Kent School District

Storm Water Management Program (SWMP)

Kent School District

Environmental Services Department

12033 SE 256th Street D-300

Kent, WA 98030

March 2011

Table of Contents

Kent School District 2011 Stormwater Management ProgramPage 1

1. INTRODUCTION

1.1 Overview

1.2 Regulatory Background

1.3 Permit Compliance

1.4 Public Comments

2. PUBLIC EDUCATION AND OUTREACH

2.1 Overview

2.2 Maintenance, Grounds, Custodial staff and automotive shop teachers

3. PUBLIC INVOLVEMENT AND PARTICIPATION

3.1 Overview

3.2 Opportunities for Public Participation and Availability of Documents

4. ILLICIT DISCHARGE DETECTION AND ELIMINATION

4.1 Overview

4.2 Municipal Separate Storm Sewer Map

4.3 Illicit Discharge Detection and Elimination Ordinance

4.4 Ongoing Illicit Discharge Detection and Elimination Program

4.5 Field Inspections

4.6 Training

5. CONSTRUCTION SITE STORMWATER RUNOFF CONTROL

5.1 Overview

5.2 Operation and Maintenance

5.3 Record Keeping

5.4 Training

6. POLLUTION PREVENTION AND OPERATION AND MAINTENANCE FOR MUNICIPAL OPERATIONS

6.1 Overview

6.2 Maintenance Standards

6.3 Inspections

6.4 Spot Check Inspections

6.5 Catch Basins and Inlet Inspections

6.6 Pollution Reduction

6.7 Procedures for Pollutant Reduction

6.7.a Outdoor Operations & Maintenance

6.7.b Building Maintenance

6.7.c Painting, Staining, Scraping, Sanding and Sandblasting

6.7.d Pressure Washing and Exterior Surface Cleaning

6.7.e Parking Lot Maintenance

6.7.f Fertilizer, Herbicide and Pesticide Application

6.7.g Vehicle Maintenance & Automotive Shop Departments

6.7.h Materials Storage

6.8 Training

7. TMDLs AND MONITORING

7.1 Total Maximum Daily Loads (TMDLs)

7.2 Monitoring

Kent School District 2011 Stormwater Management ProgramPage 1

KENT SCHOOL DISTRICT 2011

STORMWATER MANAGEMENT PROGRAM

1. INTRODUCTION

1.1 Overview

This document represents the Kent School District’s Storm Water Management Program (SWMP). This SWMP is required by the Washington State Department of Ecology (Ecology) as a condition of the Western Washington Phase II Municipal Stormwater Permit (Phase II Permit). The Phase II Permit covers discharges from regulated small municipal separate storm sewer systems (stormwater system). As an operator of a small stormwater system, the Kent School District(KSD) was required to obtain coverage under the Permit.

This document will be updated annually for submittal with KSD’s Annual Report to Ecology by March 31st each year as required by the Permit.

1.2 Regulatory Background

The National Pollutant Discharge Elimination System (NPDES) is a permit based program implemented under the authority of the Federal Clean Water Act. The NPDES program is intended to reduce the discharge of pollution to waters of the United States in order to protect and restore waters for “beneficial uses” such as swimming and fishing. Waters of the United States, or Waters of the State, when referred to locally, includes streams, lakes, Puget Sound, and groundwater. While the NPDES is a federal program, it is administered by the State Department of Ecology (Ecology) in Washington State.

The NPDES permit program covers many different types of discharges; including industrial, construction project runoff, and municipal stormwater.

Under the Municipal NPDES program, cities and counties with stormwater systems serving a population of more than 100,000 as of the 1990 Census were required to seek coverage under the Phase I Permit. Operators of stormwater systems serving populations of 1000 to 100,000 as of the 1990 Census, such as the Kent School District, were required to seek coverage under the Phase II Permit.

The Phase II Permit was issued by Ecology on May 2, 2009 and went into effect on May 15, 2009.

1.3 Permit Compliance

The Phase II Permit is intended to reduce sources of pollution common to urbanized areas. These include pollutants such as fluids and metals from cars, fertilizers and pesticides from yard care, soaps from car washes, and pet waste. Construction site discharges and operation and maintenance of the stormwater system are also regulated under the Phase II Permit.

