7.2 Operation and Maintenance Requirements

This section outlines the maintenance responsibilities, activities and frequencies; regulations for disposal of waste resulting from maintenance activities; and requirements for maintenance of plat BMPs during home building.

7.2.1 Responsibility for Maintenance

Property owners are responsible for the maintenance, operation, or repair of stormwater drainage systems and BMPs, including conveyance, On-Site Stormwater Management, Flow Control, and Treatment BMPs. Property owners shall maintain, operate, and repair these BMPs in compliance with the requirements of Title 12 KCC and with the requirements of this manual.

7.2.2 Maintenance Activities and Frequencies

Required maintenance activities, including inspection and maintenance frequencies, are provided in the following reference documents:

  • Stormwater Management Manual for Western Washington (Ecology Manual) by the Washington State Department of Ecology Water Quality Program, July 2019.

  • Western Washington Low Impact Development (LID) Operations and Maintenance (O&M), by the Washington State Department of Ecology Water Quality Program, May 2013.

  • Kitsap Low Impact Development Guidance Manual Appendix C checklists (Kitsap Home Builders Foundation 2009).

Stormwater BMPs shall be inspected and maintained routinely and cleared of debris, sediment, and vegetation when the functioning and/or design capacity of the BMP is affected. Where lack of maintenance is causing or contributing to a water quality problem, immediate action shall be taken to correct the problem.

7.2.3 Disposal of Waste from Maintenance Activities

Disposal of waste from stormwater maintenance activities shall be conducted in accordance with Kitsap County Board of Health Ordinance 2004‑2, Solid Waste Regulations, as now or hereafter amended, that adopts the Solid Waste Handling Standards in Chapter 173‑350 WAC and where appropriate, the Dangerous Waste Regulations, Chapter 173‑303 WAC.

7.2.4 Maintenance of Plat BMPs During Home Building

The responsibility for maintenance of a residential plat is outlined in KCC 12.12.060 (for publicly maintained plats) and in KCC 12.24.020 (for privately maintained plats). The responsible party shall maintain the stormwater BMPs as required by this manual. These BMPs shall be inspected by Kitsap County at least once every 6 months during home construction to ensure maintenance is conducted during the 2‑year bonding period.