A02 TE3v2 - RIPDES Permit_RI0021555_RIANG_Final 2021.pdf

RHODE ISLAND

DEPARTMENT OF ENVIRONMENTAL MANAGEMENT

OFFICE OF WATER RESOURCES

235 Promenade Street, Providence, Rhode Island 02908

December 28, 2021

CERTIFIED MAIL

Col Adam G. Wiggins, Commander Rhode Island Air National Guard/143'd AW/EM 2 Hercules Drive Quonset ANGB North Kingstown, RI 02852-7 502

RE: Rhode Island Air National Guard (RIANG)/143'• Airlift Wing (AW) Final Permit No. RI0021555

Dear Colonel Wiggins:

Enclosed is the final Rhode Island Pollutant Discharge Elimination System (RIPDES) Permit issued for the RIANG/143'" AW site located at 2 Hercules Drive in North Kingstown, RI. State regulations, promulgated under Chapter 46-12 of the Rhode Island General Laws of 1956, as amended, require this pe1mit to become effective on the date specified in the permit.

Also enclosed is information relative to hearing requests and stays of RIPDES Permits.

We appreciate your cooperation throughout the development of this permit. Should RIANG have any questions concerning this permit, feel free to contact Aaron Mello of the State Permits Staff at ( 40 I) 222- 47/Jtension 2777405.

Sincer:ly,, j---;? }/ __ _ f lv11 ltY -//vf?---

J/e;h B. Haberek, P.E.

Acting Administrator of Surface Water Protection Office of Water Resources

JBH:am

Enclosures cc: Connie McGreavy, RIANG (Electronic Copy) Richard Moore, RIANG (Electronic Copy) Maj Kathleen Mahoney, RIANG (Electronic Copy) David Turin, EPA Region I (Electronic Copy) Crystal Charbonneau, DEM/OWR (Electronic Copy) Traci Pena, DEM/OWR (Electronic Copy)

Telephone 401.222.4700 I www.dem.ri.gov ! Rhode Island Relay 711 RIANG•2021 Final Cover

Col Adam G. Wiggins December 28, 2021 Page 2 of2

RESPONSE TO COMMENTS

NO SIGNIFICANT COMMENTS WERE RECEIVED ON THE DRAFT PERMIT FOR THIS

FACILITY; THEREFORE, NO RESPONSE WAS PREPARED.

HEARING REQUESTS

If you wish to contest any of the provisions of this permit, you must request a formal hearing within thirty

(30) days of receipt of this letter. The request should be submitted to the Administrative Adjudication Division at the following address:

Mary Dalton, Clerk Department of Environmental Management

Office of Administrative Adjudication 235 Promenade Street

3rd Floor, Rm 350 Providence, RI 02908

Any request for a formal hearing must conform to the requirements of§ 1.50 of the Regulations for the Rhode Island Pollutant Discharge Elimination System (RI Code of Regulations; 250-RICR-150-10-1.50).

ST A YS OF RIPDES PERMITS

Should the Department receive and grant a request for a formal hearing, the contested conditions of the permit will not automatically be stayed. However, the pennittee, in accordance with § 1.51 of the Regulations for the Rl1ode Island Pollutant Discharge Elimination System (RI Code of Regulations; 250-RICR-150-10-1.51 ), may request a temporary stay for the duration of adjudicatory hearing proceedings. Requests for stays of permit conditions should be submitted to the Office of Water Resources at the following address:

Joseph B. Haberek, P.E.

Acting Administrator of Surface Water Protection

Office of Water Resources 235 Promenade Street

Providence, Rhode Island 02908

All uncontested conditions of the permit will be effective and enforceable in accordance with the provisions of § 1.50 of the Regulations for the Rhode Island Pollutant Discharge Elimination System (RI Code of Regulations; 250-RICR-150-10-1.50).

RIANG-2021 Final Cover

AUTHORIZATION TO DISCHARGE UNDER THE

Permit No. RI0021555

RHODE ISLAND POLLUTANT DISCHARGE ELIMINATION SYSTEM

In compliance with the provisions of Chapter 46-12 of the Rhode Island General Laws, as amended, the

Rhode Island Air National Guard is authorized to discharge from a facility located at to receiving waters named

Quonset State Airport 2 Hercules Drive

North Kingstown, RI 02825

Frys Pond in accordance with effluent limitations, monitoring requirements and other conditions set forth herein.

This permit shall become effective on January 1, 2022.

This permit and the authorization to discharge expire at midnight, five (5) years from the effective date.

This permit supersedes the permit issued on October 27, 2015 and modified on December 14, 2016.

This permit consists of 24 pages in Part I including effluent limitations, monitoring requirements, etc. and 10 pages in Part II including General Conditions.

Signed,1jhis 28th day of December 2021.

