3.1_Specifications.pdf

USDA FOREST SERVICE PROJECT SPECIFICATIONS

Rev. Date 7/12 Covelo Water Main Replacement 01 90 00 - 1/1 Mobilization Payment Procedures

SECTION 01 90 00

MOBILIZATION PAYMENT PROCEDURES

1. PART 1 - GENERAL

1.01 SUMMARY

A. This work shall consist of preparatory work and operations necessary for the movement of personnel, equipment, supplies, and incidentals to the project site, and for all other work and operations that must be performed or that cause costs to be incurred prior to beginning work on the various items on the project site.

2. PART 2 - PRODUCTS (NOT USED)

3. PART 3 - EXECUTION (NOT USED)

4. PART 4 - MEASUREMENT AND PAYMENT

4.01 PROGRESS PAYMENTS WILL BE MADE AS FOLLOWS:

A. When 5 percent or more of the original contract amount is earned from other pay items, 50 percent of the amount for mobilization, or 5 percent of the original contract amount, whichever is less, will be paid.

B. When 10 percent or more of the original contract amount is earned from other pay items, 100 percent of the amount for mobilization, or 10 percent of the original contract amount, whichever is less, will be paid.

C. Upon completion of all work on the project, any unpaid amount for mobilization will be paid.

D. The total of all payments shall not exceed the original contract amount for this item.

4.02 BASIS OF PAYMENT

A. Payment will be made under:

PAY ITEM DESCRIPTION PAY UNIT

01 90 00 Mobilization Lump Sum

END OF SECTION

USDA FOREST SERVICE PROJECT SPECIFICATIONS

Rev. Date 7/12 Covelo Water Main Replacement 01 80 00 - 1/1 Project Clean Up

SECTION 01 80 00

PROJECT CLEAN UP

1. PART 1 - GENERAL

1.01 SUMMARY

A. This section covers the disposal of excess material and waste from removing and replacing the main water line at the Covelo Ranger Station.

2. PART 2 - PRODUCTS (NOT USED)

3. PART 3 - EXECUTION

3.01 WORKMANSHIP

A. The contractor shall provide refuse containers and proper disposal at weekly intervals for solid wastes generated by Contractor’s employees.

B. All debris, excess soil and unused material shall be removed from the site.

All debris shall be disposed of off national Forest land in accordance with Local, State and Federal regulations. Site shall be restored to as near its original condition as possible.

C. Burning of material is not allowed.

D. At substantial completion, the road and parking area shall be cleaned of all dust and debris.

4. PART 4 - MEASUREMENT AND PAYMENT (NOT USED)

USDA Forest Service PROJECT SPECIFICATIONS

Covelo Water Main Replacement 33 11 13 – 1/8 Water Line and Appurtenances

SECTION 33 11 13

WATER LINES AND APPURTENANCES

1. PART 1 - GENERAL

1.01 SUMMARY

A. This section specifies pipes, fittings, valves, valve boxes, marking tape, locating wire, excavation, bedding and backfill, asphalt patching and disinfection.

1.02 PROJECT CONDITIONS

A. Sanitation facilities shall be provided and maintained at the Contractor’s expense, and shall be provided prior to the commencement date.

B. Equipment and material storage areas must be approved in writing by the Contracting Officer prior to use.

C. The project is within a developed administrative site and the natural conditions of the area must be preserved. The Contractor shall confine all operations to the work area established by the Government and shall restore all disturbed areas to their natural conditions.

D. Contractor shall locate or call for utility locate services prior to excavation.

Utilities damaged during excavation shall be repaired immediately by the Contractor at his/her expense.

E. Water shall be restored to the office and residences at the end of each working day.

1.03 CODES AND STANDARDS

A. In addition to laws, ordinances, codes and regulations of the United States Government the work performed under this section shall meet the requirements of the following:

1. California Plumbing Code 2016 Edition.

2. National Sanitation Foundation (NSF)

3. American society for Testing and Materials (ASTM)

4. International Association of Plumbing and Mechanical Officials

(IAPMO)

5. American Water Works Association (AWWA)

Covelo Water Main Replacement 33 11 13 – 2/8

a. AWWA Manual M20, "Water Chlorination, Principles and Practices.”

b. AWWA Standard C-601-68.

