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7096 LLWTP Addendum No 23010 Gaylord Parkway Suite 190 Frisco, TX 75034 TEL 972.377.7480 FAX 972.377.8380 www.GarverUSA.com Page 1 of 3 ADDENDUM NO. 2 Date: July 15, 2019 Project Name: Lake Lewisville WTP Dewatering Improvements Garver Project No. 18088080 This addendum shall be a part of the Plans, Contract Documents and Specifications to the same extent as though it were originally included therein, and it shall supersede anything contained in the Plans, Contract Documents, and Specifications with which it might conflict. This Addendum No. 1, including all attachments shall become part of the Contract and all provisions of the Contract shall apply thereto, with exception to the items listed under “Other Project Information” at the end of this Addendum No. 1, which are supplements provided for the Contractor’s convenience. The time provided for completion of the Contract has not been changed as noted in this addendum. Acknowledgement of receipt of this Addendum must be noted in the appropriate section of the Bid Form and included with the Contract Documents. A. SPECIFICATIONS - Volumes 1 & 2 1. Remove the following specifications sections in their entirety, and replace with the same, attached hereto: a. 01 50 00 – TEMPORARY FACILITIES AND CONTROLS b. 26 90 40 – PROCESS CONTROL DESCRIPTIONS c. 40 23 39.1 – PROCESS PIPING SCHEDULE d. 44 42 56.29 – WET-PIT SUBMERSIBLE PUMPS e. 44 46 26.13 – GRAVITY THICKENER MECHANISMS 2. Revise Specification Section 01 32 00 – CONSTRUCTION PROGRESS DOCUMENTATION as follows: a. In paragraph 1.3.D, “Scheduler shall be dedicated full time to this project, located on site. All scheduling software and hardware shall be located on-site. Scheduler shall attend all project meetings called for under Section 01 31 19, PROJECTS MEETINGS.” 3. Revise Specification Section 26 22 00 – LOW VOLTAGE TRANSFORMERS follows: a. In paragraph 2.1.A, add “3. ABB Industrial Solutions” 4. Revise Specification Section 26 24 16 – PANELBOARDS as follows: a. In paragraph 2.2.A, add “3. ABB Industrial Solutions” b. In paragraph 2.3.A, add “3. ABB Industrial Solutions” c. In paragraph 2.4.A, add “3. ABB Industrial Solutions” 5. Revise Specification Section 26 28 16 – ENCLOSED SWITCHES AND CIRCUIT BREADKERS as follows: a. In paragraph 2.1.A, add “3. ABB Industrial Solutions” b. In paragraph 2.2.A, add “3. ABB Industrial Solutions” c. In paragraph 2.3.A, add “3. ABB Industrial Solutions” d. In paragraph 2.4.A, add “3. ABB Industrial Solutions” 18088080 LLWTP Dewatering Improvements July 12, 2019 ADDENDUM NO. 2 Page 2 of 3 6. Revise Specification Section 46 21 75 – SHAFTLESS SCREW CONVEYORS as follows: a. In paragraph 2.1.B, add “5. Custom Conveyor Corporation” B. STANDARD DETAILS - Volume 3 1. Add the following standard details in their entirety, attached hereto: a. 22-0529-001 ADJUSTABLE FLOOR MOUNTED PIPE SUPPORT C. DRAWINGS - Volume 4 1. Remove the following drawing sheets in their entirety, and replace with the same, attached hereto: a. 05-C303, Sheet 19 b. 05-C304, Sheet 20 c. 08-I681, Sheet 25 d. 75-M131, Sheet 57 e. 77-M131, Sheet 88 f. 77-M301, Sheet 95 g. 77-M302, Sheet 96 h. 77-M901, Sheet 99 i. 77-E132, Sheet 101 j. 90-E601, Sheet 109 k. 90-T901, Sheet 116 D. OTHER PROJECT INFORMATION (UPLOADED TO ONLINE PLAN ROOM UNDER Q&A SECTION) 1. Multiple bidders inquired about the coating of the gravity thickener mentioned in Specification 44 46 26.13 which has been attached to this addendum. 2. A bidder requested TR piping that is buried to be added to the Process Piping Schedule which has been attached to this addendum. 3. On 05-C303, the existing 30” PD should instead be 24” with a depth of nine feet to the bottom of the pipe. The existing pipe material is unknown. 4. Geotechnical report dated March 15, 2019, prepared by ETTL Engineers and Consultants, Inc 1717 East Erwin Street Tyler, Texas 75702. Entitled “Lake Lewisville Water Treatment Plant Dewatering Improvements, Denton, Texas, Geotechnical Investigation, ETTL Job No. G5069-1812”. This report is provided only for the Contractor’s convenience; this report and its inclusive drawings are not Contract Documents. 5. The following questions were received and responded to: a. What is the estimated cost range for this project? i. The estimated cost range is between $8 - $8.5 million. b. Is it required to provide the Engineer a copy of Primavera? i. Yes, Primavera is our standard. c. Are MJ fittings with Megalugs acceptable for Ductile Iron restraint? i. Yes, Megalugs are acceptable. d. Can you provide a spec for the SDR 26 pipe in 05-C303 i. SDR 26 is specified in 40 23 39.43. e. On Specification 44 42 56.29, there was a request to add Sulzer/ABS as an acceptable manufacturer. i. No additional manufacturers will be listed at this time. f. On Specification 40 23 43, there was a request to add Victaulic as a manufacturer. 18088080 LLWTP Dewatering Improvements July 12, 2019 ADDENDUM NO. 2 Page 3 of 3 i. No additional manufacturers will be listed at this time. g. Are access card-readers required on overhead doors? i. Card access is not required at roll-up doors. Overhead doors should have switches to indicate if doors have been opened or closed. h. Multiple questions were received regarding door hardware and electric locks. i. ABE Corp. shall coordinate directly with the providers of door hardware to determine the appropriate electric strike locks to use for doors on this project. i. Which wall of the electrical room should be used for access control panels? i. Access control panels shall be installed on the north wall of the electrical room, to the east of the west door into the belt press room. Please refer to updated drawing 77-E132 attached to this addendum. j. Multiple questions were received regarding conduits location and layouts. i. Drawings 77-E132, 90-E601, and 90-T901 have been updated to address these questions and provide clarification. By: Ikram J Sayed, P.E. Project Manager Attachments: 1. Specifications a. 01 50 00 – TEMPORARY FACILITIES AND CONTROLS b. 26 90 40 – PROCESS CONTROL DESCRIPTIONS c. 40 23 39.1 – PROCESS PIPING SCHEDULE d. 44 42 56.29 – WET-PIT SUBMERSIBLE PUMPS e. 44 46 26.13 – GRAVITY THICKENER MECHANISMS 2. Standard Details a. 22-0529-001 ADJUSTABLE FLOOR MOUNTED PIPE 3. Drawings a. 05-C303, Sheet 19 b. 05-C304, Sheet 20 c. 08-I681, Sheet 25 d. 75-M131, Sheet 57 e. 77-M131, Sheet 88 f. 77-M301, Sheet 95 g. 77-M302, Sheet 96 h. 77-M901, Sheet 99 i. 77-E132, Sheet 101 j. 90-E601, Sheet 109 k. 90-T901, Sheet 116 4. Geotechnical Report END OF ADDENDUM NO. 2 Project No. 18088080 1 Section 01 50 00 Lake Lewisville WTP Dewatering Design Temporary Facilities and Controls SECTION 01 50 00 - TEMPORARY FACILITIES AND CONTROLS PART 1 - GENERAL 1.1 SUMMARY A. Section Includes: 1. Furnishing, maintaining, and removing construction facilities and temporary controls, including temporary utilities, construction aids, barriers and enclosures, security, access roads, temporary controls, project sign, field offices and sheds, and removal after construction. B. Related sections: 1. Section 01 14 00 – Work Restrictions. 2. Section 01 32 00 – Construction Progress Documentation 3. Section 01 33 00 – Submittal Procedures 4. Section 01 34 00 – Photographic and Videographic Documentation 1.2 REFERENCES A. The following is a list of standards which may be referenced in this section: 1. American Association of Nurserymen: American Standards for Nursery Stock. 2. Federal Emergency Management Agency. 3. NFPA, National Fire Prevention Standard for Safeguarding Building Construction Operations. 4. Telecommunications Industry Association (TIA); Electronic Industries Alliance (EIA): 568B, Commercial Building Telecommunications Cabling Standard. 5. U.S. Department of Agriculture: Urban Hydrology for Small Watersheds. 6. U.S. Weather Bureau: Rainfall-Frequency Atlas of the U.S. for Durations from 30 Minutes to 24 Hours and Return Periods from 1 to 100 Years. 1.3 SUBMITTALS A. Informational Submittals: 1. General: For products specified to be furnished under this Section, submit product data in accordance with Section 01 33 00. 2. For Temporary Piping Systems: a. Submit layout drawings showing proposed routing of piping, including proposed pipe support and pipe restraint locations. b. Submit product data for piping, fittings, appurtenances, restraints, supports, and all other components of the temporary piping system. c. Submit all information at least 28 days prior to when each temporary piping system is scheduled to be installed and allow 14 days for review and comment by ENGINEER and OWNER. 3. For Temporary Pumping Systems: a. Submit pump data, performance curves, and other operating information as specified in Section 01 33 00. b. Submit sketches showing layout of temporary pumping system, including pump quantity, configuration in wet well, and proposed piping layout specified in Paragraph 1.02 B. c. Submit piping headloss calculations based on proposed temporary piping system layout. d. Submit all information at least 28 days prior to when the temporary pumping system is scheduled to be installed and allow 14 days for review and comment by ENGINEER and OWNER. Project No. 18088080 2 Section 01 50 00 Lake Lewisville WTP Dewatering Design Temporary Facilities and Controls 4. Copies of permits and approvals for construction as required by Laws and Regulations and governing agencies. 5. Temporary Utility Submittals: a. Electric power supply and distribution plans. b. Water supply and distribution plans. c. Drainage plans. d. Sanitary sewer. 6. Temporary Construction Submittals: a. Access Roads: Routes, cross-sections, and drainage facilities. b. Parking area plans. c. Contractor’s field office, storage yard, and storage building plans, including gravel surfaced area. d. Fencing and protective barrier locations and details. e. Engineer’s field office plans. f. Staging area location plan. g. Traffic and Pedestrian Control and Routing Plans: As specified herein, and proposed revisions thereto. 7. Temporary Control Submittals: a. Noise control plan. b. Plan for disposal of waste materials and intended haul routes. 1.4 MOBILIZATION A. Mobilization shall Include, but Not be Limited to, these Principal Items: 1. Obtaining required permits. 2. Moving Contractor’s field office and equipment required for first month operations onto Site. 3. Installing temporary construction power, wiring, and lighting facilities. 4. Providing onsite communication facilities, including telephones. 5. Providing onsite sanitary facilities and potable water facilities as specified and as required by Laws and Regulations, and governing agencies. 6. Arrange for and erection of Contractor’s work and storage yard. 7. Posting OSHA required notices and establishing safety programs and procedures. 8. Have Contractor’s superintendent at Site full time. B. Use area designated for Contractor’s temporary facilities as shown on Drawings. 1.5 PROTECTION OF WORK AND PROPERTY A. Comply with Owner’s safety rules while on Owner’s property. B. Keep Owner informed of serious onsite accidents and related claims. C. Use of Explosives: No blasting or use of explosives will be allowed onsite. 1.6 VEHICULAR TRAFFIC A. Traffic Routing Plan: Show sequences of construction affecting use of roadways, time required for each phase of the Work, provisions for decking over excavations and phasing of operations to provide necessary access, and plans for signing, barricading, and striping to provide passages for pedestrians and vehicles. 1.7 TEMPORARY UTILITIES A. Temporary Electrical Power: 1. Arrange with local utility to provide adequate temporary electrical service. Project No. 18088080 3 Section 01 50 00 Lake Lewisville WTP Dewatering Design Temporary Facilities and Controls 2. Provide and maintain adequate jobsite power distribution facilities conforming to applicable Laws and Regulations. 3. Provide, maintain, and pay for electric power for performance of the Work except for power required for the final 7-day operational test: a. When using permanent facilities, provide separate meter and reimburse OWNER for power used in connection with performance of the Work. B. Temporary Electrical Lighting: 1. In work areas, provide temporary lighting sufficient to maintain lighting levels during working hours not less than lighting levels required by Occupational Safety and Health Administration (OSHA) and state agency which administers OSHA regulations where Project is located. 2. When available, permanent lighting facilities may be used in lieu of temporary facilities: a. Prior to Substantial Completion of the Work, replace bulbs, lamps, or tubes used by CONTRACTOR for lighting. C. Temporary Heating, Cooling, and Ventilating: 1. Heat and ventilate work areas to protect the Work from damage by freezing, high temperatures, weather, and to provide safe environment for workers. 2. Permanent heating system may be utilized when sufficiently completed to allow safe operation. D. Temporary Water: 1. Pay for and construct facilities necessary to furnish potable water for human consumption and non-potable water for use during construction. 2. Remove temporary piping and connections and restore affected portions of the facility to original condition before Substantial Completion. 3. Pay for water used for construction prior to Substantial Completion. OWNER will provide water for 7-day final test. E. Temporary Sanitary Facilities: 1. Provide suitable and adequate sanitary facilities that are in compliance with applicable Laws and Regulations. 2. At completion of the Work, remove sanitary facilities and leave site in neat and sanitary condition. F. Temporary Fire Protection: Provide sufficient number of fire extinguishers of type and capacity required to protect the Work and ancillary facilities. G. First Aid: Post first aid facilities and information posters conforming to requirements of OSHA and other applicable Laws and Regulations in readily accessible locations. H. Utilities in Existing Facilities: See Section 01 14 00, WORK RESTRICTIONS. 1.8 CONSTRUCTION AIDS A. Provide railings, kick plates, enclosures, safety devices, and controls required by Laws and Regulations and as required for adequate protection of life and property. B. Use construction hoists, elevators, scaffolds, stages, shoring, and similar temporary facilities of ample size and capacity to adequately support and move loads. C. Design temporary supports with adequate safety factor to assure adequate load bearing capability: Project No. 18088080 4 Section 01 50 00 Lake Lewisville WTP Dewatering Design Temporary Facilities and Controls 1. When requested, submit design calculations by professional registered engineer prior to application of loads. 2. Submitted design calculations are for information and record purposes only. D. Accident Prevention: 1. Exercise precautions throughout construction for protection of persons and property. 2. Observe safety provisions of applicable Laws and Regulations. 3. Guard machinery and equipment, and eliminate other hazards. 4. Make reports required by authorities having jurisdiction, and permit safety inspections of the Work. 5. Before commencing construction work, take necessary action to comply with provisions for safety and accident prevention. E. Barricades: 1. Place barriers at ends of excavations and along excavations to warn pedestrian and vehicular traffic of excavations. 2. Provide barriers with flashing lights after dark. 3. Keep barriers in place until excavations are entirely backfilled and compacted. 4. Barricade excavations to prevent persons from entering excavated areas in streets, roadways, parking lots, treatment plants, or other public or private areas. F. Warning Devices and Barricades: Adequately identify and guard hazardous areas and conditions by visual warning devices and, where necessary, physical barriers: 1. Devices shall conform to minimum requirements of OSHA and State agency which administers OSHA regulations where Project is located. G. Hazards in Public Right-of-Way: 1. Mark at reasonable intervals, trenches and other continuous excavations in public right-of- way, running parallel to general flow of traffic, with traffic cones, barricades, or other suitable visual markers during daylight hours: a. During hours of darkness, provide markers with torches, flashers, or other adequate lights. 2. At intersections or for pits and similar excavations, where traffic may reasonably be expected to approach head on, protect excavations by continuous barricades: a. During hours of darkness, provide warning lights at close intervals. H. Hazards in Protected Areas: Mark or guard excavations in areas from which public is excluded, in manner appropriate for hazard. I. Above Grade Protection: On multi-level structures, provide safety protection that meets requirements of OSHA and State agency which administers OSHA regulations where Project is located. J. Protect existing structures, trees, shrubs, and other items to be preserved on Project site from injury, damage or destruction by vehicles, equipment, worker or other agents with substantial barricades or other devices commensurate with hazards. K. Fences: 1. Enclose site of the Work with fence adequate to protect the Work against acts of theft, violence and vandalism. 2. Enclose temporary offices and storage areas with fence adequate to protect temporary facilities against acts of theft, violence and vandalism. 3. When entire or part of site is to be permanently fenced, permanent fence may be built to serve for both permanent and temporary protection of the work site, provided that damaged or defaced fencing is replaced prior to Substantial Completion. Project No. 18088080 5 Section 01 50 00 Lake Lewisville WTP Dewatering Design Temporary Facilities and Controls 4. Protect temporary and permanent openings and close openings in existing fences to prevent intrusion by unauthorized persons. Bear responsibility for protection of plant and material on site of the Work when openings in existing fences are not closed. 5. During night hours, weekends, holidays, and other times when no work is performed at site, provide temporary closures or enlist services of security guards to protect temporary openings. 6. Fence temporary openings when openings are no longer necessary. 1.9 SECURITY A. Make adequate provision for protection of the work area against fire, theft, and vandalism, and for protection of public against exposure to injury. 1.10 ACCESS ROADS A. General: 1. Build and maintain access roads to and on site of the Work to provide for delivery of material and for access to existing and operating plant facilities on site. 2. Build and maintain dust free roads which are suitable for travel at 20 miles per hour. B. Off-Site Access Roads: 1. Build and maintain graded earth roads. 2. Build roads only in public right-of-way or easements obtained by OWNER. 3. Obtain rights-of-way or easements when electing to build along other alignment. C. On-Site Access Roads: 1. Maintain access roads to storage areas and other areas to which frequent access is required. 2. Maintain similar roads to existing facilities on site of the Work to provide access for maintenance and operation. 3. Protect buried vulnerable utilities under temporary roads with steel plates, wood planking, or bridges. 4. Maintain on-site access roads free of mud. Under no circumstances shall vehicles leaving the site track mud off the site onto the public right-of-way. 1.11 TEMPORARY CONTROLS A. Dust Control: 1. Prevent dust nuisance caused by operations, unpaved roads, excavation, backfilling, demolition, or other activities. 2. Control dust by sprinkling with water, use of dust palliatives, modification of operations, or other means acceptable to agencies having jurisdiction. B. Noise Control: 1. In inhabited areas, particularly residential, perform operations in manner to minimize noise. 2. In residential areas, take special measures to suppress noise during night hours. C. Mud Control: 1. Prevent mud nuisance caused by construction operations, unpaved roads, excavation, backfilling, demolition, or other activities. Project No. 18088080 6 Section 01 50 00 Lake Lewisville WTP Dewatering Design Temporary Facilities and Controls 1.12 PROJECT SIGN A. Provide and maintain Project identification sign consisting of painted 8 foot wide by 4 foot high exterior grade plywood and minimum 10 foot long 4 by 4 lumber posts, set in ground at least 3 feet, with exhibit lettering by professional sign painter using no more than 5 sign colors: 1. List at least the title of the Project, and names of the OWNER, ENGINEER, and CONTRACTOR. B. Erect Project identification sign where directed. 1.13 REMOVAL A. Remove temporary buildings and furnishings before inspection for Substantial Completion or when directed. B. Clean and repair damage caused by installation or use of temporary facilities. C. Remove underground installations to minimum depth of 24 inches and grade to match surrounding conditions. D. Restore existing facilities used during construction to specified or original condition. 