##### Table of Contents



United States
Securities and Exchange Commission
 Washington, D.C. 20549
 Form 10-K
  þ
    
    ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES EXCHANGE ACT OF 1934
 For the fiscal year ended December 31, 2009
 o
    
    TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES EXCHANGE ACT OF 1934
 For the transition period from  to
 Commission file number 333-127355
 ATLAS AMERICA PUBLIC #15-2005 (A) L.P.
  Delaware
(State or other jurisdiction of 
incorporation or organization)
    
    20-3208344
(I.R.S. Employer
Identification No.)
 Westpointe Corporate Center One1550 Coraopolis Heights Rd. 2nd FloorMoon Township, PA
    
    15108(Address of principal executive offices)
    
    (zip code)
 (412) 262-2830
  Title of each class 
None
    
    Name of each exchange on which registered
None
 
 Yes o No
þ
 Yes o No þ
 Yes þ No o
 10-K
þ
  Large accelerated filer o
    
    Accelerated filer o
    
    Non-accelerated filer o
    
    Smaller reporting company þ
 Yes  ̈
No þ
 DOCUMENTS INCORPORATED BY REFERENCE: None




---



##### 



ATLAS AMERICA PUBLIC #15-2005 (A) L.P.
(A DELAWARE LIMITED PARTNERSHIP)
INDEX TO ANNUAL REPORT
ON FORM 10-K
 PAGEPART IItem 1: Business
    
    
    3-5Item 2: Properties
    
    
    5-10Item 3: Legal Proceedings
    
    
    10Item 4: (Removed and Reserved)
    
    
    10PART IIItem 5: Market for Registrants Common Equity and Related Security Holder Matters
    
    
    10-11Item 7: Managements Discussion and Analysis of Financial Condition or Plan of Operations
    
    
    11-15Item 8: Financial Statements
    
    
    16-36Item 9: Changes in and Disagreements with Accountants on Accounting and Financial Disclosure
    
    
    36Item 9A: Controls and Procedures
    
    
    36-37Item 9B: Other Information
    
    
    37PART IIIItem 10: Directors and Executive Officers of the Registrant
    
    
    37-39Item 11: Executive Compensation
    
    
    40Item 12: Security Ownership of Certain Beneficial Owners and Management
    
    
    40Item 13: Certain Relationships and Related Party Transactions
    
    
    40Item 14: Principal Accountant Fees and Services
    
    
    41PART IVItem 15: Exhibits
    
    
    41SIGNATURES
    
    
    42Exhibit 23.1Exhibit 31.1Exhibit 31.2Exhibit 32.1Exhibit 32.2Exhibit 99.1
   2




---



##### Table of Contents



The matters discussed within this report include forward-looking statements. These statements
may be identified by the use of forward-looking terminology such as anticipate, believe,
continue, could, estimate, expect, intend, may, might, plan, potential,
predict, should, or will, or the negative thereof or other variations thereon or comparable
terminology. In particular, statements about our expectations, beliefs, plans, objectives,
assumptions or future events or performance contained in this report are forward-looking
statements. We have based these forward-looking statements on our current expectations,
assumptions, estimates and projections. While we believe these expectations, assumptions, estimates
and projections are reasonable, such forward-looking statements are only predictions and involve
known and unknown risks and uncertainties, many of which are beyond our control. These and other
important factors may cause our actual results, performance or achievements to differ materially
from any future results, performance or achievements expressed or implied by these forward-looking
statements.
 
 PART I
 
 ITEM 1.
    
    DESCRIPTION OF BUSINESS
 General.
       3




---



##### Table of Contents




    
    well tending, routine maintenance and adjustment;
 
    
    reading meters, recording production, pumping, maintaining appropriate books and
records; and
 
    
    preparation of reports for us and government agencies.
  Markets and Competition.
  Governmental Regulation.
 Regulation of oil and gas producing activities.
  4




---



##### Table of Contents




    
    new well permit and well registration requirements, procedures and fees;
 
    
    minimum well spacing requirements;
 
    
    restriction on well locations and underground gas storage;
 
    
    certain well site restoration, groundwater protection and safety measures;
 
    
    landowner notification requirements;
 
    
    certain bonding or other security measures;
 
    
    various reporting requirements;
 
    
    well plugging standards and procedures; and
 
    
    broad enforcement powers.
 Environmental and Safety Regulation.
  Where can you find more information.
  
 
 ITEM 2.
    
    DESCRIPTION OF PROPERTIES
 Drilling Activity .
 Summary of Producing Wells .
 Number of Producing WellsGross
    
    
    NetGas
    
    
    187
    
    
    
    181.50
  5




---



##### Table of Contents



Production.
 AverageYear
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    Production CostEnded
    
    Production
    
    
    Average Sales Price
    
    
    (Lifting Cost)December 31,
    
    Oil (bbls)(1)
    
    
    Gas (mcf)(1)
    
    
    per bbl(1) (3) (5)
    
    
    per mcf(1) (3) (4)
    
    
    per mcfe(1) (2)2009
    
    
    2,000
    
    
    
    529,400
    
    
    $
    61.33
    
    
    $
    7.82
    
    
    $
    2.742008
    
    
    3,000
    
    
    
    923,600
    
    
    $
    90.42
    
    
    $
    9.49
    
    
    $
    2.18
 
 (1)
    
    Mcf represents one thousand cubic feet of natural gas. Mcfe represents a
thousand cubic feet equivalent. Oil production is converted to mcfe at the rate of six
mcf per barrel (bbl).(2)
    
    Lifting costs include labor to operate the wells and related equipment, repairs
and maintenance, materials and supplies, property taxes, insurance and gathering
charges.(3)
    
    Average sales prices represent accrual basis pricing after reversing the effect
of previously recognized gains resulting from prior period impairment charges.(4)
    
    Average gas prices are calculated by including in total revenue derivative gains
previously recognized into income and dividing by the total volume for the period.
Previously recognized derivative gains were $1,595,300 and $81,800 for the years ended
December 31, 2009 and 2008, respectively. The derivative gains are included in other
comprehensive income and resulted from prior period impairment charges.(5)
    
    Average oil prices are calculated by including in total revenue derivative gains
previously recognized into income and dividing by the total volume for the period.
Previously recognized derivative gains were $31,200 for the year ended December 31,
2009. The derivative gains are included in other comprehensive income and resulted from
prior period impairment charges. Natural Gas and Oil Reserve Information.
 
