Agenda Information Sheet
DEPARTMENT: Water Production
CM/ ACM: Mario Canizares, Utilities, 349-8560
DATE: July 10, 2017
SUBJECT
Title
Consider recommending approval of a "Professional Service Agreement (PSA)" with Garver, Inc. to perform a solids handling/dewatering study of the Lake Lewisville Water Plant filter backwash and sedimentation basin wash-down residuals; authorizing the expenditure of funds in an amount not-to-exceed $77,772.00 (File #6431).
Body
BACKGROUND
City of Denton Water Reclamation plant is experiencing constant issues processing the solids coming from the Lake Lewisville water treatment plant (LLWTP). The wastewater plant staff has requested immediate elimination of sludge/solids discharges into the wastewater collection system and thus into the wastewater treatment plant.
LLWTP staff is temporarily pumping all treatment plant solids from the equalization basin into the water treatment plant pond. The pond has limited capacity and a consultant study is needed to find a permanent solution for the solids handling issue.
RFQ INFORMATION
Requests for qualifications (RFQ) were issued to several local consulting firms with prior experience to perform a study and receive a recommendation and preliminary design for a permanent solids handling facility for the Lake Lewisville water treatment plant. Statement of qualifications were received from four (4) engineering firms. The Staff Screening and Selection Committee met March 22, 2017, to evaluate the qualifications. The Committee selected Garver, Inc., based on the proposal and selection criteria.
A formalized scope of work was developed by staff and the consultant submitted a quote in the amount $298,596.43 to provide preliminary engineering design for the solids handling facility. Staff negotiated with Garver and modified the scope to eliminate preliminary design and received a quote in the amount of $77.772.00. The PSA for the sludge dewatering study will include Project Manageme...
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