environmental design criteria

Design Criteria for Environmental 25713-220-3DR-H01-00001-002

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Use of this deliverable is subject to restrictions set forth in the contract Page 2 of 38

TABLE OF CONTENTS

SECTION DESCRIPTION PAGE

1.0 SCOPE 4

2.0 GENERAL 6

2.1 Introduction 6

2.2 Source codes to be used 8

2.3 Applicable regulations 8

2.4 Guideline documents 10

3.0 EFFLUENT AND EMISION CONTROL CRITERIA 10

3.1 Air emissions 11

3.2 Noise 14

3.3 Vibration 14

3.4 Liquid emissions 14

3.5 Water 15

3.6 Erosion and sedimentation control 16

3.7 Ponds 16

3.8 Curb and containment 17

3.9 Wastes 17

3.10 Hazardous toxic materials 18

3.11 Building and energy 19

3.12 Services 20

3.13 Archaeology 21

3.14 Flora and threatened species 21

4.0 ENVIRONMENTAL PARAMETERS OF THE BASELINE 21

4.1 Physical parameters 21

5.0 GENERAL REGULATIONS 22

5.1 Air standards 22

5.2 Noise standards 23





SECTION DESCRIPTION PAGE

5.3 Water standards 28

5.4 Vibration standards 31

5.5 Ozone 31

5.6 Liquid fuel 38

6.0 REFERENCES 38





1.0 SCOPE

Provide environmental criteria to be used in the Organic Growth Project 1 (OGP1) Execution Phase to be developed by Minera Escondida Limitada (MEL) in the Antofagastas Region, Republic of Chile.

The major facilities of OGP1 Project WBS, on which, compliance with this criterion must be met and assessed are:

FACILITY CODE

FACILITY DESCRIPTION

0000

Escondida Phase IV Modifications (Existing Facilities)

0200 Ore Material Handling (O/L Conveying System)

0220 Coarse Ore Transport

0230 Coarse Ore Stockpile

0300 Concentrator

0310 Grinding Control Room and Offices 0360 Reagent Distribution Modifications 0800 Infrastructure & Yard Utilities

0820 Change House & First And Facility

1000 OGP1 Concentrator (New Facilities) 1200 Ore Material Handling 1220 Coarse Ore Transport From Escondida

and Escondida Norte 1230 Ore Stockpile

1240 Coarse Ore Reclaim

1300 Concentrator

1310 SAG and Ball Mills

1320 Flotation and Regrind 1330 Pebble Crushing 1340 Concentrate Thickening

1350 Tailings Thickening





FACILITY CODE


1360 Reagents 1370 Lime Plant and Distribution

1390 Plant Air

1400 Concentrate Pumping and Transport 1410 Concentrate Holding Tanks 1420 Concentrate Pump Station 1600 Tailings 1610 Tailings Pipeline 1620 Tailings Impoundment & Distribution 1630 Tailings Water Recovery 1690 Dam Drainage Collection System 1700 Infrastructure & Yard Utilities 1710 Site Access Roads 1720 Water Distribution System 1730 Sanitary Sewer System 1740 Power Distribution System 1741 Main Electrical Substation OGP1 1742 Yard Electrical Distribution 1750 Fire Protection and Detection Systems

2000

Camp & Buildings 2300 Construction Camp 2400 Warehouse

2500 Main Gatehouse

4000

Power Supply 4500 69 kV Other Substations

5000

Los Colorados Facility Replacement 5300 Water Storage & Distribution System 5400 Power Substation & Distribution System





FACILITY CODE


5500 Other Infrastructure & Building

2.0 GENERAL

2.1 Introduction

The Escondida mine is located in the Atacama Desert in northern Chile, at an altitude of 3 200 meters above sea level (masl).

The mine site is located approximately 180 kilometers by road southeast of the port of Antofagasta an it is accessible from Antofagasta via a branch of the Pan American Highway and MELs access road.

The Execution Phase includes a new concentrator referred to as the Organic Growth Project 1 (OGP1) to replace the existing Los Colorados (LC) concentrator, located at the Escondida site.

The new OGP1 copper concentrator will be constructed south and adjacent to the existing Laguna Seca concentrator; it will have a nominal capacity of 152 000 tons per day and all of the supporting facilities will be designed for this out put.

It is worthy to mention that this technical report has been developed in accordance with the standards, sustainable development concepts and proper resource management, that are set forth in the Expansion of extraction capacity and processing of sulfurous ore of Minera Escondida Environmental Impact Study (E.I.A. as per Spanish acronym). This was published in Chiles Official Newspaper and the daily newspaper La Nacin on October 17, 2008 and it was approved by the Environmental Qualification Resolution N 0398 (R.C.A. as per Spanish acronym) on November 17, 2009. The OGP1 Project is part of the E.I.A. mentioned above.

This design criteria establishes the environmental requirements for Execution Phase of the OGP1.

The basic documents that support this Environmental Design Criteria are:

Environmental Impact Study Expansion of extraction capacity and processing of sulfurous ore of Minera Escondida, submitted to the Regional Environmental Commission (COREMA as per Spanish acronym) of Antofagasta, on October 6, 2008 and published in the Official Newspaper and the daily newspaper La Nacin on October 17, 2008.

Addendum 1 to the above E.I.A., as of February 20, 2009. Addendum 2 to the above E.I.A., as of June 4, 2009. Addendum 3 to the above E.I.A., as of August 4, 2009.





Consolidated Assessment Report (ICE as per Spanish acronym) of the project Expansion of extraction capacity and processing of sulfured ore of Minera Escondida, submitted to Minera Escondida Limitada, on November 4, 2009.

Environmental Resolution Qualification N0398/2009 as of November 17, 2009, qualifying environmentally the E.I.A. submitted.

Environmental Impact Statement (D.I.A. as per Spanish acronym)Expansion of Minera Escondidas Electric Transmission System, November 27, 2008 (D.I.A. 1).

Addendum 1 to the above D.I.A. 1, as of January 30, 2009. Environmental Resolution Qualification N0127/2009 as of March 27, 2009, qualifying

environmentally the D.I.A 1, submitted. Environmental Impact Statement Potable Water Plant, Sewage Water Treatment Plant and

New MEL Camp Site, April 18, 2011 (D.I.A. 2). Addendum 1 to the above D.I.A. 2, as of June 29, 2011. Addendum 2 to the above D.I.A. 2, as of August 22, 2011. Consolidated Assessment Report of the Environmental Impact Study of the Environmental

Impact Statement for Potable Water Plant, Waste Water Treatment Plant and New Camp Site of Minera Escondida submitted to Minera Escondida Limitada, on September 21, 2011.

Environmental Resolution Qualification N0170/2011 as of October 3, 2011, qualifying environmentally the D.I.A. 2 submitted.

Environmental Impact Statement Optimization location of facilities in Minera Escondida, September 29, 2011 (D.I.A. 3).

