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 Installations Energy & Environment DASA DASA DASA DASA SI E&S IH&P ESOH Dir ANG Source: 2009-2010 of How the Army Runs ARMY STRONG DAIM-ODC william.e.sproul2.civ@mail.mil 2 FOUO 7NOV17

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 • S ee https://mrsi.erdc.dren.mil/sustain/cx/lid ARMY STRONG DAIM-ODC william.e.sproul2.civ@mail.mil 3 FOUO 7NOV17

Policy / Right Thing to Do 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 Photograph by Jane Thomas, IAN Image library Photograph from Low Impact Development Center Satellite image by NASA ARMY STRONG DAIM-ODC william.e.sproul2.civ@mail.mil 4 FOUO 7NOV17

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 ARMY STRONG DAIM-ODC william.e.sproul2.civ@mail.mil 5 FOUO 7NOV17

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). ARMY STRONG DAIM-ODC william.e.sproul2.civ@mail.mil 6 FOUO 7NOV17

Army LID Implementing Guidance 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 STRONG DAIM-ODC william.e.sproul2.civ@mail.mil 7 FOUO 7NOV17

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. ARMY STRONG DAIM-ODC william.e.sproul2.civ@mail.mil 8 FOUO 7NOV17

Army LID Implementing Guidance 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. 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. ARMY STRONG DAIM-ODC william.e.sproul2.civ@mail.mil 9 FOUO 7NOV17

LID Planning and Cost Tool Report Implementation (Cont.) ARMY STRONG DAIM-ODC william.e.sproul2.civ@mail.mil 10 FOUO 7NOV17

Army LID Implementing Guidance Implementation (Cont.) 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. 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. ARMY STRONG DAIM-ODC william.e.sproul2.civ@mail.mil 11 FOUO 7NOV17

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. ARMY STRONG DAIM-ODC william.e.sproul2.civ@mail.mil 12 FOUO 7NOV17

Limit of Disturbance (LOD) Limit of Disturbance – Clearing & Excavating ARMY STRONG DAIM-ODC william.e.sproul2.civ@mail.mil 13 FOUO 7NOV17

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 ARMY STRONG DAIM-ODC william.e.sproul2.civ@mail.mil 14 FOUO 7NOV17

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. ARMY STRONG DAIM-ODC william.e.sproul2.civ@mail.mil 15 FOUO 7NOV17

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 ARMY STRONG DAIM-ODC william.e.sproul2.civ@mail.mil 16 FOUO 7NOV17

Non-Structural Practice Protection of Vegetation on a Construction Site ARMY STRONG DAIM-ODC william.e.sproul2.civ@mail.mil 17 FOUO 7NOV17