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POST CONSTRUCTION
OPERATION AND MAINTENANCE PLAN
28 SOUTH SHORE DRIVE,
YARMOUTH, MA
RED JACKET RESORT
Prepared by:
260 Cranberry Highway
Orleans, MA 02653
May 18, 2023
Prepared by DAV
Best Management Practices (BMPs) pursuant to the MA DEP Wetlands Protection Act,
Wellesley Wetlands Protection Bylaw and accepted design practice have been implemented
and utilized for the project. The following information provided is to be used as a guideline
for monitoring and maintaining the performance of the drainage facilities constructed as part
of the site development. The structural Best Management Practices (BMPs) shall be
inspected during rainfall conditions during the first year of operation to verify functionality.
Responsible Party
RJ Resort Holdings, LLC
444 Maddison Ave #14
New York, NY 10022
Town of Yarmouth Contact Information:
Yarmouth Conservation Commission
Brittany DiRienzo, Conservation Agent
1146 Route 28, South Yarmouth, MA 02664
Phone: 508-398-2231, Ext. 1288
Yarmouth Department of Public Works – Engineering Division
Amanda Lima, P.E., Town Engineer
74 Town Brook Road
West Yarmouth, MA 02673
Phone: 508-398-2231 ext. 1250
Applied Stormwater Best Management Practices
The proposed stormwater management system consists of three subsurface infiltration
systems collecting runoff from the existing roof and new pool patio. The systems are
designed such that the bottom of the chambers are at least 2 feett above estimated
seasonal high groundwater. See Plans prepared by coastal engineering for location and size
of infiltration systems.
The first infiltration system is used to treat only the clean roof runoff for the left most hotel
closest to parker river. The bottom of the system is set at elevation 4.5 (2 ft above high
groundwater). The minimum elevation was used due to the pre-existing site topography.
Raising the grade is impractical as the sheet pile walls, building floor elevations, and ADA
walkways are constraints for the proposed finish grade. The roofed system needed to be
split into two components due to the length of pipe needed for a pitch that would work with
the chamber depth, as well as trying to maintain the system to be 100’ away from the
resource area buffer zones. The leaching basin consists of 18 R280 HD Cultec units that
have 12” of stone on all sides, and 6” of stone above and below the units. The total system
length is 45 ft, the width is 14.75ft, and the depth is 3.21 ft. The bottom of the system is set
at el. 4.5 and the top of system is set at el. 7.71. The system will have a 10” overflow pipe
that will discharge stormwater events greater than the 25-year event by the seawall.
The second infiltration system is used to treat only the clean roof runoff for the right most
hotel closest to South Shore Drive. The bottom of the system is set at elevation 4.5 (2 ft
above high groundwater) for the same reason as system 1. The leaching basin consists of 14
R280 HD Cultec units that have 12” of stone on all sides, and 6” of stone above and below
the units. The total system length is 52 ft, the width is 10.33 ft, and the depth is 3.21 ft. The
bottom of the system is set at el. 4.5 and the top of system is set at el. 7.71. The system will
have a 10” overflow pipe that will discharge stormwater events greater than the 25-year
event by the seawall.
The third infiltration system is used to treat the runoff for the pool patio. The patio will have
a trench drain that is connected to an 8” pipe that will connect to a 4 ft diameter drain
manhole with a 4 ft sump, prior to infiltrating using the Cultec system. The bottom of system
is set at elevation 4.5 (2 ft above high groundwater) for the same reason as system 1 and 2.
The leaching basin consists of 15 R280 HD Cultec units that have 12” of stone on all sides,
and 6” of stone above and below the units. The total system length is 38 ft, the width is
14.75 ft, and the depth is 3.21 ft. The bottom of the system is set at el. 4.5 and the top of
system is set at el. 7.71. The system will have a 10” overflow pipe that will discharge
stormwater events greater than the 25-year event by the seawall.
Other Study points were not evaluated as they have not been altered.
Infiltration Systems – Each infiltration system consists Cultec R280HD leaching
chambers set in a bed of double-washed, crushed stone. The total storage volume of each
system is approximately 1,322 cf, 1,035sf, and 1,103 respectively. An infiltration rate of 17.75
inches per hour was used in modeling this system based upon the in situ soil testing done
by McArdle Gannon Associates in accordance with the DEP Stormwater Management
Regulations and standard practice.
Maintenance
1. Infiltration Systems – Proper maintenance of the subsurface infiltration system is
essential to the long-term effectiveness of the infiltration function. The subsurface
infiltration system shall have inspection ports and additional inspections should be
scheduled during the first few months to ensure proper stabilization and function.
