Allen McColloch Pipeline Shutdown Project (Lake or Streambed Alteration Agreement No. 1600-2018-0058-R5)
Summary
SCH Number
2018038054
Public Agency
California Department of Fish and Wildlife, Region 5
(CDFW)
Document Title
Allen McColloch Pipeline Shutdown Project (Lake or Streambed Alteration Agreement No. 1600-2018-0058-R5)
Document Type
NOE - Notice of Exemption
Received
Posted
3/2/2018
Document Description
The California Department of Fish and Wildlife (CDFW) has executed Lake and Streambed Alteration Agreement number 1600-2018-0058-R5, pursuant to section 1602 of the Fish and Game Code to the Metropolitan Water District of Southern California (MWD).
The project is limited to stream impacts associated with the dewatering and shutdown of the Allen McColloch Pipeline to replace four broken valves within existing structures, and inspect the pre-stressed concrete cylinder pipe (PCCP). Replacement of the four broken valves will occur outside of stream areas. Dewatering of the pipeline is required during dry conditions to conduct the repairs and to inspect the interior of the pipes. Project activities in the stream areas include the placement of erosion control measures, and dewatering from 40 discharge locations. This will occur within various streams including Hicks Canyon Wash, Borrego Canyon Wash, Serrano Creek, Aliso Creek, and into various unnamed streams within Rattlesnake Canyon Wash, Orchard Hills, and Small grove, San Diego Creek and Santiago Creek. Dewatering methods include diverting treated water from the pipeline through a filtration system or dewatering hoses, and discharging the treated water to the stream areas.
Contact Information
Name
Mary Ngo
Agency Name
California Department of Fish and Wildlife, Region 5
Contact Types
Lead/Public Agency
Phone
Name
Agency Name
The Metropolitan Water District of Southern California
Contact Types
Project Applicant
Location
Cities
Irvine, Mission Viejo
Counties
Orange
Waterways
Allen McColloch Pipeline
Other Information
Lake Forest; U.S. Geological Survey 7.5 Minute Tustin and Lake Forest Quadrangles.
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
Class 1 - S: 15301
Reasons for Exemption
Consists of the operation, repair, maintenance, permitting, leasing, licensing, or minor alteration of existing public or private structures, facilities, mechanical equipment, or topographical features, involving negligible or no expansion of use beyond that existing at the time of the lead agency's determination
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. You may also contact the OPR via email at state.clearinghouse@opr.ca.gov or via phone at (916) 445-0613.