| *****  Certain      information in this exhibit has been omitted pursuant to a request for      confidential treatment.  The omitted portions have been filed      separately with the Securities and Exchange Commission.  We have      marked this exhibit where information has been omitted with      “*****”. |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

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| ARTICLE      1 – Definitions                            | 2      |
|---------------------------------------------------------------|--------|
|                                                          |   |
| ARTICLE      2 – Preliminary Acts of the Parties        | 6      |
|                                                          |   |
| ARTICLE      3 – Facilities                             | 10     |
|                                                          |   |
| ARTICLE      4 – Landfill Gas Purchase/Sales/Acceptance | 11     |
|                                                          |   |
| ARTICLE      5 – Title/Risk of Loss                     | 16     |
|                                                          |   |
| ARTICLE      6 – Term and Right to Terminate            | 17     |
|                                                          |   |
| ARTICLE      7 – Gas Quality                            | 19     |
|                                                          |   |
| ARTICLE      8 – Measurement                            | 21     |
|                                                          |   |
| ARTICLE      9 – Price, Billing and Payment             | 22     |
|                                                          |   |
| ARTICLE      10 – Indemnity                             | 24     |
|                                                          |   |
| ARTICLE      11 – Warranties and Representations        | 25     |
|                                                          |   |
| ARTICLE      12 – Insurance                             | 27     |
|                                                          |   |
| ARTICLE      13 – Miscellaneous                         | 29     |
|                                                          |   |
| EXHIBIT      A – FORM OF SITE LEASE                     |   |
|                                                          |   |
| EXHIBIT      B – EXAMPLE OF GROSS REVENUE CALCULATION   |   |

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| 1.1 | Accounting      Period means any period that begins on the first day of any      calendar month and ends on the last day of such calendar month during the      Contract Term, except that the first Accounting Period shall commence with      initial deliveries of Landfill Gas hereunder and end on the last day of      the calendar month in which such initial deliveries are    made. |
|-----|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| 1.2 | Affiliate      means, with respect to Purchaser or Seller, as the case may be, any Person      that directly or indirectly owns fifty percent (50%) or more of Purchaser      or Seller, or any Person of which Purchaser or Seller directly or      indirectly owns at least fifty percent (50%) of the equitable interests,      or their respective parent entities, or any subsidiary of their respective      parent entities. |
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| 1.3 | Agreement means      this Landfill Gas Sale and Purchase Agreement, including exhibits and      attachments, and all amendments and modifications hereafter executed by      the Parties hereto. |
|-----|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| 1.4 | BTU means British      Thermal Unit, defined as the amount of heat required to raise the      temperature of one (1) pound of water one (1) degree Fahrenheit at a      temperature of sixty (60) degreesFahrenheit. |
|-----|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| 1.5 | Commercial Operations      Date means the first date after which Purchaser’s Facilities have      been in continuous operation (i.e.,      processing and selling Landfill Gas to a Gas Buyer) for a fourteen (14)      consecutive day period during which the availability factor of Purchaser’s      Facilities meets or exceeds eighty percent (80%) calculated on an hourly      basis. |
|-----|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| 1.6 | Contract Term      means the period commencing on the Effective Date and ending December 31,      2029. |
|-----|---------------------------------------------------------------------------------------------------------|

| 1.7 | Delivery Point      means the point on Purchaser’s Site and prior to the Purchaser’s      Facilities where Purchaser shall locate, own, operate, and maintain a      custody transfer meter and Landfill Gas quality  analyzer. |
|-----|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| 1.8 | Effective Date      means the date this agreement is duly executed and delivered by both      Parties, as indicated above. |
|-----|----------------------------------------------------------------------------------------------------------------------------|

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| 1.9 | Environmental      Attributes means      any and all credits,      benefits, emissions reductions, offsets, and allowances, howsoever      entitled, attributable to the Purchaser’s Facilities, and its displacement      of conventional energy generation.  Environmental Attributes      include but are not limited to:  (1) any avoided emissions of      pollutants to the air, soil or water such as sulfur oxides (SOx), nitrogen      oxides (NOx), carbon monoxide (CO) and other pollutants; (2) any avoided      emissions of carbon dioxide (CO2), methane (CH4) and other greenhouse      gases (GHGs) that have been determined by the United Nations      Intergovernmental Panel on Climate Change to contribute to the actual or      potential threat of altering the Earth’s climate by trapping heat in the      atmosphere; and (3) the reporting rights to these avoided emissions such      as Green Tag Reporting Rights.  Green Tag Reporting Rights are      the right of a Green Tag purchaser to report the ownership of accumulated      Green Tags in compliance with federal or state law, if applicable, and      to a federal or state agency or any other party at the Green Tag      purchaser’s discretion, and include without limitation those Green Tag      Reporting Rights accruing under Section 1605(b) of The Energy Policy Act      of 1992 and any present or future federal, state, or local law, regulation      or bill, and international or foreign emissions trading      program.  Green Tags are accumulated on kWh basis and one Green      Tag represents the Environmental Attributes associated with one (1) MWh of      energy.  To the extent related and limited to the purchase and      sale of Landfill Gas contemplated hereby, Environmental Attributes also      include (i) any energy, capacity, reliability or other power attributes      from the Purchaser’s Facilities, (ii) production tax credits associated      with the construction or operation of Purchaser’s Facilities, Seller’s      Site or Seller’s Facilities, or any other associated contract or right,      and other financial incentives in the form of credits, reductions,      or allowances associated with the Purchaser’s Facilities, Seller’s Site or      Seller’s Facilities that are applicable to a state or federal income      taxation obligation. |
|-----|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| 1.10 | Environmental      Laws means any      applicable federal, state, or local governmental law, statute, rule,      regulation, order, consent decree, decree, judgment, permit, license,      covenant, deed restriction, ordinance or other requirement or standard      relating to pollution or the regulation or protection of health, safety,      natural resources, or the environment, as now existing or hereafter in      effect, including, without limitation, those relating to releases,      discharges, emissions, injections, leachings, or disposals of hazardous      substances or hazardous materials into air, water, land or groundwater, to      the withdrawal or use of groundwater, or to the use, handling, treatment,      removal, storage, disposal, processing, distribution, transport, or      management of hazardous substances. "Environmental Laws" shall include,      but shall not be limited to, the Clean Air Act; the federal Water      Pollution Control Act; the Safe Drinking Water Act; the Toxic Substances      Control Act; the Comprehensive Environmental Response, Compensation and      Liability Act, as amended by the Superfund Amendments and Reauthorization      Act of 1986; the Resource Conservation and Recovery Act, as amended by the      Solid and Hazardous Waste Amendments of 1984; the Occupational Safety and      Health Act; the Hazardous Materials Transportation Act; the Oil Pollution      Act of 1990; and any similar federal, state or local statutes and      regulations. |
|------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| 1.11 | Excess Gas      shall have the meaning set forth in Article4.2. |
|------|-----------------------------------------------------------------|

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| 1.12 | Excess Gas Condition      shall have the meaning set forth in Article  4.2. |
|------|-----------------------------------------------------------------------------|

| 1.13 | Gas Buyer means      any purchaser of processed or unprocessed Landfill Gas from Purchaser      pursuant to a Gas PurchaseContract. |
|------|-------------------------------------------------------------------------------------------------------------------------------------|

| 1.14 | Gas Purchase      Contract means an agreement between Purchaser and a Gas Buyer for      the purchase of processed or unprocessed Landfill  Gas. |
|------|--------------------------------------------------------------------------------------------------------------------------------------------------|

| 1.15 | Governmental      Authority means any United States federal, state or local or any      foreign government, governmental, regulatory or administrative authority,      agency or commission or any court, tribunal, or judicial or arbitral      body. |
|------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| 1.16 | Gross Revenue      means collected revenue received directly by Purchaser or its Affiliates      from or with respect to the sale of Landfill Gas from Seller’s Site, net      of any refunds of previously collected revenue resulting from Purchaser      overcharging its customers, together with (i) the value realized directly      or indirectly by Purchaser or its Affiliates with respect to any      Environmental Attributes derived by Purchaser or its Affiliates as a      result of the transactions or activities contemplated by this Agreement      and (ii) the value of any exchanged services or other in-kind exchanges      relating to the sale or use of Landfill Gas, if any.  Purchaser      agrees to disclose to Seller any contractual provisions that provide for      any exchanged services or other in-kind exchanges in place of the receipt      of revenues relating to the sale of Landfill Gas, if any, it being the      intent of the parties that the market value of such in-kind exchanges, as      reasonably determined by the parties, will be included in the      determination of Gross Revenue.  Purchaser and Seller      acknowledge that certain amounts of Purchaser’s Gross Revenue may be      derived from the sale of processed Landfill Gas that has been combined      with landfill gas drawn from Live Oak.  To the extent that such      event occurs, the portion of such Gross Revenue attributable to Seller’s      Site from the combined processing of landfill gas from the two landfill      sites shall equal the total gross revenues derived by Purchaser from the      sale of processed landfill gas during the measurement period multiplied by      a fraction, the numerator of which shall be the total MMBTUs of Landfill      Gas drawn by Purchaser from Seller’s Site during the measurement period,      and the denominator of which shall be the combined MMBTUs of landfill gas      drawn from Seller’s Site and from Live Oak to the Processing Facility      during the measurement period.  An example of the foregoing      calculation is attached hereto as Exhibit      B.  Seller shall be allocated all other gross revenues      relating to the sale of Landfill Gas from Seller’s Site if such Landfill      Gas is not combined with landfill gas from Live Oak.  If Seller      and Purchaser, in their discretion, mutually agree upon any other use by      Purchaser of Landfill Gas other than the processing, transportation and      sale of Landfill Gas as contemplated herein, the determination of value      for purposes of this definition shall be as mutually agreed upon by Seller      and Purchaser, in their discretion. |
|------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| 1.17 | Higher Heating      Value shall mean the amount of heat released when a known volume of      hydrocarbon (i.e., Landfill      Gas) is burned. |
|------|-----------------------------------------------------------------------------------------------------------------------------------------------|

