J_2024 05 09_West Orange Stormwater Management Plan

Preventative and Corrective Maintenance Action Plan As per N.J.A.C. 7:8-5.8(b) & (e), 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. The maintenance of access points to the stormwater management measures shall be 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 measures via provided gravel paths outside of the station perimeter walls to allow for the inspection and control of mosquito breeding. Preventative Maintenance Actions The frequency of the preventative maintenance actions listed here is adopted from Chapter 9, BMP Manual of Structural Stormwater Management Measures. Design engineer and responsible party should adjust the frequency of preventative maintenance actions according to the situations of the stormwater management measures in the development. Frequency Preventative Maintenance Actions Quarterly Sediment, trash and debris removal, inspecting of manholes and Outlet Control Structures and associated grates/screens/ trash racks. Vegetation quality inspection (one per growing and one per non-growing seasons); Inspection of planting bed (twice a year); Basic Structural Inspection; Cleaning and verifying Infiltration Rate; Vegetation erosion, scour and unwanted growth inspection Debris and sediment inspections after every 1” or greater rain event; trimming. SemiAnnually Annual Unscheduled March 2024 Stormwater Measures/ No. Bioretention System with Underdrains Bioretention System with Underdrains Bioretention System with Underdrains Bioretention System with Underdrains Stormwater Management Measures Maintenance Plan & Field Manuals Page 5