%/4:z, w----idseph B. Haberek, P.E., Acting Administrator of Surface Water Protection ~-u:!Uffice of Water Resources Rhode Island Department of Environmental Management Providence, Rhode Island

RI0021555_RIANG_Final 2021

PART I

A. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS

Permit No. RI0021555

1. During the period beginning on the effective date and lasting through permit expiration, the permittee is authorized to discharge from Outfall serial number 1 OOA. Such discharges shall be limited and monitored by the permittee as specified below:

Effluent Discharge Limitations Characleristic Quantity - lbs./day Concentration - specify units

Average Maximum Average Average Maximum Mon.!b!Y.. ____Qm

--MGD

Monthly Weekly ____Qm

Flow

Oil & Grease 15 mg/I

TSS 20 mg/I

Benzene --- ug/I

Toluene --- ug/I

Ethyl benzene --- ug/I

Total Xylenes --- ug/I

Polynuclear Aromatic Hydrocarbons (PAHs) Acenaphthene --- ug/I

Acenaphthylene --- ug/I

Anthracene --- ug/I

Benzo (a) anthracene --- ug/I

Benzo (a) pyrene --- ug/I

Benzo (b) fluoranthene --- ug/I

Benzo (ghi) perylene --- ug/I

Benzo (k) fluoranthene --- ug/I

RI0021555_RIANG_Final 2021

.Monitoring Requirement

Measurement Frequency

Continuous

1/Quarter

1/Quarter

1/Quarter

1/Quarter

1/Quarter

1/Quarter

1/Quarter

1/Quarter

1/Quarter

1/Quarter

1/Quarter

1/Quarter

1/Quarter

1/Quarter

Sample -1.Ylli, Continuous'

Grab2

Grab2

Grab2

Grab2

Grab2

Grab2

Grab2

Grab2

Grab2

Grab2

Grab2

Grab2

Grab2

PART!

Permit No. RI0021555

1. During the period beginning on the effective date and lasting through permit expiration, the permittee is authorized to discharge from Outfall serial number 100A. Such discharges shall be limited and monitored by the permittee as specified below:

Effluent Cb_ilracteristic

Chrysene

Dibenzo (a,h) anthracene

Fluoranthene

Fluorene lndeno (1,2,3-cd) pyrene

Naphthalene

Phenanthrene

Pyrene

Discharge Limitations Quantity - lbs./day Concentration - specify units

Average Maximum Average Average Maximum Month]y_ ____Q§jjy_ Montl]ly_ Weekly Daily

--- ug/I

--- ug/I

-- ug/I

--- ug/I

--- ug/I

--- ug/I

-- ug/I

--- ug/I

--- Signifies a parameter which must be monitored and data must be reported; no limit has been established at this time.

1 Flow shall be determined by the use of a continuous flow monitor.

Monitoring Requirement

Measurement Sample Frequency ~

1/Quarter Grab'

1/Quarter Grab'

1/Quarter Grab2

1/Quarter Grab'

1/Quarter Grab2

1/Quarter Grab2

1/Quarter Grab'

1 /Quarter Grab2

2 One (1) sample shall be taken during wet weather. Prior to the upgrades noted below, wet weather samples must be collected during the first 30 minutes from discharges resulting from a storm event that is greater than 0.1 inch of rainfall in a 24-hour period and at least 72 hours from the previously measurable (greater than

0.1 inch of rainfall in a 24-hour period) storm event. If this is not feasible, wet weather samples may be taken within the first hour of discharge and noted on the Discharge Monitoring Report.

Samples taken in compliance with the monitoring requirements specified above shall be taken at the following location: Outfall 1 00A (Storm water from the Petroleum based fuels, oil or lubricants (POL) Facility yard area/tanker truck parking area after treatment and prior to commingling with off-site storm water inputs. (1) Prior to the POL Facility upgrades, the sampling location mus\ be immediately downstream from the 8,000-gallon oil/water separator. (2) Following the POL Facility upgrades, storm water will be collected immediately downstream from the Jellyfish Filter.

PART I

Permit No. RI0021555

2. During the period beginning on the effective date and lasting through permit expiration, the permittee is authorized to discharge from Outfall serial number 100B. Such discharges shall be limited and monitored by the permittee as specified below:

Effluent Discharge Limitations Ch;Jrncteristic Quantity - lbs.iday Concentration - specify units

Average Maximum Average Average Maximum Mon.\b!Y._ Daily

--- MGD

Monthly_ Weekly _Qll.l)y

Flow

Oil & Grease 15 mg/I

TSS 20 mg/I

Benzene --- ug/I

Toluene --- ug/I

Ethyl benzene --- ug/I

Total Xylenes --- ug/I

Polynuclear Aromatic Hydrocarbons (PAHs) Acenaphthene -- ug/I

Acenaphthylene --- ug/I

Anthracene --- ug/I

Benzo (a) anthracene --- ug/I

Benzo (a) pyrene --- ug/I

Benzo (b) fluoranthene --- ug/I

Benzo (ghi) perylene --- ug/I

Benzo (k) fluoranthene --- ug/I

RI0021555_RIANG_Final 2021

Monitoring Requirement

Measurement Frequency

Continuous

1/Quarter

1/Quarter

1/Quarter

1/Quarter

1/Quarter

1/Quarter

1/Quarter

1/Quarter

1/Quarter

1/Quarter

1/Quarter

1/Quarter

1/Quarter

1/Quarter

Sample

Continuous'

Grab2

Grab2

Grab2

Grab2

Grab2

Grab2

Grab2

Grab2

Grab2

Grab2

Grab2

Grab2

PARTI

A EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS

Permit No. RI0021555

2. During the period beginning on the effective date and lasting through permit expiration, the permittee is authorized to discharge from Outfall serial number 1008. Such discharges shall be limited and monitored by the permittee as specified below:

Effluent Characteristic

Chrysene

Dibenzo (a,h) anthracene

Fluoranthene

Fluorene lndeno (1,2,3-cd) pyrene

Naphthalene

Phenanthrene

Pyrene

Discharge Limitations Quantity - lbs./day Concentration - specify units

Average Maximum Average Average Maximum fl/lQnthly_ Daily M9nthly_ Weekly _J2§]!y_

--- ug/I

--- ug/I

--- ug/I

--- ug/I

--- ug/I

--- ug/I

--- ug/I

--- ug/I

--- Signifies a parameter which must be monitored and data must be reported; no limit has been established at this time.

