Arroyo Mocho Pump Station


SCH Number
Public Agency
Fish & Game #3
Document Title
Arroyo Mocho Pump Station
Document Type
NOE - Notice of Exemption
Document Description
LLNL proposes to fit the existing CMP outfall with a downturning pipe and elbow system to discharge the water at grade. The gully soil surface would also be reinforced with an erosion control blanket (Pyramat) from the headwall above the pipe outfall to approximately 100 feet down the ravine. Contractors in full body harnesses will work from the top of the bank to prepare the surface of the gully with hand tools. The gully will be smoothed with the hand tools so that the blanket will lie flat to prevent channeling under the blanket. The Pyramat, approximately 12 feet wide, would be applied only in the gully area and will be trimmed to avoid boulders or shrubs along the edges. To provide support for the concrete apron approximately 6 to 7 cubic yards of 12 inch boulders will be placed and grouted under the lower edge where it has eroded. This area is well above the channel of the Arroyo Mocho. Issuance of a Streambed Alteration Agreement Number R3-2001-0800 pursuant to Fish and Game Code Section 1601.

Contact Information

Greg Martinelli
Agency Name
Department of Fish and Game, Region 3
Contact Types
Lead/Public Agency



Notice of Exemption

Exempt Status
Type, Section or Code
Class 4, section 15304
Reasons for Exemption
Minor alteration ot land.

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 or via phone at (916) 445-0613.

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