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STANDARD OPERATING PROCEDURE <br /> MONTORING WELL DEVELOPMENT <br /> 1. INTRODUCTION <br /> 1.1 Overview <br /> This standard operating procedure (SOP) describes the protocol to be followed during the <br /> development or redevelopment of monitoring wells. The field form for monitoring well <br /> development is included with this SOP. <br /> 1.2 Objective <br /> The objectives of monitoring well development are to remove sediment that may have <br /> accumulated during well installation, to consolidate the filter pack around the well screen, and to <br /> enhance the hydraulic connection between the target zone and the well. The objective of <br /> monitoring well redevelopment is to remove build-up of sediments within a monitoring well to <br /> ensure hydraulic communication between the geologic formation and the entire well screen, and <br /> to improve the yield of the well. <br /> 1.3 Equipment <br /> The following equipment will be used during well development: <br /> • Personal Protective Equipment (PPE) and air monitoring equipment per the HASP; <br /> • submersible pump or equivalent pump; <br /> • bailer; <br /> • surge block; <br /> • container for purge water (e.g. drums); <br /> • container with known volume (e.g., five-gallon bucket) for flow estimation; <br /> • water level indicator; <br /> • stopwatch or timer; <br /> • turbidity meter; <br /> • well development record form (included in SOP); <br /> • field log book; and <br /> • pens. <br />