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|  1. | EMC      Mortgage Corporation ("EMC"), as Master Servicer is responsible for      assessing compliance with the servicing criteria applicable to it under      paragraph (d) of Item 1122 of Regulation AB, as of and for the 12-month      period ended December 31, 2007 (the "Reporting Period"), as set forth in      Appendix A hereto. The transactions covered by this report included the      asset-backed securities transactions for which EMC Mortgage Corporation      acted as Master Servicer involving residential mortgage loans that were      completed on or after January 1, 2006, and that were registered with the      Securities and Exchange Commission pursuant to the Securities Act of 1933      in the following securitizations: BSABS 2007-AC1, BSABS 2007-AC2, BSABS      2007-AC3, BSABS 2007-AC4, BSABS 2007-AC5, BSABS 2007-AC6, BSABS 2007-HE6,      BSABS 2007-HE7, BSABS 2007-SD1, BSARM 2007-1, BSARM 2007-3, BSARM 2007-4,      BSARM 2007-5, IMPAC 2006-SD1, PRIME 2007-1, PRIME 2007-2, and PRIME 2007-3      (the "Platform");                                                                                                                                                                                          |
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|  2. | Except      as set forth in paragraph 3 below, EMC Mortgage Corporation as Master      Servicer used the criteria set forth in paragraph (d) of Item 1122 of      Regulation AB to assess the compliance with the applicable servicing      criteria;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
|     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
|  3. | The      criteria listed in the column titled "Inapplicable Servicing Criteria" on      Appendix A hereto are inapplicable to EMC Mortgage Corporation based on      the activities it performs directly, with respect to the Platform      as: The      following activity is not a requirement of the transaction      agreements: ●    1122(d)(1)(iii) The      following activities are not a requirement of the Master Servicer pursuant      to the transaction agreements as described in Appendix A: ●    1122(d)(1)(ii)●    1122(d)(2)(vi)●    1122(d)(3)(i)(c)●    1122(d)(4)(i)●    1122(d)(4)(ii)●    1122(d)(4)(iii)●    1122(d)(4)(iv)●    1122(d)(4)(v)●    1122(d)(4)(viii)●    1122(d)(4)(ix)●    1122(d)(4)(x)●    1122(d)(4)(xi)●    1122(d)(4)(xii)●    1122(d)(4)(xiii)●    1122(d)(4)(xv) |
|     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
|  4. | EMC      Mortgage Corporation, as Master Servicer, has complied in all material      respects with the applicable servicing criteria as of December 31,      2007,   and for the Reporting Period with respect to the      Platform taken as a whole;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
|     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
|  5. | Deloitte      & Touche LLP, a registered public accounting firm, has issued an      attestation report on EMC's assessment of compliance with the applicable      servicing criteria for the ReportingPeriod.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |

|  March 14, 2008 |  /s/      Mark T. Novachek    |
|----------------------|------------------------------------|
|                 |  Mark T.      Novachek        |
|                 |  Senior Vice      President   |
|                 |                               |
|                 |  /s/      Michelle Viner      |
|                 |  Michelle      Viner          |
|                 |  Manager- Vice      President |

