Aboveground Storage Tank Vapor Recovery System Retrofit Project at Robert B. Diemer Water Treatment Plant and Diamond Valley Lake

Summary

SCH Number
2014028223
Lead Agency
Metropolitan Water District of Southern California
Document Title
Aboveground Storage Tank Vapor Recovery System Retrofit Project at Robert B. Diemer Water Treatment Plant and Diamond Valley Lake
Document Type
NOE - Notice of Exemption
Received

Document Description
Metropolitan proposes to retrofit two aboveground gasoline storage tanks (ASTs) at the Robert B. Diemer Water Treatment Plant (6,000-gallon tank) and Diamond Valley Lake (2,000-gallon tank) with an enhanced vapor recovery (EVR) system to comply with air quality regulations. The project involves installation of an emergency vent, spill container and drain valve, drop tube with overfill prevention, vapor adaptors and dust caps, product coupler, and port for tank gauging with drop tube and caps/adaptors on each AST.

Contact Information
Jennifer Harriger
Metropolitan Water District of Southern California
P.O. Box 54153
Los Angeles, CA 90054-0153

(213) 217-7658

Location

Cities
Yorba Linda
Counties
Riverside Orange

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
S:15301, 15303, Class 1, 3
Reasons for Exemption
The proposed project consists of the operation, repair, maintenance, permitting, leasing, licensing, or minor alteration of existing public or private structures, facilities, mechanical equipment, or topographic features, involving negligible or no expansion of use beyond that existing at the time of the lead agency's determination. The proposed project consists of construction and location of limited numbers of new, small facilities or structures; installation of small new equipment and facilities in small structures; and the conversion of existing small structures from on another where only minor modifications are made in the exterior of the structure.
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