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| 1.18 | Landfill Gas      means gas generated from the decomposition of refuse and other solid      wastes deposited or located on Seller’s Site and collected by Seller’s      Facilities. |
|------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| 1.19 | Modifications      shall have the meaning set forth in Article4.6. |
|------|--------------------------------------------------------------------|

| 1.20 | Person means an      individual, partnership, corporation (including a business trust), limited      liability company, joint stock company, trust, unincorporated association,      joint venture, or other entity, or a government or any political      subdivision or agency thereof, or any trustee, receiver, custodian, or      similar official. |
|------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| 1.21 | Purchaser means      GES Live Oak – Hickory Ridge, LLC, a Georgia limited liability company,      with principal offices at Suite 250, Tower Place 200, 3348 Peachtree Road,      NE, Atlanta, Georgia 30326. |
|------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| 1.22 | Purchaser’s      Facilities means the fixtures, equipment and assets of Purchaser,      whether owned or leased by Purchaser that are used by Purchaser in the      performance of Purchaser’s business and are currently or may in the future      be located on Purchaser’s Site, subject to the terms and conditions of a      Site Lease Agreement.  Purchaser’s Facilities may also include,      but shall not be limited to: (i) a pipeline suitable to transport Landfill      Gas from the Delivery Point to the Purchaser’s processing and conversion      equipment at the Live Oak landfill; (ii) a pipeline suitable to transport      Landfill Gas from Purchaser’s Site to the AGL Main or elsewhere for sale;      (iii) all equipment and pipelines necessary or convenient for Purchaser to      process the Landfill Gas on Purchaser’s Site into a saleable product; (iv)      all equipment that may be required for the connection of the existing      blower(s) to the Delivery Point (including all control systems necessary      to automatically direct Landfill Gas to Seller’s Flare when Purchaser does      not purchase and/or accept Landfill Gas from Seller pursuant to this      Agreement or Purchaser’s Facilities do not or cannot process such Landfill      Gas); (v) backup generators that would allow Purchaser to operate the      Purchaser’s Facilities in the event of a power loss and that would also      generate enough electricity in the event of a power loss for Seller to be      able to run a flare system, provide Landfill Gas to the Delivery Point and      pump condensate offsite for disposal; and (vi) metering equipment,      compressors, dehydration units and/or other landfill gas processing      equipment used for collecting, producing and delivering or facilitating      the collection, production and delivery of processed Landfill      Gas,  or as the same is modified, expanded and/or      replaced. |
|------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| 1.23 | Purchaser’s      Site means that certain real estate upon which the Purchaser’s      Facilities will be located, which real estate shall be leased from Seller      pursuant to the terms and conditions of a Site Lease      Agreement. |
|------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| 1.24 | Qualifying Landfill      Gas means Landfill Gas meeting the minimum standards described in      Article 7.1. |
|------|--------------------------------------------------------------------------------------------------------------|

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| 1.25 | Section 29 Tax      Credits means those Tax Credits available under Section 29 of      Subtitle A, Chap. 1A, Part IV of the Internal Revenue Code of 1986, as      amended from time to time (or any successor  provision). |
|------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| 1.26 | Seller means      BFI Waste Systems of North America, LLC, a Delaware limited liability      company, with offices at 18500 North Allied Way, Phoenix, Arizona      85054. |
|------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| 1.27 | Seller’s      Facilities means the      fixtures, equipment and assets of Seller, whether owned or leased by      Seller that are either used by Seller in the performance of Seller’s      business or are currently or may in the future be located on Seller’s Site      up to the Delivery Point and includes, but is not limited to, the wells,      pipes, headers and gathering systems, flares, vacuum pipelines, blowers,      condensate knockout vessels or systems and all other fixtures, equipment      and assets that are used for the purpose of collecting, producing and      delivering or facilitating the collection, production and delivery of      Landfill Gas, as such exists as of the Effective Date or as the same may      be modified, expanded and replaced.  The term “Seller’s      Facilities” shall not include the Purchaser’s  Facilities. |
|------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| 1.28 | Seller’s Flare      means the combustion and control system flare(s) owned and operated by      Seller at Seller’s Site. |
|------|--------------------------------------------------------------------------------------------------------------------------------------|

| 1.29 | Seller’s      Site means the Hickory      Ridge Landfill located at 3330 Moreland Avenue, Conley, Georgia      30288. |
|------|----------------------------------------------------------------------------------------------------------------------------------|

| 1.30 | Site Lease      Agreement means a separate Site Lease Agreement to be entered into      between Purchaser and Seller. |
|------|-----------------------------------------------------------------------------------------------------------------------|

| 1.31 | Tax Credits      means all or any of the credits against or with reference to any federal,      state, or local taxes. |
|------|------------------------------------------------------------------------------------------------------------------------|

| 1.32 | Work means any      and all efforts performed by Purchaser to modify Seller’s Facilities to      redirect Landfill Gas to the Delivery Point, as more specifically      described in Article 2.6. |
|------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| 2.1 | Permits,      Authorizations.  Seller will use commercially reasonable      efforts to timely and promptly obtain all necessary permits and      authorizations, if any, required to deliver Landfill Gas to Purchaser in      accordance with this Agreement.  Seller shall provide Purchaser      reasonable written notice prior to filing for, or requesting, any permit,      authorization, zoning change, consent, or approval (or any modification of      any of the foregoing) related to this Agreement.  Any permits      and authorizations relating primarily to the Purchaser’s Facilities or      Purchaser’s business operations shall be the sole responsibility and      obligation of Purchaser.  Purchaser shall provide Seller      reasonable written notice prior to filing for, or requesting, any permit,      authorization, zoning change, consent, or approval (or any modification of      any of the foregoing) related to the Purchaser’s Facilities, Purchaser’s      Site, or Purchaser’s business operations related to this      Agreement.  Upon written request, each Party shall provide the      other with a copy of the application and status of the permits and      authorizations described above.  Notwithstanding any other      provision of this Agreement, Purchaser shall not be obligated to commence      or continue design or construction of the Purchaser’s Facilities or of any      additions, improvements or modifications thereto, or of any modifications      to Seller’s Facilities, except to the extent that Purchaser and Seller      have obtained all necessary permits and authorizations therefore and      Purchaser has entered into one or more Gas Purchase Agreements upon terms      and with respect to quantities of Landfill Gas sufficient in Purchaser’s      sole and absolute discretion to render such facilities economically viable      and advisable, taking into account (among other matters) the financial      terms of this Agreement.  Purchaser will use commercially      reasonable efforts to enter into one or more Gas Purchase Agreements      acceptable to it and to obtain all such necessary permits and      authorizations. This Article 2.1      shall in no way limit or modify Seller’s rights set out in Article 6      below. |
|-----|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

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| 2.2 | Mutual      Assistance.  Each Party shall be responsible for the      acquisition and payment of their respective permits and      authorizations.  However, upon written request, the Parties      hereto shall use commercially reasonable efforts to support and assist one      another in the acquisition of any required permit or authorization to      fulfill the obligations hereunder, and the assisting Party shall be      reimbursed its out-of-pocket costs by the Party that requested the support      and assistance.  Such support shall include, without limitation,      participation in regulatory proceedings and provision of relevant      non-confidential information concerning each Party’s      operations.  If either Party, in its sole and absolute      discretion, provides confidential information to the other Party in      connection with such support, the Party receiving such confidential      information shall comply with the provisions of Article    13.12. |
|-----|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| 2.3 | Site Lease      Agreement.  No later than one hundred twenty (120) days      after the execution of this Agreement and at no additional cost or      expense, Purchaser and Seller shall enter into a Site Lease Agreement in a      form substantially similar to the form attached hereto as Exhibit A;      provided, however, the Site Lease Agreement shall include a grant to      Purchaser of all necessary easements for pipelines and other      infrastructure located outside Purchaser’s Site (and located on Seller’s      Site) but related to the Purchaser’s Facilities, Purchaser’s Site, or      Purchaser’s business operations as to this  Agreement. |
|-----|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| 2.4 | Public Utility      Status.  Neither Party hereto shall hold itself out as a      public utility or submit to the jurisdiction of the Georgia Public Service      Commission (“GPSC”), or any other local, state or federal agency by reason      of the extraction, purchase, treatment, delivery, transfer or sale of      Landfill Gas hereunder without being required to do so under applicable      laws.  If, for any reason, either Party is considered a public      utility by the GPSC such that its rates, charges, rules, regulations,      service, financing, accounts, and such other matters involving a privately      owned gas public utility distribution system are subject to the regulation      or jurisdiction of the GPSC as provided for under O.C.G.A. §46-4-1, et      seq., or other appropriate Governmental Authority, such Party agrees to      use reasonable, good faith efforts to obtain relief from such regulations,      in the form of a waiver or some other relief acceptable to such      Party.  If such Party is unable to obtain the waiver or relief      requested, and the GPSC or other appropriate Government Authority      continues to attempt to subject the Party to regulation as a public      utility, such Party may, upon at least sixty (60) days written notice to      the other Party, terminate this Agreement and have no further obligations      hereunder except for any obligation identified in Article 6.4      herein.  Notwithstanding the foregoing, in the event that      Purchaser’s construction of a pipeline to deliver the Landfill Gas from      Seller’s Site to the Processing Facility or the AGL Main or elsewhere      subjects Purchaser to the jurisdiction of the GPSC or any other local,      state or federal agency, and Purchaser consents to such jurisdiction, this      Agreement shall not terminate under this Article 2.4; provided that such      treatment of Purchaser does not have a material adverse effect on Seller      or require Seller to be treated as a public utility by      GPSC.  Notwithstanding anything else herein to the contrary, the      Parties acknowledge that the GPSC has safety jurisdiction over all natural      gas pipelines constructed in Georgia and the exercise of such jurisdiction      over any pipelines contemplated by this Agreement shall not provide either      Party a right to terminate thisAgreement. |
|-----|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

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| 2.5 | Construction of      Purchaser’s Facilities.  Subject to the other provisions      in this Agreement and at no cost to Seller, Purchaser shall construct and      install the Purchaser’s Facilities.  The Purchaser’s Facilities      may include any of the equipment or facilities described in Article 1.22      but at a minimum shall include, without  limitation: |
|-----|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (a) | All      equipment required for the connection of the Purchaser’s Facilities and      Seller’s Facilities at the DeliveryPoint; |
|--------|-----|---------------------------------------------------------------------------------------------------------------------------------------------|

|   | (b) | A      pipeline suitable to transport Landfill Gas from the Delivery Point to the      Processing Facility, to the AGL Main, or to another location for sale;      and |
|--------|-----|------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|  | (c)  | The      metering and measuring equipment described in Article  8.1. |
|--|-----------|----------------------------------------------------------------------|

| 2.6 | Modification of      Seller’s Facilities.  Purchaser shall, at no cost to      Seller, modify Seller’s Facilities as necessary to redirect Landfill Gas      to the Delivery Point.  Prior to making any modifications to      Seller’s Facilities required for connecting Seller’s Facilities to the      Delivery Point, Purchaser shall provide Seller with a full set of      drawings, such that Seller can conduct a design review and approval that      shall be limited to issues directly relating to compatibility with      Seller’s Facilities.  Seller shall complete any design review      within thirty (30) days after receipt of the drawings and agrees not to      unreasonably withhold, condition, or delay such      approval.  Seller’s review and/or approval of such design shall      not be deemed a warranty or representation of any kind as to the design,      suitability, capability, or expected performance of the Purchaser’s      Facilities or operations.  Title to all equipment required to      modify Seller’s Facilities as provided in this Article 2.6 shall pass to      Seller free and clear of all liens, claims, encumbrances and security      interests as of the date of the incorporation of such equipment into      Seller’s Facilities, and Purchaser shall execute and deliver to Seller      such lien waivers and other documents reasonably requested by      Seller. |
|-----|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

