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WPO202100005 Plan - Submittal (First) 2021-01-25 (2)
CONSTRUCTION SPECIFICATIONS Remediation Measures Ivy Material Utilization Center (MUC) Pond Dam Albemarle County, VA Schnabel Reference No. 20C17048.00 July 24, 2020 Revised November 23, 2020 schnehebeng.cam I',p�o ©Schnabel E N G I N E E R I N G CONSTRUCTION SPECIFICATIONS For ZT I1i 4IF" m, i4 [-r7mm Ivy Material Utilization Center (MUC) Pond Dam Albemarle County, VA July 24, 2020 Revised November 23, 2020 Schnabel Reference No. 20C17048.00 Owner Rivanna Solid Waste Authority 695 Moores Creek Lane Charlottesville, VA 22902 Engineer Schnabel Engineering, LLC 6445 Shiloh Road Alpharetta, Georgia 30005 TABLE OF CONTENTS TECHNICAL SPECIFICATIONS DIVISION 1 - GENERAL REQUIREMENTS 01010 01019 01025 01039 01051 01061 01100 01114 01300 01400 01600 01700 DIVISION 2 - SITE WORK 02000 02050 02100 02111 02201 02209 02222 02275 02935 02936 DIVISION 5 — METALS 05500 DIVISION 15—MECHANICAL Summary of the Work Project Considerations Measurement and Payment Coordination and Meeting Layout of Work and Quantity Surveys Project Permits Construction Sequence Cleanup and Disposal of Waste Material Submittals Quality Control Material and Equipment Project Closeout Mobilization and Demobilization Structure Removal Control of Water Clearing and Grubbing Earthfill Geotextile Excavation Riprap Topsoil Permanent Turf Establishment Metal Fabrications 15110 Gate Valves DIVISION 1 GENERAL REQUIREMENTS DIVISION 1 - GENERAL REQUIREMENTS 01010 Summary of the Work 01019 Project Considerations 01025 Measurement and Payment 01039 Coordination and Meeting 01051 Layout of Work and Quantity Surveys 01061 Project Permits 01100 Construction Sequence 01114 Cleanup and Disposal of Waste Material 01300 Submittals 01400 Quality Control 01600 Material and Equipment 01700 Project Closeout SECTION 01010 SUMMARY OF WORK PART GENERAL 1.1 SECTION INCLUDES A. Project Description. B. Work by Owner. C. Contractor Use of Site. D. Work Sequence. 1.2 PROJECT DESCRIPTION A. Removal of the shed at the outlet end of the principal spillway conduit. B. Opening of the principal spillway gate valve to establish the normal pool. C. Lowering of the existing emergency spillway channel. D. Lowering of the crest of the earthen dam by excavation. 1.3 WORK BY OWNER Not Used. 1.4 CONTRACTOR USE OF SITE A. Use of Site to allow: 1. Owner to have access. 2. Engineer to have access. 1.5 WORK SEQUENCE A. As indicated in Section 01100. PART2 PRODUCTS Not Used. PART 3 EXECUTION Not Used. • END OF SECTION SECTION 01010 20C17048.00 SUMMARY OF WORK 01010-1 SECTION 01019 20C17048.00 SECTION 01019 PROJECT CONSIDERATIONS PART GENERAL 1.1 SECTION INCLUDES A. Cash allowances. B. Schedule of values. C. Application for payment. D. Change procedures. E. Defect assessment. F. Measurement and payment — unit prices. G. Measurement and payment — lump sum. 1.2 RELATED SECTIONS A. Section 01600, Material and Equipment: Product substitutions and options. 1.3 CASH ALLOWANCES A. Not Used. 1.4 SCHEDULE OF VALUES A. Submit Schedule of Values for applicable Payment Items in duplicate within 30 days after date of issuance of purchase order. Use EJCDC 1910-8-E. B. Format: Identify each item with number and title of the major specification Section. C. Revise schedule to list approved Change Orders, with each Application for Payment. 1.5 APPLICATIONS FOR PAYMENT A. Submit one electronic copy of each application for payment. B. Content and Format: Utilize list of Payment Items and Schedule of Values for tabulating items in each Application for Payment. C. Include an updated construction progress schedule. 1.6 CHANGE PROCEDURES A. The Owner or Engineer will advise in writing of minor changes in the Work not involving an adjustment to Project Sum/Price or Contract Time. B. The Owner or Engineer may issue a Proposal Request or Notice of Change which includes a detailed description of a proposed change with supplementary or revised Drawings and Specifications, a change in Contract Time for executing the change with a stipulation of any PROJECT CONSIDERATIONS 01019-1 SECTION 01019 20C17048.00 overtime work required and the period of time during which the requested price will be considered valid. Contractor will prepare and submit an estimate within 7 days. C. The Contractor may propose changes by submitting a Request for Change to the Engineer, describing the proposed change and its full effect on the Work. Include a statement describing the reason for the change, and the effect on the Project Sum/Price and Project Time with full documentation and a statement describing the effect on Work by other Contractors. Document any requested substitutions in accordance with Section 01600 - Materials and Equipment. D. Stipulated Sum/Price Change Order: Shall be based on Proposal Request or Notice of Change (as appropriate) and Contractor's fixed price quotation, or Contractor's request for a Change Order as approved by Engineer. E. Unit Price Change Order: For project unit prices and quantities, the Change Order will be executed on a fixed unit price basis. For unit costs or quantities of units of work which are not pre -determined, execute Work under a Work Directive Change. Changes in Project Sum/Price or Project Time will be computed as specified for Time and Material Change Order. F. Work Change Directive: Owner or Engineer may issue a directive, signed by the Owner, instructing the Contractor to proceed with a change in the Work, for subsequent inclusion in a Change Order. Document will describe changes in the Work, and designate method of determining any change in Project Sum/Price or Project Time. Promptly execute the change. G. Time and Material Change Order: Submit itemized account and supporting data after completion of change. Owner or Engineer will determine the change allowable in Project Sum/Price and Project Time as provided in the Project Manual. H. Maintain detailed records of work done on Time and Material basis. Provide full information required for evaluation of proposed changes, and to substantiate costs for changes in the Work. I. Execution of Change Orders: Owner or Engineer will issue Change Orders for signatures of parties as provided in the Project Manual. 1.7 DEFECT ASSESSMENT A. Replace the Work, or portions of the Work, not conforming to specified requirements. B. If, in the opinion of the Engineer, it is not practical to remove and replace the Work, the Engineer will direct an appropriate remedy and/or adjust payment. 1.8 MEASUREMENT AND PAYMENT - UNIT PRICES A. Authority: Measurement methods are delineated in the individual specification sections. B. Area and Volume Quantities: Contractor shall be responsible for pre- and post -activity surveys used as a basis for measurement. Surveys shall be performed by a registered land surveyor licensed in the Commonwealth of Virginia. Owner or Engineer shall be notified at least 24 hours in advance of surveys for measurement. Compute quantities based on surveyed measurements. Interim Payment Applications may be based on estimated quantities, with final quantities based on survey. The Engineer will review measurements and quantities. PROJECT CONSIDERATIONS 01019-2 SECTION 01019 20C17048.00 C. Unit Quantities: Quantities and measurements indicated in the Payment Item Form are to be used for estimating the value of the purchase order only. Quantities and measurements supplied or placed in the Work shall determine payment. D. Payment Includes: Full compensation for required labor, products, tools, equipment, plant and facilities, transportation, services and incidentals; erection, application or installation of an item of the Work; overhead and profit. 1.9 MEASUREMENT AND PAYMENT— LUMP SUM A. Payment: Payment for Lump Sum Items will be determined in the individual sections. B. Change in Contract Time will not change lump sum prices. Any change in Contract Time due to a change order should incorporate any affect/influence on lump sum items. PART2 PRODUCTS Not Used. PART 3 EXECUTION Not Used. • END OF SECTION PROJECT CONSIDERATIONS 01019-3 SECTION 01025 20C17048.00 SECTION 01025 MEASUREMENT AND PAYMENT PART GENERAL 1.1 SCOPE A. The Quote Form lists each item of the Project for which payment will be made. No payment shall be made for any items other than those listed on the Quote Form. B. Required items of work and incidentals necessary for the satisfactory completion of the work which are not specifically listed in the Quote Form, and which are not specified in this Section to be measured or to be included in one of the items listed in the Quote Form, shall be considered as incidental to the work. The Contractor shall prepare the Quote accordingly. C. Work includes furnishing all labor, equipment, tools and materials, which are not furnished by the Owner and performing all operations required to complete the work satisfactorily, in place, as specified and as indicated within this Project Manual. D. Measurement and payment criteria are applicable to portions of the Work performed under a unit price payment method. E. Measurement and payment criteria are applicable to portions of the Work performed under a lump sum payment method. F. Measurement of quantities. G. Payment of allowances. H. Defect assessment and non-payment for rejected work. 1.2 AUTHORITY A. Measurement and payment 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 shall govern. B. The Owner and Engineer will review measurements and quantities. 1.3 ADDITIONAL WORK AND EXCAVATION LIMITS A. Limits of excavation for most work are shown on the Drawings, or described in the applicable Specification Sections. Where limits of excavation are not shown on the Drawings, or described in the applicable Specification Sections, the limits of excavation are assumed to be: 1. Excavations shall extend to the base of any structure, or bedding for piping, or to the base of subgrade as shown on the Drawings. 2. Excavation will extend horizontally beyond the footprint of the structure, or the projected footprint of piping, a minimum of one foot and maximum of five feet. Excavation in soil will be sloped at 2HA V unless otherwise noted on the construction plans. Excavation in sound rock maybe sloped up to 0.5H:1 V when the rock will sustain that slope in a stable condition. Excavation in disintegrated rock will be sloped at 2HA V. Flatter slopes may be utilized by Contractor for safety or operational concerns. However, flatter excavation slopes will not be compensated. MEASUREMENT AND PAYMENT 01025-1 SECTION 01025 20C17048.00 3. Excavation required for construction of dam and spillways is to be in accordance with Parts 1.3.A.1, 1.3.A.2, as well as the construction plans. 1.4 MEASUREMENT OF QUANTITIES A. Measurement for excavation or removal of materials will be performed with materials in place before work starts. Measurement will be made from the top of the ground, layer, or existing surface to the top of the next layer, or approved excavation limit. B. Measurement for backfilling, placement, or installation of materials will be performed with materials in place after work is completed. Measurement will be made from the limit of approved lines shown on the Drawings or authorized by the Engineer. C. Measurement for area computations will be made in the horizontal projection of the actual surface area. No allowances in the measurement for area computations will be made for slopes, undulations, depressions, or any otherwise un-level surfaces. D. Measurement of items that are measured by the linear foot will be made in the horizontal projection of the actual base or foundation. No allowances in the measurement for linear foot computations will be made for slopes or any otherwise un-level bases or foundations. 1.5 PAYMENT FOR UNIT PRICE ITEMS A. Payment Includes: Full compensation for all required labor, products, tools, equipment, plant, transportation, services and incidentals; erection, application or installation of an item of the Work; overhead and profit. B. Payment shall also fully compensate the Contractor for any other work, which is not specified or shown, but which is necessary to complete the Work that is specified or shown. C. Individual specification sections may list materials, or work included for payment under the unit price quote. Payment shall include, but not be limited to the materials or work listed. D. Final payment for work governed by unit prices will be made on the basis of the actual measurements and quantities accepted by the Owner multiplied by the unit price for Work which is incorporated in or made necessary by the Work. 1.6 PAYMENT FOR LUMP SUM ITEMS A. Payment includes: Full compensation for all required labor, products, tools, equipment, plant, transportation, services and incidentals; erection, application, installation, or testing of an item of the Work; overhead and profit. B. Payment shall also fully compensate the Contractor for any other work, which is not specified or shown, but which is necessary to complete the Work that is specified or shown. C. Individual specification sections may list materials, or work included for payment under the lump sum quote. Payment shall include, but not be limited to materials or work listed. 1.7 DEFECT ASSESSMENT A. Replace the Work, or portions of the Work, not conforming to specified requirements at no additional cost to Owner. MEASUREMENT AND PAYMENT 01025-2 SECTION 01025 20C17048.00 B. If, in the opinion of the Engineer, it is not practical to remove and replace the Work, the Engineer will require one of the following remedies: 1. The defective Work may remain, but the lump sum/unit price will be adjusted to a new lump sum/unit price at the discretion of the Owner. 2. The defective Work will be partially repaired to the instructions of the Engineer, and the lump sum/unit price will be adjusted to a new lump sum/unit price at the discretion of the Owner. C. The individual specification sections may modify these options or may identify a specific formula or percentage lump sum/unit price reduction. D. The authority of the Engineer or Owner to assess the defect and identify payment adjustment is final. 1.8 REGARDING -PAYMENT FOR REJECTED PRODUCTS A. Payment will not be made for any of the following: 1. Products wasted or disposed of in a manner that is not acceptable. 2. Products determined as unacceptable before or after placement. 3. Products not completely unloaded from the transporting vehicle. 4. Products placed beyond the lines and levels of the required Work. 5. Products remaining on hand after completion of the Work. 6. Loading, hauling, and disposing of rejected products. PART 2 PRODUCTS A. Not Used. PART 3 EXECUTION A. Not Used. PART 4 MEASUREMENT AND PAYMENT A. Not Used. • END OF SECTION MEASUREMENT AND PAYMENT 01025-3 SECTION 01039 20C17048.00 SECTION 01039 COORDINATION AND MEETINGS PART GENERAL A. SECTION INCLUDES A. Coordination and project conditions. B. Field engineering. C. Preconstruction meeting. D. Site mobilization meeting. B. RELATED SECTIONS Not Used C. COORDINATION AND PROJECT CONDITIONS A. Coordinate scheduling, submittals, and Work of the various sections of the Project to ensure efficient and orderly sequence of installation of interdependent construction elements, with provisions for accommodating items installed later. B. Coordinate completion and clean-up of Work of separate sections in preparation for Substantial Completion. C. After Owner occupancy of premises, coordinate access to site for correction of defective Work and Work not in accordance vrith the Project Manual, to minimize disruption of Owner's activities. D. FIELD ENGINEERING A. Employ a Land Surveyor registered in the State in which this work is performed and acceptable to Engineer. B. Contractor shall locate and protect survey control and reference points. C. Control datum for survey is that shown on the Construction Plans. D. Verify set -backs and easements; confirm drawing dimensions and elevations. E. Provide field engineering services. Establish elevations, lines, and levels, utilizing recognized engineering survey practices. F. Submit a copy of site drawing and certificate signed by the Land Surveyor that the elevations and locations of the Work are in conformance with the Project Manual. E. SITE MOBILIZATION MEETING A. Engineer or Owner vrill schedule a meeting at the Project site prior to Contractor occupancy. B. Attendance Required: Owner, Engineer, Specialty Consultants, Contractor, Contractor's Superintendent, and major Subcontractors. COORDINATION AND MEETINGS 01039-1 SECTION 01039 20C17048.00 C. Agenda: 1. Use of premises by Owner and Contractor. 