Document:

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Exhibit 10.3

Lease Agreement between Utah State Retirement Investment Fund and Humitech, Inc.

                             LEASE AGREEMENT BETWEEN

             UTAH STATE RETIREMENT INVESTMENT FUND, AS LANDLORD, AND

                 HUMITECH, INC., a Nevada corporation, AS TENANT
                 ------------------------------------

                                    SUITE 410

                              DATED APRIL 30, 2002

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                                TABLE OF CONTENTS

                                                                            Page
                                                                            ----

l.       DEFINITION...........................................................4

2.       PREMISES.............................................................4

3        TERM.................................................................4

4.       USE..................................................................4

5.       RENT.................................................................4
         5.1      Base Rent...................................................4
         5.2      Base Rent Adjustment........................................4
         5.3      Additional Rent.............................................4
         5.4      Parking Charge..............................................5
         5.5      Payment of Rent.............................................5
         5.6      Delinquent Payments and Handling Charge.....................5
         5.7      Prepaid Rent and Security Deposit...........................5

6.       CONSTRUCTION OF IMPROVEMENTS.........................................5
         6.1      General.....................................................5
         6.2      Access by Tenant Prior to Commencement of Term..............5
         6.3      Commencement Date; Adjustments to Commencement Date.........5

7.       SERVICES TO BE FURNISHED BY LANDLORD.................................6
         7.1      General.....................................................6
         7.2      Keys........................................................6
         7.3      Tenant Identity.............................................6
         7.4      Charges.....................................................6
         7.5      Operating Hours.............................................7

8.       REPAIR AND MAINTENANCE...............................................7
         8.1      By Landlord.................................................7
         8.2      By Tenant...................................................7

9.       TAXES ON TENANT'S PROPERTY...........................................7

10.      TRANSFER BY TENANT...................................................7
         10.1     General.....................................................7
         10.2     Conditions .................................................7
         10.3     Liens.......................................................8

11.      ALTERATIONS..........................................................8

12.      SPECIFICALLY PROHIBITED USES.........................................8

13.      ACCESS BY LANDLORD...................................................8

14.      CONDEMNATION.........................................................8

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15.      CASUALTY ............................................................9
         15.1     General.....................................................9
         15.2     Acts of Tenant..............................................9

16.      SUBORDINATION AND ATTORNMENT.........................................9
         16.1     General.....................................................9
         16.2     Attornment..................................................9

22.      RIGHT TO RELOCATE...................................................10

23.      QUIET ENJOYMENT.....................................................10

24.      DEFAULT BY TENANT...................................................10
         24.1     Events of Default..........................................10
         24.2     Remedies of Landlord.......................................11
         24.3     Payment by Tenant..........................................11
         24.4     Reletting..................................................11
         24.5     Landlord's Right to Pay or Perform.........................11
         24.6     No Waiver; No Implied Surrender............................11

25.      DEFAULTS BY LANDLORD................................................12

26.      RIGHT OF REENTRY....................................................12

27.      MISCELLANEOUS ......................................................12
         27.1     Independent Obligations; No Offset.........................12
         27.2     Time of Essence............................................12
         27.3     Applicable Law.............................................12
         27.4     Assignment by Landlord.....................................12
         27.5     Commencement Date and Estoppel Certificates ...............12
         27.6     Signs, Building Name and Building Address..................12
         27.7     Notices....................................................12
         27.8     Entire Agreement, Amendment and Binding Effect.............13
         27.9     Severability...............................................13
         27.10    Number and Gender, Captions and References.................13
         27.11    Attorneys' Fees ...........................................13
         27.12    Brokers ...................................................13
         27.13    Interest on Tenant's Obligations...........................13
         27.14    Authority .................................................13
         27.15    Recording .................................................13
         27.16    Exhibits...................................................13
         27.17    Multiple Counterparts .....................................14

         Signature Page......................................................14

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                                 LEASE AGREEMENT
                                 ---------------

         THIS LEASE AGREEMENT (this "LEASE") is entered as of April 30, 2002,
between UTAH STATE RETIREMENT INVESTMENT FUND ("LANDLORD") and HUMITECH, INC., A
NEVADA CORPORATION ("TENANT").

1. DEFINITIONS. The definitions of certain of the capitalized terms used in this
Lease are set forth in the Glossary of Defined Terms attached as Exhibit A.

2. PREMISES. Subject to the provisions of this Lease, Landlord hereby leases to
Tenant, and Tenant hereby leases from Landlord, approximately 2,994 rentable
square feet of space in the Building known as THE MADISON, which space is
outlined on the floor plan attached hereto as Exhibit B (the "PREMISES"). In
connection with such demise, Landlord hereby grants to Tenant the non-exclusive
right to use during the Term all Common Areas designed for the use of all
tenants in the Building, in common with all tenants in the Building and their
invitees, for the purposes for which designed and in accordance with all Legal
Requirements. By occupying the Premises, Tenant accepts the Premises as being
suitable for Tenant's intended use of the Premises.

3. TERM. The Term of this Lease shall commence on the Commencement Date (which
is scheduled to be May 1, 2002) and shall expire at 5:00 p.m. October 31, 2005
unless earlier terminated as provided herein (the "TERM").

4. USE. Tenant shall occupy and use the Premises solely for lawful, general
business office purposes in strict compliance with the Building Rules and
Regulations from time to time in effect and all other Legal Requirements.

5. RENT.

         5.1 BASE RENT. In consideration of Landlord's leasing the Premises to
Tenant, Tenant shall pay to Landlord as follows:

                                                            Monthly
                       Term                                 Amount
                       ----                                 ------
         May 1, 2002 - June 30, 2002                        Waived
       July 1, 2002 - October 31, 2002                      $3,742.50 / month
   November 1, 2002 - October 31, 2003                      $4,740.50 / month
   November 1, 2003 - October 31, 2004                      $5,114.75 / month
   November 1, 2004 - October 31, 2005                      $5,364.25 / month

The Base Rent set forth in this Section 5.1 is a negotiated figure and shall
govern whether or not the actual gross rentable square footage of the Premises
is the same as set forth in Section 2 hereof or changes pursuant to the
standards set in the definition of Net Rentable Area. Tenant shall have no right
to withhold, deduct or offset any amount of the monthly Base Rent or any other
sum due hereunder even if the actual gross rentable square footage of the
Premises is less than that set forth in Section 2 hereof or changes pursuant to
the standards set forth in the definition of Net Rentable Area.

         [5.2 Deleted]

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         5.3 ADDITIONAL RENT. For purposes of this Lease, Tenant's "ADDITIONAL
RENT" for any Fiscal Year (or portion thereof) shall mean the sum of (a)
Tenant's Prorata Share of Operating Expenses plus (b) Tenant's Prorata Share of
Impositions. For purposes of this Lease, Tenant's Prorata Share of Operating
Expenses shall mean and be equal to the product of (x) Net Rentable Area of the
Premises multiplied by (y) the difference, if positive, between (i) the amount
of Operating Expenses divided by the Net Rentable Area of the Building minus
(ii) the Expense Stop, all as applicable for the period in question. For
purposes of this Lease, Tenant's Prorata Share of Impositions shall mean and be
equal to the product of (x) Net Rentable Area of the Premises multiplied by (y)
the difference, if positive, between (i) the amount of Impositions divided by
the Net Rentable Area of the Building minus (ii) the Impositions Stop, all as
applicable for the period in question. By the Commencement Date, Landlord shall
estimate the Additional Rent to be due by Tenant for the balance of the Fiscal
Year in which the Commencement Date occurs. Thereafter, unless Landlord delivers
to Tenant a revision of the estimated Additional Rent, Tenant shall pay to
Landlord, coincident with Tenant's payment of Base Rent, an amount equal to the
estimated Additional Rent for the remainder of such year divided by the number
of months remaining in such year. From time to time during any Fiscal Year,
Landlord may estimate and re-estimate the Additional Rent to be due by Tenant
for that Fiscal Year and deliver a copy of the estimate or re-estimate to
Tenant. Thereafter, the monthly installments of Additional Rent payable by
Tenant shall be appropriately adjusted in accordance with the estimation so
that, by the end of the Fiscal Year, Tenant shall have paid all of the
Additional Rent as estimated by Landlord. After the conclusion of each Fiscal
Year during the Term, and after the termination or expiration of the Term,
Landlord shall deliver to Tenant a statement of actual Additional Rent due by
Tenant for the Fiscal Year (or, with respect to termination or expiration, the
portion of the Fiscal Year) just ended. Within 30 days thereafter, Tenant shall
pay to Landlord or Landlord shall credit against the next installment of
Additional Rent due by Tenant (or Landlord shall refund to Tenant, if the Term
has expired and all payments due by Tenant to Landlord have been paid in full)
the difference between the actual Additional Rent due for such year and the
estimated Additional Rent paid by Tenant during such year. Tenant may review, at
Tenant's expense and after giving 20-days' prior written notice to Landlord,
Landlord's records relating to Operating Expenses and Impositions for any
periods within two Fiscal Years prior to the review; provided, however, no
review shall extend to periods of time preceding the Commencement Date. In lieu
of allowing Tenant to review Landlord's records under this Section 5.3, Landlord
may deliver to Tenant a report of the Operating Expenses and Impositions
prepared by a certified public accountant, which report shall be conclusive for
purposes of this Lease.

         5.4 PARKING CHARGE. Tenant shall at all times during the Tern lease
from Landlord twelve (12) unassigned automobile parking spaces in the Parking
Facility at no extra charge. TENANT MAY ALSO LEASE FOUR (4) RESERVED PARKING
SPACES FOR A MONTHLY FEE OF $25.00 PER SPACE FOR MONTHS 1 - 12, $50.00 PER SPACE
FOR MONTHS 13 - 24 AND $75.00 PER SPACE FOR MONTHS 25 - 42.

         5.5 PAYMENT OF RENT. Except as otherwise expressly provided in this
Lease, all Rent shall be due in advance monthly installments on the first day of
each calendar month during the Tenn. Rent shall be paid to Landlord at its
address recited in Section 27.7 or to such other person or at such other address
as Landlord may from time to time designate in writing. Rent shall be paid
without notice, demand, abatement, deduction or offset in legal tender of the
United States of America. If the Term commences or ends on other than the first
or the last day of a calendar month, the Rent for the partial month shall be
prorated on the basis of the number of days during the month for which the Term
was in effect. If the Term commences or ends on other than the first or the last
day of a Fiscal Year, the Additional Rent for the partial Fiscal Year shall be
prorated on the basis of the number of days during the Fiscal Year for which the
Term was in effect.

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         5.6 DELINQUENT PAYMENTS AND HANDLING CHARGE. All Rent and other
payments required of Tenant hereunder shall bear interest from the date due
until the date paid at the rate of interest specified in Section 27.13.
Alternatively, Landlord may charge Tenant, as additional Rent hereunder, a fee
equal to five percent of the delinquent payment to reimburse Landlord for its
cost and inconvenience incurred as a consequence of Tenant's delinquency. In no
event, however, shall the charges permitted under this Section 5.6 or elsewhere
in this Lease, to the extent the same are considered to be interest under
applicable law, exceed the maximum rate of interest allowable under applicable
law.

         5.7 PREPAID RENT AND SECURITY DEPOSIT. Landlord hereby acknowledges
receipt of $5,114.75 representing (a) the Security Deposit as security for the
full and timely payment and performance by Tenant of its obligations under this
Lease. Landlord may apply any or all of the Security Deposit toward the payment
of any sum or the performance of any obligation which Tenant was obligated, but
failed, to pay or perform hereunder. The Security Deposit shall not be
considered an advance payment of Rent by Tenant or a measure of or a limit to
Landlord's damages upon an Event of Default. TENANT SHALL PAY TO LANDLORD A
DEPOSIT OF $20.00 FOR EACH ACCESS CARD REQUESTED TO GAIN ACCESS TO THE BUILDING.

6. CONSTRUCTION OF IMPROVEMENTS.

         6.1 GENERAL. Subject to events of Force Majeure, Landlord shall
install, furnish, perform and apply, at its expense, the Landlord's Work as
specified in the Work Letter. Performance of the Landlord's Work shall
constitute Landlord's sole construction obligation to Tenant under this Lease.

         6.2 ACCESS BY TENANT PRIOR TO COMMENCEMENT OF TERM. Provided that
Tenant obtains and delivers to Landlord the certificates or policies of
insurance called for in Section 17.1, Landlord, in its sole discretion, may
permit Tenant and its employees, agents, contractors and suppliers to enter the
Premises before the Commencement Date (and such entry, alone, shall not
constitute Tenant's taking possession of the Premises for the purpose of Section
6.3(c)) to prepare the Premises for Tenant's occupancy. Tenant and each other
person or firm who or which enters the Premises before the Commencement Date
shall conduct itself so as to not interfere with Landlord or other occupants of
the Building. Landlord may withdraw any permission granted under this Section
6.2 upon 24-hours' notice to Tenant if Landlord, in its sole discretion,
determines that any such interference has been or may be caused. Any prior entry
shall be under all of the terms of this Lease (other than the obligation to pay
Base Rent and Additional Rent) and at Tenant's sole risk. Landlord shall not be
liable in any way for personal injury, death or property damage (including
damage to any personal property which Tenant may bring into, or any work which
Tenant may perform in, the Premises) which may occur in or about the Complex by
Tenant or such other person or firm as a result of any prior entry.