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| 2.7 | Priority of Landfill      Operations.  Notwithstanding anything herein to the      contrary, Purchaser understands and agrees that Seller’s primary interest      and obligation are the safe and efficient operation of Seller’s Site, in      compliance with applicable laws and permit conditions, and that any      interest of Purchaser in the Landfill Gas shall remain secondary to the      operation of Seller’s Site.  Purchaser’s rights and interests      hereunder shall not interfere with Seller’s compliance with any permit      related to Seller’s Facilities, or with the lawful and safe operation of      Seller’s Site, including the design, construction, operation, maintenance,      monitoring, closure, and post-closure of Seller’s Site.  Seller      may, in emergency circumstances, operate its blowers and flares      independent of Purchaser, if Seller deems necessary.  Subject to      the foregoing, Seller and Purchaser will work together in good faith to      attempt to minimize adverse impacts to the Landfill Gas flow and      Purchaser’s operations resulting from Seller’s primary interest and      obligation; provided that nothing in this Agreement shall require Seller      to incur out-of-pocket expenses in taking any actions that are not      required to be taken by Seller in this Agreement with respect to      compliance with applicable laws and permits relating to Seller’s Site and      Seller’s operations (without taking into account Purchaser’s activities      for purposes of making the foregoing  determination). |
|-----|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

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| 2.8 | Return of Project      Development Payment.  Notwithstanding anything herein to      the contrary, during the period from the date hereof through the earlier      of the Commercial Operations Date or December 31, 2010, Purchaser shall      have the option to terminate this Agreement on written notice to Seller      and promptly receive reimbursement from Seller of the entire amount of the      Project Development Payment if Seller fails to use commercially reasonable      efforts (i) to secure all permits, authorizations, licenses and approvals      (or modifications of any of the foregoing) required to be obtained by      Seller with respect to the activities contemplated herein, and (ii) at no      out of pocket cost to Seller, to assist Purchaser in making application      for and obtaining, all other permits, authorizations, zoning changes,      consents, licenses and approvals (or modifications of any of the      foregoing) required to be obtained with respect to the activities      contemplated herein; provided that if at any time Purchaser believes that      Seller is not acting in a commercially reasonable manner, it shall give      written notice to Seller including reasonable detail of any alleged      failure of Seller to fulfill its obligations, and a reasonable opportunity      to cure any such alleged failure.  The period within which      Purchaser may terminate and receive reimbursement of the Project      Development Payment shall be extended by the same amount of time that      Seller is determined not to have been using such commercially reasonable      efforts prior to curing suchfailure. |
|-----|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| 3.1 | Purchaser’s      Facilities.  Purchaser shall be responsible for all costs      and expenses to construct, install, maintain, and operate the Purchaser’s      Facilities (including, but not limited to, utilities      expense).  At all times during the term hereof, the Purchaser’s      Facilities shall be designed, constructed, maintained and operated in      compliance with all applicable permits, laws and regulations, including      without limitation Environmental Laws.  The Purchaser’s      Facilities shall include equipment to automatically route Landfill Gas to      and start Seller’s Flare in the event the Purchaser’s Facilities are      inoperative, or Purchaser is not fully utilizing the Landfill      Gas.  In the event the Purchaser’s Facilities are inoperative      for a period of five (5) consecutive days, Purchaser shall provide written      notice to Seller of such fact and provide an estimate of the date by which      the Purchaser’s Facilities shall be operative.  Purchaser shall      retain all rights to any Environmental Attribute, tax, emission or other      credits with respect to the handling, processing and sale of Landfill Gas      downstream of the Delivery Point, including without limitation,      Purchaser’s operations, Purchaser’s Facilities, and the purchase of      Landfill Gas by Gas Buyer(s) from Purchaser, or using Landfill Gas as a      fuel, including without limitation, Renewable Energy Production Incentive      Payments from the U.S. Department of Energy, and any credits realized in      connection with the generation of energy, or the generation of electricity      for its own account (if such use is mutually approved by the Parties), or      the combustion of Landfill Gas by the Purchaser’s      Facilities.  Notwithstanding the foregoing, any Environmental      Attribute, tax, emission or other credits that may be taken by Purchaser      and Seller, but not both, shall be shared in the manner contemplated by      Article 9.5, with the exception that any tax, emission or other credits      that would be available to Seller without regard to Purchaser’s activities      hereunder shall remain with Seller. |
|-----|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

