The Greatrock North Water and Sanitation District retained our team to address its aging and failing reverse osmosis water treatment plant. The existing plant designed and built by the original developer had a capacity of 100 gpm and could not keep up with the desired capacity or the district’s water quality targets.
The Edgemont Ranch Metropolitan District was issued new, strict TIN, TN and TP limits that rendered their lagoon obsolete. As a remedy, the district looked to the BIOCOS technology, a hybrid activated sludge system to deliver more thorough treatment, consisting of two aeration tanks hydraulically connected to an alternating pair of sludge recycling and settling tanks.
The Town of Del Norte’s collection system had significant structural issues including collapsed clay pipes, cracks, and offset joints. Our team was retained by the town to assess, plan, fund, design, bid and provide construction administration for a system-wide collection system improvement project.
Center Sanitation District was struggling for years with a non-compliant lagoon system. The existing facility had chronic BOD, TIN, and E. Coli violations of their groundwater discharge permit. Our team was tasked with creating a long-term financially sustainable solution for the district that didn’t break the bank.
The existing counterweight on the 7B conveyor had a winch system with inadequate lug connections and was rigged at an improper angle, which created structural integrity issues. Bowman prepared an economic trade-off study and general arrangements for counterweight lifting methods.
The client was looking for a safer and more efficient way to transfer ore to the main course ore bin. Bowman produced general arrangements and mechanical drawings for the project.
Project objective was to evaluate existing capacity of ceiling beams for trolley and hoist system designed to remove and install belt feeder motors to a roof opening area. Bowman provided a load rating and lifting plan for the belt feeder motors.
Bowman provided engineering services for a construction drawing package for access road grading and drainage improvements. The haul roads were severely damage during storm events so collection, conveyance channels, sediment traps and culverts were designed to manage a 25-year, 24-hour storm event.
Based on previous wash settler design experience, Bowman was uniquely qualified to do a feasibility study (FS) design for a new solvent extraction (SX) plant at a different operation for the Sierrita Mine. The project required a closely coordinated team of process, mechanical, civil, structural and electrical engineers.
Bowman provided construction engineering services. Because of changes in the planned use of the AB-BC Tailings storage facility, the diameter of the slurry distribution pipes were reduced from 18” to 12”. This and other changes were implemented in the pump set ups. These changes resulted in overall improved decant system efficiency.