Title
Thermal Hydrolysis Process Design Contract Amendment
Action
Action:
Approve contract amendment #1 for $1,938,084 to the contract with PC Construction Company for the McAlpine Creek Wastewater Treatment Plant Thermal Hydrolysis Process and Biosolids Improvements Project.
Body
Staff Resource(s):
Angela Charles, Charlotte Water
David Czerr, Charlotte Water
Chuck Bliss, Charlotte Water
Explanation
§ This contract is for design and preconstruction services, including development of a guaranteed maximum price for construction for a thermal hydrolysis process (THP) system at the McAlpine Creek Wastewater Treatment Plant, located in the Town of Pineville (adjacent to Council District 7).
§ THP is an enhanced biosolids treatment process that destroys pathogens and reduces the volume of biosolids. This process supports the city’s Strategic Energy Action Plan goals by enhancing biogas production and on-site energy generation.
§ On November 14, 2022, City Council approved a contract with PC Construction Company for $14,145,000 for design and pre-construction services for this project.
- Contract amendment #1 is needed to fund additional and pre-construction services that are required to upgrade existing infrastructure.
- The need for the additional services was not know prior to project design competition.
§ The new total value of the contract including contract amendment #1 is $16,083,084.
Charlotte Business INClusion
The city negotiates contract participation for Design-Build contracts after scopes of work are defined for design and construction services. PC Construction Company has committed $159,000 or 8.20% of the total contract amendment for design and construction services to the following certified firm(s):
§ Stewart Engineering, Inc. (MBE) ($112,000) (surveying, SUE)
§ Froehling & Robertson, Inc. (MBE) ($47,000) (geotechnical services)
Fiscal Note
Funding: Charlotte Water Capital Investment Plan