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| 3.2 | Seller’s      Facilities.  Seller is responsible for the ownership,      operation, and maintenance of Seller’s Facilities.  Seller shall      be solely responsible for the design, engineering, construction,      installation and cost of operation and maintenance of Seller’s Facilities,      including the construction, operation and maintenance of Landfill Gas      collection and destruction facilities necessary for health and safety, to      prevent migration of Landfill Gas onto adjacent properties, and to comply      with applicable federal, state and local regulatory requirements for      control of Landfill Gas emissions from Seller’s Facilities (provided      however that any costs associated with the Modification of Landfill Gas      collection and destruction facilities shall be borne by Purchaser to the      extent set forth in Article 4.6herein). |
|-----|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| 3.3 | Seller’s Compliance      Obligations; Certain Credits.  Seller shall design,      construct, install, operate and maintain Seller’s Facilities in accordance      with regulatory requirements of 40 CFR Part 60, Subpart WWW, Standards of      Performance For New Stationary Sources.  Notwithstanding the      foregoing, Seller shall be responsible for operation and maintenance costs      and expenses related to the Seller Facilities only to the extent required      for compliance with its permits and laws, rules and regulations applicable      to Seller’s landfill operations and Seller’s Site, or as otherwise      required under this Agreement.  Seller shall retain all rights      to any Environmental Attribute, tax, emission or other credits with      respect to the handling of Landfill Gas upstream of the Delivery Point,      including without limitation, Seller’s Site, Seller’s operations and      Seller’s Facilities, including further, without limitation, the flaring or      other combustion of Landfill Gas by Seller’s Facilities, the sale of      Landfill Gas to Purchaser, and Section 29 Tax Credits and similar Tax      Credits.  Notwithstanding the foregoing, any Environmental      Attribute, tax, emission or other credits that may be taken by Purchaser      and Seller, but not both, shall be shared in the manner contemplated by      Article 9.5, with the exception that any tax, emission or other credits      that would be available to Seller without regard to Purchaser’s activities      hereunder shall remain with Seller.  Each Party shall be      responsible for the purchase of its own emission credits and/or offsets,      as required. |
|-----|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| 4.1 | Purchase and      Sale.  Beginning on the Effective Date, and subject to      the terms and conditions of this Agreement, Purchaser shall have the      exclusive right to purchase from Seller all Landfill Gas produced at      Seller’s Site for processing and sale to Gas Buyer(s) pursuant to a Gas      Purchase Contract(s).  Seller shall use commercially reasonable      efforts to provide and sell to Purchaser such Landfill Gas produced at      Seller’s Site in accordance with the terms and conditions of this      Agreement. |
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| 4.2 | Excess      Gas.  Notwithstanding any other term of this Agreement to      the contrary, if at any time following the Commercial Operations Date      Purchaser fails to process and sell at least fifty percent (50%) of the      Qualifying Landfill Gas made available by Seller  over a rolling      one hundred eighty (180)-day period (herein defined as an “Excess Gas      Condition”), in addition to Seller’s right to terminate this Agreement as      provided in Article 6.2(f), Seller shall have the option to provide      Purchaser written notice (herein defined as an "Excess Gas Notice") that      Seller wishes to sell Qualifying Landfill Gas in excess of the average      percentage of Qualifying Landfill Gas processed and sold by Purchaser over      the rolling one hundred eighty (180)-day period (“Excess Gas”) to a third      party on a permanent basis.  Upon receipt of an Excess Gas      Notice, Purchaser must within sixty (60) days commence purchasing no less      than fifty percent (50%) of all Qualifying Landfill Gas made available by      Seller, or lose the right to purchase the Excess  Gas. |
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| 4.3 | Seller      Operations.  Seller shall use commercially reasonable      efforts to provide Purchaser with Qualifying Landfill Gas over the term of      this Agreement.  Such commercially reasonable efforts shall      include, but not necessarily be limited to, the  following: |
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|  | (a) | Seller      will maintain in full force and effect all permits, approvals,      certificates of occupancy and licenses required to deliver Landfill Gas to      Purchaser as provided hereunder.  Subject to Article 2.7, Seller      agrees to use commercially reasonable efforts to maximize Qualifying      Landfill Gas production and to provide sufficient competent, knowledgeable      and fit personnel to lawfully and properly perform its obligations      hereunder; |
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|  | (b) | The      Parties recognize and acknowledge that careful and proper tuning of the      wells, including diverting poor quality wells to Seller’s Flare, is likely      to maximize the delivery of Qualifying Landfill Gas to the Delivery Point      such that the Parties’ mutual economic benefits under this Agreement may      be realized.  Subject to the provisions of Article 2.7, and any      other limitations set forth in this Agreement, the Parties agree to      cooperate in good faith to accomplish such goal; provided that the cost of      any diversion of the Landfill Gas shall be the sole responsibility of      Purchaser.  Accordingly, subject to the above-referenced      limitations, Seller shall tune the well field on Seller’s Site, from time      to time as needed, in accordance with generally accepted landfill      operating practices with the objective of maximizing the delivery of      Qualifying Landfill Gas to the Delivery Point.  Tuning of the      well field shall be accomplished by the use of a experienced, qualified      well field technician, and commencing on the Commercial Operations Date,      Purchaser shall pay to Seller the amount of eighty thousand dollars      ($80,000) annually, as may be adjusted thereafter on an annual basis, to      take into account changes in the Bureau of Labor Statistics’ Atlanta CPI      series CUURA A319SA0, which payment shall be used by Seller solely to pay      the costs of a qualified well field technician.  Such well field      technician shall be primarily dedicated to Seller’s Site and shall,      personally or through a designated backup reasonably acceptable to      Purchaser, be required to be on call seven (7) days a week, twenty-four      (24) hours a day, and his/her primary purpose shall be to assist the      operation of Seller’s Landfill Gas collection system at Seller’s Site in      cooperation with Purchaser as provided herein.  As used in this      section, “primarily dedicated” means that such technician shall spend at      least an average of thirty (30) hours during each week at Seller’s Site,      computed on a quarterly basis.  The well field technician shall      so assist Purchaser in tuning wells with the objective of optimizing the      production of Qualifying Landfill Gas, so long as such tuning does not      cause Seller’s noncompliance with Environmental Laws or otherwise      interfere with Seller’s operations as contemplated in Article      2.7.  Purchaser shall have the right to communicate on an as      needed basis directly with the well field technician and provide input on      the tuning of the wells, including the diversion of poor quality wells to      Seller’s Flare, and such input shall be incorporated into the practices of      the well field technician unless such input contributes to Seller’s      non-compliance with Environmental Laws or permits or creates unsafe      conditions.  Payment by Purchaser to Seller of the amount for      such technician shall be made at times and by methods mutually agreed upon      by the Parties.  At Purchaser’s sole cost and expense, Purchaser      shall provide the well technician with a portable gas chromatograph, and      shall replace or repair such equipment in the event of malfunction, and      instruct the technician how to use the  instrument; |
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|  | (c) | Seller      shall install and maintain the landfill cap at Seller’s Site in accordance      with regulatory requirements and authorizations.  Seller will      provide to Purchaser copies of any proposals it makes with regard to its      proposed closure and post-closure plans to give Purchaser the opportunity      to make recommendations with regard to the closing of Seller’s Site and      the expansion, operation and maintenance of the Landfill Gas collection      facilities to maximize the collection of Qualifying Landfill      Gas.  If any of Purchaser’s recommendations are acceptable to      Seller and the implementation thereof results in any incremental cost or      expense to Seller, Purchaser shall agree to bear responsibility for such      incremental cost and expense.  Seller shall not unreasonably      deny, delay, or condition any such recommendation of      Purchaser. |
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|  | (d) | Seller      shall maintain the gas wells in accordance with all applicable laws, and      with the objective of maximizing the delivery of Qualifying Landfill Gas      to Purchaser, subject to the provisions of Article 2.7 and any other      limitations set forth in thisAgreement; |
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|  | (e) | Seller      shall tie future Landfill Gas collection facilities at Seller’s Site into      the existing Landfill Gas collection and distribution system so that any      future quantities of Landfill Gas are available to Purchaser at the      Delivery Point; and |
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|  | (f) | Seller      shall notify the Purchaser of an outage for scheduled maintenance of      Seller’s Facilities as soon as reasonably practicable, but in no event      less than ten (10) days in advance.  Such scheduled maintenance      shall be coordinated with Purchaser so as to minimize any interference      with the operation of the Purchaser’s Facilities.  For      non-scheduled or emergency maintenance of Seller’s Facilities, Seller      shall notify Purchaser as soon as reasonably practicable after it becomes      aware of such required maintenance.  Purchaser shall notify      Seller of an outage for scheduled maintenance of Purchaser’s Facilities as      soon as reasonably practicable, but in no event less than ten (10) days in      advance.  Such scheduled maintenance shall be coordinated with      Seller so as to minimize any interference with the operations of      Seller.  For non-scheduled or emergency maintenance of      Purchaser’s Facilities, Purchaser shall notify Seller as soon as      reasonably practicable after it becomes aware of such required      maintenance. |
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| 4.4 | Purchaser      Operations.  Purchaser shall be obligated to comply with      all requirements and obligations that relate to Purchaser and Purchaser’s      purchase, processing or transmission of the Landfill      Gas.  Purchaser shall use commercially reasonable efforts to      increase the Landfill Gas processing capacity of its processing facilities      to accommodate any increase in the supply of Qualifying Landfill Gas      resulting from any expansion or other modification of, or physical change      to, Seller’s Site or Seller’s Facilities.  The Parties      anticipate that, as of the Commercial Operations Date, the Purchaser’s      Facilities will have a processing capacity of at least two thousand two      hundred (2,200) standard cubic feet of Landfill Gas per      minute. |
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| 4.5 | Commercial Operations      Date.  Purchaser anticipates that the Commercial      Operations Date will occur prior to December 31, 2010 (the “Target      Date”).  If the Commercial Operations Date has not occurred by      that time, Seller agrees not to exercise its option to terminate as      provided in Article 6.2(d), and will provide Purchaser an extension beyond      that date, but in no event later than December 31, 2012 (the “Extension      Date”), so long as Purchaser pays Seller fifty percent (50%) of the      applicable compensation that would have been paid to Seller if Purchaser      were to have processed and sold all Qualifying Landfill Gas made available      by Seller at the then current NEW YORK MERCANTILE EXCHANGE monthly      settling price for Natural Gas (“NYMEX”) (using the same assumptions for      determining assumed Gross Revenues as described in Article 4.2); provided,      however, the Target Date and the Extension Date shall be extended without      additional payment by Purchaser (i) to the extent any such delay is a      result of Seller’s breach of any term or condition of this Agreement,      and/or (ii) to the extent any such delay is a result of Purchaser’s or      Seller’s inability, with the exercise of due diligence, to obtain the      permits or approvals necessary to conduct the operations contemplated by      this Agreement, and/or (iii) to the extent any such delay is a result of      AGL’s failure to complete construction of the pipeline(s) necessary to      transport the Landfill Gas from Purchaser’s Site, and/or (iv) by the      number of days that Purchaser can reasonably demonstrate that its ability      to achieve Commercial Operations prior to the Target Date were caused      primarily by Seller’s closure and/or post-closure      activities.  Any delay of the nature described in subsection      (iv) above shall be taken into account only if Purchaser can demonstrate      that Seller’s closure/post-closure activities demonstrably affected      Purchaser’s ability to construct and put in place in a timely manner      Purchaser’s Facilities at Seller’s Site necessary to process and transmit      Landfill Gas or negatively affect the quality of the Landfill Gas such      that it does not meet the standards set forth in Article    7.1. |
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| 4.6 | Purchaser      Modifications.  In addition to any rights or remedies it      may have elsewhere in this Agreement, Purchaser shall have the right,      subject to the prior written approval of Seller (which approval shall not      be unreasonably withheld, delayed or conditioned), and at Purchaser’ sole      cost and expense, to implement improvements and/or modifications and      related repairs to Seller’s Facilities that are intended to result in      enhanced quality or quantity of Qualifying Landfill Gas transmitted to the      Delivery Point (collectively, “Modifications”); provided that, in no way      limiting the foregoing, it shall be deemed reasonable for Seller to reject      any proposed Modifications that would increase Seller’s costs of operation      unless Purchaser agrees to reimburse Seller for such additional      incremental costs directly or through increased royalty payments to Seller      that result directly from the proposed Modifications.  To the      extent any such Modifications are necessary or would in the future be      necessary to enable Seller to comply with applicable laws, rules,      regulations, or orders, Purchaser may, subject to amendment of this      Agreement, at the time such Modifications are or become so necessary,      offset the reasonable cost of such Modifications against any amounts it      owes Seller under this Agreement; provided that Purchaser disclosed such      fact and the related costs in connection with the approval process; and      further provided, that if this Agreement terminates for any reason, other      than a breach hereof by Purchaser, before Purchaser has been reimbursed      such cost, then Seller shall pay Purchaser the remaining unreimbursed      amount in cash within thirty (30) days following such      termination. |
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|   | Any      such Modifications made by Purchaser to Seller’s Facilities shall become      the sole property and responsibility of Seller upon completion      thereof.  Should there be an interruption or cessation of, or a      material reduction in, the anaerobic generation of Landfill Gas from      Seller’s Site, such that Purchaser cannot draw Landfill Gas therefrom,      Seller’s obligation to install new wells, piping and other equipment shall      be limited to such changes and corrective measures as are required by      applicable laws, rules and regulations in the landfill      industry.  However, the provisions set forth in this Article 4.6      regarding Purchaser’s right to implement Modifications shall continue to      apply. |
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| 4.7 | Implementation of      Purchaser Modifications.  Prior to making any      Modifications, Purchaser shall provide Seller with a full set of plans and      drawings of such Modifications, such that Seller can conduct a design      review and approval, which approval may be withheld in Seller’s sole and      absolute discretion.  Seller shall complete any design review      within thirty (30) days after receipt of the full set of plans and      drawings; provided, however, that if Seller does not approve such plans      and drawings in writing within such thirty (30) day period, Seller shall      be deemed to have not approved such plans and      drawings.  Seller’s review and/or approval of such plans and      drawings shall not be deemed a warranty or representation of any kind as      to the design, suitability, capability or expected performance of any      Modifications.  Seller’s failure to review and/or approve such      plans or drawings shall not release Purchaser from any obligations      hereunder nor shall it be deemed a waiver of any of Seller’s rights or      remedies under this Agreement.  Title to all Modifications that      are permanently affixed to Seller’s Facilities or Seller’s Site (which      excludes Purchaser’s Site and Purchaser’s Facilities) shall pass to Seller      free and clear of all liens, claims, encumbrances and security interests      as of the date of the incorporation of such equipment into Seller’s      Facilities or Seller’s Site, as applicable, and Purchaser shall execute      and deliver to Seller such lien waivers and other documents reasonably      requested by Seller. |
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| 5.1 | Title to Landfill      Gas.  Subject to Purchaser’s rights set out in Article      7.5, title to and control and possession of the Landfill Gas sold      hereunder shall pass from Seller to and be absolutely vested in Purchaser      at the Delivery Point, and liability for and the risk of loss of such      Landfill Gas shall follow title; provided that nothing in the preceding      sentence shall affect Seller’s obligations or liabilities under this      Agreement. |
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| 6.1 | Term.  This      Agreement shall become effective on the Effective Date and, unless      terminated in whole or part earlier as provided in this Article 6, shall      continue in effect through the Contract Term, and after the expiration of      the Contract Term, this Agreement may be extended for successive terms      only upon the mutual written agreement of the Parties, in their      discretion. |
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| 6.2 | Seller’s Right to      Terminate.  Seller may terminate this Agreement by      written notice to Purchaser upon the occurrence of any of the following      events: |
