DMY ENGINEERING

719 18th St Ne, Washington, Dc 20002
A total of three soil test borings will be drilled at the above referenced site for our subsurface exploration. The borings will be drilled using 2. 25-inch continuous flight augers. One of the boring will extend to a maximum depth of feet below current site grades. The borings will be drilled using a truck-mounted drill rig. We anticipate that the maximum annular diameter of the holes from the field exploration including the auger flights will be about 6-inches. The soil sampling interval will be every 2. 5 feet within the upper feet of the borings, followed by every 5 feet to the maximum depth explored. The samples will be containerized in glass jars for geotechnical classification and laboratory testing. Upon completion of the subsurface exploration, the borings will be tremie-grouted with a bentonite grout in one continuous operation from the bottom of the well upward. The bentonite will be a mix of two pounds of bentonite powder per gallon of water. No additional additives besides p

3831 Georgia Ave Nw, Washington, Dc 20011
A total of three 6-inch diameter soil test borings will be drilled using 2. 25-inch continuous hollow stem flight augers. The borings will extend to a maximum depth of feet below current site grades using a truck-mounted drill rig. The samples will be containerized in glass jars for geotechnical classification and laboratory testing. After boring completion the boreholes will be grouted with bentonite slurry, 2 lbs of bentonite to 1 gallon of water, and the auger cuttings and all other investigation derived waste idw will be containerized in sealed drums per ddoe permit. If a confining unit is encountered, we shall use outer casings which shall extend ten feet into the top of the confining unit in unconsolidated sediments or to the top of bedrock, if bedrock is encountered first. This will prevent contamination migration to the groundwater table. (all boring inside property line)