REPORT TO COUNCIL
SUBJECT
Title
Amend an Existing Agreement with Synagro-WWT for Dredging and Dewatering of solids at the Water Pollution Control Plant (F18-287)
Report
REPORT IN BRIEF
Approval is requested to amend an existing contract with Synagro-WWT, Inc. for dredging and dewatering of solids at the Water Pollution Control Plant (WPCP), increasing the not-to-exceed to $10,700,000 and extending the term of the agreement through June 30, 2019.
EXISTING POLICY
Pursuant to Section 2.08.040 of the Sunnyvale Municipal Code, City Council approval is required for the procurement of goods and services exceeding $100,000 in any one transaction.
ENVIRONMENTAL REVIEW
The proposed project is categorically exempt from environmental review pursuant to the California Environmental Quality Act (CEQA) pursuant to CEQA Guideline Section 15301 as it consists of maintenance of an existing public facility involving negligible or no expansion of capacity.
BACKGROUND AND DISCUSSION
The wastewater treatment process at the Sunnyvale Water Pollution Control Plant (WPCP) produces bio-solids, organic matter that is separated from wastewater, in two areas of the treatment process: Oxidation Ponds where bio-solids settle to the bottom; and Digesters which stabilize the solids settled from the primary treatment process. From the inception of the WPCP in 1956 through 2009, the solids settled in the Oxidation Ponds and had never been removed, thereby filling up the ponds and reducing the treatment capacity. Beginning in 2009, the City contracted with Synagro-WWT, Inc. to dredge the ponds and dispose of the bio-solids (RTC No. 09-291). Since the ponds are an active treatment system, the rate of dredging is managed to not upset the biology and ecology of the ponds, which requires spreading the operation throughout the year and over several years.
On the second solids processing area, the digester solids are further dried over tile beds and hauled off for disposal. In 2015, as part of the...
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