Associated Press: An Attleboro manufacturer will pay $2.3 million to settle allegations it broke state pollution laws in the second largest environmental protection settlement in Massachusetts history, Attorney General Martha Coakley’s office announced Tuesday. The chemical plant, owned by Somerset, N.J.-based Zinsser Co. Inc., makes a range of materials used in the production of everything from pharmaceuticals to varnish. The state accused it of inaccurately reporting its emissions of certain …