A04_SOW_DEVA_309189_2021_0303.pdf

Statement of Work DEVA Fire Hydrant Cyclic Maintenance

PMIS #309189

Furnace Creek/Cow Creek Developed Area

Death Valley National Park January 7, 2021

Part 1: Scope/Background/Objective

1.1 Scope of Work

Perform cyclic replacement of 22 fire hydrants in the Furnace Creek and Cow Creek developed areas in Death Valley National Park. Work is to be performed by contract in concert with park staff.

1.2 Background

Park staff and visitors depend on functioning fire hydrants for structural fire protection. There are 7 fire hydrants in the Furnace Creek area, and 15 fire hydrants in the Cow Creek area. These hydrants have no maintenance records on file, although all hydrants are identified as currently operable.

Summer daytime temperatures can reach 125° F while overnight temperatures often remain above 100° F.

These high temperatures combined with corrosive soils lead to premature deterioration of wear components in utility systems including fire hydrants. Therefore, a fire hydrant cyclic replacement is paramount to providing structural fire protection.

1.3 Objective

Ensure the water delivery for structural fire protection is functional and effective for staff and visitor safety at Death Valley National Park.

Part 2: Contract Items

2.1 Equipment Summary

A. Fire Hydrants:

1. Locations: See attached maps

2. Existing condition: See attached photographic documentation. No maintenance records are on file.

B. Water Line Depths: Water line depths in the Furnace Creek and Cow Creek area range from an estimated 3 ft to 6 ft.

2.2 Tasks & Supplies

A. Refer to the attached General Specifications and Hydrant Specification 15300.

B. Replace fire hydrants complete including, but not limited to, excavation, backfill, materials, and labor.

C. Confine operations to an area within a 10’ radius of the hydrant or existing roadways and streets.

D. Concurrent vegetation/sediment removal will be performed by park staff in conjunction with contractor work.

E. Park staff will make water system shut‐offs as necessary.

F. Park water distribution system is considered to be fragile due to environmental conditions. Extreme care shall be taken to limit the stress on existing underground piping and connections when performing the scope of work.

G. Upon completion of work on each hydrant, perform flow test.

2.3 Contract Period and Schedule

A. The contract performance period is to be 9 calendar months from Notice to Proceed.

B. Contractor shall be required to submit for review and approval a schedule as identified in the General Specifications.

C. The park is required to notify residents or building occupants in advance of any utility outage.

Therefore, the contractor’s approved schedule shall be strictly adhered to in performance of the work.

Esri, HERE, Garmin, iPC | USDA FSA, Maxar

Furnace Creek and Cow Creek Fire Hydrants - FURNACE CREEK HYDRANT LOCATION MAP CC_FC Hydrants 12

300ft

Furnace Creek and Cow Creek Fire Hydrants - COW CREEK HYDRANT OVERVIEW LOCATION MAP

0.2mi

Furnace Creek and Cow Creek Fire Hydrants - COW CREEK HOUSING HYDRANT LOCATIONS

Furnace Creek and Cow Creek Fire Hydrants - COW CREEK MAINTENANCE/ADMIN HYDRANT LOCATIONS

DEVA PMIS: 309189 GENERAL SPECIFICATIONS

GENERAL SPECIFICATIONS

Fire Hydrant Cyclic Replacement – DEVA 309189

Death Valley National Park

1/7/2021

PART 1 - GENERAL

1.1 SUMMARY

A. This Section includes administrative and procedural requirements.

1.2 GENERAL SUBMITTAL PROCEDURES

A. Processing Time: Allow 14 days from when the Contracting Officer’s Representative receives a submittal by email from the Contractor. When the submittal review is completed an e-mail notification will be sent to the Contractor. No extension of the Contract Time will be authorized because of failure to transmit submittals enough in advance of the Work to permit processing, including re-submittals.

B. Approved Equals:

1. For each item proposed as an “approved equal,” submit supporting data, including:

a. Comparison of the characteristics of the proposed item with that specified.

b. Name, address, and telephone number of vendor.

c. Manufacturer’s literature.

C. Electronic Submittals: Transmit all submittals except color samples in .pdf format with form DSC-16. Format all submittals such that they are legible when printed at 11x17 size.

