HomeMy WebLinkAbout2015-07-28 SWPP REV 9/10/2016 Stormwater Pollution Prevention Plan (SWPPP)
West Mill Redevelopment
Stormwater Pollution Prevention Plan (SWPPP)
For Construction Activities At:
West Mill Redevelopment
High Street
North Andover,MA 01845
SWPPP Prepared For:
RCG LLC
17 Ivaloo Street Suite 100
Somerville, MA 02143
617-625-8315 (office)
617-625-8345 (f)
SWPPP Prepared By:
Horsley Witten Group, Inc.
90 Route 6a
Sandwich, MA 02563
508-833-6600
SWPPP Preparation Date:
08/27/2015
Revised 09/10/2015
Estimated Project Dates:
Project Start Date: 09/15/2015
Project Completion Date: 09/2016
Stormwater Pollution Prevention Plan (SWPPP)
West Mill Redevelopment
Contents
SECTION 1: CONTACT INFORMATION/RESPONSIBLE PARTIES ...................................................................1
1.1 Operator(s) /Subcontractor(s).............................................................................................
1.2 Stormwater Team............................................................................................................................. 2
SECTION 2: SITE EVALUATION,ASSESSMENT, AND PLANNING..................................................................2
2.1 Project/Site Information.................................................................................................................. 2
2.2 Discharge Information..................................................................................................................... 3
2.3 Nature of the Construction Activity..............................................................................................5
2.4 Sequence and Estimated Dates of Construction Activities...................................................... 6
2.5 Allowable Non-Stormwater Discharges .......................................................................................8
2.6 Site Maps...........................................................................................................................................9
3.1 Endangered Species Protection ...................................................................................................9
3.2 Historic Preservation.........................................................................................................................9
3.3 Safe Drinking Water Act Underground Injection Control Requirements.................................9
SECTION 4: EROSION AND SEDIMENT CONTROLS......................................................................................9
4.1 Natural Buffers or Equivalent Sediment Controls...................................................................... 10
4.2 Perimeter Controls ......................................................................................................................... 10
4.3 Sediment Track-Out....................................................................................................................... 11
4.4 Stockpiled Sediment,Soil, or Topsoil........................................................................................... 12
4.5 Minimize Dust.................................................................................................................................. 12
4.6 Minimize the Disturbance of Steep Slopes................................................................................. 13
4.7 Soil Compaction ............................................................................................................................ 14
4.8 Storm Drain Inlets............................................................................................................................ 14
4.9 Dewatering Practices.................................................................................................................... 15
4.10 Other Stormwater Controls........................................................................................................... 16
SECTION 5: POLLUTION PREVENTION STANDARDS...................................................................................17
5.1 Potential Sources of Pollution....................................................................................................... 17
5.2 Spill Prevention and Response.....................................................................................................20
5.3 Fueling and Maintenance of Equipment or Vehicles..............................................................21
5.4 Washing of Equipment and Vehicles ..........................................................
5.5 Storage, Handling, and Disposal of Construction Products, Materials, and Wastes...........21
5.6 Washing of Applicators and Containers used for Paint, Concrete or Other Materials......24
SECTION 6: INSPECTION AND CORRECTIVE ACTION...............................................................................24
6.1 Inspection Personnel and Procedures........................................................................................ 24
6.2 Corrective Action ..........................................................................................................................25
6.3 SWPPP Modifications..................................................................................................................... 25
6.4 Reporting.........................................................................................................................................25
6.5 Additional Reporting....................................................................... ...26
...........................................
6.4 Record Keeping.............................................................................................................................27
6.7 Delegation of Authority ................................................................................................................28
SECTION 7: TRAINING................................................................................................................................27
SECTION 8: CERTIFICATION AND NOTIFICATION.....................................................................................30
SWPPPAPPENDICES...................................................................................................................................32
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Stormwater Pollution Prevention Plan (SWPPP)
West Mill Redevelopment
SECTION 1: CONTACT INFORMATION/RESPONSIBLE PARTIES
1,1 Operator(s) /Subcontractor(s)
The General Contractor shall have primary responsibility for compliance with all applicable
requirements, including the implementation and maintenance of the SWPPP and the
preparation of any modifications of the SWPPP. The General Contractor shall also be responsible
for all notifications, reporting, and record keeping, as well as for the installation and
maintenance of all soil erosion and sediment control practices. The General Contractor shall
certify the SWPPP.
The General Contractor shall maintain the official working document SWPPP at the construction
site. The Construction Plans prepared by Horsley Witten Group, Inc. (the Engineer) constitute
part of this SWPPP, and the General Contractor shall maintain a complete set of the current
version of the Construction Plans at the site. The General Contractor also shall maintain a
complete copy of the current version of all applicable regulatory requirements and technical
standards at the site. The General Contractor shall file copies of all construction activity records,
inspection reports, and noncompliance reports (see Section 6.0 of this SWPPP) found in the
Appendices. The General Contractor shall provide copies of all noncompliance reports to the
Owner and the Engineer for information. Responsible regulatory agencies, including the USEPA,
the Massachusetts Department of Environmental Protection (DEP), and RCG LLC, shall be
provided access to the SWPPP at the site. In addition, the General Contractor shall post a sign
near the main entrance of the site that includes a copy of the completed Notice of Intent and
the location of the SWPPP.
The installation and maintenance of specific stormwater pollution prevention and stormwater
management controls for the project shall be the responsibility of the General Contractor and
subcontractors as identified in Table 1-1. The installation of erosion and sedimentation controls
will be ongoing as the construction schedule progresses, but the timing shall be consistent with
the sequence of activities outlined in Section 2.4 of this SWPPP.
Table 1-1
Operator(s):
RCG LLC
17 Ivaloo Street Suite 100
Somerville, MA 02143
617-625-8315 (office)
617-6 5-83345 (f)
Emergency 24-Hour Contact:
Company or Organization Name: RCG LLC
Name: Erik Giangregorio
"telephone Number: 617.233-7 71
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Storrnwater Pollution Prevention Plan (SWPPP)
West Mill Redevelopment
1.2 Stormwater Team
The stormwater team is comprised of individuals who are responsible for overseeing the
development of the SWPPP, any later modifications to it, and for compliance with the
requirements in this permit (i.e., installing and maintaining stormwater controls, conducting site
inspections, and taking corrective actions where required). Each mernber of the stormwater
team must have ready access to either an electronic or paper copy of applicable portions of
the 2012 CGP and the SWPPP.
Owner: RCG LLC:
Rolle or, Responsibility: Owner/Operator
Insert Position: Development Manager
Insert Name: Seth Zeren
lnserl Telephone Number: 617-625-8315
Insert Email: szeren@rcg-[1c.corn
Contractor:Tocci Building Companies
Role or Responsibility:SWPPP Nrnplernentafion, modifications and compliance
Position: General Superintendent
Name: Robert F,Tierney, Jr.
Telephone Number: 617-719-1848
Email: btierney@@tocci.com
The applicant shall designate a Wetland Scientist (or other environmental professional as
approved by the North Andover Conservation Commission (NACC) or its agent as an"Erosion
Control Monitor'to oversee any emergency placement of controls and regular inspection or
replacement of sedimentation control devices. The name and phone number of the erosion
control monitor must be provided to the NACC in the event that this person has to be
contacted, due to an ernergency at the site, during any 24 hour period, including weekends.
Proof of the retained monitor must be submitted to the Conservation Department on letter head
by the retained consulting firm. This person shall be given the authority to stop construction for
erosion control purposes. The Environmental Professional will immediately notify the
Conservation agent of any matter that requires attention by the Commission or the agent. The
erosion control monitor will be required to inspect all such devices and oversee cleaning and
the proper disposal of waste products. Cleaning shall include removal of any entrapped silt.
SECTION 2: SITE EVALUATION, ASSESSMENT, AND PLANNING
2.1 Project/Site Information
The project construction activity is eligible for permit coverage for stormwater and certain non-
stormwater discharges under the CGP due to the following: (1) this project is not on Tribal lands;
(2) the total land disturbance is greater than one acre; and (3) the project site is not in critical
habitat for endangered or threatened species.
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Stormwater Pollution Prevention Plan (SWPPP)
West Mill Redevelopment
Project Name and Address
Project/Site Name: West Mull
Project Street/Location: 4 Fflgh Street
City: North Andover„ MA
State: Mass<;achusetls
ZIP Code: 01845
County or Similar Subdivision: Essex County
Project Latitude/Longitude
Latitude: Longitude:
3.42.7024° N (decimal) 3.-71.1260°W (decimal)
Method for determining latitude/longitude:
❑ USGS topographic map (specify scale: ) ❑ EPA Web site ❑ GPS
Other (please specify): http://www.latlon.g.net
Horizontal Reference Datum:
❑ NAD 27 E] NAD 83 or WGS 84 ® Unknown
If you used a U.S.G.S topographic map,what was the scale?
