Document:

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                                                                EXHIBIT 10.30

                         REGISTRATION RIGHTS AGREEMENT

          This Registration Rights Agreement (this "Agreement") is made and
entered into as of April 2, 2002, by and among Analytical Surveys, Inc., a
Colorado corporation (the "Company"), and the purchasers listed on Schedule I
hereto (the "Purchasers").

          This Agreement is being entered into pursuant to the Note and Warrant
Purchase Agreement, dated as of March 21, 2002 among the Company and the
Purchasers (the "Purchase Agreement").

          The Company and the Purchasers hereby agree as follows:

     1.   Definitions.

          Capitalized terms used and not otherwise defined herein shall have the
meanings given such terms in the Purchase Agreement. As used in this Agreement,
the following terms shall have the following meanings:

          "Advice" shall have meaning set forth in Section 3(m).

          "Affiliate" means, with respect to any Person, any other Person that
directly or indirectly controls or is controlled by or under common control with
such Person. For the purposes of this definition, "control," when used with
respect to any Person, means the possession, direct or indirect, of the power to
direct or cause the direction of the management and policies of such Person,
whether through the ownership of voting securities, by contract or otherwise;
and the terms of "affiliated," "controlling" and "controlled" have meanings
correlative to the foregoing.

          "Board" shall have meaning set forth in Section 3(n).

          "Business Day" means any day except Saturday, Sunday and any day which
shall be a legal holiday or a day on which banking institutions in the state of
New York generally are authorized or required by law or other government actions
to close.

          "Closing Date" means the date of the closing of the purchase and sale
of the Notes and the Warrants pursuant to the Purchase Agreement.

          "Commission" means the Securities and Exchange Commission.

          "Common Stock" means the Company's Common Stock, no par value per
share.

          "Effectiveness Date" means with respect to the Registration Statement
the earlier of the 90th day following the Filing Date and the date which is
within five (5) days of the date on

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which the Commission informs the Company that the Commission (i) will not review
the Registration Statement or (ii) that the Company may request the acceleration
of the effectiveness of the Registration Statement and the Company makes such
request.

          "Effectiveness Period" shall have the meaning set forth in Section 2.

          "Event" shall have the meaning set forth in Section 7(e).

          "Event Date" shall have the meaning set forth in Section 7(e).

          "Exchange Act" means the Securities Exchange Act of 1934, as amended.

          "Filing Date" means the 60th day following the Closing Date.

          "Holder" or "Holders" means the holder or holders, as the case may be,
from time to time of Registrable Securities.

          "Indemnified Party" shall have the meaning set forth in Section 5(c).

          "Indemnifying Party" shall have the meaning set forth in Section 5(c).

          "Losses" shall have the meaning set forth in Section 5(a).

          "Person" means an individual or a corporation, partnership, trust,
incorporated or unincorporated association, joint venture, limited liability
company, joint stock company, government (or an agency or political subdivision
thereof) or other entity of any kind.

          "Proceeding" means an action, claim, suit, investigation or proceeding
(including, without limitation, an investigation or partial proceeding, such as
a deposition), whether commenced or threatened.

          "Prospectus" means the prospectus included in the Registration
Statement (including, without limitation, a prospectus that includes any
information previously omitted from a prospectus filed as part of an effective
registration statement in reliance upon Rule 430A promulgated under the
Securities Act), as amended or supplemented by any prospectus supplement, with
respect to the terms of the offering of any portion of the Registrable
Securities covered by the Registration Statement, and all other amendments and
supplements to the Prospectus, including post-effective amendments, and all
material incorporated by reference in such Prospectus.

          "Registrable Securities" means the shares of Common Stock issuable
upon conversion of the Notes and the shares of Common Stock issuable upon
exercise of the Warrants; provided, however, that Registrable Securities shall
include (but not be limited to) a number of shares of Common Stock equal to no
less than 200% of the maximum number of shares of Common Stock which would be
issuable upon conversion of the Notes and upon exercise of the Warrants,
assuming such conversion and exercise occurred on the Closing Date or the Filing
Date, whichever date would result in the greater number of Registrable
Securities.

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Such registered shares of Common Stock shall be allocated among the Holders pro
rata based on the total number of Registrable Securities issued or issuable as
of each date that a Registration Statement, as amended, relating to the resale
of the Registrable Securities is declared effective by the Commission.
Notwithstanding anything herein contained to the contrary, if the actual number
of shares of Common Stock issuable upon conversion of the Notes and upon
exercise of the Warrants exceeds 200% of the number of shares of Common Stock
issuable upon conversion of the Notes and upon exercise of the Warrants based
upon a computation as at the Closing Date or the Filing Date, the term
"Registrable Securities" shall be deemed to include such additional shares of
Common Stock.

          "Registration Statement" means the registration statements and any
additional registration statements contemplated by Section 2, including (in each
case) the Prospectus, amendments and supplements to such registration statement
or Prospectus, including pre- and post-effective amendments, all exhibits
thereto, and all material incorporated by reference in such registration
statement.

          "Rule 144" means Rule 144 promulgated by the Commission pursuant to
the Securities Act, as such Rule may be amended from time to time, or any
similar rule or regulation hereafter adopted by the Commission having
substantially the same effect as such Rule.

          "Rule 158" means Rule 158 promulgated by the Commission pursuant to
the Securities Act, as such Rule may be amended from time to time, or any
similar rule or regulation hereafter adopted by the Commission having
substantially the same effect as such Rule.

          "Rule 415" means Rule 415 promulgated by the Commission pursuant to
the Securities Act, as such Rule may be amended from time to time, or any
similar rule or regulation hereafter adopted by the Commission having
substantially the same effect as such Rule.

          "Securities Act" means the Securities Act of 1933, as amended.

          "Special Counsel" means any special counsel to the Holders, for which
the Holders will be reimbursed by the Company pursuant to Section 4 hereof and
Section 8.1 of the Purchase Agreement.

     2.   Shelf Registration.

          On or prior to the Filing Date, the Company shall prepare and file
with the Commission a "shelf" Registration Statement covering all Registrable
Securities for an offering to be made on a continuous basis pursuant to Rule
415. The Registration Statement shall be on Form S-1. The Company shall (i) not
permit any securities other than the Registrable Securities to be included in
the Registration Statement and (ii) use its best efforts to cause the
Registration Statement to be declared effective under the Securities Act as
promptly as possible after the filing thereof, but in any event prior to the
date that is thirty (30) days following the Effectiveness Date, and to keep such
Registration Statement continuously effective under the Securities Act until
such date as is the earlier of (x) the date when all Registrable Securities
covered by such Registration Statement have been sold or (y) the date on which
the Registrable

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Securities may be sold without any restriction pursuant to Rule 144 as
determined by the counsel to the Company pursuant to a written opinion letter,
addressed to the Company's transfer agent to such effect (the "Effectiveness
Period"). If at any time and for any reason, an additional Registration
Statement is required to be filed because at such time the actual number of
shares of Common Stock into which the Notes are convertible and the Warrants are
exercisable exceeds one hundred twenty-five percent (125%) of the number of
shares of Registrable Securities remaining under the Registration Statement, the
Company shall have twenty (20) Business Days to file such additional
Registration Statement, and the Company shall use its best efforts to cause such
additional Registration Statement to be declared effective by the Commission as
soon as possible, but in no event later than thirty (30) days after filing. If
at such time in the reasonable opinion of the Purchasers there is not or will
not be a sufficient number of Registrable Securities to be issued upon
conversion of the principal amount of the Notes then outstanding, or upon the
exercise of the Warrants then outstanding, the Purchasers shall be entitled to
demand that the Company prepare and file an additional Registration Statement.

     3.   Registration Procedures.

          In connection with the Company's registration obligations hereunder,
the Company shall:

          (a) Prepare and file with the Commission on or prior to the Filing
Date, a Registration Statement on Form S-1 in accordance with the method or
methods of distribution thereof as specified by the Holders (except if otherwise
directed by the Holders), and cause the Registration Statement to become
effective and remain effective as provided herein; provided, however, that not
less than five (5) Business Days prior to the filing of the Registration
Statement or any related Prospectus or any amendment or supplement thereto
(including any document that would be incorporated therein by reference), the
Company shall (i) furnish to the Holders and any Special Counsel, copies of all
such documents proposed to be filed, which documents (other than those
incorporated by reference) will be subject to the review of such Holders and
such Special Counsel, and (ii) cause its officers and directors, counsel and
independent certified public accountants to respond to such inquiries as shall
be necessary, in the reasonable opinion of counsel to such Holders, to conduct a
reasonable investigation within the meaning of the Securities Act. The Company
shall not file the Registration Statement or any such Prospectus or any
amendments or supplements thereto to which the Holders of a majority of the
Registrable Securities or any Special Counsel shall reasonably object in writing
within three (3) Business Days of their receipt thereof.

