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8573 - Bid Invitation - ADDENDUM-NO-2GRANADA SANITARY SEWER IMPROVEMENTS AND LIFT STATION DECOMMISSIONING (CSP No. 8573) ADDENDUM NO. 2 Page 1 CITY OF DENTON GRANADA SANITARY SEWER IMPROVEMENTS AND LIFT STATION DECOMMISSIONING CSP No. 8573 Addendum No. 2. Issue Date: August 12, 2024 Bid Receipt Date: August 14, 2024 This addendum forms part of the contract documents referenced above and modifies the original Contract Documents as indicated below. SPECIFICATIONS 1. Specification 00 00 00 – Table of Contents o The Table of Contents is hereby replaced as attached to this document. 2. Specification 00 42 44 – Unit Price Proposal Form o The unit price proposal form is hereby replaced as attached to this document. 3. Specification 33 01 40 – Liners for Sanitary Sewer Structures o This specification is hereby added to the Project Manual as attached to this document. Effective Date January 2021 City of Denton Table of Contents - CSP 00 00 00 TABLE OF CONTENTS - CSP Page 1 of 4 CITY OF DENTON GRANADA SS IMPROVEMENTS STANDARD CONSTRUCTION SPECIFICATION DOCUMENTS CSP No. 8573 Revised November 23, 2020 Effective January 15, 2021 Addendum No. 2 SECTION 00 00 00 TABLE OF CONTENTS - CSP Division 00 - General Conditions 00 05 16 Addenda - CSP 00 11 19 Invitation to Offerors - CSP 00 21 16 Instructions to Offerors - CSP 00 35 14 Conflict of Interest Affidavit - CSP 00 41 01 Proposal Form - CSP 00 42 44 Unit Price Proposal Form - CSP 00 43 14 Offeror’s Bond - CSP 00 43 38 Proposed Subcontractors Form - CSP 00 43 39 Vendor Compliance to State Law Nonresident Offeror - CSP 00 45 14 Safety Record Questionnaire - CSP 00 45 27 Contractor Compliance with Workers' Compensation Law - CSP 00 45 44 Corporate Resolution of Authorizing Signatories - CSP 00 52 44 Agreement - CSP 00 61 15 Performance Bond - CSP 00 61 16 Payment Bond - CSP 00 61 20 Maintenance Bond - CSP 00 61 26 Certificate of Insurance - CSP 00 72 00 General Conditions 00 73 01 Supplementary Conditions - CSP 00 73 74 Form 1295 – Certificate of Interested Parties - CSP Division 01 - General Requirements 01 11 00 Summary of Work 01 25 00 Substitution Procedures 01 29 76 Stored Materials and Equipment (Materials On Hand) 01 31 19 Preconstruction Meeting 01 31 20 Project Meetings 01 32 16 Construction Progress Schedule 01 32 33 Preconstruction Video 01 33 00 Submittals 01 35 13 Special Project Procedures 01 45 23 Testing and Inspection Services 01 50 00 Temporary Facilities and Controls 01 57 13 Storm Water Pollution Prevention Plan 01 58 13 Temporary Project Signage 01 66 00 Product Storage and Handling Requirements 01 70 00 Mobilization and Remobilization 01 71 23 Construction Staking and Survey 01 74 23 Cleaning 01 77 19 Closeout Requirements 01 78 23 Operation and Maintenance Data 01 78 39 Project Record Documents 00 00 00 TABLE OF CONTENTS - CSP Page 2 of 4 CITY OF DENTON GRANADA SS IMPROVEMENTS STANDARD CONSTRUCTION SPECIFICATION DOCUMENTS CSP No. 8573 Revised November 23, 2020 Effective January 15, 2021 Addendum No. 2 TECHNICAL SPECIFICATIONS TxDOT Standard Specifications for Construction and Maintenance of Highways, Streets and Bridges – 2014 Edition (incorporated by reference) Division 02 – Existing Conditions 02 41 13 Selective Site Demolition 02 41 14 Utility Removal/Abandonment 02 41 15 Paving Removal Division 03 – Concrete 03 00 00 Concrete and Concrete Reinforcing 03 30 00 Cast-In-Place Concrete 03 34 13 Controlled Low Strength Material (CLSM) Division 31 – Earthwork 31 10 00 Site Clearing 31 23 16 