Friday - June 6, 2014

Water Treatment Plant Construction Update

54” pipe and shoring support – pipe to be installed next week

This week, the auger cast piles and slabs were completed for the 54” pipe to connect the clearwell and filters and concrete was poured for the clearwell roof slabs. Crews also continued pouring walls for the solids storage tank and preparing wall forms for the mechanical dewatering building.

Next week, crews will install man holes and backfill for the 48” overflow pipe near the chemical building and excavate for other miscellaneous drainage pipes, near the ballasted flocculation. Work will also begin on leak testing the gravity thickener building. Refer to the current site plan for locations of each structure.

Over the next few weeks, work will continue on the clearwell and ballasted flocculation roof slabs which are poured in a checkerboard pattern. The next large pour for the clearwell and ballasted flocculation is scheduled for late next week. Waterblasting with a pressure washer or sandblasting of the edges of the newly poured slabs will occur within one or two days of a roof pour. Neighbors close to the site on Mapleton Drive and Kenthorpe Way may experience intermittent noise during this work. Truck traffic will continue during concrete pouring for new structures.

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.

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 June 9 - 14

1 Continue forming shoring roof support & concrete pouring for clearwell and ballasted flocculation Provide upper covering for the structures No anticipated new noise. Trucks entering/exiting with equipment, formwork. Some intermittent noise from waterblasting or sandblasting concrete – south (Mapleton) and center of site. 2 weeks
2 Begin shoring roof support for solids storage tank. Provide temporary support for forming roof No anticipated new noise, concrete pouring concrete trucks entering/exiting with equipment – center & northeast of site. 3 weeks
3 Continue installing forms for the trough inside the gravity thickener and begin water testing the structure. Captures treated water overflows from clarifier & 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 and piping under the slab, & column and wall forms for electrical building and chemical building, some backfilling required. Provide electrical wiring for structure & foundation to support structure No anticipated new noise. Potential vibration during backfilling of sumps for chemical building – center of site. Trucks entering/exiting with equipment. Concrete pouring, concrete trucks entering/exiting center of site. 3 weeks
5 Begin forming and pouring walls for mechanical dewatering structure 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. 3 weeks
6 Begin installing 54” pipe and welding joints Connects clearwell and filters No anticipated new noise. Trucks/equipment/pipe entering 2 weeks
7 Begin installing manhole and backfill for 48” overflow pipe , excavate for miscellaneous drainage piping Refills excavated area, and prepares for piping installation Some noise and vibration as compactor compresses fill and excavator digs and moves across center of site. 2 weeks

Week of June 16 - 21

1 Continue activities from 1- 7 above.

*Please note, activity duration and schedules may change