MAINTENANCE AGREEMENT 6-1-16New Hanover County St water
Qllf'TASIsl[1 and Maintenance Plan Schedide & Agreement
Detention / Retention / Infiltration / Pipe / Swale Facilities
As a minimum the following maintenance items shall be performed:
1. Grassing around any detention/retention facility shall be maintained to prevent the erosion
of these areas. The areas shall be periodically, approximately once every ? months,
mowed to maintain the aesthetic quality of the site and to prevent erosion and a reduction in
capacity of the stormwater system. Grass on slopes shall not exceed a height of 15 inches.
2. Open ditches and swales, approximately once every 1 months, shall be kept free of
undesirable growth and mowed or maintained to the design cross-section and area as shown
on the Stormwater Management Plan acceptable to the County and on file in the office of
the County Engineer. Growth on the slopes and bottom shall not exceed a height of 8
inches.
3. Landscaping of the area around the detention/retention facility shall not reduce the capacity
or hinder operation and maintenance of the stormwater system. Landscaping shall be
maintained.
4. Storm drainage pipes and culverts shall be periodically, approximately once every. 1?
months, inspected for debris and sand build-up. They shall be cleaned as necessary to
provide for the free conveyance of stormwater as designed.
5. The detention/retention facility shall be maintained at the design depth as shown on the
Stormwater Management Plan accepted by the County and on file in the office of the
County Engineer. The detention/retention facility shall be routinely checked, approximately
once every 6 months, for and cleared of all accumulation of debris and sediment/sand
build-up. The facility shall be inspected on a regular basis, but at least once every six
months. Debris and sedimentation shall be removed if:
a. The primary outlet capacity is impaired or clogged and/or
b. The depth of the facility is more than one foot above the original facility depth or
the facility volume is reduced by 25% of the design impoundment volume.
6. Pipe installed to provide detention shall be kept free of sediment build-up. The detention
facility shall be maintained in accordance with the Stormwater Management Plan accepted by
the County and on file in the office of the County Engineer. The storm drainage pipes and
structures shall be periodically, approximately once every 6 months, inspected for debris
and sediment build-up. The pipe shall be inspected on a regular basis, but at least once every
six months. Debris and sedimentation shall be removed if:
a. The storage volume is reduced by 25% or more, and/or;
b. The sediment and/or debris restricts the free flow of stormwater.
7. The pipes and stone installed to provide infiltration shall be kept free of sediment build-up.
The infiltration system shall be maintained in accordance with the Stormwater Management
Plan accepted by the County and on file in the office of the County Engineer. The
infiltration facility shall be routinely, approximately once every 6 months, inspected for
and cleared of all accumulation of debris and the detention facility outlet structure cleared of
any blockage. The facility shall be inspected on a regular basis, but at least once every six
months. Debris and sedimentation shall be removed if:
a. The infiltration capacity is impaired, and/or;
b. The sediment and/or debris restricts the free flow of stormwater into the infiltration
system and surrounding soils.
8. The infiltration system shall be removed and replaced with new material when the system no
longer permits the stormwater to freely infiltrate into the surrounding soils by proper
maintenance.
I acknowledge and agree by my signature below that I am responsible for the performance and
maintenance procedures listed above. I agree to notify New Hanover Count of any problems with
the system and prior to any changes to the system, or the change of responsible party.
Print Name: Edward H . Clark
Title:
Manager, Bill Clark Homes of Wilmington, LLC
127 Racine Drive, Suite 201 Wilmington, NC 28403
Address:
Phone: 910-355-1744
Date: June , 2016
Signature: i
a Notary Public for the State of V;C'Ah ,
County of 1,3 Aa�ck� L\/' _do hereby certify that LJ personally
appeared before me this 3i day of :Ku(\L , 20 �, and acknowledge the due execution of the
foregoing maintenance agreement requirements.
Witness my hand and official seal,
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My commission expires: ram
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