PART 2 - PRODUCTS

2.01 PIPE AND FITTINGS:

A. All materials shall be new, of size, material, and type called for in these specifications and shown on the drawings.

1. Galvanized Steel Pipe: Galvanized steel pipe and fittings shall be standard weight Schedule 40, with 150 pound class fittings, approved for use with potable water.

2. Polyvinyl Chloride (PVC) Solvent weld Pressure Pipe: PVC pipe with a nominal pipe size of 3 inches and smaller shall be solvent weld pressure pipe, Schedule 80. Pipe shall be NSF approved and meet the requirements of ASTM D-1784 and D-1785.

3. PVC Solvent Cements and Primer: Solvent cements and primer for use with PVC pipe shall comply with the Uniform Plumbing Code Installation Standard

4. Polyvinyl Chloride (PVC) Pressure Pipe: PVC pipe with a nominal pipe size of 4 inches and larger shall meet the requirements of AWWA C900. All pipe shall be class 100 rated for 125 psi. Pipe shall be bell end containing a lock-in ring and spigot joint.

5. Pipe Fittings: All change-in-direction fittings and flanges for PVC and galvanized pipe 3 inches and smaller shall be of the same size and material as the pipe it serves. All pipe 4 inches and larger shall make changes in direction with PVC bell end fittings containing a lock-in rings. Fittings shall be of the same size and class as to the pipe it serves.

B. Pipe Thread Sealing Paste: Pipe sealant compound shall be a non-hardening, non-seizing, and non-toxic sealing paste containing TFE- Fluoricarbon approved for use with potable water.

2.02 MARKING TAPE

A. Marking tape shall be 3 inches wide with imprint "Caution - Buried Waterline

Below"; color shall be blue. Tape shall be as manufactured by Calpico Inc., or an approved equal.

Covelo Water Main Replacement 33 11 13 – 3/8

B. Where more than one utility is located in a common trench marking type shall be 6 inches wide with imprint "Caution - Buried Utility Lines Below";

color shall be red.

2.03 LOCATING WIRE

A. Nonconductive water pipe shall have an 18 AWG copper wire with colored insulation to match the APWA Uniform Color Code for Utility marking.

2.04 VALVES

A. Valves and valve boxes shall be new, of size, material and type shown on the drawings or specified herein. All valves shall meet NSF requirements for drinking water systems. All valves shall be equipped with handwheel or other operating devices. Exensions shall be supplied for valves whose standard handle would exceed 12 inches below the top of valve enclosure.

1. Gate Valve (at pump house) – one (3”) shall be bronze body, non-rising stem, wedge disc, threaded connection. Valve shall conform to the requirements of Federal Sepcifications WW-V-54, Class B, Type I.

2. Gate Valve (at laterals) – three (1”) shall be bronze body, non-rising stem, wedge disc, threaded connection. Valve shall conform to the requirements of Federal Sepcifications WW-V-54, Class B, Type I.

3. Gate Valves (fire hose pipe stands) – three cast iron body, bronze trimmed, flanged ends, double disc parallel seat with resilient wedge, rated for minimum operating pressure of 200 psi. Valves shall be fitted with a 2” square x 1 ¾” high operating nut. Supply two 5 foot galvanized steel or iron valve operating rods. Valve size to be determined in the field.

4. Gate Valve (shut-off) – one (3”) shall be cast iron body, bronze trimmed, flanged ends, double disc parallel seat with resilient wedge, rated for minimum operating pressure of 200 psi. Valve shall be fitted with a 2” square x 1 ¾” high operating nut. Supply one 5 foot galvanized steel or iron valve operating rod.

2.05 VALVE BOXES

A. Boxes shall be precast concrete. Boxes shall be traffic rated with H20 cast iron frame and cover. Covers shall be marked "Water". Extensions shall be of the same material and manufacturer as the box unless otherwise specified herein. Size of box shall allow for a minimum of 6 inches clearance on all sides of valve and pipes.

Covelo Water Main Replacement 33 11 13 – 4/8

2.06 BEDDING AND BACKFILL MATERIALS

A. BEDDING MATERIAL: Select backfill for bedding shall consist of fine soil or sand.

B. SELECT BACKFILL: Select backfill for backfilling shall consist of fine soil or sand, without stones or dirt clods larger than 3/8 inch.