2. Owner's requirements. 3. Construction facilities and controls provided by Owner. 4. Temporary utilities provided by Owner. 5. Survey and project layout. 6. Security and housekeeping procedures. 7. Schedules. 8. Application for payment procedures. 9. Procedures for testing. 10. Procedures for maintaining record documents. 11. Inspection and acceptance of equipment put into service during construction period. D. Engineer will record minutes and distribute copies to participants within one week after meeting. E. The Site Mobilization Meeting may be omitted, with the agenda items and participants added to the Preconstruction Meeting, if all parties are in agreement. The Engineer will request input from the Owner and Contractor on omitting the Site Mobilization meeting after the Notice of Award. PART2 PRODUCTS A. Not Used. PART 3 EXECUTION A. Not Used. PART 4 MEASUREMENT AND PAYMENT 4.1 Measurement A. All work required in this section will not be measured for payment. 4.2 Payment A. Compensation to the Contractor for all work required in this section shall be included in the prices in the Quote Form for other items of work. No separate payment to the Contractor will be made for any of the work required in this section. • END OF SECTION COORDINATION AND MEETINGS 01039-2 SECTION 01051 LAYOUT OF WORK AND QUANTITY SURVEYS PART1 GENERAL 1.1 SCOPE SECTION 01051 20C17048.00 A. This specification section covers the procedures and accuracy requirements for survey services for layout of work and field measurement of work quantities to be determined by surveys. 1.2 REQUIREMENTS INCLUDE A. The Contractor shall perform all layout surveys required for the control and completion of the work, all necessary surveys to compute quantities of work performed, and all surveys necessary to generate a complete topographic map of the foundation excavation for geologic mapping. B. The Owner has established primary control to be used by the Contractor for establishing lines and grades required for the work. Horizontal control was established from GPS observations and vertical control was established from a nearby survey monument. Control points consisting of survey nails with caps have been established on site at the locations indicated on the Drawings. Before beginning work, the Contractor shall check and verify the control point(s) established by the Owner and shall advise the Engineer in writing that the point(s) is acceptable or, if unacceptable, the reasons therefore. C. The Contractor shall preserve and maintain primary control points until otherwise authorized. Primary control points damaged or destroyed by the Contractor prior to authorization may be reestablished by the Engineer, and the expense of reestablishment will be deducted from amounts due, or to become due, the Contractor. D. The Contractor shall provide experienced construction surveyors, and survey work shall be under the supervision and direction of a Land Surveyor who is registered in the Commonwealth of Virginia and has a minimum of 5 years responsible charge of construction similar in nature to that required by this Project Manual. The Contractor shall maintain sufficient qualified personnel to perform required surveying work. All survey work performed by the Contractor shall be subject to field and office review by the Engineer. 1.3 SUBMITTALS A. Submittals shall be in accordance with this paragraph and Section 01300: Submittals. B. At least 15 days prior to beginning surveying work, the Contractor shall submit, for review, a complete plan for the surveying required to lay out the work, including methods and timetables for establishing lines and grades. C. At least 15 days prior to beginning surveying work, the Contractor shall submit, for review, a resume of qualifying experience for the registered Land Surveyor who will be responsible for the supervision and direction of Contractor's survey work. At least 15 days prior to changing such responsible individual, a qualifying experience resume for the new individual shall be submitted for approval. LAYOUT OF WORK AND QUANTITY SURVEYS 01051-1 SECTION 01051 20C17048.00 D. At least 10 days prior to beginning surveying work, the Contractor shall submit, for review and resolution as required, results of the Contractor's check on the accuracy of Owner - established primary control. E. All surveys submitted to the Engineer shall be provided in both hard copy and electronic format (pdf with seal and signature will be accepted). The electronic format surveys are to be compatible with AutoCAD 2016 or newer. Contour data shall be provided in polyline format with elevations assigned to each contour and point files shall be included in PNEZD, comma delimited format. All files shall be referenced to the Virginia South State Plane, NAD 1983 coordinate system. 1.4 LAYOUT OF WORK A. From Owner -established primary control point, the Contractor shall establish all lines and grades necessary to control the work, and shall be responsible for all measurements that may be required for execution of the work to the tolerances prescribed in these Specifications or on the Drawings. B. The Contractor shall establish, place, and replace as required, such additional stakes, markers, and other controls as may be necessary for control, foundation mapping, intermediate checks, and guidance of construction operations. The Contractor shall perform additional surveys as required for foundation mapping. 1.5 QUANTITY SURVEYS A. The Contractor shall perform all original ground surveys as required to depict existing conditions prior to construction. These ground surveys shall be performed after the areas are cleared, grubbed, and stripped of topsoil (if applicable). B. The Contractor shall perform all in -progress ground surveys as required to determine the final quantities of work for payment. Ground surveys depicting final excavation grades shall include the final limits of excavation. The Contractor shall perform such surveys and computations as are necessary to determine the quantities of work performed or placed during each progress payment period, and shall perform all surveys necessary for the Engineer to determine final quantities of work in place. C. The Contractor shall notify the Engineer at least 24 hours before performing a survey and, unless specifically waived, surveys shall be performed in the presence of an authorized representative of the Owner or Engineer. 1.6 CONTRACTOR SURVEYS A. Surveys required: 1. Alignment staking. — Each 50 feet on tangent; each 25 feet on curves. 2. Slope staking. — Each 50 feet on tangent; each 25 feet on curves; restake every 10 feet in elevation. 3. Periodic benchmarks every 20 vertical feet shall be established outside footprint of dam along the baseline. 4. Structures — Stake out structures; check prior to and during construction. 5. Cross section. — Original, final, and intermediate as required, for structure sites and other locations as necessary for quantity surveys. LAYOUT OF WORK AND QUANTITY SURVEYS 01051-2 SECTION 01051 20C17048.00 6. 'Record". —As required for structures and other features of the work. 7. Permanent Instrumentation — All monuments and benchmarks with elevations and coordinates. 1.7 RECORDS A. Survey data shall be recorded in accordance with recognized professional surveying standards. Original field notes, computations, and other surveying data shall be recorded in standard survey field books. Notes or data not in accordance with standard formats will be rejected. Illegible notes or data, or erasures on any page of a field book will be considered sufficient cause for rejection of part, or all, of the field book. Therefore, rejection of part, or all, of field book may necessitate resurveying. Corrections by ruling or lining out errors will be satisfactory. 1.8 DEGREE OF ACCURACY A. Degree of accuracy shall be of an order high enough to satisfy tolerances specified for the work and the following: 1. Structure and pipe points shall beset within 0.05 foot, except where installation or operation considerations require tighter tolerances. 2. Cross section points shall be located within 0.1 foot, horizontally and vertically. 3. Vertical elevation surveys shall set within 0.1 foot. 1.9 RELATED SECTIONS A. Section 01300: Submittals PART 2 PRODUCTS 2.1 EQUIPMENT AND MATERIALS A. The Contractor shall furnish all equipment and materials including instruments, stakes, spikes, steel pins, templates, platforms, tools, and other accessories as may be required in laying out any part of the work from the primary control points established by the Engineer and in performing quantity surveys. Instruments shall be accurate and shall be subject to inspection, and any defective instruments, as determined by the Owner, shall be promptly replaced, repaired, or adjusted as required. PART 3 EXECUTION A. Not Used. PART 4 MEASUREMENT AND PAYMENT 4.1 MEASUREMENT A. All work required in this section will not be measured for payment. LAYOUT OF WORK AND QUANTITY SURVEYS 01051-3 SECTION 01051 20C17048.00 4.2 PAYMENT A. Compensation to the Contractor for all work required in this section shall be included in the prices in the Quote Form for other items of work. No separate payment to the Contractor will be made for any of the work required in this section. • END OF SECTION LAYOUT OF WORK AND QUANTITY SURVEYS 01051-4 SECTION 01061 20C17048.00 SECTION 01061 PROJECT PERMITS PART1 GENERAL 1.1 SCOPE A. Comply with all permits issued for this project. 1.2 SUBMITTALS A. Submittals shall be in accordance with this section and Section 01300: Submittals. PART 2 PRODUCTS A. Not Used. PART 3 EXECUTION 3.1 PROJECT PERMITS A. The Owner has obtained applicable permits with the exceptions noted in 3A.C. B. Copies of all permits obtained by the Owner are available from the Owner and shall be displayed on site. C. The Contractor shall obtain all other state and local permits required for the work. Permits required include, but may not be limited to, the following: 1. Notice of Intent (NOI) under National Pollutant Discharge Elimination System (NPDES). 2. Notice of Termination (NOT) under NPDES. 3.2 PROJECT PERMIT COMPLIANCE A. The Contractor shall be fully responsible for compliance with all terms of all project permits in the execution of his work. B. By submission of his quote, the Contractor acknowledges that he will comply with the terms of the permits in the execution of his work. PART 4 MEASUREMENT AND PAYMENT 4.1 MEASUREMENT A. All work required in this section will not be measured for payment. 4.2 PAYMENT A. Compensation to the Contractor for all work required in this section shall be included in the prices in the Quote Form for other items of work. No separate payment to the Contractor will be made for any of the work required in this section. • END OF SECTION PROJECT PERMITS 01061-1 SECTION 01100 20C17048.00 SECTION 01100 CONSTRUCTION SEQUENCE PART GENERAL 1.1 SCOPE Contractor may propose an alternate construction sequence that may better suit their means and methods. Any modifications to the sequence listed below shall be submitted to the Engineer for approval. The Contractor shall submit his proposed construction sequence within 14 days after issuance of the Notice to Proceed by the Engineer. A. Mobilize to site and install erosion and sediment control measures. B. Clear, grub, and strip the areas designated for staging and stockpile. C. Clear, grub, and strip the dam area and limits of proposed work. D. Perform all original ground surveys as required to depict existing conditions prior to construction. E. Install/construct/implement control of water measures necessary to protect the work area. F. Remove the existing shed located at the outlet end of the principal spillway conduit and install riprap shown in the construction drawings. G. Open the principal spillway gate valve to establish the proposed normal pool. H. Excavate the embankment in accordance with the excavation limits shown in the construction drawings and excavate the proposed emergency spillway channel. I. Perform all surveys necessary for the Engineer to determine final quantities of work in place. J. Maintain erosion control and control of water measures throughout the project. K. Establish permanent vegetation, remove erosion control and control of water measures. L. Demobilize from site. 1.2 RELATED SECTIONS A. Section 02110: Clearing B. Section 02111: Clearing and Grubbing C. Section 02140: Control of Water D. Section 02201: Earthfill E. Section 02222: Excavation F. Section 02936: Permanent Turf Establishment 1.3 EROSION AND SEDIMENT CONTROL CONSTRUCTION SEQUENCE 01100-1 SECTION 01100 20C17048.00 A. The Contractor shall install the erosion and sediment control measures necessary prior to beginning any land disturbing activities on the site. The Contractor shall submit to the Engineer his plan for sequencing of site activities and the installation of erosion and sediment control measures at least 7 days prior to any site disturbance. 1.4 WATER CONTROL A. Contractor is responsible for maintaining and controlling surface water and ground water in the work site. The maintenance and control of water is to be performed such that the work required to be completed by the Contractor can be done in a safe and acceptable manner. PART 2 EXECUTION A. Not Used. PART 3 MEASUREMENT AND PAYMENT A. Not Used. • END OF SECTION CONSTRUCTION SEQUENCE 01100-2 SECTION 01114 CLEANUP AND DISPOSAL OF WASTE MATERIALS PART GENERAL 1.1 SCOPE SECTION 01114 20C17048.00 A. The Contractor shall be responsible for the cleanup and disposal of waste materials and rubbish located within the project limits and that are generated by the Contractor due to his operation. The disposal of waste materials and rubbish shall be in accordance with applicable Federal, State, and local laws and regulations, with applicable requirements of OSHA, Construction Safety and Health Regulations, and with the requirements of this paragraph. Should a conflict exist in the requirements for cleanup and disposal of waste materials, the most stringent requirement shall apply. 1.2 CLEANUP A. The Contractor shall keep work and storage areas free from accumulations of waste materials and rubbish, and before completing the work, shall remove all storage facilities, buildings, including concrete footings and slabs, rubbish, unused materials, concrete forms, and other like materials, which are not a part of the permanent work. Contractor shall provide trash receptacles throughout the project site. Rubble and debris resulting from the required excavation activities on site may be disposed of in the designated spoil/disposal area. B. Upon completion of the work, and following removal of construction facilities and required cleanup, work areas shall be regraded, reclaimed and left in a neat manner conforming to the natural appearance of the landscape. 