    
    Introduce a new definition of oil and gas producing activities. This new definition
allows companies to include in their reserve base volumes from unconventional resources.
Such unconventional resources include bitumen extracted from oil sands and oil and gas
extracted from coal beds and shale formations.
 
    
    Report oil and gas reserves using an unweighted average price using the prior 12-month
period, based on the closing prices on the first day of each month, rather than year-end
pricing. This should maximize the comparability of reserve estimates among companies and
mitigate the distortion of the estimates that arises when using a single pricing date.
 
    
    Permit companies to disclose their probable and possible reserves on a voluntary basis.
Current rules limit disclosure to only proved reserves.
 
    
    Update and revise reserve definitions to reflect changes in the oil and gas industry and
new technologies. New updated definitions include by geographic area and reasonable
certainty.
 
    
    Permit the use of new technologies to determine proved reserves if those technologies
have been demonstrated empirically to lead to reliable conclusions about reserves volumes.
 
    
    Require additional disclosures regarding the qualifications of the chief technical
person who oversees the companys overall reserve estimation process. Additionally,
disclosures are required related to internal controls over reserve estimation, as well as a
report addressing the independence and qualifications of a companys reserves preparer or
auditor based on Society of Petroleum Engineers criteria.
   6




---



##### Table of Contents



December 31,2009
    
    
    2008Natural gas (per mcf)
    
    $
    3.87
    
    
    $
    5.71Oil (per bbl)
    
    
    61.18
    
    
    
    44.80
   7




---



##### Table of Contents



At December 31,2009
    
    
    2008Natural gas reserves  Proved Reserves (Mcf) (1)(4):Proved developed reserves (2)
    
    
    2,902,700
    
    
    
    6,601,900Total proved reserves of natural gas
    
    
    2,902,700
    
    
    
    6,601,900Oil reserves  Proved Reserves (Bbl) (1)(4):Proved developed reserves (2)
    
    
    9,600
    
    
    
    12,300Total proved reserves of oil
    
    
    9,600
    
    
    
    12,300Total proved reserves (Mcfe)
    
    
    2,960,300
    
    
    
    6,675,700PV-10 estimate of cash flows of proved reserves (3)(4):Proved developed reserves
    
    $
    3,604,200
    
    
    $
    13,699,000Total PV-10 estimate
    
    $
    3,604,200
    
    
    $
    13,699,000PV-10 estimate per limited partner unit (5)
    
    $
    459
    
    
    $
    1,702Undiscounted estimate per limited partner unit (5)
    
    $
    669
    
    
    $
    3,051
 
 (1)
    
    Proved reserves generally refers to the estimated quantities of crude oil,
natural gas, and natural gas liquids which geological and engineering data demonstrate
with reasonable certainty to be recoverable in future years from known reservoirs under
existing economic and operating conditions, i.e., prices and costs as of the date the
estimate is made. Prices include consideration of changes in existing prices provided
only by contractual arrangements, but not on escalations based upon future conditions.
Reservoirs are considered proved if economic production is supported by either actual
production or conclusive formation test. The area of a reservoir considered proved
includes: that portion delineated by drilling and defined by gas-oil and/or oil-water
contacts, if any, and the immediately adjoining portions not yet drilled, but which can
be reasonably judged as economically productive on the basis of available geological and
engineering data.(2)
    
    Proved developed reserves generally refers to reserves that can be expected to
be recovered through existing wells with existing equipment and operating methods.(3)
    
    The present value of estimated future net cash flows is calculated by discounting
estimated future net cash flows by 10% annually.(4)
    
    Please see Regulation S-X rule 4-10 for complete definitions of each reserve
category.(5)
    
    This value per $10,000 unit is determined by following the methodology used for
determining our proved reserves using the data discussed above. However, this value does
not necessarily reflect the fair market value of a unit, and each unit is illiquid.
Also, the value of a unit for purposes of presentment of the unit to our MGP for
purchase is different because it is calculated under a formula set forth in the
partnership agreement.   8




---



##### Table of Contents



Title to Properties
  Acreage.
 Developed AcreageLocation
    
    Gross(1)
    
    
    Net(2)Pennsylvania
    
    
    3,786.47
    
    
    
    3,680.60Tennessee
    
    
    800.00
    
    
    
    691.25Total
    
    
    4,586.47
    
    
    
    4,371.85
 
 (1)
    
    A gross acre is an acre in which we own a working interest.(2)
    
    A net acre represents the actual working interest we own in one gross acre
divided by one hundred. For example, a 50% working interest in an acre is one gross
acre, but a 0.5 net acre. Delivery Commitments.
    9




---



##### Table of Contents



ITEM 3.
    
    LEGAL PROCEEDINGS
   
 ITEM 4.
    
    (REMOVED AND RESERVED)
  
 PART II
 
 ITEM 5.
    
