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HomeMy WebLinkAbout013 - C-6 - TEMP BYPASS PLANEGISSPPBPBPBPNGSESDWSWWWWWWWWWWWWWWW15S15S15S15S15S15S15S15SBPBPBPBPBPBPBPBPBPBPBPBPBPBPBPBPBPBPS S S S S S S SSSSSSSSSS S S S S S SFM FMFMFMFMXXXXXXX2025COPYRIGHT © MORRISON-MAIERLE,SHEET NUMBERPROJECT NUMBERDRAWING NUMBERDATEDESCRIPTIONNO.BYP:\10678-LAUREL PARKWAY LLC\001 - NORTON RANCH LIFT STATION\ACAD\SHEETS\1-CIVIL\C-4_TEMPORARYBYPASSPLAN.DWGREVISIONS DRAWN BY:DSGN. BY:APPR. BY:DATE:Q.C. REVIEWDATE:BY:2880 Technology Blvd WestBozeman, MT 59718406.587.0721www.m-m.netengineers surveyors planners scientistsMorrisonMaierleVERIFY SCALE AND COLOR!THIS SHEET MAY BE REDUCED AND ISINTENDED TO BE IN COLOR. THE BARBELOW WILL MEASURE ONE INCH ATORIGINAL DESIGN SCALE AND RED,GREEN, AND BLUE WILL BE VISIBLE IFREPRODUCED CORRECTLY.MODIFY SCALE ACCORDINGLY!PLOTTED BY:LEE HAGEMAN ON Jun/04/2025 NORTON RANCH LIFT STATION UPGRADES BOZEMANMONTANATEMPORARY BYPASS PLAN10678.00113C-6KJSLRHLRH06/2025 408020400SCALE IN FEETAGENCY REVIEW (REVISION 2)JUNE 2025GENERAL TEMPORARY BYPASS PUMPING NOTES1.CONTRACTOR SHALL SUBMIT A TEMPORARY BYPASS PUMPING PLAN TO THE OWNER/ENGINEER REVIEW AND APPROVAL NO LATER THAN 21 DAYS PRIOR TOBYPASS PUMPING OPERATIONS, AND THE PLAN SHALL BE APPROVED BY THE CITY OF BOZEMAN. THE PLAN MUST ALLOW THE ENTIRE LIFT STATION TO BEOFFLINE FOR THE TOTAL ESTIMATED TIME TO COMPLETE THE ACTIVATION OF THE NEW WET WELL, MANIFOLD, AND CONTROLS. THE SUBMITTAL SHALLINCLUDE THE FOLLOWING, AT MINIMUM. ADDITIONAL REQUIREMENTS ARE SPECIFIED IN PART 1.08 OF SPECIFICATION SECTION 01 14 16.1.1.LISTING OF EQUIPMENT (BYPASS PUMP SIZES, CAPACITIES, NUMBER, BYPASS PIPELINE SIZE AND MATERIAL TYPES).1.2.DRAWING OF PLUG AND BYPASS PUMP/PIPELINE LOCATION.1.3.OPERATION PLAN.2.THE TEMPORARY BYPASS PUMPING SYSTEM SHALL BE CAPABLE OF OPERATING AT THE MAXIMUM FLOW RATE WITH THE LARGEST PUMP OUT OF SERVICE.2.1.ESTIMATED MAXMIMUM FLOW IS 122 GPM BASED ON EVALUATION OF EXISTING SYSTEM DATA. TOTAL DYNAMIC HEAD VARIES BASED ON PUMP SUCTIONAND DISCHARGE LOCATIONS AND DICHARGE PIPE SIZE. SEE THE PLAN FOR APPROXIMATE INVERTS AT PROPOSED SUCTION AND DISCHARGEMANHOLES.3.CONTRACTOR SHALL BE RESPONSIBLE FOR INSTALLING AND OPERATING TEMPORARY BYPASS PUMPING SYSTEM, INCLUDING SAFETY EQUIPMENT, TRAFFICBARRIERS, ETC., TO ENSURE PUBLIC SAFETY. TRAFFIC CONTROL PLAN SHALL BE SUBMITTED TO THE ENGINEER, OWNER, AND CITY OF BOZEMAN FORREVIEW A MINIMUM OF 7 DAYS PRIOR TO THE PLANNED START OF THE WORK.4.CONTRACTOR SHALL BE RESPONSIBLE FOR PLACING AND MONITORING ANY GRAVITY SEWER PLUGS AND/OR OTHER FLOW CONTROL DEVICES. PLUGPLACEMENT