Mussellshell WC-SUPP SPECS 3-10-10.pdf

FOREST SERVICES

SUPPLEMENTAL SPECIFICATIONS

for

MUSSELLSHELL WORK CENTER

WATER SYSTEM IMPROVEMENTS

USDA - Forest Service

Clearwater National Forest

12730 Highway 12

Orofino, ID 83844

Submitted by: James M. Grubb, P.E.

Date: 3/10/2010

SECTION 01010 - SUMMARY OF WORK

PART 1 - GENERAL

1.1 LOCATION OF PROJECT

A. Project work is located at Mussellshell Work Center, Idaho County, Idaho, in the

Clearwater National Forest. Mussellshell Work Center is located approximately 39 miles east of Orofino, Idaho. From Orofino, Idaho travel approximately 8 miles via

Highway 12 to Greer, Idaho then approximately 18 miles via Highway 11 to Weippe, Idaho then approximately 13 miles to the work center by Forest Highway 100 and 535.

1.2 DESCRIPTION OF WORK

A. Furnish all labor, materials, equipment, supervision, and transportation necessary to remove an existing building and the interior plumbing. Install a concrete utility building that will house a new captive air tanks, iron filtration system, controls, valving, piping and electrical controls to operate the existing well pump.

B. The major items of work include the following:

1. Remove and dispose of an existing wooden building and all interior plumbing.

2. Install galvanized steel pipe, ball valves, unions, pressure guage, pressure switch, vacuum valve, water meter, sample tap, hose bibb, check valve, captive air tank, iron filtration system, including the filter drain and appurtenances inside the concrete utility building.

3. Install a 10’ x 14’ GFP concrete building.

4. Installation of new HDPE and galvanized pipe to the existing distribution system.

5. Installation of electrical service conductors and interior electrical system.

C. The general layout and the details of the required work are shown on the construction drawings.

1.3 START OF WORK

A. It is anticipated that work will begin approximately September 15, 2010.

1.4 CONTRACT TIME

A. Work shall be completed no later than 45 calendar days after effective date of NOTICE

TO PROCEED.

1.5 NOTIFICATION

A. Notify CO of intent to begin work at least ten (10) days in advance.

01010-1

1.6 SUBMITTALS

A. It shall be the Contractor's responsibility to submit all items with such promptness as to cause no delay in the work. Approvals must be obtained before starting work which involves the item. The Contractor shall allow 10 business days for processing of submittals by the Government.

B. Manufacturer's Literature: Submit 3 copies to the CO for approval on the items required herein. Literature shall be marked or otherwise designated to indicate the exact model, size, etc., the Contractor proposes to use. Information shall be adequate to determine compliance with the specifications without additional research by the CO.

One copy of approved submittals will be returned to Contractor.

C. Provide manufacturer's literature on the following:

1. HDPE piping and fittings

2. Galvanized steel piping and fittings

3. Valves, gauges, switches

4. Water meter

5. Captive air pressure tank

6. Iron filtration system

7. Electric panel

8. Control panel

1.7 SCHEDULES

A. Furnish one (1) copy each of the following items after award of contract for review and/or approval pursuant to contract provisions:

1. Proposed progress schedule showing starting and completion dates of various phases of the work.

2. List of proposed subcontractors and their intended work. Sub-contractors must have the Contracting Officer's (CO) written approval prior to work on the project.

1.8 GOVERNMENT FURNISHED PROPERTY (GFP)

A. The Government shall supply a 10’ x 14’ concrete building from CXT Corporation, Spokane, Washington. The building will be stored at CXT until such time the the contractor makes arrangement to have the building delivered and set.

1.9 SAFETY PRECAUTIONS

A. Provide suitable signs, barricades, temporary fencing, etc. to provide for public safety and prevent access to the project site.

1.10 DISPOSAL SITE

A. Project waste materials shall be removed from the project site and disposed of at an approved sanitary landfill, or other acceptable disposal site. No burning of construction materials or debris will be allowed at the project site. Unsuitable excavated material maybe disposed of at location determined by the CO.

01010-2

1.11 CLEANUP

A. Maintain the project work area in a clean and orderly condition throughout the progress of work under this contract.

1.12 STORAGE OF MATERIALS

A. The Contractor will be allowed to store materials at the project site. Coordinate the location of the storage area with the CO. Materials subject to damage from the weather shall be adequately protected by the Contractor. The Contractor shall be solely responsible for the loss of or damage to materials stored at the job site.

1.13 NOXIOUS WEED CONTROL

A. In order to reduce the potential spread of noxious weeds onto National Forest System lands, the contractor will be required to clean all construction equipment that operates off existing roads prior to the equipment entering the National Forest boundary. The cleaning shall remove all dirt and plant parts that may carry noxious weed seeds inside the National Forest boundary.

