Attch 7 - Amend 0001 Questions_Answers and Attendees List_0001.pdf

SLICK ROCK CULVERT REPLACEMENT

Solicitation No: 140L0621R0001 – Amendment 0001 Questions & Answers, Attendees List

Question and Answers

Reference Questions Is this project to be executed as a single phase or multiple phases for constructions? Single phase as in 1 project/contract and under the POP.

Contractor to determine if they will do each site individually or all three sites at the same time. Detour roads must be passable and contractor’s traffic control plan must be followed.

Project Specifications

SECTION 011000 SUMMARY

1.2.

B.

Sites 1, 2, & 3.

Rip-Rap will be placed around the culvert pipes on both ends

The specifications mentioned in front of the culverts a 4 feet width Rip-Rap apron, but it does not mention the dimensions to place around the culvert.

What are the Rip-Rap dimensions to calculate volumes around the culverts? There is no detail.

Depth would be roughly 1 size rocks (6”-9” sized rip rap) 4-foot apron in front of culverts. End of apron provide 2’ deep grouted rip rap. Place grouted rip rap around sides of pipes, in between pipes, and on the fill material directly above pipes. Dimensions vary based on site. Calculate based on site with how many pipes there are. Drawings show spacing of pipes from survey. See photo from previous job.

Grouted rip rap will be similar, but also needs to incorporate a 4-foot apron out front. Google earth will help as well.

Project Specifications

SECTION 011000 SUMMARY

1.2.

B.

Sites 1, 2, & 3.

Cover for culverts will be a minimum of 12''

Is the road cross section included in this 12 inches, or the road cross section additional on top of the 12 inches to include the 4 inches of asphalt and the 8 inches of ABC material for a total cover of 24 inches on top of the culver pipes?

12” minimum of cover over the pipes. 8” base course and 4” asphalt. The cover ranges from site to site, but minimum 12” of cover is required.

Project Specifications

SECTION 011000 SUMMARY

1.2.

B.

Sites 1, 2, & 3.

Detour road will need to be place around the pipes to allow traffic to flow around project site

Can the government provide the location and dimensions for each of the 3 sites to calculate the volumes for materials? For example, north or south side of the road and the width and length for the road detours. Detour road sites will be determined with BLM approval. Detour roads are minor and go around site and through wash. Material would be graded natural ground and base course as top layer to give stability and maintained as needed.

Do the detour roads need to be asphalt-paved? No.

Project Specifications

SECTION 011000 SUMMARY

1.2.

B.

Sites 1, 2, & 3.

All three (3) sites will need to be surveyed to ensure proper placement of pipes and proper flow of potential water.

Can the Government provide the plans for site 3 with the survey details like the provided plans for site 1 and 2? No detail for site three is available.

Contractor to survey site three before removal to get points and after at all three sites to ensure proper placement and alignment.

Project Specifications

SECTION 011000 SUMMARY

1.2.

B.

Sites 1, 2, & 3.

Contractor is responsible for bringing temporary storage tank, and fill tower during project duration.

Could the tank be a Klein Water Tank like the one on the photo, could the tank be fitted to the well pump? It is contractor’s responsibility to verify hook ups to well will work. BLM takes no exception at the type of tank shown in picture.

Project Specifications

SECTION 011000 SUMMARY

1.2.

B.

Sites 1, 2, & 3.

Temporary construction fencing is required around construction well site during duration of project

Can the Government provide the size for well site that needs fencing? Fencing is determined by the equipment brought in by contractor. Fencing will not go around well as other entities use the well. Fencing is strictly to block off contractor’s equipment.

Does the fencing need to have fabric? Preferred, but not required if contractor can show they are blocking off their equipment.

Project Specifications

SECTION 011000 SUMMARY

1.2.

B.

Sites 1, 2, & 3.

Crack Seal joints of asphalt and existing chip seal.

What locations need to be crack Seal, and how many linear feet need seal? On the joints that were cut between the existing chip seal and the new asphalt paved. Each site should have 2 joints (North and South ends of the pipes) Road is 20’ wide.

