Infiltration Gallery Intake Modification and Maintenance (Lake or Streambed Alteration Agreement No. 1600-2017-0661-R1)
Summary
SCH Number
2018018059
Public Agency
California Department of Fish and Wildlife, Region 1
(CDFW)
Document Title
Infiltration Gallery Intake Modification and Maintenance (Lake or Streambed Alteration Agreement No. 1600-2017-0661-R1)
Document Type
NOE - Notice of Exemption
Received
Posted
1/4/2018
Document Description
The project is limited to excavating and unburying the existing inlet to the 4" water diversion pipe, the construction of which was authroized in Agreement #1600-2011-0140-R1 and has become buried in 18 inches of sediment. Once the inlet pipe is uncovered, a 16' long length of perforated 6" PVC pipe will be installed on the inlet to extend the drafting tube farther into the river channel, thus minimizing the likelihood of the intake becoming buried in sediment and clogging the intake. Work must occur when river releases from Trinity Dam are at the winter base flow levels due to the depth of the water column along the bank where the pipe is located.
Contact Information
Name
Kate Blanchard
Agency Name
California Department of Fish and Wildlife, Region 1
Contact Types
Lead/Public Agency
Phone
Location
Coordinates
Counties
Trinity
Parcel #
APN 025-120-28-00
Waterways
Trinity River
Other Location Info
Lewiston
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
15301, Class 1
Reasons for Exemption
The project will restore original capacity of a previously permitted structure in order to maintain it in operating condition.
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