Appendix B

Reports on Air Quality Management -

Dustwatch

1. Ross Demolition Dust

Management Plan

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NOVEMBER 2015 – ROSS DEMOLITION DUST MANAGEMENT PLAN

1.0 INTRODUCTION This dust management plan for a plant design construction, installation and commissioning as well as the final operation will in the case of a recycling plant like that of Ross Demolition consist of a multiple set of control plans. We are looking at a plant that will be going through several reasonably limited time periods before production will be running and a final dust control plan is instituted.

2.0 HISTORY AND DEVELOPMENTS TO DATE

From time to time there have been developments around operations at the site and with a very vigilant residential population there have been a liberal number of complaints especially during a period of time when crushing was undertaken on the site. The complaints at that stage centered on both dust and noise from the site and this led to a cessation of work of this nature. During this period monitoring was undertaken using multi-directional DustWatch units and reports covering this monitoring are available for scrutiny. Once the crushing was stopped which coincided with the summer dry months the dust levels were observed as a dropping off to a relatively stable condition which then indicated conditions with no production and crushing. The site was still in use as a workshop and corporate centre with several non-dirty occupation tenants renting premises, buildings or open yard space.

With the planning of an new plant facility for the site and with this plant design required to cater for a high quality specification crushing plant, every reasonable measure will be utilized to produce a plant that complies with all dust regulation requirements and statutory limits, this Dust plan must in terms of the final installation be read in conjunction with the design criteria and the specification of the new plant.

In the meanwhile this plan will outline measures during the preliminary work like any demolition requirements, excavations for necessary foundations and related civil works required and any actual building work, and finally the permanent operations plan will be instituted.

3.0 PROPOSED MONITORING FOR ROSS DEMOLITION

While regulation based on an obsolete American Standard are required to be instituted in terms of South Africa requirements these are actually of like use in proving all but the most basic and unproved assumptions of acceptability,

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such measurements and determinations are not undertaken anywhere else in the world and not even in America so they are not internationally accepted.

It is important that while a situation as complex as that at Ross Demolition be thoroughly assessed and monitored, we will need to also produce data to satisfy the regulation and using the approved and ambiguous standard equipment will also not prove or disprove compliance other than a vague result. The ASTM units with buckets all compliant with the ASTM requirements will be installed and these will yeald some sort of result. We do fortunately have information and data of a far superior nature covering a longer period during a period when production was run with crushing being undertaken on site and a further period after the production was stopped and monitoring can be grossly compared with a greater reliance being made on the contents of samples rather than the erratic mass results which will be present at the site as was actually noted previously. The monitoring will indicate conditions during the construction and finally the operation of the new plant.

4.0 HANDLING AND MINIMISATION OF DUST DURING THE EXCAVATIONS ON

SITE AND CONSTRUCTION While it must be accepted that some dust will be generated during the construction phase of any project with this evident as soon as a site is established and work gets started. As noted during the design stage, the fact that we will initially undertake excavations for the plant shed structure and construct the said pop foundations will be a minimum dust undertaking as the excavations will involve some jackhammer work on a rotational basis working from one to the next and so on. There are no real precautions that can be undertaken under these conditions and our soil examination in the area has indicated some softer pickable shales as present in addition to loamy materials requiring minimal rock breaking. With individual foundations unlikely to be larger than 1000x1000x1000 deep and with around 30 being required this will be more labour intensive rather than undertaken by machinery and generating high dust loads. Once the foundations have been cast, the structure should take a week or two to erect and a further 10 days to sheet (unless additional attenuation measures take time). The only other activity involving any excavation work will be the undercarriage wash facility sump and the clarifying sump which can both be excavated using a light digger in a day or two. Both of these excavations will be undertaken when the winds are minimal but with south easterly winds blowing any dust will be carried away from the dust sensitive areas over the adjacent property and Voortrekker Road. The dust will be minimal with dilution taking place. We also note that wetting down can be undertaken where necessary. All other construction will then be undertaken with the new crush plant building being put together.

