01-MXRD 17-0051_B1994_DBRFP Part 7.pdf

Template Version June 2020

U.S. AIR FORCE

STORM WATER MANAGEMENT PLAN

HANSCOM AFB

EPA NPDES Permit Number: MAR042029

11/24/2021

STORM WATER MANAGEMENT PLAN 24 November 2021

ABOUT THIS PLAN

This installation-specific Environmental Management Plan (EMP) is based on the U.S. Air Force’s (AF) standardized Storm Water Management Plan (SWMP) template. This plan is not an exhaustive inventory of all storm water requirements and practices. Where applicable, external resources, including Air Force Instructions (AFIs); AF Playbooks; federal, state, local, and Final Governing Standards (FGS); and permit requirements are referenced.

Each section of this plan begins with standardized, AF-wide “common text” language that addresses AF and Department of Defense (DoD) policy and federal requirements. This common text language is restricted from editing to ensure that it remains standard throughout all plans. The common text language is maintained and updated by the designated Office of Primary Responsibility (OPR) with assistance from the Office of Collateral Responsibility (OCR), as appropriate. Immediately following the AF-wide common text sections are Installation sections. The Installation sections contain installation-specific content to address state, local, and installation-specific requirements. Installation sections are unrestricted and are maintained and updated by AF environmental Sections and/or installation personnel.

This document is optimized to be accessed and viewed electronically. The eDASH website at https://cs2.eis.af.mil/sites/10040 is the primary communication tool for AF EMPs.

This AF standardized template may differ in format and organization from other templates developed by regulatory agencies or other organizations. If applicable, a cross-reference table of sections is included below to simplify review.

The Hanscom Air Force Base (HAFB) SWMP incorporates requirements for the General Permit for Stormwater Discharges from Small Municipal Separate Storm Sewer Systems in Massachusetts (2016 MA Small MS4 General Permit) which became effective on July 1, 2018.

Cross-Reference: AF SWMP Template and MassDEP Template

MassDEP Template Section Title

MassDEP Template Section

Number

AF Template Section Title

AF Template Section Number

Certification Page 1 Certification Page 4 Background Page 2 Overview and Scope Section 1.0

Small MS4 Authorization Page 3 Installation – Specific Content Section 11.0

Stormwater Management Program Team Page 4 General Roles and

Responsibilities Section 4.0

Receiving Waters Page 5 Installation – Specific Content Section 11.0

Eligibility: Endangered Species and Historic Properties

Page 6 Installation – Specific Content Section 11.0

MCM 1 through MCM 6 Page 7-29 Minimum Control Measures and Best Management Practices

Section 7.0

Annual Evaluation Page 30 Recordkeeping and Reporting Section 6.0

MassDEP Template Section Title

MassDEP Template Section

Number

AF Template Section Title

AF Template Section Number

TMDLs and Water Quality Limited Waters Page 32-47 Installation – Specific

Content Section 11.0

TABLE OF CONTENTS

CERTIFICATION

DOCUMENT CONTROL

Standardized SWMP Template Installation SWMP

1.0 OVERVIEW AND SCOPE

2.0 INSTALLATION PROFILE

3.0 ENVIRONMENTAL MANAGEMENT SYSTEM

4.0 GENERAL ROLES AND RESPONSIBILITIES

5.0 TRAINING

6.0 RECORDKEEPING AND REPORTING

7.0 MINIMUM CONTROL MEASURES AND BEST MANAGEMENT PRACTICES

7.1 Public Education and Outreach

7.2 Public Involvement / Participation

7.3 Illicit Discharge Detection and Elimination

7.4 Construction Site Runoff Control

7.5 Post-Construction Runoff Control

7.6 Pollution Prevention / Good Housekeeping

8.0 REFERENCES

9.0 ACRONYMS

10.0 DEFINITIONS

11.0 INSTALLATION – SPECIFIC CONTENT

APPENDICES

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 gathered and evaluated 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 submitted 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.

Responsible Official Certification

Printed Name: THOMAS J. SCHLUCKEBIER Date: 24 November 2021

Signature: Title: Base Civil Engineer

DOCUMENT CONTROL

Standardized SWMP Template

In accordance with (IAW) the Air Force Civil Engineer Center (AFCEC) Environmental Directorate (CZ) Business Rule (BR) 08, EMP Review, Update, and Maintenance, the standard content in this SWMP template is reviewed periodically, updated as appropriate, and approved by the Water Quality Subject Matter Expert (SME).

This version of the template is current as of 06/26/2020 and supersedes the 2018 version.

NOTE: Installations are not required to update their SWMPs every time this template is updated. When it is time for installations to update their SWMPs, they should refer to the eDASH EMP Repository to ensure they have the most current version.

Installation SWMP

Record of Updates

The SWMP is updated as changes to requirements and management practices occur, including those driven by changes in applicable regulations and permits.

Record of Updates

Change No. Nature of Change Date of Change Approved By:

NEW

SWMP updated to reflect year one requirements for 2016 MA Small MS4

General Permit and format modified to

USAF template

July 2020 Base Civil Engineer

(66 ABG/CE)

Moderate – Removed duplicate BMPs from Section 7.1., updated

IDDE to show implementation, converted to 2020 template

24 November 2021 Base Civil Engineer

(66 ABG/CE)

Record of Review

The SWMP must be reviewed and revised on an annual basis, or as required by the permit. The plan is approved by the Environmental, Safety, and Occupational Health Council (ESOHC) and other organizations, as required. Formatting and administrative changes do not require additional review and approval.