Unclassified Excavation 31 24 00 Embankment 31 25 14 Erosion and Sediment Control 31 34 19 Geosynthetic Soil Reinforcement 31 36 00 Gabions 31 37 00 Riprap Division 32 – Exterior Improvements 32 01 17 Flexible Paving Repair 32 01 29 Concrete Repair 32 05 16 Aggregates for Exterior Improvements 32 11 23 Flexible Base Courses 32 12 16 Asphalt Paving 32 13 13 Concrete Paving 32 13 73 Concrete Paving Joint Sealants 32 16 00 Curbs, Gutters, Sidewalks, and Driveways 32 84 00 Irrigation Installation and Restoration 32 93 00 Plantings Division 33 – Utilities 33 01 30 Closed Circuit Television (CCTV) Inspection 33 01 31 Sewer and Manhole Testing 33 01 32 Cleaning of Sewer Mains 33 01 40 Liners for Sanitary Sewer Structures 33 05 05 Utility Trench Excavation, Embedment, and Backfill 33 05 61 Cast-in-Place Concrete Manholes 33 05 62 Precast Concrete Manholes 33 05 81 Frame, Cover, and Grade Rings 33 05 97 Utility Markers/Locators 33 05 98 Location of Existing Utilities 33 14 05 Bolts, Nuts, and Gaskets 33 14 10 Ductile Iron Pipe and Fittings 33 14 11 Polyvinyl Chloride (PVC) Pressure Pipe 33 31 16 Sanitary Sewer Service Connections and Service Lines 00 00 00 TABLE OF CONTENTS - CSP Page 3 of 4 CITY OF DENTON GRANADA SS IMPROVEMENTS STANDARD CONSTRUCTION SPECIFICATION DOCUMENTS CSP No. 8573 Revised November 23, 2020 Effective January 15, 2021 Addendum No. 2 33 32 11 Bypass Pumping of Existing Sewer Systems Division 34 – Transportation 34 71 13 Traffic Control Division 41 – Bulk Material Processing Equipment 41 14 00 Batching Equipment Appendix GC-5.01 Availability of Lands GC-5.03 Subsurface and Physical Conditions GC-5.05 Underground Facilities END OF SECTION To:From: PROJ.: CSP:8573 Item No.Spec. Section No.Description UOM BID QTY Unit Price Extended Price 1 01 70 00 0170.001 - Mobilization LS 1 -$-$ 2 31 23 16 3100.001 - Site Preparation LS 1 -$-$ 3 01 57 13 0157.001 - Storm Water Pollution Prevention Plan (SWPPP >1 Acre)LS 1 -$-$ 4 01 58 13 0158.001 - Temporary Project Sign EA 2 -$-$ 5 31 25 14 3125.010 - Storm Water Pollution Prevention Device Installation LS 1 -$-$ 6 31 25 14 3125.011 - Remove Storm Water Pollution Prevention Devices LS 1 -$-$ 7 01 58 13 0158.001 - Temporary Project Sign EA 2 -$-$ 8 02 41 14 0241.011 - Grout Fill 8" Utility Line LF 420 -$-$ 9 02 41 14 9999.001 - Lift Station Demolition LS 1 -$-$ 10 02 41 14 0241.030 - Remove 8" Utility Line LF 12 -$-$ 11 02 41 14 0241.031 - Remove 10" Utility Line LF 311 -$-$ 12 02 41 14 0241.032 - Remove 12" Utility Line LF 212 -$-$ 13 02 41 14 0241.050 - Remove 4' Utility Manhole EA 4 -$-$ 14 02 41 14 0241.053 - Utility Line Plugging LS 1 -$-$ 15 33 01 30 3301.002 - Post-CCTV Inspection LF 1,663 -$-$ 16 31 37 00 3137.002 - 6" Concrete Riprap SY 177 -$-$ 17 32 01 17 3201.001 - Flexible Paving Repair, Residential SY 654 -$-$ 18 32 01 17 3201.004 - Flexible Paving Repair, Arterial SY 39 -$-$ 19 32 01 17 3201.008 - Temporary Flexible Paving Repair for Utility Trench SY 39 -$-$ 20 32 01 29 3201.009 - Concrete Paving Repair, Residential SY 71 -$ 21 32 11 23 3211.006 - 4" Flexible Base, Type A, GR- 2 SY 354 -$-$ 22 32 16 13 3216.005 - 4" Concrete Sidewalk SY 25 -$-$ 23 32 16 13 3216.016 - 6" Concrete Driveway Approach SY 211 -$-$ 24 32 84 00 3284.002 - Irrigation System Restoration LS 1 2,500.00$2,500.00$ 25 32 93 00 3293.015 - Toposil CY 193 -$-$ 26 32 93 00 3293.016 - Seeding SY 3,459 -$-$ 27 32 31 00 3231.018 - Barbed Wire Fence, Metal Posts LF 50 -$-$ 28 TxDOT Item 540 9999.002 - TxDOT Guard Rail LF 55 -$-$ 29 33 05 05 3305.021 - Trench Safety LF 1,623 -$-$ 30 