Additional Project Information
Is the project/site located on Indian country lands, or located on a property of religious or
cultural significance to an Indian tribe? ❑ Yes ® No
Are you applying for permit coverage as a "federal operator" as defined in Appendix A of
the 2012 CGP? ❑ Yes M No
2.2 Discharge Information
Does your project/site discharge stormwater into a Municipal Separate Storm Sewer System
(MS4)? ❑ Yes M No
Are there any surface waters that are located within 50 feet of your construction disturbances?
® Yes ❑ No
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Table 1 -Names of Receiving Waters
Name(s) of the first surface water that receives stormwater directly from your site and/or from the MS4
(note: multiple rows provided where your site has more than one point of discharge that flows to
different surface waters)
1. Osgood Pond
[Include additional rows as necessary.]
Table 2-Impaired Waters /TMDLs (Answer the following for each surface water listed in Table I above)
If you answered yes,then answer the followin2:
Is this surface Has a TMDL
water listed as What pollutant(s) are causing been Title of the TMDL document Pollutant(s) for which
"impaired"? the Impairment? completed? there is a TMDL
1. —YES -0 No I DYES Z NO I
Describe the method(s) you used to determine whether or not your project/site discharges to an impaired water: Massachusetts State
303(d) List
Table 3-Tier 2,2.5, or 3 Waters (Answer the followiin2 for each surface water listed in Table 1 above)
Is this surface water designated If you answered yes,specify which
as a Tier 2,Tier 2.5, or Tier 3 Tier(2,2.5,or 3) the surface water is
water? designated as?
(see Appendix F)
1. LJ YES N NO
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2.3 Nature of the Construction Activity
The federal Clean Water Act, as amended in 1987, requires a National Pollutant Discharge Elimination
System (NPDES) permit for the discharge of stormwater runoff from construction sites. The United States
Environmental Protection Agency (USEPA) determined that the discharge of stormwater associated with
construction activities could be authorized through a general permit as long as certain standard
conditions are satisfied. The General Permit for Stormwater Discharges from Large and Small Construction
Sites in Massachusetts became effective on July 1, 2003, This Construction General Permit (CGP) requires
construction sites with stormwater discharges authorized by the permit to prepare and implement a
Stormwater Pollution Prevention Plan (SWPPP). A copy of the CGP is included in Appendix B of this SWPPP.
The CGP for activities in the Commonwealth of Massachusetts, Permit No. MAR100000, allows certain
stormwater and non-stormwater discharges from construction sites. According to the Massachusetts
Natural Heritage Atlas the site is not located within Estimated Habitat of Rare Wildlife and Certified Vernal
Pools and/or Priority Habitat of Rare Species.
This project qualifies under the CGP as a large construction site and discharges are authorized until
construction is complete and the site satisfies criteria for final stabilization.
The purpose of this SWPPP is to identify all potential sources of pollution which may reasonably be
expected to affect the quality of stormwater discharges from the construction site;describe practices to
be used to reduce pollutants in stormwater discharges from the construction site; and assure compliance
with the terms and conditions of the CGP. The SWPPP must be implemented from the start of construction
activity and through final stabilization.
General Description of Project
Provide a general description of the construction project:
The project site is located at the West Mill complex at 4 High Street in North Andover,
Massachusetts. West Mill includes three parcels of land, Parcel One (9.57 acres), Parcel Two
(6.80 acres), and Parcel Three (0.30 acres), all located on the west side of High Street. To the
east of the Property is East Mill. Parcel One consists of 422,532 square feet (or 9.57 acres) of land
and is designated on the Town Assessor's Maps as Map 54, Lot 1,
Parcel One includes 4 High Street which is an existing three-story historic building containing
approximately 22,491 square feet (SF) of gross floor area, along with the main mill building,
consisting of 178,130 SF of gross floor area. Parcel One also includes a recently improved
courtyard area with associated parking and landscaping improvements, see civil plan sheet C-
4 for a summary of Parcel One buildings and building numbers. Parcel Two consists of 296,228 SF
(6.80 acres) of land,is located on the northern corner of the West Mill complex, and includes an
existing parking filed, a baseball filed, and adjacent open space. Parcel Three consists of 13,213
SF (0.30 acres) of land, is located on the southerly side of Water Street, and is currently serving as
a parking lot.
For the purposes of this Application, the project site is defined solely as the area delineated by
the Limit of Work as indicated on the Permitting Plan set.
The proposed project will involve the demolition of a portion of the existing building, construction
of parking lots,sidewalks, drive aisles, and incorporation of stormwater best management
practices. The total proposed impervious area (including both the building and paved surfaces)
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Stormwater Pollution Prevention Plan (SWPPP)
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will be decreased from the existing conditions.
Size of Construction Project
What is the size of the property (in acres), the total area expected to be disturbed by the
construction activities (in acres), and the maximum area expected to be disturbed at any one
time?
PROPERTY AREA;±9.6 acre
TOTAL AREA OF CONSTRUCTION DISTURBANCES:±2.9 acres
MAXIMUM AREA TO BE DISTURBED AT ANY ONE TIME:±2.9 acres
Construction Activities
The Construction Plans identify the drainage patterns and approximate slopes anticipated before and
after major grading activities; areas of soil disturbance; areas that will not be disturbed; locations where
storrnwater will discharge; and locations of major structural and nonstructural controls identified in this
SWPPP.
Construction activities will involve erosion and sediment control, site preparation, building demolition,
earthwork, and stormwater management and paving necessary for construction for the proposed
redevelopment.
Erosion and sediment control measures will be installed prior to commencement of any soil disturbing
activities and will remain in place until final site stabilization is complete. Topsoil,which must be
excavated for site development,will be separated from the remaining soil and stockpiled on-site for use
during site landscaping. The stockpiled topsoil will be protected to prevent erosion and sedimentation.
2.4 Sequence and Estimated Dates of Construction Activities
Project is currently scheduled to begin construction in September 2015. On-site construction is expected
to be completed by fall of 2016. The Construction Plan Set include detailed notes,specifications, and
sequencing for proposed construction of the site. Erosion and Sediment Control measures can also be
found in the Construction Plans. A construction schedule has not yet been developed but will be
provided by the contractor to the owner for review of compliance with the SWPPP requirements. The
following construction sequence is to be used as a general guideline. Coordination with the owner,
engineers, town and contractor along with final construction sequencing review and approval is required
prior to construction.
1. Survey and stake the proposed limit of disturbance and limit of sedimentation barriers,
2, Place perimeter sedimentation barriers as indicated on drawings and staked out in the field. Under
no circumstances is the limit of work to extend beyond the sedimentation barriers/limit of
disturbance as indicated on drawings as approved by the Town of North Andover Conservation
Commission.
1 Install drainage inlet protection devices as indicated on drawings.
4. Ensure the boundary of the wetland at Osgood Pond is marked by wooden stakes or flagging per
Conservation Commission requirements.
5. Install temporary construction entrances in locations indicated on drawings. The existing site
entrance wili also be used when necessary, Thus existing entr(.-In e will be swept daily or on an as-
needed basis. No other entrances are to be used to gain access to the site by any construction or
delivery vehicles.
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6. Locate construction staging area at a minimum of 100' from the resource area (Osgood Pond
and associated wetlands)
7. Begin clearing and grubbing the landscape areas to be disturbed. Topsoil is to be stripped from
the areas and stockpiled in approved locations. Topsoil stockpiles must be protected by a
sediment barrier.
8. Begin demolition of the existing building including roof, #made and framing (sf).
9. Remove construction debris to an approved off-site facility.
10. Demo the building slab and foundation as indicated on the Drawings.
11. Remove concrete debris to an approved off-site facility.
12. Coordinate soil evaluation, grading, and restoration of the Building 37 demo area with Engineer to
verify grading and drainage requirements.
13. Fill and rough grade the remaining building foundation and slab in the area of the proposed
parking lot.
14. Survey and stake centerline of the proposed roads, underground recharge chambers, stormwater
management areas, structures, and drain lines.
15, Excavate and rough grade the proposed stormwater management areas and any additional
temporary basins necessary to control site runoff and sediments. Proposed rough graded
stormwater management areas may be used for temporary stormwater management. Grade the
stormwater management areas to within one foot of design elevations to protect future infiltration
capacity of facilities and do not place filter media.
16. Construct temporary sedimentation basins as needed during construction to aid in the capture of
stormwater runoff. Engineer to review location and sizing prior to installation
17. Install temporary conveyance device (swales, check dams, pipes, etc.), as necessary, to convey
runoff to treatment areas. Locations and sizing to be field determined and verified by the
Engineer.
