Certificate of Accreditation

PERRY JOHNSON LABORATORY ACCREDITATION, INC. Certificate of Accreditation Perry Johnson Laboratory Accreditation, Inc. has assessed the Laboratory of: 6701 Aberdeen Avenue, Suite #9, Lubbock, TX 79424 (Hereinafter called the Organization) and hereby declares that Organization has met the requirements of ISO/IEC 17025:2005 General Requirements for the competence of Testing and Calibration Laboratories and the DoD Quality Systems Manual for Environmental Laboratories Version 4.2 10/26/2010 and is accredited is accordance with the: United States Department of Defense Environmental Laboratory Accreditation Program (DoD-ELAP) This accreditation demonstrates technical competence for the defined scope: Environmental Testing (As detailed in the supplement) Accreditation claims for such testing and/or calibration services shall only be made from addresses referenced within this certificate. This Accreditation is granted subject to the system rules governing the Accreditation referred to above, and the Organization hereby covenants with the Accreditation body s duty to observe and comply with the said rules. For PJLA: Tracy Szerszen President/Operations Manager Perry Johnson Laboratory Accreditation, Inc. (PJLA) 755 W. Big Beaver, Suite 1325 Troy, Michigan 48084 Initial Accreditation Date: Issue Date: Expiration Date: February 1, 2011 April 10, 2014 April 10, 2016 Accreditation No.: Certificate No.: 66991 L14-93 The validity of this certificate is maintained through ongoing assessments based on a continuous accreditation cycle. The validity of this certificate should be confirmed through the PJLA website: www.pjlabs.com Page 1 of 15

Aqueous EPA 1010 Flashpoint Flashpoint Aqueous EPA 150.1 Electrometric ph Aqueous EPA 160.2 Gravimetric TSS Aqueous EPA 160.4 Gravimetric TVS Aqueous EPA 180.1 Turbidimetric Turbidity Aqueous EPA 200.7 ICP Aluminum Aqueous EPA 200.7 ICP Antimony Aqueous EPA 200.7 ICP Arsenic Aqueous EPA 200.7 ICP Barium Aqueous EPA 200.7 ICP Beryllium Aqueous EPA 200.7 ICP Boron Aqueous EPA 200.7 ICP Cadmium Aqueous EPA 200.7 ICP Calcium Aqueous EPA 200.7 ICP Chromium Aqueous EPA 200.7 ICP Cobalt Aqueous EPA 200.7 ICP Copper Aqueous EPA 200.7 ICP Iron Aqueous EPA 200.7 ICP Lead Aqueous EPA 200.7 ICP Lithium Aqueous EPA 200.7 ICP Magnesium Aqueous EPA 200.7 ICP Manganese Aqueous EPA 200.7 ICP Molybdenum Aqueous EPA 200.7 ICP Nickel Aqueous EPA 200.7 ICP Phosphorus Aqueous EPA 200.7 ICP Potassium Aqueous EPA 200.7 ICP Selenium Aqueous EPA 200.7 ICP Silver Aqueous EPA 200.7 ICP Sodium Aqueous EPA 200.7 ICP Strontium Aqueous EPA 200.7 ICP Thallium Aqueous EPA 200.7 ICP Tin Aqueous EPA 200.7 ICP Titanium Aqueous EPA 200.7 ICP Vanadium Aqueous EPA 200.7 ICP Zinc Aqueous EPA 245.1 CVAA Mercury Issue 4/14 This supplement is in conjunction with certificate #L14-93 Page 2 of 15

