Amendment Levee Rehab W912DQ20B10540001.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 specify the material for the smooth steel pipe.

1. CONTRACT ID CODE PAGE OF PAGES

J 1 7

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

16C. DATE SIGNED

BY 08-Jan-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 W912DQ20B1054

X 9B. DATED (SEE ITEM 11)

11-Dec-2020

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

07-Jan-2021

CODE

USACE, KANSAS CITY

FEDERAL BLDG CT-C 601 E 12TH ST RM 647

KANSAS CITY MO 64106-2896

W912DQ 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W912DQ20B1054

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

SECTION 01 00 00 - GENERAL REQUIREMENTS

The following have been added by full text:

The SOLICITATION is amended as follows:

NOTE: Deleted text is shown with strikethrough. Added text is shown with underline.

1. SPECIFICATIONS:

a. Section 35 41 00 Paragraph No 3.12.1 18-Inch Drainage Structure Repair Station 49+38

During prosecution of work the contractor shall maintain the capability to provide flood control protection within a minimum of 24-hours' notice, at a level of protection that is currently being afforded by the levee system.

Repairs at stated location is shown on Site Map B-1 and consists of excavation and complete removal of the existing 18-inch CMP and the installation of an 18-inch smooth wall steel pipe (SSP), conforming to A252 Grade 3 material standard. All removed 18-inch CMP and appurtenances shall be returned to Sponsor. (500 CY Excavation, 500 CY Fill, 80' of 18" SSP (0.375" wall thickness), one anti-seep collar, one F-25sb Model Waterman medium duty flap gate, or approved equal, & 0.1 AC seeding/mulching)

Pipe Installation: The contractor shall excavate and remove all existing 18-inch CMP and return to the Sponsor. Coordination with the Sponsor shall be conducted through the COR. The contractor shall furnish and install the 18-inch SSP at grade placement per COR direction. The contractor shall be required to undertake the necessary measures to ensure a proper placement area for SSP.

This includes possible foundation de-watering, over excavation with backfill of impervious material and potential use of flowable fill to ensure a sound placement area for SSP. All pipe sections shall be welded joints utilizing a 3-pass welding seam (at pipe connecting ends & 1 overlapping pass from centerline of joint weld on each side). All welded joint sections shall be connected (banded) with a 6-inch wide by 24-inch long flat metal strip evenly spaced welded on either side of welded joint (12" on each side of welded joint). A total of four (4) connecting strips shall be welded and symmetrically spaced around pipe joint (metal strip on top, bottom & each side of SSP). Flat metal strip thickness shall be same thickness as steel pipe. The contractor shall conduct necessary inlet and outlet drainage ditch excavation to ensure positive drainage into, through and exiting installed pipe. The contractor shall install one anti-seep collar on SSP (see Drawing C-3).

Should additional borrow be necessary to complete repairs it shall be obtained from cross-hatched area displayed as Borrow Area 1 and generally positioned as shown on Site Map B-3, with limits identified and/or flagged by COR. Borrow shall be removed in maximum 6-inch cuts within limits of designated area.

b. Section 35 41 00 Paragraph No 3.12.2 24-Inch Drainage Structure Repair Station 65+70 afforded by the levee system.

Repairs at stated location is shown on Site Map B-1 and consists of excavation and complete removal of the existing 24-inch CMP and the installation of a 24-inch smooth wall steel pipe (SSP), conforming to A252 Grade 3 material standard. All removed 24-inch CMP and appurtenances shall be returned to Sponsor. (500 CY Excavation, 500 CY Fill, 100' of 24" SSP (0.375" wall thickness), one anti-seep collar, one F-25sb Model Waterman medium duty flap gate, or approved equal, & 0.1 AC Seeding/Mulching)

Pipe Installation: The contractor shall excavate and remove all existing 24-inch CMP and return to the Sponsor. Coordination with the Sponsor shall be conducted through the COR. The contractor shall furnish and install the 24-inch SSP at grade placement per COR direction. The contractor shall be required undertake the necessary measures to ensure a proper placement area for SSP.

This includes possible foundation de-watering, over excavation with backfill of impervious material and potential use of flowable fill to ensure a sound placement area for SSP. All pipe sections shall be welded joints utilizing a 3-pass welding seam (at pipe connecting ends & 1 overlapping pass from centerline of joint weld on each side). All welded joint sections shall be connected (banded) with a 6-inch wide by 24-inch long flat metal strip evenly spaced welded on either side of welded joint (12" on each side of welded joint). A total of four (4) connecting strips shall be welded and symmetrically spaced around pipe joint (metal strip on top, bottom & each side of SSP). Flat metal strip thickness shall be same thickness as steel pipe. The contractor shall conduct necessary inlet and outlet drainage ditch excavation to ensure positive drainage into, through and exiting installed pipe. The contractor shall install one anti-seep collar on SSP (see Drawing C-3).

