140R6024R0007_0002_0002.pdf

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1

1. CONTRACT ID CODE

I

PAGE OF PAGES

1 I 14

2. AMENDMENT/MODIFICATION NO. 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE REQ. NO.

5. PROJECT NO. (If applicable)

6. ISSUED BY

06/28/2024 CODE R60 7. ADMINISTERED BY (If other than Item 6) CODE I

Bureau of Reclamation Missouri Basin Region

Regional Office

2021 4th Avenue North

Billings MT 59101

8. NAME AND ADDRESS OF CONTRACTOR (No .. street, county, State and ZIP Code)

9A. AMENDMENT OF SOLICITATION NO .

140R6024R0007

X

9B. DATED (SEE ITEM 11)

05/09/2024

10A. MODIFICATION OF CONTRACT/ORDER NO.

10B. DATED (SEE ITEM 13)

CODE FACILITY CODE

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 Dis extended. rais not extended.

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 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 electronic communication which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGEMENT 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 dale specified.

12. ACCOUNTING AND APPROPRIATION DATA (If required)

13. THIS ITEM ONLY APPLIES TO MODIFICATION OF CONTRACTS/ORDERS. IT MODIFIES THE CONTRACT/ORDER NO. 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 NO. IN ITEM 10A.

E. IMPORTANT:

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)

Contractor Dis not Dis 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.)

Angostura Dam Spillway Concrete Repair, Pick-Sloan Missouri Basin Program, South Dakota

Please see the following continuation pages for INFORMATIONAL PURPOSES ONLY.

Except as provided herein, all terms and conditions of the document referenced in Item 9 A or 1 0A, as heretofore changed, remains unchanged and in full force and effect .

15A. NAME AND TITLE OF SIGNER (Type or print) 16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

15B. CONTRACTOR/OFFEROR 15C. DATE SIGNED

(Signature of person authorized to sign)

Previous edition unusable

Darlene Dillon

16B. UNITED STATES OF AMERICA

(Signature of Contracting Officer)

16C. DATE SIGNED

STANDARD FORM 30 (REV. 11/2016)

Prescribed by GSA FAR (48 CFR) 53.243

Solicitation No. 140R6024R0007 Amendment No. 0002

1) Description of amendment details:

For informational purposes only, this amendment hereby provides the government’s responses to questions.

2) Acknowledgement:

See Block 11 above regarding acknowledgement by offerors to this amendment. The Government requires acknowledgement of this and all amendment(s). (Please See Block 19 of the Standard Form 1442, on the original solicitation, ACKNOWLEDGEMENT OF AMENDMENTS).

3) Receipt of Proposals:

The date for receipt of proposals remains July 26, 2024. The hour for receipt of proposals is 3:00 PM (Mountain Daylight Time-Denver).

4) Third Party:

If you have provided a copy of this solicitation to another company or person, please forward this amendment accordingly.

Angostura Dam Spillway Concrete Repair Solicitation No. 140R6024R0007/0001

1) Question:

See past performance section Factor 3. Can the general contractor use past performance project from key subcontractor to full fill this section?

Government Response:

Please see L.16, WBR 1452.215-81 Proposal Instructions – Bureau of Reclamation, Factor 3 Past Performance.

2) Question:

Can the contractor exclude the bidding of the temporary road, and price different avenues of access to the work area?

Government Response:

Please see L.16, WBR 1452.215-81(g) Proposal Instructions/Volume III, Price Proposal.

3) Question:

If intentions are to use other methods, will the contractor be required to build a temporary road?

Government Response:

Please see L.16, WBR 1452.215-81(g) Proposal Instructions/Volume III, Price Proposal.

4) Question:

Will the bulkhead need to be moved if the intentions are not to use the borrowed material?

Bulkhead (Stoplogs) will not need to be moved if enough borrow material is available in surrounding area of borrow site.

5) Question:

Can you provide product detail or data sheets on the existing patch material? This would be helpful in determining removal procedures.