D. Physical samples: Deliver the COR with form DSC-16

E. Identification: Submittal number or other unique identifier, including revision identifier.

1. Submittal number shall use a sequential number (e.g., .001). Re-submittals shall include an alphabetic suffix after another decimal point (e.g., .001.A).

F. Re-submittals: Make re-submittals using the same process used with the initial submittal.

1. Note date and content of previous submittal.

2. Note date and content of revision in the title block on the CM-16E and clearly indicate the extent of revision.

3. Re-submit submittals until they are marked “Approved” or “Approved with notations”.

1.3 CONTRACTING OFFICER’S ACTION

A. General: Submittals will be disapproved without technical review if identification information is missing, not filled in, or if placed on the back of the submittal; an incorrect format of submittals is provided; the transmittal form is incorrectly filled out; submittals are not coordinated; or submittals do not show evidence of Contractor’s approval.

1. Any work done or orders for materials or services placed before approval shall be at the Contractor’s own risk.

B. ACTION SUBMITTALS: Contracting Officer will review each submittal, generate comments on corrections or modifications required, and indicate the appropriate action on the CM-16E Transmittal Form. The submittal will be marked in one of three ways as defined below:

1. APPROVED: Acceptable with no corrections.

2. APPROVED WITH NOTATIONS: Minor corrections or clarifications required. All comments are clear and no further review is required. The Contractor shall address all review comments when proceeding with the work.

3. DISAPPROVED - RESUBMIT: Rejected as not in accordance with the contract or as requiring major corrections or clarifications. The Contracting Officer will identify the reasons for disapproval. The Contractor shall revise and resubmit with changes clearly identified.

C. INFORMATIONAL SUBMITTALS: Contracting Officer will review each Informational Submittal and will either accept or reject it. Prepare and submit the following Informational Submittals:

1. Schedule of Values: After contract award and before the Pre-Construction conference submit a schedule of dollar values (SOV) based on the Contract Price Schedule, in accordance with the following:

a. Breakdown each lump-sum item into component work activities used in the schedule, for which progress payments may be requested. The work activities broken out within the schedule of values shall be correlated to the construction baseline schedule submitted under this specification. The total costs for the component work activities shall equal the contract price for that lump-sum item. The Contracting Officer may request data to verify accuracy of dollar values. Include mobilization, general condition costs, overhead and profit in the total dollar value of unit price items and in the component work activities for each lump-sum item.

b. Do not include mobilization, general condition costs, overhead, or profit as a separate item. These costs must be distributed among individual SOV line items appropriately.

c. The total cost of items under a Contract Line Item shall equal the Contract Line Item price. The total cost of all Contract Line Items shall equal the contract price. The Schedule of Values will form the basis for progress payments.

d. Component parts of work shall be broken down into sufficiently discrete items to allow for tracking and use in preparing progress payments.

e. An acceptable Schedule of Values shall be agreed upon by the Contractor and Contracting Officer before the first progress payment is processed.

2. Construction Baseline Schedule: After contract award and before the Pre-Construction conference, submit the baseline schedule, large enough to show entire schedule for entire construction period.

a. Prepare Construction Baseline Schedule using a computerized, time-scaled critical-path method network analysis diagram for the Work.

b. Failure to include any work item required for performance of this Contract shall not excuse Contractor from completing all work within applicable completion dates, regardless of Governments acceptance of the schedule.

c. Activities: Indicate the estimated duration, sequence requirements, and relationship of each activity in relation to other activities.

d. Critical Path Activities: Identify critical path activities, including those for interim completion dates.

e. Work Stages: Indicate important stages of construction for each major portion of the Work. Include as applicable: Subcontract awards, Submittals, Purchases, Fabrication, Deliveries, Installation, Tests and inspections, Adjusting.

f. Recovery Schedule: When periodic schedule update indicates the Work is twenty or more calendar days behind the current accepted schedule, a separate recovery schedule indicating means by which Contractor intends to regain compliance with the schedule must be submitted.

3. Construction Schedule Updates: Submit electronically with each payment request, showing current status and any required schedule changes.

