Addendum 3 (2023_1113).pdf

ADDENDUM NO. 3

DATE: November 13, 2023

OWNER: OWNER: City of Covington

PROJECT: Water Reclamation Facility Improvements

C & S PROJECT NO.: C8370.025

ENGINEER: Martin C. Boyd, P.E.

CARTER & SLOOPE, INC.

1031 Stonebridge Parkway Watkinsville, Georgia 30677 Telephone: 706-769-4119 Email: mboyd@cartersloope.com

BID DATE: November 17, 2023 BID OPENING: 10:00 AM Local Time

TO ALL BIDDERS:

DOWNLOADING THIS ADDENDUM THROUGH QUESTCDN IS YOUR ACKNOWLEDGMENT OF

RECEIPT. NO OTHER ACTION IS NECESSARY TO ACKNOWLEDGE RECEIPT. THIS ADDENDUM

FORMS A PART OF THE BID DOCUMENTS WHICH ARE HEREBY MODIFIED IN THE FOLLOWING

RESPECTS:

I. Questions / Answers

1. Question: Please provide specifications for vault access hatches.

Answer: The specifications for access hatches are found in Section 05505, Paragraph 2.2.C.

2. Question: For the Allen-Bradley CompactLogix SCADA PLCs, which model do you intend to be used?

Answer: The Allen-Bradley PLC shall be 1769-L33R Series or equal. The system integrator shall ensure that the selected PLC processor is adequate to handle the number of I/O’s and nodes of the plant SCADA system.

3. Question: Can you please provide a specification for wood frames and doors?

Answer: Only metal frames and doors will be provided on this project so Sheets 54 and 55 have been revised and are attached in this addendum. A hollow metal door and frame should be provided for the bathroom.

4. Question: In reviewing the documents, I do not see any sequence of operations for maintaining the plant in operations during construction. Is there one available?

Answer: A sequencing of operations has not been developed since at this time, we do not have information regarding delivery of equipment and materials; however, the Engineer and the Owner will work with the Contractor to develop one during construction. Several areas of construction must be coordinated with the Owner and accomplished to maintain continuous operation. Constructing the Flow Equalization tank should be a priority since having that volume of storage would allow the Contractor some flexibility mailto:mboyd@cartersloope.com with sequencing work at the Headworks and with the tie-in to the aeration basin.

Temporary by-pass pumping could be used to pump raw sewage to the Flow Equalization tank and it would gravity flow back down to the Headworks.

As for work in the Aeration Basin, none of it is urgent so it can be done at any time.

The Owner will sequence turning off various existing mixers and aerators as needed to facilitate work there, but some mixers and aerators will have to remain online to facilitate biological treatment. Also, see Questions and Answers below on Sheet 2 regarding temporary bypass pumping at the Headworks and screening for some additional guidance.

II. CONTRACT DOCUMENTS AND SPECIFICATIONS

1. Pre-Bid Submittal for Equipment and Materials

In accordance with Section 01300 of the specifications, the following manufacturers have met the pre-bid submittal requirements. Each bidder’s attention is directed to Section 00400, 01025 and 01300 in completing the Bid Form. Listing of equipment herein does not constitute approval. Final approval will be made after bids are received if manufactures below affects the low bids and if materials and equipment are determined to be equal to the specifications based on the pre-submittal received.

A. Section 13400

1. Dexter Fortson Associates, Inc.

Clarification: Dexter Fortson was incorrectly listed in Addendum #2 as meeting the pre-bid submittal requirements for Section 11400. That Section number was a typo. It should have been Section 13400.

2. Sections 00100 – Advertisement A. Refer to Paragraph 1.3. in the 2nd paragraph, change the time allotted for completion of work from “548 calendar days” to “730 calendar days”.

3. Sections 00200 – Instruction to Bidders A. Refer to Paragraph 10.01. Strike the paragraph and replace it with this revised language:

“10.01 The Contract for the Work, as awarded, will be on the basis of materials and equipment specified or described in the Bidding Documents without consideration during the bidding and Contract award process of possible substitute items. In cases in which the Contract allows the Contractor to request that Engineer authorize the use of a substitute item of material or equipment, application for such acceptance may not be made to and will not be considered by Engineer until after the Effective Date of the Contract.”

4. Sections 00520 – Agreement A. Refer to Article 4 – Contract Times, Paragraph 4.02. Change “518 days” to read “700 days” and change “548 days” to read “730 days”.

Clarification: At the request of multiple bidders, the contract time has been extended for substantial completion and final payment. If there are any references to contract times in the contract document and specifications, they should be modified to match the revised dates as specified in this section.

5. Sections 01025 – Measurement and Payment A. Remove and replace this Section with the attached revised Section 01025.

Clarification: QuestCDN would not allow us to make changes to the online bid worksheet in a format that we thought was clear for the Base Bid, Accepted Equal and Substitute pricing for major materials and mechanical equipment. Our solution is to modify the online bid worksheet to allow the contractor to enter a total all-inclusive lump sum price, unit price for unsuitable materials, and allowances. A separate Major Materials and Mechanical Equipment Schedule is attached to this

Addendum #3. The Bidder is to fill this schedule out, circle the named manufacturer used in determining their lump sum bid and upload this schedule with their other bid submittals (by the date and time bids are due – no later). The lump sum will include all costs for the contractor to perform the work plus the costs of furnishing and installing major materials and mechanical equipment and any contractor markup.

6. Sections 07411 – Preformed Roofing A. Insert this attached specification for preformed metal roofing for the flow control structure and the new maintenance building.

7. Sections 07460 – Metal Soffit Panels A. Insert this attached specification for preformed metal roofing for the new maintenance building.

8. Sections 08520 – Aluminum Windows A. Insert this attached specification.

9. Sections 10140 – Signage A. Question: Please clarify if there will be new signage required at the New Maintenance

Building?

