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PC <br />The Sigel of Quality <br />June 25, 2018 <br />Department of Natural Resources <br />Division of Reclamation, Mining and Safety <br />I313 Sherman Street, Room 215 <br />Denver, CO 80203 <br />RE: Status Report; APC Construction Co -- Ralston Quarry <br />Mr. Scott, <br />14802 W 44'h Avenue <br />Golden, Colorado 80403 <br />Office: 303-279-6611 <br />Fax: 303-279-6216 <br />www.apc.us.com <br />On Monday morning, June 11, 2018, we received a call from the Denver Water Board reporting that a <br />slide had happened on our property. They stated that their inspector had not noticed anything at <br />approximately I 1 am on Sunday, but the slide had happened by 7:30am on Monday. After receiving <br />the report, representatives from APC Construction Co evaluated the site. We determined that based <br />on the volume of material we would check into the availability of an outside earth moving contractor <br />to help with the remediation. We contacted Ames Construction and met with two representatives <br />from their organization on Tuesday, June 12`h. They had some equipment and operators available and <br />could begin mobilization to the site on Wednesday. <br />APC Construction Co has never done any mining in this area but early in the mining process <br />overburden material had been placed on the slope. Stabilization of the area and safely addressing the <br />situation were our first priorities. <br />On Wednesday afternoon Ames Construction spent approximately 2 -hours working to relieve some <br />pressure at the bottom of the slide area to begin remediation. On Thursday and Friday, they had <br />limited assets on site but began the initial emergency remediation in order to work towards clearing <br />the bottom of the slide and stabilizing the area. On Monday, June 18th, Ames Construction began full <br />operation to begin moving the slide material to an area that was much flatter in contour and would not <br />create any risk of the material moving. <br />On Tuesday, June 10, Karlene Thomas from Pinyon Environmental viewed the site and made some <br />suggestions with regard to stormwater detention while the work was proceeding. At that point we <br />asked her for a recommendation on a geotechnical engineer who could work with us to review the site, <br />after this initial work is complete. We are also checking several other sources for qualified <br />professional to help us put this area in a final configuration. <br />It is now our understanding from our meeting onsite today, that it will necessary to file a remediation <br />plan with you and to receive input with regard to finalizing the remediation and reclamation. <br />iLar7i WSW"A{WuR Pa dA—CUNM <br />Pa.w�rn� A.wdaurn <br />?�+� rr�r •1a <br />