Home > ALCOSAN Continues Prep for Clean Water Plan

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March 21, 2017 – As the Allegheny County Sanitary Authority continues its preparations for a massive investment for healthier and cleaner rivers and streams across the region, the authority has begun the next level of technical analysis for planning purposes.


This work will take place as other elements of ALCOSAN’s green-first Clean Water Plan proceed.


Beginning on March 27, contractors will begin conducting geotechnical testing across the region.


The first worksite will be at ALCOSAN’s wastewater treatment plant on Pittsburgh’s North Side. As at all sites, borings will be made to assess the condition of the soil and rock, gather information on the level and amount of groundwater and obtain an understanding of the subsurface conditions that could influence future plans.


Drill rigs and support vehicles will be present, with traffic controls in place in locations where the public has access. The locations have been selected to minimize the impact on residents and businesses, and contractors will maintain access for local traffic to any affected driveways and sidewalks.


Operations typically run from 7 a.m. to 5 p.m., and the work should take one to two weeks in each location. All personnel will wear ALCOSAN safety vests.


While the process is fairly quick and every effort will be made to keep disruption to our neighborhoods minimal, this process can be noisy as the drill rigs dig through the ground.


Once the borings are complete, monitors will be put into place, and they will be checked periodically, but the rigs and support vehicles will be on the sites only temporarily.


This work will take place at 13 sites in Pittsburgh, Rankin and McKees Rocks.


ALCOSAN is one of the region’s premier environmental and public health organizations, treating wastewater for 83 Allegheny County communities, including the City of Pittsburgh. The authority, which is Green by Mission and Green by Choice, enhances the community’s quality of life and safety. ALCOSAN’s 59-acre treatment plant processes up to 250 million gallons of wastewater daily and is one of the largest such facilities in the Ohio River Valley.

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