Answer: Yes, there will be signage at the New Maintenance Building. Please insert this new Section into the Specifications.

10. Sections 11200, 11210 and 11220 – Mechanical Fine Screen, Screenings Washer Compactor, and Shafted Screw Conveyor A. Refer to Paragraph 1.1.E

Question: Specifications 11220; 11210; and 11220 in Paragraph 1.1.E calls for 480V power supply, and the Gear Motor Drive Mechanism Sections call for 230/460 VAC. Can you please advise on the voltage requirements?

Answer: The equipment is designed to be fed from 480V, 3Ph power source.

11. Sections 11220 – Shafted Screw Conveyor A. Refer to Paragraph 2.2

Question: Paragraph 2.2 calls for a minimum 2 HP for the Screw Conveyor Motors. Drawing, E-102, call for 4HP for Conveyor #1 and 5HP for Conveyor #2. Can you please advise on the Screw Conveyors motor HP?

Answer: The Electrical drawings show the worst case scenario assumption for conveyor motors.

In case the actual conveyor motors will be smaller than shown on the one line, the Electrical system will be able to easily accommodate the load decrease. Otherwise, in case the equipment supplier is anticipating larger motors than shown on the Drawings, the manufacturer shall notify the Engineer prior to bid to evaluate and adjust (if needed) electrical feeder size to equipment control panel.

B. Refer to Paragraph 2.3G Question: Paragraph 2.3G calls for one Main Control Panel and one Local Control Station for the Screw Conveyors. E-102 and E-402 calls for each Screw Conveyor to get a Control Panel.

Can you please advise if each Screw Conveyor is to get a Main Control Panel with a Local Control Station?

Answer: Each screw conveyor system shall be equipped with its own control panel and hand stations to provide additional redundancy for equipment operation. Refer to design drawing E- 601 for additional details.

12. Sections 11300 – Two Stage Odor Control System A. Refer to Paragraph 1.3.B

Question: Paragraph 1.3.B states that the Contractor should “Supply of all odorous air ductwork including flex connectors and damper valves, leading to the blower.” Sheet 24 shows ductwork including flex connector and damper valve between the blower and odor control unit, which per the previously referenced specification is not supplied by the Contractor. In addition to this ductwork there is reducing 90° bend that connects to the inlet side of the blower and some 8” connecting to exiting 8” PVC Odor Control Piping. Please confirm the following items. 1. There are no flex connectors or damper valves on the inlet side of the blower (leading to the blower) as shown on the drawings but are mentioned in the specification. 2. There is no specification for the duct, damper valve, or flex connectors and none will be provided.

Answer: Good practice is to place a flexible connector on the inlet of the blower, so although it is not shown on the Drawings or specified in this section, the Odor Control System manufacture should furnish and supply a flexible connector between the blower inlet piping and the existing piping to be installed by the Contractor. The manufacture will furnish a flex connection per their standard so no specification will be provided. No damper valve is required on the inlet to the blower. Also, to clarify, the air duct piping shown on Sheet 26 in the Air Piping Schematic throughout the Headworks to the Blower is to be reused along with any existing dampers and flex connections. No new air piping is required except for the connection from the new Blower to the existing air piping as shown in this schematic (dark solid line) and as shown on Sheets 24 and 25.

13. Sections 11311 – Vertical Dry Installed Wastewater Pumps A. Refer to Paragraphs 2.5 and 2.6

Question: Paragraphs 2.5 and 2.6 call for one Low Level Back-up Float Switch and one Level Transmitter respectively. E-403 calls for three Float Switches, one Level Transmitter, and one Pressure Transducer in the Wet Well. Can you please advise if the Pump Manufacturer/Contractor is to provide instrumentation per the Specification or per E-403?

Answer: Pumps manufacturer shall supply one (1) float switch and one (1) submersible Pressure Transducer with an Indicating Level Transmitter (tags: LSL-FC-2; PT-FC-1; LIT-FC-1), the other two (2) float switches (LSL-FC-1 and LSH-FC-1) shall be supplied by the selected System Integrator.

14. Section 11311 – Vertical Dry Installed Wastewater Pumps A. Refer to Paragraph 1.7.C. Change “24% chrome” to “ 15% chrome”.

B. Refer to Paragraph 2.1.B. Revise the paragraph to read:

“B. The pump shall be equipped with a minimum 34 HP submersible electric motor, capable to operate on a 460 volt, 3 phases, 60 hertz voltage supply. Larger horsepower motors up to 40 HP are acceptable to ensure non-overloading pump curve.

Clarification: The electrical drawings Sheet E-104 and E-604 have been revised to show a maximum 40HP motor is allowed

C. Refer to Paragraph 2.1.Q. Add the following to the end of the paragraph:

“Epoxy filled cable entry is acceptable.”

D. Refer to Paragraph 2.1.W. Change “Impeller and insert ring: A 532 ALLOY III A (25% chrome)” to read “Impeller and insert ring: A 532 ALLOY IIC or III A (15% minimum chrome)”

E. Refer to Paragraph 2.1.Y. The first line shall read:

“The motor shall be equipped with screened or unscreened cable suitable for submersible pump”

15. Section 14400 – Free Standing Bridge Crane A. Replace this specification with the attached revised Section 14400.

Clarification: Section 1440 is the specification for the crane required in the Maintenance Building only. There is no specification for the single girder/monorail hoist at the Flow Controls Structure.

The design of the monorail and support structure at the Flow Control basin is detailed on Sheet 37 of the Drawings. The electric chain host located at both the new Maintenance Building and the Flow Control Structure are specified in Section 14600.

