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1 <br /> • File No 93342-WP Page 2 <br /> DRILLING, WELL CONSTRUCTION, AND SAMPLING PROTOCOLS FOR <br /> MONITORING WELL INSTALLATION <br /> Drilling Protocol <br /> 1- Advance Soil Technology, Inc will acquire the proper permit to drill all proposed wells <br /> 2- All borings will be drilled dry by hollow -stem, continuous flight auger All augers and <br /> drill rods will initially be thoroughly steam-cleaned before arriving on-site, to prevent the <br /> introduction of contaminants from off-site, and will again be steam-cleaned between <br /> borings away from boring locations Working components of the drilling rig will also be <br /> steam-cleaned Cleaned augers, rods, and other tools will be stored and covered when <br /> not in use, if required <br /> 3- The subsurface stratigraphy and aquifer characteristics will be established by examining <br /> the earth materials brought to the surface by the drilling operations, and by the sampling <br /> of undisturbed soils every five feet, or as otherwise specified Detailed boring logs will <br /> be maintained of the soil materials showing texture, color, moisture content, consistency, <br /> and plasticity, and any unusual characteristics noted <br /> 4- The exact depth of all borings to 0 5 foot will be determined in the field <br /> Soil sampling <br /> 1- Soil samples will be taken every five feet, or as otherwise specified, with a California <br /> Modified split-spoon sample driven 18 inches into the undisturbed soil The number of <br /> blows necessary to drive the sampler, or the pressure necessary to push the sampler into <br /> the ground, will be used to help evaluate the consistency of the materials encountered <br /> 2- The soil sampler and brass liners will be cleaned with Alconox solution, rinsed with clean <br /> tap water, and air-dried prior to each sampling <br /> 3- Soil removed from the top two liners and the end cone will be used for logging purposes <br /> and disposed of with cuttings removed during drilling operations The bottom liner will <br /> be saved for potential laboratory analysis <br /> 4- Soil samples retrieved for laboratory analyses will be labeled and sealed in the field in <br /> the brass liners Aluminum foil will be placed on the ends of the liners, followed by <br /> plastic caps Liners will then be sealed with tape The samples will then be stored and <br /> transported on blue ice or dry ice in a designated cooler under chain-of-custody to a <br /> state-certified laboratory <br /> ADVANCE SOIL TECHNOLOGY, INC <br />