33 05 61, 33 05 62 3305.126 - 4' Concrete Manhole EA 5 -$-$ SECTION 00 42 44 - UNIT PRICE PROPOSAL FORM - CSP Erica Garcia/Purchasing Dept. Granada Sanitary Sewer Improvements and Lift Station Decommissioning City of Denton - Capital Projects COMPANY NAME 901-B Texas Street Denton, TX 76209 OFFEROR'S APPLICATION - UNIT PRICE PROPOSAL STREET ADDRESS CITY, STATE CONTACT PHONE EMAIL Addendum No. 2 To:From: PROJ.: CSP:8573 Item No.Spec. Section No.Description UOM BID QTY Unit Price Extended Price SECTION 00 42 44 - UNIT PRICE PROPOSAL FORM - CSP Erica Garcia/Purchasing Dept. Granada Sanitary Sewer Improvements and Lift Station Decommissioning City of Denton - Capital Projects COMPANY NAME 901-B Texas Street Denton, TX 76209 OFFEROR'S APPLICATION - UNIT PRICE PROPOSAL STREET ADDRESS CITY, STATE CONTACT PHONE EMAIL 31 33 05 61, 33 05 62 3305.127 - 4' Drop Concrete Manhole EA 1 -$-$ 34 33 05 61, 33 05 62 3305.132 - 4' Extra Depth Concrete Manhole VF 12 -$-$ Addendum No. 2 To:From: PROJ.: CSP:8573 Item No.Spec. Section No.Description UOM BID QTY Unit Price Extended Price SECTION 00 42 44 - UNIT PRICE PROPOSAL FORM - CSP Erica Garcia/Purchasing Dept. Granada Sanitary Sewer Improvements and Lift Station Decommissioning City of Denton - Capital Projects COMPANY NAME 901-B Texas Street Denton, TX 76209 OFFEROR'S APPLICATION - UNIT PRICE PROPOSAL STREET ADDRESS CITY, STATE CONTACT PHONE EMAIL 33 33 05 61, 33 05 62 9999.001 - 4' Shallow Concrete Manhole EA 1 -$-$ 34 33 32 11 3332.001 - Bypass Pumping LS 1 -$-$ 35 33 05 05 3305.019 - Concrete Encasement for Utility Lines CY 13 -$-$ 36 33 05 98 3305.147 - Location of Existing Utilities LS 1 -$-$ 37 33 14 10 3314.050 - 12" DIP Sanitary Sewer Pipe LF 150 -$-$ 38 33 14 10 3314.051 - 12" DIP Sanitary Sewer Pipe, CSS Backfill LF 341 -$-$ 39 33 31 14 3331.046 - 8" PVC Gravity Sewer Pipe, CSS Backfill LF 12 -$-$ 40 33 31 14 3331.053 - 12" PVC Gravity Sewer Pipe LF 937 -$-$ 41 33 31 14 3331.054 - 12" PVC Gravity Sewer Pipe, CSS Backfill LF 226 -$-$ 42 33 31 14 3331.056 - 12" PVC Gravity Sewer Pipe, CLSM Backfill LF 10 -$-$ 43 33 31 16 3331.085 - 4" Sewer Service EA 1 -$-$ 44 34 71 13 3471.001 - Traffic Control MO 4 -$-$ 45 34 71 13 3471.002 - Portable Message Sign WK 4 -$ 46 03 30 00 9999.003 - Drilled Piers and Hardware LS 1 -$-$ $2,500.00 Project Contingency 5%$125.00 $2,625.00 TOTAL PROPOSAL: TOTAL BASE PROPOSAL: Granada Sanitary Sewer Improvements and Lift Station Decommissioning Addendum No. 2 33 01 40 LINERS FOR SANITARY SEWER STRUCTURES Page 1 of 9 CITY OF DENTON GRANADA SS IMPROVEMENTS STANDARD CONSTRUCTION SPECIFICATION DOCUMENTS CSP No. 8573 Revised October 22, 2020 Effective July 1, 2024 Addendum No. 2 SECTION 33 01 40 1 LINERS FOR SANITARY SEWER STRUCTURES 2 PART 1 - GENERAL 3 1.1 SUMMARY 4 A. Section Includes: 5 1. Application of a lining system to concrete utility structures such as manholes, lift 6 station wet wells, junction boxes, or other concrete facilities that may require 7 protection from corrosive materials. 8 a. This covers rehabilitation of existing sanitary sewer structures and newly 9 installed sanitary sewer structures. 10 2. Structures to be lined include all force main discharge manholes, pre-cast manholes, 11 junction structures, lift station wet wells, the manhole preceding a wet well, and any 12 other manhole or structure as specified in the Drawings. 13 B. Related Specification Sections include but are not limited to: 14 1. Division 0 - Bidding Requirements, Contract Forms, and Conditions of the 15 Contract. 16 2. Division 1 - General Requirements. 