B. The Contractor shall notify the CO at least one (1) working day in advance of planned equipment delivery to get agreement on the location of where the cleaning will occur, and schedule a time for inspection by the Forest Service.

01010-3

SECTION 01200 - MOBILIZTION PAYMENT PROCEDURES

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.

PART 2 – PRODUCTS (NOT USED)

PART 3 – EXECUTION (NOT USED)

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

01200(01) Mobilization Lump Sum

END OF SECTION

01200-1

SECTION 02220 - BUILDING DEMOLITION

1.01 SUMMARY

A. This Section includes demolition and removal of the existing water system control building.

1.02 DEFINITIONS

A. Remove: Detach items from existing construction and legally dispose of them off-site unless indicated to be removed and salvaged or recycled.

1.03 SUBMITTALS

A. Schedule of Building Demolition Activities: Indicate detailed sequence of demolition and removal work, with starting and ending dates for each activity, interruption of utility services, and locations of temporary protection and means of egress.

B. Predemolition photographs: Show existing conditions of adjoining construction and site improvements, which might be misconstrued as damage caused by building demolition operations. Submit before Work begins.

C. Landfill Records: Indicate receipt and acceptance of hazardous wastes by a landfill facility licensed to accept hazardous wastes.

1.04 PROJECT CONDITIONS

A. Government assumes no responsibility for buildings and structures to be demolished.

B. Hazardous Materials: It is not expected that hazardous materials will be encountered in the Work.

C. If materials suspected of containing hazardous materials are encountered, do not disturb; immediately notify the CO. The Government under a separate contract will remove hazardous materials.

1.05 COORDINATION

A. Arrange demolition schedule so as not to interfere with the Government’s employees on-site operations.

PART 3 - EXECUTION

3.01 EXAMINATION

A. Survey existing conditions and correlate with requirements indicated to determine extent of building demolition required.

3.02 PREPARATION

A. Existing Utilities: Locate, identify, disconnect, and seal or cap off indicated utilities serving buildings and structures to be demolished.

02220-1

B. Arrange to shut off indicated utilities with utility companies.

C. Cut off pipe or conduit a minimum of 24 inches below grade. Cap, valve, or plug and seal remaining portion of pipe or conduit after bypassing.

D. Existing Utilities: Do not start demolition work until utility disconnecting and sealing have been completed and verified in writing.

3.03 DEMOLITION, GENERAL

A. General: Demolish indicated building completely. Use methods required to complete the Work within limitations of governing regulations and as follows:

1. Do not use cutting torches until work area is cleared of flammable materials.

Maintain portable fire-suppression devices during flame-cutting operations.

2. Maintain adequate ventilation when using cutting torches.

3.04 SITE RESTORATION

A. Site Grading: Uniformly rough grade area of demolished construction to a smooth surface, free from irregular surface changes. Provide a smooth transition between adjacent existing grades and new grades.

3.05 REPAIRS

A. General: Promptly repair damage to adjacent construction caused by building demolition operations.

B. Where repairs to existing surfaces are required, patch to produce surfaces suitable for new materials.

C. Restore exposed finishes of patched areas and extend restoration into adjoining construction in a manner that eliminates evidence of patching and refinishing.

3.06 DISPOSAL OF DEMOLISHED MATERIALS

A. Remove demolished materials from Project site and legally dispose of them in an

EPA-approved landfill.

B. Do not allow demolished materials to accumulate on-site.

C. Remove and transport debris in a manner that will prevent spillage on adjacent surfaces and areas.

D. Burning: Do not burn demolished materials.

E. Disposal: Transport demolished materials off Government property and legally disposes of them.

3.07 CLEANING

A. Clean adjacent structures and improvements of dust, dirt, and debris caused by building demolition operations. Return adjacent areas to condition existing before building demolition operations began.

02220-2

PART 4 - MEASUREMENT AND PAYMENT

The accepted quantities will be paid for at the contract unit price for each Pay Item shown below and in the Schedule of Items.

Payment will be made under:

Pay Item Description Pay Unit

02220(01) Building Demolisiton Lump Sum

02220(01) The building demolition will be paid for under this Pay Item. Measurement will be made when the existing pump house building, interior plumbing and electrical are removed from the work center and disposed off of National Forests Lands.

END OF SECTION 02221

02220-3

SECTION 02221 - TRENCHING, BACKFILLING, AND COMPACTING

1.1 RELATED WORK IN OTHER SECTIONS

A. Water Lines and Appurtenances - Section 02510.

1.2 CODES AND REGULATIONS

A. All work shall comply with the rules and regulations of Federal, State, and local agencies having jurisdiction, including OSHA and Workman's Compensation Board.

