2012-02-24_REVISION - M1999120 (7)

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EXHIBIT G WATER INFORMATION Introduction The amended Fort Lupton Sand and Gravel Mine is located in parts of Sections 19, 30 and 31; Township 2 North, Range 66 West, and Sections 25 and 36, Township 2 North, Range 67 West of the 6th P.M., Weld County, Colorado. The site is approximately one mile northwest of the City of Fort Lupton, Colorado. In part, the site is bordered on the north by Weld County Road 18 and on the south by Weld County Road 14 %, on the east by the South Platte River and on the west by the Lupton Bottom Ditch /WCR 23.5. Ground water studies done during the 2004 amendment explained the impacts expected due to liners being placed in the South Platte alluvial valley. In general, the ditches, river and streams lying across the site or on either side will limit mounding or draw down around the site. Mitigation Trigger Starting in 2004 L.G. Everist, Inc. began to collect ground water elevations on areas around the mine. The period from May 2004 to August 2006 was used as the baseline for triggering mitigation actions. Since late 2006 outside influences not caused by LGE have been acting on the groundwater levels that have /are changing the levels and impacting our trigger point. There has been an increased gravel mining presence north of the Fort Lupton Sand and Gravel Mine that has dewatering operations west monitoring wells 9 & 10. Another outside influence is the reduction /elimination of groundwater wells pumping from the South Platte River alluvial aquifer. This non - pumping (forced on well owners by the SEO) is leaving more water in the system and may contribute to the increases we have seen in all of our monitoring wells. Prior to and including 2006, the data indicates the groundwater table fluctuations were as much as 7.67 feet depending on the season. In the current trigger plan we are limited to a 2 foot change over the 3 month averages but in most cases this is very common. For example the average depth to water table for MW 9 was 8.55 feet for May 2004 to September 2004 yet from October 2004 to March 2005 it was 11.84 feet - a difference of 3.29 feet, which is over 2 feet threshold. This is due to the normal groundwater changes in the system yet exceed the 2 foot limit and requires us to start mitigation due to the very narrow window. This limitation does not take into account the impacts of outside factors out of LGE's control that are causing changes in groundwater elevations that exceeded the mitigation limits. While these changes have occurred and we have taken the steps necessary to determine their causes. During our investigations we determined the causes were due to system wide environmental factors out of our control. Realistically the trigger number should be based on a 2 foot change determined by a line that approximates a up or downward trend of the water table and considering outside impacts such as, drought, adjoining mining activities, storm events or decreased irrigation activities. At the current time there is no mounding mitigation plan for when the water table increases. We do not expect this to be a 15