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30 August 2007 <br /> AGE-NC Project No. 07-1517 <br /> Page 6 of 7 <br /> The open excavation area will be backfilled with clean fill and crushed rock or pea gravel for future <br /> asphalt cover. <br /> When analytical data for the stockpiled soil has been procured from the laboratory and landfill <br /> acceptance are received, the soil will be loaded into end dump loaders for disposal at Forward <br /> Landfill or a Class I Landfill. <br /> 3.3. EXCAVATION SOIL SAMPLE COLLECTION AND ANALYSIS <br /> An estimated 24 soil samples will be collected from the excavation and will be submitted for <br /> laboratory analysis. Soil samples will be collected from the base and each side wall of the "new" <br /> excavation at a minimum interval of every 20 linear feet. Soil samples will be collected from the X <br /> base of the excavation at a minimum of one sample for every 500 square feet (25 by 25 feet) of <br /> excavation area,approximately four samples.However,additional sample may be collected base on <br /> the field indications. <br /> Soil samples collected from the base and sidewalls of the excavation will be obtained using a <br /> backhoe or shovel. Soil samples will be collected from the bucket of the excavating equipment by <br /> pressing a 3-inch long by 2-inch diameter brass sleeve into the excavated soil material using a metric <br /> soil sampling hammer.The exposed ends of the sample sleeve will be covered with Teflon sheets, <br /> capped and sealed with tape. <br /> Soil samples will be collected from soil stockpiles by digging approximately one foot into the soil <br /> stockpile.Soil samples will be collected pressing a brass sampling sleeve into the soil stockpile with <br /> a metric soil sampler. Selected soil samples will be analyzed by a State of California Department <br /> of Health Services (DHS)-certified laboratory for the following constituents: 54�b k , e, S�,r,P1c5 <br /> e� � <br /> • TPH-g/d/mo by EPA Method 8015 Modified/5030; n b�-ay c, P j <br /> Ic <br /> • BTEX and or VOCs by EPA Method 8020 or 8260/8010; and fCOS a <br /> � (P� <br /> • Metals by EPA Method Methods 200 (total threshold limit concentration: TTLC/ soluble <br /> threshold limit concentration: STLC lead), EPA 200 and Methods 1311 (TCLP-lead if <br /> Lea ywa ! <br /> required for disposal). ovr <br /> • Stockpile samples will be analyzed for Semi Volatile Compounds by EPA Method 8270, (00/0'd <br /> and may require HVOCs by EPA Method 8260/8010. <br /> Laboratory reports for soil analyses, testing methods, laboratory quality assurance/quality control <br /> (QA/QC) reports, and sample chain of custody documentation will be presented in a report with <br /> findings and recommendations. <br /> Advanced GeoEnvironmental,Inc. <br />