1.3 REFERENCE POINTS

A. Maintain all reference points. If disturbed or destroyed, replace as directed by the

Contracting Officer (CO).

1.4 PROTECTION OF WATER COURSES

A. Contractor shall take precautions to prevent sediment from entering water courses as a result of Contractor's operations.

1.5 APPROVALS REQUIRED

A. Notify CO when excavation is completed and prior to placing pipe or backfill material.

B. Do not place backfill until installation of pipe has been approved by the CO.

PART 2 - PRODUCTS

2.1 BACKFILL MATERIALS

Backfill material to contain no frozen or organic material.

A. Bedding Material - Fine soil or sand, without stones or dirt clods larger than 1/2-inch.

May be excavated material free from rubbish, and litter, or imported material from a commercial source. Pea gravel is an acceptable alternative.

B. Select Excavated Material - Excavated material with no rocks larger than 6 inches in largest dimension.

C. Crushed Rock – Nominal 3/4-inch minus crushed rock containing no foreign material

(AASHTO M147 grading D).

D. Drain Rock - 1-inch washed, rounded.

E. Iron Filter Drain Rock – 3” to 6” diameter

02221-1

3.1 CLEARING

A. There is very little clearing required in this project.

3.2 TRENCH EXCAVATION

A. Excavate trench only when piping is available on site for installation and required testing.

B. Trim roots flush with trench wall.

C. The trench shall be excavated in reasonably close conformity with the line shown on the drawings. Any shifting or change from the alignment shown on the drawings must receive prior approval by the CO in writing.

D. Excavate to provide minimum cover of 48 inches over top of water lines, unless otherwise shown on the drawings.

E. Sub-excavate a minimum of 4 inches below invert of the pipe when trench bottom or lower 12-inches of trench side wall contain rocks over 1-inch in maximum dimension.

F. If water is encountered during trench excavation, provide adequate pumping equipment and piping to keep trench free from water. Dispose of water by methods that will not impact water courses. Separate payment will not be made for pumping of water from trenches.

3.3 OVER-EXCAVATION

A. Restore to grade by backfilling with select excavated material. Backfill material and compaction of unauthorized over-excavation shall be completed at the Contractor's expense.

3.4 BEDDING OF PIPING

A. Installation of piping shall be approved by the CO prior to backfilling.

B. A minimum of 4-inches of bedding material shall be placed below and above the pipes, as a cushion layer for the pipes.

C. Fine-grade the bedding for pipe lines with hand tools so pipe will free-drain by gravity to drain(s) shown on the drawings.

3.5 BACKFILLING OF PIPING

A. The pipe shall be uniformly and continuously supported over its entire length on firm stable material.

B. Bedding material shall be placed to a loose depth of 6-inches above the top of the pipe and hand tamped.

C. Backfill remaining depth of trench with select excavated material.

02221-2

3.6 COMPACTION OF TRENCHES

A. Bottom of trench and bedding shall be hand-tamped. Compaction of remaining backfill by placing material in 12-inch lifts or less and compacting each lift with three

(3) passes with the tamper. Backfill material shall be neatly mounded over the trench.

The number of tamper passes required may be reduced upon acceptance by the CO, if approved test method results demonstrate that the backfill compaction meets or exceeds the density of the natural ground adjacent to the trench. Any such testing shall be performed at the Contractor's expense.

3.7 SURFACE GRADING

A. After completion of backfilling, fine grade with hand tools or equipment as required to provide a smooth transition with adjacent undisturbed material.

3.8 DISPOSAL OF EXCESS OR UNSUITABLE EXCAVATION

A. Excess or unsuitable excavated material shall be uniformly spread adjacent to the excavation or disposed at the site determined by the CO.

02221-3

SECTION 02510 - WATER LINES AND APPURTENANCES

1.1 SCOPE

A. This section covers the buried potable water lines and appurtenances to be installed under this contract.

1.2 SUBMITTALS

A. Submit to the Contracting Officer (CO) for approval 3 copies of manufacturer's literature on the following:

1. HDPE Pipe

2. Galvanized Steel Pipe

3. Coupling and Fittings

4. Valves

1.3 QUALITY ASSURANCE

A. Piping materials shall bear label, stamp, or other markings of specificed testing agency.

B. Comply with NSF 14 for plastic potable-service piping. Including marking “NSF-pw” on piping.

1.4 SYSTEM PERFORMANCE REQUIREMENTS

A. Minimum Working Pressures: The minimum pressure requirements for piping and specialties for potable-water service is 30 psig and the maximum pressure is 50 psig.

