10.10.1932 - Addendum No. 2-Narrative-SHR Aviation Flightline Pavement Replacement.pdf

Project No.: 10.10.1932 – SHR AVIATION FLIGHT LINE PAVEMENT REPL

Project No. 10.10.1932

ADDENDUM NO. 2

TO THE BID DOCUMENTS FOR THE

SHR AVIATION FLIGHT LINE PAVEMENT REPL PROJECT

AT

199 N. HANGAR WAY, IN SAN BERNARDINO

The following changes and/or additions shall be made to the plans and/or specifications. All other requirements of the contract documents shall remain the same. The Bidder shall acknowledge receipt of the addendum by inserting its number and date in the Bid Proposal.

Changes to the Bid Package:

• Advertisement for Bids o Page 1 of the Advertisement for Bids is hereby amended to clarify that no bid may be withdrawn after the scheduled bid opening, or within ninety (90) days thereafter.

• Instructions to Bidders:

o Replace Section L Withdrawal of Bids with the following:

“Any bidder may withdraw his bid, personally, or by telegraphic or written request, at any time prior to the scheduled time of receipt of bids. If a bid is submitted through ePro, then the bid may also be withdrawn in ePro prior to the scheduled time for receipt of bids. No bid may be withdrawn after the scheduled bid opening, or within ninety (90) days thereafter.”

• Prevailing Wages o Replace “Prevailing Wage-SHR Aviation Fight Line Pavement Repl.pdf” with

“Revised Prevailing Wage-SHR Aviation Flight Line Pavement Repl.pdf”.

• Drawings o Replace “Plans-SHR Aviation Flight Line Pavement Repl.pdf” with “Updated

Plans-SHR Aviation Flight Line Pavement Repl.pdf”. Revisions include adding the San Bernardino International Airport Authority review and approval stamp on all sheets. In addition, E-01, E-02 and E-03 added additional notes and/or details accordingly.

• Report o Add “TKE SHR Aviation Flight Utility Report.pdf” which is a supplemental report to the BASEMAP AND UTILITY REPORT-GPS-SHR Aviation Flight Line Pavement Repl.pdf

• Technical Specifications o Replace Specification C-103 Water Pollution Control with “Item C-103 Water

Pollution Control.pdf”.

o The quantities included in the Bid Schedule, plans, specifications, or any other

Contract Documents are provided for the Contractor’s convenience and reference only. The Project shall be bid and awarded on a lump sum basis as required by the Owner. Accordingly, all sections of the Specifications pertaining to Measurement and Basis of Payment for individual bid items are hereby deleted, superseded, and shall have no force or effect for bidding or payment purposes. Payment for the Work shall be made solely on the basis of the accepted Lump Sum Bid Price, subject only to adjustments made by approved Change Orders in accordance with the Contract Documents. The Contractor is solely responsible for reviewing the Contract Documents and determining the labor, materials, equipment, and incidentals necessary to complete the Work for the Lump Sum Bid Price. Any estimated quantities shown in the Contract Documents are not guaranteed and shall not be construed as a basis for payment or for claims related to actual quantities encountered.

o All references to Section P-610 in the L- specifications shall be replaced with “Caltrans Section 90”.

• Special Conditions o Replace Section 1.6 Work Schedule with the following:

“Contractor may perform work from 6:00 a.m. to 2:00 a.m., 7 days a week, with the exception of County holidays, when no work will be performed. The construction schedule shall be submitted by October 13, 2026, and the preconstruction meeting will be conduct between October 21, 2026 and October 31, 2026 on a date and time mutually agreed by San Bernardino County and the contractor. This schedule shall be updated weekly and provided to the San Bernardino County’s Project and Facilities Management Department both electronically and in printed format.”

o Replace Section 1.8 Noise with the following:

“The contractor shall make attempts to minimize the noise levels during construction and shall arrange his work in a manner that will cause a minimum interference with the daily functions of the aviation facility.”

Supplemental Information:

• Add As-Built Drawings and Geotechnical Report:

o SBSD Aviation – Record Drawings.pdf.

o 12744A SBIAA – Full Set.pdf o 12-042_SBIAA_Geotech Report.pdf

Questions and Answers

1. There are Loop Sensors to replace in kind, a new Junction Box, a new Handhole, and a new Concrete Encased conduit without details for these items. Please verify and provide details for these items.

Answer: The contractor shall provide manufacturer shop drawings showing the installation details for the loop sensors and related automatic gate operator components. Material and installation requirements are provided in the specifications under Item L-126, Automatic Gate Operator and Control. The junction box and handhole refer to the same item. The plan sheet notes have been revised for clarification, and a new L-868 junction box detail and concrete-encased duct bank detail are provided with this Addendum No. 2. Please see revised sheet E-03.

2. The specifications section L-108 has two different types of No. 6 AWG Wire to be installed, “L-108-5.2 No. 6 AWG 600V, L-824, Type B Cable, Installed in Conduit” and “L-108-5.4 No. 6 AWG, Insulated Stranded Equipment Ground, Installed in Duct Bank or Conduit”. The plans do not show which will be installed in the existing conduit or the new conduit. Please verify.