What areas need chip seal and how many square yards? There is no chip sealing on this project. The road is existing chip seal. When pipes are placed, and cover is built up asphalt is to be paved as part of this project.

Project Specifications

SECTION 011000 SUMMARY

1.2.

B.

Can the Government provide the dimension on the Rip-Rap to be place on the wash banks to calculate the material volume? There is no detail. Depth would be roughly 1 size rocks (6”-9” sized rip rap) 4-foot

Sites 1, 2, & 3.

All 3 sites get grouted rip rap around pipes, to wash banks, and 4 foot apron in front. End of apron place grouted rip rap 2' down.

apron in front of culverts. End of apron provide 2’ deep grouted rip rap. Place grouted rip rap around sides of pipes, in between pipes, and on the fill material directly above pipes. Dimensions vary based on site. Calculate based on site with how many pipes there are. Drawings show spacing of pipes from survey. See photo from previous job.

Grouted rip rap will be similar, but also needs to incorporate a 4-foot apron out front.

SECTION 032000 – CONCRETE REINFORCING

PART – 2 PRODUCTS

2.1 STEEL REINFORCEMENT

B. Epoxy-Coated Reinforcing Bars:

1. Steel Bars: ASTM A615/A615M, Grade 60 deformed bars.

2. Epoxy Coating: ASTM A775/A775M with less than 2 percent damaged coating in each 12-inch bar length.

Does this mean 100 percent of the reinforcing bars are to be epoxy coated? No coating needs to be on the reinforcing bars.

SECTION 032000 – CONCRETE REINFORCING

PART – 2 PRODUCTS

2.2 REINFORCEMENT ACCESSORIES

B. Steel Tie Wire: ASTM A1064/A1064M, annealed steel, not less than 0.0508 inch in diameter.

1. Finish: Plain ASTM A884/A884M, Class A, Type 1, epoxy coated, with less than 2 percent damaged coating in each 12-inch wire length.

Does this mean that the tie wire needs to be epoxy coated? No coating needs to be on the tie wires.

SECTION 032000 – CONCRETE REINFORCING

PART 3 -EXECUTION

3.2 INSTALLATION OF STEEL REINFORCEMENT

B. Accurately position, support, and secure reinforcement against displacement.

2. Do not tack weld crossing reinforcing bars.

Can the Government confirm that no welding will be need it for the reinforcement steel? No welding is needed.

SECTION 032000 – CONCRETE REINFORCING

PART 3 -EXECUTION

3.3 JOINTS

A. Construction Joints: Install so strength and appearance of concrete are not impaired, at locations indicated or as approved by Government.

Can the Government provide the joint detail drawings for the concrete? No joints are needed.

SECTION 033000 - CAST-IN-PLACE CONCRETE

PART 3 -EXECUTION

3.1 CONCRETING

J. Begin curing concrete slabs after finishing. [Keep concrete continuously moist for at least seven days] [Apply membrane-forming curing compound to concrete] [Apply membrane-forming curing and sealing compound to concrete].

This specification refers to concrete slabs.

The concrete under this scope is structural, Are the curing details still apply to water cure for seven days, following with application of membrane-forming compound and sealing after the seven days of water? No need for water curing.

Or leaving the concrete forms in place for at least seven days follow by form removals then applying the membrane-forming compound and sealing?

Please clarify. This will work.

SECTION 311000 - SITE CLEARING

PART 3 – EXECUTION

3.2 TEMPORARY EROSION AND SEDIMENTATION

CONTROL

A. Provide temporary erosion- and sedimentation-control measures to prevent soil erosion and discharge of soil-bearing water runoff or airborne dust to adjacent properties and walkways, according to erosion- and sedimentation-control Drawings and requirements of authorities having jurisdiction.

Does the Government have an existing Storm Water Pollution Prevention Plan (SWPPP) to utilize, or does a new SWPPP need to be develop? No need for a SWPPP. BLM has a Nation-Wide Permit for the area.

