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GITY OF EVERETT STORMWATER MANAGEMENT MANUAL <br />Date <br />Drainage <br />System Maintenance Activities and Conditions <br />Freyuency Feature ✓✓✓✓ Prohlem Conditions to Check For That Should Exist <br />A Manhole Locking Mechanism cannot be opened by one Mechanism opans with proper tools. <br />Mechanism Not maintenance person with proper tools. Bolts into <br />Working frame have less than one-half inch of ttiread <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 reinstafled by <br />Remove after applying narmal lifting pressure. Intent is to one maintenance person. <br />keep cover from sealing ofF access to <br />mainienance. <br />A Manhale Ladder Rungs Ladder is unsafe due to missing rungs, Ladder meets design standards. Allows <br />Unsafe misalignment, not securely attached to structure maintenance person safe access. <br />wall, rust, or cracE�s. <br />If you are unsure whether a problem exists, please contact a professional engineer. <br />Control structures are usually considered a confined space. Visual inspectians should be performed aboveground. If entry is required it should be <br />performed by 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 />Appendices <br />F-13 <br />