NPDES Phase II Municipal Stormwater Permit Guidance

Transcription

1 NPDES Phase II Municipal Stormwater Permit Guidance June 2009

2 SUMMARY The intent of this Notebook is to provide the City with a quick reference document for Phase 2 stormwater compliance. This notebook is organized by the requirements in the Phase 2 stormwater permit. Public Education and Outreach Public Involvement and Participation Illicit Discharge Detection and Elimination Control Stormwater Runoff From New Development, Redevelopment, and Construction Sites Pollution Prevention and Operations and Maintenance for Municipal Operations Program Long-Term Monitoring Plan Reporting Requirements 2

3 PUBLIC EDUCATION AND OUTREACH 3

4 2009 Education & Outreach Tracking Form Program Component Activity Type Date to Implement Date Completed Quantity General Stormwater Distributed via Info Flyers mail/office June 5, 2009 Stormwater Website Created/Launched June 15, 2009 Maintained June 15, 2010 Website Hits/Yr Household Hazardous Waste Illegal Dumping and Littering Flyers (see General Stormwater Distributed via Info) mail/office June 5, 2009 Brochure available at City Hall Printed and displayed June 5, 2009 Flyers (see General Stormwater Info) Distributed via mail/office June 5, 2009 Post signs at detention ponds Installed August 3, 2009 Stencil Kit Obtained June 5, 2009 Leased Out Summer 2009 Gardening and Lawn Care Activities Flyers (see General Stormwater Info) Distributed via mail//office June 5, 2009 Low Impact Development LID Guidelines Adopted August 15, 2009 Posted to website August 21, 2009 LID Brochure Distributed to developers Begin Sept Rain Garden Handbook available at City Printed and displayed at Nursery and City Hall June 5,

5 PUBLIC INVOLVEMENT AND PARTICIPATION 5

6 Public Involvement and Participation o Continue to update Stormwater Management Plan on an annual basis to reflect City s current and future stormwater related activities. o The Executive Summary for the Stormwater Management Plan (SWMP) is below. The full text of the Plan is available online through the City s website, at City Hall and at the City Library. 6

7 CITY OF GRANITE FALLS SNOHOMISH COUNTY WASHINGTON STORMWATER MANAGEMENT PLAN G&O #08443 MARCH

8 EXECUTIVE SUMMARY The Washington Department of Ecology issued a 5-year stormwater discharge permit to Phase 2 cities, which includes Granite Falls, on January 17, The permit requires cities to commit to phasing in stormwater tasks, regulations, maintenance practices and reporting requirements over the 5-year permit cycle. This Stormwater Management Plan identifies those commitments necessary to implement this Stormwater Management Program (SWMP). This Plan is organized by the subjects listed in the permit. Specific tasks identified in this plan may change over time as the City gains experience with the Stormwater Management Program. There are seven major requirements in the permit. The City, as part of this Plan, has developed a suite of tasks and measurable goals to satisfy the permit requirements. The permit requirements and tasks that have been developed are outlined below: 1. Public Education and Outreach Mailings Pertaining to Stormwater Issues Stormwater Website Encourage Proper Disposal of Household Hazardous Wastes Address Illegal Dumping and Littering Educate on Appropriate Gardening and Lawn Care Activities Education on New/Low Impact Development 2. Public Involvement and Participation Post Public Involvement Opportunities on Website Stormwater Management Program Meetings Coordination with Adopt-a-Stream Program Storm Drain Stenciling Volunteer Monitoring Community Hotline 3. Illicit Discharge and Detection and Elimination Review Illicit Discharge Legal Authority/Ordinance Maintain Stormwater Inventory (Base Map) Conduct Outfall Screening Identify Stormwater Hotspots, areas of impaired water quality Elimination of Septic/Gray Water Discharges Sanitary Sewer Leak Elimination Illicit Discharge Training Illicit Discharge Hotline Identify/Eliminate Discharges from Storage Tanks 8