SECTION 312000 - EARTH MOVING

PART – 1 GENERAL

1.9 FIELD CONDITIONS

D. Do not commence earth-moving operations until temporary site fencing and erosion- and sedimentation-control measures specified in Section 015000 "Temporary Facilities and Controls" and Section 311000 "Site Clearing" are in place.

Regarding the temporary fencing: Do the sites 1, 2, & 3 need to have temporary fence? No, the traffic control plan should show barricades to block road especially when the road is open while culvert pipes are being replaced. Contractor to ensure while the road is open (a hole) cars know not to drive into it.

SECTION 313700- RIPRAP, BOULDERS, SOIL RIPRAP

AND BEDDING

PART – 2 PRODUCTS

2.1 MATERIALS

A. All materials shall be in accordance with the respective ADOT Specifications as follows:

1. Riprap Materials: ADOT 913.

2. Granular Filter: ADOT 913.

3. Geotextile Filter: ADOT 1014.

4. Grout: ADOT 913.

Regarding the materials ADOT 913 and ADOT 1014:

Are both required for the Rip-Rap Installation?

Grouted Rip-Rap is required. Geotextile Filter is not needed.

SECTION 313700- RIPRAP, BOULDERS, SOIL RIPRAP

AND BEDDING

PART – 2 PRODUCTS

2.2 ACCESSORIES

A. All accessories shall be in accordance with the respective ADOT Specifications as follows:

1. Gabions: ADOT 913.

Gabions ADOT 913 are called-out in the specifications but not shown in the drawings.

Are gabions required for this work? No.

SECTION 313700- RIPRAP, BOULDERS, SOIL RIPRAP

AND BEDDING

PART 3 - EXECUTION

3.2 RIPRAP STONE

C. Hand-placed or Grouted Riprap:

Does all the Rip-Rap to be place and grouted by hand? No, but grouted Rip-Rap should have a good covering and no bare spots.

SECTION 321216-ASPHALT PAVING

PART 3 - EXECUTION

3.3 PATCHING

Can the Government provide the areas and dimension for the asphalt patching? Road is 20’ wide. Length is determined by how many pipes and

A. Asphalt Pavement: Saw cut perimeter of patch and excavate existing pavement section to sound base.

Excavate rectangular or trapezoidal patches, extending 12 inches into perimeter of adjacent sound pavement, unless otherwise indicated. Cut excavation faces vertically.

Remove excavated material. Compact existing unbound-aggregate base course to form new sub grade.

size based on site. Piping size is in summary of work and sites 1 and 2 have details showing spacing of pipes. Site 3 is a single pipe. As noted in summary, cuts/asphalt to be paved 5’ past culvert edges.

SECTION 321216-ASPHALT PAVING

PART 3 - EXECUTION

3.4 REPAIRS

a. Crack and Joint Filling: Remove existing joint filler material from cracks or joints to a depth of [1/4 inch (6 mm)]

What areas and how many linear feet to perform the crack and joint filling? On the joints that were cut between the existing chip seal and the new asphalt paved. Each site should have 2 joints (North and South ends of the pipes) Road is 20’ wide.

SECTION 321216-ASPHALT PAVING

PART 3 - EXECUTION

3.5 SURFACE PREPARATION

B. Herbicide Treatment: Apply herbicide according to manufacturer's recommended rates and written application instructions. Apply to dry, prepared subgrade or surface of compacted-aggregate base before applying paving materials.

1. Mix herbicide with prime coat if formulated by manufacturer for that purpose.

Besides the Herbicide application an application of prime coat is required to be applied to the paving surface? Herbicide is not required for this project.

Section 602. - CULVERTS AND DRAINS

602.03 General.

Construct a piping plug unless the culvert inlet is protected with a full-height headwall, Can the Government provide the dimension for the piping plug; width, height, and length? Plug is not required. Culverts to be arched at ends and open.

Section 635. - TEMPORARY TRAFFIC CONTROL Construction Requirements

635.04 General. Furnish, install, and maintain temporary

traffic control devices adjacent to and within the project as required by the MUTCD, traffic control plan, and Section 156. Install and maintain traffic control devices as follows:

Does the Government have a Traffic Control Plan in Place for this work or does a new Traffic Control needs to be develop? No, it is the contractor’s responsibility to submit a traffic control plan for approval.

