J-1503050-11(a) Washington SWD Systems Inventory.xlsx

XLSX spreadsheet 26 KB Posted Feb 11, 2026

Attached to: Regional Grounds Maintenance and Landscaping Services
Solicitation number: N4008025R4580
Issued by: Department of the Navy Naval Facilities Engineering Command

About this file

Written by GovTribe AI · Feb 11, 2026

This is a Storm Water Drainage Systems Inventory spreadsheet documenting the stormwater management infrastructure maintained by Public Works Department (PWD) across Naval District Washington installations. The inventory catalogs storm drainage systems at two primary locations: Carderock and Washington Navy Yard (WNY), organized by PWD-supported commands and facilities.

The Carderock inventory encompasses 53 outfall/drainage system entries, ranging in size from 0.49 to 52 acres, covering open fields, roads, parking lots, roof/rain leaders, and specialized discharge points such as Navy research basins and non-contact cooling water systems. Notable systems include CAR 002 (52 acres, serving multiple buildings with authorized research basin discharges), CAR 014 (7 acres, including a 5,676-square-foot stormwater retention pond), and CAR 011 (0.99 acres, designed to drain a 2,000,000-gallon water tank). The WNY inventory lists 44 green infrastructure and stormwater management features totaling approximately 28,475 square feet, including permeable pavement systems (ranging from 50 to 3,370 square feet), bioretention areas, rain gardens, planter boxes, tree boxes, and rain barrels located throughout various building parcels and parking areas. All entries reference Specification 3.3 for Storm Drainage Systems and cross-reference additional detailed documentation (J-1503050-13(a5) and J-1503050-13(a4)). This inventory supports the solicitation N40080-24-R4580 for Regional Grounds Maintenance and Landscaping Services administered by NAVFAC Washington.

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PWD WASH Master SWD Inventory