|   |   |  800 State Highway      121 Bypass, Lewisville, TX 75067-4180Mailing Address: P.O. Box 293150, Lewisville, TX      75029-3150 |   |
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| SERVICING      CRITERIA                 | APPLICABLE      SERVICING      CRITERIA                                                                                                                                                                                                                                               | INAPPLICABLE      SERVICING      CRITERIA                                   |
|-----------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------|
|  Reference                         |  Criteria                                                                                                                                                                                                                                                                        |  Performed      Directly      By      EMC      as Master      Servicer |  Performed      by Vendor(s)      for which      EMC is the Responsible Party |  Performed      by Sub-Servicer(s)      or      Vendor(s) for which      EMC is NOT      the Responsible      Party |  NOT      performed by      EMC as Master      Servicer or      by subservicer(s)      or vendor(s)      retained      by EMC as      Master Servicer |
| General      Servicing Consideration    |
| 1122(d)(1)(i)                           | Polices      and procedures are instituted to monitor any performance or other triggers      and events of default in accordance with the transaction      agreements.                                                                                                                |          X                                                   |   |   |   |
| 1122(d)(1)(ii)                          | If      any material servicing activities are outsourced to third parties,      policies and procedures are instituted to monitor the third party's      performance and compliance with such servicing      activities.                                                              |                                                                        |   |   |          X(EMC      Master Servicing does not outsource |
| 1122(d)(1)(iii)                         | Any      requirements in the transaction agreements to maintain a back-up servicer      for the mortgage loans are maintained.                                                                                                                                                        |                                                                        |   |   |          X(Not      a requirement of the transaction documents) |
| 1122(d)(1)(iv)                          | A      fidelity bond and errors and omissions policy is in effect on the party      participating in the servicing function throughout the reporting period in      the amount of coverage required by and otherwise in accordance with the      terms of the transaction agreements. |          X                                                   |   |   |   |
| Cash      Collection and Administration |
| 1122(d)(2)(i)                           | Payments      on [pool assets] are deposited into the appropriate custodial bank      accounts and related bank clearing accounts no more than two business days      following receipt, or such other number of days specified in the      transaction agreements.                   |          X                                                   |   |   |   |

|   |   |  800 State Highway      121 Bypass, Lewisville, TX 75067-4180Mailing Address: P.O. Box 293150, Lewisville, TX      75029-3150 |   |
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| SERVICING      CRITERIA | APPLICABLE      SERVICING      CRITERIA                                                                                                                                                                                                                                                                                                                                                            | INAPPLICABLE      SERVICING      CRITERIA                                   |
|-------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------|
|  Reference         |  Criteria                                                                                                                                                                                                                                                                                                                                                                                     |  Performed      Directly      By      EMC      as Master      Servicer |  Performed      by Vendor(s)      for which      EMC is the Responsible Party |  Performed      by Sub-Servicer(s)      or      Vendor(s) for which      EMC is NOT      the Responsible      Party |  NOT      performed by      EMC as Master      Servicer or      by subservicer(s)      or vendor(s)      retained      by EMC as      Master Servicer |
| 1122(d)(2)(ii)          | Disbursements      made via wire transfer on behalf of an obligor or to an investor are made      only by authorized personnel.                                                                                                                                                                                                                                                                    |          X                                                   |   |   |   |
| 1122(d)(2)(iii)         | Advances      of funds or guarantees regarding collections, cash flows or distributions,      and any interest or other fees charged for such advances, are made,      reviewed and approved as specified in the transaction      agreements.                                                                                                                                                      |          X                                                   |   |   |   |
| 1122(d)(2)iv)           | The      related accounts for the transaction, such as cash reserve accounts or      accounts established as a form of overcollateralization are separately      maintained (e.g. with respect to commingling of cash) as set forth in the      transaction agreements.                                                                                                                            |          X                                                   |   |   |   |
| 1122(d)(2)(v)           | Each      custodial account is maintained at a federally insured depository      institution as set forth in the transaction agreements. For purposes of      this criterion, "federally insured depository institutions" with respect      to a foreign financial institution means a foreign financial that meets      the requirements of Rule 13k-1(b)(1) of the Securities Exchange      Act. |          X                                                   |   |   |   |
| 1122(d)(2)(vi)          | Un-issued      checks are safeguarded so as to prevent unauthorized      access.                                                                                                                                                                                                                                                                                                                   |                                                                        |   |   |          X(EMC      Master Servicing does not issuechecks) |

