DTMB-0414 (Rev 6/25)

DEPARTMENT OF TECHNOLOGY, MANAGEMENT AND

BUDGET

State Facilities Administration Design & Construction Division

CONSTRUCTION BID ADDENDUM NO. 3

This form identifies an Addendum to Bidding Documents, and incorporates interpretations or clarifications, modifications, acceptance of proposed “or equal” materials, and other information into the Bidding Documents. Addenda will be numbered by the Professional and distributed through www.michigan.gov/SIGMAVSS as an attachment.

TO:

ALL BIDDERS

DATE ISSUED

7/16/2026

PROJECT NAME

Bishop Airport Landfill (Site ID #25000453)

FILE NUMBER

761/25250.SAR

PROFESSIONAL

DLZ Michigan, Inc.

PROJECT DIRECTOR

Project Director

BID OPENING DATE:

7/22/2026

ADDENDUM ITEMS:

1. Bidder questions and answers (below)

2. Attachment 1: Revised Drawing Sheet 6

3. Attachment 2: Well Detail

4. Attachment 3: Revised Bid Schedule

5. Attachment 4: Revised Section 01270

6. Attachment 5: SESC Symbol Key

7. Attachment 6: Work Area Relative to Runway/Taxiway

8. Clarification for Contract Item 15b: The number of monitoring wells to be installed has been corrected from 48 to 24 wells – see Attachment 3 for a revised Bid Schedule.

Questions and Answers Q1: Do you have a specific spec for the geo that will be going under the rip rap and the other stone? Is the 4” perforated going to be the rolled single wall or will it need to be dual wall corrugated?

A1: Refer to Section 910.03(B) of the MDOT 2012 Standard Specifications for Construction.

Q2: Could you email me drawings and plan details for the Flint Bishop Landfill project?

A2: Drawings and details are available via Sigma.

Q3: I am having a hard time finding information for the drainage layer and the venting gas collection layer. Is the only special requirement for this sand that it has to have a hydraulic conductivity of 1x10 -3 cm/sec or greater? Is there a class it needs to meet, class II, 2ns. If that is somewhere in the specifications, could you please direct me to where the information is.

A3: There is no specification other than the minimum hydraulic conductivity.

Q4: What are the requirements for the temporary truck wash pad, the temporary truck wash pad with the decontamination pad?

A4: The intent for the wash pads is to assure that no contaminated materials leave the work site.

At a minimum, the Contractor shall provide wheel and under carriage wash using high-pressure water or steam. The rinse waters shall be collected, stored, sampled, and properly disposed of.

There are no other specific requirements for the wash pads. Refer to Section 2130.

Q5: On the SESC plan, there are 12" culverts called out, is there a certain pipe type you want? For the 24" RCP pipe on that sheet that is called out, does it need any special add mixtures or to be certain RCP class?

A5: MDOT Class II

Q6: On sheet 13 note 8, am I reading this correctly that I have to maintain the grass for 1 year after the job is done? Is this just mowing? How often will I need to maintain it?

A6: Assume monthly for bidding purposes.

Q7: On sheet 14, can you provide a scale? The scale box says "as shown," but no scale is shown.

A7: The vertical and horizontal scales of the detail sections can be determined based on the vertical and horizontal scales on the details. The Ingress/Egress Plan scale is approximately 1inch = 620 feet.

Q8: I was under the impression that there was only one new culvert? See below.

A8: The drawing is correct; there are two culverts side by side.

Q9: Should there be additional temp road to connect to the work area?

A9: The contractor may build additional temporary roads as they see fit in order to complete the work. Any costs associated with additional roads shall be included in the site services line item.

Q10: I am a little confused by the subgrade plan and the final contour plan. The contours on both seem to match. Shouldn't the subgrade plane be roughly 3.5' lower than the final contours plan? Or am I missing something?

A10: Correct, the subgrade plane should be 3.5 feet lower than the final contours. A revised subgrade plane drawing in included as Attachment 1.

Q11: Can you please provide a detail for the proposed monitoring wells? The plans do not currently show a detail for the monitoring wells.

A11: A typical monitoring well detail is included as Attachment 2.

Q12: Can you please clarify the material differences between “General Fill”, “Structural Fill”, and “Granular Material”? The specifications seem to indicate that all three materials will need to be MDOT Class IIA/IIAA.

A12: General fill is specified in Section 5.7 of the CQC/CQA and structural fill is specified in Section 5.3 of the CQC/CQA. These are MDOT Class IIA. Granular fill is specified in Section 5.4 of the CQC/CQA. The only required is a hydraulic conductivity of 10^-3 cm/s; no specific MDOT gradation is specified.

Q13: Can you please provide additional detail/drawings of the 4” cap drain location and passive venting system for Bishop LF? According to the drawings there is only 600 LF + 1,400 LF of cap drain along north and east sides. For the passive venting it appears they are plumbed together via 6” corrugated pipe but want to confirm.

A13: Correct, there is 2,000 LF (total) of 4” cap drain. The passive vents are not plumbed together.

The 6” corrugated HDPE piping extends 100’ from the gas well to north, south, east, and west.

Each 100’ length of piping will be capped at the ends. Refer to detail 4 on Sheet 12 of the Drawings.

Q14: Also, I assume this is graded so the leachate naturally drains to the manhole located at NE side of site? (just want to make sure were not missing something).

A15: Correct.

Q15: Can you clarify the months that the tree clearing for this project can be done and confirm that the trees can be mulched and left on site?

A15: Tree grubbing and clearing must be completed from October 1 through April 14. Cleared and grubbed vegetation that exceeds two inches in diameter shall be processed into wood chips on-site at a location approved by the Engineer. See Section 5.2.2.4(E) in the CQC/CQA Plan for additional information.

