Exhibit 99.1350CERT


     Certification Pursuant to Rule 30a-2(b) under the 1940 Act and
                  Section 906 of the Sarbanes Oxley Act


Pursuant to 18 U.S.C.  1350, the undersigned officer of CMA Treasury Fund and
Master Treasury LLC (together, the "Registrants"), hereby certifies, to the
best of his knowledge, that the Registrants' Report on Form N-CSR for the
period ended September 30, 2007, (the "Report") fully complies with the
requirements of Section 15(d) of the Securities Exchange Act of 1934, as
amended, and that the information contained in the Report fairly presents, in
all material respects, the financial condition and results of operations of
each Registrant.


Date: November 20, 2007


/s/ Donald C. Burke
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Donald C. Burke, Chief Executive Officer (principal executive officer) of
CMA Treasury Fund and Master Treasury LLC


Pursuant to 18 U.S.C.  1350, the undersigned officer of CMA Treasury Fund and
Master Treasury LLC (together, the "Registrants"), hereby certifies, to the
best of his knowledge, that the Registrants' Report on Form N-CSR for the
period ended September 30, 2007, (the "Report") fully complies with the
requirements of Section 15(d) of the Securities Exchange Act of 1934, as
amended, and that the information contained in the Report fairly presents, in
all material respects, the financial condition and results of operations of
each Registrant.


Date: November 20, 2007


/s/ Neal J. Andrews
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Neal J. Andrews, Chief Financial Officer (principal financial officer) of
CMA Treasury Fund and Master Treasury LLC



This certification is being furnished pursuant to Rule 30a-2(b) under the
Investment Company Act of 1940, as amended, and 18 U.S.C. Section 1350 and is
not being filed as part of the Form N-CSR with the Securities and Exchange
Commission.