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9 r <br /> 4 <br /> Figure 16. Emergency night work to fortify and build up the berm along the northern edge <br /> of the sump. Photo captured from the pump pad on October 29, 2019; view to the <br /> northeast. <br /> All CSQ personnel assigned to the pumping effort worked a 25-hour shift that began at 7 <br /> am on Tuesday, October 29th and ended at 8 am on Wednesday, October 30th. Those <br /> personnel included supervisors, pump operators and technicians, truck and heavy <br /> equipment operators, and office support. Clean Harbors provided one overnight pump <br /> operator who arrived on site around 3 pm on Tuesday, October 29th. Other CSQ and GLA <br /> representatives were also on site until —9:30 pm on Tuesday. <br /> Throughout the night, two tankers were filled from the sump and were sent offsite to a <br /> disposal site, Greenleaf Environmental Services in De Beque, and were temporarily stored <br /> there through the night. At around 1 l:30 pm, calls were made from the CSQ supervisor in <br /> charge of running the night pumping operation to GLA. They discussed options and the <br /> reality that tank space and storage areas were not adequate to accommodate the volume of <br /> flow continuing to enter the sump from the road fill. The decision was made to slow the <br /> then-current pumping rate that was keeping the sump below the 2 foot mark and instead <br /> allow the sump to fill to a new equilibrium level. All parties were aware that infiltration <br /> from the sump would occur through the berm, but anticipated that clean uncontaminated <br /> water would be able to pass through the berm while surface diesel-laden water would be <br /> 24 <br />