Statement of Work 1282A721R0008 Pine Ridge Job Corps Center Water Tower Tank Mixer.pdf

United States Department of Agriculture

Forest Service

Pine Ridge Job Corps Civilian Conservation Center

May 2021

STORAGE TANK MIXER

Contract Documents

AUSD

trevorbmattson Text Box Statement of Work

W-66-2021 May 21, 2021

SPECIFICATIONS INDEX

Pine Ridge Job Corps Water Tower Tank Mixer

Description Section

General Requirements 01 01 50

In-Reservoir Water Treatment Equipment 33 16 96

Plan Sheets T-1

STORAGE TANK MIXER 010150 – 1

PINE RIDGE JOB CORPS CCC GENERAL REQUIREMENTS

SECTION 010150

GENERAL REQUIREMENTS

PART 1 – SUMMARY OF WORK

1.1 DESCRIPTION

A. Work for this project requires the contractor to be responsible for supplying all labor, materials, equipment, utilities, miscellaneous items, freight and delivery and all necessary valid licenses for the work summarized as follows:

1. Furnish and install a potable tank mixer for a 50,000-gallon pedosphere water tower.

B. LIST OF SPECIFICATIONS AND DRAWINGS

1. 1 Sheet Drawing provided in separate file

2. 010150 General Requirements

3. 331696 In-Reservoir Water Treatment Equipment

1.2 LOCATION

A. This project is located at the Pine Ridge Job Corps Center campus located approximately 13 miles south of Chadron, Nebraska. The address is 15710 South Highway 385, Chadron, Nebraska 69337. Driving directions can be obtained by calling the Center at 308.432.3316.

1.3 PROJECT SCHEDULING

A. Work hours for this project are between 8:00 AM-4:30 PM Monday through Friday.

1.4 POINT OF CONTACT

Center Point of Contact: David Jones, ph: 308.430.2729, david.jones@usda.gov.

1.5 USE OF PREMISES

A. Confine constructions operations to immediate area of work. Do not disturb portions of Project site beyond areas in which the Work is indicated.

B. Government will occupy site and buildings during entire construction period.

Cooperate with Government during construction operations to minimize conflicts and facilitate Government usage. Perform the work so as not to interfere with Government's day-to-day operations.

STORAGE TANK MIXER 010150 – 2

C. Keep driveways, parking areas, loading areas and entrances to buildings clear and available to Government, Government's employees, and emergency vehicles at all times. Do not use these areas for parking or storage of materials.

Do not close or obstruct walkways, corridors, or other occupied or used facilities without written permission from Government.

1.6 WORK RESTRICTIONS

A. Smoking is permitted on campus only in the designated smoking area.

1.7 SCHEDULE OF ITEMS

A. Schedule of Items:

1. Provide pricing for all items listed in the Schedule of Items.

2. Contract award will be made for all Base Items.

B. Base Items (BI):

1. Base Item No. 1 – Furnish and Install Storage Tank Mixer

a. Measurement: This item is measured as a Lump Sum quantity.

b. Payment: The contract lump sum price as shown in the Schedule of

Items includes all materials, equipment, labor and incidentals to install a potable tank mixer for a 50,000-gallon pedosphere water tower.

PART 2 – SUBMITTAL PROCEDURES

2.1 DEFINITIONS

A. Action Submittals: Written and graphic information that requires Government approval.

B. Informational Submittals: Written information that does not require Government approval. Submittals may be rejected for not complying with requirements.

2.2 PROCEDURES

A. Contractor Responsibilities

1. Review each submittal and check for compliance with the Contract

Documents.

2. Highlight, encircle, or otherwise identify deviations from the Contract Documents on submittals.

3. Include the following information on label or cover sheet for processing and recording action taken:

STORAGE TANK MIXER 010150 – 3

a. Project name.

b. Date.

c. Name and address of Contractor.

d. Name of manufacturer.

e. Unique identifier, including revision number.

f. Number and title of appropriate Specification Section.

g. Drawing number and detail references, as appropriate.

h. Date of Contractor’s approval.

i. Statement certifying that submittal has been reviewed, checked, and approved by the Contractor for compliance with the Contract Documents.

4. The Government will not review submittals that do not bear Contractor's approval and will return them without action.

5. Unless additional copies are required for final submittal, and unless the Contracting Officer (CO) observes noncompliance with provisions of the Contract Documents, initial submittal may serve as final submittal.

