ASSIGNMENT AND ASSUMPTION AGREEMENT

        ASSIGNMENT AND ASSUMPTION AGREEMENT,  dated June 28, 2007, between Residential Funding
Company,  LLC, a Delaware limited liability company ("RFC"),  and Residential Funding Mortgage
Securities I, Inc., a Delaware corporation (the "Company").

                                           Recitals

I.      RFC has entered into contracts  ("Seller  Contracts")  with various  seller/servicers,
pursuant to which such seller/servicers sell to RFC mortgage loans.

II.     The  Company  wishes to  purchase  from RFC  certain  Mortgage  Loans (as  hereinafter
defined) sold to RFC pursuant to the Seller Contracts.

III.    The Company,  RFC, as master servicer and U.S. Bank National  Association,  as trustee
(the  "Trustee"),  are  entering  into a  Series  Supplement,  dated as of June 1,  2007  (the
"Series  Supplement")  to the Standard Terms of Pooling and Servicing  Agreement,  dated as of
April 1, 2006 (together with the Series  Supplement,  the "Pooling and Servicing  Agreement"),
pursuant  to  which  the  Company  proposes  to  issue  Mortgage  Pass-Through   Certificates,
Series 2007-SA3 (the "Certificates")  consisting of classes designated as the Class I-A, Class
II-A-1,  Class II-A-2,  Class III-A-1,  Class III-A-2,  Class  III-A-3,  Class III-A-4,  Class
IV-A, Class R-I and Class R-II Certificates (collectively,  the "Senior Certificates"),  Class
M-1, Class M-2 and Class M-3  (collectively,  the "Class M Certificates") and Class B-1, Class
B-2 and  Class  B-3  (collectively,  the  "Class  B  Certificates"),  representing  beneficial
ownership  interests  in a  trust  fund  consisting  primarily  of a pool  of  mortgage  loans
identified in Exhibit One and Exhibit Two to the Series Supplement (the "Mortgage Loans").

IV.     In connection with the purchase of the Mortgage Loans,  the Company will assign to RFC
a de  minimis  portion  of each of the Class R-I and Class R-II  Certificates  (together,  the
"Class R Certificates").

V.      In  connection  with the  purchase  of the  Mortgage  Loans  and the  issuance  of the
Certificates,  RFC wishes to make certain  representations  and  warranties to the Company and
to assign  certain of its rights under the Seller  Contracts  to the Company,  and the Company
wishes to assume certain of RFC's obligations under the Seller Contracts.

VI.     The  Company  and RFC  intend  that the  conveyance  by RFC to the  Company of all its
right,  title and  interest in and to the  Mortgage  Loans  pursuant to this  Agreement  shall
constitute a purchase and sale and not a loan.

        NOW THEREFORE,  in  consideration  of the recitals and the mutual  promises herein and
other good and valuable consideration, the parties agree as follows:

Section 1.       All  capitalized  terms used but not defined  herein  shall have the meanings
assigned thereto in the Pooling and Servicing Agreement.

Section 2.       Concurrently  with the execution and delivery  hereof,  RFC hereby assigns to
the Company  without  recourse  all of its right,  title and  interest in and to the  Mortgage
Loans,  including  all  interest  and  principal,  received on or with respect to the Mortgage
Loans after June 1, 2007 (other than payments of principal  and interest,  due on the Mortgage
Loans in June 2007). In  consideration  of such  assignment,  RFC or its designee will receive
from the Company in  immediately  available  funds an amount equal to  $362,924,190.53  plus a
de minimis  portion of each of the Class R  Certificates.  In connection  with such assignment
and at the  Company's  direction,  RFC has in  respect  of each  Mortgage  Loan  endorsed  the
related  Mortgage  Note (other than any Destroyed  Mortgage  Note) to the order of the Trustee
and delivered an assignment of mortgage or security instrument,  as applicable,  in recordable
form to the  Trustee or its agent.  A  "Destroyed  Mortgage  Note"  means a Mortgage  Note the
original of which was permanently lost or destroyed.

