Stormwater Pollution Prevention Plan€¦ · metals and bacteria, and then carry these pollutants...

STORMWATER POLLUTION PREVENTION PLAN Central Garage

1756 US Route 302, Berlin, Vermont 05602

Date Written: June 2015 Last Update: November 2016 Prepared by: DuBois & King, Inc, for VTrans Maintenance and Operations Bureau, Environmental Program

Maintenance & Operations Bureau Environmental Program

Table of Contents

1. Introduction & Background .......................................................................................... 1

2. Pollution Prevention Team .......................................................................................... 3 3. Site Description ........................................................................................................... 6

3.1. Facility Information ................................................................................................ 6 3.2. Narrative Site Description ..................................................................................... 6 3.3. General Location Map .......................................................................................... 9

3.4. Natural Resources Map ...................................................................................... 10 3.5. Site Plan ............................................................................................................. 11 3.6. Description of Receiving Waters ......................................................................... 12 3.7. Precipitation Information ..................................................................................... 12 3.8. Inventory of Exposed Materials and Potential Pollutant Sources ........................ 14

3.9. Inventory of Past Spills and Leaks ...................................................................... 15 4. Non-Stormwater Discharges ..................................................................................... 16

4.1. Certification of Non-Stormwater Discharges ....................................................... 16

4.2. Allowable Non-Stormwater Discharges .............................................................. 16 5. BMP Identification ..................................................................................................... 16

5.1. Source Protection BMPs ..................................................................................... 16

5.2. Area Specific BMPs ............................................................................................ 16 Fueling Stations ....................................................................................... 16

Vehicle and Equipment Maintenance ...................................................... 17 Vehicle and equipment washing .............................................................. 17 Pavement Maintenance ........................................................................... 17

Chloride (Salt) Management .................................................................... 17 5.3. Site-wide BMPs .................................................................................................. 18

5.4. Spill Response .................................................................................................... 18 5.5. Vehicle and Equipment Washing ........................................................................ 19

5.6. Sediment and Erosion Control ............................................................................ 19 5.7. River Corridor Protection .................................................................................... 19 5.8. Structural BMPs .................................................................................................. 19

6. BMP Implementation ................................................................................................. 20 6.1. Routine Inspections ............................................................................................ 20

6.2. Employee Training .............................................................................................. 20 7. Monitoring Requirements .......................................................................................... 20

7.1. Quarterly Visual Monitoring ................................................................................ 20

7.2. Benchmark Monitoring ........................................................................................ 21 7.3. Effluent Limitations ............................................................................................. 21

7.4. Monitoring Associated with Discharges to Impaired Waters ............................... 21 8. Compliance Evaluation .............................................................................................. 21

9. Endangered Species ................................................................................................. 21 10. General Requirements ............................................................................................ 21

10.1. Record Keeping and Reporting ......................................................................... 21 10.2. Maintaining the Updated SWPPP ..................................................................... 22 10.3. Certification ....................................................................................................... 22

11. Summary of Updates ............................................................................................... 23

List of Appendices

APPENDIX A: Non-Stormwater Discharges APPENDIX B: Employee Training Records APPENDIX C: Quarterly Visual Monitoring Inspection Forms APPENDIX D: Comprehensive Annual Inspection Forms APPENDIX E: Site Management Guidance Documents APPENDIX F: VT ANR Stormwater Sampling Guide APPENDIX G: Project Site Photos APPENDIX H: Spill Emergency Procedures

Central Garage SWPPP Page 1

1. Introduction & Background

Introduction: This stormwater pollution prevention plan (SWPPP) covers the operations at the VTrans Central Garage in Berlin, VT. This SWPPP describes the facility and its operations, develops an inventory of potential pollutant sources, identifies controls and best management practices (BMP’s) for reducing the discharge of pollutants in stormwater runoff, and outlines measures for implementing and reviewing this plan.

This SWPPP follows the template developed by Vermont Agency of Natural Resources (VT ANR) for the Multi-Sector General Permit program under the National Pollutant Discharge Elimination System (NPDES). This permit is not required for District Garages; however, use of this template will provide a format to present information on and documentation of construction-related stormwater impacts, post-construction stormwater impacts, and pollution prevention and maintenance measures.

