WAKEBY SOLAR PROJ_DRAFT SWPPP_06-09-23
DRAFT
STORMWATER POLLUTION
PREVENTION PLAN
WAKEBY ROAD SOLAR PROJECT
810 WAKEBY ROAD
BARNSTABLE, MASSACHUSETTS
Prepared Under:
U.S. Environmental Protection Agency
National Pollutant Discharge Elimination System
General Permit for Storm Water Discharges
From Construction Activities
U.S. Clean Water Act
Prepared for:
Applicant
TJA Clean Energy
150 John Vertente Blvd.
New Bedford, Massachusetts 02745
Prepared for:
Contractor/Responsible Party
Contractor to be determined after Planning Board Approval
Prepared by:
Atlantic Design Engineers, Inc.
P.O. Box 1051
Sandwich, Massachusetts 02563
June 9, 2023
ADE Job No. 3064.04
TABLE OF CONTENTS
1.0 SITE DESCRIPTION
1.1 PROJECT NAME AND LOCATION
1.2 CONTACT LIST
1.3 PLAN AND DOCUMENT REFERENCE
1.4 PURPOSE AND TYPES OF SOIL DISTURBING ACTIVITIES
1.5 SITE AREA AND RUNOFF COEFFICIENT ESTIMATES
1.6 NATURE AND SEQUENCE OF MAJOR ACTIVITIES
1.7 NAME OF RECEIVING WATERS
1.8 SENSITIVE AREAS TO BE PROTECTED
a) WETLANDS
b) RIVERFRONT AREA
c) ENDANGERED SPECIES
2.0 EROSION AND SEDIMENT CONTROLS
2.1 GENERAL STABILIZATION PRACTICES
2.2 STRUCTURAL PRACTICES/OPERATION & MAINTENANCE
2.3 STABILIZATION PRACTICES
2.4 STORMWATER MANAGEMENT/BMP’S
3.0 GOOD HOUSEKEEPING
3.1 MATERIAL HANDLING AND WASTE MANAGEMENT
3.2 ESTABLISH PROPER BUILDING MATERIAL STAGING AREAS
3.3 ESTABLISH PROPER EQUIPMENT/VEHICLE FUELING AND
MAINTENANCE PRACTICES
3.4 CONTROL EQUIPMENT/VEHICLE WASHING
3.5 SPILL PREVENTION
3.6 DEWATERING
4.0 TIMING OF CONTROLS
5.0 CERTIFICATION OF COMPLIANCE WITH FEDERAL, STATE, AND
LOCAL REGULATIONS
6.0 MAINTENANCE AND INSPECTION PROCEDURES
6.1 EROSION AND STORMWATER OPERATION INSPECTION AND
MAINTENANCE PRACTICES
6.2 RECORD KEEPING
7.0 POLLUTION PREVENTION PLAN CERTIFICATION
8.0 SUBCONTRACTOR’S CERTIFICATION
FIGURES
FIGURE 1 AERIAL PHOTOGRAPH LOCUS MAP
FIGURE 2 USGS TOPOGRAPHIC MAP
APPENDICES
APPENDIX A CONSTRUCTION SITE INSPECTION CHECKLIST/REPORT
APPENDIX B CORRECTIVE ACTION LOG SHEET
APPENDIX C SWPPP AMENDMENT LOG SHEET
APPENDIX D STORMWATER POLLUTION TRAINING LOG
APPENDIX E DELEGATION OF AUTHORITY
APPENDIX F LOCATION AND DETAILS OF BMP AND EROSION
CONTROL MEASURES
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1.0 SITE DESCRIPTION
1.1 PROJECT NAME AND LOCATION
Wakeby Road Solar Project
810 Wakeby Road
Marstons Mills-Barnstable, Massachusetts 02648
Latitude: 41.666449°N Longitude: 70.452998°W
The above coordinates are the approximate center of the locus.
Horizontal Reference Datum: WGS 84
1.2 CONTACT LIST
Engineer:
Richard J. Tabaczynski, P.E.
Atlantic Design Engineers, Inc. (Engineer)
P.O. Box 1051
Sandwich, MA 02563
Record Landowner:
Wakeby Road Realty LLC
PO Box 485
Crescent, GA 31304
Applicant:
TJA Clean Energy
150 John Vertente Blvd.
New Bedford, Massachusetts 02745
Contractor/Responsible Party:
• Contractor to be determined after Planning Board Approval
1.3 PLAN AND DOCUMENT REFERENCE
This Stormwater Pollution Prevention Plan has been prepared in reference to the
following (Site Plans):
• “Site Development Plans for 810 Wakeby Solar Project”, by Atlantic Design
Engineers, Inc. (Site Plans)
• 2022 Construction General Permit - "National Pollutant Discharge Elimination
System General Permit for Discharges from Construction Activities (as
modified)",
https://www.epa.gov/npdes/2022-construction-general-permit-cgp#2022cgp
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1.4 PURPOSE AND TYPES OF SOIL DISTURBING ACTIVITIES
The Applicant is proposing to construct of a large-scale ground mounted photovoltaic
solar project within a ±10.66-acre portion of fenced-in area hereinafter referred to as the
Wakeby Road Solar Project (the Project). The Project is located within ±19.32-acres of
land identified as 810 Wakeby Road property. This property is located in the village of
Marstons Mills within the Town of Barnstable, Massachusetts shown as Parcels 4, 5 and
52 on Barnstable Assessor Map 13.
The Project presently consists of a mostly cleared/disturbed area. Pockets of low growing
brush and young trees scatter the interior while light to moderate tree cover exists along
the edges of the parcels’ boundaries. The existing topography is variable but generally
slopes down on all sides to several natural depressions or excavated depressions within
the center. These depressions are the result of the parcels’ historical use as a sand and
gravel quarry. Existing soils consist of silt loam, loamy coarse sand, coarse sand, as well
as sand and gravel pits. Any vegetation within the limit of work will be cleared and
grubbed as needed for the construction of the solar array as well as the installation of
three (3) infiltration basins and associated infrastructure (Refer to the Site Plans – Site
Development Plans for 810 Wakeby Road Solar Project).