6. Submittals must be submitted in electronic PDF format. Submit to CO via email or electronic file transfer site.

7. Only final submittals with mark indicating action taken by Government are to be used for construction.

8. Submittals not required by the Contract Documents will not be reviewed and may be discarded.

B. Processing Time: Time for review shall commence on CO's receipt of submittal.

1. Initial Review: Government will review initial submittal within 10 working days. Additional time may be needed if processing must be delayed to permit coordination with subsequent submittals. CO will advise Contractor when a submittal being processed must be delayed for coordination.

2. Resubmittals: If resubmittal is necessary, it will be processed in same timeframe as initial submittal.

2.3 ACTION SUBMITTALS

A. Prepare and submit Action Submittals required in the Technical Specifications in this contract, if applicable, and as indicated at the end of this subsection.

B. Collect information into a single submittal for each element of construction and type of product or equipment.

1. Mark up each submittal to show which products and options are applicable.

2. Include the following information, as applicable:

a. Manufacturer's written recommendations.

b. Manufacturer's product specifications.

c. Manufacturer's installation instructions.

d. Manufacturer's catalog cuts.

e. Wiring diagrams showing factory-installed wiring.

STORAGE TANK MIXER 010150 – 4

f. Compliance with recognized trade association standards.

g. Compliance with recognized testing agency standards.

C. Required Action Submittals

1. Product Data: See Technical Specification Sections.

2.4 INFORMATIONAL SUBMITTALS

A. Prepare and submit Informational Submittals required in the Technical Specifications in this contract, if applicable, and as indicated below:

B. Required Informational Submittals:

1. Accident Prevention Plan.

2. Construction Schedule.

2.5 CLOSEOUT SUBMITTALS

A. Prepare and submit Closeout Submittals, as follows:

1. See Technical Specification Sections.

PART 3 – TEMPORARY FACILITIES AND CONTROLS

3.1 USE OF UTILITIES

A. Utilities: Use of Government existing facilities will be permitted without metering and without payment of use charges, as long as facilities are cleaned and maintained in an acceptable condition. At Substantial Completion, restore these facilities to condition existing before initial use. The following are available for use by the contractor: water, and electrical power services. The following are not available: telephone service. The contractor is expected to provide whatever phone service he deems necessary for the duration of the project.

3.2 SANITARY FACILITIES

A. Sanitary facilities are available for use by the Contractor. Facilities must be cleaned and maintained daily.

3.3 STAGING AND STORAGE

A. Coordinate on-site staging and storage requirements with the Center Point of Contact or the Contracting Officer Representative (COR).

3.4 CONSTRUCTION WASTE DISPOSAL FACILITIES

A. Provide waste-collection containers in sizes adequate to handle waste from construction operations. Containerize and clearly label hazardous, dangerous, STORAGE TANK MIXER 010150 – 5 or unsanitary waste materials separately from other waste. Use of Government waste containers will not be permitted.

3.5 SAFETY AND ENVIRONMENTAL PROTECTION

A. Environmental Protection: Contractor shall provide protection, operate temporary facilities, and conduct construction in ways and by methods that comply with environmental regulations and that minimize possible air, waterway, and subsoil contamination or pollution or other undesirable effects.

B. Barricades, Warning Signs, and Lights: Comply with the national or state Manual on Uniform Traffic Control Devices (MUTCD) for erecting structurally adequate barricades, paint with appropriate colors, graphics, and warning signs/lights to inform personnel, students, and the public of possible hazards.

C. Fire Protection.

1. Store combustible materials in containers in fire-safe locations.

2. Maintain unobstructed access to fire extinguishers, fire hydrants, fire-protection facilities, stairways, and other access routes for firefighting.

Prohibit smoking in hazardous fire-exposure areas.

3. Supervise welding operations, combustion-type temporary heating units, and similar sources of fire ignition.

PART 4 – EXECUTION REQUIREMENTS

4.1 EXAMINATION

A. Before beginning work, examine areas and document existing conditions.

Proceed with installation only after unsatisfactory conditions have been corrected. Proceeding with the Work indicates acceptance of surfaces and conditions.

B. Field verify all new and existing dimensions affecting the work of this contract before ordering products.

C. Immediately on discovery of the need for clarification of the Contract Documents, submit a request for information to CO. Include a detailed description of problem encountered, together with recommendations for changing the Contract Documents.

4.2 INSTALLATION

A. Locate the Work and components of the Work accurately, in correct alignment and elevation to fit with existing construction.

