EPA Example Construction SWPPP: Small Commercial Site (< 5 acres)

EPA 833-B-07-005 September 2007

EPA Example Construction SWPPP:

Small Commercial Site (< 5 acres)

Introduction

This example Stormwater Pollution Prevention Plan (SWPPP) was prepared using the U.S.

Environmental Protection Agency’s (EPA’s) guide, Developing Your Stormwater Pollution

Prevention Plan: A Guide for Construction Operators and its accompanying SWPPP template.

Both the SWPPP Guide and the SWPPP template are available at

http://www.epa.gov/npdes/swpppguide. The instructions and references in this SWPPP refer to

the SWPPP template and are left in for illustrative purposes. The SWPPP guide, SWPPP

template, and this hypothetical SWPPP example are provided for compliance assistance purposes

only; for a complete list of permit requirements, refer to EPA’s Construction General Permit at:

http://www.epa.gov/npdes/stormwater/cgp.

Use of this example SWPPP

This example SWPPP represents a hypothetical project for the construction of a postal and

distribution center on less than 5 acres in New Hampshire. For this example, the SWPPP was

prepared in March 2006 with construction beginning in April 2006. To illustrate how an actual

SWPPP should be used, this example SWPPP includes marked-up edits to pages and copies of

records such as inspection reports. For purposes of this example, this SWPPP was copied on July

20, 2006. Therefore, inspection reports and other records are current as of that date.

This example SWPPP was developed for EPA’s 2003 Construction General Permit (CGP), as

modified effective January 21, 2005. If you are subject to a different general permit issued by a

state or EPA Region, your requirements and SWPPP template might be slightly different.

Disclaimer

This SWPPP is for a hypothetical project. Any similarities to actual construction projects,

operators, or places are purely coincidental.

Do not copy this SWPPP for your project! The best management practices and explanatory text

in this SWPPP are intended to apply only to this hypothetical site. Each SWPPP must be created

on a case-by-case basis to address the unique conditions and issues at a given construction site.

Relying on the wording in this hypothetical SWPPP is discouraged and will not necessarily result

in compliance with the Construction General Permit.

Stormwater Pollution Prevention Plan (SWPPP)

Stormville Postal and Distribution Center

Stormwater Pollution Prevention Plan

for:

Stormville Postal and Distribution Center

3100 Sixth Avenue

Stormville, NH 03061

(603) 444-3333

Operator(s):

United States Postal Service (USPS) Advanced Construction Contractors (ACC)

Russ Braybrooks Joe Butler

1125 Capital Street, NE 5800 Washington Avenue

Boston, MA 02101 Nashua, NH 03064

Office Phone: (617) 333-1122 Office Phone: (603) 444-3210

Office Fax: (617) 333-1121 Office Fax: (603) 444-3211

SWPPP Contact(s):

Martina Davis

Advanced Construction Contractors

5800 Washington Avenue

Nashua, NH 03064

Office Phone: (603) 444-3210

Office Fax: (603) 444-3211

SWPPP Preparation Date:

03/01/2006

Estimated Project Dates:

Start of Construction: 04/05/2006

Completion of Construction: 04/05/2007

Stormwater Pollution Prevention Plan (SWPPP)

Stormville Postal and Distribution Center

Contents

SECTION 1: SITE EVALUATION, ASSESSMENT, AND PLANNING ....................................................... 1

1.1 Project/Site Information .................................................................................................................... 1

1.2 Contact Information/Responsible Parties ......................................................................................... 2

1.3 Nature and Sequence of Construction Activity ................................................................................. 5

1.4 Soils, Slopes, Vegetation, and Current Drainage Patterns............................................................... 6

1.5 Construction Site Estimates ............................................................................................................. 7

1.6 Receiving Waters ............................................................................................................................. 8

1.7 Site Features and Sensitive Areas to be Protected.......................................................................... 9

1.8 Potential Sources of Pollution........................................................................................................... 9

1.9 Endangered Species Certification .................................................................................................. 11

1.10 Historic Preservation ...................................................................................................................... 12

1.11 Applicable Federal, Tribal, State or Local Programs ...................................................................... 13

1.12 Maps .............................................................................................................................................. 14

SECTION 2: EROSION AND SEDIMENT CONTROL BMPS.................................................................. 15

2.1 Minimize Disturbed Area and Protect Natural Features and Soil.................................................... 16

2.2 Phase Construction Activity............................................................................................................ 16

2.3 Control Stormwater Flowing onto and through the Project ............................................................. 17

2.4 Stabilize Soils................................................................................................................................. 18

2.5 Protect Slopes................................................................................................................................ 20

2.6 Protect Storm Drain Inlets .............................................................................................................. 21

2.7 Establish Perimeter Controls and Sediment Barriers ..................................................................... 22

2.8 Retain Sediment On-Site................................................................................................................ 24

2.9 Establish Stabilized Construction Exits .......................................................................................... 25

2.10 Additional BMPs............................................................................................................................. 27

SECTION 3: GOOD HOUSEKEEPING BMPS ...................................................................................... 28

3.1 Material Handling and Waste Management.................................................................................... 28

3.2 Establish Proper Building Material Staging Areas .......................................................................... 30

3.3 Designate Washout Areas.............................................................................................................. 31

3.4 Establish Proper Equipment/Vehicle Fueling and Maintenance Practices...................................... 33

3.5 Control Equipment/Vehicle Washing .............................................................................................. 33

3.6 Spill Prevention and Control........................................................................................................... 34

3.7 Any Additional BMPs...................................................................................................................... 35

3.8 Allowable Non-Stormwater Discharge Management ...................................................................... 35

SECTION 4: SELECTING POST-CONSTRUCTION BMPs .................................................................... 37

SECTION 5: INSPECTIONS ................................................................................................................ 40

5.1 Inspections ..................................................................................................................................... 40

5.2 Delegation of Authority ................................................................................................................... 42

5.3 Corrective Action Log ..................................................................................................................... 42

SECTION 6: RECORDKEEPING AND TRAINING ................................................................................ 43

6.1 Recordkeeping ............................................................................................................................... 43

6.2 Log of Changes to the SWPPP ...................................................................................................... 43

6.3 Training .......................................................................................................................................... 44

SECTION 7: FINAL STABILIZATION................................................................................................... 45

ACC ii

Stormwater Pollution Prevention Plan (SWPPP)

Stormville Postal and Distribution Center

SECTION 8: CERTIFICATION AND NOTIFICATION............................................................................. 47

SWPPP APPENDICES ....................................................................................................................... 48

Appendix A – General Location Map

Appendix B – Site Maps

Appendix C – Construction General Permit

Appendix D – NOI and Permit Authorization Letter from EPA/State, Alteration of Terrain Application, and

Storm Water Permit Basics: New Hampshire Digging Needs a Federal Permit Fact Sheet

Appendix E – Inspection Reports

Appendix F – Corrective Action Log

Appendix G – SWPPP Amendment Log

Appendix H – Subcontractor Certifications/Agreements

Appendix I – Grading and Stabilization Activities Log

Appendix J – Training Log

Appendix K – Delegation of Authority

Appendix L – Additional Information

Tables

Table 1. Timeline of Activity...........................................................................................................................5

Table 2. Potential construction site pollutants.............................................................................................. 10

Figures

Figure 1. Vegetated swale ........................................................................................................................... 18

Figure 2. Erosion control blanket ................................................................................................................. 21

Figure 3. Silt fence....................................................................................................................................... 23

Figure 4. Pipe Outlet Sediment Trap ........................................................................................................... 25

Figure 5. Stabilized Construction Exit.......................................................................................................... 26

Figure 5. Above Grade Concrete Washout..................................................................................................32

ACC ii

Stormwater Pollution Prevention Plan (SWPPP)

Stormville Postal and Distribution Center

1.2 Contact Information/Responsible Parties

Instructions:

― List the operator(s), project managers, stormwater contact(s), and person or organization that prepared the

SWPPP. Indicate respective responsibilities, where appropriate.

― Also, list subcontractors expected to work on-site. Notify subcontractors of stormwater requirements

applicable to their work.

― See SWPPP Guide, Chapter 2.B and EPA’s Construction General Permit (CGP) Part 3, Subparts 3.2,

3.3.A, and 3.4.A.

Operator(s):

OPERATOR

Contact Information Geographic Area of Control*

United States Postal Service (USPS)

Russ Braybrooks

1125 Capital Street, NE

Boston, MA 02101

Office Phone: (617) 333-1122

Office Fax: (617) 333-1121

The United States Postal Service (USPS) is the

principal land owner and contract manger for the

project. USPS has contracted Advanced

Construction Contractors (ACC) to develop and

implement the SWPPP and build the Stormville

Postal and Distribution Center. USPS will be

responsible for general oversight of the project and

will retain operational control over construction

plans and specifications, including review of the

SWPPP and any amendments, inspection reports,

corrective actions and changes to stormwater

conveyance or control designs. USPS will

participate, when possible, on self-inspections

conducted by ACC.

* See Construction Operator’s Cooperative Agreement

OPERATOR

Contact Information Geographic Area of Control*

Advanced Construction Contractors (ACC)

Joe Butler

5800 Washington Avenue

Nashua, NH 03064

Office Phone: (603) 444-3210

Office Fax: (603) 444-3211

ACC has entered into a contract with USPS to

develop and implement the SWPPP and perform

all construction activities at the site. ACC will

implement and maintain the best management

practices (BMPs) specified in Sections 2 and 3,

conduct inspections (Section 5) and address

stormwater over the entire site including all areas

disturbed by construction activities, areas used for

materials storage, discharge points, and

construction exits.

* See Construction Operator’s Cooperative Agreement

ACC

Stormwater Pollution Prevention Plan (SWPPP)

Stormville Postal and Distribution Center

Project Manager(s) or Site Supervisor(s):

Advanced Construction Contractors

Bill Rustler, Project Manager

5800 Washington Avenue

Nashua, NH 03064

Office Phone: (603) 444-3210

Office Fax: (603) 444-3211

Site Phone: (603) 444-3333

Mr. Rustler is responsible for managing day-to-day site operations at the site.

SWPPP Contact(s):

Advanced Construction Contractors

Martina Davis, Stormwater Compliance Officer

5800 Washington Avenue

Nashua, NH 03064

Office Phone: (603) 444-3210

Office Fax: (603) 444-3211

Site Phone: (603) 444-3333

Martina Davis is the primary SWPPP contact and is responsible for site compliance with the

SWPPP and EPA’s Construction General Permit.

This SWPPP was Prepared by:

Mattock Compliance

Roy Mattock

2588 Paver Avenue, Suite 310

Boston, MA 02101

Office Phone: (617) 222-2221

Office Fax: (617) 222-2222

Mr. Mattock was contracted by ACC to develop this SWPPP.

Emergency 24-Hour Contact:

Advanced Construction Contractors

Martina Davis, Stormwater Compliance Officer

Site Phone: (603) 444-3333

Cellular Phone: (603) 235-2222

ACC

Stormwater Pollution Prevention Plan (SWPPP)

Stormville Postal and Distribution Center

SUBCONTRACTOR(S)

Contact Information Area of Control*

Jim Young, Owner

JY Street Sweeping, Inc.