C. COMMON BACKFILL: Common backfill shall consist of inorganic material containing no rocks larger than 4 inches.

2.07 DISINFECTING AGENT

A. Disinfecting agent shall be calcium hypochlorite, sodium hypochlorite or elemental gaseous chlorine to produce a stock solution of known strength.

2.08 BITUMINOUS ASPHALT

A. California Department of Transportation, 2015 Specification PG 447-508 asphalt concrete.

PART 3 - EXECUTION

3.01 LOCATE EXISTING UTILITIES

A. Contractor shall locate or call for utility locate services prior to excavation.

Utilities damaged during excavation shall be repaired immediately by the Contractor at his/her expense.

3.02 EXCAVATION

A. Operations shall be in compliance with the requirements and restrictions of

OSHA.

B. All trenches shall be excavated in reasonably close conformity with the lines shown on the Drawings. Any shifting or change from the alignment show on the Drawings must receive prior approval by the COR in writing.

C. Lay utilities in continuous open trench.

D. Trim roots flush with trench wall.

E. If water is encountered during trench excavation, provide adequate pumping equipment and piping to keep trench free from water and dispose of the water without damage to adjacent property. Separate payment will not be made for pumping of water from trenches or for excavation of material rendered unsuitable as a result of water encountered.

F. Pile excavated material at the side of the trench where it will give the best protection for the work. Leave adequate space between the toe of the spoil pile and edge of the trench to prevent material from falling into trench.

Covelo Water Main Replacement 33 11 13 – 5/8

3.03 LAYING PIPELINE

A. Protection of pipe: All pipe and fittings shall be protected during storage and installation to prevent contamination. Care shall be taken during laying and joining to prevent dirt and other objectionable material from entering pipe. Cap or plug lines when work is not in progress.

B. No pipe shall be placed in the trench until the trench subgrade and bedding have been inspected and approved by the Contracting Officer.

C. Pipe installation shall conform with the manufacturer's installation requirements.

PVC pipe shall be cut square to insure proper assembly. PVC gasketed pipe shall be beveled with a plastic pipe pilot beveling tool, hand beveling will not be allowed. Pipe shall be assembled out of the trench and laid in the trench. Dropping pipe into trench after assembly will not be allowed.

PVC spigot end pipe shall be assembled with its spigot ends pointing in the direction of flow. Solvent welded pipe shall be snaked in the trench.

Galvanized steel pipe and low alloy steel pipe, two inches and larger in diameter, shall be aligned in the trench prior to making joints. No pipe shall be bent to make deflections in the line. Only standard elbows, fittings, swing joints, or other suitable means of pipe deflection approved by the Contracting Officer will be allowed. When pipes are installed in a structure, they shall be adequately supported. Pipe sleeves shall be provided for pipes passing through concrete.

D. Valves and other control devices shall be installed in the line where called for on the drawings. All devices shall be installed with unions to allow for ease of removal.

E. Changes in grade and alignment shall be made with appropriate fittings.

The pipe may be bent to the minimum curve radii recommended by the manufacturer. Mechanically joined pipe shall not exceed 5 degrees deflection at the joint. Changes in alignment which cannot be made with standard fittings may be accomplished with swing joints installed so the lines drain. All pipe shall be laid with no sags or crests in gradient.

F. Thrust blocks for pipe sizes 4 inches and larger shall be cast in place concrete and installed at all changes in direction of 45 degrees or more, at stops or dead ends, and at valves. Thrust blocks shall be sized in

Covelo Water Main Replacement 33 11 13 – 6/8 accordance with the pipe munufacturers recommendations and soil conditions.

3.04 BACKFILLING

A. Pipes/pipe zone shall be backfilled with bedding material. Pipe zone shall be considered as 3 inches in any direction of the pipe. Select backfill shall be placed and compacted in 6 inch maximum lifts.

A. Common backfill shall be placed and compacted in 12 inch maximum lifts.

Total backfill over pipe shall be a minimum of 24 inches of cover and top of trench left rounded 3 inches above ground grade, unless pipe is passed under pavement. Marking tape shall be placed above all buried water lines at 6 to 12 inches below finished ground grade.

