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1 <br /> page 2 <br /> sn*lmg Metbods <br /> 1 Drill ng augers. drill rods, and drill bits grill be swam--leaned prior to use and between <br /> borings Visible soil, grease, and other unptmties Will be removed <br /> 2 Soil sampling equipment wait be steam-cleaned prior to use and between each borMg <br /> Prior to individual sample collection, any sampling device will also be cleaned in a TSP <br /> solution and rinsed twice in clean water Any visible soil residue will be removed. <br /> 3 It is anticipated that disposable equipment will be used to collect water decontaminatediples, f <br /> disposable equipment is not used, water sampling egtupment will <br /> using methods described in item 2 above for soil sampling equipment <br /> 4 Water sampling containers will be cleaned and prepared by the respective analytical <br /> laboratories <br /> g stainless steel or brass soil sampling tubes will be steam-cleaned or washed in TSP <br /> solution and rinsed wit, clean water <br /> 6 Field monitonng equipment(pH, conductivity, or temperature probes) will be rinsed <br /> with clean water prior to use and between samples <br /> C. FIELD MEASUREMENTS <br /> Field data will be collected during various sampling and monitoring activities, this section describes <br /> routine procedures to be followed by personnel performing field u=surements The methods presented <br /> below are intended to ensure that field measurements are consistent and reproducible when performed by <br /> various personnel <br /> C 11 Busied Utility Locations <br /> Prior to con=ricen�nt of work on site, Doulos will contact appropriate utility companies to have <br /> underground utility lines located Doulos will also visually survey the site to estimate the locations of <br /> poteatially unmarked uadergroLnd utilities All work associated with theborer sll be preceded by <br /> hand augenng to a minimum depth of S feet below grade to avoid damaging underground <br /> libes <br /> C 2 Lithologic Logging <br /> A log of soil conditions encountered during the drilling and sample collection will be maintained using the <br /> Unified Soil Classification System by a Doulos geologist A California registered geologist will review <br /> all boring logs <br /> The collected soil samples will be examined and the following information recorded boringcati8n, <br /> sample uuerval and depth, blow counts, color, soil type, moisture content(qualitative), w depth pth <br /> which ground water(if present)is first encountered Also recorded on the soil boring logs will be the <br /> field screening results derived from the use of a portable PID or FID <br /> C.3 Disposal Procedures <br /> Soils and fluids that are produced andior used during the installation and samplmg of borings. and that are <br /> known or suspected to coni=potentially hazardous inatenals, will be contained during the abo,.e <br /> operations These substances will be retained on site until chemical testing lies been completed to <br /> determine the proper means of disposal Handl and disposal f cubes °regul �DHS,or pect the Califorsua <br /> ed to <br /> contain potentially hazardous materials wi.1 ca 1 with die app <br /> Department of Water Resources, and any other applicable regulations Soils and fluids produced and/or <br />