1.3 DISPOSAL OF HAZARDOUS MATERIALS A. Hazardous materials, as defined by 40 CFR 261.3; Federal Standard No. 313, as amended; or other Federal, State, or local laws or regulations, used by the Contractor or discovered in work or storage areas, shall be disposed of in accordance with these specifications and applicable Federal, State, and local laws and regulations. Waste materials that may be hazardous shall be tested, and the test results shall be submitted to the Engineer for review. B. Waste materials known or found to be hazardous shall be disposed of in approved treatment or disposal facilities. Hazardous wastes shall be recycled whenever possible. A copy of the hazardous waste manifest shall be sent to the Engineer and Owner. C. Waste materials discovered at the construction site that were on site prior to the Contractor starting work shall immediately be reported to the Engineer. The Engineer will then report to the Owner. If the waste is hazardous, the Engineer or Owner may order delays in the time of performance or changes in the work, or both. If such delays or changes are ordered, an equitable adjustment will be made to the schedule or cost of the work. 1.4 DISPOSAL OF OTHER WASTE MATERIALS A. General 1) Waste materials including, but not restricted to, refuse, garbage, sanitary waste, chemical additives, industrial wastes, and oil and other petroleum products, shall be disposed of by the Contractor by removal from the construction area. B. Disposal by burning CLEANUP AND DISPOSAL OF WASTE MATERIAL 01114-1 SECTION 01114 20C17048.00 1) The Contractor shall secure all necessary burning permits from the State and local authorities. All burning shall be in accordance with Federal, State, and local laws and regulations governing fire protection and air pollution. 2) All materials to be burned shall be piled in designated burning areas in such a manner as to cause the least risk of fire hazards. Burning shall be thorough and complete, and all charred pieces remaining after burning shall be removed from the burning area and disposed of as otherwise provided in this section. In no case shall unapproved materials, such as tires, plastics, rubber products, asphalt products, hazardous materials, or other materials that create heavy black smoke or noxious or nuisance odors be burned. 3) The Contractor shall, at all times, take precautions to prevent fire from spreading beyond the piles being burned, and shall be responsible for all damages resulting from burning operations under these specifications. The Contractor shall have available, at all times, suitable equipment and supplies for use in preventing and suppressing fires, and shall be subject to all laws and regulations locally applicable for pre -suppression, suppression, and prevention of fires. C. Disposal by removal 1) Waste materials to be disposed of by removal from the construction area shall be removed prior to completion of the work under these specifications. All materials removed shall become the property of the Contractor. When trash receptacles are full, they shall be emptied with the contents disposed in accordance with the requirements of this section. 2) Where waste materials are to be dumped, they shall be dumped only at a state approved dumpsite or landfill. The Contractor shall make any necessary arrangements with private parties and county officials pertinent to locations and regulations of such dumping, and shall pay any fees or charges required for such dumping. 1.5 RELATED SECTIONS A. Section 02111: Clearing and Grubbing. B. Section 02222: Excavation PART2 PRODUCTS A. Not Used. PART 3 EXECUTION A. Not Used PART 4 MEASUREMENT AND PAYMENT 4.1 MEASUREMENT A. All work required in this section will not be measured for payment. CLEANUP AND DISPOSAL OF WASTE MATERIAL 01114-2 SECTION 01114 20C17048.00 4.2 PAYMENT A. No separate payment will be made to the Contractor for any of the work required in this section. Compensation shall be included in the prices in the Quote Form for other related items. • END OF SECTION CLEANUP AND DISPOSAL OF WASTE MATERIAL 01114-3 SECTION 01300 SUBMITTALS PART GENERAL 1.1 SECTION INCLUDES SECTION 01300 20C17048.00 A. Submittal procedures. B. Construction progress schedules. C. Proposed Products list. D. Submittals of Product Data, Shop Drawings, Samples, Test Reports, Certificates. E. Manufacturer's instructions. F. Manufacturer's field reports. 1.2 RELATED SECTIONS A. Section 01700, Project Closeout: Warranties, bonds, manufacturers' certificates, and closeout submittals. 1.3 REFERENCES A. AGC (Associated General Contractors of America) publication "The Use of CPM in Construction - A Manual for General Contractors and the Construction Industry". 1.4 SUBMITTAL PROCEDURES A. Transmit each submittal by due date referenced in the individual specification sections. B. Sequentially number the transmittal form. Revise submittals with original number and a sequential alphabetic suffix. C. Identify Project, Contractor, Subcontractor or supplier; pertinent drawing and detail number, and specification section number, as appropriate. D. Apply Contractor's stamp, signed or initialed, certifying that review, approval, verification of Products required, field dimensions, adjacent construction Work, and coordination of information is in accordance with the requirements of the Work and Project Manual. E. Schedule submittals to expedite the Project, and deliver to Engineer via electronic mail to the address provided on the Construction Plans. Coordinate submission of related items. F. Allow 21 days for each submittal for review, excluding delivery time from and to the Contractor. G. Identify variations from the Project Manual and Product or system limitations which may be detrimental to successful performance of the completed Work. H. Provide space for Contractor and Engineer review stamps. I. When revised for resubmission, identify all changes made since previous submission. SUBMITTALS 01300-1 SECTION 01300 20C17048.00 J. Distribute copies of reviewed submittals as appropriate. Instruct parties to promptly report any inability to comply with requirements. K. Submittals not requested will not be recognized or processed. 1.5 CONSTRUCTION PROGRESS SCHEDULES A. Submit initial schedule in duplicate within 20 days after date of issuance of the Purchase Order. B. Revise and resubmit as required as requested by Owner or Engineer. C. Submit revised schedules with each Application for Payment, identifying changes since previous version. D. Submit a horizontal bar chart with separate line for each major portion of Work or operation, identifying first work day of each week. E. Show complete sequence of construction by activity, identifying Work of separate stages and other logically grouped activities. Indicate the early and late start, early and late finish, float dates, and duration. F. Indicate estimated percentage of completion for each item of Work at each submission. G. Indicate submittal dates required for shop drawings, product data, samples, and product delivery dates. 1.6 PROPOSED PRODUCTS LIST A. Submit list of all products to be used on project that will require a review by the Engineer. B. List will be submitted with initial progress schedule. 1.7 SUBMITTALS OF PRODUCT DATA, SHOP DRAWINGS, OR SAMPLES A. Submittals For Review: 1. Submitted to Engineer for review for the limited purpose of checking for conformance with information given and the design concept expressed in the Project Manual. 2. After review, provide copies and distribute in accordance with Submittal Procedures article above and for record documents purposes described in Section 01700 - Project Closeout. B. Submittals For Information: 1. Submitted for the Engineer's knowledge as project administrator or for the Owner. C. Submittals For Project Close-out: 1. Submitted for the Owner's benefit during and after project completion. D. Submittal Quantities: 1. Product Data: Submit electronic PDF file. If electronic copies cannot be produced, submit the number of hard copies which the Contractor requires, plus 2 copies which will be retained by the Engineer and distributed to the Owner. 2. Shoo Drawings: Submit electronic PDF file or two hard copy prints. SUBMITTALS 01300-2 SECTION 01300 20C17048.00 3. Samples: Submit quantity as identified in the individual specification sections, or two samples (to be retained by the Engineer) if no quantity is specified. E. Mark each copy to identify applicable products, models, options, and other data. Supplement manufacturers' standard data to provide information specific to this Project. F. After review, distribute in accordance with the Submittal Procedures article above and provide copies for record documents described in Section 01700 - Project Closeout. 1.8 TEST REPORTS A. Submit for the Engineer's knowledge as project administrator or for the Owner, in quantities specified for Product Data. B. Submit test reports for information for the limited purpose of assessing conformance with information given and the design concept expressed in the Project Manual. 1.9 CERTIFICATES A. When specified in individual specification sections, submit certification by the manufacturer, instal lation/application subcontractor, or the Contractor to Engineer, in quantities specified for Product Data. B. Indicate material or Product conforms to or exceeds specified requirements. Submit supporting reference data, affidavits, and certifications as appropriate. C. Certificates may be recent or previous test results on material or Product, but must be acceptable to Engineer. 1.10 MANUFACTURER'S INSTRUCTIONS A. When specified in individual specification sections, submit printed instructions for delivery, storage, assembly, installation, adjusting, and finishing, to Engineer for delivery to owner in quantities specified for Product Data. B. Indicate special procedures, perimeter conditions requiring special attention, and special environmental criteria required for application or installation. 1.11 MANUFACTURER'S FIELD REPORTS A. When individual specifications require material/product suppliers or manufacturers to provide qualified staff to observe construction activities, such staff will provide a field report of observations. B. Field reports to be submitted to Engineer for review no later than 3 days after observations of construction activities. PART 2 PRODUCTS A. Not Used. PART 3 EXECUTION A. Not Used. • END OF SECTION SUBMITTALS 01300-3 SECTION 01400 QUALITY CONTROL PART1 GENERAL 1.1 SECTION INCLUDES SECTION 01400 20C17048.00 A. Quality assurance - control of installation. B. Tolerances. C. References and standards. D. Inspecting and testing laboratory services. E. Manufacturer field services. 1.2 RELATED SECTIONS A. Section 01300, Submittals: Submission of manufacturers' instructions and certificates B. Section 01600, Material and Equipment: Requirements for material and product quality 1.3 QUALITY ASSURANCE - CONTROL OF INSTALLATION A. Monitor quality control over suppliers, manufacturers, Products, services, site conditions, and workmanship, to produce Work of specified quality. B. Comply with manufacturers' instructions, including each step in sequence. C. Should manufacturers' instructions conflict with the Project Manual, request clarification from Engineer before proceeding. D. Comply with specified standards as minimum quality for the Work except where more stringent tolerances, codes, or specified requirements indicate higher standards or more precise workmanship. E. Perform Work by persons qualified to produce required and specified quality. F. Verify that field measurements are as indicated on shop drawings or as instructed by the manufacturer. G. Secure Products in place with positive anchorage devices designed and sized to withstand stresses, vibration, physical distortion, or disfigurement. 1.4 TOLERANCES A. Monitor fabrication and installation tolerance control of Products to produce acceptable Work. Do not permit tolerances to accumulate. B. Comply with manufacturers' tolerances. Should manufacturers' tolerances conflict with the Project Manual, request clarification from Engineer before proceeding. C. Adjust Products to appropriate dimensions; position before securing Products in place. QUALITY CONTROL 01400-1 SECTION 01400 20C17048.00 1.5 REFERENCES AND STANDARDS A. For Products or workmanship specified by association, trade, or other consensus standards, comply with requirements of the standard, except when more rigid requirements are specified or are required by applicable codes. B. Conform to reference standards by date of issue current on date of Owner -Contractor Agreement, except where a specific date is established by code. C. Obtain copies of standards where required by individual specification sections. D. Neither the contractual relationships, duties, or responsibilities of the Owner or Contractor nor those of the Engineer shall be altered from the Project Manual by mention or inference otherwise in any reference document. 1.6 TESTING SERVICES A. Owner will retain Engineer to provide Quality Control services for the project. B. Engineer shall provide personnel to perform material testing. The following testing services will be performed by the Engineer: 1. Section 02201 - Earthfill: Compaction Testing. 2. Section 03300 - Cast -in -Place Concrete: Field Quality Control. C. The Engineer will perform tests and other services specified in individual specification sections and as required. D. Testing and source quality control may occur on or off the project site. E. Reports will be submitted by the Engineer to the Contractor, indicating observations and results of tests and indicating compliance or non-compliance with the Project Manual. F. Cooperate with testing Engineer; furnish samples of materials, design mix, equipment, tools, storage, safe access, and assistance by incidental labor as requested. 1. Notify Engineer 48 hours prior to expected time for operations requiring services. 2. Make separate arrangements with Engineer and pay for additional samples and tests required for Contractor's use. G. Testing does not relieve Contractor to perform Work to project requirements. H. Re -testing required because of non-conformance to project requirements shall be performed by the Engineer. Payment for re -testing maybe charged to the Contractor by deducting such testing charges from the Project Sum/Price. 1.7 INSPECTION SERVICES A. Owner will appoint, employ, and pay for specified services of an independent firm (Engineer) to monitor construction activities. B. Reports will be submitted by the Engineer to the Owner on a weekly basis, indicating observations and indicating compliance or non-compliance with the Project Manual. QUALITY CONTROL 01400-2 SECTION 01400 20C17048.00 C. Cooperate with Engineer; furnish safe access and assistance by incidental labor as requested. D. Monitoring of construction activities does not relieve Contractor to perform Work to project requirements. 1.8 MANUFACTURERS' FIELD SERVICES A. When specified in individual specification sections, require material or Product suppliers or manufacturers to provide qualified staff personnel to observe site conditions, conditions of surfaces and installation, quality of workmanship, and test, adjust and balance of equipment as applicable, and to initiate instructions when necessary. B. Submit qualifications of observer to Engineer 30 days in advance of required observations. Observer subject to approval of Engineer. C. Report observations and site decisions or instructions given to applicators or installers that are supplemental or contrary to manufacturers' written instructions. D. Refer to Section 01300 - Submittals, Manufacturers' Field Reports. PART2 PRODUCTS A. Not Used. PART 3 EXECUTION 3.1 EXAMINATION A. Verify that existing site conditions and substrate surfaces are acceptable for subsequent Work. Beginning new Work means acceptance of existing conditions. B. Verify that existing substrate is capable of structural support or attachment of new Work being applied or attached. C. Examine and verify specific conditions described in individual specification sections. • END OF SECTION QUALITY CONTROL 01400-3 SECTION 01600 20C17048.00 SECTION 01600 MATERIAL AND EQUIPMENT PART GENERAL 1.1 SECTION INCLUDES A. Transportation and handling. B. Storage and protection. C. Product options. D. Substitutions. 