A. Containment and Disposal of Water – Due to the well exhibits flowing conditions, containing the water during the well inspection and subsequent destruction process will be necessary. Water shall be directed to a holding tank of sufficient size so as not to flood the area while working. The contained water should be allowed to settle prior to disposal at the site. The Contractor shall coordinate with the Plant Operations team at the Wastewater Treatment Plant (WWTP) to determine acceptable flow rates into the Plant and any necessary water sampling prior to discharge into the sanitary sewer. All contained water will be disposed of at the WWTP using facility infrastructure such as a sanitary sewer manhole near the well. B. Inspection – a down-hole camera shall be deployed to determine the current conditions, confirm there are not down-hole obstructions, and verify the screen sections of the well. The inspection shall also help determine the casing sections that may need perforating prior to grout placement. Additional data to collect using a separate downhole sonde shall be a cement bond log to determine surface seal, and flow log to determine the zone that is creating the artesian conditions. C. Perforate Well Casing – Based on the results of the inspection above, perforating may be necessary to allow grout to infiltrate the boring annulus and gravel pack. The sections for the casing to be perforated will be determined following the Inspection in Section A. Casing perforation may be performed by using a Mills knife, cutting wheel, or other appropriate means, including string charges, if necessary. 1. If string charges is necessary, the Contractor shall submit a string Charge Plan for CDCR approval. The Plan shall describe steps that will be taken to ensure that contaminants are not introduced into groundwater during well destruction. The Plan shall also include Safety Data Sheets (SDS) of the constituents of the proposed explosives. The Contractor shall proceed once approval has been provided by CDCR and the Lahontan Regional Water Quality Control Board (RWQCB).
