Appendix_A_-_Scope_of_Work_-_260708.pdf

APPENDIX A – Scope of Work – 260708

Table of Contents APPENDIX A – Scope of Work – 260708

1.0 SCOPE OF WORK

1.1 GENERAL

1.2 DESIGN AND PERMITTING

1.3 CONSTRUCTION

1.4 TESTING AND STARTUP

1.5 PROJECT CLOSEOUT

1.6 MATERIALS AND EQUIPMENT

1.7 CONTROLS

MWWTP Effluent FM Surge & Transient Design Build Services (UN 1282) ITB #27-002

1.0 SCOPE OF WORK

The project shall be completed in accordance with all applicable Local, State, and Federal codes, laws, ordinances, regulations, standards, etc. At minimum, the scope of work shall be provided in accordance with the eight (8) Drawings (G001, G002, C001, C002, M001, M002, M003 and E001), specifications, and the requirements stated herein. Locations and layout for new facilities shown on the Drawings are for illustrative purposes only and should be reviewed and modified by the Design-Builder to optimize the layout for operability, maintenance, and constructability of new facilities. Likewise, the specifications have been developed to a 30% design level and should be reviewed and modified by the Design-Builder for optimization.

1. Hydraulic Modeling

a. Provide steady-state hydraulic profile for the existing force main. Determine the hydraulic grade within the standpipe during 1 pump, 2 pump, 3 pump, and 4 pump operation.

b. Create a water hammer model of the effluent force main and standpipe using the Bentley HAMMER software and execute for normal pump start/stop, 1 pump trip, 2 pump trip, and 4 pump trip events. Design-Builder to confirm sizing of standpipe is adequate to mitigate transient pressures while maintaining minimum freeboard. Assume a Hazen-Williams friction coefficient of 100.

2. New Standpipe

a. Design and construct one (1) welded steel standpipe inclusive of all labor, materials, tools and equipment necessary to design, fabricate, construct, inspect and test the welded steel standpipe, foundation, and accessories. The standpipe shall be installed on County property adjacent to the existing Effluent Pump Station and effluent flow meter. The Design Build team is responsible for designing the standpipe foundation in accordance with the recommendations of the geotechnical report found in the Appendices. The standpipe shall be located such that adequate clear space is provided around the structure to facilitate construction of the foundation, welded steel panels, finishes, and accessories.

Refer to Section 13120 Welded Steel Tank for detail.

b. The standpipe steel panels are to be radiographic level 3 welded or better with X-Ray verification. The welds should limit slag and ensure full penetration.

c. Provide full coatings preparation, application, and testing of interior and external surfaces. Refer to Section 09851 Standpipe Painting for detail.

d. Demolish existing pavement and subgrade in the location of the new standpipe.

e. The top slab of standpipe foundation shall be concrete construction and sloped to a concrete formed sump. The slope shall be no less than 2%. A sump drain of no less than 10-inches in diameter shall be routed from the bottom of the sump and join with the overflow pipe in the yard. Include an isolation valve on the sump drain in the yard to facilitate complete drainage of the standpipe. Isolation valve shall be supplied with extend operator, valve box, and traffic rated cover.

f. Provide two (2) manways accessible from grade through the sidewall of the standpipe. Design-Builder to coordinate size of manways with the County.

g. Provide separate influent and effluent pipes of 42-inches in diameter or more that penetrate through the sidewall of the standpipe at a height of no less than 12 feet from the top of foundation to invert of pipe. The penetrations shall be welded and watertight.

h. Install type 316 stainless steel safety cages on the influent and effluent pipe penetrations within the standpipe. Clear opening of safety cage mesh shall be small enough to prevent entry of a human into the pipes. The safety cages shall extend sufficient distance from the pipe openings to not pin a diver against the mesh while performing maintenance activities during typical operation.

i. Provide a ladder internal to the standpipe over the entire height (cover to top of foundation). The ladder shall have intermediate landings, fall protection, and harness tie-off points as necessary in accordance with OSHA regulations.

j. Provide an overflow scupper box with external overflow pipe(s) of combined effective area equivalent to 36-inches in diameter or more routed to grade along, and secured to, the sidewall of the standpipe.