Answer: The existing conduit from the electrical panel that runs beneath the PCC portion of the apron will remain in place. The existing No. 8 conductors shall be removed and replaced with new No. 6 conductors routed from the electrical panel through the existing conduit to the new handhole and then through the new conduit to the new lights. In summary, new conductors shall be installed in both the existing conduit and the new conduit to provide a complete connection from the electrical panel to the new lights. Two (2) Type B cables and one (1) equipment ground shall be installed. The quantities account for the full length of all three cables/conductors.

3. Plan sheet CS-01 describes that in Phase 1 to “Remove and store in-pavement LED lights, conduit and junction box. These items are not shown in the electrical plan sheets.

Please verify if this will need to be completed and if the items will be re-installed, become owner property, or contractor property.

Answer: The in-pavement LED lights, conduit, and junction box identified on Plan Sheet CS-01 shall be removed as part of the work. The removed equipment will not be reinstalled. All removed equipment shall become the contractor’s property and shall be removed from the site and disposed of in accordance with applicable regulations.

4. The “Basemap and Utility Report GPS” file shows existing electrical utilities in different locations than the electrical plan sheets. Please verify which sheets show the correct locations and lengths.

Answer: Updated electrical plan sheets E-01 through E-03 included with this Addendum No. 2 identify the existing electrical facilities to be used for bidding and construction purposes. Bidders shall rely on the updated electrical plan sheets included with this addendum.

5. I didn’t see a bid bond form in the package; are we to use our own bid bond form?

Answer: The sample Performance Bond can be found on page 43, and the sample Payment Bond can be found on page 46 of the Bid Documents. The contractor can use any bid bond form issued by a surety company.

6. In the pavement joint plan sheets, there is a legend item for “Type J Thickened Edge Isolation Joint” that is not shown on the plan sheets. Please verify if an isolation joint will be required at all locations where new concrete meets existing concrete.

Answer: Type J Thickened Edge Isolation Joints are shown on the plans as a plain line.

Refer to Sheets PJ-01 and PJ-02. Type J Isolation Joints are required at all locations where new concrete meets existing concrete.

7. Please confirm that the existing PRC Lighting Controller is to remain and continue to control the new lighting circuit.

Answer: The existing PRC Lighting Controller is to remain and continue to control the new lighting circuit. Electrical plan sheets E-01 through E-03 have been updated and are included with this Addendum No. 2.

8. Sheet E-03 includes a panel schedule for “ELA” only. Also on Sheet E-03 is “The EXISTING PRC LIGHTING CONTROL DETAIL” indicating panel ELA circuit 21 does feed the PRC panel, but the existing lighting circuits appear to come from panel “EHA”.

Please provide the electrical characteristics of these circuits and if possible, provide the panel schedule for “EHA” Answer: The existing lighting circuits fed from panel “EHA” are not part of this project.

Electrical plan sheets E-01 through E-03 have been updated and are included with this Addendum No. 2.

9. Please confirm the existing and new lighting circuit is a parallel circuit and not a series lighting circuit.

Answer: The PRC lighting circuit is a parallel circuit.

10. Please confirm the voltage drop calculations used for the lighting were done on the correct circuit as they appear to be done with the circuit feeding the PRC (ELA-21) not the circuit or circuits feeding the lights. (EHA-7, EHA-2 & EHA-15).

Answer: The lighting circuits EHA-7, EHA-2, and EHA-15 are for other lights, which are not part of this project.

11. Details on Sheet E-03 show 3 lighting circuits: EHA-7, EHA-2 & EHA-15, but does not indicate which of these circuits pertain to the lighting in this project. Please clarify which circuit or circuits are to be demolished and replaced as part of this project.

Answer: The lighting circuits EHA-7, EHA-2, and EHA-15 are not part of this project.

The existing PRC Lighting Controller shall remain and continue to control the new lighting circuit. Electrical plan sheets E-01 through E-03 have been updated and are included with this Addendum No. 2.

12. Sheet E-02 appears to have conflicting direction. 1 note indicates we are to replace (3) #8 conductors with (3) #6 conductors, while further down a note directs us to splice the old circuit with the new circuit. Please clarify if we are to replace the existing conductors or splice to the existing conductors.

Answer: The existing conductors are to be replaced all the way from the source panel to the new lighting facilities. No splicing of the existing conductors will be required.

13. Sheet E-02 has 2 notes next to each other. The first says to install a “new electric hand hole” and the next note says, “install a new electric junction box”. Are these 2 different notes referring to a single new enclosure or are 2 separate enclosures required here?

Answer: The handhole and junction box refer to the same enclosure. Refer to Answer No. 1 and the updated Electrical Plan Sheets E-01 through E-03 included with this

14. For the electrical handhole or junction boxes required where we intercept the existing conduit, please confirm that these are L-867 or L-868 Junction boxes or indicate if a different style or size junction box is desired.

Answer: The required junction box shall be an L-868 Class 1 (load-bearing) junction box. Refer to Answer Nos. 1 and 13 and the updated Electrical Plan Sheets E-01 through E-03 included with this Addendum No. 2.

