STV GROUP INC
10-Q, 2000-02-14
ENGINEERING SERVICES
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                       SECURITIES AND EXCHANGE COMMISSION

                             WASHINGTON, D.C. 20549


                                    FORM 10Q

                   QUARTERLY REPORT UNDER SECTION 13 OR 15(d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934

FOR QUARTER ENDED DECEMBER 31, 1999                   COMMISSION FILE NO. 0-3415

                             STV GROUP, INCORPORATED
(Exact name of registrant as specified in its charter)


     Pennsylvania                                         23-1698231
(State or other jurisdiction of                 (I.R.S. Employer Identification)
 incorporation or organization)


205 West Welsh Drive, Douglassville, Pennsylvania                  19518
(Address of principal executive offices)                         (Zip Code)


                                      (610) 385-8200
(Registrant's telephone number, including area code)


Securities registered pursuant to Section 12(g) of the Act:


                           Common Stock $.50 par value
                                (Title of class)


As of December  31,  1999,  there were  3,836,818  shares of common stock of the
registrant outstanding.

Indicate by check mark whether the registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the preceding twelve months, (or for such shorter period that the registrant was
required  to file  such  reports),  and  (2) has  been  subject  to such  filing
requirements for the past 90 days.

                           YES  X            NO


<PAGE>


                                TABLE OF CONTENTS


                                                                            Page

CAUTIONARY STATEMENT REGARDING FORWARD LOOKING STATEMENTS......................1

Part I:   FINANCIAL INFORMATION

          Item 1.   Financial Statements.......................................2

          Item 2.   Management's Discussion and Analysis of Financial
                    Condition and Results of Operation.........................6

          Item 3.   Quantitative and Qualitative Disclosures about Market Risk.8

Part II:  OTHER INFORMATION

          Item 1.   Legal Proceedings..........................................9

          Item 2.   Changes in Securities......................................9

          Item 3.   Defaults Upon Senior Securities............................9

          Item 4.   Submission of Matters to a Vote of Security Holders........9

          Item 5.   Other Information..........................................9

          Item 6.   Exhibits and Reports on Form 8-K...........................9

SIGNATURES....................................................................10





<PAGE>
            CAUTIONARY STATEMENT REGARDING FORWARD LOOKING STATEMENTS

Certain  oral  statements  made by  management  from  time to time  and  certain
statements  contained  herein,  including  certain  statements in  "Management's
Discussion and Analysis of Financial  Condition and Results of Operations"  such
as statements  regarding the Company's  ability to meet its liquidity  needs and
control costs, certain statements in Notes to Condensed  Consolidated  Financial
Statements,  and other statements  contained herein regarding  matters which are
not historical facts are forward looking  statements (as such term is defined in
the  Securities  Act of 1933) and  because  such  statements  involve  risks and
uncertainties,  actual  results may differ  materially  from those  expressed or
implied by such  forward  looking  statements.  Factors  that could cause actual
results to differ  materially  include,  but are not limited to those  discussed
below:

1.   The  Company's  ability to secure the capital and the related  cost of such
     capital necessary to fund its future growth.

2.   The  Company's   continued  ability  to  operate  in  a  heavily  regulated
     government  environment.  The Company's government contracts are subject to
     termination,  reduction  or  modification  as a result  of  changes  in the
     government's   requirements   or  budgetary   restrictions.   In  addition,
     government  contracts are subject to termination at the conveniences of the
     government. Under certain circumstances, the government can also suspend or
     debar  individuals  or  firms  from  obtaining  future  contracts  with the
     government.

3.   The level of competition  in the Company's  industry,  including  companies
     with significantly larger operations and resources than the Company.

4.   The  Company's  ability  to  identify  and  win  suitable  projects  and to
     consummate or complete any such projects.

5.   The Company's  ability to perform  design/build  projects which may include
     the  responsibility of ensuring the actual  construction of a project for a
     guaranteed price.

These and other  factors  have been  discussed  in more detail in the  Company's
Annual Report on Form 10-K for the fiscal year ended September 30, 1999.


                                       1

<PAGE>


                          PART I: FINANCIAL INFORMATION

Item 1.  Financial Statements

                    STV GROUP, INCORPORATED AND SUBSIDIARIES

                      CONDENSED CONSOLIDATED BALANCE SHEETS

                                   (UNAUDITED)
<TABLE>
<CAPTION>

                                                                 December 31, 1999   September 30, 1999
<S>                                                                <C>                  <C>
ASSETS
Current Assets
  Cash and Cash Equivalents                                            $2,385,000          $7,248,000
  Accounts Receivable                                                  34,524,000          30,590,000
  Costs and Estimated Profits of Uncompleted
    Contracts in Excess of Related Billings                            16,024,000          17,029,000
  Prepaid Expenses and Other Current Assets                               509,000             829,000
                                                                          -------             -------

  Total Current Assets                                                 53,442,000          55,696,000

Property and Equipment                                                  7,163,000           6,645,000

Less Accumulated Depreciation                                           5,032,000           4,832,000
                                                                        ---------           ---------

    Net Property and Equipment                                          2,131,000           1,813,000

Deferred Income Taxes                                                   2,443,000           2,443,000

Other Assets                                                              846,000             782,000
                                                                          -------             -------

      TOTAL                                                           $58,862,000         $60,734,000
                                                                      ===========         ===========

LIABILITIES AND STOCKHOLDERS' EQUITY
  Current Liabilities
    Accounts Payable                                                   $6,020,000          $7,675,000
    Accrued Expenses                                                    9,002,000          10,211,000
    Billings on Uncompleted Contracts in Excess of
      Related Costs                                                    16,122,000          17,094,000
    Current portion of long term debt                                     103,000             110,000
    Deferred income taxes                                               2,137,000           2,137,000
    Income tax payable                                                  1,253,000             876,000
                                                                        ---------             -------

      Total Current Liabilities                                        34,637,000          38,103,000

  Long-Term Debt                                                        3,065,000           2,794,000
  Post-retirement Benefits                                              1,070,000           1,070,000

  Stockholders' Equity
    Common Stock                                                        2,043,000           2,041,000
    Capital in Excess of Par                                            3,461,000           3,445,000
    Retained Earnings                                                  15,357,000          14,052,000
                                                                       ----------          ----------

      Total                                                            20,861,000          19,538,000
        Less:  Treasury Stock                                             771,000             771,000
                                                                          -------             -------

      Total Stockholders' Equity                                       20,090,000          18,767,000

      TOTAL                                                           $58,862,000         $60,734,000
                                                                      ===========         ===========
</TABLE>


See notes to condensed consolidated financial statements.


                                       2
<PAGE>


                    STV GROUP, INCORPORATED AND SUBSIDIARIES

                        CONSOLIDATED STATEMENTS OF INCOME

                                   (UNAUDITED)
<TABLE>
<CAPTION>

                                                    THREE MONTHS ENDED
                                                       December 31
                                                      1999         1998
<S>                                            <C>               <C>
Revenues

Total Revenues                                     $34,246,000       $34,221,000
Less Subcontract and Procurement Costs               6,846,000        11,362,000
                                                     ---------        ----------

Operating Revenue                                  $27,400,000       $22,859,000

Costs and Expenses

Costs of Services and Sales                         22,902,000        19,402,000
General and Administrative                           2,130,000         1,748,000
                                                     ---------         ---------

Total Costs and Expenses                            25,032,000        21,150,000

Interest Expense                                       (38,000)          (74,000)
Interest Income                                         93,000            73,000
                                                        ------            ------

Income Before Income Taxes                           2,423,000         1,708,000

Income Taxes                                         1,118,000           796,000
                                                     ---------           -------

Net Income                                          $1,305,000          $912,000
                                                    ==========          ========

Basic earnings per share:                                 $.34              $.24
Diluted earnings per share:                               $.31              $.22

</TABLE>

See notes to condensed consolidated financial statements.


                                       3
<PAGE>


                    STV GROUP, INCORPORATED AND SUBSIDIARIES

                      CONSOLIDATED STATEMENTS OF CASH FLOWS

                                   (UNAUDITED)
<TABLE>
<CAPTION>

                                                                      THREE MONTHS ENDED
                                                                          December 31
                                                                     1999            1998
<S>                                                          <C>              <C>
Operating Activities
  Net Income                                                      $1,305,000        $912,000
  Adjustments to reconcile net income to
    net cash provided by operating activities
      Depreciation and Amortization                                  269,000         189,000
  Changes in Operating assets and liabilities
      Accounts Receivable                                         (3,934,000)       (881,000)
      Costs of uncompleted contracts in
        excess of billings and other current assets                1,325,000        (286,000)
      Accounts Payable and accrued expenses                       (2,593,000)         19,000
      Billing in excess of related costs                            (972,000)       (281,000)
      Current Income Taxes                                           377,000         435,000
                                                                     -------         -------
        Net Cash provided by operating activities                ($4,223,000)       $107,000

Investing Activities
  Purchase of Property and Equipment                                (518,000)       (189,000)
  Purchase of Software                                              (159,000)       (119,000)
  Decrease in other assets                                            26,000           2,000
                                                                      ------           -----
    Net Cash used in investing activities                          ($651,000)      ($306,000)

Financing Activities
  Proceeds from issuance of common stock                              18,000               0
  Principal payments on line of credit and long
    term borrowings                                                   (7,000)       (260,000)
                                                                      ------        --------
    Net Cash used in financing activities                            $11,000       ($260,000)

  Decrease in cash and cash equivalents                           (4,863,000)       (459,000)
  Cash and cash equivalents at beginning of year                   7,248,000       4,444,000
                                                                   ---------       ---------
  Cash and cash equivalents at end of period                      $2,385,000      $3,985,000
                                                                  ==========      ==========
</TABLE>


See notes to condensed consolidated financial statements.


                                       4
<PAGE>


        Notes to Condensed Consolidated Financial Statements (Unaudited)

                                December 31, 1999

1.    BASIS OF PRESENTATION

The accompanying unaudited condensed consolidated financial statements have been
prepared in accordance  with  accounting  principles  generally  accepted in the
United States for interim  financial  information  and with the  instructions to
Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all
of the information  and footnotes  required by accounting  principles  generally
accepted in the United States for complete financial statements.

In the opinion of management,  all adjustments  (consisting of normal  recurring
accruals)  considered  necessary  for a fair  presentation  have been  included.
Operating  results for the three month  period  ended  December 31, 1999 are not
necessarily  indicative  of the results that may be expected for the fiscal year
ending September 30, 2000.

2.    USE OF ESTIMATES

The preparation of financial statements in conformity with accounting principles
generally accepted in the United States require management to make estimates and
assumptions  that affect the amounts  reported in the financial  statements  and
accompanying notes.
Actual results could differ from those estimates.

3.    EARNINGS PER SHARE

Basic  earnings  per share  (EPS) is  computed  by  dividing  net  income by the
weighted average number of shares of common stock outstanding during the period.
Diluted EPS recognizes the potential  dilutive effects of the future exercise of
common stock options.

<TABLE>
<CAPTION>
                                          THREE MONTHS ENDED
                                  Dec. 31, 1999         Dec. 31, 1998

<S>                              <C>                   <C>
Basic earnings per share                $0.34                 $0.24
Shares outstanding                  3,835,557             3,800,318

Diluted earnings per share              $0.31                 $0.22
Shares outstanding                  4,234,123             4,074,906
</TABLE>


                                       5

<PAGE>


Item 2. Management Discussion and Analysis of Financial Condition and Results of
        Operation

Results of Operations

Total  revenues for the quarter ended  December 31, 1999 (first  quarter  fiscal
2000) remained comparable to the first quarter of fiscal 1999 and decreased 6.7%
as compared to the previous  quarter,  primarily due to the decrease in revenues
related to pass-through  costs.  Operating  revenues  (total revenues  excluding
pass-through  costs)  increased 19.9% as compared to the first quarter of fiscal
1999 and increased 5.5% as compared to the previous quarter.

Pass-through  costs decreased 39.7% compared to the first quarter of fiscal 1999
and decreased 36.3% from the previous quarter. Pass-through costs vary depending
on  the  need  for  specialty   subconsultants   and  governmental   subcontract
requirements.

Costs of services, expressed as a percentage of operating revenues, decreased to
83.6% for the first  quarter of fiscal  2000 from 84.9% in the first  quarter of
fiscal 1999 and from 84.4% in the  previous  quarter.  While the decrease in the
percentages  from the first quarter of fiscal 1999 and the previous  quarter was
due to an increase in  operating  revenues  noted above,  the absolute  costs of
services also  increased  from the previous  quarter due to an increase in labor
related costs.

General and  administrative  expense,  expressed  as a  percentage  of operating
revenue,  is 7.8% in the first quarter of fiscal 2000 which is comparable to the
7.6%  recorded in the first  quarter of fiscal 1999 and a decrease  from 9.2% in
the  previous  quarter.  The  decrease  from the  previous  quarter is due to an
increase in operating revenues and a decrease in legal,  consulting,  and office
related expenses.

Interest  income,  net of interest  expense,  increased to $55,000 for the first
quarter of fiscal 2000 from net interest  expense of $1,000 in the first quarter
of fiscal 1999 and decreased from $76,000 in the previous quarter.


                                       6
<PAGE>


Income tax  expense  for the first  quarter of fiscal  2000 was 46.1% of pre-tax
income  compared  to 46.6% in the first  quarter of fiscal 1999 and 43.9% in the
previous quarter.  The increase from the previous quarter is due to the previous
quarter's  rate being reduced as a result of increased  pre-tax  income  derived
from the proceeds of a lawsuit settlement, reducing the effect of non-deductible
expenses.

Diluted  earnings per common share for the first quarter of fiscal 2000 was $.31
cents versus $.22 for the first quarter of fiscal 1999.

Financial Condition and Liquidity

Working  capital  increased  to  $18,805,000  from  $17,593,000  in the previous
quarter.  Subsequent  to December  31, 1999,  STV  completed  negotiations  with
another bank and obtained a $12,000,000  committed  line of credit.  The current
limit is a maximum of $12.0  million  based on the Company  maintaining  certain
financial covenants of which approximately $11.0 million is currently available.
The  Company  believes  that it and the  lender  will  maintain a line of credit
adequate to meet the  current and future  financial  needs of the  Company.  The
Company is  planning to continue  its  program of  purchasing  computer-assisted
design and drafting equipment.

The Company's backlog at December 31, 1999 is approximately $220 million.


Year 2000
The Year 2000 issue, or "The Y2K Bug" as it is sometimes  called,  is the result
of computer programs and equipment that were written and manufactured  using two
digits rather than four to define the applicable year.  Date-sensitive  computer
programs and equipment may recognize a date using only the last two digits. This
could result in the year 2000 being recognized as the year 1900. System failures
or miscalculations can occur, which would cause disruptions in operations and/or
the inability to process normal business transactions.  The Company is not aware
of any significant adverse effects of Year 2000 on its systems and operations.


