Multi-Sector General Permit

Preparing a Stormwater Pollution Prevention Plan

DEC Stormwater Section

Christy Witters & Christina Hutchinson

www.vtwaterquality.org/stormwater.htm

(802) 241-3770

Agenda

• Multi-Sector General Permit Overview

• Deadlines

• Stormwater Pollution Prevention Plan (SWPPP) Required Contents

• Individual Assistance – Endangered Species information– Impaired Waters information

MSGP Overview

• Goal: Prevent pollution from industrial activities • VT MSGP signed August 18, 2006• 5 year National Pollutant Discharge Elimination

System (NPDES) permit required by Federal law• Requires facilities that have industrial materials

or activities exposed to stormwater to:– Prepare a Stormwater Pollution Prevention Plan

(SWPPP) – Monitor outfalls for potential pollutants

Deadlines

• Notice of Intent (NOI) application formImmediately

• Stormwater Pollution Prevention Plan (SWPPP)Immediately

SWPPP Contents

• We will now walk through the Stormwater Pollution Prevention Plan

• Follow along in the 2 documents provided:– Blank Stormwater Pollution Prevention Plan– Stormwater Pollution Prevention Plan

Instruction Booklet

• Fill in your facility name

• Leave your permit number blank– Your permit number will

be assigned when you submit your application

– It is a 4 digit number, unique to your facility

– Example: 1234 - 9003

Cover Page

Introduction

• Enter the official or legal name of the facility or site.

• Enter the street address of the facility.

Pollution Prevention Team

• Enter the name, title and contact information for the team members.

• Enter the responsibilities for each team member.

• Areas of responsibilities include:– initial site assessment– identification of pollutant sources

and risks– decision making on appropriate

BMPs– regular evaluations to measure

the effectiveness of the plan.

Page 1

Facility Information• Enter the complete street

address of the facility.

• Enter the Latitude and Longitude of the approximate center of the facility.

• Enter the Standard Industrial Classification (SIC) code and MSGP Sector for your facility.

Page 2

Narrative Site Description1. Enter the size of the facility in

acres2. Enter the size of the

impervious cover in acres.3. Divide the impervious area (#2)

by the total size of the facility (#1) and multiply the result by 100.

Example: 1. Size of facility = 2 acres2. Impervious cover = 1.5 acres3. (1.5 / 2) = 0.75 x 100 = 75%

• Enter the facility specific information

Page 2 (continued)

General Location Map• Provide a U.S. Geological

Survey (USGS) quadrangle map

– Must show receiving waters and other significant landmarks within a one-mile radius.

• You may use the Stormwater Site Locator map at http://maps.anr.state.vt.us/website/sw_viewer to locate your facility and receiving waters.

Page 3

Site Map• See SWPPP Instruction Booklet for map requirements

Page 4

Receiving Waters• Enter the names of all

receiving waters to which stormwater from your site is discharged

• Enter the numbers of the discharge points that flow to this receiving water (number your discharge points on your site map)

Enter the receiving water classification found in the Vermont Water Quality Standards

Identify if the receiving water is impaired and for what pollutant

Page 5

Precipitation Information• Enter the annual average

precipitation for your site. – Northeastern Region = 45

inches– Western Region = 39

inches– Southeastern Region =

46.5 inches

• Enter the wettest months. • Enter the expected rainfall

in the wettest month.• Describe the type and

intensity of storms. • Explain how your

operation is affected by the weather.

Page 5 (continued)

Inventory of Site Areas and Exposed Materials

• Significant Materials Include:– material handling equipment– industrial machinery– raw materials– finished products– waste materials such as ashes,

slag, and sludge– liquids including fuels, solvents,

and detergents– fertilizers, pesticides

Page 6

Significant Materials Used Onsite

• Enter the physical description and stormwater pollutants that are contained in each significant material

• This information is found on Material Safety Data Sheets

• Use this information during inspections to correlate stormwater contamination with its source.

