Construction Updates

Construction Activities- Week of October 20, 2014

Lincoln Wastewater Reclamation and Treatment Facility Construction Activity

Work/Activities Performed Last Week:

  • Complete forms/rebar at Solids Dewatering Building foundation/slab – Placed concrete.
  • Continued installation of new gates MOG-12001 & MOG-13006 at existing Headworks.
  • Started fit-up of new irrigation system at the Headworks Biofilter.
  • Continued forms/falsework at west-side centered elevated walkways at Oxidation Ditch 3.
  • Installed new doors and frame at the Tertiary Filter Addition Pipe Gallery.
  • Continued installation of joint sealant at Tertiary Filter and Oxidation Ditch 3.
  • Continued forms/rebar/waterstop at west wall of Oxidation Ditch 3.
  • Continued installation of 12”-Drain at the north side of Oxidation Ditch 3.

Work Scheduled to be Performed this Week:

  • Complete prep and start epoxy lining at existing Chemical Storage.
  • Complete forms/rebar for the balance of walkways at Oxidation Ditch 3 – Place Concrete.
  • Complete forms/rebar/waterstop at west wall of Oxidation Ditch 3 – Place concrete.
  • Complete prep and start installation of interior epoxy lining at Headworks.
  • Fill new Secondary Clarifier to 2-FT below top-of-wall for water leakage test.
  • Backfill at perimeter of foundation/slab at the Solids Dewatering Building.
  • Continue sack & patching interior of Oxidation Ditch 3.
  • Continue installation of power/control/lighting conduit at existing Headworks.

 

 


Pipeline Construction Activity

Work/Activities Performed Last Week:

Work/Activities Performed Last Week:

Reach 1 (Sta: 10+00 to 55+00) – Turkey Creek

  • There is little other activity at this site.
  • The power screen has been mobilized and is being used to generate backfill material for use at on the Wise Road Overland Reach.

Reach 1 (Sta: 10+00 to 261+42.90) – Virginiatown Road

  • No work was performed in this area this week.

Reach 2 (Sta: 10+00 to 109+71.09) – Chili Hill Road

  • Trenching operations continue up Chili Hill Rd to Sta: 70+00.
  • A series of boulders have been encountered which slowed progress for about four (4) days. Excavation moved passed the boulder field located from approximately Sta: 65+00 to 70+00. Neil’s Controlled Blasting mobilized their drill rig out in front of the main trench excavator. This was a significant factor in the success of the excavation passed the Boswell’s pond and then beyond the private driveway at Sta: 69+50.
  • At Sta: 69+00 an AT&T line and culvert were encountered. The contractor was able to go under without any cutting.
  • Rain on Wednesday stopped work on this Reach of the project.
  • Because of the rain the crew fell back and replaced/repaired two (2) culverts; one at Sta: 62+20 and one at Sta: 31+80.
  • Two (2) Blow Off Valves were installed; one at Sta: 248+94 and one at Sta: 255+81. Traffic control was provided at these locations which included two (2) flaggers and proper signage.
  • Compaction testing was coordinated with Tim Davis from Blackburn.
  • Observation of the end of the day operations; clean-up, paving, placing the plates and trench shoring.

Reach 3 (Sta: 10+00 to 203+71.07) – Wise Road Overland (WRO)

  • Contractor continues to excavate, lay and backfill pipe on the Shanley and Thompson Overland portion of Reach 3, Sta: 108+70 to Sta: 171+50. This week they installed 1,635 feet of HDPE pipe, for an average of 273 feet per day.
  • They blasted 433 feet of rock between Sta: 130+50 to Sta: 132+80, Sta: 139+90 to Sta: 141+75 and Sta: 150+82 to Sta: 151+00.
  • The contractor completed CLSM backfill between Sta: 113+10 to Sta: 109+60.

Work Schedule to be performed this coming week:

  • Processing soils with the power-screen to Turkey Creek site.
  • Continue with trench excavation and pipe installation at Reach 2, Chili Hill Rd.
  • Contractor will continue trench excavation at various locations in the Shanley and Thompson Overland area. The contractor will continue to work on the CLSM backfill between Sta: 109+60 and Sta: 108+70.
  • Continue welding and string pipe between Sta: 161+50 and 172+00 in Reach 3.
  • Continue to install and monitor the SWPPP best management practices
  • Continue moving HDPE pipe from WWTRF property to final location on of Reach 3.

 

 


SMD-1 Construction Activity

Work/Activities Performed for the identified time period:

  • MCC/Electrical Building – DCI – Finished placing outside panels & interior panels for concrete placement on Friday.
  • Standby Generator Pad Area – DCI – removed outside formworks from last Friday’s concrete pour.
  • Rain out Day Wednesday, October, 15th due to excessive Mud & light rain.
  • DCI – Placed 14 Cu.Yds. of concrete on Friday for the MCC / Electrical Building pad. Started concrete placement @ 11:30am and finished @ 12:40am.
  • Camblin Steel – Started and finished installing reinforcing steel for MCC / Electrical Building Pad.
  • DCI – Continued cleaning forms and stacking on pallets with banding for shipping back to EFCO. EFCO Loaded out over half of palletized forms and beams on Thursday 10/17/2014.
  • DCI – Patching Pump Station rock pockets on the South & North side.
  • DCI – No Potholing – at SE part of plant to verify the Gas & NID lines that will be crossed during the 28” HDPE force main installation scheduled in approximately two weeks. DCI put in for potholing but did not continue from last week.
  • Watson Engineering – Laying out Force Main pipe line from Pump Station to Rock Creek along the South end of Plant.
  • Continue to dewater into Baker tanks and land apply the water as dust control with water truck.

Work/Activities Planned for this week:

  • DCI – The EFCO forms will continue to be removed, cleaned, and palletized from the walls as the crews have time and access.
  • DCI – Started dewatering into Pump Station last Friday and will continue this week to fill the new pump station wet well and influent channels for leak testing.
  • Camblin steel – No work planned this week.
  • DCI – The carpenter crews will strip the formwork from the MCC / Electrical building pad.
  • DCI – General site clean-up and moving that Conex Boxes (2) to the NE side of project so DCI can start on Bio-filter work.
  • Auburn Contractors – Tuesday – Excavation and Installation of materials for PG&E primary main conduit line from SE corner of project along the East side of Pump Station and terminating along the East side of MCC / Electrical building. PG&E inspection set for Thursday.
  • No work on Headworks while waiting on DCI pumping plan for modifications to plant structure.
  • Possible pothole investigation for possible force main conflicts will continues this week, still looking for the 1” diameter NID water line on SW corner of Plant.

 

 

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!