                                       7
<PAGE>


Item 3.  Quantitative and Qualitative Disclosures about Market Risk.
Market risk exposures to the Company are not material.


                                       8
<PAGE>


                           PART II: OTHER INFORMATION

Item 1.    Legal Proceedings

           Not applicable.

Item 2.    Changes in Securities

           Not applicable.

Item 3.    Defaults Upon Senior Securities

           Not applicable.

Item 4.    Submission of Matters to Vote of Security Holders

           Not applicable.

Item 5.    Other Information

           Not applicable.

Item 6.    Exhibits and Reports on Form 8-K

           (a)   Exhibits

                 The following are filed as exhibits to Part I of this Form 10Q:

                 Exhibit 10.35 - Letter Agreement with PNC Bank

                 Exhibit 10.36 - Committed Line of Credit Note with PNC Bank

                 Exhibit 10.37 - Security Agreement with PNC Bank

                 Exhibit 10.38 - Reimbursement Agreement for Standby Letter(s)
                                 of Credit with PNC Bank

                 Exhibit 27 - Financial Data Schedule

           (b)   Reports on Form 8-K

                 The Company  filed no reports on Form 8-K for the quarter ended
                 December 31, 1999.


                                       9
<PAGE>


SIGNATURES

Pursuant  to the  requirements  of the  Securities  Exchange  Act of  1934,  the
registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned thereunto duly authorized.







STV GROUP, INCORPORATED
     (Registrant)




  February 14, 2000                   By:  /s/ Dominick M. Servedio
- ----------------------                     -------------------------------------
       Date                                Dominick M. Servedio
                                           President and Chief Executive Officer






  February 14, 2000                   By:  /s/ Peter W. Knipe
- ----------------------                     -------------------------------------
     Date                                  Peter W. Knipe
                                           Chief Financial Officer


                                       10

PNC Bank, N.A.
1600 Market Street
Philadelphia, PA 19103
215 585 5000 Tel



February 3, 2000                                                        PNC BANK


Peter W. Knipe
Vice President and Chief Financial Officer
STV GROUP, INCORPORATED
205 West Welsh Drive
Douglassville, Pennsylvania 19518

Re:      $12,000,000 Committed Line of Credit

Dear Pete:

         We are pleased to inform you that PNC Bank,  National  Association (the
"Bank"),  has approved your request for a committed  line of credit (the "Loan")
to STV Group,  Incorporated and STV Incorporated and its subsidiaries  listed on
the attached Schedule A (individually and collectively, the "Borrower"). We look
forward  to this  opportunity  to help  you  meet  the  financing  needs of your
business.  All the details  regarding  your Loan are  outlined in the  following
sections of this  letter.  If these terms are  satisfactory,  please  follow the
instructions for proceeding with your Loan provided at the end of this letter.

1. Facility and Use of Proceeds.  This is a committed  revolving  line of credit
under which the  Borrower  may  request  and the Bank,  subject to the terms and
conditions of this letter,  will make advances to the Borrower from time to time
until the Expiration Date, in an amount in the aggregate at any time outstanding
not to exceed  $12,000,000 (the "Line of Credit").  The "Expiration  Date" means
December  31,  2001,  or such  later  date as may be  designated  by the Bank by
written  notice to the Borrower.  Advances under the Line of Credit will be used
for working  capital,  acquisitions  or other general  business  purposes of the
Borrower.

         The Borrower may request that the Bank, in lieu of cash advances, issue
standby letters of credit  (individually,  a "Letter of Credit" and collectively
the "Letters of Credit") under the Line of Credit having expiration dates not to
exceed the earlier of one (1) year from the date of issuance and the  Expiration
Date; provided,  however, that the total amount of outstanding Letters of Credit
issued  hereunder (in the Bank's sole  discretion  and subject to  documentation
satisfactory to the Bank) shall not exceed  $2,000,000.00.  The  availability of
advances  under the Line of Credit  shall be reduced by the face  amount of each
Letter of Credit issued and outstanding  (whether or not drawn). Each payment by
the Bank under a Letter of Credit shall in the Bank's  discretion  constitute an
advance of principal under the Line of Credit and shall be

<PAGE>
STV Group, Incorporated
February 3, 2000
Page 2



evidenced  by the Note (as  defined  below).  The  Letters  of  Credit  shall be
governed by one or more reimbursement  agreements  executed by the Borrower (the
"Reimbursement Agreement").  Each request for the issuance of a Letter of Credit
must be accompanied by the Borrower's  execution of an application on the Bank's
standard  forms,  together  with all  supporting  documentation.  Each Letter of
Credit will be issued in the Bank's sole  discretion and in a form acceptable to
the Bank.  The Borrower shall pay the Bank a per annum issuance fee in an amount
equal to 1.5% of the face amount of each Letter of Credit,  payable quarterly in
arrears on a basis of a year of 360 days,  together  with such  other  customary
fees,  commissions and expenses  therefor as shall be required by the Bank. This
letter is not a  pre-advice  for the  issuance  of a letter of credit and is not
irrevocable.

2. Note.  The  obligation  of the Borrower to repay  advances  under the Line of
Credit shall be evidenced by a promissory  note (the "Note") in form and content
satisfactory to the Bank.

         This  letter  (the  "Letter  Agreement"),  the Note and the other  loan
documents  delivered  pursuant  hereto  will  constitute  the "Loan  Documents."
Capitalized  terms not defined herein shall have the meaning ascribed to them in
the Loan Documents.

3. Interest Rate.  Interest on the unpaid balance of the Line of Credit advances
will be charged at the rates,  and be payable on the dates and times,  set forth
in the Note evidencing the Loan.

4. Repayment.  Subject to the terms and conditions of this letter,  the Borrower
may borrow,  repay and reborrow  under the Line of Credit  until the  Expiration
Date, on which date the outstanding principal balance and any accrued but unpaid
interest shall be due and payable.

5. Security.  The Borrower must cause or has previously  caused the following to
be executed and  delivered to the Bank in form and content  satisfactory  to the
Bank as security for the Loan:

         (a) a security  agreement  granting the Bank a first priority perfected
lien on the Borrower's existing and future personal property,  including but not
limited to accounts, inventory,  equipment, general intangibles,  chattel paper,
documents and instruments.

         If all or any portion of the tangible collateral is located on property
which is not owned by the Borrower or which is subject to a mortgage in favor of
another lender,  the Borrower will deliver to the Bank Landlord's or Mortgagee's
Waivers,  as  applicable,  acceptable in form and substance to the Bank for each
such location.


<PAGE>
STV Group, Incorporated
February 3, 2000
Page 3



         Hazard insurance must be maintained on all inventory, equipment or real
property  securing  the Loan in such  amounts  and with  such  coverages  as are
acceptable to the Bank,  containing a standard  lender loss payable or mortgagee
clause in favor of the Bank.

         The Loan  will be  cross-collateralized  and  cross-defaulted  with all
other present and future Obligations of the Borrower to the Bank.

6.  Covenants.  Unless  compliance  is  waived in  writing  by the Bank or until
payment in full of the Loan and  termination  of the  commitment for the Line of
Credit:

         (a) The  Borrower  will  promptly  submit to the Bank such  information
relating  to the  Borrower's  affairs  (including  but  not  limited  to  annual
financial  statements for the Borrower) or any security for the Loan as the Bank
may reasonably request.

         (b) The Borrower  will notify the Bank in writing of the  occurrence of
an Event of Default or an act or condition which,  with the passage of time, the
giving of notice or both might become an Event of Default.

         (c) The Borrower  will comply with the  financial  and other  covenants
included in Exhibit "A" hereto.

7.  Representations  and  Warranties.  To induce the Bank to extend the Loan and
upon the making of any  advance to the  Borrower  under the Line of Credit,  the
Borrower represents and warrants as follows:

         (a) The Borrower's latest consolidated financial statements provided to
the Bank are true,  complete and  accurate in all  material  respects and fairly
present  the  financial  condition,  assets and  liabilities,  whether  accrued,
absolute,  contingent or otherwise, and the results of the Borrower's operations
for  the  period  specified  therein.  The  Borrower's   consolidated  financial
statements  have been prepared in accordance  with GAAP (as defined in Exhibit A
hereto)  consistently  applied  from  period  to period  subject  in the case of
interim statements to normal year-end adjustments.  Since the date of the latest
financial  statements  provided to the Bank,  the  Borrower has not suffered any
damage,  destruction  or  loss  which  has  materially  adversely  affected  its
business, assets, operations, financial condition or results of operations.

         (b)  There  are  no  actions,   suits,   proceedings  or   governmental
investigations pending or, to the knowledge of the Borrower,  threatened against
the  Borrower,  including  without  limitation  those  described on the attached
Exhibit B, which  could  result in a material  adverse  change in its  business,
assets, operations, financial condition or results of operations and there is

<PAGE>
STV Group, Incorporated
February 3, 2000
Page 4


no basis known to the Borrower or its officers,  directors or  shareholders  for
any such action, suit, proceedings or investigation.

         (c) The Borrower has filed all returns and reports that are required to
be filed by it in  connection  with any  federal,  state or local  tax,  duty or
charge levied, assessed or imposed upon the Borrower or its property,  including
unemployment,  social security and similar taxes and all of such taxes have been
either paid or adequate reserve or other provision has been made therefor.

         (d)  The  Borrower  is duly  organized,  validly  existing  and in good
standing under the laws of the state of its  incorporation  or organization  and
has the power and  authority  to own and  operate  its assets and to conduct its
business as now or proposed  to be carried on, and is duly  qualified,  licensed
and in good standing to do business in all jurisdictions  where its ownership of
property or the nature of its business requires such qualification or licensing.

         (e) The  Borrower  has full  power  and  authority  to  enter  into the
transactions  provided for in this Letter Agreement and has been duly authorized
to do so by all necessary and appropriate action and when executed and delivered
by the  Borrower,  this  Letter  Agreement  and the other  Loan  Documents  will
constitute the legal, valid and binding obligations of the Borrower, enforceable
in accordance with their terms.

         (f) There does not exist any default or violation by the Borrower of or
under any of the terms,  conditions or  obligations  of: (i) its  organizational
documents;  (ii) any  indenture,  mortgage,  deed of trust,  franchise,  permit,
contract,  agreement,  or other instrument to which it is a party or by which it
is bound;  or (iii) any law,  regulation,  ruling,  order,  injunction,  decree,
condition or other requirement applicable to or imposed upon the Borrower by any
law or by any governmental authority, court or agency.

         (g) The  Borrower  has  reviewed  the areas  within  its  business  and
operations  which  could be  adversely  affected  by,  and has  developed  or is
developing a program to address on a timely basis the risk that certain computer
applications  used by the  Borrower  may be  unable  to  recognize  and  perform
properly  date-sensitive  functions  involving dates prior to and after December
31, 1999 (the "Year 2000 Problem").  The Year 2000 Problem will not result,  and
is not  reasonably  expected to result,  in any material  adverse  effect on the
business,  properties,  assets,  financial  condition,  results of operations or
prospects of the Borrower, or the ability of the Borrower to duly and punctually
pay or perform its obligations hereunder and under the other Loan Documents.

8. Fees.  Beginning  on the first day of the quarter  after the date of the Note
and continuing on the first day of each quarter  thereafter until the Expiration
Date, the Borrower shall pay a

<PAGE>
STV Group, Incorporated
February 3, 2000
Page 5



commitment fee to the Bank, in arrears,  at the rate of .375 percent (.375%) per
annum on the average  daily  balance of the Line of Credit which is  undisbursed
and uncancelled during the preceding quarter. For the purpose of calculating the
commitment  fee,  the face amount of any  outstanding  Letters of Credit  issued
under the Line of Credit shall be deemed to be  disbursed.  The  commitment  fee
shall be  computed  on the  basis  of a year of 360 days and paid on the  actual
number of days elapsed.

9.  Expenses.  The Borrower will  reimburse  the Bank for the Bank's  reasonable
out-of-pocket  expenses  incurred or to be incurred in conducting UCC, title and
other  public  record  searches,  and in filing and  recording  documents in the
public records to perfect the Bank's liens and security interests.  The Borrower
shall also reimburse the Bank for the Bank's expenses  (including the reasonable
fees and expenses of the Bank's outside and in-house counsel) in documenting and
closing this  transaction,  in connection with any amendments,  modifications or
renewals  of the  Loan,  and in  connection  with the  collection  of all of the
Borrower's  obligations  to the Bank,  including but not limited to  enforcement
actions relating to the Loan.

10.  Depository.  The  Borrower  will  establish  and  maintain  at the Bank the
Borrower's primary depository accounts.

11. Additional Provisions. Before the first advance under the Loan, the Borrower
shall execute and deliver to the Bank the Note and other required Loan Documents
and such other  instruments  and documents as the Bank may  reasonably  request,
such as certified  resolutions,  incumbency  certificates  or other  evidence of
authority.  The Bank will not be obligated to make any advance under the Line of
Credit  if any  Event of  Default  or event  which  with  the  passage  of time,
provision  of notice or both would  constitute  an Event of  Default  shall have
occurred and be continuing.

12.  Other  Conditions  to  Advances.  The Bank will not be obligated to make an
advance under the Line of Credit until the Borrower has provided the  following,
all in form and content  satisfactory  to the Bank:  evidence of cancellation of
all  commitments  from and evidence of repayment in full of all  indebtedness to
First Union  National  Bank except for  obligations  relating to four letters of
credit outstanding on the date hereof, which are listed on the attached Schedule
B, which shall be replaced no later than June 30, 2000;  evidence of termination
of all  existing  liens in  favor of First  Union  National  Bank;  transfer  of
Borrower's primary operating accounts to the Bank.

         Prior to execution of the final Loan Documents,  the Bank may terminate
this Letter  Agreement if a material  adverse  change occurs with respect to the
Borrower,  any  guarantor,  any  collateral  for the Loan or any other person or
entity connected in any way with the Loan, or if the

<PAGE>
STV Group, Incorporated
February 3, 2000
Page 6



Borrower  fails to comply  with any of the terms and  conditions  of this Letter
Agreement,  or if the Bank  reasonably  determines  that  any of the  conditions
cannot be met.

         This Letter  Agreement is governed by the laws of the  Commonwealth  of
Pennsylvania.  No modification,  amendment or waiver of any of the terms of this
Letter  Agreement,  nor any consent to any departure by the Borrower  therefrom,
will be  effective  unless made in a writing  signed by the party to be charged,
and then such waiver or consent shall be effective only in the specific instance
and for the purpose for which given.  When accepted,  this Letter  Agreement and
the other Loan Documents will constitute the entire  agreement  between the Bank
and  the   Borrower   concerning   the  Loan,   and  shall   replace  all  prior
understandings,  statements,  negotiations and written materials relating to the
Loan.

