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CITY OF EVERETT STORMWATER MANAGEMENT MANUAL <br /> Date <br /> Drainage <br /> System Maintenance Activities and Conditions <br /> Frequency Feature 1 1 1 1 Problem Conditions to Check For That Should Exist <br /> A Manhole Locking Mechanism cannot be opened by one Mechanism opens with proper tools. <br /> maintenance person with proper tools.Bolts <br /> Mechanism Not into frame have less than one-half inch of <br /> Working thread(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 <br /> Remove after applying normal lifting pressure. Intent is by one maintenance person. <br /> to 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,not securely attached to maintenance person safe access. <br /> structure 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 /> qualified personnel. <br /> Key: <br /> (M) Monthly from October through April. <br /> (A)Once in late summer(preferably September). <br /> (S)After any major storm (use 1 inch in 24 hours as a guideline). <br />