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5.0 LONG TERM DUST MANAGEMENT

As considerable thought and design has been put into the control of dust generation and prevention we do not expect there to be any significant generations of dust on the property during production conditions and almost all measures will be aimed at making sure that the most dust-free conditions are maintained and to achieve this the dust control filter plant will have to be inspected daily until the unit operation has settled down and the operation is running well. A standardized check list for daily inspections will be used as a basis for training of a responsible technician or manager and covering especially the cleaning of plant and equipment. The checklist will be drawn up during commissioning to ensure relevance with final installation. The training will take place during the dry and wet commissioning so that the responsible person will have an opportunity of being involved in the commissioning duty and efficiency testing and duct system duty determinations and pressure testing. All larger installations are commissioned in this way and the training undertaken by the design engineer. During and immediately after commissioning precipitant dust and airborne occupational dust levels will be determined within the various sections of the plant building before the commissioning and production operational condition reports are generated and presented to the client who must make these available under his signature to the local air quality authorities. All such tests will be undertaken by the design engineer or under their direction with these reports then being included in the plant operational manual. We will also need to do dust sample collection on a daily or weekly basis to determine individual plant contribution during the early stage post commissioning.

6.0 OPERATIONAL MANUAL AND STAFF TRAINING

As the dry and wet commissioning forms part of the training of the nominated

responsible person it is also important that such a person or persons be ofé with

the content of the Operational Manual. The Manual will include the following in addition to any additionally considered material to assist the operator and management but is likely to also have a lot of additional material from the commissioning notes.

Original design duty and salient points applicable to the installations.

Suitable schematic diagrams of all operational items and the correct settings and significance of the adjustments and how to affect these will be added.

A list and suggested stock levels of all consumables (filter bags) and other required spares will be added and alternative available materials.

A planned maintenance schedule must be drawn up by the undertaking management and instituted.

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7.0 DUST MONITORING REVIEW OF DUST LEVELS

With any long term plan it is necessary to view the results at intervals and determine longer term cycles with a view to establishing a consistency in the monitoring results. As a large proportion of any collected material will remain that from ambient sources the proportion of the undertakings dust and that from other sources will have to be determined in order to able to establish long-term trends which are the only aspect of ASTM compliance that is actually considered internationally as having any significant value. The monitor units are incapable of capturing any sort of ongoing dust as they are being insisted on merely to meet local legislated requirements and thus this material will be of little value.

Yours faithfully

Gerry F. Kuhn (FMVS, MSAIOH, Grad SE)

Updated 10/12/2015

2. Ross Demolition Plant Design

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DESIGN OF DUST CONTROL MEASURES FOR THE ROSS DEMOLITION NEW FACILITY AT THE MAITLAND PROPERTY

REVISED – OVERALL FINAL DOCUMENTS – 22/11/2015

1.0 INTRODUCTION

All new plants and facilities with the propensity to generate dust as well as those that are handling or are to handle any dust generation potential need to be viewed against several factors before any dust control measures can be decided on and the system designed. The regulatory requirements for health and safety are paramount in order to protect both the staff and workers.

The regulatory requirements must be considered in respect of the general public as well as the sustainability in terms of Environmental legislation. The local by-laws must also be reviewed but as these are generally very broad and non-specific and other requirements a lot more prescriptive, any system covering the requirements of health and considering that of general public and environmental legislation will more than cover any by-laws that may be applicable.

2.0 EMISSION POLLUTANTS

We note several probabilities and some possible emission contents that need to be considered for the New Ross Demolition recycling process plant.

Recycling material consists of natural sand and aggregate stone or burnt bricks as well. In addition there is a content of hydrated lime in the form of cement. This is found in the hydroxide form and agricultural soil dust with these as relatively inert.

The pollutants which are normally associated with cement can be considered to be relatively insignificant. The proportion of cement as a hydroxide in the recycled material is a solid and the slaking generated emissions have all taken place. The other traces which are in minute quantities within dry cement powder are no longer carried as fine respirable or inhalable thoracic dusts but rather as a higher or larger particulate in a non-respirable form once crushing or sizing takes place.

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Quartz in such a material remains a very large particulate as finer materials of a softer nature will always break or shatter in preference to harder quartz. The sand particulates are also found as a grain or rounded particle which is thus in its strongest form. Any fine total dusts present are thus of lime with finer clays which is a burnt clay, is usually of irregular or finer flaky form which again is slightly softer than the calcium hydroxide material. Fine quartzites are also softer due to the heat cracking and feldspar intrusions applicable in the material and predominant in a laterite form. The aggregate material used most often in the Western Cape is laterite with a looser structure and softer consistency.