17 3. Section 33 01 31 – Sewer and Manhole Testing. 18 1.2 PRICE AND PAYMENT PROCEDURES 19 A. Measurement and Payment 20 1. Manholes 21 a. Measurement 22 1) Measured per vertical foot of lining, as measured from the benching to the 23 bottom of the grade rings for new Cast-in-Place manhole installation and 24 from the benching to the bottom of the frame for all types of manhole 25 rehabilitations. 26 b. Payment 27 1) The work performed and materials furnished in accordance with this item 28 and measured as provided under “Measurement” will be paid for at the unit 29 price bid per vertical foot of “Manhole Liner” applied for: 30 a) Various sizes. 31 b) Various types. 32 c. The price bid shall include: 33 1) Removal of roots 34 2) Removal of existing liner 35 3) Eliminating any leaks 36 4) Removal of steps 37 5) Repair/seal connection of the existing frame to chimney 38 6) Repairs of any cracks in the existing structure chimney, corbel (cone), wall, 39 bench, including any replacement of damaged rebar, and pipe 40 7) Surface cleaning and preparation 41 33 01 40 LINERS FOR SANITARY SEWER STRUCTURES Page 2 of 9 CITY OF DENTON GRANADA SS IMPROVEMENTS STANDARD CONSTRUCTION SPECIFICATION DOCUMENTS CSP No. 8573 Revised October 22, 2020 Effective July 1, 2024 Addendum No. 2 8) Furnishing and installing liner as specified by the Drawings 1 9) Hauling 2 10) Disposal of excess material 3 11) Site Clean-up 4 12) Manhole and Invert Cleaning 5 13) Testing 6 2. New Precast Concrete Manholes 7 a. Measurement 8 1) This item is considered subsidiary to Precast Concrete Manhole 9 installation. 10 b. Payment 11 1) The work performed and materials furnished in accordance with this item 12 are subsidiary to the unit price bid per each Precast Concrete Manhole, and 13 per vertical foot of extra depth Precast Concrete Manhole installed. 14 3. Non-Manhole Structures 15 a. Measurement 16 1) Measured per square foot of area where the liner is applied. 17 b. Payment 18 1) The work performed and materials furnished in accordance with this item 19 and measured as provided under “Measurement” will be paid for at the unit 20 price bid per square foot of “Structure Liner” applied. 21 c. The price bid shall include: 22 1) Removal of roots 23 2) Removal of existing liner 24 3) Eliminating any leaks 25 4) Removal of steps 26 5) Repair/seal connection of the existing frame to chimney 27 6) Repairs of any cracks in the existing structure chimney, corbel (cone), wall, 28 bench, including any replacement of damaged rebar, and pipe 29 7) Surface cleaning and preparation 30 8) Furnishing and installing Liner as specified by the Drawings 31 9) Lining of wet well floor in new applications only 32 10) Hauling 33 11) Disposal of excess material 34 12) Site Clean-up 35 13) Manhole and Invert Cleaning 36 14) Testing 37 1.3 REFERENCES 38 A. Definitions 39 1. Lining and coating may be used interchangeably. 40 B. Reference Standards 41 1. Reference standards cited in this Section refer to the current reference standard 42 published at the time of the latest revision date logged at the end of this Section 43 unless a date is specifically cited. 44 2. ASTM International (ASTM): 45 33 01 40 LINERS FOR SANITARY SEWER STRUCTURES Page 3 of 9 CITY OF DENTON GRANADA SS IMPROVEMENTS STANDARD CONSTRUCTION SPECIFICATION DOCUMENTS CSP No. 8573 Revised October 22, 2020 Effective July 1, 2024 Addendum No. 2 a. D543, Standard Practices for Evaluating the Resistance of Plastics to Chemical 1 Reagents. 2 b. D638, Standard Test Method for Tensile Properties of Plastics. 