Army Stormwater Office of the Assistant Chief of Staff for - - PowerPoint PPT Presentation

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Army Stormwater Office of the Assistant Chief of Staff for - - PowerPoint PPT Presentation

Army Stormwater Office of the Assistant Chief of Staff for Installation Management Bill Sproul, Construction Division, OACSIM ARMY STRONG DAIM-ODC william.e.sproul2.civ@mail.mil 1 FOUO 7NOV17 Army Staff & Secretariat HQDA ASA


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Office of the Assistant Chief of Staff for Installation Management

Bill Sproul, Construction Division, OACSIM

Army Stormwater

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Dir ANG DASA ESOH DASA IH&P

Source: 2009-2010 of How the Army Runs

DASA E&S

HQDA

Army Staff & Secretariat

ASA Installations Energy & Environment DASA SI

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Low Impact Development Drivers

  • Energy Independence and Security Act (EISA), Title 42, USC,

Chapter 52, Section 17094, Section 438, December 2007.

  • OSD Policy Memo, DoD Implementation of Storm Water

Requirements under Section 438 of the Energy Independence and Security Act (EISA), 19 Jan 2010.

  • Assistant Secretary of the Army (Installations, Energy and

Environment), ASA(IE&E), Memo, 17 Jan 2017, Subject: Sustainable Design and Development Policy Update.

  • Guidance: Assistant Chief of Staff for Installation

Management, Memo, 27 Oct 2017, Subject: 2017 Implementing Guidance, Army Stormwater Management Using Low Impact Development

  • See https://mrsi.erdc.dren.mil/sustain/cx/lid
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Annual Loadings to the Chesapeake Bay:

– 291 million pounds of nitrogen (59% emissions, runoff) – 13.8 million pounds of phosphorus (30% runoff, non AG) – 6.6 billion pounds of sediment *Source: Chesapeake Bay Program, 2008 data

Policy / Right Thing to Do

Satellite image by NASA Photograph by Jane Thomas, IAN Image library Photograph from Low Impact Development Center

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What is Low Impact Development

Low Impact Development (LID) incorporates “proven” storm water management principles and technologies into project planning and design in order to manage storm water as close to where the precipitation lands as possible. LID Best Management Practices (BMPs) are used to maintain or restore the pre-development hydrology of the site, reduce runoff volume and peak runoff rates, and reduce the potential transport of pollutants to receiving waters. LID BMPs

– Bioretention – Swales – Permeable pavement (asphalt, concrete, pavers, or blocks) – Rainwater harvesting – Green roofs – Infiltration practice

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Army LID Implementing Guidance

We must look at more multi-use and compact, multi-story solutions that reduce the development footprint, incorporating designs that minimize impervious surfaces. When properly implemented, LID BMPs will maintain and/or restore pre-development hydrology and remove pollutants such as nutrients (nitrogen and phosphorus), oil and grease, and sediments from stormwater with minimal land requirement, when compared to traditional stormwater practices. Implementation of LID BMPs will reduce the number and size of conventional stormwater construction practices of the past (i.e., curb and gutter with storm drain inlets, retention and detention basins).

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Applicability (based upon ASA(IE&E) Policy)

  • This guidance applies to all construction and renovation

projects on Army installations, sites, enclaves and activities, regardless of funding source including Government Owned Contractor Operated (GOCO) installations, and all Army National Guard projects that receive federal funds, with a limit of disturbance of 5,000 SF or more in area.

  • It is encouraged for all other projects to meet the intent of this

guidance when not in conflict with State and local laws and procedures. Exceptions to policy and this guidance include privatization initiatives and medical facilities constructed using DoD Medical (DoDM) funding. At Joint Installations, the owning Service guides all construction policy and guidance.

Army LID Implementing Guidance

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Army LID Implementing Guidance

Implementation

  • The implementation process includes use of the Army LID

Planning and Cost Tool. It is necessary that the "Tool" and "User

Guide" be saved to your computer/shared drive (see the "Example" project loaded in the Tool as a reference). See Design Tools section of the Hydrology and LID webpage: https://mrsi.erdc.dren.mil/sustain/cx/lid

  • The installation/activity Master Planner is responsible for providing an

approved project site. Site selection includes a review of the natural drainage patterns (micro-sheds) to take advantage of natural slope on the planned site and incorporates a strategy to minimize: tree removal, soil grubbing activities and disturbance to sensitive areas/habitats and protected cultural resources.

