Stormwater Management. At US E.P.A Research Triangle Park, NC

Transcription

1 Stormwater Management At US E.P.A Research Triangle Park, NC

2 Campus Overview 512-acre site Shared with NIEHS Designed in 1996 Constructed Occupied in MSF of Office, Lab and Support spaces

3 Stormwater Risks 2 miles of roads 1760 parking spaces 29 storm drain outfalls 4 separate buildings 6 loading docks

4 Stormwater Risks Outdoor storage of research sampling equipment Outdoor coal handling area Over 53,000 gal. of fuel storage: 15 ASTs 4 USTs SPCC 8 dumpsters

5 Our Existing Stormwater Management By Design: Minimized curb and gutter Grassed shoulders Reduced parking half in decks Parking lot runoff treated by 11 bioretention cells & 3 water quality ponds (wet retention)

6 Our Existing Stormwater Management SW treatment all voluntary beyond compliance No construcdtion stormwater permit required (2001) Cisterns at our on-site day care (added in 2009)

7 But Do We Need A Stormwater Permit? Internal environmental audits 3x said YES Yet, in reality, REQUIRED only certain industry types, which we don t meet NIEHS (same campus) has a TSD, which triggers a formal SW Permit with State of NC (DENR) And, EPA s TSD operations are just INDOOR storage, so we asked DENR for Technical Assistance We are a candidate for a No Exposure Certification, based on the above, provided we manage our site properly

8 How Does NC-DENR See Sites Actively Reducing Their SW Regulatory Burden? 1. The No Exposure Exclusion from Permitting 2. Representative outfall status 3. Take advantage of the flexibility built into the permit text 4. Dormant site provisions 5. Achieve no point-source discharge? 6. General Permit coverage vs. Individual Permit coverage A facility that achieves no exposure conditions is doing the best possible job that an industrial facility can do to protect North Carolina s waters from pollutants transported by stormwater NC DENR

9 Our New Approach Pursue No Exposure Certification under review by NC DENR Develop and implement a Stormwater Pollution Prevention Plan as a Best Practice Write Plan around permit requirements (should the N.E.C. be denied) - done Document our infrastructure ongoing Assess condition of all SW devices - ongoing Obtain the means to perform inspections and repairs = incorporated into grounds maintenance and custodial SOWs - ongoing Train to the Plan appropriate federal & contractor staff - done

10 Our New Approach Minimize outdoor use of chemicals, pesticides, and herbicides Integrated Pest Management strategy Prohibiting: Exterior building washing Power washing of sidewalks Vehicle Washing ID and control/eliminate non-sw discharges Follow published recommendations: swppp_guide.pdf

11 So What s in Our SWPPP? 1. Introduction 2. Contact Information / Responsible Parties 2.1 Stormwater Pollution Prevention Team 3. Definitions 4. Facility Description and Layout 4.1 Facility Operations 4.2 Outfalls & Site Drainage Research and Administration Facility National Computer Center First Environments Early Learning Center

12 So What s in Our SWPPP? 5. Potential Pollutant Sources 5.1 Industrial Activity and Associated Pollutant Hazardous Waste Management Pesticides & Fertilizers Highbay Building Loading / Unloading Deliveries Outdoor Storage Area / Old Jenkins Road Petroleum Storage Tanks 5.2 Spills and Leaks Maintenance of Spill Response and Containment Materials EPA-RTP Spill Response EPA-RTP Spill History

13 So What s in Our SWPPP? 5. Potential Pollutant Sources (continued) 5.3 Non-Stormwater Discharges Authorized Non-Stormwater Discharges Unauthorized Non-Stormwater Discharges 6. Best Management Practices 6.1 Stormwater Management Systems 6.2 Good Housekeeping

14 So What s in Our SWPPP? 6. Best management practices (continued) 6.3 Inspection & Maintenance Stormwater Drains Parking Decks, Areaways, and the Plaza Stormwater Drains Highbay Fuel Farm Stormwater drains Loading/Unloading Trench drains Roof Drains Wet Retention Basins & Bioretention Cells FEELC Rain Cisterns 6.4 Erosion and Sediment Controls 6.5 Staff Training

15 So What s in Our SWPPP? 7. Stormwater Management Deficiencies & Corrective Action Plan 8. Construction & Land Disturbance 9. Certification / Annual Review

16 Challenges (= Must Do s) Reliance on our grounds and maintenance contracts SOWs new work requirements need to be added Incomplete facility as-builts for site developments 4 Separate development phases over 13 years, each with their own sets of dwgs never before merged Improving underperforming devices (only 7 of 11 Bioretention Areas) Daily housekeeping Not my job Too many organizational stovepipes No one person in charge Not in my SOW/budget New requirements key is training and oversight

17 Challenges (= Must Do s) Improve oversight & training for permit triggers Land disturbing activities greater than 1 acre Discharge of HTHW to surface waters Inprove O&M and PM Hydraulic bollard leaks Monitor ice treatment Control resident geese

18 Questions?

19 Further Information Need a copy of: Our SWPPP? Our IPM Plan? This presentation? Any other way we can assist? Take my business card me at: schubert.peter@epa.gov Call me at: Come visit our campus!