This Storm Water Pollution Prevention Plan (SWPPP), will:

Identify the SWPPP Administrator, Team Leader, and Team Member(s) with contact information and a list of their responsibilities

Describes the facility, with information on location and activities, a site map, and a description of the storm water drainage system

Identifies potential storm water contaminants Describes storm water management controls and various Best

Management Practices (BMP’s) needed to reduce pollutants in storm water discharges

Describes the facility’s monitoring plan Describes the implementation schedule and provisions for amendment of

the plan

Stormwater:

Stormwater runoff occurs when rainwater or snowmelt flows over the ground. Stormwater can pick up pollutants such as oil, grease, chemicals, nutrients, metals and bacteria, and then carry these pollutants into stormwater systems or directly into lakes, streams, rivers or wetlands. The management of stormwater runoff is at once a simple concept and a complex problem. Precipitation runs off impervious surfaces rather than infiltrating naturally into the soil. The cumulative impact resulting from the increased frequency, volume, and flow rate of stormwater runoff events can lead to destabilization of downstream channels and can also result in increased wash-off pollutant loading to receiving waters.


Precipitation runoff from construction and land disturbance activities are also considered Stormwater Runoff, including: clearing, grading, excavation, stockpiling of fill material and other activities, which expose soil related to projects that build, expand or replace or demolish something (such as a home, a store, a golf course, a road, etc.). The U.S. Environmental Protection Agency (EPA) does not include routine earth-disturbing activities that are part of the day-to-day operation of a completed facility, such as landscape maintenance or the grading of existing gravel roads.

Stormwater runoff from land disturbed by human activities can have a detrimental effect on the quality of surface waters. Such runoff may contain high levels of contaminants, such as sediment, suspended solids, nutrients (e.g. phosphorus and nitrogen), heavy metals, oil and grease, other toxins, pathogens or organic materials. After a rainfall event or during snowmelt, stormwater runoff carries pollutants into nearby Waters of the US (e.g. wetlands, streams, rivers, lakes, estuaries, and oceans). Either individually or combined with other pollutants, these discharges impair water quality which may then place beneficial uses and habitat at risk.

In addition to pollutants picked up by stormwater runoff from a rainfall event or snow melt, discharges from a storm water system may also contain wastes or wastewaters from “non-stormwater” sources, also referred to as “illicit discharges”. Sources of illicit discharges can include: sanitary wastewater illegally connected to a storm drain system; effluent from septic tanks; runoff from vehicle washing and other industrial wastewaters; improper disposal of vehicle maintenance toxics (such as used motor oil, fuel, lubricants, and paint); and spills from fueling stations, storage facilities, or other industrial activity.


2. Pollution Prevention Team

The Pollution Prevention Team (PPT) will be in charge of developing, implementing, and revising the SWPPP and ensuring that it is in compliance with the permit requirements.

VTrans District Garage Stormwater Program Administrator: Tyler Hanson, Operations Stormwater Technician Environmental Program, Maintenance and Operations Bureau (MOB) Highway Division Vermont Agency of Transportation (VTrans) National Life Drive, Montpelier, VT 05633-5001 Email: [email protected] Tel. 802-461-6440

Responsibilities:

1. Signatory authority 2. Administers overall compliance with permit programs with input from PPT

Leader and Member(s). 3. Facilitates initial site assessment, identification of BMP’s and

implementation of SWPPP. 4. Conducts annual on-site compliance review inspections and evaluations to

measure SWPPP effectiveness and makes recommendations for Program improvements.

5. Conducts annual refresher training to PPT Leader and Member(s).

Pollution Prevention Team (PPT) Leader: George McCool, VTrans District Technician Tel. 802-461-7841 Alternate: Dave Martin, Vtrans Maintenance Worker Tel. 802-505-8257 Jim Weston, Vtrans Maintenance Worker Tel. 802-505-5023

Responsibilities:

1. Coordinate and implement employee and personnel training 2. Maintain records and provide reports to SWPPP Program Administrator,

as required.

mailto:tyler.hanson@


3. Coordinate and implement regular site inspections and ongoing maintenance for Good Housekeeping Measures, BMPs, Pollution Prevention Measures, Spill Prevention Plans, and others.

