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M I qV074 RECEIVED <br /> Bureau of land Management JUL 16 2019 <br /> Colorado River Valley Field Office WS"OF RECLAWTION <br /> Mineral Materials Compliance Inspection Report MINING AND SAFETY <br /> General Information <br /> Date 7/2/2019 <br /> Project Name Dotsero Quarry <br /> Operator Mayne Block&Stone <br /> Serial Number COC-066169 <br /> Project Classification Mineral Materials Contract(expired 10/9/2011) <br /> Project Location T4S R 86W Sec 34 NWNW, Eagle County <br /> Inspection Purpose Compliance/reclamation inspection <br /> Time Period Onsite 1 hour <br /> Attendees Jessica Lopez Pearce, BLM Geologist(report author) <br /> Carla DeYoung, BLM Ecologist <br /> New Remarks <br /> I inspected Dotsero Quarry on July 2, 2019 and was joined by BLM Ecologist Carla DeYoung.This site visit was <br /> performed per the BLM Handbook H-3600-1, Chapter VII, Section B and to ensure that final reclamation efforts <br /> were effective.The Contract for the Sale of Mineral Materials between BLM and Mayne Block and Stone <br /> expired on October 9, 2011. Per IM 2015-147,there has been no production from this site since 2010 and <br /> therefore no Mineral Production Verification Report is required.The weather was cloudy and drizzly with <br /> temperatures in the 60's. <br /> The quarry is accessible by travelling eastbound from Dotsero on Highway 6 and taking a left (north) on BLM <br /> 8460.This BLM route travels through several parcels of private land before heading uphill approximately 2 <br /> miles to Dotsero Crater.The Dotsero Quarry is located on the eastern edge of Dotsero Crater. <br /> Final reclamation activities commenced on April 25, 2017 with recontouring (Habitat Construction, contractor) <br /> and concluded on June 2, 2017 after reseeding was complete (Habitat Management, contractor). On <br /> September 26, 2017, BLM provided concurrence with Colorado DRMS for a permit area reduction from 65.5 <br /> acres to 13 acres with a subsequent surety reduction. On October 19, 2017, Colorado DRMS granted the partial <br /> acreage release.The current permit area is depicted on the attached site map. During my inspection on June <br /> 14, 2018, 1 noted that there were noxious weed infestations. In a letter dated September 11, 2018, BLM <br /> required Mayne Block&Stone to perform weed eradication within the permit boundary. Mayne Block and <br /> Stone's contractor, Habitat Management, submitted a Pesticide Use Proposal (PUP)on October 26, 2018. It <br /> was approved by BLM on December 13, 2018. On May 16, 2019, Mark Ray from Habitat Management emailed <br /> the BLM that herbicide had been applied on May 15, 2019. He had conducted broadcast and spot spray <br /> treatments. <br /> Upon my July 2, 2019 site visit,the Dotsero Quarry permit boundary sign, which is partially destroyed, was still <br /> located at the previous permit area boundary, south of the updated permit boundary. <br /> The site was inactive during my visit.There was no equipment present on site.The only evidence of litter were <br /> the downed reclamation signs and bent sign posts.There were no soil or mineral material stockpiles present. <br /> Page 1 of 10 <br />