k. Provide overflow blowoff panels near the top of the standpipe side wall above the piped overflow elevation. Panels shall be concentrated toward the stream side of the standpipe. These panels are to remain normally closed and sealed to prevent access to the interior by birds, insects, or sunlight. During an emergency scenario when inflow overwhelms the piped overflow, and the standpipe is at risk of pressurizing, the blowoff panels shall open passively by hydrostatic pressure and allow excess water to run down the exterior sidewall of the standpipe to the splashpad at grade, for channelized flow offsite. Blowoff panels are to be designed by the Design-Build Team, including number of panels, size, locations, opening mechanism, and access (if necessary). At minimum, the blowoff panels shall be sized to pass an overflow of 60 mgd.

l. Provide a self-supporting, ellipsoidal design welded steel roof cover with no internal framing. The roof cover shall have a rainproof hatch for access to the interior ladder and a hatch for temporary exhaust fan connection for ventilation. Another hatch shall be sized and installed for the purpose of accessing future mixing equipment. The roof cover shall have guardrails, toe board, stairs, platforms, and tie-off points as needed for safe access to all maintenance items and access points on the roof. Roof cover is to include provisions that prohibit bird nesting and roosting surfaces. All hatch sizes to be coordinated with the County.

m. Provide passive ventilation above the overflow blowoff panels’ elevation to prevent pressurization or vacuum pressures within the standpipe. The Design-Builder Team is to size the vent(s) to prevent pressurization or vacuum pressures for the two following boundary conditions: 60 mgd of treated wastewater entering the standpipe with no out flow and 60 mgd of treated wastewater leaving the standpipe with no inflow. Vent(s) shall be accessible for maintenance and have type 316 stainless steel insect screens. During normal operation, no sunlight is to enter the standpipe. Vents shall be designed to prevent sunlight entry.

n. Provide spiral staircase along the exterior of the standpipe with intermittent landings as necessary per OSHA regulations. The spiral staircase is to be constructed of carbon steel, with grating walkway and checked plate platform including carbon steel handrail. Provide a platform near the roof cover with ample space for three staff members and tools/equipment. The platform is to be a minimum of 12 feet long and 5 feet wide. The top platform is to be a staging point to access the roof cover for maintenance. Platform shall have a locking gate, as necessary, to separate access that requires a fall safety harness and tie-off points from areas that do not. Two tie-off points shall always be within reaching distance. Stairs, railing, platform, and other carbon steel components shall be coated with the standpipe.

o. Install LED lighting on the roof cover, top platform, and external access stairs. Provide beacon light as necessary if required by the FAA.

p. Provide one 120V outdoor rated receptacle with raintight cover on top platform.

q. Provide the following instrumentation and controls for the standpipe:

i. 4-20 mA radar level sensor

ii. Float switch LSL

iii. Float switch LSH

iv. Float switch LSHH

v. Position switch (for each overflow blowoff panel)

r. Float switches shall be model 9G-EF, mercury-free, Direct Acting Float Switches with cables and weights, as manufactured by Siemens Water Technologies, or equal.

s. Radar level sensor shall be Drexelbrook DR7500, or equal.

3. New Valve Vaults

a. Provide three (3) concrete valve vaults. One each for the influent, effluent, and bypass valves. All valve vaults to include the following scope of work:

i. Traffic rate access hatch, aluminum ladder, ladder safety post, waterproof pipe penetrations, pipe and valve supports, sump pump and accessories, interior LED lighting, and hatch position switches.

ii. Sump pumps to have float level switches LSL, LSH, and LSHH. Control panels for sump pumps to be mounted on a freestanding electrical equipment mounting rack installed adjacent to the standpipe in a location coordinated with the County. Control panels to be located adjacent to the valve control panel (more details below).

iii. Isolation valves 36-inches in diameter and larger to be gate valves in accordance with Section 15100 Process Valves, sized for the process pipe, and include dismantling joints.

iv. Isolation valves 36-inches in diameter and larger to have motorized operators for full open/close. Valves to have local controls and SCADA control. One local control panel shall be provided to open/close the three large gate valves. This panel shall be located on a freestanding electrical equipment mounting rack installed adjacent to the standpipe in a location coordinated with the County. Control panel to be located adjacent to the sump pump control panels (more details below).

