... the first three com-perpendicular to the first, contains Graybill and Martin Bridge (Figure 6.9). The 120 REGIONAL SCALE ECOLOGICAL RISK ASSESSMENT INTRODUCTION The risk assessment for Codorus ... R.1234567804 81216Miles Risk Regions L1655_book.fm Page 121 Wednesday, September 22, 2004 10: 18 AM© 2005 by CRC Press LLC 126 REGIONAL SCALE ECOLOGICAL RISK ASSESSMENT September 1998 ... Wilson, V.J., and Landis, W.G.1998. A regional multiple-stressor rank-based ecological risk assessment for the fjordof Port Valdez, Alaska, Hum. Ecol. Risk Assess., 4, 1125–1173.L1655_book.fm...