18. Install erosion and sediment control devices at surface stormwater management areas.
19. Begin preliminary grading for roads and parking. Bring rough grading to proper elevations as soon
as practicable. Coordinate work to minimize time soils are un-stabilized.
20. Install drainage pipes, drainage manholes, catch basins, tree filter pits and underground drainage
structures. Begin work at the drainage basins and progress up-gradient. Protect discharge outlets
with rip-rap aprons. The stormwater management areas and drainage network are to be
protected from sedimentation with silt fence and temporary inlet protection until all un-stabilized
areas are stabilized with stone sub-base or vegetation.
21. Install all remaining erosion and sediment control devices to protect installed structures and
stormwater management areas. Install sediment barriers at all points of entry into the drainage
network. Take particular care to protect the underground drainage basins from sediment.
22. Begin underground utility construction. The contractor is free to install the utilities in the sequence
he/she chooses. Immediately repair, replace and stabilize any erosion control devices disturbed
during the underground utility construction. Modify temporary conveyance devices, as necessary,
to convey runoff to treatment areas.
23. Install of curbing.
24. Upon completion of underground utilities, drainage and curbing installation, place compacted
road base and rough grade the roadways/parking areas in accordance with the site plans and in
accordance with applicable state and local regulations as soon as possible.
25. Begin road and parking construction per site plans and in accordance with applicable state and
local regulations. Roads and parking areas are not to be paved until the entire permanent
drainage system has been installed and all pipe connections complete.
26. Remove all accumulated sediments in the temporary stormwater management areas.
27. Complete stormwater management areas, fine grading and installation of filter media and
sediment forebays.
28. Install binder course.
29. Install sidewalks and pavers.
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Stormwater Pollution Prevention Plan (SWPPP)
West Mill Redevelopment
30. Finish permanent stabilization of all disturbed areas.
31. Complete all remaining planting and seeding.
32. Sweep the roadway to remove all sediments.
33. Repair drainage outlets and basins as required. Clean and flush the drainage structures and pipes
at the end of construction. Contractor must inspect the drainage network and repair any
damage immediately.
34. Installation of pavement top course.
35. Final site stabilization.
36. Engineer to approve the removal of all temporary soil erosion and sedimentation control measures
following vegetative establishment of all disturbed areas and determine when the contributing
area has reached a minimum of 80%stabilization.
37. Final cleanup.
38. File of Notice of Termination (NOT).
39. Records retention for 3 years after filing NOT.
2.5 Allowable Non-Stormwater Discharges
The CGP allows certain non-stormwater discharges if they are identified in the SWPPP and if the SWPPP
ensures the implementation of appropriate pollution prevention measures for the non-stormwater
components of the discharge. The following allowable non-stormwater discharges may occur from the
site during the construction period:
List of Allowable Non-Stormwater Discharges Present at the Site
Type of Allowable Non-Stormwater Discharge Likely to be Present at
Your Site?
Discharges from emer enc fire-fighting activities ❑ YES ® NO
Fire h drani flushin s ❑ YES ® NO
Landscape irrigation ®YES ❑ NO
Waters used to wash vehicles and equipment ❑YES ® NO
Water used to control dust ® YES ❑ NO
Potable water including uncontaminated water line flushin s ❑ YES ® NO
Routine external building wash down ❑ YES ® NO
Pavement wash waters ❑ YES ® NO
Uncontaminated air conditioning or compressor condensate ❑YES ® NO
Uncontaminated, non-turbid discharges of ground water ors ring water ❑ YES ® NO
Foundation or footing drains ❑ YES N-NO
Construction dewatering water ® YES ❑ NO
■ Water sprays and irrigation sprinklers shall be utilized to minimize the volume of runoff from dust
control and vegetation watering.
■ Potable waterline flushings shall be directed into the stormwater conveyance system. Flows are
only to be directed into the vegetated stormwater systems if adequate vegetative cover has
been established and/or other provisions are taken to prevent erosion of the conveyance system.
Care shall be taken to prevent high hose discharges from eroding stormwater management
areas.
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Stormwater Pollution Prevention Plan (SWPPP)
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Groundwater or stormwater pumped from excavations that contain silt or sediment shall be
directed to a silt fence or straw bale diked area for settling prior to flowing into any infiltration
system.
■ No wash water containing chemicals shall be discharged onsite.
2.6 Site Maps
Site maps are located in Appendix A
SECTION 3: DOCUMENTATION OF COMPLIANCE WITH OTHER FEDERAL REQUIREMENTS
3.1 Endangered Species Protection
Eligibility Criterion
Under which criterion listed in Appendix D of the 2012 GCP are you eligible for coverage under
this permit?
® A ❑ B ❑ C r] D ❑ E
Supporting Documentation
Provide documentation for the applicable eligibility criterion you select in Appendix D of the
2012 GCP, as follows:
For criterion A, indicate the basis for your determination that no federally-listed threatened or
endangered species or their designated critical habitats) are likely to occur in your site's action
area (as defined in Appendix A of the GCP). Check the applicable source of information you
relied upon:
❑ Specific communication with staff of the U.S. Fish & Wildlife Service or National Marine
Fisheries Service.
❑ Publicly available species list.
® Other source: MassG4S
3.2 Historic Preservation
Not Applicable
3.3 Safe Drinking Water Act Underground Injection Control Requirements
Not Applicable
III
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SECTION 4: EROSION AND SEDIMENT CONTROLS
j The following are pollution control measures that will be implemented as part of the construction activity.
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Stormwater Pollution Prevention Plan (SWPPP)
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4.1 Natural Buffers or Equivalent Sediment Controls
Buffer Compliance Alternatives
Are there any surface waters within 50 feet of your project's earth disturbances? ®YES ❑ NO
Check the compliance alternative that you have chosen:
® This project qualifies for one of the exceptions in Part 2.1.2.1.e. (if you have checked this box,
provide information on the applicable buffer exception that applies, below.)
Buffer Exceptions
Which of the following exceptions to the buffer requirements applies to your site?
® No natural buffer exists due to preexisting development disturbances that occurred prior to the
initiation of planning for this project.
4.2 Perimeter Controls
General
■ Silt Ponce, strawbales and/or Sediment Silt Sock Barrier, as indicated in the Drawings will be
installed prior to commencement of construction. This type of practice creates erosion control
barriers to intercept sediment in diffuse runoff.
■ The Construction Plans describe the appropriate control measures that shall be implemented as
part of the construction activity to control pollutants in stormwater discharges from this site. The
following are all pollution control measures that will be implemented as part of the construction
activity. The Town Conservation Agent will be informed upon completion so that they may
inspect these barriers prior to construction.
Specific Perimeter Controls
Sift Sock or Silt Fence with Straw Bales
■ Silt Sock is a barrier used to intercept sediment and diffuse runoff.
• Notify the Town upon completion so that they may inspect these barriers prior to construction.
Installation
■ Install prior to the start of construction.
■ Install barriers parallel to land slope at the perimeter of the work site. Install as indicated in the
details on the Drawings.
Maintenance Requirements
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■ At a minimum, CGP PART 2.1.2.2.b requires removal of sediment"before it has accumulated to
one-half of the above-ground height of any perimeter control."
■ Inspect silt fences regularly for depth of sediment, tears, to determine if the fabric is securely
attached to the fence posts, and to determine if the fence posts are firmly in the ground. Silt
fence will be replaced when necessary.
■ The applicant shall have on hand at the start of any soil disturbance, removal or stockpiling 100
feet of silt fence or an equivalent length of 12"silt sock and sufficient stakes for staking these bales.
Said bales/fence shall be used only for the control of emergency erosion problems and shall not
be used for the normal control of erosion.
• Install barriers parallel to land slope at the perimeter of the work site. Install as indicated in the
details on the Drawings.
• Replace and/or repair portions of the erosion control barriers as necessary to prevent erosion and
sediment transport.
• Inspect silt socks regularly for depth of sediment and any breaches will promptly be repaired or
replaced when necessary.
4.3 Sediment Track-Out
General
The following are pollution control measures that will be implemented as part of the construction activity.
As described in CGP Part 2.1.2.3, measures will be taken to minimize the track-out of sediment onto off-site
streets, other paved areas,and sidewalks from vehicles exiting the construction. Vehicles enter and exit
the site as indicated on the Drawings.
Specific Track-Out Controls
Off-Site Construction Vehicle Mud Tracking
• Associated pavement and roadways shall be swept at least weekly or as directed by the Erosion
Control Monitor, the Site Supervisor, Project Manager, or Conservation staff or as long as the site
remains exposed and unstabilized. If material is tracked beyond the construction entrance on to
the adjacent roadway, it will be swept up daily.