Q16: For disposal purposes, are we to assume the leachate can be disposed of as a non-hazardous waste?

A16: Yes.

Q17: Is there any PFAS analysis data available on the leachate? If not, should we assume PFAS is not present for disposal purposes?

A17: Yes, the lab report including leachate PFAS sampling was inadvertently omitted from the specification package. The PFAS sampling results were included in Addendum 2.

Q18: If we are to assume PFAS is present, is there an approximation of what PFAS compounds could be expected and what their approximate concentration is?

A18: The PFAS sampling results were included in Addendum 2.

Q19: We are reviewing the project docs to provide a quote for the CQC officer portion of this project to a contractor and we had a quick question for you:

In the CQC/CQA plan, the requirements for the CQC Officer include being a licensed professional engineer. The responsibilities of the CQC Officer include being on-site during various construction operations. Does the individual on-site need to be the PE, or may it be an individual operating under their license and direct supervision?

A19: The on-site individual may be a person working under the direct supervision of a licensed

PE.

Q20: Will a permit be issued for use of a crane to set and remove the culverts in drain crossing?

A20: The Contractor will be required to obtain their own permit for crane use, if required.

Q21: Will burying the clear and grubbing materials be allowed on site?

A21: Cleared and grubbed vegetation less than 2 inches in diameter shall be placed on the top of the former landfill within the cap limits, at a minimum depth of 9 inches below the base elevation of the landfill cap. Cleared and grubbed vegetation exceeding 2 inches in diameter shall be processed into wood chips not exceeding 4 inches in length. Process wood chips shall be used as cover material and shall be placed over areas where exposed solid waste has been excavated and/or placed. Refer to the CQC/CQA Plan, Section 5.2.2.4.

Q22: Will a Flight Survey be permitted or will all surveying need to be from ground level?

A22: Flight surveys will be acceptable. Contractor will be responsible for coordinating airport and FAA personnel for any flights.

Q23: Can you please clarify if rip rap will be required at the southern inlet of each of the 12” road crossing culverts shown on sheet 13 of the plans? The plans show rip rap on the north outlet of each culvert but does not show rip rap at the southern inlet.

A23: Rip rap will be required at the southern inlet of each of the road crossing culverts.

Q24: Is the 100’ X 100’ pad of 12” thick 22A aggregate for the frac tank included in the MDOT 22A Aggregate pay item or should the cost to install this pad be included in the pay item “Operation and Maintenance Of Leachate Collection System”? Will this pad need to be removed at the end of the O&M period along with the removal of the frac tank?

A24: Include the cost of the frac tank pad MDOT 22A aggregate pay item. The pad may remain in place following the O&M period.

Q25: Please advise where the cost to abandon the existing monitoring wells should be included as there is no pay item for monitoring well abandonment and it is not described in the measurement and payment section of any other pay items.

A25: Payment for monitoring well abandonment shall be made under Contract Item 2.

Q26: I am looking at quoting the asphalt paving on the Bishop project but I can’t find anywhere that is specifies the asphalt liquid grade.

Can you help me out?

A26: A liquid grade was not specified. Contractor shall use the most appropriate product to assure asphalt work is completed to MDOT specifications.

Q27: When is the expected contract award and notice to proceed that we should based the schedule and timing of the project? 365 days from that date will include non-workable days due to winter.

A27: DLZ anticipates that the contract will be awarded in late summer or early fall 2026. The Notice to Proceed date will be determined during post award meetings. Project duration will be

365 calendar days from the Notice to Proceed date.

Q28: Are there any special requirements due to proximity to the airport? Badging, background checks, equipment modifications?

A28: Special requirements are listed below:

• The Contractor shall add Bishop International Airport Authority, Genesee County, the City of Flint, their directors, officers, agents, elected officials, and employees as additional insureds on their insurance policy.

• At least one individual will need to be badged and provide escort for the fencing crew installing the temporary fence until approved by airport Public Safety.

• Although not specifically required, airport personnel recommend that equipment be equipped with a 3ft x 3ft checkered pattern orange and white flag.

Q29: Spec 02315 section 2.01.G and 2.01.H define two types of granular material. Is the material for bid form item 7b (Granular Material) to be MDOT Class IIA or class IIAA?

A29: The item 7b granular material may be either MDOT Class IIA or Class IIAA material.

Q30: Is the 6a Aggregate to be a crushed limestone product?

A30: The 6A aggregate may be any material meeting the MDOT 6A aggregate specification.

Q31: Spec 02315 section 2.01.B states that the material needs to be 2” minus but also that class IIA or class IIAA are acceptable. Class IIA and class IIAA could contain up to but not including 3”. Would that still be acceptable? The MDOT spec shows 100% passing the 3” and 60-100% passing the 1”.

A31: Yes, Class IIA and IIAA are acceptable materials.

Q32: Measurement and Payment Questions (Spec 01270 section 1.05)

a. Contract Item No 11: MDOT Plain Rip Rap (Square Yard)

i. This item states that payment would be made by weight but the title and bid form show by the SY. Please confirm which is correct?

b. Contract Item No 11a: 1”x3” Crushed Stone (Square Yard)

i. This item states that payment would be made by weight but the title and bid form show by the SY. Please confirm which is correct?

c. Contract Item No 13: Geosynthetic Clay Liner (Square feet)

i. Will this be measure based on 3D measurements, 2D plan measurements or in place field measurements?

A32: Contract Items 11 and 11a shall be paid based on weight. A revised bid schedule and Section 1270 are included as Attachments 3 and 4, respectively. Contract Item No. 13 will be paid based on in place field measurements.