Aqueous EPA 300.0 IC Bromide Aqueous EPA 300.0 IC Chloride Aqueous EPA 300.0 IC Fluoride Aqueous EPA 300.0 IC Nitrate as N Aqueous EPA 300.0 IC Nitrite as N Aqueous EPA 300.0 IC Sulfate Aqueous EPA 330.4 UV-VIS Chlorine (Free) Aqueous EPA 376.2 UV-VIS Sulfide Aqueous EPA 410.4 UV-VIS COD Aqueous EPA 420.2 UV-VIS Phenolics Aqueous EPA 602 GC FID/PID MTBE Aqueous EPA 602 GC FID/PID Benzene Aqueous EPA 602 GC FID/PID Ethyl Benzene Aqueous EPA 602 GC FID/PID Toluene Aqueous EPA 602 GC FID/PID Total Xylene Aqueous EPA 608 GC ECD Aldrin Aqueous EPA 608 GC ECD alpha-bhc Aqueous EPA 608 GC ECD alpha-chlordane Aqueous EPA 608 GC ECD beta-bhc Aqueous EPA 608 GC ECD delta-bhc Aqueous EPA 608 GC ECD Dieldrin Aqueous EPA 608 GC ECD Endosulfan I Aqueous EPA 608 GC ECD Endosulfan II Aqueous EPA 608 GC ECD Endosulfan sulfate Aqueous EPA 608 GC ECD Endrin Aqueous EPA 608 GC ECD Endrin aldehyde Aqueous EPA 608 GC ECD Endrin Ketone Aqueous EPA 608 GC ECD gamma-bhc (Lindane) Aqueous EPA 608 GC ECD gamma-chlordane Aqueous EPA 608 GC ECD Heptachlor Aqueous EPA 608 GC ECD Heptachlor Epoxide Aqueous EPA 608 GC ECD 4,4'-DDD Aqueous EPA 608 GC ECD 4,4'-DDE Aqueous EPA 608 GC ECD 4,4'-DDT Aqueous EPA 608 GC ECD Technical Chlordane Aqueous EPA 608 GC ECD Toxaphene Issue 4/14 This supplement is in conjunction with certificate #L14-93 Page 3 of 15

Aqueous EPA 624 GCMS 1,1,1-Trichloroethane Aqueous EPA 624 GCMS 1,1,2,2-Tetrachloroethane Aqueous EPA 624 GCMS 1,1,2-Trichloroethane Aqueous EPA 624 GCMS 1,1-Dichloroethane Aqueous EPA 624 GCMS 1,1-Dichloroethene Aqueous EPA 624 GCMS 1,1-Dichloropropene Aqueous EPA 624 GCMS 1,2-Dichlorobenzene (ortho) Aqueous EPA 624 GCMS 1,2-Dichloroethane (EDC) Aqueous EPA 624 GCMS 1,2-Dichloropropane Aqueous EPA 624 GCMS 1,3-Dichlorobenzene (meta) Aqueous EPA 624 GCMS 1,4-Dichlorobenzene (para) Aqueous EPA 624 GCMS 2-Chlorethyl vinyl ether Aqueous EPA 624 GCMS Acrylonitrile Aqueous EPA 624 GCMS Benzene Aqueous EPA 624 GCMS Bromodichloromethane Aqueous EPA 624 GCMS Bromoform Aqueous EPA 624 GCMS Bromomethane (methyl bromide) Aqueous EPA 624 GCMS Carbon Tetrachloride Aqueous EPA 624 GCMS Chlorobenzene Aqueous EPA 624 GCMS Chloroethane Aqueous EPA 624 GCMS Chloroform Aqueous EPA 624 GCMS Chloromethane (methyl chloride) Aqueous EPA 624 GCMS cis-1,3-dichloropropene Aqueous EPA 624 GCMS Dibromochloromethane Aqueous EPA 624 GCMS Dibromoethane (methylene bromide) Aqueous EPA 624 GCMS Dichlorodiflouromethane Aqueous EPA 624 GCMS Ethylbenzene Aqueous EPA 624 GCMS m,p-xylene Aqueous EPA 624 GCMS Methylene chloride Aqueous EPA 624 GCMS o-xylene Aqueous EPA 624 GCMS Tetrachloroethene (PCE) Aqueous EPA 624 GCMS Toluene Aqueous EPA 624 GCMS trans-1,2-dichloroethene Aqueous EPA 624 GCMS trans-1,3-dichloropropene Aqueous EPA 624 GCMS Trichlorethene (TCE) Issue 4/14 This supplement is in conjunction with certificate #L14-93 Page 4 of 15