         6.3 COMMENCEMENT DATE: ADJUSTMENTS TO COMMENCEMENT DATE. For purposes
of this Lease, the "COMMENCEMENT Date" shall mean the earliest of: (a) the date
on which Landlord substantially completes the Landlord's Work and tenders
possession of the Premises to Tenant; or (b) the date on which Landlord would
have substantially completed the Landlord's Work and tendered possession of the
Premises to Tenant but for (i) the delay or failure of Tenant to furnish
information or other matters required in the Work Letter, (ii) Tenant's request
for changes in the Plans or non-Building Standard Items or (iii) any other
action or inaction of Tenant, or any person or firm employed or retained by
Tenant or the date on which Tenant takes possession of the Premises. If by the
scheduled Commencement Date specified in Section 3 the Landlord's Work has not
been substantially completed, and such failure to substantially complete renders
the Premises untenable for their intended purpose, all as reasonably determined
by Landlord, or Landlord is unable to tender possession of the Premises to
Tenant, then the Commencement Date (and the commencement of payment of Base Rent
and Additional Rent) shall be postponed until the Landlord's Work is
substantially completed as reasonably determined by Landlord or until possession
of the Premises is tendered to Tenant, as the case may be. Such postponement
shall extend the scheduled expiration of the Term for a number of days equal to
the postponement. The postponement of the payment of Base Rent and Additional
Rent under this Section 6.3 shall be Tenant's exclusive remedy for Landlord's
delay in completing the Landlord's Work or tendering possession of the Premises
to Tenant.

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7. SERVICES TO BE FURNISHED BY LANDLORD.

         7.1 GENERAL. Subject to applicable Legal Requirements and Tenant's
performance of its obligations hereunder, Landlord shall use all reasonable
efforts to furnish the following services:

                  (a) Air-conditioning and heating to the Premises during
         Building Operating Hours, at such temperatures and in such amounts as
         are considered by Landlord to be suitable and standard (thus excluding
         air-conditioning or heating for electronic data processing or other
         specialized equipment);

                  (b) Hot and cold water at those points of supply common to all
         floors for lavatory and drinking purposes only;

                  (c) Janitor service and periodic window washing in and about
         the Building and the Premises;

                  (d) Elevator service, if necessary, to provide access to and
         egress from the Premises;

                  (e) Electric current during Building Operating Hours for
         normal office machines and other machines of low electrical consumption
         (which shall exclude electric current for electronic data processing
         equipment, lighting in excess of Building Standard or any other item of
         electrical equipment which singly consumes more than 0.5 kilowatts per
         hour at rated capacity or requires a voltage other than 120 volts
         single phase); and

                  (f) Replacement of fluorescent lamps in Building Standard
         light fixtures installed by Landlord and of incandescent bulbs or
         fluorescent lamps in all public restrooms, stairwells and other common
         areas in the Building.

If any of the services described above or elsewhere in this Lease are
interrupted, Landlord shall use reasonable diligence to promptly restore same.
However, neither the interruption or cessation of such services nor the failure
of Landlord to restore same shall render Landlord liable for damages to person
or property, or be construed as an eviction of Tenant, or work an abatement of
Rent or relieve Tenant from fulfilling any of its other obligations hereunder.

         7.2 KEYS. Landlord shall furnish Tenant, at Landlord's expense, with
(four 4) keys, and at Tenant's expense with such additional keys as Tenant may
request, to unlock each corridor door entering the Premises. Tenant shall not
install, or permit to be installed, any additional lock on any door into or in
the Premises or make, or permit to be made, any duplicates of keys to the
Premises. Landlord shall be entitled at all times to possession of a duplicate
of all keys to all doors to or inside of the Premises. All keys referred to in
this Section 7.2 shall remain the property of Landlord. Upon the expiration or
termination of the Term, Tenant shall surrender all such keys to Landlord and
shall deliver to Landlord the combination to all locks on all safes, cabinets
and vaults which will remain in the Premises. Landlord shall be entitled to
install, operate and maintain security systems in or about the Premises and the
Complex which monitor, by closed circuit television or otherwise, all persons
leaving or entering the Complex, the Building and the Premises.

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         7.3 TENANT IDENTITY. Landlord shall provide and install, in Building
Standard graphics, letters or numerals identifying Tenant's name and suite
number on entrance doors to the Premises. Without Landlord's prior written
consent, no other signs, numerals, letters, graphics, symbols or marks
identifying Tenant shall be placed on the exterior, or on the interior if they
are visible from the exterior, of the Premises. Landlord shall install up to one
(1) directory strip(s) for each 2,994 net rentable square feet in the Premises,
listing the names and suite numbers of Tenant on the Building directory board to
be placed in the main lobby of the Building.

         7.4 CHARGES. Tenant shall pay to Landlord, monthly as billed, as
additional Rent, such charges as may be separately metered or as Landlord may
compute for the following:

                  (a) any utility services utilized by Tenant for computers,
         data processing equipment or other electrical equipment in excess of
         that agreed to be furnished by Landlord pursuant to Section 7.1(e),

                  (b) lighting installed in the Premises in excess of Building
         Standard lighting, or provided at times other than Building Standard
         Hours;

                  (c) air-conditioning, heating and other services in excess of
         that stated in Section 7.1 (a) or provided at times other than Building
         Operating Hours; and

                  (d) janitorial services required with respect to Non-Building
         Standard Items within the Premises.

                  HVAC and lighting utilized at times other than Building
Standard Hours will be furnished only upon the request of Tenant, provided that
Tenant shall pay to the Landlord for the actual costs of such additional
services monthly, upon receipt of a bill therefor, the sum equal to the amount
charged to Landlord by the applicable utilities authority plus a $10.00 monthly
service charge for such metering recording device. Tenant acknowledges that such
service and temperature may be subject to change by local, county, state or
federal regulation. Whenever machines or equipment that generate abnormal heat
are used in the Leased Premises which affect the temperature otherwise
maintained by the air conditioning system, Landlord shall have the right to
install supplemental air conditioning in the Leased Premises, and the cost
thereof, including the cost of installation, operating, use and maintenance,
shall be paid by Tenant to Landlord as additional rental upon demand.

         With respect to any other Non-Building Standard services provided to
Tenants Landlord may elect to estimate the charges to be paid by Tenant under
this Section 7.4 and bill such charges to Tenant monthly in advance, in which
event Tenant shall promptly pay the estimated charges. When the actual charges
are determined by Landlord an appropriate cash adjustment shall be made between
Landlord and Tenant to account for any underpayment or overpayment by Tenant.

         7.5 OPERATING HOURS. Subject to Building Rules and Regulations and such
security standards as Landlord may from time to time adopt, the Building shall
be open to the public during the Building Operating Hours and the Premises shall
be open to Tenant during hours other than Building Operating Hours.

8. REPAIR AND MAINTENANCE.

         8.1 By Landlord. Landlord shall maintain the Building (excluding
leasehold improvements which become fixtures thereto) in a good and operable
condition, and shall make such repairs and replacements as may be required to
maintain the Building in such condition. This Section 8.1 shall not apply to
damage resulting from a Taking (as to which Section 14 shall apply), or damage
resulting from a casualty (as to which Section 15.1 shall apply) or to damage
for which Tenant is otherwise responsible under this Lease.

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         8.2 By Tenant. Tenant shall maintain the Premises in a clean, safe,
operable, attractive condition, and will not commit or allow to remain any waste
or damage to any portion of the Premises. Tenant shall repair or replace,
subject to Landlord's direction and supervision, any damage to the Complex
caused by Tenant or Tenant's agents, contractors or invitees. If Tenant fails to
make such repairs or replacements, Landlord may make same at Tenant's cost. Such
cost shall be payable to Landlord by Tenant on demand as additional Rent. All
contractors, workmen, artisans and other persons which or who Tenant proposes to
retain to perform work in the Premises (or the Complex, pursuant to the second
sentence of this Section 8.2) pursuant to this Section 8.2 or Section 11 shall
be approved by Landlord prior to the commencement of any such work.

9. TAXES ON TENANT'S PROPERTY. Tenant shall be liable for and shall pay, before
their becoming delinquent, all taxes and assessments levied against any personal
property placed by Tenant in the Premises (even if same becomes a fixture by
operation of law or the property of Landlord by operation of this Lease),
including any additional Impositions which may be assessed, levied, charged or
imposed against Landlord or the Building by reason of Non-Building Standard
Items in the Premises. Tenant may withhold payments of any taxes and assessments
described in this Section 9 so long as Tenant contests its obligation to pay in
accordance with applicable law and the non-payment thereof does not pose a
threat of loss or seizure of the Building or any interest of Landlord therein.

10. TRANSFER BY TENANT.

         10.1 GENERAL. Without the prior written consent of Landlord, Tenant
shall not effect or suffer any Transfer. Any attempted Transfer without such
consent shall be void. If Tenant desires to effect a Transfer, it shall deliver
to Landlord written notice thereof in advance of the date on which Tenant
proposes to make the Transfer, together with all of the terms of the proposed
Transfer and the identity of the proposed Transferee. Landlord shall have 30
days following receipt of the notice and information within which to notify
Tenant in writing whether Landlord elects (a) to refuse to consent to the
Transfer and to terminate this Lease as to the space proposed to be Transferred
as of the date so specified by Tenant, in which event Tenant will be relieved of
all further obligations hereunder as to such space, (b) to refuse to consent to
the Transfer and to continue this Lease in full force as to the entire Premises
or (c) to permit Tenant to effect the proposed Transfer. If Landlord fails to
notify Tenant of its election within said 30 day period, Landlord shall be
deemed to have elected option (b). The consent by Landlord to a particular
Transfer shall not be deemed a consent to any other Transfer. If a Transfer
occurs without the prior written consent of Landlord as provided herein,
Landlord may nevertheless collect rent from the Transferee and apply the net
amount collected to the Rent payable hereunder, but such collection and
application shall not constitute a waiver of the provisions hereof or a release
of Tenant from the further performance of its obligations hereunder.

         10.2 CONDITIONS. The following conditions shall automatically apply to
each Transfer, without the necessity of same being stated in or referred to in
Landlord's written consent:

                  (a) Tenant shall execute, have acknowledged and deliver to
         Landlord, and cause the Transferee to execute, have acknowledged and
         deliver to Landlord, an instrument in form and substance acceptable to
         Landlord in which (i) the Transferee adopts this Lease and agrees to
         perform, jointly and severally with Tenant, all of the obligations of
         Tenant hereunder, as to the space transferred to it, (ii) the
         Transferee grants Landlord an express first and prior security interest
         in its personal property brought into the transferred space to secure
         its obligations to Landlord hereunder, (iii) Tenant subordinates to

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         Landlord's statutory lien and security interest any liens, security
         interests or other rights which Tenant may claim with respect to any
         property of the Transferee, (iv) Tenant agrees with Landlord that, if
         the rent or other consideration due by the Transferee exceeds the Rent
         for the transferred space, then Tenant shall pay Landlord as additional
         Rent hereunder all such excess rent and other consideration immediately
         upon Tenant's receipt thereof, (v) Tenant and the Transferee agree to
         provide to Landlord, at their expense, direct access from a public
         corridor in the Building to the transferred space, (vi) the Transferee
         agrees to use and occupy the transferred space solely for the purpose
         specified in Section 4 and otherwise in strict accordance with this
         Lease and (vii) Tenant acknowledges that, notwithstanding the Transfer,
         Tenant remains directly and primarily liable for the performance of all
         the obligations of Tenant hereunder (including, without limitation, the
         obligation to pay all Rent), and Landlord shall be permitted to enforce
         this Lease against Tenant or the Transferee, or both, without prior
         demand upon or proceeding in any way against any other persons, and

                  (b) Tenant shall deliver to Landlord a counterpart of all
         instruments relative to the Transfer executed by all parties to such
         transaction (except Landlord).

         10.3 LIENS. Without in any way limiting the generality of the
foregoing, Tenant shall not grant, place or suffer, or permit to be granted,
placed or suffered, against the Complex or any portion thereof, any lien,
security interest, pledge, conditional sale contract, claim, charge or
encumbrance (whether constitutional, contractual or otherwise) and if any of the
aforesaid does arise or is asserted, Tenant will, promptly upon demand by
Landlord and at Tenant's expense, cause same to be released.

11. ALTERATIONS. Tenant shall not make, or permit to be made, any alteration,
improvement or addition to, or install, or permit to be installed, any fixture
or equipment (other than desk top electrical equipment) in, the Premises without
the prior written consent of Landlord. All such alterations, improvements and
additions (including all articles attached to the floor, wall or ceiling of the
Premises) shall become the property of Landlord and shall, at Landlord's
election, be (a) surrendered with the Premises as part thereof at the
termination or expiration of the Term, without any payment, reimbursement or
compensation therefor, or (b) removed by Tenant, at Tenant's expense, with all
damage caused by such removal repaired by Tenant. Tenant may remove Tenant's
trade fixtures, office supplies, movable office furniture and equipment not
attached to the Building provided such removal is made within five days after
the expiration of the Term, no uncured Event of Default has occurred and Tenant
promptly repairs all damage caused by such removal.