1.2 RELATED SECTIONS A. Section 01400, Quality Control: Product quality monitoring. 1.3 TRANSPORTATION AND HANDLING A. Transport and handle Products in accordance with manufacturer's and supplier's instructions. B. Promptly inspect shipments to ensure that Products comply with requirements, quantities are correct, and Products are undamaged. C. Provide equipment and personnel to handle Products by methods to prevent soiling, disfigurement, or damage. 1.4 STORAGE AND PROTECTION A. Store and protect Products in accordance with manufacturers' instructions. B. Store with seals and labels intact and legible. C. Store sensitive Products in weather tight, climate controlled, enclosures in an environment favorable to Product. D. For exterior storage of fabricated Products, place on sloped supports above ground. E. Provide bonded off -site storage and protection when site does not permit on -site storage or protection. F. Cover Products subject to deterioration with impervious sheet covering. Provide ventilation to prevent condensation and degradation of Products. G. Store loose granular materials on solid flat surfaces in a well -drained area. Prevent mixing with foreign matter. H. Provide equipment and personnel to store Products by methods to prevent soiling, disfigurement, or damage. I. Arrange storage of Products to permit access for inspection. Periodically inspect to verify Products are undamaged and are maintained in acceptable condition. MATERIAL AND EQUIPMENT 01600-1 SECTION 01600 20C17048.00 1.5 PRODUCT OPTIONS A. Products Specified by Reference Standards or by Description Only: Any Product meeting those standards or description. B. Products Specified by Naming One or More Manufacturers: Products of manufacturers named and meeting specifications, no options or substitutions allowed. C. Products Specified by Naming One or More Manufacturers with a Provision for Substitutions: Submit a request for substitution for any manufacturer not named in accordance with the following article. 1.6 SUBSTITUTIONS A. Engineer will consider requests for Substitutions only within 30 days after date established in Notice to Proceed. B. Substitutions may be considered when a Product becomes unavailable through no fault of the Contractor. C. Document each request with complete data substantiating compliance of proposed Substitution with the Project Manual. D. A request constitutes a representation that the Contractor 1. Has investigated proposed Product and determined that it meets or exceeds the quality level of the specified Product. 2. Will provide the same warranty for the Substitution as for the specified Product. 3. Will coordinate installation and make changes to other Work which may be required for the Work to be complete with no additional cost to Owner. 4. Waives claims for additional costs or time extension which may subsequently become apparent. 5. Will reimburse Owner for review or redesign services associated with re -approval by authorities. E. Substitutions will not be considered when they are indicated or implied on shop drawing or product data submittals, without separate written request, or when acceptance will require revision to the Project Manual. F. Substitution Submittal Procedure: 1. Submit three copies of request for Substitution for consideration. Limit each request to one proposed Substitution. 2. Submit shop drawings, product data, and certified test results attesting to the proposed Product equivalence. Burden of proof is on proposer. 3. Engineer will notify Contractor in writing of decision to accept or reject request. PART 2 PRODUCTS MATERIAL AND EQUIPMENT 01600-2 A. Not Used. PART 3 EXECUTION A. Not Used. • END OF SECTION SECTION 01600 20C17048.00 MATERIAL AND EQUIPMENT 01600-3 SECTION 01700 PROJECT CLOSEOUT PART GENERAL 1.1 SECTION INCLUDES SECTION 01700 20C17048.00 A. Closeout procedures. B. Final cleaning. C. Adjusting. D. Project record documents. E. Operation and maintenance data. F. Spare parts and maintenance Products. G. Warranties and bonds. H. Maintenance service. 1.2 RELATED SECTIONS A. Section 01500, Construction Facilities and Temporary Controls: Progress cleaning 1.3 CLOSEOUT PROCEDURES A. Submit written certification that the Project Manual has been reviewed, Work has been inspected, and that Work is complete in accordance with the Project Manual and ready for Engineer's review. B. Provide submittals to Engineer that are required by governing or other authorities. C. Submit final Application for Payment identifying total adjusted Project Sum, previous payments, and sum remaining due. 1.4 FINAL CLEANING A. Execute final cleaning prior to final project assessment. B. Clean site; sweep paved areas, rake clean landscaped surfaces. C. Remove waste and surplus materials, rubbish, and construction facilities and properly dispose of in designated areas. 1.5 ADJUSTING A. Not Used. 1.6 PROJECT RECORD DOCUMENTS A. Maintain on site one set of the following record documents; record actual revisions to the Work: 1. Drawings. PROJECT CLOSEOUT 01700-1 SECTION 01700 20C17048.00 2. Specifications. 3. Addenda. 4. Change Orders and other modifications to the Project requirements. 5. Reviewed Shop Drawings, Product Data, and Samples. 6. Manufacturer's instructions for assembly, installation, and adjusting. B. Ensure entries are complete and accurate, enabling future reference by Owner. C. Store record documents separate from documents used for construction. D. Record information concurrent with construction progress. E. SMcifications: Legibly mark and record at each Product section description of actual Products installed, including the following: 1. Manufacturer's name and product. 2. Product substitutions or alternates utilized. 3. Changes made by Addenda and modifications. F. Record Drawings: Legibly mark each item to record actual construction including: 1. Topographic survey of the entire project site. Contour intervals are not to exceed 1 foot. 2. Foundation elevations (upstream, downstream, and along structure alignments) at each full station and at any abrupt change in centerline profile. 3. Subsurface drain invert elevations and top of trench drain elevations at each full station and at any abrupt change in profile. 4. Provide site plan indicating the location and identifying markers of drain outlets, cleanouts, settlement monitoring points, and other site instrumentation. 5. Spillway crest elevations, invert elevations, and foundation elevations. 6. Conduit/culvert/pipe joint invert elevations and foundation elevations. 7. Dam embankment elevations at each full station. 8. Utility alignments and depths below grade. 9. Field changes of dimension and detail. 10. Details not on original Project drawings. G. Submit documents to Engineer with claim for final Application for Payment. 1.7 SPARE PARTS AND MAINTENANCE PRODUCTS A. Not Used. 1.8 WARRANTIES AND BONDS A. Provide notarized copies. B. Execute and assemble transferable warranty documents from Subcontractors, suppliers, and manufacturers. C. Provide Table of Contents and assemble in three D side ring binder with durable plastic cover. D. Submit prior to final Application for Payment. E. For items of Work delayed beyond date of Substantial Completion, provide updated submittal within 10 days after acceptance, listing date of acceptance as start of warranty period. PROJECT CLOSEOUT 01700-2 SECTION 01700 20C17048.00 1.10 MAINTENANCE SERVICE A. Not Used. PART 2 PRODUCTS A. Not Used. PART 3 EXECUTION A. Not Used. PART 4 MEASUREMENT AND PAYMENT 4.1 MEASUREMENT A. All work required in this section will not be measured for payment. 4.2 PAYMENT A. No separate payment will be made to the Contractor for any work required in this section. Compensation shall be included in the lump sum contract price for Demobilization. • END OF SECTION PROJECT CLOSEOUT 01700-3 DIVISION 2 SITE WORK DIVISION 2 - SITE WORK 02000 Mobilization and Demobilization 02050 Structure Removal 02100 Control of Water 02111 Clearing and Grubbing 02201 Earthfill 02209 Geotextile 02222 Excavation 02275 Riprap 02935 Topsoil 02936 Permanent Turf Establishment SECTION 02000 MOBILIZATION AND DEMOBILIZATION PART1 GENERAL 1.1 SECTION INCLUDES SECTION 02000 20C17048.00 A. Mobilization shall include the purchase of bonds and all necessary permits; transportation of all personnel, equipment and operating supplies to the site; establishment of necessary facilities at the site; construction and maintenance of temporary access roads; other preparatory work at the site; traffic control; restoration of surfaces to include final grading of staging, stockpile, and spoil areas; and the requirements delineated in Subsection 1.2 of this Specification. 1.2 RELATED SECTIONS A. Section 01039, Coordination and Meetings. B. Section 01051, Layout of Work and Quantity Surveys. C. Section 01061, Project Permits. D. Section 01114, Cleanup and Disposal of Waste Materials. E. Section 01500, Construction Facilities and Temporary Controls. F. Section 01700, Project Closeout. 1.3 MEASUREMENT FOR PAYMENT A. Mobilization shall be considered to constitute sixty-five (65) percent of the Contractor's lump sum price for Mobilization and Demobilization. Mobilization will be considered complete after the Contractor has completed the items delineated above and referenced in Subsection 1.2, and has sufficient manpower and equipment on the job to begin the work in earnest. B. Demobilization shall be considered to constitute thirty-five (35) percent of the Contractor's lump sum price for Mobilization and Demobilization. Demobilization will be considered complete when all the work is satisfactorily completed and accepted and the site is cleaned to the satisfaction of the Engineer. C. Payment for Mobilization and Demobilization will be at the above percentages of the project lump sum price for Payment Item, "Mobilization and Demobilization". PART 2 PRODUCTS 2.1 MATERIALS A. Provide materials as necessary to complete the items delineated above and referenced in Subsection 1.2 — Related Sections. PART 3 EXECUTION MOBILIZATION AND DEMOBILIZATION 02000-1 SECTION 02000 20C17048.00 3.1 MOBILIZATION A. Provide the services and installation of facilities described above and referenced in Subsection 1.2, applicable to mobilization activities. 3.2 DEMOBILIZATION A. Remove equipment, supplies, facilities, debris and other items noted above and referenced in Subsection 1.2, applicable to demobilization activities. B. Perform final grading of staging, stockpile, and spoil areas to ensure relatively uniform slopes and positive drainage. This work is to be performed prior to the establishment of permanent turf in these areas. • END OF SECTION MOBILIZATION AND DEMOBILIZATION 02000-2 SECTION 02050 20C17048.00 SECTION 02050 STRUCTURE REMOVAL PART1 GENERAL 1.1 SECTION INCLUDES A. The Work shall consist of the disassembly or demolition, removal and disposal of existing structures at locations shown on the Construction Plans, including: 1. Existing shed located at the outlet end of the principal spillway conduit. 2. Existing concrete drop inlet structure connected to the outlet end of the drain outlet pipe. 3. Existing PVC conduit located near left abutment. 1.2 RELATED SECTIONS A. Section 02222, Excavation. B. Section 02201. Earthfill. 1.3 MEASUREMENT AND PAYMENT A. Measurement and payment for Structure Removal will be at the lump sum for payment item "Structure Removal," and shall constitute full compensation for furnishing all materials, equipment and labor as specified or required herein. PART 2 PRODUCTS A. Not Used. PART 3 EXECUTION 3.1 REMOVAL METHODS A. The Contractor shall be responsible for compliance with all Federal, State and local laws and regulations relative to disposal by removal, and for obtaining all necessary permits and payment of fees for removal or disposal. B. Methods used for the disassembly, removal, disposal and/or replacement of existing structures shall be subject to the approval of the Engineer. C. Blasting shall not be permitted. D. Any voids resulting from the removal of structures shall be properly backfilled with a material approved by the Engineer and performed within a reasonable and prudent time period. E. Materials resulting from removal of the concrete structures shall be appropriately disposed of by the Contractor off site. Any items disposed of in landfills shall be taken to certified landfills. Proof of certification shall be provided to the Owner. F. Precautions shall be taken to prevent debris from entering any watercourse, particularly during high flows. STRUCTURE REMOVAL 02050-1 SECTION 02050 20C17048.00 3.2 SALVAGEABLE MATERIALS A. The Contractor will be allowed to stockpile salvageable materials at locations approved by the Engineer. All stockpiled materials must be removed from the site before final acceptance of the Work. • END OF SECTION STRUCTURE REMOVAL 02050-2 SECTION 02100 20C17048.00 SECTION 02100 CONTROL OF WATER PART1 GENERAL 1.1 SECTION INCLUDES A. The work shall consist of the Control of Surface Water and Groundwater as needed to perform the required construction in accordance with the Specifications. It shall include: 1. Building and maintaining groundwater dewatering systems, all necessary temporary impounding works, cofferdams, check dams, channels, ditches, diversions and flumes. 2. Furnishing, installing and operating all necessary pumps, piping and other facilities and equipment. 3. Preparation and submission of a Control of Water Plan. 4. Removing all such temporary works and equipment after they have served their purposes. 1.2 RELATED SECTIONS A. Section 01300, Submittals. B. Section 02201, Earthfill. C. Section 02222, Excavation. D. Section 03300, Cast -In -Place Concrete. 