          (b) (i) Prepare and file with the Commission such amendments,
including post-effective amendments, to the Registration Statement as may be
necessary to keep the Registration Statement continuously effective as to the
applicable Registrable Securities for the Effectiveness Period and prepare and
file with the Commission such additional Registration Statements in order to
register for resale under the Securities Act all of the Registrable Securities;
(ii) cause the related Prospectus to be amended or supplemented by any required
Prospectus supplement, and as so supplemented or amended to be filed pursuant to
Rule 424 (or any similar provisions then in force) promulgated under the
Securities Act; (iii) respond as promptly as possible to any comments received
from the Commission with respect to the

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Registration Statement or any amendment thereto and as promptly as possible
provide the Holders true and complete copies of all correspondence from and to
the Commission relating to the Registration Statement; and (iv) comply in all
material respects with the provisions of the Securities Act and the Exchange Act
with respect to the disposition of all Registrable Securities covered by the
Registration Statement during the applicable period in accordance with the
intended methods of disposition by the Holders thereof set forth in the
Registration Statement as so amended or in such Prospectus as so supplemented.

          (c) Notify the Holders of Registrable Securities to be sold and any
Special Counsel as promptly as possible (and, in the case of (i)(A) below, not
less than five (5) days prior to such filing) and (if requested by any such
Person) confirm such notice in writing no later than one (1) Business Day
following the day (i)(A) when a Prospectus or any Prospectus supplement or
post-effective amendment to the Registration Statement is proposed to be filed;
(B) when the Commission notifies the Company whether there will be a "review" of
such Registration Statement and whenever the Commission comments in writing on
such Registration Statement and (C) with respect to the Registration Statement
or any post-effective amendment, when the same has become effective; (ii) of any
request by the Commission or any other Federal or state governmental authority
for amendments or supplements to the Registration Statement or Prospectus or for
additional information; (iii) of the issuance by the Commission of any stop
order suspending the effectiveness of the Registration Statement covering any or
all of the Registrable Securities or the initiation of any Proceedings for that
purpose; (iv) if at any time any of the representations and warranties of the
Company contained in any agreement contemplated hereby ceases to be true and
correct in all material respects; (v) of the receipt by the Company of any
notification with respect to the suspension of the qualification or exemption
from qualification of any of the Registrable Securities for sale in any
jurisdiction, or the initiation or threatening of any Proceeding for such
purpose; and (vi) of the occurrence of any event that makes any statement made
in the Registration Statement or Prospectus or any document incorporated or
deemed to be incorporated therein by reference untrue in any material respect or
that requires any revisions to the Registration Statement, Prospectus or other
documents so that, in the case of the Registration Statement or the Prospectus,
as the case may be, it will not contain any untrue statement of a material fact
or omit to state any material fact required to be stated therein or necessary to
make the statements therein, in the light of the circumstances under which they
were made, not misleading.

          (d) Use its best efforts to avoid the issuance of, or, if issued,
obtain the withdrawal of, (i) any order suspending the effectiveness of the
Registration Statement or (ii) any suspension of the qualification (or exemption
from qualification) of any of the Registrable Securities for sale in any
jurisdiction, at the earliest practicable moment.

          (e) If requested by the Holders of a majority in interest of the
Registrable Securities, (i) promptly incorporate in a Prospectus supplement or
post-effective amendment to the Registration Statement such information as the
Company reasonably agrees should be included therein and (ii) make all required
filings of such Prospectus supplement or such post-effective amendment as soon
as practicable after the Company has received notification of the matters to be
incorporated in such Prospectus supplement or post-effective amendment.

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          (f) Furnish to each Holder and any Special Counsel, without charge, at
least one conformed copy of each Registration Statement and each amendment
thereto, including financial statements and schedules, all documents
incorporated or deemed to be incorporated therein by reference, and all exhibits
to the extent requested by such Person (including those previously furnished or
incorporated by reference) promptly after the filing of such documents with the
Commission.

          (g) Promptly deliver to each Holder and any Special Counsel, without
charge, as many copies of the Prospectus or Prospectuses (including each form of
prospectus) and each amendment or supplement thereto as such Persons may
reasonably request; and the Company hereby consents to the use of such
Prospectus and each amendment or supplement thereto by each of the selling
Holders in connection with the offering and sale of the Registrable Securities
covered by such Prospectus and any amendment or supplement thereto.

          (h) Prior to any public offering of Registrable Securities, use its
best efforts to register or qualify or cooperate with the selling Holders and
any Special Counsel in connection with the registration or qualification (or
exemption from such registration or qualification) of such Registrable
Securities for offer and sale under the securities or Blue Sky laws of such
jurisdictions within the United States as any Holder requests in writing, to
keep each such registration or qualification (or exemption therefrom) effective
during the Effectiveness Period and to do any and all other acts or things
necessary or advisable to enable the disposition in such jurisdictions of the
Registrable Securities covered by a Registration Statement; provided, however,
that the Company shall not be required to qualify generally to do business in
any jurisdiction where it is not then so qualified or to take any action that
would subject it to general service of process in any such jurisdiction where it
is not then so subject or subject the Company to any material tax in any such
jurisdiction where it is not then so subject.

          (i) Cooperate with the Holders to facilitate the timely preparation
and delivery of certificates representing Registrable Securities to be sold
pursuant to a Registration Statement, which certificates shall be free of all
restrictive legends, and to enable such Registrable Securities to be in such
denominations and registered in such names as any Holder may request at least
two (2) Business Days prior to any sale of Registrable Securities.

          (j) Upon the occurrence of any event contemplated by Section 3(c)(vi),
as promptly as possible, prepare a supplement or amendment, including a
post-effective amendment, to the Registration Statement or a supplement to the
related Prospectus or any document incorporated or deemed to be incorporated
therein by reference, and file any other required document so that, as
thereafter delivered, neither the Registration Statement nor such Prospectus
will contain an untrue statement of a material fact or omit to state a material
fact required to be stated therein or necessary to make the statements therein,
in the light of the circumstances under which they were made, not misleading.

          (k) Use its best efforts to cause all Registrable Securities relating
to such Registration Statement to be listed on the Nasdaq SmallCap Market,
Nasdaq National Market, American Stock Exchange, the OTC Bulletin Board and any
other securities exchange, quotation

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system or market, if any, on which similar securities issued by the Company are
then listed as and when required pursuant to the Purchase Agreement.

          (l) Comply in all material respects with all applicable rules and
regulations of the Commission and make generally available to its security
holders earning statements satisfying the provisions of Section 11(a) of the
Securities Act and Rule 158 not later than 45 days after the end of any 12-month
period (or 90 days after the end of any 12-month period if such period is a
fiscal year) commencing on the first day of the first fiscal quarter of the
Company after the effective date of the Registration Statement, which statement
shall conform to the requirements of Rule 158.

          (m) If the Registration Statement refers to any Holder by name or
otherwise as the holder of any securities of the Company, then such Holder shall
have the right to require (if such reference to such Holder by name or otherwise
is not required by the Securities Act or any similar federal statute then in
force) the deletion of the reference to such Holder in any amendment or
supplement to the Registration Statement filed or prepared subsequent to the
time that such reference ceases to be required.

          Each Holder covenants and agrees that (i) it will not sell any
Registrable Securities under the Registration Statement until it has received
copies of the Prospectus as then amended or supplemented as contemplated in
Section 3(g) and notice from the Company that such Registration Statement and
any post-effective amendments thereto have become effective as contemplated by
Section 3(c), (ii) it and its officers, directors or Affiliates, if any, will
comply with the prospectus delivery requirements of the Securities Act as
applicable to them in connection with sales of Registrable Securities pursuant
to the Registration Statement and (iii) it will furnish to the Company
information regarding such Holder and the distribution of such Registrable
Securities as is required by law to be disclosed in the Registration Statement,
and the Company may exclude from such registration the Registrable Securities of
any such Holder who unreasonably fails to furnish such information within a
reasonable time after receiving such request.

          Each Holder agrees by its acquisition of such Registrable Securities
that, upon receipt of a notice from the Company of the occurrence of any event
of the kind described in Section 3(c)(ii), 3(c)(iii), 3(c)(iv), 3(c)(v) or
3(c)(vi), such Holder will forthwith discontinue disposition of such Registrable
Securities under the Registration Statement until such Holder's receipt of the
copies of the supplemented Prospectus and/or amended Registration Statement
contemplated by Section 3(j), or until it is advised in writing (the "Advice")
by the Company that the use of the applicable Prospectus may be resumed, and, in
either case, has received copies of any additional or supplemental filings that
are incorporated or deemed to be incorporated by reference in such Prospectus or
Registration Statement.