Record of Review

Review Date Review Participants Notes/Remarks Results in Plan Update (Yes or No)

20200513 66 ABG/CE New plan YES - New 20210610 66 ABG/CE Change 1 YES

1.0 OVERVIEW AND SCOPE

AF installations that operate a Municipal Separate Storm Sewer System (MS4) in an Urbanized Area (UA) are regulated as small MS4s pursuant to the Storm Water Phase II Final Rule of the National Pollutant Discharge Elimination System (NPDES) permitting program of the Clean Water Act. Covered installations must obtain coverage under a small MS4 storm water permit from the appropriately authorized permitting authority and implement a storm water management program.

The primary objective of this SWMP is to reduce the discharge of pollutants to storm water to the maximum extent possible (MEP). Pollutant discharge reduction will be accomplished by implementing best management practices (BMPs) and measurable goals for the following six minimum control measures (MCMs):

Public Education and Outreach Public Involvement / Participation Illicit Discharge Detection and Elimination Construction Site Runoff Control Post-Construction Runoff Control Pollution Prevention / Good Housekeeping

Installation Supplement – Overview and Scope

1.1. On May 1, 2003, the EPA Region 1 issued its Final General Permit for Stormwater Discharges from Small Municipal Separate Storm Sewer Systems (2003 Small MS4 permit), consistent with the Phase II rule. The 2003 Small MS4 permit covered "traditional" (e.g., cities and towns) and "non-traditional" (e.g., Federal and state agencies) MS4 Operators located in the states of Massachusetts and New Hampshire. This permit expired on May 1, 2008 but remained in effect until operators were authorized under the 2016 MA Small MS4 General Permit, which became effective on July 1, 2018.

1.2. HAFB is located about 20 miles northwest of Boston, Massachusetts, within the historical towns of Bedford, Lexington, Lincoln, and Concord. The total military and civilian workforce, including contractors, at HAFB is approximately 11,000 people. The largest tenant unit on the installation is the Air Force Life Cycle Management Center (AFLCMC). In addition to this primary function, Hanscom supports the Air Force Nuclear Weapons Center (AFNWC), MIT Lincoln Laboratoy (MIT/LL), the MITRE Corporation, the Massachusetts National Guard Joint Force Headquarters (MANG JFHQ), the Joint Personal Property Shipping Office (JPPSO), the Defense Contract Management Agency (DCMA), and various other companies and groups related to the Department of Defense (DOD). The host unit at Hanscom is the 66th Air Base Group (66 ABG) which provides logistics, Civil Engineer, Fire and Emergency Services, Security Forces, and other installation support functions. The base also provides all functions and services to support the families that occupy the privatized Family Housing area within the installation perimeter fence. The housing area residences, streets, parking areas, infrastructure, and utilities are not owned by HAFB and therefore are excluded from the MS4 stormwater permit area.

1.3. The HAFB stormwater system is interconnected on the Massachusetts Port (MASSPORT) Authority-owned, adjacent airfield, with stormwater discharges from the MASSPORT Hanscom Field stormwater systems. The HAFB stormwater system discharges into the Shawsheen River in Bedford (designated Class B surface water used for drinking water), and into the Kiln Brook in Lexington which flows into the Shawsheen River. HAFB is a military base and discharges into the waters of the U.S., which is part of the eligibility criteria for the Small MS4 Permit under the Phase II Storm Water Regulations.

1.4. In the Massachusetts Year 2014 Integrated List of Waters, the Massachusetts Department of Environmental Protection (MassDEP) lists the Shawsheen River Headwaters (Segment ID MA83-08) as impaired due to pathogens and habitat alterations. Additionally, HAFB is located within the municipality of Bedford, which is listed in Part 2.2.2.b of the 2016 MA Small MS4 General Permit as containing waterbodies, or their tributaries, that are impaired due to phosphorus. Therefore, this SWMP adheres to the requirements of 2016 MA Small MS4 General Permit Appendix F Part A.III and Appendix H II and

III.

1.5. The current SWMP, including all MS4 mapping, will be available for public review and input upon request via the HAFB Stormwater Program website (https://community.max.gov/x/nAOIXg.) A copy of HAFB’s Notice of Intent (NOI) and a copy of the 2016 MA Small MS4 General Permit are kept in the

66 ABG, CE Installation Management Flight, Environmental Element (66 ABG/CEIE) official files.

2.0 INSTALLATION PROFILE

Installation Profile

Scope of Plan HAFB and tenants including the MIT area, but excluding housing area

OPR 66 ABG/CEIE has overall responsibility for implementing the storm water management program and is the lead organization for monitoring compliance with applicable federal, state, and local storm water regulations.

Responsible Official Scott Sheehan Water Quality Program Manager Renata Welch Permitting Authority USEPA and MassDEP MS4 Permit Number MAR04202 MS4 Permit Expiration Date 6/30/2022 Applicable Federal and AF regulatory references

List references.

Clean Water Act AFI 32-1067, Water and Fuel Systems AFI 32-7001, Environmental Management

Applicable State and local regulatory references

2016 MA Small MS4 General Permit

3.0 ENVIRONMENTAL MANAGEMENT SYSTEM

The AF environmental program adheres to the Environmental Management System (EMS) framework and its Plan, Do, Check, Act cycle for ensuring mission success. Executive Order (EO) 13693, Planning for Federal Sustainability in the Next Decade, U.S. Department of Defense Instruction (DoDI) 4715.17, Environmental Management Systems, AFI 32-7001, and International Organization for Standardization (ISO) standard 14001, Environmental Management Systems – Requirements with guidance for use, provide guidance on how environmental programs should be established, implemented, and maintained to operate under the EMS framework.

