October 2009

Situation
At a Sprayroq product installation demonstration in his hometown of Lancaster, S.C., Public Works Director Mack McDonald observed the use of SprayWall, which he believed could help restore an aging clarifier at the city’s wastewater treatment plant. He contacted Osborn Contract Services, Inc. (OCS) of Greer, S.C., to investigate his leaking clarifier. It’s structure was not only crumbling away daily, but due to an uneven substrate, was very difficult to clean and keep free of algae.

Solution
In October, 2009, OCS mobilized a repair unit to the clarifier, located inside the gates of Lancaster’s wastewater treatment plant. The structure was cleaned using a 4,000 PSI pressure washer. Special care was taken to remove all loose outer material, creating a solid substrate to begin the build-back. OCS then installed Fox Industries’ FX-263 rapid-set repair mortar, both as the initial build-back material and to fill large voids left by years of deterioration. OCS then installed up to one-half inch of Fox Industries’ FX-262 micro silicate mortar to profile the floor and interior walls of the clarifier and to prevent future leakage.

October, 2008

Situation
A sanitary manhole at the intersection of North Lake Way and Mockingbird Trail in the Town of Palm Beach, Fla., was a heavily deteriorated brick structure exhibiting the presence of groundwater infiltration. Additionally, the bench and the inverts were compromised due to wastewater traffic. With one additional service feeding the manhole, the structure was consistently surcharged. The city was looking for structural rehabilitation and a fast return to service. SAK Construction, LLC of Puyallup, Wa., a Sprayroq Certified Partner, turned to SprayWall to solve the problem.

Solution
As a standard procedure, the manhole was pressure washed at 3,000 PSI to remove debris. SAK prepared the structure, utilizing a hydraulic cementitious mortar to provide a smooth substrate vital to the successful adhesion of Spraywall Urethane Coating. Please note that new bench and trough structures were created to ensure a smooth transitional channel for the existing inflow and effluent flow.

Situation

Lake Heron’s water level was so low that it was impossible for the city of Liverpool, Pennsylvania, to allow any recreational use.  Upon further review, the repair crew realized that the lake’s overflow pipe—located on the edge of the lake—had deteriorated to the point where many flow points were located along its length. To fix the pipe, the city needed a corrosion barrier and a product that was structural in nature. The corrugated pipe measured 20’ deep and 42’ in diameter. This would make spray access easier, but the depth made it a nightmare for dealing with water. With the average annual temperature of 27.6°F during this time of the year, snow and freezing temperatures would also be troubleshooting factors.

Situation

Master Lift Station 13A in Manatee County, FL was in need of rehabilitation due to heavy deterioration of its walls and high levels of debris that was causing the overuse of pumps. The 8 foot high level of debris included buckets and bricks. Upon initial inspection of the lift station, National Pipe Services confirmed that the major task for a successful rehabilitation would be the complete removal of all of the debris and setting up the scaffolding to reach the top of the structure’s 20 foot high walls.