1.14 TEMPORARY PROCESS PIPING A. CONTRACTOR shall provide all piping, appurtenances, and other materials as required to provide temporary piping systems as specified herein, as indicated on the Drawings, and as needed to perform the Work. B. CONTRACTOR shall field route piping as needed and as field conditions dictate, unless otherwise indicated on the Drawings, and determine appropriate lengths of piping and quantity/type of pipe fittings needed to construct temporary piping system. Do not block access points such as stairs, doors, and walkways to existing facilities unless approved in writing by the OWNER. C. Restrain piping at valves and at fittings where piping changes direction, changes sizes, and at ends: 1. When piping is buried, use concrete thrust block or mechanical restraints. 2. When piping is exposed or under water, use mechanical or structural restraints. 3. Determine thrust forces by multiplying the nominal cross sectional area of the piping by the operating pressure of the piping. D. Temporary piping systems shall be installed in a manner that will not damage existing or new facilities. E. Unless indicated otherwise, piping material, including gaskets, shall be suitable for the process fluid requiring temporary piping. F. After Temporary Piping System is no longer required: 1. Remove temporary piping system. 2. Clean and repair damage caused by installation or use of temporary piping system. 3. Restore existing facilities to original condition. Project No. 18088080 7 Section 01 50 00 Lake Lewisville WTP Dewatering Design Temporary Facilities and Controls 1.15 TEMPORARY PROCESS PUMPING A. For this contract, no temporary pumping is believed to be required to complete the work. To achieve the Contractor’s plan to complete the work, Contractor may require and shall provide temporary pumping system to pump flow as required to complete the work. 1. Anticipated pressure will vary based on headlosses developed and the final length of installed temporary piping. CONTRACTOR shall calculate headlosses and provide pump with sufficient pressure to meet flow requirements. Calculations shall be sealed and signed by a professional engineer registered in the state in which the project is located. 2. Pump(s) shall be capable of passing a solid with a sphere size of 3 inches. 3. Temporary pumps shall be capable of matching plant flow rates through the use of variable flow rate pumping. The use of cycled pumping (i.e, on/off) is not acceptable. Provide all wiring and controls necessary to match plant flow rate based on 4-20 mA signal available at the Operations Building. 4. Provide and pay for all power required to operate temporary pumps. 5. All electrical and instrumentation components will comply with applicable code requirements for the area where the temporary pump is located. 6. Temporary pumping will be required 24 hours per day during the time period when pumping is required and is critical to the proper operation of the OWNER’S treatment plant. Provide 24-hour on-site supervision of pumps to ensure that pumps are always operational and performing as required. Notify the OWNER immediately if temporary pumping cannot be provided. 7. CONTRACTOR shall be responsible for repairing any damage or reimbursing the OWNER for any regulatory fines or additional plant staff time resulting from the CONTRACTOR’S failure to maintain temporary pumping. 8. Provide 100 percent backup (a.k.a., standby, redundant, etc.) pumping capacity equal to the required process flow rate. Backup system shall be capable of providing required pumping capacity immediately upon failure of primary pumping system. 9. All necessary spare equipment and appurtenances shall be available on-site to allow immediate repair and/or replacement of any pumping system component that is not functioning properly. B. Providing temporary piping systems as specified in Paragraph 1.14. C. Temporary pumping of other process flows is not allowed unless approved in writing by the OWNER. D. After Temporary Process Pumping System is no Longer Required: 1. Remove temporary process pumping system. 2. Clean and repair damage caused by installation or use of temporary process pumping system. 3. Restore existing facilities to original condition. PART 2 - PRODUCTS 2.1 FIELD OFFICES AND SHEDS A. CONTRACTOR's Field Office: 1. Maintain on Project Site weathertight space in which to keep copies of Contract Documents, progress schedule, shop drawings, and other relevant documents. 2. Provide field office with adequate space to examine documents, and provide lighting and telephone service in that space. B. ENGINEER's Field Office: 1. Provide separate field office on project site for the exclusive use of the ENGINEER, as follows: Project No. 18088080 8 Section 01 50 00 Lake Lewisville WTP Dewatering Design Temporary Facilities and Controls a. Size: Approximately 8 feet by 24 feet, including a toilet room, with 8-foot minimum ceiling height. b. Construction: Weathertight building constructed at the site, pre- manufactured building, or trailer, with a toilet room containing a water closet and lavatory, partitioned off from the working area. The water closet may be of the chemical type provided that it is a flush type with an approved holding tank. c. Walls and Ceiling: Insulated with finished interior surfaces. d. Openings: At least 4 windows and 1 entrance door, each with cylinder lock and 2 keys. e. Exterior lighting over entrance door. f. 110 volts AC duplex receptacles on each wall with at least 2 in each office. 2. Arrange and Pay For: a. Heating, ventilating, and air conditioning equipment in operating condition. b. Electric wiring, power, and lighting fixtures capable of providing at least 75 foot candles of light on work surfaces. c. A continuous supply of toilet paper, paper hand towels and hand soap for each restroom. d. High speed internet access. e. Bottled drinking water service with dispenser. f. Suitable restroom facilities with sinks with hot and cold water. 3. Provide Following Furnishings and Equipment: a. One office desk complete with drawers and swivel office chair. b. One plan table not less than 36 inches by 96 inches. c. Six straight chairs. d. Two metal filing cabinets, 18 inches by 30 inches by 52 inches, 4 drawers with locks. e. One bookcase with not less than 12 linear feet of shelves for each bookcase. f. Three wastebaskets. g. Refrigerator, minimum 3.0 cubic feet capacity. h. Microwave oven, 1.0 cubic feet. i. Field Office Data Service and Equipment: Provide high-speed Internet access (DSL or cable modem); with a minimum 2.4 gigabit per second download/2.4 gigabit per second for the duration of the project. Contractor is responsible for all maintenance of service and hardware The Contractor shall provide a durable and weather tight system for connecting the Engineer’s trailer to the service provider’s facilities at the jobsite boundary: j. Field Office Local Area Network: Provide all hardware and cabling necessary for computers, printers, etc. to create a local area network for the Engineer: k. Field Office Printer: 1) Provide a multifunctional printer with the capability of printing, copying, and scanning. The Contractor is responsible for all maintenance of equipment and related hardware and software. The printer shall consist of, as a minimum: a) Double-sided printing capability. b) Copy speed: 33 copies per minute. c) Print speed: 30 prints per minute. d) Up to 600 x 600 dpi resolution. e) Original scan/copy paper size: up to 11” x 17”. f) Printer paper size: up to 11” x 17” g) Dry, dual component toner. h) Scan-to-File/ Folder/URL/FTP/Email functionality. i) Full-Color VGA Touch Screen Control Panel. j) 1.5 GB RAM + 250 GB HDD k) Paper, toner, and other supplies for duration of project. 2) Manufacturers: a) Ricoh b) Or equal 4. Locate field office where directed. Project No. 18088080 9 Section 01 50 00 Lake Lewisville WTP Dewatering Design Temporary Facilities and Controls 5. Have field office ready for occupancy within 2 weeks after start of sitework. PART 3 - EXECUTION 3.1 ENGINEER’S FIELD OFFICE A. Make available for Engineer’s use prior to start of the Work at Site and to remain on the Site for minimum of 15 days after final acceptance of the Work. B. Locate where directed by Engineer; level, block, tie down, skirt, provide stairways, and relocate when necessary and approved. Construct on proper foundations, and provide proper surface drainage and connections for utility services. C. Provide minimum 100 ft2 of gravel or crushed rock base, minimum depth of 4”, at each entrance. D. Raise grade under field office, as necessary, to elevation adequate to avoid flooding. E. Provide sanitary facilities in compliance with state and local health authorities. F. Exterior Door Keys: Furnish two sets of keys. G. Telephone: 1. Provide number of incoming lines equal to that specified for telephone type. 2. Provide separate analog modem line. 3. Provide separate analog fax line. 4. Provide appropriate jacks; locate as directed by Engineer. 5. Provide all wiring necessary for a completed telephone system. H. Computer: Provide all required connecting cables and plugs. I. Telecommunications: 1. Arrange and provide for telecommunication service for use during construction. Pay costs of installation, maintenance, and monthly service of internet connection. J. Maintain in good repair and appearance, and provide weekly cleaning service and first-aid kit supplies, and bottled water. K. Replenish, as needed, copy paper, facsimile paper, toner, and computer discs. 3.2 TEMPORARY UTILITIES A. Power: 1. Electric power will be available at or near Site. Determine type and amount available and make arrangements for obtaining temporary electric power service, metering equipment, and pay all costs for electric power used during contract period, except for portions of the Work designated in writing by Engineer as substantially complete. 2. Cost of electric power will be borne by Contractor. B. Lighting: Provide temporary lighting to meet applicable safety requirements to allow erection, application, or installation of materials and equipment, and observation or inspection of the Work. C. Heating, Cooling, and Ventilating: 1. Provide as required to maintain adequate environmental conditions to facilitate progress of the Work, to meet specified minimum conditions for installation of materials, and to protect Project No. 18088080 10 Section 01 50 00 Lake Lewisville WTP Dewatering Design Temporary Facilities and Controls materials, equipment, and finishes from damage due to temperature or humidity. Costs for temporary heat shall be borne by Contractor. 2. Provide adequate forced air ventilation of enclosed areas to cure installed materials, to dispense humidity, and to prevent hazardous accumulations of dust, fumes, vapors, or gases. 3. Pay all costs of installation, maintenance, operation, removal, and fuel consumed. 4. Provide portable unit heaters, complete with controls, oil- or gas-fired, and suitably vented to outside as required for protection of health and property. D. Water: 1. Potable water is available at the site. Secure written permission for connection and use from Owner and meet requirements for use. Contractor shall pay cost to connect water during construction. Owner shall pay cost to for water used during construction. 2. Include costs to connect and transport water to construction areas in Contract Price. 3. Provide a means to prevent water used for testing from flowing back into source pipeline. E. Sanitary and Personnel Facilities: 1. Provide and maintain facilities for Contractor’s employees, Subcontractors, and all other onsite employers’ employees. Service, clean, and maintain facilities and enclosures. F. Telephone Service: 1. Contractor: Arrange and provide onsite telephone service for use during construction by Contractor. Pay costs of installation and monthly bills. 2. Engineer: Arrange and provide onsite telephone system for use during construction. Pay for all installation and basic monthly billing charges. 3. No incoming calls allowed to Owner’s plant telephone system. G. Fire Protection: Furnish and maintain on Site adequate firefighting equipment capable of extinguishing incipient fires. Comply with applicable parts of National Fire Prevention Standard for Safeguarding Building Construction Operations (NFPA No. 241). 3.3 PROTECTION OF WORK AND PROPERTY A. General: 1. Perform Work within right-of-way and easements in a systematic manner that minimizes inconvenience to property owners and the public. 2. Schedule the Work so construction will not interfere with irrigation of cultivated lands or pasturelands. Construction may proceed during irrigation season, provided Contractor constructs temporary irrigation ditches, turnouts, and miscellaneous structures acceptable to property owners. 3. Provide continuous access for livestock through farm areas. Do not cut off ready access to portions of farmlands in which livestock are pastured. Maintain existing fences required to restrain livestock. Keep gates closed and secure. 4. Maintain in continuous service all existing oil and gas pipelines, underground power, telephone or communication cable, water mains, irrigation lines, sewers, poles and overhead power, and all other utilities encountered along line of the Work, unless other arrangements satisfactory to owners of said utilities have been made. 5. Where completion of the Work requires temporary or permanent removal or relocation of existing utility, coordinate all activities with owner of said utility and perform all work to their satisfaction. 6. Protect, shore, brace, support, and maintain underground pipes, conduits, drains, and other underground utility construction uncovered or otherwise affected by construction operations. 7. In areas where Contractor’s operations are adjacent to or near a utility, such as gas, telephone, television, electric power, water, sewer, or irrigation system, and such Project No. 18088080 11 Section 01 50 00 Lake Lewisville WTP Dewatering Design Temporary Facilities and Controls operations may cause damage or inconvenience, suspend operations until arrangements necessary for protection have been made by Contractor. 8. Notify property owners and utility offices that may be affected by construction operation at least 2 days in advance: Before exposing a utility, obtain utility owner’s permission. Should service of a utility become interrupted due to Contractor’s operation, notify proper authority immediately. Cooperate with said authority in restoring service as promptly as possible and bear costs incurred. 9. Do not impair operation of existing sewer system. Prevent construction material, pavement, concrete, earth, volatile and corrosive wastes, and other debris from entering sewers, pump stations, or other sewer structures. 10. Maintain original Site drainage wherever possible. B. Site Security: 1. Erect a temporary security fence for protection of existing facilities. Maintain fence throughout construction period. Obtain Engineer’s written permission before removal of temporary security fencing. 2. Provide and maintain additional temporary security fences as necessary to protect the Work and Contractor-furnished products not yet installed. C. Barricades, Lights, Signs, and Equipment: 1. Provide as required by the Department of Transportation in the state having jurisdiction and in sufficient quantity to safeguard public and the Work. 2. Provide as necessary to prevent unauthorized entry to construction areas and affected roads, streets, and alleyways, inside and outside of fenced area, and as required to ensure public safety and the safety of Contractor’s employees, other employer’s employees, and others who may be affected by the Work. 3. Provide to protect existing facilities and adjacent properties from potential damage. 4. Locate to enable access by facility operators and property owners. 5. Protect streets, roads, highways, and other public thoroughfares that are closed to traffic by effective barricades with acceptable warning signs. 6. Locate barricades at the nearest intersecting public thoroughfare on each side of the blocked section. 7. Illuminate barricades and obstructions with warning lights from sunset to sunrise. D. Trees and Plantings: 1. Protect from damage and preserve trees, shrubs, and other plants outside limits of the Work and within limits of the Work, which are designated on the Drawings to remain undisturbed. E. Existing Structures: 1. Where Contractor contemplates removal of small structures such as mailboxes, signposts, and culverts that interfere with Contractor’s operations, obtain approval of property owner and Engineer. 2. Move mailboxes to temporary locations accessible to postal service. 3. Replace items removed in their original location and a condition equal to or better than original. F. Finished Construction: Protect finished floors and concrete floors exposed as well as those covered with composition tile or other applied surfacing. G. Waterways: Keep ditches, culverts, and natural drainages continuously free of construction materials and debris. H. Dewatering: Construct, maintain, and operate cofferdams, channels, flume drains, sumps, pumps, or other temporary diversion and protection works. Furnish materials required, install, maintain, and operate necessary pumping and other equipment for the environmentally safe Project No. 18088080 12 Section 01 50 00 Lake Lewisville WTP Dewatering Design Temporary Facilities and Controls removal and disposal of water from the various parts of the Work. Maintain foundations and parts of the Work free from water. 3.4 TEMPORARY CONTROLS A. Air Pollution Control: 1. Minimize air pollution from construction operations. 2. Burning: Of waste materials, rubbish, or other debris will not be permitted on or adjacent to Site. 3. Conduct operations of dumping rock and of carrying rock away in trucks to cause a minimum of dust. Give unpaved streets, roads, detours, or haul roads used in construction area a dust-preventive treatment or periodically water to prevent dust. Strictly adhere to applicable environmental regulations for dust prevention. 4. Provide and maintain temporary dust-tight partitions, bulkheads, or other protective devices during construction to permit normal operation of existing facilities. Construct partitions of plywood, insulating board, plastic sheets, or similar material. Construct partitions in such a manner that dust and dirt from demolition and cutting will not enter other parts of existing building or facilities. Remove temporary partitions as soon as need no longer exists. B. Noise Control: 1. Noise Control Plan: Propose plan to mitigate construction noise and to comply with noise control ordinances, including method of construction, equipment to be used, and acoustical treatments. C. Water Pollution Control: 1. Divert sanitary sewage and non-storm waste flow interfering with construction and requiring diversion to sanitary sewers. Do not cause or permit action to occur which would cause an overflow to existing waterway. 2. Prior to commencing excavation and construction, obtain Engineer’s agreement with detailed plans showing procedures intended to handle and dispose of sewage, groundwater, and storm water flow, including dewatering pump discharges. 3. Comply with procedures outlined in U.S. Environmental Protection Agency manuals entitled, “Guidelines for Erosion and Sedimentation Control Planning,” “Implementation, Processes, Procedures, and Methods to Control Pollution Resulting from All Construction Activity,” and “Erosion and Sediment Control- Surface Mining in Eastern United States.” 4. Do not dispose of volatile wastes such as mineral spirits, oil, chemicals, or paint thinner in storm or sanitary drains. Disposal of wastes into streams or waterways is prohibited. Provide acceptable containers for collection and disposal of waste materials, debris, and rubbish. D. Erosion, Sediment, and Flood Control: Provide, maintain, and operate temporary facilities to control erosion and sediment releases, and to protect the Work and existing facilities from flooding during construction period. 3.5 STORAGE YARDS AND BUILDINGS A. Coordinate requirements with Section 01 60 00, PRODUCT REQUIREMENTS. B. Temporary Storage Yards: Construct temporary storage yards for storage of products that are not subject to damage by weather conditions. C. Temporary Storage Buildings: 1. Provide environmental control systems that meet recommendations of manufacturers of equipment and materials stored. Project No. 18088080 13 Section 01 50 00 Lake Lewisville WTP Dewatering Design Temporary Facilities and Controls 2. Arrange or partition to provide security of contents and ready access for inspection and inventory. 3. Store combustible materials (paints, solvents, fuels) in a well-ventilated and remote building meeting safety standards. 4. Provide, at a minimum, one temporary storage building or storage trailer to house specified spare part during the duration of construction and until spare parts are accepted by Owner and Engineer. 