March 11, 2019 Michael Ng BSK Associates 1414 Stanislaus St Fresno,CA 93706 Dear Michael Ng: Thank you for your application for renewal in the Environmental Laboratory Accreditation Program. Enclosed is a Certificate of Accreditation covering the one-year period beginning March 11, 2019 and a current Scope of Accreditation. Accreditation is based in part on third party recognition of the Labs Oregon NELAP accreditation. Nitrate + Nitrite analyzed by SM 4500-NO3- F-2011 in non-potable water was denied accreditation because it was not listed in the Labs Oregon NELAP scope of accreditation. Renewal of accreditation is based in part on review of your lab’s performance over the past year as evidenced by participation in proficiency testing (PT) studies. Aroclors by EPA 608 have provisional accreditation pending an acceptable PT sample result. This is because the Lab failed the Aroclor quantification portion of the Labs last PT sample. The following drinking water parameters have provisional accreditation until May 10, 2019 pending acceptable corrective actions and PT sample result. This is because the Lab failed their last PT sample for the following drinking water parameters: Nitrate analyzed by EPA 300.0 Nitrate + Nitrite analyzed by EPA 300.0 Orthophosphate analyzed by EPA 300.0 The Following non-potable water parameters have provisional accreditation pending acceptable PT sample results because the Lab failed their last PT sample for these non-potable water parameters: Total Solids analyzed by SM 2540 B-2011 Total, Fixed, and Volatile Solids analyzed by SM 2540 E-2011 Selenium analyzed by EPA 200.8 Hexachloroethane analyzed by EPA 625 in non-potable water is denied accreditation pending acceptable corrective actions and PT sample results. This is because the analyte was listed in the PT sample the Lab analyzed and the Lab did not report a PT for the parameter. Dichlorodifluoromethane analyzed by EPA 624 in non-potable water is denied accreditation because it is not EPA approved in 40 cfr 136.3.

A number of parameters were withdrawn accreditation at the Labs request. The Lab requested a number of parameter additions although the Lab had not completed some supporting documentation, such as corrective actions for failed PT samples and acceptable PT sample results for all requested parameters where PT samples are available. The Lab decided to resend the addition request after they are able to submit the supporting documentation for the additions. Part of the Labs addition request included updating to EPA 608.3, EPA 624.1, and EPA 625.1, the Lab must be updated to these new methods prior to September 26, 2019. As a reminder, continued participation in the Ecology Lab Accreditation Program requires the lab to: • Submit a renewal application and fees annually. • Report significant changes in facility, personnel, analytical methods, equipment, the lab’s

quality assurance (QA) manual or QA procedures as they occur. • Participate in proficiency testing studies semi-annually, with the following exception: For

each parameter where all required PT samples were analyzed and results were satisfactory, you are required to submit only one PT result over this next year, and in subsequent years, as long as the results are satisfactory.

• Submit copies of current third-party Scopes of Accreditation when they are available. YOUR RIGHT TO APPEAL You have a right to appeal Ecology’s decision to the Pollution Control Hearing Board (PCHB) within 30 days of the date of receipt of this decision letter. The appeal process is governed by Chapter 43.21B RCW and Chapter 371-08 WAC. “Date of receipt” is defined in RCW 43.21B.001(2). To appeal you must do the following within 30 days of the date of receipt of this decision:

• File your appeal and a copy of this decision with the PCHB (see addresses below). Filing means actual receipt by the PCHB during regular business hours.

• Serve a copy of your appeal and this decision on Ecology in paper form - by mail or in person. (See addresses below.) E-mail is not accepted.

You must also comply with other applicable requirements in Chapter 43.21B RCW and Chapter 371-08 WAC.

ADDRESS AND LOCATION INFORMATION

Street Addresses Mailing Addresses

Department of Ecology Attn: Appeals Processing Desk 300 Desmond Drive SE Lacey, WA 98503

Department of Ecology Attn: Appeals Processing Desk PO Box 47608 Olympia, WA 98504-7608

Pollution Control Hearings Board 1111 Israel Road SW STE 301 Tumwater, WA 98501

Pollution Control Hearings Board PO Box 40903 Olympia, WA 98504-0903

If you have any questions concerning the accreditation of your lab, please contact Kamilee Ginder at (360) 871-8841, fax (360) 871-8849, or by e-mail at kamilee.ginder@ecy.wa.gov. Sincerely,

Rebecca Wood Lab Accreditation Unit Supervisor RW:KG:kg Enclosures

BSK Associates Fresno, CA

has complied with provisions set forth in Chapter 173-50 WAC and is hereby recognized by the

Department of Ecology as an ACCREDITED LABORATORY for the analytical parameters

listed on the accompanying Scope of Accreditation. This certificate is effective March 11, 2019

and shall expire March 10, 2020.

Witnessed under my hand on March 11, 2019

Rebecca Wood

Lab Accreditation Unit Supervisor

Laboratory ID

C997

is accredited for the analytes listed below using the methods indicated. Full accreditation is granted unless stated otherwise in a note. EPA is the U.S. Environmental Protection Agency. SM is "Standard Methods for the Examination of Water and Wastewater." SM refers to EPA approved method versions. ASTM is the American Society for Testing and Materials. USGS is the U.S. Geological Survey. AOAC is the Association of Official Analytical Chemists. Other references are described in notes.

BSK AssociatesFresno, CA

WASHINGTON STATE DEPARTMENT OF ECOLOGY

SCOPE OF ACCREDITATIONENVIRONMENTAL LABORATORY ACCREDITATION PROGRAM

Matrix/Analyte Method Notes

Drinking Water

Chromium, Hexavalent EPA 218.6_3.3_1994 1Chromium, Hexavalent EPA 218.7_1_2011 1Bromide EPA 300.0_2.1_1993 1Chloride EPA 300.0_2.1_1993 1Fluoride EPA 300.0_2.1_1993 1Nitrate EPA 300.0_2.1_1993 1,4Nitrate + Nitrite EPA 300.0_2.1_1993 1,4Nitrite EPA 300.0_2.1_1993 1Orthophosphate EPA 300.0_2.1_1993 1,4Sulfate EPA 300.0_2.1_1993 1Bromide EPA 300.1_1_1997 1Chlorate EPA 300.1_1_1997 1Chlorite EPA 300.1_1_1997 1Perchlorate EPA 314.0-99 1Bromate EPA 317.0_2_2001 1Turbidity SM 2130 B-2011 1Alkalinity SM 2320 B-2011 1Corrosivity SM 2330 B-2011 1Hardness (calc.) SM 2340 B-2011 1Specific Conductance SM 2510 B-2011 1Solids, Total Dissolved SM 2540 C-2011 1Cyanide, Weak Acid Dissociable SM 4500 CN¯I-2011 1