1.3 MEASUREMENT AND PAYMENT A. Measurement for Control of Water will not be performed but items of work shall be contained on Schedule of Values. B. Payment will be at the lump sum price for Payment Item "Control of Water", as shown on the Quote form and shall constitute full compensation for all labor, equipment, tools and other items necessary and incidental to the completion of the Work. Payment for control of water will be prorated and provided in equal amounts on each monthly progress payment estimate. The number of months used for prorating shall be the number estimated to complete the work as outlined in the Contractor's approved construction schedule. The final month's prorated amount will be provided with the final project payment. Payment as described will constitute full compensation for completion of the work. 1.4 REFERENCES A. The Contractor shall review available data regarding surface water and groundwater flow and geotechnical conditions at the site before submitting a Control of Water Plan to the Engineer. Data includes, but is not limited to, analyses and studies performed as part of this project. B. The Contractor is warned that surface water, groundwater, runoff and other site conditions may be highly variable and difficult to accurately predict. It is the Contractors sole responsibility to evaluate the applicability of the available information and to obtain or develop additional information as a basis for development of the Contractor's Control of Water Plan. CONTROL OF WATER 02100-1 SECTION 02100 20C17048.00 1.5 SUBMITTALS A. Control of Water Plan: The Contractor shall furnish to the Engineer in writing, his complete plan for controlling surface and groundwater, to include maintenance of his proposed diversion and protective works, for review and comment, before beginning the work. The Plan shall include proposed sequencing of control of water measures throughout each phase of construction. The plan shall be prepared and stamped by a professional engineer registered in Virginia. Review of this plan by the Engineer will not relieve the Contractor of his responsibility for completing the work as specified. PART2 PRODUCTS A. Not Used. PART 3 EXECUTION 3.1 DIVERTING CONCENTRATED FLOW AND OTHER SURFACE WATER A. The control and diversion of surface water is the sole responsibility of the Contractor. The drainage area is approximately 10 acres (0.02 square miles). The diversion and protective works needed to divert reservoir water shall be capable of storing and/or discharging stormwater runoff resulting from the 2-year, 24-hour duration rainfall event without water from the reservoir entering the working area or overtopping any cofferdams. B. The Contractor shall build, maintain, and operate cofferdams, channels, flumes, sumps, and other diversion and protective works within the project's defined limits of disturbance needed to divert concentrated flow and other surface water into basins and traps while construction is in progress. The Contractor must satisfy himself that his cofferdam and diversion system is sufficient to reasonably protect his work. C. The Contractor shall furnish, install and operate all necessary pumps, well points, piping and other facilities and equipment needed to divert concentrated flow and other surface water through the construction site while construction is in progress. All discharges from water control equipment shall be directed into basins and traps. D. After the diversion works have served their purpose, the Contractor shall remove, level, or grade such works to present a sightly appearance and to prevent any obstruction of the flow of water or any other interference with the operation of or access to the permanent works. The removal of the diversion facilities shall be subject to the approval of the Engineer. E. The Contractor shall maintain an uninterrupted flow of water into the downstream channel at all times during construction. The method and manner in which the flow is to be maintained and measured is to be included in the Control of Water Plan. F. Contractor shall maintain the Ivy MUC Pond pool level at an elevation satisfactory to himself to perform the work. Upon completion of the principal spillway conduit, earthfill, and other appurtenant structures, the Contractor shall allow the Ivy MUC Pond to refill to the new normal pool level. G. Any cofferdams constructed shall be removed by the Contractor after the Engineer has approved the construction of all other applicable work items. Removal of cofferdams shall follow all applicable local, state, and federal regulations and laws. Excess material from the cofferdam removal shall be removed from the site in an appropriate disposal location or used at the site for a purpose approved by the Engineer. CONTROL OF WATER 02100-2 SECTION 02100 20C17048.00 3.2 DEWATERING THE CONSTRUCTION SITE A. The foundation of the structure to be constructed under this Project shall be dewatered and kept free of standing or running water or muddy conditions as needed for proper execution of the construction work. Dewatering shall be performed to maintain the groundwater a minimum of 3 feet below the working subgrade. Dewatering may be performed to maintain the groundwater at a greater depth below the working subgrade at the Contractor's discretion. Dewatering methods that cause a loss of fines from foundation areas will not be permitted. B. The Contractor shall build, maintain, operate cofferdams, channels, flumes, sumps; wellpoints, and other diversion and protective works needed to divert or remove water from foundation areas while construction is in progress. C. Water pumped or drained from excavations, or any drains or water courses encountered in the work, shall be disposed of in accordance with an approved water control plan, without injury to adjacent property, the work under construction, or to pavements, roads, and water courses. D. After the construction-dewatering site works have served their purpose, the Contractor shall remove, level, or grade such works to present a sightly appearance and to prevent any obstruction to the flow of water or any other interference with the operation of or access to the permanent works. The termination of the dewatering of the construction site works shall be subject to the approval of the Engineer. • END OF SECTION CONTROL OF WATER 02100-3 SECTION 02111 CLEARING AND GRUBBING PART GENERAL 1.1 SECTION INCLUDES SECTION 02111 20C17048.00 A. Areas to be cleared and grubbed are indicated on the Construction Plans as "Limits of Disturbance" and generally includes the surface of the dam and the left abutment area where the emergency spillway is to be modified. The Engineer may direct additional areas to be cleared and grubbed. B. Stripping and stockpiling topsoil for reuse prior to grassing. 1.2 RELATED SECTIONS A. Section 02222, Excavation 1.3 MEASUREMENT AND PAYMENT A. Clearing and grubbing of areas shown on the Construction Plans and as directed by the Engineer shall be measured for payment to the nearest 0.1 acre. No payment will be made for Gearing and grubbing of areas outside the limits shown on the Construction Plans or the areas directed by the Engineer. Payment will be at the unit price for Payment Item, "Clearing and Grubbing', and shall constitute full compensation for all labor, equipment, materials and all other items necessary and incidental to completion of the work. PART 2 PRODUCTS A. Not Used. PART 3 EXECUTION 3.1 CLEARING AND GRUBBING A. Clearing shall consist of the removal and disposal of all trees, logs, brush, snags, bushes, vines, shrubs, decayed stumps, leaves, roots, grasses, weeds, fences, posts, rubbish, and other perishable and objectionable materials. Large bushes and trees smaller than 12 inches in diameter shall be cut 6 inches above ground line; trees 12 inches and larger in diameter at a point 12 inches above ground shall be cut off at that level. All other vegetation in areas to be cleared shall be cut within 2 inches of the ground. Grubbing shall include the removal and disposal of all stumps, roots, and root clusters that have a diameter of one (1) inch or larger shall be grubbed out to a depth of at least two (2) feet below subgrade for concrete structures and one (1) foot below the ground surface at embankment sites and other designated areas. CLEARING AND GRUBBING 02111-1 SECTION 02111 20C17048.00 In addition, all stumps, logs, and roots greater than 2 inches shall be removed regardless of depth below subgrade. B. The limits of areas to be cleared and grubbed shall be marked by the Contractor using stakes, flags, tree markings or other methods. Trees to be left in place and uninjured will be designated by special markings positioned on the trunks at about 6 feet above the ground surface. C. Contractor shall remove and stockpile an adequate amount of topsoil for placement on excavated surfaces prior to grassing. 3.2 DISPOSAL A. The Contractor shall be responsible for compliance with all Federal, State and local laws and regulations relative to disposal by removal or burning, and for obtaining all necessary permits and payment of fees for removal or disposal. B. Timber suitable for harvesting shall be the property of the Contractor and removed from the site. Other materials cleared and grubbed shall be burned, mulched or disposed of in approved spoil areas designated by the Owner. C. Timber and other refuse to be disposed of by burning shall be hauled to and burned at locations approved by the Engineer and in a manner that will avoid all hazards such as damage to existing structures, construction in progress, and trees and vegetation. Burning will be permitted, at the Contractors discretion, within the limits of clearing and grubbing. D. Disposal by burning shall be under constant attendance until the fires have burned out or have been extinguished. The Contractor shall at all times take special precautions to prevent fire from spreading to areas beyond the limits of the Geared and grubbed areas, and shall have available at all times suitable equipment and supplies for use in preventing and suppressing fires. E. Precautions shall be taken to prevent debris from clearing and grubbing operations from entering any watercourse, including high flows. F. Noncombustible material and other material which cannot be disposed of by methods used in the normal burning operation is to be removed from the construction site and disposed of at an appropriate offsite location. 3.3 SALVAGEABLE MATERIALS A. The Contractor will be allowed to stockpile salvageable materials (not wanted by the Owner) at locations approved by the Engineer. All salvageable materials must be removed from the site before final acceptance of the work. • END OF SECTION CLEARING AND GRUBBING 02111-2 SECTION 02111 20C17048.00 CLEARING AND GRUBBING 02111-3 SECTION 02201 EARTH FI LL PART1 GENERAL 1.1 SECTION INCLUDES SECTION 02201 20C17048.00 A. The work shall consist of the placement of earthfill as necessary to backfill the manhole located at the toe of the dam. 1.2 RELATED SECTIONS A. Section 02100, Control of Water. B. Section 02111, Clearing and Grubbing. C. Section 02222, Excavation. D. Section 02936, Permanent Turf Establishment. 1.3 MEASUREMENT AND PAYMENT A. Payment for earthfill shall be considered incidental to Structure Removal. No separate payment shall be made for earthfill. 1.4 TESTING A. Density tests of fill will be performed by the Owner. Tests shall be performed in accordance with ASTM D-1556, ASTM D-2937, ASTM D-2922, or by equivalent methods, except that the volume and moist weight of included rock particles larger than those used in the compaction test method specified for the type of fill shall be determined and deducted from the volume and moist weight of the total sample prior to computation of density. B. During the course of the work the Engineer will perform such tests, or direct tests to be performed, as are required to identify materials, measure compaction characteristics, measure moisture content, and measure density of fill in place. These tests performed by the Engineer will be used to verify that the fills conform to the requirements of the Specifications. Such tests are not intended to provide the Contractor with the information required by him for the proper execution of the work and their performance shall not relieve the Contractor of the necessity to perform tests for that purpose. PART 2 PRODUCTS 2.1 MATERIALS A. Earthfrll materials shall be obtained from required on -site excavations and approved borrow sources. The selection, blending, routing and disposition of materials in the various fills shall be subject to review by the Engineer. B. Fill materials shall contain no sod, brush, roots or other perishable materials. Fill shall not contain more than one percent by weight of organics. C. Earthfrll shall be classified as SM, SC, CL, or ML according to the Unified Soil Classification System (ASTM D2487). Fill soils shall not have a liquid limit greater than 50 or a plasticity EARTHFILL 02201-1 SECTION 02201 20C17048.00 index greater than 25. The maximum particle size shall not exceed two-thirds of the lift thickness. PART 3 EXECUTION 3.1 FOUNDATION PREPARATION A. Foundations for earthfill shall be stripped to remove vegetation and other unsuitable materials or shall be excavated as specified. B. Earth foundation surfaces shall be graded to remove surface irregularities, proofrolled (see Part 3.1.G), and shall be scarified parallel to the axis of the fill to a minimum depth of two inches. The surface materials of the foundation shall be compacted and bonded with the first layer of earthfill as specified for subsequent layers of earthfill. C. Earth foundation surfaces shall be free of loose, uncompacted earth in excess of two inches in depth normal to the slope and shall be at such a moisture content that the earthfill can be compacted against them to effect a good bond between the fill and the abutments. D. The contractor shall anticipate dewatering the foundation and subgrade to a level at least three feet below the foundation and subgrade. E. Rock foundation and abutment surfaces shall be Geared of all loose materials by hand or other effective means and shall be free of standing water when fill is placed upon them. F. Foundation and abutment surfaces shall not be steeper than two horizontal to one vertical unless otherwise specified. Test pits or other cavities shall be filled with compacted earthfill conforming to the Specifications for Earthfrll to be placed upon the foundation. G. Areas to receive structural fill should be stripped of vegetation as well as topsoil containing significant amounts of organic material or other deleterious material. The areas should then be proofrolled with a heavily loaded tandem -axle dump truck or similar piece of rubber -tired equipment. The proofrolling will serve to density the exposed soils and to detect any isolated zones of soft or wet soils. Any such soils thus detected should be further compacted in place or removed and replaced with well compacted structural fill. Proofrolling should be performed after a period of dry weather to avoid degrading an otherwise acceptable subgrade. Proofrolling should be observed by the geotechnical engineer. 3.2 PLACEMENT A. Fill shall not be placed until the required excavation and foundation preparation has been completed and the foundation has been inspected by the Engineer. Fill shall not be placed upon a frozen surface, nor shall snow, ice or frozen material be incorporated in the fill. B. Fill shall be placed in horizontal layers. The thickness of each layer before compaction shall not exceed the maximum thickness specified. Materials placed by dumping in piles or windrows shall be spread uniformly to not more than the specified thickness before being compacted. Hand compacted fill, including fill compacted by manually directed power tampers, shall be placed in layers whose thickness before compaction does not exceed the maximum thickness specified for layers of fill compacted by manually directed power tampers. C. Fill adjacent to structures shall be placed in a manner which will prevent damage to the structures and will allow the structures to assume the loads from the fill gradually and uniformly. The height of the fill adjacent to a structure shall be increased at approximately the same rate on all sides of the structure. EARTHFILL 02201-2 SECTION 02201 20C17048.00 D. The distribution of materials throughout each zone shall be such that the less clayey/more coarse grained material is placed in the exterior of the embankment, and the fill shall be free from lenses, pockets, streaks or layers of material differing substantially in texture or gradation from the surrounding material. If the surface of any layer becomes too hard and smooth for proper bond with the succeeding layer, it shall be scarified parallel to the axis of the fill to a depth of not less than two inches before the next layer is placed. E. The surfaces of embankments shall be maintained approximately level during construction, except that a crown or cross -slope of not less than two percent shall be maintained to ensure effective drainage, unless otherwise specified. F. Embankments shall be constructed in continuous layers from abutment to abutment except where openings to facilitate construction or to allow the passage of stream flow during construction are specifically authorized by the Engineer. G. Embankments built at different levels shall be constructed so that the slope of the bonding surfaces between embankment in place and embankment to be placed is not steeper than two feet horizontal to one foot vertical. The bonding surface of the embankment in place shall be scarified, moistened and recompacted when the new fill is placed against it as needed to ensure a good bond with the new fill and to obtain the specified moisture content and density at the junction of the in place and new fill. H. Gutters formed where earth surfaces intersect shall be shaped to form rounded rather than "V' type gutters. I. The side slopes of the completed embankment shall be compacted by walking a track type tractor up and/or down the slope until the entire surface is traversed by at least one pass of the tractor tread. 