FROM: Robert Thompson, General Manager
Originator: Mike Dorman, Director of Engineering
SUBJECT:
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TRUCK LOADING BAY ODOR CONTROL IMPROVEMENTS AT PLANT NO. 2, PROJECT NO. P2-140
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GENERAL MANAGER'S RECOMMENDATION
recommendation
RECOMMENDATION: Recommend to the Board of Directors to:
A. Approve a Professional Design Services Agreement with CDM Smith, Inc., to provide engineering services for Truck Loading Bay Odor Control Improvements at Plant No. 2, Project No. P2-140, for an amount not to exceed $899,800; and
B. Approve a contingency of $89,980 (10%).
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BACKGROUND
Orange County Sanitation District (OC San) Plant No. 2 Solids Storage and Truck Loading facility was built in 2000 and consists of two biosolid storage bins and two truck loading bays. This facility stores biosolids produced from the solids dewatering process and loads them onto trucks for transport. Odors from the storage bins and the dewatering process are treated using biofilters and odors from the truck loading bays are treated using chemical scrubbers. These odor control systems were installed in 2019. At the same time, fast-opening roll-up doors were added to the north end of each loading bay. At that time, it was assumed that ocean winds typically blew from the south. As a result, doors were not installed on the south end, since odors were not expected to escape in that direction. The open south end of each loading bay was also intended to provide fresh air to support the chemical scrubber system.
RELEVANT STANDARDS
* Comply with California Government Code Section 4526 to engage the best qualified firm "on the basis of demonstrated competence and qualifications" and "negotiate fair and reasonable fees"
* Operate and maintain facilities to minimize impacts on surrounding communities, including odor, noise, and lighting
* Safe, beneficial reuse of Biosolids
PROBLEM
Despite the installation of chemical scrubbers and a north side door in 2019, OC S...
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