15_6923G522R1167A0002.pdf

Offers 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 or (c) By separate letter or electronic communication 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 letter or electronic communication, provided each letter or electronic communication makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

E. IMPORTANT: Contractor is not is required to sign this document and return copies to the issuing office.

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

1. CONTRACT ID CODE

2. AMENDMENT/MODIFICATION NUMBER 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE REQUISITION NUMBER 5. PROJECT NUMBER (If applicable)

7. ADMINISTERED BY (If other than Item 6) CODE

STANDARD FORM 30 (REV. 11/2016)

Prescribed by GSA FAR (48 CFR) 53.243

FACILITY CODE

9A. AMENDMENT OF SOLICITATION NUMBER

9B. DATED (SEE ITEM 11)

10A. MODIFICATION OF CONTRACT/ORDER NUMBER

10B. DATED (SEE ITEM 13)

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offers is extended. is not extended.

12. ACCOUNTING AND APPROPRIATION DATA (If required) copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS.

IT MODIFIES THE CONTRACT/ORDER NUMBER AS DESCRIBED IN ITEM 14.

CHECK ONE A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE CONTRACT ORDER

NUMBER IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation data, 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)

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.

15C. DATE SIGNED

15A. NAME AND TITLE OF SIGNER (Type or print)

16C. DATE SIGNED

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

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

PAGE OF PAGES

6. ISSUED BY CODE

8. NAME AND ADDRESS OF CONTRACTOR (Number, street, county, State and ZIP Code) (X)

CODE

15B. CONTRACTOR/OFFEROR

(Signature of person authorized to sign)

16B. UNITED STATES OF AMERICA

(Signature of Contracting Officer)

Previous edition unusable

6923G522R1167A0002

The purpose of this amendment is to:

1. Incorporate revised Section B as specified herein.

2. Incorporate RFI(s) and responses as specified herein.

3. The proposal due date remains unchanged.

4. The POC for this action is Chora Young, email: purchasing@dot.gov.

(SEE Continuation page)

SLS Contracting Office 180 Andrews Street Massena, NY 13662, US

Same as item 6

6923G522R1167

10/25/2022

10/04/2022

PART I

Revised

SECTION B

SUPPLIES OR SERVICES AND PRICES/COSTS

ITEM UNIT

NO DESCRIPTION QUANTITY UNIT PRICE

Bid Schedule

Furnish all plant, labor, equipment, and materials and perform all work for:

0001 Mobilization and demobilization of all equipment and materials to the Eisenhower Lock diffuser pit site. This includes all fixed costs to do the work.

1 Lump sum

Total -

0002 Demolition of deteriorated concrete, including disposal at GLS designated spoil area. This item includes installation of steel reinforcement and preparation of surfaces to allow installation of new concrete in accordance with the contract requirements.

35 Cubic yard

0003 Installation of new concrete at the Eisenhower Lock diffuser pit site, as indicated, and in accordance with the contract requirements.

40 Cubic yard

Optional

Install of new concrete at other locations as identified by the

COR.

5 Cubic yard

Total Price _ $ _______________

NOTE TO OFFEERORS:

1. Offerors must include bid prices for all of the Basic and Optional Bid Items to be considered responsive. Bids will be evaluated by adding all Basic and Optional Bid Items to be considered responsive.

2. The Corporation intends to award the Basic Bid Items at the time of award. The Optional Bid Items may be awarded during project construction on a need only basis if funding is available.

3. The offeror shall provide a detailed cost breakdown to support each line item; labor, material and overhead.

4. Volumes are estimated quantities. Payment will only be for actual cubic yards of material installed.

5. The Corporation reserves the right to make award for only the Basic Bid Items, or for the Basic Bid Items and any combination of the Optional Bid Items, dependent upon the availability of funds.

Signature __________________________________

Date _____________________

End of Section B

RFI Responses

6923G522R1167 – Eisenhower Shotcrete

No. Question Answer(s)

1. Section C.6 of the Description/Specification/ Work Statement describe the type of shotcrete to be used is the “Dry” method whereas the water is introduced at the nozzle versus a “Wet” mix which would be delivered in a concrete truck or mixed in a volumetric mixer. Your specification also requires an Air Content between 6% - 9% which is nearly impossible in “Dry” mix applications. We are also concerned about the freeze thaw impacts to a dry mix shotcrete which is not up to the standard as modern “Wet” shotcrete regarding freeze thaw primarily due the inability to control the air percentage. The American Shotcrete Association (ASA) and several ACI publications describe these disadvantages of “Dry” mix shotcrete. We highly recommend for many reasons that “Wet” mix Shotcrete be allowed for the project as an acceptable method. We have no problem with keeping both options available for the bidders but for the application you are using shotcrete and the heavy freeze thaw environment we absolutely recommend “Wet” mix.

GLS has specified these requirements and has seen satisfactory results.

Therefore, GLS prefers to keep the requirements as is.