Q33: Sheet 13 shows numbers on the plan view but there is no key. Can that key be provided?

A33: The numbers refer to Soil Erosion and Sediment Control Measures identified in the MDOT 2012 Standard Specifications for Construction. A copy of the key has been included as Attachment 5.

Q34: Where is the Plain Rip Rap and 1x3 stone? Can a plan view be provided showing the locations for both? Sheet 13 shows some but only about 4,440 SYs and calls it out as riprap.

A34: Plain riprap will be placed along the toe of the landfill slope along the north and east side of the landfill and 1x3 stone will be placed along the south and west side of the landfill.

Q35: Can you depict the expected tree clearing limits on the drawings, separate from the vegetative clearing limits.

A35: Clearing and grubbing only needs to be completed where necessary to complete the work.

Generally, tree clearing will be required along the north and eastern edges of the landfill cap area.

Q36: When clearing trees; do we need to pull the stumps; or can they be ground in place (below grade)?

A36: Stumps, roots, and nonperishable solid objects located within the landfill boundary which are a minimum of 9 inches below the base elevation of the landfill cap may be left in place, provided they are as flush as possible. Also see Section 5.2.2.4(F) in the CQC/CQA Plan.

Q37: Can you please provide a cross section of what we should expect to find on the existing landfill cap: Thickness of topsoil, thickness of cover over waste, etc.

A37: Cross sections and soil boring logs are provided in historic site reports. Please refer to Appendix V of the bid specification package.

Q38: Stripping of existing topsoil: If free of waste, can we reuse the topsoil as 6” topsoil layer on the new cap; or does this stripped material need to be used in the grading/cut/fill process?

A38: For bidding purposes assume that existing topsoil may not be reused as the topsoil layer of the new cap but may be used in the grading/cut/fill process.

Q39: Where on-site do we place the tree chippings, stumps, brush and vegetation? Will it be stockpiled separately; or incorporated into the grading/cut/fill process?

A39: See response to Q21.

Q40: Will the Engineer (DLZ) provide the stamped drawings required for the SESC Permit?

A40: No.

Q41: Besides the SESC Permits, what other permits are anticipated to be provided by the bidder?

A41: The Owner/Professional will obtain a Joint Permit for work along Swartz Creek and the temporary Hewitt Drain crossing. The Professional will also coordinate with the Genesee County Road Commission regarding traffic and the CN railroad regarding work along their ROW. The Contractor will be responsible for all other permits that may be required.

Q42: There doesn’t seem to be a Demo Bid Item, what item(s) do we put the following costs:

• Existing Asphalt Road Removal?

• Disposal of material from Asphalt Road; or does it stay on-site?

• Monitoring Well Abandonment?

A42: Removal of the existing asphalt road will be paid under Contract Item No. 5. Incorporate the asphalt into the cut and fill process; no asphalt is to leave the site. Monitoring well abandonment shall be paid under Contract Item No. 2.

Q43: Is the Temporary Road and/or Drainage Ditch located within the limits of the grading;

or is it outside (South) of the grading limits?

A43: The temporary road is located south of the grading limits. The drainage ditch to the south is included in the work.

Q44: Can you please show the Runway and Taxiway on the drawings, so we can see how close we will be working to both of these, while Ditching, Installing/Removing the Temporary Road & Fence, Installing the Permanent Fence, etc.?

A44: See Attachment 6 for an aerial photograph of the work area showing the end of the runway.

Q45: Are there any tasks that will require a Runway and/or Taxiway Closure, such as:

• Installing the Temporary Road?

• Installing the Ditching along the Temporary Road?

• Installing and/or Removing the Temporary Fence?

• Installing the Permanent Fence?

• Are there any other tasks?

A45: Runway and/or taxiway closures are not anticipated; however, the Contractor shall coordinate with the Professional and airport personnel regarding schedule and equipment requirements. If required, runway/taxiway closures will be dealt with on a case-by-case basis via change order if necessary.

Q46: If a Runway Closure is not required, are there any other special considerations that might limit the Contractors’ productivity, while working so close to the Runway/Taxiway?

A46: The Contractor shall coordinate with the Professional and airport personnel regarding schedule and equipment requirements.

Q47: Can you please show any anticipated Airport Specific Signage, Barricading, Closure Types, etc. on the drawings, along with conditions on when they need to be utilized.

A47: No specific signage, barricading, etc. are required. See answer to question 28 for additional information regarding airport requirements.

Q48: Will any of the following be required; and if so, for what tasks/duration:

• Badging

• Vehicle Inspections

• Radio Training

• Escorting (By Contractor or by Airport)

• Special Vehicle Flags, Lights, etc.

• Any other Training

• Contractor Supplied Security Guard

A48: See answer to question 28 for airport requirements.

Q49: If Badging, Radio Training, Vehicle Inspections are required:

• will there be any cost to the contractor…if so, how much

A49: These costs are not anticipated.

Q50: Grading

• If we encounter large items that cannot be readily graded, how will that be handled?

• Do you anticipate the contractor encountering and areas of asbestos; or other hazardous materials? If encountered, how will this be handled?

A50: Large items that cannot be readily graded will be dealt with on a case-by-case basis via change order. Hazardous waste materials are not anticipated. See Sections 01121 and 02110 of the bid specifications and the CQC/CQA, Section 5.2.2.4(C) for procedures relating to the discovery of hazardous waste.

Q51: M&P Item #2 references Odor Control – what are the requirements

• Do we simply need to cover all waste at the end of the day?

• Do we need to have Odor Control Blowers & Neutralizers on-site at all times?