The Project layout and drainage has been designed to utilize the existing topography to
the extent possible. The interior of the Project will be graded to a maximum of 15% slope
while portions of the area surrounding the Project will be graded to a maximum of 50%.
Additionally, grading activities will include the construction of an earthen berm for
screening purposes and the gravel access road along the south, west, and northern
perimeter of the Project as well as excavation of stormwater infiltration basins. The
proposed stormwater system is primarily an open drainage system comprised of three (3)
infiltration basins, which will fully capture/infiltrate runoff generated on the site by a
100-year storm event. These basins were positioned in natural low areas located in the
northern, central, and southern portions of the Project.
Intermediate erosion controls have been proposed throughout the Project as well as at the
base steep slopes (≥30%). All disturbed areas will be seeded as required to provide
stabilization in accordance with the requirements set forth within the 2022 Construction
General Permit.
A wetland review of the Site was completed by Wendell Wetland Services on October
23, 2019, and no wetlands were identified on the three parcels proposed for the solar
development. The Town of Barnstable Conservation Commission issued a negative
Determination of Applicability (RDA) for the project on December 3, 2019. The
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MassDEP Priority and Estimated Habitats MassGIS shows the Site is not within a
Priority Habitats of Rare Species or Estimated Habitats of Rare Wildlife Zone (NHESP).
The project does not lie within a Flood Zone based upon a review of available Federal
Emergency Management Agency (FEMA) data/mapping.
The Project is subject to the Massachusetts Stormwater Management Policy, and as such
a Stormwater Management/Drainage Analysis Report which addresses the stormwater
standards of the Town of Barnstable, and the Massachusetts Department of
Environmental Protection has been prepared as part of the permitting and design process.
1.5 SITE AREA AND RUNOFF COEFFICIENT ESTIMATES
The total acreage of the three properties which compose 810 Wakeby Road (Parcels 4, 5
and 52) is ±19.32-acres, of which, greater than ±10.66-acre will be included as part of
construction activities including, but not limited to, grading required for construction of
earthen berm for screening, stormwater infrastructure, grading for construction of access
road, installation of solar panel arrays and their corresponding electrical systems,
underground/overhead utilities, fencing, and vegetative screening.
The Project will be situated on land previously cleared/disturbed for use as a sand and
gravel quarry. The solar array has been designed to follow existing topography to the
maximum extent practicable with proposed grading needed to stabilize slopes at a grade
which permits ground mounted solar installation. Existing vegetated ground cover,
beneath, around and between the panels will be enhanced following seeding as required
to provide stabilization in accordance with the requirements set forth within the 2022
Construction General Permit.
The only increase in impervious area is associated with the proposed equipment pads,
which are proposed to be located on the northern and southern points of the Project. The
size of the proposed pads is negligible when compared to the overall size of the
surrounding grassed area.
Although clearing existing low growing brush within the Project area will result in a
marginal increase to the existing runoff coefficient, stormwater measures are being
proposed which will fully capture/infiltrate runoff generated on the site by a 100-year
storm event. As part of the stormwater design, three (3) infiltration basins are proposed in
natural low areas located in the northern, central, and southern portions of the Project.
The stormwater facilities are designed to account for any increase in run-off/volume and
replicate pre-development runoff characteristics of the site.
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1.6 NATURE AND SEQUENCE OF MAJOR ACTIVITIES
A general sequence of construction for the site work is as follows:
1) Stake limit of work to accurately define the limits of work for the access roads, solar
field, site grading, utilities, and stormwater facilities.
2) Install perimeter erosion control measures as shown on plans.
3) Install crushed stone tracking pads at the start of the access road.
4) Grade access road as required to facilitate construction activities throughout the site.
5) Prepare contractor staging/laydown area for temporary parking, storage, wheel wash area,
concrete wash-out, and mobile fueling areas.
6) Perform tree clearing activities and till/grub areas within the proposed limits of work as
required to eradicate existing vegetation.
7) Grade the site to attain the elevations and slopes shown on the plans. Grading activities
should be avoided during extremely wet conditions to minimize soil compaction, deep
rutting, and soil smearing.
8) Install stormwater measures, including grassed swales once rough grading is complete. If
necessary, provide temporary protective measures, which may include barriers and/or silt
sacks until site is stabilized and vegetated. Intermediate erosion controls should be
installed prior to the installation of the solar array racking system.
9) Use disks, tillers, or harrows to break up the surface where soil has become compact ed
during construction activities in order to create viable seed beds.
10) Install vegetative screening and, as needed, organic, clean top soil to improve plant health
and longevity
11) Initiate the installation of stabilization measures immediately in any areas of exposed soil
more than five acres where construction activities have permanently ceased or will be
temporarily inactive for 14 or more calendar days. Complete the installation of measures
as soon as practicable, but no later than (7) calendar days after stabilization has been
initiated. Oats will be used for a spring or summer seeding, winter wheat for a fall
seeding. This cover crop will establish quickly, providing additional erosion control
throughout construction, along with protection of final native vegetation during its
establishment period.
12) Install perimeter fencing leaving sections open for ingress/egress, temporary fencing shall
be used to maintain site security.
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13) Install solar field array and electrical facilities on site. Work involving foundation pile
driving and trenching shall be staged to concentrate work in phases, to reduce site
disturbance. Seed and mulch any disturbed areas as they are completed.
14) Once site construction is complete, permanent seeding will be applied by broadcasting.
15) To assure rapid stabilization, supplement seeding for areas where coverage is less than
70% uniform cover of vegetation.