15. Where the junction box is required please clarify if L-868 Class 1 (Load Bearing) is required or will L-867 Class 1 (non-load bearing) be acceptable?

Answer: An L-868 Class 1 (load-bearing) junction box is required.

16. Please advise if a contractor can utilize the fire hydrants on site during construction?

Answer: The contractor will need to go to the water department and pull a temporary meter. Pay the necessary fees and the water department will bill the contractor accordingly.

17. Please reference plan sheet CS-01. This sheet states that “contractor shall provide job trailer. Location to be determined.” Please clarify if contractors are required to provide a job trailer for themselves, or the owner? If contractors are required to provide a job trailer for the owner, please provide specifications on the type of trailer and furnishings required.

Answer: The contractor is only required to provide a job trailer for themselves. The contractor is not required to provide a job trailer for the owner.

18. Please reference plan sheet CS-01. This sheet states that “contractor shall provide job trailer. Location to be determined.” Please clarify if contractors are required to move the trailer to a new location in each phase.

Answer: Yes, the contractor will be required to move their job trailer to new locations during each phase.

19. Please reference plan sheet CS-04. This sheet depicts work to occur in Phase 3. It appears that the main entrance/exit to the site from Hangar way is to be reconstructed.

Please clarify whether this entrance/exit will be closed to traffic during this stage, or if contractors will be required to leave the entrance/exit operational.

Answer: Yes, during Phase 3, the motorized gate that provides the main entrance/exit to the site will be closed. Plan Sheet CS-01 reflects that two (2) 35’ panels for a 70’ clear opening manual gate will be constructed at the southeast fence area that will provide ingress/egress during Phase 3 construction.

20. Please confirm that aggregate base can be used for the initial fill material for the MC- 7200 chamber system.

Answer: Yes, aggregate base is acceptable in the initial fill zone identified on sheet SD- 04.

21. Please confirm that native soil can be used for the final fill material for the MC-7200 chamber system.

Answer: Yes, native material may be used for the final fill zone identified on sheet SD- 04.

22. Please note that there are several references in the technical specifications to bid items and limits on bid items. Per the bid package, this is a lump sum bid. Please confirm that this project does not have any bid items.

Answer: The bid package requires the contractor to submit a lump sum bid. Provided below is the Bid List. All quantities shown on the plans or provided below are for reference only and it is the contractor’s responsibility to verify actual quantities and perform the work necessary to complete the project.

23. Please confirm that there are no alternates for this bid.

Answer: Confirmed. There are no alternate items for this bid.

24. Please reference technical specifications section 704.1.6. Subsection (B)(d) states to “Coordinate with building roof drainage systems.” Are there any roof drainage systems onsite that the owner intends to connect to the modular buried stormwater storage units?

Answer: No, all existing roof drainage systems will remain as is.

25. Please reference technical specifications section D-706 HDPE Storm Drain Pipe.

Subsection 706.5.1 Over Excavation states that “over-excavation shall be considered as included in the payment for Unclassified Excavation. This over-excavation subsection doesn’t seem applicable to the HDPE Storm Drain Pipe. Does the owner want the HDPE Storm Drain Pipe trench over-excavated? If so, to what depth?

Answer: No, the pipe trench does not need to be over-excavated beyond what is required for the bedding unless unsuitable material is found.

26. Please reference technical specifications section D-706 HDPE Storm Drain Pipe.

Subsection 706-7.1 Pipe Bedding states that “sand bedding shall be used in all pipe installations, except as noted in the Special Provision, to a minimum depth of six inches below the bottom of the pipe to the spring line…Bedding material shall be composed of imported materials with a sand equivalent of 30 or more, and free of silt, fines, vegetations, lumps and other deleterious materials.” Please confirm.

Answer: To be consistent with the trench installation detail on sheet SD-03, the bedding may be reduced to 4” and may consist of either Class I (crushed rock) or Class II (sand).

27. Please reference technical specifications section D-706 HDPE Storm Drain Pipe.

Subsection 706-8.1. Backfill states that “the backfill on the pipe zone section 12 inches above the top of pipe shall be with a minimum sand equivalent of 30 or greater in accordance with plan specifications.” The subsection also states “The backfill zone material shall have a sand equivalent of 20 or more.” Please clarify whether the minimum sand equivalency requirement for the backfill materials is 20 or 30.

Answer: To be consistent with the trench installation detail on sheet SD-03, the initial backfill zone stops 6 inches above the top of pipe. The preferred backfill material is Class I or Class II. If sand is used, then SE>30. The final backfill zone may utilize aggregate base or native material.

28. Please share any as-builts of existing utilities beneath the existing pavement section.

Answer: See attached:

o SBSD Aviation – Record Drawings.pdf.

29. After reviewing the geotechnical report, can the owner please share any test results of the existing soils sand equivalency?

Answer: Sand Equivalent (SE) testing was not performed as part of the limited geotechnical investigation.

