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96
Environmental Health
Smoke Microgrammes per Cubic Metre
CLEAN AIR
Measurement and Investigation of Atmospheric Pollution
Seven stations to measure the daily volume of smoke and sulphur dioxide are maintained in the
Borough.
The table on page 97 shows the monthly averages of smoke and sulphur dioxide content in the
air for each station.
The records of the monthly smoke averages for January and June for the stations West Mead
Clinic and Grange Park School over the last seven years are set out below.
Grange Park School has been situated in a smoke control area since 1960 and is now surrounded
by other smoke control areas. West Mead Clinic is situated in a smoke control area that became
operative in 1968, and there is only one other smoke control area in operation in that neighbourhood.
A ten acre square with the station as a centre point sited at Grange Park School includes 123 houses
and 8 other properties; at West Mead Clinic it includes 122 houses and 2 other properties. The monthly
records clearly indicate that in Summer the smoke levels at both stations are identical, but in Winter
the pollution at West Mead Clinic is much worse than at Grange Park School, giving an indication
of the success of the smoke control programme.