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- GLA ran the first clay stockpile permeability evaluation test at 90% compaction and 3% over optimum moisture. The results showed a failing permeability. GLA also ran a new test at 5% over optimum to see if that configuration of moisture will provide passing results. This test also failed. Based on this, GLA stressed the importance of getting as much moisture as possible into the clay and Guinn agreed and stated that they were working the disk on the stockpile and are coordinating with GLA to get the best product available. - GLA took three Shelby tube samples of the clay liner and drove them to their Grass Valley laboratory for permeability testing. All three of the in situ clay liner samples tested passed the requirements of the permeability. 5. Issues which impede the construction schedule and corrective measures: - Section 3.3, E., 12. of the geomembrane specifications calls for the Geosynthetic Contractor to generate a change order with the Owner if they seam the material at a temperature over 104 degrees F. This language was clarified with the designer, Lewis Engineering, and what will be required is a letter from the Installer stating that welding at the higher temperatures will not cause any short or longterm damage to the geomembrane. In addition, Comanco will increase the trial welds to one every 2 hours as well as increasing the number of destructive seam samples in this area. 6. Review f submittals and RFI's: - Guinn provided the coarse gravel submittal, S-04. The gradation of the coarse gravel did not meet the requirements of the specifications and no permeability value was provided. Ginter with Guinn stated that this material was utilized on a prior job and contacted the Designer to see if the material was acceptable. Following a discussion with Lewis Engineering, another source from Granite was identified that still does not meet the specifications, but is a coarser material. To compensate for the smaller grain size, Guinn will be submitting a RFI on smaller slot sizes for the piping and tank. Guinn still needs to have the permeability of the material checked and will work with GLA to get this accomplished. 7. Review of CQA activities:- - GLA shipped the remainder of the drive tube samples from the production clay liner for permeability testing to GLA's laboratory. - GLA monitored the clay processing and placement and worked with Guinn to get the clay as wet as possible without pumping to ensure a lower permeability. - GLA is continuing the LSDS testing on the geomembrane versus clay interface. The clay was moisture conditioned to a higher level to simulate the field conditions. All other interfaces are passing the specified values. - GLA's second CQA Monitor assisted in the testing of the clay and geosynthetics. All the clay testing, with the exception of two tests in the sump area, is complete and in compliance with the specifications. Forward Landfill WMU FU -13 Progress Meeting Minutes Page 3