• Trucks hauling material, to or from the construction site, will be covered with a tarpaulin, as
necessary
Stone Construction Entrances
■ Crushed stone aggregate will be placed at the site entrance/exits to remove any excess sediment
or debris from truck tires. The exist g site enhance will also 1>e Used v,rhE,''r i n(.;,cMessary. This existing
sile entrance will be SWEm pt daily or.on are as-needed bask,
• Install as indicated on the Drawings
Installation
■ Install prior to the start of construction.
Maintenance Requirements
• Where sediment has been tracked-out from your site onto the surface of off-site streets, other
paved areas, and sidewalks,you must remove the deposited sediment by the end of the same
work day in which the track-out occurs or by the end of the next work day it track-out occurs on a
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Stormwater Pollution Prevention Plan (SWPPP)
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non-work day. You must remove the track-out by sweeping, shoveling, or vacuuming these
surfaces, or by using other similarly effective means of sediment removal. You are prohibited from
hosing or sweeping tracked-out sediment into any stormwater conveyance (unless it is connected
to a sediment basin,sediment trap, or similarly effective control), storm drain inlet, or surface
water.
■ Clean/replace the stone construction entrances as necessary to ensure proper function.
4.4 Stockpiled Sediment, Soil, or Topsoil
General
■ Place stockpiles on level,stable surfaces.
■ Divert flows from stockpiled sediment or soil, retain or detain flows, or otherwise limit exposure and
the discharge of pollutants from stockpiled sediment or soil.
■ Surround the perimeter of soil stockpiles with silt fence or silt sock.
■ Provide appropriate temporary stabilization of any stockpile which activity has ceased and which
will remain exposed for more than 60 days. If necessary, cover soil stockpiles to prevent erosion
and sedimentation
■ Do not exceed 35 feet height for stockpile(s) and waste pile(s). Slope stockpile(s) sides at 2: 1 or
flatter.
■ Topsoil,which must be excavated for site development,will be separated from the remaining soil
and stockpiled on-site for use during site landscaping.
■ Surround the perimeter stockpiled topsoil with silt fence or silt sock to prevent erosion and
sedimentation.
■ Temporarily seed or cover topsoil stockpiles which will remain exposed for more than 14 days to
prevent erosion.
■ Install the necessary erosion controls during the creation of stockpiles and replace as necessary
during removal operations.
■ There shall be no stockpiling of soil or other materials within 50 feet of any resource area. Stock
piled materials shall be maintained within erosion controls.
Specific Stockpile Controls
General
See 4.2 Perimeter Controls and 4.6 Minimize the Disturbance of Steep Slopes
Maintenance Requirements
■ At a minimum, comply with following requirement in CGP Part 2.1.2.4.d: Do not hose down or
sweep soil or sediment accumulated on pavement or other impervious surfaces into any
stormwater conveyance (unless connected to a sediment basin, sediment trap, or similarly
effective control), storm drain inlet, or surface wafer.
4.5 Minimize Dust
General
E As described in CGP Part 2.1.2.5, measures will be taken to minimize the generation of dust
through the appropriate application of water or other dust suppression techniques in order to
minimize pollutants being discharged into surface waters.
Specific Dust Controls
Dust Su cession
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Stormwater Pollution Prevention Plan (SWPPP)
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■ A water truck with low pressure spray shall be used to control dust during extended dry periods.
Maintenance Requirements
■ Maintain proper operation of water vehicles
4.6 Minimize the Disturbance of Steep Slopes
General
■ The following are all pollution control measures that will be implemented as part of the
construction activity. As described in CGP Part 2.1.2.6, measures will be taken to minimize the
disturbance of steep slopes through voidance of disturbing areas with slopes of greater than 4:1
and,when necessary, the implementation of standard erosion and sediment control practices.
■ No re-grading in the buffer zone shall have a slope steeper than 2:1 (horizontal : vertical).
Specific Steep Slope Controls
Erosion Control Blankets
■ An erosion control blanket is a preformed protective blanket of plastic fibers, straw or other plant
residue designed to protect soil from the impact of precipitation and overland flow, and retain
moisture to facilitate establishment of vegetation.
■ Install erosion control blankets on all disturbed slopes 3:1 or greater as indicated on the Drawings.
Installation
■ Install upon completion of construction activities for permanent stabilization within the area of the
disturbed slopes and placement of top soil.
■ Install per manufacturer's requirements.
Maintenance Requirements
■ Immediately repair any slope wash out or failures.
■ Water areas which have been seeded as necessary to provide proper grass establishment.
Bonded Fiber Matrix
■ Bonded fiber matrix can be used in place of erosion control blankets on all disturbed slopes 3:1 or
greater.
■ Bonded Fiber Matrix consists of hydraulically applied products which are designed, tested and
proven to match or exceed the performance of erosion control blankets. A bonded fiber matrix is
a continuous layer of elongated fiber strands held together by a water-resistant bonding agent. It
eliminates direct rain drop impact on soil (it has no holes greater than one millimeter in size), it
allows no gaps between the product and the soil and it has a high water-holding capacity.
■ Install per manufacturer's requirements.
Installation
■ Install upon completion of construction activities within the area of the disturbed slopes and
placement of fop soil.
Maintenance Requirements
■ Immediately repair any slope wash out or failures.
■ Water areas which have been seeded as necessary to provide proper grass establishment.
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Stormwater Pollution Prevention Plan (SWPPP)
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4.7 Soil Compaction
General
■ In areas of the site where final vegetative stabilization will occur, compaction will be minimized by
the restriction of heavy vehicles and equipment. Areas of soil that may become compacted
during construction will be conditioned to support vegetative growth.
■ Use of heavy vehicles and equipment will not be permitted in stormwater management areas
designated for infiltration practices,where compaction would compromise the function of the
system.
■ Minimize compaction of both the base of the stormwater management areas any backfill.
Compaction will significantly contribute to design failure.
■ Use excavator or backhoes to excavate the stormwater management areas. To minimize
compaction,work excavators or backhoes from the sides to excavate the stormwater
management areas to appropriate design depth and dimensions.
■ Use excavating equipment with adequate reach so they do not work in the footprint of the
stormwater management area. If applicable and per the engineers direction use a cell
construction approach in larger stormwater management areas,whereby the basin is split into 500
to 1000 square foot temporary cells with a 10 to 15 foot earth bridge in between, so that cells can
be excavated from the side.
■ Compaction can be alleviated at the base of the area by using a primary tilling operation such as
a chisel plow, ripper, or subsoiler. These tilling operations are performed to refracture the soil
profile through the 12-in compaction zone. Substitute methods must be approved by the
engineer.
Specific Soil Compaction Controls
Vehicle i=guipment Restriction
■ Do not operate or store heavy equipment on a regular basis in the location where infiltration
practices are planned.
Construction Fencing
■ Avoid vehicular circulation through the stormwater management areas through installation of
construction fencing around the perimeter.
■ Install construction fencing as indicated on the Drawings.
Installation
■ Install protective construction fencing following building demo,site clearing and pavement
removal.
Maintenance Requirements
■ Maintain construction fencing as required,
4.8 Storm Drain Inlets
General
■ Temporary Inlet protection measures will be installed at all storm drain inlets that discharge directly
to a surface water (and is not first directed to a sediment basin,sediment trap, or similarly effective
control). Storm drain inlet will be installed to remove sediment from the discharge prior to entry
into the storm drain inlet.
Specific Storm Drain Inlet Controls
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Stormwater Pollution Prevention Plan (SWPPP)
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Silt Sack (or equivalent)
■ Install silt sack (or equivalent) prior to commencement of construction to existing catch basins.
Where there is evidence of sediment accumulation adjacent to the inlet protection measure, the
deposited sediment will be removed by the end of the same work day in which it is found or by
the end of the following work day if removal by the same work day is not feasible. The Silt Sack will
be replaced and disposed of off-site if damage is observed. Inlet control measures can be
removed in the event of flood conditions or to prevent erosion.
Installation
■ Install silt sacks prior to the start of construction activities.
■ At a minimum, silt sacks will be placed in catch basins within 100-feet of the work.
Maintenance Requirements
■ Comply with the following requirement in CGP Part 2.1.2.9.b: "Clean, or remove and replace, the
protection measures as sediment accumulates, the filter becomes clogged, and/or performance
is compromised. Where there is evidence of sediment accumulation adjacent to the inlet
protection measure, you must remove the deposited sediment by the end of the same work day
in which it is found or by the end of the following work day if removal by the same work day is not
feasible."
4.9 Dewatering Practices
General
■ direct discharge to the resource area will not be allowed.
■ If the water table is encountered during excavation, temporarily lower the water table by
pumping. Install a dewatering basin as indicated in the dewatering basin detail and provide a
dewatering plan depicting proposed dewatering location. Direct the pump discharge to this
basin to prevent sediments from leaving the construction area. Install additional basins if required.
