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9/18/18 Photo - Tom Kuckertz, 9/3/2003 Dissolved Discharge Gravity Air Biological Air to Port Separation Stripping Treatment Floatation Valdez 2

9/18/18 Photo - Tom Kuckertz, 5/18/2012 Photo - Austin Love, 8/27/2018 3

9/18/18 Photo - Tom Kuckertz, 7/7/2011 Photo - Tom Kuckertz, 5/4/2011 4

9/18/18 Photo - Tom Kuckertz, 5/4/2011 Photo - Austin Love, 8/27/2018 5

9/18/18 Photo - Austin Love, 07/09/2016 Dissolved Discharge Gravity Air Biological Air to Port Separation Stripping Treatment Floatation Valdez 6

9/18/18 12.0 10.0 Flow (Million Gallons Daily, MGD) 8.0 6.0 4.0 2.0 0.0 1 4 7 0 1 4 7 0 1 4 7 0 1 4 7 0 1 4 7 0 1 1 1 1 1 - - - - - - - - - - - - - - - 3 3 3 4 4 4 5 5 5 6 6 6 7 7 7 - - - - - 3 4 5 6 7 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 2 2 2 0 2 2 2 0 2 2 2 0 2 2 2 0 2 2 2 0 2 2 2 2 2 Date (Year-Month) Monthly Avg. Daily Max. Monthly Avg. Limit Daily Max. Limit Sources: Alyeska Pipeline Service Company, U.S. EPA ECHO Portal 8,000,000 Annual Volume of Dirty Ballast Delivered (Barrels) 7,000,000 ATC OSG Polar SeaRiver 6,000,000 5,000,000 4,000,000 3,000,000 2,000,000 1,000,000 0 2014 2015 2016 2017 Year Sources: Alyeska Pipeline Service Company 7

9/18/18 1.0000 TAH Concentration (mg/L; note logarithmic scale) 0.1000 0.0100 0.0010 1 4 7 0 1 4 7 0 1 4 7 0 1 4 7 0 1 4 7 0 - - - 1 - - - 1 - - - 1 - - - 1 - - - 1 3 3 3 4 4 4 5 5 5 6 6 6 7 7 7 - - - - - 1 1 1 3 1 1 1 4 1 1 1 5 1 1 1 6 1 1 1 7 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 2 2 2 0 2 2 2 0 2 2 2 0 2 2 2 0 2 2 2 0 2 2 2 2 2 Date (Year-Month) Monthly Avg. Daily Max. Monthly Avg. Limit Daily Max. Limit Sources: Alyeska Pipeline Service Company, U.S. EPA ECHO Portal 45.00 40.00 35.00 TAqH Concentration (ug/L) 30.00 25.00 20.00 15.00 10.00 5.00 0.00 1 4 7 0 1 4 7 0 1 4 7 0 1 4 7 0 1 4 7 0 - - - 1 - - - 1 - - - 1 - - - 1 - - - 1 3 3 3 4 4 4 5 5 5 6 6 6 7 7 7 - - - - - 1 1 1 3 1 1 1 4 1 1 1 5 1 1 1 6 1 1 1 7 0 0 0 1 0 0 0 1 0 0 0 1 0 0 0 1 0 0 0 1 2 2 2 0 2 2 2 0 2 2 2 0 2 2 2 0 2 2 2 0 2 2 2 2 2 Date (Year-Month) Instantaneous Max. State Limit Sources: Alyeska Pipeline Service Company, U.S. EPA ECHO Portal 8

9/18/18 Biological Ultraviolet Discharge to Treatment Disinfection Port Valdez 9

9/18/18 Photo - Austin Love, 8/27/2018 Photo - Austin Love, 8/27/2018 10

9/18/18 Photo - Austin Love, 8/27/2018 Biological Ultraviolet Discharge to Treatment Disinfection Port Valdez 11

9/18/18 12,000 10,000 Flow (gallons per day) 8,000 6,000 4,000 2,000 0 1 4 7 0 1 4 7 0 1 4 7 0 1 4 7 0 1 4 7 0 - - - 1 - - - 1 - - - 1 - - - 1 - - - 1 3 3 3 4 4 4 5 5 5 6 6 6 7 7 7 - - - - - 3 4 5 6 7 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 2 2 2 0 2 2 2 0 2 2 2 0 2 2 2 0 2 2 2 0 2 2 2 2 2 Date (Year-Month) Avg. Flow Max. Flow Max Flow Limit Sources: Alyeska Pipeline Service Company, U.S. EPA ECHO Portal 7,000 Fecal Coliform Concentration (CFU/100 mL) 6,000 5,000 4,000 3,000 2,000 1,000 0 1 4 7 0 1 4 7 0 1 4 7 0 1 4 7 0 1 4 7 0 0 0 0 1 0 0 0 1 0 0 0 1 0 0 0 1 0 0 0 1 - - - - - - - - - - - - - - - - - - - - 3 3 3 3 4 4 4 4 5 5 5 5 6 6 6 6 7 7 7 7 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 Date (Year-Month) Weekly Avg. Monthly Avg. Daily Max. Month Avg. Limit Daily Max. Limit Sources: Alyeska Pipeline Service Company, U.S. EPA ECHO Portal 12

9/18/18 4 BWTF STP 3 Permit Exceedances 2 1 0 1 4 7 0 1 4 7 0 1 4 7 0 1 4 7 0 1 4 7 0 0 0 0 1 0 0 0 1 0 0 0 1 0 0 0 1 0 0 0 1 - - - - - - - - - - - - - - - - - - - - 3 3 3 3 4 4 4 4 5 5 5 5 6 6 6 6 7 7 7 7 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 Date (Year-Month) Sources: Alyeska Pipeline Service Company, U.S. EPA ECHO Portal 13

9/18/18 70 60 Aqueous PAH Concentration (ng/L) 50 40 30 20 10 0 JAC SAW GOC Location Sources: PWSRCAC LTEMP Program 2016 4,500 Mussel Tissue PAH Concentration (ppb dry weight) 4,000 3,500 3,000 2,500 2,000 1,500 1,000 500 0 VMT GOC PWS Alaska California Oregon Washington Location Sources: PWSRCAC LTEMP Program 2008-2016 data, NOAA Mussel Watch Program 2004-2005 data 14

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9/18/18 Photo - Tom Kuckertz, 9/18/2002 16