Document:

<PAGE>   1
                                                                    EXHIBIT 10.2

             AMENDED SCHEDULE OF MORTGAGES AND SECURITY AGREEMENTS,
           SECURED PROMISSORY NOTES, AND GUARANTIES ("LOAN DOCUMENTS")
       WHICH ARE SUBSTANTIALLY IN THE FORM OF KEY CORPORATE CAPITAL, INC.
      LOAN DOCUMENTS ATTACHED AS EXHIBITS 10.116, 10.117 AND 10.118 TO THE
              REGISTRANT'S FORM 10-K FOR THE PERIOD ENDING 12/31/99

<TABLE>
<CAPTION>

                                                                                                                          DATE OF
       MORTGAGOR                                  FACILITY NAME                      LOCATION           MORTGAGE AMOUNT   MORTGAGE
       ---------                                  -------------                      --------           ---------------   --------

<S>                                    <C>                                   <C>                        <C>              <C>

Ithaca Bundy Road, LLC                  Alterra Clare Bridge Cottage of       101 Bundy Road               $3,325,800     3/17/99
                                        Ithaca                                Ithaca, NY  14850-9252

Ithaca Trumansburg Road, LLC            Alterra Sterling House of Ithaca      103 Bundy Road               $2,862,608     3/17/99
                                                                              Ithaca, NY  14850-9252

Niagara Nash Road, LLC                  Alterra Sterling House of Niagara     6751 Nash Road               $3,420,000    10/20/99
                                                                              North Tonawanda, NY 14120

Niagara SC Wheatfield, LLC              Alterra Clare Bridge Cottage of       6741 Nash Road               $3,367,010    10/20/99
                                        Niagara                               North Tonawanda, NY 14120

Clinton Brookside Drive, LLC            Alterra Clare Bridge Cottage of       115 Brookside Drive          $3,300,000     1/14/00
                                        Clinton                               Clinton, NY  13323

Glastonbury Fairway Crossing, LLC       Alterra Clare Bridge of Glastonbury   1824 Manchester Road         $5,447,129     4/21/00
                                                                              Glastonbury, CT

Rockland Veterans Memorial Drive, LLC   Clare Bridge of Rockland County       582 Veterans Memorial Dr     $6,335,739     6/15/00
                                                                              Orangetown, NY
</TABLE><PAGE>   1
                                                                    EXHIBIT 10.3

                    SECOND AMENDMENT TO AMENDED AND RESTATED
                        FINANCING AND SECURITY AGREEMENT

         THIS SECOND AMENDMENT TO AMENDED AND RESTATED FINANCING AND SECURITY
AGREEMENT (herein called this "Amendment") made as of May 10, 2000, by and among
ALS Holdings, Inc., a Delaware corporation ("Holdings"), ALS Wisconsin Holdings,
Inc., a Delaware corporation ("Wisconsin Holdings"), and Bank United,
individually and as agent for itself and certain other lenders ("Agent").

                              W I T N E S S E T H:

         WHEREAS, Holdings, Wisconsin Holdings and Agent entered into that
certain Amended and Restated Financing and Security Agreement dated as of
February 12, 1999, as amended by that certain First Amendment to Amended and
Restated Financing and Security Agreement dated as of October 29, 1999, and that
certain Suspension, Waiver and Modification Agreement dated as of March 28, 2000
(as amended, supplemented, or restated to the date hereof, the "Original
Agreement"), for the purpose and consideration therein expressed, whereby
Lenders (as defined in the Original Agreement) became obligated to make loans to
Borrower (as defined in the Original Agreement) as therein provided; and

         WHEREAS, Holdings, Wisconsin Holdings and Agent desire to amend the
Original Agreement for the purposes expressed herein.

         NOW, THEREFORE, in consideration of the premises and the mutual
covenants and agreements contained herein and in the Original Agreement, for
good and valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, the parties hereto do hereby agree as follows:

                                   ARTICLE I.

                           Definitions and References

         Section 1.1. Terms Defined in the Original Agreement. Unless the
context otherwise requires or unless otherwise expressly defined herein, the
terms defined in the Original Agreement shall have the same meanings whenever
used in this Amendment.

         Section 1.2. Other Defined Terms. Unless the context otherwise
requires, the following terms when used in this Amendment shall have the
meanings assigned to them in this Section 1.2.

                  "Amendment" means this Second Amendment to Amended and
         Restated Financing and Security Agreement.

