W912EK21B0011 Amendment 0001.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

The purpose of this amendment is to modify SECTION 35 31 19 of the specifications. See enclosed for further information.

1. CONTRACT ID CODE PAGE OF PAGES

J 1 2

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

16C. DATE SIGNED

BY 05-Mar-2021

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 W912EK21B0011

X 9B. DATED (SEE ITEM 11)

11-Feb-2021

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

05-Mar-2021

CODE

CONTRACTING DIVISION

US ARMY CORPS OF ENGINEERS 1500 ROCK ISLAND D

ROCK ISLAND IL 61201

W912EK 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W912EK21B0011

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

The following items are applicable to this modification:

AMENDMENT 0001

The following modifications are made to SECTION 35 31 19.

SECTION 35 31 19

a. PAGE SECTION 35 31 19 Page 4. Delete page SECTION 35 31 19 Page 4, in its entirety, and substitute revised page SECTION 35 31 19 Page 4.

b. ATTACHMENTS A AND B, SECTION 35 31 19. Delete pages ATTACHMENTS A AND B, in their entirety, and substitute revised pages ATTACHMENTS A AND B.

SOLICITATION NO.: W912EK21B0011

1.5.2 Bedding Stone

Neatline tolerance design thickness as shown, 0-inches to plus 2-inches.

1.6 QUALITY CONTROL

Gradation of riprap to ensure compliance with the requirements of paragraph "RIPRAP PLACEMENT," determine the weight of pieces of each gradation of riprap as an approximate percent of the total weight before commencing placement of the riprap.

PART 2 PRODUCTS

2.1 BEDDING STONE

Provide in accordance with ILDOT, Grade CA5.

2.2 RIPRAP

a. Provide riprap produced from sources in accordance with paragraph "RIPRAP SOURCES." Designate in writing only one such source or one combination of such sources from which the riprap is proposed for use prior to delivery at the site.

b. Listing of a riprap source is not to be construed as approval of all material from that source. The Government reserves the right to reject materials from certain localized areas, zones, strata, or ledges, when such materials are unsuitable for riprap as determined by the Contracting Officer.

c. Provide durable riprap and of a suitable quality to ensure permanence in the structure and in the climate in which it is to be used.

Provide riprap free from cracks, seams, and other defects that would tend to increase unduly its deterioration from natural causes.

The inclusion of objectionable quantities of dirt, impervious and pervious materials, and rock fines, as determined by the Contracting Officer, is prohibited.

d. For the bankline protection, provide riprap in accordance with ILDOT, Grade RR4.

e. Rock quarried after 15 September and prior to 15 April and stockpiled at the quarry will not be accepted for gradation until after 15 April.

This requirement will be deleted for rock of satisfactory performance as determined by the Contracting Officer.

PART 3 EXECUTION

3.1 BASE PREPARATION

Base preparation may begin after the herbicidal treatment period, when vegetation has dried and area approved by the Contracting Officer. Scarify soil and dead vegetation to a depth of 12 inches and thoroughly mix. Break up clumps of dead vegetation to meet base preparation requirements. After scarification, use a D6 track dozer or equipment with a similar ground contact pressure to compact the scarified area with at least 4 passes of the compaction equipment. Overlap passes of the tracks to assure a

SECTION 35 31 19 Page 4

AMEND 0001

1 MARCH 2021

RIPRAP GRADATION TALLY CHART

Use to record individual stone weights

Total Weight of Gradation Test Sample1 in pounds: ___________ = “X”1

Column ► A B C D E F G2

Weight Ranges ► < 1 pounds 1 - 14 pounds 15 - 39 pounds

40 - 79 pounds

80 - 109 pounds

110 - 150 pounds

150 + pounds

Record Individual

Stone Weights

Total of Individual Weights in Column ► ______lb ______lb ______lb ______lb ______lb ______lb ______lb

Total Cumulative Weight Finer Than Next

Weight Range ►

(A)

______lb

(A+B)

______lb

(A+B+C)

______lb

(A+...+D)

______lb

(A+...+E)

______lb

(A+...+F)

______lb

(A+...+G)

______lb

Percent Finer By Weight

(Total Cumulative Weight of each Column, Divided by Total Weight of Sample “X”3)

(A) X

(A+B) X

(A+B+C) X

(A+...+D) X

(A+...+E) X

(A+...+F) X

(A+...+G) X

1. - Recommended test sample size is approximately 40 times the top-size weight ≈ 6000 pounds.

2. - 100% of the sample will be finer by weight than the heaviest individual stone weight plus one pound. Heaviest weight plus one will be plotted on the 100% Finer by Weight line of ENG Form 4055 - RIPRAP GRADATION CURVES. The totaled weights of all columns A - G should equal the initial test sample weight “X”.

3. - The Cumulative Percent Finer By Weight number for each column is plotted on ENG Form 4055 - RIPRAP GRADATION CURVES chart, on the weight increment line of the next column's weight range low number, i.e. column B cumulative percent would be plotted on the 15 pound line of the 4055 chart.

ATTACHMENT A TO SECTION 35 31 19

AMEND 0001

RR - 4

30-70 % Finer Than

ILDOT APR 2016

100 % Passing #

0-16 % Finer Than

ENG Form 4055

CONTRACT __________________________________

PROJECT ___________________________________

DATE ______________________________________

2.2

2.4

2.6

2.8

3.2

2.2

2.4

2.6

2.8

3.2

ASSUMING A SHAPE MIDWAY BETWEEN A SPHERE AND A CUBE

SIZE OF STONES IN INCHES

SPE

C

IFIC

G

R A

V

IT

Y

SPE

C

IFIC

G

R A

V

IT

Y

100 0

0.1

110100

PE

R

C E

N T

FIN

E

R B

Y W

E

IG

H T

PE

R

C E

N T

C O

A R

SE

R

B Y

W E

IG

H

T

WEIGHT OF STONES IN POUNDS

RIPRAP GRADATION CURVES

3848 4

40 34 32 3 2 26 24 22 20 1 17 16 11 13 1 11 10 8 7 6 5 4 3

ATTACHMENT B TO SECTION 35 31 19

AMEND 0001