Renewable Energy Recovery

& Organics Diversion

Landfill Methane Outreach Program (LMOP) Special Session

SWANA Western Regional Symposium

Reno, Nevada, March 29, 2017

Tim Flanagan General Manager

Presentation Overview

• Summary of MRWMD’s History of Waste Management & Energy Recovery

• Small steps lead to long-term success. • Innovation through partnerships. • Local solutions to local problems. • MRWMD infrastructure for energy

recovery along the path to “zero waste”.

Managing Waste on the Peninsula: Early 1900s

Managing Waste: 1920 - 1955

The MRWMD Today

Serving Northern Monterey County

and Surrounding Communities

MRWMD Today - An Integrated Approach • SS, Mixed Waste, & C & D

MRF

• Recycling Drop-Off

• Buy- Back Center

• Reuse Store

• HHW & E-Waste

• LFG , 1983

• AD Facility, 2013

• Composting

• Public/ Private Partnerships

• Public Education

MRWMD Public Infrastructure for Managing Waste & Resources

• Last Chance Mercantile Reuse Store • Household Hazardous Waste Collection • Drop-off Recycling Center • Material Recovery Facility Upgrade • Dry Anaerobic Digester Pilot Project (5000 tons/year) • Leased Composting Operations • Leased Concrete & Asphalt Concrete Recycling • Leased Fine Aggregate Operations • Community Franchise Truck Yard & Maintenance Facility • CNG Fueling Facility • Monterey Peninsula Landfill • Landfill Gas Renewable Energy • Public Education and Outreach Program

> 2.7 Million Tons Diverted (1995 thru 2016)

Chart1

Green and Wood Waste

Mixed Paper

Metal

Beverage Containers

Cardboard

Last Chance Resale Items

Tires

Mattresses/Carpet and Carpet Pad

Dirt and Inert Material

Sheetrock

Biosolids

Asphalt Roofing Materials

Concrete and Asphalt

Food Waste

ADC

Other/Various

Material

Last Chance Resale

804967.12

2698.35

70260.03

2186.33

9457.79

14543.73

24512.74

3626.7

456156.66

6320.25

466830.875

24052.16

528315.73

20756.43

231194.307

34400.32

95-00

SITE Tonnage1995199619971998199920002001200220032004200520062007200820092010201120122013201420152016Since 1996

Accepted MaterialsMaterialTons

Refuse - Landfill215,230178,923159,038168,688158,450137,862145,038158,995158,114171,505181,868162,789153,612134,664115,968120,777115,070110,374117,182116,869126,842144,9823,037,608Green and Wood Waste804,967

Refuse - Landfill - Regional Waste----13,78229,00514,83150,363153,690139,127213,798204,438250,037314,0341,383,107Mixed Paper2,698

ADC - Regional Waste--------24,40324,56638,17035,79439,99368,268231,194Metal70,260

Asphalt/Concrete21,32021,01414,45916,42418,03215,67820,94415,49016,36116,01618,69219,33514,88312,58728,59725,29424,56036,37930,46025,71031,78737,095459,798Beverage Containers2,186

Dropboxes-Paper/Containers/Metal1,74548222336947336211195492883754956852864174167763353151845346154211,579Cardboard9,458

Food Waste---------------1,3862,2582,4642,8823,5763,6734,51720,756Last Chance Resale Items14,544

Problem Waste2,3502,1395,9579,0948,5796,0476,83311,0817,4277,1337,6118,2588,66610,40010,7416,2583,8543,2674,6074,1593,0723,441138,625Tires24,513

Roofing Material Process----1,348----------------01,348Mattresses/Carpet and Carpet Pad3,627

Sludge13,41510,76731,30527,19030,05030,44336,61140,33037,30541,69640,74138,15040,35741,64831,28829,02126,45027,43921,36812,50625,37322,067642,105Dirt and Inert Material456,157

Tires - Cut/Chipped---40128150835421827032797-2206474,4172,5953,7188,1764,2554,37430,643Sheetrock6,320

Water Treatment Sludge-----62472354975-926791,1222,6222,416-----09,074Biosolids466,831

