EXHIBIT 4.11

This Note has not been registered  under the Securities Act of 1933, as amended.
No transfer of this Note shall be valid or effective  except in accordance  with
the applicable requirements of the Securities Act of 1933, as amended.

                                CONVERTIBLE NOTE
As of ____________, 1998                                      New York, New York

$____________________   

FOR VALUE RECEIVED,  ENVIRONMENTAL  REMEDIATION HOLDING CORPORATION,  a Colorado
corporation   (the   "Company"),   hereby  promises  to  pay  to  the  order  of
______________________,  or any subsequent holder of this Note (the "Payee"), at
____________________________, or at such other place as may be designated by the
Payee  from  time  to  time by  notice  to the  Company,  the  principal  sum of
________________Thousand  ($_____) Dollars, together with interest from the date
hereof on the unpaid  principal  amount  hereof at an annual rate equal to eight
percent  (8.0%)  per  annum.  Such  principal  and  interest  shall  be  paid in
accordance  with the terms of Section 1 below,  in cash or by wire  transfer  to
such account as the Payee shall direct,  in immediately  available  funds and in
lawful currency of the United States of America.

1.   PAYMENTS.

(a) Unless previously fully converted into Common Stock of the Company as herein
provided, the unpaid principal amount of this Note shall be payable to the Payee
in cash on _____________,  2000 (the "Maturity Date");  provided,  however, that
the Company may, at its sole option, by written notice given to the Payee at any
time prior to the Maturity  Date,  make payment of the entire  unpaid  principal
amount of this Note on the Prepayment  Date (as defined herein) by delivering to
the Payee  such  number of shares  of Common  Stock of the  Company  as shall be
determined by dividing (i) the entire  principal  amount of this Note  remaining
unpaid on the Prepayment  Date and interest , by (ii) the  Conversion  Price (as
herein defined) in effect on the Prepayment Date.

(b) Interest on the unpaid  principal  balance of this Note at the rate of eight
percent  (8.0%) per annum shall accrue from the date hereof and shall be payable
quarterly on the last day of each January,  April, July and October,  commencing
on October 31, 1998 (each an "Interest  Payment Date"),  until the entire unpaid
principal  amount  hereof shall have been paid.  The Company may pay interest on
this Note, when due on any Interest Payment Date,  either in cash or by delivery
to the  Payee  or one or more  additional  notes,  each of  which  shall  be (i)
functionally  equivalent to the terms and  conditions of this Note,  and (ii) in
principal  amount equal to all accrued and unpaid  interest due on such Interest
Payment Date (the "Additional  Note").  All reference herein to the "Note" shall
mean and include each Additional  Note delivered by the Company  pursuant to the
provisions  hereof. In addition,  and in lieu or paying interest on this Note in
cash or by the  issuance of  Additional  Notes,  at the  Company's  option,  the
Company may allow all of any portion of the interest on this Note to accrue and,
upon  conversion  of this Note,  all such accrued and unpaid  interest  shall be
payable in additional  shares of Common Stock at the Conversion  Price in effect
on the Interest Payment Date.

(c) In the event that any payment of principal and/or interest hereunder becomes
due and payable on a Saturday,  Sunday or other day on which commercial banks in
the State of New York are  authorized  or  required  by law to  close,  then the
maturity  thereof  shall be extended to the next  succeeding  business  day; and
during any such  extension,  interest on principal  amounts payable shall accrue
and be payable at the applicable rate.

2.   REFERENCE TO SECURITIES PURCHASE AGREEMENT.

This Note is one of the Notes of the Company  originally issued pursuant to that
certain Securities  Purchase Agreement,  dated as of ____________,  1998, by and
among  the  Company,  the  above-named  Payee and  certain  other  parties  (the
"Securities Purchase Agreement").  The holder hereof is entitled to the benefits
of the Securities  Purchase  Agreement and all Exhibits  thereto,  including all
"Transaction  Documents" referred to therein, and may enforce the obligations of
the Company  contained in the  Securities  Purchase  Agreement  and exercise the
remedies  provided  for  therein or  otherwise  available  in  respect  thereof.
Capitalized terms, unless otherwise defined herein, have the respective meanings
ascribed to them in the Securities Purchase Agreement.

3.   RANKING OF NOTE.

Subject  at all time to the  subordination  provisions  set forth in  Section 11
hereof,  this  Note,  together  with the  other  Notes  issued  pursuant  to the
Securities Purchase Agreement, shall constitute senior securities of the Company
and, except as provided below, shall rank

pari passu with all other  indebtedness  for money  borrowed  by the Company and
senior to any other indebtedness for money borrowed of the Company which, by its
terms shall be made expressly subject and subordinated to this Note.

4.     PREPAYMENT OF NOTE.

(a) Subject at all times to the holder's  right to convert all or any portion of
this Note  into  Common  Stock  pursuant  to  Section 5 hereof at any time on or
before the 'Prepayment Date' (as herein defined), as long as no Event of Default
shall have occurred,  the principal  amount of this Note may be prepaid,  at the
option of the Company, upon not less than ten (10) days' prior written notice to
the holder of this Note (the "Prepayment  Notice"),  in whole or in part without
premium  or  penalty at any time or from time to time from and after the date of
the initial issuance of the Note (the "Issuance Date").

