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A-7 <br /> I,ROBERT GUFFEY,COLORADO PROFESSIONAL SURVEYOR IN THE STATE OF COLORADO,DO HEREBY <br /> CERTIFY THAT THIS DESCRIPTION AND THE FIELD SURVEY ON THE GROUND UPON WHICH IT WAS <br /> BASED WERE PERFORMED BY ME OR UN DF.R MY DIRECT SUPERVISION. <br /> R 08 ERT GU FFEY,PLS 20680 2 68 ' <br /> JOB NO,819.SCHD.0001 <br /> FOR AND ON BEHALF OF <br /> PETROLEUM FIELD SERVICES,LLC AL Lr\� <br /> D.B.A.ASCENT GEOMATICS SOLUTIONS <br /> Sheet 3 of 4 <br /> Keenesburg No. 2 Mine_112 Reelarnation Operation—November 22,2019 <br />