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Our environmental performance

Carbon footprint

  2012
2013 2014
2015
Process emissions (kgCO2/ t) 5.12
5.55
6.31
6.18
Transport emissions(kgCO2/ t) 4.62
3.13
3.07
3.02
Total emissions (kgCO2/ t) 9.74
8.62
9.38
9.20

Energy usage

  2012 2013 2014
2015
Gas usage (MWh) 195,543 217,067 281,295
256,695
Electricity usage (MWh) 156,122 159,659
156,022
158,653
Liquid fuel - all grades (MWh) 658,965 606,616
579,652
587,117

Water usage

  2012 2013 2014
2015
*Discharge - surface m3 107,099,461 106,692,584
106,665,939
100,040,459
*Discharge - sewer m3 258,611
258,611
230,506
230,506
Quarry dewatering    16,843,623  19,648,688
16,943,259 
**Abstracted water m3 5,320,500 2,474,436
3,406,072
2,499,924
Grey water m3 808,772
808,390
725,178
761,202
Mains (potable) water m3 545,959  584,628
612,699
628,413 
Consumption - total m3 6,720,231 3,867,454
4,743,949
3,889,539

*Our water discharge figures are reported as the maximum consent allowed. We do not meter the actual discharge from each site, although we are confident that it is well below the maximum allowed.

**Our abstracted water includes dewatering as part of the dredging process.

Waste management

  2012 2013 2014
2015
Total waste to landfill (tonnes) 13,555 7,522*
1,388
2,082
Total waste recovered (tonnes) 1,127 8,964
1,322
1,716
Total waste recycled (tonnes) 93,559 125,838
104,832
104,683
Total waste produced (tonnes) 108,241 142,324
107,542
108,481

*As a comparison the UK RMX Industry average for disposal to landfill is 0.44kg/m3 for AI RMX it is 0.05kg/m3. Source (Ready Mix Concrete Resource Efficiency Action Plan)

 

Packaging used

  2012 2013 2014
2015
Total packaging used (tonnes) 11,896 13,771
12,822 15,783

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