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Order No. «Order_Non_3010038 <br />FINDING <br />Therefore, for the reasons set forth above, the State Water Board determines that City of <br />Santa Ana is subject to potential contamination from PFOA/PFOS. <br />DIRECTIVES <br />THEREFORE, the State Water Board hereby orders that the City of Santa Ana conduct <br />periodic water analysis of PFOA/PFOS as follows: <br />1. On or before June 30, 2019, collect a sample from the following source to be <br />analyzed for PFOA and PFOS. Samples shall be collected at least once each <br />alendar quarter thereafter, and not less than for 4 quarters. <br />Source Number Source Name <br />3010038-039 Well 38 <br />2. Samples collected pursuant to Directive 1 shall be analyzed using a laboratory <br />accredited by the California Environmental Laboratory Accreditation Program <br />(ELAP) for analysis of PFAS using either EPA Method 537.1 or EPA Method 537 <br />Revision 1.1. The laboratory should conduct a complete analysis'for all PFAS <br />analytes under the method for which it is accredited. For EPA Method 537, Rev. <br />1.1, analysis for 14 analytes should be conducted. For EPA Method 537.1, <br />analysis for 18 analytes should be conducted. <br />3. Due to concerns regarding contamination of samples by PFAS which may be <br />present in clothing worn, fabric, lotions, sunscreen, food wrappers, etc., extra <br />precaution must be used when collecting samples to avoid false positive results. <br />You must consult with your laboratory to ensure that appropriate sampling protocol <br />is followed. An example sampling protocol for PFAS developed by the Division is <br />attached to this Order. <br />19E-11 <br />