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caught in the laterals with the smaller and smoother liner applications now available with <br /> improved technologies. <br /> Member Wozniak asked if there was a limit to the pipe condition in which lining would <br /> work(e.g. broken, disjointed or disconnected) that determined if and when the liner tool <br /> would still prove effective. <br /> Mr. Pasko advised that the only problem was a pipe was a pipe with 50% or more <br /> missing; and even then if technicians were gentle in the lining, they could still blow right <br /> through that broken or missing area, essentially creating a pipe within the pipe. Mr. <br /> Pasko noted that the only problematic situations he'd observed were if a pipe had been <br /> crushed or offset and became oval or teardrop shaped. At that point, Mr. Pasko suggested <br /> it may be better to dig and replace that spot, or in areas with a sag. Again, Mr. Pasko <br /> noted the need to address that clearly in ordinance language to address rights and <br /> responsibilities for laterals for homeowners and the municipality. <br /> At the request of Chair Stenlund, Mr. Pasko estimated the typical cost for each cleanout <br /> would be $1,500 to $2,500 each, and perhaps up to $3,000 for vacuuming. <br /> Based on his experience, Member Seigler asked Mr. Pasko if those communities offering <br /> a warranty program were happy with it. <br /> Mr. Pasko opined that it varied: with older communities getting more than new <br /> communities; along with some property owners pushing back or not wanting to <br /> participate based on their preference for less government intervention. <br /> Chair Stenlund asked staff to report on the percentage overall in Roseville of PVC, clay <br /> or cast iron laterals. <br /> Mr. Culver noted that, with the majority of the Roseville sewer system installed in the <br /> late 1950's, and primarily in the 1960's, most lines were clay, but he wasn't able to <br /> identify how much if any were cast iron. Mr. Culver noted that, obviously, new lines <br /> were of PVC construction, but those were few and far between unless in new <br /> construction situations. <br /> Mr. Pasko noted that this would fit in with most of the upper Midwest and national <br /> averages, with clay popular at the turn of the century through the 1970's until use of cast <br /> iron, then trending to PVC once that technology became available. <br /> Given the age of most of the homes in Roseville, Member Seigler asked when a large <br /> amount of lateral failures could be anticipated. <br /> Mr. Pasko advised that it had a lot to do with soil type and trees in their vicinity. Based <br /> on the amount of Roseville's tree cover, Mr. Pasko opined that there was probably a lot <br /> of root damage that had already occurred or was occurring right now. Mr. Pasko noted <br /> that the sub-grade soils around Roseville varied; and if you had heavy clay soils, any <br /> Page 7 of 20 <br />