Solicitation

L-5 PROPOSAL SUBMITTAL

Section L-5 (Proposal Submittal) notes that the Offeror is to submit four volumes in accordance with the solicitation. Paragraph (f) of the Proposal Submittal identifies only three Volumes (1) Required Documentation, (2) Technical Approach, and (3) Pricing. Please advise if and/or what Volume 4 is and what it should contain. Only three (3) volumes are required for this solicitation. The solicitation has been revised, please see revision in red.

1. Are ADOT Permits required for this road? Who owns the road, BLM, or Arizona State?

What permitting requirements must we follow, i.e., ADOT Approved Traffic Control Plan, SWPPP? This road is BLM owned. No special permits are required like ADOT permits or SWPPP. Some counties have required permits for dust control or various activities and contractor is required to research and provide those permits if needed.

2. In Section 635.03 it is stated to provide flaggers and/or pilot car. Will flaggers or pilot cars be required for the gravel detour roads or will signage and barricades be sufficient? Signage and barricades are sufficient. No need for flaggers or pilot cars.

3. Section 635.04 state “Furnish, install and maintain temporary traffic control devices adjacent to and within the project as required by the MUTCD, traffic control plan and Section 156.”

MUTCD does not have a Section 156. AZDOT does not have a Section 156, Arizona Department of Transportation Standard Specifications do not have a Section 156, please explain where Section 156 can be found. Contractor to submit traffic control plan. Follow approved traffic control plan and MUTCD requirements.

4. BLM announced Road Closures for Haekel Road in the fall of 2020, was that announcement for this project? The BLM Announcement stated that signs will be posted at Bowie and Safford? Will these signs be the responsibility of the Contractor? The road closures were not for this project. Contractor is in charge of creating a traffic control plan and all signs and barricades for the duration of the project.

5. Are there liquidated damages on this project? If so, what are they? No.

6. Is there a government location that we may dispose of asphalt or grubbings close to the site? No, any trash/material removed and not used will need to be hauled away and contractor’s responsibility for disposal.

7. Due to COVID-19 will the required bi-weekly progress meetings (Section 013100 E) be on site or virtual? Virtual/phone calls.

8. In Section 017300 1.5.A Bathymetric Surveying, it is listed as a required qualification for the professional land surveyor used for this project. Is Bathymetric Surveying needed for this project? Is this a requirement for the surveyor used for this project? Bathymetric surveying is not required. Construction survey is required to ensure pipes are placed in correct locations. Site 3 needs to be surveyed before removal to ensure proper placement of new pipe.

9. Sections 01400 1.8.B&C indicate that a Manufacturer’s Technical Representative and a Factory Authorized Service Representative will need to be on site. Is this applicable for this project? If so, for what materials? This is not required.

10. In Section 011000 1.2.B the Specifications state: “Any damage to detour roads during construction phase will need to be addressed and repaired by contractor.” Also, in Section 011000 1.3 the Specifications state: “Activity on this project may not begin prior to April 15, 2021 nor extend beyond 90 days.” Understanding that South East Arizona’s Monsoon Season runs between June and September and knowing that this area is prone to flash floods and roads washing out; is there any provision for protection of the Contractor against Monsoon type weather and having to rebuild these detour roads multiple times? It has come to the attention of this Contractor that for a previous project on Haekel Road, the temporary roads were replaced 6 times due to inclement weather. Weather delays would be unforeseen site conditions. BLM and contractor will work together to come up with a solution to complete project if weather delays happen. Contractor to ensure detour road is safe and passable at all times.

11. Please provide construction regulations for temporary gravel detour roads. Do we need to install temporary culverts in these detour roads? Will the Government or Contractor be responsible for supplying these temporary culverts? Temporary culverts are not required.

Detour road will be graded natural material with base course on top layer to give some compaction and a safe drivable surface. Roads are to be maintained as traffic needs to be able to pass at all times.

