One Phase 1A Multipurpose Basin (Streambed Alteration Agreement EPIMS Notification No. PLA-39468-R2)

17 Documents in Project

Summary

SCH Number
2016112012
Lead Agency
Placer County
Document Title
One Phase 1A Multipurpose Basin (Streambed Alteration Agreement EPIMS Notification No. PLA-39468-R2)
Document Type
NOD - Notice of Determination
Received
Posted
9/20/2023
Document Description
The project is limited to the grading and construction of a multipurpose storm water basin with a storm water outfall in a 5.3-acre area within the PRSP area that discharges to University Creek, an ephemeral drainage. The multipurpose basin is further delineated as ‘Basin F1’ and ‘Basin F2.’ Basin F1 will include a 36-inch outfall with trash rack and riprap. Basin F1 will be constructed with six-inch perforated subdrains roughly 15-feet apart under the basin floor and have a 10-foot-wide emergency spillway. Storm water intercepted by Basin F1 via the 36-inch storm drain will move north into Basin F2 via a connection to a 60-inch storm drain also connected to the development area south of Sunset Boulevard. Basin F2 will include three riprap dissipation pads and 36-inch outfalls with trash racks. From Basin F2, treated storm water will be discharged to the ephemeral drainage via a 42-inch outfall and vegetated swale having a two-foot-wide bottom, 3:1 slopes, and a 0.25% grade. The outfall will include an emergency spillway and riprap dissipation pad. Basin F2 will be divided into three sub-basins connected by 18-inch equalization culverts, and the sub-basin closest to the ephemeral drainage will be constructed with six-inch perforated subdrains roughly 15-feet apart under the basin floor.

Contact Information

Name
Mary Xiong
Agency Name
California Department of Fish and Wildlife
Job Title
Senior Environmental Scientist Specialist
Contact Types
Responsible Agency

Location

Counties
Placer
Regions
Northern California
Cross Streets
Sunset Boulevard and Fiddyment Road
Waterways
University Creek and Pleasant Grove Creek

Notice of Determination

Approving Agency
California Department of Fish and Wildlife
Approving Agency Role
Responsible Agency
Approved On
County Clerk
Placer
Final Environmental Document Available at
CDFW's regional office

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
Yes
(2b) A Mitigated or a Negative Declaration was prepared for this project pursuant to the provisions of CEQA
No
(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
No
(5) A Statement of Overriding Considerations was adopted for this project
No
(6) Findings were made pursuant to the provisions of CEQA
Yes

Attachments

Notice of Determination

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