|   |   |  800 State Highway      121 Bypass, Lewisville, TX 75067-4180Mailing Address: P.O. Box 293150, Lewisville, TX      75029-3150 |   |
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| SERVICING      CRITERIA                 | APPLICABLE      SERVICING      CRITERIA                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       | INAPPLICABLE      SERVICING      CRITERIA                                                        |
|-----------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------|
|  Reference                         |  Criteria                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |  Performed      Directly      By      EMC      as Master      Servicer                      |  Performed      by Vendor(s)      for which      EMC is the Responsible Party |  Performed      by Sub-Servicer(s)      or      Vendor(s) for which      EMC is NOT      the Responsible      Party |  NOT      performed by      EMC as Master      Servicer or      by subservicer(s)      or vendor(s)      retained      by EMC as      Master Servicer |
| 1122(d)(2)vii)                          | Reconciliations      are prepared on a monthly basis for all asset-backed securities related      bank accounts, including custodial accounts and related bank clearing      accounts. These reconciliations are (A) mathematically accurate; (B)      prepared within 30 calendar days after the bank statement cutoff date, or      such other number of days specified in the transaction agreements; (C)      reviewed and approved by someone other than the person who prepared the      reconciliation; items are resolved within 90 calendar days of their      original identification, or such other number of days specified in the      transaction agreements.                                   |          X                                                                        |   |   |   |
| Investor      Remittances and Reporting |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |                                                                                             |   |
| 1122(d)(3)(i)                           | Reports      to investors, including those to be filed with the Commission, are      maintained in accordance with the transaction agreements and applicable      Commission requirements. Specifically, such reports (A) are prepared in      accordance with timeframes and other terms set forth in the transaction      agreements; (B) provide in formation calculated in accordance with the      terms specified in the transaction agreements: (C) are filed with the      Commission as required by its rules and regulations; and (D) agree with      investors' or the trustee's records as to the total unpaid principal      balance and number of mortgage loans serviced by the      Servicer. | X      (Re: Item C; EMC Master Servicing is not responsible for filing with the      Commission) |   |   |   |

|   |   |  800 State Highway      121 Bypass, Lewisville, TX 75067-4180Mailing Address: P.O. Box 293150, Lewisville, TX      75029-3150 |   |
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| SERVICING      CRITERIA        | APPLICABLE      SERVICING      CRITERIA                                                                                                                                                                       | INAPPLICABLE      SERVICING      CRITERIA                                   |
|--------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------|
|  Reference                |  Criteria                                                                                                                                                                                                |  Performed      Directly      By      EMC      as Master      Servicer |  Performed      by Vendor(s)      for which      EMC is the Responsible Party |  Performed      by Sub-Servicer(s)      or      Vendor(s) for which      EMC is NOT      the Responsible      Party |  NOT      performed by      EMC as Master      Servicer or      bysubservicer(s)      or vendor(s)      retained      by EMC as      Master Servicer |
| 1122(d)(3)(ii)                 | Amounts      due to investors are allocated and remitted in accordance with timeframes,      distribution priority and other terms set forth in the transaction      agreements.                              |          X                                                   |   |   |   |
| 1122(d)(3)(iii)                | Disbursements      made to an investor are posted within two business days to the Servicer's      investor records, or such other number of days specified in the      transaction agreements.                |          X                                                   |   |   |   |
| 1122(d)(3)(iv)                 | Amounts      remitted to investors per the investor reports agree with cancelled      checks, or other form of payment, or custodial bank      statements.                                                    |          X                                                   |   |   |   |
| Pool      Asset Administration |
| 1122(d)(4)(i)                  | Collateral      or security on mortgage loans is maintained as required by the transaction      agreements or related mortgage loan documents.                                                                |                                                                        |   |   |          X(This      is a requirement of the Primary Servicers and      Custodians) |
| 1122(d)(4)(ii)                 | Mortgage      loan and related documents are safeguarded as required by the transaction      agreements.                                                                                                      |                                                                        |   |   |          X(This      is a requirement of the Primary Servicers and      Custodians) |
| 1122(d)(4)(iii)                |          Any additions, removals or substitutions to the asset pool are made,      reviewed and approved in accordance with any conditions or requirements in      the transaction agreements. |                                                                        |   |   |          X(This      is a requirement of the Primary Servicers and    Trustee) |

