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Bill Bear <br />Page 2 of 2 <br />8/8/2017 <br />Associates on June 29, 2017. The report noted on Gob Pile #2 there was a small seep was seen at <br />the toe of the pile, west of the haul road. The report states that there were no signs of instability, <br />structural weakness or hazardous conditions at the piles. The observations made by J.E. Stover <br />and Associates reflect the observations made by the Division during on-site inspections. A total <br />of 2,821 tons of waste coal was placed on Gob Pile #2 during the 2"d quarter. During the 2"d <br />quarter no compaction tests were performed on the gob piles. The following is a discussion of <br />data from the Huddleston -Beery Engineering and Testing, LLC (HBET) reports on Gob Pile <br />Numbers 2 and 3 included with the quarterly monitoring report. There are three inclinometers <br />installed in the lowermost bench of Gob Pile #2. Measurements of these inclinometers are taken <br />quarterly. The 2"d quarter results indicate that no significant movement occurred. There are 5 <br />vibrating wire piezometers (VWP) installed at Gob Pile #2 and 5 installed at Gob Pile #3. The <br />reports indicate that there has only been minor fluctuations in the values recorded from the <br />VWPs. The minor fluctuations are not believed to affect the stability of either Gob Pile #2 or #3. <br />The reports noted that there are no indications of instability at the gob piles. <br />A letter sent to Bowie Resources, LLC (BRL) on April 10, 2014 from the Division directed BRL <br />to increase the monitoring frequency from quarterly to monthly. In a letter dated April 11, 2014, <br />BRL committed to increasing the monitoring frequency. Monthly monitoring was conducted <br />through October of 2014 and an additional quarterly reading was taken on January 6, 2015. On <br />February 10, 2015 the Division approved BRL to monitor once per quarter through the 1s' quarter <br />of 2016. The Division will continue to review the quarterly data and determine if BRL should <br />return to monthly monitoring of VWP-06 and VWP-08. <br />This concludes the Division's review of the 2nd Quarter 2017 Pond Inspection Report and the 2"d <br />Quarter 2017 Coal Waste Pile & Instrument Monitoring Report. If you have any questions, feel <br />free to contact me. <br />Sincerely, <br />Clayton Wein <br />Environmental Protection Specialist <br />clayton.wein@state.co.us <br />of eon <br />555 Street Address, Room 555, Denver, CO 55555-5555 P 555.555.5555 <br />