Addendum 2 07073.pdf

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STATE OF MICHIGAN Date Issued: 9/22/2017

Department of Technology, Management and Budget Index No(s): 44501

Facilities and Business Services Administration File No: 761/07073.SAR

First Floor Stevens T. Mason Building Department: MDEQ-RRD

P.O. Box 30026 Project Name: Belgravia Lansing, Michigan 48909

Subject: Remediation System Construction Support

Bid Opening Date: 9/27/2017

ADDENDUM NO. 2

TO: All Bidders

SUBJECT: Revision to the Bidding Specifications for the Belgravia Remediation System Construction Support project in South Haven, Michigan

INTENT: This Addendum is issued to provide responses to bidder questions, further clarify the existing bidding and contract document and provide additional information to aid in the preparation of bid submittals.

Item 1 – Bidder Questions and Responses:

Question 1: Will a nominal 10” sonic drill stem (9.5” inside diameter) be acceptable for the 8” electrode installations?

Response 1: Yes

Question 2: Is it possible to provide a one week extension for bid submittal?

Response 2: No.

Question 3: Can we assume all drilling work will be completed in Level D PPE?

Response 3: Personal protective equipment (PPE) necessary to safely conduct the work is the responsibility of the Contractor.

Question 4: Can you provide the approximate depths of the casing for the double cased wells that need to be abandoned?

Response 4: Please see the attached Table 1, Well Construction Summary. The Permanent Casing Depth indicates the depths of the double casing.

Question 5: McMillan McGee’s figure WCD-01 has a 4” X 29’, 6” Contingency Extraction Well on the document however I don’t see that any of those wells needed to complete the SOW. Can you clarify?

Response 5: Contingency extraction wells will be installed only as necessary and as requested by the Professional. These wells will be paid for, if required, out of the Provisionary Allowance.

Question 6: The specifications call for Sonic Drilling. Can Hollow Stem Auger be used as a replacement?

Response 6: No.

Question 7: The bid is available on both Buy 4 Michigan and Sigma. Where would you prefer we submit our bid?

Response 7: Bids are to be submitted via SIGMA. For questions regarding SIGMA please see Section 00800 Item 5 of the bidding specifications.

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Question 8: Section 01025 Measurement and Payment, 2.3 Specific Pay Items, 1, Item 1C, Payment for this item shall be made at the Contract Unit Price per month or pro-rated portion thereof… Trailer rentals are for complete months, on a 28-day billing cycle. Contractor has to bill the owner for a full month. Please clarify or revise.

Response 8: Billing for trailer rental will be on a per month basis.

Question 9: Section 01500 Construction Facilities and Temporary Controls, 6 Electrode and Graphite Material Unloading, Storage, and Security. What will the maximum weight that needs to be off loaded be? What type of storage is necessary for the materials?

Response 9: Electrodes come in bundles, not on pallets, with up to 8 electrodes in a bundle and weigh approximately 800 lbs. Graphite will be shipped to the site on pallets, each of which will weigh up to 3,000 lbs. Per Appendix XIV of the specifications: The electrodes, graphite and ancillary material are to be staged on dunnage and securely tarped from the time of unloading from the delivery truck until the time of installation. The staged materials are to be stored within the secured fenced perimiter of the work area.

Question 10: Section 020500 Site Preparation, Part III Execution, H Temporary Decontamination Area. “If present outside the thermal treatment area boundary, the decontamination area shall be lined to prevent contact of underlying soils…to control and facilitate collection of decontamination liquids… “ If the decon pad is within the thermal treatment area boundary, does it need to be lined and do the liquids have to be collected?

Response 10: If the decontamination pad is located within the thermal remediation boundary, lining is not required; however, all decontamination solids and liquids shall be collected and properly managed (e.g., drill rod may be washed over a trough/basin but the entire decon area does not need a separate membrane liner).

Question 11: Section 03300 Cast In Place Concrete, and Section 035216 Lightweight Insulating Concrete, Part III Execution, B Formwork Erection, 2 and 3. Is this saying that earthwork can be used as the forms? If so, what alignment of joints is necessary?