1.5 DELIVERY, STORAGE, AND HANDLING

A. Deliver piping with factory-applied end-caps. Maintain end-caps through shipping, storage, and handling to prevent pipe end damage and to prevent entrance of dirt, debris and moisture.

B. Protect flanges, fittings, and specialties from moisture and dirt.

C. Store plastic piping protected from direct sunlight. Support to prevent sagging and bending.

02510-1

2.1 HIGH DENSITY POLYETHYLENE (HDPE) PIPE AND FITTINGS

1. Pipe

1. HDPE plastic pipe shall be PE-3408 as defined in ASTM D1248, with a minimum cell classification of 345464C in accordance with ASTM D3350. The pipe shall be SDR11, 160 psig minimum pressure rating and comply dimensionally with

ASTM D3035. 4100 Series Bluestripe.

2. Pipe shall be manufactured in accordance with AWWA C901 for sizes ½-inch through 3-inch.

3. The joining method shall be butt fusion method and shall be performed in strict accordance with the pipe manufacturer’s recommendations. Butt fusion equipment used in the joining procedures shall be capable of meeting all conditions recommended by the pipe manufacturer, including but not limited to, temperature requirements, alignment, and fusion pressures. Ribbed steel inserts with stainless steel clamps are not approved for HDPE pipe.

B. Fittings

1. HDPE fittings shall be made from material meeting the same requirements as the pipe.

2. Molded fittings shall be manufactured in accordance with either ASTM D2683 for socket fused or ASTM D3261 for butt fused and shall be so marked.

3. All HDPE fittings shall have the same or higher pressure rating and compositions.

2.2 COUPLINGS FOR SIMILAR OR DISSIMILAR PIPE

A. Compression type transition fittings for making connections between like and dissimilar pipe materials shall be designed to enable a variety of connections between polyethylene pipe to various pipes. Fittings shall be Cepex performance series compression fittings as manufactured by Cepex Holding, S.A. and distributed by The

Lateral Connection Corp., Sparks, NV 89434 (775) 626-6777 or approved equal and supplied by Ferguson Waterworks, Denver, CO, (303) 571-4444 or approved equal.

2.3 GALVANIZED STEEL PIPE (GSP) AND FITTINGS

A. Pipe

1. Galvanized steel pipe and fittings shall be galvanized Schedule 40, ASTM A53.

2. Threaded ends shall meet requirements of ASME B1.20.1.

B. Fittings

1. ASTM A53, Schedule 40.

2. For threaded ends use Teflon thread sealing tape.

2.4 INSECT SCREEN

A. 24-mesh woven wire cloth, non-corrodible.

1. Brass, bronze or stainless steel standard grade type 304.

02510-2

2.5 GALVANIZED WOVEN WIRE CLOTH

A. 4 X 4 meshes per inch, 0.047 inch wire diameter.

2.6 JOINTS BETWEEN DISSIMILAR MATERIALS

A. For metallic to plastic pipe connections, use prefabricated fittings with metallic coupling fittings. Do not thread plastic pipe.

2.7 MARKING TAPE

A. Heavy-gauge plastic with metalized foil core for underground detection with commercially available pipe locators. Marking tape minimum 2-inches wide, imprinted with "CAUTION: BURIED WATERLINE BELOW", “CAUTION:

BURIED ELECTRICAL LINE BELOW” or similar message as appropriate. Blue, or other color approved by the CO. "Detectatape" by Allen Systems or approved equal.

2.8 TRACER WIRE

A. Nonconductive water pipe shall have an 12 awg copper wire with blue insulation placed in the trench adjacent to the water line. Provide wire ends accessible for connection at ends of the pipe.

3.1 PIPE ALIGNMENT AND GRADE

A. Construct the water system to the lines and grades shown or established in the field.

B. Stake locations of water lines as shown on the drawings. The Contracting Officer

(CO) shall approve the water line location prior to the start of excavation.

C. The CO shall have the locations of the campground hydrants staked.

D. Water system shall be constructed to drain by gravity to system drains for winter campground shutdown. Waterlines shall be constructed to drain at a minimum grade of 0.5% unless indicated on the drawings. Waterlines not meeting this requirement shall be removed by the Contactor and replaced at no cost to the Government.

E. Pipelines may be relocated slightly, if necessary, to avoid existing obstacles.

F. Deflections from a straight line or grade, as required by vertical curves, horizontal curves, or offsets, shall not exceed the manufacturer's recommended maximum joint deflection or curvature for their pipe. If the alignment requires curvature or deflections in excess of these limitations, the Contractor shall provide special bends, standard fittings, or a sufficient number of shorter lengths of pipe to provide angular deflections at the joints within the limit set forth by the manufacturer.