    MARKET FOR REGISTRANTS COMMON EQUITY AND RELATED SECURITY HOLDER MATTERS
 Market Information.
 
    
    our managing general partner consent;
 
    
    the transfer not result in materially adverse tax consequences to us; and
 
    
    the transfer not violate federal or state securities laws.
  
    
    the assignor gives the assignee the right;
 
    
    our managing general partner consents to the substitution;
 
    
    the assignee pays to us all costs and expenses incurred in connection with the
substitution; and
 
    
    the assignee executes and delivers the instruments, which our managing general
partner requires to effect the substitution and to confirm his or her agreement to be
bound by the terms of our partnership agreement.
  Holders.
 Distributions.
  10




---



##### Table of Contents




    
    $2,829,500 and $5,215,400 to our limited partners; and
 
    
    $849,300 and $2,560,900 to our managing general partner, respectively.
 
 ITEM 7.
    
    MANAGEMENTS DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION OR PLAN OF OPERATIONS
  General .
   11




---



##### Table of Contents



Results of Operations.
 Years Ended December 31,2009
    
    
    2008Production revenues (in thousands):Gas
    
    $
    2,544
    
    
    $
    8,680Oil
    
    
    92
    
    
    
    271Total
    
    $
    2,636
    
    
    $
    8,951Production volumes:Gas (mcf/day) (1)
    
    
    1,450
    
    
    
    2,524Oil (bbls/day) (1)
    
    
    5
    
    
    
    8Total (mcfe/day) (1)
    
    
    1,480
    
    
    
    2,572Average sales prices: (2)Gas (per mcf) (1) (3)
    
    $
    7.82
    
    
    $
    9.49Oil (per bbl) (1) (4)
    
    $
    61.33
    
    
    $
    90.42Average production costs:As a percent of revenues
    
    
    56
    %
    
    
    23
    %Per mcfe (1)
    
    $
    2.74
    
    
    $
    2.18Depletion per mcfe
    
    $
    2.93
    
    
    $
    4.79
 
 (1)
    
    Mcf represents thousand cubic feet, mcfe represents thousand cubic feet
equivalent and bbls represents barrels. Bbls are converted to mcfe using the ratio of
six mcfs to one bbl.(2)
    
    Average sales prices represent accrual basis pricing after reversing the effect
of previously recognized gains resulting from prior period impairment charges.(3)
    
    Average gas prices are calculated by including in total revenue derivative gains
previously recognized into income and dividing by the total volume for the period.
Previously recognized derivative gains were $1,595,300 and $81,800 for the years ended
December 31, 2009 and 2008, respectively. The derivative gains are included in other
comprehensive income and resulted from prior period impairment charges.(4)
    
    Average oil prices are calculated by including in total revenue derivative gains
previously recognized into income and dividing by the total volume for the period.
Previously recognized derivative gains were $31,200 for the year ended December 31,
2009. The derivative gains are included in other comprehensive income and resulted from
prior period impairment charges. Natural Gas Revenues .
   12




---



##### Table of Contents



Oil Revenues .
 Expenses.
    Liquidity and Capital Resources .
     13




---



##### Table of Contents



Critical Accounting Policies.
 Impairment of Long-Lived Assets.
 Fair Value of Financial Instruments
  Level 1 
 Level 2 
 Level 3
    14




---



##### Table of Contents



Reserve Estimates .
 Asset Retirement Obligations
 Working Interest .
  15




---



##### Table of Contents



ITEM 8.
    
    FINANCIAL STATEMENTS
 REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
 
    /s/ GRANT THORNTON LLPCleveland, Ohio
March 30, 2010
  16




---



##### Table of Contents



ATLAS AMERICA PUBLIC #15-2005 (A) L.P.

BALANCE SHEETS
DECEMBER 31,
 2009
    
    
    2008ASSETSCurrent assets:Cash and cash equivalents
    
    $
    161,500
    
    
    $
    464,500Accounts receivable-affiliate
    
    
    754,000
    
    
    
    1,551,800Short-term hedge receivable due from affiliate
    
    
    508,000
    
    
    
    1,724,600Total current assets
    
    
    1,423,500
    
    
    
    3,740,900Oil and gas properties, net
    
    
    17,108,600
    
    
    
    18,492,000Long-term hedge receivable due from affiliate
    
    
    417,700
    
    
    
    1,085,500$
    18,949,800
    
    
    $
    23,318,400LIABILITIES AND PARTNERS CAPITALCurrent liabilities:Accrued liabilities
    
    $
    60,200
    
    
    $
    22,200Short-term hedge liability due to affiliate
    
    
    6,100
    
    
    
    152,600Total current liabilities
    
    
    66,300
    
    
    
    174,800Asset retirement obligations
    
    
    1,961,000
    
    
    
    1,659,400Long-term hedge liability due to affiliate
    
    
    64,400
    
    
    
    137,300Partners capital:Managing general partner
    
    
    4,575,900
    
    
    
    5,944,000Limited partners (5,227.40 units)
    
    
    12,378,400
    
    
    
    15,460,600Accumulated other comprehensive loss
    
    
    (96,200
    )
    
    
    (57,700
    )Total partners capital
    
    
    16,858,100
    
    
    
    21,346,900$
    18,949,800
    
    
    $
    23,318,400
   17




---



##### Table of Contents



ATLAS AMERICA PUBLIC #15-2005 (A) L.P.
STATEMENTS OF OPERATIONS
YEARS ENDED DECEMBER 31, 2009 AND 2008
 2009
    
    
    2008REVENUESNatural gas and oil
    
    $
    2,635,500
    
    
    $
    8,951,200Interest income
    
    
    400
    
    
    
    7,000Total revenues
    
    
    2,635,900
    
    
    
    8,958,200COST AND EXPENSESProduction
    
    
    1,480,800
    
    
    
    2,052,000Depletion
    
    
    1,585,400
    
    
    
    4,509,500Impairment of oil and gas properties
    
    
    
    
    
    
    24,849,500Accretion of asset retirement obligation
    
    
    99,600
    
    
    
    85,000General and administrative
    
    
    241,600
    
    
    
    244,900Total expenses
    
    
    3,407,400
    
    
    
