Table 3.

Groundwater concentrations (µg l−1) within 2 m of house August 2013 to March 2015

BH1BH2BH3BH4BH5
August 2013
Phenol<0.5<0.5<0.56700043000
Naphthalene<0.01876516002600
Benzene<1.0192010501780019200
Toluene<1.012.72.443604880
Ethylbenzene<1.07.9<1.066.276.6
m&p-xylenes<1.027.689.79301030
Trichloroethenenanananana
Tetrachloroethenenanananana
September 2013
Phenol<0.5<0.5<0.5150000120000
Naphthalene<0.01340150025002700
Benzene<1.0<1.09303100027900
Toluene<1.0<1.026867906470
Ethylbenzene<1.01.815.161.169
m&p-xylenes<1.012.2176813894
Trichloroethene<1.0<1.0<1.0<1.0<1.0
Tetrachloroethene<1.0<1.0<1.0<1.0<1.0
July 2014
Phenol<0.589019001600007700
Naphthalene<0.01260900580250
Benzene<1.0390049004090019000
Toluene<1.015.480194802220
Ethylbenzene<1.015.852.114481.5
m&p-xylenes<1.055.53941650826
Trichloroethene<1.0<1.0<1.0<1.0<1.0
Tetrachloroethene<1.0<1.0<1.0<1.0<1.0
March 2015
Phenol<0.553130370003800
Naphthalene0.19220180012001300
Benzene<1.0443213063406420
Toluene<1.09023911420978
Ethylbenzene<1.013.853.738.791
m&p-xylenes<1.043.4430452991
Trichloroethene<1.0<1.0<1.0<1.0<1.0
Tetrachloroethene<1.0<1.0<1.0<1.0<1.0
Average*
Phenol0.5*24051010000044000
Naphthalene0.06230110015001700
Benzene1.0*160023002400018000
Toluene1.0*23037055003600
Ethylbenzene1.0*10307880
m&p-xylenes1.0*35270960940
Trichloroethene1.0*1.0*1.0*1.0*1.0*
Tetrachloroethene1.0*1.0*1.0*1.0*1.0*
Average groundwater depth (mbgl)1.71.71.82.01.8

*Mean calculation includes detection limit values; values with an asterisk indicate detection limit. Mean used for illustrative purposes. Values to two significant figures.

na, not available.