3.6 ACCESS ROADS A. Construct access roads as required and within easements, rights-of-way, or Project limits. Obtain Engineer’s approval of access roads. B. Maintain drainage ways. Install and maintain culverts to allow water to flow beneath access roads. Provide corrosion-resistant culvert pipe of adequate strength to resist construction loads. C. Provide gravel, crushed rock, or other stabilization material to permit access by all motor vehicles at all times. D. Maintain road grade and crown to eliminate potholes, rutting, and other irregularities that restrict access. E. Coordinate with Engineer detours and other operations affecting traffic and access. Provide at least 72 hours notice to Engineer of operations that will alter access to the Site. F. Where access road crosses existing fences, install and maintain gates. G. Upon completion of construction, restore ground surface disturbed by access road construction to original grade. Replace damaged or broken culverts with new culvert pipe of same diameter and material. 3.7 PARKING AREAS A. Control vehicular parking to preclude interference with public traffic or parking, access by emergency vehicles, Owner’s operations, or construction operations. B. Provide parking facilities for personnel working on the Project. No employee or equipment parking will be permitted on Owner’s existing parking areas, except as specifically designated for Contractor’s use. 3.8 VEHICULAR TRAFFIC A. Comply with Laws and Regulations regarding closing or restricting use of public streets or highways. No public or private road shall be closed, except by written permission of proper authority. Assure the least possible obstruction to traffic and normal commercial pursuits. B. Conduct the Work to interfere as little as possible with public travel, whether vehicular or pedestrian. C. Whenever it is necessary to cross, close, or obstruct roads, driveways, and walks, whether public or private, provide and maintain suitable and safe bridges, detours, or other temporary expedients for accommodation of public and private travel. D. Coordinate traffic routing with that of others working in same or adjacent areas. Project No. 18088080 14 Section 01 50 00 Lake Lewisville WTP Dewatering Design Temporary Facilities and Controls 3.9 CLEANING DURING CONSTRUCTION A. In accordance with General Conditions, as may be specified in other Specification sections, and as required herein. B. Wet down exterior surfaces prior to sweeping to prevent blowing of dust and debris. At least weekly, sweep all floors (basins, tunnels, platforms, walkways, roof surfaces), and pick up all debris and dispose. C. Provide approved containers for collection and disposal of waste materials, debris, and rubbish. At least at weekly intervals, dispose of such waste materials, debris, and rubbish offsite. D. At least weekly, brush sweep entry drive and roadways, and all other streets and walkways affected by the Work and where adjacent to the Work. END OF SECTION Project No. 18088080 1 Section 26 90 40 Lake Lewisville WTP Dewatering Improvements Process Control Descriptions SECTION 26 90 40 – PROCESS CONTROL DESCRIPTIONS PART 1 - GENERAL 1.1 SUMMARY A. The control descriptions described herein are intended to convey the functionality of system equipment and processes in conjunction with the SCADA system. B. Related Sections: 1. 26 90 00 General Instrumentation and Control 2. 26 90 10 Process and Analytical Instruments 3. 26 90 20 PLC Control Panels 4. 26 90 35 PLC and HMI Programming 5. 41 12 13 Dumpster-Veyor Patented Container Handling System 6. 44 42 56.23 Vertical Turbine Pumps 7. 44 42 56.23.1 DS – Vertical Turbine Pump (Low Lift Pumps) Supplement 8. 44 42 56.29 Wet-Pit Submersible Pumps 9. 44 42 56.29.1 DS – Wet-Pit Submersible Pumps Supplement 10. 44 42 56.53 Progressive Cavity Pumps 11. 44 42 56.53.1 DS – Thickened Residuals Transfer Pumps 12. 44 44 63 Liquid Polymer Feed System 13. 44 46 26.13 Gravity Thickener Mechanisms 14. 44 46 26.13.1 DS – Gravity Thickener Mechanisms Supplement 15. 46 07 53 Plant Booster Pump Station 16. 46 21 75 Shaftless Screw Conveyors 17. 46 21 75.1 DS – Shaftless Screw Conveyors From BFPs 18. 46 21 75.1 DS – Shaftless Screw Conveyors Inclined 19. 46 21 75.1 DS – Shaftless Screw Conveyors To Bins 20. 46 76 21 Belt Filter Press System 1.2 REFERENCES A. Definitions: Symbols, Definitions, and Abbreviations: All symbols, definitions, and engineering unit abbreviations utilized shall conform to IEEE 100-84, S50.1, and S51.1, where applicable. 1. SCADA – Supervisory Control and Data Acquisition 2. HMI – Human Machine Interface 3. HOA – Hand/Off/Auto 4. OIT – Operator Interface Terminal 5. PLC – Programmable Logic Controller 6. I/O – Input/Output 7. VFD – Variable Frequency Drive 8. SSRVS – Solid State Reduced Voltage Starter (“Soft Starter”) 9. RTU – Remote Telemetry Unit 10. MTU – Master Telemetry Unit 11. MCC – Motor Control Center 12. Operating Program – Operating system, SCADA or other core software 13. Integrated Operating Platform – System of installed, connected, and configured hardware, operating programs, and networking equipment 14. PLC and HMI Programming – Software configuration of operating programs to implement plant control strategies Project No. 18088080 2 Section 26 90 40 Lake Lewisville WTP Dewatering Improvements Process Control Descriptions PART 2 - PRODUCTS (NOT USED) PART 3 - EXECUTION 3.1 FUNCTIONAL CONTROL DESCRIPTION The following control descriptions provide basic functionality for the system equipment and processes. This description shall be used as a guide for controlling various items by location and is expected to be continually refined throughout the execution of the project. The descriptions are not intended to identify every status or alarm indication required on the plant SCADA HMI. Refer to contract drawings and related specification sections for additional requirements. Automated operations require a successful permissive check in order to begin operation. If manual operation is selected, permissive requirements are no longer required for operation of the equipment system. Under manual conditions, hardwired faults for pumps, valves, belt filter presses, booster pump system, polymer feed system, screw conveyor system, and the dumpster- veyor system should be taken into account before operating the system. A. Facility 68 – Washwater Equalization Basin 1. General Information a. The primary functionality of the washwater equalization basin pumps is to pump flows from the flocculation/sedimentation basins and filter backwash to the gravity thickener. Drawing 08-I681 details the process and instrumentation diagram, and highlights the process control components. b. The washwater equalization basin consists of a concrete-formed basin with four (4) submersible centrifugal pumps, two (2) existing and two (2) new, with associated piping and valve vaults. c. An existing ultrasonic level transmitter is installed that transmits WWEQ basin level to the existing SCADA system for monitoring. No changes to SCADA functionality are expected. d. The existing pumps operate automatically with the use of existing float switches. No changes to the operation of the existing pumps is expected. e. The new submersible pumps are controlled by local control panel 68EQCP02 for local automatic and manual control. The local panel includes HAND/OFF/AUTO (HOA) modes of operation for each pump. f. Five new float switches will be installed in the basin for control of the new pumps in a duty/standby mode of control. 2. Local Manual Control: The pumps will be turned on locally at the local control panels by placing the HOA selector switch to the HAND position. 3. Local Automatic Control: The pumps will be controlled in automatic by placing the HOA selector switch in the AUTO position. The pumps will alternate in a duty/standby mode of operational based on the installed float switches. a. The operator will set the desired pump on level and pump off level setpoints. When the pump on level is reached, the control system will run the pump until the water level in the washwater equalization basin pump off setpoint. The engineer recommends the following setpoints: 1) Low level shutoff elevation – 618.00 feet 2) Pump off elevation – 620.00 feet 3) Duty pump on – 624.00 feet 4) High level alarm – 626.00 feet b. The operator will have the ability to assign Duty/Standby status for the pumps. The Duty/Standby status of the pumps will be rotated between each cycle. 4. Refer to specification Section 44 42 56.29 Wet-Pit Submersible Pumps for additional control system requirements and description. B. Facility 69 – Washwater Recovery Basin Project No. 18088080 3 Section 26 90 40 Lake Lewisville WTP Dewatering Improvements Process Control Descriptions 1. General Information a. The primary functionality of the washwater recovery basin pumps is to pump decanted flow from the gravity thickener and belt filter press filtrate to the rapid mix process. Drawing 08-I691 details the process and instrumentation diagram, and highlights the process control components. b. The washwater recovery basin consists of a concrete formed basin with two (2) new vertical turbine pumps with associated piping. c. New vertical turbine pumps are controlled by a local control panel (69VTCP01) interfaced to PLC-BB via hardwired signals for automatic remote control. The local control panel will include HAND/OFF/AUTO (HOA) modes of operation for each pump. d. The pumps will operate on an ON/OFF basis. e. Control of the pumps will be implemented with programming of PLC-BB and configuration of the SCADA system. f. A new low-level-float switch (69LSLL01) and high-level-float switch (69LSHH02) will be installed in the basin. g. An existing ultrasonic level transmitter is installed that transmits WWRB basin level to the existing SCADA system for monitoring and control. No changes to SCADA functionality are expected. h. Under normal operating conditions, pumping will be automatically initiated by the SCADA system using feedback from the ultrasonic level transmitter. 2. Local Control: The pumps will have the ability to be turned on manually at the local control panel by placing the HOA selector switch to the HAND position. 3. Automatic Control: The new pumps will be controlled automatically or manually from the SCADA system. With the HOA selector switch in the AUTO position, each pump will have an operator adjustable MANUAL-AUTO selector on the HMI. a. MANUAL Mode: 1) When MANUAL is selected, each pump will be stopped and started with START-STOP buttons on the HMI. b. AUTO Mode: 1) The operator will set the desired pump on level and pump off level setpoints from the SCADA system. When the pump on level is reached, the control system will run the pump until the water level in the washwater recovery basin reaches the low-level setpoint. 2) The operator will have the ability to assign Duty/Standby status for the pumps. The Duty/Standby status of the pumps will be rotated between each cycle. 4. Refer to specification Section 44 42 56.23 Vertical Turbine Pumps for additional control system requirements and description. C. Facility 70 - Gravity Thickener 1. The primary functionality of the gravity thickener is to: a. Receive flow from the washwater equalization basin. b. Settle out solids in the water to be sent to the thickened residuals pump station c. Decant settled water to the washwater recovery basin. 2. The gravity thickener will be controlled via individual vendor supplied local control panel, 70TCP01, interfaced to 77PLC01 via hardwired signals for automatic remote control with HAND/OFF/AUTO (HOA) modes of operation. 3. Local Control: The thickener motor will run when the HOA switch is placed in the HAND position. 4. Remote Control: The thickener drive motor will be controlled from the plant SCADA HMI START/STOP buttons when the local HOA switch is in the AUTO position. 5. Status and alarm indications will be provided on the plant SCADA HMI. 6. The primary process control of the gravity thickener after the influent and effluent flows are balanced is the residuals blanket level. The residuals blanket level will be a function of the influent flow solids loading rate. The process objectives are to maximize the thickened Project No. 18088080 4 Section 26 90 40 Lake Lewisville WTP Dewatering Improvements Process Control Descriptions residuals underflow concentration while maintaining the residuals blanket depth at an acceptable level. 7. Residuals withdrawal will be controlled via the metered pumping rates by the thickened residuals pumps. 8. Refer to specification Section 44 46 26.13 Gravity Thickener Mechanisms for specific control system requirements and description. 9. Drawing 08-I701 details the process and instrumentation diagram and highlights the process control components. D. Facilities 75 and 77 – Thickened Residuals Pump Station and Dewatering Systems 1. General Information a. The complete dewatering system consists of three (3) new progressive cavity thickened residuals pumps, electrically actuated control valves, two (2) thickened residuals flowmeters, two (2) polymer feed systems, two (2) belt filter presses, discharge screw conveyors, dumpster-veyor system, and water booster pump skid. b. The system is designed such that both belt filter presses are capable of operating simultaneously. c. In normal automatic operation, the thickened residual pumps will pump thickened residuals to the belt filter press(es) at an operator-adjustable flow rate setpoint. d. Automatic control of the belt filter press feed system will be implemented with programming of 77PLC01 and the SCADA system. e. Automatic control of the belt filter presses will be implemented as part of the belt press control panels provided by the manufacturer, and programming of 77PLC01 and the SCADA system. f. Automatic control of the discharge conveyor system will be implemented as part of the control panel provided by the conveyor manufacturer, and programming of 77PLC01 and the SCADA system. g. The SCADA system will be configured to provide the operator with the ability to remotely start and stop the dewatering unit processes from the SCADA screens. h. The system is designed such that multiple pair combinations of thickened residual pump and belt filter press can be operated together. The operator will select which pump to associate with which belt filter press from the SCADA HMI screens. Based on this selection, and with control valves in AUTO on the SCADA HMI, the control valves will automatically actuate on/off to enable the correct pumping path. By default, pump 1 will pump to belt press 1 and pump 2 will pump to belt press 2. See table below. Pump and BFP Pair Combinations Pump to BFP Valves Open Valves Closed 1 to 1 75CV01, 75CV04 75CV07 2 75CV01, 75CV06, 75CV07, 75CV08 75CV02, 75CV05, 75CV04 3 75CV01, 75CV05, 75CV06, 75CV07, 75CV09, 75CV11 75CV02, 75CV03, 75CV04, 75CV08, 75CV10 2 to 1 75CV02, 75CV04, 75CV07 75CV01, 75CV06 2 75CV02, 75CV06, 75CV08 75CV05, 75CV07 3 75CV02, 75CV05, 75CV06, 75CV09, 75CV11 75CV03, 75CV07, 75CV08, 75CV10 3 to 1 75CV03, 75CV04, 75CV05, 75CV06, 75CV07 75CV01, 75CV02, 75CV08, 75CV09 2 75CV03, 75CV05, 75CV08 75CV06, 75CV09 3 75CV03, 75CV09, 75CV11 75CV05, 75CV10 Project No. 18088080 5 Section 26 90 40 Lake Lewisville WTP Dewatering Improvements Process Control Descriptions 4 to 1 75CV04, 75CV05, 75CV06, 75CV07, 75CV09, 75CV10 75CV01, 75CV02, 75CV03, 75CV08, 75CV11 2 75CV05, 75CV08, 75CV09, 75CV10 75CV03, 75CV06, 75CV11 3 75CV10, 75CV11 75CV09 1) Changes to pump/belt press association can only be made when the systems are stopped. 2) The operator will maintain the ability to override a programmed scenario and assign valve status when required by placing the valve in MANUAL from the SCADA HMI. 3) Display a warning when manual inputs for valve status change resulting in a conflict with a programmed scenario operation. 4) When operating multiple pumps and BFPs, display a warning when equipment inputs have conflicting valve statuses. Current selections have priority when assigning an additional pump/BFP pair. 2. Thickened Residuals Pumps a. The thickened residuals pump (TRP) station consists of three (3) new progressive cavity pumps for residuals pumping with one (1) future installation. The pumps draw from the gravity thickener and pump the residuals through a piping network to feed the dewatering equipment. b. The new pumps will be controlled by VFD pump control panels 75PCP01-75PCP03, and integrated with SCADA through 77PLC01. The VFD control panels will include HAND-OFF-REMOTE selector switches for selection of local or remote control. c. The SCADA system will provide monitoring of key status and alarm indicators for the thickened residuals pumping system such as running, speed indication, and faults. d. For remote control from SCADA, each pump will have an operator adjustable MANUAL-AUTO selector on the HMI. a) When MANUAL is selected, each pump will be stopped and started with START and STOP buttons on the HMI. Pump speed will be set with an operator adjustable manual speed set-point on the HMI. e. When AUTO is selected, the pump will be started according to the status of a “start belt press feed” command from the associated belt press. Pump speeds will be modulated to maintain a flow rate at the operator adjustable flow rate set-point. f. The VFD speed operating ranges will be based on the following: 1) The minimum speed recommended by the VFD manufacturer. 2) The minimum motor speed to cool the motor as recommended by the pump manufacturer. 3) The minimum motor speed for minimum pump flow rate as recommended by the pump manufacturer. 4) The minimum speed for the pump to begin pumping as determined in the field by operating the pumps. 5) The maximum speed for the pump to prevent the pump from running off its curve 6) Changes in operational speed will be governed by a maximum ramp up/down time as determined in the field to prevent system shocks. g. Permissive for operation: 1) No internal faults 2) BFP normal status which includes wash water pressure and no faults on control panel 3) No valve faults from selected TRP to selected BFP Project No. 18088080 6 Section 26 90 40 Lake Lewisville WTP Dewatering Improvements Process Control Descriptions 4) Polymer feed with normal status, coordinated in SCADA to which BFP is receiving the feed 5) Booster pump system with normal status, coordinated in SCADA to which BRP is receiving pressurized flow 6) Gravity thickener with normal status h. Refer to specification Section 44 42 56.53 Progressive Cavity Pumps for additional information. 3. Belt Filter Presses a. The primary function of the belt filter press (BFP) is to increase the solids concentration of the thickened residuals flow by applying pressure to filter out water. The solids discharge to a screw conveyor system that brings the residuals to the dumpster-veyor system for disposal. The effluent from the BFPs flows back to the washwater EQ basin. b. The BFP system will be controlled by a manufacturer supplied control panel (77BPPLC1 and 77BPPLC2) that is integrated with the plant SCADA HMI. Refer to specification Section 46 76 21 Belt Filter Press System for control descriptions and details. c. The BFP system will be integrated with the thickened residual pumps, polymer feed system, booster pump system, screw conveyor system, and dumpster-veyor system. d. The operator will start a BFP through a start button on the SCADA HMI or through a start button on the belt press control panel HMI. The BFP will begin an automated startup process and provide signals to 77PLC01 for starting the thickened residual pump, the polymer system, and discharge screw conveyors. e. Permissive for operation: 1) No internal faults 2) 77PLC01 will provide a “system ready” indication to the BFP when the following conditions are met: a) Clear path with no valve faults to BFP from the assigned TRP b) Available dumpster volume with feedback from the dumpster-veyor system c) Functioning gates with a path to available dumpster volume d) Conveyors with normal status, which includes a check on each conveyor as running within a set timeframe not to exceed 10 seconds and to be coordinated with equipment manufacturer, speed sensor, and conveyor control panels e) Booster pump system with normal status f. The SCADA system HMI shall display key status and alarm indicators for the belt filter press system. g. Drawing 08-I771 details the process and instrumentation diagrams and highlights the process control components. 4. Screw Conveyors a. The primary function of the screw conveyor system is to transport thickened residuals from the BFPs to the dumpster-veyor system for disposal. b. The screw conveyor system will be controlled by a main manufacturer supplied control panel (77SCCP01) that is integrated with the plant SCADA HMI. A secondary control panel (77SCCP02) will control the conveyor to the bins and the associated gate. The screw conveyor control panel will receive run signals from 77PLC01 when all permissives have been met and the BFP has initiated a conveyor run command. Refer to specification Section 46 21 75 Shaftless Screw Conveyors for control descriptions and details. c. Permissive for operation: 1) No internal faults 2) Available dumpster volume with feedback from the dumpster-veyor system Project No. 18088080 7 Section 26 90 40 Lake Lewisville WTP Dewatering Improvements Process Control Descriptions 3) Functioning gates to an available dumpster-veyor system. 