12. SPECIFICALLY PROHIBITED USES. Tenant will not (a) use, occupy or permit the
use or occupancy of the Premises for any purpose or in any manner which is or
may be, directly or indirectly, violative of any Legal Requirement, or dangerous
to life or property, or a public or private nuisance or disruptive or
obstructive of any other tenant of the Building, (b) keep, or permit to be kept,
any substance in or conduct, or permit to be conducted, any operation from the
Premises which might emit offensive odors or conditions into other portions of
the Building, or make undue noise or create undue vibrations, (c) commit or
permit to remain any waste to the Premises, (d) install or permit to remain any
improvements to the Premises (other than window coverings which have first been
approved by Landlord) which are visible from the outside of the Premises, or
exceed the structural loads of floors or walls of the Building, or adversely
affect the mechanical, plumbing or electrical systems of the Building or affect
the structural integrity of the Building in any way, (e) install any food, soft
drink or other vending machine (other than those for the exclusive,
non-commercial use of Tenant and its business invitees) in the Premises or (f)
commit, or permit to be committed, any action or circumstance in or about the
Building which, directly or indirectly, would or might justify any insurance
carrier in canceling or increasing the premium on the fire and extended coverage
insurance policy maintained by Landlord on the Building or contents, and if any
increase results from any act of Tenant, then Tenant shall pay such increase
promptly upon demand therefor by Landlord.

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13. ACCESS BY LANDLORD. Landlord, its employees, contractors, agents and
representatives, shall have the right (and Landlord, for itself and such persons
and firms, hereby reserves the right) to enter the Premises at all hours (a) to
inspect, clean, maintain, repair, replace or alter the Premises or the Building,
(b) to show the Premises to prospective purchasers (or, during the last 12
months of the Term, to prospective tenants), (c) to determine whether Tenant is
performing its obligations hereunder and, if it is not, to perform same at
Landlord's option and Tenant's expense or (d) for any other purpose deemed
reasonable by Landlord. In an emergency, Landlord (and such persons and firms)
may use any means to open any door into or in the Premises without any liability
therefor. Entry into the Premises by Landlord or any other person or firm named
in the first sentence of this Section 13 for any purpose permitted herein shall
not constitute a trespass or an eviction (constructive or otherwise), or entitle
Tenant to any abatement or reduction of Rent, or constitute grounds for any
claim (and Tenant hereby waives any claim) for damages for any injury to or
interference with Tenant's business, for loss of occupancy or quiet enjoyment or
for consequential damages.

14. CONDEMNATION. If all of the Complex is Taken, or if so much of the Complex
is Taken that, in Landlord's opinion, the remainder cannot be restored to an
economically viable, quality office building, or if the awards payable to
Landlord as a result of any Taking are, in Landlord's opinion, inadequate to
restore the remainder to an economically viable, quality office building,
Landlord may, at its election, exercisable by the giving of written notice to
Tenant within 60 days after the date of the Taking, terminate this Lease as of
the date of the Taking or the date Tenant is deprived of possession of the
Premises (whichever is later). If this Lease is not terminated as a result of a
Taking, Landlord shall restore the Premises remaining after the Taking to a
Building Standard condition. During the period of restoration, Base Rent shall
be abated to the extent the Premises are rendered untenantable and, after the
period of restoration, Base Rent and Tenant's Share shall be reduced in the
proportion that the area of the Premises Taken or otherwise rendered
untenantable bears to the area of the Premises just prior to the Taking. If any
portion of Base Rent is abated under this Section 14, Landlord may elect to
extend the expiration date of the Term for the period of the abatement. All
awards, proceeds, compensation or other payments from or with respect to any
Taking of the Complex or any portion thereof shall belong to Landlord, Tenant
hereby assigning to Landlord all of its right, title, interest and claim to
same. Tenant may assert a claim for and recover from the condemning authority,
but not from Landlord, such compensation as may be awarded on account of
Tenant's moving and relocation expenses, and depreciation to and loss of
Tenant's moveable personal property.

                   REMAINDER OF PAGE LEFT INTENTIONALLY BLANK.

<PAGE>

15. CASUALTY.

         15.1 GENERAL. Tenant shall give prompt written notice to Landlord of
any casualty to the Complex of which Tenant is aware and any casualty to the
Premises. If the Complex or the Premises are totally destroyed, or if the
Complex or the Premises are partially destroyed but in Landlord's opinion, they
cannot be restored to an economically viable, quality office building, or if the
insurance proceeds payable to Landlord as a result of any casualty are, in
Landlord's opinion, inadequate to restore the portion remaining to an
economically viable and quality office building, Landlord may, at its election
exercisable by the giving of written notice to Tenant within 60 days after the
casualty, terminate this Lease as of the date of the casualty or the date Tenant
is deprived of possession of the Premises (whichever is later). If this Lease is
not terminated as a result of a casualty, Landlord shall (subject to Section
15.2) restore the Premises to a Building Standard condition. During the period
of restoration, Base Rent shall be abated to the extent the Premises are
rendered untenantable and, after the period of restoration, Base Rent and
Tenant's Share shall be reduced in the proportion that the area of the Premises
remaining tenantable after the casualty bears to the area of the Premises just
prior to the casualty. If any portion of Base Rent is abated under this Section
15.1, Landlord may elect to extend the expiration date of the Term for the
period of the abatement.

         15.2 ACTS OF TENANT. Notwithstanding any provisions of this Lease to
the contrary, if the Premises or the Complex are damaged or destroyed as a
result of a casualty arising from the acts or omissions of Tenant, or any of
Tenant's officers, directors, shareholders, partners, employees, contractors,
agents, invitees or representatives, (a) Tenant's obligation to pay Rent and to
perform its other obligations under this Lease shall not be abated, reduced or
altered in any manner, (b) Landlord shall not be obligated to repair or restore
the Premises or the Complex and (c) subject to Section 17.2, Tenant shall be
obligated, at Tenant's cost, to repair and restore the Premises or the Complex
to the condition they were in just prior to the damage or destruction under the
direction and supervision of, and to the satisfaction of, Landlord and any
Landlord Mortgagee.

16. SUBORDINATION AND ATTORNMENT.

         16.1 GENERAL. This Lease, Tenant's leasehold estate created hereby and
all of Tenant's rights, titles and interests hereunder and in and to the
Premises are subject and subordinate to any Mortgage presently existing or
hereafter placed upon all or any portion of the Complex. However, Landlord and
Landlord's Mortgagee may, at any time upon the giving of written notice to
Tenant and without any compensation or consideration being payable to Tenant,
make this Lease, and the aforesaid leasehold estate and rights, titles and
interests, superior to any Mortgage. Upon the written request by Landlord or by
Landlord's Mortgagee to Tenant, and within five (5) days of the date of such
request, and without any compensation or consideration being payable to Tenant,
Tenant shall execute, have acknowledged and deliver a recordable instrument
confirming that this Lease, Tenant's leasehold estate in the Premises and all of
Tenant's rights, titles and interests hereunder are subject and subordinate (or,
at the election of Landlord or Landlord's Mortgagee, superior) to the Mortgage
benefiting Landlord's Mortgagee.

         16.2 ATTORNMENT. Upon the written request of any person or party
succeeding to the interest of Landlord under this Lease, Tenant shall
automatically become the tenant of and attorn to such successor in interest
without any change in any of the terms of this Lease. No successor in interest
shall be (a) bound by any payment of Rent for more than one month in advance,
except payments of security for the performance by Tenant of Tenant's
obligations under this Lease, (b) subject to any offset, defense or damages
arising out of a default or any obligations of any preceding Landlord or (c)
bound by any amendment of this Lease entered into after Tenant has been given
written notice of the name and address of Landlord's Mortgagee and without the

<PAGE>

written consent of Landlord's Mortgagee or such successor in interest. The
subordination, attornment and mortgage protection clauses of this Section 16
shall be self-operative and no further instruments of subordination, attornment
or mortgagee protection need be required by any Mortgagee or successor in
interest thereto. Nevertheless, upon the written request therefor and without
any compensation or consideration being payable to Tenant, Tenant agrees to
execute, have acknowledged and deliver such instruments as maybe requested to
confirm the same.

17. INSURANCE.

         17.1 GENERAL. Tenant shall obtain and maintain throughout the Term the
following policies of insurance:

                 (a) fire and all risk insurance, with vandalism, malicious
         mischief and sprinkler leakage endorsements, on all of Tenant's
         personal property located in, and on all Non-Building Standard Items
         to, the Premises in an amount not less than eighty percent of the
         replacement cost thereof;

                  (b) comprehensive general and contractual liability insurance
         against claims for personal injury, bodily injury, death and property
         damage occurring in or about the Premises, such insurance to afford
         protection to the limits of not less than $1,000,000 per occurrence;

                  (c) insurance required hereunder shall be written by companies
         licensed to do business in the State of Texas and shall have a minimum
         rating of A:X by Best's Key Rating Guide.

                  (d) such other policy or policies of insurance as Landlord may
         reasonably require or as Landlord is then requiring from one or more
         other tenants in the Building.

Tenant shall deliver to Landlord, prior to the Commencement Date, certificates
of such insurance and shall, at all times during the Term, deliver to Landlord
upon request true copies of such insurance policies. The policy described in
clause (b) shall (i) name Landlord as an additional insured, (ii) provide that
it will not be canceled, reduced or non-renewed without 30-days' prior written
notice to Landlord, (iii) insure performance of the indemnities of Tenant
contained in Section 18 and elsewhere in this Lease and (iv) be primary
coverage, so that any insurance coverage obtained by Landlord shall be in excess
thereto. Tenant shall deliver to Landlord certificates of renewal at least 30
days before the expiration date of each such policy and copies of new policies
at least 30 days before terminating any such policies. All policies of insurance
required to be obtained and maintained by Tenant shall be subject to the
approval of Landlord as to terms, coverage, deductibles and issuer.

         17.2 WAIVER OF SUBROGATION. Landlord and Tenant hereby waive all
claims, rights of recovery and causes of action that either party or any party
claiming by, through or under such party may now or hereafter have by
subrogation or otherwise against the other party or against any of the other
party's officers, directors, shareholders, partners or employees for any loss or
damage that may occur to the Complex, the Premises, Tenant's improvements or any
of the contents of any of the foregoing by reason of fire or other casualty, or
by reason of any other cause except gross negligence or willful misconduct (THUS
INCLUDING SIMPLE NEGLIGENCE OF THE PARTIES HERETO OR THEIR OFFICERS, DIRECTORS,
SHAREHOLDERS, PARTNERS OR EMPLOYEES), that could have been insured against under
the terms of (a) in the case of Landlord, the standard fire and extended
coverage insurance policies available in the state where the Complex is located
at the time of the casualty and (b) in the case of Tenant, the fire and extended
coverage insurance policy required to be obtained and maintained under Section
17.1; provided, however, that the waiver set forth in this Section 17.2 shall
not apply to any deductibles on insurance policies carried by Landlord or to any
coinsurance penalty which Landlord might sustain. Landlord and Tenant shall
cause an endorsement to be issued to their respective insurance policies
recognizing this waiver of subrogation.

<PAGE>

18. TENANT'S INDEMNITY. Subject to Section 17.2, Tenant shall defend, indemnify
and hold harmless Landlord and Landlord's officers, directors, shareholders,
partners and employees from and against, all liabilities, obligations, losses,
damages, penalties, claims, actions, suits, costs, expenses and disbursements
(including court costs and reasonable attorneys' fees) resulting from any
injuries to or death of any person or damage to any property occurring during
the Term in or about the Premises.

19. THIRD PARTIES; ACTS OF FORCE MAJEURE. Landlord shall have no liability to
Tenant, or to Tenant's officers, directors, shareholders, partners, employees,
agents, contractors or invitees, for bodily injury, death, property damage,
business interruption, loss of profits, loss of trade secrets or other direct or
consequential damages occasioned by (a) the acts or omissions of any other
tenant or such other tenant's officers, directors, shareholders, partners,
employees, agents, contractors or other invitees within the Complex, (b) Force
Majeure, (c) vandalism, theft, burglary and other criminal acts (other than
those committed by Landlord and its employees), (d) water leakage or (e) the
repair, replacement, maintenance, damage, destruction or relocation of the
Premises.

20. SECURITY INTEREST. As security for Tenant's payment of Rent and performance
of all of its other obligations under this Lease, Tenant hereby grants to
Landlord a security interest in all property of Tenant now or hereafter placed
in the Premises. Landlord, as secured party, shall be entitled to all of the
rights, remedies and recourses afforded to a secured party under the Texas
Uniform Commercial Code, which rights, remedies and recourses shall be
cumulative of all other rights, remedies, recourses, liens and security
interests afforded Landlord by law, equity or this Lease. Contemporaneously with
the execution of this Lease, Tenant shall execute and deliver, as debtor,
promptly upon request and without any compensation or consideration being
payable to Tenant, such additional financing statement or statements as Landlord
may request. However, Landlord may at any time file a copy of this Lease as a
financing statement.

