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<td colspan="13"><strong>AMENDMENT OF SOLICITATION/MODIFICATION OF
CONTRACT</strong></td>
<td colspan="2"></td>
<td colspan="3"><blockquote>
<p>1. CONTRACT ID CODE</p>
</blockquote>
<p>     </p></td>
<td colspan="3"><blockquote>
<p>PAGE<br />
1 of 3</p>
</blockquote></td>
</tr>
<tr class="even">
<td colspan="4"><blockquote>
<p>2. AMENDMENT/MODIFICATION NO.</p>
</blockquote></td>
<td colspan="5"><blockquote>
<p>3. EFFECTIVE DATE</p>
</blockquote></td>
<td colspan="8"><blockquote>
<p>4. REQUISITION/PURCHASE NO.</p>
</blockquote></td>
<td colspan="4"><blockquote>
<p>5. PROJECT NO. <em>(If applicable)</em></p>
</blockquote></td>
</tr>
<tr class="odd">
<td colspan="4"><blockquote>
<p>2</p>
</blockquote></td>
<td colspan="5"><blockquote>
<p>5-10-02</p>
</blockquote></td>
<td colspan="8"><blockquote>
<p>198147</p>
</blockquote></td>
<td colspan="4"><blockquote>
<p>     </p>
</blockquote></td>
</tr>
<tr class="even">
<td colspan="3"><blockquote>
<p>6. ISSUED BY</p>
</blockquote></td>
<td colspan="5">CODE</td>
<td colspan="3"><blockquote>
<p>0613/GMW</p>
</blockquote></td>
<td colspan="9"><blockquote>
<p>7. ADMINISTERED BY <em>(If other than Item 6)</em> CODE</p>
</blockquote></td>
<td><blockquote>
<p>     </p>
</blockquote></td>
</tr>
<tr class="odd">
<td colspan="11"><blockquote>
<p>NASA Glenn Research Center<br />
Attn: Glen M. Williams<br />
Technology Support Branch<br />
21000 Brookpark Road, Mail Stop 500-306<br />
Cleveland, OH 44135-3191</p>
</blockquote></td>
<td colspan="10"><blockquote>
<p>     </p>
</blockquote></td>
</tr>
<tr class="even">
<td colspan="12"><blockquote>
<p>8. NAME AND ADDRESS OF CONTRACTOR <em>(No., street, county, State and
Zip Code)</em></p>
</blockquote></td>
<td colspan="4"></td>
<td colspan="5"><blockquote>
<p>9A. AMENDMENT OF SOLICITATION NO.</p>
</blockquote></td>
</tr>
<tr class="odd">
<td colspan="12"><blockquote>
<p>To All Offerors/Bidders</p>
</blockquote></td>
<td colspan="4"></td>
<td colspan="5"><blockquote>
<p>NAS3-198147</p>
<p>9B. DATED <em>(SEE ITEM 11)</em></p>
</blockquote>
<p>     </p>
<p>10A. MODIFICATION OF CONTRACT/ORDER NO.</p>
<p>     </p>
<p>10B. DATED <em>(SEE ITEM 13)</em></p></td>
</tr>
<tr class="even">
<td colspan="6">CODE      </td>
<td colspan="6"><blockquote>
<p>FACILITY CODE      </p>
</blockquote></td>
<td colspan="4"></td>
<td colspan="5"><blockquote>
<p>     </p>
</blockquote></td>
</tr>
<tr class="odd">
<td colspan="21"><blockquote>
<p><strong>11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF
SOLICITATIONS</strong></p>
</blockquote></td>
</tr>
<tr class="even">
<td colspan="21"><p> The above numbered solicitation is amended as set
forth in Item 14. The hour and date specified for receipt of Offers is
extended, is not extended.<br />
Offers must acknowledge receipt of this amendment prior to the hour and
date specified in the solicitation or as amended, by one of the
following methods:</p>
<p>(a) By completing Items 8 and 15, and returning
<strong><u>   </u></strong> copies of the amendment; (b) By
acknowledging receipt of this amendment on each copy of the offer
submitted; or (c) By separate letter or telegram which includes a
reference to the solicitation and amendment numbers. <strong>FAILURE OF
YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE
RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN
REJECTION OF YOUR OFFER.</strong> If by virtue of this amendment you
desire to change an offer already submitted, such change may be made by
telegram or letter, provided each telegram or letter makes reference to
the solicitation and this amendment, and is received prior to the
opening hour and date specified.</p></td>
</tr>
<tr class="odd">
<td colspan="21"><blockquote>
<p>12. ACCOUNTING AND APPROPRIATION DATA <em>(If required)</em></p>
</blockquote></td>
</tr>
<tr class="even">
<td colspan="21"><blockquote>
<p>     </p>
</blockquote></td>
</tr>
<tr class="odd">
<td colspan="21"><blockquote>
<p><strong>13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF
CONTRACTS/ORDERS,<br />
IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.</strong></p>
</blockquote></td>
</tr>
<tr class="even">
<td></td>
<td>A</td>
<td colspan="19"><p>THIS CHANGE ORDER IS ISSUED PURSUANT TO <em>(Specify
authority)</em>       THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE
CONTRACT ORDER NO. IN ITEM 10A.</p>
<p>     </p></td>
</tr>
<tr class="odd">
<td></td>
<td><blockquote>
<p>B</p>
</blockquote></td>
<td colspan="19"><blockquote>
<p>THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE
ADMINISTRATIVE CHANGES <em>(Such as changes in paying office,
appropriation date, etc.)</em>       SET FORTH IN ITEM 14, PURSUANT TO
THE AUTHORITY OF FAR 43.103(b).</p>
<p>     </p>
</blockquote></td>
</tr>
<tr class="even">
<td></td>
<td><blockquote>
<p>C</p>
</blockquote></td>
<td colspan="19"><p>THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT
TO AUTHORITY OF:</p>
<p>     </p></td>
</tr>
<tr class="odd">
<td></td>
<td><blockquote>
<p>D</p>
</blockquote></td>
<td colspan="19"><blockquote>
<p>OTHER <em>(Specify type of modification and authority)</em></p>
<p>     </p>
</blockquote></td>
</tr>
<tr class="even">
<td colspan="21"><blockquote>
<p><strong>E. IMPORTANT: Contractor</strong> <strong>is not,</strong>
<strong>is required to sign this document and return <u>   </u> copies
to the issuing office.</strong></p>
</blockquote></td>
</tr>
<tr class="odd">
<td colspan="21"><blockquote>
<p>14. DESCRIPTION OF AMENDMENT/MODIFICATION <em>(Organized by UCF
section headings, including solicitation/contract subject matter where
feasible.)</em></p>
</blockquote></td>
</tr>
<tr class="even">
<td colspan="21"><blockquote>
<p>     </p>
</blockquote></td>
</tr>
<tr class="odd">
<td colspan="21">Except as provided herein, all terms and conditions of
the document referenced in Item 9A or 10A, as heretofore changed,
remains unchanged and in full force and effect.</td>
</tr>
<tr class="even">
<td colspan="10"><blockquote>
<p>15A. NAME AND TITLE OF SIGNER <em>(Type or print)</em></p>
</blockquote></td>
<td colspan="11"><blockquote>
<p>16A. NAME AND TITLE OF CONTRACTING OFFICER <em>(Type or
print)</em></p>
</blockquote></td>
</tr>
<tr class="odd">
<td colspan="10"></td>
<td colspan="11">Glen M. Williams, Contracting Officer</td>
</tr>
<tr class="even">
<td colspan="7"><blockquote>
<p>15B. CONTRACTOR/OFFEROR</p>
</blockquote></td>
<td colspan="3"><blockquote>
<p>15C. DATE SIGNED</p>
</blockquote></td>
<td colspan="9"><blockquote>
<p>16B. UNITED STATES OF AMERICA</p>
</blockquote></td>
<td colspan="2"><blockquote>
<p>16C. DATE SIGNED</p>
</blockquote></td>
</tr>
<tr class="odd">
<td colspan="7">BY_________________________________________</td>
<td colspan="3"></td>
<td colspan="9">BY_________________________________________</td>
<td colspan="2">     </td>
</tr>
<tr class="even">
<td colspan="7"><em>(Signature of person authorized to sign)</em></td>
<td colspan="3"></td>
<td colspan="9"><em>(Signature of Contracting Officer)</em></td>
<td colspan="2"></td>
</tr>
<tr class="odd">
<td colspan="5">NSN 7540-01-152-8070<br />
PREVIOUS EDITION NOT USABLE</td>
<td colspan="9">30-105</td>
<td colspan="7"><strong>STANDARD FORM 30 (REV. 10-83) (GRC Overprint
09/01)</strong><br />
Prescribed by GSA<br />
FAR (48 CFR) 53.243</td>
</tr>
</tbody>
</table>