Should additional borrow be necessary to complete repairs it shall be obtained from cross-hatched area displayed as Borrow Area 2 and generally positioned as shown on Site Map B-1, with limits identified and/or flagged by COR. Borrow shall be removed in maximum 6-inch cuts along either side of the existing outlet drainage ditch slopes commencing at the western most limits (at MO River high bank line) progressing east towards drainage structure.

c. Section 35 41 00 Paragraph No 3.12.4 48-Inch Drainage Structure Repair Station 176+20 afforded by the levee system.

Repairs at stated location is shown on Site Map B-3 and consists of excavation and complete removal of the existing 48-inch CMP and the installation of a 48-inch smooth wall steel pipe (SSP), conforming to A252 Grade 3 material standard. All removed 48-inch CMP and appurtenances shall be returned to Sponsor. (2,000 CY Excavation, 2,000 CY Fill, 120' of 48" SSP (0.375" wall thickness), one anti-seep collar, one F-25sb Model Waterman medium duty flap gate, or approved equal, & 0.2 AC Seeding/Mulching)

Pipe Installation: The contractor shall excavate and remove all existing 48-inch CMP and return to the Sponsor. Coordination with the Sponsor shall be conducted through the COR. The contractor shall furnish and install the 48-inch SSP at grade placement per COR direction. The contractor shall be required undertake the necessary measures to ensure a proper placement area for SSP.

This includes possible foundation de-watering, over excavation with backfill of impervious material and potential use of flowable fill to ensure a sound placement area for SSP. All pipe sections shall be welded joints utilizing a 3-pass welding seam (at pipe connecting ends & 1 overlapping pass from centerline of joint weld on each side). All welded joint sections shall be connected (banded) by a 24-inch wide flat metal collar, evenly spaced welded on either side of welded joint (12" on each side of welded joint). Flat metal strip thickness shall be same thickness as steel pipe. Welded connecting band shall be shaped to conform to pipe and provide a continuous connection around pipe. Connecting band can be "pieced-welded" together to obtain a continuous band; however, no more than 4 pieces can be utilized. The contractor shall conduct necessary inlet and outlet drainage ditch excavation to ensure positive drainage into, through and exiting installed pipe. The contractor shall install one anti-seep collar on SSP (see Drawing C-3).

Borrow for repairs shall be obtained and removed from same borrow source as described and utilized for repairs at stations 142+60 to 144+65 and 146+05 to 147+90. See Site Map B-3.

d. Section 35 41 00 Paragraph No 3.13.2 Landward Levee Setback Repair Station 68+40 to 74+10

Repair consists of constructing an approximate 625-linear-feet long new landward levee setback to a 12-feet wide crown width, with 1' vertical on 3' horizontal side slopes. The government shall provide initial centerline staking of the new landward levee setback alignment. The contractor will be responsible for maintaining and/or replacing centerline staking if damaged. Repair elevations shall be based from hub elevation 100.0 near levee station 67+00. The base grade of landward levee setback is elevation 100.0 throughout entire length of setback (i.e. sta. 0+00 to 6+25). The height of levee embankment shall be increased by 5% tapering to no increase in height at the toe of the embankment. The 5% height requirement cannot be exceeded by greater than two tenths of a foot (0.20'). Within setback reach the contractor shall furnish and install 100-linear feet of 18-inch diameter SSP and 70-linear feet of 16-inch diameter SSP. (both with 0.375" wall thickness and conforming to A252 Grade 3 material standard), one anti-seep collar for each pipe and one F- 25sb Model Waterman medium duty 18-inch flap gate, and one F-25sb Model Waterman medium duty 16-inch flap gate, or approved equals. (8,400 CY Fill, 100' of 18" SSP (0.375" wall thickness), 70' of 16" SSP (0.375" wall thickness), two anti-seep collars, one 18" F-25sb Model Waterman flap gate, one 16" F-25 Model Waterman flap gate, & 1.2 AC Seeding/Mulching)

Prior to construction of landward levee setback, the contractor shall excavate and remove an existing pipe within crossing and return to Sponsor. Consult COR for exact location of pipe.

Random borrow for repairs consists of stock piled sand deposition materials and are cross-hatched areas generally positioned and are as shown on Site Map B-13. Some minor clearing/grubbing of timber and removal of heavy herbaceous vegetation within borrow area is to be expected.

Removal operations are to commence on the western most stock pile (approx. 1.0 AC), at the western most end of stock pile. Stock piled materials to be removed down to the surrounding agricultural lands found at perimeter limits of the landward side of stock pile and removed so as to not retain/pond water. Borrow operations not to impact existing riverward levee system. In the transport of random borrow materials the contractor may utilize one of the travel haul routes as shown on Site Map B-13 (see additional requirements below). See Drawing C-2 for levee random fill zone. River Road Bridge Crossing Route: The contractor shall comply, and not exceed, the Platte County bridge load limits when hauling materials to repair locations.

Sugar Creek Crossing Route: The contractor shall comply with Section 404 Clean Water Act Nationwide 13 requirements for Minor Road Crossing Fills in the construction/utilization of a crossing within Sugar Creek when hauling materials to repair locations. Upon completion of hauling operations the contractor shall restore crossing location per same requirements. All necessary costs associated with crossing construction/removal to be borne by the contractor.

Impervious borrow is cross-hatched area positioned riverward the landward levee setback and is as shown on Site Map B-11. Impervious borrow consists of compete removal of remaining riverward segments of existing levee from approximate levee station 68+40 to 70+30 and 72+80 to 74+10.

Existing levee segments shall be utilized and exhausted first, prior to borrow excavation within remaining designated borrow area. Additional impervious borrow shall be obtained and commences 20-feet from the landward levee setback riverside toe line, on a 1' vertical on 3' horizontal slope, with material removed in an even fashion over entire designated area, with positive drainage away from levee and draining to scour feature. Should sufficient borrow not be available to complete repairs, remaining borrow is to be obtained from impervious borrow areas utilized/described for other repairs and is as shown on Site Maps B-10 or B-12. See Drawing C-2 for levee impervious fill zone.

Pipe Installation: The contractor shall install required 18-inch diameter and 16-inch diameter SSP's at location and grade placement per COR direction. The contractor shall be required undertake the necessary measures to ensure a proper placement area for SSP. This includes possible foundation de-watering, over excavation with backfill of impervious material and potential use of flowable fill to ensure a sound placement area for SSP's. All pipe sections shall be welded joints utilizing a 3-pass welding seam (i.e. at pipe connecting ends & 1 overlapping pass from centerline of joint weld on each side). All welded joint sections shall be connected (banded) with a 6-inch wide by 24-inch long flat metal strip evenly spaced welded on either side of welded joint (12" on each side of welded joint). A total of four (4) connecting strips shall be welded and symmetrically spaced around pipe joint (i.e. metal strip on top, bottom & each side of SSP). Flat metal strip thickness shall be same thickness as steel pipe. The contractor shall excavate an outlet ditch from installed end section of SSP's, with positive drainage into Sugar Creek. Outlet ditch configuration shall have a 4' wide flat bottom, with 1' vertical on 2' horizontal side slopes. Within outlet ditch for 18-inch SSP the contractor shall excavate an approximate 6' deep trench, 10' long (as measured from SSP outlet end), and 10' wide (5' either side of ditch centerline), and place approximately 40 tons of quarry-run-stone (Sponsor furnished & stock piled near River Road bridge crossing - approx. sta. 88+81) within excavated trench. Excavated materials can be utilized for impervious borrow fill. The contractor shall also install one anti-seep collar on each SSP, (see Drawing C-3).

e. Section 35 41 00 Paragraph No 3.13.6 Landward Levee Setback Repair Station 89+00 to 106+00

Repair consists of constructing an approximate 1,700-linear-feet long new landward levee setback to a 14-feet wide crown width, with 1' vertical on 3' horizontal side slopes. The government shall provide initial centerline staking of the new landward levee setback alignment, which generally coincides with centerline of an existing private access road to the MO River. The contractor will be responsible for maintaining and/or replacing centerline staking if damaged. Repair elevations shall be based from hub elevation 100.0 near levee station 88+60. The base grade of landward levee setback is elevation 100.0 throughout entire length of setback (sta. 0+00 to 17+00). The height of levee embankment shall be increased by 5% tapering to no increase in height at the toe of the embankment. The 5% height requirement cannot be exceeded by greater than two tenths of a foot (0.20'). Within setback reach the contractor shall furnish and install 80-linear feet of 18-inch diameter SSP (0.375" wall thickness and conforming to A252 Grade 3 material standard), one anti-seep collar and one F-25sb Model Waterman medium duty 18-inch flap gate, or approved equal. (14,300 CY Fill, 80' of 18" SSP (0.375" wall thickness), one anti-seep collar, one 18" F- 25sb Model Waterman flap gate, & 1.8 AC Seeding/Mulching)

Prior to construction of landward levee setback, the contractor shall excavate and remove an existing pipe located within private access road and return to Sponsor. Consult COR for exact location of pipe.