    31,740,900Net loss
    
    $
    (771,500
    )
    
    $
    (22,782,700
    )Allocation of net loss:Managing general partner
    
    $
    (1,500
    )
    
    $
    (2,765,400
    )Limited partners
    
    $
    (770,000
    )
    
    $
    (20,017,300
    )Net loss per limited partnership unit
    
    $
    (147
    )
    
    $
    (3,829
    )
   18




---



##### Table of Contents



ATLAS AMERICA PUBLIC #15-2005 (A) L.P.
STATEMENTS OF COMPREHENSIVE LOSS
YEARS ENDED DECEMBER 31, 2009 AND 2008
 2009
    
    
    2008Net loss
    
    $
    (771,500
    )
    
    $
    (22,782,700
    )Other comprehensive (loss) income:Unrealized holding (loss) gains on hedging contracts
    
    
    (101,200
    )
    
    
    112,000Less: reclassification adjustment for losses realized in net earnings
    
    
    62,700
    
    
    
    306,600Total other comprehensive (loss) income
    
    
    (38,500
    )
    
    
    418,600Comprehensive loss
    
    $
    (810,000
    )
    
    $
    (22,364,100
    )
   19




---



##### Table of Contents



ATLAS AMERICA PUBLIC #15-2005 (A) L.P.
STATEMENTS OF CHANGES IN PARTNERS CAPITAL
YEARS ENDED DECEMBER 31, 2009 AND 2008
 AccumulatedManaging
    
    
    
    
    
    
    OtherGeneral
    
    
    Limited
    
    
    ComprehensivePartner
    
    
    Partners
    
    
    (Loss) Income
    
    
    TotalBalance at December 31, 2007
    
    $
    10,428,600
    
    
    $
    40,693,300
    
    
    $
    (476,300
    )
    
    $
    50,645,600Participation in revenue and expenses:Net production revenues
    
    
    2,419,500
    
    
    
    4,479,700
    
    
    
    
    
    
    
    6,899,200Interest income
    
    
    2,500
    
    
    
    4,500
    
    
    
    
    
    
    
    7,000Depletion
    
    
    (779,000
    )
    
    
    (3,730,500
    )
    
    
    
    
    
    
    (4,509,500
    )Impairment of oil and gas properties
    
    
    (4,292,700
    )
    
    
    (20,556,800
    )
    
    
    
    
    
    
    (24,849,500
    )Accretion of asset retirement obligation
    
    
    (29,800
    )
    
    
    (55,200
    )
    
    
    
    
    
    
    (85,000
    )General and administrative
    
    
    (85,900
    )
    
    
    (159,000
    )
    
    
    
    
    
    
    (244,900
    )Net loss
    
    
    (2,765,400
    )
    
    
    (20,017,300
    )
    
    
    
    
    
    
    (22,782,700
    )Assets contributions
    
    
    841,700
    
    
    
    
    
    
    
    
    
    
    
    841,700Other comprehensive income
    
    
    
    
    
    
    
    
    
    
    418,600
    
    
    
    418,600Distributions to partners
    
    
    (2,560,900
    )
    
    
    (5,215,400
    )
    
    
    
    
    
    
    (7,776,300
    )Balance at December 31, 2008
    
    $
    5,944,000
    
    
    $
    15,460,600
    
    
    $
    (57,700
    )
    
    $
    21,346,900Participation in revenue and expenses:Net production revenues
    
    
    386,800
    
    
    
    767,900
    
    
    
    
    
    
    
    1,154,700Interest income
    
    
    100
    
    
    
    300
    
    
    
    
    
    
    
    400Depletion
    
    
    (274,100
    )
    
    
    (1,311,300
    )
    
    
    
    
    
    
    (1,585,400
    )Accretion of asset retirement obligation
    
    
    (33,400
    )
    
    
    (66,200
    )
    
    
    
    
    
    
    (99,600
    )General and administrative
    
    
    (80,900
    )
    
    
    (160,700
    )
    
    
    
    
    
    
    (241,600
    )Net loss
    
    
    (1,500
    )
    
    
    (770,000
    )
    
    
    
    
    
    
    (771,500
    )Other comprehensive loss
    
    
    
    
    
    
    
    
    
    
    (38,500
    )
    
    
    (38,500
    )Working interest adjustment
    
    
    (517,300
    )
    
    
    517,300
    
    
    
    
    
    
    
    Distributions to partners
    
    
    (849,300
    )
    
    
    (2,829,500
    )
    
    
    
    
    
    
    (3,678,800
    )Balance at December 31, 2009
    
    $
    4,575,900
    
    
    $
    12,378,400
    
    
    $
    (96,200
    )
    
    $
    16,858,100
   20




---



##### Table of Contents



ATLAS AMERICA PUBLIC #15-2005 (A) L.P.
STATEMENTS OF CASH FLOWS
YEARS ENDED DECEMBER 31, 2009 AND 2008
 2009
    
    
    2008Cash flows from operating activities:Net loss
    
    $
    (771,500
    )
    
    $
    (22,782,700
    )Adjustments to reconcile net loss to net cash provided by operating activities:Depletion
    
    
    1,585,400
    
    
    
    4,509,500Impairment of oil and gas properties
    
    
    
    
    
    
    27,369,700Non-cash loss (gain) on derivative
    
    
    1,626,500
    
    
    
    (2,438,400
    )Accretion of asset retirement obligation
    
    
    99,600
    
    
    
    85,000Increase (decrease) in accrued liabilities
    
    
    38,000
    
    
    
    (12,700
    )Decrease in accounts receivable-affiliate
    
    
    797,800
    
    
    
    759,800Net cash provided by operating activities
    
    
    3,375,800
    
    
    
    7,490,200Cash flows from financing activities:Distributions to partners
    
    
    (3,678,800
    )
    