1 Flow shall be determined by the use of a continuous flow monitor.

Monitoring Requirement

Measurement Sample Frequency ~

1/Quarter Grab2

1/Quarter Grab2

1/Quarter Grab2

1/Quarter Grab2

1/Quarter Grab2

1/Quarter Grab2

1/Quarter Grab2

1/Quarter Grab2

2 One (1) sample shall be taken during dry weather. Dry weather samples must be collected during the controlled release of storm water within the Petroleum-based fuels, oil or lubricants (POL) Facility secondary containment area(s) with proper allowances for hydraulic detention time (time for flow to travel from the oil/water separator to the sampling location).

Samples taken in compliance with the monitoring requirements specified above shall be taken at the following location: Outfall 100B (storm water from the POL Facility secondary containment area(s) after treatment and prior to commingling with off-site storm water inputs. (1) Prior to the POL Facility upgrades, the sampling location must be immediately downstream from the 8,000-gallon oil/water separator. (2) Following the POL Facility upgrades, storm water will be collected immediately downstream from the Jellyfish Filter.

3. a.

The pH of the effluent shall not be less than 6.5 nor greater than 9.0 standard units, unless these values are exceeded due to natural causes.

b. The discharge shall not cause visible discoloration of the receiving waters.

c. The discharge shall not cause odors in the receiving water to such a degree as to create a nuisance or interfere with the existing or designated uses.

d. The effluent shall contain neither a visible oil sheen, foam, nor floating solids at any time.

e. The discharge shall not cause stream bank erosion and/or any soil erosion and sedimentation.

4. The permittee shall not add chemicals (including but not limited to disinfecting agents, detergents, emulsifiers, and "bioremedial agents including microbes") to the collection and treatment system without prior approval from DEM.

5. The permittee shall not discharge any sludge and/or bottom deposits from any storage tank, basin and/or diked area to the receiving water. Examples of storage tanks and/or basins include, but are not limited to: catch basins, stilling basins, oil/water separators, observation basins, petroleum product storage tanks, storage tanks collecting spills, and tank truck loading rack sumps.

6. This permit does not authorize discharges to the separate storm sewer system or to waters of the State from floor drains and trench drains located inside of buildings and/or hangars.

7. The permit does not authorize discharges to the separate storm sewer system or to waters of the State from vehicle, aircraft, or equipment washing activities, except for clear water rinses of C-130J aircraft as documented in the facility's Storm Water Pollution Prevention Plan (SWPPP) required in Part I.C. and as an allowable non-storm water discharge in Part I.A.14.

8. This permit does not authorize the discharge of sanitary wastewater to the separate storm sewer system or to waters of the State.

9. The discharge of contaminated groundwater, including contaminated groundwater from infiltration/inflow, into the storm water collection system or into any oil/water separator is prohibited.

10. There shall be no discharge of tank bottom draw-off water (water which separates from product during storage and settles to the tank bottom) to the separate storm sewer system or to waters of the State.

11. There shall be no discharge of tank and/or piping hydrostatic-test water, and tank and/or pipe cleaning residual/debris associated with hydrostatic-testing procedures to the separate storm sewer system or to waters of the State.

12. Discharges from rubber removal practices and dry weather discharges of deicing/anti icing chemicals are not authorized by this permit. Dry weather discharges are those discharges generated by processes other than storm water runoff, snowmelt runoff, and surface runoff and drainage. Discharges of process wastewater or spills in snowmelt runoff are not authorized by this permit.

13. There shall be no discharge offire protection foam, either in concentrate form or as foam dilute with water, not associated with firefighting activities to the separate storm sewer system or to waters of the State.

14. Unless identified by the permiltee or the DEM as significant sources of pollutants to waters of the United Stales, the following non-storm water discharges are authorized under this permit to enter the storm water drainage system: discharges from firefighting activities; fire hydrant flushings; routine external building washdown / power wash water that does not use detergents or hazardous cleaning products (such as those containing bleach, hydrofluoric acid, muriatic acid, sodium hydroxide, nonylphenols); lawn watering;

uncontaminated groundwater; springs; air conditioning condensate; potable waterline flushings; clear water rinses of C-130J aircraft; irrigation drainage; foundation or footing drains where flows are not contaminated with process materials, such as solvents, or contaminated by contact with soils, where spills or leaks of toxic or hazardous materials have occurred; water sprayed for dust control or at a truck load wet-down station;

incidental windblown mist from cooling towers that collects on rooftops or adjacent portions of the facility, but NOT intentional discharges from the cooling tower (e.g., "piped" cooling tower blowdown or drains); uncontaminated utility vault dewatering;

dechlorinated water line testing water; hydrostatic test water that does not contain any treatment chemicals and is not contaminated with process chemicals; and discharges from washing of vehicles provided: chemicals, soaps, detergents, hazardous cleaning products (such as those containing bleach, hydrofluoric acid, muriatic acid, sodium hydroxide, nonylphenols), steam, or heated water are not used; cleaning is restricted to the outside of the vehicle (e.g., no engines, transmissions, undercarriages, or truck beds); or washing is not used to remove accumulated industrial materials, paint residues, heavy metals or any other potentially hazardous materials from surfaces. If any of these discharges may reasonably be expected to be present and to be mixed with storm water discharges, they must be specifically identified and addressed in the facility's Storm Water Pollution Prevention Plan (SWPPP) required in Part I.C.

