WASTEWATER PLANT ANAEROBIC DIGESTER CLEANOUTS AND RESIDUALS DISPOSAL

2026-11-03

The City of Gastonia ( the “ City ”) is soliciting proposals from qualified vendors to provide professional anaerobic digester cleanout and residuals disposal services in support of two of the City ’ s Wastewater Treatment Plants . This project is distinct from routine dewatering and requires specialized removal , processing , and disposal of accumulated heavy material including , but not limited to , grit , rags , non - organic trash , and anthracite media . The work defined in the scope of services is for all materials , labor , personnel , and equipment necessary for the removal , handling , transportation , and disposal of materials from the City ’ s anaerobic digesters . Wastewater Treatment Division personnel will direct operations by coordinating schedules for the services between the contractor and City staff . The objective of this contract is to provide cost effective digester cleanouts and disposal of digester material . The City anticipates the need to clean one to two ( 1 – 2 ) digesters per year for the next three ( 3 ) years . The City seeks a three - year contract , with options for two one - year extensions at the City ’ s discretion . The practices used must adhere to all local , City , regional , state and federal policies and regulations related to handling , transportation , and disposal of material . It is the intent of the City that implementation of this contract will take place in May 2026 . Contractor Provided Services 1 . 1 . The City anticipates the need to clean one to two ( 1 – 2 ) digesters per year during the contract period . To facilitate planning , the City will provide an initial written notice of its intent to schedule a cleanout event . Following this notice , the City and the Contractor shall determine a mutually agreeable timeframe for the commencement of work , with the goal of mobilizing the Contractor ’ s personnel and equipment to the site in an efficient manner that aligns with both the City ’ s operational needs and the Contractor ’ s specialized equipment availability . 1 . 2 . Contractor shall provide equipment and personnel with contact information to complete all activities needed to clean the designated digester ( s ) and dispose of residuals at a landfill that has been pre - approved by the City to receive the residuals . All associated landfill fees will be paid by the contractor . 1 . 3 . The contractor shall be responsible for any fuel needed for operation of equipment beyond the City provided electrical and water service . 1 . 4 . The Contractor is responsible for preparing the residuals for disposal using a dewatering process that will produce a product that is acceptable for hauling and also acceptable to the landfill receiving the dewatered residuals . The material shall pass a paint filter test . 1 . 5 . The Contractor shall be solely responsible for all aspects of confined space entry required to complete the job . This includes providing all necessary personnel , training , and specialized equipment — such as gas monitors , tripod retrieval systems , blowers , and harnesses — required for safe entry and exit . All entries must be performed in strict accordance with OSHA regulations and the Contractor ’ s own written safety program . 1 . 6 . The Contractor shall ensure residuals are transported in such a manner to prevent leakage / spills occurring from transport vehicles . 1 . 7 . The Contractor will be responsible for adherence to any and all regulations or guidelines involving the processing , transportation and / or disposal of the residuals . 1 . 8 . Contractor shall prepare all work , loading , and residuals storage areas with adequate containment needed to ensure spills and / or runoffs are properly contained . All removed materials and residuals shall be protected from precipitation to prevent the introduction of additional water and to minimize the potential for runoff . These containment and protection measures must be maintained throughout the duration of the cleanout events . 1 . 9 . The Contractor shall assist the City with selection of a disposal site that ensures timely removal schedules at cost effective rates . The Contractor shall also assist as requested by the City in the certification and approval process for disposal of the residuals at the selected site . For the Long Creek WWTP , the most recent TCLP was collected on February 11 , 2026 , and active special waste profiles are established and valid through September 25 , 2026 , for both the CMS Landfill and the Caldwell County Landfill . Regarding the Crowders Creek WWTP , the most recent TCLP was collected on February 11 , 2026 ; while no special waste profiles are currently in place for this facility , the City is prepared to provide this analytical data to the awarded contractor to facilitate the application process . The awarded contractor will be responsible for utilizing the City - provided TCLPs , typically completed annually , to establish any necessary new special waste profiles or additional alternative disposal sites .

North Carolina

2026-05-08