                  "Agreement" means the Original Agreement as amended hereby.

<PAGE>   2

                                   ARTICLE II.

                    Amendments to Original Agreement and Note

         Section 2.1. Amended Definitions. The following definitions in Section
1.1 of the Original Agreement are hereby amended in their entirety to read as
follows:

                  "Borrowing Base" means at any time an amount equal to the
         lesser of (a) the aggregate dollar amounts of the Deed of Trust Lien
         Amounts for each of the Eligible Projects, or (b) the aggregate dollar
         amount equal to the sum of (1) 80% of the costs incurred on the
         Facilities other than the Tequesta Facilities plus (2) amounts advanced
         with respect to the Tequesta Facilities and outstanding as of May 10,
         2000.

                  "Credit Facility" means a loan in the amount of the principal
         sum at anyone time outstanding up to the Credit Facility Committed
         Amount.

                  "Credit Facility Committed Amount" means $80,000,000.

         Section 2.2 New Definitions. The following definitions are hereby added
to Section 1.1 of the Original Agreement:

                  "Alterra" means Alterra Healthcare Corporation, a Delaware
         corporation. Any reference in this Agreement to "ALS" shall mean
         "Alterra."

                  "Construction Facilities" mean:

                  Name of Facility                   Location
         Wynwood of Brush Creek               Brush Creek, California
         Clare Bridge of Southern Pines       Southern Pines, North Carolina
         Clarebridge of Florence I            Florence, South Carolina

                  "Equity Transaction" means a transaction in which Alterra
         receives additional equity (including equity equivalent securities) in
         a total committed amount of at least $135,000,000, upon terms and
         conditions reasonably satisfactory to Agent.

                  "Interest Rate Conversion Date" means the date upon which
         Agent receives evidence in form and substance satisfactory to Agent (i)
         of the closing of the Equity Transaction (without material
         contingencies or post closing items); (ii) that Borrower has resumed
         Normal Construction Activity on the Construction Facilities and the
         Tequesta Facilities; and (iii) that Borrower has cured all Events of
         Default and those events which would constitute an Event of Default but
         for notice and the expiration of relevant cure periods, unless the same
         have been expressly waived in writing by Agent.

                  "Normal Construction Activity" means Borrower's good faith and
         diligent recommencement and continuing prosecution of construction
         activities as necessary to complete the lien-free construction of the
         improvements on the Construction Facilities and the Tequesta
         Facilities, as applicable, pursuant to the Financing Documents.

                                       2

<PAGE>   3

                  "Refinancing" means the refinancing of a Facility with the
         consent of Agent which will yield Refinancing Proceeds in an amount
         greater than the amount of the Credit Facility advanced on such
         Facilities.

                  "Refinancing Proceeds" means the gross proceeds less bone-fide
         expenses paid to unaffiliated third parties as a result of a
         Refinancing.

                  "Tequesta Facilities" means the Clare Bridge of Tequesta and
         the Crossings of Tequesta, both located in Tequesta, Florida.

                  "Title Company" means Chicago Title Insurance Company.

         Section 2.3 The Loan. Subsection 2.1(a) of the Original Agreement is
replaced in its entirety by the following:

                  (a) The Lenders agree to lend to Borrower pursuant to the
         terms and conditions of this Agreement and Borrower agrees to borrow
         from the Lenders from time to time the principal amount (the "Loan")
         not to exceed at any time outstanding the lesser of (i) the Credit
         Facility Committed Amount, or (ii) the Borrowing Base. Amounts drawn
         hereunder once repaid may not be reborrowed except as expressly
         provided herein.

         Section 2.4 Prepayment.

                  (a) The unlabeled paragraph in Section 4.13 of the Original
         Agreement is hereby labeled with the designation "(a)" The phrase "Sums
         borrowed and repaid may be readvanced" in Section 4.13 of the Original
         Agreement is hereby deleted.

