B11_DRY_BLOOD_DAM_-_SF1510-56_20220729_USG_FINAL_0001.doc

DRY BLOOD DAM RECONSTRUCTION

Solicitation No: 140L0622R0038

SEQ CHAPTER \h \r 1Form 1510-56

(December 1985)

UNITED STATES

DEPARTMENT OF THE INTERIOR

BUREAU OF LAND MANAGEMENT

SITE INSPECTION TOUR / PREBID CONFERENCE RECORD

3. Date and Time: 07/8/22 1100 HRS MST

7. Attended By:

(Include area code)

www.youderianconst.com

(406) 566-2757

Bill Whealy Aqua-Terra Restorations Prospect2@bresnan.com

406-370-6727

303-236-2211

850-598-8282

8. Questions asked, and responses given: Contractors were instructed to submit all questions in writing to CO.

Q4. The project requires an NRMCA Plant certification. We do not have the certification. Can it be waived? (NE & Tyler) A4. The NRMCA Batch Plant Certification can be waived if the other requirements of the concrete mix design are fulfilled.

Q5. ASR Requirements for aggregate. (Tyler / see Q37) Attached see our ASTMC1293 tests for concrete rock and sand. The rock was shown to have a 0.03% expansion at one year. The sand was shown to have a 0.06% expansion at one year. Rock will make up 60% of the aggregate and sand will make up 40% so … weighted averages will give you a 0.04% expansion, the maximum allowed.

It is noted however, ASTMC1778-16 is now considered the best practice. As you can see ASTMs C289 and C227 are no longer considered best practice and have fallen out of favor. C1293 is at least a year long and is the most reliable with regard to field service. C1260 is notorious for all the false positives of aggregates with excellent field history.

Block one asks, “Is there a proven history of satisfactory field performance…?”. MDT completed an exhaustive study with MSU and found that ASR problems did not exist in Montana. Consequently, neither MDT nor Montana

Public Works have ASR requirements. Is the ASR information provided sufficient?

A5. The provided ASTM C1293 results indicate these aggregates would be acceptable for deleterious alkali-silica reaction. The test results will be examined further as part of the concrete mix design review process after the contract award.

Q6. What are the new subcontractor requirements for this project?

A6. 15% of the work needs to be completed by the prime contractor.

Q7. How long will award take after the bid opening?

A7. The government will make all efforts to award within 60 days after bid opening with the knowledge that it may extend to 60 days Q8. Why is muck excavation listed as an estimated quantity?

A8. Muck excavation was estimated based on estimated embankment excavation below the apparent water surface at the time of the design field investigation and the extent of the outlet works muck excavation shown on Sheet OW1.

Q9. Period of performance, is there going to be a winter shutdown? (Contractor remark is there are temperature requirements associated with the amended soil productions).

A9. The government established a 360-day period of performance to account for the winter weather.

Q10. Will the contractor be required to maintain or stop the flow thru the dam during construction?

A10. The Contractor is required to dewater the reservoir and perform water control measures necessary to complete the work. See Specification 01150(1.07) (Q).

Q11. What will constitute an unusual weather event?

A11. This will be evaluated on a case-by-case basis.

Q12. After completing local market research, it was discovered that the local concrete will not meet specifications with respect to alkali if using locally available aggregate. Does the government want or expect the local vendors to import aggregate that meets specifications to comply?

A12. See Question 5 and the corresponding response.

Q13. Cattle management, and the public’s access to the site, who is that supposed to be handled?

A13. The new fence is designed to exclude cattle from the site, but if a rancher were to turn cattle into the site the BLM should be contacted so they will work with the rancher to remove the stock.

The public will have access to the west side of the reservoir, the area around any construction activities will be considered A CONSTRUCTION SITE and the public will be not allowed to occupy that area. If there is conflict the BLM should be contacted and if there is an emergency the Petroleum Co. Sheriff should be contacted as soon as the problem is recognized.

Q14. Filter sand will be paid for using neat line dimensions to calculate the quantity, how is the contractor supposed to estimate that?

A14. The filter sand quantities have been estimated based on the neat lines presented in the contract documents. See Specification 01150(1.07) (G).

Q15. Channel grading operation on sheet OW2B (Sht. 19 of 34, bottom cross section) approximately 400’ leave a lot up to the imagination when it comes to estimating a lump sum cost. What will be the actual distance and quantity of work associated with this activity?

A15. Assume the channel grading will extend 400 feet downstream of the stilling basin for bidding purposes.

Q16. The required SWPPP (Storm Water Pollution Prevention Plan), who handles that?

A16. Those are administered by the Montana Department of Environmental Quality. All the forms are located on their website. It would be worth contacting them for the administration requirements for that permit. Typically, the prime contractor administers the permit until the end of construction, and it is turned over to the Government to administer after that.

See specification Section 1060 for details on the SWPPP related responsibilities of the Contractor and Government.

Q17. County Road Encroachment permit (width of cattle guard)?

A17. This is administered by the Petroleum County and all paperwork and requirements are available from their county government. The cattle guard will consist of (2) 12’ wide cattle guards for a free travel way width of 24’.

Q18. Is South Fork of Dry blood a fishery?

A18. Yes Q19. Are the items that say lump sum able to be adjusted?