345 Liberty Avenue

Nashua, NH 03064

(603) 444-0987

JY Street Sweeping has entered into a contract with

USPS and ACC to perform street sweeping for Johnson

Street and Sixth Avenue.

Bill Ways, Vice President Ways Waste and Sanitary Services have entered into a

Ways Waste and Sanitary Services contract with USPS and ACC to deliver dumpsters and

56 Washington Road temporary sanitary facilities to the site. They will also be

Nashua, NH 03064 responsible for dumpster and recycling waste pick up and

(603) 444-0044 disposal of sanitary wastes from the temporary sanitary

facilities.

George Smith, Owner Smith Plumbing Company has entered into a contract

Smith Plumbing Company with USPS and ACC to install plumbing fixtures for the

234 Dunn Way postal and distribution center.

Nashua, NH 03064

(603) 444-3333

Bart Thomas, Owner

Thomas Electric

6502 Capital Avenue

Nashua, NH 03064

(603) 444-0000

Thomas Electric has entered into a contract with USPS

and ACC to install electrical components for the postal

and distribution center.

Jean Askew, Owner Askew Foundations has entered into a contract with

Askew Foundations, LLC USPS and ACC to construct the foundation for the postal

78 Toms Road and distribution center.

Nashua, NH 03064

(603) 444-7777

* See Appendix H – Subcontractor Certifications/Agreements

ACC

Stormwater Pollution Prevention Plan (SWPPP)

Stormville Postal and Distribution Center

1.3 Nature and Sequence of Construction Activity

Instructions:

― Briefly describe the nature of the construction activity and approximate time frames (one or more

paragraphs, depending on the nature and complexity of the project).

― For more information, see SWPPP Guide, Chapter 3.A. and EPA’s CGP Part 3, Subparts 3.3.B.1 and 2,

and 3.4.A.

Describe the general scope of the work for the project, major phases of construction, etc:

ACC is contracted by the USPS to build an 18,000-square-foot postal and distribution center at

3100 Sixth Avenue, Stormville, Hillsborough County, New Hampshire. ACC is responsible for

overall site development and building construction. Soil disturbing activities will include

clearing and grubbing; installing stabilized construction exits; installing erosion and sediment

controls; grading; installation of the building foundation; excavation for utilities and parking lots;

and installation of post-construction controls.

What is the function of the construction activity?

Residential Commercial Industrial Road Construction Linear Utility

Other (please specify):

Estimated Project Start Date: 04/05/2006

Estimated Project Completion Date: 04/05/2007

Table 1. Timeline of Activity: ACC will follow the sequence of activities below for major construction

activities and BMP installation.

Estimated timeline

of activity

Construction activity and BMP descriptions

04/05/06 –

Before any site grading activities begin

05/01/06 1. Install perimeter silt fences (See Section 2, Part 2.7)

2. Install storm drain inlet protection on Johnson Street and Sixth Avenue (Section 2, Part 2.6)

3. Construct stabilized construction exits (Section 2, Part 2.9)

4. Construct vegetated swale along the north perimeter (Section 2, Part 2.3)

5. Construct sediment trap (Section 2, Part 2.8)

05/01/06 –

Site grading

05/16/06 1. Begin site clearing and grubbing operations

2. Begin overall site grading and topsoil stripping

3. Establish topsoil stockpile (Section 2, Part 2.1)

4. Install silt fences around stockpile and cover stockpiles (Section 2, Part 2.1)

5. Disturbed areas where construction will cease for more than 14 days will be stabilized with

erosion controls (Section 2, Part 2.4)

05/16/06 –

Infrastructure (utilities, parking lot, etc.)

07/02/06 1. Construct staging and materials storage area (Section 3, Part 3.2)

2. Install temporary sanitary facilities and dumpsters (Section 3, Part 3.1)

3. Install utilities, sanitary sewers, and water services

ACC

Stormwater Pollution Prevention Plan (SWPPP)

Stormville Postal and Distribution Center

07/

02/06 –

Building Construction

02/20/07 1. Construct temporary concrete washout area (Section 3, Part 3.3)

2. Begin construction of building foundation and structure

3. Install gutters, curbs, and prepare pavement subgrade

4. Parking lot paved, exterior building constructed (by Sept. 30

)

5. Remove temporary concrete washout area (Section 3, Part 3.3)

6. Implement winter stabilization procedures (Section 2, Part 2.4)

02/20/07 –

Final stabilization and landscaping

04/05/2007 1. Finalize pavement activities

2. Convert sediment trap to a permanent bioretention area

3. Install infiltration trench, porous pavers and tree box filters

4. Remove all temporary control BMPs and stabilize any areas disturbed by there removal with

erosion controls

5. Prepare final seeding and landscaping

6. Monitor stabilized areas until final stabilization is reached

1.4 Soils, Slopes, Vegetation, and Current Drainage Patterns

Instructions:

― Describe the existing soil conditions at the construction site including soil types, slopes and slope lengths,

drainage patterns, and other topographic features that might affect erosion and sediment control.

― Also, note any historic site contamination evident from existing site features and known past usage of the

site.

― This information should also be included on your site maps (See SWPPP Guide, Chapter 3.C.).

― For more information, see SWPPP Guide, Chapter 3.A and EPA’s CGP Part 3, Subpart 3.3.C.

Soil type(s):

According to a review of the USDA Natural Resource Conservation Service soils map for

Hillsborough County, New Hampshire, on-site soils consist of Ridgebury, Canton, Udorthents,

and Chatfield. These soils are classified as hydrologic groups A, B, and C soils, respectively.

The site consists primarily of hydrologic soil group A; therefore, the site has well-drained soils.

Slopes (describe current slopes and note any changes due to grading or fill activities):

The site is a relatively flat site (less than 2 percent slopes) and does not contain any major

slopes.

Drainage Patterns (describe current drainage patterns and note any changes due to grading or fill

activities):

• Preconstruction stormwater runoff flows northwest over the undeveloped site to

Stormville’s municipal separate storm sewer system (MS4) on Johnson Street. (See

Appendix B – Pre-Construction Site Map)

ACC

Stormwater Pollution Prevention Plan (SWPPP)

Stormville Postal and Distribution Center

• Following overlot grading, stormwater runoff will flow to the northwest corner of the site

to a temporary sediment trap. Excess stormwater runoff will be diverted to the town’s MS4

on Johnson Street through a raised outlet structure in the temporary sediment trap. Runoff

from the adjacent property to the north will be captured by the vegetated swale and diverted

to the town’s MS4. (See Appendix B – Site Map)

Vegetation:

The site supports unvegetated soil areas and blocks of shrubs, grass and other undergrowth.

1.5 Construction Site Estimates

Instructions:

― Estimate the area to be disturbed by excavation, grading, or other construction activities, including

dedicated off-site borrow and fill areas.

― Calculate the percentage of impervious surface area before and after construction

― Calculate the runoff coefficients before and after construction.

― For more information, see SWPPP Guide, Chapter 3.A and EPA’s CGP Part 3, Subpart 3.3.B.

The following are estimates of the construction site:

Total project area:

4.36 acres

Construction site area to be disturbed : 4.36 acres

Percentage impervious area before construction: 5 %

Runoff coefficient before construction: .0715

Percentage impervious area after construction: 21 %

Runoff coefficient after construction: .3145

Because this site disturbs less than 5 acres, ACC also calculated the rainfall erosivity factor for

the site and period of construction activity. An R factor of 103 was calculated using EPA’s

Rainfall Erosivity Factor Calculator; therefore, this project is not eligible for the rainfall

erosivity waiver because the R factor was greater than 5.

ACC

Stormwater Pollution Prevention Plan (SWPPP)

Stormville Postal and Distribution Center

1.6 Receiving Waters

Instructions:

― List the waterbody(s) that would receive stormwater from your site, including streams, rivers, lakes, coastal

waters, and wetlands. Describe each as clearly as possible, such as Mill Creek, a tributary to the Potomac

River, and so on.

― Indicate the location of all waters, including wetlands, on the site map. For more information, see EPA’s

CGP Part 3, Subparts 3.3.B.4 and 3.3.C.6.

― Note any stream crossings, if applicable.

― List the storm sewer system or drainage system that stormwater from your site could discharge to and the

waterbody(s) that it ultimately discharges to.

― If any of the waterbodies above are impaired and/or subject to Total Maximum Daily Loads (TMDLs),

please list the pollutants causing the impairment and any specific requirements in the TMDL(s) that are

applicable to construction sites. Your SWPPP should specifically include measures to prevent the

discharge of these pollutants. For more information, see EPA’s CGP Part 1, Subpart 1.3.C.5 and Part 3,

Subpart 3.14.

― For more information, see SWPPP Guide, Chapter 3.A and 3.B.

― Also, for more information and a list of TMDL contacts and links by state, visit

www.epa.gov/npdes/stormwater/tmdl.

Description of receiving waters and storm sewer system:

Stormwater runoff, except run-on entering the vegetated swale, will be discharged to a temporary

sediment trap during construction without direct discharge to any surface waters. As an

emergency overflow, the sediment trap will have a raised outlet structure connected to the town

of Stormville’s MS4 on Johnson Street. Run-on captured by the vegetated swale will be

discharged to the MS4 on Johnson Street through a raised outlet structure.

After construction, stormwater runoff will discharge to the stormwater bioretention area, with an

outlet structure connected to the MS4 on Johnson Street. The vegetated swale will remain as a

permanent stormwater conveyance following construction.

The town of Stormville’s MS4 discharges to Fern Creek, a tributary to the Pine River. The MS4

discharge point is 0.5 mile south of the city. Fern Creek has a reach of 4 miles and flows

southeast before entering the Pine River. Fern Creek is designated for the following uses under

New Hampshire’s Water Quality Standards: Secondary Contact Recreation, Agricultural Water

Supply, and Wildlife Habitat.

Description of impaired waters or waters subject to TMDLs:

Mattock Compliance conducted a review of Fern Creek and the Pine River to determine if the

above receiving waters were impaired or subject to TMDLs. Mattock Compliance first reviewed

the 2006 303(d) list for the state of New Hampshire available at

http://www.des.state.nh.us/WMB/swqa/303dList.html (accessed 01/20/06). Mattock Compliance

did not identify Fern Creek or the Pine River as impaired waters or subject to TMDLs.

ACC

Stormwater Pollution Prevention Plan (SWPPP)

Stormville Postal and Distribution Center

To verify that Fern Creek and the Pine River are not impaired waters or subject to TMDLs,

Mattock Compliance contacted Margaret Foss with the New Hampshire Department of

Environmental Services. Mattock Compliance described the project location, MS4, and receiving

waters during the conversation on 01/20/06 (see Appendix L – Telephone Log #1). Ms. Foss

verified during the telephone call that Fern Creek and the Pine River are not impaired waters or

subject to TMDLs.