                  (b) The following Subsection (b) is hereby added following
         Subsection 4.13(a) of the Original Agreement:

                           (b) In the event of a Refinancing, Borrower shall
                  deliver, or cause to be delivered, to Agent the Refinancing
                  Proceeds. Following such delivery, provided Alterra has not
                  closed the Equity Transaction, Borrower may reborrow a portion
                  of the Loan in an amount equal to fund 80% of the costs of
                  Normal Construction Activities on the Construction Facilities,
                  which amount shall not exceed the total amount of the
                  Refinancing Proceeds, for the sole purpose of funding Normal
                  Construction Activity on the Construction Facilities. At no
                  time shall the sum of (i) the amount of proceeds of the Loan
                  advanced to Borrower less the Refinancing Proceeds, plus (ii)
                  the amount of Refinancing Proceeds advanced to Borrower,
                  exceed the Credit Facility Committed Amount. All advances of
                  the Refinancing Proceeds shall be subject to the terms and
                  conditions of the Financing Documents regarding the advance of
                  Loan proceeds thereunder. All other amounts drawn hereunder
                  once repaid may not otherwise be reborrowed.

                  Section 2.5 Financial Statements. Subsection 7.1(f) of the
         Original Agreement is hereby replaced in its entirety with the
         following

                                       3
<PAGE>   4

                  (f) as soon as available but in no event more than forty-five
         (45) days after the close of each of the Borrower's fiscal quarters
         (except the last fiscal quarter of the fiscal year) internally
         prepared, consolidated anal consolidating financial statements of the
         Borrower, a balance sheet on a year-to-date basis and as of the close
         of such period and an income and expense statement for such period,
         certified by a responsible officer of the Borrowers; and

         Section 2.6 Construction of Tequesta Facilities. The following Section
7.32 is hereby added to the Original Agreement.

                  Section 7.32 Construction of Tequesta Facilities.

                  Immediately upon closing of the Equity Transaction, Borrower
         shall resume Normal Construction Activity on the Construction
         Facilities and the Tequesta Facilities, to the extent Borrower has not
         already done; so Borrower shall not be entitled to additional advances
         of the Loan (in the form of Refinancing Proceeds or otherwise) to fund
         such Normal Construction Activity.

         Section 2.7 New Facilities. The following Section 7.33 is hereby added
to the Original Agreement.

                  Section 7.33 New Facilities.

                  Notwithstanding anything to the contrary contained within the
         Financing Documents, Borrower shall not have the right to add
         additional Facilities to the Borrowing Base.

         Section 2.8 Interest. Paragraph 1 of each Note is replaced in its
entirety with the following:

                            1. Interest.

                           Interest on portions of the outstanding Principal Sum
                  shall accrue and be payable for periods commencing on the
                  first day and ending on the last day of a calendar month (each
                  a "Eurodollar Period") at a fixed rate equal to the sum of the
                  Eurodollar Rate (as defined in the Financing Agreement), which
                  rate shall be adjusted for any Federal Reserve Board reserve
                  requirements imposed upon the Lender from time to time, plus
                  (a) two hundred (200) basis points per annum for each
                  Eurodollar Period commencing on or after the date hereof
                  through and including March 31, 2000, (b) three hundred fifty
                  (350) basis points per annum for each Eurodollar Period
                  commencing on or after April 1, 2000 through and including the
                  Interest Rate Conversion Date (as defined in the Financing
                  Agreement), and (c) two hundred (200) basis points per annum
                  for each Eurodollar Period commencing on or after the first
                  day following the Interest Rate Conversion Date through and
                  including the Maturity Date, as such date may be extended as
                  provided herein. Interest shall be computed for the actual
                  number of days which have elapsed from the date of each
                  advance of a portion of the Principal Sum calculated on the
                  basis of a 360-day year. No more than five (5)

                                       4
<PAGE>   5

                  Eurodollar Periods may be in effect at any one time. The
                  Eurodollar Rate determined pursuant hereto shall be in
                  effect to the end of the applicable Eurodollar Period.

                                  ARTICLE III.

                         Representations and Warranties

         Section 3.1. Representations and Warranties of the Borrower. In order
to induce Agent to enter into this Amendment, the Borrower represents and
warrants to Agent and each Lender that:

         (a) Except with respect to (i) any mechanics, materialmen's and other
similar liens, filed or inchoate, that may have attached to the Construction
Projects or the Tequesta Projects as a result of construction activities, (ii)
the matters described in Alterra's annual report on form 10K filed with the
Securities and Exchange Commission on March 30, 2000, (iii) the change of
Borrower's principal place of business to 10000 Innovation Drive, Milwaukee,
Wisconsin 53226, and (iv) the construction slowdown or work stoppage on the
Construction Projects and the Tequesta Projects and the resulting increase in
costs and deterioration of condition of such projects as partially constructed,
the representations and warranties contained in Article V of the Original
Agreement are true and correct at and as of the time of the effectiveness
hereof.

