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7 <br /> APPENDIX A <br /> MUNICIPAL ROAD AND STREET SERVICES <br /> Snohomish County- Road Maintenance Division <br /> Work Operations <br /> (Estimates provided on a per project basis) <br /> Drainage: <br /> • Catch Basin Routine Maintenance: Manually clean catch basins to ensure drainage <br /> flow is not restricted. This includes removing debris from the inlet and/or cleaning the <br /> catch portion of the structure. <br /> • Catch Basin Mechanical Cleaning: Mechanically remove sediment and debris from the <br /> catch basin using a vactor or eductor truck using vacuum hose and water jet as necessary <br /> to ensure drainage system remains free of material and flows are not restricted. <br /> • Culvert Cleaning, and Inspection, Manual: Inspecting and manually cleaning culvert <br /> inlets and outlets. <br /> • Culvert Cleaning, Mechanical: Use mechanical equipment for cleaning the culvert such <br /> as vactor,flusher or a backhoe to clean inlets and outfalls to remove obstructions. <br /> • Detention/Retention Basin Maintenance: Remove accumulated sediment,vegetation <br /> and debris from detention/retention basins to maintain design capacity to allow for <br /> proper function of the structure. Removal may be by manual or mechanical means and <br /> may include cleaning inlet and outlet grates/pipes. <br /> • Ditch Maintenance: Cleaning or re-shaping a man-made, open, storm water <br /> conveyance system that was constructed to carry storm water onto,through, or away <br /> from the highway right-of-way(i.e., not a modified stream). This operation does not <br /> include the acquisition of any permitting if required. <br /> • Underground Retention/Detention Facility Maintenance: Mechanically or manually <br /> clean and/or inspect underground detention/retention facilities on the right of way to <br /> maintain proper design capacity for the structure. This activity requires compliance with <br /> confined space regulations. <br /> Pavement Maintenance and Repair: <br /> • Crack and Joint Sealing: Repair defects in pavement surface by installing crack filling <br /> material to prevent water from entering the sub-grade. Cracks are cleaned and routed <br /> prior to filling. <br /> • Install Lane Markers/Raised Pavement Markers: Install lane markers to replace worn <br /> markers or to facilitate design changes in the channelization. <br /> A-1 <br /> 73 <br />