        RFC and the Company  agree that the sale of each Pledged  Asset Loan  pursuant to this
Agreement will also constitute the  assignment,  sale,  setting-over,  transfer and conveyance
to the  Company,  without  recourse  (but  subject  to RFC's  covenants,  representations  and
warranties  specifically  provided  herein),  of all of  RFC's  obligations  and all of  RFC's
right,  title and  interest in, to and under,  whether now  existing or hereafter  acquired as
owner of such  Pledged  Asset Loan with  respect to any and all  money,  securities,  security
entitlements,  accounts,  general intangibles,  payment intangibles,  instruments,  documents,
deposit  accounts,  certificates  of  deposit,  commodities  contracts,  and other  investment
property and other  property of whatever kind or  description  consisting  of, arising from or
related to, (i) the Credit Support Pledge  Agreement,  the Funding and Pledge  Agreement among
the Mortgagor or other Person pledging the related Pledged Assets (the  "Customer"),  Combined
Collateral LLC and National  Financial  Services  Corporation,  and the Additional  Collateral
Agreement  between  GMAC  Mortgage,  LLC  and  the  Customer   (collectively,   the  "Assigned
Contracts"),  (ii) all rights,  powers and remedies of RFC as owner of such Pledged Asset Loan
under or in connection  with the Assigned  Contracts,  whether arising under the terms of such
Assigned  Contracts,  by statute, at law or in equity, or otherwise arising out of any default
by the Mortgagor under or in connection with the Assigned  Contracts,  including all rights to
exercise  any  election  or  option or to make any  decision  or  determination  or to give or
receive any notice,  consent,  approval or waiver  thereunder,  (iii) the Pledged  Amounts and
all  money,  securities,  security  entitlements,   accounts,  general  intangibles,   payment
intangibles,  instruments,  documents, deposit accounts,  certificates of deposit, commodities
contracts,  and other  investment  property and other property of whatever kind or description
and, all cash and non-cash  proceeds of the sale,  exchange,  or redemption  of, and all stock
or  conversion  rights,  rights to  subscribe,  liquidation  dividends or  preferences,  stock
dividends, rights to interest,  dividends,  earnings, income, rents, issues, profits, interest
payments or other  distributions  of cash or other property that secures a Pledged Asset Loan,
(iv) all  documents,  books and records  concerning  the  foregoing  (including  all  computer
programs,  tapes,  disks  and  related  items  containing  any such  information)  and (v) all
insurance proceeds (including  proceeds from the Federal Deposit Insurance  Corporation or the
Securities  Investor  Protection  Corporation  or any other  insurance  company) of any of the
foregoing or  replacements  thereof or  substitutions  therefor,  proceeds of proceeds and the
conversion,   voluntary  or  involuntary,  of  any  thereof.  The  foregoing  transfer,  sale,
assignment and  conveyance  does not constitute and is not intended to result in the creation,
or an assumption by the Company,  of any  obligation of RFC, or any other Person in connection
with the Pledged Assets or under any agreement or instrument  relating thereto,  including any
obligation to the Mortgagor, other than as owner of the Pledged Asset Loan.

        The  Company  and RFC  intend  that the  conveyance  by RFC to the  Company of all its
right,  title and interest in and to the Mortgage  Loans  pursuant to this Section 2 shall be,
and be construed  as, a sale of the  Mortgage  Loans by RFC to the  Company.  It is,  further,
not intended  that such  conveyance  be deemed to be a pledge of the Mortgage  Loans by RFC to
the  Company  to secure a debt or other  obligation  of RFC.  However,  in the event  that the
Mortgage  Loans are held to be property of RFC,  or if for any reason this  Agreement  is held
or deemed to create a security  interest in the Mortgage  Loans,  then it is intended that (a)
this  Agreement  shall be a security  agreement  within the meaning of Articles 8 and 9 of the
Minnesota  Uniform  Commercial Code and the Uniform  Commercial  Code of any other  applicable
jurisdiction;  (b) the  conveyance  provided  for in this  Section  shall be deemed to be, and
hereby is, a grant by RFC to the Company of a security  interest in all of RFC's right,  title
and  interest,  whether  now  owned  or  hereafter  acquired,  in and to any and  all  general
intangibles,  payment intangibles,  accounts,  chattel paper, instruments,  documents,  money,
deposit accounts,  certificates of deposit,  goods,  letters of credit,  advices of credit and
investment property  consisting of, arising from or relating to any of the following:  (A) the
Mortgage  Loans,  including (i) with respect to each  Cooperative  Loan, the related  Mortgage
Note,  Security  Agreement,  Assignment of Proprietary  Lease,  Cooperative Stock Certificate,
Cooperative  Lease,  any insurance  policies and all other  documents in the related  Mortgage
File and (ii) with respect to each Mortgage Loan other than a  Cooperative  Loan,  the related
Mortgage Note,  the Mortgage,  any insurance  policies and all other  documents in the related
Mortgage  File,  (B) all  monies  due or to  become  due  pursuant  to the  Mortgage  Loans in
accordance  with the terms  thereof  and (C) all  proceeds  of the  conversion,  voluntary  or
involuntary,  of  the  foregoing  into  cash,  instruments,   securities  or  other  property,
including  without  limitation  all  amounts  from  time  to  time  held  or  invested  in the
Certificate  Account  or the  Custodial  Account,  whether  in the form of cash,  instruments,
securities or other  property;  (c) the possession by the Trustee,  the Custodian or any other
agent  of the  Trustee  of  Mortgage  Notes or such  other  items of  property  as  constitute
instruments,  money,  payment  intangibles,  negotiable  documents,  goods,  deposit accounts,
letters of credit,  advices of credit investment  property or chattel paper shall be deemed to
be possession  by the secured  party,  or possession by a purchaser or a person  designated by
such  secured  party,  for  purposes  of  perfecting  the  security  interest  pursuant to the
Minnesota  Uniform  Commercial Code and the Uniform  Commercial  Code of any other  applicable
jurisdiction  (including,  without limitation,  Sections 8-106, 9-313 and 9-106 thereof);  and
(d)  notifications  to  persons  holding  such  property,  and  acknowledgments,  receipts  or
confirmations  from  persons  holding  such  property,  shall be deemed  notifications  to, or
acknowledgments receipts or confirmations from, securities  intermediaries,  bailees or agents
of, or persons  holding for (as  applicable)  the Trustee for the purpose of  perfecting  such
security  interest  under  applicable  law.  RFC  shall,  to the extent  consistent  with this
Agreement,  take  such  reasonable  actions  as may be  necessary  to  ensure  that,  if  this
Agreement  were  determined to create a security  interest in the Mortgage Loans and the other
property  described  above,  such  security  interest  would be  determined  to be a perfected
security  interest of first  priority  under  applicable  law and will be  maintained  as such
throughout  the term of this  Agreement.  Without  limiting the  generality of the  foregoing,
RFC shall  prepare and deliver to the Company not less than 15 days prior to any filing  date,
and the Company  shall file,  or shall cause to be filed,  at the expense of RFC,  all filings
necessary to maintain the  effectiveness of any original  filings  necessary under the Uniform
Commercial Code as in effect in any  jurisdiction to perfect the Company's  security  interest
in or lien on the Mortgage Loans,  including without  limitation (x) continuation  statements,
and (y) such other  statements  as may be  occasioned  by (1) any change of name of RFC or the
Company,  (2) any change of location of the place of  business or the chief  executive  office
of RFC, or (3) any transfer of any interest of RFC in any Mortgage Loan.