         (b) The Borrower is duly authorized to execute and deliver this
Amendment and is and will continue to be duly authorized to perform its
obligations under the Agreement. The Borrower has duly taken all corporate
action necessary to authorize the execution and delivery of this Amendment and
to authorize the performance of the obligations of the Borrower hereunder.

         (c) The execution and delivery by the Borrower of this Amendment, the
performance by the Borrower of its obligations hereunder and the consummation of
the transactions contemplated hereby do not and will not conflict with any
provision of law, statute, rule or regulation or of the articles of
incorporation and bylaws of the Borrower, or of any material agreement,
judgment, license, order or permit applicable to or binding upon the Borrower,
or result in the creation of any lien, charge or encumbrance upon any assets or
properties of the Borrower. Except for those which have been obtained, no
consent, approval, authorization or order of any court or governmental authority
or third party is required in connection with the execution and delivery by the
Borrower of this Amendment or to consummate the transactions contemplated
hereby.

         (d) When duly executed and delivered, each of this Amendment and the
Agreement will be a legal and binding obligation of the Borrower, enforceable in
accordance with its terms, except as limited by bankruptcy, insolvency or
similar laws of general application relating to the enforcement of creditors'
rights and by equitable principles of general application.

         (e) The audited annual consolidated financial statements of the
Borrower and Alterra dated as of December 31, 1999 fairly present the
consolidated financial position at such date and the consolidated statement of
operations and the changes in consolidated financial position for the period
ending on such date for the Borrower and Alterra. Copies of such financial
statements have heretofore been delivered to each Lender. Since such date,
except as disclosed to Agent in

                                       5

<PAGE>   6

writing, and except for matters referenced in subsection 3(a) above, no material
adverse change has occurred in the financial condition or businesses or in the
consolidated financial condition or businesses of the Borrower or Alterra.

                                   ARTICLE IV.

                                   Agreements

         Section 4.1 Normal Construction Activity Prior to Closing of the Equity
Transaction. The parties agree that the sum of $3,822,014 (the "Unadvanced
Credit Facility") is the only remaining amount available under the Credit
Facility (other than any Refinancing Proceeds that may become available as
hereinabove provided). The Modification Equity Account (hereinafter defined)
shall serve as additional collateral for the Obligations. Utilizing the
procedures for advances contained in the Financing Documents, the Unadvanced
Credit Facility and the Modification Equity Account shall be disbursed by Agent
on a prorata basis (80% - Unadvanced Credit Facility and 20% Modification Equity
Account) to fund Normal Construction Activity on certain Construction Facilities
in amounts agreed upon by Borrower and Agent. Notwithstanding anything to the
contrary contained within the Loan Documents, the funding of Normal Construction
Activity may, at Agent's option, be funded to the Title Company to facilitate
timely issuance of the Down Date Endorsements (hereinafter defined).

         Section 4.2 Normal Construction Activity After Closing of the Equity
Transaction. In the event the Equity Transaction is closed, Borrower shall
deposit into an interest-bearing account held by Agent (the "Completion
Account") 20% of the amount of the aggregate cost, as determined by Agent, to
complete lien-free construction of the improvements on the Construction
Facilities in accordance with the Financing Documents in excess of the amount of
the Modification Equity Account as of the closing of the Equity Transaction and
deliver an assignment of such account in the form attached hereto as Exhibit A.
The Completion Account shall serve as additional collateral for the Obligations.
Utilizing the procedures for advances contained in the Financing Documents, the
Completion Account: shall be disbursed by Agent on a prorata basis (20% from the
Completion Account and 80% from Alterra's funds) with Alterra's disbursement of
to fund Normal Construction Activity on the Construction Facilities.

         Section 4.3 Closing of The Equity Transaction. In the event (i) Alterra
has not entered into a definitive agreement for the closing of the Equity
Transaction by April 30, 2000, or (ii) the Equity Transaction (without material
contingencies or post closing items) fails to close on or before June 30, 2000,
such event shall constitute an immediate 1? vent of Default notwithstanding any
notice or cure periods contained within the Financing Documents.

         Section 4.4 Refinance. Borrower and Alterra shall use their
commercially reasonable efforts to Refinance the completed Facilities
aggregating not less than $5,000,000 of Refinancing Proceeds and close the
Equity Transaction at their commercially reasonable earliest opportunity.