MRF Accepted Materials13,16644,16473,13384,56592,100132,677131,431126,542138,472134,657139,238131,829113,897118,846110,914111,481107,209100,581102,58899,269101,483111,0982,306,174Asphalt Roofing Materials24,052

Total Accepted Materials267,227257,488284,114306,732309,313324,200342,045354,159358,884372,178388,797361,855345,807348,915315,703348,319462,543447,324535,292510,949586,978710,4198,272,013Concrete and Asphalt528,316

0Food Waste20,756

Diverted Materials0ADC231,194

ADC - Regional Waste--------24,40324,56638,17035,79439,99368,268231,194Other/Various34,400

Direct Loads of Asphalt/Concrete21,32021,01414,45916,42418,03215,67820,94415,49016,36116,01618,69219,33514,88312,58728,59725,29424,56036,37930,46025,71031,78737,095459,7982,700,280-0

Dropboxes-Paper/Containers/Metal1,74548222336947336211195492883754956852864174167763353151845346154211,580

Food Waste---------------1,3862,2582,4642,8823,5763,6734,51720,75634,400

Landfill/Site Diverted---172771,012-1192847065421,7661,170803----04,581

Roofing Material Process----1,348----------------01,348

Sludge Diverted - Granite--1,029------------------01,029

Sludge Diverted - On Site--5,96115,59216,71715,93530,44735,30536,28739,35438,00834,30036,43740,87630,42628,06724,92018,3748,8151,8456,2251,910465,802

Tires - Cut/Chipped---40128150835421827032797-22-6474,4172,3583,2124,2152,7312,13922,180

MRF Diverted Materials14,06928,49243,39050,85859,48783,36184,26279,41487,03890,17586,76480,86469,68772,67366,26866,38774,71870,82472,10868,98169,80376,4561,482,011

Total Diverted Materials37,13449,98865,06283,81696,415116,856136,118131,502140,912146,757144,109135,132121,579128,545127,203122,538155,912155,497156,166140,574154,673190,9272,700,279

00

Landfilled230,093207,500219,052222,915212,898207,345205,927222,657217,972225,421244,687226,723224,228220,370188,500225,781306,632291,827379,127370,376432,306519,4915,571,735

0

Percent Diverted14%19%23%27%31%36%40%37%39%39%37%37%35%37%40%35%34%35%29%28%26%27%7

Percent Diverted - No Sludge15%20%23%24%29%34%35%31%33%32%30%31%28%29%34%30%30%33%29%28%26%27%6

0

0

MRF Tonnage0

MRF - Accepted Materials0

Refuse - MRF-28,23752,92458,11163,383100,73695,50194,995105,30188,37398,03695,77580,89684,06279,12176,80373,54868,00968,26767,90568,05170,4991,618,534

Free Paper/Metal/Tire Lds2562186029191,2601,7031,9961,3201,1061,14292884078036427924721420120215313820014,811

Wood/Greenwaste12,91015,70919,60725,53627,45730,23733,93430,22732,06545,14240,27535,21432,22134,42031,51434,43033,44832,37134,11931,21033,29440,400672,829

Total MRF Accepted Materials13,16644,16473,13384,56592,100132,677131,431126,542138,472134,657139,238131,829113,897118,846110,914111,481107,209100,581102,58899,269101,483111,0982,306,173

0

MRF - Diverted Materials0

"Last Chance" Salvage2633115205264894816998871,0251,05595483981471571259764464466065866564914,544

Aluminum/Copper144522104421114274344687169887768333536734

Asphalt/Concrete-1,8552,5913,7034,9665,2133,6693,9614,0773,2673,6804,3813,7753,5191,8981,4982,7252,4592,7332,6872,8383,02568,518

Cardboard Sold993003805996536235626706826295255634413732872773442542703273543469,458

Co-Mingled Containers-3457737387122131145133141115768610695839189152244552,186

Feedstock---285--5882,8935,7793,6432,7631,2797--------017,237

Wood/Greenwaste-2,3864,0463,2085,63310,72310,1218,2547,5295,3855,2596,5865,4906,2087,1306,0417,9177,4135,8665,8075,5935,543132,138