Install the basin as indicated on drawings if so noted, otherwise install the basin(s) within the limit of
disturbance indicated by the silt fence or strawbales.
■ If the water table is encountered during excavation, temporarily lower the water table as
indicated in the specifications.
■ Prior to any dewatering, the dewatering plan must be approved by the engineer and
Cw°o nser'v'a$uon C";oMM SSkAl.
■ If dewatering is necessary during construction, implement the proper erosion and sediment control
measures on site to prevent erosion or sediment runoff. These measures can include dewatering
bags, temporary strawbales, silt fences,silt socks and/or other approved devices as indicated in
the details.
Specific Dewatering Practices
aewater_inq Practice
Dewatering Practice Description
■ As required
Installation
■ As required
Maintenance Requirements
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■ As required.
■ At a minimum, comply with following requirement in CGP Part 2.1.3.4: "With backwash wafer,
either haul if away for disposal or return it to the beginning of the treatment process; and replace
and clean the filter media used in dewatering devices when the pressure differential equals or
exceeds the manufacturer's specifications."
4.10 Other Stormwater Controls
General
■ Additional controls/practices will be undertaken to reduce pollution in stormwater runoff flows and
to comply with the CGP in addition to the erosion and sedimentation controls and the stormwater
management controls discussed above.
Specific Stormwater Control Practices
Earthwork
Description
• The exposure of disturbed surfaces to stormwater and potential stormwater erosion will be
minimized by well organized earthwork procedures. Stabilization procedures shall be undertaken
in accordance with this plan and the requirements of the CGP. Grubbing during wet seasons will
be avoided if feasible.
Snow Removal Plan
Description
■ Plowed snow collected from the roadway will be deposited onto free draining, pervious surfaces,
away from the site's drainage conveyance structures to maximize infiltration. Snowmelt runoff that
is not infiltrated will be directed to the site's stormwater management system.
Installation
■ As appropriate
Maintenance Requirements
■ Snow removal as necessary.
4.11 Site Stabilization
General
■ All exposed soil finish grade surfaces shall be immediately landscaped (native plantings/seed
mixes) and stabilized, or loomed, seeded and mulched,with a layer of mulch hay or matting
(natural fibers only). All disturbed areas must be graded, loomed and seeded prior to November
1st of each year. Outside of the growing season, exposed soil finish grade surfaces shall be
stabilized with a layer of mulch hay or matting until climate conditions allow for seeding. During
construction,any area of exposed soils that will be left idle for more than 30 days shall be stabilized
with a layer of mulch hay or other means approved by the NACC.
■ The amount of land disturbed during construction will be minimized to reduce the potential for
erosion and sedimentation. Prompt surface stabilization will be practiced to control erosion in
areas where disturbances cannot be avoided during construction. Stabilization measures shall be
initiated within 14 days following the end of construction at each portion of the site. Exceptions to
this requirement are allowable when snow cover prevents the initiation of stabilization within 14
days, in which case such measures shall be undertaken as soon as possible.
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■ For the purposes of this permit, EPA will consider any of the following types of activities to constitute
the initiation of stabilization:
o Prepping the soil for vegetative or non-vegetative stabilization;
o Applying mulch or other non-vegetative product to the exposed area;
o Seeding or planting the exposed area;
o Starting any of the above activities on a portion of the area to be stabilized, but not on the
entire area; and
o Finalizing arrangements to have stabilization product fully installed in compliance with the
applicable deadline for completing stabilization in Parts 2.2.1.2 and 2.2.1.3.
■ This list of examples is not exhaustive.
■ Note:The term "immediately" is used to define the deadline for initiating stabilization measures, in
the context of this provision, "immediately" means as soon as practicable, but no later than the
end of the next work day, following the day when the earth-disturbing activities have temporarily
or permanently ceased.
In order to verify the initiation of stabilization, the CGP also requires that records be retained as part of the
SWPPP including dates of major grading activities, cessation and initiation of construction activities, and
initiation of stabilization measures. Stabilization measures may include, but are not limited to, both
temporary and permanent seeding, permanent planting, mulching, geotextiles, vegetated buffer strips,
protection of trees, and preservation of mature vegetation.
Site Stabilization Practice (only use this if you are not located in an arid, semi-arid, or drought-stricken
area)
® Vegetative ❑Non-Vegetative
® Temporary ® Permanent
• Temporary Seeding-Temporary seeding of disturbed surfaces with fast-growing grasses to provide
greater resistance to stormwater runoff and/or wind erosion for areas where construction has
temporarily ceased.
40 Permanent Seeding-Permanent seeding of surfaces with vegetation, including but not limited to
grass, trees, bushes, and shrubs, to stabilize the soil. Establishing a permanent and sustainable
ground cover of a site stabilizes the soil while reducing the sediment content in runoff.
• Permanent Planting-the Coniractor shall install and adequately establish all planting as required
at the completion of the project (as shown on the Landscape Plan).
Temporary seeding or other soil stabilization measures shall be undertaken where construction activities
have ceased at the site. Topsoil stockpiles will be temporarily seeded to prevent erosion, and will be
surrounded with silt fence. When the final grade has been established, permanent vegetation will be
planted on the disturbed areas. The vegetation will consist of grass, shrubs, bushes, and trees,as
indicated on the Landscape Plan.
SECTION 5: POLLUTION PREVENTION STANDARDS
5.1 Potential Sources of Pollution
3
Potential sources of sediment to stormwater runoff:
■ Clearing and grubbing operations
■ Grading and site excavation operations
pu
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■ Vehicle tracking
■ Topsoil stripping and stockpiling
■ 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 and trash
= Construction Activity—paving, curb/gutter installation, concrete pouring, and building
construction.
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Materials List-Materials or substances listed below are expected to be present onsite during construction:
Pollutants or Pollutant Location on Site
Poll utant-Generating Activity Constituents (or reference SWPPI' ite map
(that copld be discharged.if .: where this is shown)
exposed to stormwater
Pesticides (insecticides, Chlorinated hydrocarbons, Herbicides used for noxious
fungicides, herbicides, organophosphates, weed control
rodenticides) carbamates, arsenic
Fertilizer Nitrogen, phosphorous Newly seeded areas
Perchloroethylene,
Cleaning solvents methylene chloride, No equipment cleaning
trichloroethylene, petroleum allowed in project limits
distillates
Asphalt Oil, petroleum distillates Streets and rooting
Concrete Limestone,sand, pH, Curb and gutter, building
chromium construction
Metal oxides,stoddard
Paints solvent, talc, calcium Building construction
carbonate, arsenic
Curing compounds Naphtha Curb and gutter
Stoddard solvent, petroleum Timber pads and building
Wood preservatives distillates, arsenic, copper, construction
chromium
Hydraulic oil/fluids Mineral oil Leaks or broken hoses from
equipment
Gasoline Benzene, ethyl benzene, Secondary
toluene,x lene, MTBE containment/staging containment/staging area
Diesel Fuel Petroleum distillate, oil & Secondary
grease, naphthalene, x lenes containment/stagin area
Kerosene Coal oil, petroleum distillates Secondary
containment/staging area
Ethylene glycol, propylene Leaks or broken hoses from
Antifreeze/coolant glycol, heavy metals
cop er, lead,zinc) equipment
Sanitary toilets Bacteria, parasites, and Staging area
viruses
The following product-specific practices will be followed onsite:
Petroleum Products-All onsite vehicles will be monitored for leaks and receive
preventative maintenance to reduce the chance of leakage. Petroleum products will be
stored in tightly sealed containers which area clearly labeled. Any asphalt substances
used onsite will be applied according to the manufacturers' recommendations.
Fertilizers-Fertilizers used will be applied only in the minimum amounts recommended by
the manufacturer. Once applied, fertilizer will be worked into the soil to limit exposure to
stormwater. Products will be stored in a covered shed. The contents of any partially used
bags of fertilizer will be transferred to a sealable plastic bin to avoid spills. Fertilizers utilized
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Stormwafer Pollution Prevention Plan (SWPPP)
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for landscaping and lawn care shall be slow release, low-nitrogen types (<5%) and
phosphorus free, and shall not be used within 25 feet of a resource area. Pesticides and
herbicides shall not be used within 100 feet of a wetland resource area.
Paints-All containers will be tightly sealed and stored indoors when not required for use.
Excess paint will not be discharged to the storm sewer system but will be properly disposed
of according to the manufacturers' instructions or stale and local regulations.
Concrete Trucks-Concrete trucks will not be allowed to wash out or discharge surplus
concrete or drum wash water on the site.