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Army LID Implementing Guidance

All installation/activity construction projects should start with developing a runoff assessment in order to determine the stormwater requirements required to be met using LID. The assessment identifies any increase in runoff resulting from the project which forms the basis for a LID BMP Strategy and is developed through use of the Army LID Planning and Cost Tool. Use the planning and cost tool "User Guide" as a tutorial on how to enter installation/activity project criteria.

Implementation (Cont.)

The use of LID BMPs in the management of stormwater warrants a broad holistic approach that addresses the development of watershed areas across our installations, sites, enclaves and activities. The installation/activity Master Planner, shall include LID considerations for stormwater management throughout the planning and programming process.

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LID Planning and Cost Tool Report

Implementation (Cont.)

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Army LID Implementing Guidance

Implementation (Cont.)

Multiple types of LID BMPs may be incorporated into a project site. The LID BMP Strategy may include a treatment train (LID BMPs in series) and in some instances may be required to meet enhanced stormwater management and water quality criteria. Long term operation and maintenance costs are to be incorporated in the decision process when determining which BMPs to include in a LID BMP Strategy. The Master Planner develops the LID BMP strategy by selecting the "Type" and "Quantity" of each LID BMP considered for inclusion in the

  • project. The Master Planner should consider the installation planning

standards (IPS), area development plans and installation network plans where available to identify LID BMPs that complement installation master planning strategies.

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Army LID Implementing Guidance

Implementation (Cont.)

The LID Planning and Cost Tool "Report" provides a planning level cost estimate (in today's dollars) and is not to be substituted as a detailed cost estimate developed during design and construction phases. There are two reports that cover the planning and execution of LID

  • implementation. The first is the requirement to develop and attach

the Army LID Planning and Cost Tool Report to Tab J of the DD1391 or keep a copy in the project DA 4283 project file which ever is applicable; and the second report is the “option” to input "Completed Construction Project Data" including LID BMP specific data in the LID module of the Army Energy and Water Reporting System (AEWRS) portal. The AEWRS report was developed to support the Army's annual report to OSD and to maintain a Source of Permanent Record for LID BMPs constructed. All reporting is the responsibility of the installation/activity Master Planner.

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Limit of Disturbance (LOD)

Limit of Disturbance – Clearing & Excavating

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LID BMP Categories

Non Structural LID Practices Structural LID BMPs

– Bioretention – Swales – Permeable pavement (asphalt, concrete, pavers, or blocks) – Rainwater harvesting – Green roofs – Infiltration practice

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Non-Structural LID Practices

Non-Structural LID practices are planning and site design strategies that minimize development impacts. Many non- structural LID BMPs apply to an entire site and often to an entire community and can even be applied to the Installation Master Plan. Therefore, non-structural implementation is maximized prior to utilizing structural LID BMPs. The primary LID characteristics of non-structural BMPs is preventing stormwater runoff from the site. This differs from the goal of structural BMPs which is to help mitigate stormwater-related impacts after they have occurred.

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Non Structural LID Practices

Minimize Total Disturbed Area Preserve Natural Flow Pathways and Patterns Protect Riparian Buffer Areas Protect Sensitive Areas Cluster Development Minimize Soil Compaction Reduce Impervious Surfaces Site Fingerprinting Stormwater Disconnection

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Non-Structural Practice

Protection of Vegetation on a Construction Site

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Non-Structural Practice

Minimal Disturbance to Protect Adjacent Woodlands Must Meet ATFP Setback Requirements

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Non-Structural Practice

Protect Native Prairie Vegetation in Natural Flow Pathway

(Source: SEMCOG, 2008)

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Non-Structural Practice

Riparian Buffer Area

(Source: Iowa Pathways)

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Non-Structural Practice

Protection of Existing Native Woodlands and Wetlands, Kalamazoo, MI

(Source: Fishbeck, Thompson, Carr & Huber, Inc.)

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Bioretention

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Bioretention

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Bioretention

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Bioretention

Bioretention in a Parking Lot

(Source: Larry Coffman, 2008)

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(Source: USACE Savannah District)

Bioretention

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Bioretention

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Bioretention overflow

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Disconnection and Bioretention

Downspout Disconnection to a Vegetated Area

(Source: Prince George’s County, MD Department of Environmental Resources)

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Heat Island

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Heat Island

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Vegetated Swale

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Swale

Grass Swale

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Vegetated Drainage Swale

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Wet Swale

Wet Swale

(Source: Hubbell, Roth & Clark, Inc.)