          (n) If (i) there is material non-public information regarding the
Company which the Company's Board of Directors (the "Board") reasonably
determines not to be in the Company's best interest to disclose and which the
Company is not otherwise required to disclose, or (ii) there is a significant
business opportunity (including, but not limited to, the acquisition or
disposition of assets (other than in the ordinary course of business) or any
merger, consolidation,

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tender offer or other similar transaction) available to the Company which the
Board reasonably determines not to be in the Company's best interest to
disclose, then the Company may postpone or suspend filing or effectiveness of a
registration statement for a period not to exceed 20 consecutive days, provided
that the Company may not postpone or suspend its obligation under this Section
3(n) for more than 45 days in the aggregate during any 12 month period;
provided, however, that no such postponement or suspension shall be permitted
for consecutive 20 day periods, arising out of the same set of facts,
circumstances or transactions.

     4.   Registration Expenses.

          All fees and expenses incident to the performance of or compliance
with this Agreement by the Company, except as and to the extent specified in
Section 4, shall be borne by the Company whether or not the Registration
Statement is filed or becomes effective and whether or not any Registrable
Securities are sold pursuant to the Registration Statement. The fees and
expenses referred to in the foregoing sentence shall include, without
limitation, (i) all registration and filing fees (including, without limitation,
fees and expenses (A) with respect to filings required to be made with the
Nasdaq SmallCap Market, Nasdaq National Market, the OTC Bulletin Board and each
other securities exchange or market on which Registrable Securities are required
hereunder to be listed, (B) with respect to filings required to be made with the
National Association of Securities Dealers, Inc. and the NASD Regulation, Inc.
and (C) in compliance with state securities or Blue Sky laws (including, without
limitation, fees and disbursements of counsel for the Holders in connection with
Blue Sky qualifications of the Registrable Securities and determination of the
eligibility of the Registrable Securities for investment under the laws of such
jurisdictions as the Holders of a majority of Registrable Securities may
designate)), (ii) printing expenses (including, without limitation, expenses of
printing certificates for Registrable Securities and of printing prospectuses if
the printing of prospectuses is requested by the holders of a majority of the
Registrable Securities included in the Registration Statement), (iii) messenger,
telephone and delivery expenses, (iv) fees and disbursements of counsel for the
Company and Special Counsel for the Holders, (v) Securities Act liability
insurance, if the Company so desires such insurance, and (vi) fees and expenses
of all other Persons retained by the Company in connection with the consummation
of the transactions contemplated by this Agreement, including, without
limitation, he Company's independent public accountants (including the expenses
of any comfort letters or costs associated with the delivery by independent
public accountants of a comfort letter or comfort letters). In addition, the
Company shall be responsible for all of its internal expenses incurred in
connection with the consummation of the transactions contemplated by this
Agreement (including, without limitation, all salaries and expenses of its
officers and employees performing legal or accounting duties), the expense of
any annual audit, the fees and expenses incurred in connection with the listing
of the Registrable Securities on any securities exchange as required hereunder.

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     5.   Indemnification.

          (a) Indemnification by the Company. The Company shall, notwithstanding
any termination of this Agreement, indemnify and hold harmless each Holder, the
officers, directors, agents, brokers (including brokers who offer and sell
Registrable Securities as principal as a result of a pledge or any failure to
perform under a margin call of Common Stock), investment advisors and employees
of each of them, each Person who controls any such Holder (within the meaning of
Section 15 of the Securities Act or Section 20 of the Exchange Act) and the
officers, directors, agents and employees of each such controlling Person, to
the fullest extent permitted by applicable law, from and against any and all
losses, claims, damages, liabilities, costs (including, without limitation,
costs of preparation and attorneys' fees) and expenses (collectively, "Losses"),
as incurred, arising out of or relating to any untrue or alleged untrue
statement of a material fact contained in the Registration Statement, any
Prospectus or any form of prospectus or in any amendment or supplement thereto
or in any preliminary prospectus, or arising out of or relating to any omission
or alleged omission of a material fact required to be stated therein or
necessary to make the statements therein (in the case of any Prospectus or form
of prospectus or supplement thereto, in the light of the circumstances under
which they were made) not misleading, except to the extent, but only to the
extent, that such untrue statements or omissions are based solely upon
information regarding such Holder or such other Indemnified Party furnished in
writing to the Company by such Holder expressly for use therein, which
information was reasonably relied on by the Company for use therein or to the
extent that such information relates to such Holder or such Holder's proposed
method of distribution of Registrable Securities and was reviewed and expressly
approved in writing by such Holder expressly for use in the Registration
Statement, such Prospectus or such form of Prospectus or in any amendment or
supplement thereto. The Company shall notify the Holders promptly of the
institution, threat or assertion of any Proceeding of which the Company is aware
in connection with the transactions contemplated by this Agreement.

          (b) Indemnification by Purchasers. The Purchasers shall, severally and
not jointly, indemnify and hold harmless the Company, the directors, officers,
agents and employees, each Person who controls the Company (within the meaning
of Section 15 of the Securities Act and Section 20 of the Exchange Act), and the
directors, officers, agents or employees of such controlling Persons, to the
fullest extent permitted by applicable law, from and against all Losses (as
determined by a court of competent jurisdiction in a final judgment not subject
to appeal or review), as incurred, arising solely out of or based solely upon
any untrue statement of a material fact contained in the Registration Statement,
any Prospectus, or any form of prospectus, or arising solely out of or based
solely upon any omission of a material fact required to be stated therein or
necessary to make the statements therein (in the case of any Prospectus or form
of prospectus or supplement thereto, in the light of the circumstances under
which they were made) not misleading, to the extent, but only to the extent,
that such untrue statement or omission is contained in any information so
furnished in writing by such Holder or other Indemnified Party to the Company
specifically for inclusion in the Registration Statement or such Prospectus and
that such information was reasonably relied upon by the Company for use in the
Registration Statement, such Prospectus or such form of prospectus or to the
extent that such information relates to such Holder or such Holder's proposed
method of distribution of Registrable Securities and was reviewed and expressly
approved in writing by such Holder expressly for use in the Registration
Statement, such Prospectus or such form of Prospectus.

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          (c) Conduct of Indemnification Proceedings. If any Proceeding shall be
brought or asserted against any Person entitled to indemnity hereunder (an
"Indemnified Party"), such Indemnified Party promptly shall notify the Person
from whom indemnity is sought (the "Indemnifying Party) in writing, and the
Indemnifying Party shall assume the defense thereof, including the employment of
counsel reasonably satisfactory to the Indemnified Party and the payment of all
fees and expenses incurred in connection with defense thereof; provided, that
the failure of any Indemnified Party to give such notice shall not relieve the
Indemnifying Party of its obligations or liabilities pursuant to this Agreement,
except (and only) to the extent that it shall be finally determined by a court
of competent jurisdiction (which determination is not subject to appeal or
further review) that such failure shall have proximately and materially
adversely prejudiced the Indemnifying Party.

          An Indemnified Party shall have the right to employ separate counsel
in any such Proceeding and to participate in the defense thereof, but the fees
and expenses of such counsel shall be at the expense of such Indemnified Party
or Parties unless: (1) the Indemnifying Party has agreed in writing to pay such
fees and expenses; or (2) the Indemnifying Party shall have failed promptly to
assume the defense of such Proceeding and to employ counsel reasonably
satisfactory to such Indemnified Party in any such Proceeding; or (3) the named
parties to any such Proceeding (including any impleaded parties) include both
such Indemnified Party and the Indemnifying Party, and such Indemnified Party
shall have been advised by counsel (which shall be reasonably acceptable to the
Indemnifying Party) that a conflict of interest is likely to exist if the same
counsel were to represent such Indemnified Party and the Indemnifying Party (in
which case, if such Indemnified Party notifies the Indemnifying Party in writing
that it elects to employ separate counsel at the expense of the Indemnifying
Party, the Indemnifying Party shall not have the right to assume the defense
thereof and such counsel shall be at the expense of the Indemnifying Party). The
Indemnifying Party shall not be liable for any settlement of any such Proceeding
effected without its written consent, which consent shall not be unreasonably
withheld or delayed. No Indemnifying Party shall, without the prior written
consent of the Indemnified Party, effect any settlement of any pending
Proceeding in respect of which any Indemnified Party is a party, unless such
settlement includes an unconditional release of such Indemnified Party from all
liability on claims that are the subject matter of such Proceeding.