         Section 4.5 Completion of Construction. Borrower shall complete
construction of the following Facilities in accordance with the Financing
Documents on or before the following dates:

                                       6

<PAGE>   7

         (a) Construction Facilities: October 31, 2000.

         (b) Tequesta Facilities: March 31, 2001.

         Section 4.6 Agreement Regarding Lien Amount. Notwithstanding anything
to the contrary set forth within the Financing Documents, the designation of a
"Deed of Trust Lien Amount", "Mortgage Lien Amount" or "Lien Amount" therein is
solely for use in calculating the Borrowing Base and shall not prohibit, limit,
or restrict (a) Agent's lien against each Facility pursuant to the Financing
Documents; or (b) any of Agent's remedies provided in a Financing Document.

         Section 4.7 Indemnity/Release Provisions. NOTWITHSTANDING ANYTHING TO
THE CONTRARY CONTAINED WITHIN THE FINANCING DOCUMENTS, IT IS THE INTENTION OF
THE BORROWER AND BORROWER AGREES THAT ANY AND ALL RELEASES AND INDEMNITIES MADE
BY THE BORROWER UNDER THE FINANCING DOCUMENTS SHALL APPLY TO EACH
RELEASED/INDEMNIFIED PARTY THEREUNDER WITH RESPECT TO MATTERS, CLAIMS, DEMANDS,
LIABILITIES, LOSSES, DAMAGES, CAUSES OF ACTION, JUDGMENTS, PENALTIES, COSTS AND
EXPENSES (INCLUDING WITHOUT LIMITATION, REASONABLE ATTORNEY'S FEES) WHICH IN
WHOLE OR IN PART ARE CAUSED BY OR ARISE OUT OF THE NEGLIGENCE OF SUCH (AND/OR
ANY OTHER) RELEASED/INDEMNIFIED PARTY OR ANY STRICT LIABILITY. HOWEVER, SUCH
RELEASE AND/OR INDEMNITY SHALL NOT APPLY TO ANY RELEASED/INDEMNIFIED PARTY TO
THE EXTENT THE SUBJECT OF THE RELEASE/INDEMNITY IS CAUSED BY OR ARISES OUT OF
THE GROSS NEGLIGENCE OR WILLFUL MISCONDUCT OF SUCH RELEASED/INDEMNIFIED PARTY.

         Section 4.8 Defaults.

                  (a) Borrower acknowledges that Agent in the past may have
         accepted, without exercising the remedies to which Agent was entitled,
         payments and performance by Borrower that constituted defaults under
         the Financing Documents. Borrower acknowledges that no such acceptance
         or grace granted by Agent in the past, or Agent's agreement to the
         modifications evidenced hereby, has in any manner diminished Agent's
         right in the future to insist that Borrower strictly comply with the
         terms of the Financing Documents, as modified by the terms hereof.
         Furthermore, Borrower specifically acknowledges that any future grace
         or forgiveness of default by Agent shall not constitute a waiver or
         diminishment of any right of Agent with respect to any future default
         of Borrower, whether or not similar to any default with respect to
         which Agent has in the past chosen, or may in the future choose, not to
         exercise all of the rights and remedies granted to it under the
         Financing Documents.

                  (b) Borrower acknowledges that the execution of this Amendment
         by Agent is not intended nor shall it be construed as (i) an actual or
         implied waiver of any subsequent default under the Financing Documents,
         or (ii) an actual or implied waiver of any condition or obligation
         imposed upon Borrower pursuant to the Financing Documents,

                                       7

<PAGE>   8

         except to the extent expressly set forth herein. Agent acknowledges
         that upon execution of this Amendment, Borrower is no longer in
         default under the Financing Documents.

         Section 4.9 Release. Borrower and Alterra hereby release, remise,
acquit and forever discharge Agent and the Lenders, together with their
employees, agents, representatives, consultants, attorneys, fiduciaries,
servants, officers, directors, partners, predecessors, successors and assigns,
subsidiary corporations, parent corporations, and related corporate divisions
(all of the foregoing hereinafter called the "Released Parties"), from any and
all actions and causes of action, judgments, executions, suits, debts, claims,
demands, liabilities, obligations, damages and expenses of any and every
character, known or unknown, direct and/or indirect, at law or in equity, of
whatsoever kind or nature, whether heretofore or hereafter accruing, for or
because of any matter or things done, omitted or suffered to be done by any of
the Released Parties prior to and including the date hereof, and in any way
directly or indirectly arising out of or in any way connected to the Financing
Documents, or any of the transactions associated therewith, including
specifically but not limited to claims of usury.

