1. Hydrogeologic framework, hydrology, and refined conceptual model of groundwater flow for coastal plain aquifers at the Standard Chlorine of Delaware, Inc. superfund site, New Castle County, Delaware, 2005-12 Author/Creator: Brayton, Michael J., author Publication/Creation: Reston, Virginia : U.S. Department of the Interior, U.S. Geological Survey, 2015 Resource Type: Book Access & Availability: Loading