[LETTERHEAD OF RESIDENTIAL FUNDING COMPANY, LLC]



                  MANAGEMENT'S ASSERTION CONCERNING COMPLIANCE
                 WITH REGULATION AB ITEM 1122 SERVICING CRITERIA


March 6, 2007

Residential  Funding  Company,   LLC  (the  "Company")  has  responsibility  for
assessing  compliance to Regulation AB Item 1122(d)  Servicing  Criteria for the
RFC Master  Servicing  Platform.  As of, and for the period ending  December 31,
2006,  the Company has used the applicable  1122(d)  servicing  criteria  listed
below for assessing compliance.

-       1122(d)(1)(i),(iii),(iv); 1122(d)(2)(i),(ii),(iii),(v),(vii);
        1122(d)(3)(i),(ii),(iii), (iv); 1122(d)(4)(i),(iii),(iv),(vi),(vii),
        (ix),(xiv),(xv)

The following servicing criteria are not applicable to the Company:

-       1122(d)(1)(ii); 1122(d)(2)(iv),(vi); 1122(d)(4)(ii),(v),(viii),(x),(xi),
        (xii),(xiii)

The  Company  has  complied,  in all  material  respects,  with  the  applicable
servicing  criteria above as of and for the period ending  December 31, 2006 for
the  asset-backed  transactions  listed  in  Appendix  A taken as a whole  (such
transactions,  collectively,  the "RFC  Master  Servicing  Platform"),  with the
exception of criteria 1122(d)(3)(i)(b), as noted in Appendix B.

An  independent  registered  public  accounting  firm has issued an  attestation
report on the Company's  assessment of compliance with the applicable  servicing
criteria as of, and for the period ending December 31, 2006.



/s/ Anthony N. Renzi
--------------------
Anthony N. Renzi
Managing Director
Residential Funding Company, LLC

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APPENDIX A




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STRUCTURED DEALS
2006-EFC1
2006-EFC2
2006-EMX1
2006-EMX2
2006-EMX3
2006-EMX4
2006-EMX5
2006-EMX6
2006-EMX7
2006-EMX8
2006-EMX9
2006-HI1
2006-HI2
2006-HI3
2006-HI4
2006-HI5
2006-HSA1
2006-HSA2
2006-HSA3
2006-HSA4
2006-HSA5
2006-KS1
2006-KS2
2006-KS3
2006-KS4
2006-KS5
2006-KS6
2006-KS7
2006-KS8
2006-KS9
2006-NC1
2006-NC2
2006-NC3
2006-QA1
2006-QA2
2006-QA3
2006-QA4
2006-QA5
2006-QA6
2006-QA7
2006-QA8
2006-QA9
2006-QA10
2006-QA11
2006-QH1
2006-QO1
2006-QO2
2006-QO3
2006-QO4
2006-QO5
2006-QO6
2006-QO7
2006-QO8
2006-QO9
2006-QO10
2006-QS1
2006-QS2
2006-QS3
2006-QS4
2006-QS5
2006-QS6
2006-QS7
2006-QS8
2006-QS9
2006-QS10
2006-QS11
2006-QS12
2006-QS13
2006-QS14
2006-QS15
2006-QS16
2006-QS17
2006-QS18
2006-RS1
2006-RS2
2006-RS3
2006-RS4
2006-RS5
2006-RS6
2006-RZ1
2006-RZ2
2006-RZ3
2006-RZ4
2006-RZ5
2006-S1
2006-S2
2006-S3
2006-S4
2006-S5
2006-S6
2006-S7
2006-S8
2006-S9
2006-S10
2006-S11
2006-S12
2006-SA1
2006-SA2
2006-SA3
2006-SA4
2006-SP1
2006-SP2
2006-SP3
2006-SP4

WHOLE LOAN DEALS
2006-HWH1
2006-HWH1A
2006-HWH2
2006-HWH7
2006-HWH9
2006-HWH10
2006-HWH11
2006-HWH15
2006-HWH16
2006-HWH17
2006-HWH20
2006-HWH21
2006-KWH1
2006-POWH3
2006-POWH8
2006-POWH12
2006-POWH13
2006-POWH13B
2006-POWH14
2006-POWH16
2006-POWH16B
2006-POWH17
2006-POWH17B
2006-POWH18
2006-POWH18B
2006-POWH19
2006-POWH20
2006-POWH21
2006-POWH22
2006-QWH8
2006-QWH20
2006-WH1
2006-WH7
2006-WH11
2006-WH12
2006-WH14A
2006-WH21

CANADIAN DEALS
2006-C4
2006-C5


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APPENDIX B

1.       With regard to 1122 Criteria (d)(3)(i)(b), information required per the
         transaction  documents  were  excluded  from  certain  of the  investor
         reports.

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                                CORRECTIVE ACTION

1. Corrective action was completed to ensure ongoing compliance for the excluded
reporting items.