        Notwithstanding  the  foregoing,  (i) the Master  Servicer  shall retain all servicing
rights (including,  without  limitation,  primary servicing and master servicing)  relating to
or arising out of the Mortgage  Loans,  and all rights to receive  servicing  fees,  servicing
income and other  payments made as  compensation  for such  servicing  granted to it under the
Pooling  and  Servicing  Agreement  pursuant  to the terms and  conditions  set forth  therein
(collectively,  the "Servicing  Rights") and (ii) the Servicing Rights are not included in the
collateral  in which RFC grants a security  interest  pursuant  to the  immediately  preceding
paragraph.

Section 3.       Concurrently  with the  execution  and delivery  hereof,  the Company  hereby
assigns to RFC without  recourse  all of its right,  title and interest in and to a de minimis
portion of each of the Class R  Certificates  as part of the  consideration  payable to RFC by
the Company pursuant to this Agreement.

Section 4.       RFC  represents  and  warrants to the Company  that on the date of  execution
hereof (or, if otherwise specified below, as of the date so specified):

i.      The  information  set forth in  Exhibit  One,  Exhibit  Two and  Exhibit  Three to the
Series Supplement  with respect to each Mortgage Loan or the Mortgage  Loans,  as the case may
be, is true and  correct,  in all material  respects,  at the date or dates  respecting  which
such information is furnished;

ii.     Each mortgage loan with a  Loan-to-Value  Ratio at  origination in excess of 80%, will
be insured by a primary mortgage  insurance policy (a "Primary  Insurance Policy") covering at
least 30% of the principal  balance of the Mortgage Loan at origination  if the  Loan-to-Value
Ratio is between  95.00% and  90.01%,  at least 25% of the  balance  of the  mortgage  loan at
origination if the Loan-to-Value  Ratio is between 90.00% and 85.01%,  and at least 12% of the
balance of the mortgage loan at origination if the  Loan-to-Value  Ratio is between 85.00% and
80.01%.  To the best of the  Company's  knowledge,  each such Primary  Insurance  Policy is in
full force and effect and the Trustee is entitled to the benefits thereunder;

iii.    Each  Primary  Insurance  Policy  insures  the named  insured and its  successors  and
assigns,  and the  issuer of the  Primary  Insurance  Policy  is an  insurance  company  whose
claims-paying ability is currently acceptable to the Rating Agencies;

iv.     Immediately  prior to the  assignment  of the Mortgage  Loans to the Company,  RFC had
good title to, and was the sole owner of,  each  Mortgage  Loan free and clear of any  pledge,
lien,   encumbrance  or  security  interest  (other  than  rights  to  servicing  and  related
compensation  and,  with respect to certain  Mortgage  Loans,  the monthly  payment due on the
first Due Date  following  the  Cut-off  Date),  and no action  has been taken or failed to be
taken by RFC that would materially  adversely affect the  enforceability  of any Mortgage Loan
or the interests therein of any holder of the Certificates;

v.      No Mortgage  Loan was 30 or more days  delinquent in payment of principal and interest
as of the  Cut-off  Date and no  Mortgage  Loan has been so  delinquent  more than once in the
12-month period prior to the Cut-off Date;

vi.     Subject to clause (v) above as respects  delinquencies,  there is no default,  breach,
violation or event of  acceleration  existing under any Mortgage Note or Mortgage and no event
which,  with notice and  expiration of any grace or cure period,  would  constitute a default,
breach,  violation or event of acceleration,  and no such default,  breach, violation or event
of  acceleration  has been waived by the Seller or by any other entity involved in originating
or servicing a Mortgage Loan;

vii.    There is no delinquent tax or assessment lien against any Mortgaged Property;

viii.   No  Mortgagor  has any right of offset,  defense  or  counterclaim  as to the  related
Mortgage Note or Mortgage  except as may be provided  under the  Servicemembers'  Civil Relief
Act;

ix.     None of the Mortgage Loans are Buy-Down Mortgage Loans;

x.      There are no  mechanics'  liens or claims for work,  labor or material  affecting  any
Mortgaged  Property  which  are or may be a lien  prior  to,  or equal  with,  the lien of the
related  Mortgage,  except  such liens  that are  insured  or  indemnified  against by a title
insurance policy described under clause (xv) below;