Random borrow for repairs consists of stock piled sand deposition materials and are cross-hatched areas generally positioned as shown on Site Map B-13. Some minor clearing/grubbing of timber and removal of heavy herbaceous vegetation within borrow areas is to be expected. Removal operations are to commence on the western most stock pile (approx. 1.0 AC), at the western most end of stock pile and proceed east. Stock piled materials to be removed down to the surrounding agricultural lands found at perimeter limits of the landward side of stock pile and removed so as to not retain/pond water. Borrow operations not to impact existing riverward levee system. In the transport of random borrow materials the contractor may utilize one of the travel haul routes as shown on Site Map B-13 (see additional requirements below). See Drawing C-2 for levee random fill zone.

River Road Bridge Crossing Route: The contractor shall comply, and not exceed, the Platte County bridge load limits when hauling materials to repair locations.

Sugar Creek Crossing Route: The contractor shall comply with Section 404 Clean Water Act Nationwide 13 requirements for Minor Road Crossing Fills in the construction/utilization of a crossing within Sugar Creek when hauling materials to repair locations. Upon completion of hauling operations the contractor shall restore crossing location per same requirements. All necessary costs associated with crossing construction/removal to be borne by the contractor.

Impervious borrow "A" is cross-hatched area positioned riverward the landward levee setback and is as shown on Site Map B-10. Impervious borrow consists of compete removal of remaining riverward segments of existing levee from approximate levee station 89+00 to 94+55 and 97+55 to approximate Rushville Sugar-Lake Levee Association levee station 533+00. Existing levee segments shall be utilized and exhausted first prior to borrow excavation within remaining designated borrow area. Additional impervious borrow shall be obtained and commences 20-feet from the landward levee setback riverside toe line, on a 1' vertical on 3' horizontal slope, with material removed in an even fashion over entire designated area, with positive drainage away from levee and draining to scour feature. Should sufficient borrow not be available to complete repairs, remaining borrow is to be first obtained from impervious borrow areas and are as shown on Site Maps B-11 and B-12.

Should additional impervious borrow be necessary it shall be obtained from Impervious Borrow "B" and is cross-hatched area positioned landward the landward levee setback and is generally as shown on Site Map B-10. COR to identify/flag limits of designated borrow area. Borrow shall be obtained evenly over entire area, in 6-inch layer cuts, to a maximum cut depth of 1-foot. All perimeter slopes of borrow area shall be 1' vertical on 3' horizontal. See Drawing C-2 for levee impervious fill zone.

Pipe Installation: The contractor shall install required 18-inch diameter SSP at location and grade placement per COR direction. The contractor shall be required undertake the necessary measures to ensure a proper placement area for SSP. This includes possible foundation de-watering, over excavation with backfill of impervious material and potential use of flowable fill to ensure a sound placement area for SSP. All pipe sections shall be welded joints utilizing a 3-pass welding seam (i.e. at pipe connecting ends & 1 overlapping pass from centerline of joint weld on each side). All welded joint sections shall be connected (banded) with a 6-inch wide by 24-inch long flat metal strip evenly spaced welded on either side of welded joint (12" on each side of welded joint). A total of four (4) connecting strips shall be welded and symmetrically spaced around pipe joint (i.e.

metal strip on top, bottom & each side of SSP). Flat metal strip thickness shall be same thickness as steel pipe. The contractor shall excavate an outlet ditch from installed end section of SSP, with positive drainage into existing scour feature. Outlet ditch configuration shall have a 4' wide flat bottom, with 1' vertical on 2' horizontal side slopes.

2. DRAWINGS: No change.

3. Offerors are required to acknowledge receipt of this amendment on the Bidding Form in the space provided. Failure to acknowledge all amendments may cause rejection of the proposal.

4. All other terms and conditions remain unchanged and in full force.

(End of Summary of Changes)