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|   | (a) | Purchaser      fails to perform any material obligation hereunder, and fails to cure such      failure to perform within thirty (30) days after receipt of Seller’s      notice of such failure of performance, or if such cure cannot be completed      in thirty (30) days, Purchaser fails to promptly initiate, diligently      pursue, and implement such cure in a prompt fashion, taking into      consideration the nature of the circumstances; provided that in no event      shall the cure period be extended longer than a total of one hundred      eighty (180) days; or |
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|   | (b) | Purchaser      has breached any material representation, warranty, covenant or agreement      contained in this Agreement; or |
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|   | (c) | Purchaser      fails to perform its obligations under this Agreement due to an event of      Force Majeure that lasts longer than one hundred eighty (180) days,      provided that Seller is willing and able during such time to deliver      Qualifying Landfill Gas to Purchaser hereunder; provided however, Seller      may not terminate the Agreement under this subsection (c) if, at the end      of such 180-day period, Purchaser commences paying Seller fifty percent      (50%) of the applicable compensation that would have been paid to Seller      if Purchaser were to have processed and sold all Qualifying Landfill Gas      made available by Seller using the same procedures as are contained in      Article 4.5 above; or |
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|   | (d) | The      Commercial Operations Date, or any  extension thereof authorized      by this Agreement or otherwise agreed to by the Parties, does not occur as      set forth in Article 4.5 hereof through no fault of Seller;    or |
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|   | (e) | If      Purchaser should file a petition for an order of relief under the United      States Bankruptcy Code (11 U.S.C.), make a general assignment for the      benefit of its creditors, or if a receiver should be appointed on account      of insolvency.  Purchaser shall notify Seller of any voluntary      Bankruptcy filings within 10 days offiling; |
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|   | (f) | If,      following the eighteen (18) month anniversary of the Commercial Operations      Date, and within any Contract Year, Purchaser shall fail to process and      sell or otherwise pay Seller for at least fifty percent (50%) of the      Qualifying Landfill Gas made available by Seller over a rolling one hundred eighty      (180)-day period, other than as the result of an event of Force Majeure,      Seller’s failure to deliver such Qualifying Landfill Gas to Purchaser, or      Seller’s breach of any term or condition of this Agreement;    or |
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|   | (g) | Any      change in applicable law or other event adversely affects Seller’s      Facilities, Seller’s Site, or Seller’s ability to fulfill its obligations      under this Agreement such that to continue to perform hereunder would be      unlawful or commercially unreasonable;or |
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|  | (h)  | Purchaser      shall abandon Purchaser’s Site for a period of one hundred eighty (180)      days or shall abandon its duties or obligations hereunder for a period of      one hundred eighty (180) days, after the notice and right to cure      provisions in Article 6.2(a) have been  satisfied. |
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| 6.3 | Purchaser’s Right to      Terminate.  Purchaser may terminate this Agreement by      written notice to Seller upon the occurrence of any of the following      events: |
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|   | (a) | Seller      fails to perform any material obligation hereunder, and fails to cure such      failure to perform within thirty (30) days after receipt of Purchaser’s      notice of such failure of performance, or if such cure cannot be completed      in thirty (30) days, Seller fails to promptly initiate, diligently pursue,      and implement such cure in a prompt fashion, taking into consideration the      nature of the circumstances; provided that in no event shall the cure      period be extended longer than a total of one hundred eighty (180) days;      or |
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|   | (b) | Seller      has breached any material representation, warranty, covenant or agreement      contained in this Agreement; or |
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|   | (c) | Through      no fault, negligence or lack of diligence of Purchaser, the termination or      expiration of any necessary right of way or easement related to the      Purchaser’s Facilities, Purchaser’s Site, or Purchaser’s business      operations as to this Agreement which right of way or easement is not      under the control of Seller; or |
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|   | (d) | Purchaser’s      Facilities and/or Purchaser’s business is no longer economically viable      through no fault of Purchaser, provided that Purchaser must provide a      financial demonstration to the Seller of (i) actual cumulative loss over      six (6) consecutive      operating months, and (ii) a reasonable forecast of continued financial      losses over the next twelve (12) month period;  or |
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|   | (e) | If,      following the Commercial Operations Date, to the extent Landfill Gas is      otherwise available, Seller fails to make available to Purchaser      substantially all of the Landfill Gas, other than as the result of (i) an      event of Force Majeure or (ii) the reduction in the maximum amount of      Landfill Gas Seller is required to make available to Purchaser pursuant to      the provisions of Article 4.2; or. |
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|   | (f) | Any      change in applicable law or other event materially and adversely affects      the Purchaser’s Facilities, Purchaser’s Site, Purchaser’s business      operations or Purchaser’s ability to fulfill its obligations under this      Agreement; or |
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|   | (g) | Seller      fails to perform its obligations under this Agreement due to an event of      Force Majeure that lasts longer than one hundred eighty (180) days,      provided that Purchaser is willing and able during such time to accept      Landfill Gas from Seller hereunder;or |
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|  | (h)  | If      Seller should file a petition for an order of relief under the United      States Bankruptcy Code (11 U.S.C.), make a general assignment for the      benefit of its creditors, or if a receiver should be appointed on account      of insolvency.  Seller shall notify Purchaser of any voluntary      Bankruptcy filings within 10 days offiling. |
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| 6.4 | Effect of      Termination.  Upon termination authorized by Articles      6.2(c), 6.2(d), 6.2(f), 6.2(g), 6.3(c), 6.3(d), 6.3(f) or 6.3(g) of this      Agreement,  neither Party shall have any further obligation to      the other, including, without limitation, liability for payment of      compensatory or consequential damages resulting from such termination,      except that: (i) Purchaser shall remain obligated to pay Seller as      provided herein for Gross Revenue derived from all Landfill Gas delivered      hereunder prior to the time of termination, and (ii) Seller shall remain      obligated to pay Purchaser the amounts provided for in Articles 4.6 and      4.7, if any, in accordance with the terms thereof.  Except as      limited by the provisions of Article 10.4, upon termination authorized by      any other provision of this Article 6, the Parties may pursue all remedies      available to each at law or in equity, by statute or      otherwise.  Notwithstanding anything else herein to the      contrary, the indemnification obligations of Article 10 shall remain in      effect notwithstanding the termination of this      Agreement.  Should either Party terminate this Agreement as      authorized by this Agreement, Purchaser shall be obligated to remove      Purchaser’s Facilities from Seller’s Site within a reasonable time not to      exceed two hundred seventy (270) days after such    termination. |
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| 7.1 | Landfill Gas      Quality.  To the extent that any Landfill Gas made      available to Purchaser does not meet the following minimum standards,      Purchaser, as its sole remedy, shall have no obligation to purchase and/or      accept any Landfill Gas that does not meet such standards: four hundred      and fifty (450) BTU per cubic foot (when the gas is saturated with water      vapor, at a base temperature of sixty (60) degrees Fahrenheit and at a      base pressure of 14.73 pounds per square inch absolute (PSIA)) and not      contain in excess of 10% Nitrogen or 2%Oxygen. |
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| 7.2 | Quality Initiatives      and Capabilities.  Subject to Article 2.7 specifying the      priority of Seller’s operations, Seller shall cooperate with Purchaser to      develop appropriate quality initiatives and capabilities at Seller’s Site      with the objective of making available to Purchaser the maximum quantity      of Qualifying Landfill Gas.  In addition to the other rights      granted Purchaser in this Agreement, Purchaser shall have the right to      make recommendations with regards to such qualitative initiatives and      capabilities; provided, however, that Purchaser may request that any      information that is disclosed be held confidential pursuant to Article      13.12 of this Agreement.  Purchaser shall have the right to make      reasonable requests for meetings to review Seller’s progress regarding to      this Article 7.2. |
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| 7.3 | Limited      Warranty.  EXCEPT AS EXPRESSLY PROVIDED IN THIS      AGREEMENT, SELLER MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING      FITNESS FOR A PARTICULAR PURPOSE, RELATED TO THE QUALITY OF THE LANDFILL      GAS.  IN NO WAY LIMITING THE FOREGOING, AND NOTWITHSTANDING      ANYTHING HEREIN TO THE CONTRARY, SELLER DOES NOT WARRANT THE RATES OF      PRODUCTION, QUANTITY OR QUALITY OF LANDFILL GAS RESULTING FROM THE      BIOLOGICAL DECOMPOSITION OF SOLID WASTES IN SELLER’S SITE, AND PURCHASER      ACKNOWLEDGES THAT IT IS RELYING SOLELY ON ITS OWN EVALUATION OF SELLER’S      SITE.  SELLER MAKES NO REPRESENTATION OR WARRANTY AS TO THE      ACCURACY OR COMPLETENESS OF ANY INFORMATION THAT MAY HAVE BEEN PROVIDED TO      PURCHASER AS PART OF ITS DUE DILIGENCE REVIEW.  MOREOVER,      PURCHASER RECOGNIZES THAT LANDFILL GAS MAY CONTAIN CORROSIVE OR      DELETERIOUS SUBSTANCES.  SELLER SHALL HAVE NO OBLIGATION TO PAY      COSTS FOR REPAIR OR REPLACEMENT OF THE PURCHASER’S FACILITIES OR ANY      COMPONENT PARTS THEREOF OWNED BY PURCHASER, ITS AFFILIATES OR ANY OTHER      PERSON, CAUSED BY SUCH SUBSTANCES. |
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| 7.4 | Disposal of      Condensate.  Seller shall be responsible for the disposal      of condensate materials, leachate, and liquids produced on Seller’s      Site.  Purchaser shall be responsible for the disposal of      condensate materials, leachate, and liquids produced from its processing      facilities or otherwise after the Delivery Point.  The removal,      management, characterization, and disposal of free liquids, leachate      and/or condensate contained in Landfill Gas after the Delivery Point shall      be at the sole cost and expense of Purchaser.  Seller shall      accept into its wastewater management system all condensate from the      processing equipment on Purchaser’s Site that does not violate the      acceptance criteria of the commercial wastewater treatment plant that      Seller uses for treatment and disposal of its own      wastewater.  Either party may collect samples of condensate from      Purchaser’s Facilities as needed.  The party wishing to collect      samples shall provide at least five (5)-days advance notice of its      intention to collect samples so that the other party may witness the      sample collection.  Purchaser shall be responsible for and pay      Seller, at Seller’s cost, on a per gallon basis, the wastewater treatment      costs incurred by Seller in proportion to the volume of condensate offered      by Purchaser to Seller for inclusion in Seller’s wastewater management      system.  To the extent reasonably practicable, and subject to      the other limitations and restrictions set forth herein, Seller and      Purchaser agree to work together to utilize liquids collected from      Seller’s Site in a mutually beneficial manner, including, without      limitation, seeking authorization to reintroduce such liquids into      Seller’s Site, if such reintroduction would likely increase the generation      of Qualifying Landfill Gas and can technically, feasibly and reasonably be      incorporated into the design and operation of Seller’s    Site. |
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| 7.5 | Disposal of Landfill      Gas Not Used by Purchaser.  Unless otherwise permitted      hereunder or required by any applicable law, no Landfill Gas purchased or      accepted by Purchaser hereunder, or any component or characteristic of      such Landfill Gas, shall be returned to Seller or Seller’s Site without      prior written consent of Seller.  Seller shall, at its sole cost      and expense, dispose of any Landfill Gas not required to be purchased      and/or accepted by Purchaser under this Agreement in full compliance with      all applicable laws, regulations and permit conditions, including without      limitation Environmental Laws.  All Landfill Gas purchased or      accepted by Purchaser hereunder, or any component or characteristic of      such Landfill Gas, that is not processed or otherwise sold by Purchaser      shall be disposed of by Purchaser, at its sole cost and expense, in full      compliance with all applicable laws, regulations and permit conditions,      including without limitation Environmental Laws.  In addition to      the foregoing, Seller hereby agrees to accept redelivery of Landfill Gas      from Purchaser under the condition that Purchaser is required to purge its      Purchaser’s Facilities of Landfill Gas due to: 1) start-up operations, 2)      to perform maintenance, and/or 3) to recycle Landfill Gas that is not      Qualifying Landfill Gas. |
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| 8.1 | Metering      Equipment.  Purchaser shall, at no cost to Seller,      install, operate and maintain in accurate working order, metering devices,      mutually acceptable to the Parties for the measurement of flow and quality      (including Btu per cubic foot) at the Delivery      Point.  The metering devices at the Delivery Point shall measure      the flow and quality of Landfill Gas delivered to      Purchaser.  Seller shall have access to the metering and      measurement equipment at reasonable times upon prior notice, and Purchaser      may have its representativepresent. |
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| 8.2 | Meter      Tests.  Purchaser shall, at its expense, keep the      measurement and metering equipment specified in Article 8.1 accurate and      in good repair and calibration, making such periodic tests, as Purchaser      deems necessary, but at least twice each year.  Purchaser shall      give Seller reasonable advance notice of any such test so Seller may have      its representative(s) present.  Seller may request additional      special tests and calibration of the metering and measurement equipment      two (2) times each year.  The expense of such special tests      shall be borne by Seller if the equipment is found to be inaccurate by      less than three percent (3%).  If, upon any test, the equipment      is found to be inaccurate by three percent (3%) or more, the cost of      special test shall be borne by Purchaser and meter readings and invoices      shall be corrected for a period extending back to the immediately      preceding test or special test andcalibration. |
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|  | (a) | Meter Out of      Service.  If, for any reason, the metering or measurement      equipment at the Delivery Point is out of service such that the amount of      Landfill Gas delivered and the BTU value cannot be ascertained, Purchaser      will notify Seller within twenty four (24) hours.  During the      period when the metering or measurement equipment is out of service, the      Parties shall utilize the metering and measurement records from similar      periods within the immediately preceding thirty (30)  days. |
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| 9.1 | Project Development      Payment.  To induce Seller to enter into this Agreement,      no later than the earlier of December 31, 2008, or thirty days after      execution of this Agreement (or the first business day thereafter, if the      thirtieth day falls on a Saturday, Sunday, or a legal holiday) (the      “Payment Date”), Purchaser shall pay to Seller a nonrefundable payment      (except as provided in Article 2.8) in the amount of two million seven      hundred fifty thousand dollars ($2,750,000) (the “Project Development      Payment”) in immediately available funds.  If for any reason the      Project Development Payment has not been wired to Seller’s account with      confirmation no later than noon MST on the Payment Date, Seller, at its      option, may terminate this Agreement without liability or obligation to      Purchaser (other than the return of the Project Development Payment if it      is later received). |
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| 9.2 | Compensation.  During      the term of this Agreement, Purchaser shall pay Seller for Landfill Gas      received at the Delivery Point a royalty of *****.  In      addition to the foregoing compensation, certain Environmental Attributes      will be shared in the manner described in Article 9.5, and Purchaser shall      be responsible for payments to Seller for the well field technician as      described in Article 4.3(b). |
|-----|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| 9.3 | Calculation of Amounts      Due.  On or before the fifteenth (15th)      day after each Accounting Period, Purchaser shall invoice its Gas Buyer(s)      for Landfill Gas delivered and sold during such Accounting      Period.  Within thirty (30) days receipt of payment from Gas      Buyer(s), Purchaser shall remit to Seller a statement disclosing all      information necessary to determine the amount due to      Seller.  Each such statement shall be accompanied by a payment      by Purchaser of any undisputed amounts due to Seller with respect to such      Accounting Period.  Purchaser agrees to exercise commercially      reasonable efforts to collect all amounts due from Gas Buyer(s) in a      timely manner. |
|-----|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| 9.4 | Payment      Terms.  Purchaser shall pay to Seller, at the address for      payments set forth below, in immediately available funds the amount due      Seller.  Purchaser shall pay Seller in the manner and at the      time set forth in this Article 9.  To the extent any undisputed      payment is not made on or before the payment due date, or if any payment      is determined to be due as the result of an audit described in Article      9.6, such late payment shall accrue interest at the rate of prime rate as      published in the Wall Street Journal from time to time plus two percent      (2%) from the date that such payment wasdue. |
|-----|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