16) Once the site is permanently stabilized at 70% uniform cover of vegetation or more,
remove all temporary erosion and sediment control devices.
1.7 NAME OF RECEIVING WATERS
There are no direct untreated storm water discharge to any water body, wetland, pond,
river, stream, or buffer zone on or adjacent to the site. All stormwater runoff from
new impervious areas will be directed toward a detention basin.
1.8 SENSITIVE AREAS TO BE PROTECTED
a) WETLANDS
There are no bordering vegetated wetland systems located on the Site.
b) RIVERFRONT AREA
There is no Riverfront Area on the Site.
c) ENDANGERED SPECIES
Based on the US Fish and Wildlife Service research, the area is mapped for the Northern
Long-Eared Bat. However, a federally designated critical habitat (Hibernacula or
Maternity Roost Trees) is not located on the project site. The proposed Project location is
more than 5 miles from any known Hibernacula or Maternity Roost Tree locations. The
resulting distance from the project to the closest critical habitat, coupled with the fact that
the project is designed to fully capture/infiltrate runoff generated on the site by a 100-
year storm event demonstrates that the project/stormwater will not result in adverse
impacts to the listed species.
2.0 EROSION AND SEDIMENT CONTROLS
2.1 GENERAL STABILIZATION PRACTICES
Detailed erosion control plans, notes and details are included in the Site Plans. The
±10.66-acres that comprise the Project will require regrading for earthen berm,
stormwater infiltration basins, site access road, and equipment pads prior to installation of
the solar racking/modules, as shown on the Site Plans (Refer to Site Plans by Atlantic
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Design Engineers, Inc.). The Project will be installed in a manner to reestablish the
vegetated ground cover, beneath, around and between the panels as quickly as possible.
Portions of the site that are disturbed during construction will be revegetated by
spreading non-invasive local, native, naturalized herbaceous seed mix as required to
ensure the disturbed areas will stabilize quickly (Refer to Site Plans by Atlantic Design
Engineers, Inc.). Maintaining the existing vegetation and reseeding the site in this manner
will minimize potential for erosion.
As previously mentioned, erosion control measures (silt sock, or approved equal) will be
in place and maintained at the proposed limit of work throughout construction, until
vegetation has stabilized, in order to protect the surrounding area. As depicted/detailed on
the Site Plans, intermediate erosion controls have been proposed throughout the Project
as well as at the base steep slopes (≥30%). Erosion control barriers will be repaired
immediately if there are any signs of damage, erosion, or sedimentation. Accumulated
sediment deposits will be removed after each significant storm event, or when deposits
reach approximately one-half the height of the barrier. Erosion will be minimized by
protecting exposed soils from rainfall impact and overland flow, and will be stabilized via
rolled erosion control products or mulching.
The following general soil erosion and sedimentation control practices will be applied
during construction operations of all phases to protect local water quality.
1. The BMP’S used to control erosion and sedimentation shall be imple mented as
follows:
A. Erosion and sediment control practices will be constructed or installed
before land disturbing construction activities begin in accordance with the
plan developed for this site.
B. Erosion and sediment control practices shall be maintained until final
stabilization.
C. Final stabilization activity shall commence when land disturbing activities
cease and final grade has been reached on any portion of the site.
D. Temporary stabilization will commence as soon as possible after land
disturbance ceases. Temporary stabilization activity shall commence when
land disturbing construction activities have temporarily ceased and will not
resume for a period exceeding 14 calendar days.
E. If disturbing five acres or less at a time, complete the installation of
stabilization measures as soon as practicable, but no later than 14 calendar
days after stabilization has been initiated.
F. If disturbing more than five acres at a time, complete the installation of
stabilization measures as soon as practicable, but no later than seven (7)
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calendar days after stabilization has been initiated.
G. BMP’s that are no longer necessary for erosion and sediment control shall
be removed.
2. Temporary erosion/sediment control barriers shall be installed around the perimeter
of the construction site prior to commencement of site disturbance in accordance
with MADEP standards. Sediment deposits must be removed when the deposits
have accumulated to 1/2 the height of the barrier. Torn, degraded, trampled, or
otherwise compromised erosion/sediment control barriers will be properly replaced.
As previously stated, double erosion control barriers will be placed within 30 feet of
the wetland system.
3. A stone tracking pad, at the construction entrance, (50 feet long min) shall be
installed, underlain by geotextile fabric. The tracking pad will consist of 1 - 2" clear
or washed stone, installed and maintained to a minimum thickness of 6-inches
dependent on site soil conditions. The tracking pads will be maintained by scraping
or top-dressing with additional aggregate. If conditions on the site are such that the
sediment is not removed from vehicle tires by the tracking pad, then tires shall be
washed utilizing pressurized water before entering a public road. Stone tracking pad
and tire washing shall be constructed and maintained in accordance with MADEP
standards. Final location of the tracking pad shall be coordinated with the contractor
and owner.
4. A staging and parking area shall be designated for material laydown. Storage of all
equipment and construction materials shall be stored according to all federal and
state standards.
5. A concrete washout area, fueling area, and vehicle wash area will be located in the
vicinity of the designated construction entrance. Concrete washout water will be
contained and disposed properly. An impervious surface (such as polymer barrier)
will be utilized surrounding the mobile fueling tank and fueling area. Contractor to
keep a spill response kit onsite throughout construction. Concrete washout and
vehicle fueling area shall be implemented in accordance with MADEP standards.
6. A temporary bale sediment barrier will be utilized to intercept sediment-laden sheet
flow, if needed, consisting of a row of entrenched and anchored hay or straw bales.
At a minimum, sediment bale barriers shall be placed in a single row, lengthwise on
the contour, with the ends of adjacent sediment bale barriers tightly abutting one
another. The holes between bales shall be chinked (filled by wedging) with straw,
hay or equivalent material to prevent water from escaping between the bales.