PWD	Supported Command	Building/ Parcel	Location /Description	Service Level	Spec. Item	Service	UOM	Qty	Size	Notes
WASH	Carderock	CAR 001	Open fields, roads, parking lots and rain leaders from Buildings 4 and 4E.	Per Spec	3.3	Storm Drainage Systems	AC	9		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	CAR 002	Open fields, roads, parking lots and rain leaders from numerous buildings. This outfall typically has flow due to groundwater inflows and is also authorized to discharge water from Navy research basins and non-contact cooling water. Outfalls 025-028 drain into the 002 system.	Per Spec	3.3	Storm Drainage Systems	AC	52		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	CAR 003	Rain leaders on the south and west side of Building 18. This outfall is also authorized to discharge Navy research basin water.	Per Spec	3.3	Storm Drainage Systems	AC	5		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	CAR 004	Rain leaders, floor drains and drop inlets from Buildings 12, 13, 68, and 157. This outfall is also authorized to discharge water from non-contact cooling water. This outfall typically discharges because of groundwater infiltration and sump pumps.	Per Spec	3.3	Storm Drainage Systems	AC	2		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	CAR 005	Roads and parking lots a portion of Building 157and a sump pump in Building 187.	Per Spec	3.3	Storm Drainage Systems	AC	4		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	CAR 006	Drop inlets around Building 40.	Per Spec	3.3	Storm Drainage Systems	AC	2		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	CAR 007	Rain leaders on the north and west side of Building 18.	Per Spec	3.3	Storm Drainage Systems	AC	4		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	CAR 008	Open fields, roads, parking lots and rain leaders from Buildings 4S and 4E. This outfall is also authorized to discharge water from Navy research basins and non-contact cooling water.	Per Spec	3.3	Storm Drainage Systems	AC	4		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	CAR 009	Drop inlets around Building 21.	Per Spec	3.3	Storm Drainage Systems	AC	1		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	CAR 010	Open fields, roads, parking lots and rain leaders from Buildings 4 (North), 9, 147, and 200. This outfall and the upstream manhole are typically surcharged by flow from the receiving stream.	Per Spec	3.3	Storm Drainage Systems	AC	4		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	CAR 011	Open field and serves as conveyance for draining the 2,000,000-gallon water tank located in CAR008. This outfall is also authorized to discharge water from Navy research basins.	Per Spec	3.3	Storm Drainage Systems	AC	0.99		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	CAR 013	Various discharge points, swales, roads, and parking lots adjacent to Buildings 17, 21, 29, 31 L, 188, 189, and 193.	Per Spec	3.3	Storm Drainage Systems	AC	9		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	CAR 014	Roads, parking lots and rain leaders from Buildings 11, 68, and 60. It includes a 5,676-square-foot stormwater retention pond.	Per Spec	3.3	Storm Drainage Systems	AC	7		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	Outfall 015	Witek Road, just west of the access road to Building 200.	Per Spec	3.3	Storm Drainage Systems	AC	0.49		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	Outfall 016	Overflow from adjacent wet pond at Building 80 which provides treatment for the Building 80 roof drains and adjacent pavement.	Per Spec	3.3	Storm Drainage Systems	AC	2.5		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	Outfall 017	Pavement and parking lots adjacent to the northwest side of Building 18.	Per Spec	3.3	Storm Drainage Systems	AC	3		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	Outfall 018	Parking lots and roof drains from Buildings 52 and 152.	Per Spec	3.3	Storm Drainage Systems	AC	3		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	Outfall 019	A non-jurisdictional ditch system that drains paved road (Bill Morgan Road) and Building 83. This outfall typically has flow due to groundwater inflows. The 2015 sampling was performed at a 4-in. PVC line upstream of Bill Morgan Road as the only discharge to the outfall.	Per Spec	3.3	Storm Drainage Systems	AC	1.5		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	Outfall 020	Building 82 basement sump and adjacent overland flow.	Per Spec	3.3	Storm Drainage Systems	AC	0.5		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	Outfall 024	Open field and rain leaders from Building 60.	Per Spec	3.3	Storm Drainage Systems	AC	1		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	Outfall 025	Overflow from adjacent bioretention area at Building 20, which provides treatment for the Building 20 roof drains and adjacent pavement.	Per Spec	3.3	Storm Drainage Systems	AC	1		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	Outfall 026	Roads, parking lots and rain leaders from southeast end of Building 20.	Per Spec	3.3	Storm Drainage Systems	AC	0.49		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	Outfall 027	Roads, parking lots and rain leaders from northeast end of Building 20.	Per Spec	3.3	Storm Drainage Systems	AC	0.49		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	Outfall 028	Runoff from Forrestal Road and the east side of Building 60.	Per Spec	3.3	Storm Drainage Systems	AC	1		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	Outfall 035	Access road to Building 9.	Per Spec	3.3	Storm Drainage Systems	AC	0.49		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	Outfall 037	Witek Road, along the access road to Building 9.	Per Spec	3.3	Storm Drainage Systems	AC	0.5		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	Outfall 038	Tennis court and adjacent parking lots along Witek Road.	Per Spec	3.3	Storm Drainage Systems	AC	5		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	Outfall 039	A portion of the north side of Building 4 and surrounding storage and pavement.	Per Spec	3.3	Storm Drainage Systems	AC	2.5		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	Outfall 040	Building 28 and Witek Road in vicinity of intersection with Atlanta Road.	Per Spec	3.3	Storm Drainage Systems	AC	1		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	Outfall 041	Witek Road, northeast of Building 159.	Per Spec	3.3	Storm Drainage Systems	AC	0.5		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	Outfall 042	Paved areas west of Building 9 (North).	Per Spec	3.3	Storm Drainage Systems	AC	0.49		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	Outfall 043	Building 9 (North) and pavement and parking areas around it.	Per Spec	3.3	Storm Drainage Systems	AC	0.49		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	Outfall 045	Pavement and parking areas of T-19, Buildings 116 and 100.	Per Spec	3.3	Storm Drainage Systems	AC	1		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	Outfall 050	Paved areas adjacent to Building 128.	Per Spec	3.3	Storm Drainage Systems	AC	0.5		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	Outfall 052	Roof leaders of Buildings 24, 199, 148 and a portion of the parking area north of them.	Per Spec	3.3	Storm Drainage Systems	AC	1		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	Outfall 053	Underdrain and overflow from bioretention areas at Building 125.	Per Spec	3.3	Storm Drainage Systems	AC	1		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	NSAW	WNY1	SE Parking Lot, South Bldg 166	Per Spec	3.3	Storm Drainage Systems	SF	1590		See J-1503050-11(a1)-