Aqueous EPA 624 GCMS Trichloroflouromethane Aqueous EPA 624 GCMS Vinyl Chloride Aqueous EPA 625 GCMS 1,2,4-Trichlorobenzene Aqueous EPA 625 GCMS 1,2-Dichlorobenzene Aqueous EPA 625 GCMS 1,3-Dichlorobenzene Aqueous EPA 625 GCMS 1,4-Dichlorobenzene Aqueous EPA 625 GCMS 2,4,6-Trichlorophenol Aqueous EPA 625 GCMS 2,4-Dichlorophenol Aqueous EPA 625 GCMS 2,4-Dimethylphenol Aqueous EPA 625 GCMS 2,4-Dinitrophenol Aqueous EPA 625 GCMS 2,4-Dinitrotoluene Aqueous EPA 625 GCMS 2,6-Dinitrotoluene (2, 6 DNT) Aqueous EPA 625 GCMS 2-Chloronaphthalene Aqueous EPA 625 GCMS 2-Chlorophenol Aqueous EPA 625 GCMS 2-Nitrophenol Aqueous EPA 625 GCMS 3,3-Dichlorobenzidine Aqueous EPA 625 GCMS 4,6-Dinitro-2-methylphenol Aqueous EPA 625 GCMS 4-Bromophenyl-phenylether Aqueous EPA 625 GCMS 4-chloro-3-methylphenol Aqueous EPA 625 GCMS 4-Chlorophenyl-phenethylether Aqueous EPA 625 GCMS 4-Nitrophenol Aqueous EPA 625 GCMS Acenaphthene Aqueous EPA 625 GCMS Acenaphthylene Aqueous EPA 625 GCMS Anthracene Aqueous EPA 625 GCMS Benzidine Aqueous EPA 625 GCMS Benzo[a]anthracene Aqueous EPA 625 GCMS Benzo[a]pyrene Aqueous EPA 625 GCMS Benzo[b]fluoranthene Aqueous EPA 625 GCMS Benzo[g,h,i]perylene Aqueous EPA 625 GCMS Benzo[k]fluoranthene Aqueous EPA 625 GCMS bis (2-Chloroethyl) ether Aqueous EPA 625 GCMS bis (2-Chloroethyoxy) methane Aqueous EPA 625 GCMS bis (2-Chloroisopropyl) ether Aqueous EPA 625 GCMS bis(2-ethylhexyl)phthalate Aqueous EPA 625 GCMS Butyl benzyl phthalate Aqueous EPA 625 GCMS Chrysene Issue 4/14 This supplement is in conjunction with certificate #L14-93 Page 5 of 15

Aqueous EPA 625 GCMS Dibenzo[a,h]anthracene Aqueous EPA 625 GCMS Diethylphthalate Aqueous EPA 625 GCMS Dimethylphthalate Aqueous EPA 625 GCMS Di-n-butylphthalate Aqueous EPA 625 GCMS Di-n-octyl phthalate Aqueous EPA 625 GCMS Fluoranthene Aqueous EPA 625 GCMS Fluorene Aqueous EPA 625 GCMS Hexachlorobenzene Aqueous EPA 625 GCMS Hexachlorobutadiene Aqueous EPA 625 GCMS Hexachloroethane Aqueous EPA 625 GCMS Indeno[1,2,3-cd]pyrene Aqueous EPA 625 GCMS Isophorone Aqueous EPA 625 GCMS Naphthalene Aqueous EPA 625 GCMS Nitrobenzene Aqueous EPA 625 GCMS N-Nitrosodi-n-propylamine Aqueous EPA 625 GCMS N-Nitrosodimethylamine Aqueous EPA 625 GCMS N-Nitrosodiphenylamine Aqueous EPA 625 GCMS Pentachlorophenol Aqueous EPA 625 GCMS Phenanthrene Aqueous EPA 625 GCMS Phenol Aqueous EPA 625 GCMS Pyrene Aqueous EPA 7470A CVAA Mercury Aqueous EPA 8011 GC ECD 1,2-Dibromoethane (EDB) Aqueous EPA 8011 GC ECD 1,2-Dibromo-3-chloropropane (DBCP) Aqueous EPA 9040B Electrometric Corrosivity Aqueous EPA 9095A Physical Paint Filter Aqueous SM 2130B UV-VIS Turbidity Aqueous SM 2340B Calculation Hardness Aqueous SM 2510 B Electrometric Resistivity Aqueous SM 2540 D Gravimetric TSS Aqueous SM 2540 E Gravimetric Vs Aqueous SM 4500 H+ B Electrometric ph Aqueous SM 4500 SO3 B UV-VIS Sulfite Aqueous SM 4500-Cl F UV-VIS Chlorine (Free) Aqueous SM 4500-CN G UV-VIS Amenable Cyanide Issue 4/14 This supplement is in conjunction with certificate #L14-93 Page 6 of 15