4. Conduct regular evaluations to measure the effectiveness of the SWPPP and makes recommendations to the SWPPP Program Administrator on SWPPP improvements.

5. Conduct regular site inspections identifying pollutant sources and risks and take corrective actions to eliminate or minimize risks. Additional pollutant sources and risks (including corrective actions taken) must be reported to the SWPPP Program Administrator for inclusion in the SWPPP.

6. Coordinate and implement the required water quality monitoring and reporting to SWPPP Program Administrator.

7. Serve as primary “Spill Response Coordinator” and conducts all required inspections, maintenance, and reporting under the “Spill Prevention Plan” in coordination with and under the direction of the VTrans Operations Hazardous Materials & Waste Coordinator (see contact information under Team Members(s)).

8. Develop and implement a preventative site maintenance “good housekeeping” program.

9. Maintain spill response materials in good working order. 10. Maintain spill response equipment inventory. 11. Maintain the SWPPP “Binder” on-site and accessible with all reports and

documents in an organized manner so it can be reviewed by VTrans at the time of a site inspection.

12. Coordinates and implements employee and personnel training.

PPT Support Member - Operation & Maintenance:

George McCool, VTrans District Technician Tel. 802-461-7841 Alternate: Dave Martin, Vtrans Maintenance Worker Tel. 802-505-8257 Jim Weston, Vtrans Maintenance Worker Tel. 802-505-5023

Responsibilities:

1. Provide assistance to the VTrans District Garage Stormwater Program Administrator, PTT Leader, or any other PTT Member as requested in performing the following activities:

a. Repairing or replacing spill response materials/equipment inventory.


b. Assisting in the on-site daily implementation and maintenance of BMP’s

c. Provide site monitoring and inspection functions in the absence of the SWPPP Program Team Leader

d. Assist Team Leader in performing its Responsibilities as requested e. Assist in spill response

2. All permanent full time employees are expected to be members of the stormwater team and attend annual training.

PPT Support Member - Hazardous Materials and Waste Management:

Andy Shively, Hazardous Materials & Waste Coordinator, Operations Environmental Program Vermont Agency of Transportation (VTrans) Operations Division – Technical Services Section One National Life Drive, Montpelier, VT 05633-5001 Email: [email protected] Tel. 802-828-2797; Cell 802-229-8740; Pager 802-250-4666 Alternate (regular business hours): Mike McAllister, Operational Safety Coordinator, Operations Safety Program (same address) Email: [email protected] Tel. 802-828-3967; Cell 802-498-7108

Responsibilities: 1. Administers Spill Prevention Plan and other Hazardous Materials and

Waste Management activities to ensure regulatory compliance under all applicable Federal and State Programs.

2. Provides annual site inspections and training for all Hazardous Materials and Waste Management activities.

mailto:[email protected]

mailto:%[email protected]


3. Site Description

3.1. Facility Information

Street Address: 1756 US Route 302 City: Berlin State: Vermont Zip: 05602

Latitude: 44-14-0 Longitude: 72-33-12

Facility Operator Contact Information (same as “PTT Leader”):

VTrans District Technician George McCool Tel. 802-461-7841;

Alternate: Dave Martin, Vtrans Maintenance Worker Tel. 802-505-8257 Jim Weston, Vtrans Maintenance Worker Tel. 802-505-5023