G. Bends resulting in tension on joints will not be allowed.

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H. Pipe sizes as shown on the drawings. Valves and unions shall be line size.

3.2 GENERAL

A. All pipe, fittings, and appurtenances shall be handled and laid in strict conformance to the manufacturer’s recommendations.

B. Drains, valves, and other regulating and controlling devices shall be installed in the line where called for on the drawings.

C. The interior of all pipe, fittings, and other accessories shall be kept as free as possible from dirt and foreign matter at all times. Each piece of line as it is laid shall be cleaned of all debris. When the pipeline has become dirty on the inside during shipment or storage, it shall be swabbed out by drawing a damp swab through the line before lying. Care shall be exercised to keep all joining surfaces clean. Any pipe with contaminated or damaged joining surfaces, which cannot be satisfactorily cleaned or repaired, shall be discarded. Under no circumstances shall pipe be laid in water, and no pipe shall be laid when trench conditions or the weather is unsuitable for such work. At all times when work is not in progress, all open ends of the pipe and fittings shall be securely closed to the satisfaction of the CO so that no trench water, rodents, earth, or other substance will enter the pipe or fittings.

D. Any section of pipe already laid and found to be defective shall be taken up and replaced with new pipe at the Contractor’s expense.

E. When sewer and water lines cross, the water and sewer pipes shall be centered at the crossing so that the joints will be an equal distance and as far as possible from the crossing. When sewer lines are less than 10 feet horizontally from water lines or if they are less than 18-inches lower than waterlines, encase the joints of the sewer lines in concrete.

F. Where water line crosses a road culvert, adjust grade of water line to provide a minimum of 12 inches of separation between the water line and culvert, maintaining slope of water line to daylight drain.

G. A minimum of one-foot horizontal separation shall be maintained between electric and water lines in the same trench. The water line shall be a minimum of one foot below the electric conductors.

H. Bury piping with depth of cover over top a minimum of 48-inches.

I. Clearing for construction of pipeline is minimal, and is incidental to the individual construction items. No separate payment will be made. Dispose of removed debris as described in Section 01010.

02510-4

3.3 CUTTING AND HANDLING OF PIPE

A. Cutting of pipe for closure pieces or for other reasons shall be done in a neat manner by methods which will not damage the pipe. The pipe and fittings shall be handled in such a manner as to insure delivery and final placement in good, undamaged condition.

Particular care shall be exercised not to injure the pipe surfaces or coatings. Damaged pipe shall not be used in the work.

3.4 LAYING PIPE

A. No pipe shall be placed in the trench until the CO has approved the trench and bedding.

B. Each section of the pipe shall rest upon the pipe bed for the full length of its barrel.

C. Backfill the pipe within 24 hours after installing the pipe in the trench, leaving the joints and one foot of pipe on each side of each joint exposed until testing is complete.

D. When work is not in progress, securely close open ends of pipe and fittings.

3.5 HDPE PIPE INSTALLATION

A. Install HDPE pipe according to ASTM D 2774 and ASTM F 645.

3.6 JOINT CONSTRUCTION

A. Joints shall be made using jointing materials and applied with the proper accessories, in accordance with the manufacturer’s instructions. The joints shall be adjusted and the work performed in a manner so as to obtain the degree of water tightness required. If pipe and fittings are assembled with lubricant, it must be nontoxic. Where connections are made between new work and existing lines, the connections shall be made by using special fittings to suit the actual conditions.

B. Threaded Joints:

1. Thread pipes with tapered pipe threads according to ASME B1.20.1, apply tape or joint compound, and apply wrench to fitting and valve ends into which pipes are being threaded.

2. Exposed threaded pipe joints on galvanized steel pipe shall be painted with mastic following the manufacturer’s application procedures.

3. Field cut ends shall be squared off by grinding or filing; ends shall be reamed with all chips and flakes removed.

4. Field cut threads or machined joints shall be made with sharp tools to sharp finished ends.

C. HDPE Heat-Fusion Joints

1. According to ASTM D 2657 and piping manufacturer's written instructions.

2. The joining method shall be butt fusion method and shall be performed in accordance with the pipe manufacturer's recommendations. Butt fusion equipment

02510-5 used in the joining procedures shall be capable of meeting all conditions recommended by the pipe manufacturer, including but not limited to, temperature requirements, alignment, and fusion pressures.

3. Personnel trained in butt fusion techniques by the manufacturer of the pipe, shall supervise or perform butt fusion operations.

4. Butt fusion shall be performed between pipe ends or pipe ends and fitting outlets, of like outside diameter and wall thickness, SDR or DR. Butt fusion joining between same diameters but unlike wall thickness shall not be permitted. Transitions between unlike wall thickness shall be made with a transition nipple (a short length of the heavier wall pipe with one end machined to the lighter wall) or by mechanical means.

