Addendum No. 1. City of Chicago Department of Water Management Bureau of Engineering Services

Transcription

1 Addendum No. 1 City of Chicago Department of Water Management Bureau of Engineering Services South Water Purification Plant Filter Backwash Controls Replacement DWM PROJECT NO SPECIFICATION NO Below are addendum items for the South Water Purification Plant Filter Backwash Controls Replacement Project #13-202, Specification , for which bids will be opened in the Office of the Department of Procurement Services, Room 103, City Hall Chicago, Illinois 60602, on April 28, 2016, at 11:00 AM Chicago Time. BIDDER WILL ACKNOWLEDGE RECEIPT OF THIS ADDENDUM IN THE SPACE PROVIDED ON THE PROPOSAL PAGE NOTICE OF ADDENDUM April 14, 2016 Book 1 Terms and Conditions for Construction 1. None. Book 2 Instructions and Execution Documents 1. None. Book 3 Technical Specifications 1. Specification Section a. ADD the following paragraph after Paragraph 1.03: 1.04 WARRANTIES CONSTRUCTION. B. The Contractor shall repair or replace defective materials and workmanship during the Contract Period and for one (1) year from the date of Substantial Completion of the project, at no additional cost to the City, when so directed by the Commissioner or the Chief Procurement Officer. Any equipment, materials, and workmanship repaired or replaced shall have the warranty period extended for a SPECIFICATION NO.:

2 period of one (1) additional year from the date of repairs and/or replacements. C. The Contractor shall operate and maintain all Work including, but not limited to, mechanical, electrical, controls, temporary systems, etc., until such time that Substantial Completion is obtained. To achieve Substantial Completion, turn-over of as-built documents, operations and maintenance manuals, and operator training are required to be complete. D. The warranty period for all systems and equipment shall commence at substantial completion of the project, and not at the time of delivery, installation, or initial startup. 2. Specification Section a. DELETE Section in its entirety and REPLACE with the attached revised version of this Section. 3. Specification Section a. ADD the following paragraph after Paragraph 1.07: 1.08 WARRANTIES CONSTRUCTION. B. The Contractor shall repair or replace defective materials and workmanship during the Contract Period and for one (1) year from the date of Substantial Completion of the project, at no additional cost to the City, when so directed by the Commissioner or the Chief Procurement Officer. Any equipment, materials, and workmanship repaired or replaced shall have the warranty period extended for a period of one (1) additional year from the date of repairs and/or replacements. C. The Contractor shall operate and maintain all Work including, but not limited to, mechanical, electrical, controls, temporary systems, etc., until such time that Substantial Completion is obtained. To achieve Substantial Completion, turn-over of as-built documents, operations and maintenance manuals, and operator training are required to be complete. D. The warranty period for all systems and equipment shall commence at substantial completion of the project, and not at the time of delivery, installation, or initial startup. 4. Specification Section a. DELETE paragraph 1.01.A.2 and REPLACE with the following: C. Concrete equipment pads and curbs. SPECIFICATION NO.:

3 b. ADD the following paragraphs after Paragraph 1.02.B: C. SECTION CONCRETE FORMS AND ACCESSORIES D. SECTION CONCRETE REINFORCEMENT c. ADD the following paragraph after Paragraph 1.08: 1.09 WARRANTIES CONSTRUCTION. B. The Contractor shall repair or replace defective materials and workmanship during the Contract Period and for one (1) year from the date of Substantial Completion of the project, at no additional cost to the City, when so directed by the Commissioner or the Chief Procurement Officer. Any equipment, materials, and workmanship repaired or replaced shall have the warranty period extended for a period of one (1) additional year from the date of repairs and/or replacements. C. The Contractor shall operate and maintain all Work including, but not limited to, mechanical, electrical, controls, temporary systems, etc., until such time that Substantial Completion is obtained. To achieve Substantial Completion, turn-over of as-built documents, operations and maintenance manuals, and operator training are required to be complete. D. The warranty period for all systems and equipment shall commence at substantial completion of the project, and not at the time of delivery, installation, or initial startup d. ADD the following paragraph after Paragraph 3.03.A.5: 6. Equipment Pads to receive floor sealer. e. DELETE paragraph 3.03.C and REPLACE with the following: C. Provide 3/4" chamfer on all corners of exposed concrete. f. DELETE paragraph 3.06.C in its entirety. 5. Specification Section a. DELETE paragraph 1.02.B and REPLACE with the following: B. SECTION SELECTIVE DEMOLITION b. ADD the following paragraphs after Paragraph 1.02.B: C. SECTION ASBESTOS REMEDIATION c. DELETE Paragraph 1.06.A and REPLACE with the following: SPECIFICATION NO.:

4 A. Handle and store in a manner prescribed by the manufacturer and in accordance with SECTION DELIVERY, STORAGE AND HANDLING. Avoid damaging materials. d. ADD the following paragraph after Paragraph 1.06: 1.07 WARRANTIES CONSTRUCTION. 6. Specification Section a. DELETE paragraph 1.01.A in its entirety. b. DELETE Paragraph 1.02.B and REPLACE with the following: B. SECTION ASBESTOS REMEDIATION c. DELETE Paragraph 1.07.A.1 and REPLACE with the following: 1. As conditions warrant, demolish Terrazzo at existing joints otherwise create joint parallel to existing joints. d. ADD the following paragraph after Paragraph 1.07: 1.08 WARRANTIES CONSTRUCTION. e. ADD the following paragraph after Paragraph 3.04.D: E. Control and collect water and dust produced by grinding operations. Protect filters and other operating equipment and adjacent construction from detrimental effects of grinding operations. 7. Specification Section a. DELETE Section in its entirety and REPLACE with the attached revised version of this Section. 8. Specification Section a. DELETE paragraph 1.03.B.5 and REPLACE with the following: 5. Submit complete detailed engineering drawings of the Kiosk structure. Detailed drawings will include details of the method used to interconnect wall panels, roof and base assemblies and glazing details. Catalogue cuts and/or promotional literature will not be accepted. Furnish Engineering calculations by a Structural Engineer licensed in the state of Illinois verifying compliance with City of Chicago Building Code Requirements for loads with the Shop Drawing submittal. b. ADD the following paragraph after Paragraph 1.07: SPECIFICATION NO.:

5 1.08 WARRANTIES CONSTRUCTION c. DELETE Paragraph 2.03.A and REPLACE with the following: A. General: Fabricate Kiosk structure from an integrated set of mutually dependent components for assembly on Project site. All materials used must be of the specified materials and equal to approved samples. All work shall be completed in a thorough, workman-like manner by qualified individuals. Structure shall be designed using the design criteria noted below. Structure shall not have any noticeable vibrations or rattles when all systems are in operation nor from wind or thermal effects. No visible or concealed steel pieces shall be unfinished (unpainted). c. ADD the following Paragraph after Paragraph 2.03.I.4: 5. Provide condenser pump for drainage. d. DELETE Paragraph 2.04.D.1 and REPLACE with the following: 1. Locate bottom of controls and operable parts (i.e. electrical outlets, data outlets, phone outlets, light switches and thermostat) no lower than 30 inches and top of controls and operable parts no higher than 42 inches above the floor where reach is unobstructed. Where side reach is obstructed, locate bottom of controls and operable parts no lower than 30 inches and top of controls and operable parts no higher than 42 inches above the floor. Bidders Request for Information Question # 1: Bid Item: G-1, Spec Number: , Drawing Number: N/A, Subject: Haz Waste Generator For existing materials to be demolished, the Contractor will assume the liability for compliance with all the disposal requirements. Will the Department assume the responsibility of the "Generator" for the Haz Waste manifest? Yes. Question # 2: Bid Item: G-1, Spec Number: , Drawing Number: E dwgs, Subject: Hazardous Area Classifications Please identify the hazardous area classifications and there locations in the plant, if any. (i.e. Class I Div. 1, Class 1 Div. 2, etc.) There are not any explosion-proof areas where work will be performed as part of this project. Refer to Contract Drawings E-3 and E-4 for the area classification plans, which identify the Damp, Wet, and Corrosive areas in the Filter Building. SPECIFICATION NO.:

6 Question # 3: Bid Item: G-1, Spec Number: A, Drawing Number: E-94, Subject: Chlorine Systems Equipment The electrical panel schedules provided on drawing E-94 do not appear to have any loads that are critical to the Chlorine systems. Are there other electrical equipment located in the Filter building that feed the Chlorine systems called out in ? No. Question # 4: Bid Item: G-1, Spec Number: , Drawing Number: G-2, Subject: Contractor Laydown Drawing G-2 identifies the location of the Contractor and Commisioner field offices. Can it be assumed that this location would be the general location of the Contractors laydown and storage facilities as well? What would be the approximate size of the laydown allotted to the contractors? Yes. Laydown area will be coordinated during construction. Question # 5: Bid Item: G-1, Spec Number: , Drawing Number: G-2, Subject: Contractor Laydown Drawing G-2 identifies the location of the Contractor and Commissioner field offices. Can it be assumed that this location would be the general location of the Contractors parking area as well? Approximately how many parking spaces will be allotted to the Contractor? For Bidding purposes assume 10 paved parking spaces. Additional parking adjacent to the trailers will also be allowed. Any disturbed areas are to be restored per Specification Question # 6: Bid Item: G-1, Spec Number: , Drawing Number: N/A, Subject: Telephone/Internet Setup Will the Contractor be able to setup T1/phone/fax lines for the onsite office trailers from an existing demarcation point in the plant or will the Contractor need to carry costs for the local telephone carrier to provide new service lines to the site? These services are to be provided independently from the plant. Question # 7: Bid Item: G-1, Spec Number: , Drawing Number: N/A, Subject: Security Access Will the Contractor be responsible for the costs of the background checks and/or the personnel badging required for site access? These costs will be absorbed by the Commissioner. SPECIFICATION NO.:

7 Question # 8: Bid Item: G-1, Spec Number: , Drawing Number: M-2, Subject: Flowmeter Impulse Line Sizes Drawing M-2 Note 5 indicates to remove impulse lines for master backwash and surface wash flow meters. What size are the impulse lines? The size varies, but is small diameter as shown in the Details on the same drawing. Question # 9: Bid Item: G-1, Spec Number: , Drawing Number: M-4, Subject: Detail B Instrument Tubing Please provide scaled drawing or field measurement of instrument tubing to be removed per Detail B. The piping is shown in details on the same drawing. There are no scaled drawings. Question # 10: Bid Item: G-1, Spec Number: , Drawing Number: M-6, Subject: Note 3 Clarification Please confirm whether the Contractor is to assume that all 8 spare isolation valves required to be provided under Note 3 on drawing M-6 will be installed during this Contract. It is likely, however, this will be dependent on what is found during construction. Question # 11: Bid Item: G-1, Spec Number: , Drawing Number: M-7, Subject: Hydraulic System As-Builts Keyed notes 3, 4, and 5 indicate pipe to be demolished. The pipe to be demolished extend beyond the limits of the photos. Please provide as-built drawings or quantities. Piping to be demolished is shown on Contract Drawing M-6. Sections and as-built drawings are not available. Question # 12: Bid Item: G-1, Spec Number: , Drawing Number: M-8, Subject: Hydraulic System As-Builts Keyed notes 3 through 8 indicate pipes, tanks, and appurtenances to be demolished. The pipe to be demolished extend beyond the limits of the photos. Please provide asbuilt drawings or quantities. Piping to be demolished is shown on Contract Drawing M-6. Sections and as-built drawings are not available. SPECIFICATION NO.:

