Repair of Eroded Slopes at the Robert B. Diemer Water Treatment Plant (Diemer Plant) Project
Summary
SCH Number
2005108620
Public Agency
Metropolitan Water District of Southern California
Document Title
Repair of Eroded Slopes at the Robert B. Diemer Water Treatment Plant (Diemer Plant) Project
Document Type
NOE - Notice of Exemption
Received
Posted
10/27/2005
Document Description
As a result of heavy rains during the 2004/2005 season, an approximately 40,000 square foot section of the north slope supporting Basin No. 8 and an approximately 15,000 square foot section of the south slope adjacent to the West Southern Pad at the Diemer Plant have experienced erosion. The erosion must be repaired under a directive from the Division of Safety of Dams (DSOD). The north slope is under DSOD jurisdiction as it provides support for Basin No. 8. The south slope needs repair because the eroded area is immediately adjacent to the blowoff structure for the Yorba Linda Feeder Bypass pipeline and may cause damage to this structure if it is not repaired. The proposed project involves removing existing soil, backfilling and recompacting the soil, and hydroseeding all affected areas. Some ruderal vegetation, two small walnut trees, and one pepper tree will be removed as a result of project activities.
Contact Information
Name
Jeff Ford
Agency Name
Metropolitan Water District of Southern California
Contact Types
Lead/Public Agency
Phone
Location
Counties
Riverside
Regions
Unincorporated
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
Section 15301
Reasons for Exemption
The proposed action consists of the operation, repair, maintenance, permitting, leasing, licensing, or minor alteration of existing public or private structures, facilities, mechanical equipment, or topographical features, involving negligible or no expansion of use beyond that existing at the time of the lead agency's determination.
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