3.3 CONTROL OF MOISTURE CONTENT A. During placement and compaction of fill, the moisture content of materials being placed and that of the preceding layer shall be maintained between the range specified. The application of water to the fill materials shall be accomplished at the borrow areas insofar as practicable. Water may be applied by sprinkling the materials after placement of the fill, if necessary. Uniform moisture distribution shall be obtained by discing, blading or other approved methods prior to compaction of the layer. Material that is too wet when deposited on the fill shall either be removed or dried to the specified moisture content prior to compaction. B. A heavy duty harrow shall be on site while earth fill is being placed to provide the necessary disking for moisture control. The harrow shall be capable of disking material deeper than the thickness of uncompacted layers. 3.4 COMPACTION A. Earthfill shall be placed with a moisture content between optimum and four percent above optimum and compacted to a minimum of 95 percent of maximum dry density as determined by the Standard Proctor Compaction Test ASTM D698. 1) Exception: Earthfill within the top four feet of the crest of embankment shall be compacted to a minimum of 98 percent of maximum dry density as determined by Standard Proctor Compaction Test ASTM D698. EARTHFILL 02201-3 SECTION 02201 20C17048.00 B. Earthfill shall be spread in horizontal layers not exceeding nine (9) inches in thickness before compaction. Compaction of all earthfill shall be done with a sheepsfoot roller or hand tamp. C. Fill adjacent to structures shall be compacted to a density equivalent to that of the surrounding fill by means of hand tamping, or manually directed power tampers or plate vibrators. Fill to be compacted by hand tamping, or manually directed power tampers or plate vibrators shall be spread in horizontal layers approximately four (4) inches in thickness before compaction. Heavy equipment shall not be operated within three feet of any structure. Vibrating rollers shall not be operated within five feet of any structure. Compaction by means of drop weights operating from a crane or hoist will not be permitted. D. The passage of heavy equipment will not be allowed: (1) over cradled precast conduits prior to seven days after placement of the concrete cradle; and (2) over the conduit until the backfill has been placed above the top surface of the structure to a height equal to three feet. E. Compaction of fill adjacent to structures shall not be started: (1) until the specified design strength has been attained for reinforced -concrete structures; and (2) until 48 hours have elapsed after concrete placement for other structures. 3.5 REMOVAL AND PLACEMENT OF DEFECTIVE FILL A. Fill placed at densities lower than the specified minimum density or at moisture contents outside the specified acceptable range of moisture content or otherwise not conforming to the requirements of the Specifications shall be reworked to meet the requirement or removed and replaced by acceptable fill at the Contractor's expense. The replacement fill and the foundation, abutment and fill surfaces upon which it is placed shall conform to all requirements of this Specification for foundation preparation, approval, placement, moisture control and compaction. • END OF SECTION EARTHFILL 02201-4 SECTION 02209 GEOTEXTILE PART GENERAL 1.1 SECTION INCLUDES SECTION 02209 20C17048.00 A. The work shall consist of furnishing and placing Geotextile at the locations and to the limits shown on the Construction Plans or as directed by the Engineer. 1.2 RELATED SECTIONS A. Section 01300, Submittals. B. Section 02275, Riprap. 1.3 MEASUREMENT AND PAYMENT A. Payment for Geotextile will be considered incidental to Riprap. No separate payment will be made for Geotextile. 1.4 DELIVERY, STORAGE, AND HANDLING OF MATERIALS A. Materials delivered to the site shall be inspected for damage, unloaded and stored with a minimum of handling. Materials shall not be stored directly on the ground. During shipment and storage, Geotextile shall be wrapped in burlap or similar heavy-duty protective covering. The storage area shall be such that the fabric is protected from mud, soil, dust, and debris. Geotextile materials that are not to be installed immediately shall not be stored in direct sunlight. B. Materials shall be handled in such a manner as to ensure delivery to the site in sound, undamaged condition. 1.5 SUBMITTALS A. The name and test reports on the material. PART 2 PRODUCTS 2.1 MATERIALS A. The Geotextile shall be a nonwoven fabric consisting only of continuous chain polymeric filaments or yarns of polyester, formed into a stable network by needle punching. All fabrics shall be inert to commonly encountered chemicals and hydrocarbons, mildewand rot resistant, insect and rodent resistant, resistant to ultraviolet light and heat exposure, and conform to the physical strength requirements listed in Table 1. B. The Geotextile shall provide an Equivalent Opening Size (EOS) no finer than the U.S. Standard Sieve No. 100 and no coarser than the U.S. Standard Sieve No. 50. GEOTEXTILE 02209-1 TABLE 1 - PHYSICAL STRENGTH REQUIREMENTS Physical Properties Grab Tensile Strength Elongation at Failure Trapezoid Tear Strength Puncture Strength SECTION 02209 20C17048.00 Average Roll Minimum Value (Weakest Test Procedure Principal Direction) ASTM D4632 200 lbs. ASTM D4632 50% ASTM D4533 60 lbs. ASTM D6241 500 lbs. C. The seams of the fabric shall be sewn with thread of a material meeting the chemical requirements given above for synthetic yarn or shall be bonded by cementing or by heat. Seams shall be tested in accordance with method ASTM D4884, using 1-inch square jaws and 12 inches per minute constant rate of traverse. The strengths shall be not less than 90% of the required tensile strength (fable 1) of the unaged fabric in any principal direction. Unaged fabric is defined as fabric in the condition received from the manufacturer or distributor. D. All brands of synthetic Geotextile and all seams to be used shall be accepted on the following basis. The Contractor shall furnish the Engineer, in duplicate, a mill certificate or affidavit signed by a legally authorized official from the company manufacturing the fabric. The mill certificate or affidavit shall attest that the fabric meets the chemical, physical and manufacturing requirements stated in this Specification. E. Securing Pins: The pins shall be 3/16-inch by 18-inch long steel bars, pointed at one end and fabricated with a head to retain a steel washer having a minimum outside diameter of 1.5 inches. U-shape staples, 11 gage by 12-inches long and 1 to 1.5 inches wide, are also acceptable. PART 3 EXECUTION 3.1 INSTALLATION A. Geotextile shall be free from defects, rips, holes, deterioration or damage. The prepared foundation shall be relatively smooth, free from obstructions, depressions, debris, low density pockets and protruding rock. Beginning at the toe of the slope, the fabric shall be placed with the long dimension parallel to the slope and shall be laid smooth and free of tension, stress, folds, wrinkles or creases. The strips shall be placed to provide a minimum width of 12 inches of overlap for each joint, unless a larger overlap is recommended by the manufacturer. B. Securing pins with washers shall be inserted through both strips of overlapped fabric at no greater than five foot intervals. C. Additional pins, regardless of location, shall be installed, as necessary, to prevent any slippage of the Geotextile. The fabric shall be placed so that the upper strip of fabric will overlap the next lower strip. Each securing pin shall be pushed through the fabric until the washer bears against the fabric and secures it firmly to the foundation. D. The fabric shall be protected at all times during construction from any damage or contamination by surface run-off. The work shall be scheduled so that the covering of the fabric with a layer of specified material is completed within 30 minutes after the fabric is placed. Fabric damaged during installation or placement of backfill, or through failure to prevent contamination by GEOTEXTILE 02209-2 SECTION 02209 20C17048.00 surface run-off or backfill within the specified time limit herein, shall be removed and replaced at the Contractors expense. • END OF SECTION GEOTEXTILE 02209-3 SECTION 02222 EXCAVATION PART1 GENERAL 1.1 SECTION INCLUDES SECTION 02222 20C17048.00 A. The work shall include the excavation of earth and rock materials at the locations and to the lines and grades shown on the Construction Plans, and the stockpiling and/or disposal of all materials as specified herein. B. Common Excavation shall include all materials not classified as Rock Excavation. C. Rock Excavation shall include all material to be excavated which requires: systematic blasting, barring and wedging for removal; boulders or loose rock of one cubic yard or more in volume; and material which cannot be loosened or broken down by equipment having a rated breakout force of at least 45,000 Ibs but not more than 55,000 lbs. 1.2 RELATED SECTIONS A. Section 02201, Earthfill. B. Section 02111, Clearing and Grubbing. C. Section 02275, Riprap. D. Section 02936, Permanent Turf Establishment. 1.3 MEASUREMENT FOR PAYMENT A. Common Excavation at the dam site, to the lines and grades shown on the Construction Plans and accomplished according to the Specifications or as directed by the Engineer shall be measured and computed for payment to the nearest cubic yard using the submitted surveys. Common Excavation that may be required from approved on -site borrow areas for Earthfill shall not be paid for separately, but shall be included in the unit price for Earthfill. No payment shall be made for excavation of materials from borrow areas to replace suitable materials from the dam site excavation that were used for the Contractor's purposes. No payment shall be made for excavation of materials from borrow areas for the Contractors purposes, including use in temporary haul roads and staging areas. No payment will be made for the excavation of unsuitable soils within the borrow area that is required to obtain soils suitable for use as earthfill, and no payment will be made for the relocation of such excavated unsuitable soils. No payment will be made for the excavation required for the installation of any subsurface drains, keyways, cutoff walls, utilities, and stormwater drainage systems. No payment will be made for any excavation associated with the control of water, to include stream diversion, and erosion and sediment control measures, to include temporary sediment basins. No payment will be made for any excavation associated with the final grading/restoration of borrow, staging, stockpile, and spoil areas. Payment for all Common Excavation will be at the unit price for Payment Item "Common Excavation", and shall constitute full compensation for Excavation, loading, hauling to stockpile areas and/or disposal in designated spoil areas. B. Rock Excavation according to the Construction Plans and Specifications or as directed by the Engineer shall be measured and computed for payment to the nearest cubic yard using the method of average cross -sectional end areas. Payment for Rock Excavation will be at the contract unit price for Payment Item "Rock Excavation", and shall constitute full compensation for Excavation, loading, hauling to stockpile areas and/or disposal in designated spoil areas. EXCAVATION 02222-1 SECTION 02222 20C17048.00 PART 2 PRODUCTS A. Not Used. PART 3 - EXECUTION 3.1 COMMON EXCAVATION A. The tolerance for Common Excavation shall be plus or minus three -tenths (0.3) of a foot from the lines and grades shown on the Construction Plans or as directed by the Engineer. Excavation beyond the approved lines and grades shall be backfilled as directed by the Engineer with approved suitable material and compacted. This work shall be at the Contractor's expense and no payment will be made for over -excavation or backfill of over - excavated areas. B. Where excavation lines are marked as pay lines, the Contractor may cut a flatter slope, at no additional payment for Excavation or Earthfill, if he believes that a flatter slope is more appropriate for his operations. C. Common Excavation, which meets the requirements of Section 02201, Earthfill shall be stockpiled for such purposes. Material excavated from the dam site which is not suitable for use as Earthfill may be used by the Contractor for his own purposes, or shall be disposed of in spoil areas shown on the Construction Plans or in other areas approved by the Engineer. Material excavated from the dam site that meets the requirements of Section 02201, Earthfill, but is determined to have a moisture content outside of the acceptable range as defined in Section 02201, is not considered unsuitable. This material is to be stockpiled and moisture - conditioned for potential use later as Earthfill. 3.2 ROCK EXCAVATION A. The tolerance for Rock Excavation shall be plus or minus three -tenths (0.3) of a foot from the lines and grades shown on the Construction Plans or as directed by the Engineer. Excavation in rock outside the pay lines which is caused by negligence on the part of the Contractor shall be backfilled with concrete at the direction of the Engineer. This work shall be at the Contractor's expense and no payment will be made for over -excavation or backfill concrete. B. Rock Excavation materials shall be disposed of in spoil areas shown on the Construction Plans or in other areas approved by the Engineer. 3.3 BORROW AREAS A. All material required for the specified earthfills which are not available from required excavations shall be obtained from borrow areas shown on the Construction Plans or other areas identified by the Contractor and approved by the Engineer. The Engineer will review the location and depths of cut in all parts of any additional borrow areas. Borrow areas shall be graded to drain with no excavated slopes left steeper than two horizontal to one vertical. All holes, test pits and depressions shall be filled. All borrow areas that will not be covered in water shall be left in a neat condition and shall be seeded. 3.4 BLASTING A. Blasting will not be allowed. EXCAVATION 02222-2 SECTION 02222 20C17048.00 3.5 PRE -SPLITTING A. Not Used. 3.6 SHORING AND BRACING A. Excavated surfaces too steep to be safe and stable, if unsupported, shall be supported as necessary to safeguard the work and workmen, to prevent sliding or settling of the adjacent ground, and to avoid damaging existing improvements. The width of the excavation shall be increased, if necessary, to provide space for sheeting, bracing, shoring and other supporting installations. The Contractor shall furnish, place and subsequently remove such supporting installations. 