2019 Long-Term Environmental Monitoring Program Results Austin - PowerPoint PPT Presentation

2019 Long-Term Environmental Monitoring Program Results Austin Love Prince William Sound Regional Citizens’ Advisory Council May 2020

Photo by William B. Driskell

Photo by David Janka

Port Valdez Blue Mussel Hydrocarbon Trends 100000 All sites tanker spill AMT-B 10000 GOC-B diesel spill JAP-B TPAH ng/g dry wt 1000 100 10 7 3 3 1 Apr-92 Apr-94 Apr-96 Apr-98 Apr-00 Apr-02 Apr-04 Apr-06 Apr-08 Apr-10 Apr-12 Apr-14 Apr-16 Apr-18 Apr-20

TPAH ng/g dry wt 10000 1000 100 10 1 Apr-92 Port Valdez Sediment Hydrocarbon Trends Jun-93 Aug-94 Oct-95 Dec-96 Feb-98 Apr-99 Jun-00 Aug-01 Oct-02 Dec-03 Feb-05 Apr-06 Jun-07 Aug-08 Oct-09 Dec-10 Feb-12 Apr-13 Jun-14 Aug-15 GOC-S AMT-S Oct-16 Dec-17 Feb-19 44 66 Apr-20

ng/L 10 12 14 16 0 2 4 6 8 N N1 N2 N3 N4 AY AE Avg Saw Island 2016 F F1 F2 F3 A0 P PA1 PA2 PA3 Port Valdez Passive Sampling Device Hydrocarbon Trends D D1 D2 FL PYR FP1 RET BAF BBF BCF BAA CDP TRI C ng/L 10 15 20 25 0 5 N N1 N2 N3 N4 ACY ACN F F1 F2 F3 F4 ANT PHN PA1 SI02-17 PA2 PA3 PA4 DBT DBT1 DBT2 DBT3 DBT4 FL P FP1 C C1 C2 C3 C4 BAA BBF BKF BEP BAP PER IP DAHA BGHIP ng/L 10 0 1 2 3 4 5 6 7 8 9 N N1 N2 N3 N4 ACY ACN F F1 F2 F3 F4 ANT PHN SAW 01-18 PA1 PA2 PA3 PA4 DBT DBT1 DBT2 DBT3 DBT4 FL P FP1 C C1 C2 C3 C4 BAA BBF BKF BEP BAP PER IP DAHA BGHIP ng/L 10 15 20 25 0 5 N N1 N2 N3 N4 ACY ACN F F1 F2 F3 F4 ANT PHN SAW 01-19 PA1 PA2 PA3 PA4 DBT DBT1 DBT2 DBT3 DBT4 FL P FP1 C C1 C2 C3 C4 BAA BBF BKF BEP BAP PER IP DAHA BGHIP

Valdez Marine Terminal Ballast Water Deliveries 8,000,000 ATC OSG Polar SeaRiver Annual Volume of Oily Ballast 7,000,000 6,000,000 Delivered (Barrels) 5,000,000 4,000,000 3,000,000 2,000,000 1,000,000 0 2014 2015 2016 2017 Year

KEY POINTS Oil concentrations in Port Valdez: • mussels are low, practically non-detectable • sediments are low, but still show signs of the Valdez Marine Terminal • water column are low, below any known toxic levels for marine organisms Current overall low trends are based on a number of factors: • reductions in oily ballast water deliveries • efficient operation of the Ballast Water Treatment Facility