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enter. According to Project Manager John Gibson, these gases are unpleasant <br /> and may be dangerous. He says the owner should call a plumber to correct the <br /> problem a~ soon as possible. <br /> The moke testing program is part of a larger project to evaluate why <br /> certain a eat of the city have such high levels of stormwater and groundwater <br /> entering he'sanitary sewer lines. This flow of stormwater and groundwater <br /> into the system is called inflow and infiltration (I&I). Inflow is from <br /> improper conMections of roofs or storm drains to the sanitary sewer lines. <br /> Infiltration is groundwater that enters the sanitary sewer system through <br /> broken pipes, cracks, and bad joints. This I&I is unnecessarily collected <br /> and cleaned at the wastewater treatment plant, increasing the cost to treat <br /> <br /> and transpprt the waste, which in turn, increases user fees. <br /> For mbr~ information about the smoke testing program, call 687-5220. <br /> I <br /> <br />