(b) Each Prepayment  Notice shall specify the principal  amount of this Note and
all other outstanding  Notes to be redeemed and the applicable  Prepayment Date.
Each prepayment of principal of this Note shall be accompanied by the payment of
all interest accrued and unpaid to the prepayment date on the amount so prepaid.
Each such  prepayment  shall be made by wire transfer of  immediately  available
funds or by bank  cashier's  check  payable  to the Payee and shall be on a date
(the  "Prepayment  Date") which shall be not earlier than five (5) business days
following  delivery of the Note by the holder.  Any partial  prepayment  of this
Note,  whether  optional  or  mandatory,  shall be applied  first to accrued and
unpaid interest  hereon,  and then to the outstanding  principal  amount of this
Note in the inverse  order of maturity.  In the event the Company  fails to wire
transfer funds within the time provided herein, the Company shall be required to
pay the holder a sum equal to two (2%)  percent per month until such  prepayment
is made.

(c) Notwithstanding anything to the contrary set forth in this Section 4, in the
event and to the extent that the Company  shall  provide the holder of this Note
with a Prepayment Notice, it shall simultaneously  provide to the holder of this
Note  evidence of the  availability  of funds to effect such  prepayment;  which
evidence  of  availability  of funds  shall  include,  without  limitation,  (i)
confirmation of cash or cash equivalent bank balances,  (ii) an irrevocable bank
letter  of  credit,  or (iii) a written  commitment  from a  recognized  lending
institution to effect the financing of such prepayment.

5.   CONVERSION.

Subject at all times to the  Company's  right to prepay the Notes as provided in
Section 4 hereof,  the holders of the Notes shall have the following  conversion
rights (the "Conversion Rights"):

(a) Voluntary Conversion. At any time or from time to time commencing (i) on the
30th day  following  the  Issuance  Date,  the  holder of this Note may elect to
convert up to thirty  three and  one-third  (33-1/3  %) percent of the  original
principal  amount of this Note,  (ii) an  additional  thirty three and one-third
(33-1/3%) percent of the original principal amount of this Note may be converted
every  thirty  (30)  days  thereafter  and (iii) on the 90th day  following  the
Issuance  Date,  the holder of this Note may elect to convert one hundred (100%)
percent of the  original  principal  amount of this Note,  into shares of Common
Stock of the Company,  by written notice given to the Company in accordance with
the provisions of Section 5(h) hereof (the "Conversion Notice"). In no event may
the  holder of this Note  effect a  conversion  of less than  $10,000  principal
amount of this Note. Subject to the foregoing, the holder of this Note may elect
to convert (a "Voluntary Conversion") all or any portion of the principal amount
of this Note held by such person  into a number of fully paid and  nonassessable
shares of Common Stock equal to the quotient  which results when the  Conversion
Price (as defined  below) in effect as of the date of the  Conversion  Notice is
divided into the aggregate  principal  amount of all or any portion of this Note
outstanding  plus all accrued but unpaid  interest  thereof to be so  converted.
Such right of  Voluntary  Conversion  shall be effected by the  surrender of the
Note to be converted to the Company within one (1) business days of transmission
of the Conversion  Notice at the office of the Company,  accompanied  (i) by the
original  Conversion Notice,  (ii) if so required by the Company, by instruments
of  transfer,  in  form  satisfactory  to  the  Company,  duly  executed  by the
registered  holder or by his duly  authorized  attorney  and (iii)  transfer tax
stamps or funds therefore, if required pursuant to Section 5(g) herein.

(b) Automatic  Conversion.  Prior to _____, 2000, the Company shall not have the
right to compel any holder of Note to convert such Note into Common Stock or any
other securities of the Company.  Effective as of _________, 2000, to the extent
not previously  converted by the holders, all remaining principal amount of this
Note, together with all accrued interest hereon, shall automatically and without
further  action on the part of such holders,  be converted  into Common Stock of
the Company at the Conversion Price then in effect.

(c)  Conversion  Price.  Subject to adjustment  from time to time as provided in
Section 5(d) below, the term "Conversion Price" shall mean the lowest of:

         (i) 120% of the average of the Closing Bid Price (as defined below) for
the five (5) consecutive  trading days  immediately  preceding the Issuance Date
(the "Issuance Date Conversion Price"); or

         (ii) the  product of  multiplying  (A) the  average of the  Closing Bid
Price for the five consecutive trading days preceding the applicable date of the
Conversion  Notice on which all or part of this Note shall be converted,  by (B)
seventy-five percent (75%).

As used  herein,  the term  'Closing Bid Price' shall mean the closing bid price
per  share  of the  Company's  Common  Stock  as  reported  by  Bloomberg,  L.P.
("Bloomberg"),  on any one of the following exchanges which shall be the primary
exchange on which such Common Stock shall then be quoted;  namely, (a) the AMEX,
(b) the NASDAQ  National  Market  System  ("NASDAQ NMS "), (c) the NASDAQ System
(other  than the  NASDAQ  NMS),  (d) the New  York  Stock  Exchange,  or (e) the
National Quotation Bureau,  Inc. for quotes on the Electronic  Bulletin Board or
the "Pink Sheets",  as the case may be, for the applicable number of consecutive
trading days immediately preceding the Issuance Date, the date of the Conversion
Notice, or other applicable date specified in Section 5(d), as the case may be.

(d)      Adjustments of Conversion Price.  The Conversion Price in effect
from time to time shall be, subject to adjustment in accordance with
the provisions of this Section 5(d).

         (i) Adjustments for Stock Splits and Combinations. If the Company shall
at any time or from time to time after the Issuance  Date,  effect a stock split
of the  outstanding  Common Stock,  the  applicable  Conversion  Price in effect
immediately prior to the stock split shall be  proportionately  decreased (or in
increased in the case of a reverse stock split).  If the Company  shall,  at any
time or from time to time  after the  Issuance  Date,  combine  the  outstanding
shares of Common Stock, the applicable  Conversion  Price in effect  immediately
prior to the combination  shall be  proportionately  increased.  Any adjustments
under this  Section  5(d)(i)  shall be effective at the close of business on the
date the stock split or combination occurs.