Government Response: The Government cannot guarantee existing patch material products.

6) Question:

Can we use the gravel area at the top of the East training wall as a contractor laydown and storage area?

Government Response:

Per drawing 4564-600-6005 – There is access to this area for limited storage. Allowing full access for the Dam tender will take precedence over storage in this location.

7) Question:

Considering the specialized scopes and personnel this entails, we respectfully request a two-week extension on the due date to submit the most competitive proposal possible.

Government Response:

The government acknowledges this request and has extended the close for submission of proposals to July 26th, 2024, via Amendment No. 0001.

8) Question:

Per Sheet 60008 & 60009, the spillway profile is shown. A depth of 12’ +/- is called out at the point in the water. Is 12’ to be assumed minimum depth beyond the spillway? How far is 12’ depth in the water maintained? What is the maximum depth and where does this exist? Would contour lines and/or elevations be provided for the area of concrete and land below the water?

Per Drawing 454-D-101. The 12’+/- is above the dissipaters in the spillway stilling basin. The +/- is for the varying depths if releases are made.

9) Question:

Per specification 31 25 10, silt fence is called out. However, the drawings do not clearly refer to any silt fence. Please confirm the location of the silt fence intended.

Please refer to drawing 454-600-60005, for silt fence location.

10) Question:

CLIN 21 and 22 refer to emergency Demobilization and Remobilization. If emergency demobilization and remobilization were to occur, what is the time frame between the two? Should we anticipate demobilizing for x amount of weeks or anticipate work stopping and being restarted at the beginning of the next years construction window?

Refer to section 01 14 20 Dam and Reservoir Operations and section 52 20 00 Record of Operations - Demobilization and remobilization is dependent on the forecast of rain and what is available for storage. This could be as short as a couple days to a couple months.

11) Question:

Clin 21 and 22 refer to Emergency Demobilization and Remobilizations. If emergency demobilization and remobilization were to occur, how much time would the contractor have to demobilize? Is there a couple workdays’ notice or as much as a week+?

Refer to section 01 14 20, Part 1, 1.02, B, 1. Spillway release can happen as soon as 24 hours after notice. The notice can be provided at any time.

12) Question:

Per construction constraints, it is noted that ‘trees may only be cut between November 1st through April 14th’. However, the price schedule does not include tree removal. Nor do the drawings specify which, if any, trees are to be removed. Please confirm the extent of tree removal intended to be included in the scope. If tree removal is required confirm this cost should be included with CLIN 10 Clearing and Grubbing.

Place in CLIN 10 Clearing and Grubbing, Per section 01 14 10, Part 1.04 Project Conditions, paragraph F, time frame is between November 1 and March 31st. Refer to section 31 11 00, PART 3.

13) Question:

Spillway construction window. As no trees can be removed until Nov. 1st is the contractor to assume that no access can be constructed until Nov. 1st and spillway construction ends Nov. 30th.

Refer to section 01 14 10 Use of Site, Part 1.04 Project conditions, Paragraph F - Due to windows of work for removal of trees November 1 to March 31st, Reclamation assumes this would be completed the first fall/springtime and spillway stilling basin access, due to possible release, would be between August 15 and November 30.

14) Question:

Tree and Plant Protection. Specification indicates cost for replacement of trees or shrubs are the contractor’s responsibility, the plans do not indicate clearing limits or allowable tree removal without replacement. Is it the intent to require the contractor to replace moved trees?

Refer 31 11 00 Clearing and Grubbing - Part 3 Execution, Paragraph 3.01 Clearing – Clear adjacent to cut or fill sections to a minimum distance of 3 feet outside of slope lines. Adhere to 01 57 50 and 01 57 60. Per the Clean Water Act, workspaces should be reclaimed to pre-construction conditions in wetland areas. If species i.e. willows or other water trees or shrubs are removed in low lying areas, replacement of some tree may be needed.

