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<br />CITY OF SUNNY ISLES BEACH SECTION 02761 - 2 <br />CLEANING STORM SEWER SYSTEMS <br /> <br />B. High-Velocity Jet (Hydro-Cleaning) Equipment: All high-velocity sanitary storm <br />cleaning equipment shall be constructed for ease and safety of operation. The <br />equipment shall have a selection of 2 or more high-velocity nozzles. The nozzles shall <br />be capable of producing a scouring action from 15° to 45° (degrees) in all size mains. <br />Equipment shall also include a high-velocity gun for washing and scouring manhole <br />walls and floor. The gun shall be capable of producing flows from a fine spray to <br />a solid stream. The equipment shall carry its own water tanks, auxiliary engines, <br />pumps, and hydraulically driven hose reel. <br /> <br />C. Mechanically Powered Equipment: Bucket machines shall be in pairs with sufficient <br />power to perform the Work in an efficient manner. Machines shall be belt operated or <br />have an overload device. Machines with direct drive that could cause damage to the <br />pipe will not be used. A power rodding machine shall be either a sectional or <br />continuous rod type capable of holding a minimum of 750-feet of rod. The rod shall be <br />heat-treated steel. To ensure safe operation, the machine shall be fully enclosed and <br />have an automatic safety clutch or relief valve. <br /> <br />D. Vacuum machines may be used for removal of materials from manholes when other <br />cleaning equipment is used to dislodge and transport material to the access point. <br /> <br />E. Combination Cleaner: For cleaning small and large diameter PIPE, the Contractor <br />may use a combination hydraulic high volume water and solids separation system. <br />Water volume of up to 250-gpm at or above 2,000-psi will move solids to the <br />downstream manhole in high flow conditions. The separation system will dewater <br />solids to 95 % (passing a paint filter test) and transfer them to a dump truck, if needed, <br />for transport to a water reclamation facility, approved landfill, or other location <br />specified by the Owner or designee. Wash water will be filtered to a point where it can <br />be used in the pump for continuous cleaning. No bypassing of storm flows will be <br />necessary. The unit shall be capable of 24-hour operation and the unit shall not leave <br />the manhole until a section is fully cleaned. <br /> <br />1.3 SHOP DRAWINGS AND SUBMITTALS <br /> <br />A. Submittals shall be submitted to the Owner for review and acceptance prior to <br />construction in accordance with the General Requirements Section 00500 and <br />Submittals Section 01300. <br /> <br />B. A daily log shall be maintained to record the location of the manholes and storm lines, <br />lengths of the lines cleaned, method of cleaning, line sizes, identify type of cleaning <br />(light, medium, or heavy), and type of debris moved. Observations are to be recorded <br />on a cleaning report form.