W911WN-09-B-0007-0003.pdf

W81ET491342797

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

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.

15A. NAME AND TITLE OF SIGNER (Type or print)

30-105-04EXCEPTION TO SF 30

APPROVED BY OIRM 11-84

STANDARD FORM 30 (Rev. 10-83) Prescribed by GSA

FAR (48 CFR) 53.243

RE: Emsworth Locks and Dam, Back Channel Abutment Stabilization

This amendment is issued to answer questions.

See Summary of Changes for details.

1. CONTRACT ID CODE PAGE OF PAGES

J 1 3

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

16C. DATE SIGNED

BY 22-Jul-2009

16B. UNITED STATES OF AMERICA15C. DATE SIGNED15B. CONTRACTOR/OFFEROR

(Signature of Contracting Officer)(Signature of person authorized to sign)

8. NAME AND ADDRESS OF CONTRACTOR (No., Street, County, State and Zip Code) X W911WN-09-B-0007

X 9B. DATED (SEE ITEM 11)

18-Jun-2009

10B. DATED (SEE ITEM 13)

9A. AMENDMENT OF SOLICITATION NO.

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

X The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offer is extended, X is not extended.

Offer 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:

(a) By completing Items 8 and 15, and returning 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. 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. 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.

12. ACCOUNTING AND APPROPRIATION DATA (If required)

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS.

IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE

CONTRACT ORDER NO. IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation date, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(B).

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority)

E. IMPORTANT: Contractor is not, is required to sign this document and return copies to the issuing office.

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

10A. MOD. OF CONTRACT/ORDER NO.

2. AMENDMENT/MODIFICATION NO. 5. PROJECT NO.(If applicable)

6. ISSUED BY

3. EFFECTIVE DATE

22-Jul-2009

CODE

U.S. ARMY ENGINEER DISTRICT, PITTSBURGH

ATTN CECT-LRP

W S MOORHEAD FEDERAL BUILDING

1000 LIBERTY AVENUE ROOM 2116

PITTSBURGH PA 15222-4186

W911WN 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W911WN-09-B-0007

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

SECTION 00800 - SPECIAL CONTRACT REQUIREMENTS

The following have been added by full text:

AMENDMENT 0003

Q33. Division 2, section 31 6333, Micropiles, paragraph 2,1,2 requires that surface of casing be roughened or prepared as required "to obtain the required minimum ultimate grout bond strength, Drawing S-3125 does not show any surface treatment or required ultimate bond strength, What surface preparation is required?

A33. See Question 24 (Q24)

Q34. Division 2, section 31 6333, Micropiles, paragraph 2,2,1 requires that casing joints develop 100% of the tensile strength of the casing, This is only nearly possible by using external couplers, since welding of N-80 casing requires special treatment.

Will industry typical flush joint threads be acceptable and this requirement waived?

A34. See Question 24 (Q24). Note restrictions on location of joints with use of typical threaded flush joints.

Q35. Division 2, section 31 6333, Micropiles, paragraph 3,2,3 essentially requires duplex drilling with water for the soil stratum, Drawing S-3125 requires a 9 inch hole in rock, Therefore, drilling with larger temporary casing and a larger corehole in the abutment wall seems to be required, Division 2, section 31 6333, Micropiles, paragraph 3.2.9 requires water testing of the rock portion and then grouting and redrilling. With full length 7 inch casing, this will require oversized temporary casing which may become grouted in place. Is temporary casing really intended? Can a smaller rock socket of equivalent structural strength and perimeter surface area be substituted?

A35. See Question 24 (Q24). Also, note that any Contractor-proposed alternative micropile configuration will have to be submitted in writing for Government approval, and must include a statement of the minimum dimensions that will be achieved, supporting calculations demonstrating equivalence to the configuration on the Contract Drawings, and detailed descriptions of the planned drilling methods, micropile construction sequence, and installation procedures (with attention to procedures for watertightness testing of the rock zone [with or without a pregrouting and redrilling phase], and effective grouting of the casing into the rock socket and through the existing abutment wall).

Q36. USACE response to Q23 indicates that they have the same predicament that the contractors have regarding material quantities. In fairness to the contractors and to insure that

W911WN-09-B-0007

USACE receives similar, responsive bids from all contractors, assumed bid quantities should be provided.

A36. See Amendment 0001 Question 23 (Q23).

Q37. Please clarify Note 6 on Sheet S-11-32. What is the expected quantity and how is additional Rip Rap to be paid?

A37. See Amendment 0001 Question 23 (Q23).

Q38. What is the schedule for gate activity for the main channel? This affects the backchannel flow.

A38. See Amendment 0001 Question 1 (Q1).

Q39. Specification 3.2.2 31-68-13 Page 12 seems to require core drilling (Shall) but leaves options. Could you please clarify?

A39. See Amendment 0002 Question 26 (Q26)

Q40. Section 31-62-23.13 Page 9, 3.2.1, if a casing cannot be driven due to a deep obstruction, how will drilling out to remove the obstruction and/or replacing and redrilling casing be paid?

A40. See Amendment 0001 Question 14 (Q14) and Question 15 (Q15).

(End of Summary of Changes)