ARCADIS (EURONEXT: ARCAD), the international design, consulting, engineering and management services company, announced today that Malcolm Pirnie, a wholly-owned subsidiary of ARCADIS U.S. Inc. and its subconsultants, have been awarded a contract by the Los Angeles Department of Water and Power (LADWP) to provide preliminary design and procurement services for a 600 million gallon per day (MGD) ultraviolet (UV) disinfection facility at the Los Angeles Aqueduct Filtration Plant.
Once constructed the facility will be the largest UV facility in California and one of the largest in the United States. The $1.3 million contract will help the LADWP to comply with the Stage 2 Disinfectants and Disinfection Byproducts Rule (D-DBPR) and Long Term 2 Enhanced Surface Water Treatment Rule (LT2ESWTR).
"The addition of UV treatment demonstrates the City's commitment to a multiple barrier approach for disinfection," explains Pirnie vice president and project manager Dr. Chuck Wolf. "With this in mind, Malcolm Pirnie is excited to bring our industry-leading UV expertise and experience to this project."
Under the contract, Malcolm Pirnie will develop UV facility concepts and refine the alternatives to help the City make key UV facility decisions. In addition, the team will develop preliminary design of the selected alternative to facilitate transition to detailed design and obtain state permitting.
According to technical manager and UV expert Christine Cotton, UV disinfection is growing in popularity, especially in Southern California. "Utilities continue to struggle with disinfection byproducts (DBPs) as a result of using chlorine and UV is a very cost effective option to help reduce DBPs while improving overall disinfection."