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fte <br /> e <br /> rve Mil Elm Street <br /> CMilford, NH 03055 <br /> , m�,, <br /> ,G <br /> &=,ult-TIA11 <br /> (603) 673-5440 <br /> Fax (603) 673-0366 <br /> Sales@chemservelab.com <br /> Thursday, June 24, 2021 <br /> Tim Cosgrave <br /> UniFirst <br /> 68 Jospin Rd <br /> Wilmington MA 01887 <br /> Project Name: Stockton, CA Lab ID: 21040408 <br /> Project#: #370 <br /> Date Received: 4/29/2021 <br /> Project Location: Stockton, CA#370 <br /> Control #: 21040408 <br /> Dear Tim Cosgrave <br /> Enclosed please find the laboratory results for the above referenced samples that were received by the <br /> ChemServe sample custodian on the above referenced date. Any abnormalities to the samples upon <br /> receipt would be noted on the enclosed chain of custody document. This report is not valid without a <br /> completed chain of custody with the corresponding control number, attached. <br /> All samples analyzed by ChemServe are subject to quality standards. These standards are as stringent or <br /> more stringent than those established under NELAC,40 CFR Part 136, state certification programs, and <br /> corresponding methodologies. ChemServe has a written QA/QC Procedures Manual that outlines these <br /> standards, and is available for your reference, upon request. Unless otherwise stated on the Chain of <br /> Custodyor within the report, all holding times, preservation techniques, container types, and analytical <br /> methods are analogous with those outlined by NELAC. All units are based on "as received"weight unless <br /> denoted "dry". <br /> Residual chlorine, sulfite and pH are intended to be performed as an immediate field analysis. Should any <br /> of these analyses be performed in the lab instead of in the field it will result in those analyses being <br /> performed out of holding time. <br /> Acrolein and 2-ch loroethyl vinyl ether require an additional analysis with an un-preserved sample. <br /> If unpreserved vials were not submitted for these compounds then acrolein and 2-CEVE are not reported <br /> due to not meeting method requirements, but may be reported as estimated upon requestfor EPA 624.1 or <br /> EPA 524.2. <br /> 1 certify that I have reviewed the above referenced analytical data and state forms, and I have found this <br /> report within compliance with the procedures outlined within NELAC. Chem Serve's <br /> certified parameter list can be found at http://\Aww.chemservelab.com/Laboratory-Information-and- <br /> Documentation.aspx <br /> Dr.Jamie Fitzgerald PhD $ <br /> President/Laboratory Director <br /> Certificate Number 1008 <br /> Page 1 of 7 <br />