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Project No 034-98081 <br /> Appendix B <br /> Sampling was conducted by means of a split-spoon "Modified California Sampler" <br /> containing three six-inch long by two-inch diameter brass sleeves Sample handling and <br />' analysis was conducted using the methods stated earlier <br /> • Drill cuttings (soil) were temporarily placed on and covered by visquene Detailed field <br /> records were developed to document the source and volume of the drill cuttings H&H <br /> Engineering is the generator of these investigation-derived waste materials and is <br /> responsible for their proper disposal <br /> • Equipment used for the advancing of soil borings and the sampling of soils were <br /> decontaminated (steam-cleaned, TSP, lab-grade detergents, etc ) before arriving on-site, <br /> between each boring and/or sampling, and before leaving the site each day, or as <br /> necessary to reduce the chances of cross-contamination The decontamination fluids <br /> (ansate) were temporarily contained in DOT-approved steel 55-gallon sealable drums <br />' Krazan is not the generator of these investigation derived waste materials and is not <br /> responsible for their proper disposal <br /> • A well head elevation survey was conducted to provide surveyed measuring point <br /> elevations used to assess the elevations of the water table in the wells The survey was <br /> performed by a licensed land surveyor The horizontal well locations are accurate to one <br /> foot The vertical measuring point elevations are accurate to 0 01 foot Depth to <br /> groundwater, and the corresponding water table elevations, were obtained and <br /> incorporated in the report <br /> o The monitoring wells were developed using a vented surge block and a bailer The <br /> development was conducted until the well was producing relatively sand-free, clear <br /> groundwater Groundwater generated during well development was temporarily stored <br /> in DOT-approved steel 55-gallon drums The handling and storage of well development <br /> water was conducted in accordance with the procedures desci ibed above for <br /> decontamination fluids <br /> • Groundwater samples were collected from the three wells no more than 48 hours <br /> following well development Groundwater samples were collected, contained, preserved, <br /> and transported using guidelines presented in the LUFT Field Manua[ Groundwater <br /> samples were analyzed for BTEX, TPH-G, and fuel oxygenates using the analytical <br /> methods stated in the report Prior to sample collection, the potential presence of free <br /> ' floating product was assessed using a clear polypropylene or Teflon bailer <br /> • Prior to collecting a groundwater sample, a minimum of three well volumes were <br /> purged from the wells Once pH, electrical conductivity (EC),and temperature stabilized <br /> between two purge volumes, the well was sampled Purging and sampling was <br /> conducted using a sampling pump and/or a PVC bailer and disposable polypropylene <br /> bailers, respectively Purge water was temporarily stored on-site in DOT-approved steel <br /> 55-gallon drums The handling and storage of the purge water was conducted in <br /> accordance with the procedures described above for decontamination fluids and well <br /> development water <br /> 1 <br /> KRAZAN& ASSOCIATES, INC <br /> Ten Offices Serving the Western United States <br /> 3498481 SG2 <br />