Addendum 1 to the above D.I.A. 3, as of January 20, 2012. Addendum 2 A to the above D.I.A. 3, as of March 22, 2012. Consolidated Assessment Report of the Environmental Impact Study of the Environmental

Impact Statement for Optimization location of facilities in Minera Escondida submitted to Minera Escondida Limitada, on April 17, 2012.

Environmental Resolution Qualification N0103/2012 as of April 27, 2012, qualifying. environmentally the D.I.A. submitted.

Chilean laws. Environmental Policy of Bechtel. Environmental Policy of MEL/BHP Billiton. GLD. 009 Environmental, BHP Billiton, 16 March, 2010.

2

2

2





Environmental good practices. Information of the project area.

2.2 Source codes to be used

Letter codes located at the margin of each criterion indicate its source. More than one code can be added to the specification, which shall be placed next to the first one.

Code Description A Criteria provided by MEL

B Standard industry practice

C Bechtel recommendation

D Criterion provided by the supplier

E Criterion resulting from process calculations F Data from engineering manuals

G Assumptions

H Criterion delivered by the Technology Supplier I Criterion resulting from E.I.A., D.I.A., and their approval dossiers J Laws and regulations

2.3 Applicable regulations

The following Chilean laws, standards and regulations are used:

1. Mining Safety Regulations, SD N 132/2004 (DS as per Spanish acronym) up date, Mining Ministry.

2. Regulation on Basic Sanitary and Environmental Conditions in the Workplace, SD N 594/1999, amended by SD N 57/2003, SD N 201/2001, SD N 556/2000 and SD N97/2011, Health Ministry.

3. Aggravating Noise Emission Standard for Fixed Sources, SD N 146/1997, Ministry of the General Secretary of the Presidency.

4. Standard establishing the Emission of Liquid Wastes to Underground Waters, SD N46/2003, Ministry of the General Secretary of the Presidency.





5. Standard that establishes the Emission norm of contaminants regulation associated to liquid residuals being discharged, to marine water in a continental superficial SD N90/2001, Ministry of the General Secretary of the Presidency.

6. Chilean Norm, NCh 409/1 (NCh as per Spanish acronym) Of.2005, Potable Water - Part 1 Requirements.

7. Regulation of Hazardous Substances Storage, SD N78/2010, Health Ministry. 8. Health Regulation on Hazardous Waste Management, SD N 148/2003, Health Ministry. 9. Exempt Resolution N 610/1982 Prohibition of use of Polychlorinated Biphenyls (PCBs),

Superintendency of Electricity and Fuels. 10. Emission Standard for the Regulation of the Luminous Pollution, SD N 686/1998, Ministry

of Economy, Development and Reconstruction. 11. Law establishing control mechanisms for Ozone Layer Depleting Substances, Law

20096/2006, Ministry of the General Secretary of the Presidency. 12. Safety Regulations for Facilities and Operations of Production and Refining, Transportation,

Storage, Distribution and Supply of Liquid Fuel, SD N160/2009, Ministry of Economy, Development and Reconstruction.

13. Regulation for Management of Mud generated by Waste Water Treatment Plants, SD N4/2009, Ministry of the General Secretary of the Presidency.

14. Chilean Norm, NCh 1333/1978 amended by SD N105/1987 Water Quality Requirements for different uses.

15. Species Classification Reglament, SD N75/2005, Ministry of the General Secretary of the Presidency.

16. First Species Classification based on their Conservation State, SD N 151/2007, Ministry of the General Secretary of the Presidency.

17. Second Species Classification based on their Conservation State, SD N 50/2008, Ministry of the General Secretary of the Presidency.

18. Third species Classification based on their Conservation State, SD N 51/2008, Ministry of the General Secretary of the Presidency.

19. Fourth Species Classification based on their Conservation State, SD N 23/2009, Ministry of the General Secretary of the Presidency.





2.4 Guideline documents

1. Base Metals Guide, GP022: HSEC en el diseo, BHP Billiton. 2. National Fire Protection Association, NFPA. 3. American Petroleum Institute, API. 4. Environmental Protection Agency, EPA. 5. United States Bureau of Mines, USBM. 6. Conveyor Equipment Manufacturer Association, CEMA. 7. Deutches Institut fr Normung, DIN. 8. American National Standard Institute, ANSI.

3.0 EFFLUENT AND EMISSION CONTROL CRITERIA These criteria will guide the engineer and designer to become familiar with the Chilean laws, decrees and standards in order to design and construct the project facilities, complying with environmental commitments and standards in force in the Republic of Chile.

Design values used in the project are defined as they are in the process criterion. Thus the following is obtained:

a) Nominal capacity: This is the plant name plate throughput value; in this case the nominal plant capacity is 152 000 tonnes per day represents the yearly average throughput considering the respective availability and utilization. This value has been defined by M.E.L.

b) Design Value: The criteria values are the instantaneous process criterion values that take account of flows that operate for less than 24 hours during one operating day, or where it is intended that the particular equipment will have an additional capacity to allow for maintenance, catch-up capability or for variability in process parameters. The Design values are intended as attainable continuous rates and do not include any additional design allowance(s), by engineer or vendor, to ensure attainment. The combinations of Design values neither relate to the annual productions defined nor integrate to represent a metallurgical balance. The Design values are individual rates used for sizing equipment.





Specifications Code

3.1 Air emissions

3.1.1 Dust suppression or collection systems shall be installed in transfer points that may result in particulate matter emissions (SD N 132/2002).

J

3.1.2 Dust collection ductwork shall be designed in such a way that the up flow can not be less than 65 from the horizontal while the down flow can not be less than 45 from the horizontal.

B

3.1.3 For the dust control equipment design consider, as minimum, the following efficiencies:

i) bagfilters: 95% ii) dust supressors:75% iii) isokinetic filters: 98%

F H

3.1.4 Particulate point sources, including but not limited to materials handling, transfers and storage, laboratory vents, and processes controlled by baghouse or scrubber, shall not exceed an exhaust concentration of 32 mg/m3 (EPA).

J

3.1.5 All the belts, in the transfer points, shall be sealed with rubber guards in order to avoid generating fugitive dust.

B

3.1.6 All the belts, at their discharge point, shall have a scraping system in order to avoid overflow of material in the return line. Such scrapers shall be located so as the material falls inside the transfer chute.

B

3.1.7 Seals shall be installed upstream and downstream of the transfer point. B

3.1.8 The length of the upstream seals shall be around 3 to 5 times the width of the belt.

B

3.1.9 The length of the downstream seals shall be around 4 to 7 times the width of the belt.

B

3.1.10 The transport belt of dry mineral will be encapsulated or protected with a semicircle lid in the areas out of closed buildings.

B

3.1.11 In the loading system of the belt conveyors all transfers to the belts must be centered and unloaded proportionate to the edges of the receiving conveyor belt to prevent spillage, according to CEMA or DIN standards; the feeding and transfer system of the belt conveyors must ensure that load is centered on the belt.

B

3.1.12 All dry ore transfer chutes shall be enclosed and have a dust control system (suppression or collection system).

B

3.1.13 Belts transporting dry ore and located in open spaces shall be closed, encapsulated or covered in the predominant direction of the wind.