         (ii)  Adjustments  for  Certain  Dividends  and  Distributions.  If the
Company shall at any time or from time after the Issuance Date, make or issue or
set a record date for the  determination  of holders of Common Stock entitled to
receive a dividend  or other  distribution  payable  in shares of Common  Stock,
then, and in each event, the applicable  Conversion Price in effect  immediately
prior to such event shall be  decreased  as of the time of such  issuance or, in
the event such a record date shall have been fixed,  as of the close of business
on such record date, by multiplying,  as applicable,  the applicable  Conversion
Price then in effect by a fraction;

                  (A) the numerator of which shall be the total number of shares
of Common Stock  issued and  outstanding  immediately  prior to the time of such
issuance or the close of business on such record date; and

                  (B) the  denominator  of which  shall be the  total  number of
shares of Common Stock issued and outstanding  immediately  prior to the time of
such  issuance  or the close of  business on such record date plus the number of
shares of Common Stock issuable in payment of such dividend or distribution.

         (iii) Adjustment for Other Dividends and Distributions.  If the Company
shall at any time or from time to time after the Issuance Date, make or issue or
set a record date for the  determination  of holders of Common Stock entitled to
receive a dividend or other distribution  payable in other than shares of Common
Stock, then, and in each event, an appropriate  revision to the Conversion Price
shall be made and  provision  shall be made (by  adjustments  of the  Conversion
Price  or  otherwise)  so that  the  holder  of this  Note  shall  receive  upon
conversions  thereof,  in  addition  to the  number of  shares  of Common  Stock
receivable  thereon,  the number of  securities  of the Company which they would
have received had this Note been converted into Common Stock on the date of such
event and had  thereafter,  during the period from the date of such event to and
including the  Conversion  Date,  retained such  securities  (together  with any
distributions  payable  thereon during such period),  giving  application to all
adjustments  called for during such period  under this  Section  5(d)(iii)  with
respect to the rights of the holders of the Note.

         (iv) Adjustments for Reclassification, Exchange or Substitution. If the
Common Stock  issuable upon  conversion of this Note at any time or from time to
time after the Issuance Date shall be changed into the same or different  number
of  shares of any  class or  classes  of  stock,  whether  by  reclassification,
exchange,  substitution  or  otherwise  (other  than by way of a stock  split or
combination of shares or stock dividends provided for in Sections 5(d)(i),  (ii)
and  (iii),  or a  reorganization,  merger,  consolidation,  or sale  of  assets
provided for

in Section  5(d)(v)),  then, and in each event,  an appropriate  revision to the
Conversion  Price shall by made and provisions  shall be made (by adjustments of
the  Conversion  Price of  otherwise) so that the holder of this Note shall have
the right  thereafter to convert such Note into the kind and amount of shares of
stock  and  other  securities   receivable  upon   reclassification,   exchange,
substitution or other change, by holders of the number of shares of Common Stock
into  which  such Note  might  have  been  converted  immediately  prior to such
reclassification, exchange, substitution or other change, all subject to further
adjustment as provided herein.

         (v) Adjustments for Reorganization,  Merger,  Consolidation or Sales of
Assets.  If at any time or from time to time after the Issuance Date there shall
be a capital  reorganization  of the Company (other than by way of a stock split
or combination  of shares or stock  dividends or  distributions  provided for in
Section 5(d)(i), (ii) and (iii), or a reclassification, exchange or substitution
of shares provided for in Section 5(d)(iv)), or a merger or consolidation of the
Company with or into another  corporation,  or the sale of all or  substantially
all of the Company's properties or assets to any other person, then as a part of
such reorganization,  merger, consolidation, or sale, an appropriate revision to
the Conversion  Price shall be made and provision  shall be made (by adjustments
of the Conversion Price or otherwise) so that the holder of this Note shall have
the right  thereafter to convert this Note into the kind and amount of shares of
stock  and  other  securities  or  property  of the  Company  or  any  successor
corporation resulting from such reorganization,  merger, consolidation, or sale,
to which a holder of Common Stock  deliverable  upon  conversion  of such shares
would have been entitled upon such  reorganization,  merger,  consolidation,  or
sale,  to which a holder of Common Stock  deliverable  upon  conversion  of such
shares would have been entitled upon such reorganization, merger, consolidation,
or  sale.  In any  such  case,  appropriate  adjustment  shall  be  made  in the
application of the provisions of this Section 5(d)(v) with respect to the rights
of the holders of this Note after the reorganization,  merger, consolidation, or
sale to the end that the  provisions  of this  Section  5(d)(v)  (including  any
adjustment in the applicable  Conversion  Ratio then in effect and the number of
shares of stock or other  securities  deliverable  upon conversion of this Note)
shall be applied  after that event in as nearly an  equivalent  manner as may be
practicable.

         (vi)   Adjustments   after   Registration   Statement   is   Effective.
Notwithstanding  any  other  provision  contained  in  this  Section  5(d),  the
Conversion Price shall be adjusted following the effective date of the Company's
registration  statement on Form S-1 or any other  appropriate  registration form
(the "Registration Statement") filed with the Securities and Exchange Commission
("SEC") (the "Effective Date") as follows:

                  (A) for  conversions  beginning  90 days  after the  Effective
Date, the Conversion  Price shall be equal to the lower of (1) the Issuance Date
Conversion  Price;  or (2) 77.5% of the average of the Closing Bid Price for the
five (5) days trading immediately preceding the date of the Conversation Notice;
and

                  (B) for  conversions  beginning  120 days after the  Effective
Date, the Conversion  Price shall be equal to the lower of (1) the Issuance Date
Conversion  Price;  or (2) 75.0% of the average of the Closing Bid Price for the
five (5) days trading immediately preceding the date of the Conversion Notice.

