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Baker, Lydia [EHD] <br />From: jmen209 <jmen209@yahoo.com> <br />Sent: Wednesday, May 26, 2021 1:42 PM <br />To: Baker, Lydia [EHD]; John Ackerson <br />Subject: RE: John Ackerson <br />CAUTION: This email is originated from outside of the organization. Do not click links or open attachments unless you recognize the <br />sender and know the content is safe. <br />Hi Lydia, <br />After doing some research we decide to handle the grinding dust as hazardous waste. <br />I appreciate all your help in helping us resolve this matter. <br />Kind Regards, <br />Juan Mendoza <br />Sent from my Sprint Samsung Galaxy S9+. <br />-------- Original message -------- <br />From: "Baker, Lydia [EHD]" <lbaker@sjgov.org> <br />Date: 5/18/214:06 PM (GMT -08:00) <br />To: jmen209 <j men209 @yahoo. com>, John Ackerson <ackersonequipmentrepair@gmail.com> <br />Subject: RE: John Ackerson <br />Hello Juan, <br />I don't think a caliper is able to measure the dust from the grinding machine to determine if it is less than 100 <br />microns. Here are the options that I can think of: <br />-Handle the grinding dust as hazardous waste. (Larger pieces of metal can still be handled as scrap metal) <br />-Provide a SDS sheet for the metal that shows the metal does not contain hazardous components <br />-Have the grinding dust analyzed by a lab for particle size and CAM17 metals <br />