Clay, Attached is the soils engineer's latest recommendations for the paving for our project. I realize you will need to forward this on to your third party consultant for their review. Any expedition you can offer in that regard would be most appreciated. We have Terracon conducting density testing on the paving and tomorrow I'll be scheduling an inspection with Dave Wilde to verify the concrete encasement of the 2 culverts in the north approach as well as grade point checks on the same approach. Please let me know if there's anything further you may require. Regards, Corey Van Trease Principal Van Trease Development, Inc. 611 S. Main Street, Suite 400 Grapevine, TX 76051 Office (866) 304-7676 Fax (866) 304-7878 ________________________________ From: John Johnston Date: Tue, 27 Apr 2010 13:36:36 -0700 (PDT) To: Dan Claassen Cc: Jim Albertson; Subject: Subgrade Preparation Dan - Attached is a letter about subgrade preparation. I trust this approach will be acceptable to the City and to the FAA. We feel comfortable with it. Thanks, John John W. Johnston, P.E. Henley-Johnston & Associates, Inc. 235 Morgan Avenue Dallas, Texas 75203-1025 Texas Firm Registration No. F-1238 Phone: 214-941-3808 Fax: 214-943-7645 e-mail: jwjohnston-hja@sbcglobal.net