Guideline for the Use and Handling of Styrenated Resins in CIPP

Styrenated resin systems as they are currently used today in cured in place pipe (CIPP) rehabilitation systems produce a safe and environmentally sound solution to the challenges of the need for restoring the nation’s failing infrastructure. While current thought by U.S. academics assessing the overall use of styrene is leaning toward the conclusion that one might “reasonably anticipate styrene to be carcinogenic”, a similar study carried out by the ECETOC (European Centre for Econtoxicology and Toxicology of Chemicals) concluded that “the carcinogenic potential of styrene, if one exists at all, is rated so low that occupational or environmental exposure to styrene is unlikely to present any carcinogenic hazard to man.” Further, the current U.S. study background information states that there is no clear connection for styrene as a carcinogen until you add in the exposure to butadiene and/or benzene; both of which don’t exist in the resin systems used by CIPP installers. The risk associated with styrene’s use in CIPP is minimal and well within the Clean Water Acts’ original intent of keeping the environment as free as is practical of chemical pollutants. CIPP installation sites managed with good housekeeping will present little opportunity for human health risks and/or environmental risks.