Diesel particulate is relatively innocuous when compared with lead or metal containing petrols although both have known carcinogens. The activities associated with the plant are limited to short periods for the delivery trucks and although longer operating periods for the FELS the relative amount of emission is less as the FELS have smaller engines and are not run at continuous high loads. With the crusher engines being slightly larger, these are running closer to design utilisations and are thus operating more effectively. These are in fixed positions and thus a fixed duct system is easily located to duct emissions out of the building.

Finer dust, respirable and other thoracic dusts will be extracted and collected using filtration technology. The dry powdery dust will be puddled and any handling will be of the puddle or muddy material rather than the powdery dust. Escape of any dry fines product will thus be minimal.

3.0 ASSESSMENT OF THE PROCESS

Essentially the process requirements will be as follows: 3.1 Recycle building masonry and concrete from any demolition process will

be delivered to the site by haul vehicles which will then tip the material in an enclosed environment where such an action is not affected by climatic condition or winds of an uncontrolled nature. Such tipping does generate dust during the tipping process and vehicle movements in areas where fines to a limited extent are generated and then only during the tipping process, all these activities are enclosed. Humidification will permit improved precipitation of dry fines as humid air has less of a propensity of carrying fine dust particulates.

3.2 Tramming onto the fine material laden floors is also a further means of dust generation which will also fortunately be limited to the enclosed area mentioned above. Spillage will be controlled in the facility.

3.3 As already intimated above dust escape has to be controlled and limited

including the displacement of air through pulvation (displacement of dust-laden air) and movement through the enclosure by control measures and

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procedures. Any travelling speeds within the enclosed building have to be kept to a minimum and there is in any case very limited movement during any process within the building, which has a bearing on the disturbance of precipitated fine particulate dusts.

4.0 CONTROL OF AIR QUALITY

4.1 While control of the resulting air quality in the enclosed tipping, stockpiling and tramming area will be addressed by humidifying sprays and allaying means we propose to meet an air quality standard in this area to achieve three things:

Prevent escape of dust as much as possible when vehicles enter and leave the building.

Control dust from direct generation activities within the building.

Maintain conditions of worker protection by management and control. Drivers will need to keep windows closed at all times when inside the structure enclosure and any front end loader operators given air conditioned cabs and they will have to keep windows closed at all times while within the structures as well. Respirators are only of secondary use but use is advocated. Air conditioners offer only a degree of cab pressurisation.

The above mentioned humidification sprays play a large part here.

4.2 The crusher operators will similarly be give an enclosed cab which will be air-conditioned where required or at least pressurized with dust free air.

4.3 At the crusher the generation of dust is usually very much higher than in an enclosed structure and much of this dust is similarly respirable which will be extracted at source around the tip and by the feed on point enclosure and extraction provision on each of the mobile crushers. This material will be recovered at a dust plant either by bag filtration or scrubbing system observing an emission of below 50mg/m3 at the elevated stack/fan discharge evaseé. Any working place and immediate facility will have an air quantity of 10mg/m3 as maximum in line with the requirements for total dust as dictated by the Occupational Health and Safety Act and Regulations.

The quartz content is likely to be low as quartz breakage is low during crushing of construction rubble: see Section 2.

4.4 All tramming areas where sized product is handled will be treated as the

raw material delivery and tipping area and again will have humidifying sprays.

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4.5 Any stacks and any general building ventilation points will be designed for

exhaust air dilution in line with International practice.

4.6 Housekeeping within the structure must be of the best and vigilance of cleanliness standards will have to be observed at all times.

5.0 CONTROL OF WATER AND ANY SLURRY/MUD RUN-OFF

We note that the quantity of water required will be minimized to minimise the requirement for potable water and we do not envisage the generation of any mud or excessive run off although property entrance and exit areas will have drain collection points and will have sumps for any control that may be needed. As the above measures are aimed at the plant enclosure stockpile and crusher areas we note a requirement for under carriage and tyre cleaning to minimize carry out of any material onto the access routes from the Maitland premises.

6.0 UNDERCARRIAGE WASHING FACILITY FOR TRUCKS We anticipate that any trucks exiting the plant building will have to have the undercarriage washed in a drive through system minimizing time wastage, minimizing any vehicle generated dust on the site and minimize vehicle wear in addition to minimizing any public road contamination by dust or other materials which may be carried off site. The undercarriage wash facility water will also be used optimally and any carry over will be minimized with water reused and then used for surface allying of the dust in the plant building as well as sump recirculation.