1.5 ACCIDENT PREVENTION

A. General. Contractor must submit certification that contractor possesses a current, OSHA compliant safety program to which the Contractor shall require all employees, subcontractors, and visitors to adhere to.

1. Equipment or tools not meeting OSHA requirements will not be allowed on the project.

2. Comply with contract clause entitled "Accident Prevention".

3. In case of conflicts between Federal, State, and local safety and health requirements, the most stringent shall apply.

4. Failure to comply with the requirements of this section and related sections may result in suspension of work

B. ACCIDENT REPORTING: A project reportable accident is defined as death, occupational disease, traumatic injury to employees or the public, fires, and property damage by accident in excess of $100. Notify Contracting Officer immediately in the event of a reportable accident.

Within 7 days of a reportable accident, fill out and forward to Contracting Officer an Accident/Property Damage Report (Form CM-22). Form may be obtained from the Contracting Officer.

C. SAFETY MEETINGS: Prior to beginning work, have a safety meeting with all personnel and the COR to review the jobsite safety requirements. As a minimum, Contractor shall also conduct daily 15-minute "toolbox" safety meetings.

D. FIRE AND LIFE SAFETY: Comply with the requirements of NFPA 241 (Standard for Safeguarding Construction, Alteration, and Demolition Operations). No smoking within 50 ft of buildings.

E. SITE ACCESS: The site is located in the Cow Creek Maintenance/Administrative/Housing area and the Furnace Creek area of Death Valley National Park on CA-190.

F. ACCESS RESTRICTIONS: Normal work hours at Maintenance/Administrative sites are 6am- 4:30pm. Normal work hours in housing areas are 8am-4:30pm. After Hours Work Requests must be submitted to the CO a minimum of 48-hours in advance and require approval in advance.

1.6 QUALITY REQUIREMENTS

A. General. This Section includes administrative and procedural requirements for quality assurance and quality control. Testing and inspecting services are required to verify compliance with requirements specified or indicated. These services do not relieve Contractor of responsibility for compliance with the Contract Document requirements. The quality of all work shall be the responsibility of the Contractor.

B. Standards: If compliance with two or more standards is specified and the standards establish different or conflicting requirements for minimum quality levels, comply with the most stringent requirement. Refer uncertainties and requirements that are different, but apparently equal, to Contracting Officer for a decision before proceeding.

C. Contractor's Quality Control Daily Reports: Submit showing all inspections and tests on the first workday following the date covered by the report. Quality Control Supervisor shall utilize the forms attached at the end of this Section.

D. If the Quality Control Daily Reports are not submitted as specified, the Contracting Officer may retain payments for work completed on days there are no Quality Control Daily Report.

E. Permits, Licenses, and Certificates: Contractor is responsible for obtaining all permits, and possessing any required licenses and certificates. For NPS records, submit copies of permits, licenses, certifications, inspection reports, releases, jurisdictional settlements, notices, receipts for fee payments, judgments, correspondence, records, and similar documents, established for compliance with standards and regulations bearing on performance of the work.

A. Manufacturer's Field Services: Where indicated or considered standard practice in the industry, engage a factory-authorized service representative to inspect field-assembled components and equipment installation, including service connections. Report results in writing. Submit report not later than one calendar day after the inspection was performed.

B. Off-Site Inspection: Items that are fabricated or assembled off-site shall be inspected for quality control at the place of fabrication.

C. Quality Control Process:

1. Notification: Notify the Contracting Officer at least 48 hours in advance of the preparatory phase meeting.

2. Preparatory Phase: Perform before beginning each feature of work.

a. Review submittals, including manufacturer’s installation recommendations, with personnel directly responsible for quality assurance and quantity control of the work.

b. Review all applicable specifications sections and drawings related to the feature of work.

c. Ensure that provisions have been made for field control testing.

d. Examine the work area to ensure that all preliminary work has been completed.

e. Verify all field dimensions and advise the Contracting Officer of discrepancies with contract documents.

f. Ensure that necessary equipment and materials are at the project site and that they comply with approved shop drawings and submittals.

g. Document all preparatory phase activities and discussions on the Contractor's

Quality Control Daily Report.