4) Successful check of outside bin conveyor (77SC03) operation for a minimum of 10 seconds. 5) Successful check of incline conveyor (77SC02) operation for a minimum of 10 seconds. 6) Successful check of BFP conveyor (77SC01) operation for a minimum of 10 seconds. 7) BFPs with normal status d. The screw conveyors will begin operation starting with the outside bin conveyor, then the inclined conveyor, and finishing with the BFP conveyor. e. The conveyor control panel will receive open/close commands for the gate based on the availability of the dumpsters controlled by the dumpster-veyor system. f. The SCADA system will display key status and alarm indicators for the screw conveyor system including start/stop, running, and fault. 5. Dumpster-Veyor System a. The primary function of the dumpster-veyor system is to collect the residuals from the screw conveyors for disposal. Dewatering facility operations require available dumpster volume, which will be integrated within upstream processes/permissive details. b. The dumpster-veyor system will be controlled by a manufacturer provided local control panel (77DCP01 and 77DCP02) that is integrated into the plant SCADA HMI. c. Permissive for operation: 1) No internal faults 2) Dumpster in place 3) Available dumpster volume 4) Screw conveyor system with normal status d. Dumpster volume availability is determined by a sensing tree located on the sides of the conveyor platforms. As thickened residuals drop into the dumpster, the sensing tree will monitor the height of the residuals using a laser positioned above the dumpster. When the height of the residuals reaches a defined maximum level and impedes the laser, positioning devices will move the dumpster down the guide rails at a defined distance, clearing the interruption and continuing the process. Operations will repeat until the dumpster position has reached its maximum traveling distance, indicating no available volume for that dumpster. Flow will be diverted to the second dumpster by changing the position of the conveyor #3 gate. If both dumpsters have reached their maximum capacity, the dewatering facility will shut off by first shutting down the feed pumps and polymer system, clearing conveyors, and entering standby status. 1) Dumpster positioning will be reset manually after a new dumpster has been positioned in place properly. 2) Dumpster is unavailable if no dumpster is in place. e. From the SCADA HMI, operators will have the ability to select a preferred dumpster to fill (when both dumpster have available volume). 1) If manual operations interfere with permissive details, show a warning in the HMI or OIT. f. The SCADA system will display key status and alarm indicators for the dumpster- veyor system such as start/stop, forward/reverse operation, and fault. 6. Plant Water Booster Pump System: a. The primary function of the plant water booster pump station is to add pressure to the flow of water being received by the BFPs or hose bibs. b. The plant water booster pump station will be controlled by a manufacturer supplied control panel and interface to the dewatering PLC control panel (77PLC01). Refer to specification Section 46 07 53 Plant Booster Pump Station for additional information. Project No. 18088080 8 Section 26 90 40 Lake Lewisville WTP Dewatering Improvements Process Control Descriptions c. Operators will set a target system pressure and an acceptable range for fluctuation. The booster pump station will automatically turn on or off to maintain the target pressure selection. d. Permissive for operation: 1) No internal faults e. The SCADA system will display key status and alarm indicators for the plant water booster pump station such as on/off and fault. f. Drawing 08-I772 details the process and instrumentation diagrams and highlights the process control components. 7. Polymer Feed System a. The primary function of the polymer feed system is to mix neat liquid polymer with makedown water to feed the BFPs during operation. The addition of polymer to the thickened residuals aids in filtering out water to increase the solids concentration before disposal. b. The polymer feed system is controlled by local polymer system controllers and hard- wired interface to 77PLC01. c. The polymer feed system will provide a polymer solution to the belt filter presses using a flow pacing signal from the thickened residual flow meters. d. The polymer totes will be installed on weight scales for monitoring the polymer usage from SCADA. e. Permissive for operation: 1) No internal faults 2) Available polymer volume in storage totes selected as the feed for the system 3) TRP and BFP systems with normal status f. The polymer system will start automatically based on the TRP and BFP running status. g. The SCADA HMI shall provide the ability for the operator to select which BFP each polymer system is connected to. The valves along the path between the polymer system and BFP will be manually adjusted. The system will automatically provide the appropriate flow pace signal to the polymer controller based on the operator selection. Physical connection of the polymer system piping to the correct BFP based on the operator SCADA selection will be a manual operation. h. The SCADA system will display key status and alarm indicators for the polymer feed system such as start/stop, flow pace, and pressure. i. Refer to specification Section 44 44 63 Liquid Polymer Feed System for control descriptions. Drawing 08-I773 shows the process and instrumentation diagrams and highlights for process control components. END OF SECTION Project No. 18088080 1 of 1 40 23 39 Supplement Lake Lewisville WTP Dewatering Improvements Process Piping Schedule Notes: 1 Encased – All buried piping under concrete slabs 4 H - Hydrostatic Test and/or structures shall be concrete encased per P - Pneumatic Test standard detail D40/2400-009 unless indicated G - Gravity Piping otherwise on the Drawings. See Section 33 11 11 for Piping Leakage Testing requirements, for systems specified in Division 33 Exposed – Inside/Outside AM – Air Method Submerged – Below Liquid Surface HH – High Head Buried – Directly into Soil LH – Low Head 2 > Greater Than LP – Low-Pressure Pneumatic Test < Less Than See Section 40 05 00 for Piping Leaking Testing requirements for systems specified in Division 40. <= Less Than or Equal To Pipe testing required as specified above. >= Greater Than or Equal To 5 See Section 09 90 00 for required painting. 3 BS – Black Steel For buried piping, no color shall be required; coordinate for proper coatings, as necessary. CLDI – Cement Lined Ductile Iron Where no color is indicated, color to be selected by Owner. CPVC - Chlorinated Polyvinyl Chloride For exposed piping not coated, provide colored banding and identification. CU – Copper 6 General - Deviations from this schedule are indicated directly by note on Drawings where DWV – Drain Waste Vent deviation is required. HDPE – High Density Polyethylene 7 General – The piping material shall conform to the requirements for the service listed being SST - Stainless Steel drained or vented. FL PVC – Flanged Polyvinyl Chloride Pipe 8 EPP – Epoxy and Polyurethane Coating System PO PVC – Push on Joint Polyvinyl Chloride Pipe HSE – High Solids Epoxy SW PVC – Solvent Weld Polyvinyl Chloride Pipe CTP – Coal Tar Pitch HT – High Temperature Remarks: 1 Where buried piping transitions to exposed PVC piping, the buried piping shall be extended at least six (6) inches above the finished floor before transitioning to exposed PVC piping. 2 Natural gas piping shall be tested in accordance with Section 406 of the International Fuel Gas Code. 3 SW PVC or FL PVC, FL PVC where shown 4 Heat trace and insulate all outside piping PROCESS PIPING SCHEDULE Service Flow Stream Identifier Installation (Note 1) Nominal Diameter (Note 2) Material (Note 3) Coating (Note 8) Spec / Data Sheet No. Max Operating Temp (°F) Max Operating Pressure (psig) Test Pressure (psig) & Method (Note 4) Pipe Color (Note 5) Remarks Backwash Waste/Settled Water Waste BWW/SWW Exposed – Outside Buried Buried All <16” ≥16” CLDI CLDI C900/905 PVC HSE - - 40 23 39.13 40 23 39.13 40 23 39.40 Ambient 25 50, H 4 Gravity Filtered Water GFW Buried All SDR 26 PVC - 40 23 39.43 Ambient Gravity Flow 4,G Cationic Polymer PO Exposed – Inside All CPVC - 40 23 39.46 Ambient 50 100, HH Liquid Polymer POL Exposed - Inside All CPVC - 40 23 39.46 Ambient 50 100, HH Plant/Process Drain PD Sump Pump Discharge All PVC - 40 23 39.43 Ambient Gravity Flow 4, G Plant/Process Drain PD Buried Encased Exposed - Outside All All All SDR 26 PVC DWV CLDI - - 40 23 39.43 40 23 39.42 40 23 39.13 Ambient Gravity Flow Gravity Flow 20 4, G 4, G 40, H Thickened Residuals TR Buried/Encased Exposed – Outside Exposed – Inside All CLDI CLDI CLDI - - - 40 23 39.13 40 23 39.13 40 23 39.13 Ambient 20 40, H 4 Water, Potable W, W1 Exposed – Inside Buried Buried All ≥4” <4” CPVC C900/905 PVC CU - 40 23 39.46 40 23 39.40 40 23 39.53 150 Ambient Ambient 100 200, H Purple - - Water, Non-Potable NPW, W2 Buried Exposed – Inside Exposed - Inside All ≥4” <4” C900/905 PVC CLDI PVC - - 40 23 39.40 40 23 39.13 40 23 39.43 Ambient 80 120 120 160. HH 240, HH 240, HH Project No. 18088080 1 Section 44 42 56.29 Lake Lewisville WTP Dewatering Improvements Wet-Pit Submersible Pumps SECTION 44 42 56.29 – WET-PIT SUBMERSIBLE PUMPS PART 1 - GENERAL 1.1 SUMMARY A. Section includes: All work necessary to furnish, install and place into operation the electrical submersible pump(s) required to complete this project. This section includes electric submersible pump(s) to be supplied with motor, close coupled volute, cast iron discharge elbow, guide bar brackets, power cable and accessories as specified herein, and as further specified in the Submersible Pump Data Sheets hereinafter. B. Related sections: 1. Section 01 33 00 – Submittal Procedures. 2. Section 01 60 00 – Product Requirements. 3. Section 01 78 23 – Operation and Maintenance Data. 4. Section 01 79 00 – Demonstration and Training. 5. Section 09 90 00 – Painting and Protective Coatings. 6. Section 26 90 00 – General Instrumentation and Controls. 7. Section 26 90 10 – Process and Analytical Instruments. 8. Section 41 22 17 – Davit Cranes. 1.2 GENERAL A. Like items of equipment provided hereunder shall be the end products of one Manufacturer in order to achieve standardization for appearance, operation, maintenance, spare parts, and Manufacturer’s service. B. Unit Responsibility: The Work requires the Submersible Pumps complete with all accessories and appurtenances (including, but not necessarily limited to, pump, motor, base elbow, guiderails, guiderail mount accessories, lift chains or cables, spare parts, start-up, testing, and personnel training) be the end product of one responsible Manufacturer. Unless otherwise indicated, the Contractor shall obtain each system from the Manufacturer of the equipment. Manufacturer shall provide all components of the system to enhance compatibility, ease of construction, and efficient operation and maintenance, and as necessary to place the equipment in operation and its intended functions without altering or modifying the Contractor's responsibilities under the Contract Documents. The Contractor is responsible to the Owner for performance of all equipment systems as indicated. 1.3 SUBMITTALS A. Submittals shall be made as required in Section 01 33 00, SUBMITTAL PROCEDURES. The following specific information shall be provided: 1. Shop Drawings: Shop drawings shall include descriptive information as required to fully describe the Pumps, Controls, Motors, and overall performance and shall identify any deviations from the specified requirements. 2. For pumps equipped with variable frequency drives. Provide a VFD analysis showing single pump operation, and parallel pump operation at increments not greater than 5 Hz between 35 Hz and 60 Hz or the minimum safe operating frequency, whichever is greater. Each increment shall include flow, head, and pump efficiency. 3. Special handling instructions, in accordance with Section 01 60 00, PRODUCT REQUIREMENTS. 4. Requirements for storage and protection prior to installation, in accordance with Section 01 60 00, PRODUCT REQUIREMENTS. Project No. 18088080 2 Section 44 42 56.29 Lake Lewisville WTP Dewatering Improvements Wet-Pit Submersible Pumps 5. Requirements for routine maintenance required prior to plant startup, in accordance with Section 01 60 00, PRODUCT REQUIREMENTS. 6. List of all requested exceptions to the Contract Documents. 7. Motor information to be submitted in accordance with Division 26, ELECTRICAL. 8. Quality control submittals as listed in Section 01 33 00, SUBMITTAL PROCEDURES. 9. Instrumentation and control submittals as listed in Section 26 90 00, GENERAL INSTRUMENTATION AND CONTROLS. 10. Factory Test Reports (Balance & Vibration). 1.4 OPERATION AND MAINTENANCE DATA A. O&M Manuals: Content, format, and schedule for providing as specified in Section 01 78 23, OPERATION AND MAINTENANCE DATA. B. Maintenance Summary Forms: As specified in Section 01 78 23, OPERATION AND MAINTENANCE DATA. 1.5 WARRANTY A. Provide warranty for a period of 24 months after the final acceptance of the equipment by the Owner and Engineer. The warranty shall stipulate that the equipment furnished is suitable for the purpose intended and free from defects of material and workmanship for the duration of the warranty. In the event the equipment fails to perform as specified, the Manufacturer will promptly repair or replace the defective equipment without additional cost to the Owner. B. Spare parts identified within this specification shall not be used to address warranty repairs. PART 2 - PRODUCTS 2.1 GENERAL REQUIREMENTS A. Furnish and install submersible non-clog wastewater pump(s). Each pump shall be equipped with a submersible electric motor, connected for operation on 460 volts, 3 phase, 60 hertz, with 70 feet of submersible cable (SUBCAB) suitable for submersible pump applications. The power cable shall be sized according to NEC and ICEA standards and also meet with P-MSHA Approval. See supplement data sheets for specific pump information. B. The use of a Manufacturer’s name and model or catalog number is for the purpose of establishing the standard of quality and general configuration, but modifications shall be made to ensure all requirements specified herein are met. Specific pump models are suggested and other models meeting the service and duty requirements will be considered. 2.2 MANUFACTURERS A. Where a manufacturer's standard equipment name and/or model number is listed, the equipment system shall be provided and modified as required to conform to the performance, functions, features, and materials of construction as specified herein. B. Materials, equipment, components, and accessories specified in this section shall be, products of: 1. Xylem Flygt 2. KSB 3. Or Engineer Approved Equal Project No. 18088080 3 Section 44 42 56.29 Lake Lewisville WTP Dewatering Improvements Wet-Pit Submersible Pumps 2.3 PUMP A. GENERAL 1. The pump shall be supplied with a mating cast iron discharge connection and be capable of delivering flow as specified in supplement data sheet(s). The pump(s) shall be automatically and firmly connected to the discharge connection, guided by no less than two guide bars extending from the top of the station to the discharge connection. There shall be no need for personnel to enter the wet-well. Sealing of the pumping unit to the discharge connection shall be accomplished by a machined metal to metal watertight contact. Sealing of the discharge interface with a diaphragm, O-ring or profile gasket will not be acceptable. No portion of the pump shall bear directly on the sump floor. Each pump shall be fitted with 25 feet of stainless steel lifting chain. The working load of the lifting system shall be 50% greater than the pump unit weight. 2. Major pump components shall be of grey cast iron, ASTM A48, Class 35B, with smooth surfaces devoid of blow holes or other irregularities. The lifting handle shall be of stainless steel. All exposed nuts or bolts shall be of stainless steel construction. All metal surfaces coming into contact with the fluid, other than stainless steel or brass, shall be protected by a factory applied spray coating of acrylic dispersion zinc phosphate primer with a polyester resin paint finish on the exterior of the pump. 3. Sealing design shall incorporate metal-to-metal contact between machined surfaces. Critical mating surfaces where watertight sealing is required shall be machined and fitted with Nitrile rubber O-rings. Fittings will be the result of controlled compression of rubber O- rings in two planes and O-ring contact of four sides without the requirement of a specific torque limit. 4. Rectangular cross sectioned gaskets requiring specific torque limits to achieve compression shall not be considered as adequate or equal. No secondary sealing compounds, elliptical O-rings, grease or other devices shall be used. B. PUMP SHAFT 1. The pump and motor shaft shall be a single piece unit. The pump shaft is an extension of the motor shaft. Shafts using mechanical couplings shall not be acceptable. The shaft shall be 420 or 431 stainless steel. Shaft sleeves will not be acceptable. C. IMPELLER 1. The impeller shall be of ASTM A48, Class 35B gray iron or ASTM A532 Type II or III abrasion resistant cast iron as specified in supplemental data sheet. Impeller shall be dynamically balanced, semi-open or closed, multi-vane, non-clog design. The leading edges of the gray iron impeller shall be hardened to Rc 45 and shall be capable of handling solids, fibrous materials, heavy residuals and other matter normally found in wastewater. D. VOLUTE / SUCTION COVER 1. The pump volute shall be a single piece gray cast iron, ASTM A48, Class 35B, non- concentric design with smooth passages of sufficient size to pass any solids that may enter the impeller. The volute shall have a replaceable wear ring cast of ASTM A48, Class 35B gray iron or ASTM A-532 Type II or III abrasion resistant cast iron and provide effective sealing between the impeller and the volute housing. 2.4 BEARINGS A. The integral pump/motor shaft shall rotate on two bearings. The motor bearings shall be sealed and permanently grease lubricated with high temperature grease. The upper motor bearing shall be a two row angular contact ball bearing. The lower bearing shall be a two row angular contact ball bearing to handle the thrust and radial forces. The minimum L10 bearing life shall be 50,000 hours at any usable portion of the pump curve. Project No. 18088080 4 Section 44 42 56.29 Lake Lewisville WTP Dewatering Improvements Wet-Pit Submersible Pumps 2.5 MECHANICAL SEALS A. Each pump shall be provided with a positively driven dual, tandem mechanical shaft seal system consisting of two seal sets, each having an independent spring. The rotating seal ring shall have small back-swept grooves laser inscribed upon its face to act as a pump as it rotates, returning any fluid that should enter the dry motor chamber back into the lubricant chamber. All seal rings shall be individual solid sintered rings. Each seal interface shall be held in place by its own spring system. The seals shall not depend upon direction of rotation for sealing. Mounting of the lower seal on the impeller hub is not acceptable. Shaft seals without positively driven rotating members or conventional double mechanical seals containing either a common single or double spring acting between the upper and lower seal faces are not acceptable. The seal springs shall be isolated from the pumped media to prevent materials from packing around them, limiting their performance. B. Each pump shall be provided with a lubricant chamber for the shaft sealing system. The lubricant chamber shall be designed to prevent overfilling and shall provide capacity for lubricant expansion. The seal lubricant chamber shall have one drain and one inspection plug that are accessible from the exterior of the motor unit. The seal system shall not rely upon the pumped media for lubrication. C. The area about the exterior of the lower mechanical seal in the cast iron housing shall have cast in an integral concentric spiral groove. This groove shall protect the seals by causing abrasive particulate entering the seal cavity to be forced out away from the seal due to centrifugal action. D. A separate seal leakage chamber shall be provided so that any leakage that may occur past the upper, secondary mechanical seal will be captured prior to entry into the motor stator housing. Such seal leakage shall not contaminate the motor lower bearing. The leakage chamber shall be equipped with a float type switch that will signal if the chamber should reach 50% capacity. 2.6 ACCESSORIES A. Discharge Base and Elbow 1. Materials: Same as pump casing. 