The storm water management program employs EMS-based processes to achieve compliance with all legal obligations and current policy drivers, effectively manage associated risks, and instill a culture of continual improvement. The SWMP serves as an administrative operational control that defines compliance-related activities and processes.

4.0 GENERAL ROLES AND RESPONSIBILITIES

Storm water management requires the full involvement of all organizations and personnel on the installation, including contractors, tenants, and family members living on the installation. The major roles/organizations involved in supporting the storm water management program at a typical installation include:

Installation Commander Base Civil Engineer Flight Chief, Installation Management Water Quality Program Manager Storm Water Pollution Prevention Team Unit Environmental Coordinator (UEC) Installation Personnel

AFCEC

Additional organizational and personnel roles and responsibilities for storm water management are described throughout this plan and in referenced documents. Detailed information about typical responsibilities is available in AFI 32-1067, AFI 32-7001, and the Water Quality Playbook. Additional installation-specific roles and responsibilities are documented in the BMPs below.

Installation Supplement – General Roles and Responsibilities

The HAFB Stormwater Coordinator is Scott Sheehan, 66 ABG/CEIE. Mr. Sheehan is the primary person responsible for directing and coordinating the HAFB Small MS4 Program. The Stormwater Coordinator ensures appropriate implementation and documentation of all BMPs, measurable goals, and evaluation metrics for Minimum Control Measures. The Stormwater Coordinator will not perform every activity or task required under the program individually. Rather, the Stormwater Coordinator directs and designates other personnel within the HAFB Environmental Element, and within other base offices and organizations to perform or conduct various activities.

5.0 TRAINING

AF installations implement storm water training programs to ensure that installation personnel, contractors, and visitors are aware of their role in the program and the importance of their participation to its success.

DoDI 4715.10, Environmental Education, Training, and Career Development, implements policy and provides the procedures for environmental education, training, and career development programs for DoD personnel. AF installations ensure that appropriate personnel complete required education, training, and certification necessary to perform their jobs. Priority is given to the use of AF-approved education/training sources such as the Air Force Institute of Technology (AFIT) training courses and official AF-approved computer-based training resources (e.g., The Environmental Awareness Course Hub [TEACH], Advanced Distributed Learning Service [ADLS], ArcNet, etc.) to meet training needs.

Specific training requirements are outlined in the BMPs below. Training records are maintained in IAW the Recordkeeping and Reporting section of this plan.

Installation Supplement – Training

All HAFB MS4 personnel authorized to review plans, conduct site inspections, or manage construction projects are encouraged to complete the Air Force Institute of Technology (AFIT) Construction Site Stormwater Seminar online training program. Personnel involved in the Illicit Discharge Detection and

Elimination (IDDE) Program will receive IDDE Training annually, at a minimum. Additionally, all new 66 ABG/CEIE employees will receive Stormwater Awareness Training within 90 days of hire. This training is given by the 66 ABG/CEIE Stormwater Coordinator.

6.0 RECORDKEEPING AND REPORTING

All AF MS4s have measures in place to ensure compliance with applicable permit recordkeeping and reporting requirements. Records are stored and maintained IAW Air Force Manual 33-363, Management of Records, and records are archived and disposed IAW the Air Force Records Information Management System (AFRIMS) Records Disposition Schedule (RDS).

Installation Supplement – Recordkeeping and Reporting

6.1. Records of information required by the 2016 MA Small MS4 General Permit must be kept for five years. These records include monitoring results, reports, records of screening, follow-up and elimination of illicit discharges, maintenance records, inspection records, and data used to develop the NOI, SWMP, SWPPPs, and annual reports. These records must be submitted upon request by the permitting authority, and must be available to the public. Public access to the record will be managed through the HAFB Stormwater Program website, releasable only when a written request to the Stormwater Coordinator is received due to national security sensitivity (https://community.max.gov/x/nAOIXg).

6.2. The HAFB Environmental Element will submit an annual report to regulatory agencies through the EPA’s online Central Data Exchange (CDX) (https://cdx.epa.gov/cdx/). This report is due no later than 30 Sep of each year. The annual report will contain information regarding the activities of the previous calendar year, follow the template provided within CDX, and will generally contain the following (subject to change based on CDX standardized reporting requirements):

6.2.1. A self-assessment review of the compliance with the permit conditions.

6.2.2. An assessment of the appropriateness of the selected BMPs.

6.2.3. The status of any plans or activities required by Permit Part 2.1 (Water Quality- Based Effluent Limitations) and/or Permit Part 2.2 (Discharges to Certain Impaired Waters), including:

6.2.3.1. Identification of all discharges determined to be causing or contributing to an exceedance of water quality standards, and a description of response including items required in Permit Part 2.2.1.

6.2.3.2. For discharges subject to TMDL requirements, identification of specific BMPs used to address pollutants causing the impairment, an assessment of the BMPs’ effectiveness at controlling the pollutant, and any deliverables required by MA MS4 General Permit Appendix F (enhanced BMPs identified in Section 3).

6.2.3.3. For discharges to water quality-limited waters, a description of each BMP required by MA MS4 General Permit Appendix H, and any deliverables required by Appendix H (enhanced BMPs identified in Section 3).