         Section 4.10 Down Date Endorsements. Within fifteen (15) days from the
date hereof, and within fifteen (15) days of any further advances of the Loan,
Alterra shall cause the Title Company to issue to Agent Down Date Endorsements
(herein so called) to Agent's existing loan policies for each Construction
Facility without exception to mechanics' or materialman's liens, and otherwise
in form and content acceptable to Agent.

                                   ARTICLE V.

                           Conditions of Effectiveness

         Section 5.1 Effective Date. This Amendment shall become effective when,
and only when, the following conditions have been satisfied:

         (a) Agent shall have received, at Agent's office, a counterpart of this
Amendment executed and delivered by Borrower and Alterra.

         (b) Agent shall have received, at Agent's office, an opinion of counsel
to Borrower and Alterra in form and content acceptable to Agent stating that
this Amendment and the Third Amendment to Guaranty of Payment Agreement dated of
even date herewith are valid and binding upon Borrower and Alterra and
enforceable in accordance with their terms.

         (c) Agent shall have received, at Agent's office, a copy of a
standstill agreement between Borrower and the general contractors for the
Tequesta Facilities, whereby such general contractors agree to forbear and not
enforce any rights or remedies such parties may have pursuant to mechanics' lien
laws, and otherwise in form and content acceptable to Agent.

         (d) Intentionally Omitted.

         (e) Agent shall have received, at Agent's office, title reports
generated by the Title Company concerning the Construction Facilities.

                                       8

<PAGE>   9

         (f) Agent shall have received, at Agent's office, the sum of $150,000
as consideration for Agent's modification of the Credit Facility.

         (g) Borrower shall have deposited the sum of $955,508.50 into an
interest-bearing account held by Agent (the "Modification Equity Account") and
executed an assignment of such account in favor of Agent in the form attached
hereto as Exhibit A.

         (h) Borrower shall have paid, or cause to be paid, all costs and
expenses incident to the preparation hereof, the cost of defense of lawsuits
filed in connection with the nonpayment of construction costs, and the
consummation of the transactions specified herein, including without limitation
title insurance charges, recording fees and fees and expenses of legal counsel
and consultants to Agent and the Lenders.

                                   ARTICLE VI.

                                  Miscellaneous

         Section 6.1. Ratification of Agreements. The Original Agreement as
hereby amended is hereby ratified and confirmed in all respects. Any reference
to the Original Agreement in any Financing Document shall be deemed to be a
reference to the Original Agreement as hereby amended. The execution, delivery
and effectiveness of this Amendment shall not, except as expressly provided
herein, operate as a waiver of any right, power or remedy of Lenders or Agent
under the Original Agreement or any other Financing Document nor constitute a
waiver of any provision of the Original Agreement or any other Financing
Document.

         Section 6.2. Survival of Agreements. All representations, warranties,
covenants and agreements of the Borrower herein shall survive the execution and
delivery of this Amendment and the performance hereof, and shall further survive
until all of the Obligations are paid in full.

         Section 6.3. Financing Documents. This Amendment is a Financing
Document, and all provisions in the Agreement pertaining to Financing Documents
apply hereto.

         Section 6.4. Governing Law. This Amendment shall be governed by and
construed in accordance the laws of the State of Texas and any applicable laws
of the United States of America in all respects, including construction,
validity and performance.

         Section 6.5. Counterparts; Fax. This Amendment may be separately
executed in counterparts and by the different parties hereto in separate
counterparts, each of which when so executed shall be deemed to constitute one
and the same Amendment. This Amendment may be validly executed by facsimile or
other electronic transmission.

         Section 6.6 Notice and Agreement. Borrower, Alterra and Agent hereby
take notice of and agree to the following:

         A. PURSUANT TO SUBSECTION 26.02(b) OF THE TEXAS BUSINESS AND COMMERCE
CODE, A LOAN AGREEMENT IN WHICH THE AMOUNT INVOLVED THEREIN EXCEEDS $50,000 IN
VALUE IS NOT ENFORCEABLE UNLESS THE

                                       9

<PAGE>   10

AGREEMENT IS IN WRITING AND SIGNED BY THE PARTY TO BE BOUND OR BY THAT PARTY'S
AUTHORIZED REPRESENTATIVE.

