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Project: Pond 16 Area <br />Remediation <br />Location: Routt County, CO <br />Client: Peabody Energy <br />Work Performed: <br />NORTHWEST COLORADO CONSULTANTS, INC. <br />FIELD REPORT <br />Project No.: 08 -8099 <br />Report No.: 15 <br />Date: 5/16/12 <br />Time: 4.0 <br />Mileage: 74 <br />Engr. /Tech: JS <br />As requested, we visited the project site on today's date and conducted compaction test No.'s 71 through 77 <br />on the material being placed for roadway embankment fill. <br />The Client, placed and compacted on -site material for J and K roads embankment fill between Stations 3 +50 and <br />9 +75. It should be noted that Mirafi soil stabilization fabric was placed approximately 6 inches to 1 1/2 feet below <br />the subgrade elevation between Stations 3 +50 and 6 +00. Compaction test numbers 71 through 73 were taken <br />below the Mirafi fabric. Test number 73 did not meet the project specifications for compaction, however, it does <br />appear that the Mirafi fabric is stabilizing the underlying material. We observed several passes with a loaded Volvo <br />A250 off road haul truck prior to testing the area and the subgrade soils overlying the Mirafi appeared stable. <br />Remarks: <br />We obtained a sample of the on -site material from test number 71 and returned it to our laboratory in Steamboat <br />Springs, CO for standard one point (checkpoint) Proctor Testing. This material matched previously determined <br />Proctor Number 2P for this project. <br />With exception of test no. 73 at Station 4 +75 below Mirafi soil stabilization fabric, all material tested generally met <br />the project specifications for compaction. <br />Please refer to the attached sheet for results of today's testing. <br />Verbal Discussions: <br />Jim Rolando of Seneca Mine was notified of today's test results. <br />