B

3.1.14 Belt enclosure shall have no perforations, holes or deficiencies. B

3.1.15 Lime shall not be mixed with Xanthate, as it may produce H2S. F

3.1.16 Lime shall be stored in silos. B





Specifications Code 3.1.17 The lime plant must have a dust collector. B F

3.1.18 An emission control system (scrubber) shall be installed in the reagent preparation area (Xanthate), located outside the collective flotation plant.

F

3.1.19 Fire suppression systems must be free of hazardous agents for the ozone layer, such as, see in Tables 5.12 to 5.20 (Law 20096/2006).

J

3.1.20 General fire extinguishing systems may be fixed, mobile, portable or a combination of the three (NFPA).

B J

3.1.21 In case of existing sprays, fumes, gases or vapors that may be harmful to the health of workers, localized control systems must be implemented to prevent their spread, see in Table 5.1 (SD N 594/1999).

J

3.1.22 The sources of fugitive particulate, including roads, should not exceed ten percent (10%) opacity excluding the points for blasting and primary crusher truck discharge box.

B

3.1.23 In all underground areas, a circulation of clean and fresh air shall be kept in the quantity and quality necessary according to the number of persons, the total power of the equipment having internal combustion as well as to dilute gases in such away as to have a minimum of 19.5% of oxygen in the working environment (SD N 132/2004).

J

3.1.24 Work places must be designed so as each worker is provided with a volume of 10 cubic meters, as a minimum, except if a proper air renewal system that operates by mechanical means is in place. In such a cases, they shall receive fresh and clean air at a ratio of 20 cubic meters per hour and per person, or such a quantity ensuring 6 renewals of the air volume of the premises per hour, as a minimum, reaching up to 60 renewals per hour according to the existing environmental conditions, or as per the magnitude of the contaminant concentration. The most restrictive situation shall be considered (SD 594/1999).

J

3.1.25 If in a work environment there are two or more substances listed in Table 5.1 and act on the human body in a similar way, their combined effect is evaluated by adding the fractions of each environmental concentration divided by their corresponding weighted permissible limit, not allowing this addition to exceed 1 (one). If the action of each of these substances were independent from the others or when acting on different organs shall be evaluated independently regarding their weighted permissible limit (SD N 594/1999).

J

3.1.26 When natural ventilation is not enough, mechanical ventilation shall be used, installing main, secondary or ancillary ventilation fans, as needed (SD N 132/2004).

J

3.1.27 In developing access roads which use auxiliary ventilation, the end of the pipe shall be not more than thirty meters (30m) from the front.

J





Specifications Code 3.1.28 For distances greater than 30 m should be used blowers, venturi or additional

fans, both to get the air duct to the front to bring the gas and dust into the duct system.

J

3.1.29 Ancillary ventilation ducts will be made of resistant material according to the features of the place and activities being carried out, (ANSI/ ASHRAE).

J

3.1.30 Ancillary ventilation fans shall be equipped with devices allowing reversing the air current, (ANSI/ ASHRAE).

J

3.1.31 The design of industrial buildings, tunnels, underground facilities, etc. should consider the weighted permissible limits (L.P.P. as per Spanish acronym) for concentrations of chemicals present on the environment, considering exposure of a worker for a day of 48 hours per week corresponds to:

Contaminant W.P.L.(1) (2) (5) (6)

mg/m3 Unclassified dust (breathable fraction) 1.61 (4) Unclassified dust (total) 5.36 (3) Silica crystallized (quartz) 0.05 Sulfuric acid 0.54 Quicklime 1.07

(1) Weighted Permissible Limit (WPL): maximum value for the weighted average ambient

concentrations of chemical pollutants existing in the workplace during normal 8-hour day with a total of 48 hours per week.

(2) Values WPL have been corrected considering the site altitude (3 200 m.a.s.l.). It was

considered that the day the worker does not exceed 48 hours per week (if this amount of hours is exceed, then these values should be corrected considering this concept).

(3) Total dust free asbestos and less than 1% free crystalline silica.

(4) Breathable fraction.

(5) The weighted average ambient concentrations of chemical contaminants above shall not

exceed the weighted permissible limits (WPL) established previously. May momentarily exceed these limits, but in no case exceed 5 (five) times its value. Both the excess of allowable limits weighted not be repeated more than four times in the workday, or more than once in an hour.

(6) Where the work environment there are two or more substances previously indicated, and

act on the human body the same way, their combined effect is evaluated by summing the fractions of each environmental concentration divided by its respective weighted permissible limit, not allowing that this sum is greater than 1 (one). If the action of each of these substances was independent of the other or when they act on different organs should be assessed independently from its weighted permissible limit. (SD N 594/1999).

J

3.1.32 The access and internal roads principal must be asphalted. B





Specifications Code 3.1.33 Others roads not included in point 3.1.32 and with frequent traffic, use in the

base of the road surface, saline solution for increasing effectiveness in reducing emissions.

B

3.1.34 Other specific particulate sources, whether in the material transport, ventilation of laboratories and process itself, controlled by a scrubber or a sleeve filter shall not exceed opacity of 7%.

C

3.1.35 The use of substances which could cause depletion to the ozone layer of the atmosphere, are not allowed, see Tables 5.12 to 5.20 (Law 20096/2006).

J

3.2 Noise 3.2.1 The OGP1 project site location area is zoned Industrial, zone IV and the

maximum corrected sound pressure level is 70 dB (A) Slow, see Table 5.2 (SD N 146/1997).

J

3.2.2 Whether inside or outside a building where equipments are operating, a worker in a working day (8 hours daily) can not be exposed to stable or fluctuating noise, at an equivalent continuous sound pressure level greater than 85 dB(A) Slow measured at the position of the workers ear without any hearing protection, see Table 5.3 (SD N 594/1999).

J

3.2.3 Occupational exposure to impulse noise levels should be controlled so that in an 8-hour work day no worker shall be exposed to a peak sound pressure level over 95 dB (C) Peak measured at the position of the worker's ear without any hearing protection, see Table 5.4 (SD N 594/1999).

J

3.2.4 Equipment shall be specified must not exceed 85 dB(A) measured at operators ear level (SD N 594/1999).

J

3.3 Vibration 3.3.1 All buildings that will be designed in the project correspond to Group I, metal

industrial buildings, reinforced concrete or reinforced masonry. B

3.3.2 All buildings subject to vibration shall be designed according to F 15 mm/s at 4 Hz, increasing to 20 mm/s at 15 Hz and further increasing to

20 mm/s at 40 Hz and 20 mm/s above 40 Hz.

3.4 Liquid emissions

3.4.1 Maximize the return of process liquid effluents to the process. B

3.4.2 Process water generation should be maximized, minimizing fresh water consumption.

I A

3.4.3 The process liquid effluents must be treated before discharging into the surface (DSN90/2001).

J

3.4.4 All spillage waters shall be retained in sumps, emergency ponds, piping or launders and returned to process or sent to storage ponds.

