1. Massachusetts Water Resources Authority Presentation to MWRA Advisory Board MWRA Residuals Processing & Agreement for Operation and Maintenance of the Fore River Pelletizing Plant with New England Fertilizer Company May 21, 2015

2. Massachusetts Water Resources Authority Residuals Treatment Facilities

3. Massachusetts Water Resources Authority Residuals Processing – Schematic Overview

4. 4 Massachusetts Water Resources Authority Residuals Processing Statistics for Deer Island Sludge to Digestion – 246 dry TPD – 70% as Primary sludge – from gravity thickening – 30% as Waste Secondary sludge – from centrifuge thickening Typical sludge makeup of other plants: 50:50 – Time in Anaerobic Digestion: 18-21 days – 62% Volatile Solids destruction (industry ave. is 50%)

5. 5 Massachusetts Water Resources Authority Residuals Processing Statistics for Deer Island FY14 Annual Avg digester gas production – 188 kscfh – 96% of gas is beneficially used in boilers – 95% of total boiler heat attributable to Digas Value of gas utilization - $21.3M (heat) & $2.3M (power)

6. 6 Massachusetts Water Resources Authority Overview of Current Residuals Processing Sludge to Pellet Plant – 100 dry TPD – On DITP, Digested sludge is stored, then pumped 7 miles to Pellet Plant Methane gas captured, stored, then used in boilers on site – NEFCO dewaters, dries, & pelletizes all digested sludge – All pellets go to beneficial re-use: turf farms golf courses fertilizer blenders cement kiln

7. 7 Average Daily Sludge to Pellet Plant (DTPD)

8. Located in Fore River Shipyard Designed, Constructed & Owned by MWRA – Phase I – $88 M – Phase II - $45 M – Total cost - $133 M Since Day 1, has always been a Contract Operation – Contract 1: 1991 – 2001Competitive Bid – NEFCo – Contract 2: 2001 – 2015Competitive Bid - NEFCo MWRA Pellet Plant located in Quincy, MA 8

9. Current contract - S345 – 15-year (2001-2015) Process liquid sludge from DITP – Receive digested sludge – Dewater with centrifuges – Dry with thermal dryers – Produce Class A Fertilizer Pellet – In CY 2014: Processed 100 dtpd Paid NEFCo $14.1M Pellet Plant – Contract O&M Since 1991 (cont.) 9

10. Contractor is responsible for developing & maintaining Diverse Markets for beneficial reuse for all sludge sent to the Pellet Plant – Land Application – Fertilizer Blenders – Alternate Fuels – Bay State Fertilizer Program Maintain Facility & Equipment – Responsible for returning a fully operable plant at the end of the contract to MWRA. Pellet Plant – Contract O&M Since 1991 (cont.) 10

11. State Annual Tonnage Percentage Connecticut 6,81122% New York 5,67818% Indiana 3,09010% Maine 2,1707% Rhode Island 1,8356% Florida 1,6655% Virginia 1,5545% Massachusetts 1,4395% Georgia 1,3324% Vermont 1,1754% Pennsylvania 1,0253% Ohio 9803% Maryland 9803% Missouri 5902% North Carolina 3281% Michigan 2591% Bagged/truck 1060.3% 11 Pellet Distribution by State

12. 12 Comparison of Pellet Molybdenum Concentrations to DEP Limit

13. Step 1: Condition Assessment Facility is in excellent condition – 20+ year life remaining with no major capital (with continued maintenance) Step 2: Residuals Technology Assessment Recommendations at DITP – May impact quality & quantity of sludge sent to Pellet Plant Recommendations at Pellet Plant – Limited to energy efficiency gains given condition of facility Pellet Plant – Contract Renewal Preparation 13

14. Technology Assessment Recommendations (cont.) – Consider larger, more efficient Dryer Trains Implemented at Philadelphia & soon Detroit – Evaluate impacts of co-digestion programs at DITP – Given long remaining life, any capital expense decisions must rely on payback – Recommend 5-year extension to quantify impacts of pilots and new dryer ops – Suggested next long-term contract – 15 years Pellet Plant – Contract Renewal Preparation Step 2 (cont.) 14

15. Pellet Plant – Existing Contract with NEFCo 15 Current Contract Cost Structure Fixed Fee first 90 dtpd (32,850 dry tons annually) (~$400/ton) Excess Qty >90 dtpd (>32,850 dry tons annually) (~$280/ton) Fixed yearly capital dollar value (pre-determined) No pass-throughs for utilities –Includes adjustments for inflation FY14 Avg - ~$380/ton

16. Pellet Plant – NEFCo Contract Extension 16 Contract Cost Structure – Sludge Processing (changes) Original ContractContract Extension Change Fixed Fee first 90 dtpd annual (32,850 tons/yr)same base price but for 92.5 dtpd Variable Fee >90 dtpd same incremental price >92.5 dtpd CY2014 Total contract expenses $14,090,654 $13,582,354 for sludge processing $13,334,464 if on extension -$12,574,468 base + = same base + - plus $1,007,886 excess qty plus $759,996 excess qty Savings of $247 K in year. + $508,300 capital expenses

17. Pellet Plant –NEFCo Contract Extension – Capital Program 17 Capital Program - $7.0 Million cap $6.087 K – project awards subject for future Board approvals NEFCo designs all capital projects – paid 15% of awarded project NEFCo responsible for capital costs in excess of $7.0 M cap Must return a fully operational plant at end of contract Drum replacement not included in cap if completed.

18. Pellet Plant – NEFCo Contract Extension Summary 18 Reduced Price for Sludge Processing $1.25 M savings over 5-yr extension Revised Capital Program Structure Retains NEFCo liability (must return fully operating plant at end of contract) Extension authorized for 5-years

19. Pellet Plant – NEFCo Contract Extension Summary 19 Provides MWRA sufficient time to: Evaluate potential energy efficiency improvements (large dryer technology) Stabilize future sludge quantities (co-digestion) Allow for increased competition

20. Word of mouth marketing - 32 transactions in April and May Lawn care “enthusiasts” showering praise upon Bay State Fertilizer Marketing Intern started May 18 th – Goal: Expand retail presence 20 Bay State Fertilizer

21. 21 New Bay State Fertilizer Bag – Rita Berkeley

22. Available at no cost MWRA member Communities Pickup at the Pellet Plant in Quincy Contact Carl Pawlowski (617) 773-4295 22 Bay State Fertilizer

23. Massachusetts Water Resources Authority Questions ? 23