3.7 SPOIL AREAS A. Areas shown on the Construction Plans as Spoil Areas shall be filled with unsuitable or excess materials from Common and Rock Excavation. Designated spoil areas shall not contain more than twenty (20) percent of organic materials such as tree stumps, branches and brush, except when spoil is used in a fill adjacent to a structure, in which case no organic materials as described herein may be used. Compaction in designated Spoil Areas shall be accomplished by at least two passes of the hauling or spreading equipment for each twelve (12) inch layer of material placed. Spoil Areas in addition to those shown on the Construction Plans shall be in locations approved by the Engineer. B. The final surface of the Spoil Area(s) shall have a uniform, smooth appearance, free from abrupt depressions. The surface shall be graded to drain, and covered with a minimum of two feet of earthfill. If a Spoil Area above normal pool is approved by the Engineer, the surface shall also be topsoiled and seeded. • END OF SECTION EXCAVATION 02222-3 SECTION 02275 PART1 GENERAL 1.1 SECTION INCLUDES SECTION 02275 20C17048.00 A. The work shall consist of furnishing and placing rock riprap at the locations and to the dimensions shown on the Construction Plans. 1.2 RELATED SECTIONS A. Section 01300, Submittals. B. Section 02201, Earthfill. C. Section 02209, Geotextile. D. Section 02222, Excavation. 1.3 MEASUREMENT AND PAYMENT A. Riprap placed according to the Construction Plans and Specifications shall be measured and computed for payment to the nearest Ton by actual weight. For each load of material placed as specified the Contractor shall furnish to the Engineer a statement -of -delivery ticket showing the weight, to the nearest 0.1 ton, of rock in the load. Payment for Riprap will be at the unit price for Payment Item "Riprap — Class Al" and shall constitute full compensation for furnishing, hauling, and placing of Riprap as specified herein. B. Riprap placed for erosion control is not paid for under this Section and shall be subsidiary to erosion, sediment, and pollution control. 1.4 REFERENCES A. The bulk specific gravity and absorption shall be determined by ASTM C-127. The test for soundness shall be performed according to the procedure for ledge rock in Federal Specification SS-R-406C, Method 203.01. The test for abrasion shall be in accordance with ASTM C-535, except as directed herein. 1.5 ALLOWABLE TOLERANCES A. Except as provided below, the rock shall have the following properties: 1. Bulk specific gravity (saturated surface -dry basis) not less than 2.25. 2. Absorption not greater than 2 percent. 3. Soundness; weight loss in five cycles not greater than 10 percent when sodium sulfate is used and 15 percent when magnesium sulfate is used. 4. Abrasion; weight loss after 500 revolutions not greater than 50 percent (using Los Angeles Machine Grading B). 1.6 SUBMITTALS A. Submit test data showing material meets requirements of this Specification. RIPRAP 02275-1 SECTION 02275 20C17048.00 PART 2 PRODUCTS 2.1 MATERIAL A. Riprap shall be obtained from off -site quarries. Individual rock fragments shall be dense, sound and free from cracks, seams and other defects conducive to accelerated weathering. B. Riprap shall be angular fragments obtained by blasting. Riprap shall meet all the requirements of the latest version of VDOT specifications and shall be graded in accordance with VDOT Class Al Riprap. C. Rock that fails to meet the requirements stated in Allowable Tolerances, maybe accepted only if similar rock from the same source has been demonstrated to be sound after five years or more of service under conditions of weather, wetting and drying and erosive forces similar to those anticipated for the rock to be installed under this Specification. PART 3 EXECUTION 3.1 PLACEMENT A. Riprap shall be dumped and graded in a manner to ensure that the large rock fragments are uniformly distributed and that the smaller fragments fill the spaces between the large fragments in such a manner as will result in a compact, uniform layer. Hand placing will be required only to the extent necessary to produce the results specified above. B. The Engineer shall have entry to any quarries furnishing the rock under this project. The rock delivered to the project site shall be subject to testing by the Engineer for conformance to these Specifications. • END OF SECTION RIPRAP 02275-2 SECTION 02935 TOPSOIL PART1 GENERAL 1.1 SECTION INCLUDES SECTION 02935 20C17048.00 A. Requirements for preparing, depositing and spreading Topsoil at locations determined by the Engineer. B. Topsoil will be placed over the fill placed for the construction of the dam. 1.2 RELATED SECTIONS A. Section 02201, Earthfill. B. Section 02222, Excavation C. Section 02936, Permanent Turf Establishment. 1.3 MEASUREMENT FOR PAYMENT A. Topsoil will be obtained from onsite material. Topsoil acceptably placed according to the Specifications and at the locations directed by the Engineer will be measured for payment to the nearest cubic yard. The volume will be computed from the depth of Topsoil placed and compacted and the area covered. Payment will be at the unit price for Payment Item "Topsoil", and shall constitute full compensation for furnishing and placing Topsoil in accordance with the Plans and Specifications. PART 2 PRODUCTS 2.1 MATERIALS A. Material for Topsoiling shall be topsoil selected from stripping of the dam site, borrow, staging, stockpile, disposal, and required excavated areas. Topsoil shall consist of natural, friable loam, possessing characteristics of the best soils in the vicinity which produce heavy growth of crops, grass, and other vegetation. It shall be reasonably free from subsoil, clay lumps, stones, roots or similar objects larger than two inches in diameter, brush, objectionable woods or litter, or any other material or substance which may be harmful to plant growth or hindrance to grading, planting or maintenance of operations. PART 3 EXECUTION 3.1 PROCEDURE A. In the areas to be Topsoiled, the Contractor shall complete all grading necessary to bring the surface to the lines indicated on the Construction Plans and parallel to the proposed finished grade. These areas are to be free from rock or other foreign material of two inches or greater in any dimension. Immediately prior to placing of Topsoil, the areas shall be loosened by discing or by scarifying to a depth of at least two inches to permit proper bonding of the Topsoil to the ground on which it is placed. B. Topsoil shall not be placed until the area to be covered has been shaped, trimmed, finished and all other construction work in the area has been completed. Topsoil shall not be placed when the ground is frozen, excessively wet, extremely dry, or in a condition otherwise TOPSOIL 02935-1 SECTION 02935 20C17048.00 detrimental to the proposed planting or to proper grading. Topsoil shall be placed and spread to a depth sufficient such that after natural settlement and rolling with a light roller, the completed work shall conform to the lines, grades and elevations indicated on the Construction Plans. Unless specified otherwise, the depth of Topsoil after settlement shall be 6 inches minimum. After spreading the Topsoil, all large stiff Gods, hard lumps, large rocks, stumps, litter, or other foreign matter shall be raked up and removed from the Topsoil area and disposed of by the Contractor. The area shall then be rolled with a light roller weighing not less than 100 pounds and not over 210 pounds per foot of width with an approved cultipacker. C. If soil or weather conditions are unsuitable, the Contractor shall cease Topsoil operations and shall resume operations when conditions permit. 3.2 STOCK PILE AREAS A. Areas designated by the Owner as Stock Pile Areas shall be filled with materials from Stripping to be used later as Topsoil. B. After all Topsoil operations are completed, any excess material remaining in the Stock Pile shall be placed in the stockpile and spoils area. The excess topsoil placed in these areas shall be spread to a relatively uniform thickness across the entire finished surface of the area. The Stock Pile Area shall be restored to its pre -construction condition, as directed by the Engineer. • END OF SECTION TOPSOIL 02935-2 SECTION 02936 PERMANENT TURF ESTABLISHMENT PART1 GENERAL 1.1 SECTION INCLUDES SECTION 02936 20C17048.00 A. The work shall consist of tillage of Topsoil, and the furnishing and placing of limestone, fertilizer, seed, mulching materials and erosion control mat for the establishment of permanent turf and maintaining and tending the permanent turf until acceptance. Areas to be prepared and seeded or sodded for permanent turfing are as follows: 1. All cut, fill and disturbed areas upstream and downstream of the dam, as well as the staging, stockpile, borrow, and spoils areas. 2. Areas not requiring Permanent Turf Establishment include the cofferdams, stockpiles and cut, fill, and disturbed areas that will be covered by water. 1.2 RELATED SECTIONS A. Section 01300, Submittals. B. Section 02201, Earthfill. C. Section 02222, Excavation. D. Section 02935, Topsoil. 1.3 MEASUREMENT AND PAYMENT A. Permanent Turf established according to the Construction Plans and Specifications shall be measured and computed for payment to the nearest one -tenth acre. Payment will be at the unit price for Payment Item "Permanent Turf Establishment", and shall constitute full compensation for furnishing and placing seed, limestone, fertilizer, and mulch in accordance with the Plans, Specifications and manufacturer's recommendations. Fifty percent (50%) of the unit price for Permanent Turf Establishment will be paid when the work is accomplished. Payment on the remaining fifty percent (50%) will not be made until a dense stand of grass reaches a height of four inches over 90% of the seeded areas and there are no isolated bare areas greater than 10 square feet as determined by Engineer. The Contractor shall be responsible for erosion control until turf is established and accepted. Owner will assume control of turf maintenance, to include watering and mowing, after final completion. 1.4 DELIVERY, STORAGE, AND HANDLING OF MATERIAL A. Each kind of seed shall be furnished and delivered, unless otherwise approved, in separate, sealed containers, or bags acceptably sewn tight or sealed. B. Seed which has become wet, moldy or otherwise damaged in transit or storage will not be acceptable. Seed, after delivery to the Contractor, shall be stored in such a manner as to protect it from damage or deterioration from any sources. Provisional acceptance of seed must be obtained before the seed is sown. Final acceptance may be subject to the results of sampling and testing. C. All limestone shall be furnished in paper bags weighing less than 100 pounds with the name of the material, net weight of contents and the manufacturers name and guaranteed analysis PERMANENT TURF ESTABLISHMENT 02936-1 SECTION 02936 20C17048.00 appearing on each container. Bulk deliveries shall be accompanied by a certificate covering the names, weight and analysis as specified herewith for packaged material. D. Fertilizer shall be furnished in paper bags weighing less than 100 pounds each with the name of the material, net weight of contents and the manufacturer's name and guaranteed analysis appearing on each container. PART2 PRODUCTS 2.1 MATERIALS A. All limestone shall be as described on the erosion control plans. B. The type of fertilizer and approximate application rate required shall be determined by a qualified soil analyst based on soil samples provided by the Contractor. C. Seed mixture shall be as specified on the erosion control plans. Material other than pure live seed shall comprise only nonviable seed, chaff, hulls, live seed of crop plants other than those specified, harmless inert matter and weed seeds except that weed seed other than seeds of noxious weeds will be permitted up to one percent of the gross weight of each kind of seed. Legume seeds shall be accompanied by adequate amounts of their proper inoculants unless accompanied by certification of preinoculation. D. The weight of pure live seed in each lot of seed is computed as shown on the erosion control plans. The inoculants for treating seeds of legumes shall be as shown on the erosion control plans. It shall be supplied only from manufacturers licensed to sell legume inoculants in the Commonwealth of Virginia. Each kind of seed shall be furnished and delivered, unless otherwise approved, in separate, sealed containers, or bags acceptably sewn tight or sealed. All seeds and seed labels shall be in accordance with State and Federal Laws, Rules and Regulations as each is in effect on the date of Project advertisement. The Contractor shall furnish the vendor with the specifications for the material. E. Mulching material shall consist of wood chips and/or straw. Mulching material shall be free from mature seed bearing stalks or roots of prohibited or noxious weeds. F. Erosion Control Mats shall be as shown on erosion control plans. PART 3 EXECUTION 3.1 PROCEDURE A. Seeding shall be done at such times of the year when soil conditions are suitable for tillage and when moisture and temperatures are suitable for plant growth. Climatic conditions shall be suitable for the application of materials and proper operation of tillage and seeding equipment. All work required for seeding for permanent vegetation will be accomplished under appropriate conditions. All soil areas with slopes of three horizontal to one vertical or flatter shall be thoroughly tilled to a depth of four inches or as approved by the Engineer by discing, harrowing, scarifying or other approved methods. When slopes are steeper than three horizontal to one vertical, tillage shall be limited to horizontal scarification to eliminate erosion irregularities and break up any surface crust immediately before seeding. All tillage shall be carried out as nearly on the contour as practicable to reduce the erosion hazard. All surface stones and debris over three inches in any dimension shall be removed and disposed of as approved by the Engineer. B. Seeding dates are indicated on seed mixture table shown in the erosion control plans. PERMANENT TURF ESTABLISHMENT 02936-2 SECTION 02936 20C17048.00 C. Limestone shall be applied at the rate shown on the erosion control plans. D. A commercial fertilizer shall be applied at the rate specified by the qualified soil analyst referred to in Part 2.1.A above. E. Lime and fertilizer shall be applied as shown on erosion control plans. F. Seed mixture shall be as shown on the erosion control plans. G. Before any seed is sown, the seed bed shall be tilled as previously described, smoothed and brought to grade. Prior to the sowing of seed, the soil shall be raked to a depth of % inches. All raking shall be done in a direction parallel to the contour lines on the slope and not uphill or downhill. All sticks, stones, weeds, roots or other objectionable material appearing on the surface shall be removed. The finished surface of the soil shall be maintained in a true and even condition during the sowing of the seed. H. The seed shall be uniformly sown on the designated areas as shown on the erosion control plans. I. Mulching material shall be of type/material and applied as shown on erosion control plans. J. For slopes steeper than 3 horizontal to 1 vertical, erosion control mats shall be installed. K. The Contractor shall be responsible for the establishment of a uniform, dense and sturdy growth of Permanent Turf. Areas of sparse growth shall be reseeded at no additional cost to the Owner. L. The Contractor shall be responsible for the maintenance and protection of the Permanent Turf until final completion of the project. Maintenance shall include irrigation, fertilization, and mowing of the Permanent Turf. 1. The contractor shall install a spray irrigation system capable of applying a uniform amount of water on the dam embankment surface. An irrigation system is not required for other areas of the project, but is recommended. • END OF SECTION PERMANENT TURF ESTABLISHMENT 02936-3 DIVISION 5 METALS DIVISION 5 — METALS 05500 Metal Fabrications SECTION 05500 METAL FABRICATIONS PART GENERAL 1.1 SECTION INCLUDES SECTION 05500 20C17048.00 A. Shop fabricated items, including: 1. Trash racks 1.2 RELATED SECTIONS A. Section 01300, Submittals 1.3 MEASUREMENT AND PAYMENT A. Metal Fabrications, manufactured, constructed and installed, as described in these Specifications, shall be measured for payment as a lump sum item. Partial payment shall be made in accordance with the submitted Schedule of Values. Payment will be at the lump sum price for Payment Item "Metal Fabrications", and shall constitute full compensation for furnishing, fabricating, and installing metal items as specified or referenced herein. 