3 c. D695, Standard Test Method for Compressive Properties of Rigid Plastics. 4 d. D790, Standard Test Methods for Flexural Properties of Unreinforced and 5 Reinforced Plastics and Electrical Insulating Materials. 6 e. D4060, Standard Test Method for Abrasion Resistance of Organic Coatings by 7 the Taber Abraser. 8 f. D4414, Standard Practice for Measurement of Wet Film Thickness by Notch 9 Gages. 10 3. The Society for Protective Coatings/NACE International (SSPC/NACE): 11 a. SP 13/NACE No. 6, Surface Preparation of Concrete. 12 b. SP0188, Discontinuity (Holiday) Testing of New Protective Coatings on 13 Conductive Substrates. 14 1.4 ADMINISTRATIVE REQUIREMENTS 15 A. Sequencing 16 1. All paving activities, including any final grade adjustments for manholes outside 17 pavement, shall be completed before Contractor begins lining work. 18 2. After liner installation, Contractor shall wait a minimum of 48 hours to allow the 19 liner material to fully cure before returning the system to normal service. 20 1.5 SUBMITTALS 21 A. Submittals shall be in accordance with Section 01 33 00. 22 B. All submittals shall be approved by the City prior to delivery. 23 1.6 ACTION SUBMITTALS/INFORMATIONAL SUBMITTALS 24 A. Product Data 25 1. Technical data sheet on each product used. 26 2. Material Safety Data Sheet (MSDS) for each product used. 27 3. Technical data sheet and project specific data for repair materials to be top-coated 28 with the lining product including application, cure time, and surface preparation 29 procedures. 30 4. Material and method for repair of leaks or cracks in the structure. This applies to 31 repair work on both existing structures, manholes, and newly installed manholes 32 (including Developer projects) that have been identified with cracks, voids, signs of 33 infiltration, other structural defects, or other related construction damage. 34 B. Certification 35 1. Current documentation from lining product manufacturer certifying Contractor’s 36 training (and/or licensure) as an approved installer and equipment compliance with 37 the Quality Assurance requirements. 38 1.7 CLOSEOUT SUBMITTALS 39 A. Testing Documentation 40 1. Provide test results required in Article 3.7 to City. 41 33 01 40 LINERS FOR SANITARY SEWER STRUCTURES Page 4 of 9 CITY OF DENTON GRANADA SS IMPROVEMENTS STANDARD CONSTRUCTION SPECIFICATION DOCUMENTS CSP No. 8573 Revised October 22, 2020 Effective July 1, 2024 Addendum No. 2 a. Include the following manhole or structure location information: 1 1) Station number. 2 2) GIS ID number, if provided during construction. 3 b. Inspection report of each manhole/structure tested. 4 1.8 MAINTENANCE MATERIAL SUBMITTALS [NOT USED] 5 1.9 QUALITY ASSURANCE 6 A. Qualifications 7 1. Contractor 8 a. Trained by, or have training approved and certified by, the lining product 9 manufacturer for the handling, mixing, application, and inspection of the lining 10 product(s) to be used. 11 b. Initiate and enforce quality control procedures consistent with the lining 12 product(s) manufacturer recommendations and applicable NACE or SSPC 13 standards. 14 1.10 DELIVERY, STORAGE, AND HANDLING 15 A. Storage and Handling Requirements 16 1. Secure and maintain a location to store the material in accordance with Section 01 17 66 00. 18 2. Keep materials dry, protected from weather, and stored under cover. 19 3. Store lining materials between 50 degrees F and 90 degrees F. 20 4. Do not store near flame, heat, or strong oxidants. 21 5. Handle lining materials according to their material safety data sheets. 