D. Dissimilar Materials Piping Joints

1. Polyethylene pipe and fittings may be joined to other materials by means of couplings designed for joining polyethylene pipe to another material. Couplings shall be fully pressure rated and fully thrust restrained such that when installed in accordance with manufacturer’s recommendations, a longitudinal load applied to the coupling will cause the pipe to yield before the coupling disjoints.

2. Use adapters compatible with both piping materials, OD, and system working pressure.

3.7 TRACER WIRE

A. Tape tracer wire to water line at a maximum interval of 20-feet.

B. Clamp tracer wire to outlet drains, hydrants, and curb stops valves with ground clamps sized for pipe at appurtenance.

3.8 SYSTEM DRAIN

A. Transition from water system piping to galvanized steel pipe as shown on the drawings.

B Install insect screens on the atmospheric outlet of system drains. Attach insect screens to pipe with stainless steel hose clamps.

C. Minimum grade of slope of drain shall be 1%.

D. Outlet with a minimum 12-inch air gap.

3.9 FINAL PIPE CLEANING AND FLUSHING

A. Before testing, clean new water distribution piping systems by high pressure water jet or mechanical means.

B. During the flushing operation, operate all valves, hydrants, hose bibs and other outlets.

C. Flush system with clean potable water until dirty water does not appear at points of outlet.

02510-6

3.10 PRESSURE TESTING WATERLINES

A. After the pipe is laid, the joints completed, and the trench partially backfilled, leaving the joints exposed for inspection, the newly laid piping or any valved section of piping shall be subjected to a hydrostatic pressure test as listed below.

B. The Contractor shall furnish the pump, pipe, gauge, measuring device, connections, and all other necessary apparatus, and shall furnish the necessary personnel to conduct the tests. All equipment, gauges, and attachments shall be subject to approval by the CO.

C. The CO shall be present during the testing period.

D. Test all newly constructed portions of the water system, including water mains, service lines, fittings, valves, and hydrants. New waterlines shall be tested at the test pressure specified here unless the CO specifies another pressure. Pneumatic testing will not be allowed.

E. CAUTION: SEALED DIAPHRAGHM TYPE PRESSURE TANKS MUST BE

ISOLATED FROM THE SYSTEM DURING PRESSURE TESTING TO

PREVENT POSSIBLE DAMAGE TO THE DIAPHRAGHM FROM OVER

PRESSURE. DISCONNECT TANKS AT UNIONS OR CLOSE VALVES AT

EACH TANK.

F. Use only potable water.

G. Test Procedure

1. Slowly fill each valve or plugged test section of pipe with water. The line shall be filled by means of a pump connected to the pipe. Operate all hydrants and taps to bleed entrapped air from the test section. Operate the pump continuously during bleeding operations. The pump shall take suction from a small auxiliary tank for measuring the water pumped into the test section.

2. Raise the internal pressure of the system by pumping in water. Increase pressure in 50-psig increments and inspect each joint between increments. Raise internal pressure to a test pressure of 1.5 times the working pressure or 75 psig at the point of testing based on the elevation of the lowest point of the line or section under test, or other test pressure as approved by the CO.

3. The system should be allowed to stabilize for 3 hours at the test pressure before conducting the hydrostatic test. Additional liquid may be added during this time to return to test pressure.

4. After obtaining the approved test pressure record the water level in the auxiliary tank.

5. Immediately following the initial expansion phase, reduce the test pressure by 10 psi, and stop adding test liquid. If the test pressure remains steady for one (1) hour, no leakage is indicated.

H. Leakage shall be verified by the Contractor and the CO.

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I. No leakage is allowed, the Contractor shall, at his own expense, locate and replace any defective pipe, fittings, valves, joints, and hydrants as required, until all leakage has stopped. All visible leaks are to be repaired regardless of the amount of leakage. Flush the system, and repeat the pressure test until leak is repaired.

J. No paints, asphalts, tars, enamels, or other types of pipe compounds shall be used to eliminate leaks.

K. Backfill for waterlines shall be completed after the CO approves testing.

L. The Contractor shall furnish a written report to the CO describing the results of each test. The report must identify the specific portions of the pipeline tested, the pressure, the duration of the tests, and the amount of leakage.

3.11 DISINFECTION OF WATERLINES

A. Disinfection by chlorination shall be performed after flushing and pressure testing are completed and approved by the CO.

B. Dosage: Provide chlorine solution with approximately 10 mg/l of total chlorine for disinfecting the water system unless otherwise directed by the CO.

