November 2004 (PDF 11.6 MB) - Barrick Gold Corporation

Table E8. Default values for temperature gradient and wind speedClassification(site characteristics)Default temperature inversionin winterAll areas Pasquill class E—1.5°C/100 m with maximum5 m/s wind speed at 10 mAll areas Pasquill class F—3°C/100 m with maximum2 m/s wind speed at 10 mNon-arid areas Pasquill class G—4°C/100 m with maximum3 m/s wind speed at 10 mArid and semi arid areas Pasquill class G—8°C/100 m with 1 m/s windspeed at 10 mPercentage occurrence of stabilitycategories during the winter periodTo be excluded from the calculation, as it is notconsidered significant enough.≥ 30 per cent occurrence at night during thewinter period≥ 30 per cent occurrence at night during thewinter period≥ 30 per cent occurrence at night during thewinter periodE7ReferencesIrwin J.S. (1980), Dispersion Estimate Suggestion #8:Estimation of Pasquill Stability Categories. US EPAResearch, Triangle Park NC. (Docket ReferenceNumber ii-B-33).Mitchell A.E. & Timbre K.O. (1979), AtmosphericStability Class from Horizontal Wind Fluctuations.Presented at 72 nd Annual Meeting of Air PollutionControl Association, Cincinnati, OH, June 24–29(Docket Reference Number II-P-11).NRC (1972), Meteorological Programs in Support ofNuclear Power Plants, Regulatory Guide (Draft). USNuclear Regulatory Commission, Office of StandardsDevelopment, Washington DC.Quality Applications. Standards Australia, Sydney,ISBN 0 7262 4556 9.Turner D.B. (1964), ‘A diffusion model for an urbanarea’, Journal of Applied Meteorology, vol 3(1), pp. 83–91.US EPA (1980), Ambient air monitoring guidelines forprevention of significant deterioration (PSD). Publicationno. EPA–450/4-80-012, US EPA, ResearchTriangle Park, NC. (NTIS Number PB 81–153231).US EPA (1987), On-site meteorological program guidancefor regulating modelling applications. Publicationno. EPA-450/4-87-013, US EPA, Research TrianglePark, NC.Pasquill F. (1961), ‘The estimation of dispersion ofwindborne material’, Meteorological Magazine, vol.90 (1063), pp. 33–49.Smedman-Hogstrom A & Hogstrom V. (1978), ‘Apractical method for determining wind frequencydistributions for the lowest 200 m from routinemeteorological data’, Journal of Applied Meteorology,vol 17(7), pp. 942–53.Smith T.B. & Howard S.M. (1972), ‘Methodology fortreating diffusivity’, MRI 72 FR-1030, MeteorologicalResearch Incorporated, Altadena, CA. (DocketReference Number II-P-8).Standards Australia (1987), AS 2923–1987, AmbientAir—Guide for Measurement of Horizontal Wind for AirNSW industrial noise policy84