1.7 Site Features and Sensitive Areas to be Protected

Instructions:

― Describe unique site features including streams, stream buffers, wetlands, specimen trees, natural

vegetation, steep slopes, or highly erodible soils that are to be preserved.

― Describe measures to protect these features.

― Include these features and areas on your site maps.

― For more information, see SWPPP Guide, Chapter 3.A and 3.B.

Description of unique features that are to be preserved:

This site does not contain any unique features or sensitive areas to be preserved.

Describe measures to protect these features:

N/A

1.8 Potential Sources of Pollution

Instructions:

― Identify and list all potential sources of sediment, which may reasonably be expected to affect the quality of

stormwater discharges from the construction site.

― Identify and list all potential sources of pollution, other than sediment, which may reasonably be expected

to affect the quality of stormwater discharges from the construction site.

― For more information, see SWPPP Guide, Chapter 3.A and EPA’s CGP Part 3, Subpart 3.1.B.

Potential sources of sediment to stormwater runoff:

• Clearing and grubbing operations

• Grading and site excavation operations

• Vehicle tracking

• Topsoil stripping and stockpiling

ACC

Stormwater Pollution Prevention Plan (SWPPP)

Stormville Postal and Distribution Center

• Landscaping operations

Potential pollutants and sources, other than sediment, to stormwater runoff:

• Combined Staging Area—small fueling activities, minor equipment maintenance,

sanitary facilities, and hazardous waste storage.

• Materials Storage Area—general building materials, solvents, adhesives, paving

materials, paints, aggregates, trash, and so on.

• Construction Activity—paving, curb/gutter installation, concrete pouring/mortar/stucco,

and building construction

• Concrete Washout Area

For all potential construction site pollutants, see Table 2 below.

Table 2. Potential construction site pollutants

Material/Chemical Physical Description Stormwater Pollutants Location*

Pesticides (insecticides,

fungicides, herbicides,

rodenticides)

Various colored to

colorless liquid,

powder, pellets, or

grains

Chlorinated hydrocarbons,

organophosphates,

carbamates, arsenic

Herbicides used for noxious

weed control

Fertilizer Liquid or solid grains Nitrogen, phosphorous Newly seeded areas

Plaster White granules or

powder

Calcium sulphate, calcium

carbonate, sulfuric acid

Building construction

Cleaning solvents Colorless, blue, or

yellow-green liquid

Perchloroethylene,

methylene chloride,

trichloroethylene, petroleum

distillates

No equipment cleaning

allowed in project limits

Asphalt Black solid Oil, petroleum distillates Streets and roofing

Concrete White solid/grey liquid Limestone, sand, pH,

chromium

Curb and gutter, building

construction

Glue, adhesives White or yellow liquid Polymers, epoxies Building construction

Paints Various colored liquid Metal oxides, stoddard

solvent, talc, calcium

carbonate, arsenic

Building construction

Curing compounds Creamy white liquid Naphtha Curb and gutter

Wood preservatives Clear amber or dark

brown liquid

Stoddard solvent, petroleum

distillates, arsenic, copper,

chromium

Timber pads and building

construction

Hydraulic oil/fluids Brown oily petroleum

hydrocarbon

Mineral oil Leaks or broken hoses from

equipment

Gasoline Colorless, pale brown

or pink petroleum

hydrocarbon

Benzene, ethyl benzene,

toluene, xylene, MTBE

Secondary

containment/staging area

Diesel Fuel Clear, blue-green to

yellow liquid

Petroleum distillate, oil &

grease, naphthalene, xylenes

Secondary

containment/staging area

ACC

Stormwater Pollution Prevention Plan (SWPPP)

Stormville Postal and Distribution Center

Material/Chemi

cal Physical Description Stormwater Pollutants Location*

Kerosene Pale yellow liquid

petroleum hydrocarbon

Coal oil, petroleum

distillates

Secondary

containment/staging area

Antifreeze/coolant Clear green/yellow

liquid

Ethylene glycol, propylene

glycol, heavy metals

(copper, lead, zinc)

Leaks or broken hoses from

equipment

Sanitary toilets Various colored liquid Bacteria, parasites, and

viruses

Staging area

*(Area where material/chemical is used on-site)

1.9 Endangered Species Certification

Instructions:

― Before beginning construction, determine whether endangered or threatened species or their critical

habitats are on or near your site.

― Adapt this section as needed for state or tribal endangered species requirements and, if applicable,

document any measures deemed necessary to protect endangered or threatened species or their critical

habitats.

― For more information on this topic, see SWPPP Guide, Chapter 3.B and EPA’s CGP Part 1, Subpart

1.3.C.6 and Appendix C.

― Additional information on Endangered Species Act (ESA) provisions for EPA’s Construction General

Permit is at www.epa.gov/npdes/stormwater/esa

Are endangered or threatened species and critical habitats on or near the project area?

Yes No

Describe how this determination was made:

Mattock Compliance conducted a review of any potential endangered or threatened species or

their critical habitats on or near the Stormville Postal and Distribution Center in Hillsborough

County, New Hampshire. Mattock Compliance first reviewed the Endangered Species Act

(ESA) review procedures and endangered species list for New Hampshire at

http://cfpub.epa.gov/npdes/stormwater/esa.cfm (accessed on 01/20/06). Mattock Compliance

did not identify any endangered or threatened species or critical habitats on or near the project

area.

Mattock Compliance also reviewed the endangered or threatened species and critical habitat

listings available from the New Hampshire Fish and Game Department at

http://www.wildlife.state.nh.us/Wildlife/Nongame/endangered_list.htm (accessed on 01/20/06)

and http://www.wildlife.state.nh.us/Wildlife/Wildlife_Plan/critical_habitats_species.htm

(accessed on 01/20/06). To verify that there were no endangered or threatened species or

critical habitats on or near the project area; Mattock Compliance contacted John Canter of the

New Hampshire Fish and Game Department, Wildlife Division on 01/21/06 (see Appendix L –

Telephone Log #2). Mattock Compliance described the location of the construction project,

and Mr. Canter verified in the telephone call that there were no endangered or threatened

ACC

Stormwater Pollution Prevention Plan (SWPPP)

Stormville Postal and Distribution Center

species or critical habitats on or near the project area.

Because no endangered or threatened species or their critical habitats were found during the

screening process, Criterion A will be reported on the NOI form.

If yes, describe the species and/or critical habitat:

N/A

If yes, describe or refer to documentation that determines the likelihood of an impact on

identified species and/or habitat and the steps taken to address that impact. (Note, if species are

on or near your project site, EPA strongly recommends that the site operator work closely with

the appropriate field office of the U.S. Fish and Wildlife Service or National Marine Fisheries

Service. For concerns related to state or tribal listing of species, please contact a state or tribal

official.)

N/A

1.10 Historic Preservation

Instructions:

― Before you begin construction, you should review federal and any applicable state, local, or tribal historic

preservation laws and determine if there are historic sites on or near your project. If so, you might need to

make adjustments to your construction plans or to your stormwater controls to ensure that these historic

sites are not damaged.

― For more information, see SWPPP Guide, Chapter 3.B or contact your state or tribal historic preservation

officer.

Are there any historic sites on or near the construction site?

Yes No

Describe how this determination was made:

Mattock Compliance reviewed the New Hampshire State Register of Historic Places available

from the New Hampshire Division of Historical Resources at

http://www.nh.gov/nhdhr/barnstatereg.html (accessed on 01/24/06) and the National Register

Information System available from the National Park Service at http://www.nr.nps.gov/

(accessed on 1/24/06) to determine if any historic sites are on or near the Stormville Postal and

Distribution Center in Hillsborough County, New Hampshire. No historic sites were identified

from the review.

To verify that there were no historic sites on or near the project area, Mattock Compliance

contacted James Mcconaha, State Historic Preservation Officer, of the New Hampshire

Division of Historical Resources on 01/25/06 (See Appendix L – Telephone Log #3). Mattock

Compliance described the location of the project, and Mr. Mcconaha verified in the telephone

call that there were no historic sites on or near the project area.

ACC

Stormwater Pollution Prevention Plan (SWPPP)

Stormville Postal and Distribution Center

If yes, describe or refer to documentation that determines the likelihood of an impact on this

historic site and the steps taken to address that impact.

N/A

1.11 Applicable Federal, Tribal, State or Local Programs

Instructions:

― Note other applicable federal, tribal, state or local soil and erosion control and stormwater management

requirements that apply to the construction site. See EPA’s CGP Part 3.9.

• An Alteration of Terrain Application has been submitted to New Hampshire DES (see

Appendix D). To complete this application, ACC reviewed the EPA fact sheet Storm

Water Permit Basics: New Hampshire Digging Needs a Federal Permit, which is also

included in Appendix D.

• The SWPPP complies with Stormville’s erosion and sediment control requirements,

including the requirement that sediment traps be designed for a minimum of 1,800 cubic

feet of storage per acre of drainage area [REG 24.56].

• The SWPPP also complies with erosion and sediment control requirement that vegetated

swales must have a minimum length of 100 feet, be vegetated with water-tolerant,

erosion-resistant grasses, and be at least 2 feet above the seasonal high water table and

bedrock [REG 25.40 (b)(1-6)].

ACC

Stormwater Pollution Prevention Plan (SWPPP)

Stormville Postal and Distribution Center

1.12 Maps

Instructions:

― Attach site maps. For most projects, a series of site maps is recommended. The first should show the

undeveloped site and its current features. An additional map or maps should be created to show the

developed site or for more complicated sites show the major phases of development.

These maps should include the following:

― Direction(s) of stormwater flow and a

pproximate slopes before and after major grading activities;

― Areas and timing of soil disturbance;

― Areas that will not be disturbed;

― Natural features to be preserved;

― Locations of major structural and non-structural BMPs identified in the SWPPP;

― Locations and timing of stabilization measures;

― Locations of off-site material, waste, borrow, or equipment storage areas;

― Locations of all waters, including wetlands;

― Locations where stormwater discharges to a surface water;

― Locations of storm drain inlets; and

― Areas where final stabilization has been accomplished.

― For more information, see SWPPP Guide, Chapter 3.C and EPA’s CGP Part 3, Subparts 3.1.B.1 and

3.3.C.

See Appendix B – Site Maps

ACC

Stormwater Pollution Prevention Plan (SWPPP)

Stormville Postal and Distribution Center

SECTION 2: EROSION AND SEDIMENT CONTROL BMPS

Instructions:

― Describe the BMPs that will be implemented to control pollutants in stormwater discharges. For each major

activity identified, do the following

9 Clearly describe appropriate control measures.

9 Describe the general sequence during the construction process in which the measures will be

implemented.

9 Describe the maintenance and inspection procedures that will be used for that specific BMP.

9 Include protocols, thresholds, and schedules for cleaning, repairing, or replacing damaged or failing

BMPs.

9 Identify staff responsible for maintaining BMPs.

9 (If your SWPPP is shared by multiple operators, indicate the operator responsible for each BMP.)