B. Existing asphalt shall be cut in a straight clean saw cut prior to excavation.

Trim and prime existing asphalt before patching. Asphalt shall be installed as per California Department of Transportation Standard Specifications 2015.

3.05 VALVE INSTALLATION

A. The valve assemblies shall be fabricated, assembled, and installed, in location as shown on the drawings and in accordance with the manufacturer's recommendations. The final assembly, including pipe and fittings, shall be tested and disinfected in accordance herein.

B. Valves shall be installed plumb, and well-spaced from other valves, inside of enclosures, and in such positions that they are readily accessible and can be easily and fully operated and maintained without binding on any part of the plumbing, other valves, other appliances, the enclosure or structure walls. Unless otherwise indicated on the drawings or in vertical lines, valve handles or levers shall be on top.

C. All valves shall be supported and braced as necessary to provide full support and prevent movement during normal operation. It shall be the responsibility of the Contractor to design, fabricate and install the necessary supports and bracing. All valves shall be placed upon a bed of drain rock material, 6 inch maximum thickness.

D. Each valve, its fittings and appurtenances, shall be kept free of dirt or other foreign materials. Each valve shall be tested for leakage and operation during the system tests.

Covelo Water Main Replacement 33 11 13 – 7/8

E. Valve enclosures shall be centered over valves and other appurtenances.

Adequate clearance shall be provided between the enclosure and pipelines, valves and appurtenances. Sectional or stacked units shall be permanently assembled. The enclosures shall be installed in such a manner to prevent settlement or other movement after installation. In final position the box shall be 1/2 inch minimum above surrounding finish grade and there shall be a minimum of 1/2 inch clearance between the box and the pipeline at any point.

3.06 TESTING

A. General: All water lines, their fittings, valves and connections, and all appurtenances and devices constructed and installed under this contract shall be tested. After connection to existing systems, sufficient system testing shall be performed to assure the interconnection is acceptable. All tests shall be made in the presence of the Contracting Officer.

B. Preparation for Testing: Before the start of testing, the Contractor shall clean, inspect and remove all dirt or other foreign materials from all piping, valves, fittings and other appurtenance. All equipment shall be set up and approved by the Contracting Officer before testing begins.

C. If it is believed that foreign material may be in the line, all valves on the line shall be thoroughly flushed, and carefully inspected after flushing, to see that the entire operating mechanism of each valve is in good condition.

D. Preliminary tests: Preliminary testing of parts of piping and appurtenance shall be done as soon as possible after construction or installation, and in all cases before joints are concealed or otherwise enclosed within other work constructed under this contract.

E. Testing: All water pipelines, valves, appurtenances, tanks and the like shall be tested for water tightness, to no discernable leakage for 1 hour. Water and other pressure lines, at a minimum pressure of 125 psi or the operating pressure plus 20 pounds, whichever is greater. Failures shall be repaired or replaced, and testing done until acceptance is reached.

3.07 DISINFECTION METHOD

A. After being tested and before being placed into service, the entire potable water system shall be disinfected with chlorine. The system shall be filled with a chlorine solution of 50 parts per million chlorine and left to stand a minimum of 24 hours.

C. After 24 hours, the water in the system shall be tested. If the free chlorine residual is under 25 parts per million, the system shall be drained and

Covelo Water Main Replacement 33 11 13 – 8/8 disinfected again as described above. This process shall continue until a 25 parts per million residual free chlorine count is obtained after a 24 hour period.

3.08 FINAL FLUSHING

A. Following chlorination, all treated water shall be thoroughly flushed from the newly laid waterline. Flushing shall continue until the free available chlorine level is one milligram per liter or less. Bacteriological samples shall be taken from the hose bibb following disinfection to test the effectiveness of the process. Samples shall be processed by a State Certified Lab and lab results presented to the Contracting Officer's Representative within 48 hours.

PART 4 - MEASUREMENT AND PAYMENT

4.1 METHOD OF MEASUREMENT

A. Measurement will be lump sum.

4.2 BASIS OF PAYMENT

A. Payment will be made under:

PAY ITEM DESCRIPTION PAY UNIT

33 11 13 Waterline and Appurtenances Lump Sum

4. Part 4 - measurement and Payment (Not used)