Prince George’s County Government

Anacostia Steering CommitteePresentation On Upcoming Projects Within The Anacostia Watershed Related To

Stormwater & Water Quality Restoration

ANACOSTIA WATERSHED PROJECT SITE INDEX

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CIP Projects• Fordham Street Drainage Channel Stabilization Design• University Boulevard Cricket Field Stormwater Retrofit Project• Beaverdam #20 Restoration Project

CWP Projects• Greenbelt Lake-Pond Retrofit• Birmingham Estates-High Flow Media Filter/Bio-Swale/Micro-Bioretention• Muirkirk Pond – Pond Retrofit

SID Projects• Arundel Canal Litter Capture Device

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ANACOSTIA WATERSHED SITE LOCATION MAP

Fordham Street Drainage Channel

Stabilization Design

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• PROJECT TYPE – Drainage Channel Stabilization and Wetland Creation • PROJECT LOCATION – Intersection of West Park Drive & Fordham Street in Hyattsville, MD (Watershed: Northwest Branch)• DRAINAGE AREA - 216 ac• IMPERVIOUS AREA – 108 ac• IMPERVIOUS AREA TREATED – 3.25 ac• PROJECT PHASE – Design (100%)• TOTAL COST ESTIMATE – $624,000 (DESIGN: $74,000, CONSTRUCTION: $550,000)• ANTICIPATED CONSTRUCTION NOTICE TO PROCEED – June 2016 • PERMITTING – LOCAL, MDE, USACE

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Fordham Street Drainage Channel

Stabilization Design

Project Description:

• Existing drainage channel located in highly urbanized watershed has active erosion and provides minimal water quality treatment.

• Project will stabilize and improve the Fordham Street channel to provide both sediment and nutrient reduction.

• This design will prevent any further bed and bank erosion. Bank grading and stabilization will provide a floodplain reconnection and create a wetland to reduce pollutant loading rates.

University Boulevard Cricket Field

Stormwater Retrofit Project

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• PROJECT TYPE – Wet Pond• PROJECT LOCATION – 7801 West Park Drive, Hyattsville, MD (Watershed: Northwest Branch)• DRAINAGE AREA – 18.63 ac• IMPERVIOUS AREA – 10.30 ac• IMPERVIOUS AREA TREATED – 7.61 ac• PROJECT PHASE – Design (60%)• TOTAL COST ESTIMATE - $649,000 (DESIGN: $149,000, CONSTRUCTION: $500,000) • ANTICIPATED CONSTRUCTION NOTICE TO PROCEED – August 2016• PERMITTING – LOCAL, MDE, USACE

Purple line R/W

In-line Diversion Structure

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University Boulevard Cricket Field

Stormwater Retrofit Project

Project Description:

• Construct off-line water quality wet pond

• Water diversion via in-line diversion structure located at the corner of West Park Drive and University Boulevard

• An open spillway consisting of a weir wall and riprap channel for safe and non-erosive overflow conveyance to existing drainage channel.

• Pond will augment existing public stormwater facility to provide additional impervious treatment.

Beaverdam #20 Restoration Project

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• PROJECT TYPE – Pond Retrofit & Stream Restoration• PROJECT LOCATION – 6400 Otis Street, Hyattsville, MD (Watershed: Lower Beaver Dam Creek )• DRAINAGE AREA – 71.3 ac• IMPERVIOUS AREA – 21.5 ac• IMPERVIOUS AREA TREATED – 19.7 ac• PROJECT PHASE – Design• COST ESTIMATE – $1,300,000

(DESIGN: $250,000, CONSTRUCTION: $1,050,000)• ANTICIPATED DESIGN NOTICE TO PROCEED - May 2016 • PERMITTING: LOCAL, MDE, USACE

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Beaverdam #20 Restoration Project

Project Description:

• Project proposes restoration of 1200 LF of stream and retrofitting two existing ponds to increase water quality volume.

• Reducing severe streambank erosion and turbity levels in County’s stormwater quality ponds

• Oaklyn Dry Pond: Project proposes a sand filter pre-treatment forebay, and a landscape meadow mix.

• Beaverdam 20: This downstream pond will be converted to wet pond and increase storage capacity.

• Project will protect the existing exposed WSSC utility lines.

