WORK PLANS FILE 2 - Laserfiche WebLink

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I� the transition seal until the sand pack has stabilized at 5 feet above the top of well screen. A transitional seal will be placed from 125 to 120 feet which will consist of hydrated bentonite chips. From 120 feet to the surface the casing annulus will be filled with hydrated cement. To finish the installation , a traffic rated monitoring well box will be cemented into placed at surface level and the new monitoring well will be capped with a locking cap and lock. ii Monitoring Well MW- 18 will be built by placing a section of 0.020 slotted PVC casing into the bottom 10 feet of the boring . Then 10 foot threaded sections of Schedule 80 PVC blank well casing will be threaded together from 150 feet to the surface. Number 3 sand pack will be placed opposite the slotted casing and 5 feet above it and slowly surged and consolidated prior to placing the transition seal until the sand pack has stabilized at 5 feet above the top of well screen . A transitional seal will be placed from 150 to 145 feet which will consist of hydrated bentonite chips . From 145 feet to the surface the casing annulus will be filled with hydrated cement. To finish the installation , a traffic rated monitoring well box will be cemented into placed at surface level and the new monitoringwell will be capped with a locking ca and lock. pP 9 P SOIL DISPOSAL All soil cuttings and construction materials will be stored on site either in 55- gallon steel drums . Dependent upon soil analysis the final determination for waste disposal will be determined. All waste will be disposed of in a licensed facility. WELL DEVELOPMENT No sooner than 48 hours later, each monitoring well will be surged and developed to establish a path of recharge for the future monitoring events to take place on these wells. A minimum of 10 casing volumes will be purge or until the discharge water is flowing relatively clear. All purge water will be stored in a poly 60- gallon drum and stored on sight for future disposal . After the wells are developed the two new wells (MW-17 and MW-18) will be surveyed. LABORATORY TESTING The following analytical tests will be performed on the soil and groundwater samples by Argon Laboratories. The samples will be placed on ice in a cooler until they are delivered to the laboratory, under chain of custody. Soil Testing EPA 8260 B for MtBE, TAME, ETBE , DIPE and TBA 0. 005 and 0. 0 5 mg/Kg EPA 8260/8015 for BTEX and TPH-g 0.005 and 1 mg/Kg Water Testing EPA 8260 B for TAME , ETBE, DIPE, TBA, 12-DCA AND EDB 0. 5 and 5 u /L EPA 8260/8015 for BTEX and TPH-g 0 . 5 and 50 u /L 4