16. Section 14500 –Bridge Crane A. Strike this entire section from the specifications.

17. Section 14600 –Electric Chain Hoist A. Replace this specification with the attached revised Section 14600. This section specifies the requirements for the hoist located at both the new Maintenance Building and the Flow Control Structure.

III. CONTRACT DRAWINGS

1. Remove and replace the following sheets with the revised attached sheets:

46, 49, 54, 55, E-104 and E-604

2. Sheet 2.

A. Question: Under the “Rehabilitation Scope”, Note 4 states to “Remove existing grout at any leaking joints found and pressure inject Prime Flex 900 XLV or Engineer approved equal…..Apply cementitious repair mortar to pack joint and provide a smooth, uniform surface ready for finish protective coating….”

Please confirm that this work (if required) will be paid for out of the Supplemental Work Allowance since the contractor has no way to determine the scope or price of this work.

Answer: Any of the work described in Note 4 will be paid out of the Supplemental Work Allowance since the scope cannot be determined until the Headworks is taken offline and observed.

B. Question: The Temporary Bypass System notes include some expected items to be included. The extended duration of bypass required for the Headworks rehabilitation will have raw sewage that has not gone through a screen or grit removal, dumping directly into the Aeration Basin. Please confirm if this is acceptable. If not, please provide direction on what additional steps/treatment will be required.

Answer: It is preferred that all raw sewage pass through screen and grit prior to entering the aeration basin. Screening is more essential than grit on a temporary basis so emphasis will be placed on providing screening. The Engineer and the Owner will work with the Contractor during construction and bypass pump planning in sequencing the rehabilitation of the concrete at the Headworks structure to facilitate rehab. One possible solution could be to remove the manual bar screen and prepare this channel for rehab first since it is not regularly used and is a backup to the mechanical screens. This would leave two mechanical bar screens in service. One screen is needed for average daily flow and two screens should handle peak daily flow. Once the new screen is placed into service, raw sewage could be diverted to this channel and a second mechanical screen channel for average and peak daily flows. Also, the Contractor could take one grit channel offline for rehab while leaving the other one in service. Diversion of flows using the gates is acceptable or the Contractor could use temporary measures like sandbags to protect channels from raw sewage flows especially while the gates are being replaced. As a stopgap measure, the Contractor should include money in their costs for cutting and modifying the existing manual bar screen to fit in the bypass channel using some angle iron as support to the concrete walls. This would provide some level of screening should the bypass channel be used.

3. Sheet 14.

A. Question: Please confirm the limits of concrete Rehabilitation and Coating in the Headworks area. Rehabilitation Scope notes on Sheet 2 and 14 indicate rehabilitation for the complete Junction Box, Screen and Grit Structures. Sections 17-20 are inconsistent. Does the entire Headworks Structure (Influent & Splitter Areas, Screen and Bypass Channels, Grit Structure, Effluent Channel) require rehabilitation? Does the existing RAS Metering Box (to be abandoned) required rehabilitation as depicted on Sheet 20 in Section P-P?

Answer: The Existing Junction Box ahead of the Headworks Structure plus the entire Headworks Structure including the Influent & Splitter Areas, Screen and Bypass Channels, Grit Structure, Effluent Channel requires rehabilitation and coating. On the Grit Structure, only the concrete 1 ft below the low water level and to the top of the walls in the circular tank needs rehabilitation and coating (not the areas 1 ft. below the low water level) The Existing Headworks Drain Pump Station and the RAS metering Box do not require rehabilitation or coating. We apologize for the confusion in the Sections views on Sheets 17 – 20 because not all of the bold lines printed correctly.

In the interest of time, we are not re-issuing Sheets 17-20 in this addendum because the areas to be rehabilitated are shown correctly in plan view on Sheet 14 as hatched area. Note that the Existing Odor Control System is also hatched on Sheet 14, but that is because it is to be removed and replaced. No coatings are required at the Odor Control System area where the new Odor Control System is going.

4. Sheet 46.

A. Refer to Access Stair Detail and replace this entire Sheet 46 with a revised Sheet 46.

Clarification: The pre-stressed concrete tank manufacturers need a stand-alone stair system and not have it as a fixed connection to the tank. A 1-inch space should be provided between the stair and the tank wall. The Contractor should furnish and install a checkered aluminum plate sized by the tank manufacture that will have the ability to slide/move over the top of wall and aluminum platform.

5. Sheet 49.

A. Question: There is a shower door depicted at the entry to the shower on Sheet 49. The shower assembly scheduled on plant Sheet P-001 does not have an option for a door, only a shower curtain and rod. What is required here?

Answer: A door is not required. The information in Plan Sheet P-001 governs. Remove Sheet 49 and replace it with the attached revised Sheet 49.

B. Question: There is no information provided for the walls providing the plumbing chase and shower enclosure in the restroom of the new Maintenance Buildings.

Answer: See revised notes on the attached revised Sheet 55.

6. Sheet 52.

A. Question: Does the Maintenance Building Require a Ceiling?

Answer: Yes. Add the following note to this sheet:

“Note: Contractor should furnish and install a plywood ceiling to the trusses in the new Maintenance Building. The plywood ceiling should be equivalent to ½” B/C Yellow Pine Plywood or better grade. Joints should be caulked and ceiling primed and painted with color selected by the Owner. Provide 2 – 22” x 30” access hatches in the ceiling on opposite corners of the building. Trim the access hatch and along the perimeter where the ceiling intersects the walls with 1” x 2” trim caulked and painted.”

B. Question: Specification Section 07210 provides requirements for foamed-in-place insulation installed in open cells and voids on concrete masonry walls. The typical wall section detail on Drawing Sheet No. 52 calls for open cells to be filled with perlite insulation. Which is correct?

Also, please clarify if insulation is only required in the open cells of exterior masonry walls or all masonry walls.

