Installation procedures monitoring wells

Several methods are available for the drilling and installation of monitor wells. The advantages and disadvantages relating to ease of construction, character of formations penetrated, well diameter and depth, risks of contamination, and intended use of the well have been reported by several investigators ( 5, 6, 7). All field personnel should be thoroughly familiar with well specifications, quality assurance/quality control procedures, and safety plans and requirements prior to installation of monitor wells. 

Suction lysimeters are required for some field-scale groundwater monitoring studies to monitor the transport of compounds of interest through the unsaturated zone. Unlike monitoring wells or water supply wells that sample water from the saturated zone, suction lysimeters sample water from the unsaturated zone. This section provides a summary of the installation and sampling procedures for pressure-vacuum suction lysimeters. A detailed discussion of unsaturated zone sampling devices is available elsewhere. 

For the purpose of verification, the list of agreed on-site monitoring instruments, if any, as well as agreed conditions, procedures for use, maintenance, repair, modification, replacement and provisions for the inspected State Party s support, if required, installation points, and security measures to prevent tampering with such on-site monitoring instruments are contained in Part D of Attachment 5. 

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