2. Features: a. Structurally capable of firmly supporting guide rails, discharge piping and pumping unit under operating conditions. b. One or more integral support legs or pads with provisions for bolting to sump floor. c. Incorporates 90 degree flanged elbow that receives horizontal flow from pump and discharges flow vertically. 3. Discharge Interface: a. Sealing of the pumping unit to the discharge connection shall be accomplished by a machined metal to metal watertight contact. b. Self-aligning without having to enter the wet well. c. Discharge elbow to mate to pump discharge and transition to discharge piping. B. Guide rails, brackets, fasteners, and lifting chain for each pump 1. Material: Type 316 stainless steel, with the following features: a. Dual pipes or dual rails that extend from discharge base to upper bracket unless scheduled otherwise. b. Rail wall thickness sufficient to suspend pump unit between brackets plus minimum 50 percent safety factor. c. Sized to fit discharge base and sliding bracket of pump. d. Integral, self-aligning, guide rail sliding brackets that seal pump to discharge base under operating conditions. e. Upper guide rail bracket. Project No. 18088080 5 Section 44 42 56.29 Lake Lewisville WTP Dewatering Improvements Wet-Pit Submersible Pumps f. Intermediate guide rail brackets where indicated on the Drawings or at 10-foot maximum intervals. g. Lifting chain of sufficient strength and length to permit safe removal of pump unit from sump. h. For setting greater than 15 feet, provide double harness rings in chain or cable every 15 feet and a hook to support pump and chain from concrete wall at ground surface. 2.7 PAINTING AND COATING A. Shop prime and field finish paint ferrous metal in accordance with and as specified in Section 09 90 00 PAINTING AND PROTECTIVE COATINGS. B. Exposed metal surfaces of motors, gear reducers, and drive assemblies shall be factory prepared and primed and field finish coated in accordance with Section 09 90 00 PAINTING AND PROTECTIVE COATINGS Division 09, FINISHES. 2.8 PUMP ACCESSORIES A. Equipment Identification Plate: A 16-gauge stainless steel identification plate shall be securely mounted on each pump in a readily visible location. The plate shall bear the 1/4” die-stamped equipment identification number name that is assigned to each pump in the Submersible Pump Data Sheets and shown on the Drawings. B. Lifting Lugs: Equipment weighing over 100 pounds shall be provided with lifting lugs. C. Painting: Provide touch-up painting for post-installation. D. See Submersible Pump Data Sheet(s) following this Section. E. Spare Parts and Special Tools: See Submersible Pump Data Sheet(s) for spare parts and special tools required for each pump or set of pumps. 2.9 MOTOR REQUIREMENTS A. Motor shall be selected in accordance with the pump’s non-overloading performance characteristics. Motor horsepower rating shall be chosen in keeping with the pump’s possible peak horsepower requirements. B. The motor shall be mounted with the pump at the pump manufacturer’s plant and shipped as one unit. C. Each pump motor shall be sufficiently cooled by submergence in the pumped media. D. The cable entry seal design shall preclude specific torque requirements to insure a watertight and submersible seal. The cable entry shall consist of dual cylindrical elastomer grommets, flanked by washers, all having a close tolerance fit against the cable outside diameter and the entry inside diameter. The grommets shall be compressed by the cable entry unit, thus providing a strain relief function. The assembly shall provide ease of changing the cable when necessary using the same entry seal. The cable entry junction chamber and motor shall be sealed from each other, which shall isolate the stator housing from foreign material gaining access through the pump top. Epoxies, silicones, or other secondary sealing systems shall not be considered equal. E. The pump motor shall be a NEMA B design, induction type with a squirrel cage rotor, shell type design, housed in an air filled, watertight chamber. The stator windings shall be insulated with moisture resistant Class H insulation rated for 180°C (356°F). The stator shall be insulated by the Project No. 18088080 6 Section 44 42 56.29 Lake Lewisville WTP Dewatering Improvements Wet-Pit Submersible Pumps trickle impregnation method using Class H monomer-free polyester resin resulting in a winding fill factor of at least 95%. The motor shall be inverter duty rated in accordance with NEMA MG1, Part 31.The stator shall be heat-shrink fitted into the cast iron stator housing. The use of multiple step dip and bake-type stator insulation process is not acceptable. The use of pins, bolts, screws or other fastening devices used to locate or hold the stator and that penetrate the stator housing are not acceptable. The motor shall be designed for continuous duty while handling pumped media of up to 104°F. The motor shall be capable of no less than 30 evenly spaced starts per hour. The rotor bars and short circuit rings shall be made of aluminum. Three thermal switches shall be embedded in the stator end coils, one per phase winding, to monitor the stator temperature. These thermal switches shall be used in conjunction with and supplemental to external motor overload protection and shall be connected to the motor control panel. F. The junction chamber shall be sealed off from the stator housing and shall contain a terminal board for connection of power and pilot sensor cables using threaded compression type terminals. The use of wire nuts or crimp-type connectors is not acceptable. The motor and the pump shall be produced by the same manufacturer. G. The motor service factor (combined effect of voltage, frequency and specific gravity) shall be 1.15. The motor shall have a voltage tolerance of +/- 10%. The motor shall be designed for continuous operation in up to an ambient temperature of 40°C ambient and shall have a NEMA Class B maximum operating temperature rise of 80°C. A motor performance chart shall be provided upon request exhibiting curves for motor torque, current, power factor, input/output kW and efficiency. The chart shall also include data on motor starting and no-load characteristics. H. Motor horsepower shall be sufficient so that the pump is non-overloading throughout its entire performance curve, from shut-off to run-out. The motor and cable shall be capable of continuous submergence underwater without loss of watertight integrity to a depth of 65 feet or greater. I. Motor shall also meet requirements specified in Section 26 05 15, Electric Motors, and the following supplemental data sheet(s). 2.10 PROTECTION 1. Each pump motor stator shall incorporate three thermal switches, one per stator phase winding and be connected in series, to monitor the temperature of the motor. Should the thermal switches open, the motor shall stop and activate an alarm. A float switch shall be installed in the seal leakage chamber and will activate if leakage into the chamber reaches 50% chamber capacity, signaling the need to schedule an inspection. 2. The thermal switches and float switch shall be connected to a Mini CAS control and status monitoring unit. The Mini CAS unit shall be designed to be mounted in the pump control panel. 2.11 ELECTRICAL AND CONTROL SYSTEMS A. General: 1. Conform to Division 26, ELECTRICAL. 2. Provide all necessary electrical components and wiring for a complete, functional system. 3. Where indicated, motor starters for constant-speed, 460-volt motors shall be provided in a separate motor control center specified in Division 26, ELECTRICAL. Provide all necessary control functions to properly interface with this motor starter. B. Wiring: The Drawings and Specifications indicate the anticipated wiring for the equipment provided under this section. If additional wiring is required, or if required wiring does not match what is indicated, the Contractor shall make the necessary modifications to the electrical wiring and documentation as part of the lump sum price. Wiring shall meet the requirements of Division Project No. 18088080 7 Section 44 42 56.29 Lake Lewisville WTP Dewatering Improvements Wet-Pit Submersible Pumps 26, ELECTRICAL, and NFPA 70. Insulation shall be rated 600 volts, minimum. Low-voltage (24V) signals shall be run in twisted, shielded pair cable. C. Electrical Raceways: Electrical wiring shall be installed in conduit meeting the requirements of Division 26, ELECTRICAL. Raceways shall be installed in accordance with Division 26, ELECTRICAL, and NFPA 70. 2.12 INSTRUMENTATION AND CONTROLS A. All instrumentation and control components shall be provided in accordance with the requirements of Division 26, ELECTRICAL. 2.13 PUMP CONTROL PANEL A. The pump supplier shall furnish and install a complete pump control panel to control, operate, and display information as indicated in the plans and specifications. The control system shall include all equipment, devices, wiring, and incidental materials to operate the system and display or relay information in accordance with these specifications. The intention of this section is to secure a complete control system that will operate equipment in accordance with narratives and requirements indicated in the plans, specifications, and manufacturer's literature for the equipment installed. B. All components provided shall be in accordance with the requirements of Division 26. C. Duplex Pump Control Panel, General: 1. Enclosure shall be NEMA 4X, suitable for installation outdoors. 2. Control panel shall be designed with a minimum SCCR rating of 22kA. 3. Panel shall be constructed in accordance with UL508A. 4. Incoming voltage is 480V, 3 phase. 5. Main circuit breaker disconnect interlocked with door handle. 6. Control power transformer for low voltage controls. 7. Surge protective device. 8. Phase monitor 9. Swing-out panel for operator devices. 10. Full voltage non-reversing starters. 11. H-O-A switch, run light, seal leak light, and elapsed time meter. 12. Flashing red high level alarm beacon. 13. Intrinsically safe relays for float switch inputs. D. Pump Controller 1. Provide a microprocessor-based pump controller specifically designed for use in duplex lift station control applications. The pump controller shall include a human-machine interface screen for operator interaction and monitoring. 2. Control – The pump station shall be configured to control the pumps utilizing four float switches. The float switches shall be configured as low level shutoff, pump off, duty pump on, and high level alarm. The engineer recommends the following float switch levels: 3. Duty pump and standby pump shall never be operated simultaneously, irrespective of water level in the Washwater Equalization Basin and other circumstances. E. Control Panel Operator Interfaces: At a minimum, provide the following functions for each pump on the swing-out panel: Project No. 18088080 8 Section 44 42 56.29 Lake Lewisville WTP Dewatering Improvements Wet-Pit Submersible Pumps 1. Hand Switches and Other Controls: a. Pump HAND-OFF-AUTO three position selector switch b. Reset Momentary Pushbutton 2. Alarms: a. Pump Fault Light - Red b. Seal Leak Light – Yellow c. High Level Alarm Light - Red 3. Status: a. Pump Running - Green b. Elapsed Time Meter F. Control Panel External Interfaces: Provide the following interfaces between the control panel and items outside the system package: 1. Digital Inputs a. One for each float switch. 2. Dry Contact Outputs a. Pump 1 running b. Pump 2 running c. Pump 1 seal leak d. Pump 2 seal leak e. Pump 1 fault f. Pump 2 fault g. Wet well high level PART 3 - EXECUTION 3.1 SHIPPING, STORAGE, HANDLING, AND PROTECTION A. As specified in Section 01 60 00, PRODUCT REQUIREMENTS. 3.2 INSTALLATION A. Work shall be as specified in Section 01 60 00, PRODUCT REQUIREMENTS. 3.3 FACTORY TESTS A. Motor Tests and Test Reports: As specified in Division 26, ELECTRICAL. B. Balance of Vibration: The rotating parts of each pump and its driving unit shall be dynamically balanced before final assembly. The driving unit alone shall operate without vibration in excess of the limits stated in the latest revision of NEMA MG 1. 3.4 FIELD TESTS A. Functional Test: Prior to plant startup, all equipment described herein and in the Submersible Pump Data Sheet(s) following shall be inspected for proper alignment, quiet operation, proper connection, and satisfactory performance by means of a functional test. Provide certification of test results. Tests and certification shall be as specified in Section 01 78 23, OPERATION AND MAINTENANCE DATA. 1. Testing performed upon each pump shall include the following inspections: a. Impeller, motor rating and electrical connections shall be checked for compliance with this specification. b. Prior to submergence, each pump shall be run dry to establish correct rotation. Project No. 18088080 9 Section 44 42 56.29 Lake Lewisville WTP Dewatering Improvements Wet-Pit Submersible Pumps c. Each pump shall be run submerged in water. d. Motor and cable insulation shall be tested for moisture content or insulation defects. 2. Upon request, a written quality assurance record confirming the above testing/inspections shall be supplied with each pump at the time of shipment. 3. Each pump (when specified) shall be tested in accordance with the latest test code of the Hydraulic Institute (H.I.) at the manufacturer to determine head vs. capacity and kilowatt draw required. Witness tests shall be available at the factory upon request. 4. The pump(s) shall be rejected if the above requirements are not satisfied. B. Vibration Test: The complete assembly, consisting of the driving unit and pump, connected and in normal operation, shall not develop amplitudes of vibration exceeding limits recommended by the current edition of Hydraulic Institute Standards. If directed by Engineer, vibration tests shall be conducted at Contractor’s sole expense to determine amplitude of vibration, and Contractor shall make any corrections necessary to meet these requirements. If corrections are made, a second vibration test shall be done following corrections. 3.5 MANUFACTURER’S SERVICES A. Provide representative for three (3) days on-site to verify correct installation, equipment testing, equipment certification, and personnel training. B. The equipment manufacturer shall furnish the services of a qualified factory trained field service engineer for 8-hour working day(s) at the site to inspect the installation and instruct the owner's personnel on the operation and maintenance of the pumping units. After the pumps have been completely installed and wired, the contractor shall have the manufacturer do the following: 1. Megger stator and power cables. 2. Check seal lubrication. 3. Check for proper rotation. 4. Check power supply voltage. 5. Measure motor operating load and no load current. 6. Check level control operation and sequence. 3.6 MANUFACTURER’S CERTIFICATE(S) A. Provide Manufacturer’s certificate(s). In accordance with Section 01 79 00, DEMONSTRATION AND TRAINING. 3.7 SUPPLEMENTS A. The supplements listed below, following “END OF SECTION,” are part of this Specification. 1. Section 44 42 56.29.1 DS – Wet-Pit Submersible Pumps Supplement END OF SECTION Project No. 18088080 1 Section 44 46 26.13 Lake Lewisville WTP Dewatering Improvements Gravity Thickener Mechanisms SECTION 44 46 26.13 – GRAVITY THICKENER MECHANISMS PART 1 - GENERAL 1.1 SUMMARY A. This section includes the Work necessary to completely furnish and install the gravity thickener mechanisms, all related equipment, material and appurtenances. 1.2 GENERAL A. Equipment Numbers: See Supplemental Data Sheet(s) at end of section. B. Like items of equipment provided hereinafter shall be the end products of one manufacturer to achieve standardization of appearance, operation, maintenance, spare parts and manufacturer’s services. C. Unit Responsibility: The Work requires that the gravity thickener mechanisms, including but not limited to drives, collector arms with pickets, walkways, weirs, local control panels, instruments, and components, complete with all accessories and appurtenances be the end product of one responsible system manufacturer or responsible system supplier. Unless otherwise indicated, the Contractor shall obtain each system from the responsible supplier of the equipment, which supplier shall furnish all components and accessories of the system to enhance compatibility, ease of operation and maintenance, and as necessary to place the equipment in operation in conformance with the specified performance, features, and functions without altering or modifying the Contractor's responsibilities under the Contract Documents. The Contractor is responsible to the Owner for providing the equipment systems as specified herein. D. General Requirements: See Division 01, GENERAL REQUIREMENTS, which contains information and requirements that apply to the work specified herein and are mandatory for this project. 1.3 REFERENCES A. The following is a list of standards which may be referenced in this Section: 1. American Gear Manufacturers Association (AGMA): 908-B89, Geometry Factor for Determining the Pitting Resistance and Bending Strength of Spur, Helical, and Herringbone Gear Teeth. 2. American Institute of Steel Construction (AISC): Specifications for the Design, Fabrication, and Execution of Structural Steel for Buildings. 3. American National Standards Institute/American Bearing Manufacturers Association (ANSI/ABMA): 9 & 11, Load Ratings and Fatigue Life for Ball Bearings and Roller Bearings. 4. American National Standards Institute/American Gear Manufacturers Association (ANSI/AGMA): a. 2000-A88, Gear Classification and Inspection Handbook Tolerances and Measuring Methods for Unassembled Spur and Helical Gears. b. 2001-C95, Fundamental Rating Factors and Calculation Methods for Involute Spur and Helical Gear Teeth. c. 2002-B88, Tooth Thickness Specification and Measurement. d. 2003-B97, Rating the Pitting Resistance and Bending Strength of Generated Straight Bevel, Zerol Bevel, and Spiral Bevel Gear Teeth. e. 2004-B89, Gear Materials and Heat Treatment Manual. f. 2009-A98, Bevel Gear Classification, Tolerances and Measuring Methods. g. 6001-D97, Design and Selection of Components for Enclosed Gear Drives. h. 6010-F97, Standard for Spur, Helical, Herringbone and Bevel Enclosed Drives. Project No. 18088080 2 Section 44 46 26.13 Lake Lewisville WTP Dewatering Improvements Gravity Thickener Mechanisms i. 6022-C93, Design Manual for Cylindrical Worm gearing. j. 6034-B92, Practice for Enclosed Cylindrical Worm gear Speed Reducers and Gear motors. k. 9005-D94, Industrial Gear Lubrication. 5. American Society of Mechanical Engineers (ASME): B29.1M, Precision Power Transmission Roller Chains, Attachments, and Sprockets. 6. American Welding Society (AWS): B2.1, Standard for Welding Procedure and Performance Qualification. a. D1.1, Structural Welding Code – Steel. b. QC 1, Standard for AWS Certification of Welding Inspectors. 7. ASTM International (ASTM): a. A36/A36M, Standard Specification for Carbon Structural Steel. b. A48, Standard Specification for Gray Iron Castings. c. A123/A123M, Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products. d. A148/A148M, Standard Specification for Steel Castings, High Strength, for Structural Purposes. e. 6A167, Standard Specification for Stainless and Heat-Resisting Chromium-Nickel Steel Plate, Sheet, and Strip. f. A193/A193M, Specification for Alloy-Steel and Stainless Steel Bolting Materials for High-Temperature Service. g. A276, Standard Specification for Stainless Steel Bars and Shapes. h. A283/A283M, Standard Specification for Low and Intermediate Tensile Strength Carbon Steel Plates. i. A285/A285M, Standard Specification for Pressure Vessel Plates, Carbon Steel, Low- and Intermediate-Tensile Strength. j. A325, Standard Specification for Structural Bolts, Steel, Heat Treated, 120/105 ksi Minimum Tensile Strength. k. A384, Standard Practice for Safeguarding Against Warpage and Distortion during Hot-Dip Galvanizing of Steel Assemblies. l. A385, Standard Practice for Providing High-Quality Zinc Coatings (Hot-Dip). m. A536, Standard Specification for Ductile Iron Castings. n. A666, Standard Specification for Annealed or Cold-Worked Austenitic Stainless Steel Sheet, Strip, Plate, and Flat Bar. o. D3034, Standard Specification for Type PSM Poly (Vinyl Chloride) (PVC) Sewer Pipe and Fittings. 8. National Electrical Manufacturers Association (NEMA): 250, Enclosures for Electrical Equipment (1,000 Volts Maximum). a. NEMA MG-1. 1.4 DEFINITIONS A. Alarm Torque: 90 percent of design running torque. B. Cutout Torque: 120 percent of design running torque. C. Design Running Torque: 1. Torque used to select size, strength, and type of materials and components for mechanism and drive system. 2. At which or below will provide continuous 24 hour per day mechanism operation for period of not less than 20 years at design torque condition and rotational speed without damage, permanent deformation or overload. 