• Do we need to have Odor Control Blowers & Neutralizers on-standby, in case the odors get too bad?

• How would we get paid for the various levels of odor control? Blower rentals and neutralizing agents will be a significant cost, if needed. Can a separate bid item be setup for Odor Control, if Blowers and Neutralizers are required? Suggest a Monthly

Unit Rate.

A51: At a minimum, exposed waste, if any, should be covered at the end of each day. It is not anticipated that odor control blowers and neutralizers will be required. Situations requiring active odor control will be addressed on a case-by-case basis and may involve accessing the Provisionary Allowance if necessary.

Q52: M&P Item 2 references Air Monitoring

• What are the equipment requirements for Air Monitoring?

• Will the contractor perform the Air Monitoring; or will a 3rd Party Monitoring be required?

• What are the reporting/documentation requirements for Air Monitoring?

A52: Refer to Section 1575 for air monitoring requirements.

Q53: Stockpiling Import Material

• Is there a designated area for stockpiling import material?

• What are the height requirements for the stockpile(s) in the designated stockpile area(s)?

A53: DLZ anticipates that soils will be stockpiled in the area immediately east of the temporary Hewitt Drain crossing; however, the Contractor shall coordinate with airport personnel regarding the best stockpile location(s), as well as stockpile height.

Q54: Sheet 13 – Could you please provide the Legend that correlates to the numbers, cross hatching, etc. shown on the drawings?

A54: See Attachment 5.

Q55: Item 21 – If the contractor completes the work in say 10 months, do we still need to operate the leachate collection for the full 12 months?

A55: Assume yes for bidding purposes.

Q56: Item 22 – Can you provide the most recent analysis completed on the Leachate, so we can get a baseline price on disposal?

A56: Additional sampling results were included in Addendum 2.

Q57: Item 23 – Will we need to provide the CMP Culvert with Full Invert Metal Floor Plate; or will the water flow directly over the stone?

A57: Assume full invert metal floor plate.

Q58: Water for Dust Control, Truck Wash, etc. – What are our options for obtaining water.

• Hydrant along the road?

• Submersible pump in the creek?

A58: There are no on-site water sources other than Hewitt Drain and Swartz Creek. The Professional has no opinion as to the best water source. A fire hydrant or the on-site waterways are potential sources of water. Any permits, such as a hydrant use permit or groundwater withdrawal permit, that may be required will be responsibility of the Contractor.

Q59: Truck Wash – There are two truck washes shown on the project. Do we need to run all trucks through both truck washes? If not, what are the requirements for when we need to run through the Decontamination Truck Wash? Is the Decontamination Truck Wash only for the Heavy Construction Equipment?

A59: See answer to Q4.

Q60: Do subcontractors need to be MODT Certified? Or is prevailing wage the only requirement?

A60: Unless otherwise stated in the specifications, subcontractors do not need to be MDOT certified.

Q61: Temporary Road Removal - What is the plan for the stone we remove from the Temporary Road.

• Does the stone materials stay on-site?

• Do we dispose of off-site?

A61: It is anticipated that the stone for the temporary road will remain on site, to be covered with 4” of topsoil and seeded.

Q62: Do we have a stockpile location?

A62: See answer to Q53.

Q63: Section 02117, Part 1, 1.01 Item A – Please provide details for the “Installation of manhole, piping, vavles, pumps, controls, power (solar), telemetry, alarms and all necessary appurtenances to provide a complete pumping system.

A63: The pumping system components are specified in Section 02117, Part 2, Item A. A detail drawing of the manhole and components is included on sheet 13 of the drawings.

Q64: Section 02117, Part 1, 1.01 Item A states that Frac Tank volume must be a minimum of 21,000 gallons but elsewhere states 15,000 gallons. Will a vessel with a nominal capacity of 20,000 gallons be sufficient?

A64: Assume 21,000 gallons for bidding purposes.

Q65: Upon completion of the O&M period for leachate management, the Contractor will be required to return the Frac Tank. Please clarify the quantity and where the costs for cleaning the Frac Tank and disposal of accumulated solids shall be included?

A65: Include tank cleaning costs in the site services line item. Contractor shall complete any sampling/testing required by the disposal facility(s). The quantity of liquids/solids to be disposed is not known at this time.

Q66: Section 02117, Part 1, 1.01 Item C states “testing of the new leachate piping system”.

Please provide or clarify of what the testing shall consist.

A66: A pressure test of the piping associated with the pumping system will be required (see Section 02117, 3.02. Generally, testing will also be required to verify that system components are installed and working properly. This includes, but is not limited to, checking motor rotation, testing and verifying that floats/sensors/controls are functioning correctly (pump turns on and off at appropriate water levels, etc.).

Q67: Section 02117, Part 2, Item A – Please provide the referenced details for the “complete pumping system in the manhole, as shown of the Drawings”. [which it is not shown on the drawings].

A67: See answer to Q63.

Q68: Please clarify if the 100,000 gallons of leachate are presumed to be generated at the same monthly rate, for bidding purposes.

A68: For bidding purposes, assume 100,000 gallons of leachate will be collected and properly disposed over the life of the project.

Q69: Please provide analytical reports for the leachate to allow bidders to accurately characterize the waste and obtain pricing for hauling and disposal. If analytical reports are not available for the leachate, please identify an appropriate waste characterization that will allow bidders obtain pricing for hauling and disposal.

A69: Additional sampling results were included in Addendum 2.

Q70: Please provide details for the solar panels, support systems and foundations.

A70: Install solar panels and associated systems per manufacturer recommendations/specifications.

Q71: Reference is made to “Major components shall be constructed of stainless steel…” Please specify the grade of stainless steel required.

