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Manhole Preventative Maintenance 60 FTE labor hours required, 3 FTEs required, medium priority. <br />Add mud manhole adjusting rings for the structures listed below. <br />• MH 12-007 rated 3 <br />• MH 12-006 rated 3 <br />• MH 12-017 rated 3 <br />Manhole Inflow and Infiltration (I&I) <br />I&I has been identified within the manholes listed below, which are located on the east side of State <br />Highway 10. The ditch south of Highway 96 is usually very wet. The City Engineer will review options to <br />seal the structures. A few potential solutions include grouting, epoxy coatings, excavate and wrap/seal <br />from the outside of the structure. <br />• MH A-244 <br />• MH A-243 <br />• MH A-242 <br />• MH A-241 <br />Other candidates for MH sealing without excavation are: <br />• MH 2-030 (seal structure joints) rated 4 <br />• MH 2-001- rated 4 <br />• MH 2-013- rated 4 <br />• MH 2-014 - rated 4 <br />• M H 5-056 — rated 4 <br />• M H 5-055 — rated 4 <br />• M H 5-054 — rated 4 <br />• MH 5-053 — rated 4 <br />• MH 2-129 — rated 4 <br />Structures with Tree Root Intrusion 30 FTE labor hours required; 3 FTEs required High Priority. <br />Can be chemically treated and roots removed. The list below should also be added to the manholes that <br />need to be sealed due to I&I. <br />• MH 2-101 rated 4 <br />• MH 12-010 rated 4 <br />• MH A-211 (minor roots in MH) <br />• MH 13-032 <br />