22 1.11 FIELD CONDITIONS 23 A. Provide confined space entry, flow diversion, and/or bypass plans as necessary to 24 perform the specified work. Active flows shall be diverted with flow through plugs as 25 required to ensure that flow is maintained off the surfaces to be lined. 26 1.12 WARRANTY [NOT USED] 27 PART 2 - PRODUCTS 28 2.1 CITY-FURNISHED PRODUCTS [NOT USED] 29 2.2 EQUIPMENT, PRODUCT TYPES, MATERIALS 30 A. Manufacturers 31 1. Manufacturer List 32 a. SprayWall by Sprayroq, Inc. 33 b. SpectraShield 34 B. Repair and Resurfacing Products 35 1. Compatible with the specified lining product(s) in order to bond effectively, thus 36 forming a composite system 37 2. Used and applied in accordance with the manufacturer’s recommendations 38 33 01 40 LINERS FOR SANITARY SEWER STRUCTURES Page 5 of 9 CITY OF DENTON GRANADA SS IMPROVEMENTS STANDARD CONSTRUCTION SPECIFICATION DOCUMENTS CSP No. 8573 Revised October 22, 2020 Effective July 1, 2024 Addendum No. 2 3. The repair and resurfacing products must meet the following: 1 a. 100 percent solids, solvent-free epoxy grout specifically formulated for epoxy 2 top coating compatibility 3 b. Factory blended, rapid setting, high early strength, fiber reinforced, non-shrink 4 repair mortar that can be toweled or pneumatically spray applied and 5 specifically formulated to be suitable for top coating with the specified lining 6 product used 7 C. Lining Product 8 1. Capable of being installed and curing properly within a manhole or other concrete 9 structure. 10 2. Resistant to all forms of chemical or bacteriological attack found in municipal 11 sanitary sewer systems, and capable of adhering to typical manhole structure 12 substrates. 13 D. 100 Percent Solids, Rigid, Ultra High-build Polyurethane Lining System: 14 1. Application Temperature – 50 degrees F, minimum 15 2. Thickness – 125 mils minimum for newly installed structures. 16 3. Color – Beige 17 4. Compressive Strength, in accordance with ASTM D695 – 19,000 psi minimum 18 5. Tensile Strength, in accordance with ASTM D638 – 7,400 psi minimum 19 6. Hardness, Shore D, in accordance with ASTM D4541 – 90 minimum 20 7. Abrasion Resistance, in accordance with ASTM D4060 CS 17F Wheel – 17.7 mg 21 loss maximum 22 8. Flexural Modulus, in accordance with ASTM D790 – 529,000 psi minimum 23 9. Flexural Strength, in accordance with ASTM D790 – 14,000 psi minimum 24 10. Adhesion to Concrete, mode of failure, in accordance with ASTM D4541 – 25 Substrate (concrete) failure 26 11. Chemical Resistance, in accordance with ASTM D543/G20, all types of service for: 27 a. Municipal sanitary sewer environment 28 b. Sulfuric acid, 70 percent 29 c. Sodium hydroxide, 20 percent 30 E. Multi-layer Modified Polyurea and Polyurethane Lining System: 31 1. Application Temperature – 50 degrees F, minimum 32 2. Thickness – SpectraSheild, 500 mils minimum 33 3. Moisture Barrier and Final Corrosion Barrier 34 a. Color – Pink 35 b. Tensile Strength, in accordance with ASTM D412 – 2550 psi minimum 36 c. Hardness, Shore D, in accordance with ASTM D2240 – 56 minimum 37 d. Abrasion Resistance, in accordance with ASTM D4060 – 20 mg loss maximum 38 e. Percent Elongation, in accordance with ASTM D412 – 269 39 4. Surfacer 40 a. Compressive Strength, in accordance with ASTM D1621 – 100 psi minimum 41 b. Density, in accordance with ASTM D1622 – 5 lbs/cu ft minimum 42 c. Shear Strength, in accordance with ASTM C273 – 230 psi minimum 43 33 01 40 LINERS FOR SANITARY SEWER STRUCTURES Page 6 of 9 CITY OF DENTON GRANADA SS IMPROVEMENTS STANDARD CONSTRUCTION SPECIFICATION DOCUMENTS CSP No. 8573 Revised October 22, 2020 Effective July 1, 2024 Addendum No. 2 d. Closed Cell Content, in accordance with ASTM D1940 – >95% 1 F. Lining Application Equipment 2 1. Manufacturer approved, heated, plural component spray equipment. 