Streambed Alteration Agreement for Notification No. 1600-2004-0177-R5, for the Proposed Carlson Marsh Regrade Project (Project) located in Carlson Marsh (within
3 Documents in Project
Summary
SCH Number
2004041072
Lead Agency
Irvine Ranch Water District
Document Title
Streambed Alteration Agreement for Notification No. 1600-2004-0177-R5, for the Proposed Carlson Marsh Regrade Project (Project) located in Carlson Marsh (within
Document Type
NOD - Notice of Determination
Received
Posted
9/2/2004
Present Land Use
Open Space and Preservation
Document Description
CDFG is executing a Lake or Streambed Alteration Agreement (Agreement) pursuant to Section 1602 (SAA # 1600-2004-0177-R5) of the Fish and Game Code to the project applicant, Mr. Gregory K. Herr, Irvine Ranch Water District. The applicant proposes to alter the streambed and banks throught the implementation of the Carlson Marsh Regrade Project. The project proposes the construction or modification of berms, weirs, and culverts, construction of low flow channels, removal of invasive vegetation, and restoration of riparian habitat within Carlson Marsh (Marsh). The modification and construction of these weirs, culverts and low flow channels will allow for circulation of water through the Marsh in the dry season, to drain ponded water after a storm event, and to control water supply within the marsh. Treated (polished) creek water from the seasonal ponds will be introduced at the northern portion of the Marsh and conveyed through low flow channels to the southern portion of the Marsh and then re-circulated to the northernmost seasonal pond. The circulation of water in the marsh during the summer will achieve the project objectives of promoting vector control, restoring historic hydrologic conditions, and providing permanent open water habitat for resident and migratory wildlife. The modification and construction of the berms will also provide additional freeboard for protection of adjacent facilities during the 100-year storm event and provide for operation and maintenance activity. Carlson Marsh encompasses approximately 60 acres of the northwestern portion of the 580-acre San Joaquin Marsh and extends from Michelson Drive south to McArthur Boulevard.
Contact Information
Name
Donna Cobb
Agency Name
California Department of Fish and Game #5
Contact Types
Lead/Public Agency
Phone
Location
Cities
Irvine
Counties
Orange
Cross Streets
Campus Drive and Carlson Drive
Total Acres
~7.25
State Highways
405
Airports
John Wane
Waterways
San Diego Creek
Notice of Determination
Approving Agency
Department of Fish and Game
Approving Agency Role
Responsible Agency
Approved On
Determinations
(1) The project will have a significant impact on the environment
No
(2a) An Environmental Impact Report was prepared for this project pursuant to the provisions of CEQA
No
(2b) A Mitigated or a Negative Declaration was prepared for this project pursuant to the provisions of CEQA
Yes
(2c) An other document type was prepared for this project pursuant to the provisions of CEQA
No
(3) Mitigated measures were made a condition of the approval of the project
Yes
(4) A mitigation reporting or monitoring plan was adopted for this project
N/A
(5) A Statement of Overriding Considerations was adopted for this project
No
(6) Findings were made pursuant to the provisions of CEQA
Yes
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