4.2. ERMUSR 05-12-2009 - Laserfiche WebLink

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4-L Elk River .~ . Municipal Utilities Memorandum To: Elk River Utilities Commission Jd~n Diesri Jen'y ~' D~y1'll~a~~pem From: David Berg Date: 5/5/2009 Subject: Jackson Street Water Tower The Jackson Street Water Tower was also inspected by one of the major tower paint supply companies, TNEMEC Coating Resources Inc. Their review consisted of a site visit, "x" scratch test, and laboratory testing. Attached is the detailed report they provided. The main conclusion in their report is as follows: "Based on the age and the excessive film build of the existing coatings, an over-coat of this tank would be a very risky application. Additionally, results of the X-scribes I performed indicate moderate to poor adhesion. In our freeze/thaw climate, the addition of more coatings and curing stresses will greatly increase the likelihood of a coatings failure/delam ination." We received the Jackson Street Water Tower lead sample test results from the State of MN Public Health Lab. The tank showed to have 0.026% of lead contaminant in the paint on the bowl. Whereas, the tank legs contain 1.5% lead contaminants. Under MPCA jurisdiction the max lead rule is 0.5% total lead by weight. The tank legs exceed this regulated amount. The risk of airborne lead drift would be a problem, especially being so close to residents & schools. We would need to be sure that preventative actions are taken with either demolishing/refurbishing the tower. Based on the above information, I received two quotes for $190,000 to $300,000 to re- condition the tank with the current lead contaminants. Since there are too many unknowns for this project this value can vary greatly. If there are more underlying problems it could be closer to $300,000 to be sure the structure (ladder, roof, rail, etc...) is OSHA approved.