(e) No  Impediment.  The Company shall not, by amendment of its  Certificate  of
Incorporation or through any reorganization,  transfer of assets, consolidation,
merger, dissolution,  issue or sale of securities or any other voluntary action,
avoid or seek to avoid the  observance or  performance of any of the terms to be
observed or performed  hereunder  by the Company,  but will at all times in good
faith, assist in the carrying out of all the provisions of this Section 5 and in
the taking of all such action as may be  necessary  or  Appropriate  in order to
protect the Conversion Rights of the holder of the Note against impairment.

(f)  Certificate  as to  Adjustments.  Upon  occurrence  of each  adjustment  or
readjustment  of the  Conversion  Price or number  of  shares  of  Common  Stock
issuable upon conversion of the Note pursuant to this Section 5, the Company, at
its  expense,   shall  promptly  compute  such  adjustment  or  readjustment  in
accordance with the terms hereof and furnish notice to each holder of such Note,
a certificate setting forth such adjustment and readjustment,  showing in detail
the facts upon which such adjustment or readjustment is based. The Company shall
furnish or cause to be furnished to such holder a like certificate setting forth
such adjustments and readjustments, the applicable Conversion Price in effect at
the time and the number of shares of Common  Stock and the  amount,  if any,  of
other  securities  or  property  which at the time  would be  received  upon the
conversion of such Note. Notwithstanding the foregoing, the Company shall not be
obligated to deliver a  certificate  unless such  certificate  would  reflect an
increase or decrease of at least one percent of such adjusted amount.

(g) Issue  Taxes.  The  Company  shall  pay any and all  issue and other  taxes,
excluding  federal,  state or local income taxes, that may be payable in respect
of any issue or delivery of shares of Common  Stock on  conversion  of this Note
pursuant hereto;  provided,  however, that the Company shall not be obligated to
pay any transfer taxes  resulting  from any transfer  requested by any holder in
connection with any such conversion.

(h)  Notices  and  Delivery  of Shares.  All  notices  and other  communications
hereunder shall be in writing and shall be deemed given and effective (i) on the
same date,  if delivered  personally or by facsimile by not later than 7:00 p.m.
New York time (with a courtesy copy of such facsimile simultaneously sent by fax
to Counsel for the  Company),  or (ii) three (3) business days  following  being
mailed  by  certified  or  registered  mail,  postage  prepaid,   return-receipt
requested,  addressed  to the holder of record at its address  appearing  on the
books  of  the  Company.  The  Company  shall,  immediately  upon  receipt  of a
Conversion  Notice,  issue  and  deliver  to or upon the  order of such  holder,
against  delivery  of the Notes  which have been  converted,  a  certificate  or
certificates for the number of shares of Common Stock to which such holder shall
be entitled and such certificate or certificates  shall not bear any restrictive
legend; provided, (i) the Common Stock evidenced thereby are sold pursuant to an
effective  registration  statement  under the  Securities  Act,  (ii) the holder
provides the Company  with an opinion of counsel  reasonably  acceptable  to the
Company  to the effect  that a public  sale of such  shares may be made  without
registration under the Securities Act, or (iii) such holder provides the Company
with  reasonable  assurance that such shares can be sold free of any limitations
imposed by Rule 144,  promulgated  under the  Securities  Act. The Company shall
cause such  issuance and delivery to be effected  within three (3) business days
and shall transmit the certificates by messenger or overnight  delivery service,
or via the DWAC system,  to reach the address  designated  by such holder within
three (3) business days after the receipt of such notice.

(i) Fractional Shares. No fractional shares of Common Stock shall be issued upon
conversion  of the Note.  In lieu of any  fractional  shares to which the holder
would otherwise be entitled,  the Company shall pay cash equal to the product of
such  fraction  multiplied  by the  average  trade  price  of one  share  of the
Company's Common Stock on the applicable Conversion Date.

(j) Reservation of Common Stock. The Company shall at all times reserve and keep
available,  out of its authorized but unused shares of Common Stock,  solely for
the purpose of  effecting  the  conversion  of the Notes,  200% of the number of
shares   deliverable  upon  conversion  of  all  the  Note  from  time  to  time
outstanding.  The  Company  shall,  from  time to time in  accordance  with  the
Colorado General Corporations Law, as amended, increase the authorized number of
shares of Common  Stock if at any time the unused  number of  authorized  shares
shall not be sufficient to permit the  conversion of all of the Note at the time
outstanding.  In such  connection,  the Company shall hold a special  meeting of
stockholders  for the purpose of authorizing  additional  shares of Common Stock
not  later  than  120  days  after  any date in which  the  Company  shall  have
insufficient shares of Common Stock so reserved.

(k)  Retirement  of Note.  Conversion  of this Note shall be deemed to have been
effected on the  applicable  Conversion  Date.  The  converting  holder shall be
deemed  to have  become a  stockholder  of  record  of the  Common  Stock on the
applicable  Conversion Date. Upon conversion of only a portion of this Note, the
Company  shall issue and  deliver to such holder at the expense of the  Company,
against receipt of the original note delivered for partial  cancellation,  a new
Note representing the unconverted portion of this Note so surrendered.

(l) Regulatory Compliance.  If any shares of Common Stock to be reserved for the
purpose of  conversion  of this Note  require  registration  or listing  with or
approval of any government  authority,  stock exchange or other  regulatory body
under any federal or state law or regulation or otherwise before such shares may
be validly issued or delivered upon  conversion,  the Company shall, at its sole
cost and expense,  in good faith and as expeditiously  as possible,  endeavor to
secure such registration, listing or approval, as the case may be.

