Expansion Project – In response to sudden accelerated growth within the facility’s service area, the City of Roseville selected W. M. Lyles Co. to expand the Pleasant Grove Wastewater
Treatment Plant. The Expansion Project includes the following major improvements: Primary Clarifiers, pumps for the transfer of primary sludge and scum to the digesters, an overhead
crane for maintenance, Odor Control Facility, two (2) digesters, Sludge Thickening Facilities, Chemical Feed Facilities, and civil, structural, mechanical, and electrical infrastructure as
needed to support the aforementioned facilities. Over the life of the Project, WML crews will dedicate more than 83,000 field man-hours to install 5,400 cubic yards of concrete and 36,000 lineal feet of pipe. The Project will also require approximately 980,000 pounds of rebar and 50,000 cubic yards of exported and imported dirt fill.

Energy Recovery Project – In an effort to reduce greenhouse gas emissions and utilize renewable energy, the City of Roseville developed the Energy Recovery Project which will produce wastewater biogas to provide alternative CNG/Biogas fuel for City-owned fleet vehicles and alternative fuel systems to generate secondary electrical power and heat to operate the Pleasant Grove WWTP. The Project includes the following major improvements: High-Strength Waste Receiving Station, Odor Control Facility, Biogas Upgrading System, Compressed Natural Gas (CNG) Fueling Station, Cogeneration Facility, and civil, structural, mechanical, and electrical infrastructure. Over the life of the Project, WML crews will expend more than 19,000 field man-hours while putting in place approximately 1,300 cubic yards of concrete and 11,000 lineal feet of pipe.