         B. PURSUANT TO SUBSECTION 26.02(c) OF THE TEXAS BUSINESS AND COMMERCE
CODE, THE RIGHTS AND OBLIGATIONS OF THE PARTIES TO THE FINANCING DOCUMENTS SHALL
BE DETERMINED SOLELY FROM THE FINANCING DOCUMENTS, AND ANY PRIOR ORAL AGREEMENTS
BETWEEN THE PARTIES ARE SUPERSEDED BY AND MERGED INTO THE LOAN DOCUMENTS.

         C. THE FINANCING DOCUMENTS REPRESENT THE FINAL AGREEMENT BETWEEN THE
PARTIES THERETO AND MAY NOT BE CONTRADICTED BY EVIDENCE OF PRIOR,
CONTEMPORANEOUS OR SUBSEQUENT ORAL AGREEMENTS OF THE PARTIES THERETO. THERE ARE
NO UNWRITTEN ORAL AGREEMENTS BETWEEN THE PARTIES.

         [THE REMAINDER OF THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK.]

                                       10

<PAGE>   11

         IN WITNESS WHEREOF, this Amendment is executed as of the date first
above written.

                                     ALS HOLDINGS, INC.

                                     By:  /s/ Mark W. Ohlendorf
                                          --------------------------------------
                                          Name:  Mark W. Ohlendorf
                                               ---------------------------------
                                          Title: Vice President
                                                --------------------------------

                                     ALS WISCONSIN HOLDINGS, INC.

                                     By:  /s/ Mark W. Ohlendorf
                                          --------------------------------------
                                          Name:  Mark W. Ohlendorf
                                               ---------------------------------
                                          Title: Vice President
                                                --------------------------------

                                     BANK UNITED, AS AGENT

                                     By:  /s/ Casey Moore
                                          --------------------------------------
                                          Name:  Casey Moore
                                               ---------------------------------
                                          Title: Vice President
                                                --------------------------------

                                       11

<PAGE>   12

                        CONSENT AND AGREEMENT OF ALTERRA

         Alterra Healthcare Corporation, a Delaware corporation, for good and
valuable consideration the receipt of which is hereby acknowledged, joins in
this Amendment for the purpose of agreeing to Sections 4.9 and 6.6 hereof,
consents to the provisions of this Amendment and the transactions contemplated
herein, and ratifies and confirms the Guaranty of Payment Agreement, dated as of
September 12, 1998, as amended by that certain First Amendment to Guaranty of
Payment Agreement dated October 29, 1999 and that certain Suspension, Waiver and
Modification Agreement dated as of March 28, 2,000, made by it for the benefit
of Agent and the Lenders, and agrees that its obligations and covenants
thereunder are unimpaired hereby and shall remain in full force and effect.

                                     ALTERRA HEALTHCARE CORPORATION

                                     By:  /s/ Mark W. Ohlendorf
                                          --------------------------------------
                                          Name:  Mark W. Ohlendorf
                                               ---------------------------------
                                          Title: Senior Vice President
                                                --------------------------------

                                       12

<PAGE>   13

                          CONSENT OF FIRSTAR BANK, N.A.

         Firstar Bank, N.A., a Lender under the Agreement and a party to the
Agency Agreement, for good and valuable consideration the receipt of which is
hereby acknowledged, hereby consents to the provisions of this Amendment and the
transactions contemplated herein and agrees that its obligations under the
Agency Agreement are in full force and effect.

                                     FIRSTAR BANK, N.A.

                                     By:  /s/ Dale L. Welke
                                          --------------------------------------
                                          Name:  Dale L. Welke
                                               ---------------------------------
                                          Title: Vice President
                                                --------------------------------

                                       13

<PAGE>   14

                             CONSENT OF AMSOUTH BANK

         Amsouth Bank, a Lender under the Agreement and a party to the Agency
Agreement, for good and valuable consideration the receipt of which is hereby
acknowledged, hereby consents to the provisions of this Amendment and the
transactions contemplated herein and agrees that its obligations under the
Agency Agreement are in full force and effect.