― Categorize each BMP under one of the following 10 areas of BMP activity as described below:

2.1 Minimize disturbed area and protect natural features and soil

2.2 Phase Construction Activity

2.3 Control Stormwater flowing onto and through the project

2.4 Stabilize Soils

2.5 Protect Slopes

2.6 Protect Storm Drain Inlets

2.7 Establish Perimeter Controls and Sediment Barriers

2.8 Retain Sediment On-Site and Control Dewatering Practices

2.9 Establish Stabilized Construction Exits

2.10 Any Additional BMPs

― Note the location of each BMP on your site map(s).

― For any structural BMPs, you should provide design specifications and details and refer to them. Attach

them as appendices to the SWPPP or within the text of the SWPPP.

― For more information, see SWPPP Guide, Chapter 4 and EPA’s CGP Part 3, Subparts 3.3.B.2 and 3.4.A-

D, and Part 4, Subpart 4.5.

― Consult your state’s design manual or one of those listed in Appendix D of the SWPPP Guide.

― For more information or ideas on BMPs, see EPA’s National Menu of BMPs

http://www.epa.gov/npdes/stormwater/menuofbmps

ACC

Stormwater Pollution Prevention Plan (SWPPP)

Stormville Postal and Distribution Center

BMP Description: The proposed site is too small for phased grading to be practical. To minimize

erosion during grading activities, grading and site work will be conducted in late April and May

after snowmelt and during periods of predicted dry weather. The areas of the site that will remain

vegetated after construction will be graded first and stabilized with hydromulch or seeding

immediately after grading activities are completed. All other areas of the construction site will be

stabilized if site work is not planned for more than 14 days. To minimize potential erosion from

the site, only areas necessary to construct the vegetated swale, sediment trap, and construction

exits will be disturbed initially. These areas will be cleared, grubbed, and graded and the above

measures will be installed. These areas will be stabilized immediately after construction but no

later than 14 days after construction ceases. Overall grubbing, clearing, grading will be

conducted over a 2-week period in May to limit erosion from the site. Areas graded during this

time period will be stabilized with hydromulch immediately after construction but no later than

14 days after construction ceases.

Installation Schedule:

For a timeline of construction activity, see Section 1.3.

Responsible Staff: ACC

2.3 Control Stormwater Flowing onto and through the Project

Instructions:

― Describe structural practices (e.g., diversions, berms, ditches, storage basins) including design

specifications and details used to divert flows from exposed soils, retain or detain flows, or otherwise limit

runoff and the discharge of pollutants from exposed areas of the site. (For more information, see SWPPP

Guide, Chapter 4, ESC Principle 3.)

Vegetated Swale

BMP Description: A vegetated swale will be installed along the northern perimeter of the site to

capture stormwater run-on from the adjacent property. The swale will convey stormwater to a

raised storm drain inlet in the northwest corner of the site. The inlet will be raised 1 foot above

the bottom of the swale to allow for infiltration of the run-on. The vegetated swale will have a

trapezoidal shape with a slope ratio of 2:1. The bottom of the swale will be at least 2 feet above

the seasonal high water table and bedrock. The slopes of the swale will be stabilized with a dense

cover of water-tolerant, erosion-resistant grasses, mulch and erosion control blankets

immediately after final grade is reached. The vegetated swale will remain as a permanent

stormwater structure after construction is complete. For design specifications, see Figure 1.

Installation Schedule:

The vegetated swale will be installed before site grading

operations begin at the construction site.

Maintenance and

Inspection:

The swale will be inspected for erosion and structural failures

weekly and immediately after storm events. Before vegetation has

been established in the swale, it will be inspected for erosion and

accumulation of debris and sediment. Remove debris, sediment,

and repair erosion and embankments immediately.

Responsible Staff:

ACC

Stormwater Pollution Prevention Plan (SWPPP)

Stormville Postal and Distribution Center

Figure 1. Vegetated swale

Design Specifications

1. The swale will have side slopes no steeper than 2:1 and a minimum length of 100 feet,

per Stormville’s erosion and sediment control requirements [REG 25.40 (b)(1-2)].

2. The slopes of the swale will be stabilized with a dense cover of water-tolerant, erosion-

resistant grasses, per Stormville’s erosion and sediment control requirements [REG 25.40

(b)(5)].

3. The bottom of the swale will be at least 2 feet above the seasonal high water table and

bedrock, per Stormville’s erosion and sediment control requirements [REG 25.40 (b)(6)].

4. The swale will have a positive drainage to convey runoff to the storm drain inlet.

2.4 Stabilize Soils

Instructions:

― Describe controls (e.g., interim seeding with native vegetation, hydroseeding) to stabilize exposed soils

where construction activities have temporarily or permanently ceased. Also describe measures to control

dust generation. Avoid using impervious surfaces for stabilization whenever possible. (For more

information, see SWPPP Guide, Chapter 4, ESC Principle 4, EPA’s CGP Part 3, Subpart 3.13.D.)

― Also, see EPA’s Seeding BMP Fact Sheet at

www.epa.gov/npdes/stormwater/menuofbmps/construction/seeding

Temporary Stabilization

BMP Description: Hydromulching will provide immediate protection to exposed soils where

construction will cease for more than 14 days and over the winter months. Straw mulch and

wood fiber will be mixed with a tackifier (amount specified per manufacturer’s instructions) and

applied uniformly by machine with an application rate of 90–100 pounds (2–3 bales) per 1,000

square feet or 2 tons (100–200 bales) per acre. If the tackifier does not appear effective in

anchoring the mulch to the disturbed soil, crimping equipment will be used to provide additional

binding to the soil. The mulch will cover 75 to 90 percent of the ground surface. In areas, where

hydromulching is inaccessible, straw mulch will be applied by hand with an application rate of

90–100 pounds (2–3 bales) per 1,000 square feet.

ACC

Stormwater Pollution Prevention Plan (SWPPP)

Stormville Postal and Distribution Center

Winter stabilization will occur between November 15 and March 15. All disturbed areas are

scheduled to be stabilized well before winter; however, if any vegetated areas show signs of

erosion, mulch will be applied at the same rate as described above.

Permanent Temporary

Installation Schedule:

Portions of the site where construction activities will temporarily

cease for more than 14 days will be stabilized with mulch.

Winter stabilization will occur between November 15

and

March 15.

Maintenance and

Inspection:

Mulched areas will be inspected weekly and after storm events to

check for movement of mulch or erosion. If washout, breakage, or

erosion occurs, the surface will be repaired, and new mulch will

be applied to the damaged area.

Responsible Staff:

ACC

Permanent Stabilization

BMP Description: Permanent stabilization will be done immediately after the final design grades

are achieved but no later than 14 days after construction ceases. Native species of plants will be

used to establish vegetative cover on exposed soils. Permanent stabilization will be completed in

accordance with the final stabilization procedures in Section 7.

Permanent Temporary

Installation Schedule:

Portions of the site where construction activities have

permanently ceased will be stabilized, as soon as possible but no

later than 14 days after construction ceases.

Maintenance and

Inspection:

All seeded areas will be inspected weekly during construction

activities for failure and after storm events until a dense cover of

vegetation has been established. If failure is noticed at the seeded

area, the area will be reseeded, fertilized, and mulched

immediately. After construction is completed at the site,

permanently stabilized areas will be monitored until final

stabilization is reached.

Responsible Staff:

ACC

Dust Control

BMP Description: Dust from the site will be controlled by using a mobile pressure-type

distributor truck to apply potable water to disturbed areas. The mobile unit will apply water at a

rate of 300 gallons per acre and minimized as necessary to prevent runoff and ponding.

Dust control will be implemented as needed once site grading has

been initiated and during windy conditions (forecasted or actual

wind conditions of 20 mph or greater) while site grading is

occurring. Spraying of potable water will be performed no more

than three times a day during the months of May–September and

Installation Schedule:

ACC

Stormwater Pollution Prevention Plan (SWPPP)

Stormville Postal and Distribution Center

once per day during the months of October–April or whenever the

dryness of the soil warrants it.

Maintenance and

Inspection:

At least one mobile unit will be available at all times to distribute

potable water to control dust on the project area. Each mobile unit

will be equipped with a positive shutoff valve to prevent over

watering of the disturbed area. For vehicle and equipment

maintenance practices, see Section 3, Part 3.4.

Responsible Staff:

ACC

2.5 Protect Slopes

Instructions:

― Describe controls (e.g., erosion control blankets, tackifiers) including design specifications and details that

will be implemented to protect all slopes. (For more information, see SWPPP Guide, Chapter 4, ESC

Principle 5.)

― Also, see EPA’s Geotextiles BMP Fact Sheet at

www.epa.gov/npdes/stormwater/menuofbmps/construction/geotextiles

Geotextile Erosion Control Blanket

BMP Description: Geotextile erosion control blankets will be used to provide stabilization for

the slopes in the vegetated swale and sediment trap. The blanket will cover the entire area of the

graded slope and bottom channel. The bottom and side slopes will be seeded and mulched before

the blanket is applied. The blanket will be installed by digging a small trench on the upside of the

slope, 12 inches wide by 6 inches deep, and stapling the leading edge of the blanket in the trench.

The blanket will be rolled down the slope slowly to maintain soil contact and stapled in 12-inch

intervals. If the blanket cannot cover the entire slope, the blankets will be overlapped (minimum

of 2 inches) and stapled at the overlapped edge. The erosion control blanket will always be

installed according to the manufacturer’s instructions and specifications. For design

specifications, see Figure 2.

Installation Schedule:

The erosion control blankets will be installed once the vegetated

swale and sediment trap have reached final grade.

Maintenance and

Inspection:

The erosion control blanket will be inspected weekly and

immediately after storm events to determine if cracks, tears, or

breaches have formed in the fabric; if so, the blanket will be

repaired or replaced immediately. Good contact with the soil must

be maintained and erosion should not occur under the blanket.

Any areas where the blanket is not in close contact with the

ground will be repaired or replaced.

Responsible Staff:

ACC

Stormwater Pollution Prevention Plan (SWPPP)

Stormville Postal and Distribution Center

Figure 2. Erosion control blanket

Design Specifications

1. Slope surface will be free of rocks, clods, sticks and grass. The blankets will have good

soil contact.

2. Lay blankets loosely and staple to maintain direct contact with the soil. Do not stretch.

3. Install per manufacturer’s recommendations.

2.6 Protect Storm Drain Inlets

Instructions:

― Describe controls (e.g., inserts, rock-filled bags, or block and gravel) including design specifications and

details that will be implemented to protect all inlets receiving stormwater from the project during the entire

project. (For more information, see SWPPP Guide, Chapter 4, ESC Principle 6.)

― Also, see EPA’s Storm Drain Inlet Protection BMP Fact Sheet at

www.epa.gov/npdes/stormwater/menuofbmps/construction/storm_drain

ACC

Stormwater Pollution Prevention Plan (SWPPP)

Stormville Postal and Distribution Center

Existing Storm Drain Inlets

BMP Description: Existing storm drain inlets on Johnson Street and Sixth Avenue will be

protected from sediment by commercially available catch basin inserts. Commercial devices,

such as the catch basin inserts that are installed inside the inlet, will be used because of the large

traffic volumes on these roads. These commercial devices were selected over gravel bag or block

and gravel filters because of safety concerns. The catch basins will be removed once the

construction site has been permanently stabilized.

