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(c) To reduce the risk of operatives being exposed to sewage
spray via prevailing winds.
(d) To reduce as far as possible sewage odours and insect
nuisance at ground level and in the immediate neighbourhood
of the Pumping Station.
The estimated total cost of the work amounted to approximately
£17,000.
Improved Workshop and Messroom Accommodation. Designs for
improvement and extension of Workshop and Messroom facilities were
prepared, at an estimated cost of £21,193, subject to approval by the
Ministry of Housing and Local Government.
Electricity Supply to Pumping Station. All the main pumping
units and equipment, approximately 2,000 b.h.p., are electrically driven,
and sewage flow arriving at the Station has to be lifted 30ft. before
it can be disposed of to the London County Council storm tanks and
the river, there being no alternative method of dealing with this flow.
In order to prevent breakdowns and obviate extensive flooding,
and with a view to safeguarding the security of the Pumping Station,
provision was made for a supply of 1,000 K.V.A. from the London
Electricity Board, together with the attendant high tension and low
tension switchgear and a 600 K.V.A. transformer.
Flooding of Streams.— No serious flooding of streams occurred
during the year.
Pollution of Streams. Appreciable pollution of the Mayes Brook
occurred. The pollution was principally caused from the works of
two large firms in the Chadwell district, one through an accident in
the works which permitted a large amount of oil to enter the surface
water system. Investigations were instituted in an attempt to prevent
further pollution."