We're providing this example so you can get a good idea of appropriate length and content. But please put this into your own words! Tips are provided in brackets within the letter, as well as in our overview of LTEs here.
To the editor:
California is defined by its coastline, which provides us with immeasurable serenity and a very measurable economic value. Without a clean and beautiful coast, California would suffer huge losses in tourism, fishing, recreation, and real estate. [Consider replacing this paragraph with something personal about your connection to the ocean or dangers of drilling.]
Offshore drilling and fracking — which President Trump is threatening to revive off California's coast — threatens our vitality. The toxic chemicals used to frack offshore wells harm wildlife and pollute coastal waters. Our political representatives must safeguard our valuable beaches.
I strongly oppose Trump's reckless plan to expanding oil drilling and fracking and urge my fellow Californians to express their opposition as well. This administration would sacrifice the health and safety of Californians for the profit and convenience of the nation's biggest polluters. As a state, we must stand together to resist their oily agenda. [You may have much more to say, but it's best to keep your letter as short as possible.]