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DR9601-CS 960701TRI -TECH CONSTRUCTION, INC July 1, 1996 TRI -TECH 1133 E. LOOP 820 SO. FT. WORTH, TEXAS 76112 OFFICE: 496 -5361 FAX:817- 446 -3044 City of Coppell 255 Parkway Blvd. Coppell, Texas 75019 RE: Gateway Business Park Tri -Tech Construction, Inc. will be using a trench box for trench safety on this project. In some areas that have a cut from five feet to seven feet we will be scoping trenches using the bench method. If further information is needed, please do not hesitate to contact my office. 1 Si Merely, Da Woody