STORAGE TANK MIXER 010150 – 6

B. Install per manufacturer's written instructions and recommendations.

4.3 PROGRESS CLEANING

A. Clean Project site and work areas daily, including common areas. Dispose of materials lawfully.

1. Comply with NFPA 241 requirements for removal of combustible waste materials and debris.

2. Do not hold materials more than 7 days during normal weather or 3 days if the temperature is expected to rise above 80 deg F (27 deg C).

B. Burying or burning waste materials on-site will not be permitted. Washing waste materials down sewers or into waterways will not be permitted.

4.4 PROTECTION OF INSTALLED CONSTRUCTION

A. Provide protection and maintain conditions that ensure installed Work does not get damaged or deteriorated prior to Substantial Completion.

4.5 CORRECTION OF THE WORK

A. Repair or remove and replace defective construction. Restore damaged substrates and finishes.

1. Repairing includes replacing defective parts, refinishing damaged surfaces, touching up with matching materials, and properly adjusting operating equipment.

PART 5 – CLOSEOUT PROCEDURES

5.1 FINAL COMPLETION

A. Preliminary Procedures: Before requesting final inspection for determining date of Final Completion, complete the following:

1. Submit certified copy of CO’s Substantial Completion inspection list of items to be completed or corrected (punch list), endorsed and dated by CO. The certified copy of the list shall state that each item has been completed or otherwise resolved for acceptance.

2. Submit evidence of final, continuing insurance coverage complying with insurance requirements.

3. Instruct Government personnel in operation, adjustment, and maintenance of products, equipment, and systems.

B. Inspection: Submit a written request for final inspection for acceptance. On receipt of request, CO will either proceed with inspection or notify Contractor of unfulfilled requirements. CO will prepare a final Certificate for Payment after

STORAGE TANK MIXER 010150 – 7

inspection or will notify Contractor of construction that must be completed or corrected before certificate will be issued.

1. Reinspection: Request reinspection when the Work identified in previous inspections as incomplete is completed or corrected.

END OF SECTION 010150

SECTION 33 16 96: IN-RESERVOIR WATER TREATMENT EQUIPMENT

SECTION 33 16 96 - IN-RESERVOIR WATER TREATMENT EQUIPMENT

PART 1 GENERAL

1.01 EQUIPMENT OVERVIEW

A. These specifications provide the requirements to furnish and install a potable tank mixer for the Pine Ridge Job Corps 50,000-gallon pedosphere water tower. The site location is 15710 US 385, Chadron, Nebraska 69337.

1.02 REFERENCES

A. Occupational Safety and Health Administration, OSHA B. Department of Transportation, DOT C. NSF / ANSI Standard 61 D. Underwriters Laboratories Inc., UL 508

1.03 QUALITY ASSURANCE

A. Continuous Operation Equipment. The mixer shall operate continuously, all day and all night, using 120 VAC as the power source.

B. No Visual Defects. The mixer shall have no visual defects, and shall have high quality welds, assembly, and corrosion resistant finish.

C. Qualified US Manufacturer. The manufacturer of the mixer shall have extensive experience in the production of such equipment, and the equipment shall be manufactured in the continental United States.

D. Factory Startup Services. Delivery, placement and startup services shall be available, but not included in the bid. For factory delivery and placement, services shall be performed by full time factory employees experienced in the operation of this equipment and who have completed OSHA safety trainings applicable to this type of placement.

E. Warranty. The mixer shall be warranted to be free of defects in materials and workmanship for a period of 5 years. This equipment warranty would run directly from the manufacturer of the equipment to the owner. The equipment warranty would not be part of the contract or any required bond.

1.04 SUBMITTALS

A. The awarded Bidder shall provide an electronic copy of the following documents.

Upon acceptance of these documents by the Engineer, the Bidder will be issued a Notice to Proceed, and may then proceed to place the equipment.

1. Manufacture Qualification Document

2. List of Supplied Equipment

3. Manufacturer Product Sheets

4. Electric Power Source Requirements

5. NSF / ANSI Standard 61 Documentation

6. Warranty Statement

7. Operation Manuals

1.05 FIELD SERVICES

A. Placement and startup. Equipment manufacturer shall offer placement and startup performed by equipment manufacturer’s full time factory employees trained in the operation of the mixer who have completed OSHA safety trainings applicable to this type of equipment placement and startup.

PART 2 PRODUCT SPECIFICATIONS

2.01 MANUFACTURER

A. Specified Equipment. The mixer shall be manufactured by Ixom Watercare, Inc. of

Dickinson, ND, or be a pre-approved alternative.