permeable pavement WASH NSAW WNY2 SE Parking Lot, South Bldg 166 Per Spec 3.3 Storm Drainage Systems SF 2210 See J-1503050-11(a1)-permeable pavement WASH NSAW WNY3 SE Parking Lot, South Bldg 166 Per Spec 3.3 Storm Drainage Systems SF 300 See J-1503050-11(a1)-bioretention WASH NSAW WNY4 South of 197, bioretention Per Spec 3.3 Storm Drainage Systems SF 150 See J-1503050-11(a1)-bioretention WASH NSAW WNY5 Isaac Hull Ave, South Bldg 197A Per Spec 3.3 Storm Drainage Systems SF 670 See J-1503050-11(a1)-permeable pavement WASH NSAW WNY7 Parking Lot, SW Corner Bldg 70 Per Spec 3.3 Storm Drainage Systems SF 1140 See J-1503050-11(a1)-permeable pavement WASH NSAW WNY8 Parking Lot, South Bldg 292 Per Spec 3.3 Storm Drainage Systems SF 750 See J-1503050-11(a1)-bioretention WASH NSAW WNY9 Parking Lot, SE Corner Bldge 292 Per Spec 3.3 Storm Drainage Systems SF 130 See J-1503050-11(a1)-bioretention WASH NSAW WNY10 Parking Lot, South Bldg 292 Per Spec 3.3 Storm Drainage Systems SF N/A See J-1503050-11(a1)-rain barrel WASH NSAW WNY11 Parking Lot, East of Willard Park Per Spec 3.3 Storm Drainage Systems SF 2700 See J-1503050-11(a1)-permeable pavement WASH NSAW WNY12 East Bldg 22 Per Spec 3.3 Storm Drainage Systems SF 720 See J-1503050-11(a1)-permeable pavement WASH NSAW WNY13 in courtyard of 183 Per Spec 3.3 Storm Drainage Systems SF 85 See J-1503050-11(a1)-permeable pavement WASH NSAW WNY14 East of Bldg 22 Per Spec 3.3 Storm Drainage Systems SF 300 See J-1503050-11(a1)-permeable pavement WASH NSAW WNY15 East of Bldg 22 Per Spec 3.3 Storm Drainage Systems SF 90 See J-1503050-11(a1)-permeable pavement WASH NSAW WNY16 East Bldg 76 Per Spec 3.3 Storm Drainage Systems SF 660 See J-1503050-11(a1)-bioretention (rain garden) WASH NSAW WNY17 East Bldg 76 Per Spec 3.3 Storm Drainage Systems SF 200 See J-1503050-11(a1)-bioretention (rain garden) WASH NSAW WNY19 North Bldg 22 Per Spec 3.3 Storm Drainage Systems SF 325 See J-1503050-11(a1)-permeable pavement WASH NSAW WNY20 North Bldg 22 Per Spec 3.3 Storm Drainage Systems SF 250 See J-1503050-11(a1)-permeable pavement WASH NSAW WNY21 North Bldg 22 Per Spec 3.3 Storm Drainage Systems SF 675 See J-1503050-11(a1)-permeable pavement WASH NSAW WNY27 South Bldg 211 Per Spec 3.3 Storm Drainage Systems SF 2990 See J-1503050-11(a1)-bioretention WASH NSAW WNY31 9th St SE, North Bldg 58 Per Spec 3.3 Storm Drainage Systems SF 50 See J-1503050-11(a1)-tree box WASH NSAW WNY32 North Bldg 200 Per Spec 3.3 Storm Drainage Systems SF 100 See J-1503050-11(a1)-tree box WASH NSAW WNY39 Bldg 197 Per Spec 3.3 Storm Drainage Systems SF 2050 See J-1503050-11(a1)-permeable pavement WASH NSAW WNY40 Bldg 197 Per Spec 3.3 Storm Drainage Systems SF 3370 See J-1503050-11(a1)-bioretention WASH NSAW WNY41 Visitor Center Per Spec 3.3 Storm Drainage Systems SF 130 See J-1503050-11(a1)-rain garden WASH NSAW WNY42 Bldg 190 Per Spec 3.3 Storm Drainage Systems SF 2270 See J-1503050-11(a1)-permeable pavement WASH NSAW WNY43 Bldg 208 Per Spec 3.3 Storm Drainage Systems SF 200 See J-1503050-11(a1)-planter box WASH NSAW WNY44 Parking Lot, West of Bldg 70 Per Spec 3.3 Storm Drainage Systems SF 2665 See J-1503050-11(a1)-bioretention