(m) Limitations on Amount of Conversion.  Notwithstanding  anything contained in
this Note to the  contrary,  in no event shall any holder of Note be entitled or
required to convert  this Note in excess of that number of shares of Note which,
upon  giving  effect to such  conversion,  would cause the  aggregate  number of
shares of Common Stock  beneficially  owned by the holder and its  affiliates to
exceed 4.9% of the outstanding  shares of the Company's Common Stock immediately
following such conversion.  For purposes of the foregoing proviso, the aggregate
number of  shares  of Common  Stock  beneficially  owned by the  holder  and its
affiliates  shall  include the number of shares of Common  Stock  issuable  upon
conversion of this Note with respect to which the  determination of such proviso
is being  made,  but shall  exclude  the number of shares of Common  Stock which
would be  issuable  upon  (i)  conversion  of the  remaining,  unconverted  Note
beneficially owned by

such  holder  and  its  affiliates,  and  (ii)  exercise  or  conversion  of the
unexercised or unconverted  portion of any other securities of the Company which
are beneficially owned by the holder and its affiliates and which are subject to
a limitation  on conversion or exercise  analogous to the  limitation  contained
herein.  Except as set forth in the  preceding  sentence,  for  purposes of this
paragraph,  beneficial  ownership shall be calculated in accordance with Section
13(d) of the Securities Exchange Act of 1934, as amended. Any holder of Note may
waive the foregoing limitations set forth in this paragraph by written notice to
the Company  upon not less than 30 days prior  notice  (with such waiver  taking
effect only upon the expiration of such 30-day notice period).

(n) In the event the  Company  does not make  delivery  of the  certificates  of
Common Stock, as instructed by a holder, within five (5) business days after the
Date of  Conversion,  then in such event the Company  shall pay to the holder an
amount,  in  immediately  available  funds  in  accordance  with  the  following
schedule,  wherein "No. Business Days Late" is defined as the number of business
days beyond the five (5) business days delivery period.

                                                        Late Payment for Each
Principal Amount Being                                     $10,000 of Notes
No. Business Days Late                                    Converted (U.S. $)
         1                                                    $100
         2                                                    $200
         3                                                    $300
         4                                                    $400
         5                                                    $500
         6                                                    $600
         7                                                    $700
         8                                                    $800
         9                                                    $900
         10                                                   $1,000
         11                                                   $1,000 +  $200 for
                                                          each Business Day Late
                                                          Beyond 10 days

To the extent  that the  failure of the  Company  to issue the  certificates  of
Common  Stock  pursuant to this  Section  5(n) is due to the  unavailability  of
authorized but unissued  shares of Common Stock,  the provisions of this Section
5(n) shall not apply but instead the provisions of Section 5(o) shall apply. The
Company shall pay any payments  incurred  under this Section 5(n) in immediately
available  funds within five (5) business  days from the date of issuance of the
certificates of applicable  Common Stock.  Nothing herein shall limit a holder's
right to pursue actual  damages for the  Company's  failure to issue and deliver
Common  Stock to the holder  within  three (3)  business  days after the Date of
Conversion.

         (o) If, at any time, a holder  submits a Notice of  Conversion  and the
Company does not have sufficient  authorized but unissued shares of Common Stock
available to effect, in full, a conversion of the Notes (a "Conversion Default,"
the date of such default  being  referred to herein as the  "Conversion  Default
Date"), the Company shall issue to the holder a certificate  representing all of
the shares of Common Stock which are available,  and the Notice of Conversion as
to any Notes  requested  to be converted  but not  converted  (the  "Unconverted
Notes") shall become null and void.  The Company  shall  provide  notice of such
Conversion  Default  ("Notice of Conversion  Default" to all existing holders of
outstanding  Notes,  by  facsimile,  within one (1) business day of such default
(with the original  delivered by  overnight or two day  courier).  No holder may
submit a Notice of  Conversion  after  receipt of Notice of  Conversion  Default
until the date additional  shares of Common Stock are authorized by the Company.
The Company  agrees to pay to all holders of  outstanding  Notes  payments for a
Conversion  Default  ("Conversion  Default  Payments") in the amount of (N/365 x
(.24) x the initial issuance price of the outstanding  Notes held by each holder
where N = the number of days from the  Conversion  Default Date to the date (the
"Authorization  Date") that the Company authorizes a sufficient number of shares
of Common Stock to affect  conversion of all remaining  Notes. The Company shall
send notice  ("Authorization  Notice") to each holder of outstanding  Notes that
additional shares of Common Stock have been authorized,  the Authorization  Date
and the amount of holder's  accrued  Conversion  Default  Payments.  The accrued
Conversion  Default shall be paid in immediately  available  funds,  or shall be
convertible  into Common Stock at the Conversion  Rate, at the holder's  option,
payable  as  follows:  (i) in the event  holder  elects to take such  payment in
immediately   available  funds,  payments  shall  be  made  to  such  holder  of
outstanding  Notes by the fifth day of the following  calendar month, or (ii) in
the event holder  elects to take such  payment in stock,  the holder may convert
such payment  amount into Common Stock at the  Conversion  Rate at anytime after
the 5th day of the calendar month following the month in which the Authorization
Notice was received,  until the expiration of the Mandatory  Conversion Date (as
defined herein).

                  Nothing herein shall limit the holder's right to pursue actual
damages for the Company's  failure to maintain a sufficient number of authorized
shares of common stock.

