Agenda Item Wording:
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Authorize the City Manager to amend the not to exceed amount of the contract with Denali Water Solutions for the removal and disposal of biosolids produced at the Visalia Water Reclamation Facility from $220,000 to $280,000 and appropriate an additional $83,500 from the Wastewater Fund (431).
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Deadline for Action: 4/17/2023
Submitting Department: Public Works
Contact Name and Phone Number:
Wyndi Ferguson, Public Works Manager, wyndi.ferguson@visalia.city, (559) 713-4186
Nick Bartsch, Public Works Director, nick.bartsch@visalia.city, (559) 713-4052
Department Recommendation:
Authorize the City Manager to amend the not to exceed amount of the contract with Denali Water Solutions for the removal and disposal of biosolids produced at the Visalia Water Reclamation Facility from $220,000 to $280,000 and appropriate an additional $83,500 from the Wastewater Fund (431).
Background Discussion:
In December of 2022 City Council approved a 6-month extension of the contract with Denali Water Solutions for the annual removal and disposal of the biosolids from the Water Reclamation Facility (WRF) with a not to exceed amount of $220,000 and appropriated $100,000 from the Wastewater Fund to cover the estimated expense.
As stated in the WRF Waste Discharge Requirements (WDR), biosolids can only be kept onsite for a period of 2 years, and the current stockpile had to be removed no later than December 31, 2022. There is no way to determine the exact tonnage until the material is hauled off and weighed, so staff estimated 2,250 tons based on the average over the last three years, at a cost of $72 per ton.
Denali had removed over 2,000 tons by the end of December, however, a large amount of material remained to be removed. In order to remain in compliance with the WDR, Denali was given the go ahead to continue hauling until which time inclement weather caused the area to become unsafe to operate in. Denali was able to safely return at the end of January and completed the job within 2 weeks. A total of 3,846.94 tons of material were removed.
Fiscal Impact:
This service is budgeted annually and currently has $193,500 available. However, due to the increased tonnage, the budget is estimated to be short approximately $83,500. Staff is requesting to increase the budget in the WRF Bio Solids division (4336-55700) by $83,500 to cover the additional expense.
Prior Council Action:
December 5, 2022
Authorize the City Manager to extend the contract with Denali Water Solutions for the removal and disposal of biosolids produced at the Visalia Water Reclamation Facility for a period of six (6) months for an amount no to exceed $220,000 and appropriate an additional $100,000 from the Wastewater Fund.
Recommended Motion (and Alternative Motions if expected):
recommendation
That City Council authorize the City Manager to amend the not to exceed amount of the contract with Denali Water Solutions for the removal and disposal of biosolids produced at the Visalia Water Reclamation Facility from $220,000 to $280,000 and appropriate an additional $83,500 from the Wastewater Fund (431).
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Attachments:
Denali Water Solutions Invoices