B08_24R0030_Attachment_11_-_Q_A_0004.pdf

United States Department of the Interior

BUREAU OF LAND MANAGEMENT

National Operations Center

Denver Federal Center, Building 85

P.O. Box 25047

Denver, Colorado 80225-0047 http://www.blm.gov

140L0624R0030

GAOA Gila Box Bonita Creek Road Repair

Questions and Answers #1

1)Q: On the solicitation, it says the magnitude of the project is $500M to $1M. Please confirm.

A: Project Magnitude is $500K-$1M – see amendment 1.

2)Q: No site laydown/staging area(s) are identified in the bid documents. Please provide location and size of available laydown/staging areas.

A: There are multiple locations along Bonita Creek Road that could potentially be used as a laydown/staging area. Lat/Longs are noted below. Contractor to utilize one location at a time to not interfere with public/other projects. These are potential locations and may be occupied at the time of construction.

LAT: 32°52'38.13"N LONG: 109°30'59.31"W

LAT: 32°52'25.43"N LONG: 109°31'41.61"W

LAT: 32°52'11.45"N LONG: 109°32'6.69"W

32°53'20.71"N, 109°29'43.74"W (surplus material site may be utilized if available area for staging)

3)Q: The Geotechnical Evaluation Report, by Ninyo & Moore, January 2023 does not cover locations on this project. Is there a Geotechnical Report for this project?

A: Refer to Ninyo & Moore project dated January 12, titled Bonita Creek Roadway Improvements.

See pages 24-26 for locations. Boring B1 is in the area of improvements on sheet CS107. Boring B2 is in sheet CS110. Boring B4 - sheet CS116. Test pit TP1 - sheet CS117. Test pit TP2 is - sheet

CS119.

4)Q: Does the Government have a site to dispose of the excess material?

A: We’d prefer if as much material be spread on the downhill slopes near the site improvement work to aid in erosion control. BLM will identify where to spread material. The second option would be to stockpile at the identified surplus material site located at 32°53'20.71"N, 109°29'43.74"W.

5)Q: QC testing; Frequency of testing requirement is not specified for the various disciplines, i.e., grading, compaction, concrete, etc. Are these quantified?

A: Notes call out ADOT Specifications. Refer to ADOT MATERIALS QUALITY ASSURANCE

PROGRAM APPENDIX C SAMPLING GUIDE SCHEDULE for frequency of testing.

6)Q: Screening native rock for gabion baskets as permanent erosion control measure. Is it the

Governments intent to have the Contractors screen the material from the slope flattening areas to make the gabion rock? If so, does the Government have an area to perform this work?

A: Refer to spec section 312500 1.E “Rock shall conform to the quality requirements in Section

312000, Rock for Riprap, unless otherwise specified on plans. At least 85 percent of the rock particles, by weight, shall be within the predominant rock size range.” Site salvaged and screened rock meeting the spec is acceptable.

The surplus material site could work as a screening location of the excess material. See answer to question 5 for location details.

7)Q: Is a Traffic Control Supervisor required? If so, can this be dual hatted?

A: Can be dual hatted.

8)Q: Is a consultant required to perform the CPM Construction Schedule? Or can the contractors personnel perform this duty?

A: Contractor can perform.

9)Q: Specs state "Prepare, maintain, and proceed in conformity with Storm Water Discharge

Permit/Storm Water

A: SWPPP and NOI required. Contractor to submit plan and procure required permits.

10)Q: 1. Testing Frequency: Obtain one composite sample for each day's pour of each concrete mixture exceeding 5 cu. yd. but less than 25 cu. yd., plus one set for each additional 50 cu.yd. or fraction thereof.

2. Testing Frequency: Obtain at least one composite sample for each 100-cu. yd. or fraction thereof of each concrete mixture placed each day.

a. When frequency of testing provides fewer than five compressive-strength tests foreach concrete mixture, testing shall be conducted from at least five randomly selected batches or from each batch if fewer than five are used.

Which one is correct?

A: Follow Section 1 for simplicity. This project is relatively small, so either option provides the same frequency.

11)Q: CS501 Low Water Crossing Section shows the concrete to be ADOT- Class B. 321313 2.5 A.

states "Compressive Strength 4,000 or per ADOT Standard Specifications and details (whichever is greater) and as noted in the drawings. Which one is correct?

A: ADOT standard ford detail calls for 2500psi Class B concrete. The greater strength is 4,000 psi – contractor should place 4,000 psi concrete at the low water crossing.

12)Q: Cut & backfill (no import) 2,650 cy. Does this item include slope flattening at Sta 166+50- Sta.

