Drilling activities include installation of two wells, eight inches diameter, to approximately 45-57 feet below surface using hollow stem augers. Injection of sodium persulfate into the two wells to treat groundwater contamination, which consist of petroleum constituents. These activities are being performed in accordance with corrective action plan -november 2013- approved by the district of columbia department of the environmental, as per sit plans, work plans report, dc well construction and schematic forms. All work will be performed under ddoe regulation.

Misscelaneous permit for sediment control only.

Drilling activities include installation of two wells, eight inches diameter, to approximately 45-57 feet below surface using hollow stem augers. Injection of sodium persulfate into the two wells to treat groundwater contamination, which consist of petroleum constituents. These activities are being performed in accordance with corrective action plan -november 2013- approved by the district of columbia department of the environmental, as per sit plans, work plans report, dc well construction and schematic forms. All work will be performed under ddoe regulation.

Misscelaneous permit for sediment control only.

Drilling activities include installation of two wells, eight inches diameter, to approximately 45-57 feet below surface using hollow stem augers. Injection of sodium persulfate into the two wells to treat groundwater contamination, which consist of petroleum constituents. These activities are being performed in accordance with corrective action plan -november 2013- approved by the district of columbia department of the environmental, as per sit plans, work plans report, dc well construction and schematic forms. All work will be performed under ddoe regulation.

Furnish and install 4 new catch basins and associated storm drain pipe in parking lot.

Advancement of one (1) soil boring down to bedrock depth (approximately 48 feet bgs) and installing a monitoring well in the soil boring. The soil boring diameter will be 4. 25 inches and the drilling method is dual hollow-stem auger (has) and direct push technology (dtp). Soil samples collect in acetate liners from dpt drilling will be sent to the laboratory for analysis of vocs. After the monitoring well is installed and developed, a groundwater sample will be collected from the well and sent to the laboratory for analysis of vocs. Soil cuttings generate during the soil boring drilling will be sent to a different laboratory to perform a bench-scale test. Additional groundwater purged from the newly installed monitoring well will be sent to the bench-scale testing laboratory. No chemical injection will be conducted during the initial phase of this work.

After hours 7pm - 5am 5/21-5/23