xi.     Each  Mortgaged  Property  is free of  damage  and in good  repair  and no  notice  of
condemnation  has been given with  respect  thereto  and RFC knows of  nothing  involving  any
Mortgaged  Property  that could  reasonably  be expected to  materially  adversely  affect the
value or marketability of any Mortgaged Property;

xii.    Each  Mortgage  Loan at the time it was made  complied in all material  respects  with
applicable  local,  state and federal  laws,  including,  but not  limited to, all  applicable
anti-predatory lending laws;

xiii.   Each Mortgage  contains  customary and enforceable  provisions which render the rights
and  remedies  of the holder  adequate to realize the  benefits  of the  security  against the
Mortgaged  Property,  including  (i) in the case of a  Mortgage  that is a deed of  trust,  by
trustee's sale,  (ii) by summary  foreclosure,  if available  under  applicable law, and (iii)
otherwise  by  foreclosure,  and there is no  homestead  or other  exemption  available to the
Mortgagor  that  would  interfere  with  such  right to sell at a  trustee's  sale or right to
foreclosure,  subject  in each  case  to  applicable  federal  and  state  laws  and  judicial
precedents with respect to bankruptcy and right of redemption;

xiv.    With respect to each Mortgage that is a deed of trust, a trustee duly qualified  under
applicable  law to serve as such is properly  named,  designated  and  serving,  and except in
connection  with a  trustee's  sale after  default by a  Mortgagor,  no fees or  expenses  are
payable by the Seller or RFC to the trustee under any Mortgage that is a deed of trust;

xv.     A policy of title  insurance in the form and amount  required by the Program Guide was
effective as of the closing of each  Mortgage  Loan,  is valid and binding and remains in full
force and  effect,  unless the  Mortgaged  Properties  are located in the State of Iowa and an
attorney's certificate has been provided as described in the Program Guide;

xvi.    The  Mortgage  Loans  are  conventional,  hybrid  adjustable-rate,  fully  amortizing,
(subject to interest only periods,  if  applicable)  first lien mortgage loans having terms to
maturity of not more than 30 years from the date of origination or  modification  with monthly
payments  due,  with  respect to a majority of the  Mortgage  Loans,  on the first day of each
month;

xvii.   No Mortgage Loan provides for deferred interest or negative amortization;

xviii.  The  improvements  upon the Mortgaged  Properties are insured against loss by fire and
other hazards as required by the Program Guide  including  flood  insurance if required  under
the National  Flood  Insurance  Act of 1968, as amended.  The Mortgage  requires the Mortgagor
to maintain  such  casualty  insurance  at the  Mortgagor's  expense,  and on the  Mortgagor's
failure to do so,  authorize the holder of the Mortgage to obtain and maintain such  insurance
at the Mortgagor's expense and to seek reimbursement therefore from the Mortgagor;

xix.    If any of the  Mortgage  Loans are secured by a leasehold  interest,  with  respect to
each  leasehold  interest:  the use of  leasehold  estates for  residential  properties  is an
accepted  practice in the area where the related  Mortgaged  Property is located;  residential
property in such area  consisting  of leasehold  estates is readily  marketable;  the lease is
recorded and no party is in any way in breach of any  provision of such lease;  the  leasehold
is in full force and effect and is not subject to any prior lien or  encumbrance  by which the
leasehold  could be terminated or subject to any charge or penalty;  and the remaining term of
the lease does not  terminate  less than ten years after the  maturity  date of such  Mortgage
Loan;

xx.     Each Assigned  Contract  relating to each Pledged  Asset Loan is a valid,  binding and
legally  enforceable  obligation of the parties thereto,  enforceable in accordance with their
terms,  except as limited by bankruptcy,  insolvency or other similar laws affecting generally
the enforcement of creditor's rights;

xxi.    The  Assignor is the holder of all of the right,  title and  interest as owner of each
Pledged  Asset  Loan  in and to each  of the  Assigned  Contracts  delivered  and  sold to the
Company  hereunder,  and the assignment hereof by RFC validly transfers such right,  title and
interest to the  Company  free and clear of any pledge,  lien,  or security  interest or other
encumbrance of any Person;

xxii.   The full amount of the  Pledged  Amount with  respect to such  Pledged  Asset Loan has
been  deposited  with the  custodian  under the  Credit  Support  Pledge  Agreement  and is on
deposit in the custodial account held thereunder as of the date hereof;

xxiii.  RFC is a member of MERS,  in good  standing,  and  current  in payment of all fees and
assessments  imposed  by MERS,  and has  complied  with all  rules and  procedures  of MERS in
connection  with its  assignment  to the Trustee as  assignee  of the Company of the  Mortgage
relating to each Mortgage Loan that is registered  with MERS,  including,  among other things,
that RFC shall have  confirmed  the  transfer to the Trustee,  as assignee of the Company,  of
the Mortgage on the MERS(R)System;

xxiv.   No instrument  of release or waiver has been executed in connection  with the Mortgage
Loans,  and no  Mortgagor  has been  released,  in whole or in part  from its  obligations  in
connection with a Mortgage Loan;