21. CONTROL OF COMMON AREAS. Landlord shall have the exclusive control over the
Common Areas. Landlord may, from time to time, create different Common Areas,
close or otherwise modify the Common Areas, and modify and the Building Rules
and Regulations with respect thereto.

22. RIGHT TO RELOCATE. Landlord retains the right and power, to be exercised
reasonably and at Landlord's expense, to relocate Tenant within the Building in
space which is comparable in size to the Premises and is suited to Tenant's use.
Instances when the exercise of Landlord's right and power to relocate Tenant
shall be deemed reasonable include, but shall not be limited to, instances where
Landlord desires to consolidate the rentable area in the Building to provide
Landlord's services more efficiently, or to provide contiguous vacant space for
a prospective tenant. Landlord shall not be liable to Tenant for any claims
arising in connection with a relocation permitted under this Section 22.

23. QUIET ENJOYMENT. Provided Tenant has performed all its obligations under
this Lease, Tenant shall and may peaceably and quietly have, hold, occupy, use
and enjoy the Premises during the Term subject to the provisions of this Lease.
Landlord shall warrant and forever defend Tenant's right to occupancy of the
Premises against the claims of any and all persons whomsoever lawfully claiming
the same or any part thereof, by, through or under Landlord, but not otherwise,
subject to the provisions of this Lease.

<PAGE>

24. DEFAULT BY TENANT.

                  24.1 EVENTS OF DEFAULT. Each of the following occurrences
         shall constitute an Event of Default (herein so called):

                  (a) The failure of Tenant to pay Rent as and when due
         hereunder and the continuance of such failure for a period of three
         days after written notice from Landlord to Tenant specifying the
         failure; provided, however, after Landlord has given Tenant written
         notice pursuant to this clause (a) on two separate occasions Landlord
         shall not be required to give Tenant any further notice under this
         clause (a);

                  (b) The failure of Tenant to perform, comply with or observe
         any other agreement, obligation or undertaking of Tenant, or any other
         term, condition or provision, in this Lease, and the continuance of
         such failure for a period of ten days after written notice from
         Landlord to Tenant specifying the failure;

                  (c) The abandonment of the Premises by Tenant or the failure
         of Tenant to occupy the Premises or any significant portion thereof,

                  (d) The filing of a petition by or against Tenant (the term
         "Tenant" also meaning, for the purpose of this clause (d), any
         guarantor of the named Tenant's obligations hereunder) (i) in any
         bankruptcy or other insolvency proceeding, (ii) seeking any relief
         under the Bankruptcy Code or any similar debtor relief law, (iii) for
         the appointment of a liquidator or receiver for all or substantially
         all of Tenant's property or for Tenant's interest in this Lease or (iv)
         to reorganize or modify Tenant's capital structure; and

                  (e) The admission by Tenant in writing that it cannot meet its
         obligations as they become due or the making by Tenant of an assignment
         for the benefit of its creditors.

         24.2 REMEDIES OF LANDLORD. Upon any Event of Default, Landlord may, at
Landlord's option and in addition to all other rights, remedies and recourses
afforded Landlord hereunder or by law or equity, do any one or more of the
following:

                  (a) Terminate this Lease by the giving of written notice to
         Tenant, in which event Tenant shall pay to Landlord the sum of (i) all
         Rent and other amounts accrued hereunder to the date of termination,
         (ii) all amounts due under Section 24.3 and (iii) liquidated damages in
         an amount equal to (A) the total Rent that Tenant would have been
         required to pay for the remainder of the Term discounted to present
         value at the prime lending rate (or equivalent rate, however
         denominated) in effect on the date of termination at the largest
         national bank in the state where the Complex is located minus (B) the
         then present fair rental value of the Premises for such period,
         similarly discounted.

                  (b) Terminate Tenant's right to possession of the Premises
         without terminating this Lease by the giving of written notice to
         Tenant, in which event Tenant shall pay to Landlord (i) all Rent and
         other amounts accrued hereunder to the date of termination of
         possession, (ii) all amounts due from time to time under Section 24.3
         and (iii) all Rent and other sums required hereunder to be paid by
         Tenant during the remainder of the Term, diminished by any net sums
         thereafter received by Landlord through reletting the Premises during
         said period. Reentry by Landlord in the Premises will not affect the
         obligations of Tenant hereunder for the unexpired Term. Landlord may
         bring action against Tenant to collect amounts due by Tenant on one or
         more occasions, without the necessity of Landlord's waiting until
         expiration of the Term. If Landlord elects to proceed under this
         Section 24.2(b), it may at any time elect to terminate this Lease
         pursuant to Section 24.2(a).

<PAGE>

                  (c) Without notice, alter any and all locks and other security
         devices at the Premises without being obligated to deliver new keys to
         the Premises, unless Tenant has cured all Events of Default before
         Landlord has terminated this Lease under Section 24.2(a) or has entered
         into a lease to relet all or a portion of the Premises.

                  (d) If an Event of Default specified in Section 24.1 (c)
         occurs, Landlord may remove and store any property that remains on the
         Premises, and, if Tenant does not claim such property within ten days
         after Landlord has delivered to Tenant notice of such storage, Landlord
         may appropriate, sell, destroy, or otherwise dispose of the property in
         question without notice to Tenant or any other person and without any
         obligation to account for such property.

         24.3 PAYMENT BY TENANT. Upon any Event of Default, Tenant shall also
pay to Landlord all costs and expenses incurred by Landlord, including court
costs and reasonable attorneys' fees, in (a) retaking or otherwise obtaining
possession of the Premises, (b) removing and storing Tenant's or any other
occupant's property, (c) repairing, restating, altering, remodeling or otherwise
putting the Premises into condition acceptable to a new tenant or tenants, (d)
reletting all or any part of the Premises, (e) paying or performing the
underlying obligation which Tenant failed to pay or perform and (f) enforcing
any of Landlord's rights, remedies or recourses arising as a consequence of the
Event of Default.

         24.4 RELETTING. Upon termination of this Lease or upon termination of
Tenant's right to possession of the Premises, Landlord shall use reasonable
efforts to relet the Premises on such terms and conditions as Landlord in its
sole discretion may determine (including a term different than the Term, rental
concessions, and alterations to, and improvements of, the Premises); however,
Landlord shall not be obligated to relet the Premises before leasing other
portions of the Building. Landlord shall not be liable, nor shall Tenant's
obligations hereunder be diminished because of, Landlord's failure to relet the
Premises or collect rent due in respect of such reletting. Tenant shall not be
entitled to the excess of any rent obtained by reletting over the Rent herein
reserved.

         24.5 LANDLORD'S RIGHT TO PAY OR PERFORM. Upon an Event of Default,
Landlord may, but without obligation to do so and without thereby waiving or
curing such Event of Default, pay or perform the underlying obligation for the
account of Tenant, and enter the Premises and expend the Security Deposit for
such purpose.

         24.6 NO WAIVER; NO IMPLIED SURRENDER. Provisions of this Lease may only
be waived by the party entitled to the benefit of the provision evidencing the
waiver in writing. Thus, neither the acceptance of Rent by Landlord following an
Event of Default (whether known to Landlord or not), nor any other custom or
practice followed in connection with this Lease, shall constitute a waiver by
Landlord of such Event of Default or any other Event of Default. Further, the
failure by Landlord to complain of any action or inaction by Tenant, or to
assert that any action or inaction by Tenant constitutes (or would constitute,
with the giving of notice and the passage of time) an Event of Default,
regardless of how long such failure continues, shall not extinguish, waive or in
any way diminish the rights, remedies and recourses of Landlord with respect to
such action or inaction. No waiver by Landlord of any provision of this Lease or
of any breach by Tenant of any obligation of Tenant hereunder shall be deemed to
be a waiver of any other provision hereof, or of any subsequent breach by Tenant
of the same or any other provision hereof. Landlord's consent to any act by
Tenant requiring Landlord's consent shall not be deemed to render unnecessary
the obtaining of Landlord's consent to any subsequent act of Tenant. No act or
omission by Landlord (other than Landlord's execution of a document
acknowledging such surrender) or Landlord's agents, including the delivery of
the keys to the Premises, shall constitute an acceptance of a surrender of the
Premises.

<PAGE>

25. DEFAULTS BY LANDLORD. Landlord shall not be in default under this Lease, and
Tenant shall not be entitled to exercise any right, remedy or recourse against
Landlord or otherwise as a consequence of any alleged default by Landlord under
this Lease, unless Landlord fails to perform any of its obligations hereunder
and said failure continues for a period of 30 days after Tenant gives Landlord
and (provided that Tenant shall have been given the name and address of
Landlord's Mortgagee) Landlord's Mortgagee written notice thereof specifying,
with reasonable particularity, the nature of Landlord's failure. If, however,
the failure cannot reasonably be cured within the 30-day period, Landlord shall
not be in default hereunder if Landlord or Landlord's Mortgagee commences to
cure the failure within the 30 days and thereafter pursues the curing of same
diligently to completion. If Tenant recovers a money judgment against Landlord
for Landlord's default of its obligations hereunder or otherwise, the judgment
shall be limited to Tenant's actual direct, but not consequential, damages
therefor and shall be satisfied only out of the interest of Landlord in the
Complex as the same may then be encumbered, and Landlord shall not otherwise be
liable for any deficiency. In no event shall Tenant have the right to levy
execution against any property of Landlord other than its interest in the
Complex. The foregoing shall not limit any right that Tenant might have to
obtain specific performance of Landlord's obligations hereunder.

26. RIGHT OF REENTRY. Upon the expiration or termination of the Term for
whatever cause, or upon the exercise by Landlord of its right to re-enter the
Premises without terminating this Lease, Tenant shall immediately, quietly and
peaceably surrender to Landlord possession of the Premises in "broom clean" and
good order, condition and repair, except only for ordinary wear and tear, damage
by casualty not covered by Section 15.2 and repairs to be made by Landlord
pursuant to Section 15.1. If Tenant fails to surrender possession as herein
required, Landlord may, without giving Tenant prior notice to vacate the
Premises or any other notice, initiate any and all legal action as Landlord may
elect to dispossess Tenant and all of its property, and all persons or firms
claiming by, through or under Tenant and all of their property, from the
Premises, and may remove from the Premises and store (without any liability for
loss, theft, damage or destruction thereto) any such property at Tenant's cost.
While Tenant remains in possession of the Premises after such expiration,
termination or exercise by Landlord of its re-entry right, Tenant shall be
deemed to be occupying the Premises as a tenant-at-sufferance, subject to all of
the obligations of Tenant under this Lease, except that the daily Rent shall be
twice the per day Rent in effect immediately before such expiration, termination
or exercise by Landlord. No such holding over shall extend the Term. If Tenant
fails to surrender possession of the Premises in the condition herein required,
Landlord may, at Tenant's expense, restore the Premises to such condition.

27. MISCELLANEOUS.

         27.1 INDEPENDENT OBLIGATIONS; NO OFFSET. The obligations of Tenant to
pay Rent and to perform the other undertakings of Tenant hereunder constitute
independent unconditional obligations to be performed at the times specified
hereunder, regardless of any breach or default by Landlord hereunder. Tenant
shall have no right, and Tenant hereby waives and relinquishes all rights which
Tenant might otherwise have, to claim any nature of lien against the Complex or
to withhold, deduct from or offset against any Rent or other sums to be paid to
Landlord by Tenant.

         27.2 TIME OF ESSENCE. Time is of the essence with respect to each date
or time specified in this Lease by which an event is to occur.

         27.3 APPLICABLE LAW. This Lease shall be governed by, and construed in
accordance with, the laws of the State of Texas. All monetary and other
obligations of Landlord and Tenant are performable in the county where the
Complex is located.

<PAGE>

         27.4 ASSIGNMENT BY LANDLORD. Landlord shall have the right to assign,
in whole or in part, any or all of its rights, titles or interests in and to the
Complex or this Lease and, upon any such assignment, Landlord shall be relieved
of all unaccrued liabilities and obligations hereunder to the extent of the
interest so assigned.

         27.5 COMMENCEMENT DATE AND ESTOPPEL CERTIFICATES. From time to time at
the request of Landlord or Landlord's Mortgagee, Tenant will promptly and
without compensation or consideration execute, have acknowledged and deliver a
certificate stating (a) the Commencement Date and the date of expiration of the
Term, (b) the rights (if any) of Tenant to extend the Term or to expand the
Premises, (c) the Rent (or any components of the Rent) currently payable
hereunder, (d) whether this Lease has been amended in any respect and, if so,
submitting copies of or otherwise identifying the amendments, (e) whether,
within the knowledge of Tenant, there are any existing breaches or defaults by
Landlord hereunder and, if so, stating the defaults with reasonable
particularity and (f) such other information pertaining to this Lease as
Landlord or Landlord's Mortgagee may reasonably request.

         27.6 SIGNS, BUILDING NAME AND BUILDING ADDRESS. Landlord may, from time
to time at its discretion, maintain any and all signs anywhere in the Complex,
and to change the name and street address of the Complex. Tenant shall not use
the name of the Building for any purpose other than as the address of the
business to be conducted by Tenant from the Premises.