v. The electrical equipment mounting rack shall include, at minimum, a 1/4” thick aluminum mounting plate, 3”x3”x3/8” aluminum angle posts, 3/8” thick x 7” square welded aluminum base plate with 1/8” thick rigid neoprene or Formica, 4 x 5/8” threaded stainless steel rod anchor bolts with minimum 6” embedment into a raised concrete slab. Provide two supports for enclosures/equipment wider than 8”. Provide additional vertical supports every two feet for enclosures wider than 3’.

vi. Valve vaults shall be designed per County building code to meet minimum requirements for ingress and egress, and safety.

vii. Refer to drawings for minimum spacing within each valve vault.

viii. Floor of valve vaults to slope toward sump pit. Sump pit to be sized appropriately for sump pump. Sump pump LSH shall be below the top of sump pit.

ix. Top slab of valve vaults to be removable. Provided embedded lifting hooks.

b. Provide a 6-inch drain with equally sized gate valve routed from the standpipe influent valve vault to the piped overflow.

c. Provide a 12-inch future utility water connection with gate valve and blind flange in effluent valve vault.

d. All valve vaults in paved areas to be flush with pavement and traffic rated.

e. Valve vaults in the yard to be at least 6-inches above grade.

4. Yardwork

a. Location of standpipe to be regraded as necessary for installation.

b. Demolish existing pavement as necessary. Provide new pavement after new work is installed to the extent of existing pavement, and as directed by the County. All pavement damaged during construction to be repaved.

c. Piped overflow from standpipe to be routed to effluent pump station wet well. Design-Builder Team to design routing and penetration through wet well wall. The overflow invert shall discharge into the wet well above high-high level.

d. Provide minimum 42-inch diameter influent pipe from existing force main to standpipe.

e. Provide minimum 42-inch diameter effluent pipe from standpipe with reducer to join with the existing pump station bypass.

f. Provide thrust blocks for all changes in direction from existing force main. Design-Builder to size thrust blocks.

g. All pipe joints to be restrained.

h. Design-Builder shall coordinate with the standpipe manufacturer to determine the extent and size of concrete encasement that is required for buried pipe within proximity to the standpipe.

i. Vertical influent and effluent pipes above grade shall be fitted with UV-resistant, restrained expansion joint. At least two pipe joints shall be provided upstream and downstream of each structure for differential settlement.

j. Route sump pump discharges to the nearest plant sewer.

k. Provide a concrete splash pad beneath the overflow blowoff panels to prevent erosion during an overflow event.

Runoff from the splash pad is to be captured in a swale for discharge to the flood plain. Both splash pad and swale are to be designed to accommodate 60 mgd of fluid without damage. The swale shall terminate outside the fence line, but before impacting wetlands.

l. Provide underground duct banks to accommodate feeder and control circuits for new equipment and instrumentation from standpipe, valve vaults, and site lighting. Electrical power to be fed from the Effluent Pump Station LP-1 and LP-2. Control circuits to be routed to PS-RIO and/or PS-CP.

m. Bollards to be installed around standpipe. Bollards to be placed such that a vehicle cannot damage the standpipe, staircase, or associated above grade piping.

n. LED site lighting to be provided around standpipe area.

o. Restore any damage to yard, fences, gates, and existing structures or equipment.

5. Bypassing

a. The Design-Builder is responsible for maintaining forward flow from the effluent pump station at all times during construction. Bypass shall be capable of passing 60 mgd.

b. Temporary bypass pipe shall have a minimum internal diameter of 36-inches.

c. Flow measuring shall be maintained at all times. Any bypass of the existing flow meter shall require a temporary magnetic flow meter. Accuracy of the temporary magnetic flow meter shall be equal to, or better than the existing.

d. Temporary piping shall be installed between the linestop equipment to maintain effluent flow while the line stops are in place.

e. Temporary piping, fittings and valves shall be rated to 150 psi, and all joints shall be fully restrained.

f. Design of the temporary piping is the responsibility of Design-Builder and shall be coordinated with the wet tapping and linestop contractor.

g. Provide an emergency valved connection on the temporary piping, to enable additional pumping capacity to be connected during construction.

i. Valve shall be a gate valve complying with Section 15100 Process Valves.

h. Air release valves shall be included at all high points on the temporary piping.

i. Temporary Linestops

i. The Design-Builder shall use a specialty subcontractor to perform the wet tapping and line stopping work. Wet tapping and line stopping was completed during an earlier project. The existing tapping connections may be suitable for reuse for this project. The Design-Builder shall determine the feasibility of reusing the existing wet taps for installations of linestops and bypass. The wet tapping and linestop contractor shall meet the following minimum requirements.

