1. 10/11/20151 Arlington Tanker Truck Rollover May 31, 2013

2. 10/11/20152 Incident Location 188 Medford Street, Arlington

3. 10/11/20153 Initial Notification and Response Timeline Release occurs at approximately 4:15 PM Local Fire Department and Police Resources immediately begin arriving on scene District 2 Hazmat Team called in MassDEP receives first call at 4:25 PM MassDEP Primary ER Responder Dispatched MassDEP FAST Team mobilized State contractor Moran Environmental mobilized

4. 10/11/20154 Initial Notification and Response Timeline (Cont.) PRP Identity Established (JP Noonan) – 4:45 PM JP Noonan contacted immediately Noonan’s Contractor, Clean Harbors, also contacted Volume of oil lost estimated at 10,000 gallons Field reports indicated significant impacts to the Mystic River, call for resources – 5:15 PM MassDEP mobilized Spill Response Trailer and additional personnel – on site at 6:30 PM

5. 10/11/20155 MassDEP Spill Trailer

6. 10/11/20156 Boom Deployment

7. 10/11/20157 Boom Locations 1 2 3 4 5 6 7 89

8. 10/11/20158 Recovery via Drum Skimmer

9. 10/11/20159 Oil Recovery Day 2 Saturday, June 1, 2013

10. 10/11/201510 Oil Migration (compliments of DCR)

11. 10/11/201511 Open Water Skimmer

12. 10/11/201512 Skimmer Touchdown (causes breach in adjacent boom)

13. 10/11/201513 Oil Breach Contained

14. 10/11/201514 Oil Breach Recovery

15. 10/11/201515 Boom Restored to Pre-Breach Condition

16. 10/11/201516 Open Water Boat Skimmer in Operation

17. 10/11/201517 Open Water Boat Skimming Halfway Complete

18. 10/11/201518 Open Water Boat Skimming Complete

19. 10/11/201519 Recovery Results to Date 1,800 gallons of oil recovered within 12 hours 6,000 gallons of oil recovered within 24 hours 7,200 gallons of oil recovered within 48 hours Approximately 1,000 gallons of oil estimated recovered via absorbents/passive recovery Total of 8,200 gallons (or 82% recovery) Assuming 10% volatilization (92% accounted for)

20. 10/11/201520 FAST Mobile Laboratory

21. 10/11/201521 FAST - Air and Water Sampling Locations

22. 10/11/201522 Results of Air Testing Approx. Total Diesel Vapors: – AA-1: 0.3 – 0.4 ppmv – AA-2: 0,2 – 0.3 ppmv – AA-3: Not detected – AA-4: 0.5 – 0.8 ppmv – IA-1: 0.2 – 0.3 ppmv Levels considered safe for short term: 1.5 ppmv

23. 10/11/201523 Results of River Testing Chemical Upstream MidDownstream Benzene ND ND ND Toluene NDND 2 Ethylbenzene ND ND 2 Xylenes ND ND 8 1,3,5-TMB ND ND 3 1,2,4-TMB ND ND 10 (units in ug/L or ppb)