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185 <br />186 KEN HERCEG: Mr. Chairman, we spent good money to bring in these outside <br />187 consultants so there are a few more items from their report I would like to share. On <br />188 page one, last paragraph, the report states that the correct cleaner for Joliet and Lamont <br />189 limestone is Sure Clean Limestone Historical Product. It has been used on many well - <br />190 known historical structures built with this stone. <br />191 <br />192 With regard to power washing, a general washing at 1500 psi with a 25 degree tip would <br />193 not remove any stone that would not haven fallen off with in the next few months any <br />194 way. <br />195 <br />196 GERALD UJDAK: I move that the Certificate of Appropriateness be modified to the <br />197 extent that no power washing and no water repellent be used on the courthouse and all <br />198 mortar joints and holes be inspected and repaired as needed with material, similar in <br />199 texture and color to the existing mortar. <br />200 <br />201 CATHERINE HOSTETLER: I second the motion. <br />202 <br />203 MARTHA CHOITZ: The National Trust has, for years, told preservationists not <br />204 to power wash historical buildings. The importance of being extremely cautious when <br />205 washing a historic structure never makes its way down to the man holding the hose, <br />206 which inevitably leads to severe damage of the building. <br />207 <br />208 I wish we had the National Trust's opinion on the contents of the letter from Mr. Hercegs' <br />209 consultants. <br />210 <br />211 I think we would rather have the courthouse a little dirty rather then run the risk of having <br />212 someone irrevocably damage the limestone. <br />213 <br />214 GERALD UJDAK: All sedimentary rocks are laid down in layers. In some buildings <br />215 the blocks of stone are laid so you can see the layers, unfortunately, the builders of the <br />216 courthouse choose to lay the stone so the layers are vertical. These layers are very, very <br />217 thin causing them to peel off. I do not believe that the Commission wants to accelerate <br />218 this shedding by power washing the structure. <br />219 <br />220 After due consideration, the following action was taken: <br />221 <br />222 Upon a motion by Gerald Ujdak, being seconded by Catherine Hostetler and <br />223 carried with Joann Sporleder abstaining, the proposed Certificate of Appropriateness for <br />224 power washing, sealing, tuck -pointing and patching, of the property located at 112 S. <br />225 Lafayette, South Bend, Indiana, was amended to deny the power washing and water <br />226 repellent and approve tuck -pointing and patching, as needed, with a substance similar to <br />227 the original in texture and color. <br />228 <br />229 <br />230 <br />5 <br />