ADDENDUM NO. 1

TO CONTRACT DOCUMENTS

WALWORTH RUN OUTFALL REAPAIR

(WROR)

FOR THE

NORTHEAST OHIO REGIONAL SEWER DISTRICT

April 12, 2012

Consisting of 4 pages and 4 attachments: Attachment A Pre-Bid Conference Slide Show Presentation (17 pages) Attachment B Pre-Bid Conference Attendance Sheet (2 Pages) Attachment C List of Plan Holders (1 Page) Attachment D Prevailing Wages (Specification Booklet Appendix C) ATTENTION BIDDERS: The following, as additions to and modifications in the Contract Documents, will be included in and become a part of any contract that may be executed for the construction of the Walworth Run Outfall Repair, (WROR). Bidders are therefore instructed to take the following into account when rendering any Bid for this work. I. PRE-BID CONFERENCE

A. A pre-bid conference was held on Friday, March 30, 2012 at the Environmental and Maintenance Services Center of the Northeast Ohio Regional Sewer District (NEORSD) located at 4747 East 49th St., Cuyahoga Heights, OH. A list of attendees who signed in at the meeting is included as Attachment B of this Addendum. The meeting convened at 10:00 A.M., and Mr. Doug Lopata, NEORSD PMO-Wade Trim, introduced himself and the following individuals:

Mr. Wilson Rivera NEORSD, SSMO Department Mrs. Nancy Holland NEORSD, Purchasing Department Mrs. Avis Walker NEORSD, Contract Compliance Department Mr. Tim Lauth URS Corporation Mr. Greg Cifra URS Corporation Mr. Ali Parsipour Somat Engineering

B. Mr. Lopata read the following statement as part of the Presentation in Attachment A: “The purpose of this pre-bid conference is to afford the bidders an opportunity to raise questions pertaining to the plans and specifications and for the Owner and Engineer to clarify those points. In addition, certain important specific features of the project will be brought to the attention of the bidders. The plans and specifications stand as issued. Nothing discussed during this meeting or discussed verbally during the bid period will be construed to have changed the intent of these documents. Any potential modifications that may be discussed will not become official until issued in an Addendum to the plans and specifications.”

C. General Information and Highlights from the attached Pre-Bid Presentation

1.) The Bid Opening remains as scheduled on Wednesday April 18, 2012 at 2:00 P.M. at 3900 Euclid Avenue, Cleveland, OH 44115.

2.) The engineer’s estimate for this project is $ 1,985,000.00. 3.) The MBE/WBE requirement for the project is 20%.

D. Mr. Lopata stated that verbal questions would be accepted here at the pre-bid meeting. After the pre-bid meeting, all questions must be submitted to Doug Lopata in writing. They may be sent by email to lopatad@neorsd.org. Answers to questions are considered official only when expressed in writing in an addendum.

E. The meeting was opened to questions from the attendees at the end of the

presentation. The following are the questions and answers from the meeting:

Q1. How will the cofferdam create a water-tight seal at the end/connection points if the existing sheet pile wall and end wall abutments are undercut and form void space at the bottom of the river?

A1. The exact condition of the river bank where the cofferdam sheeting will

connect is not known on either side of the outfall. The Contractor shall take responsibility for these existing conditions and shall include in their bid measures to account for this issue and provide a sealed watertight work area to accomplish the rehabilitation.

Q2. What is the proposed start date for the adjacent trail project?

A2. The unofficial start date is July 2012.

Q3. Can the contractor access the eastern side of outfall to do channel wall repairs?

A3. The contractor shall only access the east side of the outfall for very

minor work activities associated with the rehabilitation work identified in the scope. If the contractor proposes to use this area for more elaborate efforts clearing, grading, and restoration will need to be approved and coordinated with the property owner at no additional cost to the NEORSD.

Q4. What are the existing flow rates through the outfall?

A4. A summary of the existing flow rates and velocities through the outfall are as follows:

1-month 6-hour storm event: Flow Rate: 48 cubic feet per second Max Velocity (at existing weir wall): 4.51 feet per second 4-month 6-hour storm event: Flow Rate: 316 cubic feet per second Max Velocity (at existing weir wall): 8.46 feet per second 6-month 6-hour storm event: Flow Rate: 677 cubic feet per second Max Velocity (at existing weir wall): 10.95 feet per second 1-year 6-hour storm event: Flow Rate: 1230 cubic feet per second Max Velocity (at existing weir wall): 13.35 feet per second 2-year 6-hour storm event: Flow Rate: 1540 cubic feet per second Max Velocity (at existing weir wall): 14.39 feet per second 5-year 6-hour storm event: Flow Rate: 1985 cubic feet per second Max Velocity (at existing weir wall): 15.62 feet per second

F. The following are questions and answers asked subsequent to the meeting:

Q5. Bid item #9 is for additional pile installation 2,000lf (Wood Timber

Piles). Please provide drawing showing location of these piles to be installed. Is this item for new piles or to replace any existing piles that are determined to be no good?

A5. Bid item #9 is for additional wood timber piles as directed by the owner.

These piles are to be driven adjacent to the existing wood timber piles if the Owner determines they are in need of replacement. The current condition of some of the existing wood timber piles is unknown. Wood timber pile condition will be determined upon installation of the cofferdam and dewatering of the work area or once exposed during demolition.

Q6. Both Static Pile Testing (3.3 Static Pile Load Tests) and Dynamic Pile

Testing (3.5 Field Quality Control, Item C.1.) are called for in Section 31 6216 – Steel Piles and in Section 31 6219 –Timber Piles. Are both tests

to be performed, or will one of these methods be selected by the Engineer, or will it be up to the successful bidder to choose one in lieu of the other?