30. Are there any test results on the existing aggregate base material? Is it CMB, CL II AB, P-209, P-219, etc….?

Answer: The Limited Geotechnical Investigation did not include testing to classify the existing base material under a specific designation (e.g., CMB, Class II AB, P-209, or P- 219). Therefore, no classification of the existing base material can be confirmed based on the investigation, however the as-built plans show Class 2 base.

31. Please reference technical specifications section P-209 Crushed Aggregate Base Course. This section refers to P-209 and also states that “the materials shall conform to the requirements of Caltrans 26 Aggregate Bases.” P-209 is a different material than

Caltrans spec base. Please clarify whether the owner is requiring P-209 or Caltrans spec base. If Caltrans base is required, which class of base is needed.

Answer: Crushed Aggregate Base materials shall conform to the requirements of Caltrans Section 26 Aggregate Bases in accordance with Item P-209, Paragraph 209-

2.1. The Contractor shall submit the proposed aggregate base material for review and approval prior to installation. Placement, spreading, compaction, testing, quality assurance, surface tolerance, and acceptance requirements shall be in accordance with Item P-209.

32. Will the owner allow the contractor to place and spread the aggregate base per contractor’s means and methods as long as they meet the compaction and surface tolerances as described in subsection 209-3.5 and 209-3.8?

Answer: Yes. The Contractor may utilize industry-standard means and methods for placement and spreading of the aggregate base material, provided the completed work complies with all applicable requirements of Item P-209, including compaction, grade, thickness, surface tolerance, testing, quality assurance, and acceptance requirements.

33. Please reference technical specifications section P-209 Crushed Aggregate Base Course. Subsection 209-3.9(a) states that “The Contractor’s laboratory shall perform all density tests…” Please confirm that contractors are responsible for quality assurance as it relates to aggregate base compaction.

Answer: Yes. The Contractor shall be responsible for providing all testing and quality assurance required by Item P-209. All testing shall demonstrate compliance with the compaction, material, and acceptance requirements specified in Item P-209.

34. Please reference the first page on BID Document specifications. Please confirm that all documents/plans/specifications in ePro are the correct set.

Answer: All documents/plans/specifications uploaded in ePro as of the date of this Addendum No. 2, are the correct set.

35. Please confirm anticipated NTP Date.

Answer: The project manager anticipates issuing a Notice to Proceed, and construction starting, within 10 calendar days following contract award.

36. Please confirm contract awarded date.

Answer: The anticipated date for award of the construction contract is October 20, 2026.

37. Please reference sheet CS-01, Phase 1A Construction Sequence Notes. Per note 4 contractor must construct gate per detail 5, sheet C-25. Please confirm that the detail provided is on sheet SS-04 detail 5. If not, please provide plan sheet C-25.

Answer: The referenced gate detail is provided on Sheet SS-04, Striping Details, Detail 5 – Dual 35' Manual Rolling Chain-Link Gate. The reference to Sheet C-25 is incorrect.

38. Please reference sheet DP-02, note F. Per note F the contractors must remove existing valley gutter. Please provide existing detail on the valley gutter.

Answer: Detail of the valley gutter can be found on the as-built drawings provided with this Addendum No. 2.

39. Please reference sheet DP-01, note E the contractor must remove the existing Curb and Gutter. Please provide existing detail on Curb and Gutter.

Answer: Detail of the curb and gutter can be found on the as-built drawings provided with this Addendum No. 2.

40. Will contractor need to provide escorting when importing and exporting material on and off the project?

Answer: Yes, the awarded contractor will need to escort their subcontractors, truck drivers and vendors. Sheriff will also assist with all escorts.

41. Please confirm that the gate called out to be installed per Detail 5 on page SS-04 is to be manually operated.

Answer: Yes, two (2) 35’ panels for a 70’ clean opening gate will be a manually operated gate.

42. Please provide the as-built elevations for the top of conduit per page E-02.

Answer: San Bernardino County does not have record information identifying the as-built elevations of the existing conduit. Bidders shall verify existing field conditions as necessary.

43. Is the existing conduit to be removed per page E-02 concrete encased?

Answer: San Bernardino County does not have record information confirming whether the existing conduit is concrete encased. Bidders shall base their bids on the information provided in the Contract Documents and verify existing field conditions as necessary.

44. The removal sheets only specify to remove the asphalt sections (ie., 4” AC, 5” AC, 12” PCC, etc) however, it does not call out for any existing base or dirt material below these sections to be removed. Is there any material below the AC and PCC that needs to be removed? If so, please clarify the type of material and at what depth it is to be removed.

Answer: Up to approximately 6 feet of existing artificial fill was encountered during the geotechnical investigation. The existing fill is believed to be the result of previous grading and construction activities at the site. The Contractor shall remove the existing pavement sections and any existing artificial fill to the proposed bottom of aggregate base elevation, as measured from the proposed finished grade elevations shown on the plans.

The project includes three pavement section types: (1) 6-inch PCC over 6-inch aggregate base, and 6 inches of compacted subgrade, (2) 6.5-inch PCC over 6-inch aggregate base and 12 inches of compacted subgrade, and (3) 12-inch PCC over 12-inch aggregate base and 12 inches of compacted subgrade. Prior to placement of aggregate base, the exposed subgrade shall be prepared and compacted in accordance with the Contract Documents for the applicable pavement section.