    
    (7,776,300
    )Net cash used in financing activities
    
    
    (3,678,800
    )
    
    
    (7,776,300
    )Net decrease in cash and cash equivalents
    
    
    (303,000
    )
    
    
    (286,100
    )Cash and cash equivalents at beginning of period
    
    
    464,500
    
    
    
    750,600Cash and cash equivalents at end of period
    
    $
    161,500
    
    
    $
    464,500Supplemental Schedule of non-cash investing and financing activities:Assets contributed by managing general partner:Tangible equipment
    
    $
    
    
    
    $
    206,100Lease costs
    
    
    
    
    
    
    22,900Intangible drilling costs
    
    
    
    
    
    
    612,700$
    
    
    
    $
    841,700Asset retirement obligation
    
    $
    202,000
    
    
    $
    157,400
   21




---



##### Table of Contents



ATLAS AMERICA PUBLIC #15-2005 (A) L.P.
NOTES TO FINANCIAL STATEMENTS
DECEMBER 31, 2009 AND 2008
 NOTE 1  DESCRIPTION OF BUSINESS
   NOTE 2  SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
  Use of Estimates
  Account Receivable and Allowance for Possible Losses
   22




---



##### Table of Contents



ATLAS AMERICA PUBLIC #15-2005 (A) L.P.
NOTES TO FINANCIAL STATEMENTS  (Continued)
DECEMBER 31, 2009 AND 2008
 NOTE 2  SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Continued)
 Revenue Recognition
   Fair Value of Financial Instruments
   Supplemental Cash Flow Information
  Concentration of Credit Risk
  Comprehensive Loss
   23




---



##### Table of Contents



ATLAS AMERICA PUBLIC #15-2005 (A) L.P.
NOTES TO FINANCIAL STATEMENTS  (Continued)
DECEMBER 31, 2009 AND 2008
 NOTE 2  SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Continued)
 Working Interest
  Oil and Gas Properties
   December 31,2009
    
    
    2008Natural gas and oil properties:Proved properties:Leasehold interests
    
    $
    1,526,600
    
    
    $
    1,526,600Wells and related equipment
    
    
    64,512,600
    
    
    
    64,310,60066,039,200
    
    
    
    65,837,200Accumulated depletion
    
    
    (48,930,600
    )
    
    
    (47,345,200
    )$
    17,108,600
    
    
    $
    18,492,000
  24




---



##### Table of Contents



ATLAS AMERICA PUBLIC #15-2005 (A) L.P.
NOTES TO FINANCIAL STATEMENTS  (Continued)
DECEMBER 31, 2009 AND 2008
 NOTE 2  SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Continued)
   Asset Retirement Obligation
  Environmental Matters
    25




---



##### Table of Contents



ATLAS AMERICA PUBLIC #15-2005 (A) L.P.
NOTES TO FINANCIAL STATEMENTS  (Continued)
DECEMBER 31, 2009 AND 2008
 NOTE 2  SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Continued)
 Major Customers
  Income Taxes
  Recently Adopted Accounting Standards
   
    
    Introduce a new definition of oil and gas producing
activities. This new definition allows companies to include
in their reserve base volumes from unconventional resources.
Such unconventional resources include bitumen extracted from
oil sands and oil and gas extracted from coal beds and shale
formations;
 
    
    Report oil and gas reserves using an unweighted average
price using the prior 12-month period, based on the closing
prices on the first day of each month, rather than year-end
pricing. This should maximize the comparability of reserve
estimates among companies and mitigate the distortion of the
estimates that arises when using a single pricing date;
 
    
    Permit companies to disclose their probable and possible
reserves on a voluntary basis. Current rules limit
disclosure to only proved reserves;
  26




---



##### Table of Contents



ATLAS AMERICA PUBLIC #15-2005 (A) L.P.
NOTES TO FINANCIAL STATEMENTS  (Continued)
DECEMBER 31, 2009 AND 2008
 NOTE 2  SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Continued)
 Recently Adopted Accounting Standards (Continued)
 
    
    Update and revise reserve definitions to reflect changes in
the oil and gas industry and new technologies. New updated
definitions include by geographic area and reasonable
certainty;
 
    
    Permit the use of new technologies to determine proved
reserves if those technologies have been demonstrated
empirically to lead to reliable conclusions about reserves
volumes; and
 
    
    Require additional disclosures regarding the qualifications
of the chief technical person who oversees the companys
overall reserve estimation process. Additionally,
disclosures are required with regard to internal controls
over reserve estimation, as well as a report addressing the
independence and qualifications of a companys reserves
preparer or auditor based on Society of Petroleum Engineers
criteria.
     27




---



##### Table of Contents



ATLAS AMERICA PUBLIC #15-2005 (A) L.P.
NOTES TO FINANCIAL STATEMENTS  (Continued)
DECEMBER 31, 2009 AND 2008
 NOTE 2  SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Continued)
 Recently Adopted Accounting Standards (Continued)
      28




---



##### Table of Contents



ATLAS AMERICA PUBLIC #15-2005 (A) L.P.
NOTES TO FINANCIAL STATEMENTS  (Continued)
DECEMBER 31, 2009 AND 2008
 NOTE 3  PARTICIPATION IN REVENUES AND COSTS
  ManagingGeneral
    
    
    LimitedPartner
    
    
    PartnersOrganization and offering costs
    
    
    100
    %
    
    
    0
    %Lease costs
    
    
    100
    %
    
    
    0
    %Revenues (1)
    
    
    33.50
    %
    
    
    66.50
    %Operating costs, administrative costs, direct costs and all other operating costs (2)
    
    
    33.50
    %
    
    
    66.50
    %Intangible drilling costs
    
    
    1.29
    %
    
    
    98.71
    %Tangible equipment costs
    
    
    66.26
    %
    
    
    33.74
    %
 (1)
    
    Subject to the MGPs subordination obligation, substantially all partnership
revenues will be shared in the same percentage as capital contributions are to the
total partnership capital contributions, except that the MGP will receive an additional
7% of the partnership revenues. The MGP revenue percentage may not exceed 40%.(2)
    
    These costs will be charged to the partners in the same ratio as the related
production revenues are credited. NOTE 4  CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS
  
    
    Administrative costs which are included in general and administrative expenses in the
Partnerships Statements of Operations are payable at $75 per well, per month.
Administrative costs incurred in 2009 and 2008 were $157,600 and $163,200, respectively.
 