Page 7

Inventory of Past Spills and Leaks

• Record any spills or chronic leaks that have occurred on-site for three years prior to this permit

• When you develop stormwater controls for the facility you must consider measures that will prevent reoccurrence of spills

• If there have been no spills or leaks on your site within the last three years, you may write “No past spills or leaks at this facility”

Page 8

Certification of Non-Stormwater Discharges

• All outfalls at the site need to be evaluated for the presence of non-stormwater discharges

• Examples:– vehicle wash water– process water– sanitary wastewater

Page 9

Certification of Non-Stormwater Discharges• Fill in table and note corrective actions taken

Appendix A

Allowable Non-Stormwater Discharges

• List any allowable non-stormwater discharges at your facility

• See the Instruction Booklet for allowable discharges

Page 9 (continued)

Best Management Practices

• Area Specific• Site Wide

• Include categories:– Good housekeeping– Minimizing exposure– Preventative maintenance– Spill Prevention and

Response

• Use BMP Factsheet

Page 10 - 12

Spill Response

• Standard spill response procedures have been included in the fillinable SWPPP

• Include additional spill response procedures for your facility, if you have them

• Include your spill prevention and response plan for tanks, fuel pumps, or hazardous materials for your facility, if you have one

Page 13

Vehicle and Equipment Washing

• No wash waters from the cleaning of vehicles or equipment shall be allowed to enter the storm drainage system or waters of the state

• The Wastewater Management’s Vehicle and Equipment Washing guidelines are included in the fillinable SWPPP

• Circle the procedure (1- 4) that you will follow at your facility when washing vehicles or equipment.

Page 14

Sediment and Erosion Control

• List all areas that experience active soil erosion (i.e. sand or dirt piles, unpaved parking areas).

• Examples of BMPs that limit and control sediment and erosion include:

– leaving as much vegetation onsite as possible

– minimizing the time that soil is exposed

– stabilizing the disturbed soils as soon as possible

– slowing down the runoff flowing across the site

– providing drainage ways for the increased runoff

– removing sediment from stormwater runoff before it leaves the site

– preventing runoff from flowing across disturbed areas and diverting the flow to vegetated areas

Page 15

Structural BMPs

• List all of the existing and planned structural stormwater controls to treat this residual pollution

• Examples include:– Stormwater runs onto

vegetated areas and infiltrates

– Runoff is routed to a detention or retention basin

– Runoff from parking or storage area is passed through an Oil/Grit separator

– Runoff goes to dry wells– A biofilter or bioremediation

is used to treat runoff.

Page 16

Routine Inspections

1. Enter how often inspections will be completed (at least once a month)

2. Enter the name of the person who will conduct the inspections

3. Record inspection information in Appendix B

Page 17

Employee Training

1. Enter how often employee training sessions will occur (at least once a year)

2. Enter the period of time that new employees will be trained within after they start work.

3. Record employee attendance information in Appendix C

Page 17 (continued)

Monitoring Requirements

• visual inspection • benchmark monitoring• effluent limitations monitoring• impaired waters monitoring

• area-specific monitoring

Page 18

Page 18 (continued)

Quarterly Visual Monitoring

• Visually inspect stormwater discharges once per quarter, every year for:

- color

- odor

- clarity

- floating solids

- settled solids

- foam

- oil sheen other obvious indicators of pollution

Benchmark Monitoring

• Enter the parameters that your facility is required to monitor for

• Enter the name of the person or company that will be collecting the samples

• Enter the name of the lab that will be processing the samples

Effluent Limitations

• Determine if your facility is subject to stormwater effluent limitation guidelines

• Use your sector specific information to determine the limitations

• Write “No effluent limitations associated with this site”, if your SIC code is not associated with effluent limitations

Page 19

Monitoring Associated withDischarges to Impaired Waters

• Monitoring once a year is required if your facility discharges to an impaired water

• Determine if your receiving water is impaired by looking in the 303(d) List found and the Priority Surface Waters list at:

http://www.vtwaterquality.org/stormwater/docs/msgp/sw_pl_2006.partA.pdf http://www.vtwaterquality.org/stormwater/docs/msgp/sw_pl_2006.partB-G.pdf

Get assistance in determining whether or not your receiving water is impaired

Page 19 (continued)

Compliance Evaluation• Choose someone who is

knowledgeable of the operations and BMPs at the facility to inspect compliance with SWPPP once a year

Endangered Species Determine if your facility meets one

of the criteria listed in Appendix E of the general permit

General Requirements• Send a copy of your SWPPP to the

Stormwater Section, and keep the original at your facility

• Maintain your SWPPP by reviewing, and amending it when appropriate; i.e. construction, or a change in design

Page 20

Certification• Sign to certify your SWPPP

- signature must be from an “authorized representative”

This includes:

- President

- Treasurer

- Vice president, or a

- Person who performs similar policy or decision-making functions for the corporation

Page 21

Summary of Updates • Keep a record of changes made

to the SWPPP as a result of monitoring, inspections, or at the request of Agency personnel

Page 22

For more assistance in preparing your SWPPP, please feel free to contact us.

Thank You For Your Time

• Stormwater Section (802) 241-3777

• Stormwater@state.vt.us

• www.VTwaterquality.org