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how 4. EQUIPMENT REQUIRED • Well Installation permit, Access Agreements, and other permits as needed • Copy of approved Workplan with site Safety Plan included • Minimum Level D personal protective equipment • Downhole sampler with brass or stainless steel liners, Teflon sheeting, and end caps • Photoionization detector(PID)/sealable plastic storage bags • Boring Log form/Munsell color charts/ASTM D 2488-09 Standard Practice for Description and Identification of Soils (Visual-Manual Procedure) • Sample containers -provided by the laboratory OR • EnCore®Sampling kit and soil cartridge containers • Sample labels/Indelible marker/Chain of Custody forms • Disposable gloves • Ice chest with ice 5. PROCEDURE GHD will obtain all permits to perform drilling work unless contractually directed otherwise. GHD will prepare a site Safety and Health Plan detailing project hazards and controls, personnel decontamination, and emergency response procedures. At least 48 hours before drilling, GHD personnel will contact Underground Services Alert(USA), or similar utility location service, to have subsurface utilities located and marked within the work area previously delineated with white paint. In order to ensure that the locations of subsurface utilities are known, GHD may perform a site inspection, contact individuals familiar with the work site, review as- built drawings, and may employ a private utility locator. When subsurface utilities are suspected, the first five feet of each boring will be advanced using a hand auger or posthole digger. All monitoring wells are installed using a truck-mounted hollow-stem auger drill rig, unless site conditions require a different drilling method. All drilling equipment will be maintained and inspected daily. A drill rig kill switch mechanism will be operational and within reach of anyone working near the drill. All down-hole drilling equipment will be cleaned and decontaminated prior to arriving at the site. Working components of the drill rig, drill stems, and augers are steam cleaned between monitoring well locations. Whenever possible, the first boring will be sampled to provide a continuous core to obtain a complete lithologic section of the boring. In subsequent borings, soil samples will be collected at approximately five-foot intervals to the total depth explored. Soil samples may also be collected from differing Iithologies or areas of obvious contamination. Samples will be collected using a California-modified split spoon sampler driven 18 to 24 inches into native material beyond the auger bit. The split spoon will be driven using a 140-pound hammer dropped from 30 inches. The number of blow counts required to drive the sampler each six-inch interval and the volume of soil recovered will be recorded on the well log. If copper or zinc contamination is being investigated, stainless steel liners will be used in lieu of brass. Metal soil sample tubes selected for laboratory analysis will be covered on both ends with Teflon tape and sealed with plastic end caps. Samples will be labeled, recorded using Chain of Custody GHD SOP MW Install& Dev 2 of 6 Rev 2/14