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The managements of local food factories, and other business premises,
instead submit to the Public Health Department measures proposed by
their pest contractors; these are indicated on plan, and the work is
supervised.
(2) Private dwellings are treated free of cost.
(3) Sewer treatments are carried out to routine; sewers in one ward
(Hambrough) remaining positive. More work may have to be done on
baiting inspection chambers in the area still within private curtilage
showing "takes."
ATMOSPHERIC POLLUTION
In February, 1949, arrangements were made for two observation points for
the estimation of Sulphur Dioxide by the Lead Peroxide Method (cowl covered)
in the Borough.
(1) North: Expected contaminants from industrial concentration in the
south-west; one mile distant.
(2) South: Isolated from industrial contaminants.
Average results over six months' trial were 49.8 (North) and 55.4 (South)
indicative of a non-industrial area.
To commence 1950; a Deposit Gauge and two lead peroxide points (louvered)
are to be established.
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