EX-31 Rule 13a-14(d)/15d-14(d) Certification.


  I, E. Todd Whittemore, certify that:

  1.I have reviewed this report on Form 10-K and all reports on Form 10-D
    required to be filed in respect of the period covered by this report on
    Form 10-K of Structured Asset Securities Corporation Mortgage Loan
    Trust 2007-BC1 (the "Exchange Act periodic reports");

  2.Based on my knowledge, the Exchange Act periodic reports, taken as a
    whole, do not contain any untrue statement of a material fact or omit
    to state a material fact necessary to make the statements made, in
    light of the circumstances under which such statements were made, not
    misleading with respect to the period covered by this report;

  3.Based on my knowledge, all of the distribution, servicing and other
    information required to be provided under Form 10-D for the period
    covered by this report is included in the Exchange Act periodic reports;

  4.I am responsible for reviewing the activities performed by the
    servicers and based on my knowledge and the compliance reviews
    conducted in preparing the servicer compliance statements required in
    this report under Item 1123 of Regulation AB, and except as disclosed
    in the Exchange Act periodic reports, the servicers have fulfilled
    their obligations under the servicing agreements in all material
    respects; and

  5.All of the reports on assessment of compliance with servicing criteria
    for asset-backed securities and their related attestation reports on
    assessment of compliance with servicing criteria for asset-backed
    securities required to be included in this report in accordance with
    Item 1122 of Regulation AB and Exchange Act Rules 13a-18 and 15d-18
    have been included as an exhibit to this report, except as otherwise
    disclosed in this report.  Any material instances of noncompliance
    described in such reports have been disclosed in this report on Form
    10-K.

    In giving the certifications above, I have reasonably relied on
    information provided to me by the following unaffiliated parties: Chase
    Home Finance LLC, as Subservicer for JPMorgan Chase Bank, N.A., Clayton
    Fixed Income Services, Inc., as Credit Risk Manager, Deutsche Bank
    National Trust Company, as Custodian, FIS Tax Services f/k/a LSI Tax
    Services, as Sub-Contractor for Option One Mortgage Corporation,
    JPMorgan Chase Bank, N.A., as Servicer, LaSalle Bank, National
    Association, as Custodian, Newport Management Corporation, as
    Sub-Contractor for Aurora Loan Services LLC, Option One Mortgage
    Corporation, as Servicer, Wells Fargo Bank, N.A., as Trustee and Paying
    Agent, Wells Fargo Bank, N.A., as Custodian, Westlake Settlement
    Services, LLC, as Sub-Contractor for Aurora Loan Services LLC, ZC  Real
    Estate Tax Solutions Limited, as Sub-Contractor for Option One Mortgage
    Corporation and ZC Sterling Insurance Agency, Inc., as Sub-Contractor
    for Option One Mortgage Corporation.

    Dated:   March 27, 2008


    /s/ E. Todd Whittemore
    E. Todd Whittemore

    Executive Vice President
    (Senior Officer in charge of the servicing function of Aurora Loan
    Services LLC, in its capacity as master servicer)

   Aurora Loan Services LLC, as Master Servicer