Addendum 5.pdf

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STATE OF MICHIGAN Date Issued: 10/6/2017 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: 10/11/2017

ADDENDUM NO. 5

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: Section 020500-Site Preparation, Part III Execution, B,2 – Site Access specifies, ”… 2.5 inch (#3) clear stone”, for the sediment / soil tracking pad. This appears to be an Indiana DOT specification. Section 322300-Excavation and Fill, Part II Products, B, Crushed Limestone calls for a “...clean 3” limestone”. Michigan vendors are finding it difficult to find material in the area that meet the Indiana specification and limestone is not a natural material in the South Haven area. 1’ x 3” crushed concrete is typically used and acceptable for the stone track out pads, would this be acceptable?

Response 1: Open graded or washed aggregate 1 to 3 inches in diameter comprising crushed stone or crushed Portland cement concrete is acceptable for the soil track-out pad. Crushed Portland cement concrete shall not contain more than 5 percent building rubble or hot mix asphalt by particle count.

Question 2: Is MDOT 22A natural stone acceptable for the roadways and parking lots? This material is locally in supply.

Response 2: MDOT 22A natural stone is acceptable for the gravel access road/driveway and parking area.

Question 3: Can the bidders get an MDOT equivalent for the ¼” (AASHTO #8) clear stone specified in Section 023213-Drilling and Well Installation, Part III Execution, G, 2 Horizontal Extraction Well Installations? Would MDOT 34R peastone be acceptable?

Response 3: MDOT 34R is an acceptable substitute for AASHTO #8 clear stone.

Question 4: SECTION 026100 – COLLECTION AND DISPOSAL OF CONTAMINATED SOLID

WASTE PART III – EXECUTION E. SOLIDS STORAGE/STOCKPILING

Please clarify if roll off boxes are required for material staging or if a soils and concrete can be placed in a storage / accumulation area with a liner and/or secondary containment? Roll off will be extremely expensive if required for soils and concrete.

Response 4: The requirement for storing contaminated solid waste in roll-off boxes applies to soil cuttings generated during drilling activities.

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Question 5: Is excavated soil to be used for the backfill of the Shallow Dual-Phase Extraction System Piping?

Response 5: Yes

Question 6: Section 035216-Lightweight Insulating Concrete, Part II Products, A. Materials, 2. Mineral Aggregate. The specialty concrete supplier has indicated that this specification should not be included.

Please clarify.

Response 6: The mineral aggregate requirements for Lightweight Insulating Concrete were replaced by the specification provided in Addendum No. 3.

Question 7: Section 035216-Lightweight Insulating Concrete, Part II Products, B. Cellular Lightweight Insulating Concrete, 2, and 4. The minimum requirements are dependent on what class of lightweight insulating concrete is being requested? Which class 1, 2, or 3?

Response 7: The Class 3 material provided by Elastizell meets or exceeds the specified minimum requirements. An equivalent material provided by Cematrix that meets or exceeds the specified minimum requirements for lightweight insulating is also acceptable.

Question 8: Lightweight Insulating Concrete cannot be placed in temperatures below 32 degrees F.

Please clarify the cold weather concrete installation requirement.

Response 8: Placement of lightweight insulating concrete will not be required in ambient temperatures below 32 degrees F. The Phase 1 contract time will be extended if ambient temperatures below 32 degrees F prevent placement of lightweight insulating concrete within the 100 calendar day contract time when the cold weather installation precautions associated with Pay Item 4F – Cold Weather Installation of the Concrete Vapor Cap are taken, as appropriate. Costs associated with mix adjustments to allow placement of lightweight insulating concrete in near-freezing conditions (i.e., use of heated mix water and high early strength cement) shall be included under Pay Item 4F – Cold Weather Installation of the Concrete Vapor Cap, and identified in the Contractor’s Schedule of Values.

Item 2 – Estimated Notice-to-Proceed Date: Due to the change in the bid opening date described in Addendum No. 4, the anticipated Notice-to-Proceed date for Phase 1 is revised to December 2017. A delay in the issuance of the Notice-to-Proceed beyond this estimated date shall not be cause for Contractor to request a Change Order.

Item 3 – Pre-Award Meeting & Pre-Award Submittals: Due to the change in the bid opening date described in Addendum No. 4, the pre-award meeting date is revised to October 13, 2017 at 10:00 AM. The pre-award meeting will be held via telephone. The required post-bid submittals shall be provided to the professional by October 12, 2017 at 1:00 PM.

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, Chad Weber Project Professional Global Remediation Technologies, Inc.

Lansing, Michigan 48909