1. A minimum of 10 years of experience supplying wet tapping and linestop services.

2. Have demonstrated experience with wet tapping and line stopping work on pipelines of similar size or larger and the same materials as the pipelines on the project, completed within the past eight years.

3. Completed a minimum of two linestops on pipelines of equal size or larger and the same material as the pipelines on the project within the past eight years.

ii. Linestop equipment shall utilize folding head technology.

iii. Linestop equipment and fittings including tapping sleeves shall be rated for a minimum 100 PSI working pressure.

iv. Linestop equipment shall incorporate 36-inch bypass connections for connection of temporary piping. The head loss through each linestop and its housing shall not exceed 2 psi at a flow of 27 MGD.

v. Linestops shall provide shutdown sufficient to enable the required work to be completed, and shall be as close to leak-free as possible. Design-Builder is responsible for any additional dewatering pump requirements that may be required.

1. If an existing connection between the line stops are not available to drain the existing pipe, install a minimum of one 6-inch wet tap between the line stops to enable the line to be tested for shutdown prior to commencing existing piping demolition.

6. Electrical

a. Electrical feeder and control circuits for new equipment and instrumentation for standpipe, valve vaults, and site lighting shall be run from existing panels in the Effluent Pump Station. Power to be fed from the lighting panels LP- 1 and LP-2. Control circuits to be routed to PS-RIO and/or PS-CP depending on capacity. At minimum, the Design Builder shall provide additional 16 PT hardened modules:

i. Direct Input – Modicon BMXDAI1604H

ii. Direct Output – Modicon BMXDRA1605H

b. Module shall be provided with associated fused power, terminal blocks, interposing relays, etc. to make a complete system.

c. Design Builder to coordinate voltage and phase for power and circuitry numbers with existing panels, and new equipment and instrument manufacturers.

d. Provide local motor disconnect switches and local control stations for all new process equipment.

e. Provide a disconnect switch in the yard for all standpipe electrical equipment.

f. Provide rubber safety mats in front of control panels with source voltage above 120 VAC.

g. AC voltage limit is 480 VAC and DC voltage limit is 24 VDC. AC and DC circuits shall be routed in separate conduits and through separate boxes. AC and DC circuits are to be run in separate wireways and landed on separate terminal blocks in control panels.

7. General:

a. Provide all associated piping and connections to facilitate scope of work.

b. Surface prep and paint all new surfaces (including walls, ceiling, and floors) and piping in accordance with Charles County Standard Specifications for Construction Section 09900. Standpipe surface prep and paint to be in accordance with technical Specification Section 09851 in the appendices.

c. Provide stormwater management for all new structures and roadways to meet permit requirements and provide positive drainage away from new structures and prevent standing water accumulating on new and existing roadways.

1.1 GENERAL

1. Monthly written progress reports shall be provided with an individual monthly invoice.

2. Design-Builder shall attend a kickoff meeting with the County and Owners Advisor before initiating any work. Design- Builder shall prepare and distribute the agenda in advance. Minutes shall be prepared and distributed by the Design-Builder following the meeting.

3. Release of selected equipment for fabrication prior to receipt of 100% Design Submission and obtaining permits may be permitted with County and Owners Advisor approval.

4. Design-Builder is responsible for all components necessary to provide a complete and functional effluent filtration system, whether those components are explicitly named in this Scope of Services or not.

5. No deviation shall be allowed from equipment, materials, or approach proposed in Offerors Technical Proposal and this RFP without County and Owners Advisor approval.

6. Design builder is required to coordinate with the County’s programmer during startup and testing as indicated in 3.0-6 (above).

1.2 DESIGN AND PERMITTING

1. Provide revised design schedule based on schedule submitted with the Proposal updated to reflect County and Owners Advisor comments and actual NTP date.

2. Field verify dimensions and elevations of existing structures.

3. If new structures are not placed within an allowable distance, as determined by the permitters, from the locations shown in the geotechnical report provided in the Appendices, the Design-Builder shall perform additional soil borings. Coordinate final boring location with County staff in the field to avoid existing utilities. Provide a geotechnical recommendation report to the County and Owner’s Representative with “seal” and signature of a registered licensed Professional Engineer, duly authorized in the State of Maryland.

