Installation of six soil boring 2 inch diameter by feet deep max. Mobilize a drilling to advance soil boring for collection of soil ground water sample of investigation sub surface release of petroleom tiydrocarbons as per work plan report and attached riles.

Dccr proposes two geotechnical borings, nebbc-06 and nebbc-07, located at the government of the district of columbias, vehicle maintenance complex at 1905 west virginia ave. Ne. The borings will be 6 inches diameter and nebbc-06 will be153 feet deep and nebbc-07 will be 154 feet deep. A permanent steel outer casing will be installed and socketed feet into the potomac clay. See idw management plan and attached schematics for additional information. A monitoring well with a vibrating wire piezometer will be installed in both borings upon well completion.

Dccr proposes one geotechnical boring, nebbc-03, located at the government of the district of columbias, vehicle maintenance complex at 1905 west virginia ave. Ne. The boring will be 6 inches diameter and 177 feet deep. A monitoring well will be installed at 1 feet below ground surface. A vibrating wire piezometer will be installed at approximately feet below ground surface. Foot screened interval will allow for greater representation of site characteristics. The boring will be drilled using mud rotary or hollow stem auger methods, msds for drilling mud additives attached. See idw management plan and attached schematics for additional information. Well development will be by air-lift and surge-block methods. Development water will be drummed for appropriate off-site disposal.