Aqueous SM 5210 B Potentiometric Ion BOD Specific Electrode Aqueous SM 5210 B Potentiometric Ion CBOD Specific Electrode Aqueous SM 5220 D UV-VIS COD Aqueous SM 5310 C Combustion TOC Aqueous SM 5530A, D UV-VIS Phenolics Aqueous SM4500-CN C, E UV-VIS Cyanide, Total Aqueous/Solid EPA 1110 Corrosivity Corrosivity Aqueous/Solid EPA 120.1 Conductimetric Resistivity Aqueous/Solid EPA 120.1 Conductimetric Conductivity Aqueous/Solid EPA 160.1 Gravimetric TDS Aqueous/Solid EPA 160.3 Gravimetric TS Aqueous/Solid EPA 1664 Gravimetric Oil & Grease (1664) Aqueous/Solid EPA 2540 D Gravimetric TSS Aqueous/Solid EPA 310.1 Titration Alkalinity Aqueous/Solid EPA 330.4 UV-VIS Chlorine (Total) Aqueous/Solid EPA 335.2 UV-VIS Cyanide, Total Aqueous/Solid EPA 350.2 UV-VIS Ammonia Aqueous/Solid EPA 351.3 UV-VIS TKN Aqueous/Solid EPA 353.3 UV-VIS NO3-NO2 (Spec) Aqueous/Solid EPA 6010C ICP Aluminum Aqueous/Solid EPA 6010C ICP Antimony Aqueous/Solid EPA 6010C ICP Arsenic Aqueous/Solid EPA 6010C ICP Barium Aqueous/Solid EPA 6010C ICP Beryllium Aqueous/Solid EPA 6010C ICP Boron Aqueous/Solid EPA 6010C ICP Cadmium Aqueous/Solid EPA 6010C ICP Chromium Aqueous/Solid EPA 6010C ICP Cobalt Aqueous/Solid EPA 6010C ICP Copper Aqueous/Solid EPA 6010C ICP Iron Aqueous/Solid EPA 6010C ICP Lead Aqueous/Solid EPA 6010C ICP Lithium Aqueous/Solid EPA 6010C ICP Manganese Aqueous/Solid EPA 6010C ICP Molybdenum Aqueous/Solid EPA 6010C ICP Nickel Issue 4/14 This supplement is in conjunction with certificate #L14-93 Page 7 of 15

Aqueous/Solid EPA 6010C ICP Phosphorus Aqueous/Solid EPA 6010C ICP Selenium Aqueous/Solid EPA 6010C ICP Silver Aqueous/Solid EPA 6010C ICP Strontium Aqueous/Solid EPA 6010C ICP Thallium Aqueous/Solid EPA 6010C ICP Tin Aqueous/Solid EPA 6010C ICP Titanium Aqueous/Solid EPA 6010C ICP Vanadium Aqueous/Solid EPA 6010C ICP Zinc Aqueous/Solid EPA 7196A UV-VIS Chromium, Hexavalent Aqueous/Solid EPA 8015D GC FID/PID Diesel Aqueous/Solid EPA 8015D GC FID/PID Gasoline Aqueous/Solid EPA 8021B GC FID/PID MTBE Aqueous/Solid EPA 8021B GC FID/PID Benzene Aqueous/Solid EPA 8021B GC FID/PID Ethyl Benzene Aqueous/Solid EPA 8021B GC FID/PID Toluene Aqueous/Solid EPA 8021B GC FID/PID Total Xylene Aqueous/Solid EPA 8081B GC ECD Aldrin Aqueous/Solid EPA 8081B GC ECD alpha-bhc Aqueous/Solid EPA 8081B GC ECD alpha-chlordane Aqueous/Solid EPA 8081B GC ECD beta-bhc Aqueous/Solid EPA 8081B GC ECD delta-bhc Aqueous/Solid EPA 8081B GC ECD Dieldrin Aqueous/Solid EPA 8081B GC ECD Endosulfan I Aqueous/Solid EPA 8081B GC ECD Endosulfan II Aqueous/Solid EPA 8081B GC ECD Endosulfan sulfate Aqueous/Solid EPA 8081B GC ECD Endrin Aqueous/Solid EPA 8081B GC ECD Endrin aldehyde Aqueous/Solid EPA 8081B GC ECD Endrin Ketone Aqueous/Solid EPA 8081B GC ECD gamma-bhc (Lindane) Aqueous/Solid EPA 8081B GC ECD gamma-chlordane Aqueous/Solid EPA 8081B GC ECD Heptachlor Aqueous/Solid EPA 8081B GC ECD Heptachlor Epoxide Aqueous/Solid EPA 8081B GC ECD Methoxychlor Aqueous/Solid EPA 8081B GC ECD 4,4'-DDD Aqueous/Solid EPA 8081B GC ECD 4,4'-DDE Issue 4/14 This supplement is in conjunction with certificate #L14-93 Page 8 of 15