C. Procedure: The entire system including the well shall be filled with the disinfecting solution. Chlorine solution shall be placed in the system, at a location approved by the

CO. All taps, hydrants, and other outlets shall be opened and left open until chlorine is noticeable by odor or testing in the water coming from each. Immediately close taps, hydrants, and other outlets. An effort shall be made to limit the amount of chlorinated water discharged from the taps, hydrants and other outlets. Heavily chlorinated water shall not be drained into streams, rivers, or lakes; rather open first those drains and hydrants that permit the longest travel time for the solution to reach surface waters.

D. Test Period:

1. Chlorinated water shall remain in the system a minimum of 24-hours, after which the system shall be examined by the CO for residual chlorine. Chlorine residual at the end of the 24-hour period shall be a minimum of 2 mg/1.

2. If the minimum residual is not found present, the system shall be drained and the disinfection testing shall be repeated. When disinfection is complete and approved by the CO, the system shall be flushed with potable water and the water leaving the lines shall have a free residual chlorine concentration no higher than 1 mg/l.

E. Bacteriological Examination: After the system has been disinfected as specified, the CO shall test the water for bacteriological contamination from representative points in the system. The coliform organisms shall be tested for presence/absence in accordance with

State drinking water regulations. If coliform bacteria are present, testing shall be repeated in accordance with State drinking water regulations. If the report of this examination is unsatisfactory, the system shall be flushed and the disinfection procedure repeated until the results of bacteriological examinations are satisfactory.

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F. The satisfactory quality of water delivered by the waterline should continue for a period of at least two full days, as demonstrated by laboratory examination of samples taken from taps along the system.

G. Bacteriological testing of the water system will be the responsibility of the Forest

Service.

H. Repeat disinfection of the water system shall be the responsibility of the Contractor with no additional expense to the Government.

02510(01) Water line, HDPE – 2 inch Lineal Feet

02510(01) The actual linear feet of water line installed will be paid for under this Pay Item.

Measurement will be made through the centerline of pipe and fittings. Payment will be for excavation, backfill, compaction, water line (HDPE and Galv.), sleeves, drains, fittings.

Valves and valve boxes shall be paid when assembly is installed, testing and disinfection.

02510-9

SECTION 13900 - PRECAST CONCRETE UTILITY BUILDING

A. This section includes specifications for a precast concrete water system control house building.

B. Location and orientation of building shall be as shown on the drawings and as staked on the ground by the CO.

1.2 RELATED WORK IN OTHER SECTIONS

A. Wellhead, Submersible Pump, and Mechanical Work - Section 15146.

B. Electrical Work - Section 16440.

2.1 PRECAST CONCRETE BUILDING

A. The precast concrete pump house will be Government Furnished Property. The building will be a CXT Schweitzer building and will be located at the CXT Incorporated yard in

Spokane, Washington.

2.2 SUB-BASE MATERIAL

A. ¾ inch crushed rock.

3.1 EXCAVATION AND BACKFILL

A. Location: Location and orientation shall be as shown on the drawings and as staked by the CO.

B. Clearing: Clearing of brush will be required.

C. Protection: Protect existing trees and other vegetation, not to be removed, from damage.

D. Disposal: Dispose of grubbed material and excess excavated material on-site at location designated by the CO.

E. Excavation:

1. Sub-excavate to allow placement of base material as shown on the drawings.

13900 – 1

F. Backfill:

1. Compact the bottom of the excavation prior to placing the ¾ inch sub-base.

3. Place ¾ inch sub-base material in 6-inch lifts. Mechanically compact each lift as required by CXT requirement and approved by CO. Prepare smooth and level surface to receive pump house.

4. Set building in place as per CXT requirements. Verify level installation. Adjust as required.

5. Complete backfilling around building with excavated material. Complete finish grading to provide drainage away from the building and a smooth transition with surrounding undisturbed material.

13900(01) Precast Concrete Utility Building Lump Sum

13900(01) Payment will be for the sub-base and setting of the building on the site.

END OF SECTION 13900

13900 – 2

SECTION 15146 - WELLHEAD

A. This section covers work at the existing wellhead. Work includes installation of a new submersible pump power cable, grouting, and related plumbing.

1.2 CODES

A. All work shall be in accordance with the latest edition of the Uniform Plumbing Code.

2.1 SUBMERSIBLE PUMP AND CONTROL BOX

A. Existing four-inch, 1.5 HP, 230 VAC, Gould 10LS single phase, pumping rate of 11 gallons per minute.

B. Install pump control box with overload relay, suitable for three-wire pump as recommended by pump manufacturer.

C. Install surge protection in the pump control box for voltage surges of 500 volts or more.

Red Jacket Watt-Knot surge arrestor or equal.