9 4. Control Stormwater Runoff From New Development, Redevelopment, and Construction Sites Develop and Update Legal Authority/Ordinances Conduct Construction Inspections Plan Reviews for New and Redevelopment Conduct Post-Developed Inspections Provide Training for Personnel Identify Sensitive Water Bodies and Protective Measures Encourage Low Impact Development 5. Pollution Prevention and Operations and Maintenance for Municipal Operations Program Provide Employee Training Develop Stormwater Pollution Prevention Plan (SWPPP) for City Facilities and Implement Maintenance Standards 6. Long-Term Monitoring Plan Develop a Long-Term Monitoring Plan related to the effectiveness of the SWPPP 7. Reporting Requirements Submit Annual Report by March 31 st Implementation of the Phase 2 Stormwater Management Program will require significant commitment by the City both in terms of personnel hours and financial resources. The City will need to make a long-term commitment to maintain the stormwater program in order to achieve long-term compliance with the Phase 2 stormwater permit. 9

10 ILLICIT DISCHARGE DETECTION AND ELIMINATION 10

11 CITY OF GRANITE FALLS STORMWATER IDDE SCHEDULE 2009 Task Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec Update Stormwater Base Map Conveyance Systems Add Land Use and Basins Implement ordinance prohibiting illicit discharges per the Phase II Permit Develop IDDE program Locate priority areas Conduct field investigations of priority areas (Per guidance manual) Inform public of hazards associated with illegal discharges Publicize hotline for public reporting of spills and illegal connections/discharges Mailing (Feb. 2009) Due August 15th Record number of calls received and actions taken Evaluate IDDE Program Train Staff on IDDE Due August 15th 11

12 CITY OF GRANITE FALLS STORMWATER IDDE SCHEDULE 2010 Task Jan Feb Mar Apr May June July Aug Sept Oc t Nov Dec Update Stormwater Base Map -New Conveyance Systems -Add/Update Land Use and Basins Implement ordinance prohibiting illicit discharges per the Phase II Permit Develop IDDE program Locate/Prioritize Priority Areas Conduct field investigations of priority areas (Per guidance manual) Inform public of hazards associated with illegal discharges Publicize hotline for public reporting of spills, illegal connections/discharges Record number of calls received and actions taken Evaluate IDDE Program Develop Program to Train Staff on IDDE Due Feb. 15th Due Feb. 15th 12

13 CITY OF GRANITE FALLS STORMWATER IDDE SCHEDULE 2011 Task Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec Update Stormwater Base Map Due Feb. 15th -New Conveyance Systems -Add/Update Land Use and Basins Review ordinance prohibiting illicit discharges per the Phase II Permit and update as necessary Develop IDDE program Due Aug. 19th Review/Update priority areas Conduct field investigations of priority areas (Per guidance manual) Inform public of hazards associated with illegal discharges Due Feb. 15th Mailing Develop Procedures for Identifying Priority Areas -Due Aug. 19th Track # of inspections - Due Aug. 19th Feedback on Educational Efforts Due Aug 19 th. Publicize hotline for public reporting of spills, illegal connections/discharges -Record number of calls received and actions taken Evaluate IDDE Program Train Staff on IDDE Due Aug. 19th 13

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16 Granite Falls Illicit Discharge Detection Elimination (IDDE) Training Opportunities 1. Powerpoint Presentation from Wayne County Training Website: 2. Shadow Snohomish County Personnel and receive a powerpoint presentation for the City s viewing: Contact: Steve Britsch Snohomish County Department of Public Works Surface Water Management Division Project Specialist - Water Quality 3000 Rockefeller Ave. MS 607 Everett, WA Tel: ext Cell: Herrera Consultants in Seattle is offering training to cities and counties covered under the National Pollutant Discharge Elimination System (NPDES) Phase II Municipal Stormwater Permit for Western Washington. Three options are available. You can choose 1, 2, or all 3 of the following training options depending on the City s specific needs: Option 1 - General Awareness Level IDD&E Training (Permit Section -S.5.C.3.f.ii) Who should attend? All municipal field staff should attend this training if they might come into contact with or otherwise observe an illicit discharge or illicit connection to the storm sewer system as part of their normal job responsibilities. This may include staff from Utilities (Stormwater and Street crews), Police, Fire, or other departments. The training lasts approximately 1 hour and includes: An overview of the Phase II IDD&E permit requirements How to identify an illicit discharge/connection Proper procedures for reporting and responding to an illicit discharge/connection. Option 2 - Response Level IDD&E Training (Permit Section - S.5.C.3.f.i) Who should attend? Municipal field staff should attend this training if they are responsible for identification, investigation, termination, cleanup, and reporting illicit discharges, including spills, improper disposal, and illicit connections. The training lasts approximately 4 hours and includes: 16