         THE BORROWER AND THE BANK IRREVOCABLY WAIVE ANY AND ALL RIGHTS THEY MAY
HAVE TO A TRIAL BY JURY IN ANY ACTION, PROCEEDING OR CLAIM OF ANY NATURE ARISING
OUT OF THIS  LETTER  AGREEMENT  AND THE  TRANSACTIONS  CONTEMPLATED  HEREBY  AND
ACKNOWLEDGE THAT THE FOREGOING WAIVER IS KNOWING AND VOLUNTARY.

         If and when a loan closing occurs,  this Letter  Agreement (as the same
may be amended  from time to time)  shall  survive the closing and will serve as
our loan agreement throughout the term of the Loan.

         To accept  these terms,  please sign the  enclosed  copy of this Letter
Agreement as set forth below and the Loan  Documents and return them to the Bank
within  ten (10) days from the date of this  Letter  Agreement,  or this  Letter
Agreement may be terminated  at the Bank's option  without  liability or further
obligation of the Bank.

         Thank  you for  giving  PNC Bank  this  opportunity  to work  with your
business.  We look  forward  to other ways in which we may be of service to your
business or to you personally.

Very truly yours,

PNC BANK, NATIONAL ASSOCIATION


By:      /s/ Amy T. Petersen

Title:   Vice President



<PAGE>
STV Group, Incorporated
February 3, 2000
Page 7



                                   ACCEPTANCE

With the intent to be legally bound hereby,  the above terms and  conditions are
hereby agreed to and accepted as of this 3rd day of February, 2000.

                                    BORROWER:

                                    STV GROUP, INCORPORATED

                                    By:  /s/ Peter W. Knipe   (SEAL)
                                    Print Name:  Peter W. Knipe
                                    Title: CFO


                                    STV INCORPORATED

                                    By:  /s/ Peter W. Knipe   (SEAL)
                                    Print Name:  Peter W. Knipe
                                    Title: CFO


                                    STV CONSTRUCTION SERVICES, INC.

                                    By:  /s/ Peter W. Knipe   (SEAL)
                                    Print Name:  Peter W. Knipe
                                    Title: CFO


                                    STV INTERNATIONAL, INC.

                                    By:  /s/ Peter W. Knipe   (SEAL)
                                    Print Name:  Peter W. Knipe
                                    Title: CFO



                [SIGNATURES ARE CONTINUED ON THE FOLLOWING PAGE]


<PAGE>
STV Group, Incorporated
February 3, 2000
Page 8



                                    STV/ENVIRONMENTAL, INC.

                                    By:  /s/ Peter W. Knipe   (SEAL)
                                    Print Name:  Peter W. Knipe
                                    Title: CFO


                                    STV SURVEYING, INC.

                                    By:  /s/ Peter W. Knipe   (SEAL)
                                    Print Name:  Peter W. Knipe
                                    Title: CFO


                                    STV CONSTRUCTION, INC.

                                    By:  /s/ Peter W. Knipe   (SEAL)
                                    Print Name:  Peter W. Knipe
                                    Title: CFO


                                    STV ARCHITECTS, INC.

                                    By:  /s/ Peter W. Knipe   (SEAL)
                                    Print Name:  Peter W. Knipe
                                    Title:  Secretary


                                    STV SILVER & ZISKIND ARCHITECTS, P.C.

                                    By:  /s/ Peter W. Knipe   (SEAL)
                                    Print Name:  Peter W. Knipe
                                    Title:  Secretary



                [SIGNATURES ARE CONTINUED ON THE FOLLOWING PAGE]

<PAGE>
STV Group, Incorporated
February 3, 2000
Page 9



                                    STV ARCHITECTS, P.C.

                                    By:  /s/ Michael D. Garz  (SEAL)
                                    Print Name:  Michael D. Garz
                                    Title:  President




                         COMMITTED LINE OF CREDIT NOTE
                               (Index LIBOR Note)


$12,000,000.00                                                  February 3, 2000


FOR  VALUE  RECEIVED,  STV  GROUP,  INCORPORATED  and STV  INCORPORATED  and its
SUBSIDIARIES  listed on the attached  Schedule A (individually and collectively,
the  "Borrower"),  with an  address  at 205  West  Welsh  Drive,  Douglassville,
Pennsylvania  19518,  promises  to pay  to  the  order  of  PNC  BANK,  NATIONAL
ASSOCIATION  (the  "Bank"),  in lawful money of the United  States of America in
immediately  available  funds at its  offices  located  at 1600  Market  Street,
Philadelphia,  Pennsylvania,  19103,  or at such other  location as the Bank may
designate  from  time to time,  the  principal  sum of  TWELVE  MILLION  DOLLARS
($12,000,000.00) (the "Facility") or such lesser amount as may be advanced to or
for the benefit of the Borrower  hereunder,  together with interest  accruing on
the outstanding principal balance from the date hereof, as provided below:

1. Rate of Interest.  The principal amount outstanding under this Note will bear
interest  at a rate per annum  (computed  on the basis of  actual  days  elapsed
within a year consisting of 360 days) equal to the sum of (A) LIBOR plus (B) two
hundred (200) basis points (2.0%) (the "Applicable LIBOR"). The Applicable LIBOR
shall remain in effect until  adjusted by the Bank as of the first  calendar day
of each month, without notice to the Borrower.

For the purpose hereof, the following terms shall have the following meanings:

                           "Business Day" shall mean any day on which commercial
         banks settle payments in U.S. dollars in New York City and London other
         than a Saturday or Sunday or a legal holiday on which  commercial banks
         are  authorized or required to be closed for business in  Philadelphia,
         Pennsylvania.

                           "LIBOR" shall mean,  for all advances  outstanding at
         any time during any month,  the interest  rate per annum  determined by
         the Bank by  dividing  (the  resulting  quotient  rounded  upwards,  if
         necessary,  to the nearest  1/100th of 1%) (i) the  Published  Rate for
         such  month by (ii) a number  equal to 1.00  minus  the  LIBOR  Reserve
         Percentage.  As used  herein,  "Published  Rate" shall mean the rate of
         interest  published on the first Business Day of each month in The Wall
         Street  Journal  "Money  Rates"  listing  under  the  caption   "London
         Interbank Offered Rates" for a one month period (or, if no such rate is
         published  therein for any reason,  then such rate published therein on
         the most  recent  Business  Day prior to the  first day of such  month;
         provided,  that if no such rate of  interest is  published  therein for
         longer than 30 consecutive  days,  then the Published Rate shall be the
         eurodollar  rate  for a one  month  period,  as  published  in  another
         publication determined by the Bank).

                           "LIBOR  Reserve  Percentage"  shall mean the  maximum
         effective  percentage  in effect on such day as prescribed by the Board
         of  Governors  of the Federal  Reserve  System (or any  successor)  for
         determining the reserve requirements (including, without limitation,

<PAGE>


         supplemental, marginal and emergency reserve requirements) with respect
         to  eurocurrency   funding  (currently  referred  to  as  "Eurocurrency
         liabilities").

LIBOR shall be adjusted on the effective date of any change in the LIBOR Reserve
Percentage as of such  effective  date. The Bank shall give prompt notice to the
Borrower  of LIBOR as  determined  or  adjusted in  accordance  herewith,  which
determination shall be conclusive absent manifest error.

If the Bank determines (which determination shall be final and conclusive) that,
by reason of circumstances  affecting the eurodollar market generally,  deposits
in dollars (in the  applicable  amounts)  are not being  offered to banks in the
eurodollar  market for the  selected  term,  or adequate  means do not exist for
ascertaining  LIBOR,  then the Bank shall give notice  thereof to the  Borrower.
Thereafter,  until the Bank notifies the Borrower that the circumstances  giving
rise to such suspension no longer exist,  (a) the availability of the Applicable
LIBOR  shall be  suspended,  and (b) the  interest  rate for all  advances  then
bearing  interest under the Applicable LIBOR shall be converted on the first day
of the next calendar  month to a rate of interest per annum  (calculated  on the
basis of actual days elapsed within a year  consisting of 360 days) equal to the
Prime Rate (the  "Applicable Base Rate").  For purposes hereof,  the term "Prime
Rate" shall mean the rate  publicly  announced  by the Bank from time to time as
its prime rate. The Prime Rate is determined  from time to time by the Bank as a
means of pricing some loans to its borrowers.  The Prime Rate is not tied to any
external rate of interest or index, and does not necessarily  reflect the lowest
rate of  interest  actually  charged  by the  Bank to any  particular  class  or
category of customers.  If and when the Prime Rate changes, the rate of interest
with respect to any amounts  hereunder to which the Applicable Base Rate applies
will change automatically without notice to the Borrower,  effective on the date
of any such change.

In addition,  if, after the date of this Note, the Bank shall  determine  (which
determination shall be final and conclusive) that any enactment, promulgation or
adoption of or any change in any  applicable  law,  rule or  regulation,  or any
change  in  the  interpretation  or  administration  thereof  by a  governmental
authority,  central bank or comparable agency charged with the interpretation or
administration thereof, or compliance by the Bank with any guideline, request or
directive  (whether  or not  having  the  force of law) of any  such  authority,
central bank or comparable  agency shall make it unlawful or impossible  for the
Bank to make or maintain or fund loans bearing  interest based on the Applicable
LIBOR,  the Bank shall notify the Borrower.  Upon receipt of such notice,  until
the Bank  notifies  the  Borrower  that the  circumstances  giving  rise to such
determination  no longer apply,  (a) the  availability  of the Applicable  LIBOR
shall be  suspended,  and (b) the  interest  rate on all  advances  then bearing
interest  under the Applicable  LIBOR shall be converted to the Applicable  Base
Rate  either (i) on the first day of the next  calendar  month,  if the Bank may
lawfully  continue to maintain  advances at the Applicable LIBOR to such day, or
(ii)  immediately  if the Bank may not  lawfully  continue to maintain  advances
under the Applicable LIBOR.

In no event will the rate of interest  hereunder exceed the maximum rate allowed
by law.

2. Advances.  The Borrower may borrow,  repay and reborrow  hereunder  until the
Expiration  Date,  subject to the terms and conditions of this Note and the Loan
Documents (as defined  herein).  The "Expiration  Date" shall mean December ___,
2001, or such later date as may be designated by the Bank by written notice from
the Bank to the Borrower.  The Borrower acknowledges and agrees that in no event
will the Bank be under any  obligation  to extend or renew the  Facility or this
Note  beyond  the  Expiration  Date.  In no event  shall  the  aggregate  unpaid
principal  amount of  advances  under this Note  exceed the face  amount of this
Note.


                                      -2-
<PAGE>


3. Advance Procedures.  A request for advance made by telephone must be promptly
confirmed  in  writing  by such  method as the Bank may  require.  The  Borrower
authorizes  the Bank to accept  telephonic  requests for advances,  and the Bank
shall be  entitled  to rely upon the  authority  of any  person  providing  such
instructions.  The Borrower hereby  indemnifies and holds the Bank harmless from
and  against  any and all  damages,  losses,  liabilities,  costs  and  expenses
(including  reasonable  attorneys'  fees and  expenses)  which  may  arise or be
created by the  acceptance of such  telephone  requests or making such advances.
The Bank will  enter on its books and  records,  which  entry  when made will be
presumed correct,  the date and amount of each advance,  as well as the date and
amount of each payment made by the Borrower.

4. Payment Terms. Accrued interest will be due and payable monthly in arrears on
the first day of each month,  beginning  with the  payment due on  _____________
___, 2000. The outstanding principal balance and any accrued but unpaid interest
shall be due and payable on the Expiration Date.

If any payment under this Note shall become due on a Saturday,  Sunday or public
holiday under the laws of the State where the Bank's office  indicated  above is
located, such payment shall be made on the next succeeding business day and such
extension of time shall be included in  computing  interest in  connection  with
such payment.  The Borrower hereby  authorizes the Bank to charge the Borrower's
deposit  account  at the  Bank for any  payment  when  due  hereunder.  Payments
received  will be applied to charges,  fees and expenses  (including  attorneys'
fees),  accrued interest and principal in any order the Bank may choose,  in its
sole discretion.

5. Late  Payments;  Default Rate.  If the Borrower  fails to make any payment of
principal,  interest or other amount  coming due pursuant to the  provisions  of
this Note within 15 calendar days of the date due and payable, the Borrower also
shall pay to the Bank a late charge  equal to the lesser of five percent (5%) of
the amount of such  payment or $100.00 (the "Late  Charge").  Such 15 day period
shall not be  construed  in any way to extend the due date of any such  payment.
Upon maturity,  whether by acceleration,  demand or otherwise, and at the Bank's
option upon the occurrence of any Event of Default (as hereinafter  defined) and
during the  continuance  thereof,  this Note shall bear  interest  at a rate per
annum (based on a year of 360 days and actual days  elapsed)  which shall be two
percentage  points  (2%) in excess of the  interest  rate in effect from time to
time  under  this Note but not more than the  maximum  rate  allowed by law (the
"Default  Rate").  The  Default  Rate  shall  continue  to apply  whether or not
judgment  shall be entered on this Note.  Both the Late  Charge and the  Default
Rate are imposed as  liquidated  damages for the purpose of defraying the Bank's
expenses  incident to the handling of delinquent  payments,  but are in addition
to,  and  not in lieu  of,  the  Bank's  exercise  of any  rights  and  remedies
hereunder,  under the other Loan Documents or under applicable law, and any fees
and expenses of any agents or attorneys which the Bank may employ.  In addition,
the Default Rate  reflects the  increased  credit risk to the Bank of carrying a
loan that is in default.  The  Borrower  agrees that the Late Charge and Default
Rate are reasonable  forecasts of just  compensation  for anticipated and actual
harm incurred by the Bank,  and that the actual harm incurred by the Bank cannot
be estimated with certainty and without difficulty.

6. Prepayment.  The indebtedness  evidenced by this Note may be prepaid in whole
or in part at any time without penalty.

7. Yield  Protection.  The  Borrower  shall pay to the Bank,  on written  demand
therefor,  together with the written evidence of the justification therefor, all
direct costs incurred, losses suffered or payments made


                                      -3-
<PAGE>


by Bank by  reason  of any  change in law or  regulation  or its  interpretation
imposing any reserve,  deposit,  allocation of capital,  or similar  requirement
(including  without  limitation,  Regulation  D of the Board of Governors of the
Federal  Reserve  System)  on the  Bank,  its  holding  company  or any of their
respective  assets.  The Bank's  determination  of an amount  payable under this
paragraph  shall,  in the absence of manifest  error, be conclusive and shall be
payable on demand.