Installation Schedule:

Inlet catch basins will be installed along Johnson Street and Sixth

Avenue before construction activities begin on-site.

Maintenance and

Inspection:

The catch basin inserts will be inspected weekly and immediately

after storm events. If the basin insert becomes clogged with

sediment, the insert will be removed and cleaned or replaced per

the manufacturer’s recommendations.

Responsible Staff:

ACC

2.7 Establish Perimeter Controls and Sediment Barriers

Instructions:

― Describe structural practices (e.g., silt fences or fiber rolls) including design specifications and details to

filter and trap sediment before it leaves the construction site. (For more information, see SWPPP Guide,

Chapter 4, ESC Principle 7.)

― Also see, EPA’s Silt Fence BMP Fact Sheet at

www.epa.gov/npdes/stormwater/menuofbmps/construction/silt_fences or Fiber Rolls BMP Fact Sheet at

www.epa.gov/npdes/stormwater/menuofbmps/construction/fiber_rolls

Silt Fence

BMP Description: Silt fences will be installed along the north and west perimeters of the site

and around the topsoil stockpile. Silt fences will be installed by excavating a 12-inch-deep trench

along the line of proposed installation. Wooden posts supporting the silt fence will be spaced 4 to

6 feet apart and driven securely into the ground; a minimum of 18 to 20 inches deep. The silt

fence will be fastened securely to the wooden posts with wire ties spaced every 24 inches at the

top, mid section, and bottom of the wooden post. The bottom edge of the silt fence will extend

across the bottom of the trench and the trench will be backfilled and compacted to prevent

stormwater and sediment from discharging underneath the silt fence. For design specifications,

see Figure 3.

Installation Schedule:

The silt fences will be installed before construction begins at the

site and around topsoil stockpiles once they have been

established.

ACC

Stormwater Pollution Prevention Plan (SWPPP)

Stormville Postal and Distribution Center

Maintenance and

Inspection:

Responsible Staff:

Silt fences will be inspected weekly and immediately after storm

events to ensure it is intact and that there are no gaps where the

fence meets the ground or tears along the length of the fence. If

gaps or tears are found during the inspection, the fabric will be

repaired or replaced immediately. Accumulated sediment will be

removed from the fence base if it reaches one-third the height of

the silt fence and hauled off-site for disposal at Middletown

Landfill. If accumulated sediment is creating noticeable strain on

the fabric and the fence might fail from a sudden storm event, the

sediment will be removed more frequently. Before the fence is

removed from the project area, the sediment will be removed. The

anticipated life span of the silt fence is 6 months and will likely

need to be replaced after this period.

ACC

Figure 3. Silt fence

Design Specifications

1. The silt fence will be constructed long enough to extend across the expected flow path.

2. The support posts will be a minimum of 4.5 feet and driven a minimum of 18 to 20

inches in the ground. Posts will be spaced a maximum of 6 feet apart. Fabric will be

securely fastened to posts with half-inch staples or 16-gauge wire ties spaced a maximum

of 6 inches.

3. A 12-inch trench will be excavated along the uphill side of the silt fence posts. The

bottom edge of the fabric will extend across the bottom of the trench. The trench will be

backfilled to 4 inches above ground and compacted to bury and secure the bottom of the

filter fabric.

ACC

Stormwater Pollution Prevention Plan (SWPPP)

Stormville Postal and Distribution Center

2.8 Retain Sediment On-Site

Instructions:

― Describe sediment control practices (e.g., sediment trap or sediment basin), including design

specifications and details (volume, dimensions, outlet structure) that will be implemented at the

construction site to retain sediments on-site. (For more information, see SWPPP Guide, Chapter 4, ESC

Principle 8 or EPA’s CGP Part 3.13.E.)

― Also, see EPA’s Sediment Basin BMP Fact Sheet at

www.epa.gov/npdes/stormwater/menuofbmps/construction/sediment_basins

Sediment Trap

BMP Description: A temporary pipe outlet sediment trap will be constructed on the northwest

portion of the construction site to remove sediment from stormwater runoff for the site. The trap

will be constructed to have a total volume of 7,500 cubic feet. The design volume is based on

Stormville’s erosion and sediment control requirements (REG 24.56), which requires a minimum

of 1,800 cubic feet of storage per acre of drainage area for a sediment trap.

The trap will discharge through a riser outlet with a trash rack. The pipe outlet will be connected

to the town’s storm sewer system and is designed to discharge only for storms one-half inch or

greater. The slopes of the trap will be stabilized with erosion control blankets. Influent to the trap

will be supplied from natural drainage of the site. For design specifications, see Figure 4. The

sediment trap will be converted to a permanent stormwater bioretention area following

construction activities, see Section 4.

Installation Schedule:

The sediment trap will be installed before overlot grading

operations commence at the construction site.

Maintenance and

Inspection:

The trap will be inspected weekly and after storm events. The trap

will be checked for signs of erosion, seepage, and structural

damage. The outlet and trash rack will be checked for any damage

or obstructions and any damage present will be repaired and

obstructions removed. Sediment will be removed and the trap

restored to its original dimensions when the sediment has

accumulated to one-half the design depth of the trap. The

removed sediments will be hauled off-site for disposal at

Middletown Landfill.

Responsible Staff:

ACC

Stormwater Pollution Prevention Plan (SWPPP)

Stormville Postal and Distribution Center

Figure 4. Pipe outlet sediment trap

Design Specifications

1. The area will be cleared, grubbed, and stripped of any vegetation and root mat.

2. The fill material of the embankment will be free any vegetation, root mat, rocks, or

oversized stones. The embankment will be compacted by traversing with equipment.

3. Slopes will be stabilized in accordance with Part 2.4 of this section.

2.9 Establish Stabilized Construction Exits

Instructions:

― Describe location(s) of vehicle entrance(s) and exit(s), procedures to remove accumulated sediment off-

site (e.g., vehicle tracking), and stabilization practices (e.g., stone pads or wash racks or both) to minimize

off-site vehicle tracking of sediments and discharges to stormwater. (For more information, see SWPPP

Guide, Chapter 4, ESC Principle 9 and EPA’s CGP Part 3, Subparts 3.4.G and 3.13.B.)

― Also, see EPA’s Construction Entrances BMP Fact Sheet at

www.epa.gov/npdes/stormwater/menuofbmps/construction/cons_entrance

Stabilized Construction Exits

BMP Description: Anti-tracking pads consisting of stone and corrugated steel panels (rumble

pad) will be installed at the exits to Sixth Avenue, as identified on the site map, to prevent the

off-site transport of sediment by construction vehicles. The anti-tracking pads will be at least 50

feet long, a minimum of 10 feet wide, flared at the end closest to the paved road, and will consist

of a 6-inch-thick layer of crushed stone (2 inches in diameter). The crushed stone will be placed

over a layer of geotextile filter fabric to reduce the mitigation of sediment from the underlying

soil. The rumble pad will be placed on top of the stone. Orange-colored plastic mesh fence will

be installed along the length of the construction exit to keep construction vehicles and equipment

on the anti-tracking pads. For design specifications, see Figure 5.

Installation Schedule:

The stabilized exits will be installed before construction begins on

the site. The stone will remain in place until the subgrade of

pavement is installed at the site. The anti-tracking pads will be

ACC

Stormwater Pollution Prevention Plan (SWPPP)

Stormville Postal and Distribution Center

placed on the pavement and will remain until all areas of the site

have been stabilized.

Maintenance and

The exits will be inspected weekly and after storm events or

Inspection:

heavy use. The exits will be maintained in a condition that will

prevent tracking or flowing of sediment onto Sixth Avenue. This

could require adding additional crushed stone to the exit. All

sediment tracked, spilled, dropped, or washed onto Sixth Avenue

will be swept up immediately and hauled off-site for disposal at

Middletown Landfill. Sediment will be swept from the anti-

tracking pad at least weekly, or more often if necessary. If excess

sediment has clogged the pad, the exit will be topdressed with

new crushed stone. Replacement of the entire pad might be

necessary when the pad becomes completely filled with sediment.

The pad will be reshaped as needed for drainage and runoff

control. Broken road pavement as a result of construction

activities on roadways immediately adjacent to the project site

will be repaired immediately. The stone anti-tracking pad will be

removed before the subgrade of pavement is applied to the

parking lot. The removed stone and sediment from the pad will be

hauled off-site and disposed of at Middletown Landfill.

Responsible Staff:

ACC

Figure 5. Stabilized construction exit

Design Specifications

1. Stone applied to the pad will be 2-inch stone.

2. The length of the pad will not be less than 50 feet.

3. The thickness of the pad will not be less than 6 inches.

4. The width of pad will be a minimum of 10 feet.

5. Filter fabric will be placed over the entire area before placing the stone.

ACC

Stormwater Pollution Prevention Plan (SWPPP)

Stormville Postal and Distribution Center

2.10 Additional BMPs

Instructions:

― Describe additional BMPs that do not fit into the above categories.

Street Sweeping

BMP Description: Super Sweeping will perform street sweeping and vacuuming on Johnson

Street and Sixth Avenue. Super Sweeping will use a regenerative air sweeper to remove

sediments and other contaminants directly from the paved surfaces.

Installation Schedule:

Street sweeping will occur weekly and before forecasted storm

events on Johnson Street and Sixth Avenue.

Maintenance and

Inspection:

All materials collected during street sweeping will be disposed of

at an off-site location by the subcontractor.

Responsible Staff:

ACC

Cooperative Agreement and Operator Communication

BMP Description: All construction operators working on the Stormville Postal and Distribution

Center project are required to sign the Construction Operator’s Cooperative Agreement (see

Section 1, Part 1.2) and agree to abide by the conditions of the agreement throughout the

duration of the construction project. ACC will attend biweekly meetings with the USPS to

discuss any issues related to implementation of this SWPPP and compliance with the

Construction General Permit. ACC will maintain the SWPPP documentation and will conduct

and document self-inspections in all areas of the site. ACC will provide copies of inspection

reports to USPS immediately following each inspection.

ACC

Responsible Staff:

ACC

Stormwater Pollution Prevention Plan (SWPPP)

Stormville Postal and Distribution Center

SECTION 3: GOOD HOUSEKEEPING BMPS

Instructions:

― Describe the key good housekeeping and pollution prevention (P2) measures that will be implemented to

control pollutants in stormwater.

― Categorize each good housekeeping and pollution prevention (P2) BMP under one of the following seven

categories:

3.1 Material Handling and Waste Management

3.2 Establish Proper Building Material Staging Areas

3.3 Designate Washout Areas

3.4 Establish Proper Equipment/Vehicle Fueling and Maintenance Practices

3.5 Allowable Non-Stormwater Discharges and Control Equipment/Vehicle Washing

3.6 Spill Prevention and Control Plan

3.7 Any Additional BMPs

― For more information, see SWPPP Guide, Chapter 5 and EPA’s CGP Part 3, Subparts 3.4.(F), (G), (H),

and (I).