xxv.    With  respect  to each  Mortgage  Loan,  either  (i) the  Mortgage  Loan is  assumable
pursuant to the terms of the Mortgage  Note,  or (ii) the Mortgage  Loan  contains a customary
provision  for  the  acceleration  of the  payment  of the  unpaid  principal  balance  of the
Mortgage  Loan in the event the related  Mortgaged  Property is sold without the prior consent
of the mortgagee thereunder;

xxvi.   The proceeds of the Mortgage Loan have been fully  disbursed,  there is no requirement
for future  advances  thereunder and any and all  requirements as to completion of any on-site
or off-site  improvements and as to disbursements of any escrow funds therefor  (including any
escrow funds held to make Monthly  Payments  pending  completion  of such  improvements)  have
been complied  with.  All costs,  fees and expenses  incurred in making,  closing or recording
the Mortgage Loans were paid;

xxvii.  Except  with  respect  to  approximately  6.7%  of the  Mortgage  Loans  (for  which a
valuation  was  obtained by using an  automated  valuation  platform  developed  by RFC),  the
appraisal  was made by an appraiser  who meets the minimum  qualifications  for  appraisers as
specified in the Program Guide;

xxviii. To the best of RFC's knowledge,  any escrow  arrangements  established with respect to
any Mortgage  Loan are in compliance  with all  applicable  local,  state and federal laws and
are in compliance with the terms of the related Mortgage Note;

xxix.   Each  Mortgage  Loan was  originated  (1) by a savings and loan  association,  savings
bank,  commercial  bank,  credit  union,  insurance  company  or similar  institution  that is
supervised and examined by a federal or state  authority,  (2) by a mortgagee  approved by the
Secretary of HUD  pursuant to Sections  203 and 211 of the  National  Housing Act, as amended,
or (3) by a mortgage  broker or  correspondent  lender in a manner such that the  Certificates
would qualify as "mortgage related  securities"  within the meaning of Section 3(a)(41) of the
Securities Exchange Act of 1934, as amended;

xxx.    All  improvements  which were  considered in  determining  the Appraised  Value of the
Mortgaged  Properties lie wholly within the boundaries and the building  restriction  lines of
the Mortgaged  Properties,  or the policy of title  insurance  affirmatively  insures  against
loss or damage by reason of any violation,  variation,  encroachment  or adverse  circumstance
that either is disclosed or would have been disclosed by an accurate survey;

xxxi.   Each Mortgage Note and Mortgage  constitutes a legal,  valid and binding obligation of
the  Borrower  enforceable  in  accordance  with its terms  except as limited  by  bankruptcy,
insolvency or other similar laws affecting generally the enforcement of creditor's rights;

xxxii.  None of the Mortgage  Loans are subject to the Home  Ownership  and Equity  Protection
Act of 1994;

xxxiii. None of the  Mortgage  Loans are loans that,  under  applicable  state or local law in
effect  at the  time of  origination  of the  loan,  are  referred  to as (1)  "high-cost"  or
"covered" loans or (2) any other similar  designation if the law imposes greater  restrictions
or  additional  legal  liability for  residential  mortgage  loans with high  interest  rates,
points and/or fees;

xxxiv.  No Mortgage Loan was originated on or after October 1, 2002 and before March 7,  2003,
which is secured by property located in the State of Georgia;

xxxv.   None of the proceeds of any Mortgage  Loan were used to finance the purchase of single
premium credit insurance policies;

xxxvi.  No Mortgage Loan  contains  prepayment  penalties  that extend beyond five years after
the date of origination;

xxxvii. No Mortgage Loan is a High Cost Loan or Covered  Loan,  as  applicable  (as such terms
are  defined in  Appendix E of the  Standard & Poor's  Glossary  For File  Format For  LEVELS(R)
Version 5.7 Revised  (attached  hereto as Exhibit A));  provided that no Qualified  Substitute
Mortgage  Loan  shall be a High Cost  Loan or  Covered  Loan (as such  terms  are  defined  in
Appendix E of the  Standard & Poor's  Glossary  For File  Format For  LEVELS(R)in effect on the
date of  substitution),  unless the Company shall have received from S&P written  confirmation
that the  inclusion  of any such  Mortgage  Loan will not  adversely  affect the then  current
ratings assigned to any of the Certificates by S&P;

xxxviii.       Each   mortgage   loan   constitutes   a  qualified   mortgage   under  Section
860G(a)(3)(A) of the Code and Treasury Regulations Section 1.860G-2(A)(1); and

xxxix.  No fraud or  misrepresentation  has taken place in connection  with the origination of
any Mortgage Loan.

               RFC shall  provide  written  notice to GMAC  Mortgage,  LLC of the sale of each
Pledged  Asset Loan to the  Company  hereunder  and by the  Company to the  Trustee  under the
Pooling  and  Servicing  Agreement,  and shall  maintain  the  Schedule  of  Additional  Owner
Mortgage  Loans (as defined in the Credit Support  Pledge  Agreement),  showing the Trustee as
the Additional  Owner of each such Pledged Asset Loan,  all in accordance  with Section 7.1 of
the Credit Support Pledge Agreement.