6.2.4. An assessment of progress towards achieving measurable goals including:

6.2.4.1. An evaluation of the public education program.

6.2.4.2. A description of activities used to promote public participation.

6.2.4.3. A description of activities related to implementation of the IDDE program, and the effectiveness of the IDDE program.

6.2.4.4. An evaluation of construction runoff management.

6.2.4.5. An evaluation of stormwater management for new development and re-development.

6.2.4.6. The status of O&M programs and SWPPPs, including inspection results .

6.2.4.7. Reporting for surface water drinking supplies.

6.2.5. A summary of collected and analyzed data.

6.2.6. A discussion of activities for the next reporting cycle.

6.2.7. A discussion of any changes in BMPs or measurable goals.

6.2.8. Information regarding any reliance on another entity for achieving any measurable goal, or for implementing any control measure.

6.2.9. Outfall monitoring results from the current reporting period as well as the entire permit period.

6.2.10. Results from any other stormwater or receiving water quality monitoring or studies from the reporting period.

6.2.11. Annual Reports will be filed in the CEIE official files.

7.0 MINIMUM CONTROL MEASURES AND BEST MANAGEMENT PRACTICES

AF MS4 storm water management programs are comprised of at least six MCMs that collectively are designed to reduce pollutants discharged to receiving bodies to the MEP. BMPs and measurable goals are implemented and monitored for each MCM as described below. Where required, all AF MS4s have developed regulatory mechanisms to enforce requirements in the general permit. These mechanisms are included in the appropriate sections below.

7.1 Public Education and Outreach

All AF MS4s implement public education and outreach programs to educate the installation population on the impact that their common, daily activities and behaviors can have on installation storm water runoff and local water resources. These programs include general storm water pollution awareness and guidance on actions that can be taken to reduce the potential storm water pollution from their activities.

Example Public Education and Outreach BMPs include:

Develop a communication and outreach strategy, including your goals, target audience, distribution methods, and available resources

Develop outreach materials, including pamphlets, displays, signs, etc.

Develop a public awareness campaign for installation personnel on pet waste management Develop a public awareness campaign for installation personnel on trash management

Installation-specific BMPs are described in the installation supplement below.

Installation Supplement – Public Education and Outreach

Documentation related to Public Education and Outreach is maintained in the 66 ABG/CEIE official files.

Public Education and Outreach

BMP Title Facility Manager’s Briefing Presentation

Description HAFB will brief stormwater quality issues and guidance at the Facility Manager’s Briefing.

Target Audience Businesses, Institutions, Commercial Facilities Measurable Goals Perform one briefing presentation every other year.

Target Date Every other year Responsible Individual(s) Environmental Element (66 ABG/CEIE) Status Pending Implementation

BMP Title Construction Project Kick-Off Meetings Description HAFB will brief storm water quality issues, permit requirements, and inspection reporting at the kick-off meeting for each construction project on base that has the potential to affect storm water.

Target Audience Developers (construction) and Contractors

Measurable Goals Perform a kick-off meeting for every construction project with the potential to affect stormwater.

Target Date As needed

Status Occurring for all projects with the potential to affect stormwater.

BMP Title Annual Industrial Operational Unit Briefings

Description

HAFB will brief equipment inspection and maintenance, proper storage of industrial materials, proper management and disposal of wastes, proper management of dumpsters, minimization of use of salt or other de-icing materials, proper disposal of yard waste, proper storage of salt and other de-icing materials, and proper maintenance of parking lot surfaces (sweeping) to the identified audiences.

Target Audience Industrial facilities (CE Roads and Grounds, CE Operations supervisors, Auto Hobby shop, Logistic Readiness Squadron, Lawn Maintenance)

Measurable Goals Host one briefing every year Target Date Annually

Status Ongoing

BMP Title Pet Waste Flyer

Description HAFB will provide a brochure to all dormitory and housing area residents regarding handling of pet waste, and provide a copy to temporary lodging facilities to place inside check-in information.

Target Audience Residents and transient lodging guests Measurable Goals Distribute an updated flyer at least once every other year.

Target Date Every other year

BMP Title Contractors Environmental Guide

HAFB will provide the Contractor Environmental Guide which covers the significant environmental aspects and impacts that contractors often influence at HAFB. The guide outlines the environmental requirements that relate to performing work on the installation, and includes the EMS requirements. The guide must be signed by contractors before work may proceed.

Target Audience Developers (construction) and contractors

Measurable Goals The guide must be signed by all contractors before work may proceed.

Target Date As needed Responsible Individual(s) Engineering Flight (66 ABG/CEN) Status Completed for all contract work occurring on the installation

BMP Title Installation Facility Manager’s Guide

All Facility Managers receive the Installation Facility Manager’s Guide which covers all aspects of facility management and includes environmental management requirements.

Target Audience Businesses, Institutions, Commercial Facilities

Measurable Goals Distribute the 66th Civil Engineering Division Facility Manager's Guide to all Facility Managers

Target Date As needed Responsible Individual(s) CE Customer Service (66 ABG/CEOER)

Status Complete. New Facility Managers receive the Installation Facility Manager’s Guide upon appointment, and all Facility Managers receive the current guide whenever it is updated

BMP Title Educational Displays, Posters, and/or Kiosks

Description Annual Middle School Earth River Clean-up OR Educational Program

Target Audience Students/Residents

Measurable Goals HAFB will organize and host an annual earth day program or river clean-up day.

Target Date Annually

BMP Title 24/7 Storm Water Hotline

Description HAFB will continue to operate a stormwater hotline as part of its 24/7 customer service phone line.

