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Attachment P Monitoring Program Application Requirements Discuss the planned monitoring program. This should be thorough,including maps showing the number and location of monitoring wells as appropriate and discussion of monitoring devices,sampling frequency, and parameters measured. If a manifold monitoring program is utilized,pursuant to §146.23(b)(5), describe the program and compare it to individual well monitoring. The following program of well data acquisition and review is proposed for purposes of prudent well operation, early recognition of any developing problems, and compliance with regulatory agency requirements. These monitoring activities are to include the use of continuously recording devices to monitor the mechanical integrity of the well, and to record the physical conditions occurring at the well head during injection (temperature, pressure,flow rate). In addition,coordinated programs of inspections, samplings and analyses,tests,loggings, and reviews are described below,together with a schedule of the reports to be submitted. Approach Each of the various monitoring requirements applies equally to each injection well at the STIG-LEC facility. Therefore,the information in this attachment will be presented by monitoring type and not by individual well. Mechanical Integrity Monitoring/Reporting Program Continuously Recording Monitor Devices The mechanical integrity of the well will be monitored by the use of instrumentation devices that continuously record the annular pressure between the 4-1/2-inch tubing and the 7-inch casing above the packer. The annular space will be kept full with water and pressurized to a minimum of 100 psig with a pressurized receiver located at the wellhead. During each work shift,the water level in the receiver will be recorded by the operator,and the monitoring devices will be inspected and checked to confirm that they continue to operate properly. Daily and monthly minimum,average, and maximum values for these two parameters will be compiled monthly and reported quarterly. Annual Mechanical Inspection and Evaluation Each year, a program of mechanical inspection and evaluation will be performed. This consists of both mechanical integrity testing and annular pressure testing. Procedures SAC/371322/082560022(ATTACHMENT-RDOC) P-1