Aqueous/Solid EPA 8081B GC ECD 4,4'-DDT Aqueous/Solid EPA 8081B GC ECD Technical Chlordane Aqueous/Solid EPA 8081B GC ECD Toxaphene Aqueous/Solid EPA 8082A GC ECD Aroclor 1016 Aqueous/Solid EPA 8082A GC ECD Aroclor 1221 Aqueous/Solid EPA 8082A GC ECD Aroclor 1232 Aqueous/Solid EPA 8082A GC ECD Aroclor 1242 Aqueous/Solid EPA 8082A GC ECD Aroclor 1248 Aqueous/Solid EPA 8082A GC ECD Aroclor 1254 Aqueous/Solid EPA 8082A GC ECD Aroclor 1260 Aqueous/Solid EPA 8082A GC ECD Aroclor 1268 Aqueous/Solid EPA 8260C GCMS 1,1,1,2-Tetrachloroethane Aqueous/Solid EPA 8260C GCMS 1,1,1-Trichloroethane Aqueous/Solid EPA 8260C GCMS 1,1,2,2-Tetrachloroethane Aqueous/Solid EPA 8260C GCMS 1,1,2-Trichloroethane Aqueous/Solid EPA 8260C GCMS 1,1-Dichloroethane Aqueous/Solid EPA 8260C GCMS 1,1-Dichloroethene Aqueous/Solid EPA 8260C GCMS 1,1-Dichloropropene Aqueous/Solid EPA 8260C GCMS 1,2,3-Trichlorobenzene Aqueous/Solid EPA 8260C GCMS 1,2,3-Trichloropropane Aqueous/Solid EPA 8260C GCMS 1,2,4-Trichlorobenzene Aqueous/Solid EPA 8260C GCMS 1,2,4-Trimethylbenzene Aqueous/Solid EPA 8260C GCMS 1,2-Dibromo-3-chloropropane Aqueous/Solid EPA 8260C GCMS 1,2-Dibromoethane (EDB) Aqueous/Solid EPA 8260C GCMS 1,2-Dichlorobenzene (ortho) Aqueous/Solid EPA 8260C GCMS 1,2-Dichloroethane (EDC) Aqueous/Solid EPA 8260C GCMS 1,2-Dichloropropane Aqueous/Solid EPA 8260C GCMS 1,3,5-Trimethybenzene Aqueous/Solid EPA 8260C GCMS 1,3-Dichlorobenzene (meta) Aqueous/Solid EPA 8260C GCMS 1,3-Dichloropropane Aqueous/Solid EPA 8260C GCMS 1,4-Dichlorobenzene (para) Aqueous/Solid EPA 8260C GCMS 2,2-Dichloropropane Aqueous/Solid EPA 8260C GCMS 2-Butanone (MEK) Aqueous/Solid EPA 8260C GCMS 2-Chlorethyl vinyl ether Aqueous/Solid EPA 8260C GCMS 2-Chlorotoluene Aqueous/Solid EPA 8260C GCMS 2-Hexanone Issue 4/14 This supplement is in conjunction with certificate #L14-93 Page 9 of 15