3. Follow-Up Phase:

a. As soon as work begins, inspect and test a representative portion of a particular feature of work for quality of workmanship.

b. As work progresses, periodically inspect and test to ensure compliance with contract requirements.

c. Document all phase activities on the Contractor's Quality Control Daily Report.

4. Enforcement: The Contractor shall stop work on any item or feature pending satisfactory correction of any deficiency noted by the quality control staff or the Contracting Officer.

1.7 QUALIFICATIONS OF EMPLOYEES:

1. All employees must be physically qualified and able to perform their assigned duties in a safe manner.

2. Do not allow employees to perform work whose ability or alertness is impaired because of prescription or illegal drug use, fatigue, illness, intoxication, or other conditions that may expose themselves or others to injury.

3. Operators of vehicles, manlifts, etc. shall be able to understand signs, signals, and operating instructions, and be fully capable of operating such equipment. Provide operating instructions for all equipment. Newly hired operators shall be individually tested by an experienced operator or supervisor to determine if they are capable of safely operating equipment.

END OF GENERAL SPECIFICATIONS

PART 2 - CONTRACTOR'S QUALITY CONTROL DAILY REPORT

REPORT NO. _________ SHEET 1 OF _________

PROJECT

CONTRACT NO.

DATE

PARK

CONTRACTOR'S REPRESENTATIVE ON THE JOB

WEATHER (Rain, Snow, Cloudy, Windy, etc.)

RAINFALL

Inches

TEMPERATURE GROUND CONDITIONS (Dry, Damp, Wet, Frozen, etc.)

MAX.

MIN.

1. PRIME CONTRACTOR

NO. EMPLOYEES BY JOB CATEGORIES Hours HEAVY EQUIPMENT ON

JOB

NO.

UNITS

HRS. WORKING

YES NO Comments

WORK PERFORMED BY PRIME CONTRACTOR:

MATERIALS DELIVERED OFFICIAL VISITORS TO SITE

2A. SUBCONTRACTOR, _____________________________________________: (If more than one subcontractor use copies of following page.)

NO. EMPLOYEES BY JOB CATEGORIES Hours HEAVY EQUIPMENT ON

JOB

NO.

UNITS

WORK PERFORMED BY SUBCONTRACTOR:

3. SPECIFIC INSPECTIONS: (Inspections performed, results, and corrective actions)

4. TESTING: 1 Check if any testing was performed today. (Complete and attach Test Report Information Sheets.)

Type and Location of Testing: ____________________________________________________________________________________

5. VERBAL INSTRUCTION RECEIVED FROM GOVERNMENT ON CONSTRUCTION DEFICIENCIES OR RE-TESTING

REQUIRED:

6. REMARKS:

7. CERTIFICATION:

I certify that the above report is complete and correct and that I, or my authorized representative, have inspected all work performed this day by the prime contractor and each subcontractor and determined that all materials, equipment, and workmanship are in strict compliance with the plans and specifications except as may be noted above. ____________________________________________________________ Contractor's Quality Control Representative

SUBCONTRACTOR WORK CONTINUED:

CONTRACT NO. REPORT NO. _______

SHEET ____ OF ____

2 SUBCONTRACTOR,

NO. EMPLOYEES BY JOB CATEGORIES Hours HEAVY EQUIPMENT ON

JOB

NO.

UNITS

2 SUBCONTRACTOR,

JOB

NO.

UNITS

JOB

NO.

UNITS

JOB

NO.

UNITS

YES NO COMMENTS

DAILY TEST REPORT INFORMATION SHEET

CONTRACT NO._________________________ REPORT NO. _____________

SHEET _____ OF _________

1. Individual Making Inspection or Test:

2. Testing Laboratory; Name: Phone #:

Address:

3. Description of Work and Test Method:

4. Location of Samples and Tests or Inspections:

5. Specification Section:

6. Inspection or Test Data:

7. Test Results and Interpretations of Test Results:

8. Comments or Professional Opinion About Compliance of Inspected Work or Tested Work with contract Document Requirements:

9. Recommendations:

10. Corrective Actions Taken:

CERTIFICATION:

I certify that the above testing report is complete and correct and that all testing performed this day for this contract is in strict compliance with the plans and specifications except as noted above.