― Consult your state’s design manual or resources in Appendix D of the SWPPP Guide.

― For more information or ideas on BMPs, see EPA’s National Menu of BMPs

http://www.epa.gov/npdes/stormwater/menuofbmps

3.1 Material Handling and Waste Management

Instructions:

― Describe measures (e.g., trash disposal, sanitary wastes, recycling, and proper material handling) to

prevent the discharge of solid materials to waters, except as authorized by a permit issued under section

404 of the CWA (For more information, see SWPPP Guide, Chapter 5, P2 Principle 1.)

― Also, see EPA’s General Construction Site Waste Management BMP Fact Sheet at

www.epa.gov/npdes/stormwater/menuofbmps/construction/cons_wasteman

Waste Materials

BMP Description: All waste materials will be collected and disposed of into two metal trash

dumpsters in the materials storage area. Dumpsters will have a secure watertight lid, be placed

away from stormwater conveyances and drains, and meet all federal, state, and municipal

regulations. Only trash and construction debris from the site will be deposited in the dumpster.

No construction materials will be buried on-site. All personnel will be instructed, during tailgate

training sessions, regarding the correct disposal of trash and construction debris. Notices that

state these practices will be posted in the office trailer and the individual who manages day-to-

day site operations will be responsible for seeing that these practices are followed.

Installation Schedule:

Trash dumpsters will be installed once the materials storage area

has been established.

ACC

Stormwater Pollution Prevention Plan (SWPPP)

Stormville Postal and Distribution Center

Maintenance and

Inspection:

Responsible Staff:

The dumpsters will be inspected weekly and immediately after

storm events. The dumpster will be emptied weekly and taken to

Middletown Landfill by Ways Waste and Sanitary Services. If

trash and construction debris are exceeding the dumpster’s

capacity, the dumpsters will be emptied more frequently.

ACC

Hazardous Waste Materials

BMP Description: All hazardous waste materials such as oil filters, petroleum products, paint,

and equipment maintenance fluids will be stored in structurally sound and sealed shipping

containers, within the hazardous materials storage area. Hazardous waste materials will be stored

in appropriate and clearly marked containers and segregated from other non-waste materials.

Secondary containment will be provided for all waste materials in the hazardous materials

storage area and will consist of commercially available spill pallets. Additionally, all hazardous

waste materials will be disposed of in accordance with federal, state, and municipal regulations.

Hazardous waste materials will not be disposed of into the on-site dumpsters. All personnel will

be instructed, during tailgate training sessions, regarding proper procedures for hazardous waste

disposal. Notices that state these procedures will be posted in the office trailer and the individual

who manages day-to-day site operations will be responsible for seeing that these procedures are

followed.

Installation Schedule:

Shipping containers used to store hazardous waste materials will

be installed once the site materials storage area has been installed.

Maintenance and

Inspection:

The hazardous waste material storage areas will be inspected

weekly and after storm events. The storage areas will be kept

clean, well organized, and equipped with ample cleanup supplies

as appropriate for the materials being stored. Material safety data

sheets, material inventory, and emergency contact numbers will

be maintained in the office trailer.

Responsible Staff:

ACC

Sanitary Waste

BMP Description: Two temporary sanitary facilities (portable toilets) will be provided at the site

throughout the construction phase. The toilets will be in the staging area. The portable toilets will

be located away from a concentrated flow paths and traffic flow and will have collection pans

underneath as secondary containment.

Installation Schedule:

The portable toilets will be brought to the site once the staging

area as been established.

ACC

Stormwater Pollution Prevention Plan (SWPPP)

Stormville Postal and Distribution Center

Maintenance and

Inspection:

Responsible Staff:

Recycling

All sanitary waste will be collected from the portable facilities a

minimum of three times per week by Ways Waste and Sanitary

Services. The portable toilets will be inspected weekly for

evidence of leaking holding tanks. Toilets with leaking holding

tanks will be removed from the site and replaced with new

portable toilets.

ACC

BMP Description: Wood pallets, cardboard boxes, and other recyclable construction scraps will

be disposed of in a designated dumpster for recycling. The dumpster will have a secure

watertight lid, be placed away from stormwater conveyances and drains and meet all local and

state solid-waste management regulations. Only solid recyclable construction scraps from the site

will be deposited in the dumpster. All personnel will be instructed, during tailgate training

sessions, regarding the correct procedure for disposal of recyclable construction scraps. Notices

that state these procedures will be posted in the office trailer, and the individual who manages

day-to-day site operations will be responsible for seeing that these procedures are followed.

Installation Schedule:

Designated recycling dumpsters will be installed once the

combined staging area has been established.

Maintenance and

Inspection:

The recycling dumpster will be inspected weekly and

immediately after storm events. The recycling dumpster will be

emptied weekly and taken to an approved recycling center by

Ways Waste and Sanitary Services. If recyclable construction

wastes are exceeding the dumpster’s capacity, the dumpsters will

be emptied more frequently.

Responsible Staff:

ACC

3.2 Establish Proper Building Material Staging Areas

Instructions:

― Describe construction materials expected to be stored on-site and procedures for storage of materials to

minimize exposure of the materials to stormwater. (For more information, see SWPPP Guide, Chapter 5,

P2 Principle 2 and EPA’s CGP Part 3.4.H.)

Materials Storage Area

BMP Description: Construction equipment and maintenance materials will be stored at the

combined staging area and materials storage areas. Gravel bag berms will be installed around the

perimeter to designate the staging and materials storage area. A watertight shipping container

will be used to store hand tools, small parts, and other construction materials.

ACC

Stormwater Pollution Prevention Plan (SWPPP)

Stormville Postal and Distribution Center

disposed of according to the maintenance section below, and the area will be stabilized. For

design specifications, see Figure 5.

Installation Schedule:

The washout area will be constructed before concrete pours occur

at the site.

Maintenance and

Inspection:

The washout areas will be inspected daily to ensure that all

concrete washing is being discharged into the washout area, no

leaks or tears are present, and to identify when concrete wastes

need to be removed. The washout areas will be cleaned out once

the area is filled to 75 percent of the holding capacity. Once the

area’s holding capacity has been reached, the concrete wastes will

be allowed to harden; the concrete will be broken up, removed,

and taken to Middletown Landfill for disposal. The plastic

sheeting will be replaced if tears occur during removal of concrete

wastes from the washout area.

Responsible Staff:

ACC

Figure 6. Above grade concrete washout

Design Specifications

1. Temporary concrete washout type Above Grade will be constructed as shown above,

with a recommended minimum length and minimum width of 10 feet.

2. The washout will be a minimum of 50 feet from storm drain inlets.

3. Plastic lining will be free of holes, tears, or other defects that compromise the

impermeability of the material.

ACC

Stormwater Pollution Prevention Plan (SWPPP)

Stormville Postal and Distribution Center

3.4 Establish Proper Equipment/Vehicle Fueling and

Maintenance Practices

Instructions:

― Describe equipment/vehicle fueling and maintenance practices that will be implemented to control

pollutants to stormwater (e.g., secondary containment, drip pans, and spill kits) (For more information, see

SWPPP Guide, Chapter 5, P2 Principle 4.)

― Also, see EPA’s Vehicle Maintenance and Washing Areas BMP Fact Sheet at

www.e

ov/n

des/stormwater/menuofbm

s/construction/vehicile_maintain

Vehicle/Equipment Fueling and Maintenance

BMP Description: Several types of vehicles and equipment will be used on-site throughout the

project, including graders, scrapers, excavators, loaders, paving equipment, rollers, trucks and

trailers, backhoes, and forklifts. All major equipment/vehicle fueling and maintenance will be

performed off-site. A small, 20-gallon pickup bed fuel tank will be kept on-site in the combined

staging area. When vehicle fueling must occur on-site, the fueling activity will occur in the

staging area. Only minor equipment maintenance will occur on-site. All equipment fluids

generated from maintenance activities will be disposed of into designated drums stored on spill

pallets in accordance with Part 3.1. Absorbent, spill-cleanup materials and spill kits will be

available at the combined staging and materials storage area. Drip pans will be placed under all

equipment receiving maintenance and vehicles and equipment parked overnight.

Installation Schedule:

BMPs implemented for equipment and vehicle maintenance and

fueling activities will begin at the start of the project.

Maintenance and

Inspection:

Inspect equipment/vehicle storage areas and fuel tank weekly and

after storm events. Vehicles and equipment will be inspected on

each day of use. Leaks will be repaired immediately, or the

problem vehicle(s) or equipment will be removed from the project

site. Keep ample supply of spill-cleanup materials on-site and

immediately clean up spills and dispose of materials properly.

Responsible Staff:

ACC

3.5 Control Equipment/Vehicle Washing

Instructions:

― Describe equipment/vehicle washing practices that will be implemented to control pollutants to stormwater.

(For more information, see SWPPP Guide, Chapter 5, P2 Principle 5.)

― Also, see EPA’s Vehicle Maintenance and Washing Areas BMP Fact Sheet at

www.epa.gov/npdes/stormwater/menuofbmps/construction/vehicile_maintain

ACC

Stormwater Pollution Prevention Plan (SWPPP)

Stormville Postal and Distribution Center

BMP Description: All equipment and vehicle washing will be performed off-site.

Installation Schedule:

N/A

Maintenance and

Inspection:

N/A

Responsible Staff:

ACC

3.6 Spill Prevention and Control

Instructions:

― Describe the spill prevention and control procedures to include ways to reduce the chance of spills, stop

the source of spills, contain and clean up spills, dispose of materials contaminated by spills, and train

personnel responsible for spill prevention and control. (For more information, see SWPPP Guide, Chapter

5, P2 Principle 6 and EPA’s CGP Parts 4.3 and 4.4.)

― Also, see EPA’s Spill Prevention and Control Plan BMP Fact sheet at

www.epa.gov/npdes/stormwater/menuofbmps/construction/spill_control

Spill Prevention and Control Procedures

BMP Description:

i. Employee Training: All employees will be trained via biweekly tailgate sessions, as

detailed in Section 6, Part 6.3.

ii. Vehicle Maintenance: Vehicles and equipment will be maintained off-site. All

vehicles and equipment including subcontractor vehicles will be checked for leaking

oil and fluids. Vehicles leaking fluids will not be allowed on-site. Drip pans will be

placed under all vehicles and equipment that are parked overnight.

iii. Hazardous Material Storage: Hazardous materials will be stored in accordance with

Section 3, Part 1 and federal and municipal regulations.

iv. Spill Kits: Spill kits will be within the materials storage area and concrete washout

areas.

v. Spills: All spills will be cleaned up immediately upon discovery. Spent absorbent

materials and rags will be hauled off-site immediately after the spill is cleaned up for

disposal at Middletown Landfill. Spills large enough to discharge to surface water

will be reported to the National Response Center at 1-800-424-8802.

vi. Material safety data sheets, a material inventory, and emergency contact information

will be maintained at the on-site project trailer.

