EXHIBIT 5
                                                                       ---------






                                   OPINION OF
                            KUNZMAN & BOLLINGER, INC.
                              AS TO THE LEGALITY OF
                                    THE UNITS





















                            KUNZMAN & BOLLINGER, INC.
                                ATTORNEYS-AT-LAW
                          5100 N. BROOKLINE, SUITE 600
                          OKLAHOMA CITY, OKLAHOMA 73112

                            Telephone (405) 942-3501
                               Fax (405) 942-3527


                                                                       Exhibit 5


                                February 22, 2006


Atlas Resources, Inc.
311 Rouser Road
Moon Township, Pennsylvania  15108

        RE:    ATLAS AMERICA PUBLIC #15-2005 PROGRAM
               -------------------------------------

Gentlemen:

        You have requested our opinion on certain issues pertaining to Atlas
America Public #15-2005 Program (the "Program"), which is a series of up to
three limited partnerships formed under the Limited Partnership Laws of
Delaware. Atlas Resources, Inc., a Pennsylvania corporation, will be the
Managing General Partner of each Partnership.

Basis of Opinion
- ----------------

        Our opinion is based on our review of a certain Registration Statement
on Form S-1 and all amendments thereto, including Post-Effective Amendment No. 1
to the Registration Statement and any additional pre-effective or post-effective
amendments, for the Program (the "Registration Statement") as filed with the
Securities and Exchange Commission (the "Commission"), including the Prospectus
and the Form of Amended and Restated Certificate and Agreement of Limited
Partnership for Atlas America Public #15-2006(B) L.P. [Form of Amended and
Restated Certificate and Agreement of Limited Partnership for Atlas America
Public #15-2006(C) L.P.] (the "Partnership Agreement"), the Form of Subscription
Agreement and the Form of Drilling and Operating Agreement for Atlas America
Public #15-2006(B) L.P. [Atlas America Public #15-2006(C) L.P.] contained
therein, and on our review of such other documents and records as we have deemed
necessary to review for purposes of rendering our opinion. As to various
questions of fact material to our opinion which we have not independently
verified, we have relied on certain representations made to us by officers and
directors of the Managing General Partner.

        In rendering the opinion herein provided, we have assumed each
subscriber has paid the consideration specified in the subscriber's Subscription
Agreement and the due execution and delivery of all relevant documents by all
parties thereto.

        As used in our opinion, the term "Units" includes the Limited Partner
Units, the Investor General Partner Units and the limited partner units into
which the Investor General Partner Units will be converted as described in the
Registration Statement.








KUNZMAN & BOLLINGER, INC.

Atlas Resources, Inc.
February 22, 2006
Page 2



Opinion
- -------

        Based on the foregoing, we are of the opinion that:

               The Units, when issued and sold in accordance with the
               Registration Statement, as amended at the time it becomes
               effective with the Commission, and the respective Partnership
               Agreement for the Partnership to which the respective Units
               relate, and on the filing with the Delaware Secretary of State of
               such Partnership Agreement, a certificate thereof or an
               appropriate amendment or amendments to such Partnership
               Agreement, reflecting the admission of the subscribers thereto
               for Investor General Partner Units as additional general partners
               or, thereafter, the conversion of the Investor General Partners
               to Limited Partners, in accordance with Delaware law, and when
               issued against payment therefor as contemplated by the Prospectus
               and each respective Partnership Agreement, will be validly issued
               and fully paid and nonassessable, except that the Managing
               General Partner may call for additional Capital Contributions
               from the Investor General Partners, including Investor General
               Partners who have been converted to Limited Partners, in a
               Partnership if necessary to pay that Partnership's obligations or
               liabilities:

                              o     which arose before the conversion of the
                                    Investor General Partners to Limited
                                    Partners and for which the Investor General
                                    Partners are liable because of their status
                                    as general partners of the Partnership at
                                    the time the obligations and liabilities
                                    arose; and

                              o     which exceed the Partnership's assets,
                                    insurance proceeds from any source, and the
                                    Managing General Partner's indemnification
                                    of the Investor General Partners from any
                                    liability incurred in connection with the
                                    Partnership which is in excess of the
                                    Investor General Partners' interest in the
                                    Partnership's undistributed net assets and
                                    insurance proceeds.

        We hereby consent to the use of this opinion as an Exhibit to the
Post-Effective Amendment No. 1 to the Registration Statement and to the
reference to this firm in the Prospectus included in the Post-Effective
Amendment No. 1 to the Registration Statement.

                                                   Yours very truly,

                                                   /s/ Kunzman & Bollinger, Inc.

                                                   KUNZMAN & BOLLINGER, INC.