SHALL NOT CAUSE SURCHARGING OF SEWERS, DAMAGE TO SEWERS, DAMAGE TO PRIVATE OR PUBLIC PROPERTY, OR CREATE A NUISANCE ORPUBLIC MENACE.5.PLUGS SHALL BE PROVIDED WITH TAPS FOR CONNECTION OF PRESSURE GAUGES AND AIR HOSES. PLUGS SHALL PROVIDE FLOW-THROUGH CAPABILITY.6.BYPASS PUMP DISCHARGE PIPING SHALL BE MONITORED TO ENSURE THAT NO LEAKS ARE PRESENT. PIPING SHALL HAVE A PRESSURE RATING AT LEAST 1.5TIMES THE ANTICIPATED OPERATING PRESSURE, BE CONSTRUCTED OF HDPE PRESSURE PIPE (SDR-17 MINIMUM) WITH BUTT-FUSION WELDED JOINTS.7.CONTRACTOR SHALL PROVIDE HS-20 RATED STEEL RAMPS TO ALLOW TRAFFIC TO CROSS BYPASS LINES. WARNING SHALL BE PROVIDED TO VEHICULARTRAFFIC FOR THE PRESENCE OF THESE RAMPS.7.1.ALTERNATIVELY, THE CONTRACTOR MAY SUBMIT A TRAFFIC CLOSURE PLAN TO THE CITY OF BOZEMAN FOR THEIR REVIEW AND APPROVAL.CONTRACTOR SHALL COVER ANY COSTS REQUIRED FOR LANE CLOSURES.BYPASS PUMP EQUIPMENT1.EQUIPMENT SHALL BE DESIGNED OR EQUIPPED WITH DEVICES TO MINIMIZE NOISE. NOISE LEVELS SHALL NOT EXCEED 60 DBA WHEN MEASURED AT THENEAREST PROPERTY LINE.2.SWING CHECK VALVES SHALL BE PROVIDED FOR EACH PUMP.3.ALL BYPASS PUMPS AND ALARM CONDITIONS SHALL BE TRANSMITTED TO CONTRACTOR AND OWNER THROUGH THE USE OF A CALL BOX, WITH THECONTRACTOR REQUIRED TO RESPOND FIRST TO THE ALARM. CITY OF BOZEMAN SHALL BE INCLUDED ON THE CALL TREE IN THE EVENT THAT CONTRACTORAND OWNER DO NOT RESPOND.4.PUMPS IMPELLERS SHALL BE SIZED TO PASS A 3-INCH DIAMETER SOLIDS, AT MINIMUM.5.EQUIPMENT SHALL BE FULLY AUTOMATIC AND SELF-PRIMING UNITS THAT DO NOT REQUIRE USE OF FOOT VALVES OR VACUUM PUMPS IN PRIMING SYSTEM.05/29/2025BYPASS PUMP SUCTION LOCATION 1MANHOLE ID: M042248" DIAMETERRIM = 4781.488" INV IN (W) = 4771.468" INV OUT (E) = 4771.28BYPASS PUMP SUCTION LOCATION 2MANHOLE ID: M052948" DIAMETERRIM = 4788.1415" INV IN (S) = 4778.7015" INV OUT (N) = 4778.53BYPASS PUMP DISCHARGE LOCATION (APPROXIMATE)·EXCAVATE AND TIE INTO EXISTING 4" DIAMETER SDR-26PVC FORCE MAIN··CONTRACTOR SHALL VERIFY THAT THEDISCHARGE VALVE WITHIN THE LIFT STATIONVALVE IS CLOSED TO THIS MAIN PRIOR TO MAKINGCONNECTION.··CONNECTION SHALL BE MADE TO ENSURE NOLEAKING OCCURS DURING BYPASS·EXCAVATION SHALL BE LOCATED IN A WAY TO NOTUNDERMINE THE EXISTING CURB IN THIS LOCATION.·ELEVATIONS (BASED ON RECORD DRAWINGS)··EXISTING ASPHALT GRADE (APPROX.) = 4781.61··4" INV (APPROX.) = 4775.68··CONTRACTOR TO FIELD VERIFY LOCATION ANDDEPTH·PRESERVE AND PROTECT EXISTING 6" PVC FORCE MAIN·UPON COMPLETION, THE CONTRACTOR SHALL PLUGAND ABANDON THE EXISTING 4" MAIN EACH SIDE OFTHE TIE-IN LOCATION.