15) Question:

Field Bending Bars - Specification indicates that field bending reinforcement is not allowed unless approved by COR. For accuracy and best fit this would often be needed.

Should contractors assume this will be allowed?

Refer to 03 20 00 Concrete Reinforcing – Bending of #3 and #4 rebar may be allowed with prior approval of the COR. 03 20 00 3.01.B states, “Field bending not allowed unless approved by COR.” Any field bending allowed by COR must be performed with mechanical equipment specifically designed to perform this operation.

16) Question:

Sound Concrete – Specification indicates that testing will be performed by the contractor to the concrete below the payline in the presence of the on-site government representative. Please define this testing.

Refer to 03 81 10 – Testing can be either visual or hammer test for sound concrete.

17) Question:

Saw-cutting Existing Concrete – Please clarify expectations for saw cutting methods requested. Is panel sawing required, or is hand performed allowable?

Refer to 03 81 10 – Saw cutting method is a means of approach by the contractor.

Contractor is to ensure a clean sharp edge.

18) Question:

Core Drilling – Please clarify expectations for core drillings methods requested. Is an anchored core drill required, or is hand performed allowable?

Government Response:

Refer to 03 81 10 – If performing anchored, ensure reinforcement is not damaged. When performing either, ensure edge is clean and sharp.

19) Question:

Geotechnical Information – Specifications indicates that no geologic or subsurface conditions has been collected. For bidding purposes, what geotechnical conditions should be assumed?

Refer drawing 454-D-161 for assumed rock location.

20) Question:

Cut Slopes – Specifications requires cut slope be protected using compost blankets or geotextiles. How is this work measured and paid?

An amendment will be forthcoming to remove Section 31 25 10-3.02 Cut Slopes.

21) Question:

Plan and Profile – Plans indicate contractor shall obtain new topographic data and recreate plan(s) and profiles based on obtained data. Is this limited to grading plans? Is this work required to be performed and or stamped by Professional Engineers?

The note on 454-600-60005 applies to grading plans. Reference Section 01 71 20 – Surveying Section 1.05 Qualifications. Also, see 01 78 30 Project Record Drawings 1.02.B.4 for Earthwork Drawing submittal requirements.

22) Question:

Concrete Forming – Note 3 Indicates that all slopes in between lift 5 and 18 shall be formed. Is this requirement relieved if the contractor utilizes shotcrete placement?

If shotcrete is used, forms will not be required.

23) Question:

Per CLIN 18 and Spec 32 31 30 - 31 LF of barbed wire fence is called to be installed.

However, the drawings do not specify location. – Please confirm the location of the barbed wire fence intended.

Refer to Drawing 454-600-60005 – Barbed wire area is near USGS Stream gage location.

24) Question:

Per CLIN 19 and Spec 32 92 20, 3.4 acres of seeding and soil supplements is required.

The specification section clarifies products to be used. However, the drawings do not specify locations of the products listed. – Please Confirm quantity and locations of seeding and soil supplements intended.

Location of seeding and soil supplements will depend on soil revetment. It includes acreage to reclaim the borrow pit area.

25) Question:

What is the Load Capacity of the spillway bridge?

Government Response:

Drawing 454-600-60005 – Metal Grade Bridge Deck Max LL = 150 psf.

26) Question:

Is a potable water source available? If so, where and what distance from the spillway is the closest source of potable water? Or does all the water need to be trucked in?

Water is serviced from a rural water system. Main watermain is only 1” pvc that runs along the east edge of North Dam Rd. Water service would need metered for consumption and protection against freezing.

27) Question:

Is 110 V, 220V, and /or 480V, 60amp power electric available at existing outlet/ panels?

Government Response:

On- site electrical is available through Black Hills Power (BHP). Existing outlets/panels are limited to dam use only due to the age of infrastructure. Additional information can be sought from BHP for drop downs and transformers.

28) Question:

What are discharge requirements (if any) for water used during hydro-demolition? If suspended solids are removed, what acceptable levels of PH would be needed to discharge water on site?