I





Specifications Code 3.4.5 Slurry or water spills may be directed to a sump or emergency pond and

later must be recirculated to the process. I

3.4.6 Launders to conduct spills must be made of rubber-lined or HDPE-lined steel.

B

3.4.7 Spill retaining ponds shall be lined and have a reclaim pump. B 3.4.8 Slurry storage ponds shall be lined using a liner of HDPE membrane of at

least 1.5 mm of thickness. B

3.4.9 All the tanks and drums must be kept on the floor and have a filtration detecting system in accordance with API 650.

J

3.4.10 All water containing oil or toxic pollutants must be separated and clarified. Afterwards, this water may be used in the process and the separated toxic pollutants or oils disposed in a special assigned area.

B

3.4.11 Drain pipes from the chemical and metallurgic lab must separate acids from bases, cyanide and ore.

B

3.4.12 Laboratory reagents (cyanides, acids, etc.) must be neutralized before being discarded into the drainage system.

B

3.4.13 Water from the tailings thickeners must be stored in a reclaim water zone and returned to the process.

I

3.4.14 Sumps and wells must be water sealed avoiding infiltrations to the subsoil. B I 3.4.15 Thickeners will feature a leak detector located between the first coating and

ground intended to avoid either liquid see page or ground erosion. I

3.4.16 All water containing oil or toxic pollutants must be separated and clarified. Afterwards, this water may be used for road irrigation and toxic pollutants or oils must be disposed in a special area for their removal.

B

3.4.17 Process reagents spillages (cyanides, acids, etc.) must be neutralized. B 3.4.18 Sewage treatment plant effluent must be independent from other effluent

treatment systems. B

3.4.19 Sewage treatment plant effluent shall comply with the limits shown in Table 5.11 (NCh 1333/79).

J

3.4.20 Sewage treatment plant effluent, once treated, can be reused in the process plant.

I

3.5 Water

3.5.1 Potable water must comply with standard NCh 409/1 Of.2005, Potable Water Part 1 Requirements (Tables 5.5 a 5.10).

J

3.5.2 Fire protection/Fire water piping has to be independent from any other water pipe network used in the plant (NFPA).

J





Specifications Code 3.5.3 Water for dust suppression system will come from fresh water network or

potable water (see Tables 5.5 to 5.10). B J

3.5.4 Fire suppression water (Tables 5.5 to 5.10) or other system must be provided at the conveyor transfer point.

B

3.5.5 Sewage treatment plant design must take in consideration: F i) Sewage water quality. ii) Sewage water quantity. iii) Average, maximum and minimum ambient temperatures. iv) Number of people. v) Physical and biological characteristics.

3.5.6 Preference should be given to use gravitational flow systems. B

3.6 Erosion and sedimentation control

3.6.1 Avoid locating works in a floodplain area (SD N 132/2004). J 3.6.2 All the tanks shall have a stub wall to avoid spillage of liquids and erode the

surrounding area outside of the footprint of the process equipment. The exception is a fresh water tank.

B

3.6.3 Storm water flows must consider that surface water must be diverted around the plant, considering for the design a storm intensity with a return period of 50 years (calculation made from information obtained from station Portezuelo, U. Catlica del Norte and El Mercurio de Antofagasta newspaper).

G

3.7 Ponds 3.7.1 Water ponds will have slopes that ensure the safe and effective installation

of membranes. B

3.7.2 Water ponds shall be lined using an HDPE membrane and geo-membranes. B 3.7.3 Process liquids (except slurries) that spill into retaining ponds shall be lined

with appropriate material and have a reclaim pump. B

3.7.4 Pond waterproofing system for process liquids (water, process water, slurries, etc.) use geosynthetics material (geo-membranes and membranes).

I

3.7.5 Slurry storage ponds shall be lined using an HDPE liner membrane of at least 1.5 mm of thickness.

B

3.7.6 Slurry spill retaining ponds do not need to be lined and must have a reclaim pump.

B





Specifications Code

3.8 Curb and containment

3.8.1 Launders dikes and stub walls to conduct and contain spills must be made of rubber lined steel.

B

3.8.2 The flotation cells shall have a system to channel the overflow directly to a purpose built sump. The sump shall contain a sump pump capable of returning the slurry to the process.

B

3.8.3 All Reagent and Hazardous Material tanks shall be placed on concrete foundations, with purpose built drainage. The drainage shall be sufficient to convey any spilled or overflow material to the sump. The perimeter of the slab shall be entirely surrounded by a stub wall.

B

3.8.4 All tanks shall have a concrete stub wall as a primary retaining system. The exception is the fresh water tank.

B I

3.8.5 The capacity of the secondary retaining will be equal to 110% of the tank volume (SD N160/2009).

J

3.8.6 If more than one tank exists, the retention volume must be at least equal to 125% of the tank having the highest volume without taking into account the volume of the rest of the tanks.

B

3.8.7 Secondary containments shall exist in all places and facilities exposed to overflows. The exception is the fresh water tank.

B

3.8.8 Secondary containment areas must have a sump or portable pump to remove contained liquids.

B

3.8.9 Consider secondary containment systems in hazardous substance storage facilities.

B

3.8.10 Secondary containment zones shall: B

i) Have a permeability lower than 10-7 cm/s. ii) Be equipped with a sump, a pumping system and leak detection

system.

iii) If the storage deals with liquid fuel, containment zones must be weatherproofed and designed in accordance with publication API 340 and NFPA N30.

3.8.11 The areas where supplies and chemical products are stored shall have secondary containment, its volume shall contain at least 130% of the capacity of the largest tank that is in it.

I

3.9 Wastes

3.9.1 Process reagent spills shall be neutralized or channeled independently if they are incompatible among them selves or just in one pipe if their reagent classification so requires.

B

3.9.2 Grinding area zone shall have: B

2





Specifications Code i) Sloped roadways to collect spills. ii) Concrete launder to conduct filtrations or overflows towards the

tailings launder.

3.9.3 Flotation cells will be assembled on steel supports, under which a slab floor with slope will be installed along with a concrete launder allowing channeling overflows or leaks towards the accumulation ponds.

B

3.9.4 If mud desiccation will be performed and mud transferred to authorized areas, stabilized mud storage site design and operation shall guarantee that both population and environment health and wellness will not be under risks. A system capable to control seeping, gasses and odors shall be considered, (SD N4/2009).

J

3.10 Hazardous toxic materials

3.10.1 Storage areas of hazardous materials such as oils, lubricants, and chemicals must be contained in order to avoid spills and contamination to the environment (SD N78/2010).

J

3.10.2 All the tanks and drums must be kept on the floor and have a filtration detecting system in accordance with API 650.

J

3.10.3 Construct new liquid hydrocarbon storage tanks and pipelines above local surface level.

B

3.10.4 Reagents that, when mixed produce compounds hazardous to a person health, must be separated by a curb or wall. In addition, overflow lines must be separated up to the discharge point (usually in final tailings), (SD N78/2010). .

J

3.10.5 Tanks receiving oils and hazardous substances shall have a spillage retaining system.

B

3.10.6 All tanks shall have a clear tag indicating their contents. All loading lines shall also be clearly identified (SD N78/2010).

