ECC INC

6 H St Ne, Washington, Dc 20002
Removal of four underground storage tanks during excavation activities for site redevelopment. Tank ids and estimated volume: 15-8 gal., 16-8 gal., 17-8 gal., 18-85 gal.

1711 Florida Ave Nw, Washington, Dc 20009
Removal of one 50-gallon, three 1,100-gallon, and two 550-gallon gasoline underground storage tanks encountered during excavation for site redevelopment activities.

15 Dupont Cir Nw, Washington, Dc 20036
Removal of one 2,0 gallon heating oil ust encountered during excavation for site redevelopment activities.

18 Half St Sw, Washington, Dc 20024
Installation of sixteen 3-inch diameter geoprobe soil borings to 25 feet below grade as part of environmental due diligence. Eight borings will be completed as temporary piezometers using 1-inch diameter schedule pvc pipe. Borings will be grouted shut on the same day as drilling in accordance with doee-wqd regulations. Idw will be characterized and properly managed.

33 N St Ne, Washington, Dc 20002
Installation of ten 3-inch diameter geoprobe soil borings for delineation of residual-phase contamination. Soil borings will be installed to depths of 35 feet below grade. All soil borings will be grouted shut on the same day as drilling in accordance with doee-wqd regulations. Idw will be characterized and properly managed.

12 4th St Ne, Washington, Dc 20002
Installation of eight 3-inch diameter geoprobe soil borings to 35 feet below grade as part of environmental due diligence. Four borings will be completed as temporary piezometers using 1-inch diameter schedule pvc. Borings will be properly grouted shut on the same day as drilling in accordance with doee-wqd regulations. Idw will be characterized and properly managed.

15 Dupont Cir Nw, Washington, Dc 20036
Removal of one 1,0 gallon heating oil ust encountered during excavation for site redevelopment activities. Related permits b1505543, b16000062

28 Sherman Ave Nw, Washington, Dc 20001
Comprehensive site assessment as part of dc lust 2015-026. Installation of six 8-inch diameter soil borings, using 4. 25-inch inner diameter hollow-stem augers, to depths of feet below grade. Three borings, mw-1 through mw-3, will be completed as 2-inch diameter monitoring wells using scheduled tri-lock pvc casing and 0. 020-inch slotted tri-lock screen. Geotechnical borings gsi-101 through gsi-103 shall be grouted shut on the same day as drilling in accordance with doee-wod regulations. Idw will be characterized and properly managed.

25 Potomac Ave Se, Washington, Dc 20003
Removal of one 100-gallon underground storage tank during mass excavation activities for site redevelopment.

3921 Kansas Ave Nw, Washington, Dc 20011
Installation of three 2-inch diameter monitoring wells to depths of feet below grade using a 4. 25-inch hollow stem auger drill rig. The wells are being installed in accordance with a directive letter for lust case 2014-016.

965 Florida Ave Nw, Washington, Dc 20001
Installation of fourteen 3-inch diameter geoprobe soil borings for environmental due diligence. Borings will be installed to depths of 25 feet below grade.

501 I St Sw, Washington, Dc 20024
Installation of eight 3-inch diameter direct-push geoprobe soil borings around the perimeter of the structure to depths of approximately feet below grade.

1 Florida Ave Ne, Washington, Dc 20002
Installation of eight 3-inch diameter direct-push geoprobe soil borings on the property to depths of approximatley 25 feet.

6 H St Ne, Washington, Dc 20002
Removal of two 300-gallon, one 500-gallon, and two 1,500-gallon underground storage tanks during excavation activities for site redevelopment.

401 15th St Se, Washington, Dc 20003
Installation of 6 to 8 soil borings to estimated depths of to 35 feet below ground surface for assessment of soil and groundwater quality.

624 H St Ne, Washington, Dc 20002
Installation of up to 15 soil borings to estimated depths of feet below ground surface for assessment of soil and groundwater quality.

401 15th St Se, Washington, Dc 20003
Installation of three 3. 25-inch hollow stem auger soil borings to depths of 35 feet below grade.

401 15th St Se, Washington, Dc 20003
Installation of two 3. 00-inch geoprobe soil borings to depths of 35 feet below grade.

13 H St Ne, Washington, Dc 20002
Installation of five 3. 25-inch hollow stem augur soil borings to depths of feet below grade.

2501 14th St Ne, Washington, Dc 20018
Installation of four direct-push geoprobe soil borings to depths of feet below ground surface for the purpose of collection of soil and groundwater samples.

1318 Saratoga Ave Ne, Washington, Dc 20018
Installation of four direct-push geoprobe soil borings to depths of feet below ground suface for the purpose of collection of soil and groundwater samples.

2009 8th St Nw, Washington, Dc 20001
Due diligence investigation. Installation of nine 3-inch diameter geoprobe direct-push soil borings to depths of feet below grade. Five of the borings will be completed as temporary piezometers using 1-inch diameter pvc pipe. Borings/temporary piezometers will be open no longer than 24 hours and will be abandoned on the same day as drilling by tremi-grouting, using a 2 pounds bentonite to 1 gallon of water slurry, per doee regulations. Idw will be properly managed.

1734 14th St Nw, Washington, Dc 20009
Due diligence installation of two, 6 inch diamter hsa soil borings for geotechnical and environmental due diligence to a depth of feet.

1728 14th St Nw, Washington, Dc 20009
Due dilience installation of four, 6 inch diameter hsa soil borings for geotechnical and envirnmental due diligence to a depth of 65 feet.

303 H St Ne, Washington, Dc 20002
Due diligence installation of four, 6 inch diameter soil borings for geotechnical and environmental due diligence to a depth of 65 feet.