··CONTRACTOR SHALL INSTALLING HYDRAULICGROUT FOR A MINIMUM OF 5' EACH SIDE OF THEOPENING AND INSTALL TWO SOCKET WELDED(GLUED) CAPS.BYPASS PUMP CONTROLS AND ALARMS1.CONTRACTOR SHALL PROVIDE THE CONTROL SYSTEM NECESSARY FOR FLOW CONTROL. CONTROLS SHALL BE CAPABLE OF PROVIDING FULLY AUTOMATIC,UNATTENDED OPERATION.2.AN EMERGENCY CALL BOX ALARM SYSTEM SHALL NOTIFY THE CONTRACTOR OF THE FAILURE OF ANY COMPONENT OF THE FLOW CONTROL SYSTEM.CONTRACTOR SHALL MAKE PROVISIONS TO ALSO NOTIFY THE CITY OF BOZEMAN AND ENGINEER OF ANY FAILURES3.A MECHANICALLY OPERATED VISUAL AID (SUCH AS A SWING CHECK VALVE) SHALL BE PROVIDED TO CONFIRM THAT THE PUMPS ARE OPERATINGCORRECTLY. THE BYPASS SETUP SHALL ALSO INCLUDE PRESSURE GAUGE AND AIR RELEASE VALVES ON THE DISCHARGE PIPE FOR BYPASS SETUP.WORK EXECUTION1.ALL WORK SHALL CONFORM TO ALL APPLICABLE OSHA REGULATIONS2.CONTRACTOR SHALL NOTIFY ENGINEER, OWNER, AND CITY OF BOZEMAN AT LEAST 48 HOURS PRIOR TO IMPLEMENTING FLOW CONTROL SYSTEM.3.THE TEMPORARY FLOW CONTROL SYSTEM MUST BE OPERATED FOR A MINIMUM OF 12 HOURS WITHOUT PROBLEMS OR FAILURE PRIOR TO BEGINNING ANYOTHER WORK RELATED TO THE PROJECT.4.ALL ANCILLARY COSTS (FUEL, ELECTRICAL POWER, MATERIALS, ETC.) REQUIRED TO OPERATE THE BYPASS SYSTEM SHALL BE THE RESPONSIBILITY OF THECONTRACTOR.5.CONTRACTOR SHALL ENSURE THAT ALL VALVES INSIDE THE LIFT STATION BUILDING ARE CLOSED TO PREVENT SEWER FROM BEING DIVERTED INTO THE WETWELL.PROJECT CLEANUP1.CONTRACTOR SHALL DISCHARGE RESIDUAL SEWAGE IN BYPASS PIPELINE AND PUMPING EQUIPMENT TO WORKING SEWER BEFORE THE SYSTEM ISDEACTIVATED AND REMOVED AT THE COMPLETION OF THE WORK.EXISTING LIFT STATION BUILDINGEXISTING WET WELLLAUREL PARKWAYVAUGHN DRIVEDEMOLITION1.THE CONTRACTOR IS RESPONSIBLE FOR HAULING ALL DEMOLISHEDMATERIAL OFF SITE. ANY COST ASSOCIATED WITH HAULING ORDISPOSAL OF THE MATERIAL IS THE RESPONSIBILITY OF THECONTRACTOR.2.DEMOLITION ITEMS ARE GENERALIZED BELOW AND DO NOTCONSIDER TIMING OF THAT WORK.RESTORATION1.DEMOLITION ITEMS ARE GENERALIZED BELOW AND DO NOTCONSIDER TIMING OF THAT WORK.2.SITE RESTORATION SHALL INCLUDE CLEAN UP, FINAL GRADING, ANDREPLACING SURFACE MATERIALS IN DISTURBED AREAS.3.CONTRACTOR SHALL REPLACE ANY REMOVED TRAFFIC MARKINGS.4.CONSTRUCTION WORK SHALL BE IN ACCORDANCE WITH CITY OFBOZEMAN DESIGN STANDARDS, CITY OF BOZEMAN MODIFICATIONSTO MONTANA PUBLIC WORKS STANDARD SPECIFICATIONS, ANDMONTANA PUBLIC WORKS STANDARD SPECIFICATIONS (CURRENTEDITION).5.TRENCH SHALL BE BACKFILLED USING FLOWABLE FILL AND BE INACCORDANCE WITH THE STANDARD SECTION SHOWN IN DETAIL 2 ONSHEET SD-4.6.ANY DAMAGE TO ITEMS NOT DESIGNATED FOR REMOVAL IS THERESPONSIBILITY OF THE CONTRACTOR TO RESTORE BACK TO THEORIGINAL CONDITION.