Target Audience All Audiences Measurable Goals Maintain 24/7 customer services phone line.

Target Date Ongoing Responsible Individual(s) CE Customer Service (66 ABG/CEOER)

The following BMPs satisfy the educational requirements outlined in Appendix F, Part A.III, educational requirements, for reduction of bacteria and pathogens: Pet Waste Flyer.

The following BMPs satisfy the Appendix H, Part II and Part III educational requirements for reduction of total phosphorus and bacteria and pathogens, respectively: Industrial Operational Unit Briefings, Installation Facility Manger’s Guide, and Pet Waste Flyer.

7.2 Public Involvement / Participation

All AF MS4s comply with applicable public notice requirements associated with their storm water management program. In addition to the public notice, AF MS4 storm water management programs encourage the involvement of the installation population in all facets of the program, from developing BMPs to performing installation cleanup activities.

Example Public Involvement / Participation BMPs include:

Stream cleanup and monitoring events Wetland planting events Installation storm drain marking

Installation-specific BMPs are described in the installation supplement below.

Installation Supplement – Public Involvement / Participation

Public Involvement / Participation

In addition to the public education and outreach BMPs noted in Section 7.1. in this plan, access to MS4 related documents, including the SWMP and MCM plans, is provided through a SharePoint site. Public notification and instructions to access the SharePoint site are detailed on the HAFB Stormwater Program website (https://community.max.gov/x/nAOIXg). HAFB's SWMP contains sensitive information regarding the infrastructure of the military installation; therefore, access to the SharePoint site must be requested and approved by the Stormwater Coordinator upon public request.

7.3 Illicit Discharge Detection and Elimination

All AF MS4s have measures in place to detect and eliminate illicit discharges to the storm water system.

Illicit discharges include intentional non-storm water discharges and incidental non-storm water discharges.

Installation illicit discharge detection and elimination measures include both proactive and reactive measures for preventing or limiting these types of discharges.

Example Illicit Discharge Detection and Elimination BMPs include:

Develop a storm sewer system map Establish an ordinance, regulatory mechanism, or other binding agreement, as appropriate, prohibiting non-storm water discharges Develop a plan to detect and prevent illicit discharges Educate installation personnel on the hazards associated with illicit discharges

Installation-specific BMPs are described in the installation supplement below.

Installation Supplement – Illicit Discharge and Elimination

7.3.1. IDDE procedures will be updated annually to reflect the milestones listed in Section 2.3.4.6 of the 2016 MA Small MS4 General Permit, the annual outfall inventory update, and any illicit discharge occurrences. IDDE training will be provided annually at a minimum to employees involved in the IDDE Program. When IDDE tasks are outsourced to a contractor, HAFB reserves the right to include training requirements within the contracting statement of work.

7.3.2. HAFB tracks IDDE Program progress by reporting the following in each annual report:

7.3.2.1. The number of SSOs and illicit discharges identified and removed.

7.3.2.2. The number and percent of total outfall catchments served by the MS4 evaluated using the catchment investigation procedure.

7.3.2.3. All wet and dry weather screening and sampling results, and the volume of sewage removed.

7.3.3. The following IDDE BMP’s listed in HAFB’s NOI have been completed:

7.3.3.1. Develop SSO Inventory

7.3.3.2. Develop written IDDE Program

7.3.3.3. Develop storm sewer system map (Phase I)

7.3.3.4. Implement IDDE Program. The IDDE program was implemented in 2020. This includes conducting dry weather screening. Wet weather screening was not initially necessary due to the results of the dry weather screening but future wet weather screening may be desired if conditions change. No illicit discharges were identified and therefore the requirements of the permit are complete.

7.3.4. Active BMPs are described below:

BMP Title Storm sewer system map (Phase II)

Description Create Phase II map and update during IDDE program completion.

Measurable Goals Update map annually and complete full system map 10 years after effective date of permit.

Target Date 2028

Responsible Individual(s) Engineering Flight, GEOBASE

(66 ABG/CENME)

BMP Title Implement IDDE program

Description Implement catchment investigations according to IDDE Program and permit conditions.

Measurable Goals Complete 10 years after effective date of permit.

Target Date 2028 Responsible Individual(s) External CEIE Contractor Status Complete BMP Title Employee training Description Train employees on IDDE implementation Measurable Goals Train annually Target Date 2019 start, annually

BMP Title Conduct dry weather screening

Conduct in accordance with the outfall screening procedure in IDDE Program and permit conditions.

Measurable Goals Complete 3 years after effective date of permit Target Date 2021 Responsible Individual(s) External CEIE Contractor

BMP Title Conduct wet weather screening

Description Conduct in accordance with the outfall screening procedure in IDDE Program.

Measurable Goals Complete 10 years after effective date of permit

Target Date 2028

Status Complete

BMP Title Ongoing screening

Description Conduct dry and wet weather screenings (as necessary).

Measurable Goals Complete ongoing outfall screening in accordance with procedures in IDDE program

Target Date 2028

7.4 Construction Site Runoff Control

All AF MS4s have measures in place to reduce discharges to storm water of sediment and other potential pollutants from construction sites disturbing one or more acres of land.

Example Construction Site Runoff Control BMPs include:

Establish an ordinance, regulatory mechanism, or other binding agreement, as appropriate, requiring erosion and sediment control

Implement erosion and sediment control measures Establish procedures for controlling construction waste Develop a procedure to review construction site plans for proper sediment control Develop a procedure for collecting and considering installation personnel information and feedback Conduct inspections and enforce storm water requirements at construction sites

Installation-specific BMPs are described in the installation supplement below.

