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Using DOEE’s Surface and Groundwater System
for Permit Review Regan Wilhelm
Department of Energy and Environment
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Training Objectives
Become familiar with the Surface and Groundwater System
Understand how the Surface and Groundwater System supports DOEE plan review
Be able to enter, modify, and submit stormwater plan information to DOEE
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Training Outline
Overview of DC Stormwater Programs and Surface and Groundwater System
Using the Surface and Groundwater System to submit plan information
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Allows web-based entry and review of project data Incorporates and enhances existing compliance
calculations Allows project team to access data during design,
review, construction, and inspection Streamlines review of stormwater plans Generates green infrastructure reports for DOEE
About the Surface and Groundwater System
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Integrates with the SRC and RiverSmart Rewards programs to streamline applications Certify SRCs Transfer SRCs Use SRCs Retire SRCs Notification of in-lieu fee payment RiverSmart Rewards applications
Enables online submission of compliance information for an Off-site retention volume (Offv)
Provides Access to the SRC Registry
About the Surface and Groundwater System
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Requirements of the District’s Stormwater Management
Regulations
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Stormwater Rule Major land-disturbing activity
5,000 ft2 or more of land-disturbing activity, AND 2,500 ft2 or more of post-project land cover is impervious, OR Some of the pre-project land cover is natural
Retain the first 1.2” of rainfall on site or through a combination of on-site and off-site retention
Major substantial improvement activity
Renovation for which:
Cost exceeds 50% pre-project value of structure and Combined footprint of structure and land disturb ≥ 5,000 ft2 AND: 2,500 ft2 or more of post-project land cover is impervious, OR Some of the pre-project land cover is natural
Retain the first 0.8” of rainfall on site or through a combination of on-site and off-site retention
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For sites located in the MS4 or in portion of CSS where CSOs will be reduced with GI: On-site retention ≥ 50% of Stormwater Retention Volume (SWRv). Free to go off site Less than 50%: must prove that on-
site retention is technically infeasible or environmentally harmful
No minimum on-site requirement for projects: Located in portion of CSS where
CSOs will be reduced with storage tunnels.
Using MS4 SRCs to meet Off-site retention
Allowable Use of Off-Site Retention
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Offv = SWRv - On-Site
Retention Volume
10,000 gallons
5,000 gallons
5,000 gallons
Off-Site Retention Volume (Offv)
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Two Options to Achieve Offv In-lieu fee (ILF) payment = $3.78 Paid to DOEE. Corresponds to 1 gallon of retention for 1 year. Achieves 1 gallon of Offv for 1 year.
Stormwater Retention Credits (SRCs) Privately tradable. 1 SRC corresponds to 1 gallon of retention for 1 year. 1 SRC achieves 1 gallon of Offv for 1 year. Each SRC has a unique serial number.
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Which SRCs Can a Site Use? Regulated Site Location On-Site Retention Allowable Use of SRCs
AWDZ sites (relief required) SRCs from MS4 (1.25 ratio for non-Anacostia)
MS4 ≥50% SRCs from MS4 <50% (relief required) SRCs from MS4
CSS areas where CSOs are reduced with GI
≥50% Any SRC
<50% (relief required)
• SRCs from MS4 • SRCs from CSS areas where CSOs
are reduced with GI
CSS areas where CSOs are reduced with storage tunnels
≥50% Any SRC
<50% (relief N/A) SRCs from MS4
These requirements are waived if: • The site is already approved and the owner self-generates SRCs from an already-approved project, or • The SRCs are purchased according to a contract that has already been signed Projects must be approved and contracts must be signed by April 30, 2020.
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Using the Surface and Groundwater System
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Create a Surface and Groundwater System Account
Visit the SGS landing page at doee.dc.gov/sgs Request an account (DOEE will approve request) Create log in credentials DOEE communications may be sent from
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Stormwater Management Plans
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Enter Plan Information
Site Information Plan Information Site Drainage Area Information BMP Information Submit
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Default values based on site and date
Default values based on site
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Lot boundary
Site Drainage Area 2 LOD Site Drainage Area 1
Site Drainage Area 3
Site Drainage Area 4
Point of discharge from site
Point of discharge from site
Point of discharge from site
Sheet flow from site
Lot boundary
Site Drainage Areas
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Total area must be equal post project and pre project
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Calculated based on land cover
Add each BMP individually
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X and Y must be entered before plan is submitted
BMP Name is optional for identification
Total area post project and pre project must be equal.
