Klenztone and a pressure washer will do the trick.<br><br><div id="ymail_android_signature">Tim Lesnar<br>Classic Marble Restoration<br>612.250.0041 - cell<br>763.784.2483 - office<br>www.classicmarblerestore.com <br>#antietch</div> <br> <blockquote style="margin: 0 0 20px 0;"> <div style="font-family:Roboto, sans-serif; color:#6D00F6;"> <div>On Thu, Jul 11, 2024 at 9:12 AM, K Gonzalez</div><div>&lt;kgonzalez@hitechcleaningservices.com&gt; wrote:</div> </div> <div style="padding: 10px 0 0 20px; margin: 10px 0 0 0; border-left: 1px solid #6D00F6;"> <div id="yiv7928355317">

 

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This is a tricky one. I’ve been tasked with removing graffiti from rocks in a historic state park on the Hudson River.&nbsp;
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<div>The graffiti is on natural stone/rocks, is 100 feet away from the closest dirt road and a quarter mile away from the closest outlet and water source.&nbsp;</div>
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<div>My scope will have to be approved by the State Parks department and the EPA before I can begin the work so chemicals, drainage, etc. will all be a significant factor.&nbsp;</div>
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<div>I was thinking about a wire brush on a high speed grinder or some chemical free use of friction. Any recommendations are greatly appreciated. &nbsp;
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<div><b style="font-size:14px;">Kahlil Gonzalez&nbsp;</b><br>
Director of Operations&nbsp;<br>
<u>(914)230-3017</u><br>
<i>kgonzalez@hitechcleaningservices.com&nbsp;</i></div>
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