(p) Nothing  contained herein shall require the Company to issue upon receipt of
a Notice of  Conversion  in excess of 20% of its issued and  outstanding  Common
Stock as  provided in NASDAQ  Marketplace  Rule 4320 (e) (21) (H) (the "NASD 20%
Rule") unless and until the  Shareholder  Approval (as defined  herein) has been
obtained  by the  Company.  In the event the  Company  does not issue its Common
Stock after receipt of a Notice of Conversion because of the NASD 20% Rule, then
in such event the Company shall pay to the holder 133% of the principal  balance
remaining on the Notes plus all accrued  interest.  Said amount shall be paid to
the holder  within five (5) business  days of the receipt of the faxed Notice of
Conversion from holder.

6.       EVENTS OF DEFAULT.

The  occurrence and  continuance  of any one or more of the following  events is
herein referred to as an Event of Default:

(a) If the Company shall default in converting the applicable  principal  amount
of this Note into Common Stock and delivering  stock  certificates in respect of
such conversion by the Delivery Date; or

(b) If the Company  shall  default in the payment  either in cash or  Additional
Notes of any  installment  of interest on this Note when  payable in  accordance
with the terms thereof for more than ten (10) business days after the same shall
become due; or

(c) If the  Company  shall not,  at the time of receipt of a  Conversion  Notice
hereunder,  have a sufficient  number of authorized  and unissued  shares of its
Common Stock  available for issuance to the holder of this Note upon  conversion
of all or any portion of this Note in accordance with the terms hereof, and such
default  shall not have been  remedied  within sixty (60) calendar days from the
date of such Conversion Notice; or

(d) If the Company shall default in the performance of or compliance with any of
its  material  covenants or  agreements  contained  herein or in the  Securities
Purchase Agreement,  and such default shall not have been remedied within thirty
(30) calendar days after written notice thereof shall have been delivered to the
Company by the holder of this Note; or

(e) If any  representation  or  warranty  made in writing by or on behalf of the
Company  in  the  Securities  Purchase  Agreement  or  in  connection  with  the
transactions contemplated thereby shall prove to have been false or incorrect in
any material respect on the date as of which made; or

(f)  If  the  Company  or any of its  Significant  Subsidiaries  shall  make  an
assignment for the benefit of creditors, or shall admit in writing its inability
to pay its debts as they  become  due,  or shall file a  voluntary  petition  in
bankruptcy  or shall have an order for relief under the  Bankruptcy  Act granted
against it or them, or shall be  adjudicated  a bankrupt or insolvent,  or shall
file any petition or answer seeking for itself any reorganization,  arrangement,
composition, readjustment,  liquidation, dissolution or similar relief under any
present or future statute, law or regulation, or shall file any answer admitting
or not  contesting  the material  allegations  of a petition  filed  against the
Company or any of its Significant Subsidiaries in any such proceeding,  or shall
seek or consent to or acquiesce in the  appointment  of any trustee,  custodian,
receiver or liquidator of the Company or of all or any  substantial  part of the
properties of the Company or any of its Significant Subsidiaries, or the Company
or its directors shall take any action looking to the dissolution or liquidation
of the  Company or any of its  Significant  Subsidiaries.  For  purposes of this
Section  6(f),  the term  Significant  Subsidiary  shall mean and  include  Bass
American Petroleum Corp. and any other person, firm or corporation (i) more than
50% of the common stock or equity  interests of which are owned of record by the
Company or any  Subsidiary of the Company,  and (ii) the net income before taxes
or total assets of which represent more than 15% of the  consolidated net income
before taxes or consolidated  assets of the Company and all of its Subsidiaries;
of

(g) If, within sixty (60) days after the commencement of any proceeding  against
the  Company  or  any  Significant   Subsidiary   seeking  any   reorganization,
arrangement,  composition,  readjustment,  liquidation,  dissolution  or similar
relief under any present or future statute,  law or regulation,  such proceeding
shall  not have  been  dismissed,  or if,  within  sixty  (60)  days  after  the
appointment,  without  the  consent  or  acquiescence  of  the  Company  or  any
Significant Subsidiary, of any trustee, receiver or liquidator of the Company or
any Significant  Subsidiary or of all or any substantial  part of the properties
of the Company or any Significant  Subsidiary,  such appointment  shall not have
been vacated.

(h) The Company  shall have its Common Stock  suspended or delisted from trading
on the NASDAQ SmallCap  market.  Then, or any time  thereafter,  and in each and
every such case,  unless such Event of Default shall have been waived in writing
by the holder (which waiver

shall not be deemed to be a waiver of any  subsequent  default) at the option of
the holder and in the holder's  sole  discretion,  the holder may consider  this
Note immediately due and payable without presentment,  demand, protest or notice
of any kinds,  all of which are hereby expressly  waived,  anything herein or in
any note or other instruments contained to the contrary notwithstanding, and the
holder may  immediately  enforce any and all of the holder's rights and remedies
provided herein or any other rights or remedies afforded by law.