----

| Payments shall be to: |   | Attn:      General Manager                                            |
|-----------------------|--------|-----------------------------------------------------------------------|
|                  |   | Allied      Waste Systems                                             |
|                  |   | 323      Marble Mill Road                                             |
|                  |   | Marietta,      Georgia 30060                                          |
|                  |   |                                                                  |
| and      copy to:     |   | Attn:  Senior      Director of Renewable Energy Development |
|                  |   | Allied      Waste Industries                                          |
|                  |   | 18500      North Allied Way                                           |
|                  |   | Phoenix,      Arizona85054                                            |

| 9.5 | Sharing of Certain      Environmental Attributes; Reimbursement of Certain Other      Payments.  Except as otherwise provided in Articles 3.1      and 3.3 or elsewhere herein, Purchaser and Seller will share equally any      Environmental Attributes secured in association with (i) the sale or      processing of Landfill Gas to Purchaser, and (ii) Purchaser’s operations      at or relating to Purchaser’s Site or the Purchaser’s      Facilities.  In addition, if Seller, in Seller’s sole      discretion, pays any amount required to be paid by Purchaser directly      pursuant to this Agreement, Purchaser shall reimburse Seller for such      payment within ten (10) days after Seller notifies Purchaser and provides      proof of such payment.  Seller agrees to give Purchaser advance      notice of its intent to make any such payments.  If Purchaser      does not reimburse Seller for such payments during the ten (10) day      period, interest shall begin to accrue on the unpaid amounts at an annual      rate equal to two percent (2%) plus the prime rate of interest as      published in the Wall Street Journal from time to  time. |
|-----|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| 9.6 | Liability for      Taxes.  Seller shall pay or cause to be paid all taxes      and assessments imposed on Seller with respect to the sale of Landfill Gas      and the ownership and operation of Seller’s      Facilities.  Purchaser shall pay or cause to be paid all taxes      and assessments imposed upon Purchaser with respect to the purchase,      processing, transmission and/or sale of Landfill Gas and the ownership and      operation of the Purchaser’s Facilities.  In addition, Purchaser      shall reimburse Seller in the event the value of the Purchaser’s      Facilities or any other equipment of Purchaser, or any part thereof, is      assessed against any property of Seller.  Except as provided in      the preceding sentence, neither Party shall be responsible or liable for      any taxes nor any other statutory charges levied or assessed against any      of the facilities of the other Party used for the purpose of carrying out      the provisions of this Agreement.  Each Party shall be      responsible for securing its own sales tax exemptions, if      applicable. |
|-----|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

----

| 9.7 | Records.  Purchaser      shall maintain books, records, documents, accounts and other evidence of      (i) Landfill Gas flow and quality, and (ii) amounts due to Seller under      this Agreement in accordance with generally accepted accounting principles      and practices consistently applied.  Seller or its designee,      during Purchaser’s normal business hours and upon five (5) days prior      written notice, shall have access to Purchaser’s books, records,      documents, accounts and other evidences, including, without limitation,      applicable Gas Purchase Contracts, pertaining to amounts due to Seller      hereunder, and Landfill Gas flow and quality, for the purpose of      inspection, auditing and copying.  With regard to the foregoing      inspection, auditing, and copying rights, Purchaser agrees to exercise any      similar rights that it may have under any Gas Purchase Contract on behalf      or for the benefit of Seller upon Seller’s reasonable      request.  Purchaser shall preserve and shall make such books,      records, documents, accounts and other evidences available to Seller or      its designee at no charge for a minimum period of five (5) years      following the month of the relevant delivery of Landfill Gas under this      Agreement.  Purchaser shall have the right, during Seller’s      normal business hours, to inspect, audit and copy Seller’s books, records      documents and accounts and other evidence pertaining directly to this      Agreement.  The review by either Party of the books and records      of the other Party shall be subject to the confidentiality obligations set      forth in Article 13.12. |
|-----|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| 9.8 | Electricity.  Purchaser      shall pay for or reimburse Seller for electricity used by Seller’s blowers      to deliver Landfill Gas to the Delivery Point, but not for the electricity      used to deliver non-Qualifying Landfill Gas to Seller’s      Flare.  The Parties shall mutually agree on an equitable method      to allocate electricity usage between Seller’s blower and Seller’s Flare      (i.e.,      separate meters). |
|-----|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| 10.1 | Seller’s      Indemnity.  Seller agrees to defend, indemnify and hold      harmless Purchaser (including its officers, directors, members, employees,      agents, representatives, contractors and subcontractors) from and against      any and all liabilities (including third party liabilities), claims,      injuries (including death resulting therefrom), property damage, fine,      penalty or assessment by any public agency (insofar as not prohibited by      law), cost or expense (including cost of defense, settlement and      reasonable attorney’s fees), which (i) are directly or indirectly caused      by any wrongful act or omission of Seller and/or its officers, directors,      employees, agents, representatives, contractors or subcontractors      associated with, or arising from Seller’s performance or nonperformance of      its obligations under this Agreement or any other agreement between the      parties, (ii) any wrongful act or omission of Seller, its officers,      directors, employees, agents, representatives, contractors or      subcontractors associated with, or arising from the ownership or operation      of Seller’s Facilities and Seller’s Site, (iii) any breach of any      applicable governmental laws, regulations or ordinances, and (iv) any and      all Environmental Claims (as hereinafter defined) brought against      Purchaser located at or otherwise relating to Seller’s Site or Seller’s      business, or Purchaser’s Site or Purchaser’s business, to the extent      arising out of circumstances that (a) exist at the Effective Date, or (b)      which come into existence thereafter otherwise than as a result of the      matters described in Article 10.2 below, or (c) are caused by or result      from a breach of this Agreement by Seller or the negligence or willful      misconduct of Seller.  As used herein “Environmental Claims”      means all claims, demands, suits, causes of action or injuries to persons      or property damage arising out of a violation of Environmental      Laws. |
|------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

----

| 10.2 | Purchaser’s      Indemnity.  Purchaser agrees to defend, indemnify and      hold harmless Seller (including its officers, directors, members,      employees, agents, representatives, contractors, subcontractors,      successors and assigns), from and against any and all liabilities      (including third party liabilities), claims, injuries (including death      resulting therefrom), property damage, fine, penalty or assessment by any      public agency (insofar as not prohibited by law), cost or expense      (including costs of defense, settlement and reasonable attorneys’ fees),      which (i) are directly or indirectly caused solely by any wrongful act or      omission of Purchaser and/or its officers, directors, employees, agents,      representatives, contractors or subcontractors associated with, or arising      from Purchaser’s performance or nonperformance of its obligations under      this Agreement or any other agreement between the parties, (ii) any      wrongful act or omission of Purchaser, its officers, directors, employees,      agents, representatives, contractors or subcontractors associated with, or      arising from Purchaser’s business operations, (iii) any breach of any      applicable governmental laws, regulations or ordinances, and (iv) any and      all Environmental Claims brought against Seller located at or otherwise      relating to Seller’s Site or Seller’s business, or Purchaser’s Site or      Purchaser’s business, to the extent arising out of the operation of      Purchaser’s Facilities or which otherwise come into existence as (or      arises out of) circumstances caused by a result of a breach of this      Agreement by Purchaser or the negligence or willful misconduct of      Purchaser. |
|------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| 10.3 | Comparative      Fault.  The Parties agree that principles of comparative      fault shall govern this indemnityobligation. |
|------|---------------------------------------------------------------------------------------------------------------------------------------|

| 10.4 | Limitation of      Damages.  Notwithstanding anything herein to the      contrary, neither Party shall have any liability to the other for      incidental, indirect, punitive, or consequential  damages. |
|------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| 11.1 | Purchaser.  Purchaser      represents and warrants to Seller asfollows: |
|------|-----------------------------------------------------------------------------------|

|   | (a) | Purchaser      is a limited liability company duly organized and validly existing under      the laws of the State of Georgia, with full legal right, power and      authority to enter into and to fully and timely perform its obligations      hereunder. |
|--------|-----|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (b) | Purchaser      has duly authorized, executed and delivered this Agreement, and this      Agreement constitutes a legal, valid and binding obligation, enforceable      against Purchaser in accordance with itsterms. |
|--------|-----|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (c) | Other      than as previously disclosed in writing by Purchaser to Seller, Purchaser      has no knowledge of any action, suit or proceeding, at law or in equity,      before or by any court or Governmental Authority, pending or threatened      against Purchaser, in which an unfavorable decision, ruling or finding      would materially adversely affect the performance by Purchaser of its      obligations hereunder or the other transactions contemplated hereby, or      that, in any way, would materially adversely affect the validity or      enforceability of thisAgreement. |
|--------|-----|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