Answer: Strike the phrase “Fill Remaining Cells with Perlite Insulation” on Sheet 52. The Contractor should install the non-expanding foam insulation as specified in Section 07210 in all open cells of all concrete mason units including the exterior masonry walls and interior masonry walls of the electrical room and bathroom.

7. Sheet E-407.

A. Question: Sheet E-407 shows DB-1, DB-8, and DB-9 around the existing operations building.

There is an existing retaining wall there that is not labeled but appears to be in the same location as the light grey line approximately 5 ft outside the building. Will a detail be provided on conduit routing through the retaining wall or is it the intent to install the ductbank under the existing retaining wall footing? Please provide any known information on the existing retaining wall.

Answer: The Engineer will work with the Contractor to make adjustments as needed in the field post-bid to minimize costs and impacts to any conflicts with the retaining wall. Any changes in scope can be paid for using the Supplemental Work Allowance.

END OF ADDENDUM NO. 3

City of Covington C & S Project No. C8370.025 Water Reclamation Facility Improvements August 2023 EJCDC C-410 Copyright © 2007 National Society of Professional Engineers. All rights reserved. Addendum 3

MAJOR MATERIALS AND MECHANICAL EQUIPMENT SCHEDULE

Major Materials and Mechanical Equipment Schedule The following schedule MUST be completed by the Bidder for all Major Materials and Mechanical Equipment as listed. The prices for the Major Materials and Mechanical Equipment used by the Bidder as the basis for determining their Total Base Bid Lump Sum Price as entered on the QuestCDN Bid Worksheet shall be circled by the Bidder.

Dollars & Cents (Not Words)

a. Section 03450 – Prestressed Concrete Storage Tank Manufacturer: __Crom_________________ $ Manufacturer: __Pre Con_______________ $ Manufacturer: _______________________ $

b. Section 09900 - Coatings Manufacturer: _TNEMEC_____________ $ Manufacturer: _Sherwin Williams_______ $ Manufacturer: _PPG__________________ $ Manufacturer: _______________________ $ c.

Sections 11200, 11210, and 11220 – Mechanical Fine Screen, Washer Compactor & Screw Conveyor Manufacturer: __Huber________________ $ Manufacturer: _______________________ $

d. Section 11300 – Odor Control Manufacturer: __Bio Air_______________ $ Manufacturer: _______________________ $ Substitute: Perry Fiberglass Products, Inc. $

e. Section 11311 – Dry-Pit Wastewater Pumps Manufacturer: _Flygt__ _______________ $ Manufacturer: _Goulds________________ $ Manufacturer: _KSB__________________ $ Manufacturer: _Ebara_________________ $

Water Reclamation Facility Improvements August 2023 EJCDC C-410 Copyright © 2007 National Society of Professional Engineers. All rights reserved. Addendum 3

Manufacturer: _______________________ $

f. Section 11400 – Aerator Manufacturer: _Aqua Aerobics__________ $ Manufacturer: _______________________ $

g. Section 11460 – Jet Mixing & Aeration System Manufacturer: _Mixing Systems, Inc. ____ $ Manufacturer: _______________________ $

h. Section 13400 – SCADA Integrator Manufacturer: _MR Systems____________ $ Manufacturer: _Southern Flow__ ________ $ Manufacturer: _C2i___ ________________ $ Manufacturer: _Revere Controls, Inc. _____ $ Manufacturer: Dexter Fortson Associates, Inc. $ Manufacturer: _______________________ $

This Pricing Schedule is submitted by:

Corporation Name:

By:

(Signature -- attach evidence of authority to sign)

Name (typed or printed):

Title:

END OF SECTION

SECTION 01025-1

MEASUREMENT AND PAYMENT

City of Covington C & S Project No. C8370.025 Water Reclamation Facility Improvements August 2023 Addendum 3

SECTION 01025

INDEX

PART 1. GENERAL

1.1 SCOPE OF WORK

1.2 MEASUREMENT OF WORK

1.3 ESTIMATED QUANTITIES – NOT APPLICABLE

1.4 MEASUREMENT OF QUANTITIES

1.5 PROGRESS PAYMENTS

PART 2. PRODUCTS

2.1 STORED MATERIALS

PART 3. EXECUTION

3.1 DESCRIPTION OF IMPROVEMENTS

SECTION 01025-2

City of Covington C & S Project No. C8370.025 Water Reclamation Facility Improvements August 2023 Addendum 3

SECTION 01025

PART 1. GENERAL

1.1 SCOPE OF WORK

A. This Section describes the methods by which measurement will be made of the quantities for which payment will be made for the Project.

B. The project is to be bid as one contract.

C. Defect assessment and non-payment for rejected work.

1.2 MEASUREMENT OF WORK

A. Measurement methods delineated in the individual specification sections complement the criteria of this section. In the event of conflict, the requirements of the individual specification section govern.

B. Work shall be measured by the Engineer or his representative with assistance from the Contractor prior to preparation of a payment request by the Contractor.

C. Unit quantities that are measured in place shall be measured monthly. The Contractor shall give the Engineer a minimum of two days notice for making all required measurements.

D. Materials that must be measured as delivered shall be measured at the time of delivery by the Engineer or his representative; the Contractor shall provide sufficient advance notice so that such measurements can be made.

E. Work completed shall be measured for completion against the schedule of values provided by the Contractor in accordance with the General Conditions. Related work necessary for a complete and operational job, such as relocation of mail boxes, removal of trees, relocation of utilities, graveling / maintaining driveways, field engineering, clearing and grubbing, traffic control, etc., not specifically identified as a pay item shall be included in the unit price bid. No additional payments will be made for such activities.

1.3 ESTIMATED QUANTITIES – NOT APPLICABLE

1.4 MEASUREMENT OF QUANTITIES

A. Measurement by Weight – Concrete reinforcing steel, rolled or formed steel, ductile iron pipe fittings, or other metal shapes will be measured by handbook weights. Welded assemblies will be measured by handbook or scale weight.