               Upon  discovery  by RFC or upon  notice  from the  Company or the  Trustee of a
breach of the foregoing  representations  and warranties in respect of any Mortgage Loan which
materially and adversely  affects the interests of any holders of the  Certificates  or of the
Company in such  Mortgage  Loan or upon the  occurrence  of a  Repurchase  Event  (hereinafter
defined),  notice of which  breach or  occurrence  shall be given to the Company by RFC, if it
discovers  the same,  RFC shall,  within 90 days after the earlier of its discovery or receipt
of notice thereof,  either cure such breach or Repurchase  Event in all material  respects or,
except as otherwise  provided in Section 2.04 of the Pooling and Servicing  Agreement,  either
(i) purchase  such  Mortgage  Loan from the Trustee or the  Company,  as the case may be, at a
price  equal to the  Purchase  Price for such  Mortgage  Loan or (ii)  substitute  a Qualified
Substitute  Mortgage  Loan or Loans for such  Mortgage  Loan in the manner and  subject to the
limitations set forth in Section 2.04  of the Pooling and Servicing  Agreement.  If the breach
of  representation  and warranty that gave rise to the  obligation to repurchase or substitute
a Mortgage  Loan pursuant to this Section 4 was the  representation  set forth in clause (xii)
or (xxxviii) of this  Section 4, then RFC shall pay to the Trust Fund,  concurrently  with and
in addition  to the  remedies  provided  in the  preceding  sentence,  an amount  equal to any
liability,  penalty or expense that was actually  incurred and paid out of or on behalf of the
Trust Fund,  and that  directly  resulted  from such  breach,  or if incurred  and paid by the
Trust Fund thereafter, concurrently with such payment.

Section 5.       With  respect  to  each  Mortgage  Loan,  a  first  lien   repurchase   event
("Repurchase  Event") shall have  occurred if it is  discovered  that, as of the date thereof,
the related  Mortgage  was not a valid first lien on the related  Mortgaged  Property  subject
only to (i) the lien of real  property  taxes and  assessments  not yet due and payable,  (ii)
covenants,  conditions,  and  restrictions,  rights of way,  easements  and other  matters  of
public  record  as of the  date of  recording  of such  Mortgage  and such  permissible  title
exceptions  as are  listed  in the  Program  Guide  and  (iii)  other  matters  to which  like
properties  are commonly  subject which do not  materially  adversely  affect the value,  use,
enjoyment  or  marketability  of the  Mortgaged  Property.  In  addition,  with respect to any
Mortgage  Loan  listed on the  attached  Schedule  A with  respect  to which any  document  or
documents  constituting  a part of the Mortgage  File are missing or defective in any material
respect  as to which the  Company  delivers  to the  Trustee  or the  Custodian  an  affidavit
certifying that the original  Mortgage Note has been lost or destroyed,  if such Mortgage Loan
subsequently  is in  default  and  the  enforcement  thereof  or of the  related  Mortgage  is
materially  adversely  affected  by the  absence  or  defectiveness  of any such  document  or
documents of the original  Mortgage Note, a Repurchase  Event shall be deemed to have occurred
and RFC will be obligated to  repurchase  or  substitute  for such Mortgage Loan in the manner
set forth in Section 4 above.

Section 6.       This Agreement  shall inure to the benefit of and be binding upon the parties
hereto and their respective  successors and assigns,  and no other person shall have any right
or obligation hereunder.



                                   [Signature Page Follows]









               IN  WITNESS  WHEREOF,  the  parties  have  entered  into  this  Assignment  and
Assumption Agreement on the date first written above.

                                            RESIDENTIAL FUNDING COMPANY, LLC



                                            By:_____________________
                                            Name:  Tim Jacobson
                                            Title:    Associate



                                            RESIDENTIAL FUNDING MORTGAGE
                                            SECURITIES I, INC.



                                            By:____________________
                                            Name:  Jeffrey Blaschko
                                            Title:    Vice President










                                          EXHIBIT A


APPENDIX E - Standard & Poor's Predatory Lending Categories - Version 6.0
Standard & Poor's  has  categorized  loans  governed  by  anti-predatory  lending  laws in the
Jurisdictions  listed below into three  categories  based upon a  combination  of factors that
include (a) the risk  exposure  associated  with the assignee  liability and (b) the tests and
thresholds  set forth in those  laws.  Note that  certain  loans  classified  by the  relevant
statute as Covered are  included in Standard & Poor's  High Cost Loan  Category  because  they
included  thresholds and tests that are typical of what is generally  considered  High Cost by
the industry.


STANDARD & POOR'S HIGH COST LOAN CATEGORIZATION

--------------------------------------------------------------------------------------------------------------------------------
                                      ------------------------------------------------------ -----------------------------------
         State/Jurisdiction             Name of Anti-Predatory Lending Law/Effective Date        Category under Applicable
                                                                                                 Anti-Predatory Lending Law
------------------------------------- ------------------------------------------------------ -----------------------------------

Arkansas                              Arkansas Home Loan  Protection Act, Ark. Code Ann.ss.ss.High Cost Home Loan
                                      23-53-101 et seq.

                                      Effective July 16, 2003
------------------------------------- ------------------------------------------------------ -----------------------------------

Cleveland Heights, OH                 Ordinance No. 72-2003  (PSH),  Mun. Codess.ss.757.01 et  Covered Loan
                                      seq.

                                      Effective June 2, 2003
------------------------------------- ------------------------------------------------------ -----------------------------------

Colorado                              Consumer  Equity  Protection,  Colo.  Stat.  Ann.ss.ss.Covered Loan
                                      5-3.5-101 et seq.