Response 11: The perimeter of the vapor cap concrete shall be formed with wood forms or approved alternate as shown in Sheet VCD-01 of the McMillan-McGee Design Document included in Appendix X of the Bidding and Contract Document. Concrete pads for well/piping vaults located outside the vapor cap boundary can be earth-formed.

Question 12: Who is responsible for concrete testing?

Response 12: Concrete testing for waste characterization purposes shall be completed by the Contractor. Concrete testing for material property and/or thickness verification shall be completed by and at the discretion of the Professional. Coring required for collection of concrete samples for material property and/or thickness verification shall be completed by the Contractor (up to 6 cores, up to 6-inch diameter).

Question 13: Section 320500 Common Work Results For Exterior Improvements, Part III Execution, B Restoration of Grounds, 1 125 Elkenburg. Where is the southern limit of the new wooden fence on the east side of this address?

Response 13: The new wooden fence on the eastern portion of the 125 Elkenburg property shall extend from the northeastern corner of the property to the south along the eastern property boundary to a point even with the northeastern corner of the building. From this point, the fence shall run to the west a distance of approximately 20 feet and terminate at the northeastern corner of the building.

Question 14: Section 334100 Storm Utility Drainage, Part III Execution, D Pumping and Bypassing.

What is the existing flow?

Response 14: The storm drain has low or no flow during dry conditions (e.g., estimated less than 50 gallons per minute). The flow rate during precipitation events and wet conditions will vary and is unknown.

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Question 15: Appendix III Special Project Procedures, Training and Licensing, 1. Do all of the subs and vendors have to be 40 Hour Hazwoper trained? (Surveyor, Concrete, Landscape, Fence, etc.)

Response 15: The Contractor shall comply with all relevant OSHA and MIOSHA requirements applicable for the work being performed. The Bidding and Contract Document does not require hazardous waste operations/Hazwoper training for workers that are not exposed to contamination from the Site. This may include workers completing primarily above-grade tasks such as surveying, concrete placement, landscaping, fencing, etc. unless Contractor’s other activities at the site were to cause an exposure (e.g., through a surveyor inhaling vapors while drilling is occurring, a concrete worker moving contaminated waste materials during preparation for concrete placement, etc.).

Question 16: Appendix III Special Project Procedures, Training and Licensing, 1. Do all of the subs and vendors need to have the 40 Hour Hazardous Waste Site Operator’s course? (Surveyor, Concrete, Landscape, Fence, etc.)

Response 16: See response to Question 10 above.

Question 17: The McMillan-McGee drawing WDL-01 Well Field Layout indicates that the Vapor Cap is 29,500 sf in size, which implies a total of 2 ft. of concrete over the entire area. The McMillan-McGee drawing VCD-01 Cellular Concrete Vapor Cap Cross Section only shows the concrete cap at the well heads. The McMillan-McGee drawing WCD-02 Horizontal Extraction Wells, only shows a Geofabric, native material, and clear stone over the Horizontal Wells. These wells are within the Vapor Cap area shown in drawing WFL-01. Please clarify. If the concrete cap is just at the well heads what is the length and width of the concrete pad?

Response 17: The concrete vapor cap is required across the entire thermal remediation area, with the boundary as shown in the McMillan-McGee Design Document drawings (e.g., Sheet WFL-01 and WFL-01 ALT). The cross sections show an example profile view of the vapor cap and are not intended to depict the horizontal extent of the vapor cap. The top layer shown in the cross sections on Sheet

WCD-02 is labeled as “vapor cap”.

Question 18: Is there a separate detail for the Vapor Cap at the electrodes and temperature sensor wells?

Response 18: There are no separate details showing the concrete vapor cap at the electrodes and temperature sensor wells. The concrete vapor cap will extend as a continuous surface up to the pipes/risers at the electrodes and temperature sensor wells.

Question 19: At the Pre-Bid meeting the bidders were told that the wellhead for the horizontal wells was a pipe brought above ground and that was all, but to look at the McMillan-McGee drawings.

Drawing WCD-02 Horizontal Extraction Wells, shows a pipe terminating above ground with male threads, while WHD-02 Horizontal Extraction Wellhead Detail-Well Head Details shows a pipe with a cross connection fitting, gauge, valve, and tee. Please clarify.