Signature of Inspector

Project:

Contract No.: Date:

To:

cc:

From:

Subject:

Please provide the following information or clarification:

Response required by ___\____\____

Date:

To:

From:

Subject:

REQUEST FOR INFORMATION # __

DEVA 309189 - Replace Fire Hydrants at Cow Creek and Furnace Creek

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Date To Contractor: r03/10

CM-16 TRANSMITTAL FORM - NATIONAL PARK SERVICE

Park: PMIS No.: Contract No.: Date: Transmittal No.:

Sheet: 1 of:

Title: Date:

Contractor's Signature:

I hereby certify that this submittal has been reviewed for accuracy, completeness, and compliance with contract requirements (FAR 52.236-21)

Review Comments:

Action Submittal

Informational Submittal

Contractor: NPS ACTIONSubcontractor / Supplier:

Recommended by:

Date Received: Distribution: 1 copy each: CMR Interim, A/E, DSC, Contr.

Title: Date:

Title: Date:

Action by:

Approval of this submittal is subject to the provisions of the contract drawings and specifications. This action is for general concurrence only and the government is not responsible for errors or omissions

DEVA 309189DEVA REPLACE FIRE HYDRANTS AT COW CREEK

AND FURNACE CREEK

CONTRACTOR'S QUALITY CONTROL DAILY REPORT

REPORT NO. _________ SHEET 1 OF _________

PROJECT CONTRACT NO. DATE

PARK CONTRACTOR'S REPRESENTATIVE ON THE JOB

WEATHER (Rain, Snow, Cloudy, Windy, etc.)

RAINFALL

Inches

TEMPERATURE GROUND CONDITIONS (Dry, Damp, Wet, Frozen, etc.)

MAX. MIN.

1. PRIME CONTRACTOR

NO. EMPLOYEES BY JOB CATEGORIES Hours HEAVY EQUIPMENT ON

JOB

NO.

UNITS

HRS. WORKING

YES NO Comments

WORK PERFORMED BY PRIME CONTRACTOR:

MATERIALS DELIVERED OFFICIAL VISITORS TO SITE

2A. SUBCONTRACTOR, _____________________________________________: (If more than one subcontractor use copies of following page.)

NO. EMPLOYEES BY JOB CATEGORIES Hours HEAVY EQUIPMENT ON

JOB

NO.

UNITS

HRS. WORKING

YES NO Comments

WORK PERFORMED BY SUBCONTRACTOR:

3. SPECIFIC INSPECTIONS: (Inspections performed, results, and corrective actions)

4. TESTING: 1 Check if any testing was performed today. (Complete and attach Test Report Information Sheets.)

Type and Location of Testing: ____________________________________________________________________________________

5. VERBAL INSTRUCTION RECEIVED FROM GOVERNMENT ON CONSTRUCTION DEFICIENCIES OR RE-TESTING

REQUIRED:

6. REMARKS:

7. CERTIFICATION:

I certify that the above report is complete and correct and that I, or my authorized representative, have inspected all work performed this day by the prime contractor and each subcontractor and determined that all materials, equipment, and workmanship are in strict compliance with the plans and specifications except as may be noted above. ____________________________________________________________

Contractor's Quality Control Representative

REPLACE FIRE HYDRANTS AT COW CREEK AND FURNACE CREEK

DEVA 309189

SUBCONTRACTOR WORK CONTINUED:

CONTRACT NO. REPORT NO. _______

SHEET ____ OF ____

2 SUBCONTRACTOR,

NO. EMPLOYEES BY JOB CATEGORIES Hours HEAVY EQUIPMENT ON

JOB

NO.

UNITS

JOB

NO.

UNITS

JOB

NO.

UNITS

JOB

NO.

UNITS

YES NO COMMENTS

DAILY TEST REPORT INFORMATION SHEET

CONTRACT NO._________________________ REPORT NO. _____________

SHEET _____ OF _________

1. Individual Making Inspection or Test:

2. Testing Laboratory; Name: Phone #:

Address:

3. Description of Work and Test Method:

4. Location of Samples and Tests or Inspections:

5. Specification Section:

6. Inspection or Test Data:

7. Test Results and Interpretations of Test Results:

8. Comments or Professional Opinion About Compliance of Inspected Work or Tested Work with contract Document Requirements:

9. Recommendations:

10. Corrective Actions Taken:

CERTIFICATION:

I certify that the above testing report is complete and correct and that all testing performed this day for this contract is in strict compliance with the plans and specifications except as noted above.