Due to being on the Cheyenne River, permits for temporary dewatering, construction, and temporary construction discharge permit(s) may be needed. Discharge constituent limits, including pH, will be determined in the permit.

29) Question:

Debris from concrete demolition will be clean fill. Is there a suitable location on site that can be used to dump this clean debris. Which will be free of any reinforcing steel?

Borrow Area for the temporary access road will be placed back in the borrow area.

Concrete debris can be placed in the borrow area, also, if the size of debris is less than 6” in diameter.

30) Question:

Are Anchors allowed to be placed in the spillway slab for tying off equipment and personnel?

Yes, as long as drilling for the temporary anchor points do not damage the existing reinforcement. Contractor is to verify locations of existing reinforcement prior to drilling.

31) Question:

Can stairs be installed down the steepest portion of the spillway so workers can safely access areas where repairs are to take place?

This is considered Contractor means and methods to access the spillway. Plans and approval will need to be accepted prior to being installed.

32) Question:

Can we tie off to Tainter (Radial) gates, Bridge deck?

Government Response:

Tie off to the bridge system is acceptable to provide safety harness security of employees.

Specific locations and limitations of magnitude will need to be coordinated with Reclamation prior to proceeding with a ‘tie-off’ system. Locations are dependent on several factors, such as direction and magnitude of loading, edge distance, embedment depth, post-installed fastener selected, anchor spacing, in-place reinforcing, etc ...

Engineer approval is needed prior to attachment. Tie off to any operational/movable equipment is not authorized.

33) Question:

Will another site visit be scheduled? If not, are we able to visit the site?

Government Response:

Due to limited time, a second site visit will not be available. Visiting the site on one’s own is not feasible due to security of the site.

34) Question:

What is the anticipated start date?

The anticipated Notice to Proceed (NTP) is September 2024.

35) Question:

Will the COR’s inspector be onsite full-time to allow for immediate inspections, or will inspections require notice and scheduling? An on-site full-time inspector will allow for a more efficient operation/duration.

Government on-site inspector will be on site each day.

36) Question:

Is it required to clean all the concrete surface in the spillway prior to concrete removal, or just the areas where concrete removal will take place?

Refer to Section 03 81 10 Concrete removal – Paragraph 3.07 - areas that have dust or debris from concrete removal.

37) Question:

Is vegetation removal allowed in areas around the spillway or is it required to preserve the existing vegetation?

Refer Section 31 11 00 Part 3.02 Grubbing – Grub ground surfaces to be under permanent access road embankment, temporary access road embankment and surface of excavation to be used for embankment.

38) Question:

Can floats and small barges be put at the bottom of the spillway to pump water and use for vacuum hoses which would extend over to the shoreline. If allowed are there any restrictions?

Barges can be placed in the spillway stilling basin, care must be given when placing due to the dissipaters at the bottom. Any temporary pumping of water will need to acquire at least a water right temporary use permit, dewatering permit and possibly construction permit though the South Dakota Department of Agriculture & Natural Resources

(DANR).

39) Question:

Are we allowed to propose alternate methods of repair/value engineering for the spillway?

Please see L.16, WBR 1452.215-81(g) Proposal Instructions/Volume III, Price Proposal.

40) Question:

Is there a standoff distance required (limits of demolition) around any piece of dam equipment or MEP? (I.E. gates, supports, ect.)

Reference 03 81 10 – Concrete Removal 3.02.A. Approval of demolition will be through Submittal RSN 03 81 10-1, Concrete Removal Plan.

41) Question:

Considering repairs near the waterline at the bottom of the spillway, what distance above the waterline will be the limit of demolition?

Reference 454-600-60009 – Limit of demolition near waterline is dependent on water elevation during construction. See Note 2 – Areas of repair may be field adjusted.

42) Question:

Will crane access to both sides of the dam be allowed? If not, what is an acceptable location for a crane?

This is considered means and methods for approach to accessing spillway.