Response 19: The wellhead for the horizontal wells shall be constructed consistent with Sheet WHD- 02 of the McMillan-McGee Design Document drawings. The wellhead completions shown in Sheets WHD-01 and WHD-02 of the McMillan-McGee Design Document drawings are not part of the work (refer to Page 02-07 of the Bidding and Contract Document, Item B.1).

Question 20: If the Vapor Cap extends over the entire area, will the above ground piping be installed before or after the Vapor Cap is poured?

Response 20: The Professional’s above ground piping will be installed after the vapor cap is constructed and Phase 1 of the project is complete.

Question 21: Section 321000 Paving, Part III Execution, A.1 Temporary Bike Path refers to Appendix VIII, sheet 4 of 14, Proposed Cross Section Station 14+23 to 23+58. What is the specification for the 8” aggregate base?

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Response 21: The aggregate base shall comply with the Van Buren Trail Project Manual, which adopts the MDOT 2012 Standard Specifications for Construction. According to MDOT (2012), aggregate base course shall be constructed using Dense-Graded Aggregate 21AA, 21A, or 22A.

Question 22: After talking to the contact for Frontier Communications, I was told that they will not be able to provide a price for their utility relocation at 107 Orchard, by the bid submittal date.

Response 22: Please refer to Item 2 below.

Question 23: After talking to the contact for Comcast, I was told they could not guarantee a price for their utility relocation at 107 Orchard, by the bid submittal date.

Response 23: Please refer to Item 2 below.

Question 24: After talking to the contact for the City of South Haven DPW, I was told they may not be able to provide a complete price for the water and sanitary lines.

Response 24: The City of South Haven’s portion of the work related to providing water and sanitary sewer services for the thermal remediation system has been removed from the work. The Professional will commission the City of South Haven to provide stubs for the water and sanitary sewer service at no cost to the Contractor in advance of the Contractor’s commencement of work. This will allow the City to restore pavement before winter. The City will stub these utilities at the back of the curb approximately as depicted in Figure 3 of the Drawings. The Contractor shall be responsible for all remaining tasks related to connecting to the stubs and running the services to the remediation area as described in the Bidding and Contract Document. The City services to be paid by Professional are limited to the following: Water Connection Fee for a 1” Service, Sewer Connection Fee for a 4” Service, Water Inspection Fee, Sewer Inspection Fee, and ¾” Water Meter/Pit/Radio.

Question 25: Will the owner consider extending the bid due date for one week?

Response 25: Please refer to response 2 above.

Item 2 – An updated Bid Schedule has been prepared (see attached), which includes revisions to Item A.7 Cash Allowance for Site Restoration at 107 Orchard Drive Parcel. Item A.7 now includes cash allowance to reimburse the Contractor for costs incurred, from the utility providers, associated with the relocation of utilities at 107 Orchard.

Item 3 – In addition to the requirements for the mandatory September 28, 2017 Pre-Award meeting as set forth in Addendum No. 1 the Professional will require the apparent low bidder to provide draft copies of a Schedule of Values and a list of proposed subcontractors for discussion. The purpose of the Pre-Award meeting is to determine suitability of the apparent low-bidder to complete the project as specified and to confirm the Contractor’s accurate understanding of the specified scope of work. Any additional documents which support the apparent low bidders position as a suitable and knowledgable candidate for the Contract Award are encouraged.

ACKNOWLEDGEMENT: This Addendum must be properly acknowledged on the bidder's proposal for submission of a valid proposal. The changes and information shall become part of the contract documents.

(Authority: 1984 PA 431)

Sincerely, Brian M. Ross Project Professional Global Remediation Technologies, Inc.

Attachments (Table 1, revised Bid Schedule)

Table 1: Well Construction Summary Belgravia Site

South Haven, Van Buren County, Michigan

Well ID Well

Depth (feet)

Nominal Well Dia. (inches)

Well Riser Material

Upper Annulus Seal

Permanent Casing?