7. Damage to any existing utilities and services indicated to remain shall be the
responsibility of the contractor; contractor shall repair and/or replace in kind.
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8. Dust control measures shall be implemented during construction, including but not
limited to watering down exposed dirt and gravel access roads, if needed.
9. Existing trees or vegetation indicated to remain shall be avoided and fenced off
appropriately to avoid any confusion, if applicable. Contractor shall avoid
damaging any existing vegetation to minimize potential erosion.
10. No dewatering activities are planned. If dewatering becomes necessary, it shall be
conducted in accordance with MADEP standards. Contractor to install tem porary
settling basin or other appropriate best management practice as necessary and locate
in upland areas. Dewatering directly into field tiles, storm sewers or off-site
wetlands is prohibited.
11. Permanent or temporary soil stabilization must be applied within 14 calendar days
of the end of active soil disturbance. All temporary seeding activities shall be
implemented in accordance with MADEP standards.
12. The contractor shall inspect erosion control measures weekly until construction is
complete and the site is stabilized. Inspections must be conducted within 24 hours
after a rain event of 0.25 inches or more. Necessary repairs or replacements of
practices must be made within 24 hours of inspection. Weekly written reports of all
inspections must maintained at the construction site.
13. The temporary erosion measures shall remain in place until the site is permanently
stabilized at a minimum 70% uniform cover of vegetation.
14. All materials and stockpiles shall be stored on level areas outside of any flood
zones, wetlands, or buffer zone areas, if applicable. All stockpiles shall be
surrounded by hay bales, shall have side slopes no greater than 30% and shall be
seeded or stabilized if left undisturbed for two weeks or more.
15. Any slope steeper than 3:1 shall be equipped with slope stabilization fabric or
erosion control matting.
16. Additional erosion control measures shall be instituted as conditions warrant or as
directed by the engineer and/or the town.
17. Material stockpiles shall not be located within the path of existing or proposed
watercourses (either temporary or permanent) or those areas subject to storm water
flow.
18. All disturbed or exposed areas subject to erosion, which remain disturbed but
inactive for at least thirty days, shall receive temporary seeding in accordance with
the Massachusetts erosion and sediment control guidelines. In all cases,
stabilization measures shall be implemented as soon as possible in accordance with
the Massachusetts erosion and sediment control guidelines.
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19. Earthwork activity on the site shall be done in a manner such that runoff is directed
away from abutting structures, property, etc.
20. The contractor shall keep on site at all times additional hay bales and extra siltation
fencing for installation at the direction of the engineers or the town to mitigate any
emergency control.
21. The contractor shall be responsible for the siting, relocation and augmentation of
erosion control devices as the project progresses and the site drainage conditions
change.
22. The contractor shall minimize the area of disturbed soil. Efforts shall be made to
limit the time of exposure of disturbed areas.
2.2 STRUCTURAL PRACTICES/OPERATION & MAINTENANCE
Erosion Control Barriers
Erosion control barriers (sediment logs, haybales, silt fence, etc.) should be inspected
weekly, promptly after each major rainfall event (>0.25 inches per 2022 CGP) and at
least daily during prolonged rainfall. Remove built up sediment and debris from erosion
barriers/sediment logs and “silt socks” when accumulation has reached 50% of the
structure height and immediately replace any erosion and sediment control structures that
are damaged. (Additional erosion and sediment control barriers shall be stored onsite).
Stormwater Basins
At a minimum shall be inspected after every major storm event (>0.25 inches per 2022
CGP) for the first six (6) months, then in the spring and fall of every year, thereafter.
Note how long water remains standing in basin after a storm; standing water within the
basin >72 hours after storm events should be immediately addressed. Also, within the
basin, check for signs of differential settlement, cracking, erosion, leakage in
embankments, tree growth in embankments, condition of riprap, sediment accumulation
and the health of the turf.
Stormwater basins shall be mowed a minimum of twice per year. Grass clippings and
accumulated organic matter should be removed from the basin to a non-sensitive area.
Repairs and reseeding should be done as required. Sediment and debris should be
removed manually when stormwater basin is thoroughly dry, a minimum of once per year
or when the sediment level reaches a depth of three inches (3”) in the basin or half an
inch (1/2”) in the low flow drain.
2.3 STABILIZATION PRACTICES
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Cover Crop
A cover crop shall be provided within the limits of construction. Cover crop shall be
comprised of non-invasive local, native, naturalized herbaceous species (annual
ryegrass). The cover crop is an annual grass species that germinates quickly and will
reduce the risk of on-site soil erosion and deter the establishment of weeds prior to
permanent seeding. All disturbed areas shall be seeded with cover crop prior to (date
TBD) regardless of construction status.
Dust Control
Dust control will be maintained by sprinkler or water truck as necessary during grading
operations to minimize sediment transport and to maintain acceptable air quality
conditions. Repetitive treatment will be done as needed until soils are paved or otherwise
stabilized.
Stabilized Construction Entrance
A crushed stone tracking pad will be provided at the entrances to the site to help reduce
vehicle tracking of sediments.
2.4 STORMWATER MANAGEMENT/BMP’s
As previously mentioned, new impervious areas are limited to the proposed equipment
pads. The Project’s drainage has been designed to utilize the existing topography to the
extent possible.
The interior of the Project will be graded to a maximum of 15% slope while portions of
the area surrounding the Project will be graded to a maximum of 50%. Additionally,
grading activities will include the construction of an earthen berm for screening purposes
and the gravel access road along the south, west, and northern perimeter of the Project as
well as excavation of stormwater infiltration basins. The proposed stormwater system is
primarily an open drainage system comprised of three (3) infiltration basins, which will
fully capture/infiltrate runoff generated on the site by a 100-year storm event. These
basins were positioned in natural low areas located in the northern, central, and southern
portions of the Project.
