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i� <br /> A-s <br /> ` 4.1 Buried Utility Locations <br /> f <br /> Prior to commencement of work on site, AMV will contact appropriate utility companies to have <br /> underground utility lines located. All work associated with the borings will be preceded by hand <br /> augering to a minimum depth of 5 feet below grade to avoid contact with underground utilities. <br /> i <br /> 4.2 Lithologic Logging <br /> A log of soil conditions encountered during the drilling and.,sample collection (Enclosure A) will <br /> be maintained using the Unified Soil Classification System (Enclo1sure B) by an AM V geologist. <br /> All boring logs will be reviewed by a California registered geologist. <br /> P <br /> The collected soil samples will be examined and the following information recorded: boring <br /> location, sample interval and depth, blow counts, color, soi11 type,lmoisture content (qualitative), <br /> and depth at which ground water (if present) is first encountered. Also recorded on the soil <br /> boring logs will be the field screening results derived from the use of a portable PID or FID. <br /> lk ;r <br /> 4.3 Disposal Procedures <br /> i <br /> { Soils and fluids that are produced and/or used during the installation and sampling of borings, <br /> and that are known or suspected to contain potentially hazardous materials, will be contained <br /> during the above operations. These substances will be retained on:, site until chemical testing has <br /> been completed to determine the proper means of disposal. 1Handling and disposal of substances <br /> known or suspected to contain potentially hazardous materials will comply with the applicable <br /> regulations of Cal-EPA, the California Department of Water Resources, and any other applicable <br /> regulations. Soils and fluids produced and/or used during'�tthe above-described operations that <br /> appear to contain potentially hazardous materials will be disposed of appropriately. <br /> Residual substances generated during cleaning procedures that are known or suspected to pose <br /> a threat to human health or the environment will be placed in appropriate containers until <br /> chemical testing has been completed to determine the proper means for their disposal. <br /> 4.4 Conductivity, Temperature, and pH <br /> It ,. <br /> Specific conductance, water temperature, and pH measurements will be made when a water <br /> sample is collected. Regardless of the sample collection method, a representative water sample <br /> will be placed in a transfer bottle used solely for field parameter determinations. A conventional <br /> pH meter with a combination electrode or equivalent will be used'Cfor field-specific conductance <br /> measurements. Temperature measurements will be performed using standard thermometers or <br /> equivalent temperature meters. Combination instruments capable I,of measuring two or all three <br /> of the parameters may also be used, j? <br /> s <br /> LP PT00$.MAF <br /> i <br /> k <br /> 4F I <br />