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CITY OF EVERETT STORMWATER MANAGEMENT MANUAL <br />Date <br />Drainage <br />System Maintenance Activities and Conditions <br />Frequency Feature ✓✓✓✓ Problem Conditions to Check For That Should Exist <br />A Manhole Locking Mechanism cannot be opened by one Mechanism opens with proper to�ls. <br />Mechanism Not maintenance person with proper tools. Bolts into <br />Woricing frame have less than one-half inch of thread <br />(may not apply to self-locking lids). <br />A Manhole Cover Difficult to One maintenance person cannot remove lid Cover can be removed and reinstalled by <br />Remove after applying normal lifting pressure. Intent is to one maintenance person. <br />keep cover from sealing off access to <br />maintenance. <br />A Manhole Ladder Rungs Ladder is unsafe due to missing rungs, Ladder meets design standards. Allows <br />Unsafe misalignment, rtot securely attached to structure maintenance person safe access. <br />wall, rust, or cracks. <br />If you are unsure whether a problem exists, please contact a professional engineer. <br />Tanks and vaults are a confined space. Visual inspections should be performed aboveground. If entry is required it should be performed by <br />qua{ified personnel. <br />�� <br />{M) Month{y from Octobe� through April. <br />{A) Once in late summer (preferably September). <br />(S) After any maaar storm (use 1 inch in 24 hours as a guidefine). <br />Appendices <br />F-91 <br />