17 How to identify, investigate, terminate, clean up, and report illicit discharges Effective field protocols and examples Enforcement and removal procedures A group dry weather inspection (weather permitting) of a stream or outfall of your choice Lessons learned from other jurisdictions. Option 3 - Operations and Maintenance Training (Permit Section - S.5.C.5.h) Who should attend? Municipal employees whose construction, operations, or maintenance job functions may impact stormwater quality. The training lasts approximately 1 hour and includes: An overview of maintenance standards specified in Chapter 4 of Volume V of the 2005 Stormwater Management Manual for Western Washington How to conduct annual inspections of stormwater treatment and flow control facilities How to conduct annual inspections of catch basins and inlets Sample field checklists to record inspection data Overview of best management practices (BMPs) Overview of standard operating procedures (SOPs) with examples Overview of how to develop and implement a Stormwater Pollution Prevention Plan (SWPPP) with examples. Location Herrera will provide training at the City, for as many or as few staff as you require, based on the NPDES training requirements. Cost The cost of training will be negotiated with the City tailored to the needs of the City, the training options selected (i.e., Option 1, 2, and/or 3), and the number of people trained. To Register, go to the Register section at the bottom of the following website: 17

18 CONTROLLING RUNOFF FROM NEW DEVELOPMENT, REDEVELOMENT AND CONSTRUCTION SITES 18

19 Controlling Runoff from New Development, Redevelopment and Construction Sites o Adopt revised ordinance that addresses LID and O&M requirements stated in the NPDES permit by August 16, 2009 with an effective date of November 16, o Continue plan review. o Inspect proposed construction sites prior to, during, and after construction to reduce sediment transport and to ensure City codes are being met and that stormwater facilities were built per approved plans. o Document site visits and observations. o Document enforcement actions taken during site inspections. o Document maintenance schedules and inspections. o Continue to have the Notice of Intent for Construction Activity available to developers. o Ensure staff is trained on policies pertaining to controlling runoff (including plan review, inspections, permitting, and enforcement) by November 16,

20 POLLUTION PREVENTION AND OPERATION AND MAINTENANCE FOR MUNICIPAL OPERATIONS 20

21 Pollution Prevention and Operation and Maintenance for Municipal Operations o Develop O&M Program that adopts O&M Standards (see Controlling Runoff... Section) by February 15, Program must also include practices to reduce stormwater impacts and reduce pollutants in discharges (per Section S5.5.f and S5.5.g of the NPDES Phase II Permit). o Inspect stormwater facilities per enclosed schedule. Needs to begin by February 15, o Create a Stormwater Pollution Prevention Plan (SWPPP) for City-owned heavy equipment maintenance or storage yards and material storage facilities that are not subject to other NPDES permits by February 15, o Record maintenance activities. o Train staff on O&M Program 21

22 CITY OF GRANITE FALLS STORMWATER MAINTENANCE INSPECTION SCHEDULE Task January February March April May June July Aug Sept October Nov Dec Catch Basins and Inlets 95 cbs/year Debris Barriers/Trash Racks Energy Dissipaters Catch Basin Inserts Every 2 weeks Every 2 weeks Every 2 weeks Every 2 weeks Manholes 18 mhs/year Infiltration Basins/Ponds Every 2 weeks Every 2 weeks Every 2 weeks Detention Ponds Storm (1) Storm (1) Storm (1) Storm (1) Access Roads and Easements Detention Tanks/Vaults Storm (1) Storm (1) Storm (1) Storm (1) Flow Control Structures Fences, Gates, and Water Quality Signs Oil/Water Separators StormFilter Stormceptor Separators Biofiltration Swales / Drainage Trenches Treatment Wetlands Storm Pipe 1) Inspect after major storms Every 9 months 22

23 TMDL MONITORING 23

24 TMDL Monitoring o The following three sites shall be monitored monthly for fecal coliform (see enclosed map). The three sites are described as follows: Station name GRAN1 GRAN2 GRAN3 Site Description Lake Gardner Outlet, just before Pilchuck River Stormwater Pipe ~100 yds upstream of WWTF discharge Culvert near the intersection of Paradise Ln. and Fox Glove Cir. Latitude/Longitude 48º04 46 /- 121º º04 32 /- 121º º04 26 /- 121º58 21 Note: Location GRAN 2 is different from that in the Final TMDL Quality Assurance Project Plan o Test results shall be disclosed in each Annual Report (Section VII-A) required by the NPDES Phase II Permit. 24

25 TMDL Sampling Locations 25