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Matrix/Analyte Method Notes

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Cyanide, Total SM 4500-CN¯ E-2011 1Orthophosphate SM 4500-P E-2011 1Dissolved Organic Carbon SM 5310 C-2011 1Total Organic Carbon SM 5310 C-2011 1Anionic Surfactants (MBAS) SM 5540 C-2011 1UV Absorbing Organics SM 5910B-2011 1Aluminum EPA 200.7_4.4_1994 1Barium EPA 200.7_4.4_1994 1Boron EPA 200.7_4.4_1994 1Calcium EPA 200.7_4.4_1994 1Copper EPA 200.7_4.4_1994 1Iron EPA 200.7_4.4_1994 1Magnesium EPA 200.7_4.4_1994 1Manganese EPA 200.7_4.4_1994 1Potassium EPA 200.7_4.4_1994 1Silica EPA 200.7_4.4_1994 1Silver EPA 200.7_4.4_1994 1Sodium EPA 200.7_4.4_1994 1Zinc EPA 200.7_4.4_1994 1Antimony EPA 200.8_5.4_1994 1Arsenic EPA 200.8_5.4_1994 1Barium EPA 200.8_5.4_1994 1Beryllium EPA 200.8_5.4_1994 1Cadmium EPA 200.8_5.4_1994 1Chromium EPA 200.8_5.4_1994 1Copper EPA 200.8_5.4_1994 1Lead EPA 200.8_5.4_1994 1Mercury EPA 200.8_5.4_1994 1Nickel EPA 200.8_5.4_1994 1Selenium EPA 200.8_5.4_1994 1Silver EPA 200.8_5.4_1994 1Thallium EPA 200.8_5.4_1994 1Total Uranium EPA 200.8_5.4_1994 1Zinc EPA 200.8_5.4_1994 11,2-Dibromo-3-chloropropane (DBCP) EPA 504.1_1.1_1995 11,2-Dibromoethane (EDB, Ethylene dibromide) EPA 504.1_1.1_1995 1

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Matrix/Analyte Method Notes

BSK Associates

Alachlor EPA 505_2.1_1995 1Aldrin EPA 505_2.1_1995 1Aroclor-1016 (PCB-1016) EPA 505_2.1_1995 1Aroclor-1221 (PCB-1221) EPA 505_2.1_1995 1Aroclor-1232 (PCB-1232) EPA 505_2.1_1995 1Aroclor-1242 (PCB-1242) EPA 505_2.1_1995 1Aroclor-1248 (PCB-1248) EPA 505_2.1_1995 1Aroclor-1254 (PCB-1254) EPA 505_2.1_1995 1Aroclor-1260 (PCB-1260) EPA 505_2.1_1995 1Atrazine EPA 505_2.1_1995 1Chlordane (tech.) EPA 505_2.1_1995 1Dieldrin EPA 505_2.1_1995 1Endrin EPA 505_2.1_1995 1gamma-BHC (Lindane, gamma-Hexachlorocyclohexane) EPA 505_2.1_1995 1Heptachlor EPA 505_2.1_1995 1Heptachlor epoxide EPA 505_2.1_1995 1Hexachlorobenzene EPA 505_2.1_1995 1Hexachlorocyclopentadiene EPA 505_2.1_1995 1Methoxychlor EPA 505_2.1_1995 1Simazine EPA 505_2.1_1995 1Toxaphene (Chlorinated camphene) EPA 505_2.1_1995 12,4,5-T EPA 515.4_1_2000 12,4-D EPA 515.4_1_2000 12,4-DB EPA 515.4_1_2000 13,5-Dichlorobenzoic acid EPA 515.4_1_2000 1Acifluorfen EPA 515.4_1_2000 1Bentazon EPA 515.4_1_2000 1Chloramben EPA 515.4_1_2000 1Dacthal (DCPA) EPA 515.4_1_2000 1Dacthal Acid Metabolites EPA 515.4_1_2000 1Dalapon EPA 515.4_1_2000 1Dicamba EPA 515.4_1_2000 1Dichloroprop (Dichlorprop) EPA 515.4_1_2000 1Dinoseb (2-sec-butyl-4,6-dinitrophenol, DNBP) EPA 515.4_1_2000 1Pentachlorophenol EPA 515.4_1_2000 1Picloram EPA 515.4_1_2000 1

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Matrix/Analyte Method Notes

BSK Associates

Silvex (2,4,5-TP) EPA 515.4_1_2000 13-Hydroxycarbofuran EPA 531.1_3.1_1995 1Aldicarb (Temik) EPA 531.1_3.1_1995 1Aldicarb sulfone EPA 531.1_3.1_1995 1Aldicarb sulfoxide EPA 531.1_3.1_1995 1Carbaryl (Sevin) EPA 531.1_3.1_1995 1Carbofuran (Furaden) EPA 531.1_3.1_1995 1Methiocarb (Mesurol) EPA 531.1_3.1_1995 1Methomyl (Lannate) EPA 531.1_3.1_1995 1Oxamyl EPA 531.1_3.1_1995 1Glyphosate EPA 547_1990 1Diquat EPA 549.2_1_1997 1Paraquat EPA 549.2_1_1997 1Bromoacetic acid EPA 552.3 Rev 1 (2003) 1Bromochloroacetic acid EPA 552.3 Rev 1 (2003) 1Chloroacetic acid EPA 552.3 Rev 1 (2003) 1Dibromoacetic acid EPA 552.3 Rev 1 (2003) 1Dichloroacetic acid EPA 552.3 Rev 1 (2003) 1Total haloacetic acids (HAA5) EPA 552.3 Rev 1 (2003) 1Trichloroacetic acid EPA 552.3 Rev 1 (2003) 11,1,1,2-Tetrachloroethane EPA 524.2_4.1_1995 11,1,1-Trichloroethane EPA 524.2_4.1_1995 11,1,2,2-Tetrachloroethane EPA 524.2_4.1_1995 11,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113) EPA 524.2_4.1_1995 11,1,2-Trichloroethane EPA 524.2_4.1_1995 11,1-Dichloroethane EPA 524.2_4.1_1995 11,1-Dichloroethylene EPA 524.2_4.1_1995 11,1-Dichloropropene EPA 524.2_4.1_1995 11,2,3-Trichlorobenzene EPA 524.2_4.1_1995 11,2,3-Trichloropropane EPA 524.2_4.1_1995 11,2,4-Trichlorobenzene EPA 524.2_4.1_1995 11,2,4-Trimethylbenzene EPA 524.2_4.1_1995 11,2-Dichlorobenzene EPA 524.2_4.1_1995 11,2-Dichloroethane (Ethylene dichloride) EPA 524.2_4.1_1995 11,2-Dichloropropane EPA 524.2_4.1_1995 11,3,5-Trimethylbenzene EPA 524.2_4.1_1995 1