15. All existing manufacturing, commercial, mining, and silvicultural dischargers must notify the Director as soon as they know or have reason to believe:

a. That any activity has occurred or will occur which would result in the discharge, on a routine or frequent basis, of any toxic pollutant which is not limited in the permit, if that discharge will exceed the highest of the following "notification levels":

(1) One hundred micrograms per liter (100 ug/I);

(2) Two hundred micrograms per liter (200 ug/I) for acrolein and acrylonitrile;

five hundred micrograms per liter (500 ug/I) for 2,4-dinitrophenol and for 2-methyl-4,6-dinitro-phenol; and one milligram per liter (1 mg/I) for antimony;

(3) Five (5) times the maximum concentration value reported for that pollutant in the permit application in accordance with 40 C.F.R.

s122.21 (g)(7); or

(4) Any other notification level established by the Director in accordance with 40 C.F.R. s122.44(f) and Rhode Island Regulations.

b. That any activity has occurred or will occur which would result in the discharge, on a non-routine or infrequent basis, of any toxic pollutant which is not limited in the permit, if that discharge will exceed the highest of the following "notification

RI0021555_RIANG_Flnal 2021 levels":

(1) Five hundred micrograms per liter (500 ug/I);

(2) One milligram per liter (1 mg/I) for antimony;

Permit No. RI0021555

(3) Ten (10) times the maximum concentration value reported for that pollutant in the permit application in accordance with 40 C.F.R.

s122.21 (g)(7); or

( 4) Any other notification level established by the Director in accordance with 40 C.F.R. s122.44(f) and Rhode Island Regulations.

c. That they have begun or expect to begin to use or manufacture as an intermediate or final product or by-product any toxic pollutant which was not reported in the permit application.

16. This permit serves as the State's Water Quality Certificate for the discharges described herein.

B. OPERATION AND MAINTENANCE

1. All surface runoff from process or work areas at the facility shall be contained and diverted to the on-site oil/water separators. The on-site oil/water separators consist of a 8,000-gallon separator located in the Petroleum-based Fuels, Oils, or Lubricants (POL) Facility and a 25,000-gallon separator located in the infield area adjacent to aircraft ramp area. Process or work areas are defined for the purpose of this permit as all of those areas subject to spills and leaks of raw materials or products (i.e., secondary containment areas, fueling areas, aircraft parking apron, loading or unloading areas, yard areas, etc.).

2. The release of runoff from any secondary containment area or holding basin shall be controlled so that this discharge alone or in combination with any other sources of wastewater does not exceed the optimum design flow rate for the oil/water separators or cause violations of the effluent limitations specified in this permit.

3. All storm water accumulated in the secondary containment area(s) shall be discharged to the POL Facility oil/water separator as soon as practical after completion of the most recent storm event and after determining that the accumulated water is free of product or sheen. If a sheen is detected by visual observations, the area will be covered with oil absorbent blankets to collect petroleum product. After the sheen has been absorbed and the absorbent blankets have been removed, the draining process will begin. If the amount of petroleum product is such that professional clean-up action is required, then all the liquid from the containment area(s) shall be removed by a Rhode Island-licensed hazardous waste hauler and properly disposed of off-site. Any discharges of accumulated storm water shall not cause an exceedance of any permit limits.

4. The storm water collection and treatment system shall be operated and maintained in order to provide optimal treatment of the storm water prior to discharge to the receiving water.

5. The SWPPP in Part I.C. shall specifically address the adequacy of containment of leaks and spills in storage areas (from Drums, Additive Tanks, Petroleum Product Tanks, etc.), truck loading area(s), and fueling area(s). Adequate containment must exist at these locations so as to prevent untreated discharges from reaching any surface water.

6. A schedule for routinely monitoring and cleaning all oil/water separators for both sludge and oil layers shall be specified in the SWPPP. In addition, the SWPPP shall identify procedures for insuring compliance with the permit during any cleaning or maintenance periods.

7. The permittee shall assure the proper management of solid and hazardous waste in accordance with regulations promulgated under the Solid Waste Disposal Act, as amended by the Resource Conservation and Recovery Act (RCRA) of 1978 (40 U.S.C. 6901 et seq.), or amendments thereto.

C. STORM WATER POLLUTION PREVENTION PLAN REQUIREMENTS

1. A Storm Water Pollution Prevention Plan (SWPPP) shall be maintained and implemented by the permittee. The SWPPP shall be prepared in accordance with good engineering practices and identify potential sources of pollutants, which may reasonably be expected to affect the quality of storm water discharges associated with industrial activity from the facility. In addition, the SWPPP shall describe and ensure the implementation of Best Management Practices (BMPs) which are to be used to reduce or eliminate the pollutants in storm water discharges associated with industrial activity at the facility and to assure compliance with the terms and conditions of this permit.

2. RIANG submitted a plan to the DEM on September 1, 2016 for the implementation of appropriate storm water controls at the vehicle maintenance/refueling facility (Building 3).