The following questions and answers are hereby provided.

1\) There doesn\'t seem to be any clear splice. Do you expect this to be

made in one piece or is there an allowance for splicing two pieces
together?

We have fabricated smaller parts with disolvable mandrels, if this is

required.

There is allowance for splicing two pieces together. There also is
allowance

for multiple layers of aluminum foil. There is a note on the drawings
that

calls out that overlap joints are allowed at the end regions of the
tank.

Disolvable mandrels are not required.

2\) I assume this is just a pre-preg lay-up from the drawing. Am I
correct

in this assumption? Just curious if it is expected to be a filament
wound

part because we don\'t have that capability in-house.

This is a pre-preg lay-up. This assumption is correct.

3\) Are the foil laminates (thickness, gores) designed or is that up to
the

contractor?

The A/R callout on the aluminum foil gives the fabricator the latitude
to

select different thickness of aluminum foil. The foil laminates are to
be

designed by the contractor.

4)What is the max weight?

There is no maximum weight called out. Weight is a consideration, but

not that important at this point in the development of this technology.

5)What are penalties for past due (beyond 60 days)?

Offerors that propose a delivery beyond 60 days will not be disqualified

from the evaluations. However, preference will be given to those that

propose 60 days or less. An awardee that proposes to deliver in 60 days

or less will be held to that proposal and failure to deliver in the time

frame stated in the resultant contract will subject that offeror to the

Default clause.

6\) What are the penalties for failure of leak test?

Failure of the leak test would result in the tank being rejected for
nonconformance to the specifications and returned to the contractor

for repair or replacement. If delivery of a tank(s) takes beyond the

delivery schedule stated in the offeror's proposal and resultant
contract

the offeror will be subject to the Default clause of the contract.

7\) Is this a development effort or are these flight units?

This is a development effort and not a flight program. These tanks are

going to stay on the ground.

8\) Has this foil liner technology been demonstrated through leak tests

previously? At what strain level?

These tanks have never been built before. The aluminum foil is called

out as required. Aluminum foil liners have been used before, but data,
if any, is not available.

9\) If filament winding can be shown to be more cost effective, lower

risk and lighter, may the contractor use this technology?

Filiment winding might be an alternative, but the offeror would need to
provide data with their offer that demonstrates that this works with the

materials and with the embedded structures specified in the
specifications/drawings.

The close date for receipt of offers remains unchanged at June 3, 2002,
4:30 pm local time.