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Filter Strip

Vegetated Filter Strip Along Roadway

(Source: SEMCOG, 2008)

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Permeable Pavement

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Permeable Pavement

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Permeable Pavement

Permeable Pavement Parking Lot with Bioretention

(Source: Hawkins Partners, Inc., 2009)

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Permeable Pavement

Permeable Asphalt Pavement and Walkway Blocks

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Permeable Pavement

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Permeable Pavement

LID Approach

  • Curbs perforated
  • Rain garden or grassy swale
  • Permeable pavement

Traditional Approach

  • Curb
  • Gutter
  • Impervious surface
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Permeable Pavement

Traditional Approach

  • Curb
  • Gutter
  • Drop inlets
  • Impervious surface

LID Approach

  • Road outlined but unimpeded

flow

  • Rain garden or grassy swale
  • Permeable pavement
  • Narrow foot print
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(Source: Leigh Ann Campbell)

Permeable Pavement

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45 Porous Asphalt Pathway at Grey Towers National Historic Site, Milford PA

(Source: SEMCOG, 2008)

Permeable Pavement

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46 Pervious Asphalt Basketball Court

(Source: Philadelphia Water Department)

Permeable Pavement

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Rainwater Harvesting

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Rainwater Harvesting

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Rainwater Harvesting

Rain Barrels Storing Water from Roofline

(Source: U.S. Army Fort Bragg)

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Rainwater Harvesting

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Rainwater Harvesting

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Rainwater Harvesting

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53 HQ Chesapeake Bay Foundation

Annapolis, MD

Rainwater Harvesting

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Green Roof

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Green Roof

Green Roof at the Tobyhanna Army Depot

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Green Roofs

Traditional Approach

  • Membrane and ballast
  • Downspouts to Storm water

LID Approach

  • Membrane and vegetation
  • Disconnect downspouts
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Infiltration

Infiltration Trench

(Source: Tony Parker, Classic Landscapes, 2007)

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58 Installation of a Subsurface infiltration Bed

(Source: Cardno JFNew)

Infiltration

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59 Surface Sand Filter

(Source: City of Portland, OR)

Infiltration

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60 Level Spreader at the Edge of a Wetland Area

Treatment Train (Level Spreader/Wet Land)

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61 Two Chambered Sand Filter

(Source: Wayne County, MI Department of Public Works)

Treatment Train (Sand Filter/Sand Filter)

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Treatment Train (Swale/Infiltration)

Vegetated Swale with Infiltration Trench

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Cluster Development

Aerial View of Cluster Development in Ann Arbor, MI

(Source: Atwell LLC)

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Treatment Train (Wetland/Lake/Infiltration)

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Tree Filter Box

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Reduced On-Street Parking

Use of Reduced Parking Footprint in On Street Areas

(Source: Institute of Transportation Engineers)

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Functional Water Feature

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Stream Day-Lighting

Fort Meade, Maryland

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Stream Daylighting

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UAV Runway, ARL - APG

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Master Planner and LID

  • Incorporating LID into MILCON & SRM Projects

– Master Planner has Lead – Complete Runoff Assessment (Use Army LID Planning and Cost Tool) – Develop LID BMP Strategy – Planning Charrette (Code 0, LID Planning & Cost Tools) – Project Definition Report (Code 3, Validate Planned LID Scope) – ENG 3086 (Code 2 or 3, Tab A Cost Estimate) – Design Charrette (Code 6 or 7, Refine LID Scope)

  • Integrate Low Impact Development
  • IPS/IDG, AR210-20/420-1, UFCs
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LID in the IPS/IDG

  • Integrate LID principles into your

Installation Planning Standard/Design Guide.

  • LID BMPs are the building blocks for

storm water management.

  • BMPs can be integrated into

buildings, infrastructure or the landscape design.

  • Almost all components of the built

environment have the potential to serve as a BMP, including open space, streetscapes, parking lots, sidewalks and medians.

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Ultimate Goal Net ZERO Water

  • The Army’s Net Zero initiative has the goal of installations becoming

Net Zero in terms of energy, water, and waste, with the ultimate goal

  • f sustainable installations.
  • ASA(IE&E) launched the Army’s Net Zero Installations initiative for

energy, water, and waste in 2010. In April 2011, the Net Zero initiative kicked off with six Net Zero energy pilot installations, six Net Zero water pilot installations, and six Net Zero waste pilot installations with two additional integrated Net Zero pilot installations.

  • A Net Zero water installation limits the consumption of freshwater

resources and returns water back to the same watershed to avoid depleting regional groundwater and surface water resources in quantity and quality over the course of a year.

  • The Net Zero water strategy balances water availability and use to

ensure a sustainable water supply for years to come.