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WA9302-CS 951027 SHIMEK, JACOBS & FINKLEA CONSULTING ENGINEERS 8333 Douglas Avenue, #820 Dallas, Texas 75225 (2'14) 361-7900 ROSS L. JACOBS, P.E. RONALD V. CONWAY, P.E. JOHN W. BIRKHOFF, PE. October 27, 1995 JOE R. CARIER, P.[. GARY C. HENDRICKS, RE. C. L. SHIMEK, I. C. FINKLEA, RE. lAMES E. LAUGHLIN, RE. Larry Davis Construction Inspector P.O. Box 478 Coppell, Texas 75019-4409 Re: Village Parkway Ground Storage Reservoir No. 2 Pier Elevations Dear Mr. Davis: As you requested, a field survey was conducted on October 26, 1995, to verify the top elevations of fifteen random piers. The following are the results of the survey: Pier Number J Plan Elevation (fi) Field Elevation (fi) J Difference In ElevatiOn (ft) B-8 451.58 450.98 0.60 D-5 451.58 451.00 0.58 D-7 451.58 451.02 0.56 E-3 451.58 451.02 0.56 F-7 451.58 451.13 0.45 F-11 451.58 450.98 0.60 H-6 451.58 451.07 0.51 J-7 451.58 451.10 0.48 J-10 451.58 451.03 0.55 P-3 451.58 451.03 0.55 P-6 451.58 451.03 0.55 P-IO 451.58 451.01 0.57 R-7 451.58 451.01 0.57 S.5-6.5 451.58 451.12 0.46 T-9.5 451.58 451.05 0.53 As noted in our letter dated October 5, 1995, contractors typically leave the piers 5 to 6 inches shorter than the plan elevation of the floor slab. The difference in elevation between the plan elevations (451.58 feet) and the field elevations will be eliminated when the floor slab of the tank is poured and connected to the piers. The top of the pier must be cleaned and free from all debris before the connection is made. Enclosed is a pier layout map with the location of the piers that were surveyed. We are available to discuss this further at your convenience. Sincerely, Matt Hickey, ~ Enclosure cc: Howard Pafford