    
    Monthly well supervision fees which are included in production expenses in the
Partnerships Statements of Operations are payable at $296 per well, per month in 2009 and
2008, for operating and maintaining the wells. Well supervision fees incurred in 2009 and
2008 were $622,900 and $644,200, respectively.
 
    
    Transportation fees which are included in production expenses in the Partnerships
Statements of Operations are generally payable at 13% of the natural gas sales price.
Transportation fees incurred in 2009 and 2008 were $512,600 and $1,057,400, respectively.
 
    
    Direct costs which are included in production and general administrative expenses in the
Partnerships Statements of Operations are payable to the MGP and its affiliates as
reimbursement for all costs expended on the Partnerships behalf. Direct costs incurred in
2009 and 2008 were $429,300 and $432,100, respectively.
 
    
    Assets contributed from the MGP, which are disclosed in the Partnerships Statement of
Cash Flows as a non-cash activity for the year ended December 31, 2008, were $841,700.
  29




---



##### Table of Contents



ATLAS AMERICA PUBLIC #15-2005 (A) L.P.
NOTES TO FINANCIAL STATEMENTS  (Continued)
DECEMBER 31, 2009 AND 2008
 NOTE 5  COMMITMENTS
   NOTE 6  SUBORDINATION BY MANAGING GENERAL PARTNER
  NOTE 7  DERIVATIVE INSTRUMENTS
    30




---



##### Table of Contents



ATLAS AMERICA PUBLIC #15-2005 (A) L.P.
NOTES TO FINANCIAL STATEMENTS  (Continued)
DECEMBER 31, 2009 AND 2008
 NOTE 7  DERIVATIVE INSTRUMENTS (Continued)
 Fair Value of Derivative Instruments:
 Asset Derivatives
    
    
    Liability DerivativesDerivatives in
    
    
    
    
    
    Fair Value
    
    
    
    
    
    
    Fair ValueCash Flow
    
    Balance Sheet
    
    
    December 31,
    
    
    December 31,
    
    
    Balance Sheet
    
    
    December 31,
    
    
    December 31,Hedging Relationships
    
    Location
    
    
    2009
    
    
    2008
    
    
    Location
    
    
    2009
    
    
    2008Commodity contracts:
    
    Current assets
    
    $
    508,000
    
    
    $
    1,724,600
    
    
    Current liabilities
    
    $
    (6,100
    )
    
    $
    (152,600
    )Long-term assets
    
    
    
    417,700
    
    
    
    1,085,500
    
    
    Long-term liabilities
    
    
    
    (64,400
    )
    
    
    (137,300
    )Total derivatives
    
    
    
    
    
    $
    925,700
    
    
    $
    2,810,100
    
    
    
    
    
    
    $
    (70,500
    )
    
    $
    (289,900
    )
 Effects of Derivative Instruments on Statements of Operations:
 (Loss) Gain
    
    
    
    
    
    
    LossRecognized in OCI on Derivative
    
    
    
    
    
    
    Reclassified from OCI into Income(Effective Portion)
    
    
    Location of Gain/(Loss)
    
    
    (Effective Portion)Derivatives in
    
    Twelve Months Ended
    
    
    Reclassified from Accumulated
    
    
    Twelve Months EndedCash Flow
    
    December 31,
    
    
    December 31,
    
    
    OCI into Income
    
    
    December 31,
    
    
    December 31,Hedging Relationship
    
    2009
    
    
    2008
    
    
    (Effective Portion)
    
    
    2009
    
    
    2008Commodity contracts
    
    $
    (101,200
    )
    
    $
    112,200
    
    
    Natural gas and oil revenue
    
    $
    (62,700
    )
    
    $
    (306,600
    )
    31




---



##### Table of Contents



ATLAS AMERICA PUBLIC #15-2005 (A) L.P.
NOTES TO FINANCIAL STATEMENTS  (Continued)
DECEMBER 31, 2009 AND 2008
 NOTE 7  DERIVATIVE INSTRUMENTS (Continued)
  Natural Gas Fixed Price Swaps
 Production
    
    
    
    
    
    AveragePeriod Ending
    
    Volumes
    
    
    Fixed Price
    
    
    Fair ValueDecember 31,
    
    (MMbtu)(1)
    
    
    (per MMbtu)(1)
    
    
    Asset(2)2010
    
    
    290,709
    
    
    $
    7.34
    
    
    $
    446,0002011
    
    
    151,900
    
    
    
    6.98
    
    
    
    134,2002012
    
    
    120,800
    
    
    
    7.22
    
    
    
    100,8002013
    
    
    65,400
    
    
    
    7.08
    
    
    
    27,300$
    708,300
 Natural Gas Costless Collars
 Production
    
    
    
    
    
    
    
    AveragePeriod Ending
    
    Option
    
    Volumes
    
    
    Floor & Cap
    
    
    Fair ValueDecember 31,
    
    Type
    
    (MMbtu)(1)
    
    
    (per MMbtu)(1)
    
    
    Asset(2)2010
    
    Puts purchased
    
    
    20,100
    
    
    $
    7.84
    
    
    $
    49,6002010
    
    Calls sold
    
    
    20,100
    
    
    
    9.01
    
    
    
    2011
    
    Puts purchased
    
    
    88,600
    
    
    
