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• The lithology, moisture, density, color, sample identification, PID measurements, and well construction details were recorded on the boring log as appropriate • The screened interval was constructed from 30 to 35 feet bgs to discretely screen the • lower section of the aquifer To prevent bridging, a uniform filter pack of#2/12 sand was slowly installed from the bottom of the boring to a depth of 1 foot above the top of the well screen ' A clean, weighted tape measure was used to ensure proper placement of the sand and that sand stayed in the auger • All wells were constructed using FVC flush thread casing and sandpack Construction ' details were documented on the boring log • A 2-foot thick seal of clay was installed above the sand pack and tremie grouted with a cement/bentonite slurry not exceeding 5 percent bentonite to 1 foot below the ' ground surface The top of the PVC casing was approximately 2 inches below grade Well heads were protected by flush-to-grade traffic rated well boxes A slip cap was placed over the top of the casing ' The well was protected by 8-inch flush-mounted traffic box set in concrete, with a locking well cap The top of the traffic box was set above grade with a gently sloping concrete rim The monitoring well identification number was scribed into the concrete ' rim before it completely set Upon completion of the well installation, the well was closed and secured by replacing the well cap, securing the lock and bolting down the lid of the flush- mounted traffic box 4. Equipment Required • Limited Access Hollow Stem Auger Drill Rig • Level D Safety Equipment • Boring Log form 1 Munsell Soil Charts • Sample containers - provided by the laboratory ' Sample labels/Indelible marker Disposal gloves • Ice chest with ice ' ASTM Classification Guide i I 2of2