Permanent Casing Depth

(feet) MW-1R 7 2 PVC Bentonite Chip No

MW-10R 8 2 PVC Bentonite Chip No MW-11R 7 2 PVC Bentonite Chip No MW-16R 7 2 PVC Bentonite Chip No MW-17R 7 2 PVC Bentonite Chip No MW-18R 7 2 PVC Bentonite Chip No MW-19R 7 2 PVC Bentonite Chip No MW-20R 7 2 PVC Bentonite Chip No MW-30 14.5 2 PVC Cement Grout No MW-31 70 2 PVC Cement Grout Yes, 7" DIA Steel 9 MW-32 67 2 PVC Bentonite Chip No

MW-33D 68 2 PVC Cement Grout Yes, 7" DIA Steel 13 MW-33I 32 2 Galv. Steel Cement Grout Yes, 7" DIA Steel 12 MW-33S 7 2 PVC Cement Grout No MW-34 13 2 PVC Bentonite Chip No

MW-35S 7 2 PVC Bentonite Chip No MW-35D 67 2 PVC Cement Grout No MW-36S 6.5 2 PVC Bentonite Chip No MW-36D 66 2 PVC Cement Grout Yes, 7" DIA Steel 12.5 MW-37I 27 2 Galv. Steel Cement Grout No MW-37D 64 2 PVC Cement Grout No MW-38 72 2 PVC Cement Grout No MW-39 29 2 PVC Cement Grout Yes, 7" DIA Steel 9 MW-40 7 2 PVC Bentonite Chip No MW-41 7 2 PVC Bentonite Chip No MW-42I 32 2 Galv. Steel Cement Grout Yes, 7" DIA Steel 12 MW-43I 29 2 Galv. Steel Cement Grout Yes, 7" DIA Steel 12 MW-44I 32 2 Galv. Steel Cement Grout Yes, 7" DIA Steel 12 MW-45I 30 2 PVC Bentonite Chip No MW-45S 7.3 2 PVC Bentonite Chip No MW-46I 32 2 Galv. Steel Bentonite Chip Yes, 7" DIA Steel 12 MW-47I 23 2 PVC Cement Grout No MW-48I 27 2 PVC Cement Grout No MW-49I 23 2 PVC Cement Grout No MW-49S 10 2 PVC Cement Grout No MW-50I 31 2 PVC Bentonite Chip No MW-50S 7 2 PVC Bentonite Chip No MW-51 7 2 PVC Bentonite Chip No MW-52 7 2 PVC Bentonite Chip No MW-53 7.5 2 PVC Bentonite Chip No MW-54 7 2 PVC Bentonite Chip No PSW-1 33 2 Galv. Steel Cement Grout Yes, 7" DIA Steel 9.5 PSW-2 33 2 Galv. Steel Cement Grout Yes, 7" DIA Steel 10.3 PSW-3 28 2 Galv. Steel Cement Grout Yes, 7" DIA Steel 8.5 PSW-4 28 2 Galv. Steel Cement Grout Yes, 7" DIA Steel 17 PSW-5 31 2 Galv. Steel Bentonite Chip Yes, 7" DIA Steel 12 RW-1 32 4 Galv. Steel Cement Grout Yes, 7" DIA Steel 12 RW-2 32 4 Galv. Steel Cement Grout Yes, 7" DIA Steel 12 RW-3 32 4 Galv. Steel Cement Grout Yes, 7" DIA Steel 12

Bidding and Contract Document (R 9/16) Project Name: Belgravia File No. 761/07073.SAR

BID SCHEDULE

Base Bid Schedule - The Bidder will complete the Work and accept as full payment, for the Work items listed, the following Unit

Prices and/or Item Bid Prices, as applicable:

Item No. Description Quantity Units

Unit Price

Item Bid Price

PHASE 1

1A Submittals and Site Service 1 Lump Sum

1B Mobilization 1 Lump Sum

1C Construction Field Office - Period Between Phase 1 and Phase 2 8 Month

1D Site Security Guard 12 Month

2A Temporary Bike Path 1 Lump Sum

2B Gravel Access Driveways/Parking Areas and Stone Track-Out Pad 1 Lump Sum

2C Remove Disused Extraction System Piping, Fencing and Tanks/Containment, and Disused Storm Drain Piping 1 Lump Sum