Installation Schedule:

The spill prevention and control procedures will be implemented

once construction begins on-site.

Maintenance and

Inspection:

All personnel will be instructed, during tailgate training sessions,

regarding the correct procedures for spill prevention and control.

Notices that state these practices will be posted in the office

trailer, and the individual who manages day-to-day site operations

will be responsible for seeing that these procedures are followed.

Responsible Staff:

ACC

Stormwater Pollution Prevention Plan (SWPPP)

Stormville Postal and Distribution Center

3.7 Any Additional BMPs

Instructions:

― Describe any additional BMPs that do not fit into the above categories. Indicate the problem they are

intended to address.

BMP Description: No Additional BMPs were identified.

Installation Schedule:

N/A

Maintenance and

Inspection:

N/A

Responsible Staff:

ACC

3.8 Allowable Non-Stormwater Discharge Management

Instructions:

― Identify all allowable sources of non-stormwater discharges that are not identified. The allowable non-

stormwater discharges identified in Part 1.3.B of EPA’s CGP include

9 Discharges from fire-fighting activities

9 Fire hydrant flushings

9 Waters used to wash vehicles where detergents are not used

9 Water used to control dust in accordance with EPA’s CGP, Part 3, Subpart 3.4.G

9 Potable water including uncontaminated water line flushings

9 Routine external building wash down that does not use detergents

9 Pavement wash waters where spills or leaks of toxic or hazardous materials have not occurred

(unless all spilled material has been removed) and where detergents are not used

9 Uncontaminated air conditioning or compressor condensate

9 Uncontaminated ground water or spring water

9 Foundation or footing drains where flows are not contaminated with process materials such as

solvents

9 Uncontaminated excavation dewatering

9 Landscape irrigation

― Identify measures used to eliminate or reduce these discharges and the BMPs used to prevent them from

becoming contaminated.

― For more information, see SWPPP Guide, Chapter 3.A or EPA’s CGP Part 1.3.B and 3.5.

List allowable non-stormwater discharges and the measures used to eliminate or reduce them and to prevent them

from becoming contaminated:

Any changes in construction activities that produce other allowable non-stormwater discharges

will be identified, and the SWPPP will be amended and the appropriate erosion and sediment

control will be implemented.

ACC

Stormwater Pollution Prevention Plan (SWPPP)

Stormville Postal and Distribution Center

Water Used to Control Dust

BMP Description: Dust control will be implemented as needed once site grading has begun and

during windy conditions (forecasted or actual wind conditions of 20 mph or greater) while site

grading is occurring. Spraying of potable water at a rate of 300 gallons per acre or less will be

performed by a mobile pressure-type distributor truck no more than three times a day during the

months of May–September and once per day during the months of October–April or whenever

the dryness of the soil warrants it.

ACC

Responsible Staff:

Uncontaminated Excavation Dewatering

BMP Description: Because construction for this site is being conducted during the dry season,

dewatering activities are not expected to occur at the project site. If dewatering does occur, the

SWPPP will be revised to address the need for appropriate BMPs.

ACC

Responsible Staff:

Landscape Irrigation

BMP Description: Irrigation waters will not be sprayed onto impermeable surfaces such as

paved driveways and roads. Waters will be directed onto soil and lawns by using hoses and

correctly sized sprinklers with adjustable spray patterns. To avoid discharges of irrigation waters,

the sprinklers will have low-flow rates and increased watering time. The irrigated area will be

inspected for excess watering and to adjust watering times and schedules.

ACC

Responsible Staff:

ACC

Stormwater Pollution Prevention Plan (SWPPP)

Stormville Postal and Distribution Center

SECTION 4: SELECTING POST-CONSTRUCTION BMPs

Instructions:

― Describe all post-construction stormwater management measures that will be installed during the

construction process to control pollutants in stormwater discharges after construction operations have

been completed. Examples of post-construction BMPs include the following:

9 Biofilters

9 Detention/retention devices

9 Earth dikes, drainage swales, and lined ditches

9 Infiltration basins

9 Porous pavement

9 Other proprietary permanent structural BMPs

9 Outlet protection/velocity dissipation devices

9 Slope protection

9 Vegetated strips and/or swales

― Identify any applicable federal, state, local, or tribal requirements for design or installation.

― Describe how low-impact designs or smart growth considerations have been incorporated into the design.

― For any structural BMPs, you should have design specifications and details and refer to them. Attach them

as appendices to the SWPPP or within the text of the SWPPP.

― For more information on this topic, see your state’s stormwater manual.

― You might also want to consult one of the references listed in Appendix D of the SWPPP Guide and EPA’s

CGP Part 3, Subparts 3.4.E and 3.9.

― Visit the post-construction section of EPA’s Menu of BMPs at: www.epa.gov/npes/menuofbmps

Bioretention Area

BMP Description: During the final stabilization phase of construction, the sediment trap will be

converted to a permanent bioretention area. The existing sediment trap will be graded and

excavated to a minimum depth of 5 feet. The outlet structure does not need to be modified for

this conversion process. An underdrain will be installed and tied into the bottom of the existing

outlet structure to completely drain the planting soil to avoid oversaturation. The underdrain will

be covered with 8 inches of 1- to 2-inch pea gravel and backfilled with a homogeneous soil mix,

consisting of sand (50 percent), topsoil (20–30 percent) and organic leaf compost (20–30

percent). The backfill will extend to a depth of 12 inches below the top of the bioretention area,

which allows a ponding depth of approximately 6–8 inches. The bioretention area will be planted

with native species of vegetation consisting of small trees, shrubs, and grasses. A 2- to 3-inch

layer of wood mulch will be applied after planting stabilize the area and allow vegetation to be

established. Two riprap spillways will be constructed, as detailed on the site map, to reduce

runoff velocity before entering the bioretention area. Design specifications are omitted from this

example SWPPP.

ACC

Stormwater Pollution Prevention Plan (SWPPP)

Stormville Postal and Distribution Center

Installation Schedule:

The basin will be converted to a permanent bioretention area

during the final stabilization phase of construction.

Maintenance and

The bioretention area will be inspected weekly and after storm

Inspection:

events during construction. The area will be checked for signs of

erosion, seepage, and structural damage. Erosion, seepage, and

structural damage will be repaired immediately. The outlet and

trash rack will be checked for any damage or obstructions and any

damage found will be repaired and obstructions removed.

Immediately after the completion of construction, the plant

material will be watered for 14 consecutive days unless there is

sufficient natural rainfall. The area will be monitored until final

stabilization is reached. Following completion of site construction

and final stabilization, maintenance and inspection

responsibilities (see Appendix L – Post-Construction

Maintenance Plan) will be taken over by Russ Braybrooks, USPS.

Responsible Staff:

ACC

Vegetated Swale

BMP Description: The vegetated swale as described in Section 2, Part 2.3 will remain as a

permanent stormwater management structure for the site. The swale will convey runoff to an

overflow inlet in the northwest corner of the site.

Installation Schedule:

Maintenance and

Inspection:

Responsible Staff:

Infiltration Trench

The vegetated swale will be installed before site grading begins.

See Section 2, Part 2.3 for maintenance and inspection procedures

for the vegetated swale. Following completion of site construction

and final stabilization, maintenance and inspection

responsibilities (see Appendix L – Post-Construction

Maintenance Plan) will be taken over by Russ Braybrooks, USPS.

ACC

BMP Description: An infiltration trench without a stormwater outlet will be installed in the

north parking area to control stormwater runoff from that parking area. The infiltration trench

will consist of an excavated, shallow trench backfilled with sand, coarse stone, and pea gravel,

and lined with a filter fabric. The trench will be 65 feet long, 5 feet wide, and have a depth of 3

feet. Design specifications are omitted from this example SWPPP.

Installation Schedule:

Maintenance and

Inspection:

The infiltration trench will be installed during the final

stabilization phase of construction.

The trench will be inspected weekly and after major storm events

during construction. The area will be checked for signs of erosion,

seepage, and structural damage. Erosion, seepage, and structural

damage will be repaired immediately. Following completion of

site construction and final stabilization, maintenance and

ACC

Stormwater Pollution Prevention Plan (SWPPP)

Stormville Postal and Distribution Center

inspection responsibilities (see Appendix L – Post-Construction

Maintenance Plan) will be taken over by Russ Braybrooks, USPS.

ACC

Responsible Staff:

Porous Pavers

BMP Description: Interlocking concrete paving blocks will installed in the north and south

overflow parking areas as detailed on the post-construction site map. The voids in the concrete

paving blocks will be filled with soil and seeded to allow vegetation to grow. Design

specifications are omitted from this example SWPPP.

Installation Schedule:

The infiltration trench will be installed during the final

stabilization phase of construction.

Maintenance and

Inspection:

The porous paver’s area will be inspected weekly and after major

storm events during construction. Any structural damage found

during the inspection will be repaired immediately. After

installation of the porous pavers, the plant material will be

watered for 14 consecutive days unless there is sufficient natural

rainfall. The area will be monitored until vegetation is

established. Following completion of site construction and final

stabilization, maintenance and inspection responsibilities (see

Appendix L – Post-Construction Maintenance Plan) will be taken

over by Russ Braybrooks, USPS.

Responsible Staff:

ACC

Tree Box Filter

BMP Description: Tree box filters will installed at the site, as detailed on the site map, to control

runoff from portions of the parking area. Runoff will be directed to the tree box, where it will be

cleaned by vegetation and soil before infiltrating into the surrounding soil. The filters will consist

of a container filled with a soil mixture, mulch layer, perforated under-drain system and

vegetation. The filters will be designed and installed according to the manufacturer’s

specifications. Design specifications are omitted from this example SWPPP.

Installation Schedule:

The tree box filters will be installed during the final stabilization

phase of construction.

Maintenance and

Inspection:

Immediately after installation of the tree box filters, the plant

material will be watered for 14 consecutive days unless there is

sufficient natural rainfall. Following completion of site

construction and final stabilization, maintenance and inspection

responsibilities (see Appendix L – Post-Construction

Maintenance Plan) will be taken over by Russ Braybrooks, USPS.

Responsible Staff:

ACC

Stormwater Pollution Prevention Plan (SWPPP)

Stormville Postal and Distribution Center

SECTION 5: INSPECTIONS

5.1 Inspections

Instructions:

― Identify the individual(s) responsible for conducting inspections and describe their qualifications. Reference

or attach the inspection form that will be used.

― Describe the frequency that inspections will occur at your site including any correlations to storm frequency

and intensity.

― Note that inspection details for particular BMPs should be included in Sections 2 and 3.

― You should also document the repairs and maintenance that you undertake as a result of your inspections.

These actions can be documented in the corrective action log described in Part 5.3 below.

― For more on this topic, see SWPPP Guide, Chapters 6 and 8 and EPA’s CGP Part 3, Subparts 3.6.A, 3.10

and 3.11.C.

― Also, see suggested inspection form in Appendix B of the SWPPP Guide.

