Exhibit 33.5.1

Wachovia Mortgage Corporation

NC1089

401 South Tryon
Street

22nd Floor

Charlotte, NC 28288

[Letterhead of Wachovia Mortgage Corporation]

Management Assessment

Management of Wachovia Mortgage Corporation (the Company) is responsible for assessing compliance
with the applicable servicing criteria set forth in Item 1122(d) of Regulation AB of the Securities and Exchange Commission relating to the servicing of asset-based securities transactions involving first lien mortgage loans issued on or after
January 1, 2006 (the Platform) as of and for the year ended December 31, 2007, except for servicing criteria 1122(d)(1)(iii), 1122(d)(3)(i)(C), 1122(d)(4)(ii), 1122(d)(4)(xi), 1122(d)(4)(xii), 1122(d)(4)(xiii), and 1122(d)(4)(xv), which
the Company has determined are not applicable to the activities it performs with respect to the Platform. Servicing criterion 1122(d)(4)(i) is applicable to the activities the Company performs with respect to the Platform only as it relates to
mortgage perfection servicing activity. With respect to applicable servicing criterion 1122(d)(4)(vi), there were no activities performed during the year ended December 31, 2007 with respect to the Platform, because there were no occurrences of
events that would require the Company to perform such activities. With respect to servicing criteria 1122(d)(2)(i) and 1122(d)(4)(iv), management has engaged a vendor to perform the activities required by these servicing criteria. The Companys
management has determined that the vendor is not considered a servicer as defined in Item 1101(j) of Regulation AB, and the Companys management has elected to take responsibility for assessing compliance with the servicing
criteria applicable to the vendor as permitted by Interpretation 17.06 of the SEC Division of Corporation Finance Manual of Publicly Available Telephone Interpretations (Interpretation 17.06). Management has policies and procedure in
place designed to provide reasonable assurance that the vendors activities comply in all material respects with the servicing criteria applicable to the vendor. The Companys management is solely responsible for determining that it meets
the SEC requirements to apply Interpretation 17.06 for the vendor and related criteria. Exhibit A identifies the individual asset-backed transactions defined by management as constituting the Platform.

The Companys management has assessed the effectiveness of the Companys compliance with the applicable servicing criteria as of and for the period ended
December 31, 2007. In making this assessment, management used the criteria set forth by the Securities and Exchange Commission in paragraph (d) of Item 1122 of Regulation AB. (Exhibit B)

Based on such assessment, management believes that, as of and for the period ended December 31, 2007, the Company has complied in all material respects with the
servicing criteria set forth in Item 1122 (d) of Regulation AB of the Securities and Exchange Commission relating to the servicing of the Platform.

KPMG LLP, a registered public accounting firm, has issued an attestation report with respect to managements assessment of compliance with the applicable servicing criteria as of and for the period ended December 31, 2007.
(Exhibit C)



|               |  |  |  |                      
|-------------- |  |  |  | ---------------------
|March 24, 2008 |  |  |  | /s/ Timothy Schuck   
|               |  |  |  | Timothy Schuck       
|               |  |  |  | Senior Vice-President
|               |  |  |  | 3-24-08              
|               |  |  |  | Date                 



