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Nov 15 99 08: 40a Bob Ratz (612) 472-2362 p. 3 , Mr. Dick Potts Date November 15, 1999 Page 2 8. Strengthening gt g the existing pipe by the manufacturing of a tight fitting Insitupipe within the old;bridging joints, cracks and disconnected pipes into a single continuous con- duit. Briefly,here are just a few of the benefits realized from the reconstruction of pipelines using the Insitufoim process: Virtually eliminates excavation problems-depending on the type of pipe or passageway to be ' reconstructed (sewers, drains, or conduits)excavation can virtually be eliminated. Existing access (sewer manholes)is usually sufficient. Side connections can generally be'reinstated'by cutting out from within. Bends can be negotiated. Restores full size capacity-reduces maintenance this tight fitting pipe is continuous over pipe joints,openings and faults,the capacity is nearly always increased. The smoothness also reduces depositions because there are no places for deposition to form, thereby reducing maintenance. Builds corrosion resistant pipe-resists chemical attack-various thermosetting resins can be selected to resist the corrosive effects of the effluent. Builds a continuous pipe-(a new pipe within the old)-this pipe bridges breaks and missing ' sections of pipe eliminating infiltration or exfiltration or loss of product in pressure pipes. Insituform fits tightly and bridges disconnected pipes into a single continuous pipe. Reconstructs unusual shaped pipes without loss of capacity-elliptical,egg shaped, flat bottom horseshoe or rectangular conduits can be reinstated to their existing shape by this tight fitting pipe. Accomplishes these things in sizes from 4 inches to 8 feet in diameter-Insitu i constructed to these sizes and may be applicable to those beyond. p pes have been ' Builds or repairs pressure pipes-the thermosetting nature of the resins used yield dimensional cross linking-, three eking strength in both tensions and compression and high flexural modulus. ' The result is a cast-in-place pressure pipe. Few, if any, such field constructed pipes can compare in strength.