8.  Other  Loan  Documents.  This  Note is issued  in  connection  with a Letter
Agreement  between the Borrower and the Bank dated on or before the date hereof,
and the other  agreements  and  documents  executed in  connection  therewith or
referred to therein, the terms of which are incorporated herein by reference (as
amended,  modified  or  renewed  from  time  to  time,  collectively  the  "Loan
Documents"),  and is secured by the property described in the Loan Documents (if
any) and by such  other  collateral  as  previously  may have been or may in the
future be granted to the Bank to secure this Note.  All  capitalized  terms used
herein and not otherwise defined herein have the meanings given them in the Loan
Documents.

9. Events of Default.  The  occurrence  of any of the  following  events will be
deemed to be an "Event of Default"  under this Note:  (i) the  nonpayment of any
principal,  interest or other  indebtedness  under this Note within two (2) days
after the date when due; (ii) the  occurrence of any event of default or default
and the lapse of any notice or cure period under any Loan  Document or any other
debt, liability or obligation to the Bank of any Obligor; (iii) the filing by or
against any Obligor of any proceeding in bankruptcy,  receivership,  insolvency,
reorganization,  liquidation, conservatorship or similar proceeding (and, in the
case of any such proceeding  instituted against any Obligor,  such proceeding is
not dismissed or stayed  within 60 days of the  commencement  thereof,  provided
that the Bank shall not be  obligated  to advance  additional  funds during such
period); (iv) any assignment by any Obligor for the benefit of creditors, or any
levy,  garnishment,  attachment or similar  proceeding is instituted against any
property of any Obligor held by or deposited  with the Bank;  (v) a default with
respect  to any other  indebtedness  of any  Obligor in excess of  $250,000  for
borrowed  money,  if the  effect  of such  default  is to  cause or  permit  the
acceleration  of  such  debt;  (vi)  the  commencement  of  any  foreclosure  or
forfeiture  proceeding,  execution or attachment against any collateral securing
the obligations of any Obligor to the Bank; (vii) any material adverse change in
the business, assets,  operations,  financial condition or results of operations
of the Obligors, taken as a whole; (viii) the Obligors cease doing business as a
going concern; (ix) any change shall occur in the equity ownership of STV Group,
Incorporated which results in its current employee stock option plan owning less
than sixty percent (60%) of the voting control of STV Group,  Incorporated;  (x)
any  representation  or  warranty  made by any  Obligor  to the Bank in any Loan
Document, or any other documents now or in the future evidencing or securing the
obligations of any Obligor to the Bank, is false, erroneous or misleading in any
material adverse respect;  (xi) any Obligor's  failure to observe or perform any
of the Financial Reporting Covenants contained in Section A of Exhibit A to that
certain  Letter  Agreement  dated  February ___,  2000 (as amended,  modified or
renewed  from time to time,  the  "Letter  Agreement"),  or any of the  Negative
Covenants contained in Section C of Exhibit A to the Letter Agreement, provided,
however,  that if such failure is capable of being cured and  Borrower  promptly
undertakes to effect such cure,  such failure  shall not  constitute an Event of
Default  hereunder  unless it remains  uncured for a period of ten (10) days; or
(xii) any  Obligor's  failure  to  observe  or  perform  any  covenant  or other
agreement with the Bank  contained in any Loan Document  (other than as provided
in clause (xi) above) or any other documents now or in the future  evidencing or
securing the obligations of any Obligor to the Bank provided,  however,  that if
such  failure is capable of being  cured and  Borrower  promptly  undertakes  to
effect  such  cure,  such  failure  shall  not  constitute  an Event of  Default
hereunder  unless it remains  uncured for a period of thirty (30) days.  As used
herein, the term "Obligor" means any Borrower.


                                      -4-
<PAGE>


Upon  the  occurrence  of an Event of  Default:  (a) the Bank  shall be under no
further  obligation  to make  advances  hereunder;  (b) if an Event  of  Default
specified in clause (iii) or (iv) above shall occur,  the outstanding  principal
balance and accrued  interest  hereunder  together with any  additional  amounts
payable  hereunder shall be immediately due and payable without demand or notice
of any kind;  (c) if any other Event of Default  shall  occur,  the  outstanding
principal  balance and accrued interest  hereunder  together with any additional
amounts payable hereunder,  at the Bank's option and without demand or notice of
any kind, may be accelerated and become immediately due and payable;  (d) at the
Bank's option, this Note will bear interest at the Default Rate from the date of
the occurrence of the Event of Default;  and (e) the Bank may exercise from time
to time any of the rights and  remedies  available  under the Loan  Documents or
under applicable law.

10. Right of Setoff.  In addition to all liens upon and rights of setoff against
the Borrower's money, securities or other property given to the Bank by law, the
Bank shall have,  with respect to the  Borrower's  obligations to the Bank under
this Note and to the extent permitted by law, a contractual  possessory security
interest in and a contractual  right of setoff against,  and the Borrower hereby
assigns,  conveys,  delivers,  pledges  and  transfers  to the  Bank  all of the
Borrower's right, title and interest in and to, all of the Borrower's  deposits,
moneys,  securities  and other property now or hereafter in the possession of or
on deposit  with,  or in transit  to, the Bank or any other  direct or  indirect
subsidiary  of PNC Bank Corp.,  whether held in a general or special  account or
deposit, whether held jointly with someone else, or whether held for safekeeping
or otherwise, excluding, however, all IRA, Keogh, and trust accounts. Every such
security  interest and right of setoff may be exercised  without  demand upon or
notice to the Borrower.  Every such right of setoff shall be deemed to have been
exercised  immediately  upon the  occurrence  of an Event of  Default  hereunder
without any action of the Bank,  although  the Bank may enter such setoff on its
books and records at a later time.

11. Miscellaneous. All notices, demands, requests, consents, approvals and other
communications required or permitted hereunder must be in writing (except as may
be agreed  otherwise  above with  respect  to  borrowing  requests)  and will be
effective  upon  receipt.   Such  notices  and  other   communications   may  be
hand-delivered, sent by facsimile transmission with confirmation of delivery and
a copy sent by  first-class  mail,  or sent by nationally  recognized  overnight
courier service,  to the addresses for the Bank and the Borrower set forth above
or to such other  address  as either  may give to the other in writing  for such
purpose.  No delay or omission on the Bank's part to exercise any right or power
arising  hereunder will impair any such right or power or be considered a waiver
of any such right or power,  nor will the Bank's  action or inaction  impair any
such right or power.  No  modification,  amendment or waiver of any provision of
this  Note nor  consent  to any  departure  by the  Borrower  therefrom  will be
effective  unless made in a writing signed by the Bank.  The Borrower  agrees to
pay on demand, to the extent permitted by law, all reasonable costs and expenses
incurred  by the Bank in the  enforcement  of its rights in this Note and in any
security therefor,  including without limitation reasonable fees and expenses of
the Bank's  counsel.  If any  provision of this Note is found to be invalid by a
court,  all the other  provisions  of this Note  will  remain in full  force and
effect.  The  Borrower  and all other  makers and  indorsers of this Note hereby
forever  waive   presentment,   protest,   notice  of  dishonor  and  notice  of
non-payment.  The  Borrower  also waives all  defenses  based on  suretyship  or
impairment  of  collateral.  If this Note is executed by more than one Borrower,
the obligations of such persons or entities hereunder will be joint and several.
This Note  shall bind the  Borrower  and its  successors  and  assigns,  and the
benefits  hereof shall inure to the benefit of the Bank and its  successors  and
assigns; provided,  however, that the Borrower may not assign this Note in whole
or in part  without  the  Bank's  written  consent  and the Bank at any time may
assign this Note in whole or in part.


                                      -5-
<PAGE>


This Note has been  delivered  to and accepted by the Bank and will be deemed to
be made in the Commonwealth of  Pennsylvania.  THIS NOTE WILL BE INTERPRETED AND
THE RIGHTS AND LIABILITIES OF THE BANK AND THE BORROWER DETERMINED IN ACCORDANCE
WITH THE LAWS OF THE  COMMONWEALTH  OF  PENNSYLVANIA,  EXCLUDING ITS CONFLICT OF
LAWS  RULES.  The  Borrower  hereby   irrevocably   consents  to  the  exclusive
jurisdiction  of any state or federal  court in the county or judicial  district
where the Bank's  office  indicated  above is  located;  provided  that  nothing
contained in this Note will prevent the Bank from bringing any action, enforcing
any  award  or  judgment  or   exercising   any  rights   against  the  Borrower
individually,  against  any  security or against  any  property of the  Borrower
within any other county,  state or other foreign or domestic  jurisdiction.  The
Borrower  acknowledges  and  agrees  that the venue  provided  above is the most
convenient  forum for both the Bank and the  Borrower.  The Borrower  waives any
objection to venue and any  objection  based on a more  convenient  forum in any
action instituted under this Note.

12. WAIVER OF JURY TRIAL. THE BORROWER IRREVOCABLY WAIVES ANY AND ALL RIGHTS THE
BORROWER MAY HAVE TO A TRIAL BY JURY IN ANY ACTION,  PROCEEDING  OR CLAIM OF ANY
NATURE  RELATING TO THIS NOTE,  ANY DOCUMENTS  EXECUTED IN CONNECTION  WITH THIS
NOTE OR ANY  TRANSACTION  CONTEMPLATED  IN ANY OF SUCH  DOCUMENTS.  THE BORROWER
ACKNOWLEDGES THAT THE FOREGOING WAIVER IS KNOWING AND VOLUNTARY.

The Borrower  acknowledges that it has read and understood all the provisions of
this Note,  including the waiver of jury trial,  and has been advised by counsel
as necessary or appropriate.


WITNESS the due execution  hereof as a document under seal, as of the date first
written above, with the intent to be legally bound hereby.

WITNESS/ATTEST:                                STV GROUP, INCORPORATED

/s/ Lori Jo Berk                               By:  /s/ Peter W. Knipe    (SEAL)
Print Name:  Lori Jo Berk                      Print Name:  Peter W. Knipe
Title:  Admin. Asst.                           Title:  CFO


WITNESS/ATTEST:                                STV INCORPORATED

/s/ Lori Jo Berk                               By:  /s/ Peter W. Knipe    (SEAL)
Print Name:  Lori Jo Berk                      Print Name:  Peter W. Knipe
Title:  Admin. Asst.                           Title:  CFO



                [SIGNATURES ARE CONTINUED ON THE FOLLOWING PAGE]


                                      -6-
<PAGE>


WITNESS/ATTEST:                                STV CONSTRUCTION SERVICES, INC.

/s/ Lori Jo Berk                               By:  /s/ Peter W. Knipe    (SEAL)
Print Name:  Lori Jo Berk                      Print Name:  Peter W. Knipe
Title:  Admin. Asst.                           Title:  CFO


WITNESS/ATTEST:                                STV INTERNATIONAL, INC.

/s/ Lori Jo Berk                               By:  /s/ Peter W. Knipe    (SEAL)
Print Name:  Lori Jo Berk                      Print Name:  Peter W. Knipe
Title:  Admin. Asst.                           Title:  CFO


WITNESS/ATTEST:                                STV/ENVIRONMENTAL, INC.

/s/ Lori Jo Berk                               By:  /s/ Peter W. Knipe    (SEAL)
Print Name:  Lori Jo Berk                      Print Name:  Peter W. Knipe
Title:  Admin. Asst.                           Title:  CFO


WITNESS/ATTEST:                                STV SURVEYING, INC.

/s/ Lori Jo Berk                               By:  /s/ Peter W. Knipe    (SEAL)
Print Name:  Lori Jo Berk                      Print Name:  Peter W. Knipe
Title:  Admin. Asst.                           Title:  CFO


WITNESS/ATTEST:                                STV CONSTRUCTION, INC.

/s/ Lori Jo Berk                               By:  /s/ Peter W. Knipe    (SEAL)
Print Name:  Lori Jo Berk                      Print Name:  Peter W. Knipe
Title:  Admin. Asst.                           Title:  CFO


WITNESS/ATTEST:                                STV ARCHITECTS, INC.

/s/ Lori Jo Berk                               By:  /s/ Peter W. Knipe    (SEAL)
Print Name:  Lori Jo Berk                      Print Name:  Peter W. Knipe
Title:  Admin. Asst.                           Title:  Secretary



                [SIGNATURES ARE CONTINUED ON THE FOLLOWING PAGE]


                                      -7-
<PAGE>


WITNESS/ATTEST:                                STV SILVER & ZISKIND ARCHITECTS,
                                               P.C.

/s/ Lori Jo Berk                               By:  /s/ Peter W. Knipe    (SEAL)
Print Name:  Lori Jo Berk                      Print Name:  Peter W. Knipe
Title:  Admin. Asst.                           Title:  Secretary


WITNESS/ATTEST:                                STV ARCHITECTS, P.C.

/s/ Lori Jo Berk                               By:  /s/ Michael D. Garz   (SEAL)
Print Name:  Lori Jo Berk                      Print Name:  Michael D. Garz
Title:  Admin. Asst.                           Title:  President



                                      -8-





                               SECURITY AGREEMENT


         THIS SECURITY  AGREEMENT (this  "Agreement") is made as of this 3rd day
of February,  2000, by and between STV GROUP,  INCORPORATED and STV INCORPORATED
and its  SUBSIDIARIES  listed  on the  attached  Schedule  A  (individually  and
collectively,  the  "Grantor"),  with  an  address  at  205  West  Welsh  Drive,
Douglassville,  Pennsylvania  19518  and PNC  BANK,  NATIONAL  ASSOCIATION  (the
"Bank"),  with an  address at 1600  Market  Street,  Philadelphia,  Pennsylvania
19103.

         Under the terms  hereof,  the Bank  desires to obtain  and the  Grantor
desires to grant the Bank security for all of the  Obligations  (as  hereinafter
defined).