Installation Supplement – Construction Site Runoff Control

7.4.1. Documentation related to the Construction Site Storm Water Runoff Control Program is maintained in the 66 ABG/CEIE official files. The Construction Site Storm Water Runoff Control program includes requirements for all land disturbing activities greater than 5,000 square feet, and reduced requirements for small projects with a footprint less than 5,000 square feet. Construction operators are required to develop a sediment and erosion control plan, or adhere to the sediment and erosion control plan prepared by HAFB Engineering Flight that is included in the project statement of work. All construction generated waste must be disposed of in accordance with local regulations and Section 2.3 of the NPDES Construction General Permit (CGP). Discharge of waste to the MS4 is forbidden.

7.4.2. The following construction site runoff control BMP’s listed in HAFB’s NOI have been completed:

7.4.2.1. Develop site inspection and enforcement of Erosion and Sediment Control measures

7.4.2.2. Develop Site Plan review procedures.

7.4.2.3. Develop and distribute Erosion and Sediment Control Plan requirements for construction operators.

7.4.2.4. Waste Control requirement in accordance with NPDES CGP Section 2.3 and local regulations have been adopted.

7.4.3. Active BMPs are described below:

BMP Title Site Plan Review Implementation

Description

A site plan will be developed by HAFB or the contracting party for all applicable projects.

The CE Engineering Flight will review all site plans to ensure they meet the minimum requirements in the Construction Site Runoff Control Program.

Measurable Goals HAFB will review all site plans.

Target Date Ongoing

Status Implemented

BMP Title Site Inspection of Erosion and Sediment Control Measures Implementation

Description

Site Operators will inspect erosion and sediment control measures at the intervals outlined in the Construction Site Runoff Control Plan. The CE Engineering Flight will review site operator inspection reports and perform an inspection at least monthly.

Inspections will be performed using the procedures included within the Construction Site Runoff Control plan or a comparable procedure.

Measurable Goals Inspections are performed at intervals outlined in the plan.

Target Date Ongoing

Responsible Individual(s) Engineering Flight (66 ABG/CEN) and Contractors

Status Implemented

7.5 Post-Construction Runoff Control

All AF MS4s have measures in place to reduce discharges to storm water of sediment and other potential pollutants from new and/or redevelopment projects.

Example Post-Construction Runoff Control BMPs include:

Develop strategies for implementing both structural and non-structural BMPs in development projects

Establish an ordinance, regulatory mechanism, or other binding agreement, as appropriate, addressing post-construction runoff

Implement a program to ensure adequate long-term operation and maintenance of BMPs

Installation-specific BMPs are described in the installation supplement below.

Installation Supplement – Post-Construction Runoff Control

The 2016 MA Small MS4 2016 General Permit requires the Stormwater Management in New Development and Redevelopment (Post Construction Stormwater Management) Plan be developed in accordance with Section 2.3.6(a)(ii) within two years of the effective permit date, or by July 1, 2020. The Stormwater Management in New Development and Redevelopment Plan will be developed to satisfy the permit requirements. The BMPs listed below will be incorporated in the program. This section will be updated upon completion of the program.

BMP Title As-built plans for on-site stormwater control

The procedures to require submission of as-built drawings and ensure long term operation and maintenance will be a part of the SWMP.

Measurable Goals Require submission of as-built plans for completed projects.

Target Date Ongoing

BMP Title Target properties to reduce impervious areas

Identify at least 5 permittee-owned properties that could be modified or retrofitted with BMPs to reduce impervious areas and update annually.

Measurable Goals Complete 4 years after effective date of permit, and report annually on retrofitted properties.

Target Date 2022

Status NA

BMP Title Allow green infrastructure

Develop a report assessing existing local regulations to determine the feasibility of making green infrastructure practices allowable when appropriate site conditions exist.

Measurable Goals Complete 4 years after effective date of permit and implement recommendations of report.

Target Date 2022

BMP Title Street design and parking lot guidelines

Develop a report assessing requirements that affect the creation of impervious cover. The assessment will help determine if changes to design standards for streets and parking lots can be modified to support low impact design options.

Measurable Goals Complete 4 years after effective date of permit and implement recommendations of report.

Target Date 2022

BMP Title

Ensure any stormwater controls and/or management practices for new development and redevelopment meet the retention or treatment requirements of the permit and all applicable requirements of the Massachusetts Stormwater Handbook.

Description

Adoption, amendment, or modification of a regulatory mechanism to meet permit requirements. Development of Post Construction Plan.

Measurable Goals Complete 2 years after effective date of permit Target Date 2020

Responsible Individual(s) External CEIE Contractor

Status Draft Program will be developed by 30 June

7.6 Pollution Prevention / Good Housekeeping

All AF MS4s have measures in place to identify and implement methods and practices for performing municipal operations in a manner that minimizes and prevents pollution of storm water runoff. Municipal operations may include:

Storm drain maintenance and cleaning Landscaping Road repair and infrastructure maintenance Winter road maintenance

Example Pollution Prevention / Good Housekeeping BMPs include:

Cover deicing materials when not in use Ensure proper procedures are followed when deicing roadways Ensure vehicle maintenance is performed in approved locations Perform regular street cleaning Inspect storm sewer system and conduct maintenance as necessary

Installation-specific BMPs are described in the installation supplement below.

