2025-03-11-minutes-solid-waste-and-maintenance

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Monitoring Well 88 Plans and Specificationa rir4icas Couray Solid Waste with the GEOLOGIST. The posts shall be installed a minimum of 1.5 feet embedded in cement below the ground surface. The well monument and the protective posts shall be painted with a highly visible paint as indicated on the Plans and in accordance with Sections 2.3.6 and 2.3.7 The CONTRACTOR shall place silica sand pack material in the above -ground annular space between the well casing and the well monument. The Ecology well tag shall be affixed to the outer diameter of well monument using stainless steel bands following Chapter 173-160-311 WAC. Well Development 3.1 Well Development The CONTRACTOR shall develop the well by bailing, pumping, and surging until turbidity decreases and stabilizes. Minimum development time shall be 30 minutes with tools working downhole. Stable turbidity shall be defined as turbidity less than 5 Nephelometric Turbidity Unit (NTU) following pumping. The GEOLOGIST will be onsite during development to confirm ceasing of well development by measuring turbidity. Samples may be collected at the end of development by the GEOLOGIST. The discha rge tube from the development pump shall be capable of connecting to a standard 0.45 micron filter using 3/8-inch outside diameter silicon tubing. Hydraulic testing following well development will be completed by the GEOLOGIST separately. 33.1 Purge Water Purge water from development will be discharged to ground surface in a manner that does not affect Facility operations. 3.1.2 WeD De-velopment Records The CONTRACTOR shall record the total volume purged and qualitative observations of turbidity during development. Written records shall be provided to the GEOLOGIST at the conclusion of development. 3,1.3 Decontamination Well development equipment must be either new and disposable or decontaminated prior to initiated well development. Decontamination of development equipment may be completed with distilled or potable water and Liquinox or equivalent cleaning solution, All decontaminated equipment shall be thoroughly rinsed prior to use in development to prevent cleaning solutions from being introduced to the well. Water can be disposed of in the easternmost leachate evaporation pond as noted in Section 2.2.2. easuxearnl,ent and Payment The CONTRACTOR shall be compensated by unit prices. For Work completed in exceedance of the work contract amount, unit prices shall apply, 14 February 2025 1 553-1763-010