Table 5.

Vapour pathway concentrations (µg m−3) outside the house

Soil vapour
VP1VP2VP3VP4VP5
10 July 2014
Trichloroethene (TCE)<8.1<8.123736.5na
Toluene<5.7<5.7<5.76.4na
Tetrachloroethene (PCE)<10.2<10.2421.9295.1na
m&p-xylenes<6.5<6.5<6.511.7na
o-xylene<6.5<6.5<6.56.9na
27 March 2015
Benzene<4.8<4.8<4.811.5<4.8
Toluene<5.7<5.7969.3<5.7
Ethylbenzene7.4<6.5<6.513<6.5
m&p-xylenes25.6<6.5<6.546.9<6.5
o-xylene9.1<6.5<6.516.9<6.5
16 May 2015
Benzene<4.86.16.4<4.8<4.8
Toluene<5.713.9<5.7<5.7<5.7
Trichloroethene (TCE)<8.1<8.1175.224.2<8.1
Tetrachloroethene (PCE)<10.2<10.2278.8192<10.2
23 June 2015
Benzene617.2<4.85.4<4.8na
Trichloroethene (TCE)<8.1<8.1295.641.9na
Toluene2118.3<5.79.8na
Tetrachloroethene (PCE)<10.217.6614.5421.9na
Ethylbenzene323.9<6.5<6.5<6.5na
m&p-xylenes865<6.5<6.532.6na
o-xylene263.1<6.5<6.519.1na
27 January 2016, cold property
Benzene<4.8<4.821.733.99.9
Trichloroethene (TCE)<8.1<8.1<8.1<8.1<8.1
Toluene<5.7<5.713.2<5.79.4
Tetrachloroethene (PCE)<10.2<10.2<10.2<10.2<10.2
Ethylbenzene<6.5<6.5<6.5<6.519.1
m&p-xylenes<6.5<6.514.8<6.580.3
o-xylene<6.5<6.5<6.5<6.535.2
28 January 2016, after heating property
Benzene<4.8<4.8<4.8<4.8<4.8
Trichloroethene (TCE)<8.1<8.1<8.1<8.1<8.1
Toluene<5.7<5.7<5.7<5.77.5
Tetrachloroethene (PCE)<10.2<10.2<10.2<10.2<10.2
Ethylbenzene<6.5<6.5<6.5<6.518.2
m&p-xylenes<6.5<6.5<6.5<6.5161.1
o-xylene<6.5<6.5<6.5<6.547.8

na, not available.