45. The grading plans in page GP-01, show a table displaying 6,534 CY of cut. Can you please specify the origin of this quantity? Is the new FS that the existing or is the quantity accounting for the material below the AC/PCC to make way for the new structural section?

Answer: As described in Answer No. 44, the cut quantity shown on Sheet GP-01 accounts for removal of the existing base material and dirt below the pavement necessary to construct the proposed pavement sections. The cut quantity is based on excavation to the required subgrade elevation needed to accommodate the proposed structural section shown on the plans.

46. Please provide existing grades to compare with those of finished surface.

Answer: Existing elevations are flagged around the entire perimeter of the site and existing one-foot contours are shown in gray on sheets GP-01 and GP-02. The existing grades across the project site generally conform to the proposed finished surface elevations. The proposed pavement improvements have been designed to tie into adjacent existing pavement and improvements along all project limits, resulting in minimal grade differentials between existing and proposed conditions. Minor localized variations in existing surface elevations may exist due to settlement, construction tolerances, and pavement wear; however, the proposed grading is intended to substantially match the existing surrounding grades while maintaining the drainage characteristics and pavement section requirements shown in the Contract Documents.

47. Is there any bid items for this job, or will it be just one LS item.

Answer: Answer Number 22 provides the bidders with the bid list that is provided for reference only. The bid package instructions require the bidders to submit a lump sum bid.

48. Please confirm that the documents posted within ePro are the ones to be used for bidding purposes.

Answer: Confirmed, the documents posted in ePro are the ones to be used for bidding purposes.

49. Please reference Detail 4 on Page SS-04. Is there a specific manufacturer required for the tie-downs?

Answer: No, a specific manufacturer is not required. The contract drawings identify the tie-down assembly as Neenah R-3490 or approved equal. Approved equal products shall be of equivalent size, configuration, durability, and load-carrying capability and shall be compatible with the installation requirements shown on the contract drawings.

The tie-down assembly shall be installed in accordance with the contract drawings, including anchoring with 20-inch-long No. 4 deformed bars through the pin holes.

50. Please reference Sheet E-01. Please provide the type of existing loop sensors that are to be replaced. Please provide the relevant specifications for loop sensor modifications.

Answer: Refer to Answer No. 1. The contractor shall provide manufacturer drawings showing the installation details for the loop sensors and related automatic gate operator components. Material and installation requirements are provided in the specifications under Item L-126, Automatic Gate Operator and Control

51. Is the bid bond due prior to bid time? If so, where is it due?

Answer: See Section F of the Instruction to Bidders.

The bid bond must be received on or before 10:00 a.m. on August 12, 2026. Bids shall be delivered to, or mailed postage prepaid to arrive at, the Project and Facilities Management Department – Project Management, 620 South E Street, San Bernardino, CA 92415-0184, on or before the time set for the opening of bids in the published Advertisement For Bids. All bids shall be enclosed in a sealed envelope bearing the title of the work, the name of the bidder, and clearly marked "Bid Proposal". Bids can also be submitted through San Bernardino County Electronic Procurement Network (ePro) ePro - /view/login.xhtml. All bidders must register with the ePro system prior to the date and time to receive sealed bids or they will be disqualified. System-related questions about ePro shall be directed to Vendor support at ePro.Vendor@pur.sbcounty.gov or at 1-909-387-2060. For procurement questions involving ePro, please contact the Purchasing Department at (909) 387-2060. NOTE: If sending the bid or bid bond to the Project and Facilities Management Department – Project Management in a mail envelope (i.e. Federal Express, etc.) please enclose the bid or bid bond inside the mail envelope in a separately sealed envelope bearing the title of the work, the name of the bidder, and marked “Bid Proposal or Bid Bond”. All mail, including Priority and Express Mail, sent via the U.S. Postal Service is received by the County's mail room then distributed to the Project and Facilities Management Department – Project Management. This can cause a delay in the receipt of bids or bid bonds. The County is not responsible for any delays caused by mail service to a different County location. It is Bidder’s responsibility to ensure bids and bid bonds are received at the Project and Facilities Management Department – Project Management, 620 South E Street, San Bernardino, 620 South E Street, San Bernardino, CA 92415-0184 on or before the time set for opening of bids.

52. What is the preferred delivery method for the Bid Bond?

Answer: Contractors can physically deliver or mail the bid bond to the Project and Facilities Management Department – Project Management 620 South E Street, San Bernardino, CA 92415-0184 or can submit the bid bond through ePro.

53. Are there any post bid document requirements? If so, when are these documents due?

Answer: No there are no post bid document requirements.

54. How will Bid Results be released post bid?

Answer: The bid results will be uploaded to the Project & Facilities Management webpage: https://pfm.sbcounty.gov/project-management/#bid-results .