3.2. Narrative Site Description

General Description The garage is located on an approximately 8.1-acre parcel owned by VTrans on VT Route 302 (Barre-Montpelier Road) in Berlin, Vermont. The site includes open storage areas, parking lots, and buildings resulting in approximately 5.6 acres of impervious surfaces, representing approximately 70% of the site. The property drains to two receiving waters: Pond Brook (also referred to as Benjamin Falls Brook) bisects the southern portion of the site and the Stevens Branch, which runs along the eastern boundary of the site. The river corridor for these two waters extends across the garage property (Refer to Maps in Section 3.3 – 3.5 and see further guidance in Section 5.7.) Stormwater Conveyance and Discharge Points The stormwater conveyance system for the site consists of a combination of overland sheet flow, grass swales, and closed drainage systems of catch basins and drainage pipes, which have been mapped and are shown on the Site Plan in Section 3.5 of this SWPPP. This map also shows flow of stormwater across the


site and the discharge points where stormwater then leaves the property. Those discharge points are as follows:

Discharge Point #1: The southwest corner of the property, which includes a portion of parking area sheet flows to an infiltrating grass swale that was originally installed as a rain garden. In its current configuration, the swale is primarily mowed grass, however the invert of the culvert at the outlet of the swale is higher than the base of the swale. This allows water to pond within the swale and infiltrate into the ground. Larger storm events will result in a high enough water elevation to drain through the culvert. At the culvert outlet, a standard grass swale conveys the water to Discharge Point 1 at Pond Brook. Discharge Point #2: Discharge Point 2 is located on Pond Brook at the outlet of a culvert that is connected to a single catch basin. Runoff to this point originates from the southeastern portion of the site and includes areas with parking, small sand pile, and limited paint storage. Discharge Point #3: Discharge Point 3 is located at the end of a series of catch basins and drainage pipes run between the garage and laboratory building and then turn and run between the warehouse and traffic shop to an outlet at the Stevens Branch. Areas draining to this system include the garage, laboratory building, traffic shop, washing area, fueling area, open storage areas and parking. Discharge Point #4: A separate closed drainage system is located on the northern portion of the site and Discharge Point 4 is located at this system’s outlet to the Stevens Branch, just behind the sheds. Drainage to this point originates from parking areas, the warehouse, and two sheds. Operations The garage has 6 buildings, which include the central garage building with offices, warehouse, two sheds, and classroom building. The garage has regular operating hours between 6 am – 4:30 pm on weekdays (M – F). Intermittently during the winter or other major storms, the garage has operations that occur 24 hours a day. Fueling Central Garage includes a 500-gallon above ground diesel tank for fueling as well as a diesel generator which holds 150 gallons. There is a spill kit located at the tank and the garage has procedures in place for fueling guidelines as well as emergency numbers and notification process.


Maintenance Activities Equipment repair and maintenance takes place in the main garage building. It is within this area that engine oil, lubricants, fluids, coolants and cleaning solvents are stored. Spill procedures are in place for this garage. Washing Vehicles and equipment are washed with biodegradable soap in the designated area (See Site Plan in Section 3.5). From this area, wash water flows to the closed drainage system that has its outlet at Discharge Point 2. Guidelines with best management practices for wash water from vehicle washing have been developed by VT ANR Department of Conservation and are included in Appendix E. Floor Drains There are eight floor drains located within the main garage building and there are also floor drains located in the traffic shop. The floor drains are connected to oil/water separator tanks that drain to the municipal sewer system.


3.3. General Location Map


3.4. Natural Resources Map


3.5. Site Plan


3.6. Description of Receiving Waters

Receiving Water Name(s): Pond Brook & Stevens Branch

Discharge Points: 4

Applicable Vermont Water Quality Standards: Class B

Impaired Status: Not Impaired

3.7. Precipitation Information

Based on Tables 1 and 2 taken from Appendix C of the Vermont ANR August 2006 MSGP 3-9003, the garage can be expected to see an average annual precipitation of 44.18 inches. The wettest months of the year are June, July, August, and September, with August topping the list with average monthly rainfall of 4.73 inches. The garage is located in Washington County (Division 1: Northeastern). Rainfall amounts are shown on Tables 1 and 2 below.


3.8. Inventory of Exposed Materials and Potential Pollutant Sources

Table 1: Inventory of Site Areas and Activities Exposed to Stormwater

Map Key

Activity/ Area of the facility

Significant Materials

Amount (Approx.)

