By Dennis F. Hallahan, P.E. Introduction High strength waste (HSW) presents a challenge for any type of onsite wastewater treatment system. This  is apparent in restaurant facilities, where the design…

By Dennis F. Hallahan, PE, Determining the optimum wastewater treatment system design can be complicated particularly in sensitive watershed areas or where fluctuating daily flows and seasonal temperature fluctuations are…

By Dennis F. Hallahan, PE Introduction Good onsite wastewater treatment combines proper soils evaluation, siting, selection of the most effective product, and installation best practices regardless of the size of…