         NOW,  THEREFORE,  the  Grantor  and the Bank,  intending  to be legally
bound, hereby agree as follows:

         1.  Definitions.

                  (a)  "Collateral"  shall include all personal  property of the
Grantor, including the following, all whether now owned or hereafter acquired or
arising and  wherever  located:  (i)  accounts,  accounts  receivable,  contract
rights,  chattel paper, notes receivable,  securities  entitlements,  securities
accounts,  investment property,  depository accounts,  instruments and documents
(including warehouse receipts); (ii) goods of every nature, including inventory,
stock-in- trade, raw materials, work in process, items held for sale or lease or
furnished or to be furnished  under  contracts of sale or lease,  goods that are
returned, reclaimed or repossessed,  together with materials used or consumed in
the  Grantor's  business;  (iii)  equipment,   including  machinery,   vehicles,
furniture and fixtures; (iv) general intangibles, of every kind and description,
including  all  existing and future  customer  lists,  choses in action,  claims
(including claims for  indemnification or breach of warranty),  books,  records,
patents   and   patent   applications,   copyrights,   trademarks,   tradenames,
tradestyles, trademark applications, goodwill, blueprints, drawings, designs and
plans, trade secrets, contracts, licenses, license agreements, formulae, tax and
any other types of refunds, returned and unearned insurance premiums, rights and
claims under insurance  policies,  and computer  information,  software,  source
codes,  object codes,  records and data;  (v) all property of the Grantor now or
hereafter in the Bank's  possession or in transit to or from,  under the custody
or control of or on deposit with, the Bank or any affiliate  thereof,  including
deposit and other accounts;  (vi) all cash and cash  equivalents;  and (vii) all
cash  and  non-cash  proceeds  (including  insurance  proceeds)  of  all  of the
foregoing  property,  all  products  thereof and all  additions  and  accessions
thereto,  substitutions  therefor and replacements thereof. The Collateral shall
also include any and all other tangible or intangible property that is described
as being  part of the  Collateral  pursuant  to one or more  Riders to  Security
Agreement  that may be attached  hereto or  delivered  in  connection  herewith,
including the Rider to Security  Agreement -  Copyrights,  the Rider to Security
Agreement - Patents,  the Rider to Security Agreement - Trademarks and the Rider
to Security Agreement - Cash Collateral Account.


<PAGE>


                  (b) "Loan Documents" means this Agreement, that certain Letter
Agreement  dated  February 3, 2000,  that certain  Reimbursement  Agreement  for
Standby  Letter(s)  of Credit  dated  February  3,  2000,  and any and all notes
evidencing the Obligations,  as any of them may be amended, modified or restated
after the date  hereof.  Any  capitalized  terms used herein,  unless  otherwise
defined herein shall have the meanings given them in the Loan Documents.

                  (c) "Obligations"  shall include all loans,  advances,  debts,
liabilities,  obligations,  covenants  and duties  owing from the Grantor to the
Bank or to any other  direct or indirect  subsidiary  of PNC Bank Corp.,  of any
kind or nature, present or future (including any interest accruing thereon after
maturity, or after the filing of any petition in bankruptcy, or the commencement
of any insolvency,  reorganization  or like proceeding  relating to the Grantor,
whether or not a claim for post-filing or  post-petition  interest is allowed in
such  proceeding),  whether  or not  evidenced  by any note,  guaranty  or other
instrument, whether arising under any agreement, instrument or document, whether
or not for the payment of money,  whether  arising by reason of an  extension of
credit, opening of a letter of credit, loan, equipment lease or guarantee, under
any interest or currency swap, future,  option or other interest rate protection
or similar agreement,  or in any other manner, whether arising out of overdrafts
on deposit or other  accounts or electronic  funds  transfers  (whether  through
automated  clearing houses or otherwise) or out of the Bank's  non-receipt of or
inability to collect funds or otherwise not being made whole in connection  with
depository  transfer  check or other  similar  arrangements,  whether  direct or
indirect (including those acquired by assignment or participation),  absolute or
contingent,  joint or several,  due or to become due,  now existing or hereafter
arising, and any amendments, extensions, renewals or increases and all costs and
expenses of the Bank incurred in the documentation,  negotiation,  modification,
enforcement,  collection or otherwise in connection  with any of the  foregoing,
including reasonable attorneys' fees and expenses.

                  (d) "UCC" means the Uniform  Commercial  Code,  as adopted and
enacted  and as in  effect  from time to time in the  State  whose  law  governs
pursuant  to  the  Section  of  this  Agreement  entitled   "Governing  Law  and
Jurisdiction."  Terms used herein which are defined in the UCC and not otherwise
defined herein shall have the respective  meanings ascribed to such terms in the
UCC.

         2. Grant of Security Interest. To secure the Obligations,  the Grantor,
as debtor, hereby assigns and grants to the Bank, as secured party, a continuing
lien on and security interest in the Collateral.

         3. Change in Name or Locations.  The Grantor  hereby agrees that if the
location of the  Collateral  changes  from the  locations  listed on Exhibit "A"
hereto  and made part  hereof,  or if the  Grantor  changes  its name or form or
jurisdiction of organization,  or establishes a name in which it may do business
that is not listed as a  tradename  on Exhibit  "A"  hereto,  the  Grantor  will
immediately  notify  the  Bank in  writing  of the  additions  or  changes.  The
Grantor's  chief executive  office,  form of  organization  and  jurisdiction of
organization are also shown on Exhibit "A" hereto.


                                      -2-
<PAGE>


         4. Representations and Warranties. The Grantor represents, warrants and
covenants  to  the  Bank  that:  (a)  the  Grantor  has  good,   marketable  and
indefeasible  title to the  Collateral,  has not made any  prior  sale,  pledge,
encumbrance,  assignment or other disposition of any of the Collateral,  and the
Collateral is free from all encumbrances and rights of setoff of any kind except
the lien in favor of the Bank created by this  Agreement  and except any account
debtor's  right to withhold a  percentage  of its payment as a retainage  in the
ordinary  course of  business  pursuant  to the  agreement  giving  rise to such
account  ("Retainages");  (b) except as herein  provided,  the Grantor  will not
hereafter  without the Bank's prior  written  consent  sell,  pledge,  encumber,
assign or  otherwise  dispose  of any of the  Collateral  or permit any right of
setoff  (other  than  Retainages),  lien or security  interest to exist  thereon
except to the Bank;  (c) the  Grantor  will  defend the  Collateral  against all
claims and demands of all persons at any time  claiming the same or any interest
therein; (d) each account and general intangible,  if included in the definition
of Collateral,  is genuine and  enforceable in accordance with its terms and the
Grantor will defend the same against all claims,  demands,  setoffs  (other than
valid  Retainages) and  counterclaims at any time asserted;  and (e) at the time
any  account or general  intangible  becomes  subject  to this  Agreement,  such
account or general  intangible  will be a good and valid account  representing a
bona fide sale of goods or services by the Grantor and such goods will have been
shipped  to the  respective  account  debtors  or the  services  will  have been
performed for the  respective  account  debtors,  and no such account or general
intangible  will be subject to any claim for credit,  allowance or adjustment by
any  account  debtor  or  any  setoff,  defense  or  counterclaim,   other  than
Retainages.

         5. Grantor's Covenants. The Grantor covenants that it shall:

                  (a) from time to time and at all  reasonable  times  allow the
Bank, by or through any of its officers,  agents, attorneys, or accountants,  to
examine or inspect the Collateral, notify account debtors of the Bank's security
interest in accounts (if included in the  definition of  Collateral)  and obtain
valuations  and audits of the  Collateral,  at the Grantor's  expense,  wherever
located.  The  Grantor  shall do,  obtain,  make,  execute  and deliver all such
additional and further acts,  things,  deeds,  assurances and instruments as the
Bank may require to vest in and assure to the Bank its rights  hereunder  and in
or  to  the  Collateral,  and  the  proceeds  thereof,  including  waivers  from
landlords, warehousemen and mortgagees;

                  (b) keep the  Collateral in good order and repair at all times
and immediately  notify the Bank of any event causing a material loss or decline
in value of the Collateral,  whether or not covered by insurance, and the amount
of such loss or depreciation;

                  (c) only use or permit the Collateral to be used in accordance
with all applicable  federal,  state, county and municipal laws and regulations;
and

                  (d) have and  maintain  insurance at all times with respect to
all Collateral against risks of fire (including  so-called  extended  coverage),
theft,  sprinkler  leakage,  and  other  risks  (including  risk of flood if any
Collateral  is  maintained at a location in a flood hazard zone) as the Bank may
require,  in such form,  in such  amount,  for such  period and  written by such
companies as may be satisfactory to the Bank in its sole  discretion.  Each such
casualty insurance policy


                                      -3-
<PAGE>


shall  contain a standard  Lender's  Loss Payable  Clause issued in favor of the
Bank under which all losses  thereunder  shall be paid to the Bank as the Bank's
interest may appear.  Such policies shall  expressly  provide that the requisite
insurance  cannot be altered or canceled without at least thirty (30) days prior
written notice to the Bank and shall insure the Bank  notwithstanding the act or
neglect of the Grantor.  Upon the Bank's  demand,  the Grantor shall furnish the
Bank with  duplicate  original  policies of insurance or such other  evidence of
insurance as the Bank may require.  In the event of failure to provide insurance
as herein provided,  the Bank may, at its option,  obtain such insurance and the
Grantor  shall  pay to the  Bank,  on  demand,  the cost  thereof.  Proceeds  of
insurance may be applied by the Bank to reduce the  Obligations  or to repair or
replace Collateral, all in the Bank's sole discretion.

         6. Negative Pledge; No Transfer.  The Grantor will not sell or offer to
sell or  otherwise  transfer  or  grant  or allow  the  imposition  of a lien or
security  interest  upon the  Collateral  (except  for  sales of  inventory  and
collections of accounts in the Grantor's ordinary course of business) or use any
portion thereof in any manner inconsistent with this Agreement or with the terms
and conditions of any policy of insurance thereon.

         7.  Covenants for Accounts.  If accounts are included in the definition
of Collateral:

                  (a) The Grantor will, on the Bank's demand,  make notations on
its books and records showing the Bank's security interest and make available to
the Bank  shipping and delivery  receipts  evidencing  the shipment of the goods
that gave rise to an  account,  completion  certificates  or other  proof of the
satisfactory performance of services that gave rise to an account, a copy of the
invoice for each account and copies of any written  contract or order from which
an account  arose.  The  Grantor  shall  promptly  notify the Bank if an account
becomes  evidenced  or secured by an  instrument  or chattel  paper and upon the
Bank's  request,  will promptly  deliver any such instrument or chattel paper to
the Bank,  including any letter of credit  delivered to the Grantor to support a
shipment of inventory by the Grantor.

                  (b) The  Grantor  will  promptly  advise the Bank  whenever an
account  debtor refuses to retain or returns any goods from the sale of which an
account  arose  and will  comply  with any  instructions  that the Bank may give
regarding the sale or other disposition of such returns.  From time to time with
such frequency as the Bank may request,  the Grantor will report to the Bank all
credits given to account debtors on all accounts.

                  (c) Upon request of the Bank,  Grantor will immediately notify
the Bank if any account  arises out of contracts  with the United  States or any
department,  agency or instrumentality thereof, and will execute any instruments
and take any steps required by the Bank so that all monies due and to become due
under such contract  shall be assigned to the Bank and notice of the  assignment
given to and  acknowledged  by the  appropriate  government  agency or authority
under the Federal Assignment of Claims Act.

                  (d) At any time after the  occurrence  of an Event of Default,
and  without  notice to the  Grantor,  the Bank may direct any  persons  who are
indebted  to the  Grantor on any  Collateral  consisting  of accounts or general
intangibles to make payment directly to the Bank of the


                                      -4-
<PAGE>


amounts due. The Bank is authorized to give receipts to such account debtors for
any such  payments  and the account  debtors  will be  protected  in making such
payments  to the  Bank.  Upon the  Bank's  written  request,  the  Grantor  will
establish with the Bank and maintain a lockbox account ("Lockbox") with the Bank
and a depository account(s) ("Cash Collateral Account") with the Bank subject to
the  provisions of this  subparagraph  and such other related  agreements as the
Bank may  require,  and the Grantor  shall  notify its account  debtors to remit
payments  directly to the Lockbox.  Thereafter,  funds  collected in the Lockbox
shall be  transferred  to the Cash  Collateral  Account,  and  funds in the Cash
Collateral  Account  shall  be  applied  by  the  Bank,  daily,  to  reduce  the
outstanding Obligations.

         8. Further  Assurances.  At the Bank's  request,  the Grantor will join
with the Bank in  executing  one or more  financing,  continuation  or amendment
statements pursuant to the UCC in form satisfactory to the Bank and will pay the
cost of preparing and filing the same in all  jurisdictions in which such filing
is deemed by the Bank to be necessary or desirable in order to perfect, preserve
and protect its  security  interests.  The Grantor  authorizes  the Bank to file
financing, continuation or amendment statements pursuant to the UCC with respect
to all or any part of the  Collateral  without the  Grantor's  signature,  where
permitted by law. A carbon, photographic or other copy of this Agreement or of a
UCC  financing  statement  may  be  filed  as  and in  lieu  of a UCC  financing
statement. At the Bank's request, the Grantor will execute, in form satisfactory
to the Bank,  a Rider to Security  Agreement  -  Copyrights  (if any  Collateral
consists  of  registered  or  unregistered  copyrights),  a  Rider  to  Security
Agreement  -  Patents  (if  any   Collateral   consists  of  patents  or  patent
applications),  a Rider to Security  Agreement - Trademarks  (if any  Collateral
consists of trademarks,  tradenames,  tradestyles or trademark applications). If
any Collateral  consists of depository  accounts not maintained with the Bank or
one of its  affiliates,  or any securities  entitlement,  securities  account or
other investment property,  then at the Bank's request the Grantor will execute,
and will cause the depository institution or securities  intermediary upon whose
books and records  the  ownership  interest  of the  Grantor in such  Collateral
appears,  such Pledge  Agreements,  Notification and Control Agreements or other
agreements  as the Bank deems  necessary  in order to perfect  and  protect  its
security  interest  in  such  Collateral,  in  each  case  in a form  reasonably
satisfactory to the Bank.

         9. Events of Default.  The Grantor shall,  at the Bank's option,  be in
default under this Agreement  upon the happening of any of the following  events
or  conditions  (each,  an "Event of  Default"):  (a) any Event of  Default  (as
defined in any of the Obligations); (b) any default under any of the Obligations
that does not have a defined  set of  "Events of  Default"  and the lapse of any
notice or cure period provided in such Obligations with respect to such default;
(c) demand by the Bank under any of the Obligations  that have a demand feature;
(d) the  failure by the  Grantor to perform  any of its  obligations  under this
Agreement;  (e)  falsity,  inaccuracy  or material  breach by the Grantor of any
written  warranty,  representation or statement made or furnished to the Bank by
or on behalf of the Grantor;  (f) an uninsured material loss, theft,  damage, or
destruction to any of the Collateral,  or the entry of any judgment  against the
Grantor or any lien against or the making of any levy,  seizure or attachment of
or on the  Collateral;  (g) the  failure of the Bank to have a  perfected  first
priority security interest in the Collateral;  or (h) any indication or evidence
received  by the Bank that the  Grantor may have  directly  or  indirectly  been
engaged


                                      -5-
<PAGE>


in any type of activity  which,  in the Bank's  discretion,  might result in the
forfeiture of any property of the Grantor to any governmental  entity,  federal,
state or local.