55. Please reference the bid proposal page 5 of 9. This page states that “Contractor is required to obtain and submit certificates of reported compliance from all subcontractors that are listed in the bid submission. Failure to provide Contractor’s CARB compliance number may constitute a material irregularity rendering their bid non-responsive and https://pfm.sbcounty.gov/project-management/#bid-results https://pfm.sbcounty.gov/project-management/#bid-results non-responsible, and subject to rejection for non-responsiveness.” Are CARB certs due with the submission of the bid? Typically, agencies allow for this to be submitted post-bid so that general contractors can focus on providing them with the best price instead of gathering certifications. If San Bernardino County will accept CARB certifications post-bid, at which address should they be delivered and who should they be addressed to? Will they be due 3 business days after the bid date?

Answer: Yes, the signed Contractor Certification California Air Resources Board (CARB) In-Use-Off-Road Diesel Fueled Fleet Certification of Compliance will need to be included with the bid package due on August 12, 2026 by 10:00 a.m. The CARB certification is provided on page 25 of the Bid Documents. San Bernardino County will not accept the signed CARB certification post-bid.

56. Upon attending the mandatory job walk, we had noticed there are existing edge lights around the helicopter pad. Does San Bernardino County require general contractors to remove these edge lights during Pavement removals? If so, would San Bernardino like general contractors to salvage the existing edge lights and provide back, or, dispose of existing edge lights.

Answer: Refer to Answer No. 3. Existing edge lights that are removed as part of the work will not be reinstalled. All removed equipment shall become the contractor’s property and shall be removed from the site and disposed of in accordance with applicable regulations.

57. Please reference the technical specification section 501-4.2(b)(1) slip form. The specification states “The standard method of constructing concrete pavements shall be with an approved slip-form paving equipment.” Please confirm that slip-form paving is the only approved means and methos for concrete pavement construction with the exception of irregular areas. If no, please confirm that general contractors are allowed to use their preferred means and methos for all concrete pavement construction.

Answer: The Contractor may utilize other industry-standard paving methods, including slip-forming, and equipment, provided the completed work complies with all applicable requirements of Item P-501 and the Contract Documents. Regardless of the paving method selected, the Contractor shall provide adequate concrete consolidation, including the use of vibratory screeds, internal vibration, or other approved means necessary to achieve the required surface finish, smoothness, thickness, strength, and overall pavement quality outlined in Item P-501.

58. Please reference the technical specification section 501-3.1. The specification states “The Concrete Mix shall meet CALTRANS 40 Concrete Pavements requirements.”

Please confirm that all concrete material to be constructed on this project will conform to Caltrans section 40 requirements.

Answer: Concrete materials shall conform to the requirements of Caltrans Section 40 Concrete Pavement materials. The Contractor shall submit the proposed concrete mix design and supporting material information for review and approval prior to placement.

Concrete placement, consolidation, finishing, testing, quality assurance, smoothness, curing, acceptance, and all other construction requirements shall be in accordance with Item P-501 and the Contract Documents.

59. Please provide general contractors with a designated batch plant area per stage.

Answer: A batch plant will not be permitted within the project limits. The heliport will remain active throughout construction, and the required airspace clearances and safety areas must be maintained free and clear of obstructions, including batch plant operations.

Areas outside of the project limits may be available for a batch plant; however, it shall be the Contractor’s responsibility to identify, coordinate, obtain all necessary permissions, and secure any lease or rental agreements for such locations.

If the Contractor proposes to establish a batch plant in proximity to the airport, the Contractor shall coordinate with San Bernardino County and the San Bernardino International Airport Authority and shall be responsible for submitting FAA Form 7460-1 through the FAA OE/AAA portal for airspace evaluation and approval. Any required FAA review and approval shall be obtained prior to establishing the batch plant, and the Contractor should allow a minimum of 45 days for FAA processing and coordination.

60. Upon attending the mandatory job walk, we noticed a substantial amount of owner related equipment staged within the proposed work site. Please confirm that prior to construction that San Bernardino County will remove all existing cars, cargo containers, helicopters, planes, etc…from the active construction areas.

Answer: Sheriff will relocate all cars, cargo containers, helicopters and planes from the active construction areas when appropriate to ensure contractors can complete construction during each respective phase of the project.

61. Upon attending the mandatory job walk, we had noticed there are existing tie-downs around the helicopter pad. Does San Bernardino County require general contractors to remove these tie-downs during Pavement removals? If so, would San Bernardino County like general contractors to salvage the existing tie-downs and provide back, or, dispose of existing tie-downs?

Answer: Existing tie-downs found to be in excellent condition may be salvaged and reinstalled in the new pavement where feasible and in serviceable condition. Tie-downs that are damaged during removal, determined to be unsuitable for reinstallation, or cannot be salvaged shall be disposed of by the Contractor and replaced in kind.

62. Please reference plan sheet PJ-01. The legend on this plan sheet depicts a letter “R” and hatching to illustrate reinforced concrete pavement. Both pavement jointing plans call out for construction of reinforced concrete pavement, however, there is no detail provided regarding the type of reinforcement. Please provide details for the type of reinforcing bar required for the reinforced concrete pavement.