7.       REMEDIES ON DEFAULT; ACCELERATION.

Upon the  occurrence  and during the  continuance  of an Event of  Default,  the
entire  unpaid  balance of  principal  and accrued  interest on this Note may be
accelerated and declared to be immediately due and payable by the Payee. Whether
or not the Notes is accelerated or declared to be immediately due and payable by
the Payee,  the  Company  agrees to pay the maximum  rate of interest  permitted
under New York law from the date any payment of  principal  and/or  interest was
due until the date payment of such amount is actually made. Unless waived by the
written  consent  of persons  holding  66-2/3 % or more in  aggregate  principal
amount  of the  Notes  of the  Company  issued  under  the  Securities  Purchase
Agreement (including the Payee), the Payee and other holders of any of the Notes
at the time  outstanding  may  proceed to protect and enforce the rights of such
holder  by an action at law,  suit in  equity or other  appropriate  proceeding,
whether for the specific  performance of any agreement  contained herein, or for
an injunction  against a violation of any of the terms hereof,  or in aid of the
exercise  of any power  granted  hereby  or by law.  In the event of an Event of
Default,  the  Company  agrees to pay to the  holder  of this Note such  further
amount as shall be  sufficient  to cover  the cost and  expense  of  collection,
including,  without  limitation,  reasonable  attorneys'  fees and  expenses and
reasonable  costs of  investigation.  If the  holder of any Note  shall give any
notice or take any action in  respect of a claimed  default,  the  Company  will
forthwith  give  written  notice  thereof to the holder of this Note at the time
outstanding  describing  the  notice or  action  and the  nature of the  claimed
default.  No course of  dealing  and no delay on the part of the  holder of this
Note or the holder of any other Note in  exercising  any right,  power or remedy
shall operate as a waiver thereof or otherwise  prejudice such holder's  rights,
powers and remedies.  No right, power or remedy conferred hereby upon the holder
hereof shall be exclusive of any other right, power or remedy referred to herein
nor now or hereafter available at law, in equity, by statute or otherwise.

(8)      WAIVER OF PRESENTMENT; MAXIMUM RATE OF INTEREST.

(a) The Company and each surety,  endorser,  and guarantor or other party liable
for the payment of any sums of money  payable on this Note  severally  waive all
demands for payment,  presentations for payment, notices of dishonor, notices of
intention to accelerate maturity, notices of acceleration of maturity, protests,
and notices of protest, to the extent required by law.

(b) It is  expressly  stipulated  and agreed to be the intent of the Company and
the  holders  of this  Note at all  times  to  comply  with the  applicable  law
governing  the maximum  rate of interest  payable on or in  connection  with all
indebtedness and transactions hereunder (or applicable United States federal law
to the extent  that it permits  holders of this Note to  contract  for,  charge,
take, reserve or receive a greater amount of interest). If the applicable law is
ever  judicially  interpreted  so as to render  usurious  any amount of money or
other  consideration  called for hereunder,  or contracted for, charged,  taken,
reserved  or  received  with  respect  to any loan or advance  hereunder,  or if
acceleration of the maturity of the Note or the indebtedness hereunder or if any
prepayment by the Company  results in the Company's  having paid any interest in
excess of that  permitted by law, then it is the Company's and holders'  express
intent that all excess cash amounts theretofore  collected by holder by credited
on the principal balance of this Note (or if this Note has been or would thereby
be paid in full,  refunded  to the  Company),  and the  provisions  of this Note
immediately be deemed reformed and the amounts thereafter  collectible hereunder
reduced,  without the necessity of the  execution of any new document,  so as to
comply with the applicable  law, but so as to permit the recovery of the fullest
amount otherwise called for hereunder.  The right to accelerate maturity of this
Note  does not  include  the  right to  accelerate  any  interest  which has not
otherwise accrued on the date of such  acceleration,  and holder does not intend
to collect any unearned interest in the event of acceleration.

9.       NOTICES.

All notices,  requests, demands or other communications under this Note shall be
given in the same manner as provided in the Securities Purchase Agreement.

10.      GOVERNING LAW;  RESOLUTION OF DISPUTES.

(a) This Note shall be governed by, and construed and  interpreted in accordance
with,  the laws of the State of New York,  without  giving effect to conflict of
law principles.

(b) Any dispute  regarding the  interpretation or application of this Note which
cannot be settled  among the parties  shall be  resolved  in New York,  New York
final and binding arbitration in accordance with the then obtaining rules of the
American  Arbitration  Association.  There shall be appointed three arbitrators,
one of whom shall be selected by the  Company,  the second by the holder and the
third  by  mutual  agreement  of  the  parties  or by the  American  Arbitration
Association.  The decision of the arbitrators shall be final and upon the holder
and the Company and may be  enforced by the  prevailing  party or parties in any
court of  competent  jurisdiction.  Each party shall bear their own costs of the
arbitration and shall share equally the costs of the arbitrators.

11.      SUBORDINATION TO SENIOR DEBT.

(a) Payment of the  principal  of and  interest on this Note and all other Notes
issued under the Securities  Purchase  Agreement is subordinated,  to the extent
and in the manner provided  herein,  to the prior payment of all indebtedness of
the Company and/or all Subsidiaries of the Company,  for money borrowed or other
obligations which is now or may hereafter be owed (collectively,  "Senior Debt")
to any bank,  commercial  finance company,  factor,  insurance  company or other
institution the lending activities are regulated by law (individually, a "Senior
Lender" and collectively,  "Senior Lenders"), which may, hereafter on any one or
more  occasions  provide  financing  to the Company or any of its  Subsidiaries,
secured by liens on any of the assets and  properties of the Company  and/or any
of  its  Subsidiaries   (individually   and   collectively,   an  "Institutional
Borrower").