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BSK Associates

1,3-Dichlorobenzene EPA 524.2_4.1_1995 11,3-Dichloropropane EPA 524.2_4.1_1995 11,4-Dichlorobenzene EPA 524.2_4.1_1995 12,2-Dichloropropane EPA 524.2_4.1_1995 12-Butanone (Methyl ethyl ketone, MEK) EPA 524.2_4.1_1995 12-Chlorotoluene EPA 524.2_4.1_1995 12-Hexanone EPA 524.2_4.1_1995 14-Chlorotoluene EPA 524.2_4.1_1995 14-Isopropyltoluene (p-Cymene) EPA 524.2_4.1_1995 14-Methyl-2-pentanone (MIBK) EPA 524.2_4.1_1995 1Acetone EPA 524.2_4.1_1995 1Benzene EPA 524.2_4.1_1995 1Bromobenzene EPA 524.2_4.1_1995 1Bromochloromethane EPA 524.2_4.1_1995 1Bromodichloromethane EPA 524.2_4.1_1995 1Bromoform EPA 524.2_4.1_1995 1Carbon tetrachloride EPA 524.2_4.1_1995 1Chlorobenzene EPA 524.2_4.1_1995 1Chlorodibromomethane EPA 524.2_4.1_1995 1Chloroethane (Ethyl chloride) EPA 524.2_4.1_1995 1Chloroform EPA 524.2_4.1_1995 1cis-1,2-Dichloroethylene EPA 524.2_4.1_1995 1cis-1,3-Dichloropropene EPA 524.2_4.1_1995 1Dibromomethane EPA 524.2_4.1_1995 1Dichlorodifluoromethane (Freon-12) EPA 524.2_4.1_1995 1Dichloromethane (DCM, Methylene chloride) EPA 524.2_4.1_1995 1Di-isopropylether (DIPE) EPA 524.2_4.1_1995 1Ethylbenzene EPA 524.2_4.1_1995 1Ethyl-t-butylether (ETBE) EPA 524.2_4.1_1995 1Hexachlorobutadiene EPA 524.2_4.1_1995 1Isopropylbenzene EPA 524.2_4.1_1995 1m+p-xylene EPA 524.2_4.1_1995 1Methyl bromide (Bromomethane) EPA 524.2_4.1_1995 1Methyl chloride (Chloromethane) EPA 524.2_4.1_1995 1Methyl tert-butyl ether (MTBE) EPA 524.2_4.1_1995 1Naphthalene EPA 524.2_4.1_1995 1

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Matrix/Analyte Method Notes

BSK Associates

n-Butylbenzene EPA 524.2_4.1_1995 1n-Propylbenzene EPA 524.2_4.1_1995 1o-Xylene EPA 524.2_4.1_1995 1sec-Butylbenzene EPA 524.2_4.1_1995 1Styrene EPA 524.2_4.1_1995 1tert-amylmethylether (TAME) EPA 524.2_4.1_1995 1tert-Butyl alcohol EPA 524.2_4.1_1995 1tert-Butylbenzene EPA 524.2_4.1_1995 1Tetrachloroethylene (Perchloroethylene) EPA 524.2_4.1_1995 1Toluene EPA 524.2_4.1_1995 1Total Trihalomethanes EPA 524.2_4.1_1995 1trans-1,2-Dichloroethylene EPA 524.2_4.1_1995 1trans-1,3-Dichloropropylene EPA 524.2_4.1_1995 1Trichloroethene (Trichloroethylene) EPA 524.2_4.1_1995 1Trichlorofluoromethane (Freon 11) EPA 524.2_4.1_1995 1Vinyl chloride EPA 524.2_4.1_1995 1Xylene (total) EPA 524.2_4.1_1995 1Acenaphthene EPA 525.3_1.0_2012 1Acenaphthylene EPA 525.3_1.0_2012 1Alachlor EPA 525.3_1.0_2012 1Anthracene EPA 525.3_1.0_2012 1Atrazine EPA 525.3_1.0_2012 1Benzo(a)anthracene EPA 525.3_1.0_2012 1Benzo(a)pyrene EPA 525.3_1.0_2012 1Benzo(g,h,i)perylene EPA 525.3_1.0_2012 1Benzo(k)fluoranthene EPA 525.3_1.0_2012 1Benzo[b]fluoranthene EPA 525.3_1.0_2012 1Bromacil EPA 525.3_1.0_2012 1Butachlor EPA 525.3_1.0_2012 1Butyl benzyl phthalate EPA 525.3_1.0_2012 1Chlorpyrifos EPA 525.3_1.0_2012 1Chrysene EPA 525.3_1.0_2012 1Di(2-ethylhexyl)adipate EPA 525.3_1.0_2012 1Di(2-ethylhexyl)phthalate EPA 525.3_1.0_2012 1Diazinon EPA 525.3_1.0_2012 1Dibenz(a,h) anthracene EPA 525.3_1.0_2012 1

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Matrix/Analyte Method Notes

BSK Associates

Diethyl phthalate EPA 525.3_1.0_2012 1Dimethyl phthalate EPA 525.3_1.0_2012 1Di-n-butyl phthalate EPA 525.3_1.0_2012 1Di-n-octyl phthalate EPA 525.3_1.0_2012 1Fluoranthene EPA 525.3_1.0_2012 1Fluorene EPA 525.3_1.0_2012 1Indeno(1,2,3-cd) pyrene EPA 525.3_1.0_2012 1Metolachlor EPA 525.3_1.0_2012 1Metribuzin EPA 525.3_1.0_2012 1Molinate EPA 525.3_1.0_2012 1Naphthalene EPA 525.3_1.0_2012 1Phenanthrene EPA 525.3_1.0_2012 1Prometryn EPA 525.3_1.0_2012 1Propachlor (Ramrod) EPA 525.3_1.0_2012 1Pyrene EPA 525.3_1.0_2012 1Simazine EPA 525.3_1.0_2012 1Thiobencarb EPA 525.3_1.0_2012 1Trifluralin (Treflan) EPA 525.3_1.0_2012 1Perfluorobutane sulfonate (PFBS) EPA 537_1.1_2009 1Perfluoroheptanoic acid (PFHPA) EPA 537_1.1_2009 1Perfluorohexane sulfonate (PFHXS) EPA 537_1.1_2009 1Perfluorononanoic acid (PFNA) EPA 537_1.1_2009 1Perfluorooctane sulfonate (PFOS) EPA 537_1.1_2009 1Perfluorooctanoic acid (PFOA) EPA 537_1.1_2009 1Endothall EPA 548.1_1_1992 1Radium-226 GA Tech Ra-226/228

Rev 1.2 (2004)1

Radium-228 GA Tech Ra-226/228 Rev 1.2 (2004)

1

Gross Alpha SM 7110 C GPC-11 1

Non-Potable Water

non-Polar Extractable Material (TPH) EPA 1664B (SGT-HEM) 1n-Hexane Extractable Material (O&G) EPA 1664B -10 (HEM) 1Chromium, Hexavalent EPA 218.6_3.3_1994 1Chromium, Hexavalent EPA 218.7_1_2011 1Bromide EPA 300.0_2.1_1993 1