5.2 Spidi Prevention and Response
Spill Prevention
■ To minimize the risk of spills or other accidental exposure of materials and substances to
stormwater runoff, the following material management practices will be used throughout the
project:
o An effort will be made to store only enough products required to do the job.
o All materials stared onsite will be stored in a neat, orderly manner in their appropriate
containers and, if possible, under a roof or other enclosure.
o Products will be kept in their original containers with the original manufacturer's label.
o Substances will not be mixed with one another unless recommended by the manufacturer.
o Whenever possible, the maximum amount of a product will be used before disposing of
the container.
o Manufacturers' recommendations for proper use and disposal will be followed.
o The site superintendent will conduct daily inspections to ensure proper use and disposal of
materials.
■ To reduce the risk associated with hazardous materials used on the site, the following practices will
be used:
o Products will be kept in original containers unless they are not re-sealable.
0 original labels and material safety data sheets will be retained and kept onsite; they
contain important product information.
o If surplus product must be disposed of, manufacturers' or local and state recommended
methods for proper disposal will be followed.
Spill Response
■ To minimize the risk of spills or other accidental exposure of materials and substances to
stormwater runoff, the following material management practices will be used throughout the
project:
o Manufacturers' recommended methods for spill cleanup will be clearly posted, and site
personnel will be made aware of the procedures and location of the information and
cleanup supplies.
o Materials and equipment necessary for spill cleanup will be kept in the material storage
area onsite. Equipment and materials will include, but not be limited to, brooms, dust
pans, mops, rags, gloves, goggles, speedi-dry, sand,sawdust, and plastic and metal frash
containers specifically for this purpose.
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Stormwater Pollution Prevention Plan (SWPPP)
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o All spills will be cleaned up immediately after discovery.
o The spill area will be kept well ventilated and personnel will wear appropriate protective
clothing to prevent injury from contact with a hazardous substance.
o Spills of toxic or hazardous material will be reported to the appropriate state or local
government agency, regardless of the size.
o The site superintendent responsible for the day-to-day site operations will be the spill
prevention and clean-up coordinator. He will designate at least three other site personnel
who will receive spill prevention and cleanup training. These individuals will each become
responsible for a particular phase of prevention and cleanup. The names of responsible
spill personnel will be posted in the material storage area and in the onsite office trailer.
5.3 Fueling and Maintenance of Equipment or Vehicles
General
■ Several types of vehicles and equipment will be used on-site throughout the project, including
excavators, bulldozers, cranes, loaders, paving equipment, rollers,trucks and trailers and
backhoes.
Off-site Fueling and-Maintenance
Description
■ All major equipment/vehicle fueling and maintenance will be performed off--site. When vehicle
fueling must occur on-site, the fueling activity will occur in the staging area.
■ Only minor necessary regular equipment maintenance may occur on-site. No equipment fluid
maintenance or fluid changing activities are allowed on-site. Absorbent, spill-cleanup materials
and spill kits will be available at the combined staging and materials storage area.
Installation
■ BMPs implemented for equipment and vehicle maintenance and fueling activities will begin at the
start of the project.
Maintenance Requirements
■ 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 vehicles) 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.
5.4 Washing of Equipment and Vehicles
General
■ All equipment and vehicle washing will be performed off-site.
5.5 Storage, Handling, and Disposal of Construction Products, Materials, and Wastes
5.5.I Building Product, Pesticides, Herbicides, insecticides, Fertilizers, and Landscape Materials
General
■ Construction equipment and materials will be stored at the combined staging area and materials
storage areas. A watertight shipping container will be used to store hand tools, small parts,and
other construction materials.
■ All waste generated by,or associated with, the construction activity shall be contained within the
limit of work, and away from any wetland resource area. There shall be no burying of spent
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Stormwater Pollution Prevention Plan (SWPPP)
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construction materials or disposal of waste on the site by any other means. The applicant shall
maintain dumpsters for other suitable means) at the site for the storage and removal of such spent
construction materials off-site. However, no trash dumpsters will be allowed within 50 feet of areas
subject to protection under the local By Law.
• There shall be no dumping of leaves, grass clippings, brush, or other debris info a wetland resource
area or beyond the No-Disturbance zone.
Storage
Description
■ Nonhazardous building materials such as packaging material (wood, plastic, and glass),and
construction scrap material (brick wood, steel, metal scraps, and pipe cuttings) will be stored in a
separate covered storage facility adjacent to the shipping container. All hazardous-waste
materials such as petroleum products, paint, and equipment will be stored in structurally sound
and sealed containers under cover within the hazardous materials storage area.
5.5.3 Diesel Fuel, Oil, Hydraulic Fluids, Other Petroleum Products, and Other Chemicals
All equipment maintenance will be performed off-site.
5.5.4 Hazardous or Toxic Waste
General
■ Hazardous waste materials will be stored and disposed of as required by the Commonwealth of
Massachusetts in compliance with the hazardous waste regulations 310 CMR 30.00. The General
Contractor will be responsible for seeing that properly instructed plant personnel follow these
practices.
■ Solvents and flushing materials used during construction and pre-operational cleaning will be
provided, handled, managed, and removed by the contractor for appropriate off-site disposal.
■ Any disposal of hazardous materials will be completed using the required paperwork. Copies will
be provided to the Engineer and to the Town.
Storage
Description
■ Trash dumpsters will be installed once the materials storage area has been established.
■ Hazardous waste materials such as petroleum products and paint 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 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
Installation
■ Shipping containers used to store hazardous waste materials will be installed once the site
materials storage area has been installed.
Maintenance Requirements
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Stormwater Pollution Prevention Plan (SWPPP)
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■ 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.
5,5.5 Construction and Domestic Waste
General
■ Containment dumpsters will be provided from a licensed solid waste management company to
store solid waste and debris that cannot be recycled,reused or salvaged.
■ The dumpsters will meet all local and state solid waste management regulations. Potentially
hazardous wastes will be separated from normal wastes, including segregation of storage areas
and proper labeling of containers. Removal of all waste from the site will be performed by
licensed contractors in accordance with applicable regulatory requirements and disposed of at
either local or regional approved facilities. Waste materials will not be buried on-site. All
personnel will be instructed regarding the correct procedures for waste disposal. Notices stating
these procedures will be posted at the site, and the General Contractor will be responsible for
seeing that these procedures are followed.
Specific Pollution Prevention Practices
Trash Dumpsters
Description
■ Trash dumpsters will be installed once the materials storage area has been established.
Installation
■ Dumpsters will be provided at the start of construction.
■ Dumpsters will be covered at all times to prevent exposure to rain and snow and prevent wind
blown debris.
■ Dumpsters will not be located near storm drains.
Maintenance Requirements
■ The dumpsters will be inspected weekly and immediately after storm events. The dumpster will be
emptied weekly. If trash and construction debris are exceeding the dumpsier's capacity, the
dumpsters will be emptied more frequently.
5.5.6 Sanitary Waste
General
■ All sanitary wastes will be collected from the portable units by a licensed sanitary waste
management contractor.
Portable Toilets
Description
■ Temporary sanitary facilities (portable toilets) will be provided at the site during construction.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
■ The portable toilets will be brought to fhe site once the staging area has been established.
Maintenance Requirements
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Stormwater Pollution Prevention Plan (SWPPP)
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■ All sanitary waste will be collected from the portable facilities a minimum of three times per week
by local sanitary services provider.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.
5.6 Washing of Applicators and Containers used for Paint, Concrete or Other Materials
General
in The washout and cleaning of equipment including, paint, concrete, form release oils, curing
compounds, and other construction materials is not allowed on site.
SECTION 6: INSPECTION AND CORRECTIVE ACTION
6.1 Inspection Personnel and Procedures
Qualified personnel provided by the General Contractor shall regularly inspect the disturbed areas of the
construction site that have not been permanently stabilized, areas used for storage of materials that are
exposed to precipitation, the structural control measures, and locations where vehicles enter or exit the
site.
Disturbed areas, and areas used for storage of materials, that are exposed to precipitation shall be
inspected for evidence of, or the potential for, pollutant, entering the drainage system. The control
measures identified in this SWPPP shall be observed to ensure that they are operating correctly. Where
discharge locations or points are accessible, they shall be inspected to ascertain whether erosion and
sedimentation control measures are effective in preventing significant impacts to receiving waters. Where
discharge locations are inaccessible, nearby downstream locations shall be inspected to the extent that
such inspections are practicable. Locations where vehicles enter or exit the site shall be inspected for
evidence of offsite sediment tracking.
Personnel Responsible for Inspections
Julie Vondrak CWS
Ben Meade, Kris Houle-Horsley Witten Group
Inspection Schedule
Routine inspections of the features listed above shall be conducted at least once every seven
calendar days and within 24 hours after a storm event of 0.5 inches or greater. For areas of the
site that have been finally or temporarily stabilized or when runoff is unlikely due to winter
conditions (e.g., site is covered with snow, ice, or frozen ground exists), inspections shall be
conducted at least once every month. During extended periods of frozen conditions, a waiver
of the inspection requirements is available until one month before thawing conditions are
expected, as long as land disturbance activities have been suspended during this time. The
beginning and ending dates of a waiver period must be documented in this SWPPP.