The stormwater management system for the project consists of on-site Best Management
Practices (BMP’s) to minimize any impacts the proposed development may have on
stormwater quality. The proposed stormwater management system depicted on the
drawings was prepared by others as part of the permitting and design which was reviewed
and approved by the Town of Barnstable. The following BMP’s have been incorporated
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into the design to treat/handle the stormwater runoff generated by the site:
• Erosion Control Barriers
• Stabilized Construction Entrance
• Proposed Stormwater Basins
The location and details of the Stormwater BMPs and Erosion Control Measures are
provided in Appendix F.
3.0 GOOD HOUSEKEEPING
3.1 MATERIAL HANDLING AND WASTE MANAGEMENT
Waste Materials
All non-hazardous waste materials will be collected and disposed of in metal trash
dumpsters in accordance with State/Local standards. Dumpsters 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 trash and construction debris
from the site will be deposited in the dumpsters. All personnel will be instructed, during
tailgate training sessions, regarding the correct procedure for 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. All non-hazardous waste disposal is to be done in
accordance with local, state, and federal regulations.
Hazardous Waste
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 in the hazardous-materials storage area and segregated from other non-waste
materials. Secondary containment will be provided for all materials in the hazardous
materials storage area and will consist of commercially available spill pallets.
Additionally, all hazardous 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.
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Sanitary Waste
Temporary sanitary facilities (portable toilets) will be provided at the site. Locate the
toilets away from concentrated stormwater flow paths, stormwater conveyances and
drains, and away from traffic flow areas and place collection pans underneath as
secondary containment.
Recycling
Wood pallets, cardboard boxes, and other recyclable construction scraps will be disposed
of in a designated dumpster for recycling in accordance with State/Local requirements.
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.
3.2 ESTABLISH PROPER BUILDING MATERIAL STAGING AREAS
Combined Staging Area
Construction equipment and maintenance 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. 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 oil filters, petroleum products, paint, and equipment maintenance fluids will be
stored in structurally sound and sealed containers under cover within the hazardous
materials storage area. Large items, such as framing materials and stockpiled lumber, will
be stored in the open in the storage area. Such materials will be elevated on wood blocks
to minimize contact with runoff.
3.3 ESTABLISH PROPER EQUIPMENT/VEHICLE FUELING AND
MAINTENANCE PRACTICES
Vehicle Equipment Fueling and Maintenance
Several types of vehicles and equipment will be used on-site throughout the project,
including graders, scrapers, excavators, loaders, rollers, trucks and trailers, backhoes, and
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forklifts. All major equipment/vehicle maintenance will be performed off-site. When
vehicle fueling must occur on-site, the fueling activity will occur in the staging area in
accordance with the following procedures:
• Contractors will not store fuel for refueling construction vehicles onsite.
• Spill kits will be stored in readily accessible areas for quick use in the event that they
are needed by the construction or re-fueling personnel.
• All fuel nozzles will be equipped with functional automatic shut-off valves. Drip
trays and sorbent pads will be used during on-site re-fueling to minimize spills. Prior
to departure of any fuel tank truck, all outlets on the vehicle will be examined by the
driver for leakage and tightened, adjusted, or replaced to prevent leaking while in
transit.
• A drip pan (minimum 15-gallon capacity) will be placed under the construction
equipment being fueled.
• A spill kit consisting of absorbent, spill-cleanup materials and overpack drum will be
available at the fueling 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 Section 3, 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.
3.4 CONTROL EQUIPMENT/VEHICLE WASHING
All equipment and vehicle washing will be performed off-site. In addition, all earth
moving construction vehicles will be washed down off-site prior to entering the property
to remove plants, seeds and other materials in order to minimize the potential for invasive
species being carried onto the Site. High pressure washing is preferred along with a
visual inspection for visible soils, vegetation or other debris on each new vehicle entering
the Site during construction.
3.5 SPILL PREVENTION
A Spill Prevention Control and Countermeasures Plan, if available, is to be incorporated
into this SWPPP. At a minimum, the following recommended spill prevention procedures
are to be implemented once construction begins on the site.
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• Material safety data sheets, a material inventory, and emergency contact information
will be maintained at the on-site project trailer.
• Equipment, materials and manufacturers' recommended methods for spill cleanup
will be clearly posted and site personnel will be made aware of the procedures and the
location of the information and cleanup supplies.
• Spill kits, materials and equipment necessary for spill cleanup will be kept at the on-
site project trailer. Equipment and materials will include, but is not limited to,
brooms, dust pans, mops, rags, gloves, goggles, kitty litter or speed-dry, sand,
sawdust, shovels, wheelbarrows, and plastic and metal trash containers specifically
designed for cleanup purposes.
• All spills will be cleaned up immediately after discovery.
• The spill area will be kept well ventilated and personnel will wear appropriate
protective clothing to prevent injury from contact with a hazardous substance.
• Spills of toxic or hazardous material in excess of reportable quantities will be
reported to the Town of Barnstable and the Massachusetts DEP.
• An appropriately trained supervisor will be designated as the spill prevention and
cleanup coordinator. This individual will become responsible for the various phases
of prevention and cleanup. The name of responsible spill prevention and cleanup
coordinator will be posted on the site.
• 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 posed in the office trailer, and the individual who manages day-to-day site
operations will be responsible for seeing that these procedures are followed.
3.6 DEWATERING
Dewatering is not anticipated. If necessary, settling areas shall be constructed first and
utilized as dewatering basins. If this is not feasible, the contractor shall meet on site with
the engineer to establish locations for dewatering, using one of the methods outlined
below.
1. Drainage generated as a result of trench dewatering shall be discharged to existing
drainage courses with proper erosion control measures subject to approval by the
Town. Discharge directly to wetlands and onto pavement or private property shall not
be allowed.
