1. PCB Impairment Assessment/ Conceptual Model
Jay Davis
SFEI
CEP-funded IA/CM report just beginning, but we already have…
Draft PCB TMDL Project Report
RMP mass budget work
Food web modeling providing linkage
The following are preliminary thoughts on content of the IA/CM report
Illustrations by Steve Curtis

2. IMPAIRMENT INDICATORS FOR PCBS

3. TRENDS AND PREDICTIONS FOR PCBS
50% decline in the past 20 years
Load reductions are predicted to accelerate recovery significantly
Predicted change in mass over time
Year 10 20 30 40 50 60 70 80 90
100
We are here
We want to be here
20 kg
0 kg
40 kg

4. Delta Outflow

5. Nonurban runoff

6. Dredging

7. Effluents

8. Contaminated Sites

9. Buried Sediment

10. Urban Runoff

13. Your feedback is encouraged
Draft report in July