The Phase II Permit requires that all covered municipalities implement a Stormwater Management Program (SWMP) to address five required program elements:

  1. Public Education and Outreach
  2. Public Involvement and Participation
  3. Illicit Discharge Detection and Elimination
  4. New Development, Redevelopment and Construction Site Run-Off
  5. Pollution Prevention and Operations and Maintenance of Municipal Facilities

The Phase II Permit also requires KSD to reduce the discharge of pollutants from four high school site’s stormwater system to the maximum extent practicable, meet Washington State’s All Known and Reasonable Treatment requirements, and protect water quality.

The annual report documentsKSD’s compliance with the Phase II Permit. Compliance as demonstrated by the annual report will constitute successful implementation of this SWMP.

1.4 Public Comments

Kent School District appreciates public input in the ongoing development and implementationof this document. Comments or concerns regarding this SWMP may be sent to the following address:

Kent School District

Environmental Services Department

12033 SE 256th Street D-300

Kent, WA 98030

Or via email at:

2. PUBLIC EDUCATION AND OUTREACH

2.1 Overview

Kent School District’s stormwater pollution prevention education program is geared towards persons and entities that have the potential to affect surface water quality each of the four high school sites. Thetargeted audience includes maintenance staff, custodial staff, grounds staff, automotive shop teachersand other employees of Kent School District.

The goal of the education program is to reduce or eliminate behaviors and practices that cause or contribute to adverse stormwater impacts. The program is intended to achieve measurable improvements in the target audience’s understanding of surface water pollution and what they can do to prevent it. The program will take advantage of regional educational opportunities in addition to partnering with neighboring jurisdictions and regulatory agencies.

Stormwater education and outreach efforts will target the audience categories listed below. For each audience category, the goal of the education and outreach efforts are listed, followed by the activities planned to achieve the goals.

2.2 Maintenance, Grounds, Custodial staff and automotive shop teachers

Goals:

  • Increase understanding of how stormwater is generated and how it flows through the stormwater system and ultimately ends up in streams, lakes, and the Puget Sound.
  • Inform all staff of how their actions can contribute to pollution.
  • Increase understanding of how stormwater is generated and how it flows
  • Describe pollution prevention techniques and best management practices (BMPs) that staff can use to reduce pollution of storm and surface waters.
  • Describe pollution prevention techniques and environmental stewardship actions that can reduce pollution of our surface waters.
  • Teach the proper techniques for storage and disposal of pesticides, fertilizers, and other household hazardous wastes.

Activities:

  • Conduct annual training on stormwater management procedures to discuss:

-Spill prevention and response

-Chemical storage and disposal

-Maintenance of stormwater sewer system

  • Apply and maintain “dump no waste” labels on storm drain inlets.
  • Website updates to provide current stormwater informational materials.
  • Provide at least one stormwater education presentation per year to custodial staff to discuss pollution prevention requirements for custodial activities.
  • Provide at least one stormwater education presentation per year to maintenance and grounds staff to discuss pollution prevention requirements for maintenance and grounds activities.

3. PUBLIC INVOLVEMENT AND PARTICIPATION

3.1 Overview

Kent School District will encourage public involvement in the development and implementation of the SWMP. KSD will comply with applicable State and local public notice requirements when developing components ofthe SWMP.

3.2 Opportunities for Public Participation and Availability of Documents

Kent School District will make the current SWMP Plan, the annual report, and all other submittals required by the Phase II Permit, available to the public. The annual report and the SWMP shall be posted on the district’s website.Public notice will be given that the SWMP is online and available for review and comments.

The SWMP and annual report arealso available from the Environmental Services Departmentupon request.

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4. ILLICIT DISCHARGE DETECTION AND ELIMINATION

4.1 Overview

Kent School District currently responds to reports of spills and illicit discharges. However, a fully documented Illicit Discharge Detection and Elimination (IDDE) program will be implemented no later than August 20, 2011.

By implementing the following IDDE elements, KSD intends to reduce the amount of contaminants entering the stormwater system. The following IDDE program elements will allowfor an efficient and uniform response to reports of illicit discharges and connections.