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EXHIBIT A



|                 |  |                            
|---------------- |  | ---------------------------
|CSMC 2006-1      |  | MSM 2007-11AR              
|CWMBS 2006-J1    |  | DBALT 2007-1               
|MSM 2006-2       |  | MSM 2007-12                
|CSMC 2006-2      |  | DBALT 2007-2               
|MSM 2006-3AR     |  | DBALT 2007-3               
|MSM 2006-5AR     |  | CSMC 2007-6                
|BSALTA 2006-2    |  | MASTR 2007-1               
|CSMC 2006-3      |  | MSM 2007-14AR              
|MSM 2006-6AR     |  | MSM 2007-15AR              
|BSABS I 2006-AC3 |  | CSMC 2007-7                
|MSM 2006-7       |  | ARMT 2007-3                
|MSM 2006-8AR     |  | 2007-GMACB0704             
|GSR 2006-5F      |  | 2007-GMACB0714             
|PRIME 2006-1     |  | 2007-GMACB0736             
|GSR 2006-6F      |  | RALI Series 2006-QS6 Trust 
|MALT 2006-3      |  | RALI Series 2006-QS10 Trust
|MSM 2006-9AR     |  | RALI Series 2006-QS11 Trust
|NAAC 2006-AF2    |  | RALI Series 2006-QS13 Trust
|CSMC 2006-7      |  | RALI Series 2006-QS16 Trust
|GSAA 2006-14     |  | RALI Series 2006-QS18 Trust
|MSM 2006-13ARX   |  | RAMP Series 2006-RS5 Trust 
|CSAB 06-2        |  | RFMSI Series 2006-S3 Trust 
|GSAA 2006-16     |  | RFMSI Series 2006-S4 Trust 
|CSMC 2006-8      |  | RFMSI Series 2006-S6 Trust 
|NAAC 2006-AR3    |  | RFMSI Series 2006-S7 Trust 
|CSMC 2006-9      |  | RFMSI Series 2006-S10 Trust
|MSM 2006 17XS    |  | RFMSI Series 2006-S12 Trust
|NAAC 2006-AR4    |  | RALI SERIES 2007-QS4 TRUST 
|GSAA 2006-19     |  | RALI SERIES 2007-QS8 TRUST 
|HALO 2006-2      |  | RALI SERIES 2007-QS10 TRUST
|GSAA 2006-20     |  | RALI SERIES 2007-QS11 TRUST
|MALT 2007-1      |  | RFMSI SERIES 2007-S4 TRUST 
|GSAA 2007-1      |  | RFMSI SERIES 2007-S5 TRUST 
|MSM 2007-1XS     |  | RFC SERIES 2007-WH3 TRUST  
|MSM 2007-2AX     |  | RFMSI SERIES 2007-S8 TRUST 
|MSM 2007-3XS     |  | RALI SERIES 2007-QS3 TRUST 
|MSM 2007-5AX     |  | RFMSI SERIES 2007-S2 TRUST 
|MANA 2007-F1     |  | RFMSI SERIES 2007-S6 TRUST 
|ARMT 2007-1      |  |                            
|MSM 2007-6XS     |  |                            
|GSAA 2007-4      |  |                            
|PRIME 2007-1     |  |                            
|GSAA 2007-5      |  |                            
|MSM 2007-7AX     |  |                            
|CMLTI 2007-6     |  |                            
|GSAA 2007-6      |  |                            
|ARMT 2007-2      |  |                            
|MSM 2007-10XS    |  |                            



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EXHIBIT B



|                |  |                                                                                                                                                                                                                                                                                                                                                                                 |  |                             |  |                                 |  |  
|--------------- |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | --------------------------- |  | ------------------------------- |  | -
|                |  | SERVICING CRITERIA                                                                                                                                                                                                                                                                                                                                                              |  | APPLICABLESERVICINGCRITERIA |  | INAPPLICABLE SERVICING CRITERIA
|Reference       |  | Criteria                                                                                                                                                                                                                                                                                                                                                                        |  | Performed by Company        |  | Performed by Vendor             |  |  
|                |  |                                                                                                                                                                                                                                                                                                                                                                                 |  |                            
|                |  | General Servicing Conditions                                                                                                                                                                                                                                                                                                                                                    |  |                             |  |                                 |  |  
|1122(d)(1)(i)   |  | Policies 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                           |  |                                 |  |  
|                |  |                                                                                                                                                                                                                                                                                                                                                                                 |  |                            
|1122(d)(1)(iii) |  | Any requirements in the transaction agreements to maintain a back-up servicer for the mortgage loans are maintained.                                                                                                                                                                                                                                                            |  |                             |  |                                 |  | X
|                |  |                                                                                                                                                                                                                                                                                                                                                                                 |  |                            
|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 mortgage loans 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                           |  | X(1)                            |  |  
|                |  |                                                                                                                                                                                                                                                                                                                                                                                 |  |                            
|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 institution with respect to a foreign financial institution means a foreign financial institution that meets the requirements of Rule 13k-l(b)(I) of the Securities Exchange Act. |  | X                           |  |                                 |  |  
|                |  |                                                                                                                                                                                                                                                                                                                                                                                 |  |                            
|1122(d)(2)(vi)  |  | Unissued checks are safeguarded so as to prevent unauthorized access.                                                                                                                                                                                                                                                                                                           |  | X                           |  |                                 |  |  