Aqueous/Solid EPA 8260C GCMS 4-Chlorotoluene Aqueous/Solid EPA 8260C GCMS 4-Methyl-2-pentanone (MIBK) Aqueous/Solid EPA 8260C GCMS Acetone Aqueous/Solid EPA 8260C GCMS Acetonitrile Aqueous/Solid EPA 8260C GCMS Acrylonitrile Aqueous/Solid EPA 8260C GCMS Benzene Aqueous/Solid EPA 8260C GCMS Bromobenzene Aqueous/Solid EPA 8260C GCMS Bromochloromethane Aqueous/Solid EPA 8260C GCMS Bromodichloromethane Aqueous/Solid EPA 8260C GCMS Bromoform Aqueous/Solid EPA 8260C GCMS Bromomethane (methyl bromide) Aqueous/Solid EPA 8260C GCMS Carbon Disulfide Aqueous/Solid EPA 8260C GCMS Carbon Tetrachloride Aqueous/Solid EPA 8260C GCMS Chlorobenzene Aqueous/Solid EPA 8260C GCMS Chloroethane Aqueous/Solid EPA 8260C GCMS Chloroform Aqueous/Solid EPA 8260C GCMS Chloromethane (methyl chloride) Aqueous/Solid EPA 8260C GCMS cis-1,2-dichloroethane Aqueous/Solid EPA 8260C GCMS cis-1,3-dichloropropene Aqueous/Solid EPA 8260C GCMS Dibromochloromethane Aqueous/Solid EPA 8260C GCMS Dibromoethane (methylene bromide) Aqueous/Solid EPA 8260C GCMS Dichlorodiflouromethane Aqueous/Solid EPA 8260C GCMS Ethylbenzene Aqueous/Solid EPA 8260C GCMS Hexachlorobutadiene Aqueous/Solid EPA 8260C GCMS Idomethane (methyl iodide) Aqueous/Solid EPA 8260C GCMS Isobutyl alcohol Aqueous/Solid EPA 8260C GCMS Isopropylbenzene Aqueous/Solid EPA 8260C GCMS m,p-xylene Aqueous/Solid EPA 8260C GCMS Methylene chloride Aqueous/Solid EPA 8260C GCMS MTBE Aqueous/Solid EPA 8260C GCMS Naphthalene Aqueous/Solid EPA 8260C GCMS n-butylbenzene Aqueous/Solid EPA 8260C GCMS n-propylbenzene Aqueous/Solid EPA 8260C GCMS o-xylene Aqueous/Solid EPA 8260C GCMS p-isopropyltoluene Issue 4/14 This supplement is in conjunction with certificate #L14-93 Page 10 of 15

Aqueous/Solid EPA 8260C GCMS sec-butylbenzene Aqueous/Solid EPA 8260C GCMS Styrene Aqueous/Solid EPA 8260C GCMS tert-butylbenzene Aqueous/Solid EPA 8260C GCMS Tetrachloroethene (PCE) Aqueous/Solid EPA 8260C GCMS Toluene Aqueous/Solid EPA 8260C GCMS trans-1,2-dichloroethene Aqueous/Solid EPA 8260C GCMS trans-1,3-dichloropropene Aqueous/Solid EPA 8260C GCMS trans-1,4-dichloro-2-butene Aqueous/Solid EPA 8260C GCMS Trichlorethene (TCE) Aqueous/Solid EPA 8260C GCMS Trichloroflouromethane Aqueous/Solid EPA 8260C GCMS Vinyl Chloride Aqueous/Solid EPA 8270D GCMS 1,2,4,5-Tetrachlorobenzene Aqueous/Solid EPA 8270D GCMS 1,2,4-Trichlorobenzene Aqueous/Solid EPA 8270D GCMS 1,2-Dichlorobenzene Aqueous/Solid EPA 8270D GCMS 1,3-Dichlorobenzene Aqueous/Solid EPA 8270D GCMS 1,4-Dichlorobenzene Aqueous/Solid EPA 8270D GCMS 1-Chloronaphthalene Aqueous/Solid EPA 8270D GCMS 1-Methylnaphthalene Aqueous/Solid EPA 8270D GCMS 1-Naphthylamine Aqueous/Solid EPA 8270D GCMS 2,3,4,6-Tetrachlorophenol Aqueous/Solid EPA 8270D GCMS 2,4,5-Trichlorophenol Aqueous/Solid EPA 8270D GCMS 2,4,6-Trichlorophenol Aqueous/Solid EPA 8270D GCMS 2,4-Dichlorophenol Aqueous/Solid EPA 8270D GCMS 2,4-Dimethylphenol Aqueous/Solid EPA 8270D GCMS 2,4-Dinitrophenol Aqueous/Solid EPA 8270D GCMS 2,4-Dinitrotoluene Aqueous/Solid EPA 8270D GCMS 2,6-Dichlorophenol Aqueous/Solid EPA 8270D GCMS 2,6-Dinitrotoluene Aqueous/Solid EPA 8270D GCMS 2-Chloronaphthalene Aqueous/Solid EPA 8270D GCMS 2-Chlorophenol Aqueous/Solid EPA 8270D GCMS 2-Methylnaphthalene Aqueous/Solid EPA 8270D GCMS 2-Methylphenol Aqueous/Solid EPA 8270D GCMS 2-Naphthylamine Aqueous/Solid EPA 8270D GCMS 2-Nitroaniline Aqueous/Solid EPA 8270D GCMS 2-Nitrophenol Aqueous/Solid EPA 8270D GCMS 2-Picoline Issue 4/14 This supplement is in conjunction with certificate #L14-93 Page 11 of 15