----

|   | (d) | Neither      the execution or delivery by Purchaser of this Agreement, nor the      performance by it of its obligations in connection with the transactions      contemplated hereby or the fulfillment of the terms and conditions hereof      conflicts with, violates or results in a breach of any constitution, law      or governmental regulation applicable to it, or materially conflicts with,      violates or results in a breach of any term or condition of any order,      judgment, or decree or any agreement of instrument to which Purchaser is a      party or by which Purchaser or any of its properties or assets are bound,      or constitutes a defaultthereunder. |
|--------|-----|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (e) | No      approval, authorization, order, consent, declaration, registration or      filing with any federal, state or local governmental authority or      referendum of voters is required for the valid execution and delivery of      this Agreement by Purchaser, except such as have been disclosed to Seller      and have been duly obtained ormade. |
|--------|-----|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| 11.2 | Seller.  Seller      represents and warrants to Purchaser asfollows: |
|------|--------------------------------------------------------------------------------|

|   | (a) | Seller      is limited liability company duly organized and validly existing under the      laws of the State of Delaware, with full legal right, power and authority      to enter into and to fully and timely perform its obligations      hereunder. |
|--------|-----|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (b) | Seller      has duly authorized, executed and delivered this Agreement, and this      Agreement constitutes a legal, valid and binding obligation of Seller,      enforceable against Seller in accordance with its  terms. |
|--------|-----|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (c) | Other      than as previously disclosed in writing by Seller to Purchaser, Seller has      no knowledge of any action, suit or proceeding, at law or in equity,      before or by any court or Governmental Authority, pending or threatened      against Seller, in which an unfavorable decision, ruling or finding would      materially adversely affect the performance by Seller of its obligations      hereunder or the other transactions contemplated hereby, or that, in any      way, would materially adversely affect the validity or enforceability of      this Agreement. |
|--------|-----|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (d) | No      approval, authorization, order, consent, declaration, registration or      filing with any federal, state or local governmental authority or      referendum of voters is required for the valid execution and delivery of      this Agreement by Seller, except such as have been disclosed to Purchaser      and have been duly obtained ormade. |
|--------|-----|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

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|   | (e) | Neither      the execution or delivery by Seller of this Agreement, nor the performance      by it of its obligations in connection with the transactions contemplated      hereby or the fulfillment of the terms and conditions hereof conflicts      with, violates or results in a breach of any constitution, law or      governmental regulation applicable to it, or materially conflicts with,      violates or results in a breach of any term or condition of any order,      judgment, or decree or any agreement of instrument to which Seller is a      party or by which Seller or any of its properties or assets are bound, or      constitutes a defaultthereunder. |
|--------|-----|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (f) | No      approval, authorization, order, consent, declaration, registration,      agreement or filing with DeKalb County, a political subdivision of the      State of Georgia, is required for the valid execution and delivery of this      Agreement by Seller. |
|--------|-----|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (g) | Seller      has good and marketable title to the Landfill Gas, free and clear of all      security interests, liens, claims or encumbrances of any nature or kind      whatsoever in favor of any third party, including, but not limited to any      Governmental Authority. |
|--------|-----|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| 12.1 | Purchaser’s Insurance      Requirements.  During the term of this Agreement,      Purchaser shall maintain the following minimum insurance coverages, either      by one or more policies, including in combination with an excess liability      policy: |
|------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| Workers’      Compensation:                  |                                                                                                   |
|----------------------------------------------------|--------------------------------------------------------------------------------------------------------|
| Coverage      A                                    | Statutory                                                                                              |
| Coverage      B – Employer’s Liability | $2,000,000      each accident/$2,000,000      aggregate                                                |
|                                               | $2,000,000      each employee by disease                                                               |
|                                               | $2,000,000      policy limit by disease                                                                |
|                                               |                                                                                                   |
| Automobile      Liability:                         |                                                                                                   |
| Bodily      Injury/Property Damage                 | $3,000,000      per accident/$3,000,000 aggregate                                                      |
| Combined      – Single Limit                 | Coverage      is to apply to all owned, non-owned, hired and leased vehicles (including      trailers) |
|                                               |                                                                                                   |
| Commercial      General Liability:                 |                                                                                                   |
| Bodily      Injury/Property Damage                 | $5,000,000 eachoccurrence                                                                              |
| Combined      – Single Limit                 | $10,000,000      general and complete operations aggregate                                             |
|                                               |                                                                                                   |
| Pollution      Legal Liability                     |                                                                                                   |
| Limits                                             | $1,000,000      per incident/$1,000,000aggregate                                                       |

| 12.2 | Seller’s Insurance      Requirements.  During the term of this Agreement, Seller      shall maintain the following minimum insurance coverages, either by one or      more policies, including in combination with an excess liability      policy: |
|------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

----

| Workers’      Compensation:                  |                                                                                                   |
|----------------------------------------------------|--------------------------------------------------------------------------------------------------------|
| Coverage      A                                    | Statutory                                                                                              |
| Coverage      B – Employer’s Liability | $2,000,000      each accident/$2,000,000      aggregate                                                |
|                                               | $2,000,000      each employee by disease                                                               |
|                                               | $2,000,000      policy limit by disease                                                                |
|                                               |                                                                                                   |
| Automobile      Liability:                         |                                                                                                   |
| Bodily      Injury/Property Damage                 | $3,000,000      per accident                                                                           |
| Combined      – Single Limit                 | Coverage      is to apply to all owned, non-owned, hired and leased vehicles (including      trailers) |
|                                               |                                                                                                   |
| Commercial      General Liability:                 |                                                                                                   |
| Bodily      Injury/Property Damage                 | $5,000,000 eachoccurrence                                                                              |
| Combined      – Single Limit                 | $10,000,000      general and complete operations  aggregates                                 |
|                                               |                                                                                                   |
| Pollution      Legal Liability                     |                                                                                                   |
| Limits                                             | $1,000,000      perincident                                                                            |

| 12.3 | General      Provisions.  All deductibles in the above-described      insurance policies shall be at the respective Party’s sole      risk.  Each Party agrees to provide the other Party with      immediate notification of the receipt of any notice of cancellation or      intended cancellation of any of its required insurance.  The      insurance carriers providing the coverage required by this Article shall      be rated at least A- VIII by A.M.      Best.  All such insurance shall be written as primary,      noncontributing (except for claims arising out of sole      negligence).  With the exception of the workers’ compensation      policy, each Party’s insurance coverage, as required herein, will show the      other Party as an additional insured as its interests may appear, and      shall include a waiver of subrogation provision in favor of the other      Party. |
|------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

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| 12.4 | Certificates of      Insurance.  Each Party hereto shall provide to the other      Party certificates of insurance each year during the term of this      Agreement to evidence that the required insurance coverage is in effect at      all times during the term hereof. |
|------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| 13.1 | Assignment.  This      Agreement may not be assigned by either party without the prior written      approval of the other party, which consent shall not be unreasonably      withheld, conditioned or delayed; provided that (i) Seller may assign all      of its rights, duties and obligations hereunder to a third party purchaser      of Seller’s Site, Seller or substantially all of the assets of Seller      without the written consent of Purchaser (provided that in any event such      purchaser agrees in a writing in form and substance reasonably      satisfactory to Purchaser to assume all of Seller’s duties and obligations      hereunder), and (ii) upon thirty (30) days written notice to Seller,      Purchaser may, without the written consent of Seller, assign all of its      rights, duties and obligations hereunder to (a) an Affiliate of Purchaser,      subject to the continuing obligation of Purchaser hereunder; or (b) on or      following the Commercial Operations Date, a third-party purchaser of      Purchaser or of substantially all of the assets of Purchaser, which shall      include, without limitation, Purchaser’s facilities and operations at Live      Oak if such facilities and operations are then owned by Purchaser      (provided that such purchaser agrees in a writing in form and substance      reasonably satisfactory to Seller to assume all of Purchaser’s duties and      obligations hereunder).  Further, both Seller and Purchaser      shall each have the right to assign this Agreement without the written      consent of the other Party hereto as a collateral assignment to any lender      to Seller or Purchaser, as applicable, or any of its Affiliates; provided      that the form of collateral assignment shall be subject to the prior      review and approval of the non-assigning party, such approval not to be      unreasonably withheld, conditioned, or delayed.  Notwithstanding      anything herein to the contrary, and in no way limiting the foregoing,      Purchaser acknowledges and agrees that Seller's refusal to consent to a      proposed assignment shall not be deemed unreasonable if, among other      things, (i)  Purchaser has not purchased Landfill Gas from      Seller in accordance with this Agreement for a period of twelve (12)      consecutive months after the Commercial Operations Date, (ii) Seller (or      any of its Affiliates) has a significant or material history of litigation      or disputes involving the proposed assignee or any of its Affiliates, or      (iii) the assignee is unwilling to assume all of Purchaser’s duties and      obligations hereunder in a writing addressed to Seller.  All      covenants, terms, conditions, and provisions of this Agreement shall be      binding upon the Parties hereto and shall extend to and be binding upon      the successors and permitted assigns of the Parties  hereto. |
|------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| 13.2 | Notices.  All      notices, requests, demands, statements and or payment provided for herein      shall be in writing and sent to the Parties hereto at the following      addresses: |
|------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

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| Seller:            | Attn:      General Manager                                            |
|--------------------|-----------------------------------------------------------------------|
|               | Allied      Waste Systems                                             |
|               | 323      Marble Mill Road                                             |
|               | Marietta,      Georgia 30060                                          |
|               |                                                                  |
| With      copy to: | Attn:  Senior      Director of Renewable Energy Development |
|               | c/o      Allied Waste Industries, Inc.                                |
|               | 18500      North Allied Way                                           |
|               | Phoenix,      Arizona 85054                                           |
|               |                                                                  |
| and      copy to:  | Attn:  Barry      Shelley                                   |
|               | c/o      Fennemore Craig                                              |
|               | 3003      North Central Avenue, Suite 2600                            |
|               | Phoenix,      Arizona 85012                                           |
|               |                                                                  |
| Purchaser:         | Attn:  Mike      Ellis                                      |
|               | President                                                             |
|               | GES      Live Oak – Hickory Ridge, LLC                          |
|               | Suite      250, Tower Place 200                                       |
|               | 3348      Peachtree Road, NE                                          |
|               | Atlanta,      Georgia 30326                                           |

| 13.3 | Publicity and      Corporate Identity.  The Parties shall not use the name,      trade name, trademarks, service marks owned by the other Party, or logos      of the other Party in any publicity releases, news releases, annual      reports, product packaging, signage, stationary, print literature,      advertising, or websites without securing the prior written approval of      the other Party.  The Parties shall not, without prior written      consent of the other Party, represent, directly or indirectly, that any      product or service offered by the Party has been approved or endorsed by      the other Party. |
|------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| 13.4 | Entire      Agreement.  This Agreement is intended by the Parties as      the expression of their agreement with respect to such subject matter,      both written and oral, and supersedes all previous      agreements.  This Agreement may be modified only by a written      amendment executed by both Parties. |
|------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| 13.5 | Fees.  Except      as otherwise provided herein, the Parties shall pay their own expenses      including attorney’s fees, incident to the preparation and performance of      this Agreement, whether or not the transactions contemplated herein are      consummated. |
|------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