         27.7 NOTICES. All notices and other communications given pursuant to
this Lease shall be in writing and shall either be mailed by first class United
States mail, postage prepaid, registered or certified with return receipt
requested, and addressed as set forth in this Section 27.7, or delivered in
person to the intended addressee, or sent by prepaid telegram, cable or telex
followed by a confirmatory letter. Notice mailed in the aforesaid manner shall
become effective three business days after deposit; notice given in any other
manner, and any notice given to Landlord, shall be effective only upon receipt
by the intended addressee. Each party shall have the continuing right to change
its address for notice hereunder by the giving of 15 days' prior written notice
to the other party in accordance with this Section 27.7. ALL PAYMENTS SHOULD BE
MADE PAYABLE TO "THE MADISON OFFICE BUILDING" AND DELIVERED TO THE PROPERTY
MANNER'S OFFICE.

    Landlord:                                   Tenant:
    --------                                    ------

    State of Utah Retirement Investment Fund    Humitech, Inc.
    c/o Cottonwood Partners                     15851 Dallas Parkway, Suite 410
    5956 Sherry Lane, Suite 850                 Addison, Texas 75001
    Dallas, Texas 75225

    cc: Attn: Property Manager
    Cottonwood Management Services
    15851 Dallas Parkway, Suite 725
    Addison, Texas 75001

         27.8 ENTIRE AGREEMENT, AMENDMENT AND BINDING EFFECT. This Lease
constitutes the entire agreement between Landlord and Tenant relating to the
subject matter hereof and all prior agreements relative hereto which are not
contained herein are terminated. This Lease may be amended only by a written
document duly executed by Landlord and Tenant (and, if a Mortgage is then in
effect, by the Landlord's Mortgagee entitled to the benefits thereof), and any
alleged amendment which is not so documented shall not be effective as to either
party. The provisions of this Lease shall be binding upon and inure to the
benefit of the parties hereto and their heirs, executors, administrators,
successors and assigns; provided, however, that this Section 27.8 shall not
negate, diminish or alter the restrictions on Transfers applicable to Tenant set
forth elsewhere in this Lease.

<PAGE>

         27.9 SEVERABILITY. This Lease is intended to be performed in accordance
with and only to the extent permitted by all Legal Requirements. If any
provision of this Lease or the application thereof to any person or circumstance
shall, for any reason and to any extent, be invalid or unenforceable, but the
extent of the invalidity or unenforceability does not destroy the basis of the
bargain between the parties as contained herein, the remainder of this Lease and
the application of such provision to other persons or circumstances shall not be
affected thereby, but rather shall be enforced to the greatest extent permitted
by law.

         27.10 NUMBER AND GENDER, CAPTIONS AND REFERENCES. As the context of
this Lease may require, pronouns shall include natural persons and legal
entities of every kind and character, the singular number shall include the
plural and the neuter shall include the masculine and the feminine gender.
Section headings in this Lease are for convenience of reference only and are not
intended, to any extent and for any purpose, to limit or define any section
hereof. Whenever the terms "hereof," "hereby," "herein", "hereunder" or words of
similar import are used in this Lease, they shall be construed as referring to
this Lease in its entirety rather than to a particular section or provision,
unless the context specifically indicates to the contrary. Any reference to a
particular "Section" shall be construed as referring to the indicated section of
this Lease.

         27.11 ATTORNEYS' FEES. If either party hereto initiates any litigation
against the other party relating to this Lease, the prevailing party shall be
entitled to recover, in addition to all damages allowed by law and other relief,
all court costs and reasonable attorneys' fees incurred in connection with such
litigation.

         27.12 BROKERS. Tenant and Landlord hereby warrant and represent unto
the other that it has not incurred or authorized any brokerage commission,
finder's fees or similar payments in connection with this Lease, other than that
which is due to Cottonwood Partners, which payment shall be paid by Landlord.
Each party shall defend, indemnify and hold the other harmless from and against
any claim for brokerage commission, finder's fees or similar payment arising by
virtue of authorization of such party, or any Affiliate of such party, in
connection with this Lease.

         27.13 INTEREST ON TENANT'S OBLIGATIONS. Any amount due from Tenant to
Landlord which is not paid when due shall bear interest at the maximum rate
allowed by law from the date such payment is due until paid, but the payment of
such interest shall not excuse or cure the default in payment.

         27.14 AUTHORITY. The person executing this Lease on behalf of Tenant
personally warrants and represents to Landlord that (a) Tenant is a duly
organized and existing legal entity, in good standing in the State of Texas; (b)
Tenant has full right and authority to execute, deliver and perform this Lease;
(c) the person executing this Lease on behalf of Tenant was authorized to do so;
and (d) upon request of Landlord, such person will deliver to Landlord
satisfactory evidence of his or her authority to execute this Lease on behalf of
Tenant.

         27.15 RECORDING. Neither this Lease (including any Exhibit hereto) nor
any memorandum hereof shall be recorded without the prior written consent of
Landlord.

         27.16 EXHIBITS. All Exhibits and written addenda hereto are
incorporated herein for any and all purposes.

         27.17 MULTIPLE COUNTERPARTS. This Lease may be executed in two or more
counterparts, each of which shall be an original, but all of which shall
constitute but one instrument.

EXECUTED as of the date and year above first written.

<PAGE>

TENANT ACKNOWLEDGES THAT LANDLORD HAS MADE NO WARRANTIES TO TENANT AS TO THE
CONDITION OF THE PREMISES, EITHER EXPRESS OR IMPLIED, AND LANDLORD AND TENANT
EXPRESSLY DISCLAIM ANY IMPLIED WARRANTY THAT THE PREMISES ARE SUITABLE FOR
TENANT'S INTENDED COMMERCIAL PURPOSE, AND TENANT'S OBLIGATION TO PAY RENT
HEREUNDER IS NOT DEPENDENT UPON THE CONDITION OF THE PREMISES OR THE PERFORMANCE
BY LANDLORD OF ITS OBLIGATIONS HEREUNDER, AND TENANT SHALL CONTINUE TO PAY THE
RENT, WITHOUT ABATEMENT (EXCEPT AS OTHERWISE EXPRESSLY PROVIDED HEREIN), SET
OFF, DEDUCTION, NOTWITHSTANDING ANY BREACH BY LANDLORD OF ITS DUTIES OR
OBLIGATIONS HEREUNDER, WHETHER EXPRESS OR IMPLIED.

         TENANT:           HUMITECH, INC.,
                           A NEVADA CORPORATION

                           By: /s/ Michael R. Davis
                               -------------------------------------------------

                           Name: Michael R. Davis
                                 -----------------------------------------------

                           Title: Chief Financial Officer
                                  ----------------------------------------------

         LANDLORD:         UTAH STATE RETIREMENT INVESTMENT FUND,
                           AN INDEPENDENT AGENCY OF THE STATE OF UTAH

                           BY: Wallace Realty Advisors, Ltd.,
                               A Texas limited partnership

                           BY: Wallace Realty Advisors 1, Inc.,
                               A Texas corporation, its general partner

                               By: /s/ Robert J. Axley
                                   -----------------------------------

                               Name: Robert J. Axley
                                     ---------------------------------

                               Title: Chairman
                                      --------------------------------

                               By: /s/ John L. West
                                   -----------------------------------

                               Name: John L. West
                                     ---------------------------------

                               Title: President
                                      --------------------------------

<PAGE>

                                  EXHIBIT INDEX
                                  -------------

Exhibit A:        Glossary

Exhibit B:        Description of Premises

Exhibit C:        Rules and Regulations

Exhibit D:        Work Letter

Exhibit E:        Property Legal Description

Exhibit F:        Renewal Option

<PAGE>

                                    EXHIBIT A

                            GLOSSARY OF DEFINED TERMS
                            -------------------------

1. "ADDENDUM" shall mean the Addendum, if any, attached to this Lease.

2. "AFFILIATE" shall mean a person or party who or which controls, is controlled
by or is under common control with another person or party.

3. "BUILDING" shall mean that certain 12 floor office building and garage
structure constructed on the Land, the street address of which is 15851 Dallas
Parkway, Addison, Texas, and is more particularly described in the deed recorded
in Volume 85021, Page 1686 of the Deed Records of Dallas County, Texas. The term
"Building" shall include all fixtures and appurtenances in and to the aforesaid
structure, including specifically but without limitation all above grade
walkways and all electrical, mechanical, plumbing, security, elevator, boiler,
HVAC, telephone, water, gas, storm sewer, sanitary sewer and all other utility
systems and connections, all life support systems, sprinklers, smoke detection
and other fire protection systems, and all equipment, machinery, shafts, flues,
piping, wiring, ducts, duct work, panels, instrumentation and other
appurtenances relating thereto.

4. "BUILDING OPERATING HOURS" shall mean 7:00 a.m. to 7:00 p.m. Monday through
Friday and Saturday 7:00 a.m. to 1:00 p.m., exclusive of Sundays and Holidays.

5. "BUILDING RULES AND REGULATIONS" shall mean the rules and regulations
governing the Complex promulgated by Landlord from time to time. The current
Building Rules and Regulations maintained by Landlord are attached as Exhibit C
hereto.

6. "BUILDING STANDARD", when applied to an item, shall mean such item as has
been designated by Landlord (orally or in writing) as generally applicable
throughout the leased portions of the Building.

7. "COMMENCEMENT DATE" shall mean the date of the commencement of the Term as
determined pursuant to Section 6.3.

8. "COMMON AREAS" shall mean all areas and facilities within the Complex which
have been constructed and are being maintained by Landlord for the common,
general, non-exclusive use of all tenants in the Building, and shall include
restrooms, lobbies, corridors, service areas, elevators, stairs and stairwells,
the Parking Facility, driveways, loading areas, ramps, walkways and landscaped
areas.

9. "COMPLEX" shall mean the Land and all improvements thereon, including the
Building and the Parking Facility.

10. "EXPENSE STOP" shall mean that portion of the Operating Expenses, expressed
in terms of dollars per square foot of Net Rentable Area per Fiscal Year, which
will be excluded from the computation of Additional Rent. Unless changed by
mutual agreement of the parties, the "Expense Stop" shall equal the actual
operating expenses for calendar year 2002.

11. "FISCAL YEAR" shall mean the fiscal year (or portion thereof) of Landlord as
elapses during the Term. The Fiscal Year currently commences on January 1;
however, Landlord may change the Fiscal Year at any time or times.

<PAGE>

12. "FORCE MAJEURE" shall mean the occurrence of any event which hinders,
prevents or delays the performance by Landlord of any of its obligations
hereunder and which is beyond the reasonable control of Landlord.

13. "HOLIDAYS" shall mean (a) New Year's Day, Memorial Day, Independence Day,
Labor Day, Thanksgiving Day and Christmas Day, (b) other days on which national
or state banks located in the state where the Complex is located must or may
close for ordinary operations and (c) other days which are commonly observed as
holidays by the majority of tenants of the Building. If the Holiday occurs on a
Saturday or Sunday, the Friday preceding or the Monday following may, at
Landlord's discretion, be observed as a Holiday.

14. "HVAC" shall mean the heating, ventilation and air conditioning systems in
the Building.

15. "IMPOSITIONS" shall mean (a) all real estate, personal property, rental,
water, sewer, transit, use, occupancy and other taxes, assessments, charges,
excises and levies (including any interest, costs or penalties with respect
thereto), general and special, ordinary and extraordinary, foreseen and
unforeseen of any kind and nature whatsoever which are assessed, levied, charged
or imposed upon or with respect to the Complex, or any portion thereof, or the
sidewalks, streets or alley ways adjacent thereto, or the ownership, use,
occupancy or enjoyment thereof (including but not limited to mortgage taxes and
other taxes and assessments passed on to Landlord by Landlord's Mortgagee) and
(b) all charges for any easement, license, permit or agreement maintained for
the benefit of the Complex. "Impositions" shall not include income taxes, estate
and inheritance taxes, excess profit taxes, franchise taxes, taxes imposed on or
measured by the income of Landlord from the operation of the Complex, and taxes
imposed on account of the transfer of ownership of the Complex or the Land. If
any or all of the Impositions be discontinued and, in substitution therefor,
taxes, assessments, charges, excises or impositions be assessed, levied, charged
or imposed wholly or partially on the Rents received or payable hereunder (a
"SUBSTITUTE IMPOSITION"), then the Substitute Imposition shall be deemed to be
included within the term "Impositions".

16. "Impositions Stop" shall mean that portion of the amount of Impositions,
expressed in terms of dollars per square foot of Net Rentable Area per Fiscal
Year, which will be excluded from the computation of Additional Rent.

Unless changed by mutual agreement of the parties, the "Impositions Stop" shall
equal the actual real estate taxes for calendar year 2002.

17. [deleted]

18. "LAND" shall mean the real property on which the Building is constructed and
which is further described in Exhibit E hereto.

19. "LANDLORD'S MORTGAGEE" shall mean the mortgagee of any mortgage, the
beneficiary of any deed of trust, the pledgee of any pledge, the secured party
of any security interest, the assignee of any assignment and the transferee of
any other instrument of transfer (including the ground lessor of any ground
lease on the Land) now or hereafter in existence on all or any portion of the
Complex, and their successors, assigns and purchasers. "Mortgage" shall mean any
such mortgage, deed of trust, pledge, security agreement, assignment or transfer
instrument, including all renewals, extensions and rearrangements thereof and of
all debts secured thereby.

