Produced Water

SECTION 2: Hazards identification

HMIS Hazard Rating: * *

2.1 Classification of the substance or mixture

Eye Irritant — Category 2A. Flammable Liquids — Category 2. Acute Toxicity Inhalation — Category 3 Germ Cell Mutagenicity — Category 1B Carcinogenicity — Category 1A Specific Target Organ Systemic Toxicity (STOT) — Single Exposure Category 3 Specific Target Organ Systemic Toxicity (STOT) — Repeat Exposure Category 1 Aspiration Toxicity — Category 1 Toxic to the Aquatic Environment Acute — Category 3

Signal word

Warning Danger Page 1 of 17

Hazard statements

Causes serious eye irritation Highly flammable liquid and vapor. Toxic if inhaled. May cause genetic defects. May cause cancer. May cause respiratory irritation. May cause drowsiness or dizziness. May cause damage to organs (liver, kidneys, blood, nervous system, and skin) through prolonged or repeated exposure. May be fatal if swallowed and enters airways. Harmful to aquatic life.

Prevention

Wear protective gloves/protective clothing/eye protection/face protection. Keep away from heat/sparks/open flames/hot surfaces. No smoking. Keep container tightly closed. Ground/bond container and receiving equipment. Use explosion-proof electrical/ventilating/lighting equipment. Use only non-sparking tools. Take precautionary measures against static discharge. Wear protective gloves/protective clothing/eye protection/face protection. Do not breathe gas/mist/vapors/spray. Do not handle until all safety precautions have been read and understood. Wash thoroughly after handling. Do not eat, drink or smoke when using this product. Use only outdoors or in a well-ventilated area. Avoid release to the environment.

Response

If on SKIN (or hair): Rinse skin with water / shower. Remove / Take off all contaminated clothing immediately. Page 1 of 11 Ifin EYES: Rinse cautiously with water for at least fifteen (15) minutes. Remove Contact Lenses, if present and easy to do. Continue rinsing. If EYE irritation persists, get medical advice / attention. If on SKIN (or hair): Wash with plenty of soap and water. Remove / Take off all contaminated clothing immediately. Rinse skin with water/shower. If INHALED: Remove victim to fresh air and keep comfortable for breathing. Calla poison center/doctor if the victim feels unwell. If SWALLOWED: Immediately call a poison center or doctor / physician. Do not Induce vomiting. If exposed or concerned: Get medical advice/attention. In case of fire: Use water spray, fog or fire-fighting foam.

Storage

Store in a secure area. Procedures Keep container(s) tightly closed and properly labeled. Use and store this material in cool, dry, well ventilated areas. Store only in approved containers. Keep away from any incompatible material (see Section 10). Protect container(s) against physical damage. Incompatibilities Keep away from excessive heat to prevent rupture of container. *** Section 8— EXPOSURE CONTROLS / PERSONAL PROTECTION * * * Component Exposure Limits Water (7732-18-5) ACGIH: Not listed Sodium Chloride (7647-14-5) ACGIH: Not listed Engineering Measures If current ventilation practices are not adequate to maintain airborne concentrations below the established exposure limits, additional engineering controls may be required. Personal Protective Equipment: Respiratory Emergencies or conditions that could result in significant airborne exposures may require the use of NIOSH approved respiratory protection. An industrial hygienist or other appropriate health and safety professional should be consulted for specific guidance under these situations. A respiratory protection program that meets or is equivalent to Store in a well-ventilated place. Keep cool. Store in a secure area. Page 2 of 17

Disposal

Dispose of contents/containers in accordance with regulations. ** * Section 3 - COMPOSITION / INFORMATION ON INGREDIENTS * * * CAS # Component Percent 7732-18-5 Water 80 7647-14-5 Sodium Chloride 20 Because brine water is a natural product, composition can vary greatly. *** Section 4— FIRST AID MEASURES * * * First Aid: Eyes Flush eyes with clean running water for at least fifteen (15) minutes. If irritation or redness develops from exposure, following flushing, seek medical attention. First Aid: Skin First aid is not required, normally. However, it is a good practice to wash any chemical from the skin. First Aid: Ingestion (Swallowing) First aid is not required, normally. If soontaneous vomiting occurs, lean the victim forward to reduce the risk of aspiration. Monitor for breathing difficulties. If symptoms develop, seek medical attention. First Aid: Inhalation (Breathing) Remove person to fresh air. If person is not breathing, provide artificial respiration. If necessary, provide additional oxygen once breathing is restored if trained to do so. Seek medical attention immediately. Page 2 of 11 Most important symptoms and effects None known or anticipated. *** Section 5 — FIRE FIGHTING MEASURES * * * Dispose of contents/containers in accordance with local/regional/national/international regulations.

Appearance/Odor

Clear to Brown Salty Physical State: Liquid pH: ND Vapor Pressure: < 0.36 psia @ 70°F / Vapor Density: > 1 21.1°C Boiling Point: 212°F / 100°C Melting Point: 2.4°F / -16.5°C Solubility (H2O): Complete Specific Gravity: 1.1 @ 68°F / 20°C Evaporation Rate: Variable voc: ND Octanol / H20 ND Flash Point: ND Coeff.: Flash Point ND Method: Lower Flammability ND Upper Flammability Limit: Limit: (LFL): (UFL): Auto Ignition: ND Burning Rate: ND Page 6 of 11 ** * Section 10 — CHEMICAL STABILITY & REACTIVITY INFORMATION * * * Chemical Stability This is a stable material. Hazardous Reaction Potential Will react with alkali and alkaline metals to form flammable hydrogen gas. Conditions to Avoid Avoid contact with alkali metals (lithium, sodium, potassium), alkaline metals (beryllium, magnesium, calcium, strontium, and barium), and metallic hydrides like lithium aluminum hydride. Hazardous Decomposition Products Not anticipated under normal conditions of use. Hazardous Polymerization Not Known to occur.