Discharge Point

Open Storage

Outdoor storage of equipment &

materials

Oil, heavy metals, organics

Amounts contained within equipment

#2, #3

Washing Areas

Washing of vehicles

Vehicles and the fuel they carry

Amounts contained within vehicles

#2

Vehicles hydraulic fluid


Parking Outdoor parking

of vehicles

Sand/salt Applied as needed

for winter conditions #1 – 4

Vehicles and the fuel they carry


Sand Area of stockpiled

sand Sediment Varies #2

Used Concrete

Areas of stockpiled

crushed concrete

Sediment, cementatious

material Varies #4


Table 2: Significant Materials Used Onsite

Trade Name Material

Chemical/ Physical Description

Stormwater Pollutants

Diesel Fuel

Clear yellowish liquid Petroleum distillate, oil & grease, naphthalene, xylene

Engine Oil

Amber liquid petroleum hydrocarbon

Petroleum distillate, mineral oil, heavy metals

Lubricants

Black oily liquid hydrocarbon Oil & grease, lead, cadmium

Hydraulic oil/fluids

Brown oily petroleum hydrocarbon

Mineral oils

Brake fluid

Dark colored liquid, glycol-based

Ethylene glycol

Antifreeze/coolants

Clear green/yellowish liquid Ethylene glycol, propylene glycol, heavy metals

Transmission fluid

Red liquid Mineral oil, glycols, heavy metals, petroleum distillates

Unleaded gasoline

Clear liquid with strong hydrocarbon odor

Hydrocarbons, toluene, ethyl alcohol, xylene, ethylbenzene, benzene, naphthalene

Propane Colorless gas, liquid under pressure

Petroleum distillate, propylene, butane

Salt

White crystalline powder or granules

Sodium formate or potassium acetate

Sand

Granular material Sediment

3.9. Inventory of Past Spills and Leaks

Central Garage has had a history of spills with a total of 5 spills listed between 1990 and 2000. More recently, 5 gallons of hydraulic oil was spilled in 2013 due to a truck line failure. The spill was documented and reported to ANR as # WMD317.2013. Impacted asphalt areas were cleaned by mopping oil with pads and using granular sorbent. Central Garage is also a listed hazardous waste site (91-1063) with ongoing remediation and groundwater monitoring. Remediation efforts currently being advanced include excavation, replacement, and stabilization of a 300’ stretch of contaminated stream bank along the Stevens Branch. Installation of a soil vapor extraction (SVE) system has also been proposed for a portion of the site, which will serve as a means to test if further SVE is warranted on the site. A future site-


wide Corrective Action Plan (CAP) may identify additional remediation measures for the property.

4. Non-Stormwater Discharges

4.1. Certification of Non-Stormwater Discharges

There are no known or observed non-stormwater discharges leaving this facility. (Please refer to Certification under Appendix A.)

4.2. Allowable Non-Stormwater Discharges

There are no known or observed non-stormwater discharges leaving this facility.

5. BMP Identification

5.1. Source Protection BMPs

Preventative maintenance– Vehicles and equipment to be used at the garage are to be kept in good working order with attention paid to ensure that any leaks are promptly taken care of. Good Housekeeping – Maintenance of vehicles and equipment to be conducted in designated areas that are kept free of clutter and debris. Significant materials to be labeled, organized, and placed within containment as appropriate. Spill response – There is a Spill Prevention Plan in place for the garage which includes procedures to minimize the contamination associated with any spills or leaks that may occur on the site.