2. Dewatering of excavated areas (if necessary) will be accomplished by pumping to
designated temporary dewatering basins and/or perforated pipe/filter fabric
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dewatering devices (designed to travel with the excavation work). The perforated
pipe/filter fabric dewatering devices will be oriented parallel to existing site contours,
and will outlet away from waterways and water bodies.
3. In order to minimize the quantities and extent of dewatering, trench excavation, utility
installation, backfilling, and stabilization will be conducted in segments. The length
and duration of excavated trench segments will vary in accordance with field
conditions, dewatering capacity, and the practical needs of the pipe installation
operation.
4. Sediment/dewatering basins shall be constructed as required prior to excavation
activities for utility installation in areas of high groundwater. These basins will act to
settle suspended solids from pumped groundwater prior to the release of this water.
Basin will be excavated where possible; additional storage volume will be provided
by surrounding the basin with excavated soil and a berm of silt socks, haybales and/or
filter fabric fencing. Additional basins will be constructed as necessary to meet the
needs of any dewatering operation.
5. As an alternative to sediment basins in upland, gradually sloping areas, trench
dewatering may be conducted by pumping released groundwater into a 100-foot long
perforated pipe (wrapped in filter fabric). Pipe will be placed along (parallel to)
elevational contours to minimize the rate of release from the pipe line. The open end
of the pipe will be oriented away from waterways. The filter fabric wrapping will be
cleaned or replaced as needed.
4.0 TIMING OF CONTROLS
As indicated in the Sequence of Major Activities, siltation barriers, erosion control
measures and crushed stone tracking pads will be installed prior to clearing, grubbing,
and excavation activities. Once construction activity ceases permanently in an area, that
area will be stabilized with permanent seed.
5.0 CERTIFICATION OF COMPLIANCE WITH FEDERAL, STATE,
AND LOCAL REGULATIONS
The projects stormwater management system is awaiting approval by the Town of
Barnstable Planning Board. State and Federal pollution control requirements under the
U.S. Clean Water Act have also been met by consulting the latest versions of the
following documents in preparing the construction plans and this stormwater pollution
prevention plan:
• Commonwealth of Massachusetts “Construction Standard Details” published by the
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Massachusetts Highway Department
• Commonwealth of Massachusetts “Wetlands Protection Act Regulation, 310 CMR
10.00” published by the Massachusetts Department of Environmental Protection
• Commonwealth of Massachusetts “Stormwater Management Handbook” Volumes 1-
3, published by the Massachusetts Department of Environmental Protection
• Commonwealth of Massachusetts “Stormwater Handbook for Highways and Bridges”
published by the Massachusetts Highway Department
• U.S. Environmental Protection Agency “Stormwater Management for Construction
Activities: Developing Pollution Prevention Plans and Best Management Practices”
published Office of Water (WH-547) EPA 832-R-92-005.
• Massachusetts “Erosion and Sedimentation Control Guidelines for Urban and
Suburban Areas” published by the Massachusetts Department of Environmental
Protection.
6.0 MAINTENANCE AND INSPECTION PROCEDURES
6.1 EROSION AND STORMWATER OPERATION INSPECTION AND
MAINTENANCE PRACTICES
General Notes
1. The contractor (TBD) shall be responsible for the proper inspection and maintenance
of all stormwater and erosion control facilities until the project construction is
completed. The contractor shall clean all components of the stormwater management
system at the completion of construction, immediately prior to turning over operation
and maintenance responsibility to the project proponent.
2. Upon completion of construction, the operation and maintenance of all components of
the stormwater management system will be the responsibility of the owner:
TBD
3. The owner/contractor/facility manager shall file an inspection report with the design
engineer and, if necessary, the Town of Barnstable following each site inspection as
recommended in the O&M schedule. Copies of the inspection reports are to be made
available to the EPA as required per the 2022 EPA Construction General Permit. The
inspection report shall identify the date of inspection, name and contact number of
responsible party, specific structures inspected, specific maintenance and/or repairs
required and general observations. Any deficiencies noted in the inspection report
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shall be corrected to the satisfaction of the above referenced agencies.
4. Disposal of accumulated sediment and hydrocarbons to be in accordance with
applicable local, state and federal guidelines and regulations.
5. There shall be no illicit discharge of any waste or waste water into the stormwater
management system. The maintenance of the facility shall be undertaken in such a
manner as to prevent any discharge of waste or waste water into stormwater
management system. Any waste products generated during maintenance shall be
properly disposed of off-site.
Erosion Control Facilities
Erosion Control Barriers
Inspect weekly and after every major storm event (>0.25 inches per 2022 CGP) during
construction and for the first few months after construction to ensure proper stabilization
and function, thereafter inspect at least twice per year during wet weather to ensure the
trenches are draining properly and the surrounding area is clear of debris. Check for
erosion, clogging and trash, and remove organic matter, weeds, trash and debris as
necessary during construction, while dry and at least every five years after construction.
Stabilized Construction Entrances
The entrances and exits to and from the site shall be maintained in a condition which will
prevent tracking or flowing of sediment onto public right-of-way. All sediment spilled,
dropped, washed or tracked onto public right-of-way must be removed immediately.
Stormwater Facilities
Stormwater Basins
At a minimum shall be inspected after every major storm event (>0.25 inches per 2022
CGP) for the first six (6) months, then in the spring and fall of every year, thereafter.
Note how long water remains standing in basin after a storm; standing water within the
basin >72 hours after storm events should be immediately addressed. Also, within the
basin, check for signs of differential settlement, cracking, erosion, leakage in
embankments, tree growth in embankments, condition of riprap, sediment accumulation
and the health of the turf.
Stormwater basins shall be mowed a minimum of twice per year. Grass clippings and
accumulated organic matter should be removed from the basin to a non-sensitive area.