J

3.10.7 Transformers shall have a basin to collect an oil spill, which shall be conducted to a containing water proof spill well (SD N160/2009).

J

3.10.8 Hazardous material storage facilities shall be built on a slab on grade and be covered to protect it from the weather. I shall also include an isolated drainage system that flows to a purpose built sump with a sump pump (SD N 148/2003).

J

3.10.9 Equipment and/or materials containing asbestos shall not be used (SD N 148/2003).

J

3.10.10 The use of materials and/or equipments using Ploychlorinated Biphenils (PCBs) will not be allowed (Exempt Resolution N 610/1982).

J

3.10.11 NaSH and H2SO4 storage tanks must be separate and truck load out systems must be independent.

B





Specifications Code 3.10.12 Xanthate is received in bags of 1 t, as a dry powder, is stored in the reagent

building. The bags are only to be opened into a tank equipped with an agitator system and a dust control system.

I

3.10.13 All piping containing hazardous substances shall be clearly marked and colour coded accordingly, so that their content and flow direction can be identified.

A

3.10.14 Process control systems must ensure that the potential to which the personnel are exposed to hazardous substances is removed wherever possible or reduced to a level as low as it is reasonably practicable (ALARP).

A

3.10.15 There shall be automatic plant control systems in the facilities containing hazardous substances.

A

3.10.16 Control systems in case of emergencies must incorporate a system that is activated by default ("fail safe").

A

3.10.17 The types and properties of liquid fuels to be used in the project are shown in Table 5.21 (SD N160/2009).

J

3.10.18 Liquid Fuel tanks must feature a spillage control system consisting in either spillage containment safety zones or spillage conduction systems towards venues located further away, or a combination of choices (SD N160/09).

J

3.10.19 Neither materials nor liquid fuel containers can be stored within the spillage containment safety zone (SD N160/2009).

J

3.10.20 Whenever, water drainage systems are installed within stubs boundaries, drainage control system must be accessible from the exterior of this zone (EPA).

J

3.10.21 Drainage systems must not allow liquid fuel to reach natural water course, rain water sewage or waste water sewage systems (SD N160/2009).

J

3.10.22 Liquid fuel spillage diversion systems towards venues further away can be implemented as a total or partial alternative for the spillage containment safety zone (SD N160/2009).

J

3.10.23 Liquid fuel draining systems must be composed by at least a 1% slope and capacity enough so as to conduct spillage towards a pond (SD N160/2009).

J

3.10.24 Ponds must be capable to contain a volume equal to the liquid fuel tank of largest containment capacity (SD N160/2009).

J

3.11 Building and energy 3.11.1 The electrical rooms shall be located in areas free of spills. B

3.11.2 Power consumption should be minimized by using premium high efficiency motors, minimizing power losses due to low efficiency motors.

A





Specifications Code 3.11.3 The luminous flux of the lamps higher than 15 000 lumens shall not issue,

once installed on the luminaries, a hemispheric flux greater than 1.8% of their nominal luminous flux (SD N 686/1998).

J

3.11.4 The lamps for the lighting of the public spaces shall be also limited to the bandwidth spectrum of light visible to the human eye (between 350 and 760 nanometers) for which the luminous efficiency of light sources used may not be less than 80 lumens per watt (SD N 686/1998).

J

3.11.5 The lamps intended to illuminate sport or recreation facilities from 2:00 h, shall be subject to the provisions stated in paragraphs 3.11.3 and 3.11.4. On Saturdays, Sundays and public holidays the schedule will take effect one hour later (SD N 686/1998).

J

3.11.6 Grinding Plant shall have a tilted either paved or concrete ground and a concrete launder to conduct leaks or overflows towards a pool, pond or other containment system (SD N78/2010).

J

3.11.7 Electric rooms shall be located at dust free zones or feature an insulation appliance to avoid it.

B

3.11.8 Electrical rooms should be under a roofed. B

3.12 Services 3.12.1 There must be emergency eyewash station and emergency shower

wherever the following exist (SD N78/2010): B J

i) Handling of reagents. ii) Lime. iii) Fuel storage. iv) Reagents. v) Fuel loading and unloading. vi) Pulp potential splash. vii) Chemical materials. viii) Equipment maintenance area.

3.12.2 There must be emergency eyewash station and emergency shower in all reagent loading and unloading point as well as in any equipment maintenance area.

B

3.12.3 All emergency eyewash station and emergency shower must have a potable water system; this system shall have a heat tracer to maintain the temperature between 15C and 35C as well as an insulation.

A

3.12.4 There must be an audible and/or visual alarm in the immediate area of emergency shower and emergency eyewash station.

B





Specifications Code 3.12.5 The emergency eyewash station should have a filter in the main feeding

line. B

3.12.6 Portable and/or fixed eyewash station should be considered. B

3.12.7 When hazardous substances are being pumped throughout pipelines, an eyewash station and an emergency shower shall be installed at each pump station. When the transported substance is not hazardous, emergency eyewash station is necessary only.

A

3.12.8 When hazardous substances are being stored in tanks, an emergency eyewash station along with an emergency shower must be installed; whereas, for the storage of non-hazardous, an eye washer is required only. Moreover, when tanks are erected adjacent from one another, it is possible to share either the shower with eye washer or shower only. The gap between both tanks shall not exceed 20 m.

A

3.12.9 When silos are erected, emergency shower and emergency eyewash stations are required. Non-hazardous substances will not be stored in silos. Moreover, it is possible to share the eye washer and shower as long as the distance between the pertinent silos does not exceed 20 m.

A

3.13 Archaeology 3.13.1 Installations shall not be placed in a archaeological site which was previously

identified (Law No. 17,288 of National Monuments and Related Standards) J

3.14 Flora and threatened species 3.14.1 Species threatened or endangered are listed by the Red Book of Chiles

Terrestrial Flora, protected by CITES and Chilean government, any threatened species found in the area must be relocated to a safe area, specially vertebrate species.

I J A

4.0 ENVIRONMENTAL PARAMETERS OF THE BASELINE

4.1 Physical parameters Code

4.1.1 The physical parameters of the baseline referring to climate (e.g. rainfall intensity, temperature, wind direction, hydrology, hydrogeology, soils, geology, etc.) are summarized by the On site conditions document 25713-220-3PS-G000-00101.

B





5.0 GENERAL REGULATIONS

Projects shall include environmental considerations reflecting:

1. National legislation. 2. Regional legislation. 3. Provincial regulations. 4. Municipal regulations. 5. Mitigation commitments assumed in the integral development project. 6. Customers internal policies and standards.

When there was no applicable Chilean Regulation, the environmental quality and emission standards of the following countries were used in this design criteria.

1. United States of America. 2. Federal Republic of Germany.

For the use of reference standards, priority will lie with such State having similarity, in its environmental components, with the domestic and/or local situation.

5.1 Air standards Environmental concentrations of substances capable of causing rapidly narcotics or toxic effects, serious or fatal in nature, may not at any time exceed the permissible limits absolute (Supreme Decree No. 594/1999 and its amendments) presented in Table 5.1.