         10.  Remedies.  Upon the occurrence of any such Event of Default and at
any time  thereafter,  the Bank  may  declare  all  Obligations  secured  hereby
immediately due and payable and shall have, in addition to any remedies provided
herein or by any  applicable  law or in equity,  all the  remedies  of a secured
party under the UCC. The Bank's  remedies  include,  but are not limited to, the
right to (a)  peaceably by its own means or with judicial  assistance  enter the
Grantor's premises and take possession of the Collateral without prior notice to
the  Grantor  or the  opportunity  for a  hearing,  (b)  render  the  Collateral
unusable,  (c) dispose of the Collateral on the Grantor's premises,  (d) require
the Grantor to assemble  the  Collateral  and make it available to the Bank at a
place designated by the Bank, and (e) notify the United States Postal Service to
send the  Grantor's  mail to the Bank.  Unless the  Collateral  is perishable or
threatens  to decline  speedily in value or is of a type  customarily  sold on a
recognized  market, the Bank will give the Grantor reasonable notice of the time
and place of any public sale thereof or of the time after which any private sale
or any other intended  disposition  thereof is to be made. The  requirements  of
commercially  reasonable  notice  shall  be met if  such  notice  is sent to the
Grantor  at  least  ten  (10)  days  before  the  time of the  intended  sale or
disposition.  Expenses of retaking,  holding, preparing for sale, selling or the
like shall include the Bank's  reasonable  attorney's  fees and legal  expenses,
incurred  or  expended  by the Bank to  enforce  any  payment  due it under this
Agreement either as against the Grantor, or in the prosecution or defense of any
action,  or concerning any matter growing out of or connection  with the subject
matter of this  Agreement  and the  Collateral  pledged  hereunder.  The Grantor
waives  all  relief  from all  appraisement  or  exemption  laws now in force or
hereafter enacted.

         11. Power of Attorney.  The Grantor  does hereby make,  constitute  and
appoint  any  officer  or  agent of the Bank as the  Grantor's  true and  lawful
attorney-in-fact,  with power to (a)  endorse  the name of the Grantor or any of
the Grantor's officers or agents upon any notes,  checks,  drafts, money orders,
or other  instruments  of  payment or  Collateral  that may come into the Bank's
possession in full or part payment of any Obligations;  (b) so long as any Event
of Default has  occurred  and is  continuing,  sue for,  compromise,  settle and
release all claims and disputes with respect to, the  Collateral;  and (c) sign,
for the Grantor, financing, continuation or amendment statements pursuant to the
UCC, or supplemental intellectual property security agreements;  granting to the
Grantor's said attorney full power to do any and all things necessary to be done
in and about the premises as fully and effectually as the Grantor might or could
do. The Grantor  hereby  ratifies all that said  attorney  shall  lawfully do or
cause to be done by virtue  hereof.  This power of attorney  is coupled  with an
interest, and is irrevocable.

         12. Payment of Expenses. At its option, with notice to the Grantor, the
Bank may discharge taxes,  liens,  security interests or such other encumbrances
as may  attach  to  the  Collateral,  may  pay  for  required  insurance  on the
Collateral  and may  pay for the  maintenance,  appraisal  or  reappraisal,  and
preservation of the Collateral,  as determined by the Bank to be necessary.  The
Grantor will reimburse the Bank on demand for any payment so made or any expense
incurred by the Bank pursuant to the foregoing authorization, and the Collateral
also will secure any advances or payments so made or expenses so incurred by the
Bank.


                                      -6-
<PAGE>


         13. Notices. All notices, demands,  requests,  consents,  approvals and
other communications required or permitted hereunder must be in writing and will
be effective  upon receipt.  Such notices and other  communications  may be hand
delivered,  sent by facsimile  transmission  with confirmation of delivery and a
copy  sent by  first-class  mail,  or sent by  nationally  recognized  overnight
courier  service,  to a party's address set forth above or to such other address
as any party may give to the other in writing for such purpose.

         14.  Preservation of Rights. No delay or omission on the Bank's part to
exercise  any right or power  arising  hereunder  will  impair any such right or
power or be considered a waiver of any such right or power,  nor will the Bank's
action or  inaction  impair  any such  right or power.  The  Bank's  rights  and
remedies  hereunder  are  cumulative  and not  exclusive  of any other rights or
remedies which the Bank may have under other agreements, at law or in equity.

         15. Illegality.  In case any one or more of the provisions contained in
this Agreement should be invalid,  illegal or unenforceable in any respect,  the
validity,  legality and  enforceability  of the remaining  provisions  contained
herein shall not in any way be affected or impaired thereby.

         16.  Changes in Writing.  No  modification,  amendment or waiver of any
provision  of  this  Agreement  nor  consent  to any  departure  by the  Grantor
therefrom  will be effective  unless made in a writing  signed by the Bank,  and
then such waiver or consent shall be effective only in the specific instance and
for the  purpose for which  given.  No notice to or demand on the Grantor in any
case will  entitle the  Grantor to any other or further  notice or demand in the
same, similar or other circumstance.

         17.  Entire  Agreement.  This  Agreement  (including  the documents and
instruments  referred to herein) constitutes the entire agreement and supersedes
all other prior agreements and  understandings,  both written and oral,  between
the parties with respect to the subject matter hereof.

         18.  Counterparts.  This  Agreement  may be  signed  in any  number  of
counterpart copies and by the parties hereto on separate  counterparts,  but all
such  copies  shall  constitute  one and the  same  instrument.  Delivery  of an
executed   counterpart   of  signature  page  to  this  Agreement  by  facsimile
transmission shall be effective as delivery of a manually executed  counterpart.
Any party so executing this Agreement by facsimile  transmission  shall promptly
deliver a manually  executed  counterpart,  provided  that any  failure to do so
shall  not  affect  the  validity  of  the  counterpart  executed  by  facsimile
transmission.

         19.  Successors  and Assigns.  This  Agreement will be binding upon and
inure to the benefit of the Grantor and the Bank and their respective successors
and assigns;  provided,  however, that the Grantor may not assign this Agreement
in whole or in part without the Bank's prior written consent and the Bank at any
time may assign this Agreement in whole or in part.


                                      -7-
<PAGE>


         20. Interpretation.  In this Agreement, unless the Bank and the Grantor
otherwise agree in writing,  the singular includes the plural and the plural the
singular;  words  importing any gender include the other genders;  references to
statutes   are  to  be  construed  as   including   all   statutory   provisions
consolidating,  amending or  replacing  the statute  referred  to; the word "or"
shall be deemed to  include  "and/or",  the words  "including",  "includes"  and
"include"  shall be deemed to be  followed  by the words  "without  limitation";
references to articles,  sections (or  subdivisions of sections) or exhibits are
to those of this Agreement unless otherwise indicated.  Section headings in this
Agreement  are  included  for  convenience  of  reference  only  and  shall  not
constitute a part of this Agreement for any other purpose.  If this Agreement is
executed by more than one Grantor,  the  obligations of such persons or entities
will be joint and several.

         21.  Indemnity.  The Grantor  agrees to indemnify each of the Bank, its
directors,  officers and employees  and each legal entity,  if any, who controls
the Bank (the "Indemnified Parties") and to hold each Indemnified Party harmless
from and against any and all claims, damages,  losses,  liabilities and expenses
(including  all fees and charges of internal or external  counsel  with whom any
Indemnified  Party may consult and all  expenses of  litigation  or  preparation
therefor) which any Indemnified Party may incur or which may be asserted against
any Indemnified  Party as a result of the execution of or performance under this
Agreement;  provided,  however, that the foregoing indemnity agreement shall not
apply to claims, damages,  losses,  liabilities and expenses solely attributable
to an Indemnified Party's gross negligence or willful misconduct.  The indemnity
agreement  contained  in this  Section  shall  survive the  termination  of this
Agreement. The Grantor may participate at its expense in the defense of any such
claim.

         22. Governing Law and  Jurisdiction.  This Agreement has been delivered
to and accepted by the Bank and will be deemed to be made in the Commonwealth of
Pennsylvania.  THIS AGREEMENT WILL BE INTERPRETED AND THE RIGHTS AND LIABILITIES
OF THE PARTIES HERETO DETERMINED IN ACCORDANCE WITH THE LAWS OF THE COMMONWEALTH
OF  PENNSYLVANIA,  EXCEPT  THAT THE LAWS OF THE STATE  WHERE ANY  COLLATERAL  IS
LOCATED (IF DIFFERENT FROM THE  COMMONWEALTH OF  PENNSYLVANIA)  SHALL GOVERN THE
CREATION,  PERFECTION  AND  FORECLOSURE  OF THE LIENS CREATED  HEREUNDER ON SUCH
PROPERTY OR ANY INTEREST THEREIN. The Grantor hereby irrevocably consents to the
exclusive  jurisdiction  of any state or federal court in the county or judicial
district  where the Bank's  office  indicated  above is located;  provided  that
nothing  contained in this  Agreement  will  prevent the Bank from  bringing any
action,  enforcing  any award or judgment or exercising  any rights  against the
Grantor  individually,  against  any  security  or against  any  property of the
Grantor   within  any  other   county,   state  or  other  foreign  or  domestic
jurisdiction.  The Bank and the Grantor agree that the venue  provided  above is
the most convenient forum for both the Bank and the Grantor.  The Grantor waives
any objection to venue and any objection based on a more convenient forum in any
action instituted under this Agreement.

         23. WAIVER OF JURY TRIAL.  EACH OF THE GRANTOR AND THE BANK IRREVOCABLY
WAIVES  ANY AND  ALL  RIGHT  IT MAY  HAVE  TO A  TRIAL  BY  JURY IN ANY  ACTION,
PROCEEDING  OR CLAIM OF ANY NATURE  RELATING TO THIS  AGREEMENT,  ANY  DOCUMENTS
EXECUTED IN CONNECTION  WITH THIS AGREEMENT OR ANY  TRANSACTION  CONTEMPLATED IN
ANY OF SUCH


                                      -8-
<PAGE>


DOCUMENTS.  THE GRANTOR AND THE BANK  ACKNOWLEDGE  THAT THE FOREGOING  WAIVER IS
KNOWING AND VOLUNTARY.

         24.  Additional  Provisions.  The following  shall be excluded from the
definition of Collateral: N/A.

The following additional  provisions are made a part of this Security Agreement:
None.


WITNESS the due execution  hereof as a document under seal, as of the date first
written above.

                                               BORROWER:

WITNESS/ATTEST:                                STV GROUP, INCORPORATED

/s/ Lori Jo Berk                               By:  /s/ Peter W. Knipe    (SEAL)
Print Name:  Lori Jo Berk                      Print Name:  Peter W. Knipe
Title:  Admin. Asst.                           Title:  CFO


WITNESS/ATTEST:                                STV INCORPORATED

/s/ Lori Jo Berk                               By:  /s/ Peter W. Knipe    (SEAL)
Print Name:  Lori Jo Berk                      Print Name:  Peter W. Knipe
Title:  Admin. Asst.                           Title:  CFO


WITNESS/ATTEST:                                STV CONSTRUCTION SERVICES, INC.

/s/ Lori Jo Berk                               By:  /s/ Peter W. Knipe    (SEAL)
Print Name:  Lori Jo Berk                      Print Name:  Peter W. Knipe
Title:  Admin. Asst.                           Title:  CFO


WITNESS/ATTEST:                                STV INTERNATIONAL, INC.

/s/ Lori Jo Berk                               By:  /s/ Peter W. Knipe    (SEAL)
Print Name:  Lori Jo Berk                      Print Name:  Peter W. Knipe
Title:  Admin. Asst.                           Title:  CFO


                [SIGNATURES ARE CONTINUED ON THE FOLLOWING PAGE]


                                      -9-
<PAGE>


WITNESS/ATTEST:                                STV/ENVIRONMENTAL, INC.

/s/ Lori Jo Berk                               By:  /s/ Peter W. Knipe    (SEAL)
Print Name:  Lori Jo Berk                      Print Name:  Peter W. Knipe
Title:  Admin. Asst.                           Title:  CFO


WITNESS/ATTEST:                                STV SURVEYING, INC.

/s/ Lori Jo Berk                               By:  /s/ Peter W. Knipe    (SEAL)
Print Name:  Lori Jo Berk                      Print Name:  Peter W. Knipe
Title:  Admin. Asst.                           Title:  CFO


WITNESS/ATTEST:                                STV CONSTRUCTION, INC.

/s/ Lori Jo Berk                               By:  /s/ Peter W. Knipe    (SEAL)
Print Name:  Lori Jo Berk                      Print Name:  Peter W. Knipe
Title:  Admin. Asst.                           Title:  CFO


WITNESS/ATTEST:                                STV ARCHITECTS, INC.

/s/ Lori Jo Berk                               By:  /s/ Peter W. Knipe    (SEAL)
Print Name:  Lori Jo Berk                      Print Name:  Peter W. Knipe
Title:  Admin. Asst.                           Title:  Secretary


WITNESS/ATTEST:                                STV SILVER & ZISKIND ARCHITECTS,
                                               P.C.

/s/ Lori Jo Berk                               By:  /s/ Peter W. Knipe    (SEAL)
Print Name:  Lori Jo Berk                      Print Name:  Peter W. Knipe
Title:  Admin. Asst.                           Title:  Secretary


WITNESS/ATTEST:                                STV ARCHITECTS, P.C.