A71: 316 stainless steel.

Q72: A reference to “The system shall include a check valves near the pump…” Please specify materials of construction and rating required for the check valve.

A72: Refer to Section 2117(2)(B) for check valve specifications.

Q73: A reference to the atmosphere in the leachate collection manhole is “considered an explosive environment”. Please specify the Class, Group and Division for all equipment located in the manhole. Additionally, please provide details and specifications for conduits and associated components (seal-offs, pull boxes, etc) to be utilized with the leachate system.

A73: Assume the atmosphere within the leachate collection manhole will be a Class 1 Division 1 Group D environment. All associated electrical components shall be rated and installed accordingly.

Q74: A reference to the Breakout Box rated at NEMA 4X and is also specified as “non-metallic”. Please specify manufacturer(s) that provide such equipment.

A74: Non-metallic NEMA 4X enclosures are available from McMaster-Carr, Home Depot, and others.

Q75: Section 02117, Part 3, 3.01 (D) indicates, “Bedding, sub-bedding, and other trench conditions shall be carefully inspected prior to laying pipe or manhole…” Please provide details and specifications for bedding and sub-bedding to be used in these areas.

A75: Use structural fill as bedding and backfill for pipe. Use 1x3 stone for manhole bedding and structural fill for manhole backfill.

Q76: Section 02120, Part 1, 1.04 (D) (3) states “Deliver written weigh scale receipts and manifests…” regarding waste [including leachate] disposal. The liquid waste disposal industry typically does not use weights, but rather volume [gallons] for liquid waste disposal. Please clarify whether liquid volumes, corresponding to manifests, will be acceptable for liquid waste disposal.

A76: Liquid volumes are acceptable for manifests associated with liquid waste disposal.

Q77: Can you please confirm the site security requirements, will lein checks be required?

What is the on site security procedure? Will there be staff check-ins each time entering the site. What will be required of subcontractors in terms of site security?

A77: See answer to question 28.

Q78: Can you please confirm what will be required for dust control(dust boss?)

A78: The Contractor will be responsible for maintaining compliance with the bid specifications in regard to dust control. The Professional has no preference as to means or methods to be used by the Contractor in maintaining compliance. Refer to Section 01400 and 01575 of the bid specifications, as well as the CQC/CQA Plan for dust control requirements.

Q79: Will we be operating in the AOA? Will advanced scheduling be required in regards to air traffic and airport traffic?

A79: No work will be completed in the AOA. The Contractor shall coordinate with airport personnel regarding advanced scheduling regarding airport traffic.

Q80: Can you verify the compaction requirements for the granular drainage layer? What % of the modified proctor will be required?

A80: There are no proctor requirements. See CQC/CQA Section 5.4.2.3(D) for drainage layer compaction specifications and CQC/CQA Section 5.2.2.4 for subgrade compaction specifications.

Q81: Just wanted to get some clarification on the asphalt item if we could.

The plans are labeled as using P-411 Bituminous MDOT 3C base and MDOT 4C wearing.

The specification of 02750 Asphalt paving section 2.2 references MDOT standard specs.

The P-411 is the FAA spec, which is entirely different than MDOT. FAA spec has you putting down a test strip in the field, much more intense density / coring requirements and it’s a percent within limit spec for the material.

Question is can we assume that they are looking for MDOT Local Agency specs as opposed to the FAA spec?

A81: Assume MDOT spec.

Q82: Who is responsible for grading to ensure the fence is no higher than 1" off the ground?

A82: The Contractor will be responsible for grading.

Q83: Who is providing the concrete barriers on which the temp fence will be installed?

A83: The concrete barriers will be provided by the Contractor.

Q84: Who is installing the wildlife deterrent fabric?

A84: The Contractor will be responsible for installing wildlife deterrent fabric.

Q85: Is there a spec sheet for the chain link on this project? For both temporary and permanent fencing?

A85: Refer to Section 1560 and Appendix VII of the bid specification package for details regarding fences.

Q86: The subgrade and final grade sheets appear to show the same grades. Can a revised drawing be provided?

A86: A revised drawing is included as Attachment 1.

Q87: Drawing says 15,000 gallon Frac Tank, Specifications say 21,000 gallon frac tank.

Please clarify.

A87: Assume 21,000 gallons for bidding purposes

Q88: Please clarify the total quantity and method of abandonment for the monitoring wells as well as what bid item to include this pricing.

A88: For bidding purposes assume 7 monitoring wells will be abandoned. Refer to Section 02320 of specifications for details regarding abandonment methods.

Q89: Please specify the detail required for the temporary and permanent fencing.

A89: See Appendix VII of the bid specification package for fence details.

Q90: Can bid item 10: topsoil be changed to a quantity of SY with a specific depth defined in the bid item? Not all topsoil sources will have scales.

A90: Tonnage is preferred as it is field trackable and quantifiable.

Q91: The CQA_CQC Plan mentions several reporting requirements that must be completed via a third party Professional Engineer. Please confirm this will be required and contractor project personnel will not be sufficient.

A91: The third-party Professional Engineer will be required.

Q92: Is a loader scale acceptable in lieu of a state certified scale?

A92: A certified scale will be required.

Q93: Appendix 11 states it will be supplied in an addendum, can this please be provided?

A93: Permits will be provided upon issuance and receipt by the Owner/Professional.

Q94: During the prebid, it was discussed encountering leachate during earthmoving/ grading is not expected. Please confirm this would be handled under a change order if encountered?

A94: Correct. Leachate, if encountered during grading work, will be handled individually on a case-by-case basis and will be paid through the provisionary allowance or contract change order.