Table 5.1 Environmental Concentrations of Substances Capable of Causing Narcotic, Caustic or Toxic Effects.

Substances Permissible Limits

Absolutes Observations p.p.m. mg/m3

Hydrobromic Acid 3 9.9 -

Hydrocyanic Acid 4.7 5 Skin

Hydrochloric Acid (expressed as CN) 5 6 - Hydrofluoric acid (expressed as F) 3 2.3 - n-Butyl Alcohol 50 152 Skin

Cyanides (expressed as CN) 4.7 5 Skin Ethyleneglycol, Aerosol 4.0 100 A.4





Substances Permissible Limits

Absolutes Observations p.p.m. mg/m3

Formaldehyde 0.3 0.37 A.2

Glutaraldehyde 0.05 0.2 A.4

Potassium Hydroxide - 2 -

Sodium Hydroxide - 2 -

Isophorone 5 28 A.3

Methyl Ethyl Ketone Peroxide 0.2 1.5 -

Trichlorofluoromethane (FREON 11) 1 000 5 620 - Iodine 0.1 1 -

5.2 Noise standards

According to Chilean law, the maximum sound pressure limits for stationary sources correspond to those set in the SD N 146/1997, Annoying Noise Emission Standard generated from sources, of the Ministry Secretariat General of the Presidency.

In the Chilean legislation four zones are defines:

1. Zone I: Is the real estate that, according to real estate planning to regulations, corresponds to housing and local equipment.

2. Zone II: Is the real estate that, according to real estate planning to regulations, corresponds to those assigned to Zone I plus equipment at community and/or regional level.

3. Zone III: Is the real estate that, according to real estate planning to regulations, corresponds to those assigned to Zone II plus non harmful industry.

4. Zone IV: Is the real estate that, according to real estate planning to regulations, corresponds to industrial, weather non harmful or harmful.

According to Chilean legislation, the maximum sound pressure limits for fixed sources correspond to those corrected in the Table 5.2 (SD N 146/1997).





Table 5.2 Maximum Sound Pressure Limits for Fixed Sources

Maximum permissible levels of corrected sound pressure (MPC) in dB(A) Slow Zone from 7:00 to 21:00 hours from 21:00 to 7:00 hours

Zone I 55 45

Zone II 60 50

Zone III 65 55

Zone IV 70 70

The equivalent continuous sound pressure levels, for stable or fluctuating noise, correspond to those presented in Table 5.3. These values are to be considered for a worker without ear protection and measured at ear level.

Table 5.3 Exposure Time to Stable and Fluctuating Noise

PLSeq Exposure Time to Stable and Fluctuating Noise

dB(A)Slow Hours Minutes Seconds 80 24.00

81 20.16

82 16.00

83 12.70

84 10.08

85 8.00

86 6.35

87 5.04

88 4.00

89 3.17

90 2.52

91 2.00

92 1.59

93 1.26

94 1.00

95 47.40





PLSeq Exposure Time to Stable and Fluctuating Noise

dB(A)Slow Hours Minutes Seconds 96 37.80

97 30.00

98 23.80

99 18.90

100 15.00

101 11.90

102 9.40

103 7.50

104 5.90

105 4.70

106 3.75

107 2.97

108 2.36

109 1.88

110 1.49

111 1.18

112 56.40

113 44.64

114 35.43

115 29.12

For the case of impulsive noise, these are presented in Table N 5.4 and should not be beyond the values (SD N 594/1999 update by the SD N 57/2003, SD N 201/2001 y SD N 556/2000).





Table 5.4 Exposure Time to Impulsive Noise for Different Rounds Pressure Levels

PLS peak Exposure Time per Day

dB(C) Hours Minutes Seconds 90 24.00

91 20.16

92 16.00

93 12.70

94 10.08

95 8.00

96 6.35

97 5.04

98 4.00

99 3.17

100 2.52

101 2.00

102 1.59

103 1.26

104 1.00

105 47.62

106 37.8

107 30.00

108 23.8

109 18.9

110 15.00

111 11.90

112 9.40

113 7.50

114 5.9

115 4.7





PLS peak Exposure Time per Day

dB(C) Hours Minutes Seconds 116 3.75

117 2.97

118 2.36

119 1.88

120 1.49

121 1.18

122 56.25

123 44.65

124 35.44

125 28.13

126 22.32

127 17.72

128 14.06

129 11.16

130 8.86

131 7.03

132 5.58

133 4.43

134 3.52

135 2.79

136 2.21

137 1.76

138 1.40

139 1.11

140 1.00

These values are to be considered for a worker without ear protection and measured at ear level.





5.3 Water standards The norm NCh 409 part 1 - 2005 gives the Environmental Quality Standards applicable for potable water. Tables 5.5 to 5.10 detail these requirements.

Table 5.5 Essentials Elements

Elements Expressed as Total Elements Maximum Limit

mg/L Copper Cu 2.0

Total Chromium Cr 0.05

Fluoride F- 1.5

Iron Fe 0.3

Manganese Mn 0.1 Magnesium Mg 125.0 Selenium Se 0.01

Zinc Zn 3.0

Table 5.6 Non Essential Elements or Substances

Elements or Substances Expressed as Elements or Total Substances

Maximum Limit mg/L

Arsenic As 0.01 1)

Cadmium Cd 0.01

Cyanide CN -

0.05

Mercury Hg 0.001

Nitrate NO3 -

50

Nitrite NO2 -

3

Reason nitrate + nitrite 2)

1

Lead Pb 0.05 1) In the previous report of the Superintendent of Health Services, the Competent Authority may

establish the term that will must have the maximum specified limit for arsenic by those water services at time of entry into force of this norm are outweigh. That period may not exceed 10 years and set considering the infrastructure required implementing it, according to the contingency plan presented by respective company. In any case, and also subject to a prior report of the Superintendence of Health Services, the time allowed to reach the limit of 0.03 mg/L should not exceed five years.

2) Sum of the ratios between the measured concentrations of each with its maximum limit.





Table 5.7 Organic Substances

Substances Maximum Limit g/L

Tetrachloroethene 40

Benzene 10

Toluene 700

Xylenes 500

Table 5.8 Pesticides

Pesticide Maximum Limit g/L

DDT + DDD + DDE 2

2.4 D 30

Lindane 2

Methoyichloro 20

Pentachlorophenol 9

Table 5.9 Secondary Products by Disinfection

Products Maximum Limit mg/L

Monochloroamine 3

Dibromochloromethane 0.1

Bromodichloromethane 0.06

Tribromomethane 0.1

Trichloromethane 0.2

Trihalomethanes 1*)

*). Sum of the ratios between the measured concentration of each with its maximum limit.





Organoleptics Parameters (Type IV)

Must meet the requirements specified in Table 5.10 and tolerances.