                                     AMSOUTH BANK

                                     By:  /s/ Carl M. Ferris
                                          --------------------------------------
                                          Name:  Carl M. Ferris
                                               ---------------------------------
                                          Title: Vice President
                                                --------------------------------

                                       14

<PAGE>   15

                                                                       EXHIBIT A

                              ASSIGNMENT OF ACCOUNT

         The undersigned ("Assignor"), in consideration of certain financial
accommodations extended to Assignor under that certain Amended and Restated
Financing and Security Agreement dated as of February 12, 1999 (as amended,
supplemented, or restated, the "Credit Agreement"), does hereby assign and
transfer to by BANK UNITED, a federal savings bank, as agent for itself and
certain other lenders set forth in the Credit Agreement ("Agent"), all of
Assignor's right, title and interest in and to the accounts) identified as
follows:

<TABLE>
<CAPTION>
Name and Address of
Depository or                                              Identifying Number
Issuing Institution            Type of Account               of Account(s)
-------------------      -------------------------     ------------------------
<S>                      <C>                           <C>
Bank United
3200 Southwest Freeway
Suite 2000
Houston, Texas 77027

</TABLE>

and all instruments, documents, agreements and other writings evidencing such
account(s), all sums now or at any time hereafter on deposit therein, all sums
now due or to become due with respect to such accounts) and any and all
renewals, replacements and proceeds thereof (the "Account").

         Assignor represents, warrants and agrees that (i) Assignor has full
power, right and authority to execute and deliver this Assignment, (ii) Assignor
is the owner of the Account free and clear of all liens and encumbrances of any
nature whatsoever, (iii) Assignor will not withdraw any money from the Account
nor create any security interest or lien in or further assign the Account or any
part thereof, and (iv) any funds payable with respect to the Account that are
hereafter received by Assignor shall immediately upon such receipt become
subject to this Assignment, be segregated from all other funds of Assignor, be
held in trust by Assignor for Agent and be immediately paid into the Account.
Assignor further represents and warrants that, as of the date hereof, and after
giving effect to this Assignment and the completion of all other transactions
contemplated by Assignor at the time of the execution of this Assignment, (i)
Assignor is and will be solvent, (ii) the fair saleable value of Assignor's
assets exceeds and will continue to exceed Assignor's liabilities (both fixed
and contingent), (iii) Assignor is paying and will continue to be able to pay
its debts as they mature, and (iv) if Assignor is not an individual, Assignor
has and will have sufficient capital to carry on Assignor's businesses and all
businesses in which Assignor is about to engage.

         The Account shall constitute collateral for the Indebtedness. The term
"Indebtedness" shall mean (i) all Obligations (as such term is defined in the
Credit Agreement), and (ii) all costs and expenses incurred by Agent in
connection with the collection and administration of all or any part of the
Obligations described in (i) above or the protection or preservation of, or
realization upon, the collateral securing all or any part of such Obligations,
including without limitation all attorneys' fees.

                                       1

<PAGE>   16

         Upon default in the payment of the Indebtedness or any other default or
event of default under the Credit Agreement or the other instruments, documents
and agreements evidencing, securing, guaranteeing, governing and/or pertaining
to the Indebtedness ("Default"), Agent is hereby authorized without notice to
withdraw the funds represented by the Account and apply such funds to the
payment of the Indebtedness at such times and in such amounts as it shall in its
sole and absolute discretion determine. Assignor hereby irrevocably appoints
Agent its true and lawful attorney-in-fact, such power of attorney being coupled
with an interest, with full power of substitution, to do any one or more of the
following in its sole discretion upon the occurrence of a Default: (i) demand,
collect, receive, sue for, compound and give acquittance for any and all amounts
which may be or become due or payable with respect to the Account, (ii) execute
any and all withdrawal receipts or other orders for the payment of money drawn
on the Account, (iii) endorse the name of Assignor of all commercial paper given
in ;payment or in partial payment of the Account, (iv) file any claim or
institute any proceeding with respect to the Account, (v) transfer the Account
into the name of the Agent or its nominee, and (vi) take any other action which
Agent may deem necessary or appropriate to protect and preserve the right, title
and interest of Agent hereunder.

         THIS ASSIGNMENT SHALL BE COVERED BY AND CONSTRUED IN ACCORDANCE WITH
THE LAWS OF THE STATE OF TEXAS AND APPLICABLE FEDERAL LAWS.

         IN WITNESS WHEREOF, the undersigned executes and delivers this
Assignment as of
                ------------------, --------.

                                    ASSIGNOR:

                                       2

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