TOXICOLOGICAL INFORMATION

Acute Toxicity A: General Product Information Unlikely to be harmful. B. Component Analysis — D50/LC50 Water (7732-18-5) Oral LD50 Rat 90 g/kg Sodium Chloride (7647-14-5) Oral LD50 Rat 3 g/kg

Potential health effects

Skin Corrosion Property / Stimulativeness May cause skin irritation with prolonged or repeated contact. Not expected to be a skin sensitizer. Eye Critical Damage / Stimulativeness Contact with eyes may cause moderate irritation. Page 7 of 11 Ingestion Ingestion may result in nausea, vomiting, diarrhea, abdominal cramps, and dehydration (thirst). Inhalation No information available on the mixture. However, none of the components have been classified for respiratory sensitization (or are below the concentration threshold for classification). Generative Cell Mutagenicity Not expected to cause genetic effects. Carcinogenicity General Product Information Not expected to cause cancer. This substance is not listed as a carcinogen by IARC NTP or

ECOLOGICAL INFORMATION

Ecotoxicity A: General Product Information Keep out of sewers, drainage areas, and waterways. Report spills and releases, as applicable under Federal and State regulations. Page 8 of 11 Persistence / Degradability No information available Bioaccumulation No information available Mobility in Soil No information available *** Section 13 — DISPOSAL CONSIDERATIONS * * * Waste Disposal Instructions See Section 7 for Handling Procedures. See Section 8 for Personal Protective Equipment Recommendations. Disposal of Contaminated Containers or Packaging Recover or recycle if possible. It is the responsibility of the generator to determine the toxicity and physical properties of the material generated so as to properly classify the waste and ensure disposal methods comply with applicable regulations. This material, if discarded as produced, is not a RCRA "listed" hazardous waste, and is not believed to exhibit characteristics of hazardous waste. Consult state and local regulations regarding the proper disposal of this material. Do not dispose of brine water by draining onto the ground. This will result in soil and groundwater contamination. Waste arising from spillage or tank cleaning should be disposed of in accordance with applicable regulations. Container contents should be completely used and containers should be emptied prior to discard. Container rinsate should not be considered a RCRA hazardous waste but must be disposed of with care and in full compliance with federal, state and local regulations. Larger empty containers, such as drums, should be returned to the distributor or to a qualified drum reconditioner. To assure proper disposal of smaller empty containers, consult with state and local regulations and disposal authorities. *** Section 14— TRANSPORTATION INFORMATION * * * DOT Information Shipping Description: Not Regulated UN #: Not Regulated Page 9 of 11 *** Section 15 — REGULATORY INFORMATION * * * CERCLA/SARA - Section 302 Extremely Hazardous Substances and TPQs (in pounds): This material does not contain any chemicals subject to the reporting requirements of SARA 302 and 40 CFR 372, CERCLA/SARA - Section 313 and 40 CFR 372): This material does not contain any chemicals subject to the reporting requirements of SARA 313 and 40 CFR 372. EPA

Further information

NFPA® Hazard Rating Health 1 Fire 0 ReactivityO HMIS® Hazard Rating Health 1 = Slight Fire O Minimal Physical 0 Minimal Page 10 of 11 Key/Legend EPA = Environmental Protection Agency; TSCA = Toxic Substance Control Act: ACGIH = American Conference of Governmental Industrial Hygienists; IARC = International Agency for Research on Cancer; NIOSH = National Institute for Occupational Safety and Health; NTP = National Toxicology Program; The information presented herein has been compiled from sources considered to be dependable, and is accurate and reliable to the best of our Knowledge and belief, but is not guaranteed to be so. Since conditions of use are beyond our control, we make no warranties, expressed or implied, except those that may be contained in our written contract of sale or acknowledgment. Vendor assumes no responsibility for injury to vendee or third persons proximately caused by the material if reasonable safety procedures are not adhered to as stipulated in the data sheet. Additionally, vendor assumes no responsibility for injury to vendee or third persons proximately caused by abnormal use of the material, even if reasonable safety procedures are followed. Furthermore, vendee assumes the risk in their use of the material. Date of preparation January 28, 2014 Date of Last Revision: March 4, 2014 End of Sheet Page 11 of 11 thy Drips; Condensate; Field Condensate; Gas Well Condensate; High Pressure Inlet Liquids; Lease Condensate; Natural Gas Liquids; Pipeline Liquids ** * Section 1— PRODUCT AND COMPANY IDENTIFICATION * * * PRODUCTNAME: Natural Gas Condensate EMERGENCY PHONE: (800) 878-1373 PRODUCTCODES: 64741-47-5 AFTER HOURS: (800) 878-1373 PRopucER: Antero Resources ApprEss: 1615 Wynkoop Street CHEMTREC PHONE: (800) 424-9300 Denver, Colorado 80202 * * *

2.2 Label elements

oO OD