Hazardous Waste-8272515161321131120141612107985777268

Mattresses/Carpets/Pads1126415473100732131422112422032082271722352484063403353393,627

Metal - Scrap6631,6522,1822,7623,5124,5284,6564,3004,4594,0094,3024,4253,9353,3283,2332,7592,9402,4572,1992,4112,8493,36370,260

Mixed Paper-592310490187360387362289229248256582620-----02,698

Sheetrock-66239256344403525336320375377564389310175180198961101962935696,320

Roofing Material----1893,9922,7152,2132,5292,4891,9482,3421,399-6623681,819301000022,704

Tires Hauled1081081721671081181361351491311351229911286968076745180982,332

Unders from Sort Line-5,97713,50013,53715,87526,65026,08424,97727,86323,56225,91723,88920,52423,25620,13319,77724,18824,60225,50025,10123,21822,026456,157

Total Sort Line Diversion1,15812,78323,78225,32232,03053,12450,32749,18854,97445,03346,48945,65137,46638,25334,75431,95741,27138,45337,98937,77136,50936,056809,181

Direct Loads of Wood/Greenwaste12,91015,70919,60725,53627,45730,23733,93430,22732,06545,14240,27535,21432,22134,42031,51434,43033,44832,37134,11931,21033,29440,400672,829

Total MRF Diverted Materials14,06928,49243,39050,85859,48783,36184,26179,41487,03890,17586,76480,86469,68772,67366,26866,38774,71870,82472,10868,98168,80376,4561,481,009

0

Percent Diversion - Sort Line44%43%50%52%52%51%52%50%47%47%46%45%44%41%56%56%55%55%54%51%10

Percent Diversion - Entire MRF59%60%65%63%64%63%63%67%62%61%61%61%60%60%70%70%70%69%69%69%13

0

0

Other Activity0

Sand Sales203,478277,197370,447211,965158,532170,048148,786143,492119,93587,724102,624130,720115,92422,230-------02,059,626

0

Organic Mix Sales-2873,0273,4332,0643,3956,3452,8891,7583,6693,9864,8653,5192,8521,0753,3193,4803,861584--054,409

Mulch Sales3,4576,1868,87710,26410,70012,62414,33612,15612,61614,77912,09713,3348,14210,03610,82211,81512,26111,40616,37717,24717,20024,179267,454

Regular Woodchips Sales-4,9633,1153,6605,2626,6016,8014,5744,0894,6815,8306,5705,8184,4313,9373,1686,23612,2858,3798,45515,24921,712145,816

Color Woodchips Sales--961491503191692643041141161261571031182461291381081641731563,300

Compost Sales--685267358809861,3201,1321,3541,30686178491479172580271693582269565517,004

Top Soil Blend Sales--1171,1911,8322,5392,8382,5462,4841,7071,5101,4511,4061,1481,0531,0311,0161,0331,10581253484828,200

Asphalt/Concrete Sales294--1,074699116----------00001,250

0

Biomass Wood Fuel--1,7742,7823,4019,9527,0749,3617,8397,2987,540649-4,6185,2955,1757,8415,3956,90111,1903,2360107,323

Liquid Waste - Landspread2,7341,5715469409471,5769541,7222,9124,5975,5972,10590651-981--26--025,431

Petroleum Contaminated Soil1698,2533,4304,6711,842------------01,4500019,647

Clean Soil (Estimate)38,37142,45780,32499,215214,73281,260101,608209,174164,62196,69694,823100,207133,93367,87438,39433,69022,68626,42733,18371,49485,10254,3161,852,217

Marginal Cover Material-----45,45717,49822,0588,64110,67314,24022,81538,66919,73911,80716,77622,06631,60955,79430,95027,16125,580421,533

&C&"Arial,Bold"&12Monterey Regional Waste Management District - CY 2007 thru 2016 Tonnage

95-00

Material

IT’S THE LAW Legislation Guiding Our Mission

1989 - (AB939) Help Cities & County meet State 50% solid waste reduction law

2011 - (AB341) Mandatory Commercial Waste Recycling 75 percent recycling goal by 2020

2014 - (AB1826) Mandatory Commercial Organics Recycling

2016 - (SB1383) Organics Recycling 50 percent reduction in disposed organic waste by 2020 and a 75 percent reduction by 2025

Source: California Integrated Waste Management Board Waste Characterization Study, 1999.

