This supplemental permit was issued online. Use the online permit view application on dcra intranet to view the details and print a copy of the permit. Alternatively, you can copy and paste the following url into an internet browser. Https:/ospi. Dcra. Dc. Gov/ospi/printpermit. Aspx? Param=zi8iggjeilfn1cc27tjufiar487lljpe

Dc clean rivers anacostia river tunnel cso 019 construction staging area site civil work. General land disturbance, sediment erosion control, clear and grub, grading and stabilization.

Dc water clean rivers project - anacostia river tunnel cso 019 site civil work for temporary construction trailers. Sediment erosion control measures, site stabilization.

This supplemental permit was issued online. Use the online permit view application on dcra intranet to view the details and print a copy of the permit. Alternatively, you can copy and paste the following url into an internet browser. Https:/ospi. Dcra. Dc. Gov/ospi/printpermit. Aspx? Param=zi8iggjeilfn1cc27tjufnbc0ilcpdxd

Hand auger 8 borings up to feet below the ground surface for environmental sampling. Diameter of borehole will be 4 inches.

Dc clean rivers anacostia river tunnel cso 019 construction staging area site civil work. General land disturbance, sediment erosion control, clear and grub, grading and stabilization.

Dc water clean rivers project - anacostia river tunnel cso 019 site civil work for temporary construction trailers. Sediment erosion control measures, site stabilization.

Soil boring for ground monitoring instrumentation for dc waters anacostia river tunnel project.

Soil boring for dewatering activities at cso-019 of dc waters anacostia river tunnel project. 28 mud rotary borings: 12 dewatering wells at 195 feet deep, 8 inches internal diameter; 4 monitoring wells at 132 feet deep, 2 inches internal diameter. 12 contingency wells.

Temporary construction trailers for dc waters anacostia river tunnel project. Six trailers total: two single-wide, three double-wide, one triple-wide. Soil erosion control ? Site work already approved, permit # bciv1400011 ( trailers to be removed by 10-1-17)

Dc clean rivers project, division n, lid retrofit entails the installation of green roofs and storm water retention features at existing dc water facilities.

Hand auger 8 borings up to feet below the ground surface for environmental sampling. Diameter of borehole will be 4 inches.

Soil boring for shallow dewatering system for excavation of near surface structures at cso 019 site of dc waters clean rivers div h project. Up to 18 borings of 8 inch diameter, drilled to feet bgs. Mud rotary drilling method.

Jet grouting for ground stabilization at cso 019 site of dc waters clean rivers div h project. Max 2 boreholes of 8 inch diameter, for grout injection. Depth = 1 feet bgs.

Soil boring for ground characterization at cso 019 site of dc water clean rivers div h project. Fifteen borings to approx. El -70. Sonic borings 6 inches diameter. Borings will be identical in means and methods to borings permitted under sb 1500178.

Extension of bciv1300043 - sitework permit for cso 19 site northeast boundary tunnel - division j.

Dc clean rivers anacostia river tunnel project cso 019 support of excavation. Slurry wall soe for excavation of two shafts 117 feet deep from surface, 69 feet 4 inch inside diameter. Slurry wall construction will be 36 inch thick 50 psi reinforced concrete. Ground disturbance and cut/fill volume previously approved under permit bciv1300043.

This supplemental permit was issued online. Use the online permit view application on dcra intranet to view the details and print a copy of the permit. Alternatively, you can copy and paste the following url into an internet browser. Https:/ospi. Dcra. Dc. Gov/ospi/printpermit. Aspx? Param=zi8iggjeilfn1cc27tjufnbc0ilcpdxd

This supplemental permit was issued online. Use the online permit view application on dcra intranet to view the details and print a copy of the permit. Alternatively, you can copy and paste the following url into an internet browser. Https:/ospi. Dcra. Dc. Gov/ospi/printpermit. Aspx? Param=zi8iggjeilfn1cc27tjufiar487lljpe

Support of excavation for near surface work at cso 019 site of dc waters clean rivers div h project. Soe system will consist of sheet piles, walers and struts, tie-rods and tieback anchors. Soe will be installed in 4 phases: 1- temp. Bypass channel, 2- nebts diversion structure, 3- approach channel, 4- overflow structure connections. Civil site work, ddoe erosion control/stormwater management already approved under permit bciv1300043.

Revision to permit sb1400046. Revised per letter, plan, and schematic submitted to ddoe on 02/18/2015.

Dccr proposes to drill two geotechnical borings (nebbc-66 and nebbc-67 located at 26 independence ave se. The boring will be 6 inches in diameter and 75 feet bgs, drilled by hollow-stem auger. Permanent casing will be socketed feet into the p/a formation and grouted before continued drilling. The boring will not extend into the ptx. See idw management plan and attached schematics for additional information. All drilling generated waste will be drummed (solids and liquids). Refer to the division j edr and gdr for additional environmental and geotechnical information. The well shall be covered and protected from surface water drainage and the vertical migration of contaminants and other materials through the well casing and well annulus.

Near surface structures for dc water clean rivers project div h - cso 019 site. Construction of intake/ventilation chambers, approach channel and odor control venting facility, and connection to overflow structure. All construction is below-grade sewerage. Sheeting & shoring permit b1506965. Erosion control & stormwater management permitted under bciv1300043.