Friday - February 14, 2014

Water Treatment Plant Construction Update

Pouring concrete in the clearwell for the finished water pump station walls

The first phase of demolition work is now complete. Over the next few weeks, work will be concentrated on excavating, drilling auger cast piles for new foundations and concrete pouring.

Next week, a deep excavation (about 15 feet) next to the newly installed sheet piles to the west of the lagoons will take place. This is to prepare for the solids storage tank structure and gravity thickener. Once excavation is complete, auger cast piles will be drilled to support the foundation.

In late February - early March, a second tower crane will be installed, located on the west of the site.

Although there are no anticipated “new” activities or new sources of noise or vibration similar to last week’s sheet piling, neighbors can expect some noise and potential vibration during the auger cast drilling and excavation, depending on locations or personal sensitivities. Also, there will be an increase in truck traffic with concrete trucks and dump trucks hauling spoils off site during the concrete pouring.

Generally over the next few weeks, work hours will be Monday to Friday from 7:00 a.m. to
5:00 p.m. and Saturdays, from 9:00 a.m. to 5:00 p.m.

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.

Upcoming Activities*Purpose of WorkPotential ImpactsEstimated Duration

Week of February 

1 Continue forming the base slab for clearwell and walls for finished water pump station Provide foundation and support the finished water pump station Concrete pouring, concrete trucks entering/exiting 2 weeks
2 Begin excavating for new solids storage tank and gravity Sludge solids removed in the treatment process will be thickened and stored in these tanks. Noise, possible vibration as excavator digs, trucks entering/exiting 2 weeks
3 Continue forming the base slab and walls for ballasted flocculation building Provide foundation tosupport the ballasted flocculation building Concrete pouring, concrete trucks entering/exiting 2 weeks
4 Continue backfilling the finished water pump station in clearwell Refill excavated area after concrete placement Trucks entering /exiting, noise 1 week

Week of February 24

1 Continue forming base slab for clearwell and walls for finished water pump station (see 1 above)
2 Continue excavating for gravity thickener building (see 2 above)
3 Continue forming base slab and walls for ballasted flocculation building (see 3 above)
4 Begin installing auger cast piles for electrical building, gravity thickener and second tower crane Piles will support the foundation of the structures and tower crane Noise, possible vibration as drill moves across the north east and west of site 2 weeks

*Please note, activity duration and schedules may change