|   |   |  800 State Highway      121 Bypass, Lewisville, TX 75067-4180Mailing Address: P.O. Box 293150, Lewisville, TX      75029-3150 |   |
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| SERVICING      CRITERIA | APPLICABLE      SERVICING      CRITERIA                                                                                                                                                                                                                                                                                                                                                                                                             | INAPPLICABLE      SERVICING      CRITERIA                                   |
|-------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------|
|  Reference         |  Criteria                                                                                                                                                                                                                                                                                                                                                                                                                                      |  Performed      Directly      By      EMC      as Master      Servicer |  Performed      by Vendor(s)      for which      EMC is the Responsible Party |  Performed      by Sub-Servicer(s)      or      Vendor(s) for which      EMC is NOT      the Responsible      Party |  NOT      performed by      EMC as Master      Servicer or      by subservicer(s)      or vendor(s)      retained      by EMC as      Master Servicer |
| 1122(d)(4)(iv)          | Payments      on mortgage loans, including any payoffs, made in accordance with the      related mortgage loan documents are posted to the Servicer's obligor      records maintained no more than two business days after receipt, or such      other number of days specified in the transaction agreements, and      allocated to principal, interest or other items (e.g., escrow) in      accordance with the related mortgage loan documents. |                                                                        |   |   | X(This      is a requirement of   the Primary    Servicers) |
| 1122(d)(4)(v)           | The      Servicer's records regarding the mortgage loans agree with the Servicer's      records with respect to an obligor's unpaid principal      balance.                                                                                                                                                                                                                                                                                         |                                                                        |   |   |          X(This      is a requirement of the Primary Servicers) |
| 1122(d)(4)(vi)          | Changes      with respect to the terms or status of an obligor's mortgage loans (e.g.,      loan modifications or re-agings) are made reviewed and approved by      authorized personnel in accordance with the transaction agreements and      related pool asset documents.                                                                                                                                                                       |          X                                                   |   |   |   |
| 1122(d)(4)(vii)         | Loss      mitigation or recovery actions (e.g., forbearance plans, modifications and      deed in lieu of foreclosure, foreclosures and repossessions, as      applicable) are initiated, conducted and concluded in accordance with the      timeframes or other requirements established by the transaction      agreements.                                                                                                                      |          X                                                   |   |   |   |

|   |   |  800 State Highway      121 Bypass, Lewisville, TX 75067-4180Mailing Address: P.O. Box 293150, Lewisville, TX      75029-3150 |   |
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| SERVICING      CRITERIA | APPLICABLE      SERVICING      CRITERIA                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 | INAPPLICABLE      SERVICING      CRITERIA                                   |
|-------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------|
|  Reference         |  Criteria                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |  Performed      Directly      By      EMC      as Master      Servicer |  Performed      by Vendor(s)      for which      EMC is the Responsible Party |  Performed      by Sub-Servicer(s)      or      Vendor(s) for which      EMC is NOT      the Responsible      Party |  NOT      performed by      EMC as Master      Servicer or      bysubservicer(s)      or vendor(s)      retained      by EMC as      Master Servicer |
| 1122(d)(4)(viii)        |  Records      documenting collection efforts are maintained during the period a mortgage      loan is delinquent in accordance with the transaction agreements. Such      records are maintained on a least a monthly basis, or such other period      specified in the transaction agreements, and describe the entity's      activities in monitoring delinquent mortgage loans including, for example,      phone calls, letters and payment rescheduling plans in cases where      delinquency is deemed temporary (e.g., illness or      unemployment).  |                                                                        |   |   |  X(This      is a requirement of the Primary Servicers) |
| 1122(d)(4)(ix)          |  Adjustments      to interest rates or rates of return for mortgage loans with variable      rates are computed based on the related mortgage loan      documents                                                                                                                                                                                                                                                                                                                                                                                             |                                                                        |   |   |  X(This      is a requirement of the PrimaryServicers) |