3. Equal to 50 percent on overload device scale. D. Slenderness Ratio: Ratio of unbraced length to least radius of gyration. Project No. 18088080 3 Section 44 46 26.13 Lake Lewisville WTP Dewatering Improvements Gravity Thickener Mechanisms E. Submerged Metal: Metal below gear head drive and a plane 18 inches above weir elevation indicated. F. Ultimate Torque: 200 percent of design running torque and below which no portion of mechanism will be damaged if operated for only a short period of time (a few seconds) and equal to 100 percent on overload device scale. G. Certified Welding Inspector (CWI): As defined in AWS QC 1. 1.5 SUBMITTALS A. General: Administrative, shop drawings, samples, quality control and contract close-out submittals shall conform to the requirements of Section 01 33 00, SUBMITTAL PROCEDURES. B. In addition to the requirements of Section 01 33 00, SUBMITTAL PROCEDURES, submit the following additional specific information: 1. Shop Drawings: a. Equipment Assembly: Make, model, weight, and horsepower of each. b. Manufacturer’s Catalog: Product information, descriptive literature, dimensional layouts, specifications, standard and specialized equipment assembly cuts, and identification of materials of construction. c. Detailed Drawings: 1). Structural, Mechanical and Electrical: Show equipment fabrications and interface with other items including dimensions, size, and locations of con- nections to other work, and weights of associated equipment. 2). Structural and Mechanical: Details of walkway bridge, rotating rake arms. d. Design Details: 1). Running, Alarm, Cutout, and Ultimate Torque ratings of drive unit assem- bly. 2). Ultimate Torque load capabilities of drive unit assembly, torque cage, ro- tating rake arms. e. Hydraulic calculations and performance verification data. f. Certification of Structural Calculations: Letter of certification for structural design of mechanism, shall be signed and sealed by registered professional engineer (Designer). Copies of detailed structural design calculations shall not be submitted for review. If submitted, calculations will be returned without review. g. Structural Loads: Static, dynamic, and torque reaction loads to be transferred into structure at center column and Access Bridge support locations. h. Details of torque sensing and load indication device. i. Identification of outside utility requirements for each component such as air, water, and power. j. Power and control wiring diagrams, including terminals and numbers. k. Functional description of internal and external instrumentation and controls to be supplied including list of parameters monitored, controlled, or alarmed. l. Painting/Coating System(s): Include manufacturer’s descriptive technical catalogue literature and specifications. m. Diameter of ball race. n. Motor nameplate data per NEMA MG-1, motor manufacturer and any appurtenances. o. Functional and Performance test description and results. 2. Quality Control Submittals: Project No. 18088080 4 Section 44 46 26.13 Lake Lewisville WTP Dewatering Improvements Gravity Thickener Mechanisms a. Designer qualifications: 1). Designer: Professional engineer registered in the State of Texas. 2). Must show 10 years’ experience with gravity thickener mechanism design. b. Manufacturer’s Certificate of Compliance, in accordance with Division 01, GENERAL REQUIREMENTS. c. Special shipping, storage and protection, and handling instructions. d. Test procedures. e. Test results, reports, and certifications. f. List 10 installations of equipment in successful operation similar to equipment specified. g. Operation and Maintenance Data: As specified in Division 01, GENERAL REQUIREMENTS. h. Manufacturer’s Certificate of Proper Installation. 3. Contract Closeout Submittals: Service records for maintenance performed during construction. 1.6 OPERATION AND MAINTENANCE DATA A. O&M Manuals: Content, form, and schedule for providing as specified in Section 01 78 23, OPERATION AND MAINTENANCE DATA. B. Maintenance Summary Forms: As specified in Section 01 78 23, OPERATION AND MAINTENANCE DATA. 1.7 WARRANTY A. Provide warranty for a period of 24 months after the final acceptance of the equipment by the Owner and Engineer. The warranty shall stipulate that the equipment furnished is suitable for the purpose intended and free from defects of material and workmanship for the duration of the warranty. In the event the equipment fails to perform as specified, the Manufacturer shall promptly repair or replace the defective equipment without additional cost to the Owner. B. Spare parts identified within this specification shall not be used to address warranty repairs. PART 2 - PRODUCTS 2.1 MANUFACTURERS A. Where a manufacturer’s standard equipment name and/or model number is listed, the equipment system shall be provided as modified to conform to the performance, functions, features, and materials of construction as specified herein. B. Materials, equipment, and accessories specified in this Section shall be products of: 1. Westech Engineering. 2. Ovivo, LLC 3. Evoqua 2.2 GENERAL REQUIREMENTS A. Furnish units meeting performance and design requirements as specified and as shown on the Drawings. B. Performance Requirements: Project No. 18088080 5 Section 44 46 26.13 Lake Lewisville WTP Dewatering Improvements Gravity Thickener Mechanisms 1. Provide gravity thickening of residuals. 2. Collect and convey thickened residuals to center hopper. 3. Capable of normal operation with residuals stored in the unit. 4. Operates in conjunction with odor control covers, the covers’ associated support systems and the cover’s associated facilities. C. Design Requirements: 1. Design Running Torque: Drive unit shall be sized such that all gearing meets Design Running Torque in accordance with AGMA 2001 and 6034. Design Running Torque shall be selected by Manufacturer for service conditions specified. 2. Rotational Speed: Constant speed between 0.04 rpm and 0.1 rpm. 3. Capable of withstanding, without failure or permanent deformation of any part, torque load of at least twice Design Running Torque and loads generated while sweeping in gravity thickener floor bottom grout. 4. Gears, Bearings, Chains, and Sprockets: Above water surface of gravity thickener. 5. Drive Mechanism: Design to allow removal of internal gears, balls, and strip liners without walkway bridge removal. 6. Base design upon all-welded construction except at locations requiring periodic field adjustment and as specifically approved. 7. At Ultimate Torque load, stresses in members shall not exceed 90 percent of material yield strength. 8. Slenderness Ratio: Maximum of 200 for any compression member and maximum of 300 for any tension member. 9. Mechanism mounted on walkway and supported by structural steel bearing on walls of each end of gravity thickener structure. 2.3 SUPPLEMENTS A. See supplemental data sheets to this Section for additional equipment system product, component, and accessory information and requirements. 2.4 CENTER DRIVE UNIT ASSEMBLY A. Ultimate Torque Rating: Not less than 200 percent of Design Running Torque. B. Motor, Primary and Final Speed Reducers: Separately and independently mounted at center gear head drive platform. C. Electric Drive Motor: In accordance with Division 26, ELECTRICAL and Scraper Drive Data Sheet located in Supplements following “END OF SECTION.” D. Speed Reducer Unit (Option A): 1. Cycloidal, helical, or planetary speed reducers directly connected to a motor and keyed to the pinion. 2. Cycloidal drives shall be made of high carbon chromium bearing steel and be fixed to the drive casing. 3. An eccentric bearing on the high speed shaft shall roll cycloidal discs of the same material around the internal circumference of this main ring gear. 4. The lobes of the cycloid disc shall engage successively with the pins in the fixed ring gear. 5. The movement of the cycloid discs shall be transmitted then by the pins to the low speed shaft. 6. Speed reducer efficiency shall be a minimum of 90% per reduction stage. 7. The reducers shall be fitted with radial and thrust bearings of proper size for all mechanism loads and be grease lubricated. Project No. 18088080 6 Section 44 46 26.13 Lake Lewisville WTP Dewatering Improvements Gravity Thickener Mechanisms E. Low Speed Final Reduction Unit (Option A): 1. The drive unit shall consist of a solid internal main spur gear, bearing turntable, pinion, secondary speed reducer, support base, and drive unit bearing. a. The drive bearing shall include a forged steel precision gear/bearing set, with fully contoured raceways hardened to a minimum 58-60 RC and protected by a neoprene seal. 2. Low Speed Gearset: a. The design running torque rating of the drive gearing shall be based on the smaller of the strength and durability values determined from the above AGMA standard. b. The drive main gear shall be designed to a minimum AGMA 6 rating when rated in accordance with the latest AGMA standard. c. All spur gearing shall be designed to the latest AGMA spur gear standard for strength and surface durability, based on a life of 175,000 hours. d. Main internal gear shall be forged of alloy hardened steel. e. The pinion shall be heat treated alloy steel. f. Support base shall be welded steel. 3. Main Bearing: a. Ball raceway diameter: Minimum 20.53” b. The drive main bearing shall be designed for the total rotating mechanism loads with a minimum L-10 life of 100 years or 876,000 hours. F. Primary Speed Reducer (Option B): 1. Horizontally mounted cylindrical-worm or helical-worm gear motor type with gears supported by anti-friction bearings. Connected to secondary speed reducer via a chain. 2. AGMA 6034-B92 and AGMA Service Classification II. 3. The gear motor primary speed reducer shall drive the final worm gear reducer through a #60 roller chain and steel sprockets enclosed in a galvanized 22 gauge steel guard. 4. Oil Fill, Drain and Level Indicator Devices, and Lubricant: ANSI/AGMA 9005-D94. G. Chain Drive (Option B): 1. Roller Chain: Standard, ANSI B29.1. 2. Connect drive sprocket on primary speed reducer to driven sprocket on secondary speed reducer input shaft. 3. Sprockets and chain shall be designed for the connected horsepower of the drive with a minimum service factor of 4.0. Provision shall be made for adjustment of chain tension. H. Secondary Speed Reducer (Option B): 1. Cylindrical-Worm and Worm-Gear Type: a. Shafts supported by antifriction bearings and output shaft directly driving pinion gear of low-speed main bearing assembly. 2. Load Capacity and Torque Rating: AGMA 6034-B92. 3. Design: ANSI/AGMA 6022-C93. 4. Output Shaft: One-piece output extending through worm-gear and low speed main gear drive pinion without intermediate couplings. 5. Worm: Steel, heat treated, ANSI/AGMA 2004-B89, ground and polished. 6. Worm-Gear: Centrifugally cast, high silicon bronze copper alloy, or ductile iron. 7. Bearings: ABMA L-10, life of 180,000 hours minimum. 8. Oil fill, drain and level indicator devices, and lubricant conforming to ANSI/AGMA 9005-D94. 9. Enclosure: Cast iron ASTM A48, Class 40 minimum housing, and registered fit mounted to gear head drive platform. I. Low Speed Final Reduction Unit (Option B): 1. Enclosed turntable, continuous multipoint contact contoured raceway type with hardened surfaces and balls (Precision bearings). a. Ring Gear: Internal or external toothed, spur pinion gear driven, attached to secondary speed reducer output shaft. Project No. 18088080 7 Section 44 46 26.13 Lake Lewisville WTP Dewatering Improvements Gravity Thickener Mechanisms 2. Low Speed Gearset: a. Design and Rated: ANSI/AGMA 2001-C95. b. Service Factor: Minimum 1.5 based upon Design running Torque. Power Rating: 1). Lower of pitting resistance and bending strength ratings for pinion and gears. 2). Based upon continuous 24 hours per day service at Design Running Torque for 180,000 hours minimum. c. Spur Pinion Gear: 1). Steel: Heat treated; integral with or keyed to its shaft. 2). Wall Thickness (Above Keyway): Minimum depth of one tooth. d. Ring Gear: 1). Solid one-piece construction of cast alloy bronze (AISI 4140/42H). 2). Split Gear 3). Bolt to center torque cage that support and rotate collection mechanism. e. Teeth: Full depth, ANSI/AGMA 2001-C95. 3. Main Bearing: a. Ball Raceway Diameter: The main bearing shall have a minimum pitch diameter of 16.25 inches to assure stability without the necessity of underwater guide shoes and shall include chrome alloy steel balls, minimum 0.75 inch diameter, which shall bear vertically and horizontally upon a four point contact precision bearing assembly fitted into the turntable base and the worm gear. The bearing assembly shall be such that the B10 life of the liner is a minimum of 50 years based on the mechanism speed and a uniformly distributed load due to the rotating mechanism. 4. Ring Gear, Pinion Gear, and Main Bearing Ball Races: a. Oil bathed, steel dust shield, and felt seal protected. Neoprene seals accepted with approval from ENGINEER. b. Oil fill, drain and level indicator devices, and lubricant conforming to ANSI/AGMA 9005-D94. c. Casing with manual condensate drain. 5. Oil filling and level pipe, drain plug, and sight gauge. Attach pipe to turntable bottom within base center for easy access. J. Mechanism Overload Device: 1. Mechanical or Hydraulic a. Mechanical or Hydraulic: Actuate integral contacts to indicate impending overload and shutoff drive motor at predetermined load. b. Impending Overload Contact (Alarm Torque): Actuate at 90 percent of Design Running Torque. c. Motor Shutdown Contact (Cutout Torque): Actuate at 120 percent of Design Running Torque. d. Contacts: Single-pole, double-throw rated 5 amps, 120V ac. e. Enclosure: NEMA Type 4X cast epoxy coated aluminum. f. Indicating Pointer: Indicate relative load on graduated scale up to Ultimate Torque. g. The pointer shall provide a visual reading of the relative worm gear output torque on a 0 to 100 percent graduated scale. The 100 percent reading shall equal the 100 percent drive rating as specified. 2. Sheer Pin a. A safety shear pin shall also be included in the design to prevent overload. Manufacturer shall include their standard shear pin appropriate for the design of their manufactured equipment and process application. 2.5 INFLUENT STILLING WELL AND PIPE A. ASTM A276 316 Stainless Steel, minimum 3/16-inch thick plates and minimum 1/4-inch thick shapes. Project No. 18088080 8 Section 44 46 26.13 Lake Lewisville WTP Dewatering Improvements Gravity Thickener Mechanisms B. Stilling Well Configuration: 1. The stilling well shall efficiently and evenly disperse the influent liquid into the tank without disturbance and provide a flocculation zone. 2. Extend minimum 6 inches above clarifier static liquid level. 3. Influent stilling well depth below clarifier static liquid level: As indicated on data sheets. 4. Stilling well diameter: As indicated on data sheets. C. Inlet Pipe: 1. Provide inlet pipe for delivering influent into stilling well. 2. Provide flange connections as required to connect pipe to existing gravity thickener piping. 3. Provide all necessary pipe supports, brackets, and accessories to properly support pipe. 2.6 ACCESS WALKWAY A. Access Walkway Support System: 1. All-welded rolled wide flange beam type bridge or truss construction supported rigidly at one end on gravity thickener wall with thermal expansion compensating anchorage. a. Contractor shall be responsible for field verifying and coordinating dimensions and other pertinent information with Manufacturer, as necessary for proper installation. b. See Drawings for additional information regarding walkway attachment methods and coordination. 2. Diagonally cross brace and space beams as necessary to carry loads and produce required clear walkway width. B. Bridge Design: 1. Maximum Vertical Deflection: 1/360 of span under uniform 50-pound per square foot of walkway surface live load, plus dead load. Camber for 1/3 live load plus dead load. 2. Maximum Horizontal Deflection: 1/360 of span under uniform horizontal loading of 50 pounds per linear foot. 3. Walkway Surface Elements: Do not utilize to reduce calculated bridge deflections. 4. Designed to support mechanism. C. Walkway Surface: 1-1/2-inch minimum thickness aluminum grating and extend in width to at least guardrail/handrail supports. D. Walkway Width: 36 inches minimum clear between guardrails/handrails. E. Guardrails/Handrails: 1. Extend all along both sides of bridge and all around center platform. 2. Anodized Aluminum: In accordance with Division 05, METALS. 3. Truss type bridge members shall not be used as guardrail/handrail. Attach top and intermediate rails specified to bridge elements using standard premanufactured wall bracket units. F. Kickplates: 1. Anodized Aluminum: In accordance with Division 05, METALS. 2. Four-inch minimum high by 3/16-inch minimum thickness anodized aluminum, attached with Type 316 stainless steel fasteners. 3. Located around center platform perimeter and full length of both sides of access walkway. 2.7 CENTER SHAFT AND RAKE ARMS A. Center shaft to be minimum 6” Schedule 40 provided with connection point for two residuals removal arms Project No. 18088080 9 Section 44 46 26.13 Lake Lewisville WTP Dewatering Improvements Gravity Thickener Mechanisms B. Quantity: Two Rake Arms per mechanism (minimum). Rake arms to be stainless steel truss construction or stainless steel channel with steel raking blades and adjustable stainless steel squeegees. Rake arms to be supported from center shaft. C. Pickets: The gravity thickener mechanism shall be provided with pickets, which rotate with the rake arms. The pickets shall be constructed of stainless steel angle. Pickets shall be spaced evenly along the rake arm to insure complete raking of the basin floor twice per revolution, as recommended by the Manufacturer. D. Sufficient strength and rigidity such that at Ultimate Torque load and while sweeping in floor grout no member will be stressed to level beyond maximums allowed by current AISC Specifications. E. ASTM A276 316 Stainless Steel angular and tubular elements. Designed to meet or exceed current AISC Specifications when continuous torque of the drive unit is applied. F. Scraper blades shall be designed for sufficient residuals transport capacity to handle the design solids loading rate with the depth of the blade varying from a minimum at the tank periphery to a maximum at the tank center. G. Squeegees: Materials: 20-gauge Type 316 stainless steel. 1. Bolts, Nuts, and Washers: Type 316 stainless steel. 2. Vertical Alignment: Between 1/2-inch minimum and 1-1/2-inch maximum clearance above grouted gravity thickener bottom. Designed for a 2-inch minimum adjustment in the vertical plane. 3. Attached to stainless steel residuals scraper blades. H. Residuals Removal: 1. The center shaft shall extend down to a residuals cone in the center of the tank floor. The shaft shall have a steel cone scraper attached to its lower end to prevent deposit of solids in the residuals cone. 2.8 WEIR PLATES A. Provide weirs where required as indicated on gravity thickener data sheets following end of this section. B. Weirs shall be constructed of fiberglass reinforced plastic (FRP) as specified in Section 06 80 17, Weirs. 2.9 ELECTRICAL COMPONENTS AND ACCESSORIES A. General: 1. Conform to Division 26, ELECTRICAL. 2. Provide all necessary electrical components and wiring for a complete, functional system. 3. Where indicated, motor starters for constant-speed, 460-volt motors shall be provided in a separate motor control center specified in Division 26, ELECTRICAL. Provide all necessary control functions to properly interface with this motor starter. B. Wiring: The Drawings and Specifications indicate the anticipated wiring for the equipment provided under this section. If additional wiring is required, or if required wiring does not match what is indicated, the Contractor shall make the necessary modifications to the electrical wiring and documentation as part of the lump sum price. Wiring shall meet the requirements of Division 26, ELECTRICAL, and NFPA 70. Insulation shall be rated 600 volts, minimum. Low-voltage (24V) signals shall be run in twisted, shielded pair cable. Project No. 18088080 10 Section 44 46 26.13 Lake Lewisville WTP Dewatering Improvements Gravity Thickener Mechanisms C. Electrical Raceways: Electrical wiring shall be installed in conduit meeting the requirements of Division 26, ELECTRICAL. Raceways shall be installed in accordance with Division 26, ELECTRICAL, and NFPA 70. 2.10 INSTRUMENTATION AND CONTROLS A. All instrumentation and control components shall be provided in accordance with the requirements of Division 26. B. General: The Drawings and these Specifications depict the minimum functional requirements of the control system to be provided. Provide all items not specifically called out which are required to implement the functions described herein. The supplier shall provide all instrumentation and controls necessary to provide a safe and operable system. The specific control system proposed shall be subject to the approval of the Engineer. C. Instrumentation: Provide and install an electromechanical torque sensing-device that is actuated by thrust from the worm gear. The device shall provide indication of torque sensed and shall provide two independently adjustable SPDT torque alarm contacts (HIGH and HIGH-HIGH). The device shall be mounted in a NEMA 4X enclosure with an integral conduit box and terminals. Contacts shall be rated for a minimum of 5A at 120V ac. D. Control Panel, General: 1. Enclosure: Corrosion resistant, NEMA 4X stainless steel, suitable for installation outdoors. 