Table 5.10 Parameters Relating to Organoleptics Characteristics

Parameters Expressed as Unit Maximum Limit

Physical

True Color - Unid Pt-Co 20

Odor - - Odorless

Taste - - Insipidus

Inorganics

Ammonia NH3 mg/L 1.5 Chloride Cl- mg/L 400 1)

pH - - 6.5 < pH < 8.5

Sulphate SO4= mg/L 500 1)

Total Dissolved Solids

- mg/L 1 500

Organics: Phenolic Compounds Phenol g/L 2

1) The Competent Authority in accordance with instructions given by the Ministry of Health, may accept values higher than the maximum limits identified in this table, according to health regulations in force.

The wastewater treatment plants effluent must comply with a number of parameters such as chemicals, salinity, pH and fecal coliform. This project uses the parameters listed in Table 5.11 (NCh 1333/79, same items)

Table 5.11 Effluent Treatment Targets Contaminant Unit Permissible Maximum

Limit pH Unit 6-8.5

Temperature C 35 Fecal Coliform NMP/100 mL 1 000

DBO5 mg/L 35 Total Suspended Solids mg/L 80 Total Kjeldahl Nitrogen mg/L 50

Phosphorus mg/L 10





5.4 Vibration standards

Depending on the building specific type, they are classified into 3 groups.

Group I. Sheds and metallic light industrial buildings, reinforced concrete or reinforced masonry.

Group II. Houses, offices, malls and recreational centers built according to the approved specifications. Structures of a high historic, architectural and archaeological importance not having sensitivity to vibrations. Any residential building may be classed in this group.

Group III. Any building and structure (including their content) with high historic, architectural and archaeological importance and that are being particularly sensitive to vibrations.

5.5 Ozone

These substances correspond to the group that deplete the ozone layer and are included in Annex A, B, C and E of the Protocol signed in Montreal.

The controlled substances can be pure or in a mixture; the mixture also include the isomer of any of the substances with the exception of the 1, 2- trichloroethane, and 1 isomer. Excluded are all those controlled substances in mixtures that are included in manufactured goods; the exception is if the container contains any of these substances or mixtures.

Recovered controlled substances are those that have gone through a preliminary purification process.

Regenerated controlled substances are those that have been treated in such a way, such as filtering, drying, distillation, chemical treatment, that makes them comply with a certain quality specification/norms.

The Ozone Layer Depleting Potential is the factor established in the Montreal Protocol and addendums that standardize all the controlled substances as a function of this factor.

Controlled substance corresponds to those shown in Tables 5.12 to 5.20. The Tables 5.12 and Table 5.13 compose the Annex A, Tables 5.14 to 5.16 compose the Annex B, Tables 5.17 to 5.19 compose the Annex C and Table 5.20 composes the Annex E.





Table 5.12 Controlled Substances, Annex A - Group I

Annex A, Group I

Name Chemical name Formula PAO NCAS N NNUU

CFC-11 Fluoro trichloro methane CFCl3 1.0 75-69-4 83589-40-6 1022

CFC-12 Dichloro difluoro methane CF2Cl2 1.0 75-71-8 1028

CFC-113 Trichloro trifluoro ethanes C2F3Cl3 0.8 76-13-1

CFC-114 Dichloro tetrafluoro ethanes C2F4Cl2 1.0 76-14-2 1958

CFC-115 Chloro pentafluoro ethanes C2F5Cl 0.6 76-15-3 1020

Table 5.13 Controlled Substances, Annex A - Group II

Annex A, Group II


Halon-1211 Bromo chloro difluoro methane CF2BrCl 3.0 353-59-3 1974

Halon-1301 Bromo trifluoro methane CF3Br 10.0 75-63-8 1009

Halon-2402 Dibromo tetrafluoro ethanes C2F4Br2 6.0 124-73-2

Table 5.14 Controlled Substances, Annex B - Group I

Annex B, Group I


CFC-13 Chloro trifluoro methane CF3Cl 1.0 75-72-9 1022

CFC-111 Pentachloro fluoro ethanes C2FCl5 1.0 354-56-3

CFC-112 Tetrachloro difluoro ethanes C2F2Cl4 1.0 76-12-0 1078

CFC-211 Heptachlor fluoro propane C3FCl7 1.0 422-78-6





Annex B, Group I


CFC-212 Hexachloro difluoro propane C3F2Cl6 1.0 3182-26-1

CFC-213 Pentahcloro trifluoro propane C3F3Cl5 1.0 2354-06-5

CFC-214 Tetrachloro tetrafluoro propane C3F4Cl4 1.0 29255-31-0

CFC-215 Trichloro pentafluoro propane C3F5Cl3 1.0 4559-43-2

CFC-216 Dichloro hexafluoro propane C3F6Cl2 1.0 661-97-2

CFC-217 Chlorine heptafluoro propane C3F7Cl 1.0 422-86-6

Table 5.15 Controlled Substances, Annex B - Group II

Annex B, Group II


CCl4 Carbon tetrachloride Tetrachore methane CCl4 1.1 56-23-5 1846

Table 5.16 Controlled Substances, Annex B - Group III

Annex B, Group III


C2H2Cl3 1,1,1-Trichloroethane (methyl chloroform) C2H2Cl3 0.1 71-56-6 2831





Table 5.17 Controlled Substances, Annex C - Group I

Annex C, Group I

Name Chemical name Formula PAO NCAS N NNUU HCFC-21** Dichloro fluoro methane CHFCl2 0.04 75-43-4 1020