5.2. Area Specific BMPs

Fueling Stations

BMP Responsible Party

Discourage topping off fuel tanks VTrans PTT Leader

Provide spill kits at all fueling stations VTrans PTT Leader

Use dry cleanup methods for spills VTrans PTT Leader

Use proper spill control methods as defined in the Garage’s Spill Prevention Plan

VTrans PTT Leader


Vehicle and Equipment Maintenance BMP Responsible Party

Regularly check for leaking fluids and use pans to collect leaks that do occur

VTrans PTT Leader

Do not pour waste fluids into drains VTrans PTT Leader

Segregate and label waste materials VTrans PTT Leader

Encourage recycling of waste fluids, oils, engines, and batteries

VTrans PTT Leader

Encourage use of non-toxic materials when feasible

VTrans PTT Leader

Conduct maintenance operations in designated locations and under cover

VTrans PTT Leader

Vehicle and equipment washing


Limit washing to designated areas VTrans PTT Leader

Encourage use of non-toxic cleaning agents when possible

VTrans PTT Leader

Limit high pressure washing systems VTrans PTT Leader

Pavement Maintenance


Encourage use of non-coal tar-based sealants for pavement crack repair

VTrans PTT Leader

Chloride (Salt) Management


Salt piles stored under cover and inside sheds VTrans PTT Leader

Check trucks for leaks of solid salt VTrans PTT Leader

Avoid overloading trucks and buckets used to transport solid salt

VTrans PTT Leader

Pick up any dropped piles of salt and return to piles inside sheds

VTrans PTT Leader


5.3. Site-wide BMPs


Store significant materials under cover, to the extent possible

VTrans PTT Leader

Long-term parked vehicles and equipment will be checked for fluid leaks periodically.

VTrans PTT Leader

Clean spills up immediately using dry methods. Spill areas are never washed down with water

VTrans PTT Leader

Keep inventory of catch basin/drop inlet spill covers and place over inlets in the event of spills

VTrans PTT Leader

Spring inspections will be conducted to check for snowmelt areas and clean up of left-over debris.

VTrans PTT Leader

Conduct reporting under EPA Tier II Chemical Inventory Reports

VTrans PTT Leader

5.4. Spill Response

The SWPPP will be modified within 14 days of knowledge of a spill to include information regarding the nature, date, and cause of the release. The plan will be modified with measures to prevent reoccurrence and to improve response. The site has a separate spill prevention plan specific to the facility and all employees in the district receive training on spill prevention and response. The spill prevention plan, in part, includes information on the following topics: FUELING At all times fueling operations will be monitored. At no time will the fuel delivery hose be left unattended. Any overfill will be immediately reported to a supervisor. SPILLS The supervisor will follow the Agency Spill Reporting Procedures (see Appendix H). All Agency resources will be used to minimize the impact of a spill, using absorbent pads and booms. Sand will be used for emergency dikes. All employees of this facility are made aware of this plan. All spills over two gallons


must be reported to either Andy Shively (pager # 802-250-4666) or Mike McAllister (cell #802-498-7108). Environmental Products & Services, (802) 862-1212, can be used for spills beyond the ability of the on-site personnel to mitigate.

5.5. Vehicle and Equipment Washing

As described in Section 3.2 above, there is washing of vehicles in designated areas.

5.6. Sediment and Erosion Control

Prior to beginning a construction project disturbing greater than one acre the facility will contact Jeff Ramsey, VTrans Environmental Specialist, at 802-828-1278 to determine if a construction general permit (CGP) is necessary. The primary measure that will be utilized at the Central Garage District Garage includes maintaining stable ground surfaces with good grass or vegetated cover for unpaved areas of the site.

5.7. River Corridor Protection

As described in Section 3.2 and shown on the Natural Resources Map in Section 3.4, much of the Central Garage is located within the defined river corridor. Prior to beginning a construction project or placing substantial material at the facility, coordinate with Tyler Hanson at 802-461-6440 to determine what special river corridor protections may be required.

5.8. Structural BMPs

While the site does not include permitted stormwater treatment measures, the site does include a grass swale.

Structure: Grass Swale (infiltrating – rain garden)

Discharge Point: Discharge Point #1

Area(s) Treated: Parking areas and adjacent roadways

Pollutants Removed: Sediment

Maintenance Requirement(s): Remove accumulated sediment as necessary, inspect outlet for signs of erosion, reseed as necessary to ensure adequate vegetation and re-grade adjacent areas as necessary to ensure proper drainage flow. Frequency: annual


6. BMP Implementation

6.1. Routine Inspections

Facility inspections will be performed quarterly by the VTrans PTT Leader. If stormwater BMPs are found to be functioning incorrectly, maintenance will be performed before the next anticipated storm event, or as necessary to maintain effectiveness of the stormwater controls. A sample inspection form and records of past inspections will be kept in Appendix C of the SWPPP.