Answer: Reinforcement requirements for the reinforced concrete pavement are provided in the construction notes on Sheet PJ-03. Reinforcement shall consist of bar mats assembled using No. 4 reinforcing bars at 12-inch on center both ways. For pavement sections less than 9 inches thick, reinforcement shall be placed at mid-depth of the panel. For pavement sections greater than 9 inches thick, reinforcement shall be placed within the upper one-third of the panel. Bar mat lap splices and placement requirements shall be as specified in the Sheet PJ-03 notes. Refer to Sheet PJ-03 for complete reinforcement, placement, and detailing requirements.

63. Please confirm whether the controlling duration of the contract is 180 Calendar days or 180 Working days.

Answer: 180 calendar days.

64. Does the revised Contract completion date (July 2, 2027) include holidays?

Answer: Bidders shall not rely on the project manager’s projected construction start and construction completion dates. The contractor shall develop their own detailed construction schedule based on a 180-calendar day duration that shows dates and workflow details.

65. Please confirm the County’s anticipated Board award date, contract-execution date, preconstruction meeting date, and Notice to Proceed date. The mandatory bid-walk agenda references an anticipated October 20, 2026, Board action and an October 26, 2026, estimated construction start. Please also confirm whether the County anticipates requesting an extension of bid validity, as the Bid Documents state that bids remain valid for 60 days after the August 5, 2026, bid opening.

Answer: Subject to a potential protest or other unforeseen delay, the project manager anticipates submitting a Board Agenda Item recommending the Board of Supervisors award the construction contract to the lowest, responsive and responsible bidder on October 20, 2026. The project manager anticipates issuing a Notice to Proceed, conducting a preconstruction meeting, and construction starting within 10 days following contract award. Addendum No. 2 revises the bid validity requirement from sixty (60) days to ninety (90) days.

66. Please clarify what the authorized before-hours, after-hours, or weekend times are referenced in section 1.8 special conditions.

Answer: Addendum No. 2 revised the Special Conditions, Section 1.8 Noise.

67. Please clarify which noisy activities, if any, must be performed before-hours/after hours or on the weekends?

Answer: Addendum No. 2 revised the Special Conditions, Section 1.8 Noise.

68. What additional costs apply for inspection, sheriff coordination, Airport Authority Inspections or any Agency support necessary to perform work during this period.

Answer: The permit fees San Bernardino County paid to San Bernardino International Airport Authority covers San Bernardino International Airport Authority’s inspection fees.

The contractor will be responsible for paying for their own soils/geotechnical/material testing and inspections fees and for any temporary water fees if utilizing the onsite fire hydrants. There are no other additional costs for Project and Facilities Building Inspector or Sheriff coordination.

69. Are there any operational blackout periods, phase-duration limits, aircraft or Sheriff-access constraints, or other sequencing restrictions that bidders must incorporate into their construction schedule?

Answer: The construction plans reflect a phased construction project. There are no blackout periods, or phase-duration limits, or aircraft or Sheriff-access constraints or other sequencing restrictions that bidders must incorporate into their construction schedule. Sheriff’s working hours are 7 days a week from 6:00 a.m. to 2 a.m. and will allow contractors to work during these hours if they elect in order to ensure the project is completed in 180 calendar days.

70. Please confirm that any mandatory bid-walk agenda statement, correction, direction, or discussion item that modifies, supplements, or conflicts with the issued Contract Documents will be formally incorporated into the Contract Documents through a written Addendum before bid opening.

Answer: The Addendum provides updated or revised documentation. The contractors’ bid should be based solely on the information found in the bid documents, including Addendum No. 1 and Addendum No. 2. Contractors shall not rely on information provided by the project manager during any mandatory bid-walk agenda statements, corrections, directions or discussion items.

71. The agenda states that contractors will not be required to submit security- clearance applications. Special Conditions 1.25 and 1.28 state that background checks and Live- Scan clearances may be required at the discretion of the Sheriff’s Department. Please identify the controlling requirement and confirm whether any security-clearance, background-check, or Live-Scan requirement will apply to the contractor, subcontractors, suppliers, delivery personnel, and testing/inspection personnel.

Answer: Sheriff will not require contractors to complete Security & Background Checks and Live-Scan Clearance screening for this project. However, Sheriff reserves the right to require the Security & Background Checks and Live Scan Clearance, at their sole discretion, should the Project scope or circumstances change.

72. The agenda states that Sheriff would like the temporary gate to remain after construction, subject to Airport Authority approval. Please confirm whether the temporary gate is to remain temporary and be removed at completion, or whether the gate is to remain in place as a permanent improvement. If it is to remain, please issue revised scope, ownership, operational, warranty, electrical/control, access-control, and payment requirements.

Answer: The temporary manual gate will remain in place at the conclusion of the project.

73. Please identify each agenda discussion item that the County considers to be bidder obligation, construction requirement, or change to the project scope, schedule, sequencing, access, security, inspection or closeout requirements.

Answer: Bidders shall not rely on any agenda discussion items. All bids shall be based solely on what is stated in the bid documents, including Addendum No. 1 and

74. Please confirm whether the stated Contract Time includes the period required after contract award and/or Notice to Proceed for preconstruction activities, including the preconstruction meeting, baseline CPM schedule, submittal preparation and review, procurement, security/access processing, mobilization, and coordination with the Sheriff’s Department and San Bernardino International Airport Authority. Identify the county’s anticipated milestone dates for contract award, contract execution, Notice to Proceed.