<PAGE>

20. "LANDLORD'S WORK" shall mean all improvements, components, assemblies,
installations, finish, labor, materials and services that Landlord is required
to furnish, install, perform, provide or apply to the Premises as specified in
the Work Letter.

21. "LEGAL REQUIREMENTS" shall mean any and all (a) judicial decisions, orders,
injunctions, writs, statutes, rulings, rules, regulations, promulgations,
directives, permits, certificates or ordinances of any governmental authority in
any way applicable to Tenant or the Complex, including but not limited to the
Building Rules and Regulations, zoning, environmental and utility conservation
matters, (b) requirements imposed on Landlord by any Landlord's Mortgagee, (c)
insurance requirements and (d) other documents, instruments or agreements
(written or oral) relating to the Complex or to which the Complex may be bound
or encumbered.

22. "NET RENTABLE AREA" whether of the Premises or the Complex shall mean the
area determined pursuant to the American National Standard Method for measuring
floor space in office buildings, as set forth in American National Standard's
Institute publication Z65.1-1980 and as, from time to time, revised. Landlord
and Tenant hereby stipulate that, unless and until revised by virtue of the
application of the standards set forth in said publication or in a revised
publication, the Net Rentable Area of the Premises shall be 2,994 square feet
and the Net Rentable Area of the Building shall be 288,920 square feet.

23. "OPERATING EXPENSES" shall mean all costs and expenses which Landlord pays
or accrues by virtue of the ownership, use, management, leasing, maintenance,
service, operation, insurance or condition of the Complex during a particular
Fiscal Year or portion thereof as determined by Landlord or its certified public
accountants in accordance with generally accepted accounting principles plus (in
instances where the Building was not fully occupied for the entire period in
question) all additional costs and expenses which Landlord or such accountant
reasonably determines Landlord would have paid or accrued during such period if
the Building has been fully occupied (defined as 95% occupied). "Operating
Expenses" shall include, but shall not be limited to, the following to the
extent they relate to the Complex:

         (a)      all insurance premiums charged for policies obtained by
                  Landlord, which may include without limitation, at Landlord's
                  election, (i) fire and extended coverage insurance including
                  earthquake, windstorm, hail, explosion, riot, strike, civil
                  commotion, aircraft, vehicle and smoke insurance, (ii) public
                  liability and property damage insurance, (iii) elevator
                  insurance, (iv) workmen's compensation insurance for the
                  employees covered by clause (g), (v) boiler, machinery,
                  sprinkler, water damage, legal liability, burglary, hold-up,
                  fidelity and pilferage insurance, (vi) rental loss insurance
                  and (vii) such other insurance as Landlord may elect to
                  obtain;

         (b)      all deductible amounts incurred in any Fiscal Year relating to
                  an insurable loss;

         (c)      all maintenance, repair, replacement and painting costs;

         (d)      all janitorial, custodial, cleaning, washing, landscaping,
                  landscape maintenance, trash removal and pest control costs;

         (e)      all security costs;

         (f)      all electrical, energy monitoring, water, water treatment,
                  gas, sewer, telephone and other utility and utility related
                  charges;

         (g)      all wages, salaries, salary burdens, employee benefits,
                  payroll taxes, social security and insurance for all persons
                  engaged by Landlord or an Affiliate of Landlord or the
                  property management company engaged by Landlord or affiliates
                  of the Property management company engaged by Landlord;

<PAGE>

         (h)      all costs of leasing or purchasing supplies, tools, equipment
                  and materials;

         (i)      all management fees and other charges for management services
                  (including, without limitation, travel and related expenses),
                  whether provided by an independent management company, by
                  Landlord or by an Affiliate of Landlord;

         (j)      all fees and other charges paid under all maintenance and
                  service agreements, including but not limited to window
                  cleaning, elevator and HVAC maintenance;

         (k)      all legal, accounting and auditing fees and expenses; and

         (l)      amortization of the cost of acquiring, financing and
                  installing capital items which are intended to reduce (or
                  avoid increases in) operating expenses or which are required
                  by a governmental authority. Such costs shall be amortized
                  over the reasonable life of the items in accordance with
                  generally accepted accounting principles, but not beyond the
                  reasonable life the Building.

"Operating Expenses" shall not include (i) expenditures classified as capital
expenditures for federal income tax purposes except as set forth in clause (1),
(ii) costs for which Landlord is entitled to specific reimbursement by Tenant,
by any other tenant of the Building or by any other third party, (iii)
allowances specified in the Work Letter for expenses incurred by Landlord for
improvements to the Premises, (iv) leasing commissions, and all non-cash
expenses (including depreciation), except for the amortized costs specified in
clause (I), (v) land or ground rent, if applicable, and (vi) debt service on any
indebtedness secured by the Complex (except debt service on indebtedness to
purchase or pay for items specified as permissible "Operating Expenses" under
clause (a) through (l)).

24. "PARKING FACILITY" shall mean (a) any parking garage and any other parking
lot or facility adjacent to or in the Complex servicing the Building and (b) any
parking area, open or covered, leased by Landlord to service the Building.

25. "PREMISES" shall mean the area leased by Tenant pursuant to this Lease as
outlined on the floor plan drawing attached as Exhibit B hereto and all other
space added to the Premises pursuant to the terms of this Lease. The Premises
includes the space between the top surface of the floor slab of the outlined
area and the finished surface of the ceiling immediately above.

26. "RENT" shall mean Base Rent, Additional Rent, the parking charge called for
in Section 5.4 and all other amounts provided for under this Lease to be paid by
Tenant, whether as additional rent or otherwise. "BASE RENT" shall mean the base
rent specified in Section 5.1 as adjusted in accordance with Section 5.2. "BASE
RENT ADJUSTMENT" shall mean the increase in the annual Base Rent as set forth in
Section 5.2. "ADDITIONAL RENT" shall mean the additional rent specified in
Section 5.3.

27. "SECURITY DEPOSIT" shall mean $5,114.75 paid by Tenant as security for the
full and faithful performance of the obligations of Tenant under this Lease.

28. "TAKING" or "TAKEN" shall mean the actual or constructive condemnation, or
the actual or constructive acquisition by or under threat of condemnation,
eminent domain or similar proceeding, by or at the direction of any governmental
authority or agency.

<PAGE>

29. "TENANT'S SHARE" shall mean the proportion by which the Net Rentable Area of
the Premises bears to the Net Rentable Area of the Building. "Tenant's Share"
shall be adjusted by Landlord from time to time to reflect adjustments to the
then current Net Rentable Area of the Building or the Premises. "Tenant's Share"
shall initially mean 2,994 rentable square feet divided by 288,920 rentable
square feet x 100 = 1.0363%.

30. "TRANSFER" shall mean (a) an assignment (direct or indirect, absolute or
conditional, by operation of law or otherwise) by Tenant of all or any portion
of Tenant's interest in this Lease or the leasehold estate created hereby, (b) a
sublease of all or any portion of the Premises or (c) the grant or conveyance by
Tenant of any concession or license within the Premises. If Tenant is a
corporation then any transfer of this Lease by merger, consolidation or
dissolution, or by any change in ownership or power to vote a majority of the
voting stock (being the shares of stock regularly entitled to vote for the
election of directors) in Tenant outstanding at the time of execution of this
Lease shall constitute a Transfer. If Tenant is a partnership having one or more
corporations as general partners, the preceding sentence shall apply to each
corporation as if the corporation alone had been the Tenant hereunder. If Tenant
is a general or limited partnership, joint venture or other form of association,
the transfer of a majority of the ownership interests therein shall constitute a
Transfer. "TRANSFEREE" shall mean the assignee, sublessee, pledgee,
concessionee, licensee or other transferee of all or any portion of Tenant's
interest in this Lease, the leasehold estate created hereby or the Premises.

31. "WORK LETTER" shall mean the agreement, if any, attached as Exhibit D hereto
between Landlord and Tenant for the construction of improvements in the
Premises.

<PAGE>

                                    EXHIBIT B

                                    PREMISES
                                    --------

                                    Suite 410

                   (Approximately 2,994 Rentable Square Feet)

<PAGE>

                                    EXHIBIT C
                                    ---------

                              RULES AND REGULATIONS
                              ---------------------

1. Landlord may from time to time adopt appropriate systems and procedures for
the security or safety of the Building, any persons occupying, using, or
entering the Building, or any equipment, finishings, or contents of the
Building, and each tenant shall comply with such systems and procedures.

2. Tenant's employees, visitors, and licensees shall not loiter in or interfere
with the use of the Parking Facility or the Complex's driveway or parking areas
nor consume alcohol in the common areas of the Complex or the Parking Facility.
The sidewalks, halls, passages, exits, entrances, elevators, escalators, and
stairways of the Building will not be obstructed by any tenants or used by any
of them for any purpose other than for ingress to and egress from their
respective premises. The halls, passages, exits, entrances, elevators,
escalators, and stairways are not for the general public, and Landlord may
control and prevent access to them by all persons whose presence, in the
reasonable judgment of Landlord, would be prejudicial to the safety, character,
reputation and interests of the Building and its tenants; in determining whether
access will be denied, Landlord may consider attire worn by a person and its
appropriateness for an office building, whether shoes are being worn, use of
profanity, either verbally or on clothing, actions of a person (including,
without limitation, spitting, verbal abusiveness, and the like), and such other
matters as Landlord may reasonably consider appropriate.

3. No sign, placard, picture, name, advertisement, or notice visible from the
exterior of any tenant's premises shall be inscribed, painted, affixed, or
otherwise displayed by any tenant on any part of the Building without the prior
written consent of Landlord. All approved signs or lettering on doors will be
printed, painted, affixed, or inscribed at the expense of the tenant desiring
such by a person approved by Landlord. Material visible from outside the
Building will not be permitted. Landlord may remove such material without any
liability, and may charge the expense incurred by such removal to the tenant in
question.

4. No curtains, draperies, blinds, shutters, shades, screens, or other
coverings, hangings, or decorations will be attached to, hung, or placed in, or
used in connection with any window of the Building or the Premises.

5. The sashes, sash doors, skylights, windows, heating, ventilating, and air
conditioning vents and doors that reflect or admit light and air into the halls,
passageways, or other public places in the Building shall not be covered or
obstructed by any tenant, nor will any bottles, parcels, or other articles be
placed on any window sills.

G. No showcases or other articles will be put in front of or affixed to any part
of the exterior of the Building, nor placed in the public halls, corridors, or
vestibules without the prior written consent of Landlord.

7. No tenant will permit its Premises to be used for lodging or sleeping. No
cooking will be done or permitted by any tenant on its premises, except in areas
of the premises which are specially constructed for cooking, so long as such use
is in accordance with all applicable federal, state, and city laws, codes,
ordinances, rules, and regulations.

8. No tenant will employ any person or persons other than the cleaning service
of Landlord for the purpose of cleaning the premises, unless otherwise agreed by
Landlord in writing. If any tenant's actions result in any increased expense for
any required cleaning, Landlord may assess such tenant for such expenses.
Janitorial service will not be furnished on nights to offices which are occupied
after business hours on those nights unless, by prior written agreement of
Landlord, service is extended to a later hour for specifically designated
offices.

<PAGE>

9. The toilets, urinals, wash bowls, and other plumbing fixtures will not be
used for any purposes other than those for which they were constructed, and no
sweepings, rubbish, rags, or other foreign substances will be thrown in them.
All 3amages resulting from any misuse of the fixtures will be borne by the
tenant who, or whose servants, employees, agents, visitors, or licensees, have
caused the damage.

10. No tenant will deface any part of the premises or the Building. Without the
prior written consent of Landlord, no tenant will lay linoleum, or other similar
floor covering, so that it comes in direct contact with the floor of such
tenant's premises. If linoleum or other similar floor covering is to be used, an
interlining of builder's deadening felt will be first affixed to the floor, by a
paste or other material, soluble in water. The use of cement or other similar
adhesive material is expressly prohibited.

11. No tenant will alter, change, replace, or rekey any lock or install a new
lock or a knocker on any door of the premises. Landlord, its agent or employee,
will retain a master key to all door locks on the premises. Any new door locks
required by a tenant or any change in keying of existing locks will be installed
or changed by Landlord following such tenant's written request to Landlord and
will be at such tenant's expense. All new locks and rekeyed locks will remain
operable by Landlord's master key. Landlord will furnish to each tenant, free of
charge, two (2) keys to each door lock on its premises. Landlord will have the
right to collect a reasonable charge for additional keys and cards requested by
any tenant. Each tenant, upon termination of its tenancy, will deliver to
Landlord all keys and access cards for the premises and Building which have been
furnished to such tenant.

