With the clock ticking to find a buyer for the West Marin Pharmacy, the Good Luck Fund and Petaluma Health Center have devised a contingency plan to ensure that West Marin residents will have convenient access to medications even if the pharmacy closes.

Its license expires at the end of October, and its owners, Zsuzsanna Biran and Jason Yoon, have yet to find a buyer willing to pay their asking price. The couple rebuffed an…