The phrase "a new plan which" is correct and usable in written English.
It can be used when introducing a specific plan that is being described or elaborated upon.
Example: "The committee has proposed a new plan which aims to improve community engagement and participation."
Alternatives: "a new strategy that" or "an updated proposal which".
"There is new management and a new plan, which is more ambitious than the previous one".
With the emergence of a political accord, the Iraqi military began to develop a new plan, which American officers learned about late last week.
On Wednesday, when the reshuffled Greek government presents its creditors with a new plan, which will certainly include a call for debt relief, Merkel and her colleagues have an opportunity to embark on a new path.
Voilà: A new plan, which should win city approval shortly, would give Pier 6, off Atlantic Avenue, a flowering meadow with seasonal grasses, a sprawling field and a triangular wooden viewing platform.
Eventually, Mr. Trump's people drew up a new plan, which won more praise from the architectural world, but many doubts from other developers and those who finance buildings here, because of its high prices.
The prospect of a new plan, which emerged during a weekend of meetings of world leaders in Washington and after some urging by the United States, seemed to represent a realization that Europe had to do something to bring itself back from the brink.
But Mr. Duncan was already convinced of the need for direct intervention in many failing schools, and the business group's proposal helped shape a sweeping new plan, which Mayor Richard M. Daley announced in June.
I will put forward an amazing new plan, which will include many reforms, such as letting people buy insurance across state lines, increasing choice and competition, and bargaining for better, cheaper drug prices".
It has set off a frenzy of concerns that the new plan, which would only require partial closures at nights and on weekends, is untested and half-baked.
A new programme which plans to give viewers a far greater role in the BBC's story-telling process, is due to launch on BBC World News television on 17 February.
Over a year ago, Gov. Chris Christie and Triple Five announced plans for a new design, which would eventually expand to 7.5 million square feet.
