Project Profile: Esholt WWTW Project: Esholt WWTW, Primary Settlement Tank Repairs Client: Yorkshire Water PLC The project: Yorkshire Water (YW) were enduring problems with deterioration to their Primary Settlement Tanks (PSTs) within Esholt Waste Water Treatment Works in Bradford. The PSTs had been recently constructed as part of the Freshwater Fish Directive Scheme under Yorkshire Water’s AMP 5 (Asset Management Plan). Two PSTs were showing signs of wear, particularly the tops and sides of walls where the concrete was friable and had broken down at the surface to leave an exposed aggregate finish, particularly around the line of the agitator boom running wheel where a running groove had formed in the top of the concrete around the wall tops. APA Concrete Repairs Ltd were

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