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Matrix/Analyte Method Notes

BSK Associates

Chloride EPA 300.0_2.1_1993 1Fluoride EPA 300.0_2.1_1993 1Nitrate EPA 300.0_2.1_1993 1Nitrate + Nitrite EPA 300.0_2.1_1993 1Nitrite EPA 300.0_2.1_1993 1Orthophosphate EPA 300.0_2.1_1993 1Sulfate EPA 300.0_2.1_1993 1Bromide EPA 300.1_1_1997 1Chlorate EPA 300.1_1_1997 1Chlorite EPA 300.1_1_1997 1Perchlorate EPA 314.0-99 1Bromate EPA 317.0_2_2001 1Ammonia EPA 350.1_2_1993 1Nitrogen, Total Kjeldahl EPA 351.2_2_1993 1Phosphorus, Total EPA 365.4_1974 1Turbidity SM 2130 B-2011 1Alkalinity SM 2320 B-2011 1Hardness (calc.) SM 2340 B-2011 1Specific Conductance SM 2510 B-2011 1Solids, Total SM 2540 B-2011 1,2Solids, Total Dissolved SM 2540 C-2011 1Solids, Total Suspended SM 2540 D-2011 1Solids, Total, Fixed and Volatile SM 2540 E-2011 1,2Solids, Settleable SM 2540 F-2011 1Cyanide, Weak Acid Dissociable SM 4500 CN¯I-2011 1Cyanide, Total SM 4500-CN¯ E-2011 1Fluoride SM 4500-F¯ C-2011 1Orthophosphate SM 4500-P E-2011 1Phosphorus, Total SM 4500-P E-2011 1Biochemical Oxygen Demand (BOD) SM 5210 B-2011 1Carbonaceous BOD (CBOD) SM 5210 B-2011 1Chemical Oxygen Demand (COD) SM 5220 D-2011 1Dissolved Organic Carbon SM 5310 C-2011 1Total Organic Carbon SM 5310 C-2011 1n-Hexane Extractable Material (O&G) SM 5520 B-2011 1n-Hexane Extractable Material (O&G) SM 5520 F-2011 1

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BSK Associates

Anionic Surfactants (MBAS) SM 5540 C-2011 1Aluminum EPA 200.7_4.4_1994 1Barium EPA 200.7_4.4_1994 1Boron EPA 200.7_4.4_1994 1Cadmium EPA 200.7_4.4_1994 1Calcium EPA 200.7_4.4_1994 1Chromium EPA 200.7_4.4_1994 1Copper EPA 200.7_4.4_1994 1Iron EPA 200.7_4.4_1994 1Lead EPA 200.7_4.4_1994 1Magnesium EPA 200.7_4.4_1994 1Manganese EPA 200.7_4.4_1994 1Molybdenum EPA 200.7_4.4_1994 1Nickel EPA 200.7_4.4_1994 1Potassium EPA 200.7_4.4_1994 1Silica EPA 200.7_4.4_1994 1Silver EPA 200.7_4.4_1994 1Sodium EPA 200.7_4.4_1994 1Tin EPA 200.7_4.4_1994 1Titanium EPA 200.7_4.4_1994 1Zinc EPA 200.7_4.4_1994 1Aluminum EPA 200.8_5.4_1994 1Antimony EPA 200.8_5.4_1994 1Arsenic EPA 200.8_5.4_1994 1Barium EPA 200.8_5.4_1994 1Beryllium EPA 200.8_5.4_1994 1Boron EPA 200.8_5.4_1994 1Cadmium EPA 200.8_5.4_1994 1Chromium EPA 200.8_5.4_1994 1Cobalt EPA 200.8_5.4_1994 1Copper EPA 200.8_5.4_1994 1Iron EPA 200.8_5.4_1994 1Lead EPA 200.8_5.4_1994 1Manganese EPA 200.8_5.4_1994 1Molybdenum EPA 200.8_5.4_1994 1Nickel EPA 200.8_5.4_1994 1

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Matrix/Analyte Method Notes

BSK Associates

Selenium EPA 200.8_5.4_1994 1,2Silver EPA 200.8_5.4_1994 1Thallium EPA 200.8_5.4_1994 1Tin EPA 200.8_5.4_1994 1Vanadium EPA 200.8_5.4_1994 1Zinc EPA 200.8_5.4_1994 1Mercury EPA 245.7_2005 14,4'-DDD EPA 608 14,4'-DDE EPA 608 14,4'-DDT EPA 608 1Aldrin EPA 608 1alpha-BHC (alpha-Hexachlorocyclohexane) EPA 608 1Aroclor-1016 (PCB-1016) EPA 608 1,2Aroclor-1221 (PCB-1221) EPA 608 1,2Aroclor-1232 (PCB-1232) EPA 608 1,2Aroclor-1242 (PCB-1242) EPA 608 1,2Aroclor-1248 (PCB-1248) EPA 608 1,2Aroclor-1254 (PCB-1254) EPA 608 1,2Aroclor-1260 (PCB-1260) EPA 608 1,2beta-BHC (beta-Hexachlorocyclohexane) EPA 608 1Chlordane (tech.) EPA 608 1delta-BHC EPA 608 1Dieldrin EPA 608 1Endosulfan I EPA 608 1Endosulfan II EPA 608 1Endosulfan sulfate EPA 608 1Endrin EPA 608 1Endrin aldehyde EPA 608 1Endrin ketone EPA 608 1gamma-BHC (Lindane, gamma-Hexachlorocyclohexane) EPA 608 1Heptachlor EPA 608 1Heptachlor epoxide EPA 608 1Methoxychlor EPA 608 1Toxaphene (Chlorinated camphene) EPA 608 11,1,1-Trichloroethane EPA 624 11,1,2,2-Tetrachloroethane EPA 624 1

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Matrix/Analyte Method Notes

BSK Associates

1,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113) EPA 624 11,1,2-Trichloroethane EPA 624 11,1-Dichloroethane EPA 624 11,1-Dichloroethylene EPA 624 11,2-Dichlorobenzene EPA 624 11,2-Dichloroethane (Ethylene dichloride) EPA 624 11,2-Dichloropropane EPA 624 11,3-Dichlorobenzene EPA 624 11,3-Dichloropropene EPA 624 11,4-Dichlorobenzene EPA 624 12-Butanone (Methyl ethyl ketone, MEK) EPA 624 12-Chloroethyl vinyl ether EPA 624 12-Hexanone EPA 624 14-Methyl-2-pentanone (MIBK) EPA 624 1Acetone EPA 624 1Acrolein (Propenal) EPA 624 1Acrylonitrile EPA 624 1Benzene EPA 624 1Bromodichloromethane EPA 624 1Bromoform EPA 624 1Carbon disulfide EPA 624 1Carbon tetrachloride EPA 624 1Chlorobenzene EPA 624 1Chlorodibromomethane EPA 624 1Chloroethane (Ethyl chloride) EPA 624 1Chloroform EPA 624 1cis-1,2-Dichloroethylene EPA 624 1cis-1,3-Dichloropropene EPA 624 1Dibromochloropropane EPA 624 1Ethylbenzene EPA 624 1m+p-xylene EPA 624 1Methyl bromide (Bromomethane) EPA 624 1Methyl chloride (Chloromethane) EPA 624 1Methyl tert-butyl ether (MTBE) EPA 624 1Methylene chloride (Dichloromethane) EPA 624 1o-Xylene EPA 624 1