B. Measurement by Volume – Measured by cubic dimension using mean length, width and height or thickness.

SECTION 01025-3

City of Covington C & S Project No. C8370.025

C. Measurement by Area – Measured by square dimension using mean length and width or radius.

D. Linear Measurement – Measured by linear dimension, at the item centerline or mean chord.

E. Stipulated Sum/Per Each Measurement – Items measured by weight, volume, area, or linear means or combination, as appropriate, as a completed item or unit of the Work.

1.5 PROGRESS PAYMENTS

A. Progress payments shall be based on percentage of work complete on a lump sum project.

B. Work to be paid for as a “Lump Sum” shall be measured for completion against the

“Schedule of Values” provided by the Contractor. The “Schedule of Values” shall be submitted at the Preconstruction conference and shall include quantities and prices of items aggregating the total “Lump Sum” and will subdivide the work into component parts in sufficient detail to serve as the basis for progress payments during construction.

PART 2. PRODUCTS

2.1 STORED MATERIALS

A. Partial payment shall be made for approved materials stored at the project site, provided invoices for said materials are furnished in accordance with payment request submittal and shop drawings for said materials have been approved. All costs associated with covering and protecting equipment and materials shall be bore by the contractor.

PART 3. EXECUTION

3.1 DESCRIPTION OF IMPROVEMENTS

A. WRF Improvements Lump Sum

The Contractor shall list the lump sum price for furnishing all labor, materials, equipment, and any other appurtenances necessary to modify the existing Water Reclamation Facility as shown in the Drawings and as specified herein, including but not limited to: concrete repair, miscellaneous metals replacement, installing a new mechanical bar screen, removing and replacing existing discharge conveyors and odor control system; constructing a new flow diversion concrete structure with dry pit pumps and weir gates, installing flow meters; designing and constructing a new pre-stressed concrete flow equalization tank, designing and installing aggregate piers, tank mixing and blower system; removing existing floating aerators and installing new floating aerators, rehabbing exiting aerator support structures; new maintenance building and pump building. Work also includes electrial, SCADA, mechanical (including the cost of furnishing all Major Materials and Mechanical

SECTION 01025-4

City of Covington C & S Project No. C8370.025 Water Reclamation Facility Improvements August 2023 Addendum 3

Equipment scheduled), addition of a new emergency backup generator; yard piping, concrete and asphalt paving, valves, coatings, earthwork, fencing, soil erosion and sediment control, NPDES stormwater monitoring and permitting;

mobilization/demobilization, bonds, insurance, and all appurtenances necessary for completion of the work as shown on the Drawings and as specified in the Contract Documents including delivery and storage of materials and equipment, all royalties and taxes applicable.

The cost for furnishing all major materials and mechanical equipment itemized in the schedule shall be included in this lump sum on the QuestCDN Bid Worksheet and the bidder should circle on the Major Materials and Mechanical

Equipment schedule the name of the manufacture/supplier that was used in calculating their lump sum and upload it back to QuestCDN at the time of submitting your bid.

The Owner intends to request a reimbursement from the Georgia Department of Revenue on sales and use taxes paid on equipment purchased for the primary purpose of reducing or eliminating water pollution. The Contractor will include in his lump sum price all costs to assist the Owner and Engineer with completing Forms ST-12 and ST-12(a) including, but not limited to, obtaining the required information from subcontractors and suppliers and submitting completed forms to the Engineer.

B. Major Materials and Mechanical Equipment

The Major Materials and Mechanical Equipment Schedule is part of the

Bidding Documents and shall be completed by the Bidder for all Major

Materials and Mechanical Equipment listed on the schedule and submitted with their bid. The price for the base bid or approved equal materials and mechanical equipment shall be used by the Bidder as the basis for determining the Total Lump Sum Price as described in Paragraph 3.1.A. The Bidder should provide a price for all named materials and equipment. Pricing shall be based on quotations provided to the Bidder at the time of the Bid. If no quotation is received from a listed manufacturer, the Bidder shall leave the price blank. The

Bidder should circle on the Major Materials and Mechanical Equipment schedule the name of the manufacturer/supplier that was used in calculating their lump sum as described in Paragraph 3.1.A.

The Bidder may also offer a price for Substitute materials and equipment. All manufacturers proposing Substitute equipment described in the Technical Specifications shall provide a detailed submittal package to the Engineer at least 15 days prior to the bid date, consisting of all information and details prescribed in the Specifications. Substitute equipment pricing is optional and will be evaluated after the bids are received as defined in the Instruction to Bidders, General Conditions, Supplementary Conditions, and Section 01300 in the Technical Specifications. No requests for substitutions will be accepted after the Bid Opening. NOTE: "Substitute" pricing shall include any associated cost

SECTION 01025-5

City of Covington C & S Project No. C8370.025 Water Reclamation Facility Improvements August 2023 Addendum 3 differences for installation of other work if it differs from the Base Bid equipment and any re-engineering that will be needed for use of "Substitute" materials and equipment in the provided design.

The Price provided in the schedule shall include all items as provided for in the Supplier’s or Manufacturer's (or Manufacturer's Representative's) quotation.

Contractor markup and installation costs shall not be included in the Major

Materials and Equipment Schedule but shall be included in the Contractor's lump sum price entered on the QuestCDN Bid Worksheet for which the work pertains. All Bids are subject to evaluation by the Engineer and it is agreed by the Bidder that the following tabulated and submitted data is made a part of the Bid and shall become part of this contract.

