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1 <br /> ENVIRONMENTAL SCIENCE& ENGINEERING, INC. <br /> CONCORD,CALIFORNIA OFFICE <br /> STANDARD OPERATING PROCEDURE NO.2 <br /> FOR MONITORING WELL INSTALLATION AND DEVELOPMENT <br /> PAGE 2 <br /> rtechnician will monitor the ground water purged from the well during development for clarity,temperature,pH <br /> and conductivity. Development of the well will proceed until,the well produces relatively clear,sand-free water <br /> ' with stable temperature.pH and conductivity measurements. At a minimum,10 well-casing volumes of ground <br /> water will be removed during the development process. Mcasem <br /> nremeats of temperature,Conductivity,pH and <br /> volume of the purged water and observations of purge water clarity and sediment content will be recorded on <br /> r the ESE Well Development Data Forms. All equipment used during the well development procedure will be <br /> cleaned using an Aleonox+detergent and tap water solution.followed by a tap water rinse prior to use in each <br /> well. Ali ground water purged during the well development process and all equipment rinse water will be <br /> collected and contained onsite in DOT approved containers(typically SS-gallon drums)pending analytical results <br /> ' and proper disposal or ree7din& <br /> r <br /> r <br /> 1 <br /> r <br /> 1 <br /> r <br /> 1 <br /> r <br /> r <br />