HCFC-22** Chloro difluoro methane CHF2Cl 0.055 75-45-6 1018

HCFC-31 Chloro fluoro methane CH2FCl 0.02 593-70-4

HCFC-121 Tetrachloro fluoro ethanes C2HFCl4 0.01-0.04 364-14-3

HCFC-122 Trichloro difluoro ethanes C2HF2Cl3 0.02-0.06 354-21-2

HCFC-123 Dichloro trifluoro ethanes C2HF3Cl2 0.02-0.06 306-83-2

HCFC-123**

2.2-Dichloro-1, 1,1-Trifluoro ethane

CHFCl2CF3

0.02 306-83-2

HCFC-124 Tetrafluoro chloro ethanes C2HF4Cl 0.02-0.04 2837-89-0 1021

HCFC-124**

2-Chloro-1 ,1,1,2-Tetrafluoro ethane CHFClCF3 0.022 63938-10-3 1021

HCFC-131 Trichloro fluoro ethanes C2H2FCl3 0.007-0.05 359-28-4

HCFC-132 Dichloro difluoro ethanes C2H2F2Cl2 0.008-0.05 1849-08-7

HCFC-133 Trifluoro chloro ethanes C2H2F3Cl 0.02-0.06 1330-45-6 1983

HCFC-141 Dichloro fluoro ethanes C2H3FCl2 0.005-0.07 1717-00-6

HCFC-141b 1,1-Dichloro-1-Fluoro ethane CH3CFCl2 0.11 1717-00-5

HCFC-142 Chloro difluoro ethanes C2H3F2Cl 0.008-0.07 25494-29-4 2517

HCFC-142a 1-Chloro-1 ,2-Difluoroethane CH3F2Cl - 338-64-7 2517

HCFC-142b** 1-Chloro-1 ,1-Difluormetano CH3CF2Cl 0.085 75-68-3 2517

HCFC-151 Chloro difluoro ethanes C2H4FCl 0.003-0.005 110587-14-9





Annex C, Group I


HCFC-221 Hexachloro fluoro propane C3HFCl6 0.015-0.07 422-26-4

HCFC-222 Pentachloro difluoro propane C3HF2Cl5 0.01-0.09 422-49-1

HCFC-223 Tetrachloro trifluoro propane C3HF3Cl4 0.01-0.08 422-52-6

HCFC-224 Trichloro tetrafluoro ethanes C3HF4Cl3 0.01-0.09 422-54-8

HCFC-225 Dichloro pentafluoro propane C3HF5Cl2 0.02-0.07 127564-92-5

HCFC-225ca**

1,1-Dichloro-2 ,2,3,3,3-Pentafluoro propane

CF3CF2CHCl2 0.025 422-56-0

HCFC-225cb**

1,3-Dichloro-1,2 ,2,3,3-Pentafluoro propane

CF2ClCF2CHClF 0.033 507-55-1

HCFC-226 Chlorine hexafluoro propane C3HF6Cl 0.02-0.10 431-87-8

HCFC-231 Pentachloro fluoro propane C3H2FCl5 0.05-0.09 421-94-3

HCFC-232 Tetrachloro difluoro propane C3H2F2Cl4 0.008-0.10 460-89-9

HCFC-233 Trichloro trifluoro propane C3H2F3Cl3 0.007-0,23 7125-84-0

HCFC-234 Dichloro tetrafluoro propane C3H2F4Cl2 0.01-0.28 425-94-5

HCFC-235 Chloro pentafluoro propane C3H2F5Cl 0.03-0,52 460-92-4

HCFC-241 Tetrachloro fluoro propane C3H3FCl4 0.004-0.09 665-27-3

HCFC-242 Trichloro difluoro propane C3H2F2Cl3 0.005-0.13 460-63-9

HCFC-243 Dichloro trifluoro propane C3H2F3Cl2 0.007-0.12 460-69-5

HCFC-244 Chloro tetrafluoro propane C3H2F4Cl 0.009-0.14 134190-50-4

HCFC-251 Trichloro fluoro propane C3H4FCl3 0.001-0.01 421-41-0





Annex C, Group I


HCFC-252 Difluoro dichloro propane CHFCl 0.005-0.04 819-00-1

HCFC-253 Trifluoro chloro propane CHFCl 0.003-0.03 460-35-5

HCFC-261 Dichloro fluoro propane C3H5FCl2 0.002-0.02 420-97-3

HCFC-262 Chloro difluoro propane C3H5F2Cl 0.002-0.02 421-02-3

HCFC-271 Chloro fluoro propane C3H6FCl 0.001-0.03 430-55-7

**. Identifies the commercially most viable substances. The PAO values related to these will be used in the Protocol

Table 5.18 Controlled Substances, Annex C - Group II

Annex C, Group II

Name Chemical name Formula PAO NCAS N NNUU HBFC-22B1 Fluro dibromo methane CHFBr2 1.00 75-61-6 1941

Bromo difluoro methane CHF2Br 0.74 1511-62-2

Bromo fluoro mrthane CH2FBr 0.73 373-52-4

Tetra-fluoro ethanes C2HFBr4 0.3-0.8

Tribromo difluoro ethanes C2HF2Br3 0.5-1.8

Dibromo trifluoro ethanes C2HF3Br2 0.4-1.6

Bromine tetrafluoro ethanes C2HF4Br 0.7-1.2 124-72-1

Tribromo fluoro ethanes C2H2FBr3 0.1-1.1

Dibromo difluoro ethanes C2H2F2Br2 0.2-1.5 75-82-1-

31392-96-8

Bromo trifluoro ethanes C2H2F3Br 0.7-1.6 421-06-7

Dibromo fluoro ethanes C2H3FBr2 0.1-1.7 958-97-4

Bromo difluoro ethanes C2H3F2Br 0.2-1.1





Annex C, Group II

Name Chemical name Formula PAO NCAS N NNUU Bromo fluoro ethanes C2H4FBr 0.07-0.1 762-49-2

Hexabromo fluoro propane C3HFBr6 0.3-1.5 29470-94-8-13427-

35-7

Pentabromo difluoro propane C3HF2Br5 0.2-1.9

Tetrabromo trifluoro propane C3HF3Br4 0.3-1.8

Tribromo tetrafluoro propane C3HF4Br3 0.5-2.2

Pentafoluoro dibromo propane C3HF5Br2 0.9-2.0

Bromo hexafluoro propane C3HF6Br 0.7-3.3 63905-11-3

Pentabromo fluoro propane C3H2FBr5 0.1-1.9

Tetrabromo difluoro propane C3H2F2Br4 0.2-2.1

Tribromo trifluoro propane C3H2F3Br3 0.2-5.6

Tetrafluoro dibromo propane C3H2F4Br2 0.3-7.5

Bromo pentafluoro propane C3H2F5Br 0.9-14 422-01-5

Tetra-fluoro propane C3H3FBr4 0.08-1.9

Tribromo difluoro propane C3H3F2Br3 0.1-3.1

Trifluoro dibromo propane C3H3F3Br2 0.1-2.5 431-21-0

Tetrafluoro bromo propane C3H3F4Br 0.3-4.4 679-84-5

Tribromo fluoro propane C3H4FBr3 0.03-0.3

Dibromo difluoro propane C3H4F2Br2 0.1-1.0

Bromo trifluoro propane C3H4F3Br 0.07-0.8

Dibromo fluoro propane C3H5FBr2 0.04-0.4

Difluoro bromo propane C3H5F2Br 0.07-0.8

Fluoro bromo propane C3H6FBr 0.02-0.4 352-91-0





Table 5.19 Controlled Substances, Annex C - Group III

Annex C, Group III

Name Chemical name Formula PAO NCAS N NNUU CH2BrCl Bromochloromethane CH2BrCl 0.12 74-97-5 1987

Table 5.20 Controlled Substances, Annex E - Group I

Annex E, Group I


CH3Br Methyl bromide Methyl bromide Brome methane

CH3Br 0.6 74-83-9 1062

5.6 Liquid fuel This project uses the liquid fuel listed in Table 5.21.

Table 5.21 Liquid Fuels Description

Liquid Fuel Class Fire Point infP C (F)

Boiling Point ebP C (F)

Liquid Fuel Type

Inflammable (Class I) IA inf

P < 22.8 (73) ebP < 37.8 (100) Gasoline 93, 95 and 97 octane, aviation, raw petroleum, benzene, naphtha, white gasoline and other light solvent.

IB infP < 22.8 (73) ebP 37.8 (100)

IC 22.8 (73) < infP < 37.8 (100) - Diesel petroleum

6.0 REFERENCES

The designs to be made will be subject to norms and criteria contained in this document. This Design Criteria must be used in all the Disciplines of the project.

environmental design criteria

Documents

bechtel confidential

electronic documents

nonbechtel party

environmental criteria

contract page

guideline documents

design criteria

environmental parameters