10.26.2021-SBN-Standards-Manufacturer-Additions-Minor-Revisions-final

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SECTION 4 – SANITARY 52 4-3.2 (c) TEMPORARY BY-PASS PUMPING 1.) Under no circumstances shall the flow be interrupted or stopped such that damage is done to either private or public property; or sewage flows or overflows into a storm sewer or natural waterway. All pumps shall be fully automatic self-priming units of either diesel or electric with necessary start/stop controls for each pump. A redundant backup pump shall be on-line, isolated from the primary pump system by a valve. An additional stand-by pump of each size shall be maintained on-site and not connected. A qualified person shall monitor the pumps, piping, and all equipment constituting the bypass pumping system, on-site, at all times, twenty- four (24) hours/ seven (7) days per week during the bypass system operation. Personnel must also inspect the bypass pumping system every two (2) hours, at minimum, to ensure proper operation. All piping, joints, and accessories shall be designed to withstand the maximum bypass system pressure or a minimum of fifty (50) psi, whichever is greater. During bypass pumping, no sewage shall be leaked, dumped, or spilled in or onto any area outside of the existing sanitary sewer system. When bypass pumping operations are complete, all piping shall be drained and flushed into the sanitary sewer prior to disassembly. 2.) Equipment shall have proper maintenance to ensure noise is kept to a minimum. All motorized equipment will be required to have mufflers constructed in accordance with the equipment manufacturer’s specifications or a system of equivalent noise reducing capacity. Exhaust systems shall be maintained in good operating condition, free from leaks and holes. Any equipment utilizing diesel engines must be sound attenuated. “Quiet Pumps” with sound attenuated enclosures shall be provided. The equipment noise level shall not exceed ninety- five (95) dB and shall be eighty (80) dB or less at twenty (20) feet measured on the A-scale of a standard sound level meter at slow speed. A spill containment system (minimum size equal to the fuel tank volume) shall be provided. 3.) If any sewage – liquid or solid – is spilled, discharged or leaked, or otherwise deposited to the open environment as a result of bypass operations, immediately notify the City Engineer. Cleanup procedures and other measures as part of the submitted Sewer Spill Response Plan shall be implemented immediately. Comply with all Local, State, and Federal regulatory requirements regarding spills. Improper disposal of liquids and solids removed from sewers may be subject to fines by regulatory agencies and civil and/or criminal penalties from improper disposal of removed materials under the law. 4.) Locate bypass pumping lines so as to not cause undue interference with the use of streets, private driveways, and alleys; to include the possible temporary trenching of bypass pumping or crossing road ramps at critical intersections. If crossing road ramps are used, then channelization drums with low intensity steady burn light – Type D and flashing arrow displays will be required. Multiple ramps employed together for multi-lane applications shall require use of channelization devices to prevent lane changes in advance of ramps. All traffic control measures shall be approved prior to execution. Permanent pavement section (patching) where bypass pumping is trenched shall be in accordance with the City Standards. Bypass pumping operations across multi-lane roadways shall provide for the same through lane configuration. Ramps, where used, shall provide longitudinal grade transitions across using cold mix asphalt in accordance with INDOT Standard Specifications Section 403. Bypass pumping operations in effect during the winter or snow season shall not hinder or adversely affect snow remo val