1.4 REFERENCES A. ASTM A36 - Structural Steel. B. ASTM A53 - Hot -Dipped, Zinc -coated Welded and Seamless Steel Pipe. C. ASTM A123 - Zinc (Hot -Dip Galvanized) Coatings on Iron and Steel Products. D. ASTM A283 - Carbon Steel Plates, Shapes, and Bars. E. ASTM A193 - Alloy -Steel and Stainless Steel Bolting Materials for High Temperature Service. F. ASTM A276 - Stainless and Heat -Resisting Steel Bars and Shapes. G. AWS D1.1 -Structural Welding Code. H. AWS A2.0 - Standard Welding Symbols. I. ASTM A53 - Steel Pipe. J. ASTM A588 - Structural Steel. K. ASTM A194 - Carbon and Alloy Steel Nuts for Bolts for High -Pressure and High -Temperature Service. L. ASTM B221 - Aluminum and Aluminum -Alloy Extruded Bar, Rod, Wire, Shape, and Tube. M. SSPC - Steel Structures Painting Council. N. AISI- Standards for Stainless Steel. METAL FABRICATIONS 05500-1 SECTION 05500 20C17048.00 O. AISC - Cade of Standard Practice. 1.5 SUBMITTALS A. A Schedule of Values shall be submitted with a cost breakdown for each item the contractor elects to invoice for progress payments. The Schedule of Values will be used in determining partial payment for work completed according to these Specifications. B. Product data for products used in miscellaneous fabrications, including paint products and grout. C. Shop drawings detailing fabrication and erection of each fabrication indicated. Include plans, elevations, sections, and details of metal fabrications and their connections. Show anchorage, locking mechanisms, and accessory items. Provide templates for anchors and bolts specified for installation under other sections. 1. Indicated welded connections using standard AWS A2.0 welding symbols. Indicate net weld length. D. Samples representative of materials and finished products as may be requested by Engineer. E. Welder certificates signed by Contractor certifying that welders comply with requirements specified under "Quality Assurance" article. 1.6 QUALITY ASSURANCE A. Like items of equipment provided hereunder, although for different services, shall be the end products of one manufacturer in order to achieve standardization for appearance, operation, maintenance, spare parts, and manufacturer's service. B. Fabricator Qualifications: Firm experienced in successfully producing metal fabrications similar to that indicated for this Project, with sufficient production capacity to produce required units without causing delay in the Work. C. Qualify welding processes and welding operators in accordance with AWS D1.1 "Structural Welding Code — Steel", D1.3 "Structural Welding Code - Sheet Steel", and D1-2 "Structural Welding Code — Aluminum". 1. Certify that each welder has satisfactorily passed AWS qualification tests for welding processes involved and, if pertinent, has undergone recertification. 1.7 DELIVERY, STORAGE, AND HANDLING A. Preparation for Shipment: 1. Insofar as practical, factory assemble items specified herein. 2. Package and clearly tag parts and assemblies that of necessity are shipped unassembled, in a manner that will protect materials from damage, and facilitate identification and field assembly. B. Store items on pallets or shelving in a covered storage area. PART2 PRODUCTS 2.1 GENERAL METAL FABRICATIONS 05500-2 (•tea 2.3 2.4 SECTION 05500 20C17048.00 A. The use of the manufacturer's name and model or catalog number is for the purpose of establishing the standard of quality and general configuration desired only. Other manufacturers' equipment will be considered in accordance with the General Conditions. B. Furnish Miscellaneous Items: 1. Miscellaneous metalwork and castings as shown, or as required to secure various parts together and provide a complete installation. 2. Items specified herein are not intended to be all inclusive. Provide metalwork and castings shown, specified, or which can reasonably be inferred as necessary to complete the project. MATERIALS A. Unless otherwise indicated, materials shall meet the latest issue of ASTM Specifications as follows: Item ASTM Specification Steel Plates Shapes Steel Pipe Steel Plates Stainless Steel: Bars, Shapes & Plates Bolts Nuts Aluminum: Rail, Post & Elbow Pipe Beams, Shapes, Checkered Plate & Support Bars: Bar Grating & Toe Boards A36 A53 Type S Grade B A588, Grade 50 A276, Type 304 A193, AISI 304 A194, AISI 304 B221, Al I oy 6061-T6, Anodized Finish B221, Al I oy 6061-T6, Mill Finish B221 Alloy 6063-T6, Mill Finish B. Welding Materials: AWS D1.1; type required for materials being welded. C. Anchor Bolts: stainless steel, of size and type recommended by manufacturer. CONNECTIONS A. Connections to aluminum shall be aluminum or stainless steel unless otherwise noted. All screws and bolts used for aluminum shall be stainless steel. B. Tamper resistant self tapping screws, where specified, shall be stainless steel TORX screws, or equal. Contractor shall provide Owner with two TORX keys and insert bits. FABRICATION A. Fit and shop assemble items in largest practical sections, for delivery to site. METAL FABRICATIONS 05500-3 SECTION 05500 20C17048.00 B. Fabricate items with joints tightly fitted and secured. C. Continuously seal non -bolted joined members by continuous welds. D. Grind exposed joints flush and smooth with adjacent finish surface. Make exposed joints butt tight, flush, and hairline. Ease exposed edges to small uniform radius. E. Supply components required for anchorage of fabrications. Fabricate anchors and related components of same material and finish as fabrication, except where specifically noted otherwise. 2.5 FABRICATION TOLERANCES A. Squareness: 1/16 inch maximum difference in diagonal measurements. B. Maximum Misalignment of Adjacent Members: 1/16 inch. C. Maximum Bow: 1/8 inch in 48 inches. D. Maximum Deviation From Plane: 1/16 inch in 48 inches. 2.6 WELDING A. General: 1. Meet codes for Arc and Gas Welding in Building Construction of the AWS and AISC for techniques of welding employed, appearance, quality of welds made, and the methods of correcting defective work. 2. Welding Surfaces: Free from loose scale, rust, grease, paint, and other foreign material, except mill scale which will withstand vigorous wire brushing may remain. 3. A light film of linseed oil may likewise be disregarded. 4. Do not weld when temperature of base metal is lower than zero degrees F. 5. Finished members shall be true to line and free from twists. 6. Prepare welds and adjacent areas such that there is: a. No undercutting or reverse ridges on the weld bead. b. No sharp peaks or ridges along the weld bead. 7. Grind embedded pieces of electrode or wire flush with adjacent surface of weld bead. B. Welding Operators: As specified in PART 1, Article QUALITY ASSURANCE. C. Aluminum: 1. Weld with Gas Metal Arch (MIG) or Gas Tungsten Arc (TIG) processes in accordance with manufacturer's written instructions as approved, and in accordance with recommendations of the American Welding Society contained in the Welding Handbook, as last revised. 2. Grind smooth all exposed aluminum welds. 3. No field welding of aluminum will be allowed. 2.7 FINISHES - STEEL A. Clean surfaces of rust, scale, grease, and foreign matter prior to finishing. METAL FABRICATIONS 05500-4 SECTION 05500 20C17048.00 B. Structural Steel Members: Galvanize after fabrication to ASTM At 23. 2.8 TRASH RACKS A. Field measure and install according to Construction Plans. B. Riser structure trash racks for the low-level valve inlet shall be provided as indicated on the Construction Plans. C. Riser structure trash racks for the weirs shall be provided as indicated on the Construction Plans. 1. Riser structure trash racks indicated on the Construction Plans may be substituted with StormRax by Plastic Solutions, Inc., or an approved equal. Trash racks shall be mounted with 1/2" x 2-1/2" expansion anchor bolt. The racks should be fabricated with 1" diameter holes spaced at no more than 12 inches on -center. 3. The effective grid opening of the trash racks shall be 6" x 6" PART 3 EXECUTION 3.1 EXAMINATION A. Field Measurements: Check actual locations of walls, openings, and other construction to which metal fabrications must fit, by accurate field measurements before fabrication; show recorded measurements on final shop drawings. Coordinate fabrication schedule with construction progress to avoid delay of work. 3.2 PREPARATION A. Supply items required to be embedded in concrete with setting templates to appropriate sections. 3.3 INSTALLATION A. General 4. Install items plumb and level where appropriate, accurately fitted, and free from distortion or defects. Completed installations shall be rigid, substantial, and neat in appearance. 5. Provide for erection loads, and for sufficient temporary bracing to maintain true alignment until completion of erection and installation of permanent attachments. 6. Perform field welding in accordance with AWS D1.1. 7. Obtain approval prior to site cutting or making adjustments not scheduled. 8. Erect structural steel in accordance with applicable portions of AISC Code of Standard Practice, except as modified. 9. Install commercially manufactured products in accordance with manufacturer's recommendations. METAL FABRICATIONS 05500-5 SECTION 05500 20C17048.00 10. Install expansion anchor bolts in concrete no sooner than seven days after concrete placement, at which time the bolts may be tightened to snug only. Full tightening shall not be performed until 28 days after concrete placement. 11. For items embedded in concrete, ensure adequate compaction around anchorages by thorough vibration. B. Aluminum 1. Erection: In accordance with the Aluminum Association Standards and manufacturer's recommendations. 2. Do not remove mill markings from concealed surfaces. 3. Remove inked or painted identification marks on exposed surfaces not otherwise coated after installed material has been inspected. 3.4 ERECTION TOLERANCES A. Maximum Variation From Plumb: Y inch in ten feet. B. Maximum Offset From True Alignment: %inch. 3.5 ANCHOR BOLTS A. Accurately locate and hold anchor bolts in place with templates at the time concrete is placed. 3.6 CONCRETE ANCHORS A. Do not begin installation until concrete or masonry receiving anchors have attained design strength. B. Do not install an anchor with its centedine closer than six times its diameter to either an edge of concrete or masonry, or to another anchor, unless specifically shown otherwise. C. Install in accordance with manufacturer's written instructions. Use manufacturer's recommended drills and equipment. D. Adhesive Anchors: Do not install when temperature of concrete is below 35 degrees F or above 110 degrees F. 3.7 STAINLESS STEEL FASTENERS LUBRICANT (ANTISEIZING) A. Apply specified antiseizing lubricant to threads prior to making up connections. 3.8 ELECTROLYTIC PROTECTION A. Aluminum: 1. Where in contact with dissimilar metals, or embedded in masonry or concrete, protect surfaces with a coat of Coppers Bitumastic or equal. 2. Allow paint to dry before installation of the material. 3. Protect painted surfaces during installation. METAL FABRICATIONS 05500-6 SECTION 05500 20C17048.00 4. Should coating become marred, prepare and touch up per paint manufacturer's written instructions. • END OF SECTION METAL FABRICATIONS 05500-7 DIVISION 15 MECHANICAL DIVISION 15—MECHANICAL 15110 Gate Valves SECTION 15110 GATE VALVES PART 1 — GENERAL 1.1 SECTION INCLUDES SECTION 15110 20C17048.00 A. Furnish all labor, equipment and materials required to supply, install and shop test all Gate Valves, trench adapters, piping extensions, and other related parts as shown on the Construction Plans and/or as herein specified. 1.2 RELATED SECTION A. Section 01300, Submittals 1.3 MEASUREMENT AND PAYMENT A. An eight (8) inch diameter Gate Valve with flanged ends, manufactured, installed and tested in accordance with the Construction Plans and Specifications shall be measured as a complete lump sum unit. Payment will be made at the lump sum price for Payment Items "Gate Valve, 8-inch." 1.4 REFERENCES A. The gate valve shall be a flanged end, non -rising stem with resilient wedge. The valve shall be eight (8) inches in diameter. Stem extension and or trench adapters shall be provided for each gate to the length shown on the drawings. The valve shall have a minimum working pressure of 250 psi. 1.5 SUBMITTALS A. Submit for review and approval proof that each valve of a particular size and type and the valve manufacturer meet above -stated standards, including assembly drawing of the valve with complete Bill of Material. 1.6 MANUFACTURER'S RESPONSIBILITY A. All Gate Valves shall be purchased from an approved manufacturer who shall have at least five years of experience in the manufacture of identical valves. The valve manufacturer shall be completely responsible for the valve assembly including operators. B. All valves and operators shall be assembled and tested at the valve manufacturer's facility and shall be delivered to the construction site as a package unit. C. The valve manufacturer shall guarantee the materials and workmanship of the complete valve, operator and/or electric actuator assembly. GATE VALVES 15110-1 SECTION 15110 20C17048.00 PART 2 — PRODUCTS 2.1 GENERAL A. The gate valves, trench adapters, and associated parts are to be AMERICAN Flow Control Series 2500 Resilient Wedge Gate Valves and AMERICAN Flow Control Trench Adapters manufactured by American Cast Iron Pipe Company, or approved equal. B. Provide iron body, bronze mounted, double disc parallel seat type Gate Valves. C. Provide all Gate Valves of vertical design. D. Provide Gate Valves with flanged ends. Flanges shall be in accordance with AWWA C115 drilled to the 125 American Standard drilling; mechanical joints shall be in accordance with AWWA C111. E. Provide Gate Valves of the non -rising stem design. PART 3 — EXECUTION 3.1 INSTALLATION OF GATE VALVES A. Furnish and install the Gate Valves as shown on the Construction Plans. B. In no circumstances shall the valves be installed in a manner such that the valves support the adjacent piping. C. Install pipe supports and valve stands necessary to adequately support the weight of the valves without imposing undue stress on the adjacent piping and joints. 3.2 TESTING OF VALVES A. The valve installer shall test the valve in order to verify the following: 1. Valve opens fully. 2. Valve closes fully, valve disc seat rings contact the body seat rings continuously and uniformly. 3. Valve opens when hand wheel is turned counterclockwise. 4. Correct any deficiency found in the valve installation and retest the final installation to verify its correctness. • END OF SECTION GATE VALVES 15110-2