(b)  Upon  any  payment  or   distribution   of  assets  or  securities  of  the
Institutional Borrower, as the case may be, of any kind or character, whether in
cash,  property or  securities,  upon any  dissolution or winding up or total or
partial  liquidation or reorganization of the  Institutional  Borrower,  whether
voluntary or  involuntary or in bankruptcy,  insolvency,  receivership  or other
proceedings,  all amounts  payable under Senior Debt shall first be paid in full
in cash, or payment provided for in cash or cash equivalents,  before the holder
hereof  shall be entitled to receive any payment on account of  principal  of or
interest  on this Note.  Before  any  payment  may be made by the  Institutional
Borrower of the principal of or interest on this Note upon any such  dissolution
or winding up or liquidation or  reorganization,  any payment or distribution of
assets or  securities  of the  Institutional  Borrower of any kind or character,
whether in cash,  property or  securities,  to which the holder  hereof would be
entitled,  except for the  provisions  of this  Section 11, shall be made by the
Institutional  Borrower or by any receiver,  trustee in bankruptcy,  liquidating
trustee, agent or other person making such payment or distribution,  directly to
the holders of Senior Debt or their  representatives  to the extent necessary to
pay all such Senior Debt in full after giving effect to any  concurrent  payment
or distribution to the holders of such Senior Debt.

(c) Upon the happening of any default in payment of the principal of or interest
on any Senior Debt, then, unless and until such default shall have been cured or
waived or shall have  ceased to exist,  no direct or  indirect  payment in cash,
property or securities,  by set-off or otherwise,  shall be made or agreed to be
made by the Institutional Borrower on account of the principal of or interest on
this Note.

(d) Upon the  happening of an event of default  (other than under  circumstances
when the terms of Section 11(c) above are applicable) with respect to any Senior
Debt  pursuant to which the holder  thereof is entitled  under the terms of such
Senior Debt to accelerate the maturity thereof,  and upon written notice thereof
given to each of the Institutional  Borrower and the holder of this Note by such
holder of Senior Debt ("Payment  Notice"),  then, unless and until such event of
default shall have been cured or waived or shall have ceased to exist, no action
shall or may be taken for  collection  of any  amounts  under this Note,  and no
direct or  indirect  payment  in cash,  property  or  securities,  by set-off or
otherwise,  shall be made or agreed to be made by the Institutional  Borrower an
account of the  principal of or interest on this Note until such Senior Debt has
been paid in full accordance with its terms.

(e) In the event than,  notwithstanding  the  provisions of this Section 11, any
payment shall be made on account of the principal of or interest on this Note in
contravention  of such  provisions,  then  such  payment  shall  be held for the
benefit of, and shall be paid over and  delivered to, the holders of such Senior
Debt  remaining  unpaid to the extent  necessary to pay in full the principal of
and  interest  on such  Senior Debt in  accordance  with its terms after  giving
effect to any concurrent  payment or  distribution to the holders of such Senior
Debt.

(f) Nothing  contained in this Section 11 shall (i) impair the conversion rights
of the holder hereof referred to in Section 5 above, (ii) impair, as between the
Company and the holder of this Note,  the  obligation  of the Company,  which is
absolute and  unconditional,  to pay to the holder hereof principal and interest
as the same shall become due and  payable,  or (iii)  prevent the holder  hereof
from exercising all rights,  powers and remedies  otherwise  provided herein, in
the  Securities  Purchase  Agreement  or by  applicable  law, all subject to the
express limitations provided herein.

(g) Upon the occurrence of an Event of Default, if any Senior Debt shall then be
outstanding,  no  acceleration  of the  maturity of this Note shall be effective
until the earlier of (i) ten (10) days shall have passed  following  the date of
delivery to the  Institutional  Borrower by a Senior Lender(s) of written notice
of acceleration of any Senior Debt, or (ii) the maturity of any then outstanding
Senior  Debt  shall have been  accelerated  by reason of a default  hereon.  The
Company may pay the holder  hereof any  defaulted  payment and all other amounts
due following any such acceleration of the maturity of this Note if this Section
11 would not prohibit such payment to be made at that time.

(h) Upon  payment  in full of all Senior  Debt,  the Payee of this Note shall be
subrogated  to the rights of the holder or holders of Senior Debt to receive all
payments or  distributions  applicable on Senior Debt to the extent of the prior
application  thereto of moneys or other assets which would have been received in
respect  of this  Note,  but  for  these  subordination  provisions,  until  the
principal of, and interest on, this Note shall have been paid in full.

(i) The Payee, by accepting this Note (A) shall be bound by all of the foregoing
subordination  provisions;  and (B)  agrees  expressly  for the  benefit  of the
present  and  future  holders  of Senior  Debt that this Note is  subject to the
foregoing subordination provisions.

(j) The  foregoing  subordination  provisions  shall be for the  benefit  of all
holders of Senior Debt from time to time  outstanding,  and each of such holders
may proceed to enforce such provisions either directly against the holder hereof
or in any other manner provided by law.

(k)  Notwithstanding  anything to the contrary set forth in this Section 11, the
interest  of the  holder of this Note (as  specified  in  Section  12 hereof) is
subject and  subordinated  only to the first lien and  security  interest of any
holder of Senior Debt of the Company, unless otherwise expressly consented to in
writing by the Payee.

12.      SUCCESSORS AND ASSIGNS.

This Note shall be binding  upon and inure to the benefit of the Company and the
holder hereof and their respective  successors and assigns;  provided,  however,
that the  Company may not  transfer  or assign any of its rights or  obligations
hereunder without the prior written consent of the holder hereof.

13.      UNENFORCEABLE PROVISIONS.

If any provision of this Note is invalid, illegal or unenforceable,  the balance
of this Note shall remain in effect, and if any provision is inapplicable to any
person or circumstance,  it shall  nevertheless  remain  applicable to all other
persons and circumstances.

IN WITNESS WHEREOF,  the Company has caused this Note to be executed by its duly
authorized officers as of the date first set forth above.

                                   ENVIRONMENTAL REMEDIATION HOLDING CORPORATION

                                 By:
                                    --------------------------------------------
                                    Sam Bass, Chairman


Attest:


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