Q95: The specifications state that it is not expected to encounter/unearth any hazardous materials. Please confirm this would be handled under a change order if encountered/ unearthed?

A95: Correct. If encountered, hazardous waste material will be handled on a case-by-case basis and will be paid through the provisionary allowance or a contract change order.

Q96: During the prebid it was communicated that the contractor should assume hazardous materials will not be encountered. Does this mean the contractor should assume the wash stations will not need to be utilized?

A96: Although hazardous materials are not expected, the Contractor will still be expected to minimize track out of site materials.

Q97: Similarly, if hazardous materials are not anticipated to be encountered, will constant air monitoring be required?

A97: Conduct air monitoring as required in the specifications.

Q98: Should the contractor assume hazardous material waste will be encountered during monitoring well installation?

A98: Hazardous waste materials are not anticipated to be encountered.

Q99: Can the demo’d road material be graded into the landfill?

A99: Yes

Q100: I have received the following questions from the leachate pump system manufacturer that you have in the spec (Lorentz):

1. What is the fluid temperature?

a. As we discussed, this will mainly affect the pump end. We will default to a 2/4

(20C - 40C) pumpend as that is the most typical pumpend required in this type of application. This can change as we get the details with minimal effect to the quote.

Fluid temperature will likely be similar to groundwater temperature. Generally, groundwater temperatures in this area of Michigan range from a low of about 5 C (41F) in winter to about 20 C (68 F) in summer.

2. Is the well pressurized or under vacuum?

a. We discussed that the well is likely not under pressure or vacuum, but we will include a casing pressure sensor to offset any influence on the level transducer. If it is under vacuum, we will have to change the sensor type.

The manhole will not be sealed to the atmosphere. Assume ambient atmospheric pressure.

3. How will the motor and level sensor cables exit the well?

a. Some customers will drill and tap holes for cable glands. We will include a

Lorentz well head as optional. This well head is designed to merry up with a standard 8" flange.

This is acceptable.

4. Concrete foundation

a. If the purpose of the foundation is meant for mounting the solar array pole, Lorentz has moved to a mobile mounting structure to increase flexibility. This is a much more convenient structure due to its mobility.

A mobile mounting structure may be used so long as it is capable of withstanding local weather conditions.

5. Float switch for frac tank

a. Lorentz has float switches for water applications but does not have a variant robust enough for leachate applications. We typically use a level transducer for 'tank full' notifications/operation.

Level transducers are acceptable in lieu of float switches.

6. Level transducer

a. As we discussed, we attach our level transducer to the pump and motor assembly. This ensures that we know exactly how much fluid is over the intake of the pump. It's a failsafe to prevent dry run.

This is acceptable.

A100: See above in italics.

Q101: Is there a detail for the monitoring wells? How deep are they? What pipe materials are to be used?

A101: Monitoring well depths will be determined based on field observations at the time of installation. For bidding purposes, assume maximum well depths of 20 feet below ground surface.

Q102: Is sonic drilling methods required for both monitoring wells and Gas Vents?

A102: There is no preference as to drilling method.

Q103: Is there a thickness required for the GCL?

A103: No.

Q104: I don't see any compaction requirements. Can you confirm there is not a compaction requirement? Will we be required to compact it with a roller even though there is no compaction requirement?

A104: See answer to question 80.

Q105: The Site Restoration spec states that topsoil material shall be free of stones, stumps, lumps and similar objects larger than 2-inches in diameter, and shall, at a minimum, meet the following requirements:

o Must be free of contaminants.

o Must not be excessively acidic or excessively alkaline.

o Must not contain natural underlying soils, subbase materials, or other unsuitable

Can you clarify what the topsoil testing requirements are and who is responsible? It is very difficult to find a topsoil source that tests their topsoil for contaminants.

A105: Topsoil shall be analyzed for volatile organic compounds, polynuclear aromatic compounds, PFAS, and metals. The Contractor shall be responsible for collecting and analyzing topsoil samples.

Q106: Can you clarify where the cost for monitoring well abandonment is supposed to be covered?

A106: Monitoring well abandonment shall be paid under Contract Item 2.

Q107: Can you clarify where the on-site office will be located and if a gravel pad will be needed? If a gravel pad is needed, will these materials be covered in their respective bid items?

A107: It anticipated that the on-site office will be located in the area between Hewitt Drain and the work area; however, the winning contractor will coordinate with the Owner and Professional regarding placement of the on-site office. It is up to the Contractor’s discretion if the office will require a pad. If the Contractor chooses to install a pad, include the cost under Contract item No.

2.

Q108: Can you clarify if the temporary road on the south end of the job will need to be removed at the end of the job?

A108: See answer to question 61.

Q109: Can you clarify if the existing layer of topsoil will need to be stripped prior to cut/fill within the proposed cap area? If yes, please clarify if the stripped topsoil can be stockpiled on site and re-used for restoration or if it needs to be hauled off?

A109: See answer to Q38.

Q110: Can you please add a legend to the soil erosion and sedimentation control plan on the drawings? The legend in the specifications does not match the drawings, so there is some confusion for this scope of work.

A110: See Attachment 5.

Q111: Please clarify the regulatory classification of the water to be transported. Is the material considered hazardous waste under RCRA, liquid industrial by-product, or non-hazardous wastewater? Please identify the required transportation permits, manifests, disposal facility, and whether a hazardous waste transporter license or DOT hazmat requirements apply.

A111: For bidding purposes assume water will be treated as a non-hazardous wastewater.

Q112: How many tons of general fill are available from the off - site borrow pit? How many miles is the borrow pit from the site?

A112: This is to be determined by the Contractor and/or their subcontractors/suppliers.