12. Is there any additional horizontal control on walls, pipes, riprap and roadway that is going to be provided to assist with the layout? As the plans are drawn up, there is no way to provide any survey layout. No, the survey is to ensure proper placement and flow of the pipes. The cutoff walls are for site 1 and need to be measured out to ensure with survey the pipes are placed correctly. The road will follow existing road path. Rip-rap to be placed around pipes and in front.

13. Can we get a detail for the riprap showing dimensions and depths? There is no detail. Depth would be roughly 1 size rocks (6”-9” sized rip rap) 4-foot apron in front of culverts. End of apron provide 2’ deep grouted rip rap. Place grouted rip rap around sides of pipes, in between pipes, and on the fill material directly above pipes. Dimensions vary based on site. Calculate based on site with how many pipes there are. Drawings show spacing of pipes from survey. See photo from previous job. Grouted rip rap will be similar, but also needs to incorporate a 4-foot apron out front.

14. Are the flared ends of the pipe to be placed up stream? Are both ends of the culvert to be flared? There are no flared ends on the pipes. The pipes are to be pipe arched ends.

15. What gauge is the arch? Does the arch gauge vary between the different culvert sizes? The pipe arch culverts are 12-gauge steel. Same as the full length of pipes. The gauge does not vary between different sizes.

16. Do you want an asphalt or any other coating on the culverts? The pipes are to be galvanized steel as noted in summary of work. No other coatings are required.

17. Do the cutoff walls require a concrete footing or just 6" of base material beneath it? Could you provide more detail? 6” compacted base course at 95%.

18. Can you confirm if flaggers are required as part of the traffic control? Flaggers and pilot cars are not needed. Signs and barricade devices are required.

19. Are the detour roads expected to have a culvert put under them and filled to match the grade on the sides of the wash, or will graded low water crossings through the wash be sufficient? Graded natural material around the project site and through the wash. Base course needs to be the top layer to give stability for traffic. Detour road through wash needs to be built up as the steep incline of the sides might not be passable.

20. What are the expectations for temporary erosion control while construction is underway? Monitor is only expectation.

21. Are all the permits in place for the structures being placed in the washes or will additional permits/engineering be required? (water flow analysis, additional layout/design requirements) No.

special permits or engineering required. Contractor to research and ensure county does not have certain permits like dust control permit. Contractor’s responsibility to get permits. SWPPP not required.

22. In regards to section 013100 progress meetings, is bi-weekly once every two weeks or twice a week?

Every two weeks.

23. What is expected for the disposal of the tree carcasses generated by the construction of the detours?

Can they be burned on site with a burn permit, mulched, or do they need to be hauled offsite to an appropriate facility? All trash, debris, and unused material including tree carcasses must be hauled off site and contractor’s responsibility to dispose of them.

24. Can excess dirt generated during construction be spread on site or does it need to be hauled offsite?

Yes, as long as it is free of trash/debris.

25. Volume 1 (Required Documentation) of Solicitation Number 140L0621R0001 requires a Bid Guarantee to be provided with the proposal for the Slick Rock Culvert Bridge Replacement. As this proposal is to be provided electronically, will a signed & sealed copy of the Bid Guarantee be required to be mailed to your office, or should we just provide an electronic copy in Volume 1? Please advise. Per L-7 bid guarantee is required as part of Volume 1. We do not need you to mail us a version.

26. Can the detour roads made from the BLM’s borrow pit material be smoothed down and absorbed into the landscape or will the borrow materials need to be returned to the pit location? Yes, the material can be smoothed down into the landscape. Borrow pit material is only for detour roads. Borrow pit material is not for the base course for the asphalt.

Site Visit Virtual Call Attendees

Name Business Contact Shannon McKnight JRock Construction shannonm@jrockconstruction.com, 801-361-8599 Michael Clay JRock Construction michaelc@jrockconstruction.com, 801-518-7610 Robert Kramme Kramme Construction, LLC kramme.robert@gmail.com, 520-507-1305 mailto:shannonm@jrockconstruction.com mailto:michaelc@jrockconstruction.com mailto:kramme.robert@gmail.com