B. Pre-approved Alternative(s). Alternatives to the specified equipment will be considered on the following basis only.

1. Ten (10) Days Before Bid. To offer equipment as a pre-approved alternative, written application from the alternative supplier shall be made to the Engineer at least 10 days in advance of the bid opening.

2. No Material Difference in Quality of Equipment or in Vendor Support. The application should include:

a. A brief description of how the offered alternative does or does not meet each of the specifications in this document.

b. An analysis of how acceptance of the alternative equipment would likely affect the overall water quality goals of the project.

c. A statement of the science and support background of the supplier of the alternative equipment, so that the benefits and costs of the alternative equipment to the Owner can be estimated by the Engineer.

3. Five (5) Days Notice to Bidders. If the alternative equipment is accepted by the

Engineer, an informational addendum to these specifications shall be distributed by the Engineer to plan holders at least 5 days in advance of the bid opening.

2.02 PERFORMANCE AND FEATURES

A. The Pine Ridge Job Corps water tower is a 50,000-gallon pedosphere, with a high-water level of 118 feet, 6 inches and a low-water level of 97 feet, 6 inches. It was constructed in 2008 by Calwell Tanks.

B. Complete Water Circulation Required. To meet the project objectives, the tank or reservoir circulation shall be achieved by a single submerged unit within the reservoir capable of providing long distance circulation of water. The mixer shall have a direct measurable flow rate where suction shall enter specified mixer’s intake positioned within 2 inches of reservoir floor and discharging water vertically in a sheet flow pattern to induce a large volume, low velocity flow to reach the tank or reservoir water surface. The mixer must be placement flexible in design to allow best hydraulic positioning for tank or reservoir conditions to prevent hydraulic short circuiting within tank or reservoir. Suction not within 2 inches of tank or reservoir floor is not allowed.

C. Number of units required. To meet the project objectives, the following number of mixers are required.

Qty Model Tank or Reservoir

GridBee, GS-9, potable tank mixer

Pine Ridge Job Corps; 15710 US 385, Chadron, Nebraska; 50,000-gallon pedosphere; high-water level of 118 feet, 6 inches and a low-water level of 97 feet, 6 inches

D. Complete Mix: The mixer manufacturer guarantees that the subject tank will be completely mixed by the mixer. In continuous operation of the mixer:

1. at least once per 24 hours all water temperatures within the tank shall converge to within 0.8 degrees C, and

2. at least once per 72 hours all chlorine concentrations within the tank shall converge to within 0.18 mg/l.

E. Fit Through Small Hatch Opening. The mixer shall be capable of fitting through a clear, unobstructed opening of 12” diameter without requiring disassembly or assembly.

F. Continuous Operation With 120VAC, 20 Amp Power Source. The mixer shall operate continuously during day and night while connected to electric grid power.

G. Stainless Steel Construction. The mixer shall be constructed primarily of Type 316 stainless steel metal for strength and superior corrosion resistance.

H. Motor. The mixer shall be mechanically operated by a submersible motor that meets the following criteria.

1. Direct Drive, with no gearbox and no lubrication maintenance required.

2. Designed for submersible operation. Mixer design shall include flow sleeve or housing around motor to provide water flow past motor per submersible motor design criteria to lower the total motor temperature and increase winding life.

3. Designed for Continuous Operation without overheating or compromising motor life expectancy. Constant, full speed operation, variable frequency drive or other method of speed reduction not required and not allowed.

4. 120 VAC, 20 Amp power source shall be supplied by others and not the mixer manufacturer.

I. Exposed Rotating Protection. The mixer shall not have any rotating equipment openly exposed. Rotating shafts, impellers, and motors shall not be openly exposed, and in the event of any part of the mixer exterior contacting the floor or cord, it shall not cause damage to either.

J. Low Elevation Intake: The mixer shall be supplied with an intake capable of being positioned at the lowest elevation of the tank or reservoir floor. The intake level shall bring water into the mixer at horizontal layer within 2 inches of the tank or reservoir floor to prevent hydraulic short circuiting of inflow water through the tank.

K. Restraint System. The mixer shall not require any brackets, penetrations, rope, ties, or fixed connections to the tank or reservoir columns, walls, or floor below the overflow elevation. The mixer shall allow for placement and servicing without requiring tank or reservoir to be drained. The mixer shall not require the use of a diver or diving team to enter the tank or reservoir to complete placement or service of the specified equipment.