4.2 Municipal Separate Storm Sewer Map

Maps of each of the four high school stormwater system assure that illicit discharges and spills can be traced upstream for source detection. Maps also aid in identifying downstream fate of non-stormwater discharges. This information can aid in isolating, diverting, and remediating non-stormwater discharges. Complete site maps will be available August 20, 2011.

4.3 Illicit Discharge Detection and Elimination Ordinance

Kent School District shall comply with all ordinances, rules, and regulations of the City of Covington, City of Kent, and King County that govern non-storm water discharges.

4.4 Ongoing Illicit Discharge Detection and Elimination Program

Site plans showing plumbing systems at high school facilities shall be examined to identify any illicit connections. If any toilets, sinks, appliances, showers, floor drains, can washer drains, oil water separators, other water using equipment are connected to the separate storm water drainage system, these connections must either be permanently plugged or disconnected and rerouted as soon as possible. If it is not obvious through observation or examination of site plans, one method of determining where a pipe or structure drains is to perform a dye test with a non-toxic dye or smoke test. These tests must be performed by qualified personnel.

The following measures shall be implemented at the four high school sites to minimize non-storm water discharge into storm water drainage systems:

  • Irrigation systems shall be turned off during the rainy season months of October to May.
  • To avoid un-necessary watering, irrigation systems will be turned on only when lawns and play fields are drying and/or drought-like conditions persist.
  • Irrigation will be limited to front lawns and play fields.
  • No detergents shall be used when power washing buildings or sidewalks.
  • If detergents must be used, the water diversion kit (located in the KSD warehouse) must be used to prevent wash water detergents from entering storm drains.
  • No car washes are permitted on Kent School District property.

4.5 Field Inspections

Conduct field inspections and visually inspect for illicit discharges at all known outfalls that discharge to surface waters. Visually inspect at least one third of all known outfalls each year. Observations shall be recorded on the Preventive Maintenance Inspection Form (Appendix B, Form 1).

If illicit discharges are discovered, these shall be documented in the Preventive Maintenance Inspection Form and work order submitted to the Maintenance to correct the illicit discharge as soon as possible. Records of field inspections shall be maintained at the Maintenance and Grounds Dept at Kent School District Administration campus.

Methods and Responses:

◦Screening for illicit connections will be conducted using methods equivalent to: “Illicit Discharge Detection and Elimination: A Guidance Manual for Program Development and Technical Assessments”, Center for Watershed Protection, October 2004.

◦Investigation will be initiated within 24 hours of the discovery or report of suspected illicit discharges.

◦Emergency discharges will be responded to immediately when reported and inspected when safe to do so

◦All reported incidental discharges will be inspected no later than 1 week after being reported

◦Upon confirmation of the illicit nature of a storm drain connection, termination of the connection will be verified within 180 days, using enforcement authority as needed.

4.6 Training

Kent School Districtbegan training staff in October of 2009 on the identification and reporting of illicit discharges into the stormwater system.

All staff responsible for identification, investigation, termination, cleanup, and reporting illicit discharges, including spills, improper disposal and illicit connections is trained to conduct these activities.

Kent School District’s IDDE training program includes staff, which, as part of their normal job responsibilities, might come into contact with or otherwise observe an illicit discharge or illicit connection to the stormwater system. Training includes the identification of illicit discharges and connections, and the proper procedures for reporting and responding to illicit discharges and connections.

Follow-up training is provided annually to address changes in procedures, techniques or requirements, and to train new staff.KSD documents and maintains records of the training provided and the staff trained.

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5. CONSTRUCTION SITE STORMWATER RUNOFF CONTROL

5.1 Overview

It is required that contractors obtain the necessary permits for construction projects and activities as to comply with NPDES prior to discharging construction related stormwater.Contractors shall show proof of proper training to comply with erosion and sediment control requirements.

5.2 Operation and Maintenance

KentSchool District has detailed requirements for operation and maintenance (O&M) of permanent stormwater facilities. These requirements include:

  • Annual inspection of all KSD maintained stormwater facilities
  • Maintenance standards equivalent to those specified in Chapter 4 of Volume V of the 2005 Stormwater Management Manual for Western Washington.
  • When an inspection identifies an exceedence of the maintenance standard, maintenance will be performed:

◦Within 1 year for typical maintenance of facilities, except catch basins.

