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STORM DRAINAGE OPERATIONS& MAINTENANCE MANUAL AUGUST 18,2023 <br /> 28T" PLACE INDUSTRIAL 3 <br /> GENERAL GUIDELINES <br /> General guidelines and items not part of the DOE Manual standard maintenance are listed here. <br /> General: <br /> 1. Proper maintenance of public and private stormwater facilities is necessary to ensure <br /> they serve their intended function. <br /> 2. Drainage systems shall be inspected at least annually. A representative of the local <br /> government should also inspect private facilities at least annually to ensure compliance <br /> by the owner of the following maintenance requirements. Annual maintenance shall be <br /> increased in frequency if conditions warrant. <br /> 3. Any deterioration threatening the structural integrity of the facilities shall be immediately <br /> repaired. <br /> 4. Warning signs (e.g. "Dump No Waste - Drains to Puget Sound") shall be painted or <br /> embossed on or adjacent to all storm drain inlets. They shall be repainted as needed. <br /> 5. Parking lots shall be swept when necessary to remove debris. <br /> DOE MAINTENANCE GUIDELINES <br /> The DOE Manual maintenance requirements for the following items in Volume V (V-4.6) are <br /> attached in Appendix A: <br /> • Catch basins <br /> • Compost Amended Vegetative Filter Strip <br /> • Debris Barriers <br /> • Energy Dissipaters <br /> • Contech Maintenance Standards <br /> DWH/srm <br />