Attachment J-1503050-11(a) Storm Water Drainage Systems Inventory Naval Disctrict Washington Contract/Solicitation: N40080-24-R-4580 PWD Washington (Master Inventory)

WNY SWD Inventory

PWD	Supported Command	Building/ Parcel	Location /Description	Service Level	Spec. Item	Service	UOM	Qty	Size	Notes
WASH	NSAW	WNY1	SE Parking Lot, South Bldg 166	Per Spec	3.3	Storm Drainage Systems	SF	1590		See J-1503050-11(a1)-

Attachment J-1503050-11(a4) Storm Water Drainage Systems Inventory Naval Disctrict Washington

PWD Washington-Washington Navy Yard (WNY)

Ccarderock SWD Inventory

PWD	Supported Command	Building/ Parcel	Location /Description	Service Level	Spec. Item	Service	UOM	Qty	Size	Notes
WASH	Carderock	CAR 001	Open fields, roads, parking lots and rain leaders from Buildings 4 and 4E.	Per Spec	3.3	Storm Drainage Systems	AC	9		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	CAR 002	Open fields, roads, parking lots and rain leaders from numerous buildings. This outfall typically has flow due to groundwater inflows and is also authorized to discharge water from Navy research basins and non-contact cooling water. Outfalls 025-028 drain into the 002 system.	Per Spec	3.3	Storm Drainage Systems	AC	52		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	CAR 003	Rain leaders on the south and west side of Building 18. This outfall is also authorized to discharge Navy research basin water.	Per Spec	3.3	Storm Drainage Systems	AC	5		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	CAR 004	Rain leaders, floor drains and drop inlets from Buildings 12, 13, 68, and 157. This outfall is also authorized to discharge water from non-contact cooling water. This outfall typically discharges because of groundwater infiltration and sump pumps.	Per Spec	3.3	Storm Drainage Systems	AC	2		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	CAR 005	Roads and parking lots a portion of Building 157and a sump pump in Building 187.	Per Spec	3.3	Storm Drainage Systems	AC	4		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	CAR 006	Drop inlets around Building 40.	Per Spec	3.3	Storm Drainage Systems	AC	2		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	CAR 007	Rain leaders on the north and west side of Building 18.	Per Spec	3.3	Storm Drainage Systems	AC	4		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	CAR 008	Open fields, roads, parking lots and rain leaders from Buildings 4S and 4E. This outfall is also authorized to discharge water from Navy research basins and non-contact cooling water.	Per Spec	3.3	Storm Drainage Systems	AC	4		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	CAR 009	Drop inlets around Building 21.	Per Spec	3.3	Storm Drainage Systems	AC	1		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	CAR 010	Open fields, roads, parking lots and rain leaders from Buildings 4 (North), 9, 147, and 200. This outfall and the upstream manhole are typically surcharged by flow from the receiving stream.	Per Spec	3.3	Storm Drainage Systems	AC	4		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	CAR 011	Open field and serves as conveyance for draining the 2,000,000-gallon water tank located in CAR008. This outfall is also authorized to discharge water from Navy research basins.	Per Spec	3.3	Storm Drainage Systems	AC	0.99		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	CAR 013	Various discharge points, swales, roads, and parking lots adjacent to Buildings 17, 21, 29, 31 L, 188, 189, and 193.	Per Spec	3.3	Storm Drainage Systems	AC	9		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	CAR 014	Roads, parking lots and rain leaders from Buildings 11, 68, and 60. It includes a 5,676-square-foot stormwater retention pond.	Per Spec	3.3	Storm Drainage Systems	AC	7		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	Outfall 015	Witek Road, just west of the access road to Building 200.	Per Spec	3.3	Storm Drainage Systems	AC	0.49		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	Outfall 016	Overflow from adjacent wet pond at Building 80 which provides treatment for the Building 80 roof drains and adjacent pavement.	