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| 13.6 | Governing Law; Venue;      Jurisdiction; Attorneys’ Fees.  This Agreement shall be      governed by and construed in accordance with the internal laws of the      State of Georgia, without giving effect to any choice or conflict of law      provision or rule (whether of the State of Georgia or any other      jurisdiction) that would cause the application of the laws of any      jurisdiction other than the State of Georgia.  Notwithstanding      the foregoing, any legal action arising under or in connection with this      Agreement or any other instrument, document or agreement executed or      delivered in connection with this Agreement, or in any way connected with      or related or incidental to the dealings of the Parties with respect to      this Agreement or such other instrument, document or agreement or the      transactions contemplated herein (“Dispute”) shall be brought exclusively      in the state or federal courts located in Fulton County,      Georgia.  By execution and delivery of this Agreement, with      respect to Disputes each of the Parties knowingly, voluntarily and      irrevocably:  (a) consents, for itself and in respect of its      property, to the exclusive jurisdiction of these courts; (b) waives any      immunity or objection, including any objection to personal jurisdiction or      the laying of venue or based on the grounds of forum non conveniens, which      it may have from or to the bringing of the Dispute in such jurisdiction;      (c) waives any personal service of any summons, complaint or other process      that may be made by any other means permitted by the State of Georgia; (d)      waives any right to trial by jury; (e) agrees that any such Dispute shall      be decided by court trial without a jury; and (f) agrees that any Party to      this Agreement may file an original counterpart or a copy of this Article      with any court as written evidence of the consents, waivers and agreements      of the Parties set forth in this Article.  Should any litigation      be commenced under this Agreement, the successful Party in such litigation      shall be entitled to recover, in addition to such other relief as the      court may award, its reasonable attorneys’ fees, expert witness fees,      litigation related expenses, and court or other costs incurred in such      litigation or proceeding. |
|------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| 13.7 | Force      Majeure.  No liability shall result to either Party from      delay in performance or from nonperformance caused by acts of God,      strikes, lockouts or other industrial labor disturbances, acts of the      public enemy, wars, blockades, insurrections, riots, epidemics,      landslides, lightning, earthquakes, fires, storms, hurricanes, floods,      high-water washouts, civil disturbances, explosions, freezing of wells or      lines of pipe, partial or entire failure of wells or supply of Landfill      Gas caused directly or indirectly by any of the foregoing occurrences,      enactment of statutes, laws, or regulations, acts of governmental bodies      and any other cause or causes, whether of the kind herein enumerated or      otherwise, not reasonably within the control of the Party affected (each a      “Force Majeure”); provided that inability to make payments that does not      result from any of the foregoing shall not be considered an event of Force      Majeure.  The affected Party shall promptly notify the other      Party, in writing, of the Force Majeure, its extent and probable duration      thereof, and shall be diligent in attempting to remove the cause(s)      thereof. |
|------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| 13.8 | Contractor.  It      is understood that the employees, subcontractors, methods, equipment, and      facilities of the Parties shall at all times be under their respective      exclusive direction and control.  Purchaser’s relationship to      Seller shall be that of an independent contractor.  Nothing in      this Agreement shall be construed to constitute Seller or Purchaser, or      any of its or their employees or subcontractors, as an agent, associate,      joint venturer or partner of the otherParty. |
|------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

----

| 13.9 | Headings;      Severability.  The headings appearing in this Agreement      are intended for convenience and reference only, and are not to be      considered in construing this Agreement.  Every provision of      this Agreement is intended to be severable.  If any term or      provision hereof is illegal or invalid for any reason whatsoever, such      illegality or invalidity shall not affect the validity or legality of the      remainder of this Agreement. |
|------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| 13.10 | No      Waiver.  No delay or omission to exercise any right or      power shall be construed to be a waiver of any default or acquiescence      therein or a waiver of any right or power, and every such right and power      may be exercised from time to time and as often as may be deemed      expedient.  Either Party’s acceptance of any performance due      hereunder that does not comply strictly with the terms hereof shall not be      deemed to be waiver of any right of such Party to strict performance by      the other Party.  Acceptance of past due amounts or partial      payments shall not constitute a waiver of full and timely payment of any      sums due hereunder. |
|-------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| 13.11 | Interpretation.  The      terms and provisions are not to be construed more liberally in favor of,      nor more strictly against, either Party.  To the extent the      mutual covenants of the Parties under this Agreement create obligations      that extend beyond the termination or expiration of this Agreement, the      applicable provisions of this Agreement shall be deemed to survive such      termination or expiration for the limited purpose of enforcing such      covenants and obligations in accordance with the terms of this      Agreement. |
|-------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| 13.12 | Confidential      Information.  Either Party may designate any data,      information, reports, or documents provided to the other as “Confidential      Information.”  Except as required by law, neither Party shall,      without the prior written consent of the other Party, disclose any      Confidential Information obtained from the other Party to any third      Parties other than to any lender and prospective lender, consultants, or      to employees who have agreed to keep such information confidential as      contemplated by this Agreement and who need the information to assist      either Party with the rights and obligations contemplated      herein.  Confidential Information shall not include information      that is: (i) or becomes generally known or available by publication,      commercial use or otherwise through no breach of this Agreement by the      receiving Party; (ii) known by the receiving Party before receipt of the      Confidential Information from the originating Party; (iii) independently      developed by the receiving Party or its directors, officers, employees,      agents, legal counsel or consultants without reference to the originating      Party’s Confidential Information; (iv) lawfully obtained from a third      party who has the right to make such disclosure; or (v) deliberately      released for publication by the originating Party in    writing. |
|-------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| 13.13 | Third Party      Beneficiaries.  This Agreement is intended to be solely      for the benefit of the Parties hereto and their successors and permitted      assignees and is not intended to and shall not confer any rights or      benefits on any other third party not a signatory hereto, except as      explicitly provided with respect to anylender. |
|-------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

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| 13.14 | Recitals and      Exhibits.  All recitals set forth in, and exhibits      attached to, this Agreement are incorporated herein by this      reference. |
|-------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------|

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| Purchaser                                     |              | Seller                                                   |
|-----------------------------------------------|-------------------|----------------------------------------------------------|
|                                          |              |                                                     |
| GES      Live Oak – Hickory Ridge, LLC, |              | BFI      Waste Systems of North America, LLC,            |
| a      Georgia limited liability company      |              | a      Delaware limited liability company                |
|                                          |              |                                                     |   |
| By:                                           | /s/ David R. Ames |                                                     | By: | /s/ Theodore Neura |
|                                          |              |                                                     |   |   |
|                                          |              |                                                     |   |
| Print      Name:  David R. Ames     |              | Print      Name:  Theodore Neura               |
|                                          |              |                                                     |
| Title:  CEO                         |              | Title:  Senior      Director, Renewable Energy |
|                                          |              |         Development                            |
|                                          |              |                                                     |
| Date:      November 14, 2008                  |              | Date:      November 14,  2008                            |

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|                          |                                                                | PAGE                      |
|-------------------------------|---------------------------------------------------------------------|---------------------------|
| SECTION      1.               | PROPERTY      DESCRIPTION                                           |  1                   |
| SECTION      2.               | TERM                                                                |  1                   |
| SECTION      3.               | WARRANTY      OF TITLE AND QUIET ENJOYMENT                          |  1                   |
| SECTION      4.               | RENT                                                                | 1                         |
| SECTION      5.               | USE,      IMPROVEMENTS AND EQUIPMENT                                |  2                   |
| SECTION      6.               | TAXES      AND ASSESSMENTS                                          |  5                   |
| SECTION      7.               | DESTRUCTION      OF BUILDINGS                                       |   5             |
| SECTION      8.               | WASTE      PRODUCTS AND PERMITS                                     |   6             |
| SECTION      9.               | CONDEMNATION                                                        |     6 |
| SECTION      10.              | DEFAULT                                                             |   6             |
| SECTION      11.              | PROHIBITION      AGAINST LESSEE CREATING LIENS AGAINST PREMISES     |   7             |
| SECTION      12.              | INSURANCE                                                           |   7             |
| SECTION      13.              | INDEMNITY                                                           |   7             |
| SECTION      14.              | WAIVERS                                                             |   7             |
| SECTION      15.              | NOTICES                                                             |   8             |
| SECTION      16.              | WARRANTY                                                            |   8             |
| SECTION      17.              | EASEMENTS                                                           |   9             |
| SECTION      18.              | ENTIRE      AGREEMENT                                               |   9             |
| SECTION      19.              | GOVERNING      LAW; VENUE; JURISDICTION; ATTORNEY’S      FEES | 10                        |
|                          |                                                                |                      |
| SECTION      20.              | ASSIGNMENT                                                          | 10                        |
| SECTION      21.              | BINDING      EFFECT                                                 | 10                        |
| SECTION      22.              | BROKERAGE                                                           | 10                        |
| SECTION      23.              | HEADINGS      AND TITLES                                            | 10                        |
| SECTION      24.              | SEVERABILITY                                                        | 11                        |
| SECTION      25.              | NO      PARTNERSHIP                                                 | 11                        |
| SECTION      26.              | CONFLICTS      WITH PURCHASE AGREEMENT                              | 11                        |
| ATTACHMENT A   | PREMISES      DESCRIPTION                                           |                      |
| ATTACHMENT      B             | DELIVERY      POINT                                                 |                      |

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| 5.  | USE, IMPROVEMENTS AND      EQUIPMENT. |
|----------|---------------------------------------|

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| Lessor:            | Attn:      General Manager                                            |
|--------------------|-----------------------------------------------------------------------|
|               | Allied      Waste Systems                                             |
|               | 323      Marble Mill Road                                             |
|               | Marietta,      Georgia 30060                                          |
|               |                                                                  |
| With      copy to: | Attn:  Senior      Director of Renewable Energy Development |
|               | c/o      Allied Waste Industries, Inc.                                |
|               | 18500      North Allied Way                                           |
|               | Phoenix,      Arizona 85054                                           |
|               |                                                                  |
| and      copy to:  | Attn:  Barry      Shelley                                   |
|               | c/o      Fennemore Craig                                              |
|               | 3003      North Central Avenue, Suite 2600                            |
|               | Phoenix,      Arizona 85012                                           |
|               |                                                                  |
| Lessee:            | Attn:  Mike      Ellis                                      |
|               | President,      GES Live Oak – Hickory Ridge, LLC               |
|               | Suite      250, Tower Place 200                                       |
|               | 3348      Peachtree Road, NE                                          |
|               | Atlanta,      Georgia 30326                                           |

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| LESSEE:                                             |   | LESSOR:                                                  |
|-----------------------------------------------------|--------|----------------------------------------------------------|
|                                                |   |                                                     |
| GES      Live Oak – Hickory Ridge, LLC,       |   | BFI      Waste Systems of North America, LLC,            |
| a      Georgia limited liability company            |   | a      Delaware limited liability company                |
|                                                |   |                                                     |
| By:      _________________________________________  |   | By:      ______________________________________________  |
|                                                |   |                                                     |
| Print      Name: __________________________________ |   | Print      Name: _______________________________________ |
|                                                |   |                                                     |
| Title:      _______________________________________ |   | Title:      ____________________________________________ |
|                                                |   |                                                     |
| Date:________________      , 20__                   |   | Date:      ________________ , 20__                       |

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