Installation Supplement – Pollution Prevention / Good Housekeeping

The 2016 MA Small MS4 2016 General Permit Section 2.3.7 requires written Operations and Maintenance Procedures, and a written SWPPP for select facilities within 2 years of the permit effective date, or by July 1, 2020. These documents are currently being developed and will be maintained in the 66 ABG/CEIE official files. The BMPs listed below will be incorporated in the program. This section will be updated upon completion of the documents.

BMP Title O&M procedures

Create written O&M procedures including all requirements contained in 2.3.7.a.ii for parks and open spaces, buildings and facilities, and vehicles and equipment.

Measurable Goals Complete 2 years after the effective date of permit

Target Date 2020

BMP Title Inventory all permittee-owned parks and open spaces, buildings and facilities, and vehicles and equipment.

Description Create inventory

Measurable Goals Complete 2 years after the effective date of permit.

Target Date 2020

BMP Title Infrastructure O&M

Description Establish and implement a program for repair and rehabilitation of MS4 infrastructure.

Measurable Goals Complete 2 years after the effective date of permit.

Target Date 2020

BMP Title Stormwater Pollution Prevention Plans

(SWPPP)

Description Create SWPPPs for maintenance garages, transfer stations, and other waste-handling facilities.

Measurable Goals Complete 2 years after the effective date of permit.

Target Date 2020

BMP Title Catch basin cleaning

Establish a schedule for catch basin cleaning that ensures that each catch basin is no more than 50% full. Clean catch basins IAW the established schedule.

Measurable Goals

Clean catch basins IAW the established schedule, report the number of catch basins cleaned, and the volume of material removed annually.

Target Date 2020 Responsible Individual(s) CE Operations Flight (66 ABG/CEO)

BMP Title Street Sweeping Program

Description

Establish a schedule for catch basin cleaning that ensures that each catch basin is no more than 50% full. Clean catch basins IAW the established schedule.

Measurable Goals Sweep all streets and permitee-owned parking lots at least once per year in the spring.

Target Date 2020

BMP Title Road-Salt Use Optimization Program

Description Establish and implement a program to minimize the use of road salt.

Measurable Goals Implement salt use optimization during deicing season.

Target Date 2020

8.0 REFERENCES

Standard References

(Applicable to all AF Installations)

Federal Water Pollution Control Act (Clean Water Act) AFI 32-1067, Water and Fuel Systems AFI 32-7001, Environmental Management AFI 90-201, Air force Inspections System ETL 14-1, Construction and Operation and Maintenance Guidance for Storm Water Systems Water Quality Program Management Playbook eDASH AFLOA Water Quality Legal and Other Requirements eDASH Water Quality Program Page eDASH Training Matrix

ADLS

Installation References

None

9.0 ACRONYMS

Standard Acronyms

(Applicable to all AF Installations) eDASH Acronym Library Water Quality Playbook Acronym Section U.S. EPA Terms and Acronyms

Installation Acronyms

CGP Construction General Permit IDDE Illicit Discharge Detection and Elimination HAFB Hanscom Air Force Base MassDEP Massachusetts Department of Environmental Protection MASSPORT Massachusetts Port Authority

10.0 DEFINITIONS

Standard Definitions

(Applicable to all AF Installations)

Water Quality Playbook Definition Section

Installation Definitions

Incorporate installation-specific content.

11.0 INSTALLATION – SPECIFIC CONTENT

Section 1.10.2 of the 2016 MA Small MS4 General Permit provides the information required to be included in the SWMP document. Most of these requirements have been addressed in this plan; however, this section provides the remainder of the required information not previously addressed or included.

11.1. New or Increased Discharges. HAFB requires reduction in stormwater discharges for any new building projects; therefore, increased stormwater discharges are not anticipated. If an increased stormwater discharge or pollutant loading is identified, it will be subject to MA anti-degradation regulations at 314 CMR 4.04. The provisions of 314 CMR 4.04 include information submittal requirements, and procedures to obtain authorization for increased discharges where appropriate. Any increased discharge authorized by MassDEP will be incorporated into this SWMP.

11.2. Discharges to Surface Drinking Water Supplies. HAFB discharges to the headwaters of the Shawsheen River. In accordance with 314 CMR 4.00, the Shawsheen River is designated as Class B as previously discussed in this plan. Minimizing the impact of discharges to public surface water drinking supply sources are a priority for HAFB. The following paragraphs present the Class B designation description, the measures that will be taken to minimize impacts, public supply notification procedures for emergencies, and pre-treatment and spill control measures that will be implemented by HAFB.

11.2.1. Class B waters are designated as a habitat for fish, other aquatic life, and wildlife, including their reproduction, migration, growth, and other critical functions. Class B waters are also designated waters for primary and secondary contact recreation. The Shawsheen River is designated as Class B from mile points 18.0 to 25.0, which includes treated water supply and warm water. HAFB discharges to segment MA83-08, which is mile points 25.0 to 27.0. Class B waters must be suitable as a source of public water supply with appropriate treatment; must be suitable for irrigation and other agricultural uses;

and for compatible industrial cooling and process uses.