Signature of Inspector

3/3/2021

SPECIFICATION 15300 – FIRE HYDRANTS

DEATH VALLEY NATIONAL PARK SPECIFICATIONS

SECTION 15300 FIRE HYDRANTS

PART 1 GENERAL

1.01 DESCRIPTION

This section includes the materials for and installation of fire hydrant assemblies.

1.02 REFERENCE STANDARDS

The publications listed below form part of this specification to the extent referenced and are referred to in the text by the basic designation only. Reference shall be made to the latest edition of said standards unless otherwise called for.

AWWA C502 - Dry-Barrel Fire Hydrants AWWA C550 - Protective Epoxy Interior Coatings For Valves and Hydrants

1.03 RELATED WORK SPECIFIED ELSEWHERE

Refer to General Specifications.

1.04 SERVICE APPLICATION

A. Dry-barrel hydrants shall be used.

1.05 DELIVERY, STORAGE AND HANDLING

Fire hydrants shall be delivered and stored in accordance with AWWA C210, AWWA C213, and AWWA C550. The port openings shall be covered with plastic, cardboard or wood while in transit and during storage in the field. These covers shall remain in place until the valve is ready to be installed. Fire hydrants shall not be stored in contact with bare ground. Fire hydrants shall not be stacked.

1.06 WARNING/IDENTIFICATION TAPE

Warning/Identification tape shall be installed for fire hydrant assemblies in accordance with Section 15000.

PART 2 MATERIALS

2.01 HYDRANTS

A. Dry-barrel fire hydrants shall comply with AWWA C502 and these specifications unless otherwise approved through the submittal process.

B. The interior of ductile-iron hydrants shall be fusion-epoxy lined per AWWA C550.

C. All outlets shall be provided with National Standard Fire-Hose Threads. Outlets shall be equipped with brass or ductile iron caps with chains.

D. Basis of Design:

1. The Mueller A-423 Super Centurion or A-442 Modern Centurion

2. Size of Hydrant: 5-1/4”

3. Type of Inlet Connection: Flange - American Standard complying to ANSI/ASME

B16.1 Class 125 and ISO PN10/16 (4” & 6").

4. Opening Direction: Left

5. Operating Nut: 1-1/2" Pentagon

6. Upper Barrel: 3-way

7. Hose Nozzle Size: 2-1/2" NST

8. Pumper Nozzle Size: 5" Storz (integrated Storz connection directly on the hydrant, rather than a threaded nozzle with a Storz adapter added later)

9. Paint Color: Red (NFPA color code for hydrants that output <500gpm)

10. Drains: Open

2.02 BOLTS AND NUTS

A. Bolts and nuts shall be zinc-plated A307 carbon steel, or, for bonnet nozzle and caps, as specified by the hydrant manufacturer.

2.03 CONCRETE

Minimum 3000 psi, per approved submittal.

2.04 WARNING/IDENTIFICATION TAPE

Warning/Identification tape materials shall be in accordance with industry standards.

2.05 FIELD PAINTING AND COATING

Field touch-up painting and coating materials shall be in accordance with industry standards and approved submittals. Color shall be RED.

2.06 DISINFECTION AGENT - CHLORINE

A. Liquid Chlorine complying with AWWA B300 and AWWA B301.

B. Sodium Hypochlorite complying with AWWA B300.

C. Calcium Hypochlorite complying with AWWA B300.

D. All disinfecting agents to be NSF 60 certified. Supply and store in the original container.

PART 3 EXECUTION

3.01 GENERAL

A. Fire hydrant assemblies shall be installed at locations shown on the attached site maps.

B. Fire hydrant flange bolts shall be set with nuts on top. Torque nuts uniformly and progressively in accordance with the manufacturer’s recommendations. Fill the hollow bolt shafts of break-away bolts with silicone sealant.