                                      Effective  for covered  loans offered or entered into
                                      on or after January 1, 2003.  Other provisions of the
                                      Act took effect on June 7, 2002
------------------------------------- ------------------------------------------------------ -----------------------------------

Connecticut                           Connecticut  Abusive Home Loan Lending Practices Act,  High Cost Home Loan
                                      Conn. Gen. Stat.ss.ss.36a-746 et seq.

                                      Effective October 1, 2001
------------------------------------- ------------------------------------------------------ -----------------------------------

District of Columbia                  Home Loan  Protection Act, D.C. Codess.ss.26-1151.01 et  Covered Loan
                                      seq.

                                      Effective  for loans  closed on or after  January 28,
                                      2003
------------------------------------- ------------------------------------------------------ -----------------------------------

Florida                               Fair Lending Act, Fla. Stat. Ann.ss.ss.494.0078 et seq.  High Cost Home Loan

                                      Effective October 2, 2002
------------------------------------- ------------------------------------------------------ -----------------------------------

Georgia  (Oct.  1,  2002 -  Mar.  6,  Georgia  Fair Lending Act, Ga. Code Ann.ss.ss.7-6A-1 et  High Cost Home Loan
2003)                                 seq.

                                      Effective October 1, 2002 - March 6, 2003
------------------------------------- ------------------------------------------------------ -----------------------------------

Georgia as amended  (Mar.  7, 2003 -  Georgia  Fair Lending Act, Ga. Code Ann.ss.ss.7-6A-1 et  High Cost Home Loan
current)                              seq.

                                      Effective for loans closed on or after March 7, 2003
------------------------------------- ------------------------------------------------------ -----------------------------------

HOEPA Section 32                      Home Ownership and Equity  Protection Act of 1994, 15  High Cost Loan
                                      U.S.C.ss.1639, 12 C.F.R.ss.ss.226.32 and 226.34

                                      Effective October 1, 1995, amendments October 1, 2002
------------------------------------- ------------------------------------------------------ -----------------------------------
Illinois                              High Risk Home Loan Act, Ill. Comp.  Stat.  tit. 815,  High Risk Home Loan
                                    ss.ss.137/5 et seq.

                                      Effective  January  1,  2004  (prior  to  this  date,
                                      regulations  under  Residential  Mortgage License Act
                                      effective from May 14, 2001)
------------------------------------- ------------------------------------------------------ -----------------------------------
                                      Indiana Home Loan Practices Act, Ind. Code Ann.ss.ss.
Indiana                               24-9-1-1 et seq.                                       High Cost Home Loans

                                      Effective  January 1, 2005;  amended by 2005 HB 1179,
                                      effective July 1, 2005
------------------------------------- ------------------------------------------------------ -----------------------------------

Kansas                                Consumer  Credit Code,  Kan. Stat.  Ann.ss.ss.16a-1-101  High Loan to Value  Consumer  Loan
                                      et seq.                                                (id.ss.16a-3-207) and;

                                      Sections  16a-1-301  and 16a-3-207  became  effective
                                      April 14, 1999;  Section  16a-3-308a became effective
                                      July 1, 1999
------------------------------------- ------------------------------------------------------ -----------------------------------

                                                                                             High  APR  Consumer  Loan  (id.ss.
                                                                                             16a-3-308a)
------------------------------------- ------------------------------------------------------ -----------------------------------

Kentucky                              2003 KY H.B.  287 - High Cost Home Loan Act, Ky. Rev.  High Cost Home Loan
                                      Stat.ss.ss.360.100 et seq.

                                      Effective June 24, 2003
------------------------------------- ------------------------------------------------------ -----------------------------------

Maine                                 Truth in Lending,  Me. Rev. Stat.  tit. 9-A,ss.ss.8-101  High Rate High Fee Mortgage
                                      et seq.

                                      Effective  September  29,  1995 and as  amended  from
                                      time to time
------------------------------------- ------------------------------------------------------ -----------------------------------

Massachusetts                         Part 40 and Part 32, 209 C.M.R.ss.ss.32.00 et seq. and  High Cost Home Loan
                                      209 C.M.R.ss.ss.40.01 et seq.

                                      Effective  March 22,  2001 and  amended  from time to
                                      time
------------------------------------- ------------------------------------------------------ -----------------------------------

Nevada                                Assembly Bill No. 284,  Nev.  Rev.  Stat.ss.ss.598D.010  Home Loan
                                      et seq.

                                      Effective October 1, 2003
------------------------------------- ------------------------------------------------------ -----------------------------------

New Jersey                            New Jersey Home Ownership  Security Act of 2002, N.J.  High Cost Home Loan
                                      Rev. Stat.ss.ss.46:10B-22 et seq.

                                      Effective  for loans closed on or after  November 27,
                                      2003
------------------------------------- ------------------------------------------------------ -----------------------------------

New Mexico                            Home  Loan   Protection   Act,  N.M.  Rev.  Stat.ss.ss.High Cost Home Loan
                                      58-21A-1 et seq.