    6.45
    
    
    
    57,0002011
    
    Calls sold
    
    
    88,600
    
    
    
    7.63
    
    
    
    2012
    
    Puts purchased
    
    
    45,800
    
    
    
    6.51
    
    
    
    20,6002012
    
    Calls sold
    
    
    45,800
    
    
    
    7.71
    
    
    
    2013
    
    Puts purchased
    
    
    42,500
    
    
    
    6.58
    
    
    
    12,1002013
    
    Calls sold
    
    
    42,500
    
    
    
    7.79
    
    
    
    $
    139,300
 Crude Oil Fixed Price Swaps
 Production
    
    
    
    
    
    AveragePeriod Ending
    
    Volumes
    
    
    Fixed Price
    
    
    Fair ValueDecember 31,
    
    (Bbl)(1)
    
    
    (per Bbl)(1)
    
    
    Asset(3)2010
    
    
    300
    
    
    $
    97.40
    
    
    $
    4,7002011
    
    
    200
    
    
    
    77.46
    
    
    
    8002012
    
    
    200
    
    
    
    76.86
    
    
    
    2002013
    
    
    100
    
    
    
    77.36
    
    
    
    100$
    5,800
  32




---



##### Table of Contents



ATLAS AMERICA PUBLIC #15-2005 (A) L.P.
NOTES TO FINANCIAL STATEMENTS  (Continued)
DECEMBER 31, 2009 AND 2008
 NOTE 7  DERIVATIVE INSTRUMENTS (Continued)
 Crude Oil Costless Collars
 Production
    
    
    
    
    
    
    
    AveragePeriod Ending
    
    Option
    
    Volumes
    
    
    Floor & Cap
    
    
    Fair ValueDecember 31,
    
    Type
    
    (Bbl)(1)
    
    
    (per Bbl)(1)
    
    
    Asset (Liability)(3)2010
    
    Puts purchased
    
    
    200
    
    
    $
    85.00
    
    
    $
    1,5002010
    
    Calls sold
    
    
    200
    
    
    
    112.92
    
    
    
    2011
    
    Puts purchased
    
    
    200
    
    
    
    67.22
    
    
    
    3002011
    
    Calls sold
    
    
    200
    
    
    
    89.44
    
    
    
    2012
    
    Puts purchased
    
    
    100
    
    
    
    65.51
    
    
    
    502012
    
    Calls sold
    
    
    100
    
    
    
    91.45
    
    
    
    2013
    
    Puts purchased
    
    
    50
    
    
    
    65.36
    
    
    
    2013
    
    Calls sold
    
    
    50
    
    
    
    93.44
    
    
    
    (50
    )$
    1,800Total Net Asset
    
    $
    855,200
 
 (1)
    
    MMBTU represents million British Thermal Units. Bbl represents barrels.(2)
    
    Fair value based on forward NYMEX natural gas prices.(3)
    
    Fair value based on forward WTI crude oil prices. NOTE 8  FAIR VALUE OF FINANCIAL INSTRUMENTS
  Level 1
    
    Unadjusted quoted prices in active markets for identical assets and
liabilities that the reporting entity has the ability to access at the measurement date.
 Level 2
    
    Inputs other than quoted prices included within Level 1 that are observable
for the asset and liability or can be corroborated with observable market data for
substantially the entire contractual term of the asset or liability.
 Level 3
    
    Unobservable inputs that reflect the entities own assumptions about the
assumptions that market participants would use in the pricing of the asset or liability
and are consequently not based on market activity, but rather through particular
valuation techniques.
  33




---



##### Table of Contents



ATLAS AMERICA PUBLIC #15-2005 (A) L.P.
NOTES TO FINANCIAL STATEMENTS  (Continued)
DECEMBER 31, 2009 AND 2008
 NOTE 8  FAIR VALUE OF FINANCIAL INSTRUMENTS (Continued)
 Assets and Liabilities Measured at Fair Value on a Recurring Basis
  December 31, 2009
    
    
    December 31, 2008Level 2
    
    
    Total
    
    
    Level 2
    
    
    TotalCommodity-based derivatives
    
    $
    855,200
    
    
    $
    855,200
    
    
    $
    2,520,200
    
    
    $
    2,520,200Total
    
    $
    855,200
    
    
    $
    855,200
    
    
    $
    2,520,200
    
    
    $
    2,520,200
 Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis
   NOTE 9  ASSET RETIREMENT OBLIGATION
    34




---



##### Table of Contents



ATLAS AMERICA PUBLIC #15-2005 (A) L.P.
NOTES TO FINANCIAL STATEMENTS  (Continued)
DECEMBER 31, 2009 AND 2008
 NOTE 10  NATURAL GAS AND OIL PRODUCING ACTIVITIES
(UNAUDITED)
 (1)
    
    Capitalized Costs Related to Oil and Gas Producing Activities
  At December 31,2009
    
    
    2008Leasehold interest:
    
    $
    1,526,600
    
    
    $
    1,526,600Wells and related equipment
    
    
    64,512,600
    
    
    
    64,310,600Accumulated depletion
    
    
    (48,930,600
    )
    
    
    (47,345,200
    )Net capitalized cost
    
    $
    17,108,600
    
    
    $
    18,492,000
 (2)
    
    Oil and Gas Reserve Information
     35




---



##### Table of Contents



ATLAS AMERICA PUBLIC #15-2005 (A) L.P.
NOTES TO FINANCIAL STATEMENTS  (Continued)
DECEMBER 31, 2009 AND 2008
 NOTE 10  NATURAL GAS AND OIL PRODUCING
 ACTIVITIES (UNAUDITED) (Continued)
  Natural Gas
    
    
    Oil(Mcf)
    
    
    (Bbls)Proved developed reserves:Balance at December 31, 2007
    
    
    10,106,600
    
    
    
    19,700Production
    
    
    (923,600
    )
    
    
    (3,000
    )Revisions to previous estimates
    
    
    (2,581,100
    )
    
    
    (4,400
    )Balance at December 31, 2008
    
    
    6,601,900
    
    
    
    12,300Production
    
    
    (529,400
    )
    
    
    (2,000
    )Revisions to previous estimates
    
    
    (3,169,800
    )
    
    
    (700
    )Balance at December 31, 2009
    
    
    2,902,700
    
    
    
    9,600
 
 ITEM 9.
    
    CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE
  
 ITEM 9A.
    
    CONTROLS AND PROCEDURES
 Conclusion Regarding the Effectiveness of Disclosure Controls and Procedures
    36




---



##### Table of Contents



Managements Report on Internal Control over Financial Reporting
 Internal Control  Integrated
Framework
    
 ITEM 9B.  OTHER INFORMATION
  
 PART III
 
 ITEM 10.
    
    DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT
 nd
 Executive Officers and Directors.
 NAME
    
    AGE
    
    POSITION OR OFFICEFreddie M. Kotek
    
    
    54
    
    
    Chairman of the Board of Directors, Chief Executive Officer and PresidentFrank P. Carolas
    
    
    50
    
    
    Executive Vice President  Land and Geology and a DirectorJeffrey C. Simmons
    
    
    51
    
    
    Executive Vice President  Operations and a DirectorJack L. Hollander
    
    
    53
    
    
    Senior Vice President  Direct Participation ProgramsSean P. McGrath
    
    
    38
    
    
    Chief Accounting OfficerMatthew A. Jones
    
    
    48
    
    
    Chief Financial Officer
  37




---



##### Table of Contents




    
    the approximate amount of an individuals professional time devoted to the business and
affairs of our MGP and Atlas America have been aggregated because there is no reasonable
method for them to distinguish their activities between the two companies; and
 
    
    for those individuals who also hold senior positions with other affiliates of our MGP,
if it is stated that they devote approximately 100% of their professional time to our MGP
and Atlas America, it is because either the other affiliates are not currently active in
drilling new wells, such as Viking Resources or Resource Energy, and the individuals are
not required to devote a material amount of their professional time to the affiliates, or
there is no reasonable method to distinguish their activities between our MGP and Atlas as
compared with the other affiliates of our MGP, such as Viking Resources or Resource Energy.
 Freddie M. Kotek
 Frank P. Carolas.
 Jeffrey C. Simmons.
  38




---



##### Table of Contents



Jack L. Hollander.
 Sean P. McGrath
 Matthew A. Jones
 Audit Committee Financial Expert.
 Remuneration of Officers and Directors.
 Code of Business Conduct and Ethics. nd
  39




---



##### Table of Contents



ITEM 11.
    
    EXECUTIVE COMPENSATION
  
 ITEM 12.
    
    SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT
  Organizational and Security Ownership of Beneficial Owners.
 
 ITEM 13.
    
    CERTAIN RELATIONSHIPS AND RELATED PARTY TRANSACTIONS
 Oil and Gas Revenues.
 Administrative Costs.
 Direct Costs.
 Well Charges.
 Transportation Fees.
 Other Compensation.
  40




---



##### Table of Contents



ITEM 14.  PRINCIPAL ACCOUNTANT FEES AND SERVICES
 Audit Fees.
 Procedures for Audit Committee Pre-Approval of Audit and Permissible Non-Audit Services of
Independent Auditor.
 
 PART IV
 
 ITEM 15.  EXHIBITS
 
 EXHIBIT INDEX
 Description
    
    Location4(a)
    
    
    Certificate of Limited Partnership for Atlas
America Public #15-2005 (A) L.P.
    
    Previously filed in
our Form S-1 on
August 9, 20054(b)
    
    
    Amended and Restated Certificate and
Agreement of Limited Partnership for Atlas
America Public #15-2005 (A) L.P.
(1)
    
    Previously filed in
our Form S-1 on
August 9, 20054(c)
    
    
    Drilling and Operating Agreement for Atlas
America Public #15-2005 (A) L.P.
(1)
    
    Previously filed in
our Form S-1 on
August 9, 200523.1
    
    
    Consent of Wright and Company, Inc.31.1
    
    
    Rule 13a-14(a)/15(d)-14 (a) Certification.31.2
    
    
    Rule 13a-14(a)/15(d)-14 (a) Certification.32.1
    
    
    Section 1350 Certification.32.2
    
    
    Section 1350 Certification.99.1
    
    
    Summary Reserve Report.
 
 (1)
    
    Filed on August 9, 2005 in the Form S-1 Registration Statement dated August 9, 2005, File No. 333-127355  41




---



##### Table of Contents



SIGNATURES
   Date:  March 30, 2010
    Atlas Resources, LLC, Managing General PartnerBy:
    /s/ Freddie M. KotekFreddie M. Kotek, Chairman of the Board of Directors,Chief Executive
Officer and President  Date: March 30, 2010
    
    By:
    
    /s/ Freddie M. KotekFreddie M. Kotek, Chairman of the Board of Directors, 
Chief Executive
Officer and PresidentDate: March 30, 2010
    
    By:
    
    /s/ Frank P. CarolasFrank P. Carolas, Executive Vice President  Land and GeologyDate: March 30, 2010
    
    By:
    
    /s/ Jeffrey C. SimmonsJeffrey C. Simmons, Executive Vice President  OperationsDate: March 30, 2010
    
    By:
    
    /s/ Sean P. McGrathSean P. McGrath, Chief Accounting OfficerDate: March 30, 2010
    
    By:
    
    /s/ Matthew A. JonesMatthew A. Jones, Chief Financial Officer
 Supplemental information to be furnished with reports filed pursuant to Section 15(d) of the
Exchange Act by Non-reporting Issuers
   42