◦Within 6 months for catch basins.

◦Within 2 years for maintenance that requires capital construction of less than $25,000.

  • For each exceedence of the required time frame for stormwater facility maintenance, KSD will document the circumstances and remedy.
  • Maintenance inspection frequency must be performed according to the schedules above unless there are maintenance records to justify a different frequency.

5.3 Record Keeping

All records of inspections and enforcement actions by staff will be retained. Records of maintenance activities will be retained.

Kent School District will keep records of all projects disturbing more than one acre, and all projects of any size that are part of a common plan of development or sale that is greater than one acre that are approved after February 16, 2010.

5.4 Training

Kent School District staff responsible for implementing the program to control stormwater runoff from new development, redevelopment, and construction sites, including permitting, plan review, construction site inspections, and enforcement, shall be trained to conduct these activities. Follow-up training will be provided as needed to address changes in procedures, techniques or staffing. KSD will maintain records of the training provided and the staff trained.

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6. POLLUTION PREVENTION AND OPERATION AND MAINTENANCE FOR MUNICIPAL OPERATIONS

6.1 Overview

Kent School District’s operations and maintenance (O&M) program isintended to ensure the safe and efficient operation of all stormwater detention, treatment, and conveyance systems. This is both to minimize flooding and to prevent or reduce pollutant runoff from site operations and the MS4.

6.2 Maintenance Standards

KSDhas established maintenance standards for municipal operations equivalent to those specified in Chapter 4 of Volume V of the 2005 Stormwater Management Manual for Western Washington. These include:

  • The requirement that, when an inspection identifies an exceedence of the maintenance standard, maintenance will be performed:

◦Within 1 year for typical maintenance of facilities, except catch basins.

◦Within 6 months for catch basins.

◦Within 2 years for maintenance that requires capital construction of less than $25,000.

  • For each exceedence of the required time frame for stormwater facility maintenance, KSDwill document the circumstances and remedy.
  • Maintenance inspection frequency must be performed according to the schedules above unless there are maintenance records to justify a different frequency.

6.3 Inspections

The O&M program for operations includes annual inspections of all four high school site flow control facilities, other than catch basins, and taking appropriate maintenance actions in accordance with the adopted maintenance standards. The annual inspection requirement may be reduced based on inspection records.

Reducing the inspection frequency will be based on maintenance records of double the length of time of the proposed inspection frequency. In the absence of maintenance records, KSD may substitute written statements to document a specific less frequent inspection schedule. Written statements will be based on actual inspection and maintenance experience.

6.4 Spot Check Inspections

The O&M program for municipal operations will include spot checks of potentially damaged permanent treatment and flow control facilities (other than catch basins) after major (greater than 24-hour-10-year recurrence interval rainfall) storm events. If spot checks indicate widespread damage/maintenance needs, then:

  • Inspections of all stormwater treatment and flow control facilities that may be affected will be conducted.
  • KSD will conduct repairs or take appropriate maintenance action in accordance with maintenance standards established above, based on the results of the inspections.

6.5 Catch Basins and Inlet Inspections

The O&M program for KSD Maintenance & Grounds Dept. will include inspections of all catch basins and inlets on eachof the four high school sites least once before the end of the Permit term.

  • Catch basins will be cleaned if the inspection indicates cleaning is needed to comply with established maintenance standards.
  • Decant water is disposed of in accordance with Appendix 6 of the Phase II Permit -Street Waste Disposal.

6.6 Pollution Reduction

KSD makes all known and reasonable efforts to reduce stormwater impacts associated with runoff from sidewalks, parking lots, driveways, owned or maintained by KSD, and maintenance activities conducted by KSD. The following activities are addressed:

  • Cleaning of catch basin systems that convey stormwater in ditch systems
  • Ditch maintenance
  • Parking lot cleaning and painting
  • Parking lot repair and resurfacing, including pavement grinding
  • Snow and ice control
  • Utility installation
  • Pavement striping maintenance
  • Maintaining grass areas, including vegetation management
  • Dust control

6.7 Procedures for Pollutant Reduction