C. Upon completion of installation of fire hydrant, it shall be tested and disinfected.

D. The hydrant shall be set in a truly vertical position and securely braced until the backfilling is completed. The space around the lower portion of the hydrant shall be backfilled with 2-inch washed drain rock. Drain rock shall be wrapped with geotextile filter fabric on all sides and top. The remainder of the excavation shall then be filled with native material (provided it is free of cobbles or other deleterious soils), well tamped around the hydrant so that no uneven pressure is brought to bear upon the stem

3.02 CONCRETE

Fire Hydrants shall be set on a firm foundation and shall be thrust blocked. Thrust blocking shall consist of concrete cast against the fittings and the undisturbed earth on the side where the thrust is expected to occur. A minimum of ¼ cu yd (0.2 cu m) of concrete shall be used for the thrust blocks. The dimensions of the thrust block shall be as required to fill the void between undisturbed earth and the hydrant. Blocking shall be placed such that the pipe, fittings and joints shall be accessible for future repair.

3.03 WARNING/IDENTIFICATION TAPE

Warning/Identification tape shall be installed before backfilling any pipe segments.

3.04 SEQUENCE OF TESTING AND DISINFECTION

Perform operations according to AWWA C651 in the sequence below. Successfully complete each operation before continuing to the next operation.

A. Continuous-Feed or Slug Method (After Water Main Installation): The sequence of testing and disinfection may only be modified with approval of the Contracting Officer.

1. Perform initial flush.

2. Perform disinfection.

3. Flush after disinfection.

4. Perform pressure and leak testing.

3.05 INITIAL FLUSHING

A. Flushing:

1. Coordinate flushing with the park utility operations.

2. Flush hydrant prior to disinfection using potable water.

3. Measure flushing velocity and obtain a minimum flushing velocity of 3 feet per second in the hydrant supply piping.

B. Minimum Flushing Rate: According to AWWA C651, Table 3, based on 40 psi residual pressure (see table below).

Table 5030.01: Minimum Flushing Rate

Pipe Diameter (inches)

Flow Rate for Flushing (gpm)

Number of Taps2 Number of 2 1/2” Fire Hydrant Outlets1 1” 1 1/2” 2”

4 120 1 - - 1 6 260 - 1 - 1 8 470 - 2 - 1

10 730 - 3 2 1 12 1,060 - - 3 2 16 1,880 - - 5 2

1With a 40 psi pressure in the main with the fire hydrant flowing to atmosphere, a 2 1/2 inch fire hydrant outlet will discharge approximately 1,000 gpm; and a 4 1/2 inch fire hydrant outlet will discharge approximately 2,500 gpm.

2Number of taps on pipe based on discharge through 5 feet of galvanized iron pipe with one 90° elbow.

C. Property Protection: Protect public and private property from damage during flushing operations. Provide energy dissipation devices on all flushing discharges.

3.06 DISINFECTION

A. General:

1. Disinfect according to AWWA C651.

2. Keep piping to be chlorinated isolated from lines in service and from points of use.

3. Coordinate disinfection and testing with the Contracting Officer.

4. Obtain and test water samples.

B. Procedure:

1. Induce a flow of potable water through the pipe.

2. Introduce highly chlorinated water to the pipe at a point within 5 pipe diameters of the pipe's connection to an existing potable system, or within 5 pipe diameters of a closed end, if there is no connection to an existing system.

3. Introduce water containing a minimum of 25 mg/L free chlorine until the entire new pipe contains a minimum of 25 mg/L free chlorine.

4. Retain chlorinated water in the pipe for at least 24 hours and no more than 48 hours.

3.07 FINAL FLUSHING

A. Flush pipe using potable water until chlorine residual equals that of the existing potable water system.

B. Dispose of chlorinated water to prevent damage to the environment.

Dechlorinate highly chlorinated water from testing before releasing into the ground or sewers. Obtain Jurisdiction approval prior to flushing activities.

3.04 HYDROSTATIC TESTING

Fire hydrant assemblies shall be hydrostatically tested in conjunction with the pipeline to which it is connected.

3.05 FIELD PAINTING AND COATING

The fire hydrant exterior shall be field painted in accordance with paint manufacturers recommended application instructions.

SECTION 01 40 00 - QC Report Form

Specification 15300 - Fire Hydrants 2021_0303 Final