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3M ENVIRONMENTAL LABORATORY AR 226-0190 OES -- METHOD DETERMINATION OF PERFLUOROOCTANE SULFONATE (PFOS), PERFLUOROOCTANE 'SULFONYLAMIDE (PFOSA), AND PERFLUOROOCTANOATE (POAA) IN WATER BY LIQUIDSOLID EXTRACTION AND HIGH-PERFORMANCE LIQUID CHROMATOGRAPHY/TANDEM MASS SPECTROMETRY (HPLC/MS/MS) Method Number: ETS-8-154.0 `Adoption Date: Author: Kristen J.

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~ M226 _ 1412 ISST WELL ezy 5&/114//8587 . 151/ aalsees 1&0/241//8893 24//2270//9500 771390 10&//139//3500 REVISED TEST 411138/s81 7/24/51 8 31 ADJACENT WELL imgu-c e3/1i3/n91 4 DRINKING WaTgR 313/87 Blog 3 11/ 2/8& 12/98 eLpg 212 BLDG 212 S/ 8/89 Buda 212 S28 ON SITE samp ing c=9 ppg i2.l0s 1l3s ro i1s3 iillss 1s <<a0 E2.R5 sis 5.0 i1l.s3 w.6 <0.6 <0.6 <0.6 (3l.o0)5 .

AR 226 _ [415 c 000227 INTEROFFICE MEMORANDUM DFartoem: DTeeplt:Not A1N2T-HAOpNr-Y19J9.0 (0T2ON:Y4)5pmPLAYTIS PLAYTIS P3P0D4--E8R63-2228 TTOO:: CPhEaNNrYlesC TM.AHAOlNtEY TO: WALTER M.

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NMSQ RELEASE A12125926 6- Minnesota Pollution Control Agency www.pca.state.mn.us Toll-free and TDD 1 (800) 857-3884 Saint Paul l Brained l Detroit Lakes 0 Duluth l Mankato 0 Marshall l Rochester 0 Willmar FOR RELEASE: May 9,200s MPCA Media Contact: Michael Rafferty, (65 1) 297-8294 MDH Media Contact: Tannie Eshenaur, (651) 215-0916 MPCA Technical Contact: lngrid Verhagen, (651) 296-7266 MDH Technical Contact: Jim Kelly, (651) 215-0913 GROUND-WATER INVESTIGATION CONTINUES TO FIND PFCS AT LOW LEVELS IN LAKE ELM0 PRIVATE WELLS AS FOUR TEST ABOVE HEALTH-BASED CRITERIA St.

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