Grizzly Creek Weir Modification Project
Summary
SCH Number
2007078133
Public Agency
State Water Resources Control Board
Document Title
Grizzly Creek Weir Modification Project
Document Type
NOE - Notice of Exemption
Received
Posted
7/10/2007
Document Description
PG&E proposes modifications to the existing Grizzly Weir measuring structure (PG&E gage NF22), located on Grizzly Creek approximately 300 feet downstream of Grizzly Forebay Dam, on lands within the Plumas National Forest. The weir will be reconstructed to provide accuracy in measuring the minimum flow release increases required by Federal Energy Regulatory Commission (FERC) Order issued January 11, 2006, amending the Bucks Creek Project license (FERC No. 619). Work involves the diversion of streamflow around the center of the existing weir using a temporary cofferdam made from clean sandbags along with a corrugated plastic conduit bypass system. Creation of a dry construction zone will result in the temporary dewatering of approximately 50 feet of streambed immediately upstream of the weir location. During reconstruction of the measurement weir, minimum flow releases from Grizzly Forebay Dam to Grizzly Creek will be maintained for protection of the aquatic ecosystem in all but the limited area scheduled for temporary dewatering. Construction activities will include concrete cutting to enlarge the rectangular measurement notch in the weir, installation of a weir plate, and concrete patching of pervious areas of the existing weir expanse and wingwall structure. All construction debris will be removed from the creek drainage; affected channel and riparian zone areas will be restored after completion of the construction activities.
Contact Information
Name
Sharon Stohrer
Agency Name
State Water Resources Control Board, Division of Water Rights
Contact Types
Lead/Public Agency
Phone
Location
Counties
Plumas
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
Section 15301(b) and (d)
Reasons for Exemption
1. This project will not cause significant adverse impacts on any sensitive environment and will not result in significant cumulative impacts.
2. There are no state or federal threatened or endangered aquatic species known within a two-mile radius from the project site. To avoid potential risk of disturbance to local Bald Eagle breeding activities, construction activity will be delayed until after all fledging has been completed at the occupied nest approximately 0.75 mile from the site.
3. The project will not result in impacts that are significant when viewed in connection with the effects of past projects, the effects of other current projects, and the effects of probable future projects.
4. There are no known hazardous materials at or around the project site that may be disturbed or removed.
5. No long-term impacts to water quality or beneficial uses will result from this project.
6. There are no known cultural resource sites at or around the project site that may be disturbed or removed.
7. It appears that there is no possibility that this project may have a significant effect on the environment.
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.