A6. Yes, static pile testing is to be performed by the contractor and the

dynamic pile testing by an independent testing agency. Both of these testing efforts shall be coordinated and paid for by the Contractor.

Q7. In Section 31 4116 –Metal Sheet Piling (cofferdam), there is a required

submittal for “Static Pile Test Reports” listed in Item H under 1.3 submittals; however, static pile load tests are not described under Part 3-Execution, or anywhere else in this specification. Is it required or not?

A7. The “Static Pile Test Reports” listed in Section 31 4116 - Metal Sheet

Piling (cofferdam), in Item H under 1.3 is a typo and is not required as the cofferdam is considered to be a temporary structure.

Q8. The location of the stationing shown on plan S251 and S261 do not

match. The cross sections shown on S261 are not to scale. The quantities involved for the spillway concrete cannot be evaluated since the sections are not to scale. No info is shown on the plans. Please provide additional information.

A8. The drawing S-261 is not to scale, hence, the stationing is approximate

and shown for reference only. The spillway and the outlet channel slab concrete quantities are provided in the bid booklet under bid items 11 and 14.

END OF ADDENDUM NO. 1

ATTACHMENT A Pre-Bid Conference Slide Show Presentation

PRE-BID CONFERENCE

March 30th, 2012

General Project Information� NEORSD Project Manager – Doug Lopata

Phone: (216) 881-6600, Ext. 6445

email: lopatad@neorsd.org

� Contact to Purchase Bid Documents – Nancy Holland Phone: (216) 881-6600, Ext. 6716

� Design Consultant – URS

� Bid Opening – Wednesday April 18th, 2012 - 2:00pm

� Engineer’s Estimate - $1,985,000.00

� Substantial Completion Duration – 365 days

Bidding InformationThe purpose of this pre-bid conference is to afford the bidders an opportunity to raise questions pertaining to the project and for the District to clarify those points. In addition, certain important specific features of the project will be brought to the attention of the bidders. The plans and specifications stand as issued. Nothing discussed during this meeting or in verbal discussions during the bid period will be construed to have changed the intent of the documents. Any potential modifications, which may be discussed, will not become official until issued in an Addendum.

�Equal Employment Opportunity Reports

The bid package includes the Bidders Equal Employment Opportunity Report (EEO). This report requests official information about your company: name, address and person authorized as EEO officer. It includes a statistical breakdown of employees by race and gender, and also includes your company’s employment practices, policies and procedures.

�Minority and Women Business Enterprises

NEORSD’s participation goal for the Walworth Run Outfall Project, is 20% MBE/WBE. District approved MBE/WBE registry is available online. Only those enterprises that are in the NEORSD registry 7 days prior to the date of the bid opening will qualify. For a copy of the registry or if you have questions or concerns, please contact Avis Walker or Tiffany Jordan at (216) 881-6600.

�Prevailing Wages

Please be aware that this construction contract is a prevailing wage contract monitored by Mark Sullivan of the NEORSD. All workers must be paid at the prevailing wage rate. This includes employees for all subcontractors.

Bid Documents

� Volume I – Specifications Booklet

� Front End Documents

� Technical Specifications

� Bid Booklet

� Complete all documents and submit to NEORSD

� Full Size Drawings

� Half Size Drawings

� Cost of one set is $120.00

� (Paid at the NEORSD Purchasing office)

Project Description

� Significant Flow Maintenance;

� Outfall Arch Shotcrete Repair;

� Channel Floor Replacement;

� Channel Side Wall Rehabilitation;

� River Cofferdam Installation;

� Spillway Rehabilitation and Replacement.

Existing Walworth Run Outfall

Arched Culvert Section

Clean and Tuckpoint Stone Headwall

Remove Brick Floor and Replace with Concrete Slab

Clean Brick Lining, Waterproof and Shotcrete Ceiling

Clean Brick Walls, Waterproof and Shotcrete or Cast Concrete Walls

Proposed Walworth Run Outfall Repairs

Proposed Walworth Run Outfall Repairs

WROR Arch Structural Repairs

Clean Brick, Waterproof and Shotcrete or Cast Concrete Walls

WROR Arch Structural Repairs

Portion of Arch to be removed and filled with concrete

Portion of Stone to be repaired with crack injection

Clean Exposed Masonry

Repair Masonry Repoint JointsRemove & Replace

Concrete Cap

Concrete Cap Replacement & Masonry Wall Spot Repair

Demolish Existing Spillway

Masonry Floor

Install New Concrete

Spillway Floor

Spillway Floor Repair

Remove & Replace 2 ft of Concrete End Wall

End Wall Repair

Flow Diversion

Project Constraints� High Frequency of Overflow event through the work area;

� High Flow impact days to account for overflows

� Site access and Coordination with County Towpath project;

� Potential to switch access road locations once building is removed and contaminates removed;

� ACOE restrictions related to Cofferdam;

� Work elements below the river elevation;

� Specific allowance for submerged features;

� Right of entry being obtained by the NEORSD with Ohio Erie Canal Corridor.

Project Access

Access During Trail

Construction

Existing Access

• Questions

• Emailed to lopatad@neorsd.org.

• Addendum #1 – Issued late in the week of April 9th, 2012.

• Addendum documents will be posted to the NEORSD

bidding site with email notifications to the plan holders

• Cut-off date for Questions

• 5:00 pm Tuesday, April 10, 2012

• Bid Opening – 2:00 pm Wednesday April 18, 2012

NEORSD GJM 3900 Euclid Avenue

ATTACHMENT B Pre-Bid Conference Attendance Sheet

ATTACHMENT C List of Plan Holders

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AKRON, OH 4

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ATTACHMENT D Prevailing Wages