12. The elevator designated for freight by Landlord will be available for use by
all tenants in the Building during the hours and pursuant to such procedures as
Landlord may determine from time to time. The persons employed to move tenant's
equipment, material, furniture, or other property in or out of the Building must
be acceptable to Landlord; such persons must be a locally recognized
professional mover, whose primary business is the performing of relocation
services, and must be bonded and fully insured. A certificate or other
verification of such insurance must be received and approved by Landlord prior
to the start of any moving operations. Insurance must be sufficient, in
Landlord's sole opinion, to cover all personal liability, theft, or damage to
the Building, including without limitation floor coverings, doors, walls,
elevators, stairs, foliage, and landscaping. All moving operations will be
conducted at such times and in such a manner as Landlord may direct, and all
moving will take place during nonbusiness hours unless Landlord otherwise agrees
in writing. The moving tenant shall be responsible for the provision of Building
security during all moving operations, and shall be liable for all losses and
damages sustained by any party as a result of the failure to supply adequate
security. Landlord may prescribe the weight, size, and position of all
equipment, materials, furniture, or other property brought into the Buildings.
Heavy objects will, if considered necessary by Landlord, stand on wood strips of
such thickness as is necessary to distribute the weight properly. Landlord will
not be responsible for loss of or damage to any such property from any cause,
and all damage done to the Building by moving or maintaining such property will
be repaired at the expense of the moving tenant. Landlord may inspect all such
property to be brought into the Building and to exclude from the Building all
such property which violates any of these rules and regulations or the lease of
which these rules and regulations are a part. Supplies, goods, materials,
packages, furniture, and all other items of every kind delivered to or taken
from the premises will be delivered or removed through the entrance and route
designated by Landlord.

13. No tenant will use or keep in the premises or the Building any kerosene,
gasoline, or inflammable or combustible or explosive fluid or material or
chemical substance other than limited quantities of them reasonably necessary
for the operation or maintenance of office equipment or limited quantities of
cleaning fluids and solvents required in normal operation of the premises.

<PAGE>

Without Landlord's prior written approval, no tenant will use any method of
heating or air conditioning other than that supplied by Landlord. No tenant will
keep any firearms within the Premises. No tenant will use or keep or permit to
be used or kept any foul or noxious gas or substance in the premises, or permit
of suffer the premises to be occupied or used in a manner offensive or
objectionable to Landlord or other occupants of the Building by reason of noise,
odors, or vibrations, or interfere in any way with other tenants or those having
business in the Building.

14. Landlord may without notice and without liability to any tenant, change the
name and street address of the Building.

15. Landlord will have the right to prohibit any advertising by tenant,
mentioning the Building, which, in Landlord's reasonable opinion, tends to
impair the reputation of the Building or its desirability as a Building for
offices, and upon written notice from Landlord, tenant will discontinue such
advertising.

16. Tenant will not bring any animals or birds into the Building, and will not
permit bicycles or other vehicles inside or on the sidewalks outside the
Building except in areas designated from time to time by Landlord for such
purposes.

17. All persons entering or leaving the Building at any time other than the
Building's business hours shall comply with such off-hour regulations as
Landlord may establish and modify from time to time. Landlord may limit or
restrict access to the Building during such periods.

18. Each tenant will store all its trash and garbage within its premise. No
material will be placed in the trash boxes or receptacles if such material is of
such nature that it may not be disposed of in the ordinary and customary manner
of removing and disposing of trash and garbage without being in violation of any
law or ordinance governing such disposal. All garbage and refuse disposal will
be made only through entryways and elevators provided for such purposes and at
such times as Landlord may designate. No furniture, appliances, equipment, or
flammable products of any type may be disposed of in the Building trash
receptacles.

19. Canvassing, peddling, soliciting, and distribution of handbills or any other
written materials in the Building are prohibited, and each tenant will cooperate
to prevent same.

20. Each tenant shall keep the doors of the premises closed and locked and shall
shut off all water faucets, water apparatus, and utilities before tenant or
tenant's employees leave the premises, so as to prevent waste or damage, and for
any default or carelessness in this regard tenant shall be liable for all
injuries sustained by other tenants or occupants of the Building or Landlord. On
multiple-tenancy floors, all tenants will keep the doors to the Building
corridors closed at all times except for ingress and egress.

21. Smoking is not permitted in hallway corridors, stairwells, elevators,
restrooms, lobby areas, or any interior common areas within the Building.
Additionally, outdoor smoking is not permitted within twenty (20) fee of any
entrance to the Building. Tenants may smoke in their leased suites, provided
ventilation systems servicing their respective suites can be sufficiently
modified to prevent smoke and/or smoking odors from escaping into common areas,
hallway corridors, and plenum areas in which air distribution ducts are located.
Tenants must additionally install self-circulating air purifiers in each room
within their suites in which they desire to smoke. The costs of all such
air-quality equipment and ventilation improvements shall be borne entirely by
the Tenants desiring to smoke in their suites.

If smoke or smoking odors are intrusive or objectionable to any other Tenant on
a floor in which a smoking Tenant is located, the smoking Tenant shall bear full
responsibility for curing the objectionable condition within twenty (20) days
after receiving written notice that such a condition exists. If the smoking
Tenant is thereafter unable to rectify the intrusive or objectionable condition,
then it shall be required to immediately cease smoking in its suite for the
duration of its tenancy in the Building. Smoking Tenants are not entitled to
reimbursement or offset of any kind for the cost of air-quality equipment or
ventilation improvements.

<PAGE>

                                    EXHIBIT D

                                   WORK LETTER

In all respects, Tenant accepts the Premises in their present condition, as is,
with all faults, as being suitable for use and occupancy by Tenant in accordance
with this Lease. Landlord does not make any representation or warranty, express
or implied, as to the condition of the Premises or suitability of the Premises
for the uses to which Tenant intends to put the Premises.

<PAGE>

                                    EXHIBIT E

                          LEGAL DESCRIPTION OF PROPERTY

BEING a tract or parcel of land out of the D.W. FISHER SURVEY, Abstract No. 482,
Dallas County, Texas, said tract being all of that tract recorded as the 15851
DALLAS NORTH PARKWAY ADDITION, an Addition to the City of Addison, as recorded
in Volume 85021, Page 1686, Map Records, Dallas County, Texas, except that
portion thereof conveyed by The Young Companies IV to the Texas Turnpike
Authority for right of way for the Dallas North Tollway as recorded in Volume
86134, Page 435, Deed Records, Dallas County, Texas, said 4.022 acre tract of
land being more particularly described as follows:

BEGINNING at a 1/2 inch iron rod with cap set in the south right of way line of
Airport Parkway (55 feet wide) said point being at the intersection of said line
of Airport Parkway with the west right of way line of the Dallas North Tollway
as defined by said conveyance by The Young Companies IV to the Texas Turnpike
Authority, said point being North 89 degrees 37 minutes 15 seconds West, a
distance of 92.70 feet along said line of Airport Parkway from the northeast
corner of said 15851 Dallas North Parkway Addition;

THENCE South 40 degrees 26 minutes 12 seconds East, with said west right of way
line of the Dallas North Tollway (a Variable width right of way), a distance of
23.50 feet to a 1/2 inch iron rod with cap set at an angle point;

THENCE South 08 degrees 41 minutes 31 seconds West, continuing with said line of
the Dallas North Tollway, a distance of 53.20 feet to a 1/2 inch iron rod with
cap set at the beginning of a curve to the left, the center of which bears South
81 degrees 18 minutes 29 seconds East, a distance of 1283.24 feet from said
point;

THENCE in a southerly direction continuing with said line of said Dallas North
Tollway, through a central angle of 07 degrees 42 minutes 30 seconds, an arc
distance of 172.64 feet to a 1/2 inch iron rod with cap set at the end of said
curve;

THENCE South 00 degrees 59 minutes 01 seconds West, continuing with said line of
the Dallas North Tollway a distance of 117.56 feet to a 1/2 inch iron rod with
cap set in the south line of said 15851 Dallas North Parkway Addition;

THENCE North 89 degrees 37 minutes 15 seconds West, with the south line of said
15851 Dallas North Parkway Addition and with the north line of a tract of land
conveyed to Opubco Resources, Inc. by deed recorded in Volume 78070, Page 3638,
Deed Records, Dallas County, Texas, a distance of 477.99 feet to a 1/2 inch iron
rod with cap found for corner, said point being the southeast corner of a tract
of land conveyed to Chaney and Hope, Inc., by deed recorded in Volume 78194,
Page 1741, Deed Records, Dallas County, Texas;

THENCE North 00 degrees 19 minutes 15 seconds West, with the west line of said
15851 Dallas North Parkway Addition, and with the east line of said Chaney and
Hope, Inc. tract, a distance of 360.00 feet to a 1/2 inch iron rod with cap
found for corner in the south line of Airport Parkway;

THENCE South 89 degrees 37 minutes 15 seconds East, with said line of Airport
Parkway a distance of 489.38 feet to the POINT OF BEGINNING and CONTAINING
175,196 square feet or 4.022 acres of land, more or less.

<PAGE>

                                    EXHIBIT F

                                 RENEWAL OPTION

         Provided that no event has ever occurred under any term or provision
contained in this Lease and no condition exists which with the passage of time
or the giving of notice or both would constitute an event of default pursuant to
this Lease and provided that Tenant has continuously occupied the Premises for
the Permitted Use during the Lease Term, Tenant (but not any assignee or
subtenant) shall have the right and option (the "Renewal Option") to renew this
Lease, by written notice delivered to Landlord no later than six (6) months
prior to the expiration of the initial Lease Term, for a period of thirty six
(36) months (Renewal Term), at the then Prevailing Market rates and under the
same terms, conditions, and covenants contained in the Lease, except that (a) no
abatements or other concessions, if any, applicable to the initial Lease Term
shall apply to the Renewal Term; (b) Tenant shall have no option to renew this
Lease beyond the expiration of the Renewal Term; and (c) all leasehold
improvements within the Premises shall be provided in their then existing
condition (on an "as is" basis) at the time the Renewal Term commences. Failure
by Tenant to notify Landlord in writing of Tenant's election to exercise the
Renewal Option herein granted within the time limits set forth for such exercise
shall constitute a waiver of such Renewal Option. In the event Tenant elects to
exercise the Renewal Option as set forth above, Landlord shall, within twenty
(20) days thereafter, notify Tenant in writing of the proposed rental for the
Renewal Term (the "Proposed Renewal Rental"). Tenant shall within twenty (20)
days following delivery of the Proposed Renewal Rental by Landlord notify
Landlord in writing of the acceptance or rejection of the Proposed Renewal
Rental. If Tenant accepts Landlord's proposal, then the Proposed Renewal Rental
shall be the rental rate in effect during the Renewal Term. Failure of Tenant to
respond in writing during the aforementioned twenty (20) day period shall be
deemed an acceptance by Tenant of the Proposed Renewal Rental. Should Tenant
reject Landlord's Proposed Renewal Rental during such twenty (20) day period,
then Landlord and Tenant shall negotiate during the thirty (30) day period
commencing upon Tenant's rejection of Landlord's Proposed Renewal Rental to
determine the rental for the Renewal Term. In the event Landlord and Tenant are
unable to agree to a rental for the Renewal Term during said thirty (30) day
period, then the Renewal Option shall terminate and be null and void and the
Lease shall, pursuant to its terms and provisions, terminate at the end of the
original Lease Term.

         Upon exercise of the Renewal Option by Tenant and subject to the
conditions set forth hereinabove, the Lease shall be extended for the period of
such Renewal Term without the necessity of the execution of any further
instrument or document, although if requested by either party, Landlord and
Tenant shall enter into a written agreement modifying and supplementing the
Lease in accordance with the provisions hereof. Any termination of the Lease
during the initial lease Term shall terminate all renewal rights hereunder. The
renewal rights of Tenant hereunder shall not be severable from the Lease, nor
may such rights be assigned or otherwise conveyed in connection with any
permitted assignment of the Lease. Landlord's consent to any assignment of the
Lease shall not be construed as allowing an assignment of such rights to any
assignee.<PAGE>

Exhibit 10.4          Employment Agreement with C.J. Comu

                              EMPLOYMENT AGREEMENT
                              --------------------

This Agreement is made by and between HUMITECH INC, a Nevada Corporation (the
"Corporation") and C.J. Comu (the "Executive") effective the 1st day of October
2001.

