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Ms. Jamie Gaboriau • • <br />April /7, 2002 <br />Page 3 of 3 <br />approximately 1500 feet from the northern property boundary of the pit. All of these wells have <br />been completed in the alluvium and are considered "shallow" wells. <br />MONITOR WELL DATA <br />Since June of 2001, Aggregate has been collecting monthly water levels at three monitor wells <br />adjacent to the site. In review of this information, the data indicates a gradual decline in water <br />levels, with a maximum total decline of 11.5 Feet at Well #1 from original conditions in 2001 <br />through April 5, 2002. Specifics regarding monitor well construction and installation with <br />regard to pumping from the site are not known at this time. <br />OTHER OBSERVAT[ONS <br />A general site review was conducted on April 10, 2001. Prior to this site review, general <br />information regarding land ownership in the area was determined based on Weld County <br />Assessor's Map #1471 for Sections 29, 30, 31, and 32, all Township 1 North, Range 66 West. In <br />Section 30, two parcels owned by Mr. Brancucci were identified in the N %z of the NE ''/a, and in <br />the NE '/< of the SE '/< of the section. Several wells were observed just west of WCR 27; none of <br />these wells were observed to be pumping. However, a well located just north of WCR 4 and <br />west of WCR 27 was observed to be pumping. The ownership of the pazcel on which the well is <br />located was not identified. Water from the well was being dischazged into an open earthen ditch <br />that ran along the northern boundary of two other separate parcels identified as Elms and Case. <br />Flow or other related measurements were not taken at the well. <br />A ditch lateral was noted carrying water along WCR 27 delivering water to the north. One of <br />Mr. Brancucci's wells is located just west of this ditch neaz the intersection of WCR 6 and 27. <br />Additionally, two other ditches were observed east of WCR 27 one of which is believed to be the <br />main Fulton Ditch. Both of these ditches were carrying water at the time. <br />The ski lake located immediately east of HWY 85 and east of the pit was also observed. Water <br />was observed in the lake; however, the level appeared to be somewhat less than the high water <br />mark on the banks. No measurements were taken at the ski lake. Also, several area ponds were <br />observed east of WCR 27 along WCR 4. The water level in al] of these ponds appeared to be <br />less than the high water mazk. <br />SUMMARY <br />An in-depth ground water analysis has not been completed for this area to determine the <br />potential affects of dewatering at the Platte Valley Pit. However, based on the available <br />information, a preliminary assessment has been determined as follows: <br />• 'Data available from the three Aggregate monitor wells indicates that the ground water <br />table has declined by as much as 11.5 feet. Since these wells are located immediately <br />adjacent to the pit, it is anticipated that. this draw down is probably a direct result of the <br />dewatering operations. <br />• The draw down in the water table may extend out from the pit. However, the draw <br />down at a location approximately 0.25 miles from the pit is anticipated to be <br />considerably less than the 11.5 draw down noted at the pit based on information <br />