Stormwater Maintenance Plan and Field Manual 01282026 4932 5213 7869 v2

Stormwater Maintenance Plan for 525 Northfield Avenue, Lot 1.01, Block 159.04 Township of West Orange, Essex County, New Jersey Jarmel Kizel Project No. Gomesgr24-223 January 28, 2026 D. Description of Stormwater Management Measures Storm Sewer Collection System Design storm: - Design Purposes: o 100-year storm - Dimensions: 12” & 15” HDPP and 72” Concrete Culvert E. Preventative and Corrective Maintenance Action Plan Preventative and corrective maintenance shall be performed to maintain the function of the stormwater management measure, including, but not limited to, repairs or replacement to the structure; removal of sediment, debris, or trash; restoration of eroded areas; snow and ice removal; fence repair or replacement; restoration of vegetation; and repair or replacement of non-vegetated linings. Maintenance plans should include specific preventative and corrective maintenance tasks such as removal of sediment, trash, and debris; mowing, pruning, and restoration of vegetation; restoration of eroded areas; elimination of mosquito breeding habitats; control of aquatic vegetation; and repair or replacement of damaged or deteriorated components. The maintenance plan should address the maintenance of access points to the stormwater management measures in accordance with the following: - all components of the stormwater management measures must be readily accessible for inspection and maintenance. - trees, shrubs, and underbrush must be pruned or trimmed as necessary to maintain access to the stormwater management measure via roadways, paths, and ramps, including paths through perimeter vegetation to permanent pools, aquatic benches, and safety ledges to allow for the inspection and control of mosquito breeding; and - the exact limits of inspection and maintenance easements and rights-of- way should be specified on stormwater management measure plans and included in the maintenance plan.