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cc <br />&v <br />A total of 1380 feet of underdrain has been completed. <br />Primary Underdrain: <br />Approximately 563 LF of 8 inch Primary CPe underdrain was placed between Stations 0 +50 and 6 +10. The location <br />and elevation of the pipe invert was determined in the field. Underdrain installation conforms to the project plans. <br />A total of 563 feet of Primary underdrain has been completed. <br />Tree /Slash Clearing, Chipping: <br />Seed Masters continues to "grind and chip" stockpiled trees and brush. Equipment (Seed Masters): one "Chipper, <br />one CAT 330 Excavator <br />B) Underground Workings <br />During the reporting period exploratory excavation and remediation were performed on was performed on UG <br />working No. 6048 and No. 6076. The sites were excavated to practical refusal into rock varying depths depending <br />on the working remediated. The site for each working was then backfilled in 2 foot loose lifts to approximate <br />planned subgrade elevation using the onsite structural fill (excavated material) and "bucket tamped" with the back of <br />the CAT 330 excavator bucket. All backfill material was free of organic material, ice and snow. <br />Confirmatory drilling continued during the reporting period on UG Working No. 6019. All drill locations were spaced <br />on 4( + / -) foot centers and drilled to specified depth. Exploratory excavation will continue until remediation has been <br />performed. <br />Concrete plugs were placed for Underground Working No. 6061 and No. U6111 during this reporting period. <br />Remediation will continue per project specifications and guidelines. <br />C) Highway 67 <br />MHT #2 is in place and is working properly. No other work was performed for the existing HWY 67 crossing during <br />this reporting period. <br />II) Storm Water Management <br />A) Best Management Practices (BMP) are being performed. Inspections continue and there have been no <br />issues identified. <br />CQA ACTIVITIES: <br />amee <br />I) Field Activities: Construction activities and observation of clearing and grubbing, VLF Phase I fill and compaction, <br />underground workings, HWY 67 embankment fill progress observation were some of the tasks performed in the field as <br />required per project specifications. <br />II) Laboratory Activities: Laboratory testing continued (Permeability, Particle Size Distribution, Atterberg Limits, <br />Moisture - Density, gradations and material identifications) were some of the laboratory testing performed during this <br />reporting period as required to project specifications. <br />General Protect Items <br />Meetings and Discussions: None at this time. <br />Summary of Concerns: None at this time <br />CC& v: Working with CC &V Daily updates and reporting. A weekly Project Status meeting was held at 10:OOam on April 2 <br />between CC &V, CDOT, Ames and Amec. Topics discussed were Safety, Schedule, Project Issues, concerns and planning. <br />Page 2 of 6 MLE2 WE 04.06.13.doc <br />