/s/ Lori Jo Berk                               By:  /s/ Michael D. Garz   (SEAL)
Print Name:  Lori Jo Berk                      Print Name:  Michael D. Garz
Title:  Admin. Asst.                           Title:  President


                                      -10-

                             REIMBURSEMENT AGREEMENT
                         FOR STANDBY LETTER(S) OF CREDIT


         THIS  REIMBURSEMENT  AGREEMENT  FOR STANDBY  LETTER(S)  OF CREDIT (this
"Agreement")  is made  as of  this  3rd day of  February,  2000,  by STV  GROUP,
INCORPORATED and STV  INCORPORATED  and its SUBSIDIARIES  listed on the attached
Schedule A (individually and collectively, the "Applicant"),  with an address at
205 West Welsh Drive,  Douglassville,  Pennsylvania  19518 in favor of PNC BANK,
NATIONAL  ASSOCIATION (the "Bank"),  with an address at 237 Fifth Avenue,  Third
Floor  Annex,  Pittsburgh,  PA  15222.  From  time  to  time  by  submitting  an
application on a form approved by the Bank (an "Application"), the Applicant may
request the Bank to issue one or more letters of credit (each, a "Credit").  The
Bank may issue any such Credit,  but the Bank shall have no  obligation to do so
unless  otherwise  agreed in writing.  The  Applicant  agrees that the following
terms and conditions shall apply in the event the Bank issues any Credit:


         1.  Definitions  and  Interpretation.  (a) In addition to terms defined
elsewhere  in this  Agreement:  "Base Rate" means a  fluctuating  rate per annum
equal to the greater of (i) the interest rate per annum  announced  from time to
time by the Bank as its then prime  rate,  which rate may not be the lowest rate
then being charged commercial borrowers by the Bank; or (ii) the rate applicable
to overnight federal funds transactions,  as reasonably  determined by the Bank,
plus .50%;  "Business Day" means any day other than a Saturday,  Sunday or other
day on which banks in Pittsburgh,  Pennsylvania,  or any other city of which the
Bank may give the Applicant notice from time to time, are authorized or required
by law to close;  "Dollar  Equivalent"  means,  with respect to an amount in any
currency other than U.S.  dollars,  as of any date,  the amount of U.S.  dollars
into which such amount in such  currency  may be  converted  at the spot rate at
which U.S.  dollars are offered by the Bank in  Pittsburgh  for such currency at
approximately  11:00 a.m.,  Prevailing Time, on such date, plus all actual costs
of settlement,  including  amounts  incurred by the Bank to comply with currency
exchange requirements of any Governmental  Authority;  "Governmental  Authority"
means any de facto or de jure domestic or foreign government,  court,  tribunal,
agency,  or other purported  authority;  "Prevailing  Time" means the prevailing
time in Pittsburgh,  Pennsylvania  (or any other city of which the Bank may have
given the  Applicant  notice) on the date in question;  "Taxes" means all taxes,
fees, duties, levies, imposts,  deductions,  charges or withholdings of any kind
(other than taxes on the Bank's net income); and "UCP" means the Uniform Customs
and Practice for Documentary Credits (1993 Revision),  International  Chamber of
Commerce Publication No. 500, and any subsequent official revision thereof.

         (b) If this  Agreement is signed by two or more persons,  each shall be
deemed to make to the Bank all the  representations,  warranties  and  covenants
contained herein, and each shall be jointly and severally liable hereunder.  Any
reference  herein to this  Agreement,  an  Application,  a Credit,  or any other
instrument,  agreement or document  related hereto or thereto shall be deemed to
refer to all  amendments,  modifications,  extensions  and  renewals  hereof and
thereof. Except to the extent the context clearly otherwise requires,  terms not
defined herein shall have the

<PAGE>


respective meanings ascribed to them by the UCP or, if not defined therein, then
by  relevant   provisions  of  the  Uniform   Commercial  Code  (the  "UCC")  of
Pennsylvania or such other jurisdiction of which the Bank may give the Applicant
notice,  with the  definitions  of  Article  5 of the UCC  controlling  over any
conflicting  definitions in other UCC Articles.  Determinations made by the Bank
pursuant to the terms hereof shall be conclusive absent manifest error.


         2.  Payments.  (a) The Bank will  notify  Applicant  of any  demand for
payment made under a Credit,  and the Applicant  will pay to the Bank the amount
to be paid by the Bank with respect to each draft or other  payment  demand made
under a Credit no later than 10 a.m.,  Prevailing Time, on the date such payment
is to be made by the  Bank,  or such  earlier  time as the Bank  may  reasonably
require.  If a Credit  calls for the  delivery by the Bank of an item other than
money,  the Applicant  shall  deliver or cause to be delivered  such item to the
Bank at such time,  in advance of the time the Bank is to deliver such item,  as
the Bank may reasonably require.

         (b) The  Applicant  will pay to the Bank  upon  receipt  of the  Bank's
invoice  therefor (i) interest on all amounts payable to the Bank hereunder from
the date due to the date of  payment,  at the  Base  Rate  plus 4% (or,  if this
Agreement is delivered in  connection  with a separate  credit  agreement,  loan
agreement,  promissory note or other agreement governing the payment of interest
by the Applicant to the Bank, then at the rate of interest applicable  following
the  occurrence  of an event of default  thereunder);  provided that in no event
shall the  Applicant  pay  hereunder  interest  in excess  of the  maximum  rate
permitted by applicable law; (ii) the Bank's fees as separately agreed to by the
Applicant and the Bank, as well as the customary  commissions  and other charges
regularly  charged by the Bank for letters of credit;  and (iii) all charges and
expenses paid or incurred by the Bank or any of its correspondents in connection
with this  Agreement  or any Credit,  including  all  reasonable  legal fees and
expenses,  whether of  internal or external  counsel to the Bank.  All  periodic
interest,  fees and  commissions  shall be calculated on the basis of the actual
days  elapsed in a 360 day year,  and interest  shall  continue to accrue at the
applicable  rate set forth herein  notwithstanding  one or more  defaults or the
entry of any judgment.

         (c) All amounts payable hereunder by the Applicant shall be paid to the
Bank at its  address set forth above or at such other place as the Bank may give
notice  from  time to time,  in  immediately  available  funds  in the  currency
specified  by  the  Bank,  without  set  off,  defense,  recoupment,  deduction,
cross-claim  or  counterclaim  of any kind;  and free and clear of, and  without
deduction  for, any present or future Taxes.  If the Bank or the Applicant  pays
any Taxes,  whether or not correctly or legally  assessed,  the amounts  payable
hereunder shall be increased so that,  after the payment of such Taxes, the Bank
shall have  received an amount equal to the sum the Bank would have received had
no such Taxes been paid. If any amount  payable  hereunder is  denominated  in a
currency  other than U.S.  dollars,  the  Applicant  shall make  payment in such
currency or, at the Bank's option,  shall pay the Dollar Equivalent  thereof. To
effect  any  payment  due  hereunder,  the Bank may debit any  account  that the
Applicant may have with the Bank or any of its affiliates.


                                      -2-
<PAGE>


         3. Nature of Obligations.  (a) The Applicant's  obligations to the Bank
under this Agreement are absolute,  unconditional and irrevocable,  and shall be
paid and performed in accordance with the terms hereof  irrespective of any act,
omission, event or condition, including, without limitation (i) the form of, any
lack  of  power  or  authority  of any  signer  of,  or the  lack  of  validity,
sufficiency,  accuracy,  enforceability  or  genuineness of (or any defect in or
forgery  of any  signature  or  endorsement  on) any  draft,  demand,  document,
certificate or instrument  presented in connection with any Credit, or any fraud
or alleged fraud in connection with any Credit or any obligation  underlying any
Credit,  in each case, even if the Bank or any of its  correspondents  have been
notified thereof; (ii) any claim of breach of warranty that might be made by the
Applicant or the Bank against any  beneficiary of a Credit,  or the existence of
any claim, set off,  recoupment,  counterclaim,  cross-claim,  defense, or other
right that the  Applicant  may at any time have  against  any  beneficiary,  any
successor  beneficiary,  any transferee or assignee of the proceeds of a Credit,
the Bank or any correspondent or agent of the Bank, or any other person, however
arising;  (iii) any acts or omissions by, or the solvency of, any beneficiary of
any Credit,  or any other person having a role in any  transaction or obligation
relating  to a Credit;  (iv) any  failure by the Bank to issue any Credit in the
form  requested by the Applicant,  unless the Bank receives  written notice from
the Applicant of such failure within one Business Day after the Applicant  shall
have received (by facsimile transmission or otherwise) a copy of such Credit and
such error is  material;  and (v) any action or omission  (including  failure or
compulsion to honor a  presentation  under any Credit) by the Bank or any of its
correspondents  in connection with a Credit,  draft or other demand for payment,
document,  or  any  property  relating  to a  Credit,  and  resulting  from  any
censorship,  law,  regulation,   order,  control,   restriction,  or  the  like,
rightfully or wrongly exercised by any Governmental Authority, or from any other
cause beyond the reasonable control of the Bank or any of its correspondents, or
for any loss or damage to the Applicant or to anyone else, or to any property of
the Applicant or anyone else, resulting from any such action or omission.

         (b) The Bank is  authorized  to honor any  presentation  under a Credit
without  regard to, and without any duty on the Bank's part to inquire into, any
transaction  or  obligation   underlying   such  Credit,   or  any  disputes  or
controversies  between the Applicant  and any  beneficiary  of a Credit,  or any
other person,  notwithstanding  that the Bank may have assisted the Applicant in
the  preparation  of the  wording  of any  Credit or  documents  required  to be
presented thereunder or that the Bank may be aware of any underlying transaction
or obligation or be familiar with any of the parties thereto.

         (c) The Applicant agrees that any action or omission by the Bank or any
of its  correspondents in connection with any Credit or presentation  thereunder
shall be binding on the  Applicant  and shall not result in any liability to the
Bank or any of its  correspondents  in the  absence of the gross  negligence  or
willful  misconduct  of  the  Bank.  Without  limiting  the  generality  of  the
foregoing,  the Bank and each of its  correspondents (i) may rely on any oral or
other communication  believed in good faith by the Bank or such correspondent to
have been  authorized or given by or on behalf of the Applicant;  (ii) may honor
any presentation if the documents  presented appear on their face  substantially
to comply with the terms and conditions of the relevant Credit;  (iii) shall not
be liable to the Applicant for any  consequential,  punitive or special damages,
or for any damages resulting from any change in the value of any property


                                      -3-
<PAGE>


relating to a Credit; (iv) may honor a previously dishonored  presentation under
a Credit,  whether such  dishonor  was  pursuant to a court order,  to settle or
compromise any claim of wrongful dishonor,  or otherwise,  and shall be entitled
to reimbursement  to the same extent as if such  presentation had initially been
honored,  together with any interest paid by the Bank; (v) may honor any drawing
that is  payable  upon  presentation  of a  statement  advising  negotiation  or
payment, upon receipt of such statement (even if such statement indicates that a
draft or other document is being separately delivered),  and shall not be liable
for any failure of any such draft or other document to arrive,  or to conform in
any way with the  relevant  Credit;  and (vi) may pay any paying or  negotiating
bank  claiming  that it  rightfully  honored  under the laws or practices of the
place where such bank is located.

         (d) If the  Applicant  or any other person seeks to delay or enjoin the
honor by the Bank of a  presentation  under a  Credit,  the Bank  shall  have no
obligation to delay or refuse to honor the presentation until validly so ordered
by a court of competent jurisdiction.


         4. Set Off. The  Applicant  grants the Bank a right of set off against,
to the fullest extent permitted under applicable law, all of the Applicant's (a)
property  relating to any Credit;  (b) property  relating to any  transaction or
obligation  underlying  a Credit;  and (c)  property  in the  possession  of, on
deposit  with, or in transit to, the Bank,  now or hereafter,  regardless of how
obtained or held (whether in a general or special account or deposit, jointly or
with someone else, in  safekeeping,  or otherwise).  The Bank's right of set off
may be exercised without demand on or notice to the Applicant. The Bank shall be
deemed to have exercised its right of set off immediately upon the occurrence of
an Event of Default,  although  the Bank may enter such set off on its books and
records at a later time. The Applicant  waives mutuality and maturity of debt in
connection with such right of set off. The Applicant agrees from time to time to
deliver to the Bank, on demand, such security or additional security as the Bank
may require to further secure the Applicant's obligations hereunder.


         5. Representations,  Warranties,  Covenants.  The Applicant represents,
warrants,  and covenants that (a) if not a natural person, the Applicant is duly
organized,  validly  existing  and  in  good  standing  under  the  laws  of the
jurisdiction  of its  organization  and duly  qualified  to do business in those
jurisdictions  in which its  ownership of property or the nature of its business
activities  makes  such  qualification  necessary;  (b)  the  Applicant  has the
requisite  power and  authority  to execute and deliver  this  Agreement  and to
perform its obligations hereunder;  and all such action has been duly authorized
by all  necessary  proceedings  on the  Applicant's  part,  and  neither now nor
hereafter shall contravene or result in a breach of any organizational  document
of  the  Applicant,  any  agreement,  document,  or  instrument  binding  on the
Applicant  or its  property,  or any law,  treaty,  regulation,  or order of any
Governmental  Authority, or require any notice, filing, or other action to or by
any Governmental  Authority;  (c) all financial statements and other information
received  from the  Applicant  by the Bank prior to the date  hereof  fairly and
accurately present its financial condition in accordance with generally accepted
accounting  principles,  and there shall occur no material adverse change in the
Applicant's  financial  condition or business  operations since the date hereof;
(d) from time to time, the Applicant shall


                                      -4-
<PAGE>


execute and deliver such further  instruments and agreements and take and permit
such further actions as may be reasonably  necessary to carry out the provisions
and purposes of this Agreement, and the Applicant shall provide such evidence of
compliance  with the  terms  hereof  and such  financial  statements  and  other
information  concerning the  Applicant's  financial  condition  and/or  business
operations as the Bank may  reasonably  request;  and (e) the Applicant and each
transaction  and  obligation  underlying  each  Credit  are and shall  remain in
compliance with all laws,  treaties,  rules, and regulations of any Governmental
Authority,  including,  without  limitation,  foreign exchange  control,  United
States foreign assets control, and currency reporting laws and regulations,  now
or hereafter applicable.


         6. Events of Default.  The  occurrence  of any of the  following  is an
"Event of Default"  hereunder:  (a) the Applicant's  failure to pay when due any
obligation  to the  Bank  or  any of its  affiliates  under  this  Agreement  or
otherwise;  (b) the Applicant's  failure to perform or observe any other term or
covenant of this Agreement,  or any representation or warranty contained in this
Agreement  or in any  document  given  now or  hereafter  by  the  Applicant  in
connection  herewith is materially  false,  erroneous,  or  misleading;  (c) the
occurrence  of any event of default  or  default  and the lapse of any notice or
cure period under any other debt,  liability or  obligation  of the Applicant to
the  Bank  or any of its  affiliates;  (d) the  failure  to pay or  perform  any
material  obligation  to any  other  person if such  failure  may cause any such
obligation  to be due or  performable  immediately;  (e) any levy,  garnishment,
attachment, or similar proceeding is instituted against the Applicant's property
in  possession  of, on  deposit  with,  or in  transit  to,  the  Bank;  (f) the
Applicant's  dissolution or  termination,  or the  institution by or against the
Applicant  or any of its  property of any  proceeding  relating  to  bankruptcy,
receivership,   insolvency,   reorganization,    liquidation,   conservatorship,
foreclosure,  execution,  attachment,  garnishment,  levy,  assignment  for  the
benefit of creditors, relief of debtors, or similar proceeding (and, in the case
of any such proceeding instituted against the Applicant,  such proceeding is not
dismissed or stayed within 30 days of the commencement  thereof);  (g) the entry
of a material  final  judgment  against  the  Applicant  and the  failure of the
Applicant to discharge the judgment  within 10 days of the final entry  thereof;
(h) any material adverse change in the business, assets,  operations,  financial
condition  or results of  operations  of the  Applicant;  (i) the death or legal
incompetency  of an individual  Applicant or, if the Applicant is a partnership,
the death or legal  incompetency  of any  individual  general  partner;  (j) the
occurrence  of any of the above  events with respect to any person which has now
or hereafter  guarantied or provided any collateral  for any of the  Applicant's
obligations  hereunder;  or (k) any  guarantee,  or any document,  instrument or
agreement   purporting  to  provide  the  Bank  security  for  the   Applicant's
obligations hereunder shall be challenged,  repudiated, or unenforceable for any
reason.


