March 1, 2019 607589-105920 ADDENDUM NO. 5 To Prospective Bidders and Others on: SPRINGFIELD Federal Aid Project Nos. CMQ-003S(182)X & TAP-003S(182)X Construction of the North End Pedestrian Underpass beneath Connecticut River Railroad between Plainfield Street and Birnie Avenue This Proposal to be opened and read: TUESDAY, MARCH 12, 2019 at 2:00 P.M. Transmitting changes to the Contract Documents as follows: ATTACHMENTS: RESPONSES TO BIDDER’S QUESTIONS: 16 pages. DOCUMENT 00010: Revised page 2 DOCUMENT 00860: Deleted document in its entirety and inserted new document. (2 pages) DOCUMENT A00801: Revised pages 2, 3, 44, 45, 79, 80, 81, 82, 85, 86, 102, 103, 104, 105, 106, 107, 108, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 132, 134, 136, 137, 138, 139, 157, 161, 177, 179, 180, 181, 184, 202, 228 and 262. DOCUMENT A00804: Inserted new pages 1339.1 to 1339.17 (Refer to response provided for Bidder Question 21-1) DOCUMENT B00420: Revised pages 3 to 16 inclusive. Deleted pages 17 and 18. Please take note of the above, delete document as noted, insert new document in proper order, substitute the revised pages for the originals, and acknowledge Addendum No. 5 in your Expedite Proposal file before submitting your bid. Very truly yours, Frank Kucharski, P.E. Construction Contracts Engineer LTP cc: Mike Papadopoulos, Project Manager Ten Park Plaza, Suite 4160, Boston, MA 02116 Tel: 857-368-4636, TTY: 857-368-0655 www.mass.gov/massdot THIS PAGE IS INTENTIONALLY LEFT BLANK Proposal No. 607589-105920 SPRINGFIELD Federal Aid Project Nos. CMQ-003S(182)X & TAP-003S(182)X Construction of the North End Pedestrian Underpass beneath Connecticut River Railroad Between Plainfield Street and Birnie Avenue Responses to Bidder’s Questions Addendum No. 5, March 1, 2019 Question Set 1 Advanced Drainage Systems, Inc. e-mail dated January 2, 2019 Question 1-1) I am writing in regard to the Construction of the North End Pedestrian Underpass Beneath Connecticut River Railroad between Plainfield Street and Birnie Avenue Project in Springfield, MA. Specifically, this Project is MassDOT Project Number 607589 and Bid Number BD-19-1030-0H100-0H002-31354; it is also Federal Aid Project Nos. CMQ-003S(182)X and TAP-003S(182)X. The Project is currently specified with 12-inch Reinforced Concrete Pipe (RCP). Item Number and quantity is as follows: 241.12 = 12-Inch Reinforced Concrete Pipe (80 LF) We would like to respectfully request that corrugated polypropylene pipe (per AASHTO M330) be allowed under the pipe option for the above referenced items; polypropylene pipe (per AASHTO M330) is now included within the MassDOT Interim Supplemental Specifications under Subsection M5.03.10 Corrugated Plastic Pipe. If allowed, the installation of the corrugated polypropylene pipe (per AASHTO M330) would follow MassDOT Installation Guidelines. If additional information shall be required, please contact me at your earliest convenience regarding this request for a storm drainage pipe alternative. Question Set 1, Response 1 provided in Addendum No. 2 is rescinded and replaced with the following. Response 1) Item 241.12 is deleted. 12 Inch RCP is materially revised to 12 inch Corrugated Plastic (Polyethylene) Pipe. PAGE 1 OF 16 Proposal No. 607589-105920 SPRINGFIELD Federal Aid Project Nos. CMQ-003S(182)X & TAP-003S(182)X Construction of the North End Pedestrian Underpass beneath Connecticut River Railroad Between Plainfield Street and Birnie Avenue Responses to Bidder’s Questions Addendum No. 5, March 1, 2019 Question Set 4 Daniel O’Connell and Sons, Inc. e-mail dated January 4, 2019 Question 1) Should Bid Item 369.06 -6x6 Tapping Sleeve be a 36”x6” Tapping Sleeve? Question Set 4 Response 1 provided in Addendum No. 2 is rescinded and replaced with the following. Response 1) Item 369.06 is deleted. Add new Item 369.366 36 Inch X 6 Inch Tapping Sleeve, Valve And Box. PAGE 2 OF 16 Proposal No. 607589-105920 SPRINGFIELD Federal Aid Project Nos. CMQ-003S(182)X & TAP-003S(182)X Construction of the North End Pedestrian Underpass beneath Connecticut River Railroad Between Plainfield Street and Birnie Avenue Responses to Bidder’s Questions Addendum No. 5, March 1, 2019 Question Set 5 Northern Construction Service, Inc. e-mail dated January 3, 2019 Question 5-1) This contract contains item 183.11 Treatment of Contaminated Groundwater, paid by the lump sum. Treatment of groundwater is typically paid under item 183.1, which is paid per gallon. A lump sum pay item for this work puts all the risk on the contractor because of unknown subsurface conditions. The amount of water that needs to be handled and treated on this particular project could be a very large quantity or could be minimal depending