Landfill Gas Generation without organics diversion & recycling

The four engine generators now consume 10,000 tons of methane gas annually.

Initial LFG Renewable Energy Project

1983 Trailer mounted engine generators

Gas Production & Project Revenue 1983: • 1.3 MW, 2 units, 9,000 MW generated / yr • Power sales at 1-2 cents / kw-hr • $180,000 in project revenue

FY 2015: • 5 MW - 4 units • Power sales at 4 – 5 cents / kw-hr • $1.58 M in project revenue ( 7% of Operating Revenue)

Recipient of the 2007 SWANA “Gold Landfill Gas Utilization Award”

New Diversion Frontier: Food Scraps

Food Scrap Composting

• Program began in October 2008, 20 tons per month.

• Now 375 - 425 tons per month including collection routes from Monterey, Pacific Grove, Pebble Beach, Santa Cruz County, UCSC and special events.

Renewable Energy at the MRWMD Converting Waste to Energy

Challenges – Political – Technological – Financial – Regulatory

Opportunities – Permits – Land – Location – Track record of success – Supply Regional Water Project with Renewable Energy – Potential Future Supply to Community Choice Power JPA

Looking to the Future: “AD”

• The process of anaerobic digestion consists of three steps:

• The first step is the decomposition (hydrolysis) of plant or animal matter. This step breaks down the organic material to usable-sized molecules such as sugar.

• The second step is the conversion of decomposed matter to organic acids.

• Finally, the acids are converted to methane gas.

Organics Diversion: the Next Frontier

• Dry Anaerobic Digestion pilot project launched at MRWMD in FY 2011-12; Operations in March 2013.

Dry Anaerobic Digestion

Dry Anaerobic Digestion

The Dry Anaerobic Digestion Process

Dry Anaerobic Digestion • Anaerobic Digestion gas is combusted in a CHP unit to produce

100KW of electricity used by the neighboring POTW Facility

Challenges & Opportunities of Organics Diversion

CHALLENGES • Managing a “waste” material outside of a modern Landfill Waste

Management Unit • Permitting – Environmental, Land Use, Solid Waste, & Air Permits • Access to Available Development Areas • Organic Waste Collection Strategies • Managing various Organic Waste Materials

OPPORTUNITIES • Increasing Dry Anaerobic Digestion Capacity • POTW Partnership Wet Anaerobic Digestion Capacity • Digester Gas to Energy Production • Digester Gas &/or LFG Cleanup For CNG Production

Helping create and maintain a sustainable community by Turning

Waste into Resources

Renewable Energy Recovery�& Organics Diversion��Landfill Methane Outreach Program (LMOP) Special Session�SWANA Western Regional Symposium�Reno, Nevada, March 29, 2017Presentation OverviewSlide Number 3�Managing Waste: 1920 - 1955Serving �Northern Monterey County �and�Surrounding CommunitiesMRWMD Today - An Integrated ApproachMRWMD Public Infrastructure for �Managing Waste & ResourcesSlide Number 8IT’S THE LAW�Legislation Guiding Our Mission Slide Number 10Landfill Gas Generation �without organics diversion & recyclingInitial LFG Renewable Energy Project�Slide Number 13Slide Number 14Gas Production & Project Revenue��Slide Number 16New Diversion Frontier:�Food ScrapsFood Scrap CompostingRenewable Energy at the MRWMD�Converting Waste to EnergyLooking to the Future: “AD”Organics Diversion: �the Next FrontierSlide Number 22Slide Number 23The Dry Anaerobic Digestion ProcessSlide Number 25Dry Anaerobic DigestionChallenges & Opportunities �of Organics DiversionSlide Number 28