N4008017R1045_0002.pdf

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

N40080-17-R-1045 Replace Existing Waterline from TBN to WTBN

SEE CONTINUATION PAGE

1. CONTRACT ID CODE PAGE OF PAGES

J 1 4

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

16C. DATE SIGNED

BY 20-Sep-2017

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 N4008017R1045

X 9B. DATED (SEE ITEM 11)

05-Sep-2017

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 X is extended, 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

20-Sep-2017

CODE

ROICC

BLDG. 2004 BARNETT AVE

P.O. BOX 1855

QUANTICO VA 22134-0855

N40080 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

N4008017R1045

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:

THE PURPOSE OF THIS AMENDMENT IS TO PROVIDE ANSWERS TO RFIs SUBMITTED ON

SEPTEMBER 15, 2017 AND EXTEND THE PROPOSAL DUE DATE.

SOLICITATION CLOSING DATE IS EXTENDED UNTIL MONDAY SEPTEMBER 25, 2017 PROPOSALS

ARE DUE BY 12:00PM EST

RFI QUESTIONS AND ANSWERS---N4008017R1045 Replace Waterline from TBS to WTBN

1. Can Application Trial be closed to the public during construction?

* YES. FEAD (ROICC) and Contractor must coordinate with Range Control Branch.

2. Please provide all Existing Utility crossings horizontal and vertical locations.

* Horizontal utility locations shown on Existing Conditions. Plans C101 ‐ C109; Horizontal and Vertical locations of utilities are shown on Utilities Plans. . ‐ C301 ‐ C318.

3. What is the governmental cost/fee for the UXO briefing per UXO note #1 CONTRACTOR UXO BRIEFING on Sheet 2 of 61?

* Division 01, Mobilization type of expense ‐ to be calculated and proposed by the Contractor.

4. What is the governmental cost/fee to complete the UXO Explosive Safety Submission Determination Request (ESSDR) per UXO note #2 EXPLOSIVE SAFETY & UXO TECH III OVERSIGHT on Sheet 3 of 61?

* Division 01, Mobilization type of expense ‐ to be calculated and proposed by the Contractor.

5. Have the required wetland permits been obtained?

* Installed under or alongside trail, to be jack and bored under stream, approved through a painstaking NEPA process ‐ wetlands permits not‐applicable and do not apply. Categorical Exclusion stated that there are no wetlands on project site.

6. Can work hours listed on Specification Page 4 Section 01 14 00 Paragraph 1.5.5 as: Regular working hours must consist of an 8 1/2 hour period, between 7 a.m. and 3:30 p.m., Monday through Friday, excluding Government holidays be extended?

* YES ‐ working hour extensions / waivers may be discussed and agreed‐upon ‐ post‐award.

7. What fill and backfill is required to be compacted to 95% of ASTM D1557 (a modified proctor)? '

* Whether onsite or imported, fill and backfill is to be compacted to 95% of ASTM D1557 (a modified proctor).

8. Detail A3/C‐502 on Plan Sheet 48 does not show grout filling the interior annular space between carrier pipe and the casing pipe; yet specification Page 8 Section 33 05 23 Paragraph 2.3.2 Grout states that pressure grouting is required. Please clarify.

* Specifications have precedence over Plans. Specification Section 33 05 23 TRENCHLESS UTILITY INSTALLATION (Beaver Dam Run), page 8, paragraph 2.3.2 Grout ‐ pressure grouting is required ‐ Correct.

9. Specification Page 12 Section 33 05 23 Trenchless Utility Installation (Beaver Dam Run) Paragraph 3.4.1 Tolerances states: Maximum allowable lateral deviation is 5 inches; maximum allowable vertical deviation is _____ inches in the position of every completed 300 foot section of jacked pipe casings. What is the maximum allowable vertical deviation?

* 5 inches

10. Specification Section 33 05 23 Trenchless Utility Installation (Beaver Dam Run), page 13, paragraph 3.5.1.2.b Supplemental Requirements states: Perform all surveys to an accuracy of 0.01 foot. Survey every _____ feet of casing pipe advancement. What is the quantity of casing advancement requiring survey

* Every 50 Feet. The one Jack & Bore (i.e. ‐ Trenchless Utility Installation) under Beaver Dam Run is about 50 feet in length.

11. Ref spec not located: Can Imported iron & steel products be used for the waterline materials for this project?

* NEVER. Not for this project, nor for any federal government project.

12. Ref spec section 33‐11‐00, page 5, paragraph 2.2.1.2: Can a manufacturer's restrained joint Pipe, such as US Pipe's TR Flex be used for the project? For reference, TR Flex does use a Tyton Joint push on gasket (per para a).

* The existing waterline had a history of erupting / busting‐out of its trench because of water‐hammer and sudden pump pressure increases ‐ Reason 1 to keep real restrained‐ mechanical‐joint attachments. Thirty‐ five years ago, when I was a Construction Engineer, I have burnt in my mind the memory of every third/fourth push‐on culvert pipe's o‐ring ‐joints failing inspection ‐ Reason 2 to keep real restrained‐ mechanical‐joint attachments.

13. Ref spec section 33‐11‐00, page 6, paragraph 2.3.1. & plan page C501, detail A1: The spec indicates valves are AWWA C500 with flanged connections and in pits. The detail indicates buried valves with mechanical joints and valve boxes. Can buried AWWA C509 valves with MJ connections and valve boxes be used for this project?

* Yes, buried AWWA C509 valves with MJ connections and valve boxes may be used for this project. If it is good for Prince William County's Service Authority, it is good for the base.

14. Ref plan page C501, detail A5: For the blow‐off's connection to the 12 main, shall an MJ Tee and tapped MJ plug be used (and is so, what size plug please), or a 12x2 MJ Tapt Tee?

* A Means & Methods type‐of‐question. To‐be Reviewed ‐ Determined Post‐Award.

15. Please provide a copy of the pre-bid sign in sheet

* Provided in amendment 0001 on NECO

(End of Summary of Changes)