26 
LITERATURE CITED 
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D in this Addendum. 
Environmental Systems Research Institute (ESRI). 2007. ArcGIS 9.2. Redlands, CA. 
Maryland Department of Natural Resources. 2008. Water Clarity Calculation SOP 2008. 
Tidewater Ecosystem Assessment, Annapolis, MD. 
U.S. Environmental Protection Agency. 2003a. Ambient Water Quality Criteria for Dissolved 
Oxygen, Water Clarity and Chlorophyll a for the Chesapeake Bay and Its Tidal Tributaries 
(Regional Criteria Guidance). April 2003. EPA 903-R-03-002. Region III Chesapeake Bay 
Program Office, Annapolis, MD. 
U.S. Environmental Protection Agency. 2003b. Technical Support documentation for identi¬ 
fication of Chesapeake Bay designated uses and attainability. October 2003. EPA 
903-R-03-004. Region III Chesapeake Bay Program Office, Annapolis, MD. 
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chapter iv 
Refinements to Procedures for Assessing Chesapeake Bay Water Clarity and SAV Criteria 