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Repairs and reseeding should be done as required. Sediment and debris should be
removed manually when stormwater basin is thoroughly dry, a minimum of once per year
or when the sediment level reaches a depth of three inches (3”) in the basin or half an
inch (1/2”) in the low flow drain.
6.2 RECORD KEEPING
The contractor shall keep records of all inspections and maintenance performed on the
stormwater BMP’s and the erosion and sedimentation control devices. Inspection forms
are provided in Appendix A. Inspection reports should address, at a minimum:
• Date of Inspection
• Name of Inspector
• Qualifications of Inspector
• Areas and/or devices that were inspected
• Observed conditions of items
• Any maintenance or other activity that was performed
• Corrective measures needed
Records of the inspections shall be kept in the on-site office trailer and copies provided to
the design engineer and the Town of Barnstable, if required. If inspection results dictate
the need, modifications and/or additions should be made to the Stormwater Pollution
Prevention Plan to provide a better functioning erosion and sedimentation control system.
All modifications required to correct stormwater controls must be made within 7 days of
discovery of the issue. When the corrective actions result in changes to any of the
stormwater controls or procedures documented in the SWPPP, the SWPPP must be
modified accordingly within 7 days of completing corrective action work.
Other records that should be kept on site are listed below:
• Dates of grading, construction activity, and stabilization
• A copy of construction general permit
• Inspection reports
• A copy of the EPA notification of their receipt of the complete NOI/application.
A log must also be kept to record any changes in the activities or their timing on the
project, changes in personnel, changes in inspection and maintenance procedures, updates
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to construction plans, and any other changes made to proposed design plans.
Documentation of the training of staff must also be kept by the contractor including
dates, number of attendees, subjects covered and length of training.
The following personnel must be trained prior to the commencement of any earth-
disturbing or pollutant generating activities:
• Personnel who are responsible for the design, installation, maintenance, and/or repair
of stormwater controls (including pollution prevention measures)
• Personnel responsible for the application and storage of treatment chemicals
• Personnel who are responsible for conducting inspections as required
• Personnel who are responsible for taking corrective actions
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7.0 POLLUTION PREVENTION PLAN CERTIFICATION
I certify under penalty of law that this document and all attachments were prepared under my
direction or supervision in accordance with a system designed to ensure 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: _________________________
Company: _____________________________________________________________
Signature: _________________________ Date: _________________________
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8.0 SUBCONTRACTOR'S CERTIFICATIONS
As a subcontractor, it is required that you comply with this Stormwater Pollution Prevention Plan
(SWPPP) for work that is performed under your supervision. 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 engages 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 BMP’s and
practices described in the SWPPP.
This certification is hereby signed in reference to the above named project:
Company: _________________________
Address: _________________________
_________________________
Telephone: _________________________
Construction Service Provided: ________________________________________________
______________________________________________________________________________
______________________________________________________________________________
Date: _________________________
Signature: _________________________
Title: _________________________
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Company: _________________________
Address: _________________________
_________________________
Telephone: _________________________
Construction Service Provided: ________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
Date: _________________________
Signature: _________________________
Title: _________________________
Company: _________________________
Address: _________________________
_________________________
Telephone: _________________________
Construction Service Provided: ________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
Date: _________________________
Signature: _________________________
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Title: _________________________
Company: _________________________
Address: _________________________
_________________________
Telephone: _________________________
Construction Service Provided: ________________________________________________
______________________________________________________________________________
______________________________________________________________________________
______________________________________________________________________________
Date: _________________________
Signature: _________________________
Title: _________________________
Company: _________________________
Address: _________________________
_________________________
Telephone: _________________________
Construction Service Provided: ________________________________________________
______________________________________________________________________________
______________________________________________________________________________
Date: _________________________
Signature: _________________________
Title: _________________________
LOCUS
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LOCUS
DRAFT
APPENDIX A
Construction Site Inspection Checklist/Report
Wakeby Road Solar Project
810 Wakeby Road Inspection Form
Barnstable, MA ADE #3064.04
1 of 5
WAKEBY ROAD SOLAR PROJECT
810 WAKEBY ROAD
BARNSTABLE, MASSACHUSETTS
CONSTRUCTION SITE INSPECTION CHECKLIST/REPORT
Date: _______________________ Personnel Present: _____________________________
_____________________________________________________________________________
Inspectors Name: ________________________
Inspectors Contact Information: ________________________
Inspectors Signature: ________________________
Type of Inspection: Scheduled Pre-Storm During Storm Post Storm
(circle one) Other: ____________________________________
Date of Report: _______________________
Areas to be inspected:
• Gravel access roads and stabilized
construction entrance
• Erosion control measures
• Outdoor Equipment areas
• Process areas and stockpiles
• Waste storage areas and dumpsters
• Watercourse paths/swales
• Limit of work
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810 Wakeby Road Inspection Form
Barnstable, MA ADE #3064.04
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General Evaluation Checklist:
1. Has there been a storm event since the last inspection?
2. Weather at time of inspection?
3. Is there any evidence of pollution or sediment entering the storm water drainage system or
surrounding wetlands/receiving waters?
4. Is any cleanup of spills, leaks, or refuse needed?
5. Are the engineering controls working effectively to prevent storm water pollution?
6. What, if any, changes to the plans are necessary?
7. Are all erosion control devices in place and functioning in accordance with erosion and control plan?
8. Are all sediment traps, barriers, and basins clean and functioning properly?
9. Are all sediment controls in place at site perimeter and storm inlets?
10. Are all discharge points free of noticeable pollutant discharges?
11. Is sediment, debris, or mud being cleaned from public roads where they intersect with site access
roads?
12. Are all slopes and disturbed areas not actively being worked on properly stabilized?
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810 Wakeby Road Inspection Form
Barnstable, MA ADE #3064.04
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13. Are all temporary stockpiles or construction materials located in approved areas and protected from
erosion?