7.0 AIR CHANGES AND VENTILATION OF THE PLANT ENCLOSURE BUILDING

Due to the heat generation within the building, that from the solar radiation load and any diesel emissions these will need to be expelled from the building and this will be achieved by mechanical roof fans which will also cater for metabolic requirements with air displacement inwards at each door and out at the top of the building where dilution principles will be observed. This is standard practice throughout the world, in industry and on mining operations.

8.0 SUPERVISORS CABIN AND WORKER PROTECTION

The reason for specifying an operators cabin is to control the incumbent’s atmosphere permitting dust free, air conditioned air in a pressurized enclosure. While the positioning of such a facility will be dictated by the operational management, this could be dispensed with if the general building conditioning remains specification compliant. Ongoing design will establish conditions in the building and indicate the final requirement in this regard.

9.0 PROVISION FOR COMPACTORS/BRICK MAKING

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We note that the noise generated by such compactors and brick making machines is of a nature where attenuation is difficult and costly and measures need constant care and vigilance and we do not recommend that such facilities ever be considered for the site due to the surrounding residential areas and the sensitivity of these areas.

10.0 EXTRACTION AIR QUANTITIES In order to obtain or establish optimal air extraction quantities at the tips and the crushed material transfer point at each of the crushers we have calculated this using the established Anderson formulae which is extensively used internationally and found to be suitable to recycled material dust and mine dusts and very suitable at sea level condition or deep mines where air densities are higher.

With QR = the required extraction equating the pulvated air through the system. AU = open areas through which air can be induced into the circuit by falling material. R = the material flow rate in kg/second. F = the fall height of material in the system or section of the system being considered. D= Aerodynamic particulate sizing in meters and referring to diameter. For the tipping operation a typical 2yd3 bucket is tipped in 3 seconds as an allowance 1.85m3/s = 1.85m3/s or 0.6166 m3/s To handle the load displacement, the above needs to be applied to the Anderson formula and will yield the following requirement in respect of the fall of material through the tip.

The material fall mass is thus 1.85m3 x 2.4ton or 1.85 x 2400kg in 240 seconds as the volume and mass material will take about 4-5 minutes to run through the tip (governed by the crusher capacity through put giving a value of 18.5kg/s)

And

The total extraction required from the tip enclosure will thus be 0.75m3/s + 1.85m3

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= 1.675m3/s and in addition to this we will divert 0.370m3/s to the underside of the jaw so that all displacement is handled (similarly calculated). At the transfer point an additional 0.237m3/s to the underside of the jaw so that all displacement is supplied to ensure that there is displacement offered (of the dusty air). The total extraction for each crusher will thus be 2.282 m3/s with an allowance for balancing bringing the result to 2.50m3/s per crusher and a plant total selected accordingly, of 7.5m3/s for the 3 crushers and transfers. If we now consider the conveyor transfers and screen we note a requirement of around 2.50m3/s. The plant total will thus be 10m3/s @ the operating duty dictated by the final layout and duct balance. 11.0 SPECIFICATIONS FOR THE SYSTEM

The system balance diagram, layout and sizing of ductwork needs to be undertaken to establish the final system and this is done in conjunction with the final layout and will be made available to the tenderers as part of the specification.

We do not suggest that a twin or 3 stage scrubber be used in this application as the envisaged sump will have to double in size and the cost of potable water (and availability problem). The water utilization of a multi-stage scrubber is around 55-60 litre/minute although the water will mostly be reused for dust allaying, this is still a lot of water and Cape Town water is scarce. Scrubbing is also marginally less effective and efficient than filtration unless a venturi scrubber is used at a power premium of 150 to 200%. The actual envisaged water use will be around 3 litres per minute as a maximum in terms of a potable supply.

The dust filter plant must have the following specifications as a minimum requirement:

Duty 10,0m3/s preferably select at minimum 10.5 m3/s minimum with a filter

rate of 1,2m/min as maximum and media polyester or polypropylene to cater for the envisaged slight moisture that may be present in the extracted air.

Water use must be specified by the supplier who will be held accountable for the efficiency at this flow rate to achieve the 50mg/m3 stack conditions. They are to note that clarified water will be utilised and not potable water.

The stack must have a minimum dispersion height of 4000 above roofs to effect dilution by wind and must also be fitted with a recovery evaseé.