168+50; Sta. 193+00- Sta. 196+50; and excavation for the Low Water Crossing at Sta. 69+50- Sta.

71+00?

A: Yes.

13)Q: Grading 7,000 yards. Please define this work on the project plans.

A: This is the approximate total disturbed area in square yards. Same stations as previous question, Sta 166+50- Sta. 168+50; Sta. 193+00- Sta. 196+50; and excavation for the Low Water Crossing at

Sta. 69+50- Sta. 71+00

14)Q: Imported Aggregate Base 20 cy. Please define this work on the project plans.

A: Imported agg base to be used at pavement patch see sheet CS502.

15)Q: Gabbion Baskets; 9’x3’x3’ filled & placed (CS 502 det 2) 31 ea. Please verify the quantity.

A: Confirmed, 22 at low water crossing CS501 and 9 at pipe outlet CS502.

16)Q: Outlets to new 24” Storm pipe incl re-working existing; rip rap. Please define this work on the project plans.

A: See CS502 for grouted rip rap at pipe outlet.

17)Q: Asphalt 4 cy. Please define this work on the project plans.

A: Pavement patch at pipe install location sta 106, see CS502.

18)Q: Misc patch repairs to road surface as required. Please provide scope, description of work and specifications.

A: Cold patch at sta 106 and low water crossing tie ins as required to repair damage as a result of construction.

19)Q: Please confirm an onsite construction water source is available for the project. Are there any restrictions on use or quantity?

A: BLM has no available onsite construction water source.

20)Q: General contractor management on-site is not specified, we are including a triple hatted

Superintendent (includes QC and SSHO roles). Please confirm this intent.

A: BLM acknowledges.

21)Q: H-4 PRESERVATION OF HISTORICAL AND ARCHEOLOGICAL DATA: Are there any known historical or archeological sites within the site work limits?

A: There are no known cultural resources that will be potentially impacted by this project.

22)Q: 1 Low Water Crossing Section. What is the width of the 4' Toe Down? What is the width of the the

8' Scour Wall?

A: The entire structure is 8” thick steel reinforced concrete.

23)Q: Detail 2 Rock Check Dam. Please provide dimensions.

A: Width of roadside ditch varies. Avg 8’ width, rock size provided on detail 2 sheet CS504.

24)Q: Cut & backfill (no import) 2,650 cy. What is the method of measurement (i.e. Cross Section or other)?

A: Engineer’s estimate is based on computer model comparing proposed and existing surfaces. No shrink or swell factors applied.

25)Q: Do the Superintendent, SSHO and QC Manager need to be 3 separate individuals?

A: Can be triple hatted if contractor has the capabilities/experience required to complete the tasks.

26)Q: Can the period of performance be extended after award once the material/equipment lead times are confirmed due to current market conditions for the equipment for this project?

A: No.

27)Q: Are soil boring reports available? If not, it will be assumed that excavation will be clear of rocks and obstructions.

A: See Bonita Creek Road Geotech report and response to Q 4.

28)Q: I see that an offer guarantee is required as well as a Payment and Performance bond in case of been awarded with the project, but I haven’t found any information related to the Liquidated Damages and wanted to ask if they are included or not, or if there are a specific amount of LDs for this proposal in particular?

A: No.

29)Q: Regarding the 12” riprap grouted and rock check dams, should we use low-strength concrete, or does it need to comply with Class B concrete specifications?

A: Can be 2000 psi or greater, refer to Sheet CS507 detail 3 note 4: “grout shall incorporate aggregate meeting astm c33, #8 (3/8"). slump shall be 9" plus or minus 2", sufficient to allow gravity flow into voids.”

30)Q: How should we dispose of the cutting/excess material from the hillside slopes? Is onsite spreading acceptable or does it need to be hauled off-site?

A: See response to question 5.

31)Q: Can you supply a map showing the laydown area that the contractor can use for storage of materials and for equipment unloading and storage?

A: See response to question 3. Lat/Longs provided for potential sites. Contractor to utilize one location at a time to not interfere with public/other projects. These are potential locations and may be occupied at the time of construction.

32)Q: Is construction water available, and will the contractor have access to it?

A: See response to question 20.

33)Q: Will As-builts be required upon completion of the work?

A: Yes, please refer to spec section 017839 – project record documents.

34)Q: Is a SWPPP & NOI required?

A: SWPPP and NOI required. Contractor to submit plan and procure required permits.

35)Q: In the specifications section 312000-Earthmoving part 1.1 subpart 1 mentions a Geotechnical

Evaluation Report by Ninyo & More, January 2023.

Can this report be provided for review as it likely has information regarding earthwork recommendations?

A: Geotechnical Eval is attached to solicitation. See amendment 4.