43) Question:

Will the level of the reservoir be reduced prior to the start of work to allow for reserve water capacity to help prevent an emergency demobilization of equipment and personnel from the spillway?

Based on historical elevations and release in Section 01 14 20 and 51 20 00, the government will assess the reservoir level(s) prior to starting work in the spillway basin.

44) Question:

What are normal working hours? Can work be performed outside working hours? Will weekend work be allowed?

Reference Section I – Contract Clauses I.1 52.252-2 Clauses Incorporated by Reference and Clause 52.222-4 “Contract Work Hours and Safety Standards.”

45) Question:

What is the distance and load limit of the existing roadway to the base of the spillway?

The current roadway does not extend to the base of the spillway and is currently two track to the USGS stream gage station. Overgrowth of trees has limited size of vehicles to 1-ton pickups or smaller. Load limit of existing roadway is unknown.

46) Question:

Will the maximum depth of concrete repairs be 6”? there is a picture in the plans that indicate a measured depth of eroded concrete of 10.5”.

Per section 03 30 06 Concrete Placement – Assume a 6-inch depth for bidding purposes.

Or to sound concrete as determined by the COR. The picture in question has illusion of tape being deeper than the actual depth, as it is measuring against the edge closest to the camera. The offeror should anticipate some removal in excess of 6-inch depth.

47) Question:

List utilities and installations that will need protection.

Government Response:

List is not all inclusive—

Dam Tender Residence (No Entry), Canal outlet works and gate house, River outlet work gate house.

Right training wall and slope, Spillway basin all concrete underwater, Electrical lines overhead and underground running to dam and associated facilities, Radial Gates, Radial gate arms, Concrete Rebar below surface, Bridge across radial gates and associated equipment on deck.

48) Question:

What inspections or hold points will be required during the construction process?

Government Response:

Inspections will be associated with any definable feature of work, i.e., concrete forming, removal and control of water, concrete reinforcing, concrete removal, compacting of earth material, etc.

49) Question:

The plans reference the work was based on inspections via rope access in 2019. Do the bid quantities represent anticipated growth of the repair areas?

The plan and quantities were based on the 2019 inspection.

50) Question:

What are the requirements to store liquid fuel in the planned contractor area?

Government Response:

Refer to section 01 57 30 Water Pollution Control, Part 3.01 Paragraph D 3.

51) Question:

Can we get a current WD that would be associated with this project?

Government Response:

Please refer to Section J, Attachment 0001, General Decision Number: SD 20240032 dated 01/05/2024.

52) Question:

We would respectfully request a bid extension of 10-14 days.

Government Response:

Refer to Amendment 0001.

53) Question:

Please confirm that subcontractors; experience can be included and count towards the General Contractor’s Related Past Performance Evaluation.

Refer to M.2 WBR 1452.215-82, paragraph (e), Factor 3 Past Performance.

54) Question:

Will the contractor be responsible for rebar scanning on every repair?

Refer to Section 03 81 10, paragraph C, Concrete Removal. As part of the Concrete Removal Plan (Table 01 33 00A—List of Submittals), submit methods and equipment to be used to locate embedded metalwork and reinforcement within repair areas.

Contractor is to verify locations of existing reinforcement prior to drilling.

55) Question:

Will the contractor be responsible to provide access to every repair for the owner, this will change how we approach access for all repairs or will picture communication suffice for some areas.

Section of E.2 52.246-13 Inspection-Dismantling, Demolition, or Removal of Improvements Aug 1996 – Access to the site should be made known to the Contracting Officer’s Representative (COR) or on-site representative of anticipated operations, so the COR can schedule inspections. Also, see Section G, WBR 1452.201-80 Contracting Officer’s Representative’s Authorities and Limitations.

56) Question:

Can the barge specification called out on PG 74/75 be altered if the contractor is responsible for the haul permits.

Section 01 35 25 Marine Work 2.01.B. The government will not be responsible for incurred cost of haul permits.