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... 1 Aging stormwater facilities can be replaced using open-cut or trenchless replacement, or the service life of the existing stormwater facilities can be extended using trenchless renewal. This synthesis focuses primarily on the trenchless renewal of culverts typically ranging in diameter from 12 in.
From page 2...
... 2 The renewal of Stormwater Systems using Trenchless Technologies Questionnaire results indicate that the primary means of selecting the trenchless renewal method is experience-based, followed closely by in-house expert/in-house consultation. This may be part of the reason that most DOTs only have experience with one or two methods and that SL and CIPP pipe are the two most commonly used methods.

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