RIANG must ensure that the installation of the source-specific storm water controls will be done in accordance with all Town of North Kingstown, State, and Quonset Development Corporation (QDC) requirements. The plan will be subject to DEM review, modification, and approval.

a. For the source-specific storm water controls at the vehicle maintenance/refueling facility, RIANG shall use the following minimum design elements (Note: If RIANG will infiltrate any of the storm water from the vehicle maintenance/refueling facility, they must follow all the below elements):

( 1) Any storm water from the fuel dispensing and tank filling areas shall be treated using either a multi-chamber oil/water separator or acceptable proprietary device (minimum oil storage capacity of 500 gallons) that is preceded by at least one catch basin;

(2) Provide a roof over the fuel dispensing area with roof drainage directed away from the dispensing area;

(3) Elevate the fuel dispensing and tank filling areas to prevent storm water from running in and through them;

( 4) Provide grooved concrete for the perimeter of the pad around the fuel dispensing area to be used to contain small spills.

b. One (1) year following the installation of the storm water controls as required in Part I.C.2, RIANG shall submit an amended SWPPP to the DEM that includes a description of the storm water controls at the vehicle maintenance/refueling facility and an updated site plan identifying the location of the storm water controls.

3. The SWPPP shall be signed by the permittee in accordance with §1.12 of the RIPDES regulations (See 250-RICR-150-10-1.12) and retained on-site. The SWPPP shall be made available upon request by the DEM.

4. If the SWPPP is reviewed by the DEM, the permittee may be notified at any time that the SWPPP does not meet one or more of the minimum requirements of this part. After such notification from the DEM, the permittee shall make changes to the SWPPP and shall submit a written certification that the requested changes have been made. Unless otherwise provided by the DEM, the permittee shall have thirty (30) days after such notification to make the necessary changes.

5. The permittee shall immediately amend the SWPPP whenever there is a change in design, construction, operation, or maintenance, which has a significant effect of the potential for the discharge of pollutants to the waters of the State; a release of reportable quantities of hazardous substances and oil; or if the SWPPP proves to be ineffective in achieving the general objectives of controlling pollutants in storm water discharges associated with industrial activity. Changes must be noted and then submitted to DEM within fourteen (14) days. Amendments to the SWPPP may be reviewed by DEM in the same manner as Part I.C.4. of this permit.

6. The SWPPP shall include, at a minimum, the following items:

a.

RI0021555_RIANG_Final 2021

Description of Potential Pollutant Sources. The SWPPP must provide a description of potential sources which may be reasonably expected to add significant amounts of pollutants to storm water discharges or which may result in the discharge of pollutants during dry weather from separate storm sewers draining the facility. It must identify all activities and significant materials, which may potentially be significant pollutant sources. Each plan shall include:

(1) A legible site map with a suitable scale such as 1"=40', 1"=50', or 1"=100' that supports easy identification of the following items (If the drainage area(s) is/are very large, the on-site map scale must be no smaller than 1"=100'). At a minimum the site map must include but not be limited to the following:

i. boundaries of the property and the size of the property in acres;

ii. directions of storm water flow (e.g., use arrows to show which ways storm water will flow);

iii. locations of all surface water bodies, including wetlands, in the immediate vicinity of the facility indicating if any of the waters are impaired and, if so, whether the waters have TMDLs established on them or other water quality determination;

iv. the location and extent of significant structures and delineation of impervious surfaces;

v. locations of all stormwater control measures;

vi. location of stormwater conveyances including ditches, pipes, and swales;

vii. locations of storm water inlets and outfalls, with a unique identification code for each outfall (e.g., Outfall 001, 002), identify if the outfall will be used as a stormwater monitoring point, and an approximate outline of the area draining to each outfall;

viii. if applicable, locations of all municipal separate storm sewers

Rl0021555_RIANG_Final 2021

Page 11 of24

(MS4s), where stormwater from the facility discharges to the

MS4;

ix. locations of potential pollutant sources and locations where significant materials are exposed to precipitation;

x. locations where major spills or leaks have occurred;

xi. location and description of non-storm water discharges;

xii. locations of the following activities where such activities are exposed to precipitation: fueling stations; vehicle and equipment maintenance and or cleaning areas; loading/unloading areas;

locations used for the treatment, storage, or disposal of wastes;

liquid storage tanks; processing and storage areas; access roads and rail lines used or traveled by carriers of raw materials, manufactured products, waste material, or by-products used or created by the facility; the location of transfer of substance in bulk; and machinery; and

xiii. location and source of runoff from adjacent property containing significant quantities of pollutants of concern to the facility.

(2) General Location Map. Provide a topographic map showing the general location of the facility with enough detail to identify the location of the facility and the receiving waters within one mile of the facility.

(3) An estimate of the overall runoff coefficient for the site, determined by an acceptable method, such as, but not limited to, area weighting.

( 4) Receiving Waters and Wetlands. The name of the nearest receiving water(s), including intermittent streams, the areal extent and description of wetland that may receive discharges from the facility, impairments and a list of pollutants causing impairments if applicable.

(5) Summary of Potential Pollutant Sources. The permittee must identify each separate area at the facility where industrial materials or activities are exposed to storm water and from which allowable non-stormwater discharges are released. Industrial materials or activities include, but are not limited to, material handling equipment or activities; industrial machinery; storage, cleaning, fueling and maintenance of vehicles and equipment storage; and raw materials, intermediate products, by-products, final products, or waste products. Material handling activities include the storage, loading and unloading, transportation, or conveyance of any raw material, intermediate product, final product or waste product. For each, separate area identified, the description must include:

i. A list of the activities (e.g., material storage, loading, access areas equipment fueling and cleaning, cutting steel beams);

ii. A list of the associated pollutant(s) or pollutant parameter(s) (e.g., crankcase oil, iron, biochemical oxygen demand, pH, etc.)

associated with each activity. The pollutant list must include all significant materials that have been handled, treated, stored or disposed in a manner to allow exposure to storm water between the time of five (5) years before this permit and the present;

iii. Method of on-site storage or disposal;

iv. For each area of the facility that generates storm water discharges associated with industrial activity with a reasonable potential for containing significant amounts of pollutants, a prediction of the direction of flow and an estimate of the types of pollutants, which are likely to be present in the storm water discharge;

v. The permittee must clearly identify areas where potential spills and leaks, which can contribute pollutants to storm water discharges, can occur, and their accompanying drainage points.