Q113: I plan to bid the GCL portion of the Bishop project I always try to perform my own quantity takeoff and I am struggling to determine limits of liner or the “border of landfill cap” around the perimeter of the cell. Is there any chance you could highlight or more definitively define that line. It makes me nervous to bid based on quantity alone.

A113: Please bid the quantity specified in the bid.

Q114: Can you clarify what will be required for the temporary truck washes and where those costs should be covered?

A114: See answer to Q4. Cover costs associated with truck washes under Contract Item No. 2.

Q115: Please confirm if loader bucket scales will be an approved scale for measurement and payment of pay items by the ton?

A115: Scales must be certified.

Q116: Please clarify if wood chips from tree clearing can all be left on site or if they will need to be hauled off?

A116: See answers to questions 15 and 21.

ACKNOWLEDGEMENT: This Addendum must be acknowledged by the Bidder in the space provided in the Bid Summary and Bid Form. Failing to acknowledge Addenda may be cause for the Bid to be rejected. Addenda will become part of the Contract Documents.

PROFESSIONAL: DLZ Michigan, Inc. DATE: 7/16/2026

APPROVED BY:

PROJECT DIRECTOR: DATE: Click to enter date

ATTACHMENT 1

REVISED DRAWING SHEET 6

F i l e

N a m e

M

P R O

J

F l i n t

B i s h o p

L a n d f i l l C A D

S h e e t

F i l e s S u b g r a d e

C u t a n d

F i l l

P l a n d w g

L a y o u t

L a y o u t

D a t e

T h u r s d a y

S e p t e m b e r rbutler Text Box

MICHIGAN DEPARTMENT OF ENVIRONMENT, GREAT LAKES AND ENERGY

rbutler Text Box 2341-7650-01 rbutler Text Box

ATTACHMENT 2

WELL DETAIL

2" PVC 0.010-inch Slotted Well Screen

Well Filter Sand

Bottom of Well 20' bgs, or as determined by the Field Geologist

1' Fine Sand Collar

Bentonite Grout

2" PVC Well Riser

5' -0

1'

-0

1' -0

0' -6

2' x 2' Concrete Pad Native Material

2" Expandable Well Plug

Well Filter Sand

Lockable Stick-up Well Cover

4.25" ID Borehole

Monitoring Well Detail Not to Scale

ATTACHMENT 3

REVISED BID SCHEDULE

MICHSPEC DTMB 00300 − 4

ARTICLE 6 BID SCHEDULE

6.1 Base Bid Schedule - The Bidder will complete the Work and accept in full payment, for the Work items listed, the following unit prices and/or Bid Prices, as applicable:

Base Bid Item No.

Estimated Quantity

Unit Description

Unit Price

Item Bid Price

1 1 Lump Sum Mobilization NA

2 1 Lump Sum Site Services NA

3 1 Lump Sum Clearing and Grubbing NA

4 1 Lump Sum Soil Erosion, Sedimentation, and Stormwater Control NA

5 1 Lump Sum Grading

6 88,000 Ton General Fill

7a 3,000 Ton Structural Fill

7b 174,000 Ton Granular Material

8 6,000 Ton MDOT 22A Aggregate

9 2,000 Ton MDOT 6A Aggregate

10 52,000 Ton Topsoil

11 11,000 Ton MDOT Plain Rip Rap

11a 5,500 Ton 1”x3” Crushed Stone

12 3,100 Ton Asphalt

13 1,530,000 Square Feet Geosynthetic Clay Liner

14 195,000 Square Feet Geotextile-Woven

15a 11 Each Gas Vent

15b 24 Each Monitoring Well Installation

16 2,340 Lineal Feet Temporary Fence

17 3,440 Lineal Feet Permanent Fence

18 43 Acre Turf Establishment

19 6,000 Lineal Feet Cap Drain – 4” Dia. Perforated Pipe

20 1 Lump Sum Leachate Collection System NA

21 12 Month Operation and Maintenance of Leachate Collection System

22 100,000 Gallon Removal and Disposal of Leachate

23 1 Lump Sum Drain Crossing NA

24 1 Lump Sum Demobilization NA

25 1 Provisionary

Allowance

Provisionary Allowance NA $150,000

TOTAL (This amount should equal the Base Bid amount on the Bid

Summary Form)

Base Bid (Sum of Bid Prices for all Base Bid Items):

________________________________________________________________ Dollars and No/Cents $__________________________

MICHSPEC DTMB 00300 − 4

(use words) (in figures)

Name of the Bidder _________________________________________ File No. 761/25250.SAR

Date _________________________

SIGMA VENDOR NUMBER _________________________________

Telephone No. _______________________

ATTACHMENT 4

REVISED SECTION 01270

Measurement and Payment

FBAPL 01270-1

May 2026

SECTION 01270

MEASUREMENT AND PAYMENT

PART 1 GENERAL

1.01 DESCRIPTION

All units of measurement shall be standard United States convention as applied to the specific items of work by tradition and as interpreted by the Professional.

A. Unit Price Items

Payment items for the work of this contract on which the contract progress payment will be based are listed in the contract documents, Bid Schedule and described below. The unit price and payment made for each item listed shall constitute full compensation for furnishing all labor, materials, and equipment, and performing any associated Contractor quality control, environmental protection, safety requirements, sampling, tests, and reports, and for performing all work required for each of the unit price items. Payment is contingent upon approval of all applicable submittals. Payment shall be paid for the actual amount of Work accepted. The amount will be in accordance with prices submitted on the

Bid Schedule. Payment listed by the ton shall be measured by the weight of the materials via a certified scale as per section 1.09.01.B.6 of the 2012 Standard Specifications for

Construction by Michigan Department of Transportation (MDOT). All the fill materials brought to site shall be measured by the certified scale, as identified by the Contractor and approved through the submittal process.

