MJ Stoyanov LSK Art Water Diversions and Stream Crossing (Notification No. 1600-2018-0749-R1)
384 Documents in Project
Summary
SCH Number
2016112028
Lead Agency
Mendocino County
Document Title
MJ Stoyanov LSK Art Water Diversions and Stream Crossing (Notification No. 1600-2018-0749-R1)
Document Type
NOD - Notice of Determination
Received
Posted
4/30/2019
Document Description
The project is limited to the upgrading of one stream crossing and two points of diversion.
The existing stream crossing is on a class II watercourse. The crossing either lacks a drainage structure or the structure is completely buried. The new culvert shall be installed to grade, aligned with the natural stream channel, and shall be long enough that it extends lengthwise completely beyond the toe of fill. Upgrading the crossing will require the excavation and temporary displacement of approximately 26 cubic yards of fill and 140 square feet of overall disturbance (35-feet long, 5-feet deep, 4-feet wide). The upgrading of this crossing may require the loss of a 16-inch DBH Douglas-Fir and other grasses, forbs, and ferns. Additionally, the stream crossing may be wet at all times of year which would require the installation of a temporary diversion structure. If needed, clean water above the work site will be isolated from the construction zone and transported around the work area so it can be discharged to the stream channel with minimal effects on the surface flow rates and water quality. Water generated within the construction area will be collected and transported off-site and discharged in a safe location where it can settle out sediment and not deliver contaminates to the watercourse.
Point of diversion 1 consists of two plastic bins placed in the channel of a class II watercourse. Surface water is diverted by gravity via a screened 1-inch polyline plumbed to a 2,500-gallon hard plastic water tank .. The water tank is located within the riparian zone of the class II watercourse and shall be removed and relocated outside the riparian buffer of 100-feet from the watercourse. The lower diversion structure will be removed from the stream and the upper bin shall be replaced with a concrete cistern that adheres to all measures of this Agreement.
Point of diversion 2 consists of one plastic 5-gallon bucket placed in the channel of a class II spring, which feeds a class II watercourse. Surface water is diverted by gravity via a screened 1-inch polyline to two 2.500-gallon hard plastic water tanks. This structure will be replaced or adapted to meet all measures of this Agreement.
Contact Information
Name
Cheri Sanville
Agency Name
Department of Fish and Wildlife Northern Region
Contact Types
Lead/Public Agency
Phone
Location
Counties
Humboldt
Other Location Info
The project to be completed is located within the Mad River watershed, in the
Showers Pass area at an unnamed tributary to Mad River, in the County of Humboldt, State of California; Latitude 40.602667, Longitude -123.690214, Assessor's Parcel Number (APN) 317-182~021.
Notice of Determination
Approving Agency
CDFW
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
No
(5) A Statement of Overriding Considerations was adopted for this project
No
(6) Findings were made pursuant to the provisions of CEQA
No
Attachments
Notice of Determination
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