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Matrix/Analyte Method Notes

BSK Associates

Styrene EPA 624 1Tetrachloroethylene (Perchloroethylene) EPA 624 1Toluene EPA 624 1trans-1,2-Dichloroethylene EPA 624 1trans-1,3-Dichloropropylene EPA 624 1Trichloroethene (Trichloroethylene) EPA 624 1Trichlorofluoromethane (Freon 11) EPA 624 1Vinyl chloride EPA 624 1Xylene (total) EPA 624 11,2,4-Trichlorobenzene EPA 625 11,2-Diphenylhydrazine EPA 625 11,4-Dichlorobenzene EPA 625 11-Methylnaphthalene EPA 625 12,4,6-Trichlorophenol EPA 625 12,4-Dichlorophenol EPA 625 12,4-Dimethylphenol EPA 625 12,4-Dinitrophenol EPA 625 12,4-Dinitrotoluene (2,4-DNT) EPA 625 12,6-Dinitrotoluene (2,6-DNT) EPA 625 12-Chloronaphthalene EPA 625 12-Chlorophenol EPA 625 12-Nitrophenol EPA 625 13,3'-Dichlorobenzidine EPA 625 13-Methylcholanthrene EPA 625 14,6-Dinitro-2-methylphenol EPA 625 14-Bromophenyl phenyl ether (BDE-3) EPA 625 14-Chloro-3-methylphenol EPA 625 14-Chlorophenyl phenylether EPA 625 14-Nitrophenol EPA 625 1Acenaphthene EPA 625 1Acenaphthylene EPA 625 1Anthracene EPA 625 1Benzidine EPA 625 1Benzo(a)anthracene EPA 625 1Benzo(a)pyrene EPA 625 1Benzo(g,h,i)perylene EPA 625 1

Page 12 of 24Washington State Department of Ecology Effective Date: 3/11/2019

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Scope Expires: 3/10/2020Scope of Accreditation Report for BSK Associates

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Matrix/Analyte Method Notes

BSK Associates

Benzo(j)fluoranthene EPA 625 1Benzo(k)fluoranthene EPA 625 1Benzo[b]fluoranthene EPA 625 1bis(2-Chloroethoxy)methane EPA 625 1bis(2-Chloroethyl) ether EPA 625 1bis(2-Chloroisopropyl) ether EPA 625 1bis(2-Ethylhexyl) phthalate (DEHP) EPA 625 1Butyl benzyl phthalate EPA 625 1Chrysene EPA 625 1Dibenz(a,h) acridine EPA 625 1Dibenz(a,h) anthracene EPA 625 1Dibenz(a,j) acridine EPA 625 1Dibenzo(a,e) pyrene EPA 625 1Dibenzo(a,h) pyrene EPA 625 1Dibenzo(a,i) pyrene EPA 625 1Diethyl phthalate EPA 625 1Dimethyl phthalate EPA 625 1Di-n-butyl phthalate EPA 625 1Di-n-octyl phthalate EPA 625 1Fluoranthene EPA 625 1Fluorene EPA 625 1Hexachlorobenzene EPA 625 1Hexachlorobutadiene EPA 625 1Hexachlorocyclopentadiene EPA 625 1Indeno(1,2,3-cd) pyrene EPA 625 1Isophorone EPA 625 1Naphthalene EPA 625 1Nitrobenzene EPA 625 1N-Nitrosodimethylamine EPA 625 1N-Nitroso-di-n-propylamine EPA 625 1N-Nitrosodiphenylamine EPA 625 1Pentachlorophenol EPA 625 1Perylene EPA 625 1Phenanthrene EPA 625 1Phenol EPA 625 1Pyrene EPA 625 1

Page 13 of 24Washington State Department of Ecology Effective Date: 3/11/2019

Laboratory Accreditation Unit

Scope Expires: 3/10/2020Scope of Accreditation Report for BSK Associates

C997-19

Matrix/Analyte Method Notes

BSK Associates

Solid and Chemical Materials

Chloride EPA 300.0_2.1_1993 1Fluoride EPA 300.0_2.1_1993 1Nitrate EPA 300.0_2.1_1993 1Nitrate + Nitrite EPA 300.0_2.1_1993 1Nitrite EPA 300.0_2.1_1993 1Orthophosphate EPA 300.0_2.1_1993 1Orthophosphate EPA 300.0_2.1_1993 1Sulfate EPA 300.0_2.1_1993 1Ammonia EPA 350.1_2_1993 1Chromium, Hexavalent EPA 7199_0_(12/96) 1pH EPA 9040 B-1995 1pH EPA 9045C_3_1995 1Fluoride EPA 9214_1996 1Alkalinity SM 2320 B-2011 1Specific Conductance SM 2510 B-2011 1Total Organic Carbon Walkley-Black 1Aluminum EPA 6010B_2_1996 1Barium EPA 6010B_2_1996 1Boron EPA 6010B_2_1996 1Cadmium EPA 6010B_2_1996 1Calcium EPA 6010B_2_1996 1Chromium EPA 6010B_2_1996 1Cobalt EPA 6010B_2_1996 1Copper EPA 6010B_2_1996 1Iron EPA 6010B_2_1996 1Lead EPA 6010B_2_1996 1Magnesium EPA 6010B_2_1996 1Manganese EPA 6010B_2_1996 1Molybdenum EPA 6010B_2_1996 1Nickel EPA 6010B_2_1996 1Potassium EPA 6010B_2_1996 1Silver EPA 6010B_2_1996 1Sodium EPA 6010B_2_1996 1Tin EPA 6010B_2_1996 1

Page 14 of 24Washington State Department of Ecology Effective Date: 3/11/2019

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Scope Expires: 3/10/2020Scope of Accreditation Report for BSK Associates

C997-19

Matrix/Analyte Method Notes

BSK Associates

Vanadium EPA 6010B_2_1996 1Zinc EPA 6010B_2_1996 1Antimony EPA 6020_0_1994 1Arsenic EPA 6020_0_1994 1Barium EPA 6020_0_1994 1Beryllium EPA 6020_0_1994 1Cadmium EPA 6020_0_1994 1Chromium EPA 6020_0_1994 1Cobalt EPA 6020_0_1994 1Copper EPA 6020_0_1994 1Lead EPA 6020_0_1994 1Molybdenum EPA 6020_0_1994 1Nickel EPA 6020_0_1994 1Selenium EPA 6020_0_1994 1Silver EPA 6020_0_1994 1Thallium EPA 6020_0_1994 1Vanadium EPA 6020_0_1994 1Zinc EPA 6020_0_1994 1Mercury EPA 6020A_(2/07) 12,4'-DDD EPA 8081A_1_1996 12,4'-DDE EPA 8081A_1_1996 12,4'-DDT EPA 8081A_1_1996 14,4'-DDD EPA 8081A_1_1996 14,4'-DDE EPA 8081A_1_1996 14,4'-DDT EPA 8081A_1_1996 1Aldrin EPA 8081A_1_1996 1alpha-BHC (alpha-Hexachlorocyclohexane) EPA 8081A_1_1996 1alpha-Chlordane EPA 8081A_1_1996 1beta-BHC (beta-Hexachlorocyclohexane) EPA 8081A_1_1996 1Chlordane (tech.) EPA 8081A_1_1996 1delta-BHC EPA 8081A_1_1996 1Dieldrin EPA 8081A_1_1996 1Endosulfan I EPA 8081A_1_1996 1Endosulfan II EPA 8081A_1_1996 1Endosulfan sulfate EPA 8081A_1_1996 1Endrin EPA 8081A_1_1996 1

