Golden State Water Company, Dace #2 Manganese Treatment Facility construction and Operation, Norwalk Water System
Summary
SCH Number
2017108121
Public Agency
State Water Resources Control Board
Document Title
Golden State Water Company, Dace #2 Manganese Treatment Facility construction and Operation, Norwalk Water System
Document Type
NOE - Notice of Exemption
Received
Posted
10/5/2017
Document Description
The State Water Resources Control Board as the lead agency will be issuing a water supply permit. The Golden State Water Company proposes to install improved treatment of manganese for an existing water supply well that has been out of service since January 20, 2016. Treatment facilities will be a 2000 gallon per-minute manganese treatment system with dimensions of 30 ft L x 23.5 ft W, and a 44,000 gallon capacity backwash storage tank with dimensions of 25 ft. D x 17 ft H. The sludge from the backwash process will be contained in a tank and allowed to settle without settling agents or coagulants. A majority of the clear backwash will be recycled to the plant for treatment. Project construction will include approximately 300 LF of new pipeline.
A small amount of sludge that settles out from the backwash process will be removed no more than two times a year, and the sludge will be tested prior to removal to ensure it is not hazardous. A certified waste hauler would remove the sludge from the tank and dispose of it properly. The filter backwash is non-hazardous.
Contact Information
Name
Chi P. Diep
Agency Name
State Water Resources Control Board
Contact Types
Lead/Public Agency
Phone
Location
Cities
Norwalk
Counties
Los Angeles
Cross Streets
Dace Street and Markdale Avenue
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
class 1,3; S: 15301, 15303
Reasons for Exemption
The project involves operation of parts of an existing facilities, and minor alteration of existing public or private structures, involving negligible or no expansion of use beyond that existing at the time of the lead agency's determination. The project consists of new construction and operation of small new tanks, equipment less than 2,500 square feet, and not involving the use of significant amounts of hazardous substances.
Disclaimer: The document was originally posted before CEQAnet had the capability to host attachments for the public. To obtain the original attachments for this document, please contact the lead agency at the contact information listed above.