Answer: The Contract Time of 180 calendar days is the allotted time for the entire project.

75. For purposes of bidding, procurement, construction planning, and submittal preparation, confirm that the Contractor may utilize Materials, construction means and methods, equipment, sequencing, and compaction procedures consistent with Caltrans Section 26, Item P-209, or a combination thereof, provided that the completed aggregate base course satisfies all specified material, density, thickness, grade, and tolerance requirements.

Answer: Yes. The Contractor may utilize industry-standard materials, equipment, sequencing, compaction procedures, and construction means and methods, provided the aggregate base material conforms to the requirements of Caltrans Section 26 and the completed work complies with all applicable requirements of Item P-209, including compaction, thickness, grade, surface tolerance, testing, quality assurance, and acceptance requirements.

76. Please confirm that locally available Southern California PCC materials conforming to applicable Caltrans Section 40 requirements are acceptable, subject to all Contract Document requirements, and confirm that Contractor-selected PCC paving procedures consistent with Caltrans Section 40 and Item P-501, or a combination thereof, would be acceptable based on completed-work acceptance.

Answer: Yes. The Contractor may utilize locally available Southern California PCC materials, provided the materials conform to the requirements of Caltrans Section 40 and all applicable Contract Document requirements. The Contractor may also utilize industry-standard paving procedures, equipment, sequencing, and construction means and methods, provided the completed work complies with all applicable requirements of Item P-501, including concrete quality, placement, consolidation, smoothness, thickness, curing, testing, quality assurance, and acceptance requirements.

77. Per the contract documents, bids may be submitted in person or electronically. Can the Agency provide a video link for the bid opening so that Contractors who submit electronic bids can join?

Answer: See Section M of the Instructions to Bidders.

https://teams.microsoft.com/meet/238376220766303?p=1I8ZPZJz9Xa2FZNMRK

78. Per the contract documents, bids may be submitted electronically. The ePro website does not appear to have a spot to upload and submit a bid. How should Contractors submit electronic bids?

Answer: Bidders can reach out to the San Bernardino County’s Purchasing Department at epro.vendor@pur.sbcounty.gov for assistance on registering or uploading bids into ePro. Bidders can also find this information in Section F of the Instructions to Bidders.

79. Please reference plan sheet E-02. Currently, the in-pavement edge lights are illustrated as a black dot along the dashed line of the helicopter pad. However, there are also black dots illustrated along the bold black line inside the dashed line. These are not called out for in-pavement edge light installation. We are seeing a total of 32 in pavement edge lights, as illustrated on the drawings. Please confirm or clarify quantity to be installed.

Answer: Based on the quantities provided for reference only, the requirements of Item L-125, and the in-pavement edge lights identified by the black dots shown on the plans, the project includes a total of thirty-two (32) in-pavement edge lights.

80. County can you please confirm that the available plans & specs on the County bid website are the final version? There is a note in the bid documents to obtain the final plans and specifications from the department instead of the board’s website.

Answer: The final version of the plans and specifications are uploaded in ePro.

81. Is there a list of the bid schedule items? I’m not able to locate them in the bid documents. Please advise?

Answer: Answer 22 provides the bid list.

End of Addendum No. 2

Jon Aldana, Interim Chief of Project Management Project and Facilities Management Department

EB:SA

San Bernardino County Project and Facilities Management Department 620 S E Street San Bernardino, CA 92415-0180 www.sbcounty.gov/ae

DATE: August 6, 2026

Jon Aldana (Aug 6, 2026 17:39:58 PDT) mailto:epro.vendor@pur.sbcounty.gov http://www.sbcounty.gov/ae mailto:epro.vendor@pur.sbcounty.gov http://www.sbcounty.gov/ae

10.10.1932-SHR Aviation Flight Line Pavement Replacement-Addendum No. 2-Narrative Final Audit Report 2026-08-07

Created: 2026-08-07

By: Sylvia Angulo (Sylvia.Angulo@pfm.sbcounty.gov)

Status: Signed

Transaction ID: CBJCHBCAABAAvQqS_4dOriul0Qc_JmghyONlT6ScTsWP

"10.10.1932-SHR Aviation Flight Line Pavement Replacement-A ddendum No. 2-Narrative" History

Document created by Sylvia Angulo (Sylvia.Angulo@pfm.sbcounty.gov)

2026-08-07 - 0:30:50 AM GMT

Document emailed to Jon Aldana (jon.aldana@pfm.sbcounty.gov) for signature

2026-08-07 - 0:30:55 AM GMT

Email viewed by Jon Aldana (jon.aldana@pfm.sbcounty.gov)

2026-08-07 - 0:39:22 AM GMT

Document e-signed by Jon Aldana (jon.aldana@pfm.sbcounty.gov) Signature Date: 2026-08-07 - 0:39:58 AM GMT - Time Source: server - Signature Appearance Selected: MOBILE_DRAW

Agreement completed.

2026-08-07 - 0:39:58 AM GMT