                                      Effective  as  of  January  1,  2004;  Revised  as of
                                      February 26, 2004
------------------------------------- ------------------------------------------------------ -----------------------------------

New York                              N.Y. Banking Law Article 6-l                           High Cost Home Loan

                                      Effective for applications  made on or after April 1,
                                      2003
------------------------------------- ------------------------------------------------------ -----------------------------------

North Carolina                        Restrictions   and  Limitations  on  High  Cost  Home  High Cost Home Loan
                                      Loans, N.C. Gen. Stat.ss.ss.24-1.1E et seq.

                                      Effective  July 1,  2000;  amended  October  1,  2003
                                      (adding open-end lines of credit)
------------------------------------- ------------------------------------------------------ -----------------------------------

Ohio                                  H.B. 386  (codified  in various  sections of the Ohio  Covered Loan
                                      Code), Ohio Rev. Code Ann.ss.ss.1349.25 et seq.

                                      Effective May 24, 2002
------------------------------------- ------------------------------------------------------ -----------------------------------

Rhode Island                          Rhode  Island Home Loan  Protection  Act,  R.I.  Gen.  High Cost Home Loan
                                      Lawsss.ss.34-25.2-1  et seq.  Effective  December  31,
                                      2006
------------------------------------- ------------------------------------------------------ -----------------------------------

Oklahoma                              Consumer  Credit Code  (codified in various  sections  Subsection 10 Mortgage
                                      of Title 14A)

                                      Effective July 1, 2000;  amended effective January 1,
                                      2004
------------------------------------- ------------------------------------------------------ -----------------------------------

South Carolina                        South  Carolina  High Cost and  Consumer  Home  Loans  High Cost Home Loan
                                      Act, S.C. Code Ann.ss.ss.37-23-10 et seq.

                                      Effective for loans taken on or after January 1, 2004
------------------------------------- ------------------------------------------------------ -----------------------------------

Tennessee                             Tennessee Home Loan  Protection  Act, Tenn. Code Ann.  High Cost Home Loan
                                    ss.ss.45-20-101 et seq.  Effective January 1, 2007
------------------------------------- ------------------------------------------------------ -----------------------------------

West Virginia                         West Virginia  Residential  Mortgage  Lender,  Broker  West  Virginia  Mortgage  Loan Act
                                      and Servicer Act, W. Va. Code Ann.ss.ss.31-17-1 et seq.  Loan

                                      Effective June 5, 2002
------------------------------------- ------------------------------------------------------ -----------------------------------


STANDARD & POOR'S COVERED LOAN CATEGORIZATION

------------------------------------- ------------------------------------------------------ -----------------------------------
         State/Jurisdiction             Name of Anti-Predatory Lending Law/Effective Date        Category under Applicable
                                                                                                 Anti-Predatory Lending Law
------------------------------------- ------------------------------------------------------ -----------------------------------

Georgia  (Oct.  1,  2002 -  Mar.  6,  Georgia  Fair Lending Act, Ga. Code Ann.ss.ss.7-6A-1 et  Covered Loan
2003)                                 seq.

                                      Effective October 1, 2002 - March 6, 2003
------------------------------------- ------------------------------------------------------ -----------------------------------

New Jersey                            New Jersey Home Ownership  Security Act of 2002, N.J.  Covered Home Loan
                                      Rev. Stat.ss.ss.46:10B-22 et seq.

                                      Effective November 27, 2003 - July 5, 2004
------------------------------------- ------------------------------------------------------ -----------------------------------

STANDARD & POOR'S HOME LOAN CATEGORIZATION

--------------------------------------------------------------------------------------------------------------------------------
         State/Jurisdiction             Name of Anti-Predatory Lending Law/Effective Date        Category under Applicable
                                                                                                 Anti-Predatory Lending Law
------------------------------------- ------------------------------------------------------ -----------------------------------

Georgia  (Oct.  1,  2002 -  Mar.  6,  Georgia  Fair Lending Act, Ga. Code Ann.ss.ss.7-6A-1 et  Home Loan
2003)                                 seq.

                                      Effective October 1, 2002 - March 6, 2003
------------------------------------- ------------------------------------------------------ -----------------------------------

New Jersey                            New Jersey Home Ownership  Security Act of 2002, N.J.  Home Loan
                                      Rev. Stat.ss.ss.46:10B-22 et seq.

                                      Effective  for loans closed on or after  November 27,
                                      2003
------------------------------------- ------------------------------------------------------ -----------------------------------

New Mexico                            Home  Loan   Protection   Act,  N.M.  Rev.  Stat.ss.ss.Home Loan
                                      58-21A-1 et seq.

                                      Effective  as  of  January  1,  2004;  Revised  as of
                                      February 26, 2004
------------------------------------- ------------------------------------------------------ -----------------------------------

North Carolina                        Restrictions   and  Limitations  on  High  Cost  Home  Consumer Home Loan
                                      Loans, N.C. Gen. Stat.ss.ss.24-1.1E et seq.

                                      Effective  July 1,  2000;  amended  October  1,  2003
                                      (adding open-end lines of credit)
------------------------------------- ------------------------------------------------------ -----------------------------------

South Carolina                        South  Carolina  High Cost and  Consumer  Home  Loans  Consumer Home Loan
                                      Act, S.C. Code Ann.ss.ss.37-23-10 et seq.

                                      Effective for loans taken on or after January 1, 2004
------------------------------------- ------------------------------------------------------ -----------------------------------