C. Allowances

1. Cash Allowances

a. Spare Parts – The Contractor shall allow the sum of $25,000 for Cash

Allowance for purchasing spare parts in addition to those already specified and required for individual pieces of equipment from Division 11, 13, 14, 15 and 16. The Contractor shall provide coordination, unloading and handling, labor and placement of the spare parts from a list provided by the Engineer.

b. Testing – The Contractor shall allow the sum as listed in the Bid Form for Cash Allowance for concrete testing and soil testing. This allowance may be utilized by the Owner and/or Engineer to pay for any testing required in accordance with Section 01410. No money from this allowance shall be used to pay for any re-testing of failed tests.

The Contractor shall provide coordination and labor to assist the testing company with collection of testing samples on the jobsite. To receive authorization to use Allowance money to pay for testing services, the Contractor must submit invoices from the approved testing agency with the monthly pay request for review and approval.

2. Supplemental Work (Contingency) Allowance

a. The Contractor shall allow the sum as stated in Section 01020 for cash allowance for Supplemental Work Additions (SWA’s) and also known as Contingencies. SWA shall be utilized to incorporate cost changes for any additional authorized work into the Base Bid scope of work up to the amount budgeted above. Contract change orders shall be enforced for contract changes over and above this amount. These SWA’s shall authorize the Contractor to perform addition work, but the Contractor shall perform no work until written authorization has been delivered to the Contractor by the Owner. Contractor should not expect that any allowance will be issued; SWA’s shall be issued at the discretion of the Owner only. Any unused portion of the Supplemental Work Allowance

SECTION 01025-6

City of Covington C & S Project No. C8370.025 Water Reclamation Facility Improvements August 2023 Addendum 3 will be deducted from the contract price at the completion of the project by Change Order.

b. The value of any additional work covered by a SWA shall be determined in one of the following ways as stated in Article 11 of the General Conditions:

i. Where the work involved is covered by unit prices contained in the

Contract Documents, by application of unit prices to the quantities of the item involved (subject to the provisions of General Conditions, paragraph 11.03.

ii. By mutual acceptance of a lump sum by Contractor and the Owner.

iii. On the basis of the cost of the work determined as provided in paragraph 11.01 of the General Conditions plus a Contractor’s fee as provided in paragraph 12.01.C and 11.7 of the General Conditions.

D. Unsuitable Materials

1. Measurement: Quantities for unsuitable materials shall be expressed in cubic yards. Dimensions shall be measured in the field and the quantity shall be calculated from such measured dimensions.

2. Payment: No payment will be made for removal and replacement of unsuitable materials unless the measurement is made by the Engineer or his representative.

Payment shall be made for the quantities determined in the manner specified above. This amount, so paid, shall include compensation in full for furnishing all labor, materials, tools, equipment, services and other work in connection with or incidental to removal of unsuitable materials, hauling offsite to the Owner’s LAS facility, and replacing the volume of unsuitable material removed with #57 stone.

SECTION 07411-1

PREFORMED ROOFING

City of Covington C & S Project No. C8370.025

SECTION 07411

INDEX

PART 1. GENERAL

1.1 RELATED DOCUMENTS

1.2 DESCRIPTION OF WORK

1.3 QUALITY ASSURANCE

1.4 SUBMITTALS

1.5 WARRANTY

1.6 DELIVERY, STORAGE AND PROTECTION

PART 2. PRODUCTS

2.1 ACCEPTABLE MANUFACTURERS

2.2 SYSTEM DESCRIPTION

2.3 MISCELLANEOUS MATERIALS

2.4 AUXILIARY INSULATION MATERIALS

2.5 PANEL FABRICATION

PART 3. EXECUTION

3.1 INSTALLATION

3.2 CLEANING AND PROTECTION

SECTION 07411-2

City of Covington C & S Project No. C8370.025

Water Reclamation Facility Improvements August 2023

Addendum 3

SECTION 07411

PREFORMED ROOFING

1.1 RELATED DOCUMENTS

Drawings and general provisions of Contract, including General and Supplementary

Conditions and Division 1 Specification sections, apply to work of this section.

1.2 DESCRIPTION OF WORK

A. Extent of each type of preformed roofing is indicated on the drawings or by provisions of this section.

B. Types of products required include the following: Architectural standing seam type roof panels, rigid roof insulation, gutters, fascia, related trim, anchoring devices, and accessories for a complete weathertight system.

C. Related products specified elsewhere:

Metal roof deck

1.3 QUALITY ASSURANCE

A. Performance Test Standards: Provide preformed panel systems which have been pretested and certified by manufacturer to provide specified resistance to air and water infiltration and structural deflection and failure when installed as indicated and when tested in accordance with AAMA Standard Test TM-l, "Specification for

Method of Test for Metal Curtain Walls for Water Penetration Using Dynamic

Pressure."

B. Field Measurements: Where possible, prior to fabrication of prefabricated panels, take field measurements of structure or substrates to receive panel system. Allow for trimming panel units where final dimensions cannot be established prior to fabrication.

C. Installer: The installer shall have not less than three years experience in installation of similar systems and shall be accepted in writing by the manufacturer.

D. Industry Standards: Conform to recommendations and details of SMACNA

"Architectural Sheet Metal Manual" and other recognized industry practices.

Fabricate for waterproof and weather-resistant performance.

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City of Covington C & S Project No. C8370.025

Water Reclamation Facility Improvements August 2023

1.4 SUBMITTALS

A. Product Data: Submit manufacturer's product specifications, warranty, standard details, certified product test results, installation instructions and general recommendations, as applicable to materials and finishes for each component and for total system of preformed panels.

B. Samples: Submit two samples, each 12" square, of each exposed finish material.

C. Shop Drawings: Submit small-scale layouts of panels on walls and roofs, and large-scale details of edge conditions, joints, corners, custom profiles, supports, anchorages, flashings, closures, and special details. Distinguish between factory and field assembly work.