4. Design-Builder shall provide design deliverables including:

a. 60% Design Submission including 60% draft Design Drawings, preliminary P&ID, preliminary Hydraulic Profile with associated calculations, Bentley HAMMER model results, updated Equipment List, preliminary I/O list, and preliminary Process Control Narratives.

b. 90% Design Submission including 90% draft Design Drawings, updated P&ID, updated Hydraulic Profile with associated calculations, updated Equipment List, updated I/O list, and preliminary Process Control Narratives, Submittal shall incorporate all comments from the 60% review meeting.

c. 100% Design Submission including final Design Drawings signed and sealed by a Maryland Licensed Professional Engineer, final Equipment List, final I/O, and final Process Control Narratives Submittal shall incorporate all comments from the 90% review meeting.

5. Design deliverables shall be provided in electronic format (AutoCAD and pdf). In addition, provide five (5) printed copies of each submittal.

6. Monthly progress meetings with the County and Owners Advisor are to be held during Design. Design-Builder shall prepare and distribute the agenda in advance. Minutes shall be prepared and distributed by the Design-Builder following each meeting no later than 72 hours after the meeting.

7. Design Review Meetings with the County and Owners Advisor shall be held to review each submittal package. Design- Builder shall prepare and distribute the agenda in advance. Minutes shall be prepared and distributed by the Design-Builder following each meeting. Following each submittal review meeting, Design-Builder shall include a point-by-point response to all comments received from the County and Owners Advisor.

8. Design-Builder shall abide by the County’s permit submittal process and obtain all required permits for the project, including, but not limited to:

a. Charles County Development Services Permit including stormwater management plans and site development plans inclusive of any 3rd party reviews that may be required

b. Charles County Demolition Permit

c. Charles County Building Permit

d. Charles County Grading Permit

e. MDE Water and Sewerage Construction Permit

f. Electrical and Plumbing Permits

g. Stormwater (SWM) Plan

h. MDE Stormwater General Permit No. 14-GP NOI (if required)

i. MDE General Discharge Permit No. 17-HT NOI (if required)

j. Forest Conservation Plan (FCP);

k. Federal Aviation Administration Obstruction Evaluation (FAA Form 7460-1)

9. Provide as many copies and revisions of permits as required for permitting agency review and approvals.

1.3 CONSTRUCTION

1. Provide revised Critical Path Method (CPM) construction schedule in Microsoft Project based on schedule submitted with the Proposal updated to reflect finalized design, County and Owners Advisor’s comments, and actual Notice-to-Proceed (NTP) date. Extension of overall contract length from NTP to Substantial Completion beyond that included in the Proposal shall not be allowed.

2. Design-Builder is required to submit a 3-week look ahead updated every Friday.

3. Design-Builder is required to provide daily field reports. Daily field reports shall be submitted no later than two (2) business days after the completed workday.

4. Provide detailed construction schedule of values to serve as the basis of payment during construction. Each construction task shall be broken down by work type and unit quantity to easily measurable items. Line items in schedule of values shall roll up to the bid item total for the respective categories.

5. Video site to document existing conditions prior to beginning construction.

6. Design-Builder shall be responsible for all required temporary facilities for construction. Construction trailers and laydown area shall be located within the designated site area shown on FIGURE 1 – Site Plan (Refer to Part B – Section 5.0 – Drawings).

7. Design-Builder shall hire a 3rd party construction surveillance entity that will set up a 1080p camera with suitable viewpoint of the construction area to produce time-lapse construction videos throughout the duration of construction.

a. Camera shall be capable of livestream viewing.

b. Camera shall be protected by a weather hood.

c. Video footage shall be accessible on an external website that will be easily accessible by Owner and public to view progress of the project.

d. Videos shall be updated at a minimum of once per month.

8. Install erosion control devices, structures, silt fence, check damns, and stormwater inlet protection prior to beginning sitework.