Aqueous/Solid EPA 8270D GCMS 3,3-Dichlorobenzidine Aqueous/Solid EPA 8270D GCMS 3-Methylcholanthrene Aqueous/Solid EPA 8270D GCMS 3-Methylphenol Aqueous/Solid EPA 8270D GCMS 3-Nitroaniline Aqueous/Solid EPA 8270D GCMS 4,6-Dinitro-2-methylphenol Aqueous/Solid EPA 8270D GCMS 4-Aminobiphenyl Aqueous/Solid EPA 8270D GCMS 4-Bromophenyl-phenylether Aqueous/Solid EPA 8270D GCMS 4-chloro-3-methylphenol Aqueous/Solid EPA 8270D GCMS 4-Chloroaniline Aqueous/Solid EPA 8270D GCMS 4-Chlorophenyl-phenethylether Aqueous/Solid EPA 8270D GCMS 4-Methylphenol Aqueous/Solid EPA 8270D GCMS 4-Nitroaniline Aqueous/Solid EPA 8270D GCMS 4-Nitrophenol Aqueous/Solid EPA 8270D GCMS 7,12-Dimethylbenzo[a]anthracene Aqueous/Solid EPA 8270D GCMS a-,a-dimethylphenethylamine Aqueous/Solid EPA 8270D GCMS Acenaphthene Aqueous/Solid EPA 8270D GCMS Acenaphthylene Aqueous/Solid EPA 8270D GCMS Acetophenone Aqueous/Solid EPA 8270D GCMS Aniline Aqueous/Solid EPA 8270D GCMS Anthracene Aqueous/Solid EPA 8270D GCMS Benzidine Aqueous/Solid EPA 8270D GCMS Benzo[a]anthracene Aqueous/Solid EPA 8270D GCMS Benzo[a]pyrene Aqueous/Solid EPA 8270D GCMS Benzo[b]fluoranthene Aqueous/Solid EPA 8270D GCMS Benzo[g,h,i]perylene Aqueous/Solid EPA 8270D GCMS Benzo[k]fluoranthene Aqueous/Solid EPA 8270D GCMS Benzoic Acid Aqueous/Solid EPA 8270D GCMS Benzyl alcohol Aqueous/Solid EPA 8270D GCMS bis (2-Chloroethyl) ether Aqueous/Solid EPA 8270D GCMS bis (2-Chloroethyoxy) methane Aqueous/Solid EPA 8270D GCMS bis (2-Chloroisopropyl) ether Aqueous/Solid EPA 8270D GCMS bis(2-ethylhexyl)phthalate Aqueous/Solid EPA 8270D GCMS Butylbenzylphthalate Aqueous/Solid EPA 8270D GCMS Chrysene Aqueous/Solid EPA 8270D GCMS Dibenzo(a,j)acridine Aqueous/Solid EPA 8270D GCMS Dibenzo[a,h]anthracene Issue 4/14 This supplement is in conjunction with certificate #L14-93 Page 12 of 15

