Confidential client in SE Arizona commissioned Bowman to conduct construction quality assurance (CQA) for articulated concrete blocks (ACB’s) installed in reclaimed mine areas for spillway down chutes. Verified installation of subgrade, geotextile, filter layer, geogrid, mats, concrete grout lines and anchor trenches to meet manufacturer’s specifications.
Bowman provided engineering services for the detail engineering for the Heavy-Duty Truck Shop (HDTS) traffic area grading and a new truck wash rack to replace existing inadequate infrastructure.
A mile-long concrete channel was constructed at the ASARCO Ray Mine to convey contact water from the Mineral Creek outlet downstream near the mine entrance. A mile-long concrete channel was constructed at the ASARCO Ray Mine to convey contact water from the Mineral Creek outlet downstream near the mine entrance.
Bowman provided construction management, quality assurance, plant commissioning and coordination between contractors during the commissioning and start-up phase.
Bowman was contracted to scan historic drawings and organize drawing files for easy retrieval using laptops and notepads in the field. Our team migrated existing drawing storage system into BIM 360 input meta-data to allow for easy retrieval of information.
Bowman is providing construction management services that includes mechanical dredging of approximately 1M cubic yards of sediment, haulage, and disposition of dredged materials to a stockpile area 1.75 miles from the reservoir dam.
PLS is stored in a stainless steel lined concrete tank at the ASARCO Ray Mine. During construction, the tank was inspected by several techniques but approximately 35 leaks were detected and attributed to defective and substandard welds. Bowman was asked to inspect and catalog the weld where leaks developed and to work with a specialized welding firm to implement a plan to repair the tank permanently.
Bowman was commissioned to perform a geotechnical/foundation, structural/framing and plumbing investigation to address observed deteriorating and distressed conditions of the house.
Bowman provided construction quality assurance (CQA) services. The project includes site preparation, utility abandonment, earthwork for the stability buttress, Gila and San Pedro River crossings, constructed drainage to the emergency ponds and emergency channel, storm water management systems, and other improvements.
Bowman provided designs and documentation services. including review of existing drawings and project information, engineering calculations, process and instrumentation drawings, process flow diagrams, piping/mechanical drawings, sections details, mechanical equipment list and specifications and electrical and instrumentation controls.