Per Spec	3.3	Storm Drainage Systems	AC	2.5		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	Outfall 017	Pavement and parking lots adjacent to the northwest side of Building 18.	Per Spec	3.3	Storm Drainage Systems	AC	3		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	Outfall 018	Parking lots and roof drains from Buildings 52 and 152.	Per Spec	3.3	Storm Drainage Systems	AC	3		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	Outfall 019	A non-jurisdictional ditch system that drains paved road (Bill Morgan Road) and Building 83. This outfall typically has flow due to groundwater inflows. The 2015 sampling was performed at a 4-in. PVC line upstream of Bill Morgan Road as the only discharge to the outfall.	Per Spec	3.3	Storm Drainage Systems	AC	1.5		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	Outfall 020	Building 82 basement sump and adjacent overland flow.	Per Spec	3.3	Storm Drainage Systems	AC	0.5		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	Outfall 024	Open field and rain leaders from Building 60.	Per Spec	3.3	Storm Drainage Systems	AC	1		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	Outfall 025	Overflow from adjacent bioretention area at Building 20, which provides treatment for the Building 20 roof drains and adjacent pavement.	Per Spec	3.3	Storm Drainage Systems	AC	1		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	Outfall 026	Roads, parking lots and rain leaders from southeast end of Building 20.	Per Spec	3.3	Storm Drainage Systems	AC	0.49		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	Outfall 027	Roads, parking lots and rain leaders from northeast end of Building 20.	Per Spec	3.3	Storm Drainage Systems	AC	0.49		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	Outfall 028	Runoff from Forrestal Road and the east side of Building 60.	Per Spec	3.3	Storm Drainage Systems	AC	1		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	Outfall 035	Access road to Building 9.	Per Spec	3.3	Storm Drainage Systems	AC	0.49		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	Outfall 037	Witek Road, along the access road to Building 9.	Per Spec	3.3	Storm Drainage Systems	AC	0.5		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	Outfall 038	Tennis court and adjacent parking lots along Witek Road.	Per Spec	3.3	Storm Drainage Systems	AC	5		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	Outfall 039	A portion of the north side of Building 4 and surrounding storage and pavement.	Per Spec	3.3	Storm Drainage Systems	AC	2.5		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	Outfall 040	Building 28 and Witek Road in vicinity of intersection with Atlanta Road.	Per Spec	3.3	Storm Drainage Systems	AC	1		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	Outfall 041	Witek Road, northeast of Building 159.	Per Spec	3.3	Storm Drainage Systems	AC	0.5		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	Outfall 042	Paved areas west of Building 9 (North).	Per Spec	3.3	Storm Drainage Systems	AC	0.49		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	Outfall 043	Building 9 (North) and pavement and parking areas around it.	Per Spec	3.3	Storm Drainage Systems	AC	0.49		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	Outfall 045	Pavement and parking areas of T-19, Buildings 116 and 100.	Per Spec	3.3	Storm Drainage Systems	AC	1		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	Outfall 050	Paved areas adjacent to Building 128.	Per Spec	3.3	Storm Drainage Systems	AC	0.5		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	Outfall 052	Roof leaders of Buildings 24, 199, 148 and a portion of the parking area north of them.	Per Spec	3.3	Storm Drainage Systems	AC	1		See J-1503050-13(a5) & J-1503050-13(a4)
WASH	Carderock	Outfall 053	Underdrain and overflow from bioretention areas at Building 125.	Per Spec	3.3	Storm Drainage Systems	AC	1		See J-1503050-13(a5) & J-1503050-13(a4)

Attachment J-1503050-11(a4) Storm Water Drainage Systems Inventory Naval Disctrict Washington

PWD Washington- Carderock

File details come from the government source that posted it. Updated Feb 11, 2026.