WHEREAS, The Corporation is the holding company that's business of manufacturing
and marketing of Humidity control technology, WHEREAS, The Executive has
considerable experience in the management of a successful businesses, WHEREAS,
The Corporation desires to hire Executive as Chief Executive Officer of the
Company. NOW, THEREFORE, in consideration of the promises and of the mutual
covenants and agreements contained in this Agreement, the parties hereby agree
as follows:

1.       EMPLOYMENT SCOPE AND AUTHORITY. The Corporation hereby employs the
         Executive and Executive accepts employment as Chief Executive Officer
         of the Corporation, The Executive shall report and be responsible to
         the Corporation's Board of Directors. The management powers shall be
         superior to all other officers or employees of the Corporation.
         Executive shall become and remain a Director of the Corporation during
         the term of this agreement.
2.       TERM. The initial term of the Agreement shall be for ten (10) years
         from the date the Agreement is signed by all of the parties.
3.       CONTINUED TERM. The Executive Committee of the Board of Directors,
         after the initial term of the Agreement has expired, may extend and
         renew this Agreement for additional ten (10) year terms.
4.       DUTIES. The Executive shall serve as Chief Executive Officer of the
         Corporation and shall have such duties, responsibilities and authority
         as is customary to such position and such other duties,
         responsibilities as may from time to time be assigned by the Board of
         Directors of the Corporation.
5.       TIME, ABILITY AND ATTENTION. The Executive shall devote substantially
         all of his working time, ability and attention to the business of the
         Corporation. Corporation recognizes that the Executive any have other
         business interest, to which he may devote a reasonable amount of time,
         provided such do not conflict with the conduct of the business affairs
         of the Corporation.
6.       PLACE OF PERFORMANCE. The Executive shall maintain his office at the
         principal Executive offices of the Corporation, subject to required
         travel on behalf of the Corporation.
7.       COMPENSATION. The Corporation shall pay the Executive the salary,
         reimbursement of expenses and provide the benefits as specified below.
         (a)      SALARY. The Corporation shall pay the Executive a salary at an
                  annual rate of $250,000 commencing on the effective date
                  hereof, payable bimonthly or otherwise in accordance with the
                  Corporation payroll practices for all employees;
         (b)      INCENTIVE BONUS. As a further inducement to accept the
                  position with the Corporation, during the term of this
                  Agreement and extensions thereof, Corporation shall pay to
                  Executive an annual bonus to be determined in good faith by
                  the Board of Directors. The Board of Directors if the
                  Corporation shall, within six (6) months of the date of this
                  Agreement, structure, institute and establish an incentive
                  bonus program specifying how and when bonuses are to paid
                  pursuant to this paragraph.

<PAGE>

         (c)      BENEFITS. Executive shall be entitled to participate in the
                  Corporation's employee benefit programs in effect from time to
                  time for employees at comparable levels of responsibility.
                  Participation will be in accordance with any applicable
                  policies adopted by the Board of Directors. Executive shall be
                  entitled to vacations, absences for illness. And to similar
                  benefits of employment to the extent such benefits are
                  generally offered to employees of the Corporation at a
                  comparable level of responsibility, subject to the policies
                  and procedures adopted by the Board of Directors.
         (d)      EXPENSES. Subject to the policies and procedures as may be
                  adopted by the Corporation's Board of Directors, Executive
                  shall be entitled to reimbursement for auto, insurance,
                  travel, entertainment and other expenses actually incurred on
                  behalf of Corporation (upon presentation of reasonable
                  evidence thereof) to the extent such expenses are incurred in
                  connection with direct activities of the Corporation, and to
                  the extent similar reimbursements are generally available to
                  employees of the Corporation at a comparable level of
                  responsibility.
         (e)      SERVICES. The Corporation shall furnish Executive office
                  space, personnel and such other facilities and services as
                  reasonably required for Executive to perform the duties of
                  Chief Executive Officer of the Corporation.
8.       TERMINATION BY CORPORATION. This Agreement, and the employment of
         Executive, hereunder, shall terminate immediately upon the occurrence
         of any one of the following events:
         (a)      DEATH. Upon the death of Executive.
         (b)      DISABILITY. The Executive becomes incapacitated due to
                  physical or mental illness and Executive shall have been
                  absent from employment on a full-time basis for one hundred
                  fifty (150) consecutive days, and fails to return to perform
                  the duties assigned by the Corporation on a full-time basis
                  within thirty (30) days after delivery of written notice of
                  termination of the Agreement.
         (c)      AGREEMENT. The mutual written agreement of the Corporation and
                  the Executive.
         (d)      TERM. The expiration of the term, as extended, of this
                  Agreement
         (e)      FOR CAUSE. (i) Willful, intentional and continued failure to
                  perform the duties of Chief Executive Officer of the
                  Corporation, except disability, for more than thirty (30) days
                  after delivery of written demand by the Corporation for
                  performance which shall specify the manner and means which the
                  Corporation believes that the Executive is not performing the
                  duties of Chief Executive Officer, (ii) the conviction of the
                  Executive of a criminal act of moral turpitude, have or liable
                  to have an adverse affect on the Corporation, its business,
                  reputation or good will. For purposes of this paragraph, no
                  act, or failure to act, on the Executive's part shall be
                  considered "willful" or "intentional" unless done, omitted to
                  be done, knowingly, in bad faith, and without reasonable

<PAGE>

                  belief that such action or omission was in the best interest
                  of the Corporation. The Executive shall not be terminated for
                  cause by the Corporation without first having received the
                  opportunity, together with legal counsel, to be heard before
                  the Board of Directors and delivery of written notice
                  specifying the provisions of this Agreement and the facts and
                  circumstances relied upon as basis for termination and a
                  written finding of facts and good faith opinion of the Board
                  of Directors that the Executive violated clause (i) and/or
                  (ii) of this paragraph.
9.       TERMINATION BY EXECUTIVE. This Agreement may be terminated by the
         Executive upon the occurrence of any one of the following events:
         (a)      DISABILITY. In the event the Executive's health impairs the
                  performance of the duties of President and such is hazardous
                  to Executive's physical or mental health or life, provided a
                  written statement form a qualified physician is delivered to
                  the Board of Directors reasonably describing such impairment.
         (b)      GOOD CAUSE. (i) the Board of Directors fails to reelect
                  Executive as President and Director of the Company or removes
                  Executive from such position or position, (ii) the Board of
                  Directors shall fail to vest the powers and authority of Chief
                  Executive Officer, (iii) the Board of Directors shall fail to
                  comply with any material provision of the Agreement which is
                  not cured within ten (10) days of delivery of written notice
                  to the Board of Directors; or, (iv) any purported termination
                  by Corporation not in compliance with the requirements of
                  paragraph 8 (e).
10.      EXECUTIVE COMPENSATION UPON TERMINATION. The Corporation shall pay the
         Executive upon the event of termination the compensation set forth
         below:
         (a)      DEATH. The corporation shall continue the salary for a period
                  of twelve (12) months from and including the month of death
                  and pay such in accordance with the payroll policies of the
                  Corporation to the representative of the deceased Executive's
                  estate.
         (b)      DISABILITY. The Corporation shall continue the salary for a
                  period of six (6) months after this agreement is terminated
                  pursuant to paragraph 8 (b), provided the salary payments may
                  be reduced by the amount of payment received by the Executive
                  under disability benefits plans of the Company, if any.
         (c)      BREACH OF AGREEMENT. In the event this Agreement is terminated
                  pursuant to paragraph 9 (b) the Corporation shall pay
                  Executive (i) full salary through Date of Termination at the
                  annual rate then in effect at the time Notice of Termination,
                  the Corporation shall pay as severance pay to Executive, the
                  greater of one million dollars ($1,000,000) or an amount equal
                  to two times the salary remaining unpaid under the term of
                  this agreement or two times the amount equal to the annual
                  salary in effect at the Date of Termination, payable in one
                  lump sum on or before five (5) business days after the Date of
                  Termination; and (iii) if the termination arises out of a
                  breach by the Company of this agreement, the Corporation shall
                  pay all other damages for loss of benefits, legal expenses
                  incurred and costs of court. In the event this Agreement is
                  terminated pursuant to paragraph 8(e) the Corporation shall be
                  obligated to pay Executive any salary due to the Date of
                  Termination.

<PAGE>

         (d)      OPTIONAL SEVERANCE PAYMENT. Executive upon the event of the
                  Corporation's obligation to pay severance, may in Executive's
                  sole discretion and option elect to accept a number of shares
                  of registered stock of the Corporation determined by dividing
                  the severance amount due by $1.00 which number of shares when
                  delivered shall be in full payment and satisfaction of the
                  Corporation's obligation to Executive.
         (e)      CONTINUATION OF BENEFITS. Except for termination for Cause,
                  the Corporation shall maintain in full force and effect, for
                  the benefit of the Executive for twelve (12) months, all
                  employee benefits, plans and programs in which Executive was
                  entitled to participate and did participate immediately prior
                  to the Corporation shall terminate all employee benefits,
                  plans and programs in which Executive was entitled to
                  participate and did participate immediately prior to the Date
                  of Termination.
         (f)      MITIGATION. The Executive shall not be required to mitigate
                  the amount of any payment provided under this paragraph 10 by
                  seeking other employment or otherwise.
11.      NON-COMPETITION. Executive expressly agrees that while this agreement
         is in effect, and, except for termination for Good Cause, for a period
         of one (1) years following the termination of this Agreement, Executive
         will not directly or indirectly, as an employee, agent, proprietor,
         partner, broker, stockholder, officer, director, or otherwise, render
         any services to, on Executive's own behalf or on behalf of any other
         person or entity, engage in as an employee or owner of any competitive
         business or organization located within a 100 mile radius of the
         Counties of Dallas, Tarrant, Denton, Collin, Rockwell, Texas or any
         other county in any state in which the Corporation then maintains an
         office that would compete directly or indirectly with Corporation's
         Business, without prior written consent of Corporation. The term
         "competitive business" shall include but shall not be limited to any
         business that manufactures and markets commercial air purification
         technology. Executive further expressly agrees that Executive will not
         use for Executives' own benefit or disclose to any person any
         information, including confidential information, which is obtained or
         learned while acting as Executive, without prior written consent of the
         Corporation. The agreements contained in this paragraph on the part of
         Executive shall be construed as an integral part of an enforceable
         agreement and the agreements contained herein were made at the time
         this agreement was consummated by the parties. The Executive
         acknowledges and agrees that the non-competition restrictions contained
         herein are fair and reasonable as to geographical area, length of time
         and scope of activity restrained. The existence of any claim or cause
         of action against Executive by the Corporation, whether predicated on
         this Agreement or otherwise, shall not constitute a defense to the
         enforcement by the Corporation of the agreements contained in this
         paragraph.
12.      ADMINISTRATIVE PROVISIONS. The terms of this Agreement shall be
         administered pursuant to the following provisions:
         (a)      DEFINITION. "Date of Termination" shall mean (i) the date of
                  death of Executive, (ii) thirty (30) days after notice of
                  termination is given for disability, (iii) the date specified
                  in the notice of termination for cause or good cause;
                  provided, if within thirty (30) days after delivery of a
                  notice of termination the person receiving such notice
                  notifies the other in writing that a dispute exists, the Date
                  of Termination shall be the date he dispute is finally
                  determined by mutual agreement or otherwise.

<PAGE>

         (b)      PARTIES BOUND. This Agreement shall be binding on and inure to
                  the benefit of the parties and their respective heirs,
                  executors, administrators. Legal representatives, successors
                  and assigns.
         (c)      ASSIGNMENT. Executive shall have no right to transfer or
                  assign any interest in this Agreement without the prior
                  written consent of the Corporation.
         (d)      TIME LIMITS. Time is of the essence in this Agreement; and all
                  time limits shall be strictly construed and rigidly enforce.
         (e)      NO WAIVER. A failure or delay in the enforcement of the rights
                  detailed in this Agreement by Corporation shall not constitute
                  a waiver of those rights or be considered a basis for
                  estoppel. Corporation may exercise its rights under this
                  Agreement despite any delay or failure to enforce those
                  rights.
         (f)      DISPUTE OR CONTEST. In the unlikely event that a dispute
                  occurs or an action in law or equity arises out of the
                  operation, construction, or interpretation of this Agreement,
                  the prevailing party shall be entitled, in addition to any
                  other relief granted to reasonable expenses for attorneys'
                  fees and costs incurred by such party in the action.
         (g)      PARAGRAPH HEADINGS. The paragraph headings used in this
                  Agreement are descriptive only and shall have no legal force
                  or effect whatever.
         (h)      TEXAS LAW. This Agreement shall be subject to and governed by
                  the laws of the State of Texas. Any and all obligations or
                  payments are due and payable in Dallas County, Texas.
         (i)      SEVERABILITY. If any provision of this Agreement shall, for
                  any reason, be hold violative of any applicable law, and so
                  much of the Agreement is held to be unenforceable, then the
                  invalidity of such a specific provision of this Agreement
                  shall not be deemed to invalidate any other provisions of this
                  Agreement, which other provisions shall remain in full force
                  and effect unless removal of the invalid provisions destroy
                  the legitimate purposes of this Agreement, in which event this
                  Agreement shall be canceled.
         (j)      MODIFICATION OF AGREEMENT. This Agreement represents the
                  entire Agreement by and between the parties, except as
                  otherwise provided in this Agreement, and it may not be
                  changed except by written amendment duly executed by all
                  parties.
         (k)      NOTICES. All notices and communications pursuant to this
                  Agreement shall be in writing and delivered when sent by
                  United States certified mail, return receipt requested,
                  postage prepaid, addressed as follows:

         If to Executive:    C.J. Comu
                             15851 Dallas Parkway, Suite 410
                             Addison, TX, 75001

         If to Corporation:  Humitech Inc.
                             15851 Dallas Parkway, Suite 410
                             Addison, TX, 75001

         Or such other address any party may have furnished to the other in
         writing upon receipt by such party.

<PAGE>

         SIGNED, accepted and agreed to the first date stated above, by the
undersigned parties.

         CORPORATION:
         HUMITECH INC:

         /s/ David Marlett
         ------------------------------------
         David Marlett, CFO & General Counsel

         EXECUTIVE:

         /s/ C.J. Comu
         ------------------------------------
         C.J. Comu, Chief Executive Officer

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