          All fees and expenses of the Indemnified Party (including reasonable
fees and expenses to the extent incurred in connection with investigating or
preparing to defend such Proceeding in a manner not inconsistent with this
Section) shall be paid to the Indemnified Party, as incurred, within ten (10)
Business Days of written notice thereof to the Indemnifying Party (regardless of
whether it is ultimately determined that an Indemnified Party is not entitled to
indemnification hereunder; provided, that the Indemnifying Party may require
such Indemnified Party to undertake to reimburse all such fees and expenses to
the extent it is finally judicially determined that such Indemnified Party is
not entitled to indemnification hereunder).

          (d) Contribution. If a claim for indemnification under Section 5(a) or
5(b) is unavailable to an Indemnified Party because it is unlawful or because of
a failure or refusal of a governmental authority to enforce such indemnification
in accordance with its terms (by reason of public policy or otherwise), then
each Indemnifying Party, in lieu of indemnifying such Indemnified Party, shall
contribute to the amount paid or payable by such Indemnified Party as a

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result of such Losses, in such proportion as is appropriate to reflect the
relative fault of the Indemnifying Party and Indemnified Party in connection
with the actions, statements or omissions that resulted in such Losses as well
as any other relevant equitable considerations. The relative fault of such
Indemnifying Party and Indemnified Party shall be determined by reference to,
among other things, whether any action in question, including any untrue or
alleged untrue statement of a material fact or omission or alleged omission of a
material fact, has been taken or made by, or relates to information supplied by,
such Indemnifying, Party or Indemnified Party, and the parties' relative intent,
knowledge, access to information and opportunity to correct or prevent such
action, statement or omission. The amount paid or payable by a party as a result
of any Losses shall be deemed to include, subject to the limitations set forth
in Section 5(c), any reasonable attorneys' or other reasonable fees or expenses
incurred by such party in connection with any Proceeding to the extent such
party would have been indemnified for such fees or expenses if the
indemnification provided for in this Section was available to such party in
accordance with its terms.

          The parties hereto agree that it would not be just and equitable if
contribution pursuant to this Section 5(d) were determined by pro rata
allocation or by any other method of allocation that does not take into account
the equitable considerations referred to in the immediately preceding paragraph.
No Person guilty of fraudulent misrepresentation (within the meaning of Section
11(f) of the Securities Act) shall be entitled to contribution from any Person
who was not guilty of such fraudulent misrepresentation.

          The indemnity and contribution agreements contained in this Section
are in addition to any liability that the Indemnifying Parties may have to the
Indemnified Parties

     6.   Rule 144.

          As long as any Holder owns Shares, Conversion Shares, Warrants or
Warrant Shares, the Company covenants to timely file (or obtain extensions in
respect thereof and file within the applicable grace period) all reports
required to be filed by the Company after the date hereof pursuant to Section
13(a) or 15(d) of the Exchange Act and to promptly furnish the Holders with true
and complete copies of all such filings. As long as any Holder owns Shares,
Conversion Shares, Warrants or Warrant Shares, if the Company is not required to
file reports pursuant to Section 13(a) or 15(d) of the Exchange Act, it will
prepare and furnish to the Holders and make publicly available in accordance
with Rule 144(c) promulgated under the Securities Act annual and quarterly
financial statements, together with a discussion and analysis of such financial
statements in form and substance substantially similar to those that would
otherwise be required to be included in reports required by Section 13(a) or
15(d) of the Exchange Act, as well as any other information required thereby, in
the time period that such filings would have been required to have been made
under the Exchange Act. The Company further covenants that it will take such
further action as any Holder may reasonably request, all to the extent required
from time to time to enable such Person to sell Conversion Shares and Warrant
Shares without registration under the Securities Act within the limitation of
the exemptions provided by Rule 144 promulgated under the Securities Act,
including providing any legal opinions relating to such sale pursuant to Rule
144. Upon the request of any Holder, the Company shall deliver to such

                                      -11-
<PAGE>

Holder a written certification of a duly authorized officer as to whether it has
complied with such requirements.

     7.   Miscellaneous.

          (a) Remedies. In the event of a breach by the Company or by a Holder,
of any of their obligations under this Agreement, each Holder or the Company, as
the case may be, in addition to being entitled to exercise all rights granted by
law and under this Agreement, including recovery of damages, will be entitled to
specific performance of its rights under this Agreement. The Company and each
Holder agree that monetary damages would not provide adequate compensation for
any losses incurred by reason of a breach by it of any of the provisions of this
Agreement and hereby further agrees that, in the event of any action for
specific performance in respect of such breach, it shall waive the defense that
a remedy at law would be adequate.

          (b) No Inconsistent Agreements. Neither the Company nor any of its
subsidiaries has, as of the date hereof entered into and currently in effect,
nor shall the Company or any of its subsidiaries, on or after the date of this
Agreement, enter into any agreement with respect to its securities that is
inconsistent with the rights granted to the Holders in this Agreement or
otherwise conflicts with the provisions hereof. Except as disclosed in Schedule
2.1(c) of the Purchase Agreement, neither the Company nor any of its
subsidiaries has previously entered into any agreement currently in effect
granting any registration rights with respect to any of its securities to any
Person. Without limiting the generality of the foregoing, without the written
consent of the Holders of a majority of the then outstanding Registrable
Securities, the Company shall not grant to any Person the right to request the
Company to register any securities of the Company under the Securities Act
unless the rights so granted are subject in all respects to the prior rights in
full of the Holders set forth herein, and are not otherwise in conflict with the
provisions of this Agreement.

          (c) No Piggyback on Registrations. Neither the Company nor any of its
security holders (other than the Holders in such capacity pursuant hereto or as
disclosed in Schedule 2.1(c) of the Purchase Agreement) may include securities
of the Company in the Registration Statement, and the Company shall not after
the date hereof enter into any agreement providing such right to any of its
securityholders, unless the right so granted is subject in all respects to the
prior rights in full of the Holders set forth herein, and is not otherwise in
conflict with the provisions of this Agreement.

          (d) Piggy-Back Registrations. If at any time when there is not an
effective Registration Statement covering (i) Conversion Shares or (ii) Warrant
Shares, the Company shall determine to prepare and file with the Commission a
registration statement relating to an offering for its own account or the
account of others under the Securities Act of any of its equity securities,
other than on Form S-4 or Form S-8 (each as promulgated under the Securities
Act) or their then equivalents relating to equity securities to be issued solely
in connection with any acquisition of any entity or business or equity
securities issuable in connection with stock option or other employee benefit
plans, the Company shall send to each holder of Registrable Securities written
notice of such determination and, if within thirty (30) days after receipt of
such notice,

                                      -12-
<PAGE>

any such holder shall so request in writing, (which request shall specify the
Registrable Securities intended to be disposed of by the Purchasers), the
Company will cause the registration under the Securities Act of all Registrable
Securities which the Company has been so requested to register by the holder, to
the extent requisite to permit the disposition of the Registrable Securities so
to be registered, provided that if at any time after giving written notice of
its intention to register any securities and prior to the effective date of the
registration statement filed in connection with such registration, the Company
shall determine for any reason not to register or to delay registration of such
securities, the Company may, at its election, give written notice of such
determination to such holder and, thereupon, (i) in the case of a determination
not to register, shall be relieved of its obligation to register any Registrable
Securities in connection with such registration (but not from its obligation to
pay expenses in accordance with Section 4 hereof), and (ii) in the case of a
determination to delay registering, shall be permitted to delay registering any
Registrable Securities being registered pursuant to this Section 7(d) for the
same period as the delay in registering such other securities. The Company shall
include in such registration statement all or any part of such Registrable
Securities such holder requests to be registered; provided, however, that the
Company shall not be required to register any Registrable Securities pursuant to
this Section 7(d) that are eligible for sale pursuant to Rule 144(k) of the
Securities Act. In the case of an underwritten public offering, if the managing
underwriter(s) or underwriter(s) should reasonably object to the inclusion of
the Registrable Securities in such registration statement, then if the Company
after consultation with the managing underwriter should reasonably determine
that the inclusion of such Registrable Securities, would materially adversely
affect the offering contemplated in such registration statement, and based on
such determination recommends inclusion in such registration statement of fewer
or none of the Registrable Securities of the Holders, then (x) the number of
Registrable Securities of the Holders included in such registration statement
shall be reduced pro-rata among such Holders (based upon the number of
Registrable Securities requested to be included in the registration), if the
Company after consultation with the underwriter(s) recommends the inclusion of
fewer Registrable Securities, or (y) none of the Registrable Securities of the
Holders shall be included in such registration statement, if the Company after
consultation with the underwriter(s) recommends the inclusion of none of such
Registrable Securities; provided, however, that if Securities are being offered
for the account of other persons or entities as well as the Company, such
reduction shall not represent a greater fraction of the number of Registrable
Securities intended to be offered by the Holders than the fraction of similar
reductions imposed on such other persons or entities (other than the Company).