on testing and actual field conditions at the time of construction. If the item remains a lump sum, this risk will need to be built into the project which could result in higher than anticipated pricing. We therefore request that the department change the payment of this item to a per gallon price to reduce the risk to the contractor due to these unknown conditions. Response 5-1) The amount of water that needs to be handled is highly dependent on the Contractor’s means and methods as well as the Contractor’s proposed schedule and dewatering system design. The amount of groundwater that requires Treatment of Contaminated Groundwater is dependent on the testing performed by the Contractor, the Contractor’s site management, layout of potential onsite recharge pits, and seasonal fluctuation in groundwater levels. Information on groundwater elevations can be found in the geotechnical report dated December 3, 2015 (A00804-3). Determination of contamination levels of groundwater are to be determined by the Contractor. Basic treatment of groundwater for total suspended solids is included in item 991.1. Item 183.11 is intended to capture the cost of mobilization, operation, and maintenance of the contingency treatment system (if required as determined by the Engineer it is necessary to comply with a Remediation General Permit (RGP)). Question Set 6 Baltazar Construction, Inc. e-mail dated January 4, 2019 Question 6-1) Plan Sheet #10 calls out for the removal of SMH 18B7 & SMH 18B6, removal of existing 42” RCP and two (2) locations to cut & plug RCP. How are these items to be paid? Response 6-1) The removal of the existing SMH’s and existing 42” pipe shall be incidental to Item 140-Bridge Excavation. Cutting and Plugging of the remaining existing 42” SS pipe shall be incidental to other contract items. Question 6-2) Specification page A00802-5 shows the location of 12” RCP at Sta 5+00 – 5+76. Drainage plan sheet #14 calls out for this run to be 12” HDPE. Please clarify. Response 6-2) Refer to updated Response 1, Question Set 1 issued this addendum. PAGE 3 OF 16 Proposal No. 607589-105920 SPRINGFIELD Federal Aid Project Nos. CMQ-003S(182)X & TAP-003S(182)X Construction of the North End Pedestrian Underpass beneath Connecticut River Railroad Between Plainfield Street and Birnie Avenue Responses to Bidder’s Questions Addendum No. 5, March 1, 2019 Question 6-3) Item #997.10 (Railroad track removal and installation) calls out for the disposal and purchase of new material that is not suitable to be reused. Since this is unknown at time of bid, can an allowance be added to the contract to cover the disposal and purchase of new material that may be required? Response 6-3) Response to be provided in a future addendum. Question 6-4) Are railroad flaggers required for this project? If so, how will the contractor be compensated? Response 6-4) Railroad Flaggers will be required for the construction of this project for all operations that are within the railroad right of way. The Contractor will be required to enter into a Railroad Service Agreement with the Railroad Operator (Maine Central Railroad Company c/o Pan Am Railways) for these flagging services (See A00806-32). Payment for flagger services will be made by Contractor. Reimbursement to the Contractor will be provided in accordance with Subsection 7.11. Question 6-5) Where is Item #806.15 to be used on the contract? Response 6-5) Bid item 806.15 – 1 ½ inch Electrical Conduit Type RM –Galvanized Steel is no longer used and is removed from the bid form. PAGE 4 OF 16 Proposal No. 607589-105920 SPRINGFIELD Federal Aid Project Nos. CMQ-003S(182)X & TAP-003S(182)X Construction of the North End Pedestrian Underpass beneath Connecticut River Railroad Between Plainfield Street and Birnie Avenue Responses to Bidder’s Questions Addendum No. 5, March 1, 2019 Question 6-6) Please verify the quantities and locations for Item #804.15 & Item #804.3. These items shown on the drawings appear to have significantly less quantities than what is stated on the bid tab. Response 6-6) Quantity for Item 804.15 confirmed. Quantity for Item 804.3 is reduced. Refer to Document B00420. Question 6-7) Please explain where Item #997.2 is to be used and the exact scope of work it covers. Some of the items of work listed on specification page A00801-263 seem to be duplicated by other bid items. Response 6-7) Response to be provided in a future addendum. PAGE 5 OF 16 Proposal No. 607589-105920 SPRINGFIELD Federal Aid Project Nos. CMQ-003S(182)X & TAP-003S(182)X Construction of the North End Pedestrian Underpass beneath Connecticut River Railroad Between Plainfield Street and Birnie Avenue Responses to Bidder’s Questions Addendum No.