Construction Updates

Construction Activities- Week of January 19, 2015

Lincoln Wastewater Reclamation and Treatment Facility Construction Activity

            

Work/Activities Performed Last Week:                                          

  • Continued structure backfill operations at Oxidation Ditch 3.
  • Completed water cure at Secondary Clarifier slab topping grout.
  • Continued anchor and PVC Header and Diffuser installation at Oxidation Ditch 3.
  • Started installation/modification of Pipe Railing System at existing Headworks.
  • Continued installation of Tertiary Filter Sand Media components at Tertiary Addition.
  • Started excavation/installation of electrical duct bank to Secondary Clarifier.
  • Continued installation of the pre-fabricated metal building addition at Solids Dewatering.
  • Set anchor bolts and placed concrete for RAS Pump Station pump pads.
  • Continued excavation and installation of 36” ODI from Splitter Structure to Oxidation Ditch 3.

 

Work Scheduled to be Performed this Week:

  • Continue installation of Tertiary Filter Sand Media components at Tertiary Addition.
  • Continue layout and installation of piping/mechanical support anchors inside Oxidation Ditch 3.
  • Complete installation of pre-fabricated metal building addition at Solids Dewatering Building.
  • Continue installation of Pipe Railing System for walkway at Oxidation Ditch 3.
  • Complete electrical duct bank conduits/rebar to Secondary Clarifier and place concrete.
  • Complete installation of Pipe Railing System for RAS Pump Station.
  • Complete installation of 36” ODI from Splitter Structure to Oxidation Ditch 3.
  • Complete installation of 36” ML from the Splitter Box to Oxidation Ditch 3.
  • Start installation/modification of Pipe Railing System at Tertiary Filter Addition.

 


Pipeline Construction Activity

S Bar V Road

The construction activity on S Bar V Road previously scheduled to begin Tuesday, January 20 has been delayed until the week of January 26, 2015.  The detour on S Bar V road won’t begin until the week of January 26.  A detour map will be provided to local residents prior to the detour being implemented.

Chili Hill Road

Work on Chili Hill Road will continue next week and should last through Friday, January 23. This work is underway approximately 1/4 mile east of Crystal Oak Place. This work will require a rolling road closure of Chili Hill Road between the hours of 9 a.m. and 3 p.m., Monday through Friday.  A rolling road closure requires the contractor to shut down the road within the work area (approximately 500 feet of road at a time) to allow for workers and equipment to safely install the pipeline.  Local residents living within the rolling closure area will be provided access to their property during this period.  With the exception of emergency vehicles and school buses, no through traffic will be allowed.

 

 

SMD-1 Construction Activity

Work/Activities Performed for the identified time period:

The following is a brief description of the SMD 1 Sewer Conveyance Pump Station work activities performed through the week ending 12/27/14.

Work/Activities Performed for the identified time period:

  • DCI – Continue to monitor SWPPP measures and maintaining Silt Fence, Sandbags, Wattles, Hay bales, Coco Matts, Washed Rock and Visqueen throughout the site as there was rain in the forecast for Wednesday afternoon. Monday and Wednesday were impacted by the previous rain over the weekend and the rain which stated on Wednesday afternoon at about 1 PM.
  • DCI – Did not work on the 28” HDPE Raw Sewage forcemain pipeline on the Southwest portion of project. Because of the wet conditions, DCI moved the excavator over to the west side of the wetwell structure and started the 24” RS pipeline installation which will eventually connect the modified clarifiers to the pump station
  • Auburn Contractors – MCC/Electrical Building – The electricians brought out a fork lift to offload and install the Tesco VFD and MCC panels in the electrical building and anchored the panels once finally positioned into place.
  • WV Alkton set the Roof mount fans and vent on Monday, two wall mount air conditioners on Tuesday, and the third air conditioner on Wednesday.
  • DCI – Cleaning, chipping, and drilling anchors for gate installation in the wetwell area and later in the week worked on installing the flap gates at the overflow channel.
  • DCI – Worked on plans to use the two baker tanks for processing ground water now that they are set north of the Stockpile east of the east fence, though still not level.
  • Rain/weather days were submitted for Monday and Wednesday due to rain and wet site conditions. The rain Wednesday afternoon lasted about 6 hours.
  • DCI – Excavation around the Pump station northwest corner to continue installing the 30” OF piping section towards the ESB-1. Crew had to cap a 1-1/2” 3W line on Wednesday that was not shown on plans but in the trench line for the 30” OF.

Work/Activities Planned for this week:

  •  DCI – Possibly continue pipeline installation for the 28” RS line, weather permitting, from Southwest corner of Plant near tie-in location to plant main gate after the 24” RS is completed to 40’ west of pump station structure.
  • DCI – Continue to clean up inside the wetwell setting slide & flap gates in the Pump St.
  • Auburn Constructors electrical – Continue installing conduits and connecting panels and gear in MCC /Electrical building. Generators should be delivered 12/29/14.
  • DCI – Continue excavation around the Pump station to install piping section for 24” RS, 24” RS return & 30” OF lines which will receive plugs for isolation of wetwell.
  • DCI – Continue to monitor SWPPP measures and review the SWPPP approach & BMP’s.

Post-construction Roadway Pavement Process

In the construction segments where the pipeline is being installed in a roadway the existing pavement is excavated for pipeline placement.  After the pipeline is installed and the trench filled in, a temporary pavement patch is placed on the disturbed section of roadway.  After the pipeline has been installed, a variety of pipeline-related equipment such as air release or blow off valves are placed along the alignment.  Once that work is completed and no further construction activity is required, the contractor will provide the permanent paving patch over the disturbed section of roadway.  This will likely occur later this fall, depending on construction circumstances.  We appreciate your cooperation and patience!