Page 15 of 24Washington State Department of Ecology Effective Date: 3/11/2019

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Scope Expires: 3/10/2020Scope of Accreditation Report for BSK Associates

C997-19

Matrix/Analyte Method Notes

BSK Associates

Endrin aldehyde EPA 8081A_1_1996 1Endrin ketone EPA 8081A_1_1996 1gamma-BHC (Lindane, gamma-Hexachlorocyclohexane) EPA 8081A_1_1996 1gamma-Chlordane EPA 8081A_1_1996 1Heptachlor EPA 8081A_1_1996 1Heptachlor epoxide EPA 8081A_1_1996 1Hexachlorobenzene EPA 8081A_1_1996 1Hexachlorocyclopentadiene EPA 8081A_1_1996 1Methoxychlor EPA 8081A_1_1996 1Toxaphene (Chlorinated camphene) EPA 8081A_1_1996 1Aroclor-1016 (PCB-1016) EPA 8082_1996 1Aroclor-1221 (PCB-1221) EPA 8082_1996 1Aroclor-1232 (PCB-1232) EPA 8082_1996 1Aroclor-1242 (PCB-1242) EPA 8082_1996 1Aroclor-1248 (PCB-1248) EPA 8082_1996 1Aroclor-1254 (PCB-1254) EPA 8082_1996 1Aroclor-1260 (PCB-1260) EPA 8082_1996 11,1,1,2-Tetrachloroethane EPA 8260B_2_1996 11,1,1-Trichloroethane EPA 8260B_2_1996 11,1,2,2-Tetrachloroethane EPA 8260B_2_1996 11,1,2-Trichloro-1,2,2-trifluoroethane (Freon 113) EPA 8260B_2_1996 11,1,2-Trichloroethane EPA 8260B_2_1996 11,1-Dichloroethane EPA 8260B_2_1996 11,1-Dichloroethylene EPA 8260B_2_1996 11,1-Dichloropropene EPA 8260B_2_1996 11,2,3-Trichlorobenzene EPA 8260B_2_1996 11,2,3-Trichloropropane EPA 8260B_2_1996 11,2,4-Trichlorobenzene EPA 8260B_2_1996 11,2,4-Trimethylbenzene EPA 8260B_2_1996 11,2-Dibromo-3-chloropropane (DBCP) EPA 8260B_2_1996 11,2-Dibromoethane (EDB, Ethylene dibromide) EPA 8260B_2_1996 11,2-Dichlorobenzene EPA 8260B_2_1996 11,2-Dichloroethane (Ethylene dichloride) EPA 8260B_2_1996 11,2-Dichloropropane EPA 8260B_2_1996 11,3,5-Trimethylbenzene EPA 8260B_2_1996 11,3-Dichlorobenzene EPA 8260B_2_1996 1

Page 16 of 24Washington State Department of Ecology Effective Date: 3/11/2019

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Scope Expires: 3/10/2020Scope of Accreditation Report for BSK Associates

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Matrix/Analyte Method Notes

BSK Associates

1,3-Dichloropropane EPA 8260B_2_1996 11,4-Dichlorobenzene EPA 8260B_2_1996 12,2-Dichloropropane EPA 8260B_2_1996 12-Butanone (Methyl ethyl ketone, MEK) EPA 8260B_2_1996 12-Chloroethyl vinyl ether EPA 8260B_2_1996 12-Chlorotoluene EPA 8260B_2_1996 12-Hexanone EPA 8260B_2_1996 14-Chlorotoluene EPA 8260B_2_1996 14-Isopropyltoluene (p-Cymene) EPA 8260B_2_1996 14-Methyl-2-pentanone (MIBK) EPA 8260B_2_1996 1Acetone EPA 8260B_2_1996 1Acetonitrile EPA 8260B_2_1996 1,3Acrolein (Propenal) EPA 8260B_2_1996 1Acrylonitrile EPA 8260B_2_1996 1,3Benzene EPA 8260B_2_1996 1Bromobenzene EPA 8260B_2_1996 1Bromochloromethane EPA 8260B_2_1996 1Bromodichloromethane EPA 8260B_2_1996 1Bromoform EPA 8260B_2_1996 1Carbon disulfide EPA 8260B_2_1996 1Carbon tetrachloride EPA 8260B_2_1996 1Chlorobenzene EPA 8260B_2_1996 1Chlorodibromomethane EPA 8260B_2_1996 1Chloroethane (Ethyl chloride) EPA 8260B_2_1996 1Chloroform EPA 8260B_2_1996 1Chloroprene (2-Chloro-1,3-butadiene) EPA 8260B_2_1996 1cis-1,2-Dichloroethylene EPA 8260B_2_1996 1cis-1,3-Dichloropropene EPA 8260B_2_1996 1Dibromochloropropane EPA 8260B_2_1996 1Dibromomethane EPA 8260B_2_1996 1Dichlorodifluoromethane (Freon-12) EPA 8260B_2_1996 1Di-isopropylether (DIPE) EPA 8260B_2_1996 1Ethanol EPA 8260B_2_1996 1Ethyl methacrylate EPA 8260B_2_1996 1Ethylbenzene EPA 8260B_2_1996 1Ethyl-t-butylether (ETBE) EPA 8260B_2_1996 1

Page 17 of 24Washington State Department of Ecology Effective Date: 3/11/2019

Laboratory Accreditation Unit

Scope Expires: 3/10/2020Scope of Accreditation Report for BSK Associates

C997-19

Matrix/Analyte Method Notes

BSK Associates

Hexachlorobutadiene EPA 8260B_2_1996 1Hexachloroethane EPA 8260B_2_1996 1Iodomethane (Methyl iodide) EPA 8260B_2_1996 1Isobutyl alcohol (2-Methyl-1-propanol) EPA 8260B_2_1996 1Isopropylbenzene EPA 8260B_2_1996 1m+p-xylene EPA 8260B_2_1996 1Methacrylonitrile EPA 8260B_2_1996 1Methyl bromide (Bromomethane) EPA 8260B_2_1996 1Methyl chloride (Chloromethane) EPA 8260B_2_1996 1Methyl methacrylate EPA 8260B_2_1996 1Methyl tert-butyl ether (MTBE) EPA 8260B_2_1996 1Methylene chloride (Dichloromethane) EPA 8260B_2_1996 1Naphthalene EPA 8260B_2_1996 1n-Butylbenzene EPA 8260B_2_1996 1n-Propylbenzene EPA 8260B_2_1996 1o-Xylene EPA 8260B_2_1996 1Propionitrile (Ethyl cyanide) EPA 8260B_2_1996 1sec-Butylbenzene EPA 8260B_2_1996 1Styrene EPA 8260B_2_1996 1tert-amylmethylether (TAME) EPA 8260B_2_1996 1tert-Butyl alcohol EPA 8260B_2_1996 1tert-Butylbenzene EPA 8260B_2_1996 1Tetrachloroethylene (Perchloroethylene) EPA 8260B_2_1996 1Toluene EPA 8260B_2_1996 1trans-1,2-Dichloroethylene EPA 8260B_2_1996 1trans-1,3-Dichloropropylene EPA 8260B_2_1996 1trans-1,4-Dichloro-2-butene EPA 8260B_2_1996 1Trichloroethene (Trichloroethylene) EPA 8260B_2_1996 1Trichlorofluoromethane (Freon 11) EPA 8260B_2_1996 1Vinyl acetate EPA 8260B_2_1996 1,3Vinyl chloride EPA 8260B_2_1996 1Xylene (total) EPA 8260B_2_1996 11,2,4,5-Tetrachlorobenzene EPA 8270C_3_1996 11,2,4-Trichlorobenzene EPA 8270C_3_1996 11,2-Dichlorobenzene EPA 8270C_3_1996 11,2-Dinitrobenzene EPA 8270C_3_1996 1

