The phrase "a scheme that could" is correct and usable in written English.
It can be used when discussing a plan or proposal that has the potential to achieve a certain outcome or effect.
Example: "The researchers presented a scheme that could revolutionize renewable energy production."
Alternatives: "a plan that might" or "a strategy that has the potential to".
But others regard it as a scheme that could irreparably damage the world heritage site.
But instead of despairing, Russell comes up with a scheme that could have been conceived only in the 1980's.
This is a very strong statement, and it is difficult to conceive of a scheme that could be so safe as to exclude any possibility of unauthorised disclosure.
Councillors had put together a scheme that could have left homeless people facing criminal prosecution and a fine of up to £1,000 if they were caught sleeping in the open air.
Over the past five years, the government has repeatedly chosen not to give the green light to a scheme that could have protected over 400 homes in the area, as the Guardian has highlighted.
The English Premier League's plan for its 20 teams to play an extra league game outside England, a scheme that could be dubbed Plan 39 from Outer Space, gained a grain of support Monday.
That something is an idea that Lowe sketched out on a napkin over dinner in Dubai a quarter of a century ago: a private scheme that could expand Heathrow and break the impasse between the needs of airlines and business and public hostility over a third runway.
CooperCity analyst Louise Cooper suggested big investors had decided to express derision following a recent showdown over a bonus scheme that could have handed Ashley £72m of free shares.
Prisoners are being allowed to smoke e-cigarettes as part of a pilot scheme that could lead to a jail smoking ban.
Paul et al. (2014) proposed a new scheme that could lead to an energy-efficient Bitcoin.
Its president, Lin Yi Chong, said Swansea Bay Tidal Lagoon was a "pioneering scheme that could bring the world a new energy option, as the cornerstone project in our business development strategy in the UK and wider Europe".
