Lynas Advanced Materials Plant Key data from Operations to September 2016

RADIATION SAFETY MONITORING PROGRAM There are 4 types of radiation monitoring activities at the LAMP Lynas Monitoring Activities Occupational Exposure Monitoring Program Environmental Radiation Monitoring Program Continuous Aerosol Monitoring System (AMS) Regulatory Monitoring AELB Monitoring – carried out by the AELB

NO radiological impact to public Work Section Off-site of LAMP Critical Group External Radiation (mSv/year) 222Rn (mSv/year) 220Rn (mSv/year) Dust (mSv/year) Total Dose (mSv/year) 1 km workers working at adjacent plants Equals background <0.007 <0.0033 5 km Public <0.0072 10 km Equal s background 20 km Internal doses from inhalation of dust are calculated in accordance to NORM-5 guideline (DMP, 2010) as follows: Internal dose (dust), mSv/year = AM x t x BR x DCF    Where, AM is arithmetic mean of gross α-activity concentration (Bq/m3); t is number of exposure hours (hour); BR is default breathing rate of 1.2 m3/hour; and DCF is the dose conversion factor of 0.0075 mSv/Bqα, for the WLP dust with Th:U ratio of 25:1, 0.0075 mSv/Bqα for the LC dust with Th:U ratio of 20:1 and an AMAD of 5 µm (Table D.9 in Appendix D of DMP, 2010) for radiation workers, and an AMAD of 1 µm for members of the public (Table D.1 in Appendix D of DMP, 2010). The default Activity Mean Aerodynamic Diameter (AMAD) is in line with ICRP-66 recommendation. 2. Internal doses assessment from inhalation of radon and thoron are calculated in accordance to the NORM-5 guideline issued by the West Australian Department of Mines and Petroleum in 2010 (DMP, 2010) as follows: ERn (Radon), mSv/year = EECRn x fRn x T ETn (Thoron), mSv/year = EECTn x fTn x T ERn and ETn are exposures from inhalation of radon progeny and thoron progeny, respectively (mSv/year); EECRn = Equilibrium Equivalent Concentration of Radon; EECTn = Equilibrium Equivalent Concentration of Thoron; T is the exposure time (hour); fRn is the conversion factors for radon progeny, 9 nSv/(Bq.h.m-3); and fTn is the conversion factor for thoron progeny 40 nSv/(Bq.h.m-3). Permissible Limit for public = 1 mSv per year; Permissible Limit for radiation workers = 20 mSv per year NOTE: Dose is an overestimate, MDL values were used for values less than MDL in calculating doses

NO change in External Dose Rates since LAMP started operation

NO CHANGE in Radon-Thoron levels since LAMP started operation LAMP Starts operation

Surface Water Monitoring Program: Types and Parameters Carried out by: Accredited 3rd party Environmental Consultant’s reported Type Parameters In-situ Measurement pH, Temperature, Dissolved Oxygen (DO), Conductivity Physical Biological Oxygen Demand (BOD5), Chemical Oxygen Demand (COD), Suspended Solids (SS), Total Dissolved Solids (TDS) Inorganics Cyanide, Free chlorine, Sulfide, Oil & grease, Ammoniacal nitrogen (AN), Calcium, Carbonate, Phosphate. Metals Arsenic, Mercury, Cadmium, Chromium, Copper, Iron, Lead, Manganese, Nickel, Tin, Zinc Microbiological Total coliform

Monitoring Stations for water sampling

Effluent TSS measured over time at the point of discharged from the LAMP: Levels LOWER than the permissible limit (Std B Water Quality)

Effluent COD measured over time at the point of discharged from the LAMP: Levels LOWER than the permissible limit (Std B Water Quality)

Iron concentrations in effluent measured over time at the point of discharged from the LAMP: Levels LOWER than the permissible limit (Std B Water Quality)

Manganese concentrations in effluent measured at the point of discharged from the LAMP: Levels LOWER than the permissible limit (Std B Water Quality)

Discharge water quality: Quality of the final discharge is WELL BELOW LIMIT of the Standard B Water quality Upstream and Downstream: a. WELL WITHIN Class II and Class III of NIQWSM Heavy metals and other metals were UNDETECTED OR FOUND IN TRACE LEVELS The Inland waters including river systems are classified into five classes based on the National Interim Water Quality Standards for Malaysia (NIWQSM). The classes of the NIWQSM are as follows:   Class I : Conservation of natural water supply- practically no treatment necessary Class IIA: Conventional treatment required Class IIB: Recreational use with body contact. Class III: Extensive treatment required Class IV: Irrigation Class V: None of the above The discharge of treated industrial wastewater or effluent is governed under the Environmental Quality (Industrial Effluent) Regulations, 2009. These regulations specify two separate discharge standards (for 30 parameters) which are as follows: Standard A: A set of more stringent limits applicable to discharges arising within water supply catchment areas; Standard B: A set of less stringent limits applicable to other inland waters (outside of catchment areas) or any part of the sea abutting the foreshore and other body of natural or artificial or subsurface water. Water quality Upstream: Parameters namely for pH, DO, BOD, TSS and AN were well within the Class II and Class III of NIWQSM during both Low and High Tides from January to March 2013. Heavy metals (mercury, cadmium, lead) and other metals were undetected or found in trace concentrations in the upstream sample For the water quality downstream:  Parameters including pH, DO, BOD, COD, TSS and AN fall within the Class II and Class III of NIWQSM during both Low and High Tides from January to March 2013. Heavy metals (mercury, cadmium, lead) and other metals were undetected or found in trace concentrations in the upstream sample.