FROM: Robert Thompson, General Manager
Originator: Kathy Millea, Director of Engineering
SUBJECT:
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URBAN RUNOFF OPTIMIZATION STUDY, PROJECT NO. PS21-06
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GENERAL MANAGER'S RECOMMENDATION
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RECOMMENDATION:
A. Find that the Urban Runoff Optimization Study, Project No. PS21-06 is exempt from CEQA under the statutory exemptions set forth in California Code of Regulations Section 15262 and authorize staff to file a Notice of Exemption with the OC Clerk-Recorder;
B. Approve a Professional Services Agreement with Michael Baker International, Inc. to provide engineering services for the Urban Runoff Optimization Study, Project No. PS21-06, for an amount not to exceed $711,230; and
C. Approve a contingency of $71,123 (10%).
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BACKGROUND
Treated effluent from Orange County Sanitation District's (OC San) Plant Nos. 1 and 2 is delivered to the Orange County Water District (OCWD) Groundwater Replenishment System (GWRS) for advanced treatment and purification, followed by storage in the Orange County groundwater basin. With the GWRS Final Expansion Project complete, OC San will be delivering up to 175 million gallons per day (MGD) of high-quality treated wastewater so that the OCWD GWRS facility can produce 130 MGD of highly purified water, which is an important element of the local water supply.
Since 2000, OC San has accepted the diversion of dry weather urban runoff to the sewer to assist Municipal Separate Stormwater Sewer System permittees in addressing various public health or environmental issues that are difficult to control through traditional stormwater best management practices. In June 2013, the OC San Board of Directors adopted Urban Runoff Resolution No. OCSD 13-09, which expanded the waiver of fees or charges on the treatment of dry weather urban runoff from 4 to 10 MGD. This latest policy allows for additional flows to help remediate other environmental problems. OC San continues to work closely ...
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