Refer to USACE Publication EM1110 Table 2-1 for verification regarding the very poor performance for freeze thaw and lack of ability to control air content.

2. Per the specifications all Nozzleman for the Shotcrete must be certified under ACI

CP-660 which is typical on major dam and water resource projects such as this project. We recommend that you also add the requirement for the certification to include the Overhead Position as that position is a special certification and based on some observations of the photos included in the RFP there may be some areas that need some overhead placement of shotcrete.

Recommendation is noted, but GLS will keep the specification as is.

3 Please confirm whether proposals can be submitted via email only (as stated on SAM.gov) or if 1 original & 1 copy must be sent to the Massena office (as stated in Item 13 of the solicitation).

Proposals shall be submitted via email only to: purchasing@dot.gov

4 Will the SLSDC supply a 480 volt power supply for large dewatering pumps should there be unexpected flooding in the diffuser pit?

Section C.3 has descriptive language about the load centers GLS can provide. The Contractor can power additional pumps with theses load centers. There is no limitation as to what equipment is allowed to be powered by these load centers.

However, as noted in this section, there are some limitations that need to be considered by offerors.

The GLS dewatering pit pumps that GLS uses to dewater the lock that are referenced in Section C.4 do have a backup power supply.

5 Will the Corporation seal the stop logs to prevent water infiltration through the stop logs?

GLS will attempt to use supplemental means and methods to improve the sealing on the stop logs to reduce infiltration past them. There are no guarantees on effectiveness, and there has been variations on the effectiveness observed in years past.

6 Using crane access to the diffuser pit for manpower will make access impossible on windy days. Will the Corporation provide temporary construction stairs to access the construction area as they have done in the past?

GLS does not intend to install or maintain access stairs to the diffuser pit area.

7 It is my understanding that there will be an incumbent contractor completing work on the diffusers while work on the diffuser pit walls is ongoing. Does the Corporation expect timing and construction delays or safety issues arising?

Kubricky Construction Corp.

(Kubricky), that has a limited amount of work to complete on the eastern most diffuser. Section C.15 discusses that there may be work by GLS or other contractors in the work area.

Without knowing the means, methods or approach of the awarded contractor for this contract, or for Kubricky to do their work, it would be impossible to speculate if

Kubricky’s work will affect the contractor awarded this work.

It is GLS’s expectation that all contractors and GLS personnel coordinate their work such that it limits the impact on others’ ability to perform their work.

8 Who is the incumbent contractor on the diffuser installation project?

See response to #7

9 Section 1.6 b under FAR 52.236-28 - Preparation of Proposals -- Construction (Oct 1997) states “The offeror shall submit a completed copy of FAR 52.212-3, Representations and Certifications – Commercial Items.”

Can you tell me how we can print that from our online registration in Sam.gov?

The offeror can obtain a copy via SAM.gov by logging into your SAM profile.

10. Is this bid email only? The project documents are a little contradicting. See response to #3

11. Is this going to be a public opening? No

12. When will the bid results be shared with the bidding contractors? The Government shall make appropriate notices during the award announcement.

13. This bid includes 35 yards of Demo and 40 Yards of Placement. How were these quantities determined? The project last year in the Eisenhower Teardrops had 50 Yards of Placement in the Bid Last year and we ended up only doing 15 Yards.

This decrease in quantity resulted in a great loss in potential profit.

GLS estimated these volumes based on measuring the surface areas of concrete visibly deteriorated and/or unsound (determined by sounding the concrete surface). It was not practical or feasible to determine the depths of unsound concrete that would need to be removed. Therefore, the estimation has limitations and offerors are encouraged to give accurate pricing for each line item, including the volumetric unit prices, especially since the volumetric estimated quantities cannot be guaranteed.

Please note in Section B there is note #3 in the “Note to Offerors” that requires a detailed cost breakdown for each line item.

14. Was an inspection done on these walls last year via sounding? GLS performed sounding on walls in the diffuser pit recess during the previous winter.

15. What is the average depth of repair? It was not practical or feasible to determine the depths of unsound concrete that would need to be removed for specific repairs. See the response to #13 above.

16. Will water be diverted at the upstream stop logs to make it easier to deal with at the diffuser?

Water that infiltrates past the upstream stoplogs will ultimately drain to the lock chamber which then drains to a culvert that goes directly to the dewatering pit. Therefore, diverting this water to one filling/emptying culvert or the other will not affect the diffusers.

Of importance is how much water infiltrates past the stoplogs. The amount of infiltration will affect GLS’s dewatering pumps’ workload which will affect their ability to maintain the water levels in the diffuser pit area. See the response to #5.

17. What is the extent of “Other Locations” in Optional Item # 4. Any work outside the diffuser area would require extensive mobilization. Or is this item ment to pay for additional quantity in the diffuser area?

This is intended for concrete installation that is in areas not requiring extensive additional mobilization that would be in areas not indicated by scope description and photos. For example this could be concrete in the areas of the upstream three diffusers (Nos.1-3).