3 2. Hard to reach areas, primer application, and touch-up may be performed using hand 4 tools. 5 3. Applicator shall use approved specialty equipment adequate in size, capacity, and 6 number sufficient to accomplish the work in a timely manner. 7 2.3 ACCESSORIES [NOT USED] 8 2.4 SOURCE QUALITY CONTROL [NOT USED] 9 PART 3 - EXECUTION 10 3.1 INSTALLERS 11 A. All installers shall be certified applicators approved by the manufacturers. Applicator 12 shall use adequate number of skilled, trained, experienced workmen for the approved 13 product. 14 3.2 EXAMINATION [NOT USED] 15 3.3 PREPARATION 16 A. Manhole Preparation 17 1. Stop active flows via damming, plugging, or diverting as required to ensure all 18 liquids are maintained below or away from the surfaces to be coated. 19 2. Maintain temperature of the surface to be coated between 40 and 120 degrees F. 20 3. Shield specified surfaces to avoid exposure of direct sunlight or other intense heat 21 source. 22 a. Where varying surface temperatures do exist, lining installation should be 23 scheduled when the temperature is falling versus rising. 24 B. Surface Preparation 25 1. Remove oils, roots, grease, incompatible existing linings, waxes, form release, 26 curing compounds, efflorescence, sealers, salts or other contaminants which may 27 affect the performance and adhesion of the lining to the substrate. 28 2. Remove any steps found in the structure. 29 3. Remove concrete and/or mortar damaged by corrosion, chemical attack, or other 30 means of degradation so only sound substrate remains. 31 4. Surface preparation method, or combination of methods, to be used are high 32 pressure water cleaning, high pressure water jetting, abrasive blasting, shotblasting, 33 grinding, scarifying, detergent water cleaning, hot water blasting, and others in 34 accordance with SSPC SP 13/NACE No. 6. 35 5. All methods used shall be performed in a manner that provides a uniform, sound, 36 clean, neutralized, surface suitable for the specified lining product. 37 6. After completion of surface preparation, inspect for leaks, cracks, holes, exposed 38 rebar, ring and cover condition, invert condition, and inlet/outlet pipe condition. 39 33 01 40 LINERS FOR SANITARY SEWER STRUCTURES Page 7 of 9 CITY OF DENTON GRANADA SS IMPROVEMENTS STANDARD CONSTRUCTION SPECIFICATION DOCUMENTS CSP No. 8573 Revised October 22, 2020 Effective July 1, 2024 Addendum No. 2 7. After defects in the structure have been identified, seal cracks, repair exposed rebar 1 with new rebar to match existing, repair leaks and cracks with grout or other 2 methods approved by the Manufacturer. 3 a. All new rebar shall be embedded in 1 1/2-inch epoxy mastic. 4 b. Replace/seal connection between existing frame and chimney if found loose or 5 not attached. 6 3.4 INSTALLATION 7 A. General 8 1. Perform lining after the sewer line installation/repairs, grade adjustments, and 9 grouting are complete. 10 2. Perform application procedures in accordance with the recommendations of the 11 lining product manufacturer, including environmental controls, product handling, 12 mixing, and application. 13 B. Temperature 14 1. Only perform application if surface temperature is between 40 and 120 degrees F. 15 2. Make no application if freezing is expected to occur inside the manhole within 24 16 hours after application. 