9. Install signage and barricades blocking through traffic around the east side of the Effluent Pump Station.

10. Location of contractor stockpile and staging area and construction entrance to be determined by the Design-Builder.

11. Design-Builder to determine the optimal sequence of construction for standpipe, valve vaults, yard piping, and tie-ins with the existing force main. Flow from the Effluent Pump Station to the force main downstream of the work area shall be maintained at all times and be metered. Provide bypassing around the tie-ins of new work to the existing force main during construction. Minimum requirements for bypassing are as follows:

a. Minimum bypass pipe size of 36-inches in diameter.

b. If the existing flowmeter is being bypassed, provide a temporary flowmeter on the bypass line.

c. Design-Builder to determine connection details, thrust restraint, temporary supports and all other facilities required for the duration of the temporary bypass operation.

d. Create a comprehensive bypass plan for County review. Bypass plan shall include a written description, sequence of set up and tear down, dimensional drawings, materials of construction, testing procedures, equipment cutsheet information, temporary electrical equipment and wiring for flowmeter, and any other pertinent information the County finds necessary for bypass implementation. If bypass pumping is proposed, provide pertinent information on the laydown area, routing of suction and discharge piping, power source, power consumption, and controls.

e. Contractor shall coordinate planned bypass operations as far as possible in advance, with a goal of at least three months planning notice to the County.

f. Contractor shall provide 2 week advance confirmation to the County for when bypass operations will commence.

12. The standpipe steel panels are to be full penetration, radiographic level 3 welded or better with X-Ray verification. X-

Ray verification to be completed before coating application.

13. Sandblast, clean, and coat standpipe and receive approved inspection reports before hydrostatic testing.

14. Design-Builder shall provide recirculation pumping system and piping system to allow System Demonstration Testing of the new standpipe for five (5) consecutive days duration using treated plant effluent water. Recirculation system shall pump treated water from the existing Effluent Pump Station wet well to the standpipe on an intermittent basis during the test. System Demonstration Testing must be successfully complete before placing new standpipe on-line and commencing Startup per Section 01660.

15. Monthly progress meetings with the County and Owners Advisor are to be held during Construction. Design-Builder shall prepare and distribute the agenda in advance. Minutes shall be prepared and distributed by the Design-Builder following each meeting no later than 72 hours after the meeting. Submit progress photos of work in jpeg format at each progress meeting, a minimum of ten (10) photos per day.

16. Construction shall be staged to avoid interference with the County’s operations.

17. Design Builder shall coordinate with other ongoing projects to avoid interference.

18. Design Builder shall coordinate any road closers with the Owner at least one week in advance. Any road closures should be for short periods as needed to facilitate construction only.

19. Provide a temporary power feed for the Design-Builder’s construction related activities with submetering device to record electrical use. Power shall be supplied from a location within the plant approved by the County. Design-Builder shall be responsible for assessment of available power supply locations and design and installation of the temporary power feed.

Design-Builder will be responsible for payment to the County for power consumption for their temporary power feed for construction activities.

20. Restore any ancillary damage to pre-construction conditions or better.

21. Submit any questions during construction it writing to County and Owners Advisor via the County’s Microsoft SharePoint site hosted on the County’s servers.

22. Substantial Completion for Construction shall not be issued by the County until all Startup activities are completed and all Performance Tests have been successfully completed to the County’s satisfaction.

1.4 TESTING AND STARTUP

1. Test and Startup all equipment in accordance with Section 01660 (Testing and Startup in Part B, Section 5.0 – Specifications).

2. Manufacturer’s representatives for the standpipe shall provide all certificates as specified below:

a. Installation Certificate: Submit one copy to both County and Owners Advisor of manufacturer representative’s Installation Certificate indicting that the manufacturer’s representative has inspected the installation and that the structure provided by their organization has been properly installed, aligned, and is ready for operation. Proper installation includes foundation, steel panel welds, coatings system, stairs, platforms, grating, handrail, affixed piping, overflow scupper box, bypass blowoff panels, vents, hatches, and all other processes or equipment within the manufacturer’s scope.

b. Certificate of Equipment Compliance: Submit one copy to both County and Owners Advisor of manufacturer’s representative’s written Certificate of Equipment Compliance indicating that the manufacturer’s representative has witnessed the Functional Test for the standpipe provided by their organization, final adjustment to the equipment have been made, the equipment has been tested to their satisfaction, and the equipment meets all performance and testing requirements included in the Contract Documents, excluding testing to be performed either during or after Startup.

