The Case of the Toxic Spell Dump

David Fisher, an EPA (Environmental Perfection Agency) bureaucrat, was not the stuff of which heroes are made. At least he hoped not. All he wanted was a good life with a good wife, and a chance to do his bit for society reviewing magical impact statements (like the one that assesses the effect on local non-life resulting from the introduction of leprechauns into Southern California, for example) and ensuring that various manufacturers of magical devices did not intentionally or otherwise foul the environment with the sorcerous by-products of their trade.
Indeed it would be hard to imagine a more regular and down to earth soul than that of David Fisher of the EPA. No hero he!Then one day David received a call from Washington to investigate a certain Toxic Spell Dump, and suddenly he is up to his neck in skullduggery and magic most foul. Some ancient deity, it seems, is attempting to reopen for business in the L. A. Basin, complete with human sacrifice (open up their hearts and let the sun shine in!) and the destruction of Western Civilization.
All that stands in the way is David Fisher - and he's no hero. Until he has to be.