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List of Appendices 1. Site Map showing ambient dust monitoring locations 2. Laboratory Report 3. Dust Pot Observations on Collection 4. Weather Conditions
Prepared by: Q.E.D. Engineering Ltd, M-TEK Building I, Armagh Road, Monaghan Tel: 047 72060, Fax: 047 72060
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1. Introduction Ambient Dust levels were measured at KMK Metals Recycling Ltd, Cappincur Industrial Estate, Daingean Road, Tullamore, Co Offaly from the 12th May to the 12th June 2017 by Q.E.D. Engineering Ltd, as part of the company’s Waste Licence No. W0113-04, Schedule C.6. A total of four locations were set up for the annual dust monitoring. A map showing the ambient dust monitoring locations is provided in Appendix 1. All monitoring locations were defined in the licence W0113-04 in Schedule C.6.
2. Methodology and Instrumentation Ambient dust monitoring was carried out by Anthony Meehan, BSc in Environmental Science & Technology, of Q.E.D Engineering Limited, using the following method; Standard method VDI 2119 (Measurement of Dustfall, Determination of Dustfall using Bergerhoff Instrument (Standard Method) German Engineering Institute). Prior to going on-site, the collecting pots and lids were cleaned thoroughly with DECON 90 cleaning solution and rinsed with distilled water. The lids were then placed on the pots and the site name and date were marked onto the pots. The Bergerhoff dust gauges were set up on the site on the 12th of June 2017. Four gauges were put in place, in the following locations;
Ref. No. Location A2-1 E yard at wall of northern boundary A2-2 Eastern boundary inside wall A2-3 Fence at southern boundary A2-4 Fence at western boundary
The Bergerhoff dust gauges were left at the site for 31 days and removed on 12th of June 2017. Met data for the period of monitoring was obtained from Gurteen Agri College, 42km distant, from Met Eireann data. The collection pots were sent for analysis to BHP which is an INAB accredited Laboratory. The determination of total dust precipitation was calculated following the stages stipulated in VDI 2119. Results are compared to a limit value of 350mg/m2/day, as stipulated in licence W0113-04 in Schedule C.6.
Prepared by: Q.E.D. Engineering Ltd, M-TEK Building I, Armagh Road, Monaghan Tel: 047 72060, Fax: 047 72060
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3. Results
The total dust precipitation obtained at each location is provided in Table 1.0 and the results for metal content in the same samples is provided in Table 2.0. The laboratory report is included in Appendix 2. Visual observations on collection of dust pots are noted in Appendix 3 on the day of collection. Details of weather conditions during the monitoring period are provided in Appendix 4, which show that there were 9 days with no rain during the monitoring period and 5 days with <1mm of rain. The average wind strength was 6.78 knots which based on the Beaufort Scale of Wind Force could be classified as a wind force of 3 (Gentle Breeze) i.e. leaves and small twigs in constant movement. In addition, there were 17 recorded wind speeds greater than average for the period. The May 2016 Met Eireann summary report showed monthly mean air temperatures were above their Long-Term Average (LTA) across the country. And were the highest since May 2012. The majority of monthly rainfall totals across the country were below their Long-Term Average (LTA). Monthly mean wind speeds ranged from 5.6 knots (10.4 km/h) at Moorepark (Fermoy), Co. Cork to 12.2 knots (22.6 km/h) at Mace Head, Co. Galway. There were no days with gales, strong gales or storms reported this month. Monthly mean wind speeds ranged from 5.6 knots (10.4 km/h) to 12.2 knots (22.6 km/h) which on the Beaufort Scale of Wind Force could be classified as between wind force 2 (light breeze) and 4 (moderate breeze). There were no days with gales, strong gales or storms reported this month. Weather conditions can have a noticeable impact upon dust creation and dust entrainment in the air. Rain falling on the site will dampen down dust generated and drier weather will increase the ambient dust on the ground and will lighten small particles. Wind strength will determine the size of particles that can be entrained in the air and the distance they can be transported.
Prepared by: Q.E.D. Engineering Ltd, M-TEK Building I, Armagh Road, Monaghan Tel: 047 72060, Fax: 047 72060
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4. Discussion Dust monitoring was carried out between the 12th of May and the 12th of June 2017. The period of monitoring was a typical operational month at the site, with settled wind conditions, above average temperatures and below average rainfall, when compared to Long Term Average’s. These climatic conditions were favourable for dust creation and movement. From the results of dust monitoring conducted in May/June 2017, all dust monitoring locations at KMK Metals Recycling Ltd. except for A2-1 were below the EPA limit value of 350 mg/m3/day. Previous dust monitoring at the site has also resulted in the highest levels being recorded at this location. The E yard area sees a significant amount of HGV traffic as vehicles weigh-out over the weighbridge through the yard. The yard is also used for skip drop off and collection and by forklifts when transporting WEEE components to storage areas. This regular movement of vehicles rises dust which otherwise is not obviously noticeable on the yard. The site keeps the E yard area in a tidy state and the yard is swept frequently to maintain a clear thoroughfare for vehicles. In addition, the predominant wind direction in the area is from the south west, which will blow dust in the direction of dust monitoring location A2-1. The industrial estate in which the site is located also experiences other commercial users with traffic and deliveries and therefore is accustomed to a commercial/ industrial environment. Furthermore, there are no dwellings or other sensitive locations in the immediate vicinity of the site.
Analysis of the metal content in the four dust deposition samples was also carried out. There are no Emission Limit Values specified for the metals content in the licence. Results of metal sampling show that all metals in the dust samples collected are relatively low except for sampling location A2-1 which had higher iron levels (15.12mg/m2/day). This result can be explained by higher levels of total dust precipitation at the same sampling location.
Prepared by: Q.E.D. Engineering Ltd, M-TEK Building I, Armagh Road, Monaghan Tel: 047 72060, Fax: 047 72060
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5. Conclusion Dust monitoring was carried out at KMK Metals Recycling Ltd. between the 12th of May and the 12th of June 2017. Dust levels at monitoring location A2-1 were above the EPA limit value of 350 mg/m3/day. Dust monitoring location A2-1, which is situated in the E yard area on the northern boundary adjacent to the car park sees a significant amount of traffic, skip drop offs and the transporting of WEEE components to storage areas. In addition to the existing regime of sweeping up and controlling visible debris, KMK Metals Recycling Ltd. may need to increase dampening during dry weather; a combination of dampening and sweeping should ensure that the ambient dusts at this location improve to within licence limits. Site management should monitor weather conditions and adjust the dust mitigation procedures in place in line with forecasted weather events. All other dust monitoring locations at KMK Metals Recycling Ltd. were below the EPA limit value of 350 mg/m3/day
Prepared by: Q.E.D. Engineering Ltd, M-TEK Building I, Armagh Road, Monaghan Tel: 047 72060, Fax: 047 72060
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