Aqueous/Solid EPA 8270D GCMS Dibenzofuran Aqueous/Solid EPA 8270D GCMS Diethylphthalate Aqueous/Solid EPA 8270D GCMS Dimethylphthalate Aqueous/Solid EPA 8270D GCMS Di-n-butylphthalate Aqueous/Solid EPA 8270D GCMS Di-n-octylphthalate Aqueous/Solid EPA 8270D GCMS Diphenylamine Aqueous/Solid EPA 8270D GCMS Diphenylhydrazine Aqueous/Solid EPA 8270D GCMS Ethyl methanesulfonate Aqueous/Solid EPA 8270D GCMS Fluoranthene Aqueous/Solid EPA 8270D GCMS Fluorene Aqueous/Solid EPA 8270D GCMS Hexachlorobenzene Aqueous/Solid EPA 8270D GCMS Hexachlorobutadiene Aqueous/Solid EPA 8270D GCMS Hexachlorocyclopentadiene Aqueous/Solid EPA 8270D GCMS Hexachloroethane Aqueous/Solid EPA 8270D GCMS Indeno[1,2,3-cd]pyrene Aqueous/Solid EPA 8270D GCMS Isophorone Aqueous/Solid EPA 8270D GCMS Methyl methanesulfonate Aqueous/Solid EPA 8270D GCMS Naphthalene Aqueous/Solid EPA 8270D GCMS Nitrobenzene Aqueous/Solid EPA 8270D GCMS N-Nitrosodiethylamine Aqueous/Solid EPA 8270D GCMS N-Nitrosodimethylamine Aqueous/Solid EPA 8270D GCMS N-Nitrosodiphenylamine Aqueous/Solid EPA 8270D GCMS N-Nitroso-di-n-butylamine Aqueous/Solid EPA 8270D GCMS N-Nitroso-n-propyl amine Aqueous/Solid EPA 8270D GCMS N-Nitrosopiperidine Aqueous/Solid EPA 8270D GCMS p-dimethylaminoazobenzene Aqueous/Solid EPA 8270D GCMS Pentachlorobenzene Aqueous/Solid EPA 8270D GCMS Pentachloronitrobenzene Aqueous/Solid EPA 8270D GCMS Pentachlorophenol Aqueous/Solid EPA 8270D GCMS Phenacitin Aqueous/Solid EPA 8270D GCMS Phenanthrene Aqueous/Solid EPA 8270D GCMS Phenol Aqueous/Solid EPA 8270D GCMS Pronamide Aqueous/Solid EPA 8270D GCMS Pyrene Aqueous/Solid EPA 8270D GCMS Pyridine Aqueous/Solid EPA 9045D Electrometric ph Issue 4/14 This supplement is in conjunction with certificate #L14-93 Page 13 of 15

Aqueous/Solid EPA 9056 IC Bromide Aqueous/Solid EPA 9056 IC Chloride Aqueous/Solid EPA 9056 IC Fluoride Aqueous/Solid EPA 9056 IC Nitrate as N Aqueous/Solid EPA 9056 IC Nitrite as N Aqueous/Solid EPA 9056 IC Sulfate Aqueous/Solid SM 2320 B Titration Alkalinity Aqueous/Solid SM 2510B Conductimetric Conductivity Aqueous/Solid SM 2540 B Gravimetric TS Aqueous/Solid SM 2540 C Gravimetric TDS Aqueous/Solid SM 3500-Cr B UV-VIS Chromium, Hexavalent Aqueous/Solid SM 4500 NH3 C UV-VIS TKN Aqueous/Solid SM 4500-Cl B Titrimetric Chloride (Titrimetric) Aqueous/Solid SM 4500-Cl F UV-VIS Chlorine (Total) Aqueous/Solid SM 4500-NH3 B,C UV-VIS Ammonia Aqueous/Solid SM 4500-NO3 E UV-VIS NO3-NO2 (Spec) Aqueous/Solid SM 4500-S2- D UV-VIS Sulfide Aqueous/Solid SM 5540 C UV-VIS Surfactants Aqueous/Solid TX1005 GC PID Carbon Range C6-C12 Aqueous/Solid TX1005 GC PID Carbon Range >C12-C28 Solid ASTM D 2216 Gravimetric % Moisture Solid EPA 7471B CVAA Mercury Solid EPA 9056 IC Phosphate Aqueous EPA 1010 Flashpoint Flashpoint Issue 4/14 This supplement is in conjunction with certificate #L14-93 Page 14 of 15

Aqueous EPA 1664 Gravimetric Extraction for Oil and Grease Aqueous EPA 3005A Acid Digestion Metals Prep Aqueous EPA 3010A Acid Digestion Metals Prep Aqueous EPA 3510C Separatory Funnel Organic Extraction Liquid-Liquid Extraction Aqueous EPA 5030C Purge & Trap Voc Organics Aqueous/Solid EPA 1311 TCLP (Toxicity Extraction Prep Characteristic Leaching Procedure Aqueous/Solid EPA 1312 Synthetic Extraction Prep Precipitation Leaching Procedure Aqueous/Solid EPA 3050B Acid Digestion Metals Prep Aqueous/Solid EPA 3550B Ultrasonic Extraction Organic Extraction Aqueous/Solid EPA 3580A Waste Dilution Organic Extraction Aqueous/Solid EPA 3620 Adsorption Florisil Cleanup Aqueous/Solid EPA 3665A Oxidation/Reduction Sulfuric Acid Cleanup Solid EPA 5035 Purge & Trap Voc Organics Issue 4/14 This supplement is in conjunction with certificate #L14-93 Page 15 of 15