Solution Spotlight: Dewatering - August 2014 - Pennsylvania

  • Wednesday, 02 July 2014

WTS2000 Succeeds in Dewatering Pennsylvania Construction Site

In early July, shortly after the WTS2000 was approved for use in Pennsylvania, Aqualete Industries was contracted to solve the problem of excessive surface water at a large jobsite in Berks County, PA. The site had a very high water table and close proximity to a stream, which contributed to consistently wet working conditions. Despite the contractor's best efforts, excavation and foundation work were delayed.
Earlier this year, we had the opportunity to present the WTS2000 to the Pennsylvania DEP, DOT, and several members of various State Soil Conservation Districts during a site demonstration in Carlisle, PA. The DEP selected a yellow clay sediment basin that had not released its captured water to the aquifer for many years and, consequently, frequently overflowed. As was demonstrated, the WTS2000 portable sediment tank successfully treated the water, reducing pollutants, hydrocarbons, clay and other sediment and improving the quality of the effluent water to such an extent that an approval was issued without contest. These officials contacted local construction companies to update everyone on this new approved technology.

Members of several State Soil Conservation Districts visited sites that were having trouble finding technology to manage the water properly while meeting effluent water requirements, including the one in Berks County. Initially this site was using geotextile filter bags (bladder bags) as part of their sediment control plan. This product was unable to sufficiently handle fine silt or heavy clay at the flow rate needed to successfully dry the site. (image below)

Aqualete Industries brought three (3) WTS2000 portable sedimentation systems to treat the surface water and well point water pumped from this site. The goals of this project were as follows:
1.    Treat the water prior to discharge; improve effluent quality according to EPA regulations.
2.    Assist with the placement of well points to dry up current conditions.
3.    Lower the water table enough to dry up future excavated areas.
4.    Ensure dry working conditions, so footings and foundation work can be finalized.

Working alongside the contractors, a plan was established that completed all the intended goals. The WTS2000 units were put in place and millions of gallons of water (750gpm/45,000gph/1,080,000gpd) were pumped through our systems. Effluent quality was such that the treated water was discharged directly into the outfall pipe without further treatment. Within a few days of executing the plan, the impact was evident. (image below)

An inspection of the site was made on July 23, 2014. As a result of implementing the three WTS2000 units, the water table was lowered, no surface water was left on site, work area was dry, and footings were in the process of being poured. Most importantly, the jobsite will remain dry for the duration of the construction project.

The WTS2000 portable sediment tank uses no chemicals or replaceable filters and has a peak flow rate of 375gpms with gravels and 120gpms with heavy clays. Our units can be run in parallel to reach the highest gpm needed. As you can see from the influent and effluent images shown below, the proof is in the results.

What products are you using for dewatering?
Are they garnering the results shown here?
Is your current treatment train effective and affordable?
Do you need the best available technology on your site?
Complying with water quality standards is mandatory, paying too much for an ineffective solution is not!

"Using this equipment is pennies in the bucket compared to what it costs us when the job is delayed."
- Onsite General Contractor

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Aqualete Industries
3417 Sunset Avenue
Ocean, NJ 07712
P: 732.695.6336