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171-90 <br /> GROUNDWATER MONITORING WELL DEVELOPMENT <br /> Following completion of the well construction, the wells were developed. Development of <br /> the wells consisted of balling and swabbing consecutively until it was determined that the <br /> i majority of sediment and fine grained soil from the well and formation adjacent to the <br /> f„ well screen was removed. The development process, time intervals and amount of well <br /> development water removed varied depending on the aquifer formation encountered. <br /> Waste water produced during the development was place in 17H Model 55 gallon steel <br /> drums, and later removed from the site by H and H Vacuum Service. <br /> �{r <br /> 9731 <br /> i. <br /> � ? METHOD AND CONTAINER USED TO COLLECT GROUNDWATER SAMPLE <br /> 79 <br /> iL Water samples were collected to determine if the groundwater had been Impacted by fuel <br /> contamination. The samples were collected using disposable 1.7" x 36" acrylic bailers. <br /> .g The wells were purged of groundwater 4 to 5 times the well volume. A time Interval of <br /> 30 minutes elapsed to allow the well to stabilize before Inserting the bailer into the well <br /> I ; <br /> t.71 <br /> and collecting a sample. The sample was placed into two 40 rnl. V.O.A. glass containers. <br /> IV <br /> The samples were transported in a sealed Ice chest maintained with blue ice at a <br /> temperature of 4 degrees Celsius/39.2 degrees Fahrenheit, along with a thermometer <br /> and laboratory prepared travel blanks. <br /> 13 <br />