McClure and Sons, Inc.

 West Point Digestion System involves mechanical, electrical, instrumentation   and controlsystem upgrades to improve the wastewater solids digestion   system. The work includesinstallation of: a digester feed preheat loop   and heat exchanger; digester feed flowmeters; digester liquid level   sensors; Digester 4 and 5 gas flow transmitters; grinders;and valves and  actuators to enable Digester 6 to be used as an active  digester.Improvements are located all over the West Point Treatment   Plant. Some mechanicaland piping work will involve connections into   'live' digested sludge lines. Constructionmust be performed during   specific, short timeframes while the solids system is taken outof   service to minimize the risk of system upset. The work also includes   extensivemodifications to the hardware and software of existing   operational Programmable LogicControllers (PLCs). Work also involves   digester gas piping systems on Digesters 4 and5. Digester gas   constituents are primarily methane (approximately 55%) and carbondioxide   (approximately 40%).