          (e) Failure to File Registration Statement and Other Events. The
Company and the Purchasers agree that the Holders will suffer damages if the
Registration Statement is not filed on or prior to the date that is thirty (30)
days following the Filing Date and not declared effective by the Commission on
or prior to the date that is thirty (30) days following the Effectiveness Date
and maintained in the manner contemplated herein during the Effectiveness Time
or if certain other events occur. The Company and the Holders further agree that
it would not be feasible to ascertain the extent of such damages with precision.
Accordingly, if (i) the Registration Statement is not filed on or prior to the
date that is thirty (30) days following the Filing Date, or is not declared
effective by the Commission on or prior to the date that is thirty (30) days
following the Effectiveness Date (or in the event an additional Registration
Statement is filed because the actual number of shares of Common Stock into
which the Notes are

                                      -13-
<PAGE>

convertible and the Warrants are exercisable exceeds the number of shares of
Common Stock initially registered is not filed and declared effective with the
time periods set forth in Section 2), or (ii) the Company fails to file with the
Commission a request for acceleration in accordance with Rule 461 promulgated
under the Securities Act within five (5) Business Days of the date that the
Company is notified (orally or in writing, whichever is earlier) by the
Commission that a Registration Statement will not be "reviewed," or not subject
to further review, or (iii) the Registration Statement is filed with and
declared effective by the Commission but thereafter ceases to be effective as to
all Registrable Securities at any time prior to the expiration of the
Effectiveness Period, without being succeeded immediately by a subsequent
Registration Statement filed with and declared effective by the Commission, or
(iv) trading in the Common Stock shall be suspended or if the Common Stock is
delisted from the Nasdaq SmallCap Market or other exchange for any reason for
more than three Business Days in the aggregate, or (v) the conversion rights of
the Holders are suspended for any reason, or (vi) the Company breaches in a
material respect any covenant or other material term or condition to this
Agreement, the Security Agreement, the Purchase Agreement (other than a
representation or warranty contained therein) or any other agreement, document,
certificate or other instrument delivered in connection with the transactions
contemplated hereby and thereby, and such breach continues for a period of
thirty days after written notice thereof to the Company, or (vii) the Company
has breached Section 3(n) (any such failure or breach being referred to as an
"Event," and for purposes of clauses (i), (v) and (vii) the date on which such
Event occurs, or for purposes of clause (ii) the date on which such five day
period is exceeded, or for purposes of clause (iii) after more than fifteen
Business Days, or for purposes of clause (iv) the date on which such three
Business Day period is exceeded, or for clause (vi) the date on which such
thirty day period is exceeded, being referred to as "Event Date"), the Company
shall pay, at the option of the Holder, an amount in cash or shares of Common
Stock, as liquidated damages to each Holder equal to 2% for each calendar month
or portion thereof of the principal amount of the Notes held by such Holder plus
the principal amount of any Notes that have been converted to the extent any of
the Conversion Shares issued upon such conversion have not been sold from the
Event Date until the applicable Event is cured. Payments to be made pursuant to
this Section 7(e) shall be due and payable immediately upon demand in
immediately available funds. If the Holder elects to be paid in shares of Common
Stock, the number of such shares of Common Stock shall be based on the
liquidated damage amount divided by the Conversion Rate (as defined in the
Note).

          (f) Amendments and Waivers. The provisions of this Agreement,
including the provisions of this sentence, may not be amended, modified or
supplemented, and waivers or consents to departures from the provisions hereof
may not be given, unless the same shall be in writing and signed by the Company
and each of the Holders. Notwithstanding the foregoing, a waiver or consent to
depart from the provisions hereof with respect to a matter that relates
exclusively to the rights of Holders and that does not directly or indirectly
affect the rights of other Holders may be given by Holders of at least a
majority of the Registrable Securities to which such waiver or consent relates;
provided, however, that the provisions of this sentence may not be amended,
modified, or supplemented except in accordance with the provisions of the
immediately preceding sentence.

          (g) Notices. Any and all notices or other communications or deliveries
required or permitted to be provided hereunder shall be in writing and shall be
deemed given and

                                      -14-
<PAGE>

effective on the earlier of (i) the date of transmission, if such notice or
communication is delivered via facsimile at the facsimile telephone number
specified for notice prior to 5:00 p.m., New York City time, on a Business Day,
(ii) the Business Day after the date of transmission, if such notice or
communication is delivered via facsimile at the facsimile telephone number
specified for notice later than 5:00 p.m., New York City time, on any date and
earlier than 11:59 p.m., New York City time, on such date, (iii) the Business
Day following the date of mailing, if sent by nationally recognized overnight
courier service or (iv) actual receipt by the party to whom such notice is
required to be given. The addresses for such communications shall be with
respect to each Holder at its address set forth under its name on Schedule 1
attached hereto, or with respect to the Company, addressed to:

                          Analytical Surveys, Inc.
                          941 North Meridian Street
                          Suite 100
                          Indianapolis, Indiana 46204
                          Attention:  Norman Rokosh
                          Telecopier: (317) 532-3433
                          Telephone:  (317) 634-1000

or to such other address or addresses or facsimile number or numbers as any such
party may most recently have designated in writing to the other parties hereto
by such notice. Copies of notices to the Company shall be sent to Sherman &
Howard L.L.C., 633 17th Street, Suite 3000, Denver, Colorado 80202, Attention:
James F. Wood, Esq., Facsimile No.: (303) 298-0940.

          (h) Successors and Assigns. This Agreement shall be binding upon and
inure to the benefit of the parties and their successors and permitted assigns
and shall inure to the benefit of each Holder and its successors and assigns.
The Company may not assign this Agreement or any of its rights or obligations
hereunder without the prior written consent of each Holder. Each Purchaser may
assign its rights hereunder in the manner and to the Persons as permitted under
this Agreement and the Purchase Agreement.

          (i) Assignment of Registration Rights. The rights of each Holder
hereunder, including the right to have the Company register for resale
Registrable Securities in accordance with the terms of this Agreement, shall be
automatically assignable by each Holder to any Affiliate of such Holder or any
other Holder or Affiliate of any other Holder of all or a portion of the Notes
or the Registrable Securities if: (i) the Holder agrees in writing with the
transferee or assignee to assign such rights, and a copy of such agreement is
furnished to the Company within a reasonable time after such assignment, (ii)
the Company is, within a reasonable time after such transfer or assignment,
furnished with written notice of (a) the name and address of such transferee or
assignee, and (b) the securities with respect to which such registration rights
are being transferred or assigned, (iii) following such transfer or assignment
the further disposition of such securities by the transferee or assignees is
restricted under the Securities Act and applicable state securities laws, (iv)
at or before the time the Company receives the written notice contemplated by
clause (ii) of this Section, the transferee or assignee agrees in writing with
the Company to be bound by all of the provisions of this Agreement, (v) such
transfer shall have been made in accordance with the applicable requirements of
the Purchase Agreement, and

                                      -15-
<PAGE>

(vi) at least 100,000 shares of Registrable Securities (appropriately adjusted
for any stock dividend, split or combination of the Common Stock) are being
transferred to such transferee or assignee in connection with such assignment of
rights. In addition, each Holder shall have the right to assign its rights
hereunder to any other Person with the prior written consent of the Company,
which consent shall not be unreasonably withheld. The rights to assignment shall
apply to the Holders (and to subsequent) successors and assigns.

          (j) Counterparts. This Agreement may be executed in any number of
counterparts, each of which when so executed shall be deemed to be an original
and, all of which taken together shall constitute one and the same Agreement. In
the event that any signature is delivered by facsimile transmission, such
signature shall create a valid binding obligation of the party executing (or on
whose behalf such signature is executed) the same with the same force and effect
as if such facsimile signature were the original thereof.

          (k) Governing Law. This Agreement shall be governed by and construed
in accordance with the laws of the State of New York, without regard to
principles of conflicts of law thereof.

          (l) Cumulative Remedies. The remedies provided herein are cumulative
and not exclusive of any remedies provided by law.