Thereafter, they shall be checked semiannually and following heavy rainfalls, defined
as a 1-year storm event exceeding 2.5 inches of rainfall within a twenty-four-hour
period. Water levels in the chambers shall be checked to verify proper drainage.
Ponding water in a chamber indicates failure from the bottom. If water remains within
the chambers after 48-hours following a storm event, steps to restore the infiltration
function shall be taken, as directed by a qualified stormwater management
professional. To rectify the problem, accumulated sediment must be removed from
the bottom of the chamber. The stone aggregate and filter fabric must be removed
and replaced, and the underlying soil layer must be scarified to encourage proper
infiltration. Material removed from the system shall be disposed of in accordance with
all applicable local, state, and federal regulations. Please refer to the Manufacturer’s
Manual for additional detail on proper inspection and maintenance of the ACF-R Tank
chambers. Cost: The property owner should consult local landscape contractors for a
detailed cost estimate.
2. Pesticides, Herbicides and Fertilizers: - Pesticides and herbicides shall not be used on
the property. In addition, fertilizers that are used on the property shall be utilized
sparingly and should be restricted to the use of organic fertilizers only
Long Term Pollution Prevention Plan
Storage and disposal of Waste and Toxics:
Failure to properly store hazardous materials dramatically increases the probability
that they will end up in local waterways. Practices such as covering hazardous
materials or even storing them properly, can have dramatic impacts.
The exterior storage of hazardous materials on site shall be prohibited. The following
is a list of management considerations for hazardous materials as outlined by the
EPA:
Ensuring sufficient aisle space to provide access for inspections and to
improve the ease of material transport; Post-Development Best Management
Practices Operation and Maintenance Plan Wellesley Square Residences,
Delanson Circle, Wellesley, MA Page 5 of 6
Storing materials well away from high-traffic areas to reduce the likelihood of
accidents that might cause spills or damage to drums, bags, or containers.
Stacking containers in accordance with the manufacturers' directions to avoid
damaging the container or the product itself;
Storing containers on pallets or equivalent structures. This facilitates
inspection for leaks and prevents the containers from coming into contact with
wet floors, which can cause corrosion. This consideration also reduces the
incidence of damage by pests.
Landscape Maintenance:
Using proper landscaping techniques can effectively increase the value of a property
while benefiting the environment. These practices can benefit the environment by
reducing water use; decreasing energy use (because less water pumping and
treatment is required); minimizing runoff of storm and irrigation water that transports
soils, fertilizers, and pesticides; and creating additional habitat for plants and wildlife.
The following lawn and landscaping management practices will be encouraged:
Mow lawn areas at the highest recommended height.
Minimize lawn size and maintain existing native vegetation.
Abide by water restrictions and other conservation measures implemented by
the Town of Wellesley.
Water only when necessary.
Use automatic irrigation systems to reduce water use.
Vehicle Washing:
This management measure involves educating the general public on the water quality
impacts of the outdoor washing of automobiles and how to avoid allowing polluted
runoff to enter the storm drain system. Outdoor car washing has the potential to
result in high loads of nutrients, metals, and hydrocarbons during dry weather
conditions in many watersheds, as the detergent-rich water used to wash the grime
off our cars flows down the street and into the storm drain. The following
management practices will be encouraged:
Washing cars on gravel, grass, or other permeable surfaces.
Blocking off the storm drain during car washing and redirecting wash water
onto grass or landscaping to provide filtration.
Using hoses with nozzles that automatically turn off when left unattended.
Using only biodegradable soaps.
Minimize the amounts of soap and water used. Wash cars less frequently.
Promote use of commercial car wash services.
Stormwater Inspection Worksheet
General Information
Site Information
Name Address
Contact Name Telephone Number
Facility Type (residential, commercial, etc…)
Owner Information
Name Address
Contact Name Telephone Number
Inspection
Inspector Info
Name Address
Contact Name Telephone Number
Facility Type (residential, commercial, etc…)
Owner Information
Name Address
Contact Name Telephone Number
Date of inspection Time of Inspection
Drainage BPM’s
BPM -
Type Location
Notes:
Action Needed:
Drainage BPM’s
BPM -
Type Location
Notes:
Action Needed:
Summary of Inspection
Name of Inspector
Signature
Date
Stormwater Operations and Inspection Log
Site Address:
Owners:
Operator:
Inspection Date Time Description of inspection Inspector
Stormwater Amendment Log
Site Address:
Owners:
Amendment # Date Description of Amendment Amended by