling, excavation, stockpiling or disposal related to "Type 1 Contamination" will not proceed without approval of the Department of Environmental Health. It is anticipated, however, that the following procedures will apply= If the material is classified as hazardous, it will be treated as such. Field scr Bening will be used to define the limits of soil contamination. The contaminated soil will be excavated, stockpiled, covered, and protected from volatilization. Soil samples will be collected from the floor and/or sidewalls of — the excavation for laboratory analysis. These samples will be used to verify that potentially contaminated soils do not extent beyond the limits of the excavation. �- The number of soil samples collected from each excavation will depend on the overall size of the excavation. The samples will be collected in clean brass tubes, capped, sealed with Teflon tape, wrapped with duct tape, labeled, and — immediately place in a cooler chilled with "blue ice", for delivery under Chain- of-Custody procedure to GeoAnalytical Laboratories in Modesto, California.