Construction Updates

Construction Activity- Week of June 15, 2015

Lincoln Wastewater Reclamation and Treatment Facility Construction Activity

            

 The following is a brief description and several photos of the Wastewater Treatment and Reclamation Facility Project of work activities performed from 06/07/15 – 06/13/15
Work/Activities Performed Last Week:
-Continuing to install subgrade at new paved roadways.
-Installing landscaping rock at landscape areas mostly at the future Clarifier 4 and Secondary Clarifier 3.
-Continuing to install forms for concrete curb, gutter, and concrete lined channel.
-Installing redwood header for asphalt.
-Continuing the 5 day testing.
-Continuing to repair coating at Chemical Storage facility at New Muriatic Acid Storage 1.
-Continuing to work on TNK 52601 new Muriatic Acid Storage 1.
-Installing hand railing and stairs at Oxidation Ditch 3.
-Continuing the Headworks modifications for the new dumpster per RFP 29.
-Installing underdrain system around Oxidation Ditch 3.


Work Scheduled to be Performed this Week:

-Continuing to install forms for concrete curb, gutter, and concrete lined channel.
-Installing redwood header for asphalt.
-Continuing to work on TNK 52601 new Muriatic Acid Storage area 1.
-Continuing the Headworks modifications for the new dumpster per RFP 29.
-Installing pavement at new road locations and in areas where contractor damaged pavement.
-Continuing to install conduit tags and arch flash stickers throughout the site.
-Testing of the RAS Pumps now that the VFD has been configured.
-Installing new breakers for harmonic filters at MCC 202A.
-Continuing testing of new equipment.


Pipeline Construction Activity

The following is a brief description and several photos of the Conveyance and Reclamation Pipelines Project of work/activities performed for the week ending 06/13/2015.

Work/Activities Performed Last Week:

Reach 1 (Sta. 10+00 to 55+00) – Turkey Creek
• Work is nearly complete on the installation of the pigging station at Turkey Creek. Several vaults have been set. Also, many of the valves have been installed and have been bolted into place. Still remaining is the grouting to do on the pipes and vaults.
Reach 1 (Sta. 10+00 to 261+42.90) – Virginiatown Road
• No work performed on Virginiatown Road this week.
Reach 2 (Sta. 10+00 to 109+71.09) – Chili Hill Road
• Lay out for the pigging station on Chili Hill, (Park Lake), has been corrected. There was a conflict with an existing utility pole. This has been addressed and corrected. They poured slurry at the base of the utility pole to prevent it from tipping. They also brought in a large steel anchoring system and attached it to the utility pole for additional support.
• There was a problem with the survey offsets which caused the excavation to be dug incorrectly. This caused problems with the shoring and plating as new larger and longer plates and shoring had to be brought in causing delays. Also, because of the heat, they experienced some equipment failures.
Reach 3 – S Bar V (Sta: 76+95 to 94+13)
• No work performed this week.
Reach 3 – Wise Road (Sta: 32+88 to 56+50)
• No work performed on Wise Rd this week.
Reach 4 Joeger Rd (Sta 10+00 to 137+90)
• The main heading is working on Joeger Road between Sta. 103+60 and Sta. 95+80. Contractor is also working on boring under Deadman’s Ravine at Sta. 28+60. Boring actually started at 1145 on 6-11-15 at 1500 on 6-12-15 they are approximately 14 feet in.
• Contractor excavated 1200’ of trench this week for a rate of 240 feet per day. Contractor backfilled 1169’ of HDPE pipe this week for a rate of 234 feet per day. Contractor excavated 122.3 CY of rock this week for a total to date of 7345.12 CY.
• Contractor excavated and backfilled 5 days this week. One day was a rain day.
• There has been a crew on Joeger Rd. and Bell Rd. most of the week pot holing for utilities. They are utilizing a track mounted drill rig to pre-drill the rocky areas for relief holes to facilitate excavation through that area. They have begun to excavate across Bell Rd. as well.

Reach 6 – E. Catlett Road – Water Reclamation Line
• No work performed this week.
Biofilter, Lincoln Blvd.
• The excavation for the leach pit, and the trenching for the drain lines has been performed. Several small concrete pads for the above ground duct work have been completed. The sub has been onsite fabricating the 12” manifold for the leach pit. They are still waiting on additional parts. No further progress.
Work Schedule to be performed this coming week:
• Continue to install and monitor the SWPPP best management practices.
• Continue reaming under Doty Ravine.
• Continue to excavate, lay and backfill pipe on Joeger Rd. Contractor plans to continue to work on boring under Deadman’s Ravine at Sta. 28+60. The contractor continues the 24 hour lane closure this week on Joeger Rd. and at Deadman’s Ravine.
• Installation of the Pigging Station on Chili Hill and Park Lake Ct.
• Continue with pot holing for utilities, Joeger and Bell Rd’s

SMD-1 Construction Activity

The following is a brief description of the SMD 1 Sewer Conveyance Pump Station work activities performed through the week ending 6/13/15.

 

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 6/13/15.

  • DCI – The first portion of this week was dedicated to the headworks diversion structure tie-in work which consisted of Disney providing a full bypass of WWTP influent from the flow measurement manhole to the grit basin of the WWTP.
  • The temporary bypass pumps were set in position last week and tested. This week the bypass pumping was started at 11 pm on Monday 6/8/15 and the bypass continued until 5:20 am. The wall section of the influent channel was jackhammered through with only rebar and some small concrete areas protruding into the influent channel by the time the bypass was stopped and flow reinstated in the influent channel.
  • DCI – the first night involved two jackhammers pounding constantly for approximately 5 hours and rebar being cut as the wall was being demolished.
  • DCI – The second night of bypass pumping required a thorough cleaning of the concrete from the channel use on Tuesday. No gate leakage was noticed between the bypass pumping.

 

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!