2D Abandon Existing Monitoring Wells 1 Lump Sum

2E Replace Storm Drain Piping 1 Lump Sum

2F Remove Disused Water Line 1 Lump Sum

3A Water Service for Thermal Remediation System 1 Lump Sum

3B Sanitary Sewer Service for Thermal Remediation System 1 Lump Sum

3C Power Service and Transformer for Thermal Remediation System 1 Lump Sum

4A Electrode Wells 84 Each

4B Vertical Multi-Phase Extraction Wells 54 Each

4C Temperature Sensor Wells 6 Each

4D Horizontal Vapor Extraction Wells 1 Lump Sum

4E Concrete Vapor Cap 1 Lump Sum

4F Cold Weather Installation of the Concrete Vapor Cap 1 Lump Sum

5A Shallow Dual-Phase Extraction Wells 12 Each

5B Shallow Dual-Phase Extraction System Piping, Valves, Valve Boxes 1 Lump Sum

6A Containment, Characterization, Transport & Disposal of Non- Hazardous Solid Waste 1200 Tons

6B Containment, Characterization, Transport & Disposal of Hazardous Solid Waste 200 Tons

6C Containment, Characterization, Transport & Disposal of Non- Hazardous Liquid Waste 950 Gallons

6D Containment, Characterization, Transport & Disposal of Hazardous Liquid Waste 2000 Gallons

7 Demobilization 1 Lump Sum

PHASE 2

8A Mobilization 1 Lump Sum

8B Abandon Remediation System Wells 1 Lump Sum

8C Abandon/Remove Thermal Remediation System Utility Services 1 Lump Sum

8D Fencing Removal and Replacement 1 Lump Sum

8E Bike Path Removal/Restoration 1 Lump Sum

8F Concrete Removal and Site Grounds Restoration 1 Lump Sum

8G Demobilization 1 Lump Sum

PROVISIONARY ALLOWANCE

9A Provisionary Allowance for Unforeseen Site Conditions 1 Lump Sum $50,000 $50,000

9B Cash Allowance for City of South Haven Power Services 1 Lump Sum $10,000 $10,000

Total Base Bid

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

__________________________________________________________________ Dollars $__________________________ (use words) (in figures)

Bidding and Contract Document (R 9/16) Project Name: Belgravia File No. 761/07073.SAR

Schedule of Alternates - The Bidder will complete (or deduct from the Contract) the parts of the Work designated by the

Alternates that follow and accept in full payment (or allow in full credit) for those parts of the Work the following Item Bid Prices:

ALTERNATE 1: Thermal Remediation System Expansion – 107 Orchard

Item No. Description Quantity Units

Unit Price

Item Bid Price

PHASE 1

A.1A Submittals and Site Service 1 Lump Sum

A.1B Mobilization 1 Lump Sum

A.2 Abandon Existing Monitoring Wells 1 Lump Sum

A.3A Electrode Wells 11 Each

A.3B Vertical Multi-Phase Extraction Wells 8 Each

A.3C Horizontal Vapor Extraction Wells 1 Lump Sum

A.3D Concrete Vapor Cap 1 Lump Sum

A.3E Cold Weather Installation of the Concrete Vapor Cap 1 Lump Sum

A.4A Containment, Characterization, Transport & Disposal of Non- Hazardous Solid Waste 150 Tons

A.4B Containment, Characterization , Transport & Disposal of Hazardous Solid Waste 20 Tons

A.4C Containment, Characterization , Transport & Disposal of Non- Hazardous Liquid Waste 50 Gallons

A.4D Containment, Characterization, Transport & Disposal of Hazardous Liquid Waste 100 Gallons

A.5 Demobilization 1 Lump Sum

PHASE 2

A.6A Mobilization 1 Lump Sum

A.6B Abandon Remediation System Wells 1 Lump Sum

A.6C Concrete Vapor Cap Removal 1 Lump Sum

A.6D Demobilization 1 Lump Sum

CASH ALLOWANCE

A.7 Cash Allowance for Site Restoration at 107 Orchard Drive Parcel 1 Lump Sum $50,000 $50,000

Total Alternate 1

Alternate Bid (Sum of Item Bid Prices for all Alternate Bid Items):

__________________________________________________________________ Dollars $__________________________ (use words) (in figures)

The Bidder further acknowledges and agrees that the separate prices bid on this “Schedule of Alternates,” where they are applicable and deemed acceptable by the Owner, will be used if incorporated into the Contract when the Owner issues the Notice of Award.