F.E. Weymouth and Hanry J. Mills Treatment Plants Enhanced Bromate Control Systems, Final Design
Summary
SCH Number
2013068262
Public Agency
Metropolitan Water District of Southern California
Document Title
F.E. Weymouth and Hanry J. Mills Treatment Plants Enhanced Bromate Control Systems, Final Design
Document Type
NOE - Notice of Exemption
Received
Posted
6/21/2013
Document Description
The Project proposes to develop final design to construct a new aqueous ammonia tank farm at the Weymouth plant and provide upgrades and modifications to the existing aqueous ammonia tank farm at the Mills plant. Construction activities at the Mills plant include modifications and upgrades to the existing aqueous ammonia tank farm and ammonia injection system. Piping construction associated with the new construction and modifications include: adding new chlorine gas lines and diaphragm valves; modifying chlorine ejectors; and relocating the chlorine diffuser. Work will also include modification to the plants' control systems, instrumentation, utility piping, chemical trenches, and chemical leak detection system.
Contact Information
Name
Brenda Marines
Agency Name
Metropolitan Water District of Southern California
Contact Types
Lead/Public Agency
Phone
Location
Cities
La Verne, Riverside
Counties
Los Angeles, Riverside
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
15301, 02, 06 - Class 1, 2, & 6
Reasons for Exemption
The proposed project consists of operation, repair, maintenance, permitting, leasing, licensing, or minor alteration of exisitng public or private structures, facilities, mechanical equipment, or topographic features, involving negligible or nor expansion of use beyond that existing at the time of the lead agency's determination. The proposed project consists of replacement or reconstruction of existing structures and facilities where the new structure will be located on the same site as the structure replaced and will have substantially the same purpose and capacity as the structure replaced. Basic data collection.
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