8 Question # 13: Bid Item: G-1, Spec Number: , Drawing Number: M-9, Subject: Exhaust Vent Piping The exhaust vent piping to be demolished for the emergency gas driven pump extends beyond the limits of the photo in Detail U. Please provide as-built drawings or field measurement quantities for this piping. The exhaust vent piping is to be demolished within the room. See Keyed Note 6 on Contract Drawing M-9. Question # 14: Bid Item: G-1, Spec Number: , Drawing Number: N/A, Subject: Access to work throughout the year Spec B.3 lists the number of filters that can be taken out of service during specific times of the year. Please confirm that the Contractor will be allowed to perform work related to this contract unrestricted throughout the year, so long as the work does not impact more filters than the allowed number to be out of service at the times specified and the work does not conflict with SWPP Operations. Confirmed. The details of the ongoing Contractor activities will be coordinated during construction. Question #15: Bid Item: G-1, Spec Number: , Drawing Number: M-14, Subject: Actuator Floor Stands Drawing M-14, Details B & D show 2 different types of actuator floor stand installations of which one type is significantly more expensive. Please advise how many of each type are required so all contractors are bidding on the same quantities. These details are for Filters 81 thru 120. The actual number of installations of each type will be based on the field measurements taken for each filter. Question #16: Bid Item: G-1, Spec Number: , Drawing Number: M-14, Subject: Actuator Floor Stands Please provide make and model number for the floor stands. Provide floor stand compatible with actuator. Question #17: Bid Item: G-1, Spec Number: N/A, Drawing Number: S-1, Subject: General Notes Drawing S-1, General notes. There are 2 note no. 12, 2 note no. 13, and 2 note no. 14. Please correct numbering. Notes should be renumbered 1 through 17. SPECIFICATION NO.:

9 Question #18: Bid Item: G-1, Spec Number: N/A, Drawing Number: S-2, Subject: General Notes Drawing S-2, General notes. Please correct numbering of the notes. Notes should be renumbered 1 through 17. Question #19: Bid Item: G-1, Spec Number: N/A, Drawing Number: S-3, Subject: General Notes Drawing S-3, General notes. Notes 5, 6, and 7 are missing. Please provide. There are no notes that are missing. Notes should be renumbered 1 through 13. Question #20: Bid Item: G-1, Spec Number: N/A, Drawing Number: S-4, Subject: General Notes Drawing S-4, General notes. Notes 8 through 11 are missing. Please provide. There are no notes that are missing. Notes should be renumbered 1 through 11. Question #21: Bid Item: G-1, Spec Number: N/A, Drawing Number: S-4, Subject: Note reference Drawing S-4, Elevation view for the long filter control console new work, in the top left of the section view starting with the words "Once Existing" at the end of the sentence states to see note 6. Note 6 describes reinforcement. Should this reference note 4? Yes, it should reference Note 4. Question #22: Bid Item: G-1, Spec Number: N/A, Drawing Number: S-4, Subject: Rust Removal Drawing S-4, there are notes indicating to cut, grind, and to remove rust. Please advise if these surfaces are to remain bare/uncoated or if they are to be painted. If painted, please provide paint system to be used. Once rust is removed, surfaces should be painted in accordance with Specification Section , Paragraph 3.02.D.1. Question #23: Bid Item: G-1, Spec Number: N/A, Drawing Number: Various, Subject: Color Photos The following color photos we not included in the supplemental information: Dwg. M-2 detail D photo, Dwg. M-9 detail R photo, Dwg. M10 detail F photo, Dwg. M-12 detail E photo. Please provide indicated color photos. These photos will be provided as part of this addendum. SPECIFICATION NO.:

10 Question #24: Bid Item: G-1, Spec Number: , Drawing Number: N/A, Subject: Pressure Washing Gallery Walls Specification section , item 22 indicates that the exposed filter walls are to be pressure washed and refers to specification section for requirements. Specification section is for concrete restoration and does not provide requirements for pressure washing. Please provide specification for pressure washing and the desired finish. This specification section will be re-issued as part of this addendum. Question #25: We would ask that AUMA Electric Actuators SA/SAR be added as an Acceptable Manufacture / Model in Spec Section Page 10 Paragraph 5. AUMA Actuator is the world s largest manufacture of Electric Actuators, its standard features as well as it s Modular and Flexible design allowing it to manipulated and installed in limited access locations easily make the AUMA Actuator perfectly suited for this project. Substitutions of materials are addressed in the Contract Specifications. Question # 26: Referencing Specification Section(s): Paragraph 3.11 E2e, Paragraph 3.12 A.3, and Paragraph 1.06 C2, all refer to the submittal of copies of signed/executed manifests to the Commissioner. Will the City of Chicago, Department of Water Management claim generator status and sign the manifests for the disposal of hazardous waste removed from the South Water Purification Plant site? Yes. SPECIFICATION NO.: