Document:

Exhibit 10.2

                       ASSIGNMENT AND ASSUMPTION AGREEMENT

         ASSIGNMENT AND  ASSUMPTION  AGREEMENT,  dated August 24, 2007,  between
Residential Funding Company, LLC, a Delaware corporation ("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 August 1, 2007 (the "Series  Supplement"),  to the Standard Terms of
Pooling and Servicing  Agreement,  dated as of July 1, 2007  (together  with the
Series Supplement, the "Pooling and Servicing Agreement"), pursuant to which the
Company  proposes to issue Mortgage  Pass-Through  Certificates,  Series 2007-S8
(the "Certificates")  consisting of classes designated as the Class I-A-1, Class
I-A-2, Class II-A-1, Class II-A-2, Class I-A-V, Class II-A-V, Class I-A-P, Class
II-A-P,  Class P,  Class  R-I and Class  R-II  Certificates  (collectively,  the
"Senior  Certificates"),  Class  M-1,  Class  M-2  and  Class  M-3  Certificates
(collectively,  the "Class M  Certificates")  and Class B-1, Class B-2 and Class
B-3  Certificates  (collectively,  the  "Class  B  Certificates"),  representing
beneficial ownership interests in a trust fund consisting primarily of a pool of
mortgage  loans,  which will be divided into two groups,  identified  in Exhibit
One-I and Exhibit One-II to the Series Supplement (the "Mortgage Loans").

         IV. In connection with the purchase of the Mortgage Loans,  the Company
will assign to RFC the Class  I-A-2,  Class  II-A-2,  Class I-A-P  Certificates,
Class II-A-P Certificates,  Class I-A-V Certificates, Class II-A-V Certificates,
Class P  Certificates,  Class M  Certificates,  Class  B  Certificates  and a de
minimis  portion  of  each  of  the  Class  R-I  and  Class  R-II   Certificates
(collectively, the "Retained 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.

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         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, and
with  respect to any Sharia  Mortgage  Loans,  all  amounts in respect of profit
payments and acquisition  payments,  received on or with respect to the Mortgage
Loans after August 1, 2007 (other than payments of principal  and interest,  and
with  respect to any Sharia  Mortgage  Loans,  all  amounts in respect of profit
payments and acquisition payments, due on the Mortgage Loans in August 2007). In
consideration  of such  assignment,  RFC or its  designee  will receive from the
Company in immediately  available funds an amount equal to  $32,071,383.34  plus
the  Retained  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.

         SECTION  3. 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,

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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 any 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 (ii) with respect to any
Sharia  Mortgage  Loan, the related  Sharia  Mortgage Loan Security  Instrument,
Sharia  Mortgage Loan  Co-Ownership  Agreement,  Obligation  to Pay,  Assignment
Agreement and Amendment of Security  Instrument,  any insurance policies and all
other  documents  in the related  Mortgage  File and (iii) with  respect to each
Mortgage Loan other than a Cooperative Loan or Sharia Mortgage 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

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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 4.  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 the  Retained  Certificates  as  part  of the  consideration
payable to RFC by the Company pursuant to this Agreement.

         SECTION 5. 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-I and Exhibit  One-II 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) To the  best of the  Company's  knowledge,  except  in the case of
approximately  0.2% of the Group I Loans, each Group I 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 Group I 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  Group II Loan with a  Loan-to-Value  Ratio at  origination  in
excess of 80% will be insured a primary mortgage insurance policy

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(a  "Primary  Insurance  Policy"),  covering  at least 25% of the balance of the
mortgage loan at  origination if the  Loan-to-Value  Ratio is between 95.00% and
90.01%,  at least 12% 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 6% 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 Group I Loan is 30 or more days  delinquent  in the  payment  of
principal  and  interest as of the Cut-off  Date and no Group I Loan has been so
Delinquent  more than once in the 12 month period prior to the Cut-off  Date. No
Group II Loan is  currently 30 or more days  delinquent  in payment of principal
and interest as of the Cut-off Date and no Group II 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

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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 all 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,    fixed   rate,
fully-amortizing,  (subject to interest only periods,  if applicable) first lien
mortgage  loans  having terms to maturity of not more than 30 years with respect
to the Group I Loans and 15 years with  respect to the Group II Loans,  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;

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         (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  Mortgage  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;

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         (xxvii) Except with respect to approximately 5.4% of the Group I Loans,
and  approximately  2.9% of the Group II  Loans,  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,  or the consumer in the case of any Sharia
Mortgage  Loans,  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)  No  Mortgage  Loan is a High  Cost  Loan or  Covered  Loan,  as
applicable (as such terms are defined in the 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 S&P'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;

                                     - 8 -
<PAGE>

         (xxxvi) 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);

         (xxxvii)   With  respect  to  any  Sharia   Mortgage   Loan,   mortgage
pass-through certificates or notes representing interests in mortgage loans that
are in all material  respects of the same type as the Mortgage Loans,  and which
are structured to be permissible under Islamic law utilizing a declining balance
co-ownership  structure,  have  been,  for a least  one  year  prior to the date
hereof,  (a) held by investors other than employee  benefit plans, and (b) rated
at least BBB- or Baa3, as applicable, by a Rating Agency; and

         (xxxviii) 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 6. 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

                                     - 9 -
<PAGE>

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 7. 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]

                                     - 10 -
<PAGE>

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

                                        RESIDENTIAL FUNDING COMPANY, LLC

                                        By:  /s/Marguerite Steffes
                                            ------------------------------------
                                        Name:   Marguerite Steffes
                                        Title:  Associate

                                        RESIDENTIAL FUNDING MORTGAGE
                                        SECURITIES I, INC.

                                        By:  /s/Heather Anderson
                                            ------------------------------------
                                        Name:   Heather Anderson
                                        Title:  Vice President

                                             ASSIGNMENT AND ASSUMPTION AGREEMENT
                                                            RFMSI SERIES 2007-S8

<PAGE>

                                   SCHEDULE A

                         Schedule of Mortgage Loans with
                            Defective Mortgage Files

<PAGE>

                                    EXHIBIT A
                                    ---------

                APPENDIX E OF THE STANDARD & POOR'S GLOSSARY FOR
                      FILE FORMAT FOR LEVELS(R) VERSION 6.0

APPENDIX  E - STANDARD & POOR'S PREDATORY LENDING CATEGORIES

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
-----------------------------------------------

<TABLE>
<CAPTION>
---------------------------------- ----------------------------------------------------- ----------------------------
       STATE/JURISDICTION                        NAME OF ANTI-PREDATORY LENDING            CATEGORY UNDER APPLICABLE
                                                       LAW/EFFECTIVE DATE                 ANTI-PREDATORY LENDING LAW
---------------------------------- ----------------------------------------------------- ----------------------------

---------------------------------- ----------------------------------------------------- ----------------------------
<S>                                <C>                                                   <C>
Arkansas                           Arkansas Home Loan Protection Act, Ark. Code          High Cost Home Loan
                                   Ann. ss.ss. 23-53-101 ET SEQ.

                                   Effective July 16, 2003
---------------------------------- ----------------------------------------------------- ----------------------------
Cleveland Heights, OH              Ordinance No. 72-2003 (PSH), Mun. Code ss.ss.         Covered Loan
                                   757.01 ET 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       High Cost Home Loan
                                   Act, Conn. Gen. Stat. ss.ss. 36a-746 ET SEQ.

                                   Effective October 1, 2001
---------------------------------- ----------------------------------------------------- ----------------------------
</TABLE>

<PAGE>

STANDARD & POOR'S HIGH COST LOAN CATEGORIZATION
-----------------------------------------------

<TABLE>
<CAPTION>
---------------------------------- ----------------------------------------------------- ----------------------------
       STATE/JURISDICTION                        NAME OF ANTI-PREDATORY LENDING            CATEGORY UNDER APPLICABLE
                                                       LAW/EFFECTIVE DATE                 ANTI-PREDATORY LENDING LAW
---------------------------------- ----------------------------------------------------- ----------------------------
<S>                                <C>                                                   <C>
District of Columbia               Home Loan Protection Act, D.C. Code ss.ss.            Covered Loan
                                   26-1151.01 ET SEQ.

                                   Effective for loans closed on or after January
                                   28, 2003
---------------------------------- ----------------------------------------------------- ----------------------------
Florida                            Fair Lending Act, Fla. Stat. Ann. ss.ss. 494.0078     High Cost Home Loan
                                   et SEQ.

                                   Effective October 2, 2002
---------------------------------- ----------------------------------------------------- ----------------------------
Georgia (Oct. 1, 2002 -            Georgia Fair Lending Act, Ga. Code Ann. ss.ss.        High Cost Home Loan
Mar. 6, 2003)                      7-6A-1 ET SEQ.

                                   Effective October 1, 2002 - March 6, 2003
---------------------------------- ----------------------------------------------------- ----------------------------
Georgia as amended                 Georgia Fair Lending Act, Ga. Code Ann. ss.ss.        High Cost Home Loan
(Mar. 7, 2003 - current)           7-6A-1 ET SEQ.