2. Power- 480 volts, 3-phase, 60-Hz. 3. Main Disconnect: Circuit breaker interlocked with door handle. 4. In general, the control panel shall include the following components: a. Panel space heater with thermostat. b. Motor starters for each motor associated with the panel. c. Surge Arrestor d. Phase monitor e. Control power transformer f. Control relays g. Solid State Overload Relay h. Terminal points for interconnection with ancillary equipment. 5. The control panel shall meet U.L. requirements and shall be U.L. 508A listed as a complete assembly. The control panel shall be completely pre-wired and factory tested prior to shipment. E. Control Panel Operator Interfaces: The control panel shall at a minimum be provided with the following functions on the face of the panel. 1. Hand switches and other controls: a. Gravity Thickener HAND/OFF/REMOTE switch b. Reset c. HIGH TORQUE alarm horn silence 2. Alarms: a. Gravity Thickener Fault Light b. 90% HIGH TORQUE Light c. 120% Cutoff Torque Light 3. Status: a. Gravity Thickener Running Light b. Elapsed Time Meter F. External Interfaces: Provide the following interfaces between the control panel and items outside the system package. 1. Dry Contact Inputs: a. Gravity Thickener Enable Project No. 18088080 11 Section 44 46 26.13 Lake Lewisville WTP Dewatering Improvements Gravity Thickener Mechanisms 2. Dry Contact Outputs: a. Run status b. Hand/Off/Auto switch in REMOTE status c. Motor high temperature d. Phase loss e. Motor overload f. 90% TORQUE alarm g. 120% TORQUE alarm 2.11 DISSIMILAR METALS A. Isolate dissimilar metals or connectors to prevent direct contact and electrical conductivity. 1. Use 1/8-inch thick continuous neoprene gasket to insulate aluminum gratings, checker plate and handrail post bases from access walkway support bridge and other components. 2. Use insulating washers and Teflon sleeves at bolted connections. 2.12 ACCESSORIES A. Lifting Lugs: Provide on equipment assemblies and components weighing over 100 pounds. B. Anchor Bolts: Provide coated Type 316, stainless steel bolts, sized by equipment manufacturer and at least 1/2 inch in diameter. C. Equipment Identification Plates: Provide 16-gauge, Type 316 stainless steel, identification plate securely mounted on each separate equipment component and panel in a readily visible location. Plate shall bear 1/4-inch high engraved block type black enamel filled equipment identification number and letters. 2.13 TOOLS AND SPARE PARTS A. Tools: The work includes furnishing two complete set of special tools recommended by the manufacturer for maintenance and repair of each separate type of equipment; tools shall be stored in tool boxes, and identified with the equipment number by means of stainless steel or solid plastic name tags attached to the box. B. Spare Parts: 1. All equipment shall be furnished with the specified manufacturers spare parts, as indicated in the individual equipment sections. 2. Spare parts shall be tagged by project equipment number and identified as to part number, equipment manufacturer, and subassembly component (if appropriate). Spare parts subject to deterioration such as ferrous metal items and electrical components shall be properly protected by lubricants or desiccants and encapsulated in hermetically sealed plastic wrapping. Spare parts with individual weights less than 50 pounds and dimensions less than 2 feet wide, or 18 inches high, or 3 feet in length shall be stored in a wooden box with hinged wooden cover and locking clasp. Hinges shall be strap type. The box shall be painted and identified with stenciled lettering stating the name of the equipment, equipment numbers, and the words "spare parts." A neatly typed inventory of spare parts shall be taped to the underside of the cover. 3. At a minimum furnish, tag, and box for shipment and storage the following spare parts and special tools: Item Quantity Gaskets, O-rings, keys, dowels, and Pins One complete set per unit Project No. 18088080 12 Section 44 46 26.13 Lake Lewisville WTP Dewatering Improvements Gravity Thickener Mechanisms Gear reducer bearings and seals One complete set per unit Shear pins of each different size Six per unit Drive chain and/or belts One set each type and size per unit Special tools required to maintain or dismantle drive unit except for low speed main bearing, but including that required for removal/insertion of main bearing race balls One complete set Lubricants As required for 1 year of continuous operation. 2.14 FABRICATION A. General: Fabricate bridge beam or stringer sections in continuous unbroken pieces. B. Shop Assembly: 1. Shop fabricate and assemble mechanism components in the largest sections practicable and permitted by transportation carrier regulations. 2. Properly match-mark units for ease of field erection. 3. Completely assemble center drive unit in manufacturer’s shop and test to assure proper operation, and calibration of torque controls. 4. Completely shop assemble and test control panels. 5. Divide large assemblies into flanged sections. Bolt together with Type 316 stainless steel fasteners and provide continuous field seal welds at all connections. C. Shop/Factory Finishing: 1. Exposed metal surfaces shall be factory prepared and primed and field finish coated in accordance with Section 09 90 00 Painting and Protective Coatings, System No. 3. 2. Seal welding shall be provided for submerged welded joints. Skip welds are not acceptable. PART 3 - EXECUTION 3.1 ASSEMBLY AND PREPARATION FOR SHIPMENT A. Each drive unit, including motor, shall be completely factory assembled, aligned, and securely crated for shipment. Accessory equipment which cannot be shipped assembled to the unit, such as shafts, baseplates, impellers, spare parts, and anchorage materials, shall be separately crated, clearly marked as to the contents, and shipped on the same shipment as the drives. B. For shipment, exposed surfaces subject to rust, such as mounting flange faces, etc., shall be covered with a rust-preventive compound such as Kendall No. 5, or equal. 3.2 PRODUCT DELIVERY, STORAGE, AND HANDLING A. Comply with Section 01 60 00, PRODUCT REQUIREMENTS. B. Delivery of Materials: Products shall be delivered in original, unbroken packages, containers, or bundles bearing the name of the manufacturer. Project No. 18088080 13 Section 44 46 26.13 Lake Lewisville WTP Dewatering Improvements Gravity Thickener Mechanisms C. Storage: Products shall be carefully stored in a manner that will prevent damage and in an area that is protected from the elements. D. Protection of Equipment: Equipment shall be boxed, crated, or otherwise protected from damage and moisture during shipment, handling, and storage. Equipment shall be protected from exposure to corrosive fumes and shall be kept thoroughly dry at all times. Mechanisms, motors, drives, electrical equipment, and other equipment with anti-friction or sleeve bearings shall be stored in weather-tight and heated storage facilities prior to installation. For extended storage periods, plastic equipment wrappers shall not be used to prevent accumulation of condensate in gears and bearings. 3.3 INSTALLATION A. The Contractor shall install the gravity thickener as shown on the drawings. B. Installation shall be by the Contractor with coordination from Manufacturer. C. Anchor Bolts: Provide templates and specify bolts for furnishing by Contractor. D. Manufacturer shall coordinate with Contractor during all phases of installation to ensure that manufacturer’s representative is present during critical installation operations. 3.4 FIELD QUALITY CONTROL A. Prior to placement of gravity thickeners into service, check weir plate settings by filling gravity thickeners with water to design elevation shown on the Drawings. Readjust as recommended by Engineer. B. Weirs: Level to within plus or minus 1/16 inch of design elevation. C. Functional Tests: Conduct on each mechanism. Test for continuous 3-hour period without malfunction, as witnessed by and approved by Owner or Engineer. D. Performance Test: 1. Conduct on each completed assembly in accordance with accepted test procedures. 2. Perform under actual or approved simulated operating conditions. 3. Perform to confirm mechanical and structural compliance with specified torque requirements. 4. Load each mechanism to 120 percent of Design Running Torque to demonstrate mechanism’s structural capability to withstand resulting loads. a. Apply loads to mechanism’s rake arms through cables or other means anchored to basin floor or wall. Utilize hydraulic cylinder, springs, or other means that allows machine to rotate for peripheral distance of at least 3 feet under load. b. Accomplish testing with machine in operation. c. Conduct static torque test on mechanism. Anchor both collector arms, start collector drive, and load drive to 120 percent of Design Running Torque to demonstrate mechanism’s structural capability to withstand resulting loads. 5. Demonstrate mechanism overload devices; verify actual torques at which Alarm and Cutout (shutdown) contacts are actuated. a. Correlate with scale indications. b. Prepare test report containing results. 6. Replace shear pins after torque testing is completed. Spare parts shall not be used. Project No. 18088080 14 Section 44 46 26.13 Lake Lewisville WTP Dewatering Improvements Gravity Thickener Mechanisms 3.5 MANUFACTURER’S SERVICES A. A manufacturer’s representative for the equipment specified herein shall be present at the job site for the minimum person-days listed for the services herein under for each unit provided, travel time excluded: 1. Installation, Startup, and Testing Services: a. 1 person-day for installation assistance, inspection, and Certificate of Proper Installation prior to grouting. b. 1 person-day for functional and performance testing. c. Provide Qualifications of Manufacturer's Representative. 2. Training Services: a. 1 person-day of prestart classroom or jobsite training of Owner’s personnel. b. Training of Owner’s personnel shall be at such times and at such locations as required and approved by the Owner. B. See Section 01 79 00, DEMONSTRATION AND TRAINING. 3.6 MANUFACTURER’S CERTIFICATES A. Provide Manufacturer’s certificate(s) in accordance with Section 01 79 00, DEMONSTRATION AND TRAINING. 3.7 SUPPLEMENTS A. Supplements listed below are part of this Specification. 1. 44 46 26.13.1 DS – Gravity Thickener Mechanisms Supplement END OF SECTION LEWISVILLE LAKE WATER TREATMENT CITY OF DENTONDENTON, TXPLANT IMPROVEMENTS0529-001D22SCALE:ADJUSTABLE FLOOR MOUNTED PIPE SUPPORTNOT TO SCALE0529-001D2213"8"1-1/2"9"3-1/2"2-1/2"2-1/2"13-1/2"13-1/2"13-1/2"13-1/2"13-1/2"13-1/2"6"15-3/8"20"32'36"30"24'24-1/2"22-1/2'"21-5/16"17-15/16"6"6"6"6"2-1/2"2-1/2"8"14"18"16"12"10"4"6"5"3-1/2"3"3"6-7/8"9"13-7/8"12-3/8"10-15/16"9-15/16"8-1/2"4"6"4"3"3"11"11"9"9"5-1/2"4-7/8"4-1/4"4"3-3/4"3"3"3"9"9"9"9"9"25-1/2"3-1/2"21"34-3/4"32-3/4"31-1/2"28-1/4"4"4"4"4"28-1/4"30-1/4"27"23-3/4"22-1/4"20-3/4"19-3/4"18-1/4"15-1/2"15-1/4"14-3/4"13-1/2"13-1/4"2-1/2"11-3/4"3"3-1/2"3"2-1/2"2-1/2"16-1/4"19-1/2"17-3/4"15"13-1/2"2-1/2"2-1/2"2-1/2"1-1/2"1-1/2"9-1/4"10-1/2"10"8-1/2"8-1/4"24"14"DIMENSION TABLESIZE PIPEABCDMINEMAX2 1/2" THRU 36" PIPESEE NOTE 4ORPIPE SADDLESUPPORT ORFLANGEDSUPPORTPAINT SAMEAS PIPING1 1/2" GROUTSTD PIPE FLANGE, ATTACH TOCONC WITH 4 SS STUD TYPEWEDGE ANCHORSE BDAAS REQ'DC ORNOTES:1.PROVIDE HALF ROUND RIGID INSULATION AND INSULATION PROTECTIONSHIELD WHERE PIPING IS INSULATED2.PROVIDE NEOPRENE WAFFLE INSULATION PAD, SIMILAR TO MASON TYPE "W"OR KORFUND 40, UNDER SUPPORT FOOT WHEN PIPING IS ISOLATED ORSUPPORT IS ADJACENT TO MECHANICAL EQUIPMENT.3.FOR BASE, HEIGHT AND FLANGE DIMENSIONS, SEE TABLE4.USE 2 1/2" SUPPORTS FOR PIPES LESS THAN 2 1/2"ØSADDLE SUPPORTADJUSTABLEFLANGE SUPPORTADJUSTABLERESTRAINED SUPPORTADJUSTABLE WASHWATEREQUALIZATIONVALVE VAULT688'' WWR8'' WWR8'' WWR8'' WWR8'' WWR8'' WWR3'' FW3'' FWFLOC-SEDBASINBLOWERBUILDINGCAUSTICMIXINGFACILITYFILTERED WATERFLOW METER VAULTBACKWASHPUMP PADSHADY OAKS DRIVEWASHWATERRECOVERYBASIN69WASHWATEREQUALIZATION BASIN68FILTERCOMPLEXX" PDX" PDX" PDX" PD12" LAGOON DR24" PD18" RCP20" DR12" FM36" CMP12" FM 36" FW36" FW 30" PD 36" TW36" FWA B A N D O N E D 48" FW 30" FW 36" WWR 18" PD12" NCBW24" NCBW48" FW2" PSW1 1/2" CAUMH-610210110+0011+00 12+0013+0014+0018+04 14+0015+0016+0017+0018+00 05-C306205-C305118" GFW16" PD16" BWW/SWWTIE TO EXIST. MH-10REPLACE MANHOLE LIDWITH LOCKING WATERTIGHT FRAME AND COVERVALVE VAULTTO LAGOON105CUT IN NEW 24"PLUG VALVE V406(NON-ACTUATEDBURIED)CONTRACTORSHALL CONFIRMLINE SIZECONFIRM LOCATIONS OFEXISTING ELECTRICAL LINESAND COORDINATE ADJUSTMENTWITH ENGINEER AS NECESSARYSEE FACILITY 77MECHANICAL DRAWINGSFOR PIPING CONTINUATION10310411122" PSW2YARD PIPING COORDINATESPOINT #101102103NORTHING7122496.297122601.227122615.71EASTING2395148.612395148.612395026.73CENTERLINEELEVATION622.83622.44616.41DESCRIPTION16" 90° MJ BEND16" 90° MJ BEND18" RESTRAINED90° BENDYARD PIPING COORDINATESPOINT #104105111NORTHING7122496.297122575.337122499.42EASTING2395099.532395133.722395058.28CENTERLINEELEVATION622.00619.08620.55DESCRIPTION16" PLUG VALVEV40624" PLUG VALVEV40612" PLUG VALVEV405(IN FEET)020'40'60'10'DRAWN BY:DATE:JOB NO.:DESIGNED BY:REV.DATE DESCRIPTION BY BAR IS ONE INCH ONORIGINAL DRAWINGIF NOT ONE INCH ON THIS SHEET,ADJUST SCALES ACCORDINGLY.01"DRAWING NUMBERSHEET NUMBERMAY 201918088080THIS DOCUMENT, ALONG WITH THEIDEAS AND DESIGNS CONVEYEDHEREIN, SHALL BE CONSIDEREDINSTRUMENTS OF PROFESSIONALSERVICE AND ARE PROPERTY OFGARVER, LLC. ANY USE,REPRODUCTION, OR DISTRIBUTIONOF THIS DOCUMENT, ALONG WITHTHE IDEAS AND DESIGN CONTAINEDHEREIN, IS PROHIBITED UNLESSAUTHORIZED IN WRITING BYGARVER, LLC OR EXPLICITLYALLOWED IN THE GOVERNINGPROFESSIONAL SERVICESAGREEMENT FOR THIS WORK.© 2019 GARVER, LLCCITY OF DENTON DENTON, TEXAS LAKE LEWISVILLE WATER TREATMENT PLANT DEWATERING IMPROVEMENTS REGISTRATION NO.F-5713File: \\garverinc.local\gdata\Projects\2018\18088080 - Denton LLWTP Dewatering Design\Drawings\DLLWTP-05-C303-YP.dwg Last Save: 7/12/2019 3:37 PM Last saved by: OCCondulleLast plotted by: Condulle, O. C. Plot Style: ---- Plot Scale: 1:2.5849 Plot Date: 7/12/2019 3:39 PM Plotter used: None CDGO.C.05-C303019PROPOSED YARDPIPING PLAN I#PIPING LAYOUT COORDINATESNOTES:1.CONTRACTOR SHALL FIELD VERIFY ALL CONNECTION POINTS TO EXISTINGPIPES AND FACILITIES PRIOR TO LAYING NEW LINES.2.PIPING ELEVATIONS ARE FOR CONTRACTORS BENEFIT. CONTRACTORSHALL VERIFY ELEVATIONS IN FIELD.3.ALL PIPES SHALL BE LAID AT A CONSTANT SLOPE BETWEEN THEELEVATIONS GIVEN ON THESE PLANS. PIPELINES WITH NO ELEVATIONSGIVEN SHALL BE INSTALLED WITH MINIMUM 3' OF COVER OR AS REQUIREDTO AVOID CONFLICTS WITH EXISTING AND PROPOSED PIPING.4.ALL BURIED VALVES SHALL HAVE VALVE BOX AS SPECIFIED.5.CONTRACTOR SHALL INSTALL MJ SOLID SLEEVE AS NECESSARY TO MAKECONNECTIONS TO EXISTING LINES.6.THRUST AT FITTINGS SHALL BE RESISTED BY RESTRAINED JOINTS ASSPECIFIED AND AS REQUIRED TO RESIST THRUST. SEE7.SEE FOR PIPE TRENCH, BEDDING, AND BACKFILL DETAIL.8.SEE FOR CLEANOUT DETAIL.9.SEE FOR YARD HYDRANT DETAIL.2339-014D402339-004D402323-001D312339-012D4022 CDG07/12/19 ADDENDUM #2 NEW 12" AND 24" PLUG VALVE OZONEGENERATORBUILDINGLOXSTORAGEOZONECONTACTORSFLOC-SEDBASINMAINTENANCESHEDBLOWERBUILDINGSTORAGETANKBACKFLOWPREVENTERSHADY OAKS DRIVE18" SD12" PDMH-BSTA. 10+574' MANHOLEN = 7122481.35E = 2395751.50MH-ASTA. 10+134' MANHOLEN = 7122437.70E = 2395751.50SDMH-2STA. 10+244'X4' JUNCTION BOXN = 7122443.25E = 2395735.19SDMH-1STA. 10+004'X4' JUNCTION BOXN = 7122419.38E = 2395735.19EXIST. MH-3STA. 12+434' MANHOLEN = 7122565.41E = 2395611.45LIGHT POLE TOBE REMOVED21" NCBW DUCT BANKDUCT BANK18" SD12" NCBW18" PD12" PD 12" PD8" PD 20020120205-C305105-C307305-C3074MH-DSTA. 10+874' MANHOLEN = 7122593.18E = 2395699.86MH-FSTA. 12+574' MANHOLEN = 7122605.91E = 2395534.98MH-ESTA. 12+394' MANHOLEN = 7122593.18E = 2395547.7118" FESSTA. 11+22N = 7122443.25E = 2395833.7416" BWW/SWW05-C306220320418" GFWMH-HSTA. 10+78LOADING AREA DRAINN = 7122359.39E = 2395746.4512" PDGRAVITYTHICKENER70FUTUREGRAVITYTHICKENERDEWATERINGFACILITY77X X X X X X X X X X X X X X XXXTHICKENEDRESIDUALSPUMP STATION7510+00 11+0010+0011+0012+0010+0011+0012+0013+0014+0018+28 15+0016+0017+0018+0005-C307510+95 10+00 RELOCATE EXISTINGSTORM DRAIN AS SHOWN4900-001D33MH-CSTA. 11+584' MANHOLEN = 7122565.41E = 2395696.452" W1DUCT BANK205 2082072066" TR PIPING TO BELT FILTER PRESSES - SEE FACILITY75 DRAWINGS FOR PIPING CONTINUATION6" W1BACKFLOW PREVENTER0000-001D33ELECTRICAL DUCT BANKSEE ELECTRICAL PLANSMATCH PROPOSEDFENCING FOR LLWTPPHASE II IMPROVEMENTSADMINISTRATION AREA6" W226" PDCONCRETE ENCASE 6" TR PIPING UNDER SLABAND PROVIDE ACCESSIBLE CLEANOUTS.2YARD PIPING COORDINATESPOINT #200201202203204205206207208NORTHING7122601.227122588.187122588.187122548.617122393.707122498.247122483.317122483.317122498.24EASTING2395521.292395534.322395740.212395779.792395730.632395730.822395796.852395764.622395749.69CENTERLINEELEVATION630.38630.38630.38631.45637.33636.00636.00636.00636.00DESCRIPTION16" 45° MJ BEND16" 45° MJ BEND16" 45° MJ BEND16" 45° MJ BEND8"X2" MJ TEE8"X6" MJ TEE6" 90° MJ BEND6" 45° MJ BEND6" 45° MJ BEND(IN FEET)020'40'60'10'DRAWN BY:DATE:JOB NO.:DESIGNED BY:REV.DATE DESCRIPTION BY BAR IS ONE INCH ONORIGINAL DRAWINGIF NOT ONE INCH ON THIS SHEET,ADJUST SCALES ACCORDINGLY.01"DRAWING NUMBERSHEET NUMBERMAY 201918088080THIS DOCUMENT, ALONG WITH THEIDEAS AND DESIGNS CONVEYEDHEREIN, SHALL BE CONSIDEREDINSTRUMENTS OF PROFESSIONALSERVICE AND ARE PROPERTY OFGARVER, LLC. ANY USE,REPRODUCTION, OR DISTRIBUTIONOF THIS DOCUMENT, ALONG WITHTHE IDEAS AND DESIGN CONTAINEDHEREIN, IS PROHIBITED UNLESSAUTHORIZED IN WRITING BYGARVER, LLC OR EXPLICITLYALLOWED IN THE GOVERNINGPROFESSIONAL SERVICESAGREEMENT FOR THIS WORK.© 2019 GARVER, LLCCITY OF DENTON DENTON, TEXAS LAKE LEWISVILLE WATER TREATMENT PLANT DEWATERING IMPROVEMENTS REGISTRATION NO.F-5713File: \\garverinc.local\gdata\Projects\2018\18088080 - Denton LLWTP Dewatering Design\Drawings\DLLWTP-05-C304-YP.dwg Last Save: 7/12/2019 3:17 PM Last saved by: OCCondulleLast plotted by: Condulle, O. C. Plot Style: ---- Plot Scale: 1:2.5849 Plot Date: 7/15/2019 7:26 AM Plotter used: None CDGO.C.05-C304020PROPOSED YARDPIPING PLAN II#PIPING LAYOUT COORDINATESNOTES:1.CONTRACTOR SHALL FIELD VERIFY ALL CONNECTION POINTS TO EXISTINGPIPES AND FACILITIES PRIOR TO LAYING NEW LINES.2.PIPING ELEVATIONS ARE FOR CONTRACTORS BENEFIT. CONTRACTORSHALL VERIFY ELEVATIONS IN FIELD.3.ALL PIPES SHALL BE LAID AT A CONSTANT SLOPE BETWEEN THEELEVATIONS GIVEN ON THESE PLANS. PIPELINES WITH NO ELEVATIONSGIVEN SHALL BE INSTALLED WITH MINIMUM 3' OF COVER OR AS REQUIREDTO AVOID CONFLICTS WITH EXISTING AND PROPOSED PIPING.4.ALL BURIED VALVES SHALL HAVE VALVE BOX AS SPECIFIED.5.CONTRACTOR SHALL INSTALL MJ SOLID SLEEVE AS NECESSARY TO MAKECONNECTIONS TO EXISTING LINES.6.THRUST AT FITTINGS SHALL BE RESISTED BY RESTRAINED JOINTS ASSPECIFIED AND AS REQUIRED TO RESIST THRUST. SEE7.SEE FOR PIPE TRENCH, BEDDING, AND BACKFILL DETAIL.8.SEE FOR CLEANOUT DETAIL.9.SEE FOR YARD HYDRANT DETAIL.2339-014D402339-004D402323-001D312339-012D402 CDG07/12/19 ADDENDUM #2 - NEW 8" PLUG VALVE AND 6" TR NOTES PLC-BBPLCLEVELMCC/CPLEVELHMILEVELFROM MH7TO MH8 EXISTING WASHWATEREQUALIZATION BASINMTO LAGOONMMTO GRAVITYTHICKENER08-I701EXISTINGWASHWATERPUMP #168EQP01NEWWASHWATERPUMP #368EQP0368EQP04 EXISTING VALVEVAULTM68EQP02EXISTINGWASHWATERPUMP #2NEWWASHWATERPUMP #468LE631168LIT6311AILAL6311LI6311EQ BASINLOWLEVELEQ BASINLEVELLAH6311EQ BASINHI LEVELFVNRFVNR68EQCP02*CASCAS01EKIETMPUMP #3MOISTUREPUMP #3HI TEMPPUMP #3RUNNING01DHSPUMP #3O/O/A02EKIETMPUMP #4MOISTUREPUMP #4HI TEMPPUMP #4RUNNING02DHSPUMP #4O/O/AII01DHSPUMP #2H/O/A01DHSPUMP #1H/O/AFVNRCASIFVNRCASITO68EQ02TO68LCP01BWW/SWWBWW/SWWBWW/SWWSS - TO PCWRP**** PCWRP - PECAN CREEK WATER RECLAMATION PLANT68EQCP0168LSLL01A68LSL01B68LSM01C68LSH01D68LSHH01E PUMP #3OFFPUMP #4OFF 02HYL02GMAL02CYL02FTAL01HYL01GMAL01CYL01FTAL68LSLL02A68LSL02B68LSM02C68LSHH02EHI LEVEL ALARMDUTY PUMP ONPUMP OFFLOW LEVELSHUTOFFEXISTING WASHWATEREQUALIZATION BASINLEVEL TRANSMITTEREXISTING WASHWATEREQUALIZATION BASINLEVEL TRANSDUCER TOBE RELOCATED. SEESHEET 68-E131. NEW VALVE VAULTMSUMP PUMP68SUP0103AYLHI LEVELALARM* VENDER SUPPLIED AS PART OF EQUIPMENT PACKAGESTOP(MAINT.)03HS03BYLLO LEVELALARMDRAWN BY:DATE:JOB NO.:DESIGNED BY:REV.DATE DESCRIPTION BY BAR IS ONE INCH ONORIGINAL DRAWINGIF NOT ONE INCH ON THIS SHEET,ADJUST SCALES ACCORDINGLY.01"DRAWING NUMBERSHEET NUMBERMAY 201918088080THIS DOCUMENT, ALONG WITH THEIDEAS AND DESIGNS CONVEYEDHEREIN, SHALL BE CONSIDEREDINSTRUMENTS OF PROFESSIONALSERVICE AND ARE PROPERTY OFGARVER, LLC. ANY USE,REPRODUCTION, OR DISTRIBUTIONOF THIS DOCUMENT, ALONG WITHTHE IDEAS AND DESIGN CONTAINEDHEREIN, IS PROHIBITED UNLESSAUTHORIZED IN WRITING BYGARVER, LLC OR EXPLICITLYALLOWED IN THE GOVERNINGPROFESSIONAL SERVICESAGREEMENT FOR THIS WORK.