1.5 WARRANTY

A. Guarantee finish against failure by cracking, peeling, blistering, chipping of finish, and without chalking in excess of 8 (ASTM D659), and without fading in excess of

5 NBS units for a period of 20 years.

B. Guarantee watertightness of complete system for a period of two years from date of substantial completion. Guarantee shall be executed by the Contractor and

Installer.

1.6 DELIVERY, STORAGE AND PROTECTION

A. Panels shall be factory protected by a strippable film, which shall be removed for installation.

B. Store panel in a clean, dry location. Do not expose panels with protective film to the sun. Stack to prevent damage and to allow for adequate ventilation.

2.1 ACCEPTABLE MANUFACTURERS

A. Available Manufacturers: Architectural Panels Specifications are based upon the following:

1. Berridge Cee-Lock with gasket

2. Perma-Clad Perm-Loc "S"

3. Imetco Snap-Lok

B. Substitutions allowed prior to bids: See Section 00200 Instructions to Bidders.

SECTION 07411-4

City of Covington C & S Project No. C8370.025

Water Reclamation Facility Improvements August 2023

2.2 SYSTEM DESCRIPTION

A. Architectural:

1. Material: 24 gage Galvalume Steel ASTM A792, ASTM A446 Grade C.

2. Finish: Kynar 500 with strippable protective coating.

3. Color: As selected by the Engineer.

4. Seam Spacings: 12"- 18"o.c.

5. Anchors: Concealed to allow for movement and wind uplift.

6. Length: One piece.

7. Trim and Flashing: Matching (all exposed to view). Provide heavier gages where required for condition.

8. Gutter, Downspouts and Fascia: Matching 22 gage steel.

9. Texture: Smooth.

10. Seam Height: 1" to 1½".

2.3 MISCELLANEOUS MATERIALS

A. General: Provide insulating materials to comply with requirements indicated for materials and compliance with referenced standards; in sizes to fit applications indicated, selected from manufacturer’s standard thickness widths and lengths.

B. Provide ice and water shield under preformed roofing. Product shall be elastic flexible sheet flashing of 40 to 60 mils thickness.

C. Roof Plumbing Vents: Locate roof vents in panel pans. Flash with flexible pipe flashing system equal to ITW Buildex "Dektite."

D. Polyisocyanurate Board Roof Insulation: Rigid, cellular thermal insulation with polyisocyanurate closed-cell foam core and manufacturer’s standard facing laminated to both sides; complying with FS HH-I-1972/2, Class 1; aged R-values as designated at mean temperature indicated, after conditioning per RIC/TIMA

Bulletin #281-1; and as follows:

Surface Burning Characteristics: Maximum flame spread of 25.

Thermal Resistivity: Minimum "K" value of 7.0 - 75̊F. Total R-value insulation

10.0.

Thickness: 1.5".

E. Fasteners: Manufacturer’s standard noncorrosive types, with exterior heads gasketed. Fasteners shall be concealed where possible.

F. Accessories: Except as indicated as work of another specification section, provide components required for a complete roofing/siding system, including trim, copings, fascias, gravel stops, mullions, sills, corner units, ridge closures, clips, seam covers, battens, flashings, gutters, louvers, sealants, gaskets, fillers, closure strips and

SECTION 07411-5

City of Covington C & S Project No. C8370.025

Water Reclamation Facility Improvements August 2023 similar items. Match materials/finishes of preformed panels.

G. Bituminous Coating: Cold-applied asphalt mastic, SSPC paint 12, compounded for

15 mil dry film thickness per coat.

H. Roof Curbs: Provide customer roof curbs for all penetrations other than vents to match roof profile and to provide positive drainage.

2.4 AUXILIARY INSULATION MATERIALS

A. Mechanical Anchors: Corrosion-resistant type as recommended by insulation manufacturer for deck type and complying with fire and insurance uplift rating requirements. Uplift rating FM I-90.

2.5 PANEL FABRICATION

A. General: Fabricate and finish panels and accessories at the factory to greatest extent possible, by manufacturer s standard procedures and processes, and as required to fulfill indicated performance requirements which have been demonstrated by factory testing. Comply with indicated profiles and dimensional requirements, and with structural requirements.

B. Required Performances: Fabricate panels and other components of roof system for the following installed performances:

1. Roof Wind Loading: 30 lb. per sq.ft. inward; 15 lb. per sq.ft. outward.

2. Roof Live Loading: 20 lb. per sq.ft.

3. Water Penetration: No significant, uncontrolled leakage at 4 lbs per sq ft pressure with spray test.

4. Air Infiltration: 0.02 cfm per sq.ft. for gross roof/wall areas, with 4 lb. per sq.ft. differential pressure.

C. Apply bituminous coating or other permanent separation materials on concealed panel surfaces where panels would otherwise be in direct contact with substrate materials which are noncompatible or could result in corrosion or deterioration of either material or finishes.

D. Fabricate panels to allow for thermal expansion and contraction without effecting water penetration or air infiltration.

E. Condensation: Fabricate panels for control of condensation, including vapor inclusion of seals and provisions for breathing, venting, weeping and draining.

SECTION 07411-6

City of Covington C & S Project No. C8370.025

Water Reclamation Facility Improvements August 2023

Addendum 3

3.1 INSTALLATION

A. General: Comply with panel fabricator's and material manufacturers' instructions and recommendations for installation, as applicable to project conditions and supporting substrates. Anchor panels and other components of the work securely in place, with provisions for thermal/structural movement. Install panels with concealed fasteners. Separate dissimilar materials by application of coating or underlayment. Where anchoring through rigid roof insulation, provide minimum

4" x 4" galvanized steel bearing plates to prevent compressing insulation.

B. Inspection: Inspect substrate to receive preformed panels. Verify satisfactory condition including soundness, level, and adequate support.