The stack velocity to be 14,0m/s – 15,0m/s in order to minimise absorbed power and to permit an acceptable power regain at the evaseé and reduce noise.

Access to both the clean air plenum which must be fitted with twin 1200 strip fluorescent tube lights for inspection and any bag changing activities as well as the hopper section cleaning. A step plate must be provided in the hopper to permit internal access and for safety, a grab rail.

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The hopper must be fitted with a rotary valve of duty to suit 120% of the expected dust that will be generated.

The anticipated dust load at inlet is calculated and expected to be 1 – 2g/m3 at maximum.

The feed to the puddling sump must extend below the sump water line by 350mm and dip leg to have a minimum diameter of 300mm and must take the form if directly fed off either a suitable double flap valve or rotary valve of suitable duty.

Should a screw conveyor be required to enable height for the feed in to be achieved then the outlet dip leg must be similar to that described for the double flap valve and rotary valve.

The puddling sump is detailed on drawing GKO 805 (15) with the envisaged duct system outlined on drawing GKO 793 (15).

The puddling operation required for handling the fine dust from a bag filter will use considerably less water at 10-12 litre/minute with the secondary use of this puddle over flow from the settling sump used for the dust allaying purposes together with the secondary use water from the truck undercarriage cleaning water. This document is to be read in conjunction with the: System design sheet Balance Diagram Dust system Balance sheet and calculations Diagram layout Of these numbers 1, 2 and 3 will be available once the final layout in the building is approved and building size and details machinery decided on.

Yours faithfully

Gerry F Kuhn Drawings: GKO 793 GKO 797 GKO 799 GKO 800 GKO 700 GKO 796

3. Ross Demolition Plant

Spraying System Design

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ROSS DEMOLITION DESIGN OF THE STOCKPILE DUST ALLAYING SPRAY SYSTEM PHILOSOPHY FOR THE ROSS DEMOLITION NEW RECYCLE FACILITY

AT THE MAITLAND PROPERTY REVISED OVERALL FINAL DOCUMENT 22/11/2015

1.0 INTRODUCTION

If we examine the plant area and stockpile enclosure building and consider the possible emissions from the building we note that there is an integrated approach to the control of any emissions by the following 1.1 Dust Prevention 1.2 Dust Minimisation where generation does occur by engineering out the

potential dust generation points or to enclose and then extract. 1.3 Direct control and handling of dust where this does occur at source. 1.4 Dust movement is minimised by decreasing atmospheric density and

humidifying, to make carrying the dust more difficult. To illustrate this further, the material delivered to site is done by trucks which are covered and which also tip within the stockpile enclosure and have the undercarriage washed off after this so these do not tram fines on to the public roads. Control of dust within the stockpile enclosure also plays a part with dust prevention from the plant by eliminating windblown material by the prevailing high winds. All this satisfies points one above. Looking at point 2 as dust minimisation: The product tipping trucks can be directed to dump anywhere within the primary stockpiling area of the enclosing building which minimises any travel within the structure as the dumping can occur closer to the tip with the stockpiling area being used in such a way that sprays can be applied to individual areas that are perhaps not used daily and then these are available as a surge capacity requiring little or no spraying while the live capacity area can be addressed. Undercover stockpiles will not lose moisture at anywhere near the stockpile rates when these are open to high evaporating winds. The fact that there is continuous extraction at the tips will also handle and extract from areas where the most fine dust is generated preventing this from building up the building concentration. This facility not only minimises dust but also handles direct dust generation at the generated sources. Where material is very dry, dust created will be extracted to an extent between tipping operations over time.

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The spray systems are not integrated as permanently ‘in use’ but rather as a managed control system. Water use is to be optimised, especially any potable supply. If the humidity is increased, the capacity for air to carry dust is diminished and dust in the air is more quickly precipitated out. Our diagram indicates provisional positioning for water sprays but again will be subject to final design. Hose reels are provided for selective wetting down of muck piles in addition to humidification. This drawing has not been completed as much of the water system needs to be finalised and this report will then also have to reflect the final conditions but we draw attention to drawing GKO 799 water use arrangement. The clarifying sump size will be finalised as a function of the final spray and puddling water requirements as well as any water expected from the undercarriage washing facility.