14. Are dust control measures being appropriately implemented?
15. Are all on site traffic routes, parking, and storage of equipment and supplies restricted to designated
areas?
16. Are all natural resource areas (e.g. streams, wetlands, mature trees, etc.) protected with proper
BMP’s?
17. Is all trash/litter collected and disposed of in properly covered containers?
18. Are washout facilities (e.g. paint, stucco, concrete) available, clearly marked, and maintained?
19. Are vehicle and equipment fueling, cleaning, and maintenance areas free of spills, leaks, or any other
deleterious materials?
20. Are materials that are potential stormwater contaminants stored inside or under a cover?
Items to be Cleaned/Replaced:
DAILY
• Clean the Public Right-of-Way (near the site entrances/exits) of any sediment and debris that has been
tracked, spilled, dropped or washed from the site immediately upon noticing.
• All areas outside of the Limit of Work that are disturbed shall be reconstructed to the cond itions that they
were initially found in prior to construction.
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810 Wakeby Road Inspection Form
Barnstable, MA ADE #3064.04
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WEEKLY
• All erosion and sediment control barriers (sediment logs, hay bales, silt fence, etc.) shall be inspected
weekly, promptly after each major rainfall event and at least daily during prolonged rainfall. Remove
built up sediment and debris from erosion barriers/sediment logs and “silt socks” when accumulation has
reached 50% of the structure height and immediately replace any erosion and sediment control structures
that are damaged. (Additional erosion and sediment control barriers shall be stored onsite.)
• Infiltration basins will be inspected weekly during construction or after a major storm event (>0.25
inches per 2022 CGP) and for the first few months after construction for accumulation of debris.
Thereafter, the detention basin system shall be inspected at least twice per year to ensure it is properly
functioning. Sediment and debris shall be disposed of in accordance with local, state and federal
regulations.
NOTES:
1. The contractor (TBD) shall be responsible for the proper inspection and maintenance of all stormwater
and erosion control facilities until the project construction is completed. The contractor shall clean all
components of the stormwater management system at the completion of construction, immediately prior
to turning over operation and maintenance responsibility to the project proponent.
2. Upon completion of construction, the operation and maintenance of all components of the stormwater
management system will be the responsibility of the owner:
TBD
3. The owner/contractor/facility manager shall file an inspection report with the design engineer and, if
necessary, the Town of Freetown following each site inspection as recommended in the O&M schedule.
Copies of the inspection reports are to be made available to the EPA as required per the 2022 EPA
Construction General Permit. The inspection report shall identify the date of inspection, name and
contact number of responsible party, specific structures inspected, specific maintenance and/or repairs
required and general observations. Any deficiencies noted in the inspection report shall be corrected to
the satisfaction of the above referenced agencies.
4. Disposal of accumulated sediment and hydrocarbons to be in accordance with applicable local, state and
federal guidelines and regulations.
5. There shall be no illicit discharge of any waste or waste water into the stormwater management system.
The maintenance of the facility shall be undertaken in such a manner as to prevent any discharge of
waste or waste water into stormwater management system. Any waste products generated during
maintenance shall be properly disposed of off-site.
Wakeby Road Solar Project
810 Wakeby Road Inspection Form
Barnstable, MA ADE #3064.04
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ITEMS
INSPECTED
LOCATION COMMENTS, CORRECTIVE ACTION NEEDED, AND NOTES
APPENDIX B
Corrective Action Log Sheet
WAKEBY ROAD SOLAR PROJECT
810 WAKEBY ROAD
BARNSTABLE, MASSACHUSETTS
NPDES CONSTRUCTION GENERAL PERMIT
CORRECTIVE ACTION LOG SHEET
Inspection Date Inspector Name BMP Location Description of BMP Deficiency Corrective Action Needed
and Responsible Party
Corrective Action
Taken
APPENDIX C
SWPPP Amendment Log Sheet
WAKEBY ROAD SOLAR PROJECT
810 WAKEBY ROAD
BARNSTABLE, MASSACHUSETTS
NPDES CONSTRUCTION GENERAL PERMIT
AMENDMENT LOG SHEET
Amendment No. Description of the Amendment Date of
Amendment
Amendment Prepared by
[Name(s) and Title]
APPENDIX D
Stormwater Pollution Training Log
WAKEBY ROAD SOLAR PROJECT
810 WAKEBY ROAD
BARNSTABLE, MASSACHUSETTS
NPDES CONSTRUCTION GENERAL PERMIT
STORMWATER POLLUTION TRAINING LOG
Instructors Name: Training Topic:
_____________________________ ______________________________
_____________________________ ______________________________
Course Location: ______________________________
_____________________________
Date: Training Objectives:
_____________________________ _______________________________
_______________________________
_______________________________
No. Name of Attendee Name of Company
1.
2.
3.
4.
5.
6.
7.
8.
APPENDIX E
Delegation of Authority
WAKEBY ROAD SOLAR PROJECT
810 WAKEBY ROAD
BARNSTABLE, MASSACHUSETTS
STORM WATER POLLUTION PREVENTION PLAN
NPDES CONSTRUCTION GENERAL PERMIT
DELEGATION OF AUTHORITY
I, _____________________________ (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
above 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: _______________________ Phone: _______________________
Position: _______________________ Address: _______________________
Company: _______________________ _______________________
By signing this authorization, I confirm that I meet the requirements to make such a designation
as outlined within the EPA’s Construction General Permit (CGP), and that the designee above
meets the definition of a “duly authorized representative” as set forth in the EPA’s CGP.
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: _______________________
Company: _______________________
Title: _______________________
Date: _______________________
Signature: _______________________
APPENDIX F
Location and Details of BMP and Erosion Control Measures
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