Page 18 of 24Washington State Department of Ecology Effective Date: 3/11/2019

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Scope Expires: 3/10/2020Scope of Accreditation Report for BSK Associates

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Matrix/Analyte Method Notes

BSK Associates

1,2-Diphenylhydrazine EPA 8270C_3_1996 11,3,5-Trinitrobenzene (1,3,5-TNB) EPA 8270C_3_1996 11,3-Dichlorobenzene EPA 8270C_3_1996 11,3-Dinitrobenzene (1,3-DNB) EPA 8270C_3_1996 11,4-Dichlorobenzene EPA 8270C_3_1996 11,4-Dinitrobenzene EPA 8270C_3_1996 11,4-Naphthoquinone EPA 8270C_3_1996 11,4-Phenylenediamine EPA 8270C_3_1996 11-Methylnaphthalene EPA 8270C_3_1996 11-Naphthylamine EPA 8270C_3_1996 12,3,4,6-Tetrachlorophenol EPA 8270C_3_1996 12,4,5-Trichlorophenol EPA 8270C_3_1996 12,4,6-Trichlorophenol EPA 8270C_3_1996 12,4-Dichlorophenol EPA 8270C_3_1996 12,4-Dimethylphenol EPA 8270C_3_1996 12,4-Dinitrophenol EPA 8270C_3_1996 12,4-Dinitrotoluene (2,4-DNT) EPA 8270C_3_1996 12,6-Dichlorophenol EPA 8270C_3_1996 12,6-Dinitrotoluene (2,6-DNT) EPA 8270C_3_1996 12-Acetylaminofluorene EPA 8270C_3_1996 12-Chloronaphthalene EPA 8270C_3_1996 12-Chlorophenol EPA 8270C_3_1996 12-Methyl-4,6-dinitrophenol EPA 8270C_3_1996 12-Methylaniline (o-Toluidine) EPA 8270C_3_1996 12-Methylnaphthalene EPA 8270C_3_1996 1,32-Methylphenol (o-Cresol) EPA 8270C_3_1996 12-Naphthylamine EPA 8270C_3_1996 12-Nitroaniline EPA 8270C_3_1996 12-Nitrophenol EPA 8270C_3_1996 13,3'-Dichlorobenzidine EPA 8270C_3_1996 13,3'-Dimethylbenzidine EPA 8270C_3_1996 13-Methylcholanthrene EPA 8270C_3_1996 13-Methylphenol (m-Cresol) EPA 8270C_3_1996 13-Nitroaniline EPA 8270C_3_1996 14-Aminobiphenyl EPA 8270C_3_1996 14-Bromophenyl phenyl ether (BDE-3) EPA 8270C_3_1996 1

Page 19 of 24Washington State Department of Ecology Effective Date: 3/11/2019

Laboratory Accreditation Unit

Scope Expires: 3/10/2020Scope of Accreditation Report for BSK Associates

C997-19

Matrix/Analyte Method Notes

BSK Associates

4-Chloro-3-methylphenol EPA 8270C_3_1996 14-Chloroaniline EPA 8270C_3_1996 14-Chlorophenyl phenylether EPA 8270C_3_1996 14-Dimethyl aminoazobenzene EPA 8270C_3_1996 14-Methylphenol (p-Cresol) EPA 8270C_3_1996 14-Nitroaniline EPA 8270C_3_1996 14-Nitrophenol EPA 8270C_3_1996 15-Nitro-o-toluidine EPA 8270C_3_1996 17,12-Dimethylbenz(a) anthracene EPA 8270C_3_1996 1Acenaphthene EPA 8270C_3_1996 1Acenaphthylene EPA 8270C_3_1996 1Acetophenone EPA 8270C_3_1996 1Allethrin EPA 8270C_3_1996 1Aniline EPA 8270C_3_1996 1Anthracene EPA 8270C_3_1996 1Atrazine EPA 8270C_3_1996 1,3Azinphos-methyl (Guthion) EPA 8270C_3_1996 1Azobenzene EPA 8270C_3_1996 1Benzidine EPA 8270C_3_1996 1Benzo(a)anthracene EPA 8270C_3_1996 1Benzo(a)pyrene EPA 8270C_3_1996 1Benzo(g,h,i)perylene EPA 8270C_3_1996 1Benzo(j)fluoranthene EPA 8270C_3_1996 1Benzo(k)fluoranthene EPA 8270C_3_1996 1Benzo[b]fluoranthene EPA 8270C_3_1996 1Benzoic acid EPA 8270C_3_1996 1Benzyl alcohol EPA 8270C_3_1996 1Bifenthrin EPA 8270C_3_1996 1bis(2-Chloroethoxy)methane EPA 8270C_3_1996 1bis(2-Chloroethyl) ether EPA 8270C_3_1996 1bis(2-Chloroisopropyl) ether EPA 8270C_3_1996 1Bolstar (Sulprofos) EPA 8270C_3_1996 1Butyl benzyl phthalate EPA 8270C_3_1996 1Chlorobenzilate EPA 8270C_3_1996 1Chlorpyrifos EPA 8270C_3_1996 1Chrysene EPA 8270C_3_1996 1

Page 20 of 24Washington State Department of Ecology Effective Date: 3/11/2019

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Scope Expires: 3/10/2020Scope of Accreditation Report for BSK Associates