For areas that are exposed to precipitation or that otherwise drain to a storm water conveyance at the facility to be covered under this permit, the permittee must provide a list of significant spills and leaks of toxic or hazardous pollutants that occurred during the five (5) year period prior to this permit. The list must be updated if significant spills or leaks occur in exposed areas of the facility during the time the permittee are covered by the permit.

Significant spills and leaks include, but are not limited to, releases of oil or hazardous substances in excess of quantities that are reportable under CWA §311 (see 40 CFR 110.10 and 40 CFR 117.21) or section 102 of the Comprehensive Environmental Response, Compensation and Liability Act (CERCLA). Significant spills may also include releases of oil or hazardous substances that are not in excess of reporting requirements.

(6) Salt Storage. The permittee must document the location of any storage piles containing salt and used for deicing or other commercial or industrial purposes.

(7) A summary of existing sampling data describing pollutants in storm water discharges from the facility.

b. Storm Water Management Controls. The permittee must develop a description of storm water management controls appropriate for the facility and implement such controls. The appropriateness for implementing controls listed in the SWPPP must reflect identified potential sources of pollutants at the facility. The description of storm water management controls must address the following minimum components, including a schedule for implementing such controls:

RI0021555_RIANG_Final 2021

(1) Pollution Prevention Team. The SWPPP must identify a specific individual(s) within the facility organization as members of a team that are responsible for developing the SWPPP and assisting the facility manager in its implementation, maintenance, and revision. The SWPPP must clearly identify the responsibilities of each team member. The activities and responsibilities of the team must address all aspects of facility's

SWPPP.

(2) Risk Identification and Assessment/Material Inventory. The SWPPP must assess the potential of various sources which contribute pollutants to storm water discharge associated with the industrial activity. The SWPPP must include an inventory of the types of materials handled. Each of the following must be evaluated for the reasonable potential for contributing

Page 13 of24 pollutants to runoff: loading and unloading operations, outdoor manufacturing or processing activities, significant dust or particulate generating processes, and on-site waste disposal practices. Factors to consider include the toxicity of chemicals; quantity of chemicals used, produced, or discharged; the likelihood of contact with storm water, and the history of significant leaks or spills of toxic or hazardous pollutants.

Also, include in the inventory of exposed materials a description of the potential pollutant sources from the following activities: aircraft, runway, ground vehicle and equipment maintenance and cleaning; aircraft and runway deicing operations; and fire suppression foam testing operations.

If the permittee uses deicing chemicals, the permittee must maintain a record of the monthly quantities used.

(3) Preventative Maintenance. A preventative maintenance program must involve inspection and maintenance of storm water management devices (i.e., oil/water separators, catch basins) as well as inspecting and testing plant equipment and systems to uncover conditions that could cause breakdown or failures resulting in discharges of pollutants to surface waters.

(4) Minimizing Exposure. Where practicable, industrial materials and activities should be protected by a storm-resistant shelter to prevent exposure to rain, snow, snowmelt, or runoff.

(5) Good Housekeeping. Good housekeeping requires the maintenance of a clean, orderly facility. If applicable, the following areas must be specifically addressed:

i.

ii.

iii.

Aircraft, Vehicle, and Equipment Storage Areas: The storage of aircraft, vehicles and equipment with actual or potential fluid leaks must be confined to designated areas (delineated on the site map). The SWPPP must describe measures that prevent or minimize contamination of the storm water runoff from these areas. The facility shall consider the use of drip pans under aircraft/vehicles/equipment, indoor storage of the aircraft/vehicles/equipment, installation of berming and diking of this area, use of absorbents, roofing or covering storage areas, cleaning pavement surface to remove oil and grease, or other equivalent methods.

Fueling Areas: The SWPPP must describe measures that prevent or minimize contamination of the storm water runoff from fueling areas. The facility shall consider berming the fueling area(s), using spill and overfow protection and cleanup equipment, minimizing run-on/runoff of storm water to the fueling area( s) by way of storm water drains, using dry cleanup methods, collecting the storm water runoff and providing treatment or recycling, or other equivalent measures.

Material Storage Areas: Storage units of all materials (e.g., used oil, used oil filters, spent solvents, paint wastes, radiator fluids, transmission fluids, hydraulic fluids) must be maintained in good condition, so as to prevent contamination of storm water, and plainly labeled (e.g., "used oil", "spent solvents", etc.). The SWPPP must describe measures that prevent or minimize iv.

Permit No. RI0021555 contamination of the storm water runoff from such storage areas.

The facility shall consider indoor storage of the materials, storing waste materials in a centralized location, installation of berming and diking of the area, minimizing run-on/runoff of storm water to the areas, using dry cleanup methods, collecting the storm water runoff and providing treatment, or other equivalent methods.

Aircraft, Vehicle, and Equipment Cleaning Areas: The SWPPP must describe measures that prevent the discharge of aircraft/vehicle/equipment wash waters, including tank-cleaning operations, and engine compressor washes of C-130J aircraft.