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MS4
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Map of Combined Sewer System (CSS)
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Site Drainage Area Requirements (MS4 Only)
Retain or treat 50% of the SWRv 100% of Vehicular Access Area (VAA) must drain
to BMPs Retain or treat 50% of the SWRv from the entire
Vehicular Access Area
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Treatment Trains
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Treatment Trains
Enter information for the first BMP Enter information for the downstream BMP Create a connection between these two BMPs Update this connection as necessary
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BMP 1
Contributing Drainage Area to BMP 1
BMP 2
Contributing Drainage Area to BMP 2
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It may be necessary to periodically “refresh” a BMP in a treatment train if an upstream or downstream BMP changes
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Submit the Plan
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Necessary Steps Prior to Submittal
Request to be an Agent for the Site Owner Correct all Plan Errors Generate the Required Plan Compliance Sheet Submit the Plan
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Agents
You can modify information in the SGS for Sites that you manage
You can modify information in the SGS for Sites that are managed by someone who has delegated authority to you
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Project Engineer Site
Site 2 Project Engineer 2
Site Owner
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Next Steps
File the building permit application and go to the Permit Center at DCRA (1100 4th Street SW) to pick up an invoice for filing fees
Pay filing fees and upload a receipt to the Surface and Groundwater System
Failure to complete this process will put review of your plan on hold
DOEE will provide review comments Revise the plan information, updating the record in
the SGS, and resubmit
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Database shows assigned plan reviewer and review status
Inspection dates and documents can be accessed
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Approval Process
The complete maintenance responsibility and Offv statements
Generate a new Required Plan Compliance Sheet Attach a PDF of the plan DOEE applies electronic approval stamps After final fees are paid, you can access the
approved plan
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Maintenance Responsibility and Offv
All Major Regulated Projects must have the person responsible for maintenance sign the Maintenance Responsibility Stamp online
All sites with Offv must have the person responsible for achieving Offv sign the Offv Stamp online
These stamps should be signed by the site owner or someone with responsibility for long-term management of the site.
These stamps are not typically completed by the project engineer
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Plan Format
Leave a blank space on the first page: 7 inches wide 9.5 inches high Located 1 inch below the top and 1 inch from the left
Attach as a PDF, do not use a zip file Files may not exceed either 50 MB or 150 pages.
If you cannot meet these limits, you may attach several files, each of which will receive a stamp from DOEE. Include the cover sheet in each file and label it clearly to indicate the order (i.e. part 1 of 3)
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Blank Space
1 inch
The first page of the plan also includes other project information, as directed by DOEE’s reviewer, including:- Project name and address- Plan number- Map- Sheet index- Contact information- Project narrative- Square/Suffix/Lot or Parcel
1in
ch 9.5
inch
es
7 inches
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Exemptions from GAR or Erosion and Sediment Control
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Use the rainwater harvesting calculator to determine retention value
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Public Right of Way
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Public Right of Way
Meet requirements to the Maximum Extent Practicable (MEP)
“Type 1” roadway reconstruction projects Submit at 30%, 65%, 90%, and final design phases
“Type 2” parcel-based projects
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Type 1
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Type 2
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Page 80 of the Stormwater Management Guidebook (doee.dc.gov/swguidebook)
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Unregulated Plans
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More than one type of activity
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More Than One Type of Activity
Examples from Clarifications to the 2013 Rule and Guidebook available at doee.dc.gov/swregs and doee.dc.gov/swguidebook
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BMP Contributing Drainage Area from an Off-Site Area
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Off-Site BMP Contributing Drainage Area
For parcels, retaining volume from an off-site area does not contribute to meeting the SWRv.
Retaining volume from an off-site area may be eligible for Stormwater Retention Credit (SRC) certification
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Lot Boundary
BMP
Contributing Drainage Area
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Erosion and Sediment Control and GAR plans
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Regan Wilhelm [email protected]
202-671-5004
To access DOEE’s Surface and Groundwater System, visit doee.dc.gov/sgs.
For DOEE’s stormwater management regulations and
related information, visit doee.dc.gov/swregs.
Additional Information