                                   Effective for loans closed on or after March 7,
                                   2003
---------------------------------- ----------------------------------------------------- ----------------------------
HOEPA Section 32                   Home Ownership and Equity Protection Act of           High Cost Loan
                                   1994, 15 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.        High Risk Home Loan
                                   815, 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                            Indiana Home Loan Practices Act, Ind. Code Ann.       High Cost Home Loans
                                   ss.ss. 16a-1-101 et seq.

                                   Effective January 1, 2005; amended by 2005 HB
                                   1179, effective July 1, 2005
---------------------------------- ----------------------------------------------------- ----------------------------
Kansas                             Consumer Credit Code, Kan. Stat. Ann. ss.ss.          High Loan to Value Consumer
                                   16a-1-101 ET SEQ.                                     Loan (ID. ss. 16a-3-207)
                                                                                         and;
---------------------------------- ----------------------------------------------------- ----------------------------
</TABLE>

                                      A-2
<PAGE>

STANDARD & POOR'S HIGH COST LOAN CATEGORIZATION
-----------------------------------------------

<TABLE>
<CAPTION>
---------------------------------- ----------------------------------------------------- ----------------------------
       STATE/JURISDICTION                        NAME OF ANTI-PREDATORY LENDING            CATEGORY UNDER APPLICABLE
                                                       LAW/EFFECTIVE DATE                 ANTI-PREDATORY LENDING LAW
---------------------------------- ----------------------------------------------------- ----------------------------
<S>                                <C>                                                   <C>
                                   Sections 16a-1-301 and 16a-3-207 became               High APR Consumer Loan (ID.
                                   effective April 14, 1999; Section 16a-3-308a          ss. 16a-3-308a)
                                   became effective July 1, 1999
---------------------------------- ----------------------------------------------------- ----------------------------
Kentucky                           2003 KY H.B. 287 - High Cost Home Loan Act, Ky.       High Cost Home Loan
                                   Rev. Stat. ss.ss. 360.100 ET SEQ.

                                   Effective June 24, 2003
---------------------------------- ----------------------------------------------------- ----------------------------
Maine                              Truth in Lending, Me. Rev. Stat. tit. 9-A, ss.ss.     High Rate High Fee Mortgage
                                   8-101 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       High Cost Home Loan
                                   SEQ. and 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.         Home Loan
                                   598D.010 ET SEQ.

                                   Effective October 1, 2003
---------------------------------- ----------------------------------------------------- ----------------------------
New Jersey                         New Jersey Home Ownership Security Act of 2002,       High Cost Home Loan
                                   N.J. 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
---------------------------------- ----------------------------------------------------- ----------------------------
</TABLE>

                                      A-3
<PAGE>

STANDARD & POOR'S HIGH COST LOAN CATEGORIZATION
-----------------------------------------------

<TABLE>
<CAPTION>
---------------------------------- ----------------------------------------------------- ----------------------------
       STATE/JURISDICTION                        NAME OF ANTI-PREDATORY LENDING            CATEGORY UNDER APPLICABLE
                                                       LAW/EFFECTIVE DATE                 ANTI-PREDATORY LENDING LAW
---------------------------------- ----------------------------------------------------- ----------------------------
<S>                                <C>                                                   <C>
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         Covered Loan
                                   Ohio 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.           High Cost Home Loan
                                   Gen. Laws ss.ss. 34-25.2-1 et seq.

                                   Effective December 31, 2006
---------------------------------- ----------------------------------------------------- ----------------------------
Oklahoma                           Consumer Credit Code (codified in various             Subsection 10 Mortgage
                                   sections of Title 14A)

                                   Effective July 1, 2000; amended effective
                                   January 1, 2004
---------------------------------- ----------------------------------------------------- ----------------------------
South Carolina                     South Carolina High Cost and Consumer Home            High Cost Home Loan
                                   Loans 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        High Cost Home Loan
                                   Ann. ss.ss. 45-20-101 et seq.

                                   Effective January 1, 2007
---------------------------------- ----------------------------------------------------- ----------------------------
West Virginia                      West Virginia Residential Mortgage Lender,            West Virginia Mortgage Loan
                                   Broker and Servicer Act, W. Va. Code Ann. ss.ss.      Act Loan
                                   31-17-1 ET SEQ.