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|                 |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |  |                             |  |                                 |  |     
|---------------- |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | --------------------------- |  | ------------------------------- |  | ----
|                 |  | SERVICING CRITERIA                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |  | APPLICABLESERVICINGCRITERIA |  | INAPPLICABLE SERVICING CRITERIA
|Reference        |  | Criteria                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |  | Performed by Company        |  | Performed by Vendor             |  |     
|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; and (D) contain explanations for reconciling items. These reconciling 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)(A) |  | 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;                                                                                                                                                                                                                                                                                                                                                                                       |  | X(2)                        |  |                                 |  |     
|                 |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |  |                            
|1122(d)(3)(i)(B) |  | (B) provide information calculated in accordance with the terms specified in the transaction agreements;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |  | X(2)                        |  |                                 |  |     
|                 |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |  |                            
|1122(d)(3)(i)(C) |  | (C) are filed with the Commission as required by its rules and regulations; and                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |  |                             |  |                                 |  | X   
|                 |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |  |                            
|1122(d)(3)(i)(D) |  | (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(2)                        |  |                                 |  |     
|                 |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |  |                            
|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(2)                        |  |                                 |  |     
|                 |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |  |                            
|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(2)                        |  |                                 |  |     
|                 |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |  |                            
|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(2)                        |  |                                 |  |     
|                 |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |  |                            
|                 |  | 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(3)                        |  |                                 |  | X(4)
|                 |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |  |                            
|1122(d)(4)(ii)   |  | Mortgage loan and related documents are safeguarded as required by the transaction agreements                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |  |                             |  |                                 |  | X(4)
|                 |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |  |                            
|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                           |  |                                 |  |     
|                 |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |  |                            
|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                           |  | X(1)                            |  |     
|                 |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |  |                            
|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                           |  |                                 |  |     
|                 |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |  |                            
|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                           |  |                                 |  |     



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|                 |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |  |                             |  |                                 |  |     
|---------------- |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | --------------------------- |  | ------------------------------- |  | ----
|                 |  | SERVICING CRITERIA                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |  | APPLICABLESERVICINGCRITERIA |  | INAPPLICABLE SERVICING CRITERIA
|Reference        |  | Criteria                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |  | Performed by Company        |  | Performed by Vendor             |  |     
|1122(d)(4)(vii)  |  | Loss mitigation or recovery actions (e.g., forbearance plans, modifications and deeds in lieu of foreclosure, foreclosures and repossessions, as
applicable) are initiated, conducted and concluded in accordance with the tirneframes or other requirements established by the transaction agreements.                                                                                                                                                                                                                                                                                        |  | X                           |  |                                 |  |     
|                 |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |  |                            
|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 at 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                           |  |                                 |  |     
|                 |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |  |                            
|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                           |  |                                 |  |     
|                 |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |  |                            
|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 at least an annual
basis, or such other period specified in 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                           |  |                                 |  |     
|                 |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |  |                            
|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(5)
|                 |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |  |                            
|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 Servicers funds and not charged to the obligor, unless the late payment
was due to the obligors error or omission.                                                                                                                                                                                                                                                                                                                                                            |  |                             |  |                                 |  | X(5)
|                 |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |  |                            
|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 number of days specified in the
transaction agreements.                                                                                                                                                                                                                                                                                                                                                                                      |  |                             |  |                                 |  | X(5)
|                 |  |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |  |                            
|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)(I) through (3) or Item 1115 of Regulation AB, is maintained as set forth in the
transaction agreements.                                                                                                                                                                                                                                                                                                                                                                                                                  |  |                             |  |                                 |  | X   



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Footnote 1  Payments on mortgage loans received via a lockbox are collected by a vendor who deposits the funds into
the appropriate custodial bank clearing account no more than two business days following receipt, or such other number of days specified in the transaction agreements.

Footnote 2  Wachovia has determined for purposes of assessing the servicing criteria listed in Items 1122(d)(3)(i)-(iv) that, pursuant to the Securities and Exchange Commission Telephone Interpretation
11.03, the term investor as used in those Items pertains to the entity to which Wachovia provides the applicable information to the Master Servicer or Trustee and does not include certificate and bondholders. Consequently, the
information regarding such Items provided herein relates to Wachovias provision of such information to the entity who ultimately disseminates such information to the investors.

Footnote 3  The Company did not own the pool assets when they were placed into a transaction included in the Platform. The Company originated the pool assets in the Platform and sold the pool assets to third
parties servicing retained. These third parties subsequently securitized the pool assets. As part of the sale agreement representations and warranties, the Company was responsible for perfection of the mortgage. Per the servicing activities related
to this criterion, as outlined in SEC Telephone Interpretation 11.04, the Companys Management Assessment only includes the mortgage perfection servicing activity.

Footnote 4  The Company did not own the pool asset when it was placed into a transaction included in the Platform. A third party owner of the pool asset is responsible for the maintenance and safeguarding of the
collateral, security, mortgage loan and related documents. As such, these criteria are inapplicable servicing criteria to the Company.

Footnote 5 
The Company has outsourced these servicing criteria to vendors who are providing their own management assessment of the relevant criteria.