Yours faithfully

Gerry F. Kuhn (FMVS, MSAIOH, Grad SE) Updated 22/11/2015

Refer drawings: GKO 799 GKO 800 GKO 796

4. Ross Demolition Plant

Ventilation System Design

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ROSS DEMOLITION – DESIGN OF BUILDING VENTILATION MEASURES FOR THE

NEW FACILITY AT THE MAITLAND PROPERTY REVISED – OVERALL FINAL DOCUMENT 22/11/2015

1.0 INTRODUCTION As outlined in the dust control Measures Design Document there is a requirement to handle conditions within the crusher building and these include:

The diesel particulates smoke/carbon generated by trucks tramming material into the building stockpiles as well as product from the building internal FELS in addition to that generated by the engines within the mobile crusher units.

The heat generated by vehicles.

The heat generated by the solar and ambient conditions.

Consideration of the natural ventilation pressure generated within the building by mainly the ambient South Easterly wind conditions.

Consideration of the dust extraction which is already being extracted from the building and the metabolic rate of heat requirement.

Most latter items above have been considered in the design of the dust control needed for the installation material handling and is covered by the dust extraction and the utilised vehicle power confirmed by the client. Actual check will be made before the final issue of specifications are made.

2.0 DIESEL VEHICLE AND OTHER EMISSIONS With at least two front end loaders operating in the building and up to two haul vehicles delivering materials with a further one recovering product, it should be noted that the three haul vehicles actually spend very little time in the structure and thus their emissions of diesel particulate noted on a continuous basis is very little and amounts to 5 to 6 air changes per hour only when one or more are inside. The facility operator confirms that equipment has the following installed equipment capacity and load factors.

2.1 HAUL TRUCKS

Hitachi ZW180 trucks have 126 kW installed each x 3 operating at about 55% maximum efficiency. Inefficiencies report as heat 45/100 x 126 kW x 3 = 170 kW x 55/100 = 94 kW or extraneous noise.

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2.2 FRONT END LOADER UD290 units have 81kW installed each x 2 operating @ 65% maximum on a continuous basis. 35/100 x 162 = 56.7 x

55/100 = 31.185 kW. The above values will cover the heat generation and emission dilution with the trucks limited to the stockpile areas – two for the primary stockpile and one for the product stockpile loading area where product is loaded for export.

2.3 MOBILE CRUSHER UNITS Three units – Pegson 186kW installed with mostly 2 operating at 75% + load Considering the above activities and allowances the building will require a ventilation rate of 15 air changes per hour restricted to the central plant area and 10 air changes in the stock piling area. The latter is restricted in the case of the raw product stockpiles to an area of 26.0m x 19.5m at a height of 7.0m yealding a building volume of 72.5m3 x 10 changes per hour. The 725m3/3600 = 9.85m3/s for the Primary stockpile area. The Central plant area requiring 15 air changes/hour has a physical volume of 4732m3 x 15/3600 = 19.7 or 20m3/s. With extraction in this area already accounting for 10m3/s a further 10.0m3/s is required for the area. The product stockpile area being of a similar volume to the central plant area at 4732m3 x 10/3600 = 13m3/s or to unify the fan size and duty this will then have 15m3/s extracted.

3.0 EXTRACTION REQUIREMENTS

We propose that the primary stockpile area be fitted with 2 extraction fans of 5.0m3/s each (4 pole 980 rpm axial with evaseé fitted attenuation materials and non-return flaps.

The central plant area similarly will require 2 similar fans and the product stockpile area be fitted with a further two. As this area is likely to have the lowest dust generation we note a degree of wind pressurisation also takes place here and thus while the ventilation requirement is 15 m3/s and we have allowed for 10 m3/s this will still be adequate. The fans are to be roof extraction 4 pole 960 rpm axial fans fitted with fan attenuators, clam-shell flaps to prevent recirculation and building attenuation measures. When the fans are not in operation the clam shell doors will prevent short circuiting and limit noise break-out. Fans will be selected for minimum noise generation and tenderers with be held to their noise level guarantees. All fan fixing to be done with rubber washers or vibration mounts to prevent structure noise transference. We need to also note and incorporate the attenuation

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measures recommended by the acoustic consultant for the building noting in particular that the central plant/crusher area will have the highest noise generation sources (crushers and tipping FELS). Any tipping chutes are to be rubber lined.

Yours faithfully

Gerry F. Kuhn (FMVS, MSAIOH, Grad SE) Finalised on 04/06/2015 and revised on 22/11/2015 Attachment – Drawing GKO 696 and GKO 795