17 C. Lining 18 1. Spray apply in accordance with the manufacturer’s recommendation at a minimum 19 film thickness as noted in Section 2.2. 20 2. Apply lining from and including the bench to the bottom of the grade rings for new 21 installations and to the bottom of the frame for rehab projects. 22 3. After walls are coated, remove bench covers and spray bench/trough to at a 23 minimum the same thickness as the walls. 24 4. Apply any topcoat or additional coats within the product’s recoat window. 25 a. Additional surface preparation is required if the recoat window is exceeded. 26 5. Allow a minimum of 3 hours of cure time or be hard to touch before reactivating 27 flow. 28 3.5 REPAIR [NOT USED] 29 3.6 RE-INSTALLATION [NOT USED] 30 3.7 FIELD QUALITY CONTROL 31 A. Each structure will be visually inspected by the City the same day following the 32 application. 33 B. Groundwater infiltration of the system shall be zero. 34 C. All pipe connections shall be open and clear. 35 D. The inspector will check for deficiencies, pinholes, voids, cracks, uncured spots, 36 delamination, and thin spots. Any deficiencies in the liner shall be marked and repaired 37 according to the procedures outlined by the Manufacturer. 38 E. If leaks are detected they will be chipped back, plugged, and coated immediately with 39 protective epoxy resin lining. 40 33 01 40 LINERS FOR SANITARY SEWER STRUCTURES Page 8 of 9 CITY OF DENTON GRANADA SS IMPROVEMENTS STANDARD CONSTRUCTION SPECIFICATION DOCUMENTS CSP No. 8573 Revised October 22, 2020 Effective July 1, 2024 Addendum No. 2 1. Make repair 24 hours after leak detection. 1 F. Lining Thickness Testing 2 1. Wet Film Thickness Testing 3 a. Take wet film thickness gauge measurements in accordance with ASTM D4414 4 at 3 locations within the manhole, 2 spaced equally apart along the wall and 1 5 on the bench. 6 1) Document and attest measurements and provide to the City. 7 2. Thickness Testing for modified polymer liner system 8 a. Upon installation of the Final Corrosion Barrier, insert probe into substrate for 9 depth of system measurement at 3 locations within the manhole, 2 spaced 10 equally apart along the wall and 1 on the bench. 11 1) Document and attest measurements and provide to the City. 12 G. Post Installation Lining Tests 13 1. Holiday Detection Testing 14 a. Holiday Detection test the liner in accordance with NACE SP0188. Mark all 15 detected holidays. Repair all holidays in accordance to coating manufacturer’s 16 recommendations. 17 1) Document and attest all test results and repairs made, and provide to the 18 City. 19 2) Contractor shall mark any location that shows a spark or potential for a 20 pinhole and repair these locations in accordance with manufacturer 21 recommendations. 22 H. Non-Conforming Work 23 1. City reserves the right to require additional testing depending on the rate of failure. 24 a. City will select testing locations. 25 2. Repair all defects according to the manufacturer’s recommendations. 26 3.8 SYSTEM STARTUP [NOT USED] 27 3.9 ADJUSTING [NOT USED] 28 3.10 CLEANING [NOT USED] 29 3.11 CLOSEOUT ACTIVITIES [NOT USED] 30 3.12 PROTECTION [NOT USED] 31 3.13 MAINTENANCE [NOT USED] 32 3.14 ATTACHMENTS [NOT USED] 33 34 35 36 37 33 01 40 LINERS FOR SANITARY SEWER STRUCTURES Page 9 of 9 CITY OF DENTON GRANADA SS IMPROVEMENTS STANDARD CONSTRUCTION SPECIFICATION DOCUMENTS CSP No. 8573 Revised October 22, 2020 Effective July 1, 2024 Addendum No. 2 END OF SECTION 1 2 Revision Log DATE NAME SUMMARY OF CHANGE 3