11.2.2. Under 314 CMR 4.00, any authorized discharge to surface water must be provided with a level of treatment equal to, or exceeding the requirements of the Massachusetts Surface Water Discharge Permit Program (314 CMR 3.00). Operating under a MS4 and implementing a Stormwater Management

Program meets the 314 CMR 3.00 requirements; therefore, continuing to implement the 2016 MA Small MS4 General Permit requirements helps avoid and/or minimize HAFB MS4’s impact to surface water drinking supplies. Specifically, continued implementation and update of the following SWMP elements will avoid and minimize impacts to the surface water supply source:

11.2.2.1. IDDE Program

11.2.2.2. Construction Site Runoff Control Program

11.2.2.3. Developing a Post-Construction Stormwater Runoff Program

11.2.2.4. Developing O&M Programs

11.2.2.5. Developing SWPPPs

11.3. Special Eligibility Determinations: Endangered Species

11.3.1. Section 1.9 of the 2016 MA Small MS4 General Permit requires documentation of special eligibility determinations in the SWMP within one year of the permit effective date, updated annually thereafter. HAFB is eligible for permit coverage under “Criterion C” procedures relating to endangered species protection. Criterion C applies when federally-listed threatened or endangered species, or their designated critical habitat(s) are likely to occur in or near the facility’s “action area,” and the industrial activity’s discharges and discharge-related activities are not likely to adversely affect those listed threatened or endangered species, or critical habitat(s). The Endangered Species Determination process, following the 2016 MA Small MS4 General Permit Appendix C, Part B, was completed and is maintained in the 66 ABG/CEIE official files.

11.3.2. HAFB certified its eligibility under this criterion in August 2018. HAFB initiated consultation with the US Fish and Wildlife Service (FWS) on August 1, 2018. It was determined that the Northern Long-Eared Bat (NLEB) was the only protected species potentially present in the area of potential effect. This determination was made through professional experience and by preparing a current iPAC report. In the summer of 2017, HAFB conducted a bat survey which concluded that the NLEB is in fact, not present on HAFB. As a result, HAFB made a “no species present” and therefore “no affect” determination on August 8, 2018, which the USFWS concurred with. A copy of the package with supporting documentation is kept in the 66 ABG/CEIE official files.

11.4. Special Eligibility Determinations: Historic Properties. An Architectural Building and Inventory Survey – Hanscom AFB report dated March 2001 indicates that 37 facilities on HAFB are eligible for the National Register of Historic Places. Additionally, HAFB property includes eleven sites of potential archaeological sensitivity. As an existing facility covered under the previous MA Small MS4 permit, the EPA addressed National Historic Preservation Act issues for HAFB upon submittal of its original NOI.

HAFB certified eligibility for this permit using Criterion A in the NOI, meaning that “the discharges do not have the potential to cause effects on historic properties.” Therefore, HAFB was not required to contact the State Historic Preservation Office. Based on this criteria, the EPA documented that the project has “no potential to cause effects” (36 CFR 800.3(a)(1)). Future consultations under Section 106 regulations may be necessary in the event that HAFB proposes construction or installation of new stormwater control infrastructure. The NOI contains information related to historic properties.

11.5. Activities to Achieve Compliance. The 2016 MA Small MS4 General Permit provides timetables for additional SWMP requirements. The following is a list of additional SWMP requirements that must be updated at certain timeframes from the permit effective date of July 1, 2018.

11.5.1. The following items have been completed as required by 2021:

11.5.1.1. All outfalls or interconnections (excluding problem and excluded outfalls) were inspected for the presence of dry weather flow (Permit Part 2.3.4.7.b).

11.5.1.2. Follow-up outfall ranking for dry weather screening (as available), but no later than within 3 years of the effective permit date (Permit Part 2.3.4.7.c.iii) was completed.

11.5.2. The following items must be included in the SWMP update for 2022:

11.5.2.1. Reports assessing current street design and parking lot guidelines that affect the creation of impervious cover (Permit Part 1.10.2 and 2.3.6.b).

11.5.2.2. A report assessing the existing local regulation to determine the feasibility of making practices (e.g., green roofs, infiltration, water harvesting) allowable when appropriate conditions exist (Permit Part 2.3.6.c).

11.5.2.3. Identify at least five permittee-owned properties that could potentially be modified or retrofitted with BMPs designed to reduce frequency, volume, and pollutant loads (Permit Part 2.3.6.d).

11.5.2.4. Phosphorus Source Identification Report (Permit Appendix H.II.b).

11.5.3. The following items must be included in the SWMP update for 2023:

11.5.3.1. An evaluation of all permittee-owned properties identified as presenting retrofit opportunities, or areas for structural BMP installation or identified in the Phosphorus Source Identification Report (Permit Appendix H.II.c).

11.5.3.2. A listing of planned structural BMPs with plans and schedules for implementation (Permit Appendix H.II.c). One BMP must be installed within 6 years of the permit’s effective date.

11.5.4. The following items must be included in the Annual Report Starting in 2023:

11.5.4.1. Identify additional permittee-owned sites and infrastructure that could be retrofitted to maintain a minimum of five sites in their inventory (continue annually) (Permit Part 2.3.6.d).

11.5.4.2. A report on all properties that were modified or retrofitted with BMPs to mitigate impervious areas (Permit Part 2.3.6.d).

11.5.5. The following items must be included in the Annual Report starting in 2024: Install at least one structural BMP, track phosphorus removal, and report in the annual report (Permit Appendix H.II.c).

11.5.6. The following items must be included in the SWMP update for 2025:

11.5.6.1. A complete investigation of catchments associated with problem outfalls (Permit Part 2.3.4.8.a).

11.5.6.2. Catchment investigation where any information gathered identifies sewer input (Permit Part 2.3.4.8.a).

11.5.7. The following items must be included in the SWMP update for 2028:

11.5.7.1.