|   |   |  800 State Highway      121 Bypass, Lewisville, TX 75067-4180Mailing Address: P.O. Box 293150, Lewisville, TX      75029-3150 |   |
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| SERVICING      CRITERIA | APPLICABLE      SERVICING      CRITERIA                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         | INAPPLICABLE  SERVICING      CRITERIA                             |
|-------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------|
|  Reference         |  Criteria                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |  Performed      Directly      By      EMC      as Master      Servicer |  Performed      by Vendor(s)      for which      EMC is the Responsible Party |  Performed      by Sub-Servicer(s)      or      Vendor(s) for which      EMC is NOT      the Responsible      Party |  NOT      performed by      EMC as Master      Servicer or      bysubservicer(s)      or vendor(s)      retained      by EMC as      Master Servicer |
| 1122(d)(4)(x)           | Regarding      any funds held in trust for an obligor (such as escrow accounts): (A) such      funds are analyzed, in accordance with the obligor's mortgage loan      documents, on a least an annual basis, or such other period specified n      the transaction agreements; (B) interest on such funds is paid, or      credited, to obligors in accordance with applicable mortgage loan      documents and state laws; and (C) such funds are returned to the obligor      within 30 calendar days of full repayment of the related mortgage loans,      or such other number of days specified in the transaction      agreements.  |                                                                        |   |   |   X(This      is a requirement of the Primary Servicers) |
| 1122(d)(4)(xi)          | Payments      made on behalf of an obligor (such as tax or insurance payments) are made      on or before the related penalty or expiration dates, as indicated on the      appropriate bills or notices for such payments, provided that such support      has been received by the servicer at least 30 calendar days prior to these      dates, or such other number of days specified in the transaction      agreements.                                                                                                                                                                                                                   |                                                                        |   |   |  X(This      is a requirement of the PrimaryServicers) |

|   |   |  800 State Highway      121 Bypass, Lewisville, TX 75067-4180Mailing Address: P.O. Box 293150, Lewisville, TX      75029-3150 |   |
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| SERVICING      CRITERIA | APPLICABLE      SERVICING      CRITERIA                                                                                                                                                                                                                | INAPPLICABLE      SERVICING      CRITERIA                                   |
|-------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------|
|  Reference         |  Criteria                                                                                                                                                                                                                                         |  Performed      Directly      By      EMC      as Master      Servicer |  Performed      by Vendor(s)      for which      EMC is the Responsible Party |  Performed      by Sub-Servicer(s)      or      Vendor(s) for which      EMC is NOT      the Responsible      Party |  NOT      performed by      EMC as Master      Servicer or      bysubservicer(s)      or vendor(s)      retained      by EMC as      Master Servicer |
| 1122(d)(4)(xii)         | Any      late payment penalties in connection with any payment to be made on behalf      of an obligor are paid from the Servicers funds and not charged to the      obligor, unless the late payment was due to the obligor's error or      omission. |                                                                        |   |   | X(This      is a requirement of the Primary Servicers) |
| 1122(d)(4)(xiii)        | Disbursements      made on behalf of an obligor are posted within two business days to the      obligor's records maintained by the Servicer, or such other numbers of      days specified in the transaction agreements.                              |                                                                        |   |   | X(This      is a requirement of the Primary Servicers) |
| 1122(d)(4)(xiv)         | Delinquencies,      charge-offs and uncollectible accounts are recognized and recorded in      accordance with the transaction agreements.                                                                                                             | X                                                                           |   |   |   |
| 1122(d)(4)(xv)          | Any      External enhancement or other support, identified in Item 1114(a)(1)      through (3) or Item 1115 of Regulation AB, is maintained as set forth in      the transaction agreements.                                                      |                                                                        |   |   | X(This      is a requirement of the Primary Servicers and      Trustee) |

|   |   |  800 State Highway      121 Bypass, Lewisville, TX 75067-4180Mailing Address: P.O. Box 293150, Lewisville, TX      75029-3150 |   |
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