The Clean Water Partnership Briers Mill Run Stream Restoration - - PowerPoint PPT Presentation

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The Clean Water Partnership Briers Mill Run Stream Restoration - - PowerPoint PPT Presentation

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The Clean Water Partnership Briers Mill Run Stream Restoration Briers Mill Run Restoration Presentation Introduction Project Details Maintenance of Traffic (MOT) Q&A Briers Mill Run Stream Restoration

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The Clean Water Partnership Briers Mill Run Stream Restoration

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Briers Mill Run Restoration Presentation

  • Introduction
  • Project Details
  • Maintenance of Traffic (MOT)
  • Q&A

Briers Mill Run Stream Restoration Presentation/August 2020

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Program Scope

Plan, design and build stormwater retrofit projects across Prince George’s County

  • The goal is to retrofit 4000 impervious

acres

  • 30 years of functional maintenance of

all devices installed

  • Local, small and minority owned

businesses perform 30-40% of work

  • Community and social economic

development through alternative compliance with faith based and 501c3 organizations, mentor protégé program and the school’s program

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Community Outreach Meetings

  • Wednesday, October 16, 2019

– Presentation to New Carrollton City Council

  • Tuesday, November 5, 2019

– On-site meeting with community members and Soltesz to flag trees that can most likely be preserved

  • Tuesday, November 12, 2019

– Presentation to New Carrollton Green Team

  • Wednesday, December 11, 2019

– Town Hall Meeting ▪ CWP program will present on current design plans for Briers Mill Run stream restoration

  • Wednesday, February 5, 2020

– Second Presentation to New Carrollton City Council

  • Tuesday, June 16, 2020

– Virtual Town Hall Meeting

Briers Mill Run Stream Restoration Presentation/August 2020

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What is Stormwater Run-off?

Presentation title | Date 7

  • When it rains or snows, the precipitation lands on various

surfaces, some that water can penetrate - like lawns, gardens

  • r bodies of water - and others that can’t be penetrated

(impervious surfaces) such as roofs, paved roadways or sidewalks.

  • As stormwater runoff hits impervious surfaces, it can carry

various pollutants from those surfaces to local streams, rivers, and other bodies of water without passing through a treatment facility.

  • Runoff also poses problems on extremely warm days when

precipitation enters local streams at high temperatures creating a damaging environment for fish, plants and other cold water wildlife.

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What Does This Mean for the Community?

  • Prince George’s County, in alliance with

the CWP has been working on the planning and design of a stormwater management project at Briers Mill Stream, extending from Jodie Street to 85th Place.

  • The CWP program will implement and

construct stream restoration best management practices (BMP) and is committed to upgrade and maintain the installed BMP. Estimated Construction Start: September 2020

Briers Mill Run Stream Restoration Presentation/August 2020

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What is Stream Restoration?

  • A process that stabilizes eroded

streams by returning them to a healthy state

  • A BMP that improves water

quality

  • There are several stream

restoration techniques and each restoration project is unique

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Why is Stream Restoration Important?

  • Approximately 75% of all

sediment pollution in the Anacostia Watershed is caused by erosion of riverbanks and river bottoms.

  • Stream restoration can help

reduce the amount of sediment pollution entering the watershed while improving stream health and enhancing wildlife habitat.

  • Restoring the stream helps Prince

George’s County meet Municipal Separate Storm Sewer System (MS4) Federal requirements.

Briers Mill Run Stream Restoration Presentation/August 2020

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Stream Erosion Examples

Large flows of water from impervious surfaces can cause severe erosion and flooding, which can damage buildings, yards and structures and reduce nearby property values.

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Location: Laurel, MD

This stream example is not located in Maryland.

Briers Mill Run Stream Restoration Presentation/August 2020

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12 Briers Mill Run Stream Restoration Presentation/June 16, 2020 Briers Mill Run Stream Restoration Presentation -- August 2020

Site Construction NARDI Construction

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Revised Project Details: Briers Mill Run

Stormwater Site Designer Jason Mills

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Proposed Stream Restoration Location

Along Carrollton Parkway from Jodie Street to 85th Place

Briers Mill Run Stream Restoration Presentation/August 2020

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Completed Design

  • Natural erosion control best practices will be implemented
  • A bio-degradable product will be used to stabilize the stream

bank

  • Remove trees from the stream area
  • New trees will be installed along the top of the bank
  • Remove invasive vegetation
  • Install native plants and shrubs

Briers Mill Run Stream Restoration Presentation/August 2020

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Completed design

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Completed design

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Proposed Best Management Practices (BMP)

Cross Vane Riffle Pool Spacing

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Proposed Best Management Practices (BMP)

Large Pool

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Proposed Best Management Practices (BMP)

Large Pool

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Vegetation/Tree Types

  • Tree Types

– Shademaster Honeylocust (approx. 50 to be planted) – Willow Oak (approx. 36 to be planted) – Chancellor Littleleaf Linden (approx. 27 to be planted) – October Glory Red Maple (approx. 11 to be planted)

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Vegetation/Tree Types

  • Grass/Vegetation Types

– Kentucky Bluegrass – Annual Ryegrass – Foxtail Millet

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Briers Mill Run - Current Conditions

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Briers Mill Run - Current Conditions

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Briers Mill Run - Current Conditions

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Maintenance of Traffic (MOT) Overview

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  • Construction will be completed in 5 phases, approximate duration:

1-2 months per phase, weather permitting

  • 8 AM - 5 PM, Monday through Friday, Saturdays as needed
  • One-lane traffic on parts of Carrollton Parkway
  • Flaggers in place to direct traffic
  • Access to all driveways maintained
  • Traffic cones and signage will be used to help direct traffic. Cones

may remain overnight on Carrollton Parkway, as needed.

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MOT Overview Continued

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  • Parking Restrictions
  • Street parking will be restricted on portions of Carrollton Parkway
  • CWP will provide a minimum of 72-hours' notice for residents to

temporarily relocate parked cars

  • Bus Stops
  • Access to all bus routes will be maintained throughout

construction

  • Minimal changes to bus stops
  • Eastbound WMATA T14 Bus stop at Carrollton Parkway &

85th Place will shift across the street to westbound T14 stop

  • Eastbound service available as normal from the Westbound

stop

  • Busses must adhere to flagger directions
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Briers Mill Run – MOT Phases Overview

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Briers Mill Run – MOT Phase 1

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Carrollton Parkway from 85th Place to Fairbanks St.

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Briers Mill Run – MOT Phase 2

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Carrollton Parkway from Fairbanks St. to Quentin St.

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Briers Mill Run – MOT Phase 3

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Carrollton Parkway from Quentin St. to Carrollton Ct.

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Briers Mill Run – MOT Phase 4

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Carrollton Parkway from Carrollton Ct. to Lamont Dr.

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Briers Mill Run – MOT Phase 5

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Carrollton Parkway from Lamont Dr. to Jodie St.

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Design/Construction Schedule Highlights*

  • Design completed/permit approvals – March 2020
  • Anticipated project start date – September 2020*

*All dates are approximate, weather permitting

Briers Mill Run Stream Restoration Presentation/August 2020

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Questions?

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Connect with

CWP@corvias.com @ PGCCWP @ pgcleanwater @ PGCCWP Look for our channel The Clean Water Partnership

Kristina.Bigby@thecleanwaterpartnership.com

Briers Mill Run Stream Restoration Presentation/June 16, 2020