B. Lump Sum Items

Payment items for the work of this contract for which Contract lump sum payments will be made are listed in the contract documents, Bid Schedule and described below. Contract progress payments for lump sum items will be paid for based on the approved schedule of values. All cost for items of work, which are not specifically mentioned to be included in a particular lump sum or unit price payment item, shall be included in the listed lump sum item most closely associated with the work involved. The lump sum price and payment made for each item listed shall constitute full compensation for furnishing all labor, materials, and equipment, and performing any associated Contractor quality control, environmental protection, safety requirements, sampling, tests and reports, and for performing all work required for which separated payment is not otherwise provided.

Payment is contingent upon approval of all applicable submittals. Payment shall be paid on the Work completed and accepted. One hundred percent of the Contract price for the

Work completed and accepted may be paid, subject to the limitations of the Contract

Documents. The Owner reserves the right to pay the Contract a portion of a lump sum line item, if all of the Work originally tasked is not performed as stated herein, as determined by the Professional.

FBAPL 01270-2

C. Provisionary Allowance Items

Payment for work under a Provisionary Allowance is subject to issuance of a Change

Authorization. A Change Authorization is a written order approved by the Owner and issued by the Professional, which directs changes in the Work that requires no adjustment to Contract Price or Contract Time. Monies in the allowance will be used only if directed in writing by the Project Manager and Professional. Unused allowance monies will be deducted from the contract amount through contract change order. Also refer to Section

00700, 6.7.

D. Cash Allowance Items

Payments under a Cash Allowance must be on actual cost and exclude cost for supervision, handling, unloading, storage, installation, testing, fee, premiums for bond and insurance, markups, etc. Monies in the cash allowance will be used only if directed in writing by the

Project Manager and Professional. Also refer to Section 00700, 6.7.

1.02 PAYMENT

A. Refer to Division 0 Section 0700.

B. Payments to the Contractor will be made for the actual quantities of the Contract items performed and accepted, in accordance with the Contract Documents. Upon completion of the Work, if the actual quantities show a decrease or increase from the quantities included in the Contract, the Contract extended prices will prevail, except as provided hereinafter.

C. The Contractor shall accept compensation, as provided herein, as full payment to furnish all materials, labor, tools, equipment, and incidentals necessary to complete the Work; for performing all Work stated by the Contract; for all loss or damage arising from the nature of the Work, from the action of the elements, or from any unforeseen difficulties that may be encountered during the execution of the Work and until its final acceptance by the

Professional and Owner; for all risks of every description connected with the execution of the Work, except as provided herein; and for all expenses incurred in consequence of the suspension of the Work, as herein authorized.

D. No extra payment or contract extensions will be made to the Contractor for any expense or delays caused by the revision of inadequate submittals, lack of progress, weather, defective workmanship, or rescheduling.

E. Additional costs caused by ill-timed or defective Work, or Work not conforming to the

Contract Documents, shall be incurred solely by the Contractor.

F. Final Application for Payment shall be submitted pursuant to the Contract Documents.

G. The estimated quantities for unit price pay items, as listed in the Bid Schedule, are

FBAPL 01270-3

May 2026 approximate only and are included solely for the purpose of comparison of Bids. The

Owner and Professional do not express or by implication agree that the actual quantities of material encountered or required will correspond with the Bid Schedule. The Owner reserves the right to increase, decrease, or eliminate any quantity deemed necessary.

When alterations in quantities are within plus or minus 20 percent of the original estimated quantity of Work listed on the Bid Schedule, the Contractor will not be entitled to any adjustments in the unit bid price as a results of any changes in the estimated quantities, and agrees to accept the aforementioned unit bid prices as complete and total compensation for any additions caused by changes or alteration in the Work and ordered by the Owner and Professional. Also refer to Section 00700, 10.6.

H. When alterations in quantities are greater than plus or minus 20 percent of the original estimated quantity of Work listed on the Bid Schedule, the Contractor will be required to document, to the satisfaction of the Professional, all labor, materials, and equipment costs related to the increase/decreased quantity. Also refer to Section 00700, 10.6.

1.03 PAYMENT FOR INCREASED OR DECREASED QUANTITIES

A. Payment for increased or decreased quantities shall be as specified in the Contract

Documents.

B. Increased or decreased work involving Change Orders will be paid for, as stipulated in such

Change Orders.

1.04 INCIDENTAL WORK

A. Work items for which separate payments are not measured, but are included as part of the

Contract include, but are not limited to, the following:

1. Field supervision

2. Jobsite administration

3. Disposal of rinseate and decontamination water and all associated sampling, analysis, permits and fees

4. Dust monitoring and control

5. Project record documents

6. All temporary fencing and barriers

7. Restoration of disturbed areas not designated or described in these Contract

Documents

8. Health and safety requirements

9. Cooperation with other subcontractors

10. Environmental protection

11. Control of surface water and runoff water entering the site and excavations

12. Locating, protecting, disconnecting, removing, replacing, and capping in-place of site utilities, as applicable

13. Site cleaning including street sweeping/cleaning

14. All activities required to conform to MDOT and FAA standards and regulations and

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May 2026 permit requirements, that are not specified herein

15. QA/QC

16. Invoicing/billing

17. Storage of equipment

1.05 SPECIFIC BASE BID PAY ITEMS

A. Contract Item No. 1: Mobilization (Lump Sum)

Payment for Mobilization shall be paid for at the Contract Lump Sum price. This item shall include all necessary labor, tools, materials, storage, and…