W912WJ21B0017 Amendment 0008.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 above referenced solicitation is hereby amended to extend the date for the bid opening and to address Requests for Information. All other terms and conditions remain unchanged.

1. CONTRACT ID CODE PAGE OF PAGES

1 4

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

16C. DATE SIGNED

BY 13-Aug-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 W912WJ21B0017

X 9B. DATED (SEE ITEM 11)

16-Jul-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 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

13-Aug-2021

CODE

U S ARMY ENGR DISTRICT, NEW ENGLAND

696 VIRGINIA RD

CONCORD MA 01742-2751

W912WJ 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W912WJ21B0017

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:

AMEND 0008

RFIs

1. Is there information on flow rates from Outfall-008? If work is going to take place in the dry what pumping capacity would be required to manage flow 1. from the Outfall?

Response: Flow rates are not available due to the influence of the tidal cycles and existing conditions between the OF-008 and Airport drainage ditch, which readily exchange water under current conditions. Stormwater input from the site is from roughly half of the Southern Parking lot. Groundwater input is unknown.

2. If work is to be done in the wet, how does the water within the work area have to be managed during and after dredging?

Response: During construction, water within the drainage ditch that has suspended solids due to excavation activities would not be permitted to leave the ditch by any means without processing at the temporary water treatment plant. The contractor will be responsible for maintaining the water level within the ditch through pumping/treating/discharging or providing sufficient settlement time prior to provide overflow control of water into the marine basin system. Prior to any excavation or other activities that disturb the sediment, water may be pumped to the existing stormwater systems or directly discharged without WTP processing in accordance with the Contractor’s approved plan to initiate control water levels within active work areas. After excavation/dredging, the water is subject to the same discharge limitations until suspended solids are sufficiently settled.

3. Is there USACE – approved facilities for regeneration that can be provided?

Response: None will be provided.

4. Has any treatability studies been performed on the sediments for stabilization.

Response: No, none for the OF-08 sediments.

5. Please confirm that wipe samples will be used for asphalt pavement, concrete slabs, large boulders, and structures encountered within the excavation limits and are not intended for decontamination sampling of trucks loaded for disposal. Is there a quantification for this? If not, how are we supposed to estimate a cost associated within our bid schedule?

Response: Yes, PCB wipe samples or destructive samples are required. No quantification has been developed. It is the responsibility of the Contractor to make reasonable assumptions regarding the number of samples.

6. Please reference Specification Section 01 22 00 Par 1.3.4 and advise if Water Treatment System sediment trucking and disposal will be paid under Bid Item # 4AA or 4AB.

Response: Sediment generated from the water treatment plant shall be handled and processed along with sediment from the outfall excavation/dredging within sediment management bins (subject to the SMB sampling requirements). Composite sample results that trigger offsite disposal would fall under Bid item numbers #4AA and 4AB.

7. Please reference Specification Section 01 30 00 Par 1.8.1 and confirm that the Government desires to engage in Partnering sessions as specified. If so, please provide a list of acceptable Partnering Facilitators.

Response: Yes, the requirement remains as specified. USACE does not have a list of facilitators.

8. Does the CT Impacted Soil Tax of 6.35% apply to the T&D of material going offsite? Or will this transaction be Tax Exempt?

Response: It is the contractor’s responsibility to determine tax liability. If applicable, the contractor may provide an applicable and completed tax exemption request form to the Government for review and signature.

9. Please reference Specification Section 31 00 00 Par. 3.4.2 advising that for excavations of Outfall 008 made in the dry will be limited to 200 LF of channel at a time. Please confirm that the 200 LF channel limit is not required for in the wet methods. Is the Government concerned with PCB suspended sediments migrating from the excavation heading to the completed channel sections?

Response: The purpose of the 200 LF excavation is to limit the amount of channel that needs to be dewatered at one time. This limits the amount of water generated from the dewatering so as not to overwhelm the water treatment plant capacity and to keep below the maximum allowable treatment plant discharge. This limit does not apply if the ditch is built in the wet.

10. Please reference Specification Section 31 00 00 Par 3.7.2.2 requiring placement of Filter Material in 12” lifts and smoothed out. Please consider removing this requirement to allow the entire thickness of this layer to be placed in one lift, as it will likely avoid the segregation and voids the Government is looking for.

Response: The requirement remains unchanged.

11. Please refer to the match line at the bottom of page CD104 which states-Matchline Sheet CD105. There is no drawing CD105 nor is one listed in the index. Please provide.

Response: This was a drawing error. There is no sheet CD105. Existing conditions of the outfall ditch are presented along with the required work shown on sheet C-101.

12. Will the Contractor be required to obtain local and state permitting in excess of the Stormwater Plan? Specifically, Local (i. Planning and Zoning Approvals; ii. Building permits; iii. Inland Wetlands and Coastal Management), State (i. Natural Diversity Database (NDDB) 2 year approval. Looks like this was obtained previously but will likely lapse before work begins.; ii. 401 Water Quality Certification) Response: The contractor is responsible for determining requirements for local and state permits. However, it is known that a traffic plan will need to be reviewed/approved by the town of Stratford.

13. For the In-The-Wet excavation of Outfall 008 the water must be maintained at or below Elev

5. Can waters above this elevation be direct discharged below the Tide Gate structure?

Response: During construction, water within the drainage ditch that has suspended solids due to excavation activities would not be permitted to leave the ditch by any means without processing at the temporary water treatment plant. The contractor will be responsible for maintaining the water level within the ditch through pumping/treating/discharging or providing sufficient settlement time prior to provide overflow control of water into the marine basin system. Prior to any excavation or other activities that disturb the sediment, water may be pumped to the existing stormwater systems or directly discharged without WTP processing in accordance with the Contractor’s approved plan to initially control water levels within active work areas. After excavation/dredging, the water is subject to the same discharge limitations until suspended solids are sufficiently settled.

14. What happens with Debris that is encountered during the removal? How is this material managed? Paid for? There is large pieces of concrete and mangled rebar present in the excavation area. Can a line item be added for managing the debris?

Response: Assume no solid materials to be tested. Process material in the sediment managements bins to the maximum extent possible. If solids are encountered during construction that require testing, request for equitable adjustments for the testing can be made on an as-needed basis.

15. Can water from Outfall 008 be discharged into the Marine Basin?

Response: See response to Amendment 0008, RFI #13.

16. Is there a drawing available that provides the existing sediment elevations/contours?

Response: Existing conditions are presented within drawing sheet C-101. Existing elevations are also presented in the cross sections drawing sheets. C-301 through C-304.

SECTION A - SOLICITATION/CONTRACT FORM

The required response date/time has changed from 18-Aug-2021 01:00 PM to 24-Aug-2021 01:00 PM.

(End of Summary of Changes)