174 attributed to diesel consumption. For ODP and EP-freshwater indicators, at least 40% of the total impact originated from production processes. Note: In Table 4 and Table 5, the Percentage columns show the contributions of different operations to the total emissions and impacts, respectively. Table 4 – Direct emissions to air per 1 tonne of aggregates produced at the site. Emission s Extraction Material handling Production process Total Value (kg) Percenta ge Value (kg) Percenta ge Value (kg) Percenta ge CO2 4.99E-02 5.67% 8.29E-01 94.33% - 0.00% 8.79E01 NOx 1.33E-03 13.47% 8.56E-03 86.53% - 0.00% 9.90E03 TSP 1.10E-03 0.83% 1.18E-01 88.94% 1.35E-02 10.23% 1.32E01 PM10 5.78E-04 1.30% 3.85E-02 86.65% 5.36E-03 12.05% 4.44E02 PM2.5 5.77E-04 7.84% 4.86E-03 66.09% 1.92E-03 26.07% 7.36E03 Table 5 – Environmental impacts of producing 1 tonne of aggregates produced at the site. Impact indicators Extraction Material handling Production process Total Value Percenta ge Value Percentag e Value Percentag e GWP-total 3.10E-01 21.42% 1.12E+0 0 77.10% 2.15E-02 1.48% 1.45E+0 0 GWP-fossil 3.10E-01 21.73% 1.10E+0 0 76.77% 2.15E-02 1.50% 1.43E+0 0 GWP-biogenic 7.10E-05 1.50% 4.65E03 97.91% 2.81E-05 0.59% 4.74E-03 GWP-LUC 2.12E-03 12.91% 1.43E02 87.03% 1.01E-05 0.06% 1.64E-02 ODP 7.98E-13 21.73% 8.80E13 23.95% 2.00E-12 54.32% 3.67E-12 AP 2.69E-03 33.71% 5.24E03 65.62% 5.37E-05 0.67% 7.99E-03 EP-freshwater 8.14E-07 15.99% 2.10E06 41.32% 2.17E-06 42.69% 5.09E-06 EP-marine 1.02E-03 28.81% 2.51E03 70.91% 9.75E-06 0.28% 3.54E-03 EP-terrestrial 1.35E-02 32.47% 2.79E02 67.30% 9.90E-05 0.23% 4.15E-02 POCP 2.53E-03 27.09% 6.74E03 72.20% 6.59E-05 0.71% 9.34E-03
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