3. Manufacturer’s representatives for the motorized isolation valves shall provide all certificates as specified below:

c. Installation Certificate: Submit one copy to both County and Owners Advisor of manufacturer representative’s Installation Certificate indicting that the manufacturer’s representative has inspected the installation and that the equipment provided by their organization has been properly installed, aligned, lubricated, and is ready for operation.

d. Certificate of Equipment Compliance: Submit one copy to both County and Owners Advisor of manufacturer’s representative’s written Certificate of Equipment Compliance indicating that the manufacturer’s representative has witnessed the Functional Test for the equipment provided by their organization, final adjustment to the equipment have been made, the equipment has been tested to their satisfaction, and the equipment meets all performance and testing requirements included in the Contract Documents, excluding testing to be performed either during or after Startup.

4. Manufacturer’s representatives for the standpipe shall provide two (2) distinct training sessions by a qualified, factory trained, operations and maintenance trainer to the County prior to Startup to instruct Owner personnel in proper care, operation, and maintenance of the standpipe. Training sessions shall be conducted at the Site on Tuesdays, Wednesdays, and Thursdays and shall last for no less than two (2) hours each. The two (2) required sessions shall be scheduled for a) Morning session beginning at 8:30 a.m., and b) Afternoon session beginning at 3:00 p.m. Actual times, locations, and durations of training sessions shall be approved by County. Each training session shall be videotaped by the Design- Builder and copy of the video shall be transmitted to the County in electronic format approved by the County.

1.5 PROJECT CLOSEOUT

1. Provide Operations and Maintenance Manuals for all new equipment. Submit (3) three hard copies and electronic copy of each in PDF format. Manual Preparation: Manuals shall include operation and maintenance information on all systems and items of equipment. The data shall consist of catalogs, brochures, bulletins, charts, schedules, approved Shop Drawings corrected to as-built conditions and assembly drawings and wiring diagrams describing location, operation, maintenance, lubrication, operating weight, lubrication charts and schedules showing manufacturer’s recommended lubricants for each rotating or reciprocating unit, and other information necessary for Owner to establish effective operating and maintenance programs. The following shall also be included:

a. Equipment cover sheet listing the supplied equipment manufacturer’s name, brand name, model numbers, serial numbers, equipment installer (provide contact name, address, phone and fax numbers, and e-mail address), equipment Supplier (provide contact name, address, phone and fax numbers, and e-mail address), and equipment manufacturer (provide contact name, address, phone and fax numbers, e-mail address, and website address).

b. Performance curves for all pumps and equipment.

c. Approved Shop Drawings of each piece of equipment listed herein.

d. Manufacturer’s cut sheets and dimensional drawings of each piece of equipment, and details of all replacement parts.

e. Manufacturer’s erection, operation, and maintenance instructions for all equipment and apparatus, and complete listing of nameplate data.

f. Complete electrical and control schematics with labeled terminations for all individual pieces of equipment and systems including one-line diagrams, schematic or elementary diagrams, and interconnection and terminal board identification diagrams.

g. Complete piping and interconnecting drawings.

h. Complete parts list with parts assembly drawings (preferably by exploded view), names and addresses of spare parts suppliers, recommended list of spare parts to be kept “in stock” and sample order forms. Lead time requirements for ordering parts shall be estimated.

i. Instructions with easily understood schematics or diagrams for disassembling and assembling equipment for overhaul and repair.

j. Shop testing results where applicable.

k. Supplier’s Installation Certificate.

l. Supplier’s Certificate of Equipment Compliance.

m. Field testing/performance reports where applicable.

n. Supplier’s equipment warranty.

o. Information not applicable to a specific piece of equipment installed on this Project shall be removed from or crossed out on the submissions.

p. Illegible data due to any cause, including poor copy quality or reduction, will not be accepted. Manuals with illegible data will be rejected and returned for correction.

2. Provide As-Built Drawings. Submit (3) three full-size hard copies and electronic copy in AutoCAD and PDF formats.

3. Provide a spreadsheet with all the locations to be implemented into the County’s asset management database.

4. Two (2) distinct training sessions shall be provided for each instrument, control panel and piece of equipment, and shall be provided on the same day for the same instrument, panel, or piece of equipment. As a minimum, training sessions shall be for the durations specified in the individual specification sections, but no less than two (2) hours each. Training sessions shall only be scheduled on Tuesdays, Wednesdays, and Thursdays. The two (2) required sessions shall be scheduled for a) Morning session beginning at 8:30 AM, and b) Afternoon session beginning at 3:00 PM. Each session shall be for a full, complete training session. Each training session shall be conducted for eight (8) persons on the Owner’s staff. Training shall be scheduled with the Owner a minimum of 15 calendar days prior to the start of training. Specific training shall be coordinated with the owner.

