Thursday - July 3, 2014

Water Treatment Plant Construction Update

Rebar cages for 48” overflow auger cast piles arrived at the site this week

This week, crews starting excavating and installing the slide rail shoring system for the new 48” overflow pipe near the chemical building. This is the same shoring system that was used on-site last month for the 54” pipe (not sheet piling that was used earlier this year). Auger cast pile drilling also resumed to support the new pipe, and will continue next week. Over the next few weeks, crews will lay the 48” overflow piping, weld it together and then encase it in concrete.

Concrete work continues to progress for new structures across the site, including the ballasted flocculation, clearwell, mechanical dewatering building, electrical building and solids storage tank. Refer to the current site plan for locations of each structure. Pressure washing or sandblasting of the edges of newly poured concrete slabs will occur one or two days after a concrete pour. Neighbors close to the site on Mapleton Drive and Kenthorpe Way may experience an increase in noise during this work. Truck traffic will continue during concrete pouring for new structures and increase during excavation at the site.

Once the clearwell roof is complete, the north side of the clearwell will be backfilled. This is expected to start in mid-July and take about two weeks to complete. Neighbors close to the site on Mapleton Drive and Kenthorpe Way may experience intermittent vibration during this work.

Work hours are Monday to Friday from 7:00 a.m. to 7:00 p.m. and Saturdays, from 9:00 a.m. to 5:00 p.m. There will be no work on the Fourth of July weekend.

For more detail about what activities are happening on site please see the table below. We apologize for the inconvenience construction may cause and thank you for your patience as work progresses.

For more information, please contact us

Upcoming Activities*Purpose of WorkPotential ImpactsEstimated Duration

Week of July 7 - 12

1 Continue concrete pouring for clearwell, ballasted flocculation and solids storage tank Provide upper covering for the structures and foundation support No anticipated new noise, concrete pouring. Trucks entering/exiting with equipment, formwork. Some intermittent noise from waterblasting or sandblasting concrete – south (Mapleton), center and east of site. 3 weeks
2 Continue forming walls for mechanical dewatering structure and begin forming shoring roof support Provide foundation to support the mechanical dewatering building No new noise anticipated. Concrete pouring, concrete trucks entering/exiting, intermittent noise from waterblasting or sandblasting concrete – northeast of site. 2 weeks
3 Continue water/leak testing the gravity thickener structure and apply water proof coatings Cleans and tests new structure No anticipated new noise. Trucks entering/exiting and concrete poured – northeast of site. 2 weeks
4 Continue installing electrical conduit, rebar and piping; form columns, walls and slabs for electrical building and chemical building, some concrete pouring required. Provide electrical wiring for structure & foundation to support structure No anticipated new noise. Trucks entering/exiting with equipment. Concrete pouring, concrete trucks entering/exiting center of site. 3 weeks
5 Continue excavating, installing auger cast piles, laying 48” overflow pipe, welding and encasing in concrete The overflow pipe will connect the new filters and washwater basins Some vibration or noise during excavation and auger cast pile drilling, as equipment moves around the site. Trucks entering/exiting with equipment. Concrete pouring – center of site. 2 weeks
Week of July 14 - 19      
1 Continue activities from 1 - 5 above
2 Begin backfilling the north side of the clearwell Refills excavated area Potential vibration during backfilling as compactor compresses fill – center of site 2 weeks

*Please note, activity duration and schedules may change