The facility shall consider performing all cleaning operations indoors, covering the cleaning operation, ensuring that all washwaters drain to the intended collection system, collecting the storm water runoff from the cleaning area and providing treatment or recycling, or other equivalent measures. These discharges are not authorized by this permit, except for the clear water rinses of C-130J aircraft as described in Part I.A. 14.

v. Aircraft, Vehicle. and Equipment Maintenance Areas: The SWPPP must describe measures that prevent or minimize contamination of the storm water runoff from all areas used for aircraft/vehicle/equipment maintenance (including the maintenance conducted on the aircraft in dedicated hangars).

The facility shall consider performing all maintenance activities indoors, using drip pans, maintaining an organized inventory of materials used in the shop, draining all parts of fluids prior to disposal, prohibiting wet cleanup practices where the practices would result in the discharge of pollutants to storm water drainage systems, using dry cleanup methods, collecting the storm water runoff from the maintenance area and providing treatment or recycling, minimizing run-on/runoff of storm water areas or other equivalent measures.

vi. Source Reduction: Consider alternatives to the use of glycol based deicing chemicals to reduce the aggregate amount of deicing chemicals used and/or lessen the environmental impact.

a) Runway Deicing Operation: Evaluate at a minimum whether over-application of deicing chemicals occurs by analyzing application rates and adjusting as necessary, consistent with considerations of flight safety. Also consider these BMP options (or their equivalents):

metered application of chemicals; pre-wetting dry chemical constituents prior to application; installing a runway ice detection system; implementing anti-icing operations as a preventive measure against ice build-up.

b) Aircraft Deicing Operations: Determine whether excessive application of deicing chemicals occurs and adjust as necessary, consistent with considerations of flight safety. This evaluation must be carried out by the personnel most familiar with the particular aircraft and flight operations in question (versus an outside entity such as the airport authority). Consider using alternative deicing/anti-icing agents as well as containment measures for all applied chemicals. Also, consider these BMP options (or their equivalents) for reducing deicing fluid use: forced-air deicing systems, computer-controlled fixed-gantry systems, infrared technology, hot water, varying glycol content to air temperature, enclosed-basket deicing trucks, mechanical methods, solar radiation, hangar storage, aircraft covers, etc. Also consider using ice-detention systems and airport traffic flow strategies and departure slot allocation systems (if applicable).

vii. Management of Runoff: Where deicing operations occur, describe and implement a program to control or manage contaminated runoff to reduce the amount of pollutants being discharged from the site. The program must include a discussion of the aircraft parking apron deicing pad and glycol recovery system, which includes a dedicated deicing area, diversion manhole, two-way valve structure, and 25,000-gallon collection tank. Also, consider recovering deicing materials when these materials are applied during non-precipitation events (e.g., covering storm sewer inlets, using booms, installing absorptive interceptors in the drains, etc.)

to prevent these materials from later becoming a source of storm water contamination. Used deicing fluid should be recycled whenever possible.

(6) Spill Prevention and Response Procedure. Areas where potential spills can occur, and their accompanying drainage points, must be identified clearly in the SWPPP. The potential for spills to enter the storm water drainage system must be eliminated wherever feasible. Where appropriate, specific material handling procedures, storage requirements, and procedures for cleaning up spills must be identified in the SWPPP and made available to the appropriate personnel. The necessary equipment to implement a clean-up must also be made available to personnel. The permittee shall immediately notify the office of releases in excess of reportable quantities.

(7) Storm Water Management. The SWPPP must contain a narrative consideration of the appropriateness of traditional storm water management practices. Based on an assessment of the potential of various sources at the plant to contribute pollutants to storm water discharges associated with industrial activity (see Part I.C.6.b.2 of this permit), the SWPPP must provide that measures, determined to be reasonable and appropriate, must be implemented and maintained.

(8) Sediment and Erosion Prevention. The SWPPP must identify areas which; due to topography, activities, or other factors; have a high potential for significant soil erosion and identify measures to limit erosion.

(9) Employee Training. Employee training programs must inform personnel responsible for implementing activities identified in the SWPPP, or otherwise responsible for storm water management at all levels, of the components and goals of the SWPPP. Training should address topics such as spill response, good housekeeping, and material management practices. The SWPPP must identify periodic dates for such training.

(10) Disposal Procedures. The disposal procedures for tank bottom waters, tank bottom sludge, oil/water separator sediments, oil/water separator oils, oil absorbent cleaning material(s) and any washdown waters containing detergents, dispersants, emulsifiers, etc. must be documented in the SWPPP.

(11) Routine Facility Inspections. Qualified plant personnel must be identified to inspect the following areas of the facility: areas where industrial materials or activities are exposed to stormwater; areas identified in the SWPPP and those that are potential pollutant sources; areas where spills or leaks have occurred in the past three (3) years; and stormwater control measures used to comply with the effluent limits contained in this permit.

Material handling areas must be inspected for evidence of, or the potential for, pollutants entering the drainage system. A tracking or follow up procedure must be used to ensure that the appropriate action has been taken in response to the inspection. Records of inspections must be maintained on site for at least five (5) years. Routine facility inspections must be conducted quarterly and with at least one member of the facility's stormwater pollution prevention team participating. At a minimum, the permittee must conduct monthly inspections during all months in which deicing chemicals may be used in the areas where deicing/anti-icing occurs and has the potential to enter the storm water collection system.