                                   Effective June 5, 2002
---------------------------------- ----------------------------------------------------- ----------------------------
</TABLE>

                                      A-4PROMISSORY NOTE

$1,500,000.00                                              Date: August 31, 2007

FOR VALUE RECEIVED, Kirk Pharmaceuticals, LLC (the "COMPANY"), promises to pay
to the order of CB Distributors, Inc. ("CB") at the offices of the CB located at
2500 Kennedy Drive, Beloit, Wisconsin 53511 in lawful money of the United States
of America, and in immediately available funds, the principal sum of ONE MILLION
FIVE HUNDRED THOUSAND DOLLARS ($1,500,000.00) together with interest on the
principal balance from time to time outstanding hereunder (computed on the basis
of a 360-day year for the actual number of days elapsed) from the date hereof
until paid in full at a per annum rate equal to eight percent (8.0%) in simple
interest terms.

As partial consideration for the funds loaned to the Company, the Company
represents and warrants to CB that it will: (a) sell [*] of its [*] raw material
to CB pursuant to the purchase agreement attached hereto as EXHIBIT A and (b)
not increase the price of its [*] products manufactured, packaged and sold to CB
until after all of the Raw Material is exhausted.

In connection with the Company's commitment above to CB, CB covenants and agrees
to purchase from the Company a minimum of $500,000.00 per month of [*] products,
until this Note is repaid in full or the [*] raw material is exhausted.

The outstanding principal amount of and interest on this Note shall be due and
payable in full on November 30, 2007 (the "MATURITY DATE"). Should the
outstanding principal and interest on this Note not be paid in full by the
Company on the Maturity Date, in consideration for a thirty (30) day extension,
the Company will reserve for CB an additional [*] of its [*] supply ([*] total)
at no additional cost. Should the outstanding principal amount of and interest
on this Note not be paid on or before December 31, 2007, such failure shall only
then constitute an Event of Default.

Notwithstanding anything herein to the contrary, should the Company be unable,
for any reason, to manufacture, sell and deliver products containing [*] prior
to the Maturity Date, CB may send written notice to the Company demanding
payment of the outstanding principal amount of and interest on this Note within
fourteen (14) days of the date of the written notice. Should the Company fail to
pay the outstanding principal amount of and interest on this Note within
fourteen (14) days of the date of the written notice, such failure shall
constitute an Event of Default.

The Company may prepay this Note in whole or in part at any time without the
prior written consent of the CB. All payments under this Note shall be applied
first to sums due under this Note other than principal and interest, second to
accrued interest and lastly to the principal amount outstanding hereunder. No
partial prepayment shall postpone the due date or decrease the amount of any
subsequent payment of principal due under this Note.

In case an Event of Default shall occur, interest shall accrue on any amount
past due hereunder at a rate equal to eighteen percent (18.0%) per annum.

The Company shall pay all reasonable expenses incurred by the CB in the
collection of this Note, including, without limitation, the reasonable fees and
disbursements of counsel to the CB.

In no event shall the amount of interest due or payable under this Note exceed
the maximum rate of interest allowed by applicable law and, in the event any
such payment is inadvertently paid by the Company or inadvertently received by
the CB, then such excess sum shall be credited as a

                                       1

<PAGE>

payment of principal. It is the express intent of the parties hereto that the
Company not pay and the CB not receive, directly or indirectly, in any manner
whatsoever, interest in excess of that which may be lawfully paid by the Company
under applicable law.

The obligations of the Company to pay any amounts due under this Note are
absolute and unconditional.

No delay or failure on the part of the CB in the exercise of any right or remedy
shall operate as a waiver thereof, and no single or partial exercise by the CB
of any right or remedy shall preclude other or further exercise thereof or the
exercise of any other right or remedy.

Whenever possible, each provision of this Note shall be interpreted in such a
manner as to be effective and valid under applicable law, but if any provision
of this Note shall be prohibited by or invalid under applicable law, such
provisions shall be ineffective only to the extent of such prohibition or
invalidity, without invalidating the remainder of such provisions or the
remaining provisions of this Note.

THIS NOTE SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF
THE STATE OF ILLINOIS WITHOUT REGARD TO ANY CONFLICT OF LAWS RULES.

IN WITNESS WHEREOF, the Company has executed and delivered this Promissory Note
as of the date and year first written above.

                                         KIRK PHARMACEUTICALS, LLC

                                         BY:
                                         ---------------------------------------

                                         Name:  Ronald H. Lane
                                         Title: Chairman and CEO

Accepted and agreed this 31st day of August by CB Distributors, Inc.

By:
    ----------------------------------------
         Carlos Bengoa, President

                                       2

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