1.6 MATERIALS AND EQUIPMENT

1. All materials and equipment shall be new and of high quality designed specifically for use in a wastewater treatment facility environment.

2. Materials and equipment shall be in accordance with Part II Technical Requirements of the Charles County Standard Specifications for Construction (see https://www.charlescountymd.gov/government/planning-and-growth-management/planning-and-growth-management-publications/codes-ordinances-and-regulatory-documents/-folder-505) unless otherwise noted.

3. The valve vaults shall be designated as a Wet Location.

4. The exterior of the standpipe shall be designated as an Outdoor Location.

5. Instrumentation and electrical enclosures shall be designed and rated for Wet and Outdoor Locations where required.

Provide stainless steel NEMA 4X equipment and enclosures unless otherwise approved by the County.

6. Provide corrosion resistant electrical support structures for electrical equipment, either stainless steel or aluminum with stainless steel hardware.

7. Electrical enclosures and equipment shall be NEMA 4X stainless steel.

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8. All pipe and equipment supports and fasteners shall be Type 316 stainless steel.

9. All standpipe stairs, platforms, guardrails, and related components shall be galvanized steel with painted coating. Painted galvanized steel fasteners shall only be used with painted galvanized steel components.

10. All piping 4” and larger shall be ductile iron pipe.

11. All buried, or inside piping under 4” diameter shall be Schedule 80 PVC.

12. All above grade, outside piping under 4” diameter shall be Type 316 stainless steel.

13. All buried DIP shall be wrapped in V-Bio Enhanced Polyethylene Encasement.

14. Gate valves shall be used for DIP except where contract language states otherwise. Other valve types must receive approval from the County.

15. Conduit shall be aluminum.

16. Standpipe shall be CB&I, Fisher Tanks, or approved equal.

17. Motor operated valves shall be Auma, Limitorque, or approved equal.

18. Sump pumps shall be Goulds Water Technology or approved equal.

19. Buried mechanical joints shall be EBAA Megaflange or approved equal.

20. Design and construction shall be in accordance with Charles County Department of Utilities SCADA Standards (Revision 1, June 2011) that will be provided to the selected contractor after contract execution. These standards and RTU panel currently apply to wastewater pump stations, wells, and towers. It is expected that the design will expand/modify these standards to apply to the new facilities and the needs of County staff.

21. Submit shop drawings for all new equipment for County and Owners Advisor review and approval prior to releasing for fabrication. Shop drawings shall be provided in electronic format and transmitted for approval via the County’s Microsoft SharePoint site hosted on the County’s servers. Include all descriptive data, performance characteristics, material specifications, spare parts list, drawings, piping diagrams, wiring schematics, and shall be complete and accurate to indicate item-by-item compliance with the Design-Builders Proposal, design criteria, RFP requirements, and approved drawings incorporating all comments from County and Owners Advisor. Revise and resubmit until acceptable to County and Owners Advisor. Identify all changes made since previous submittal in a cover letter or memorandum.

1.7 CONTROLS

1. Standpipe

a. The influent, effluent, and bypass valves shall have the capability of being controlled locally through a control panel located near the standpipe at grade or via SCADA. The Design Builder shall determine permissible valve opening and closing scenarios to prevent upset conditions. Permissible valve opening and closing scenarios must be approved by the County.

b. If LSHH is activated, the bypass shall open automatically.

2. Sump Pumps

a. Sump pumps within the valve vaults shall be float controlled with a local control panel located near the standpipe at grade. The following signals shall be communicated to PS-RIO or PS-CP: pump running, LSHH, fault.

3. Provide circuits to PS-RIO or PS-CP for monitoring and control of equipment indicated below. Programming and integration to be performed by the County’s Programmer:

a. Standpipe associated instrumentation, including but not limited to, level sensors, float switches, hatch position switches, and bypass blowoff panel position switches.

b. Sump pump systems

c. Valve vault instrumentation, including isolation valve motorized actuators, hatch position switches, and flood float switches.