Also, if significantly or deleteriously large quantities of deicing chemicals are being spilled or discharged, or if water quality impacts have been reported, increase the frequency of the inspections to weekly until such time as the chemical spills/discharges or impacts are reduced to acceptable levels. The DEM may specifically require the permittee to increase inspections and SWPPP reevaluations as necessary.

(12) Recordkeeping and Internal Reporting Procedures. Incidents such as spills, or other discharges, along with other information describing the quality and quantity of storm water discharges must be included in the records. All inspections and maintenance activities must be documented and maintained on site for at least five (5) years.

c. Deicing Fluid Collection and Management. A description of equipment and operation and management procedures related to deicing fluid usage and collection. The permittee shall implement a glycol recovery program that includes the following minimum components:

RI0021555_RIANG_Final 2021

(1) Collection Program Operating Procedures. Standard operating procedures and overall glycol recovery goals for the collection program, including at a minimum, the following:

i. Overall collection efficiency goals for glycol collection program;

ii. Dry weather (if applicable) and wet weather operating procedures;

iii. Management and description of glycol storage tanks, aircraft deicing pad, and glycol recovery tank;

iv. Recordkeeping forms and procedures;

v. Training program for glycol collection personnel.

(2) Annual Deicing Fluid Collection and Management Report. An annual report must be prepared which provides a summary and description of glycol usage, collection and management activities during the previous deicing season. Such report shall be submitted to the DEM with the Annual Site Inspection Reports required under Part I.C.6.g. no later than July 15th of each year and must include, at a minimum, the following:

i. Tabular summary of aircraft deicing fluid usage and collection volumes (total glycol used and collected per day that deicing occurs, and total glycol used and collected annually);

ii. Summary of overall seasonal weather conditions;

iii. A summary of each event specific report that includes a discussion of types and timing of storms and resulting effect(s) on collection activities for each individual storm event;

iv. A summary of all odor complaints received and any investigations and related amendments to the SWPPP and associated BMPs;

vi. Recommendations for usage and collection procedures, and equipment to improve collection efficiencies and overall program management, enhanced BMPs and recommendations to amend the SWPPP. The recommendations must include a schedule to amend the SWPPP and implement enhanced BMPs subject to the Director's approval.

d. Fertilizer and Pesticide Management. The permittee shall develop and implement BMPs for fertilizer and pesticide management with the goal of reducing or eliminating the concentrations and loads of fertilizers and pesticides in storm water discharges to the receiving waters. Mosquito control products shall be employed in accordance with State requirements by qualified personnel.

e. Post-Construction Storm Water Management in New Development and Redevelopment. The permittee shall develop and implement a program to address storm water runoff from new development and redevelopment projects. The plan must address direct discharges of storm water to waters of the State in addition to the discharges to the storm drainage system. The program must ensure that controls are in place to prevent or minimize water quality impacts. The post construction program must include:

RI0021555_RIANG_Final 2021

(1) Development and implementation of strategies which include a combination of structural methods such as detention basins, wet basins, infiltration basins and trenches, dry wells, galleys, vegetated swales and vegetated filter strips and/or non-structural BMPs.

(2) Procedures for site plan review to ensure that design of controls to address post-construction runoff are consistent with: The State of Rhode Island Storm Water Design and Installation Manual (as amended).

(3) Procedures to ensure adequate and long-term operation and maintenance of BMPs.

(4) Procedures to develop and implement strategies to reduce runoff volume which may include minimizing impervious areas such as roads, parking, paving or other surfaces, encouraging infiltration of non-contaminated runoff, preventing channelization, encouraging sheet flow, and where appropriate, preserving, enhancing or establishing buffers along surface water bodies and f.

g.

RI0021555_RIANG_Final 2021 tributaries.

Non-Storm Water Discharges.

Permit No. RI0021555

(1) Certification of Non-Storm Water Discharges. The SWPPP must include a certification that all discharges (i.e., outfalls) have been tested or evaluated for the presence of non-storm water. The certification must be signed in accordance with §1.12 of the RIPDES regulations (See 250- RICR-150-10-1.12) and include the following:

i. The date of any testing and/or evaluation;

ii. Identification of potential significant sources of non-storm water at the site;

iii. A description of the results of any test and/or evaluation for the presence of non-storm water discharges;

iv. A description of the evaluation criteria or testing method used;

v. A list of the outfalls or onsite drainage points that were directly observed during the test; and

vi. The action(s) taken, such as a list of control measures used to eliminate unauthorized discharge(s). For example, a floor drain was sealed, a sink drain was re-routed to the sanitary sewer.

A copy of the notification must be included in the SWPPP at the facility.

Non-storm water discharges to waters of the State that are not authorized by a RIPDES permit are unlawful and must be terminated.

(2) Allowable Non-Storm Water Discharges. Certain sources of non-storm water are allowable under Part I.A.14 of this permit. In order for these discharges to be allowed, the SWPPP must include the following:

i. identification of each allowable non-storm water source;

ii. the location where it is likely to be discharged; and

iii. descriptions of appropriate BMPs for each source.

Except for flows from firefighting activities, the permittee must identify in the SWPPP all sources of allowable non-storm water that are discharged under the authority of this permit. If the permittee includes mist blown from cooling towers amongst the allowable non-storm water discharges, the permittee must specifically evaluate the potential for the discharges to be contaminated by chemicals used in the cooling tower and determine that the levels of such chemicals in the discharges would not cause or contribute to a violation of an applicable water quality standard after implementation of the BMPs the permittee has selected to control such discharges.

Annual Site Inspection Report. An annual site inspection must be conducted by appropriate personnel named in the SWPPP to verify that the description of potential…