© 2019 GARVER, LLCCITY OF DENTON DENTON, TEXAS LAKE LEWISVILLE WATER TREATMENT PLANT DEWATERING IMPROVEMENTS REGISTRATION NO.F-5713File: L:\2018\18088080 - Denton LLWTP Dewatering Design\Drawings\DLLWTP-08-I701-PI.dwg Last Save: 5/20/2019 7:13 AM Last saved by: SAHalseyLast plotted by: White, Jonathan C. Plot Style: AECmono.ctb Plot Scale: 1:0.4255 Plot Date: 7/15/2019 8:23 AM Plotter used: DWG To PDF.pc3 KECSAH08-I681025WASHWATEREQUALIZATION BASINP&ID1 7/12/19 ADDEN. #2 SAH1 Digitally Signed 07/15/2019 33' - 0" 75P03 THICKENED RESIDUAL FEED PUMP 75P02 75P04 CLCLCLCL9' - 6"6' - 6"2' - 0"2' - 6"2' - 0"6' - 6"4' - 0" 75-M131 75-M301 2 75-M131 75-M301 2 TO BELT PRESS #1 TO BELT PRESS #2 TO FUTURE BELT PRESS #3 FROM GRAVITY THICKENER SEE NOTE 2 FROM FUTURE GRAVITY THICKENER 75-M131 75-M301 1 75-M131 75-M301 1 75P01 ADJUSTABLE FLOOR MOUNTED PIPE SUPPORT AS REQUIRED, (TYP). SEE DETAIL D22 0529-001 6" PLUG VALVE W/ MOTORIZED OPERATOR (TYP OF 8) 6" TR PLUG VALVE (TYP OF 4) 6" TR CL19' - 9"2' - 11"FUTURE VICTAULIC SWEEPING TEE, (TYP OF 2) THICKENED RESIDUAL FEED PUMP FUTURE THICKENED RESIDUAL FEED PUMP THICKENED RESIDUAL FEED PUMP 6" TR FUTURE FUTURE 6" PLUG VALVE (TYP OF 3) 6" TR FUTURE 1' - 0"2' - 6"1' - 2"VICTAULIC SWEEPING TEE, TYP 1' - 0" 1' - 0" VICTAULIC SWEEPING TEE W/ FLUSHING CONNECTION FUTURE VICTAULIC LONG RADIUS ELBOW FUTURE ADJUSTABLE FLOOR MOUNTED PIPE SUPPORT AS REQUIRED, (TYP). D40 2400-014 FUTURE FLUSHING CONNECTION VICTAULIC SWEEPING TEE NOTES: 1. UNDERGROUND PIPING TO BE INSTALLED DURING LAKE LEWISVILLE WTP DEWATERING IMPROVEMENTS PROJECT. INSTALL BLIND FLANGE WHEN PIPING EMERGES FROM GROUND. 2. PROVIDE 8" BURIED V405 IN YARD PIPING BETWEEN PUMP STATION AND GRAVITY THICKENER SEE NOTE 1 BOLLARD (TYP) SEE DETAIL D32 0000-009 FOR CONT. SEE CIVIL SHEETS 8" TR FLUSHING CONNECTION SEE DETAIL D40 2400-015 FLUSHING CONNECTION SEE DETAIL D40 2400-015 VICTAULIC SWEEPING TEE W/ FLUSHING CONNECTION VICTAULIC 8x8 CROSS W/ FLUSHING CONNECTION 1 Revit File:Plot Date:DRAWN BY: DATE: JOB NO.: DESIGNED BY: BAR IS ONE INCH ON ORIGINAL DRAWING IF NOT ONE INCH ON THIS SHEET, ADJUST SCALES ACCORDINGLY. 0 1" DRAWING NUMBER SHEET NUMBER © 2019 GARVER, LLC THIS DOCUMENT, ALONG WITH THE IDEAS AND DESIGNS CONVEYED HEREIN, SHALL BE CONSIDERED INSTRUMENTS OF PROFESSIONAL SERVICE AND ARE PROPERTY OF GARVER, LLC. ANY USE, REPRODUCTION, OR DISTRIBUTION OF THIS DOCUMENT, ALONG WITH THE IDEAS AND DESIGN CONTAINED HEREIN, IS PROHIBITED UNLESS AUTHORIZED IN WRITING BY GARVER, LLC OR EXPLICITLY ALLOWED IN THE GOVERNING PROFESSIONAL SERVICES AGREEMENT FOR THIS WORK. REGISTRATION NO. F-5713 D:\My Revit Projects 2019\DLLWTP_sconrad77.rvt7/15/2019 8:40:41 AMCITY OF DENTONLAKE LEWISVILLEWATER TREATMENT PLANTDEWATERING IMPROVEMENTSDENTON, TX18088080 MAY 2019 KOB SAC PROCESS MECHANICAL PLAN 75-M131 057 SCALE: PROJECT NORTH 3/8" = 1'-0"75-M131 1 THICKENED RESIDUALS PUMP STATION - PROCESS MECHANICAL PLAN REVDATEDESCRIPTIONBY17/12/19ADDENDUM #2RDT1 1 Digitally Signed 07/15/2019 77-M131 77-M301 1 77-M131 77-M301 1 77-M131 77-M301 2 77-M131 77-M301 2 77-M131 77-M302 1 77-M131 77-M302 1 DUMPSTER CONVEYANCE SYSTEM (TYP OF 2) INCLINE SCREW CONVEYOR DUMPSTER TYP OF 2 BFP HYDRAULIC UNITFUTURE BFP HYDRAULIC UNIT FUTURE BELT FILTER PRESS 77-M132 1 77-M131 77-M131 77-M302 2 77-M131 77-M302 2 77BFP0277BFP03 GANTRY CRANE BELT FILTER PRESS 77HU01 77HU02 77HU03 BFP HYDRAULIC UNIT POLYMER INJECTION POLYMER INJECTION 3' - 8"37' - 9 1/2" FROM TRP #3 FROM TRP #1 FROM TRP #2 77SC01 HORIZONTAL SCREW CONVEYOR INCLINE SCREW CONVEYOR 77SC02 CL 7' - 1"CL10' - 1"77-M131 77-M303 1 77-M131 77-M303 1 3829 SF DEWATERING ROOM 100 547 SF ELECTRICAL ROOM 101 CL CL 36' - 10"18' - 8"24' - 6"CLCL9' - 7"10' - 5"EYEWASH AND SAFETY SHOWER POLYMER INJECTION BELT FILTER PRESS 77SC03 77BFP01 77G01 SLIDE GATE 6" W2 SEE SITE CIVIL FOR CONTINUATION INSTALL 120 V, 15' LIFT, EXTRA POWER CHORD 1 SPEED SINGLE PHASE- YALE 1/2 TON ELECTRIC CHAIN HOIST WITH GANTRY CRANE Revit File:Plot Date:DRAWN BY: DATE: JOB NO.: DESIGNED BY: BAR IS ONE INCH ON ORIGINAL DRAWING IF NOT ONE INCH ON THIS SHEET, ADJUST SCALES ACCORDINGLY. 0 1" DRAWING NUMBER SHEET NUMBER © 2019 GARVER, LLC THIS DOCUMENT, ALONG WITH THE IDEAS AND DESIGNS CONVEYED HEREIN, SHALL BE CONSIDERED INSTRUMENTS OF PROFESSIONAL SERVICE AND ARE PROPERTY OF GARVER, LLC. ANY USE, REPRODUCTION, OR DISTRIBUTION OF THIS DOCUMENT, ALONG WITH THE IDEAS AND DESIGN CONTAINED HEREIN, IS PROHIBITED UNLESS AUTHORIZED IN WRITING BY GARVER, LLC OR EXPLICITLY ALLOWED IN THE GOVERNING PROFESSIONAL SERVICES AGREEMENT FOR THIS WORK. REGISTRATION NO. F-5713 D:\My Revit Projects 2019\DLLWTP_sconrad77.rvt7/15/2019 8:40:47 AMCITY OF DENTONLAKE LEWISVILLEWATER TREATMENT PLANTDEWATERING IMPROVEMENTSDENTON, TX18088080 MAY 2019 KOB SAC PROCESS MECHANICAL PLAN 77-M131 088 SCALE: PROJECT NORTH 3/16" = 1'-0"77-M131 1 PROCESS MECHANICAL PLAN REVDATEDESCRIPTIONBY17/12/19ADDENDUM #2RDT1 Digitally Signed 07/15/2019 LSYSTEM C LSYSTEM CT/SLAB EL. 640.50 T/WALL EL. 660.50 BELT FILTER PRESS INCLINE SCREW CONVEYOR INCLINE SCREW CONVEYOR BFP HYDRAULIC UNIT77HU01 77C02 77C01 CONVEYOR SYSTEM CONVEYOR SYSTEM 77SC02 CL 10' - 1" CL10' - 10" 77SC03 GANTRY CRANE 7' - 2"2' - 4 1/16" 6" TR 6" TR HORIZONTAL SCREW CONVEYOR 77SC01 3829 SF DEWATERING ROOM 100 77BFP01 12" PD 4" PD T/SLAB EL. 640.50 T/WALL EL. 660.50 INCLINE SCREW CONVEYOR BELT FILTER PRESS GANTRY CRANE FUTURE BELT FILTER PRESS POLYMER TOTES (TYP OF 4) 77BFP03 77BFP02 BELT FILTER PRESS INCLINE SCREW CONVEYOR 77SC02 77SC01 HORIZONTAL SCREW CONVEYOR FROM THICKENED RESIDUAL PUMP STATION POLYMER BLEND UNIT 77PLY01 77SC03 6" TR 6" TR 6" TR 6" TR 6" TR 547 SF ELECTRICAL ROOM 101 3829 SF DEWATERING ROOM 100 77BFP01 EL. 632.65 30°1 1/2"1 1/2" W2W2 1 1/2"1 1/2"1 1 Revit File:Plot Date:DRAWN BY: DATE: JOB NO.: DESIGNED BY: BAR IS ONE INCH ON ORIGINAL DRAWING IF NOT ONE INCH ON THIS SHEET, ADJUST SCALES ACCORDINGLY. 0 1" DRAWING NUMBER SHEET NUMBER © 2019 GARVER, LLC THIS DOCUMENT, ALONG WITH THE IDEAS AND DESIGNS CONVEYED HEREIN, SHALL BE CONSIDERED INSTRUMENTS OF PROFESSIONAL SERVICE AND ARE PROPERTY OF GARVER, LLC. ANY USE, REPRODUCTION, OR DISTRIBUTION OF THIS DOCUMENT, ALONG WITH THE IDEAS AND DESIGN CONTAINED HEREIN, IS PROHIBITED UNLESS AUTHORIZED IN WRITING BY GARVER, LLC OR EXPLICITLY ALLOWED IN THE GOVERNING PROFESSIONAL SERVICES AGREEMENT FOR THIS WORK. REGISTRATION NO. F-5713 D:\My Revit Projects 2019\DLLWTP_sconrad77.rvt7/15/2019 9:02:01 AMCITY OF DENTONLAKE LEWISVILLEWATER TREATMENT PLANTDEWATERING IMPROVEMENTSDENTON, TX18088080 MAY 2019 KOB GJE PROCESS MECHANICAL SECTIONS I 77-M301 095 SCALE:1/4" = 1'-0"77-M131 77-M301 1 SECTION SCALE:1/4" = 1'-0"77-M131 77-M301 2 SECTION REVDATEDESCRIPTIONBY17/12/19ADDENDUM #2RDT1 1 1 1 Digitally Signed 07/15/2019 LSYSTEM CLSYSTEM C T/SLAB EL. 640.50 T/WALL EL. 660.50 77BFP02 77BFP03 BELT FILTER PRESS FUTURE BELT FILTER PRESS POLYMER TOTES (TYP OF 4) FROM THICKENED RESIDUALS PUMP STATION HYDRO- PNEUMATIC TANK BOOSTER PUMP SYSTEM INCLINE SCREW CONVEYOR CL7' - 1" 77SC02 INCLINE SCREW CONVEYOR HORIZONTAL SCREW CONVEYOR 77SC01 GANTRY CRANE BELT FILTER PRESS 6" TR 6" TR 6" TR 6" TR 6" TR 77TNK01 FUTURE POLYMER BLEND UNIT 77SC03 T/DRILLED SHAFT EL. 637.50 77BFP01 T/SLAB EL. 640.50 T/WALL EL. 660.50 INCLINE SCREW CONVEYOR 77G01 CL 10' - 10" HORIZONTAL SCREW CONVEYOR SLIDE GATE CONVEYOR SYSTEM CONVEYOR SYSTEM 77C0277C01 77SC02 CL10' - 1" 77SC03 GANTRY CRANE BELT FILTER PRESSBFP HYDRAULIC UNIT 77HU01 POLYMER INJECTION 8' - 2"CL 6" TR T/DRILLED SHAFT EL. 637.50 3829 SF DEWATERING ROOM 100 POLYMER INJECTION 77BFP01 12" PD 4" PD Revit File:Plot Date:DRAWN BY: DATE: JOB NO.: DESIGNED BY: BAR IS ONE INCH ON ORIGINAL DRAWING IF NOT ONE INCH ON THIS SHEET, ADJUST SCALES ACCORDINGLY. 0 1" DRAWING NUMBER SHEET NUMBER © 2019 GARVER, LLC THIS DOCUMENT, ALONG WITH THE IDEAS AND DESIGNS CONVEYED HEREIN, SHALL BE CONSIDERED INSTRUMENTS OF PROFESSIONAL SERVICE AND ARE PROPERTY OF GARVER, LLC. ANY USE, REPRODUCTION, OR DISTRIBUTION OF THIS DOCUMENT, ALONG WITH THE IDEAS AND DESIGN CONTAINED HEREIN, IS PROHIBITED UNLESS AUTHORIZED IN WRITING BY GARVER, LLC OR EXPLICITLY ALLOWED IN THE GOVERNING PROFESSIONAL SERVICES AGREEMENT FOR THIS WORK. REGISTRATION NO. F-5713 D:\My Revit Projects 2019\DLLWTP_sconrad77.rvt7/15/2019 8:41:02 AMCITY OF DENTONLAKE LEWISVILLEWATER TREATMENT PLANTDEWATERING IMPROVEMENTSDENTON, TX18088080 MAY 2019 KOB GJE PROCESS MECHANICAL SECTIONS II 77-M302 096 SCALE:1/4" = 1'-0"77-M131 77-M302 2 SECTION SCALE:1/4" = 1'-0"77-M131 77-M302 1 SECTION REVDATEDESCRIPTIONBY17/12/19ADDENDUM #2RDT1 1 Digitally Signed 07/15/2019 77PLY01 77PLY02 POLYMER BLEND UNIT (TYP) FUTURE POLYMER BLEND UNIT 77PLY03 POLYMER TOTES (TYP OF 4) SCALETRON SCALE (TYP OF 2) BOOSTER PUMP SYSTEM HYDRO- PNEUMATIC TANK BELT FILTER PRESS (TYP) 77BFP02 GANTRY CRANE 77BFP01 HORIZONTAL SCREW CONVEYOR 77SC01 77SC02 INCLINE SCREW CONVEYOR 77HU01 BFP HYDRAULIC UNIT (TYP) 77HU02 INCLINE SCREW CONVEYOR 77SC03 Revit File:Plot Date:DRAWN BY: DATE: JOB NO.: DESIGNED BY: BAR IS ONE INCH ON ORIGINAL DRAWING IF NOT ONE INCH ON THIS SHEET, ADJUST SCALES ACCORDINGLY. 0 1" DRAWING NUMBER SHEET NUMBER © 2019 GARVER, LLC THIS DOCUMENT, ALONG WITH THE IDEAS AND DESIGNS CONVEYED HEREIN, SHALL BE CONSIDERED INSTRUMENTS OF PROFESSIONAL SERVICE AND ARE PROPERTY OF GARVER, LLC. ANY USE, REPRODUCTION, OR DISTRIBUTION OF THIS DOCUMENT, ALONG WITH THE IDEAS AND DESIGN CONTAINED HEREIN, IS PROHIBITED UNLESS AUTHORIZED IN WRITING BY GARVER, LLC OR EXPLICITLY ALLOWED IN THE GOVERNING PROFESSIONAL SERVICES AGREEMENT FOR THIS WORK. REGISTRATION NO. F-5713 D:\My Revit Projects 2019\DLLWTP_sconrad77.rvt7/15/2019 8:41:21 AMCITY OF DENTONLAKE LEWISVILLEWATER TREATMENT PLANTDEWATERING IMPROVEMENTSDENTON, TX18088080 MAY 2019 KOB EGB ISOMETRIC VIEW DETAILS 77-M902 099 SCALE:NONE77-M902 3 ISOMETRIC VIEW DETAIL - CHEMICAL FEED SYSTEM SCALE:NONE77-M902 2 ISOMETRIC VIEW DETAIL - BELT FILTER PRESS SCALE:NONE77-M902 1 ISOMETRIC VIEW DETAIL - SCREW CONVEYORS REVDATEDESCRIPTIONBY17/12/19ADDENDUM #2RDT1 1 Digitally Signed 07/15/2019 GENERAL NOTES:1.THE CONTRACTOR SHALL FURNISH AND INSTALL ALL CONDUIT, WIRING, CONTROLENCLOSURES AND OTHER ITEMS AS NECESSARY FOR A COMPLETE AND FUNCTIONALDEWATER FACILITY ELECTRICAL SYSTEM. CONTRACTOR SHALL REFER TO THESPECIFICATIONS AND OTHER SECTIONS OF THE PLANS FOR ITEMS AS MAY BE REQUIRED.2.UNLESS OTHERWISE NOTED, ALL CONDUIT SHALL BE ROUTED EXPOSED. ALL CONDUITAND PORTIONS OF THE CONDUIT SYSTEM FOR THIS STRUCTURE SHALL BE SURFACEMOUNTED AND THE CONDUIT SYSTEM SHALL BE GALVANIZED RIGID STEEL. ALL BOXES,SUPPORTS, HANGERS, AND UNISTRUT AND ALL OTHER PORTIONS OF THE CONDUITSYSTEM SHALL BE GALVANIZED OR STAINLESS STEEL.3.VERIFY LOCATION OF ALL EQUIPMENT PRIOR TO INSTALLATION.4.ALL POWER CIRCUITRY SHALL BE A MINIMUM 2-#12, #12 GND, 3/4" C, UNLESS OTHERWISENOTED. FOR POWER CIRCUITS GREATER THAN 100' PROVIDE 2-#10, #10 GND, 3/4"C.5.ALL OUTDOOR RECEPTACLES TO BE GGCI WITH IN-USE WEATHERPROOF COVERS.1120VAC POWER FROM 77LP01 FOR DEDICATED POLYMER FEED RECEPTACLE.CAMERAS AND REQUIRED CONDUCTORS FROM CAMERA LOCATION TONETWORK CABINET TO BE FURNISHED AND INSTALLED BY SUB CONTRACTORS.ELECTRICAL CONTRACTOR TO PROVIDE GANG BOXES AND CONDUIT FROMCAMERA LOCATIONS TO NETWORK CABINET. CONTRACTOR SHALLCOORDINATE GANG BOX AND CONDUIT SIZES, AND LOCATIONS OF CAMERAS,WITH OWNER, ENGINEER AND SITE SECURITY SUBCONTRACTOR PRIOR TOCONSTRUCTION.FURNISH AND INSTALL NETWORK CABINET FOR INSTALLATION OF FIBER PATCHPANEL, SCADA WORKSTATION COMPUTER, UPS, AND NETWORK SYSTEM.KEY PAD, DOOR SECURITY SYSTEM, CONDUCTORS AND CONNECTIONS FROMENTRY LOCATION TO ACCESS CONTROL EQUIPMENT TO BE FURNISHED ANDINSTALLED AS DEFINED IN THE SPECIFICATIONS. ELECTRICAL CONTRACTORTO PROVIDE GANG BOXES, CONDUIT AND PULL CONDUCTORS (CONDUCTORSSUPPLIED BY OTHERS) FROM ENTRY LOCATIONS TO ACCESS CONTROLPANELS. ALL CONNECTIONS TO SECURITY EQUIPMENT TO BE PERFORMED BYOTHERS. CONTRACTOR SHALL COORDINATE GANG BOX AND CONDUIT SIZES,AND LOCATIONS OF ENTRY ACCESS EQUIPMENT, WITH OWNER, ENGINEER ANDSITE SECURITY SUBCONTRACTOR PRIOR TO CONSTRUCTION.CONDUIT LAYOUT SHOWN IS TYPICAL. CONTRACTOR SHALL COORDINATE WITHSITE SECURITY SUBCONTRACTOR FOR ACTUAL CONDUIT SIZES, LAYOUT ANDINSTALLATION REQUIREMENTS.DOOR ENTRY SWITCH, DOOR SECURITY SYSTEM, CONDUCTORS ANDCONNECTIONS FROM ENTRY LOCATION TO ACCESS CONTROL EQUIPMENT TOBE FURNISHED AND INSTALLED AS DEFINED IN THE SPECIFICATIONS.ELECTRICAL CONTRACTOR TO PROVIDE GANG BOXES, CONDUIT AND PULLCONDUCTORS (CONDUCTORS SUPPLIED BY OTHERS) FROM ENTRY LOCATIONSTO ACCESS CONTROL PANELS. ALL CONNECTIONS TO SECURITY EQUIPMENTTO BE PERFORMED BY OTHERS. CONTRACTOR SHALL COORDINATE GANG BOXAND CONDUIT SIZES, AND LOCATIONS OF ENTRY ACCESS EQUIPMENT, WITHOWNER, ENGINEER AND SITE SECURITY SUBCONTRACTOR PRIOR TOCONSTRUCTION.(2-#12, #12 GND) 3/4" C, 120VAC POWER FROM 77LP01.(ETHERNET CABLE) 1"C, COMMUNICATION TO NETWORK CABINET.KEYED NOTES:77PLY03POLYMER SKID(FUTURE)77PLY02POLYMER SKID77PLY01POLYMER SKIDSCALE:PROJECTNORTH316" = 1'-0"177-E132DEWATERING FACILITY POWER PLAN CONT.77LP01-0677LP01-0477LP01-0211177LP01-0877LP01-1077LP01-1477LP01-1677LP01-1877LP01LIGHT PANELPROVIDE RECEPTACLE ONELEVATED WALKWAY22232222232COORDINATE LOCATION OF ALLCAMERAS WITH OWNER ANDSECURITY SUB CONTRACTOR PRIORTO CONSTRUCTION.4424466477-E1323TO ACCESSCONTROLPANELFSBOXCONDUITLBOUTSIDEBUILDINGINSIDEBUILDINGOPEN ENDEDCONDUITDOORHARDWARESCALE:NONE277-E132TYPICAL DOOR SECURITY CONDUITSCALE:NONE377-E132TYPICAL KEYPAD CONDUIT555678728ACCESS CONTROL PANELSPROVIDED BY OTHERS.78DRAWN BY:DATE:JOB NO.:DESIGNED BY:REV.DATE DESCRIPTION BY BAR IS ONE INCH ONORIGINAL DRAWINGIF NOT ONE INCH ON THIS SHEET,ADJUST SCALES ACCORDINGLY.01"DRAWING NUMBERSHEET NUMBERMAY 201918088080THIS DOCUMENT, ALONG WITH THEIDEAS AND DESIGNS CONVEYEDHEREIN, SHALL BE CONSIDEREDINSTRUMENTS OF PROFESSIONALSERVICE AND ARE PROPERTY OFGARVER, LLC. ANY USE,REPRODUCTION, OR DISTRIBUTIONOF THIS DOCUMENT, ALONG WITHTHE IDEAS AND DESIGN CONTAINEDHEREIN, IS PROHIBITED UNLESSAUTHORIZED IN WRITING BYGARVER, LLC OR EXPLICITLYALLOWED IN THE GOVERNINGPROFESSIONAL SERVICESAGREEMENT FOR THIS WORK.© 2019 GARVER, LLCCITY OF DENTON DENTON, TEXAS LAKE LEWISVILLE WATER TREATMENT PLANT DEWATERING IMPROVEMENTS REGISTRATION NO.F-5713File: L:\2018\18088080 - Denton LLWTP Dewatering Design\Drawings\DLLWTP-77-E132-PP.dwg Last Save: 7/12/2019 3:42 PM Last saved by: SAHalseyLast plotted by: Halsey, Scott A. Plot Style: AECmono.ctb Plot Scale: 1:0.4255 Plot Date: 7/12/2019 3:42 PM Plotter used: DWG To PDF.pc3 SAHSAH77-E132101DEWATERINGFACILITY ELECTRICALPOWER PLAN CONT.1 7/12/19 ADDEN. #2 SAH1 11Digitally Signed 07/15/2019 23456KEYED NOTES:PROVIDE FIXTURE WITH SELF DIAGNOSTICS.PROVIDE FIXTURE LISTED AND LABELED FOR DAMP LOCATION.90 MINUTE EMERGENCY OPERATION REQUIRED WHERE INDICATED IN PLAN.1PROVIDE FIXTURE LISTED AND LABELED FOR WET LOCATION.PROVIDE FIXTURE WITH UNIVERSAL MOUNTING HARDWARE. INSTALLFIXTURE FOR WALL MOUNTING ONLY. PROVIDE FIXTURE WITH SINGLE ORDOUBLE FACE AS INDICATED. PROVIDE ARROWS IF AND AS SHOWN.PROVIDE FIXTURE WITH PENDANT STEMS OF LENGTH TO ACCOMPLISHINDICATED MOUNTING HEIGHT ON PLAN SHEETS.1.GENERAL NOTES:LAMP COLOR TEMPERATURE SHALL BE 4000K.LIGHT FIXTURE SCHEDULEMARKMANUFACTURERCATALOG NUMBERDESCRIPTIONLAMPSVOLTAGEMOUNTINGREMARKSACLITHONIALITHONIAFEM-L48-3000LM-IMAFL-MD-120-GZ10-40K-80CRI-BSL520SUSPENDED OR CEILING MOUNT LEDLUMINAIRE, SUITABLE FOR DAMPLOCATIONS.LED - 3000 LUMENSLED-7182 LUMENS120V120VREFER TO PLAN SHEETS FOR MOUNTINGLOCATION AND HEIGHTS.WALL MOUNTED. REFER TO PLANSHEETS.23 WATTS PER FIXTURESIZE4'Lx8"Wx5"DBLITHONIALED - 2189 LUMENS120VWALL MOUNTED. MOUNTING HEIGHTSVARY. REFER TO PLAN SHEETS. CENTEROVER DOOR IF APPLICABLE.7"Hx18"Wx9"DWSR LED-P1-40K-SR4-120-PE-E10WH-DDBXDDSXW1LED-20C-1000-40K-TFTM-120-PE-BSW-DDBXD WET LOCATION WALL MOUNTEDDOWNLIGHTWET LOCATION WALL MOUNTED AREA LIGHT6"Hx13"Wx10"D24 WATTS PER FIXTURE74 WATTS PER FIXTURE6116120VPLITHONIA8"Hx14"Wx11.5"D140 WATTS PER FIXTUREDSXWPMLED-10C-1000-40K-T2S-120-SPUMBA-PE-BSW-DDBXDPOLE MOUNTED AREA LIGHT WITH PHOTO CELLLED-3685 LUMENSSQUARE STRAIGHT ALUMINUM POLE-12'BSL-SSA-12-D-4-4-BM BIG SHINE LED ORAPPROVED EQUAL, WITH HINGED BASE .25120VP1LITHONIA174 WATTS PER FIXTURELED-7205 LUMENSSQUARE STRAIGHT ALUMINUM POLE-15'BSL-SSA-15-D-4-4-BM BIG SHINE LED ORAPPROVED EQUAL, WITH HINGED BASE .DLITHONIASUSPENDED OR CEILING MOUNT LEDLUMINAIRE, SUITABLE FOR DAMPLOCATIONS.LED - 6000 LUMENS120VREFER TO PLAN SHEETS FOR MOUNTINGLOCATION AND HEIGHTS.45 WATTS PER FIXTURE4'Lx8"Wx5"D625LITHONIALEDINCLUDED120VPROVIDE BRACKET MOUNT, END MOUNTOR BACK MOUNT BRACKETS ASREQUIRED. DO NOT SWITCH.LQM-S-W-3-120/277-EL N-SDEXIT LIGHT COMPLETE WITH BATTERYAND CHARGER8"Hx12"Wx2"D3410 WATTS PER FIXTUREXDSXWPMLED-20C-1000-40K-T2S-120-SPUMBA-PE-BSW-DDBXDPOLE MOUNTED AREA LIGHT WITH PHOTO CELL8"Hx14"Wx11.5"DFEM-L48-6000LM-IMAFL-MD-120-GZ10-40K-80CRI-BSL520SCALE:NONE290-E60177LP01 PANEL SCHEDULESCALE:NONE190-E601LIGHT FIXTURE SCHEDULEDRAWN BY:DATE:JOB NO.:DESIGNED BY:REV.DATE DESCRIPTION BY BAR IS ONE INCH ONORIGINAL DRAWINGIF NOT ONE INCH ON THIS SHEET,ADJUST SCALES ACCORDINGLY.01"DRAWING NUMBERSHEET NUMBERMAY 201918088080THIS DOCUMENT, ALONG WITH THEIDEAS AND DESIGNS CONVEYEDHEREIN, SHALL BE CONSIDEREDINSTRUMENTS OF PROFESSIONALSERVICE AND ARE PROPERTY OFGARVER, LLC. ANY USE,REPRODUCTION, OR DISTRIBUTIONOF THIS DOCUMENT, ALONG WITHTHE IDEAS AND DESIGN CONTAINEDHEREIN, IS PROHIBITED UNLESSAUTHORIZED IN WRITING BYGARVER, LLC OR EXPLICITLYALLOWED IN THE GOVERNINGPROFESSIONAL SERVICESAGREEMENT FOR THIS WORK.© 2019 GARVER, LLCCITY OF DENTON DENTON, TEXAS LAKE LEWISVILLE WATER TREATMENT PLANT DEWATERING IMPROVEMENTS REGISTRATION NO.F-5713File: L:\2018\18088080 - Denton LLWTP Dewatering Design\Drawings\DLLWTP-90-E601-SC.dwg Last Save: 7/12/2019 3:41 PM Last saved by: SAHalseyLast plotted by: Halsey, Scott A. Plot Style: AECmono.ctb Plot Scale: 1:0.4255 Plot Date: 7/12/2019 3:42 PM Plotter used: DWG To PDF.pc3 SAHSAH90-E601109LIGHT FIXTURE ANDLIGHT PANELSCHEDULES1 7/12/19 ADDEN. #2 SAH1 Digitally Signed 07/15/2019 SCALE:NONE190-T101SCADA SYSTEM ARCHITECTURE DIAGRAMETHERNET COPPERCONTROL PANEL/ENCLOSUREETHERNET FIBER1. EXISTING INSTALLATION HARDWARE AND LINE TYPES ARE LIGHT/FADED. PROPOSED NEWHARDWARE AND LINE TYPES ARE DARK/BOLD.2.SEE SPECIFICATION 26 09 43 FOR FIBER OPTIC NETWORK SPECIFICATIONS.*MANUFACTURER SUPPLIED AS PARTOF AN EQUIPMENT PACKAGENOTES:LINE TYPES: PLC CONTROL PANEL 77PLCCP01DEWATERING BUILDING - 77 PLC77PLC01 EXISTING ADMIN BLDG EXISTING WTP SCADA NETWORK PANELEXISTING SCADASYSTEM (SCADA OFFICE) FIBER PATCHPANELETHERNETSWITCHMAKE ALL REQUIRED MODIFICATIONS TO EXISTING WTP CONTROL PANEL TO INSTALL NEW FIBER OPTICETHERNET COMPONENTS AND MAKE ALL REQUIRED CONNECTIONS . COORDINATE ALL EXISTINGEQUIPMENT RELOCATION AND NEW EQUIPMENT INSTALLATION LOCATIONS WITH OWNER PRIOR TOINSTALLATION. MAKE ALL FINAL CONNECTIONS OF NEW EQUIPMENT ACCORDING TO MANUFACTURER'SINSTALLATION INSTRUCTIONS.FURNISH AND INSTALL NETWORK CABINET FOR INSTALLATION OF FIBER PATCH PANEL, SCADAWORKSTATION COMPUTER, UPS, AND NETWORK SWITCH.PROVIDE A NEW WORKSTATION SCADA PC MOUNTED IN THE NETWORK CABINET. THE WORKSTATION SHALLBE CONFIGURED WITH THE SAME WINDOWS AND SCADA HMI SOFTWARE CURRENTLY INSTALLED ON THEPLANT'S EXISTING SCADA CLIENT WORKSTATION PCs. CONTRACTOR IS RESPONSIBLE FOR ALL COSTSASSOCIATED WITH THE SCADA WORKSTATION HARDWARE AND SOFTWARE.KEY NOTES:11FIBER OPTICSCADA NETWORK BELT PRESS 1 CONTROL PANEL77BPCP01* PLC 77BPPLC01*SCADA MONITOROIT*ETHERNETSWITCH*BELT PRESS 2 CONTROL PANEL77BPCP02* PLC 77BPPLC02*OIT*ETHERNETSWITCH*BELT PRESS 3 CONTROL PANEL77BPCP03*(FUTURE) PLC 77BPPLC03*OIT*ETHERNETSWITCH*AREA/BUILDING BOUNDARYDUMPSTER CONVEYOR CONTROL PANEL77DCP01*DUMPSTER CONVEYOR CONTROL PANEL77DCP02*BOOSTER PUMP SKID 77PWDS01* PLC 77PWDSPLC01*OIT*ETHERNETSWITCH*NETWORK CABINET22FIBER PATCH PANELNETWORK SWITCHSCADA PCHDMIUPS33DUMPSTERCONTROLLERDUMPSTERCONTROLLERKVM STATIONACCESS PANEL #1*ACCESS PANEL #2*DRAWN BY:DATE:JOB NO.:DESIGNED BY:REV.DATE DESCRIPTION BY BAR IS ONE INCH ONORIGINAL DRAWINGIF NOT ONE INCH ON THIS SHEET,ADJUST SCALES ACCORDINGLY.01"DRAWING NUMBERSHEET NUMBERMAY 201918088080THIS DOCUMENT, ALONG WITH THEIDEAS AND DESIGNS CONVEYEDHEREIN, SHALL BE CONSIDEREDINSTRUMENTS OF PROFESSIONALSERVICE AND ARE PROPERTY OFGARVER, LLC. ANY USE,REPRODUCTION, OR DISTRIBUTIONOF THIS DOCUMENT, ALONG WITHTHE IDEAS AND DESIGN CONTAINEDHEREIN, IS PROHIBITED UNLESSAUTHORIZED IN WRITING BYGARVER, LLC OR EXPLICITLYALLOWED IN THE GOVERNINGPROFESSIONAL SERVICESAGREEMENT FOR THIS WORK.© 2019 GARVER, LLCCITY OF DENTON DENTON, TEXAS LAKE LEWISVILLE WATER TREATMENT PLANT DEWATERING IMPROVEMENTS REGISTRATION NO.F-5713File: L:\2018\18088080 - Denton LLWTP Dewatering Design\Drawings\DLLWTP-90-E801-OL.dwg Last Save: 7/12/2019 3:40 PM Last saved by: SAHalseyLast plotted by: Halsey, Scott A. Plot Style: AECmono.ctb Plot Scale: 1:0.4255 Plot Date: 7/12/2019 3:42 PM Plotter used: DWG To PDF.pc3 SAHSAH90-T901116SCADAARCHITECTUREDIAGRAM11 7/12/19 ADDEN. #2 SAH Digitally Signed 07/15/2019