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Industries. Martin Marietta also operates a pit in close proximity to the Rodman property — closer <br />than the City's operations. <br />These other operations, as well as changes in area land uses such as irrigated agriculture, will <br />influence the output of the Rodman well. These influences, however, have been continuously <br />ignored in favor of assigning fault to the City. Evidence of the disparate treatment of the City is <br />also found in the groundwater level readings at the Nevarez well which is directly between the <br />City's operations and the Rodman farm. Water elevations in this well, like those on the Rodman <br />property, continue to display typical seasonal fluctuations. The Nevaraz well is not dry nor has it <br />been close to dry according to our monitoring efforts. Water levels in the Navarez well, in fact, <br />were increased significantly during the June 2015 monitoring event. This is consistent with data <br />from other wells in the immediate area. <br />During operations, the Aggregate Industries pit immediately upgradient of the Rodman property <br />had continual impacts on the well(s). It is our understanding that steps were taken to isolate the <br />operation from the Rodman wells; steps such as placing a silt pond to create an impermeable <br />barrier between the pit and the Rodman property. This barrier is approximately 200 feet <br />upgradient from the Rodman wells and likely creating a significant disturbance to the hydrologic <br />balance. <br />Martin Marietta recent impacts have not been considered. They have recently installed a <br />production well in close proximity to the Rodman property. Their slurry wall in their west mine <br />is also adjacent to the Rodman property and is also creating a disturbance to the hydrologic <br />balance. You stated that groundwater modeling indicated minimal impacts from the MMM <br />slurry wall, but did the modeling account for cumulative impacts from all of the MMM <br />operations? <br />There is no scientific explanation by which the City's operations would have a greater impact on <br />the Rodman well which although also upgradient is further away, than on the Nevarez well. This <br />would suggest that the other area operations are affecting the Rodman well. It is inappropriate to <br />access the City's potential affects without taking into consideration these other factors. When <br />this issue was raised at our meeting, you discarded it entirely. This is inappropriate and reflective <br />of a less than thorough analysis of the causes of any area hydrologic imbalance. <br />Since the inspection report, we have investigated the potential cistern leak at the Rodman's. <br />From a visual inspection inside all the tanks, a significant crack that could account for the leak <br />was not found. It should be noted that the leak causes approximately 1 -foot of water loss from <br />the top of a 7 '/2 foot high tank. Even as we have investigated the cause of the leak, we do not <br />believe the leak significantly interferes with Mr. Rodman's needed operation of the cistern. <br />Even as this letter is being written, we continue to work with Mr. Rodman to ensure the cistern is <br />operating properly. <br />The City of Greeley working with Mr. Schenderlein hired JD Enterprises (JD) on August 13, <br />2015 to go to the Rodman's with a mini -excavator and uncovered the top openings for all four <br />cistern tanks. JD inspected the inside of the tanks for noticeable cracks and found none. They <br />