1 / 16

March, 2010

DRAFT SPDES General Permit for Stormwater Discharges from Separate Storm Sewer Systems (MS4s) (GP-0-10-002). March, 2010. Summary of Changes. Fact Sheet Designation Criteria Permit Changes About 10 Major A Few Less Significant. Major Changes Additional Designations.

tuan
Download Presentation

March, 2010

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. DRAFTSPDES General Permit for Stormwater Discharges from Separate Storm Sewer Systems (MS4s)(GP-0-10-002) March, 2010

  2. Summary of Changes • Fact Sheet • Designation Criteria • Permit Changes • About 10 Major • A Few Less Significant

  3. Major ChangesAdditional Designations • Criterion 1: MS4s discharging to waters for which an EPA-approved TMDL is issued • East Hampton (V) • East Hampton (T) – areas along the South Shore • Southhold (T) – areas along the North Shore and Fishers Island • Putnam Valley – areas tributary to Oscawana Lake • Criterion 3: Automatically designated MS4 areas are extended to Town, Village or City boundaries, Minimum Control Measures 4 & 5

  4. Permit Coverage Public Review Process • Existing covered entities authorized under GP-0-08-002 automatically continue for 180 days • Existing have 180 days to file new NOI (revised annual report form) • MS4s not authorized under GP-0-08-002 must file an NOI if they are required to gain coverage • In accordance with EPA guidance, court decision (EDC v. EPA, 9th Circ. 2003), submission of NOIs will be listed in the Environmental Notice Bulletin with a 28 day period during which comments may be submitted on the NOI

  5. Single Entity (Alternative to RSE) • An opportunity is provided for a single entity to be authorized (all or any MCMs) • Further encourage larger scale coordinated implementation • Supported by the conclusions of the 2008 National Research Council’s report and the participants of the public review group 1. Initiate and administer enforcement procedures 2. Collect, finance, bond or otherwise borrow money 3. Manage and operate the storm sewer system, 4. Implement BMPs at all municipal facilities 5. Obtain property necessary for SMP facilities

  6. Impaired Waters • Adding a clarification on what is meant by negligible changes; changes to land use of less than one acre of impervious cover; and assessment of potential improvement projects. •  compliance determinations for MS4s collaborating to satisfy load reduction requirements. Defining the ‘bubble’ compliance with load reductions to a watershed, whereby MS4s may be credited for reductions within watershed boundaries.

  7. MCMs Addition/Clarification • MCM 2 – Public Involvement/Participation • allowing the public to participate in development and implementation of SWMPs • MCM 4 – Construction Site Stormwater Runoff Control • prior to NOI being terminated under the construction stormwater permit, regulated MS4s are allowed to sign off on the projects. A coordinated requirement for MS4s to accept notices of termination, consistent with the construction permit requirement

  8. MCMs Addition/Clarification MCM 5 – Post Construction S-Water Management • Green Infrastructure practices achieve runoff reduction. To facilitate implementation, the permit requires: • Training municipal officials in Green Infrastructure • Consideration of Green Infrastructure in development of municipal plans and laws development • Permit also allows for MS4 Banking and Credit System • Offsets from construction projects • Provide twice the pollutant reduction • No-net increase of pollutants in impaired waters

  9. MCMs Addition/Clarification • MCM 6 – Pollution Prev & Good Housekeeping • Incorporate runoff reduction/GI into routine upgrades to stormwater conveyance systems and municipal properties

  10. Watershed Improvement Strategies • Additional Areas Added • Two additional maps show areas where Watershed Improvement Strategies must be implemented • EPA approval of the TMDL entitled “Shellfish Pathogen TMDL for 27 303(d)-Listed Waters”. • EPA approval of the TMDL entitled “TMDL for Phosphorus in Lake Oscawana”.

  11. Watershed Improvement Strategies (cont’d) •  Numeric Pollutant Reductions • Quantified reduction requirement by waterbody for each Watershed Improvement Strategy • Specified deadline for planning/implementation • On-site Systems Requirements • Maintenance/Inspection • Change the three year schedule to five year • Inspection of the whole system (absorption area, not just the tank)

  12. Watershed Improvement Strategies (cont’d) • Long Island On-site Systems • Target on-site systems within effected storm sewersheds for inspection, maintenance and rehabilitation • coastal areas with slopes or low infiltrative soils, poorly functioning or improperly designed and maintained on-site sanitary systems • Identify problem areas and conduct regular field investigations/inspections • in those areas of residential and commercial • Document inspection of on-site systems

  13. Public Comments • Received and logged in • ~ 100 pages, • ~ 50 commenters • WIS areas requirements • Deadlines • Reduction rates • Septic inspections • Possible Administrative Extension

  14. Questions Contact Information Shohreh Karimipour, PE (518) 402-8123 NYS DEC Division of Water General Permits Section 625 Broadway Albany, NY 12233-3505

More Related