HC Deb 18 June 1996 vol 279 cc397-9W
Mr. Nigel Evans

To ask the Secretary of State for the Environment what was the level of heavy metals in cemfuel when tested at Ribblesdale, Clithero, in October 1994. [32823]

Coal only November 1994
Substance Stack cone mg/m3 STP Stack cone mg/m3 actual Mass flow mg/s MGLC µ/m3 (x1000) EQS or EAL µ/m3 EQ (air) (x100)
NOx 1216 665 119,737 836 83.3 1.0038
SO2 1274 697 125,448 876 80 1.0950
particulate 47 25.7 4,628 32 80 0.0404
HF 0.19 0.1 18.7 0.1306 6.5 0.002
HCl 76 41.6 7484 52.26 7 0.7466
CO 247 135.1 24322 169.8 550 0.0309
NH3 3.83 2.1 377 2.634 170 0.0015
Pb 0.221 0.12 21.8 0.152 2 0.0076
Cr(III) 0.085 0.047 8.37 0.0584 5 0.0012
Cr(VI) 0.000255 0.0001 0.02 0.0001 0.01 0.00010
Mn 0.018 0.01 1.76 0.0123 50 0.0000
Ni 0.038 0.02 3.74 0.0261 10 0.0003
EQ(air)x100 2.9293
EQ(air) 0.0293

Table 6.3: Cemfuelµ November 1994
Substance Stack cone mg/m3 STP Stack cone mg/m3 actual Mass flow mg/s MGLC µ/m3 (x1000) EQS or EAL µ/m3 EQ (air) (x100)
NOx 1212 662 119,147 832 83.3 0.9988
SO2 1311 717 129,092 901 80 1.1269
particulate 72 39.4 7,090 50 80 0.0619
HF 0.15 0.082 14.8 0.1 6.5 0.0016
HCl 26 14.2 2,560 18 7 0.2554
CO 459 251.1 45,197 316 550 0.0574
NH3 6.7 3.7 660 4.6 170 0.0027
Pb 0.340 0.19 33.48 0.23 2 0.0117
Cr(III) 0.539 0.3 53.10 0.37 5 0.0074
Cr(IV) 0.0016 0.001 0.18 0.001 0.1 0.0010
Co 0.01 0.006 1.08 0.008 0.2 0.0040
Cu 0.008 0.004 0.72 0.005 2 0.0003
Mn 0.062 0.034 6.12 0.043 50 0.0001
Ni 0.348 0.19 34.2 0.24 10 0.0024

Mr. Clappison

The concentrations of heavy metals in two samples taken during these trials are on the public register and were as follows.

Metal Sample M1348, mg/kg Sample 1349, mg/kg
Cadmium 4.3 4.57
Thallium 0.05 0.05
Mercury 0.05 0.05
Antimony 20 16.7
Arsenic 1.02 0.05
Chromium 55 39
Cobalt 2.11 2.66
Copper 48 46
Lead 186 157
Manganese 28 18.2
Nickel 7.3 2.19
Tin 0.05 0.05
Vanadium 4.22 2.6

Mr. Evans

To ask the Secretary of State for the Environment what were the environmental values given to each of the individual emissions from burning cemfuel at Castle Cement, Clitheroe; and which increased as compared to burning coal. [32835]

Mr. Clappison

The attached tables show the emissions when burning coal or coal plus cemfuel, the environmental assessment level values and the calculated environmental quotient.

Table 6.3: Cemfuelµ November 1994
Substance Stack conc mg/m3 STP Stack cone mg/m3 actual Mass flow mg/s MGLC µ/m3 (x1000) EQS or EAL µ/m3 EQ (air) (x100)
EQ(air)*100 2.5316
EQ(air) 0.0253

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