C997-19

Matrix/Analyte Method Notes

BSK Associates

cis-Permethrin EPA 8270C_3_1996 1Coumaphos EPA 8270C_3_1996 1Cyanazine EPA 8270C_3_1996 1Cyfluthrin EPA 8270C_3_1996 1Cypermethrin EPA 8270C_3_1996 1Deltamethrine EPA 8270C_3_1996 1Demeton-o EPA 8270C_3_1996 1Demeton-s EPA 8270C_3_1996 1Di(2-ethylhexyl)adipate EPA 8270C_3_1996 1Di(2-ethylhexyl)phthalate EPA 8270C_3_1996 1Diallate EPA 8270C_3_1996 1Diazinon EPA 8270C_3_1996 1Dibenz(a,h) acridine EPA 8270C_3_1996 1Dibenz(a,h) anthracene EPA 8270C_3_1996 1Dibenz(a,j) acridine EPA 8270C_3_1996 1Dibenzo(a,e) pyrene EPA 8270C_3_1996 1Dibenzo(a,h) pyrene EPA 8270C_3_1996 1Dibenzo(a,i) pyrene EPA 8270C_3_1996 1Dibenzofuran EPA 8270C_3_1996 1Dichloran EPA 8270C_3_1996 1Dichlorovos (DDVP, Dichlorvos) EPA 8270C_3_1996 1Dicofol EPA 8270C_3_1996 1Diethyl phthalate EPA 8270C_3_1996 1Dimethoate EPA 8270C_3_1996 1Dimethyl phthalate EPA 8270C_3_1996 1Di-n-butyl phthalate EPA 8270C_3_1996 1Di-n-octyl phthalate EPA 8270C_3_1996 1Diphenylamine EPA 8270C_3_1996 1Disulfoton EPA 8270C_3_1996 1EPN EPA 8270C_3_1996 1Ethion EPA 8270C_3_1996 1,3Ethoprop EPA 8270C_3_1996 1,3Ethyl methanesulfonate EPA 8270C_3_1996 1Famphur EPA 8270C_3_1996 1Fenpropathrin EPA 8270C_3_1996 1Fensulfothion EPA 8270C_3_1996 1

Page 21 of 24Washington State Department of Ecology Effective Date: 3/11/2019

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Scope Expires: 3/10/2020Scope of Accreditation Report for BSK Associates

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Matrix/Analyte Method Notes

BSK Associates

Fenthion EPA 8270C_3_1996 1Fenvalerate EPA 8270C_3_1996 1Fluoranthene EPA 8270C_3_1996 1Fluorene EPA 8270C_3_1996 1Hexachlorobenzene EPA 8270C_3_1996 1Hexachlorobutadiene EPA 8270C_3_1996 1Hexachlorocyclopentadiene EPA 8270C_3_1996 1Hexachloroethane EPA 8270C_3_1996 1Hexachloropropene EPA 8270C_3_1996 1Indeno(1,2,3-cd) pyrene EPA 8270C_3_1996 1Isodrin EPA 8270C_3_1996 1Isophorone EPA 8270C_3_1996 1Isosafrole EPA 8270C_3_1996 1Kepone EPA 8270C_3_1996 1lambda-Cyhalothrin EPA 8270C_3_1996 1Malathion EPA 8270C_3_1996 1Methapyrilene EPA 8270C_3_1996 1Methyl methanesulfonate EPA 8270C_3_1996 1Methyl parathion (Parathion, methyl) EPA 8270C_3_1996 1,3Mevinphos EPA 8270C_3_1996 1Monocrotophos EPA 8270C_3_1996 1Naled EPA 8270C_3_1996 1Naphthalene EPA 8270C_3_1996 1Nitrobenzene EPA 8270C_3_1996 1N-Nitrosodiethylamine EPA 8270C_3_1996 1N-Nitrosodimethylamine EPA 8270C_3_1996 1N-Nitroso-di-n-butylamine EPA 8270C_3_1996 1N-Nitrosodiphenylamine EPA 8270C_3_1996 1N-Nitrosodipropylamine EPA 8270C_3_1996 1N-Nitrosomethylethalamine EPA 8270C_3_1996 1N-Nitrosopiperidine EPA 8270C_3_1996 1N-Nitrosopyrrolidine EPA 8270C_3_1996 1o,o,o-Triethyl phosphorothioate EPA 8270C_3_1996 1Parathion, ethyl EPA 8270C_3_1996 1Pendimethaline (Penoxalin) EPA 8270C_3_1996 1Pentachlorobenzene EPA 8270C_3_1996 1

Page 22 of 24Washington State Department of Ecology Effective Date: 3/11/2019

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C997-19

Matrix/Analyte Method Notes

BSK Associates

Pentachloronitrobenzene EPA 8270C_3_1996 1Pentachlorophenol EPA 8270C_3_1996 1Perylene EPA 8270C_3_1996 1Phenacetin EPA 8270C_3_1996 1Phenanthrene EPA 8270C_3_1996 1Phenol EPA 8270C_3_1996 1Phorate EPA 8270C_3_1996 1Phosmet (Imidan) EPA 8270C_3_1996 1,3Piperonyl butoxide EPA 8270C_3_1996 1Prallethrin EPA 8270C_3_1996 1Prometryn EPA 8270C_3_1996 1,3Pronamide (Kerb) EPA 8270C_3_1996 1Pyrene EPA 8270C_3_1996 1Pyridine EPA 8270C_3_1996 1Ronnel EPA 8270C_3_1996 1Safrole EPA 8270C_3_1996 1Simazine EPA 8270C_3_1996 1Sulfotepp EPA 8270C_3_1996 1Sumithrin (Phenothrin) EPA 8270C_3_1996 1Tefluthrin EPA 8270C_3_1996 1Tetrachlorvinphos (Stirophos, Gardona) EPA 8270C_3_1996 1Thiobencarb EPA 8270C_3_1996 1Thionazin (Zinophos) EPA 8270C_3_1996 1Tokuthion (Prothiophos) EPA 8270C_3_1996 1trans Permethrin EPA 8270C_3_1996 1Trichloronate EPA 8270C_3_1996 1Trifluralin (Treflan) EPA 8270C_3_1996 13-Hydroxycarbofuran EPA 8321A_1_1996 1,3Aldicarb (Temik) EPA 8321A_1_1996 1,3Aldicarb sulfone EPA 8321A_1_1996 1,3Aldicarb sulfoxide EPA 8321A_1_1996 1,3Barban EPA 8321A_1_1996 1,3Carbaryl (Sevin) EPA 8321A_1_1996 1,3Carbofuran (Furaden) EPA 8321A_1_1996 1,3Chloropropham EPA 8321A_1_1996 1,3Demeton-o EPA 8321A_1_1996 1,3

Page 23 of 24Washington State Department of Ecology Effective Date: 3/11/2019

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Scope Expires: 3/10/2020Scope of Accreditation Report for BSK Associates

C997-19

Matrix/Analyte Method Notes

BSK Associates

Demeton-s EPA 8321A_1_1996 1,3Diuron EPA 8321A_1_1996 1,3Linuron (Lorox) EPA 8321A_1_1996 1,3Methamidophos EPA 8321A_1_1996 1,3Methiocarb (Mesurol) EPA 8321A_1_1996 1,3Methomyl (Lannate) EPA 8321A_1_1996 1,3Oxamyl EPA 8321A_1_1996 1,3Propoxur (Baygon) EPA 8321A_1_1996 1,3Gasoline range organics (GRO) WDOE NWTPH-

Gx_(1997)1

Authentication Signature

(1) Accreditation based in part on recognition of Oregon NELAP accreditation (ORELAP). (2) Provisional accreditation pending submittal of acceptable Proficiency Testing (PT) results (WAC 173-50-110). (3) Accrediltation is limited to liquid matrix only. (4) Provisional accreditation until May 10, 2019 pending submittal of acceptable Proficiency Testing (PT) results (WAC 173-50-110).

Accredited Parameter Note Detail

DateRebecca Wood, Lab Accreditation Unit Supervisor

04/22/2019

Page 24 of 24Washington State Department of Ecology Effective Date: 3/11/2019

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C997-19