1. Inspection Personnel: Identify the person(s) who will be responsible for conducting

inspections and describe their qualifications:

• Ms. Martina Davis is the stormwater compliance officer for ACC and is responsible for

site compliance with the SWPPP and EPA’s Construction General Permit. Ms. Davis will

conduct inspections for all areas of the site disturbed by construction activities, areas used

for storage of materials that are exposed to precipitation, discharge points, and

construction exits.

In absence of Ms. Davis, Mark Smith, Associate Compliance Officer for ACC, will

conduct inspections.

• Qualifications:

Martina Davis

1. Ms. Davis has 15 years of experience complying with stormwater regulations and has

developed construction SWPPPs for more than 40 different construction projects and

conducted inspections for those projects.

2. Received certification as a Certified Professional in Erosion and Sediment Control

(CPESC) in August 2000 (see Appendix L).

3. Completed the IECA training course The Best of BMPs: Application, Implementation,

and Maintenance in Reno, Nevada, July 2004 (see Appendix L).

4. Completed the University of New Hampshire Stormwater Center: Stormwater

Concepts, Regulatory Concepts, Hydrology and Design training course in Concord,

New Hampshire, September 2005.

ACC

Stormwater Pollution Prevention Plan (SWPPP)

Stormville Postal and Distribution Center

Mark Smith

1. Mr. Smith has developed construction SWPPPs for 10 different construction projects

and conducted inspections for those construction projects.

2. He received certification as a Certified Professional in Erosion and Sediment Control

(CPESC) in May 2003.

2. Inspection Schedule and Procedures:

Describe the inspection schedules and procedures you have developed for your site (include

frequency of inspections for each BMP or group of BMPs, indicate when you will inspect, e.g.,

before/during/and after rain events, spot inspections):

• Inspections of the site will be performed once every 7 days and within 24 hours of the

end of a storm event of one-half inch or greater. The inspections will verify that all BMPs

required in Sections 2 and 3 are implemented, maintained, and effectively minimizing

erosion and preventing stormwater contamination from construction materials. For

detailed inspection procedures, see Sections 2 and 3.

• All inspections will be coordinated with an inspector from the USPS. A USPS inspector

will accompany Ms. Davis, when possible, during inspections.

Describe the general procedures for correcting problems when they are identified. Include

responsible staff and time frames for making corrections.

If corrective actions are identified by Ms. Davis during the inspection, she will notify and

submit a copy of the inspection report to the project managers, Bill Rustler and Russ

Braybrooks. For corrective actions identified, Mr. Rustler will be responsible for initiating the

corrective action within 24 hours of the report and completing maintenance as soon as possible

or before the next storm event. For any corrective actions requiring a SWPPP amendment or

change to a stormwater conveyance or control design, Mr. Rustler will notify Russ Braybrooks,

as soon as possible, before initiating the corrective action.

Attach a copy of the inspection report you will use for your site:

For a copy of the inspection report, see Appendix E.

ACC

Stormwater Pollution Prevention Plan (SWPPP)

Stormville Postal and Distribution Center

5.2 Delegation of Authority

Instructions:

― Identify the individual(s) or specifically describe the position where the construction site operator has

delegated authority for the purposes of signing inspection reports, certifications, or other information.

― Attach a copy of the signed delegation of authority form that will be used.

― For more on this topic, see SWPPP Guide, Chapter 7 and Appendix G, Subsection 11 of EPA’s CGP.

Duly Authorized Representative(s) or Position(s):

Advanced Construction Contractors

Ms. Martina Davis

Compliance/Inspection Officer

5800 Washington Avenue

Nashua, NH 03064

Office Phone: (603) 444-3210

Office Fax: (603) 444-3211

See Appendix K – Delegation of Authority

5.3 Corrective Action Log

Instructions:

― Create here, or as an attachment, a corrective action log. This log should describe repair, replacement,

and maintenance of BMPs undertaken as a result of the inspections and maintenance procedures

described above. Actions related to the findings of inspections should reference the specific inspection

report.

― This log should describe actions taken, date completed, and note the person that completed the work.

Corrective Action Log:

See Appendix F – Corrective Action Log

ACC

Stormwater Pollution Prevention Plan (SWPPP)

Stormville Postal and Distribution Center

SECTION 6: RECORDKEEPING AND TRAINING

6.1 Recordkeeping

Instructions:

― The following is a list of records you should keep at your project site available for inspectors to review:

― Dates of grading, construction activity, and stabilization (which is covered in Sections 2 and 3)

― A copy of the construction general permit (attach)

― The signed and certified NOI form or permit application form (attach)

― A copy of the letter from EPA or/the state notifying you of their receipt of your complete NOI/application

(attach)

― Inspection reports (attach)

― Records relating to endangered species and historic preservation (attach)

― Check your permit for additional details

― For more on this subject, see SWPPP Guide, Chapter 6.C and EPA’s CGP Part 3, Subparts 3.4.C, 3.8,

3.10.G and 3.12.A.

Records will be retained for a minimum period of at least 3 years after the permit is terminated.

Date(s) when major grading activities occur:

See Appendix I – Grading and Stabilization Activities Log

Date(s) when construction activities temporarily or permanently cease on a portion of the site:

See Appendix I – Grading and Stabilization Activities Log

Date(s) when an area is either temporarily or permanently stabilized:

See Appendix I – Grading and Stabilization Activities Log

6.2 Log of Changes to the SWPPP

Instructions:

― Create a log here, or as an attachment, of changes and updates to the SWPPP. You should include

additions of new BMPs, replacement of failed BMPs, significant changes in the activities or their tim

ing on

the project, changes in personnel, changes in inspection and maintenance procedures, updates to site

maps, and so on.

Log of changes and updates to the SWPPP

See Appendix G – SWPPP Amendment Log

ACC

Stormwater Pollution Prevention Plan (SWPPP)

Stormville Postal and Distribution Center

6.3 Training

Instructions:

― Training your staff and subcontractors is an effective BMP. As with the other steps you take to prevent

stormwater problems at your site, you should document the training that you conduct for your staff, for

those with specific stormwater responsibilities (e.g. installing, inspecting, and maintaining BMPs), and for

subcontractors.

― Include dates, number of attendees, subjects covered, and length of training.

― For more on this subject, see SWPPP Guide, Chapter 8.

Individual(s) Responsible for Training:

Ms. Dorothy Williams

Describe Training Conducted:

• General stormwater and BMP awareness training for staff and subcontractors:

Ms. Davis will conduct informal training for all staff, including subcontractors, on the

site. The training will be conducted primarily via tailgate sessions and will focus on

avoiding damage to stormwater BMPs and preventing illicit discharges. The tailgate

sessions will be conducted biweekly and will address the following topics: Erosion

Control BMPs, Sediment Control BMPs, Non-Stormwater BMPs, Waste Management

and Materials Storage BMPs, and Emergency Procedures specific to the construction site.

(See Appendix J – SWPPP Training Log)

• Detailed training for staff and subcontractors with specific stormwater responsibilities:

Ms. Davis will provide formal training to all staff and subcontractors with specific

stormwater responsibilities, such as installing and maintaining BMPs. The formal training

will cover all design and construction specifications for installing the BMPs and proper

procedures for maintaining each BMP. Formal training will occur before any BMPs are

installed on the site. (See Appendix J – SWPPP Training Log)

ACC

Stormwater Pollution Prevention Plan (SWPPP)

Stormville Postal and Distribution Center

SECTION 7: FINAL STABILIZATION

Instructions:

― Describe procedures for final stabilization. If you complete major construction activities on part of your site,

you can document your final stabilization efforts for that portion of the site. Many permits will allow you to

then discontinue inspection activities in these areas (be sure to check your permit for exact requirements).

You can amend or add to this section as areas of your project are finally stabilized.

― Update your site plans to indicate areas that have achieved final stabilization.

― For more on this topic, see SWPPP Guide, Chapter 9 and EPA’s CGP Part 3, Subparts 3.11 and 3.13.D,

and Part 5, Subpart 5.1.

Permanent Seeding

BMP Description: Permanent seeding will be applied immediately after the final design grades

are achieved on portions of the site but no later than 14 days after construction activities have

permanently ceased. After the entire site is stabilized, any sediment that has accumulated will be

removed and hauled off-site for disposal at Middletown Landfill. Construction debris, trash and

temporary BMPs (including silt fences, material storage areas, sanitary toilets, and inlet

protection) will also be removed and any areas disturbed during removal will be seeded

immediately.

Seedbed Preparation

a. In areas where disturbance results in subsoil being the final grade surface, topsoil

will be spread over the finished area at minimum depth of 2 to 6 inches.

b. The seedbed will be free of large clods, rocks, woody debris and other

objectionable materials.

c. Fertilizer and lime will be applied to the seedbed according to the manufacturer’s

recommendations or soil tests (soil tests are omitted from this example SWPPP).

d. The top layer of soil will be loosened to a depth of 3–5 inches by raking, tilling,

disking or other suitable means.

Grass Selection/Application

a. Common areas at the site will be stabilized with a mixture of Tall Fescue,

Creeping Red Fescue and Redtop at an application rate of 30 pounds per acre or

0.95 pounds per 1,000 square feet. Lawns will be stabilized with a mixture of

Kentucky Blue Grass and Creeping Red Fescue at an application rate of 100

pounds per acre or 2.3 pounds per 1,000 square feet.

b. Seed will be applied uniformly by hydroseeding or broadcasting. Where

broadcasting is used, the seed will be covered with .25 inch of soil or less, by

cultipacking or raking.

ACC

Stormwater Pollution Prevention Plan (SWPPP)

Stormville Postal and Distribution Center

Mulching

a. Hydromulch will be applied immediately following seeding at an application rate

of 90–100 pounds (2–3 bales) per 1,000 square feet.

Installation Schedule:

Portions of the site where construction activities have

permanently ceased will be stabilized, as soon as possible but no

later than 14 days after construction ceases.

Maintenance and

Inspection:

All seeded areas will be inspected weekly during construction

activities for failure and after storm events until a dense cover of

vegetation has been established. If failure is noticed at the seeded

area, the area will be reseeded, fertilized, and mulched

immediately. After construction is completed at the site,

permanently stabilized areas will be monitored until final

stabilization is reached.

Responsible Staff:

ACC

Stormwater Pollution Prevention Plan (SWPPP)

Stormville Postal and Distribution Center

SWPPP APPENDICES

Attach the following documentation to the SWPPP:

Appendix A – General Location Map

Appendix B – Site Maps

Appendix C –Construction General Permit

Appendix D – NOI and Permit Authorization Letter from

EPA/State, Alteration of Terrain Application, and

Storm Water Permit Basics: New Hampshire

Digging Needs a Federal Permit Fact Sheet

Appendix E – Inspection Reports

Appendix F – Corrective Action Log

Appendix G – SWPPP Amendment Log

Appendix H – Subcontractor Certifications/Agreements

Appendix I – Grading and Stabilization Activities Log

Appendix J – Training Log

Appendix K – Delegation of Authority

Appendix L – Additional Information

ACC