Environmental ProtectionWaste Management is committed to the highest standards of environmental responsibility andhas invested millions of dollars into the site’s environmental control systems which include landfillliners, landfill gas collection, and groundwater and air quality monitoring.

Facility Permits and Environmental Monitoring Pine Tree Acres Landfill operates in compliance with regulations promulgated under theNatural Resources and Environmental Protection Act, 1994 P.A.451 as amended. TheMichigan Department of Environmental Quality (MDEQ) is the agency that oversees thelandfill’s construction, operation and environmental monitoring. The facility operates underthe following permits:• Solid Waste Disposal Area Construction Permits • Title V Renewable Operating Permit • Solid Waste Disposal Area Operating License (Air Permit)• Soil Erosion and Sediment Control Permit • Stormwater General Permit

In addition to these permits, Pine Tree Acres Landfill is required to maintain numerous monitoring and pollution prevention plans. These include waste screening and acceptance plans, groundwater monitoring, landfill gas monitoring and storm water pollution prevention plans, to name just a few.

• In accordance with MDEQ regulations, the facility monitors surface water, groundwater, and air emissions.• There are 17 groundwater monitoring wells around the site that are installed to monitor the groundwater that flows belowthe landfill. These groundwater monitoring wells are sampled, tested and the results reported quarterly to the MDEQ.

• The gas collection system is expanded regularly at the site and is currently comprised of over 300 wells that aremonitored routinely.

• There are 17 gas probes that surround the site to test for any migration of landfill gas. Reports are submitted to theMDEQ on a semiannual basis.

Waste Management’s Pine Tree Acres Landfill in Lenox Townshipprovides waste and disposal services as well as a recycling collectionlocation for area residents and businesses. WMRE facility createsenergy from landfill gas.

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Waste Management’s Pine Tree Acres Landfill has operated in the ruralsetting of Lenox Township, Michigan since 1986. The landfill is a Type IInon-hazardous solid waste disposal facility and recycling drop-off centerthat also creates renewable energy. Pine Tree Acres is owned and operatedby Waste Management, the leading provider of comprehensive waste andrecycling services in North America.

About Our FacilityPine Tree Acres is a modern, engineered landfill offering an environmentallysound process for managing the waste generated by local residents,commercial businesses and communities in SE Michigan. For tours call586-749-9698.

Converting Landfill Gas to Renewable EnergyLandfill gas is aby-product of thenatural decomposi-tion of waste in thelandfill. Methaneis recovered fromthe landfill gas atPine Tree Acres andconverted into fuelthat is used to gen-erate electricity forConsumers Energyand DTE Energy.

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Pine Tree Acres LandfillLenox Township, Michigan

www.wm.comhttp://pinetreeacres.wm.com

Site Facts• Total property: 564.5 acres• Current permitted area forsolid waste: 283 acres

• Potential capacity exceeds 50 years

• Waste received: approxi-mately 5000+ tons per day

• Landfill Energy Systems(LES) facility producesenough electricity to DTE topower over 7,500 homes

• The Pine Tree Acres Renewable Energy Plantprovides electricity toConsumers Energy forapproximately 12,000homes

Components of the Landfill Liner SystemWaste disposal at Pine Tree Acres Landfill is managed with protection ofthe environment as a primary goal. The site utilizes the best availabletechnology when constructing each new cell liner system. The technologyutilized is considered appropriate for the site given the natural geology ofthis location. The liner system consists of multiple layers that separate thewaste from, and protect the environment. Bottom to top, the liner systemis comprised of a 2-foot thick re-compacted clay liner overlaying a10-foot thick natural clay soil barrier, followed by a 60-mil high-densitypolyethylene liner, and finally the leachate collection system. Leachateis liquid, primarily precipitation, which passes through the waste. Theleachate collects in a network of pipes that direct the liquid to storagetanks. A portion of the leachate is then reintroduced back into the wastemass to encourage decomposition and the creation of landfill gas forrenewable energy.

Natural Habitat and Wetlands ProtectionPine Tree Acres is a certified Wildlife Habitat Council/Wildlife at Workprogram. The Wildlife Habitat Council, formed in 1988, is a nonprofit,non-lobbying 501(c)(3) group of corporations, conservation organiza-tions, and individuals dedicated to restoring and enhancing wildlife habitat.

All together, Pine Tree Acres provides over 100 acres of dedicated naturaland reconstructed wetland area adjacent to the site. Thirty-four andonehalf (34.5) acres of these wetland areas are the reconstructedwetlands created in 1998 as part of a wetland mitigation project.

These natural areas serve as home to numerous species of wildlife, includ-ing deer, fox, a variety of waterfowl, turtles and other aquatic life andimportant pollinators. Wildlife monitoring, observation journals and speciesinventories are updated on a routine basis by Waste Management employ-ees and community members that make up the Pine Tree Acres WildlifeManagement Team.

The program is designed to encourage individuals to connect with theirnatural environment and provides important information to local andnational groups on wildlife populations.

Community ProgramsAlong with protecting the environment through its state-of-the-art landfilland renewable energy operations, Waste Management also believes in mak-ing a strong commitment to the local community. Each year, Pine Tree Acresparticipates in several programs and organizations that encourage a vitalcommunity.

• Richmond & Anchor Bay Chambers of Commerce• Lenox/New Haven Community Events• Macomb County Green Schools Program• Clinton River Watershed Council• St. Clair Flats Waterfowlers, Inc.• Macomb Conservation District• Donation of 455 acres of wetland adjacent to the St. Johns Marshin Anchor Bay in 2006 to MDNR for preservation, as part of awetland exchange

WM Pine Tree Acres Landfill

36600 29 Mile RoadLenox, MI 48048Telephone 586-749-9698Fax586-749-6440Hours• Mon.-Fri. - 7:00 a.m. to 4:30 p.m.Sat. - 7:00 a.m. to 11:00 a.m.

• Please call for current hours of operation ashours change seasonally.

• Recycling drop-off available during normallandfill hours.

• Tours are available.

Typical Anatomy of a LandfillCover Vegetation

Top Soil

Protective Cover Soil

Drainage Layer

Geomembrane

Compacted Clay(1.5 feet)

Daily Cover

Waste

Leachate Drainage Layer(1 foot)

Pipe Bedding

Leachate Collection Pipe

Geotextile andGeomembrane

Compacted Clay(2 feet)

Prepared Subgrade/Native Clay Soil(10 feet min.)

1

2

3

4

5

7

6

8

15

14

13

12

11

9

Geotextile/Geonet10

(Layers 7 and 8 arerepeated until thelandfill sectionreaches its capacity)

www.wm.com http://pinetreeacres.wm.com