          (m) Severability. If any term, provision, covenant or restriction of
this Agreement is held to be invalid, illegal, void or unenforceable in any
respect, the remainder of the terms, provisions, covenants and restrictions set
forth herein shall remain in full force and effect and shall in no way be
affected, impaired or invalidated, and the parties hereto shall use their
reasonable efforts to find and employ an alternative means to achieve the same
or substantially the same result as that contemplated by such term, provision,
covenant or restriction. It is hereby stipulated and declared to be the
intention of the parties that they would have executed the remaining terms,
provisions, covenants and restrictions without including any of such that may be
hereafter declared invalid, illegal, void or unenforceable.

          (n) Headings. The headings herein are for convenience only, do not
constitute a part of this Agreement and shall not be deemed to limit or affect
any of the provisions hereof.

          (o) Shares Held by the Company and its Affiliates. Whenever the
consent or approval of Holders of a specified percentage of Registrable
Securities is required hereunder, Registrable Securities held by the Company or
its Affiliates (other than any Holder or transferees or successors or assigns
thereof if such Holder is deemed to be an Affiliate solely by reason of its
holdings of such Registrable Securities) shall not be counted in determining
whether such consent or approval was given by the Holders of such required
percentage.

                  [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]

                                      -16-
<PAGE>

          IN WITNESS WHEREOF, the parties hereto have caused this Registration
Rights Agreement to be duly executed by their respective authorized persons as
of the date first indicated above.

                                        ANALYTICAL SURVEYS, INC.

                                        By:
                                           -------------------------------------
                                           Name:
                                           Title:

                                        Tonga Partners, L.P.

                                        By:
                                           -------------------------------------
                                           Name:
                                           Title:

                                      -17-
<PAGE>

                                   Schedule I

Tonga Partners, L.P.
150 California Street, 5th Floor
San Francisco, California 94111

Attention: Carlo Cannell
Tel No.: (415) 835-8300
Fax No.: (415) 391-5245

                                      -18-<PAGE>
                                                              EXHIBIT 10.31

                               SECURITY AGREEMENT

     SECURITY AGREEMENT, dated April 2, 2002 (this "Agreement"), by ANALYTICAL
SURVEYS, INC., a Colorado corporation having its principal place of business at
941 North Meridian Street, Suite 100, Indianapolis, Indiana 46204 (the
"Grantor"), for the benefit of Tonga Partners, L.P. (the "Secured Party").

                              W I T N E S S E T H:
                              - - - - - - - - - -

     WHEREAS, on the date hereof, the Grantor has executed a senior secured
convertible promissory note, in favor of the Secured Party in the principal
amount of $2,000,000.00 (the "Note"), issued pursuant to the Note and Warrant
Purchase Agreement, dated as of March 21, 2002 between the Grantor and the
Secured Party (the "Purchase Agreement"). In order to provide security for the
payment of all of the obligations of the Grantor to the Secured Party under the
Note, the Grantor has agreed to grant to the Secured Party a continuing lien and
security interest in all of the Grantor's assets and property, including,
without limitation, all personal property, and to execute this and such other
security agreements and instruments as are necessary to grant such lien and
security interest and enable the Secured Party to perfect such security
interest.

     NOW, THEREFORE, in consideration of the premises contained herein and in
the Note and for other good and valuable consideration, the receipt and
sufficiency of which is hereby acknowledged, the Grantor agrees with the Secured
Party as follows:

Section 1. DEFINITIONS.

     Capitalized terms used in this Security Agreement which are not otherwise
defined herein shall have the following meanings:

     "Account" shall have the meaning assigned to such term in the Code.

     "Books and Records" shall mean all books of account, records, files,
correspondence, software and data bases of the Grantor, in whatever form
appearing.

     "Chattel Paper" shall have the meaning assigned to such term in the Code.

     "Code" shall mean the Uniform Commercial Code as in effect in the State of
New York from time to time.

     "Collateral" shall have the meaning assigned thereto in Section 2 of this
Agreement.

<PAGE>

     "Contract Rights" shall mean all Accounts, Chattel Paper, Documents,
General Intangibles and Instruments (whether or not any of the same are created
or evidenced by a Related Contract), and every other right which the grantor may
have from time to time under any Related Contract.

     "Document" shall have the meaning assigned to that term in the Code.

     "Equipment" shall have the meaning assigned to that term in the Code.

     "General Intangibles" shall have the meaning assigned to that term in the
Code, and shall include, without limitation, all Marks.

     "Governmental Authority" shall mean any governmental, quasi-governmental,
judicial, public or statutory instrumentality, authority, agency, bureau, body
or entity or the United States of America or of any state, county, municipality
or other political subdivision located therein.

     "Instrument" shall have the meaning assigned to that term in the Code.

     "Inventory" shall have the meaning assigned to that term in the Code.

     "Marks" shall mean all trademarks, copyrights and service marks (registered
or unregistered), all registrations, recordings and applications made, filed or
recorded in the United States Patent and Trademark Office or any similar office
or agency of any other Governmental Authority for trademarks or service marks,
all other trademarks, copyrights, trade names, fictitious business names,
business names, company names, corporate names, business identifiers, trade
styles, trade dress, service marks, logos or designs, and all other property or
rights of similar nature, all renewals, reissues and extensions of any of the
foregoing, the goodwill of the Grantor's business symbolized by any of the
foregoing, all licenses and license agreements by any of the foregoing, all
licenses and license agreements with respect to any of the foregoing, and all
Proceeds of and rights associated with any of the foregoing (including, but not
limited to, all license royalties, all claims of right or priority of use and
all causes of action and rights to collect damages now or hereafter existing by
reason of any past, present or future infringement or dilution of any of the
foregoing of injury to the associated goodwill).

     "Proceeds" shall mean whatever is received by the Grantor upon the sale,
exchange, collection or other disposition of any Collateral or any proceeds
therefrom, and shall include, without limitation, all "proceeds" as that term is
defined in the Code.

     "Related Contract" shall mean any contract, instrument or other document
which creates, evidences, secures or guarantees any Contract Right.

                                       2
<PAGE>

Section 2. GRANT OF SECURITY INTEREST.

     The Grantor hereby pledges, assigns and grants to the Secured Party a
continuing security interest in and lien on all assets and property of the
Grantor, including, without limitation, all personal property of the Grantor,
wherever located and whether now or hereafter existing and whether now owned or
hereafter acquired, of every kind and description, tangible or intangible,
including, without limitation, all Accounts, Contract Rights, Equipment,
Inventory, Proceeds, Books and Records and, to the extent not otherwise included
all payments under insurance (whether or not the Secured Party is the
loss payee) or under any indemnity, warranty, guaranty or government award which
is payable by reason of any damage to, or any loss, taking or condemnation of,
any of the foregoing (collectively, the "Collateral"). The continuing security
in and lien on the Collateral granted by the Grantor to the Secured Party
pursuant to this Agreement shall expire and this Agreement shall be of no
further force or effect at such time that the Grantor consummates a subsequent
financing with a third party in an aggregate amount of $4,000,000 or greater.

Section 3. OBLIGATIONS SECURED.

     The Collateral hereunder constitutes and will constitute continuing
security for the strict performance and observance by the Grantor of the prompt
payment, when due, of all present and future obligations and indebtedness of the
Grantor to the Secured Party under the Note (after giving effect to any
offset rights of the Grantor thereunder with respect thereto) and of the Grantor
under this Agreement (collectively, the "Obligations").

Section 4. GRANTOR REMAINS LIABLE.

     Anything herein to the contrary notwithstanding, in the absence of the
Secured Party's express prior written consent thereto, (a) the Grantor shall
remain liable under any and all contracts and agreements included in the
Collateral to the extent set forth therein to perform all of its duties and
obligations thereunder to the same extent as if this Agreement had not been
executed, (b) the exercise by the Secured Party of any of the rights hereunder
shall not release the Grantor from any of its duties or obligations under any
contracts and agreements included in the Collateral, and (c) the Secured Party
shall not have any obligation or liability under any contracts and agreements
included in the Collateral by reason of this Agreement, nor shall the Secured
Party be obligated to perform any of the obligations or duties of the Grantor
under any such contract or agreement or to take any action to collect or enforce
any claim for payment assigned hereunder.

Section 5. REPRESENTATIONS AND WARRANTIES.

     The Grantor represents and warrants to the Secured Party that:

                                       3
<PAGE>

     5.1 The Grantor is a corporation duly organized, validly existing and in
good standing under the laws of its state of incorporation, is duly qualified
and in good standing under the laws of each jurisdiction where the character of
its properties or the transaction of its business makes such qualification
necessary, and has full power to own or hold under lease its properties and
assets and to carry on its business as now being conducted.