Inspection Report Forms
See Appendix D
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6.2 Corrective Action
See Appendix F-Corrective Action Log
Personnel Responsible for Corrective Actions
Seth Zeren, RCG LLC
VJ Tocci,Tocci
6.3 SWPPP Modifications
Based on the results of the inspections, the SWPPP shall be modified as necessary to include additional or
modified controls required to correct any problems that are identified. Revisions to the SWPPP shall be
completed within seven calendar days following the inspection that identifies problems. If existing controls
need to be modified or it additional controls are necessary,implementation shall be completed before
the next anticipated storm event. If implementation before the next anticipated storm event is
impracticable, they shall be implemented as soon as practicable.
This SWPPP shall be updated whenever there is a change in design, construction, operation or
maintenance that may significantly affect the discharge of pollutants; if the SWPPP proves to be
ineffective in eliminating, minimizing, or controlling pollutants in stormwaler discharges; if additional or
modified BMPs are needed to correct problems identified during an inspection; or if new subcontractors
are identified that will implement the SWPPP.
6.4 Reporting
A report summarizing the scope of the inspection, the names and qualifications of the personnel making
the inspection, the date(s) of the inspection, and major observations relating to the implementation of this
SWPPP shall be made and retained as part of the SWPPP for at least three years from the date that the site
is finally stabilized. Major observations should include: the location(s) of discharges of sediment or other
pollutants from the site; the location(s) of controls that need to be maintained; location(s) of controls that
failed to operate as designed or proved inadequate for a particular location; and location(s) where
additional controls are needed that did not exist at the time of inspection. Such reports shall identify any
incidents of non-compliance.
Where an inspection report does not identify any incidents of noncompliance, the report shall contain a
certification that the facility is in compliance with the SWPPP and the CGP. All inspection reports shall be
signed in accordance with the CGP. All inspection reports shall be filed in Appendix D of this SWPPP.
Any unauthorized discharges, oil or chemical spills, or other incidents of noncompliance shall be
documented in Appendix E of this SWPPP. Detailed reports including the date and time of the incident,
location,volume and contents of spill,weather conditions,response procedures, agencies notified,
recommended revisions to the stormwater management program, operation procedures, and/or
equipment needed to prevent recurrence shall be maintained.
Spills of hazardous substances in amounts that are equal to or exceed Reportable Quantity (RQ) levels
may be possible during construction. USEPA regulations found at 40 CFR 1 t 2,40 CFR 117,40 CFR 302, and
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MM
DEP regulations 310 CMR 30 and 310 CMR 40 define RQ levels for oil and hazardous substances and the
corresponding contact information.
Discharges RQ's require that:
• Releases shall be reported to appropriate State and National agencies as required by the RQ
regulations and the provisions of the emergency response procedures as soon as the discharge is
acknowledged.
• In accordance with Commonwealth of Massachusetts regulations,310 CMR 30 and 310 CMR 40, a
release or threat of a release of a RQ of oil and/or hazardous materials exceeding specific
reporting thresholds must be reported to the DEP within 2 hours. See the DEP website at
(www.slate.ma.us/dep) or contact the Emergency Response Center's 24-hour Call Center (888)
304-1133 to report a spill. RQ's,as defined by DEP, are located in 310 CMR 40.16.00.
• Federal RQ's for releases into soil,water and air are listed in Table 302.4 of 40 CFR 302.4. The
National Response Center must be notified as soon as possible following a spill at the 24-hour Call
Center (800) 424-8802.
o Modification and review of the SWPPP shall ensue within seven calendar days of
knowledge of a release to provide description of the release, an account of the
circumstances leading to the release, the date of the release, and to prevent recurrence
of such a release.
o A written description of the release (including type and estimate of the amount of material
released), the date that such release occurred, the circumstances leading to the release
and steps taken to modify the SWPPP must be submitted to the USEPA,within 14 calendar
days of knowledge of the RQ release.
A discharge in harmful quantities is defined as a prohibited discharge of oil to the waters of the US or its
adjoining shoreline. Harmful quantity is defined at 40 CFR Part 112, to include discharges that:
1. Violate water quality standards; or
2. Cause a film or sheen upon or discoloration of the surface of the water or adjoining shorelines or
cause a sludge or emulsion to be deposited beneath the surface of the water or upon the
adjoining shoreline.
Under the DEP regulations 310 CMR 40, a release of oil or petroleum (gas, diesel,waste oil) of 10 gallons or
greater is considered reportable. Additional contaminants detected in the environment at or above a
certain concentration require reporting to the DEP and are listed in 310 CMR 40.16,00.
6.5 Additional Reporting
At least once during each week in which construction activities occur on-site and for as long there after as
ground remains unstabilized, the applicant shall submit a written report with photos from the"Erosion
Control Monitor"to the NACC certifying that, to the best of his/her knowledge and belief based on a
careful site inspection, all work is being performed in compliance with this Order of Conditions and that
approved setbacks are being adhered to. The erosion control monitor must visually inspect all
sedimentation / erosion control measures and assume responsibility for their maintenance on a weekly
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Stormwater Pollution Prevention Plan (SWPPP)
West Mill Redevelopment
basis and that they are functioning as intended. In addition, all wetland resource areas must be visually
inspected for siltation, turbidity, and/or other water quality impacts. The Erosion Control Monitor shall be
onsite during and/or following a major storm event of t/2"inch of rain or greater (24 hour event) to ensure
that soils remain stable, and erosion controls are adequate and secure.
6.4 Record Keeping
Records regarding stormwater pollution prevention activities shall be maintained with the official copy of
the SWPPP, located at the construction site. The records shall be retained and maintained for a period of
three years after the filing for the Notice of Termination of construction activities (see GCP for procedure).
Records to be retained shall include:
• The Construction SWPPP;
• The Notice of Intent to discharge to waters of the United States under authorization of the CGP;
• Management certification of this SWPPP;
• All contractor certifications;
• All inspection reports;
Construction activity records indicating dates of construction milestones specific to individual
areas of land disturbances, as well as of stormwater management and pollution prevention
control installations;
• All spill reports/notifications; and
All Notices of Termination
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6.7 Delegation of Authority
Identify the individual(s) or positions within the company who have been delegated authority to sign
inspection reports.
Attach a copy of the signed delegation of authority (see example in Appendix 1)
Duly Authorized Representative(s) or Position(s):
Horsley Witten Group
Ben Meade, Kris Houle, Pat Kelly, Jonathan Ford
30 Green Street
Newburyport, MA 01950
978--499-060 t
bmeade@horsleywitten.com
Julie Vondrak, CWS
603-475-5826
jvondrak@yahoo.com
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Stormwater Pollution Prevention Plan (SWPPP)
West Mill Redevelopment
SECTION 7: TRAINING
Complete the table below to provide documentation that the personnel required to be trained in CGP
Part 6 completed the appropriate training.
■ The following personnel, at a minimum, must be receive training, and therefore should be listed
out individually in the table below:
o Personnel who are responsible for the design,installation, maintenance, and/or repair of
stormwater controls (including pollution prevention measures);
o Personnel responsible for the application and storage of treatment chemicals (if
applicable);
o Personnel who are responsible for conducting inspections as required in Part 4.1.1;and
Personnel who are responsible for taking corrective actions as required in Part 5.
CGP Part 6 requires that the required personnel must be trained to understand the following if related to
the scope of their job duties:
■ The location of all stormwater controls on the site required by this permit, and how they are to be
maintained;
■ The proper procedures to follow with respect to the permit's pollution prevention requirements; and
■ When and how to conduct inspections, record applicable findings, and take corrective actions.
Table 7-1: Documentation for Completion of Training
Name Date Training Completed
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Stormwater Pollution Prevention Plan (SWPPP)
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SECTION 8: CERTiFICATION AND NOTIFICATION
I certify under penalty of law that this document and all attachments were prepared under my direction
or supervision in accordance with a system designed to assure that qualified personnel properly gathered
and evaluated the information submitted. Based on my inquiry of the person or persons who manage the
system, or those persons directly responsible for gathering the information, the information submitted is, to
the best of my knowledge and belief, true, accurate, and complete. I am aware that there are
significant penalties for submitting false information, including the possibility of fine and imprisonment for
knowing violations.
Name: Title:
Signature: Date:
[Repeat as needed for multiple construction operators at the site.]