C. Installation Tolerances: Shim and align panel units within installed tolerance of

1/4" in 20'-0" on level/plumb/slope and location/line as indicated, and within 1/8" offset of adjoining faces and of alignment of matching profiles.

D. Insulation: Install insulation over metal roof deck. Mechanically anchor insulation to steel deck to conform to FMI-90 uplift requirements. Install wood nailers at perimeters in accordance with Section 06100. Accurately cut and butt insulation for complete coverings. Install insulation in sequence with roofing such that insulation can be covered by roofing the same day.

E. Underlayment: Install underlayment over insulation lapping joints a minimum of

6". Install ice and water shed at ridge, valleys and paves. Install ice and water shield to weep out the building.

F. Seaming: Complete seaming of panel joints by operation of portable power-driven equipment of type recommended by panel manufacturer.

G. Joint Sealers: Install gaskets, joint fillers and sealants for weatherproof performance of panel systems. Provide types of gaskets and sealants/fillers indicated or, if not otherwise indicated, types recommended by panel manufacturer.

H. No through panel penetrations or perforation shall be made in metal roofing panels.

Anchors shall be concealed except matching pop rivets allowed in fascia and flashings. Flash plumbing vents. Install plumbing vents and flashing boots in panel pans. Do not install in vertical standing seams.

3.2 CLEANING AND PROTECTION

A. Cleaning: Remove temporary protective coverings and strippable films (if any) as each panel is installed. Upon completion of panel installation, clean finished surfaces as recommended by panel manufacturer, and maintain in a clean condition during construction. Protect completed installation from damage.

SECTION 07411-7

City of Covington C & S Project No. C8370.025

Water Reclamation Facility Improvements August 2023

Addendum 3

B. Damaged Units: Replace panels and other components of the work which have been damaged or have deteriorated beyond successful repair by means of finish touch-up or similar minor repair procedures.

SECTION 07460-1

METAL SOFFIT PANELS

City of Covington C & S Project No. C8370.025

SECTION 07460

PART 1 GENERAL

1.1. RELATED DOCUMENTS

1.2. DESCRIPTION OF WORK

1.3. SUBMITTALS

1.4. WARRANTY

PART 2 PRODUCTS

2.1 SYSTEM DESCRIPTION

2.2 MISCELLANEOUS MATERIALS

2.3 PANEL FABRICATION

PART 3 EXECUTION

3.1 INSTALLATION

3.2 CLEANING AND PROTECTION

SECTION 07460-2

City of Covington C & S Project No. C8370.025

Water Reclamation Facility Improvements August 2023

Addendum 3

SECTION 07460

METAL SOFFIT PANELS

PART 1 GENERAL

1.1. RELATED DOCUMENTS

A. Drawings and general provisions of Contract, including General and

Supplementary Conditions and Division 1 Specification sections, apply to work of this section.

1.2. DESCRIPTION OF WORK

A. Extent of each type of metal soffit panels is indicated on the drawings or by provisions of this section.

1.3. SUBMITTALS

A. Product Data: Submit manufacturer's product specifications, standard details, certified product test results, installation instructions and general recommendations, as applicable to materials and finishes for each component and for total system of preformed panels.

B. Samples: Submit two samples, each 12" square, of each exposed finish material.

1.4. WARRANTY

A. Guarantee finish against failure by cracking, peeling, blistering, chipping of finish, and without chalking in excess of 8 (ASTM D659), and without fading in excess of 5 NBS units for a period of ten (10) years.

PART 2 PRODUCTS

2.1 SYSTEM DESCRIPTION

A. Architectural:

1. Material: Minimum 26 gage G90 galvanized steel ASTM A792, ASTM

A446 Grade C.

2. Finish: Silicone polyester finish.

3. Color: As selected by the Engineer.

4. Seam Spacings: 8"-12" o.c.

5. Anchors: Concealed to allow for movement and wind uplift.

6. Length: One piece.

7. Appearance: Flush.

SECTION 07460-3

City of Covington C & S Project No. C8370.025

Water Reclamation Facility Improvements August 2023

Addendum 3

8. Texture: Smooth.

9. Seam Height: 1" to 1½".

2.2 MISCELLANEOUS MATERIALS

A. Fasteners: Manufacturer’s standard noncorrosive types, with exterior heads gasketed. Fasteners shall be concealed where possible.

B. Accessories: Except as indicated as work of another specification section, provide components required for a complete system, including trim, clips, furring channels, sealants, closure strips and similar items. Match materials/ finishes of preformed panels.

2.3 PANEL FABRICATION

A. General: Fabricate and finish panels and accessories at the factory to greatest extent possible, by manufacturer s standard procedures and processes, and as required to fulfill indicated performance requirements which have been demonstrated by factory testing. Comply with indicated profiles and dimensional requirements, and with structural requirements.

B. Required Performances: Fabricate panels and other components of roof system for the following installed performances:

1. Wind Loading: 30 lb. per sq.ft. inward; 15 lb. per sq.ft. outward.

C. Apply bituminous coating or other permanent separation materials on concealed panel surfaces where panels would otherwise be in direct contact with substrate materials which are noncompatible or could result in corrosion or deterioration of either material or finishes.

PART 3 EXECUTION

A. General: Comply with panel fabricator's and material manufacturers' instructions and recommendations for installation, as applicable to project conditions and supporting substrates. Anchor panels and other components of the work securely in place, with provisions for thermal/structural movement. Install panels with concealed fasteners. Separate dissimilar materials by application of coating or underlayment.

B. Installation Tolerances: Shim and align panel units within installed tolerance of

¼" in 20'-0" on level/plumb/slope and location/line as indicated, and within ⅛" offset of adjoining faces and of alignment of matching profiles.

SECTION 07460-4

City of Covington C & S Project No. C8370.025

Water Reclamation Facility…