
Regular clean-ups will take place at two areas of coastline after asbestos was found.
Plymouth City Council said the "asbestos-containing material" had been found in pieces of concrete at Teats Hill and Clovelly Bay in samples taken from each area.
The authority in Devon noted the concrete containing asbestos posed a low risk to public health and there were no access restrictions to the sites.
It comes four months after "high levels of asbestos fibres" were found in the sand at nearby Mount Batten beach, which followed another discovery at the same location in April 2019.
A council statement said the recent sampling was carried out as part of a series of tests at 10 areas of publicly accessible foreshore along Plymouth's waterfront.
"At Teats Hill beach (off Artillery Place), cement containing chrysotile (white) asbestos was found in one of 14 ground samples taken from the beach," the council said.
"At one of two areas of foreshore at Clovelly Bay in Turnchapel, one of five samples taken showed the presence of cement containing chrysotile asbestos."
The council added asbestos only becomes a risk to long-term health if loose fibres become airborne and are inhaled.
"Subsequent air quality tests at both Teats Hill and Clovelly Bay have not identified any airborne asbestos fibres," the council said.
It said the clean-ups were in line with the approach taken previously at Mount Batten.
The council also said it was in the process of commissioning specialist consultants to carry out further investigations at Mount Batten to "definitively determine the source of the contamination".
The investigations are expected to get under way before the end of next month, with recommendations expected to be made to the council in the spring.
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