L. Functional for All Water Levels. The mixer shall function properly and not be negatively impacted by fluctuating water levels down to 24 inches of water depth.

Devices requiring more than 24 inches of water depth to properly function without damage not allowed.

M. Electrical Control Box. The mixer equipment shall be supplied with a Control Box capable of disconnecting 120 VAC outgoing power to the mixer equipment and meeting the following criteria:

1. NEMA 4 enclosure shall be provided with protection against condensation and moisture in a marine environment.

2. Control Box shall be UL 508 Listed for sound electrical design and safety.

3. Control Box shall include exterior mounted HOA switch, definite purpose contactor for mixer control, exterior display showing green run, red fault indication, and motor operating amperage, grounding lug, 120 VAC standard three-prong male molded plug, and locking latch for security.

4. Control Box shall include configurable open collector outputs for run and fault indication, or 4-20 mA analog output scaled to motor current. Control Box shall include a 24 VDC relay to allow for remote on and off control of the mixer.

Integration of 4-20 mA output and remote on/off relay into site PLC/RTU shall be provided by others and not by the mixer equipment manufacture.

5. Control Box requires a 120 VAC power source, Minimum 20 Amp rated service located near the final placement of the Control Box. SCADA and control functions of the Control Box require 24 VDC incoming power for automatic operation, run and fault indication, and 4-20 mA current output. The 120 VAC and 24 VDC power source shall be supplied by others and not the mixer equipment manufacturer.

N. The complete mixer shall be NSF / ANSI Standard 61 and NSF / ANSI Standard

372 listed for safe contact with potable water. The mixer shall be NSF / ANSI Standard 61 listed to be safely in contact with a potable water volume as low as 5,000 gallons.

O. Maintenance Requirements. The mixer shall operate normally with the following maintenance features.

1. No scheduled lubrication is required of any system components including motor.

2. No spare parts shall be required to be kept on hand.

P. Equipment Support. The mixer manufacturer shall offer full factory support with the following staff and support services.

1. Customer Service, Application Engineering, and Equipment Engineering staff available by email or toll-free phone.

2. Field personnel for placing and servicing the specified mixer.

3. Public website with detailed information available describing the mixer for this project and related applications of this equipment into potable water tanks and reservoirs.

4. Service plans for preventative maintenance and continued technology improvements for the specified mixer.

PART 3 EXECUTION

3.01 FACTORY PLACEMENT

A. Factory Personnel. The placement and startup shall be performed by full time factory employees trained in the operation of the mixer.

B. Safety. Placement and service personnel shall have received job-specific safety training on (a) Working over Water, (b) Boating Safety, (c) Disinfecting Procedures,

(d) Confined Space Entry, (e) Fall Protection, (f) Self Rescue, and (g) DOT Compliance.

C. Safety Equipment. Placement and service personnel shall be equipped with job-specific safety equipment to complete the placement and startup of specified mixer following all OSHA safety regulations. Safety equipment shall include confined space, fall protection, rescue, decontamination, and communication tools such as (air monitor, ventilation fan, tri-pod, winches, FBH’s, retractables, ropes, lanyards, descenders, radios, hard hats, step pools, disinfectant sprayer, etc.)

3.02 STERILIZATION/DISINFECTION

A. Prior to the mixer being installed in the tank, the mixer and any components that will come in contact with the potable water shall be disinfected per AWWA Standard C- 652 Method 2 or Section 5 – Disinfection Procedures when Conducting Underwater Inspection of Potable-Water-Storage Facilities. Equipment used to drill the penetration for the electrical cable shall be disinfected prior to use. In addition, any equipment, including the mixer itself, that will enter the wet portion of the tank shall be disinfected with a heavy dose of chlorine prior to being put into the water.

B. The tank will be dosed by Center staff after installation of the mixer and flushed until the system residual chlorine level is reached. Two samples will be taken by Center staff and delivered to an approved lab to see if the water is bacteriologically safe and can be put into service. The two requisite samples shall be collected at a minimum of a 24-hour interval. If either test is not satisfactory, the tank will be re-sterilized and retested. Center staff will be responsible for the sterilization/disinfection of the storage tank and water quality sampling.

END OF SECTION 33 16 96

W-66-2021 May 21, 2021

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TOP OF FOUNDATION TO HIGH WATER LEVEL

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H.W.L. ELEVATION - 118' 6"

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TOP OF FOUNDATION TO LOW WATER LEVEL

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L.W.L. ELEVATION - 97' 3"

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%%U50,000 GALLON PEDOSPHERE