A19. Lump sum items will not be adjusted unless there is a differing site condition or something else that qualifies for a contract modification.

Q20. Can the contractors receive an extension of question deadline?

Q20. This will be evaluated on a case-by-case basis.

Q21. Travel time between batch plant and the site will be about 1.5 hours which is the edge of approved concrete placement protocol. Concrete time frame is tight, will the government be able to perform all testing in a very short time frame?

A21. The use of a set time retarding and/or hydration control admixtures is suggested due to the long travel time from the batch plant to the project site. The ready-mix supplier should also be able to adjust the slump and air content at the project site.

Q22. What happens to the existing outlet pipe and demolished fencing materials?

A22. Demolition material becomes the property of the Contractor and shall be removed from the site. The Contractor is responsible for lawful transport and disposal of materials. See Specification 02050.

Q23. Can contractor use construction water from other reservoirs, and what are the other closest water sources?

A23. Yes, if the water meets specifications water can be used from this reservoir and Dry Blood Reservoir which is located approximately ± 2 miles from the north edge of the embankment.

Q24. Who is the BLM permittee for this allotment?

A24. – Permittee information is not disclosable at this time

Q25. Is seeding on contractor afterward?

A25. No, the government will be responsible for the seeding of the site.

Q26. Is concrete testing required?

A26. The Government will be performing concrete field testing as described in paragraph 03300-3.11.

Q27. How deep is reservoir?

A27. At time of site visit approximately 12’ Q28. Will we get electronic surfaces (ACAD or Civil3D files) before bid?

A28. No, these will not be provided prior to award Q29. What is the fencing spacing?

A29. See the revised fencing specification included with this response.

Q30. Drainage Crossings? Breakaways

A30. See the revised fencing specification included with this response.

Q31. Who removes windmill?

A31. The government will remove the windmill before construction begins.

Q32. Who supplies the power at the site?

A32. The county website indicated that there are 3 power companies that provide power to Petroleum Co. (Northwestern Energy, Fergus Electric Coop, McCone Electric Coop, I think it would be best for the contractors to run down who provides power to that location Q33. Does the submission of submittals and corresponding correspondence constitute beginning work for purposes of “beginning work within 10 days of NTP”? (NE)

A33. The Government will not review submittals until NTP has been given. Review of submittals is considered part of performance.

Q34. For barb wire fence installation, what is the ratio of wood posts to steel posts; 1:4 or 4:1? (NE) A34. See the revised fencing specification included with this response.

Q35. Can the Government supply any inflow data regarding historic creek flows entering this reservoir measured in CFS? (NE)

A35. This is an ungauged water course so there is no historical data available.

Q36. Please confirm it is permissible to improve the on-site access road during construction, including blading, grade changes, and gravel surfacing. (NE)

A36. See Sheet R1, Notes 2-3. Blading, grade changes, and gravel surfacing may be used to construct a temporary access road within the bounds shown on Sheet R1. The temporary access road shall be returned to the original grade/condition at the conclusion of the project.

Q37. In regards to ASR, I have attached our ASTMC1293 tests for concrete rock and sand (see attached pdf). The rock was shown to have a 0.03% expansion at one year. The sand was shown to have a 0.06% expansion at one year. Rock will make up 60% of the aggregate and sand will make up 40% so … weighted averages will give you a 0.04% expansion, the maximum allowed. It is noted however, ASTMC1778-16 is now considered the best practice. As you can see ASTMs C289 and C227 are no longer considered best practice and have fallen out of favor. C1293 is at least a year long and is the most reliable with regard to field service. C1260 is notorious for all the false positives of aggregates with excellent field history. Block one asks, “Is there a proven history of satisfactory field performance…?”. MDT completed an exhaustive study with MSU and found that ASR problems did not exist in Montana. Consequently, neither MDT nor Montana Public Works have ASR requirements. Please ask the GOVERNMENT if the ASR information provided is sufficient. Will existing local aggregate materials with historical satisfactory performance be considered acceptable for use in concrete as regards ASR spec on this project vis-a-vis the information provided. (NE)

A37. See the response to Question 5.

9. Was a complete site inspection made? Yes No. (If “No,” explain)

DRY BLOOD DAM RECONSTRUCTION

Pre-Bid Conference | Site Visit Questions & Answers

Q1. The project requires a Type II or V cement. Due to environmental concerns, Type L is the only type of cement available to us. Is the Type L acceptable? (NE & Tyler)

A1. Type L cement is an acceptable substitute for the specified Type II or V cement. The hydraulic blended cement is to be low-alkali Type IL, IP, IS, or IT in accordance with ASTM C595.

Q2. The project requires the use of Pozzolans. Since we do not use them to mitigate ASR tests, and pozzolans are no longer economically advantageous. Are Pozzolans Required? (NE & Tyler)

A2. The use of pozzolans in the concrete mix is not required.

Q3. Could the drain rock specifications be changed on the No. 4 sieve to “0-25” to reduce screen changes for suppliers? (NE & Tyler)

A3. It is assumed that the question is directed at the gradation for drain gravel (Section 02300, 2.05). The drain gravel gradation is based on filter compatibility with the filter sand (Section 02300, 2.04). Slight variations to the drain gravel gradation can be evaluated after contract award, by exception, based on the accepted filter sand gradation.