Amendment_0003.pdf

W81G6741139818

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

The purpose of this amendment is to incorporate the question that w as accidentally omitted from Amendment 0002. The “Response regarding specific gravity inquiry” has been moved dow n and the actual bidder inquiry has been inserted after “Question:”. See “Summary of Changes”, the question has been highlighted in yellow . All other terms and conditions remain unchanged.

1. CONTRACT ID CODE PAGE OF PAGES

J 1 2

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

16C. DATE SIGNED

BY 07-Aug-2015

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 W912ES-15-B-0001

X 9B. DATED (SEE ITEM 11)

29-Jun-2015

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 1 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

07-Aug-2015

CODE

CONTRACTING DIVISION

USACE - ST. PAUL

180 5TH STREET E SUITE 700

ST. PAUL MN 55101-1678

W912ES 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W912ES-15-B-0001

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

SECTION SF 30 - BLOCK 14 CONTINUATION PAGE

The following have been added by full text:

AMENDMENT 0003

Question: Please clarify required specific gravity of rip rap. Spec section 35 31 19.00 13 paragraph 2.2.1 specifies the specific gravity of stone to be 2.6. However on the gradation curve 2.65 and 2.7 are shown. Also will additional sources be considered if the rock meets the required specific gravity? Sources that were on the approved list that are available to produce the stone are 100 + miles from site.

Answer: Response regarding specific gravity inquiry: The specification requires a specific gravity (Gs) not less than 2.6. The plots provided as a reference of what the gradation is for an average (or expected value) of Gs of 2.65.

The gradations change based on the specific gravity. However, the change is minor for a Gs between 2.6 and 2.7, which is why an average plot with Gs = 2.65 is provided. The two riprap gradation plots should have, however, stated that the specific gravity is 2.65. This has been corrected in the amendment.

Response regarding stone sources: As stated in the specifications, the Contractor is free to propose alternative sources. However, based on flow conditions at this site, it was decided that allowable riprap sources would be restricted to those with igneous or metamorphic rock such as listed in the approved material sources. Amendment 1 opened up the approved material sources for bedding to include limestone quarries. No additional sources were provided for the riprap. Paragraph 2.1 has been rewritten to clarify these requirements.

The following paragraph has been revised to clarify what materials are acceptable to be used for riprap and for bedding. The attached file shows the two riprap gradations with the identified specific gravity of the plot changed to

2.65 to match the plots.

2.1 STONE SOURCES AND EVALUATION

Stone materials shall be quarried rock produced from the approved material sources listed in the attachments at the end of this section. The second page of approved material sources pertains to sources that are approved only for bedding material. Riprap shall be composed of igneous or metamorphic stone. In addition to igneous or metamorphic stone, bedding may be composed of limestone. If the Contractor proposes to furnish materials from a source not listed, the Government Geologist will make such investigations and evaluations as necessary to determine whether or not materials with acceptable durability can be produced from the proposed source. The rock supplied shall be produced from one rock formation to provide a product of uniform appearance. The Contractor shall not supply rock from various formations, unless approved by the Contracting Officer. The Contractor shall not mix field-stone with quarried rock. It is the Contractor's responsibility to determine that the stone source or combination of sources selected is capable of providing the quality, quantities and gradation needed and at the rate needed to maintain the scheduled progress of the work.

(End of Summary of Changes)