6.2. Employee Training

Topics to be included in employee training:

Introduce Pollution Prevention Team and discuss need for the SWPPP

Spill response procedure

Review of past spills

Review of good housekeeping procedures

Proper material handling procedures

Proper disposal or recycling of materials

Be sure employees know where cleaning materials and spill kits are located

Review sources of stormwater pollutants used onsite

Familiarize employees with drainage routes near areas where industrial materials are handled

Review of site specific BMP’s, their maintenance requirements and need for additional BMP’s.

Review monitoring, inspection, record keeping, and reporting requirements. All employees will attend a training session every year. New employees will be trained within three months of hire. Records of attendance are to be kept with this plan using Appendix B found at the end of this plan.

7. Monitoring Requirements

Ultimately, the goal of this SWPPP it is to protect the quality of water resources. To evaluate the effectiveness of the measures described here, the following monitoring activities will be conducted on the stormwater discharges at the Central Garage District Garage. Monitoring results will be used to regularly reassess the impact of pollutant sources and the need for best management practices (BMPs). The SWPPP will be updated and improved throughout the term of the permit and these updates will be informed by the results of monitoring. All monitoring results and SWPPP modifications shall be kept in the SWPPP on-site with a copy sent to the VTrans PTT Administrator.

7.1. Quarterly Visual Monitoring


Each discharge point on the site will be examined quarterly by the VTrans PPT Leader for evidence of contamination during a runoff event. Monitoring will take place within the first 30 minutes of a precipitation or snowmelt event if possible, but no more than 60 minutes after onset. Precipitation events must be greater than 0.1 inches in magnitude and occur at least 72 hours after the last runoff-producing event. More detailed instructions, monitoring forms and results of quarterly visual monitoring can be found in Appendix C.

7.2. Benchmark Monitoring

Benchmark monitoring at this garage is not required.

7.3. Effluent Limitations

There are no effluent limitations with this site.

7.4. Monitoring Associated with Discharges to Impaired Waters

The facility does not discharge to impaired waters.

8. Compliance Evaluation

A comprehensive site evaluation will be performed every year by the VTrans Program Administrator (PTT Administrator). This inspection will include all exposed areas identified in Table 1 of Section 3.8 of this plan for evidence of stormwater pollution. The results of the plan will be documented in a report containing at minimum: the date, the person(s) making the inspection, the scope of the inspection, observations relating to the discharge of pollutants from the facility, BMPs needing maintenance, BMPs which failed to operate as designed, locations where additional BMPs are needed, corrective actions taken, and any updates to the SWPPP. Copies of past inspection reports are kept in Appendix D.

9. Endangered Species

A review of the VANR Natural Resource Atlas indicates that there are no species of concern at the Central Garage District Garage. (See the Natural Resource Map in Section 3.4 of this SWPPP.)

10. General Requirements

10.1. Record Keeping and Reporting

An original copy of this SWPPP will be maintained onsite. Records pertaining to inspections, monitoring, maintenance, employee trainings, compliance


evaluations, and spills will also be kept onsite with the SWPPP with a copy provided to the PTT Administrator.

10.2. Maintaining the Updated SWPPP

This SWPPP will be amended if inspections or monitoring should indicate a deficiency, or Agency personnel determine that it is not effective at controlling stormwater pollutant discharges. The plan will also be amended if changes occur to the facilities layout or operations. A history of amendments will be kept with this plan in Section 11.

10.3. Certification

I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system or those persons directly responsible for gathering the information, the information is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. Name (print):__Tyler Hanson________________ Title: __Operations Stormwater Technician__________ Signature: ___________________________ Date Signed: __________________


11. Summary of Updates

Instructions: Keep a record of changes to the SWPPP that are required as a result of monitoring, inspections, or at the request of Agency personnel.

Date Plan Amended

Summary of Updates

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