     (a) The Grantor has full power and authority to execute, deliver and
perform this Agreement which has been duly authorized by all necessary and
proper corporate action. No consent of stockholders or of any public authority
is required as a condition to the validity of this Agreement. The making and
performance by the Grantor of this Agreement will not violate any provision of
law and will not conflict with or result in the breach of any order, writ,
injunction or decree of any court or government instrumentality, or its charter
or by-laws or create a default under any agreement, note or indenture to which
it is a party or by which it is bound or to which any of its property is
subject, or result in the imposition of any lien, charge, security interest or
encumbrance of any nature whatsoever upon any of its properties or assets,
except for the liens created under this Agreement.

     (b) This Agreement has been duly executed and delivered, and constitutes
the legal, valid and binding obligation of the Grantor, enforceable in
accordance with its terms.

     5.2 The Grantor has good title to and is the lawful owner of the Collateral
free from all claims, liens, encumbrances, charges or security interests
whatsoever. Except as provided in Section 6.9 of this Agreement, the Collateral
will at all times be kept at the location(s) set forth on Exhibit A hereto.

     5.3 The provisions of this Agreement create a valid, and upon filing a
UCC-1 financing statement with the Secretary of State of the State of Colorado,
a perfected security interest in the Collateral, enforceable in accordance with
its terms.

     5.4 There are no judgments outstanding against the Grantor and there are no
actions or proceedings before any court or administrative agency pending or, to
the knowledge of the Grantor, threatened against the Grantor which, if
determined adversely to the Grantor, would affect title to or possession of the
Collateral.

     5.5 The Grantor's principal office and place of business where it maintains
its records concerning the Collateral is at its address stated above. The
Grantor has no other office or place of business except as indicated on Exhibit
A hereto.

Section 6. COVENANTS.

     The Grantor covenants and agrees that from the date of this Agreement until
payment in full of all of the Obligations:

                                       4
<PAGE>

     6.1 The Grantor shall keep and maintain the Collateral insured against loss
or damage by fire and all other risks as is customarily maintained by similar
businesses for the full insurable value thereof. Such policies shall by their
terms provide that the Secured Party be given at least 30 days prior written
notice of any amendment, modification or cancellation thereof and that the
Secured Party shall have the option, but not the obligation, to pay the
premiums to continue such insurance in effect or obtain like coverage. The
originals or certificates of all such policies shall be delivered to the Secured
Party. The Grantor agrees that any payment made by the Secured Party
pursuant to the foregoing authorization, shall bear interest thereon at the rate
of 10% from the date of such payment and shall become part of the Obligations
and be shall secured by the Collateral pursuant to the terms of this Agreement.
Upon an Event of Default, the Grantor hereby appoints the Secured Party as its
attorney-in-fact to make, adjust or settle any claim under any insurance policy
insuring the Collateral.

     6.2 The Grantor shall maintain the Collateral in good repair, working order
and condition, subject to normal wear and tear, and make all reasonable repairs,
replacements, additions and improvements thereto.

     6.3 The Grantor shall give the Secured Party full and free access to the
Collateral and to all books, correspondence and records of the Grantor with
respect thereto upon reasonable notice and at all reasonable times, and shall
permit upon the occurrence and continuance of an Event of Default (as
hereinafter defined) the Secured Party and its representatives to examine
the same and to make extracts therefrom all at the Grantor's expense.

     6.4 The Grantor shall promptly pay and discharge or cause to be paid and
discharged all its obligations and liabilities including, without limitation,
all taxes, assessments and governmental charges upon it or its income or
properties, when due unless and to the extent only that the same shall be
contested in good faith and by appropriate proceedings and then only to the
extent that a bond is filed in cases where the filing of a bond is necessary to
avoid the creation of a lien against any of its property.

     6.5 The Grantor shall do, or cause to be done, all things necessary to
preserve and keep in full force and effect its corporate existence and all
franchises, rights and privileges necessary for the proper conduct of its
business, and continue to engage in the business of the same type as now
conducted by it.

     6.6 The Grantor shall not grant, permit or suffer to exist any lien, claim,
security interest or encumbrance upon the Collateral, except those in favor of
the Secured Party, unless and to the extent only that the same shall be
contested in good faith and by appropriate proceedings and then only to the
extent that a bond is filed in cases where the filing of a bond is necessary to
avoid the creation of a lien against any of the Collateral.

                                       5
<PAGE>

     6.7 The Grantor shall notify the Secured Party in writing within 5 business
days after the occurrence thereof, of the occurrence of any event which
constitutes, or which with notice or lapse of time, or both, would constitute an
Event of Default (as hereinafter defined).

     6.8 The Grantor shall execute and deliver such further or additional
instruments and assurances, and take all such additional action as the Secured
Party may require for the purpose of carrying out the provisions of this
Agreement.

     6.9 The Grantor shall not sell, assign, lease or otherwise dispose of the
Collateral except in the ordinary course of business.

     6.10 The Grantor shall not change its principal office or the place where
it maintains its records pertaining to the Collateral as specified in Section
5.6 hereof without giving the Secured Party at least 30 days prior written
notice thereof.

     6.11 The Grantor shall not remove or permit the removal of the Collateral
from its present location as set forth on Exhibit A hereto except in the
ordinary course of business without the prior written consent of the Secured
Party.

Section 7. OPTION TO PERFORM OBLIGATION OF THE GRANTOR IN RESPECT OF THE
COLLATERAL.

     If the Grantor fails or refuses to make any payment, perform any covenant
or obligation, or take any other action which the Grantor is obligated hereunder
to perform, observe, take or do, then the Secured Party may, at its option,
without notice or demand upon the Grantor and without releasing the Grantor from
any obligation or covenant hereof, perform, observe, take or do the same in such
manner and to such extent as the Secured Party may deem necessary to protect any
of the Collateral and their rights hereunder including, without limitation,
obtaining insurance and the payment of any taxes and the payment of any sums
necessary to discharge liens or security interests at any time levied or placed
on the Collateral.

Section 8. EVENTS OF DEFAULT.

     For purposes of this Agreement, any of the following events shall
constitute an "Event of Default":

     8.1 The Grantor shall fail to make any payment when due of principal and
interest on the Note when such payment is due thereunder;

     8.2 The Grantor shall default in the performance or observance of any
covenant or agreement contained in this Agreement and such default is not fully
cured within three (3) business days after the occurrence thereof;

                                       6
<PAGE>

     8.3 Any representation or warranty made by or on behalf of the Grantor in
this Agreement or the other Transaction Documents (as defined in the Purchase
Agreement) or in any other certificate, agreement, instrument or statement
delivered to the Secured Party by or on behalf of the Grantor shall at any
time prove to have been incorrect when made in any material respect;

     8.4 An Event of Default (as defined in the Note) shall have occurred and
be continuing.

     8.5 There shall be a defect in the Grantor's title to any of the Collateral
and such defect in title shall not have been cured or removed within 20 days
after the Grantor's receipt of written notice thereof;

     8.6 The Grantor shall become insolvent, make an assignment for the benefit
of creditors, file a petition in bankruptcy, be adjudicated insolvent or
bankrupt, admit in writing its inability to pay its debts as they mature,
petition or apply for, consent to, or acquiesce in the appointment of, a trustee
or receiver for the Grantor or for a substantial part of its property; or any
other bankruptcy, reorganization, debt arrangement or other proceeding under any
bankruptcy, insolvency law, or any dissolution or liquidation proceeding shall
be instituted by or against the Grantor, and if instituted against it, shall be
consented to or acquiesced in by the Grantor or shall not be dismissed or, if
contested, stayed within a period of 90 days; or any judgment, writ of
attachment or execution or any similar process shall be issued or levied against
a substantial part of the property of the Grantor and shall not be released,
stayed, bonded or vacated within a period of 90 days after its issue or levy;

     8.7 The Grantor shall, at any time without the prior written consent of the
Secured Party, enter into an agreement to change the location of the
Collateral or permit any change in such location of the Collateral from that
specified in Section 5.3 hereof except as permitted by Section 6.9 of this
Agreement, and/or

     8.8 The lien created hereunder shall, for any reason other than by or
through the conduct of the Secured Party, cease to be valid.

Section 9. REMEDIES.