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Stormwater Pollution Prevention Plan (SWPPP)
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SWPPP APPENDICES
Attach the following documentation to the SWPPP:
Appendix A-Site Maps
Appendix B-Copy of 2012 CGP
Appendix C-NOI and EPA Authorization Email
Appendix D-Inspection Form
Appendix E-Corrective Action Form
Appendix F-SWPPP Amendment Log
Appendix G-Subcontractor Certifications/Agreements
Appendix H-Grading and Stabilization Activities Log
Appendix I-Delegation of Authority
Appendix J-Notice of Termination
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Stormwater Pollution Prevention Plan (SWPPP)
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Appendix A-Site Maps
Stormwater Pollution Prevention Plan (SWPPP)
West Mill Redevelopment
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Stormwater Pollution Prevention Plan (SWPPP)
West Mill Redevelopment
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Stormwater Pollution Prevention Plan (SWPPP)
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Appendix B-Copy of 2012 CGP
Stormwater Pollution Prevention Plan (SWPPP)
West Mill Redevelopment
Appendix C--Copy of NOI and EPA Authorization email
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Appendix D-Copy of inspection Form
Stormwater Pollution Prevention Plan (SWPPP)
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Field Report No.1 page I
Client: ........ Project Narne:.............................................
Report W',"--"..... .... Project No: .....,,..,...,...................................
Report[rate:... Arrival Time:..........----..........................
Weathen.,....................................... Departure Tinw......... ........... .......
Hartley Witttn
Grwp,Irc.
Personnel on site:
Reference Plan:
Contractor(s)equipment:
SITE WORK OBSERVED
Erosion Control Drainage
Limit of Clearing/Clearing E I Wastewater U I
Excavation/Fill/Compaction U I Sidewalk I
Road Subbase U I Final Grading U I
Gravel Base Surface Stabilization
Pavement/Binder Only Monuments
Water Cleanup
Gas/Electric/Telephone other.
Photos Taken: Yes n No
General Site Comments:
•
SITE WORK COMMENTS,
•
Estimated Percent Complete:
OUTSTANDING ITEMS FROM PREVIOUS FIELD REPORT TO BE ADDRESSED:
•
Horsley Witten Group,Inc,
go Route 6A,Sandwich,FAA 02563 Phone:(SOB)$33-6600 Fax:(506)833-3150
30 Green Street Newburyport,MA 01950 Phone:(970)499-0601 Fax:(978)499-4602
370 tines street Providence,R1 02901 Phone:(401)272-1717 Fax:(401)437-8368
294 Washington Street,Suite$01 Boston,MA 02108 Phone:(857)263-8193
Stormwater Pollution Prevention Plan (SWPPP)
West Mill Redevelopment
Field Report No.1 page 2
WORK RECOMMENDED FOR ACCEPTANCEMCTION ITEMS:
NEXT SCHEDULED FIELD REPORT:
•
Signature: Date:
Distribution: Ovmer. Name Email
Affiliation
Architect: Name Email
Affiliation
Contractor: Name Email
Affiliation
Other. Name Email
Affiliation
PHOTOS:
Horsley Witten Group,lnc,
90 Route 6A,sandwich,t mh 02563 Phone:(500)833.6600 fax:(509)833.3150
30 Green Street Newburyport,MA 01950 Phone:(976)499-0601 Fax:(978)499-0602
370 ryes Street ProMence,Al02901 Phone:(401)272.1717 Fax:(401)437-8368
294 Washington street,suite 801 Boston,MA 0210 Phone:(957)263-8193
Stormwater Pollution Prevention Plan (SWPPP)
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Appendix E-Copy of Corrective Action Form
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Stormwater Pollution Prevention Plan {SWPPP)
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Contractor/Subcontractor Responsibilities for
Control Measure Implementation
Stormwater Pollution Contractor
Construction Control Measures Responsible for Date of
Activity Implementation Implementation
Stormwater Pollution Prevention Plan (SWPPP)
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Appendix F-SWPPP Amendment Log
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SWPPP Amendment Lag
No. Description of.fhe Amendment Date of Amendment Prepared by
Amendment Names) and Title
Storrnwater Pollution Prevention Plan (SWPPP)
West Mill Redevelopment
Appendix G-Subcontractor Certifications/Agreements
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SUBCONTRACTOR CERTIFICATION
STORMWATER POLLUTION PREVENTION PLAN
Project Number:
Project Title:
Operator(s):
As a subcontractor, you are required to comply with the Stormwater Pollution Prevention Plan
(SWPPP) for any work that you perform on-site. Any person or group who violates any condition
of the SWPPP may be subject to substantial penalties or loss of contract. You are encouraged to
advise each of your employees working on this project of the requirements of the SWPPP. A
copy of the SWPPP is available for your review at the office trailer.
Each subcontractor engaged in activities at the construction site that could impact stormwater
must be identified and sign the following certification statement:
I certify under the penalty of law that I have read and understand the terms and conditions of
the SWPPP for the above designated project and agree to follow the practices described in the
SWPPP.
This certification is hereby signed in reference to the above named project:
Company:
Address:
Telephone Number:
Type of construction service to be provided:
Signature:
Title:
Date:
Siormwater Pollution Prevention Plan (5WPPP)
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Appendix H-Grading and Stabilization Activities Log
Stormwater Pollution Prevention Plan (SWPPP)
West Mill Redevelopment
Appendix H-Grading and Stabilization Activities Log
Date Description of Grading Activity Description of Stabilization Measure Date Grading... :. Date When.
Grading and Location Activity Ceased Stabilization
Activity (indicate Measures. ::
Initiated ' Ternporo ry or Initiated
Permanent
Stormwater Pollution Prevention Plan (SWPPP)
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Appendix I-Delegation of Authority Form
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Delegation of Authority
1, (name), hereby designate the person or specifically described position
below to be a duly authorized representative for the purpose of overseeing compliance with
environmental requirements, including the Construction General Permit, at the
construction site. The designee is authorized to sign any
reports, stormwater pollution prevention plans and all other documents required by the permit.
(name of person or position)
(company)
(address)
(city,state,zip)
(phone)
By signing this authorization, I confirm that I meet the requirements to make such a designation
as set forth in Appendix I of EPA's Construction General Permit (CGP), and that the designee
above meets the definition of a "duly authorized representative" as set forth in Appendix 1.
I certify under penalty of law fhot this document and all attachments were prepared under my
direction or supervision in accordance with a system designed to assure that qualified personnel
properly gathered and evaluated the information submitted. Based on my inquiry of the person
or persons who manage the system, or those persons directly responsible for gathering the
information, the information submitted is, to the best of my knowledge and belief, true,
accurate, and complete. I am aware that there are significant penalties for submitting false
information,including the possibility of fine and imprisonment for knowing violations.
Name:
Company:
Title:
Signature:
Date;
Stormwater Pollution Prevention Plan (SWPPP)
West Mill Redevelopment
Appendix H-Notice of Termination
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PUMP DISCHARGE HOSE --� Mqulr*°
FROM DEWATERING SUMP PIT Flo.Rm su[tan Area Len flll.48
m C ft'/s As ft°I t ft
25 0.0665 13186 16.24
50 0.1130 263.82 2Z97 103 mm 527.54 n48 150 03355 791.36 39.80
2m M445D 105519 4593 ZZ97 INSTALL GEOTEXTILE FILTER
TO BE 250 =D�7805184&M
0 5135 25.69 BAG AT END OF PUMP HOSE
DETERMINED 300 3 56.27 tau
BY FLOWRATE 350 4 60.76 3D38 3.5'MIN, {�
(SEE TABLE) 400 6 64,95 3Z49TIE Aso 09 6a90 3a45
HOSE TO5m 80 72&1 36.32 —
WOODEN 12"DIA TUBULAR
STAKES SEDIMENT BARRIER
TIE HOSE TO
STAKED IN PLACE WOODEN
(SEE DETAIL) STAKES ORIENT CONTAINMENT AREA SO THAT BOTTOM OF
THE CONTAINMENT AREA SLOPES DOWN TOWARD
WATERPROOF LIN R ATERPROOF THE SUCTION HOSE
TARPAULIN OR CONTINUOUS SHEET OF CROSS-SECTION
POLYETHYLENE)DRAPED OVER STRAW BALES
STRAWBALE SEDIMENT BARRIER AND UNDER TUBULAR SEDIMENT BARRIER
TO BE NOTE:
DETERMINED 1. NUMBER OF BALES MAY VARY DEPENDING ON SITE CONDITIONS.
BY FLOWRATE 2. THE BASIN TO BE SIZED TO PREVENT WATER FROM OVERTOPPING THE STRAWBALES.
(SEE TABLE) 3. INLET HOSE TO BE INSTALLED IN AN EXCAVATED SUMP PIT FILLED WITH CRUSHED STONE.
PUMP SUCTION HOSE
(TO CATCHBASIN) PLAN VIEW DEWATERING CONTAINMENT AREA DETAIL
NOT TO SCALE