Operations and Maintenance

Stormwater Operations and Maintenance Plan

Since its initial issuance in 2009, the NPDES Phase 2 Municipal Stormwater Permit has required the development and implementation of an Operations and Maintenance Plan that addresses how municipal activities are conducted and identifies ways to minimize their potential impact to stormwater discharges.  O&M Plan requirements are found in Permit section S5.B.6, “Pollution Prevention and Good Housekeeping for Municipal Operations.”  The County’s Operations and Maintenance Plan was updated in 2022 and may be viewed below.


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Spokane County 
Municipal Operations and Maintenance Plan