Greenbelt Lake-Pond Retrofit

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• PROJECT TYPE – Pond Retrofit• PROJECT LOCATION – 555 Crescent Road, Greenbelt, MD 20770 (Watershed: Indian Creek)• DRAINAGE AREA - 513 ac• IMPERVIOUS AREA – 120 ac• IMPERVIOUS AREA TREATED –120 ac• PROJECT PHASE – Design 85%• TOTAL COST ESTIMATE – $2,000,000 (DESIGN: $500,000, CONSTRUCTION: $1,500,000)• ANTICIPATED CONSTRUCTION NOTICE TO PROCEED – June 2016 • PERMITS REQUIRED: LOCAL, MUNICIPALITY, MDE, USACE

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Greenbelt Lake-Pond Retrofit

Project Description:

• Greenbelt lake pond was designed in 1988, and did not provide any water quality treatment.

• Existing forebays capture one-third of the total watershed draining to Greenbelt Lake

• Project proposes removal of ± 2,385 cu.ftof accumulated sediment from two existing forebays

• North Forebay: Total DA: ± 120 acres , Impervious ±28 acres

• South Forebay: Total DA: ± 51 acres , Impervious ±12 acres

South Forebay North Forebay

Birmingham Estates-High Flow Media

Filter/Bio-Swale/Micro-Bioretention

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• PROJECT TYPE – High Flow Media Filter/Bio-Swale/Micro-Bioretention• PROJECT LOCATION – 4200-4600 Powder Mill Road, Beltsville, MD 20705 (Watershed: Indian Creek)• DRAINAGE AREA - 200 ac• IMPERVIOUS AREA – 60 ac• IMPERVIOUS AREA TREATED –18 ac• PROJECT PHASE – Design 20%• COST ESTIMATE – $2,000,000 (DESIGN: $500,000, CONSTRUCTION: $1,500,000)• ANTICIPATED CONSTRUCTION NOTICE TO PROCEED – June 2016 • PERMITS- LOCAL

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Birmingham Estates-High Flow Media(HFM)

Filter/Bio-Swale/Micro-Bioretention

Project Description:

• The proposed improvements will consist of a storm water retrofit to treat storm water before being collected in the existing storm drain network.

• Treatment will occur in proprietary HFM devices installed at curb location or as swales adjacent to the street which will outfall to the existing storm drain in the area.

• Proposed units have been designed to treat the impervious surfaces in its drainage area up to the 1-inch rainfall.

• This practice does not increase the amount of flow into the existing inlet or through the storm drain, this will not negatively affect the hydraulic characteristics of the existing storm drain system.

Muirkirk Pond-Pond Retrofit

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• PROJECT TYPE – Pond Retrofit• PROJECT LOCATION – 11875 Baltimore Ave, Beltsville, MD 20705 (Watershed: Indian Creek)• DRAINAGE AREA – 1,194 ac• IMPERVIOUS AREA – 240 ac• IMPERVIOUS AREA TREATED –240 ac• PROJECT PHASE – Design 15%• COST ESTIMATE – $1,700,000 (DESIGN: $300,000, CONSTRUCTION: $1,400,000)• ANTICPATED CONSTRUCTION NOTICE TO PROCEED – June 2016• PERMITS- Local

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Muirkirk Pond-Pond RetrofitProject Description:

• In 1990, county converted the existing MuirkirkPond to a shallow wetland marsh, which receives ± 1,152 acres with a total untreated impervious area over 250 acres.

• The proposed work includes removal of sediment built-up primarily south of the entrance channel and at storm drain outfalls.

• Forebays would be created using gabion walls at the channel and storm drain inflows.

• Ingress /egress easements would be required for the construction and future maintenance.

Arundel Canal Litter Capture Device• PROJECT TYPE – Litter Capture Device• PROJECT LOCATION – Arundel Canal (point of installation TBD)• DRAINAGE AREA – 1.7 sq mi / 1,000+ ac• PROJECTED TRASH LOAD REDUCTION – 4,200 pounds annually• PROJECT PHASE – Concept• COST ESTIMATE – $120,000• PROPOSED DESIGN NOTICE TO PROCEED – TBD

Arundel Canal Litter Capture Device

Project Description:

• The project will consist of a Bandalong ™ system to capture approximately 4,200 pounds of litter annually along the Arundel Canal.

• A piped system originating in the District of Columbia outfalls to the Arundel Canal which is located in Prince George’s County.

Bandalong Litter Trap in Watts Branch

Adopt-A-Stream Initiative• PROJECT TYPE – Trash and Litter Reduction• PROJECT LOCATION – Anacostia Watershed• DRAINAGE AREA – 85 sq. mi. / 54,400 ac• PROJECTED TRASH LOAD REDUCTION – 30,000 lbs annually• PROJECT PHASE – Planning and Coordination• COST ESTIMATE – $20,000 (supplies)• PROPOSED NOTICE TO PROCEED – Spring 2016

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Prince George’s County Government