Amendment 0001.pdf

ED-18-059

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 subject solicitation for Mississippi River and Tributaries (MR&T), Atchafalaya Basin Levee District (ABLD), Low er West Mississippi Seepage Control Project, 8/L Sta. 5805+00 to 8/L Sta. 5841+00, Ascension Parish, LA (ED-18-059) is hereby amended as follow s:

1.) Provides Government responses to bidder questions on attached pages.

2.) To extend the bid opening due date and time to 17 December 2019 at 2:00PM (local time).

3.) Prospective contractors are required to be registered in SAM at the time an offer is submitted in order to comply w ith the annual representations and certifications requirements. Refer to FAR 4.1102 for additional guidance.

4.) To provide a draw ing change, as stated in the attached.

5.) To provide a revision on Page 19, paragrah 2.3 of said solicitation, as stated in the attached.

***PLEASE ACKNOWLEDGE THIS AMENDMENT AND SUBMIT WITH YOUR BID***

1. CONTRACT ID CODE PAGE OF PAGES

1 6

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

16C. DATE SIGNED

BY 25-Nov-2019

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 W912P820B0021

X 9B. DATED (SEE ITEM 11)

13-Nov-2019

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

25-Nov-2019

CODE

USACE, CONTRACTING DIVISION

ATTN: CEMVN-CT, ROOM 172

7400 LEAKE AVE.

NEW ORLEANS LA 70118-3651

W912P8 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W912P820B0021

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

The following items are applicable to this modification:

AMENDMENT 0001

Amendment 0001 Bidder Questions and Government Responses

Q1: Specification – Ascension Parish LA Relief Well

When reading the specification the min and max percent by weight passing the screen is backwards. For example on the #25 sieve the spec is saying that Max % passing is 34% and the Min % passing is 87.6. This would mean that there has to be at least 87.6% passing and no more than 34%. It seems that the two columns are switched. It should read that there has to be at least 34% passing (min) but not more then 87.6% passing (max). When looking at the graph below you will see that the lower spec limit aligns with the Max and the Upper Spec Limit aligns with the Min in the spec.

Here is the recommended change in the specification (switch the Min and Max).

US Sieve

MAX %

Passing

MIN %

Passing

#18 100 93.3 #20 100 72.4 #25 87.6 35.0 #30 60 10.0 #35 23 0

I have also included a sieve analysis chart showing the Min and Max Lines that correlate with the recommended change in specification.

A1: The information listed in the two columns provided in the specs should be used to plot two separate lines.

The two lines provide upper (max) and lower (min) boundaries.

The gradation curve for the filter material must fall within those boundaries.

Q2: Specification Section 33 26 00.00 12

1.7.3 Drilling Log, Sampling, and Testing. Item 7.

Please clarify as to whether split spoon samples are required to be collected in order to identify and seek USACE approval of soil intervals where screen and solid pipe sections should be installed. Criteria and site conditions indicate that split‐spoon samples will be collected at 2.5 foot intervals in order to determine the depth intervals where well screens and solid pipe sections will be installed. It also states that grain size analysis (ASTM C136) or Atterberg limit test be performed on all split spoon samples.

This would be consistent with the recently awarded Upper Pontchartrain Seepage Project.

A2: Collecting and testing of samples (per the specifications) will be required in order to identify and seek. USACE approval of soil intervals where screen and solid pipe sections should be installed.

Q3: Are the permanent materials to be installed tax exempt?

A3: USACE‐MVN does not provide tax exemption certificates for construction projects in the State of Louisiana

Q4: Specification Section 33 26 00.00 12

In regards to CLIN 0009 Relief Wells, 0009AA is First 1,284LF and 0009AB All over 1,284LF is an additional 321 LF. Is the additional 321 LF for the possibility for additional relief wells? Or for the possibility that through the split spoon process additional footage may be added to each relief well?

A4: From a geotechnical standpoint, additional footage may be needed based on the sampling/testing results, but not additional relief wells.

SECTION 33 26 00.00 12

Page 19, paragraph 2.3. Delete the table in its entirety and substitute the following therefore:

“2.3 FILTER PACK

Material for the filter pack around the solid pipes and screens shall be a dry processed sand composed of hard, tough, and durable particles free from adherent coating. The filter pack shall not be crushed stone. The filter pack material shall contain no detrimental quantities of organic matter nor soft, friable, thin, or elongated particles in accordance with the quality requirements in ASTM C 33/C 33M, Table 1 and Table 3, Class 5S. Material sieve analysis testing shall be per ASTM C136/C136M. Test sieves shall be in accordance with ASTM E 11, Table 1.

The individual grading curves within the limits shown shall not exhibit abrupt changes in slope denoting skip grading or scalping of certain sizes. The filter pack shall meet the following gradation requirements:

RELIEF WELLS: MW-1 Thru MW-15

U.S. STANDARD SIEVE

NO.

MAX. PERCENT BY

WEIGHT PASSING LINE

MIN. PERCENT BY

WEIGHT PASSING LINE

No. 18 91.3 - No. 20 77.3 95.8 No. 25 51.9 81.9 No. 30 27.2 60.0 No. 35 - 32.9 No. 40 - 14.4 No. 45 - 1.2

DRAWINGS

SHEET IDENTIFICATION No. G-04. Delete this drawing in its entirety and substitute the attached revised drawing SHEET IDENTIFICATION No. G-04.

NEW ORLEANS DISTRICT

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