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2. Review of work progress since previous meeting: - Guinn conducted potholing in the area of subgrade fill on the east facing slope identified by Sangeeta in the Pre -Construction Meeting to determine the existing cover thickness. Based on the potholing, it was concluded that adequate thickness of cover soil has been placed in this location and no further action is necessary. - Guinn exposed the tie-in from the previous WMU construction. - Guinn continued to place embankment fill (approximately 15,000 cubic yards) and should be to the 2:1 slope by today or tomorrow. - The evaluation of potential clay material in the existing cell does not meet the specified requirements for clay content. Guinn has identified an area approximately 400 feet to the east of the WMU and will pothole today and provide samples for evaluation by GLA. This material looks promising and Guinn will try to keep the cut no deeper than 4 feet to remove the clay. - Guinn stockpiled approximately 5,500 cubic yards of operations soil. - Guinn is removing soil from around the existing leachate tank. - Guinn began exposing the geogrid. 3. Projected schedule: - Guinn will continue placing soil in the embankment fill. - Republic (Lochlin) will call Skaps to order the geotextile and will cut a P.O. for the material. Lochlin will also contact Agru for the HDPE geomembrane. - Comanco was told that the geomembrane material and WMU should be ready for liner installation on June 24tH Guinn will complete about 20 feet of floor area at the toe of the slopes to allow for liner placement on the side slopes. - GLA will obtain the clay pothole samples and Scott P. will deliver to GLA's geotechnical laboratory for testing. 4. Field observations, problems, conflicts, and changes: - Based on the results of the large scale direct shear (LSDS) testing at other Republic sites, GLA indicated that it may be difficult to obtain the specified shear stresses between the Agru geomembrane and Skaps geotextile. To that end, GLA performed a LSDS test on Agru 60 -mil textured geomembrane and the Skaps geotextile. The three higher normal stresses resulted in passing shear stresses; however the lower (2,000 psf) normal stress had a shear stress slightly below the specified value. Lewis Engineering re -ran the stability analysis using a shear stress of 600 psf and a normal stress of 2,000 and found the results to be acceptable. Based on that result, the Agru material should be acceptable for the project. The LSDS test results have been attached to these meeting minutes. 40 Forward Landfill WMU FU -13 Progress Meeting Minutes Page 2