     In case any Event of Default shall have occurred and be continuing, the
Secured Party shall have, in addition to all other rights and remedies given
it by this Agreement or the Note, those allowed by law and the rights and
remedies of a secured party under the Uniform Commercial Code as enacted in any
jurisdiction in which any of the Collateral may be located and, without limiting
the generality of the foregoing, the Secured Party may immediately, without
demand of performance and without notice of intention to sell or of time or
place of sale or redemption or other notice or demand whatsoever to the Grantor,
all of which are hereby expressly waived, and without advertisement, enter onto
the premises where the Collateral is

                                       7
<PAGE>

located and take possession thereof without liability for any lawsuit or action,
and sell, lease or otherwise dispose of all or any part of the Collateral or any
interest which the Grantor may have therein, either at public or private sale or
otherwise, and after deducting from the proceeds of sale or other disposition of
the Collateral all expenses (including all reasonable fees and expenses of
counsel) as provided in Section 14 hereof, shall apply the residue of such
proceeds toward the payment of the Obligations. If notice of any sale or other
disposition is required by law to be given, the Grantor hereby agrees that a
notice sent at least ten (10) days before the time of any intended public sale
or before the time after which any private sale or other disposition of the
Collateral is to be made shall be reasonable notice of such sale or other
disposition. The Grantor agrees to assemble the Collateral, or cause it to be
assembled, at such place or places as the Secured Party may designate by
written notice to the Grantor. At any such sale or other disposition, the
Secured Party may purchase the whole or any part of the Collateral, free from
any right of redemption on the part of the Grantor, which right is hereby waived
and released. Without limiting the generality of the rights and remedies
conferred upon the Secured Party under this Section 9, the Secured Party
may: (a) enter upon the premises of the Grantor and take immediate possession of
the Collateral, either personally or by means of a receiver appointed by a court
therefor, using all lawful force to do so; (b) at the Secured Party's option,
use, operate, manage and control the Collateral in any lawful manner; (c)
collect and receive all rents, income, revenue, earnings, issue and profits
therefrom; and (d) maintain, repair, renovate, alter or remove the Collateral as
the Secured Party may determine in their discretion and any monies so
collected or received by the Secured Party shall be applied to, or may be
accumulated for application upon the Obligations and the Grantor shall be liable
for any deficiency. If a surplus remains after the satisfaction in full of the
Obligations, the Secured Party shall promptly deliver such surplus to the
Grantor.

Section 10. POWER OF ATTORNEY.

     The Grantor authorizes the Secured Party and does hereby make, constitute
and appoint the Secured Party and agents of the Secured Party with full
power of substitution, as the Grantor's true and lawful attorney-in-fact with
power, in its own name or in the name of the Grantor, upon the occurrence and
continuance of any Event of Default, to endorse any notes checks, drafts, money
orders, or other instruments of payment (including, payments under or in respect
of any policy of insurance) in respect of the Collateral that may come into
possession of the Secured Party; to sign and endorse any documents relating to
the Collateral; to pay or discharge taxes, liens, security interests or other
encumbrances at any time levied or placed on or threatened against the
Collateral; to grant, collect, receipt or, compromise, settle and sue for monies
due in respect of the Collateral; and generally, to do at the Secured Party's
option and at the Grantor's expense, at any time, or from time to time all act
and things which the Secured Party deems necessary to protect, preserve and
realize upon the Collateral and the Grantor's security interests therein in
order to effect the intent of this Agreement, as fully and effectually as the
Grantor might or could do; and the Grantor hereby ratifies all that said
attorney shall do or cause to be done by virtue hereof. THIS POWER OF ATTORNEY
IS COUPLED WITH AN INTEREST AND SHALL BE IRREVOCABLE FOR AS LONG AS ANY OF THE

                                       8
<PAGE>
OBLIGATIONS SHALL BE OUTSTANDING. The Grantor agrees that any reasonable fees,
costs and expense incurred by the Secured Party pursuant to the foregoing
authorization, and interest thereon at the rate prescribed in the Note from the
date of incurring any such reasonable fees, costs and expense, shall become part
of the Obligations and be secured by the Collateral.

Section 11. NOTICES.

     All notices, requests, demands and other communications to or upon the
respective parties hereto shall be deemed to have been given or made three days
after deposited in the mails and sent by registered or certified mail, postage
prepaid, return receipt requested, or when delivered personally, to the parties
at their addresses hereinabove provided, or to such other addresses as may
hereafter be designated in writing by the respective parties hereto.

Section 12. NO WAIVER; REMEDIES CUMULATIVE.

     No failure on the part of the Secured Party to exercise, and no delay in
exercising any right hereunder shall operate as a waiver thereof, nor shall any
single or partial exercise by the Secured Party of any right hereunder
preclude any other or further exercise thereof or the exercise of any other
right. The remedies herein provided are cumulative and not exclusive of any
remedies provided by law.

Section 13. FINANCING STATEMENTS; FURTHER ASSURANCES; FILING.

     The Grantor shall deliver UCC-1 financing statements in form and substance
satisfactory to the Secured Party and with the Secured Party's security
interest duly noted thereon with respect to the Collateral for filing at the
appropriate offices. Thereafter, within 10 business days after the Secured
Party's written request therefor, the Grantor shall cause such additional
Uniform Commercial Code financing statements with respect to the Collateral or
any modifications or amendments to any such financing statements (all in form
and substance reasonable satisfactory to the Secured Party) to be delivered to
the Secured Party for filing at the appropriate offices. The Grantor from time
to time, at its sole expense, will promptly execute and deliver all further
instruments and documents, and take all further action, that may be reasonably
necessary or desirable, or that the Secured Party may reasonably request, and
hereby authorizes the Secured Party to take all action (including the filing
of any financing statements, continuation statements or amendments thereto with
respect to the Collateral without the signature of the Grantor where permitted
by law) as the Secured Party in each case may deem reasonably necessary,
proper or desirable in order to perfect and protect any security interest
granted or purported to be granted hereby or to enable the Secured Party to
exercise and enforce its rights and remedies hereunder with respect to any
Collateral. A carbon, photographic or other reproduction of this Agreement or
any financing statement covering the Collateral or any part thereof shall be
sufficient as a financing statement where permitted by law. The Secured Party
shall execute and deliver to the Grantor terminations to any such financing

                                       9
<PAGE>

statements within 3 business days of the Grantor's request therefore upon
payment of the Obligations.

Section 14. COSTS AND EXPENSES.

     The Grantor shall reimburse the Secured Party for all costs and expenses
incurred by it and shall pay the reasonable fees and disbursements of counsel
to the Secured Party in connection with enforcement of the Secured Party's
rights hereunder.

Section 15. AMENDMENTS.

     No amendment, modification or waiver of any provision of this Agreement nor
consent to any departure by the Grantor therefrom shall be effective unless the
same shall be in writing and signed by the Secured Party and then such waiver
or consent shall be effective only in the specific instance and for the specific
purpose for which given.

Section 16. TERMINATION.

     Upon the payment in full of all Obligations, the Secured Party shall
execute and deliver to the Grantor all such documents and instruments as shall
be necessary to evidence termination of this Agreement and the security
interests created hereunder; provided, however, the obligations of the Grantor
under Section 13 hereof shall survive any termination under this Section 16.

Section 17. GOVERNING LAW.

     THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE
LAWS OF THE STATE OF NEW YORK, WITHOUT REGARD TO PRINCIPLES OF CONFLICTS OR
CHOICE OF LAW.

Section 18. ASSIGNMENT, ETC.

     The Grantor shall not assign, pledge, mortgage, sublet or otherwise
transfer or encumber any of its rights or obligations, as the case may be, under
this Agreement without the Secured Party's prior written consent. Any such
purported assignment, pledge, mortgage, sublet, transfer or other action without
such written consent shall be void. This Agreement shall be binding upon each of
the Grantor and its successors and shall inure to the benefit of the Secured
Party and its successors and assigns.

Section 19. SEVERABILITY.

     The provisions of this Agreement are severable, and if any provision shall
be held invalid or unenforceable in whole or in part in any jurisdiction, then
such invalidity or

                                       10
<PAGE>

unenforceability shall not in any manner affect such provision in any other
jurisdiction or any other provision of this Agreement in any jurisdiction.

              [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]

                                       11
<PAGE>

     IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
duly executed by their authorized representatives on the date first above
written.

                                                ANALYTICAL SURVEYS, INC.

                                                By:
                                                   -----------------------------
                                                   Name:
                                                   Title:

                                                Tonga Partners, L.P.

                                                By:
                                                   -----------------------------
                                                   Name:
                                                   Title:

                                       12
<PAGE>
                                                                       Exhibit A
                                                                              to
                                                              Security Agreement

                          Grantor's Places of Business

     The following address is the location where the Collateral is kept in
accordance with the Security Agreement:

                           941 North Meridian Street
                           Suite 100
                           Indianapolis, Indiana 46204

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