         7.  Remedies.  Upon the occurrence of any Event of Default (a) the Bank
may exercise  from time to time any of the rights and remedies  available to the
Bank  under  this  Agreement,  under any other  documents  now or in the  future
evidencing  or  securing  obligations  of the  Applicant  to the Bank,  or under
applicable law, and all such remedies shall be cumulative and not exclusive; and
(b) the Applicant  shall promptly  deliver to the Bank in immediately  available
funds,  as collateral for any and all  obligations of the Applicant to the Bank,
an amount equal to


                                      -5-
<PAGE>


105% of the maximum aggregate amount then or at any time thereafter available to
be drawn under all outstanding  Credits, and the Applicant hereby pledges to the
Bank and grants to the Bank a security  interest  in all such funds as  security
for such obligations, acknowledges that the Bank shall at all times have control
of such funds and shall be authorized to give entitlement  orders (as defined in
the UCC) with respect to such funds, without further consent of the Applicant or
any other person, and agrees promptly to do all further things that the Bank may
deem  necessary  in order to grant and perfect the Bank's  security  interest in
such funds.  The Applicant  waives  presentment,  protest,  dishonor,  notice of
dishonor,  demand,  notice of  protest,  notice of  non-payment,  and  notice of
acceptance  of this  Agreement,  and any other notice or demand of any kind from
the Bank.


         8.  Subrogation.  The Bank,  at its option,  shall be subrogated to the
Applicant's  rights against any person who may be liable to the Applicant on any
transaction or obligation  underlying any Credit, to the rights of any holder in
due course or person  with  similar  status  against the  Applicant,  and to the
rights of any beneficiary or any successor or assignee of any beneficiary.


         9. Indemnification. The Applicant shall indemnify and hold the Bank and
its affiliates and agents,  and each of their  respective  officers,  directors,
shareholders  and employees  (each,  an "Indemnified  Party")  harmless from and
against any and all claims,  liabilities,  losses,  damages,  Taxes,  penalties,
interest,  judgments,  costs and expenses  (including  reasonable legal fees and
costs,  whether of  internal  or  external  counsel  to the Bank),  which may be
incurred by or awarded against any Indemnified  Party, and which arise out of or
in connection  with (a) any Credit,  this  Agreement,  or the  preparation for a
defense of any  investigation,  litigation,  or proceeding  arising out of or in
connection  herewith or therewith (and irrespective of who may be the prevailing
party);  (b) any  payment  or  action  taken  in  connection  with  any  Credit,
including,  without limitation, any action or proceeding seeking to restrain any
drawing  under a Credit or to compel or restrain any payment or any other action
under a Credit or this Agreement (and  irrespective of who may be the prevailing
party);  (c) the  enforcement of this Agreement or the collection or sale of any
property  or  collateral;  and  (d)  any  act or  omission  of any  Governmental
Authority or other cause beyond the Bank's reasonable  control;  except, in each
case, to the extent such claim, liability, loss, damage, Tax, penalty, interest,
judgment,  cost or expense is found by a final  judgment of a court of competent
jurisdiction  to have  resulted  from the  Bank's  gross  negligence  or willful
misconduct.


         10. Miscellaneous.  All notices, demands, requests, consents, approvals
and other  communications  required or permitted  hereunder shall be in writing,
will be effective  upon  receipt,  and shall be delivered  by  registered  mail,
return  receipt  requested,  by  facsimile  transmission  with  confirmation  of
delivery, or by nationally recognized overnight courier service, to the intended
recipient at its address set forth in this  Agreement,  or at such other address
of which such party shall have given notice to the other in accordance herewith.
No delay  or  omission  of the  Bank to  exercise  any  right  or power  arising
hereunder shall impair any


                                      -6-
<PAGE>


such right or power or be  considered to be a waiver of any such right or power.
No  modification,  amendment or waiver of any  provision of this  Agreement,  or
consent to any departure  therefrom,  will be effective unless made in a writing
signed by the Bank,  and then such waiver or consent shall be effective  only in
the specific  instance and for the purpose for which given.  If any provision of
this  Agreement is found to be invalid by a court,  all the other  provisions of
the  Agreement  will  remain in full  force and  effect.  If this  Agreement  is
executed by more than one Applicant,  each Applicant waives any and all defenses
to payment  and  performance  hereunder  based upon  principles  of  suretyship,
impairment of collateral,  or otherwise and,  without limiting the generality of
the foregoing,  each Applicant  consents to: any change in the time,  manner, or
place of payment of or in any other term of all or any of the obligations of any
other  Applicant  hereunder  or  otherwise,  and any  exchange or release of any
property or collateral, or the release or other amendment,  extension,  renewal,
waiver of, or consent to departure  from, the terms hereof or of any guaranty or
security agreement or any other agreement related hereto. This Agreement will be
binding  upon and inure to the benefit of the  Applicant  and the Bank and their
respective heirs, executors,  administrators,  successors and assigns; provided,
however,  that the Applicant  may not assign this  Agreement in whole or in part
without  the Bank's  prior  written  consent and the Bank may at any time assign
this  Agreement in whole or in part. The Applicant  hereby  authorizes the Bank,
from time to time without  notice to the  Applicant,  to record  telephonic  and
other  electronic  communications  of the Applicant and provide any  information
pertaining to the financial  condition,  business operations or creditworthiness
of the Applicant to or at the direction of any Governmental Authority, to any of
the Bank's correspondents, and the Bank's affiliates, and to any of its or their
directors,  officers,  employees,  auditors and  professional  advisors,  to any
person which in the  ordinary  course of its  business  makes  credit  reference
inquiries,  to any person which may succeed to or  participate in all or part of
the Bank's  interest  hereunder,  and as may be necessary  or advisable  for the
preservation of the Bank's rights hereunder.  This is a continuing Agreement and
shall remain in full force and effect until no  obligations of the Applicant and
no Credit exist hereunder; provided, however, that termination of this Agreement
shall  not  release  the  Applicant  from any  payment  or  performance  that is
subsequently  rescinded or recouped, and the obligation to make any such payment
or  performance  shall continue until paid or performed as if no such payment or
performance  ever  occurred.  Provisions  concerning  payment,  indemnification,
increased costs, Taxes, immunity, and jurisdiction shall survive the termination
of this Agreement.


         11. Financial Institution  Applicant.  If one of two or more Applicants
is  a  financial  institution  (the  "Financial  Institution"),   the  Financial
Institution  shall be deemed to  request  the  issuance  of any  Credit  for its
customer (the  "Customer") who has also executed this Agreement as an Applicant.
In consideration of any such issuance,  and as a direct and primary  obligation,
the Financial Institution agrees to pay the Bank all amounts that become due and
payable to the Bank under this  Agreement,  when and as due, in accordance  with
the terms  hereof.  The  Financial  Institution  hereby  assigns to the Bank all
security interests now or at any time existing granted in favor of the Financial
Institution  as  security  for  the  Customer's  obligations  to  the  Financial
Institution  arising out of this  Agreement or any Credit,  and agrees to do all
things necessary from time to time to effect such assignment.


                                      -7-
<PAGE>


         12. Representative of Applicant.  If this Agreement is executed by more
than one Applicant and neither is a Financial  Institution,  the Applicant whose
signature is first shown below shall have the  exclusive  right to deal with the
Bank  in  connection  with  the  matters   addressed   herein,   notwithstanding
conflicting instructions or requests from any other Applicant.


         13. Waiver of Immunity.  The Applicant acknowledges that this Agreement
is entered into, and each Credit will be issued, for commercial purposes and, if
the  Applicant now or hereafter  acquires any immunity  (sovereign or otherwise)
from the  jurisdiction  of any court or from any legal  process  with respect to
itself or any of its property,  the  Applicant  hereby  irrevocably  waives such
immunity.


         14.  Jurisdiction.  The Applicant  hereby  irrevocably  consents to the
non-exclusive  jurisdiction  of any  state  or  federal  court  in the  judicial
district  or the state in which the Bank's  office set forth  above is  located,
provided  that nothing  contained in this  Agreement  will prevent the Bank from
bringing any action,  enforcing any award or judgment,  or exercising  any right
against  the  Applicant  individually,  against  any  security,  or against  any
property of the Applicant  within any other  jurisdiction.  The Applicant agrees
that the venue provided above is the most convenient  forum for the Bank and the
Applicant.  The Applicant  waives any objection to venue and any objection based
on a more convenient forum in any action under this Agreement.


         15. WAIVER OF JURY TRIAL. THE APPLICANT  IRREVOCABLY  WAIVES ALL RIGHTS
APPLICANT MAY HAVE TO A TRIAL BY JURY IN ANY ACTION,  PROCEEDING OR CLAIM OF ANY
NATURE  RELATING  TO THIS  AGREEMENT,  ANY  CREDIT,  ANY  DOCUMENTS  EXECUTED IN
CONNECTION  WITH THIS AGREEMENT OR ANY CREDIT,  OR ANY OBLIGATION OR TRANSACTION
UNDERLYING ANY OF THE FOREGOING.  THE APPLICANT ACKNOWLEDGES THAT THIS WAIVER IS
KNOWING AND VOLUNTARY.


         16. Governing Law. This Agreement and each Credit shall be interpreted,
construed,  and  enforced  according  to (a)  the  laws of the  Commonwealth  of
Pennsylvania,  including, without limitation, the UCC; and (b) the UCP, which is
incorporated  herein by  reference  and which  shall  control (to the extent not
prohibited  by the law  referred  to in (a)) in the  event  of any  inconsistent
provisions  of such  law.  In the event  that a body of law other  than that set
forth above is applicable to a Credit,  the Applicant  shall be obligated to pay
and  reimburse  the Bank for any payment  made under such Credit if such payment
is, in the  Bank's  judgment,  justified  under  either the law  governing  this
Agreement or the law governing such Credit.


                     [SIGNATURES ARE ON THE FOLLOWING PAGE]


                                      -8-
<PAGE>



                                               STV GROUP, INCORPORATED
                                               (First Applicant's Name)

                                                By:  /s/ Peter W. Knipe   (SEAL)
                                                Print Name:  Peter W. Knipe
                                                Title:  CFO


                                                STV INCORPORATED

                                                By:  /s/ Peter W. Knipe   (SEAL)
                                                Print Name:  Peter W. Knipe
                                                Title:  CFO


                                                STV CONSTRUCTION SERVICES, INC.

                                                By:  /s/ Peter W. Knipe   (SEAL)
                                                Print Name:  Peter W. Knipe
                                                Title:  CFO


                                                STV INTERNATIONAL, INC.

                                                By:  /s/ Peter W. Knipe   (SEAL)
                                                Print Name:  Peter W. Knipe
                                                Title:  CFO


                                                STV/ENVIRONMENTAL, INC.

                                                By:  /s/ Peter W. Knipe   (SEAL)
                                                Print Name:  Peter W. Knipe
                                                Title:  CFO


                                                STV SURVEYING, INC.

                                                By:  /s/ Peter W. Knipe   (SEAL)
                                                Print Name:  Peter W. Knipe
                                                Title:  CFO

                [SIGNATURES ARE CONTINUED ON THE FOLLOWING PAGE]


                                      -9-
<PAGE>


                                                STV CONSTRUCTION, INC.

                                                By:  /s/ Peter W. Knipe   (SEAL)
                                                Print Name:  Peter W. Knipe
                                                Title:  CFO


                                                STV ARCHITECTS, INC.

                                                By:  /s/ Peter W. Knipe   (SEAL)
                                                Print Name:  Peter W. Knipe
                                                Title:  Secretary


                                                STV SILVER & ZISKIND ARCHITECTS,
                                                P.C.

                                                By:  /s/ Peter W. Knipe   (SEAL)
                                                Print Name:  Peter W. Knipe
                                                Title:  Secretary


                                                STV ARCHITECTS,   P.C.

                                                By:  /s/ Michael D. Garz  (SEAL)
                                                Print Name:  Michael D. Garz
                                                Title:  President



M:\LEGAL\Simon\STV Group\Reimbursement3   Rev. 3/99


                                      -10-

<TABLE> <S> <C>

<ARTICLE>                                           5
<LEGEND>
     TRANSMITTING STV GROUP'S FISCAL 2000 FIRST QUARTER FORM 10Q.
</LEGEND>
<CIK>                                               0000095045
<NAME>                                              STV GROUP, INCORPORATED

<S>                                                   <C>
<PERIOD-TYPE>                                                  3-MOS
<FISCAL-YEAR-END>                                        SEP-30-2000
<PERIOD-END>                                             DEC-31-1999
<CASH>                                                     2,385,000
<SECURITIES>                                                  34,000
<RECEIVABLES>                                             34,614,000
<ALLOWANCES>                                                  90,000
<INVENTORY>                                               16,024,000
<CURRENT-ASSETS>                                          53,442,000
<PP&E>                                                     7,163,000
<DEPRECIATION>                                             5,032,000
<TOTAL-ASSETS>                                            58,862,000
<CURRENT-LIABILITIES>                                     34,637,000
<BONDS>                                                            0
                                              0
                                                        0
<COMMON>                                                   2,043,000
<OTHER-SE>                                                18,047,000
<TOTAL-LIABILITY-AND-EQUITY>                              20,090,000
<SALES>                                                   34,246,000
<TOTAL-REVENUES>                                          34,246,000
<CGS>                                                     22,902,000
<TOTAL-COSTS>                                             25,032,000
<OTHER-EXPENSES>                                                   0
<LOSS-PROVISION>                                                   0
<INTEREST-EXPENSE>                                            38,000
<INCOME-PRETAX>                                            2,423,000
<INCOME-TAX>                                               1,118,000
<INCOME-CONTINUING>                                        1,305,000
<DISCONTINUED>                                                     0
<EXTRAORDINARY>                                                    0
<CHANGES>                                                          0
<NET-INCOME>                                               1,305,000
<EPS-BASIC>                                                     0.34
<EPS-DILUTED>                                                   0.31



</TABLE>


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