2.2 SUBMERSIBLE PUMP CABLE

A. Four-wire cable, all conductors No. 12 stranded copper with type RW, RUW, TW, or

TWU insulation, suitable for use with submersible pumps. One conductor will be used for ground connection to pump motor frame.

3.1 PITLESS ADAPTER

A. After installation of the water line to the pitless adapter, and submersible pump power cable, the well casing shall be backfilled to existing ground elevation. The excavated area around and within 2-feet of the well shall be backfilled with a 50-50 mixture of pure bentonite and clay. This backfill material shall be compacted in 6-inch lifts with a minimum of two (2) passes with a whacker-type compactor or equivalent method.

B. Backfill of excavation with select excavated material in 6-inch loose lifts and compact with a minimum of two passes with a whacker-type mechanical compactor or equivalent approved by the CO.

15146 – 1

C. Bentonite Seal: During backfill of the casing, place bentonite chips around the casing to provide a surface seal. The bentonite shall extend from below the existing pitless adapter to within six inches of finish grade.

D. Grading: Shape final backfill material to slope away from the well.

E. Existing Casing: Height of the casing shall be 18 inches above finish grade. Clean the exposed well casing. Paint the exposed well casing with two coats of alkyd enamel.

Color selection by CO.

PART 4 – MEASUREMENT AND PAYMENT

A. The method of measurement will be as designated in the SCHEDULE OF ITEMS.

B. The accepted quantities will be paid for at the contract unit price for the Pay Items shown below and in the SCHEDULE OF ITEMS.

15146(01) Wellhead Lump Sum

Measurement will be made of the lump sum job to provide all required plumbing at the wellhead.

C. Payment will be made at the lump sum price on the SCHEDULE OF ITEMS for the job completed and accepted.

15146 – 2

SECTION 15420 - PLUMBING EQUIPMENT

1.1 DESCRIPTION

A. This section specifies the furnishing and installing of the equipment inside the concrete utility building.

1.2 SUBMITTALS

A. Manufacturer's certification of compliance with these specifications.

1.3 CODES

A. All work shall be in accordance with the latest edition of the Uniform Plumbing Code.

2.1 CAPTIVE AIR TANK AND CONTROLS

A. Captive Air Tank: Sealed diaphragm type, equal to Well-X-Trol Model WX-250.

B. Pressure Switch: Model FSG-2, Square D or approved equal. Standard setting of 30-50 psi.

C. Pressure Relief Valve: 75 psi rated, ¾-inch size, Watts No. 53.

D. Pressure Gauge: 2-inch size, 0-100 psi, steel, ¼-inch NPT.

2.2 HOSE BIBB OR DRAIN VALVE

A. Bronze Body, ¾-inch threaded inlet, ¾-inch standard male hose threaded outlet.

2.3 BALL VALVE

A. Bronze body, bronze or chrome-plated bronze ball, BUNA-N or TEFLON seat, lever handle. Rated 200 psi WOG.

2.4 WATER METER

A. Disc type with bronze body, frost proof meeting AWWA C 700. Register in U.S.

gallons, straight reading, 1-inch (flow estimated less than 15 gpm). Provide all-bronze straight meter couplings on both sides (1-in. MIP x meter swivel nut).

2.5 SAMPLE TAP

A. ½-inch threaded inlet, brass or chrome finish, and smooth nosed outlet, equal to Chicago

Faucet No. 4.

15420-1

2.6 CHECK VALVE

A. Body: Iron or semi-steel.

B. Pressure Rating: 125 pound.

C. Trim. Bronze, with center guided post and resilient seat.

D. Spring: Stainless steel.

E. End Connections. Threaded.

2.7 AIR AND VACUUM RELIEF VALVE

A. Equal to APCO No. 141, ½-inch.

2.8 IRON FILTRATION SYSTEM

A. Existing iron test results range from 0.55 to 0.60 mg/L.

B. Iron filtration system to reduce iron test concentrations to below the action limit of 0.3 mg/L. Iron filtration system to be a potassium permanganate (greensand) system or approved equal.

C. Submit proposed filtration system for approval from the CO prior to purchase.

D. Submit layout plan to the CO for review.

E. Backwash Drain System:

1. 500 gallon drywell, similar to Wilbert Precast, Inc. 500 gallon drywell (#1803) or approved equal.

2. Drywell cone (#1801) or approved equal.

3. 4-inch cast iron rim and lid (#1218)

4. Rock – 3 to 6-inch round.

3.1 INSTALLATION

A. Install equipment and valves at the locations shown on drawings.

3.2 CAPTIVE AIR TANK INSTALLATION

A. Install captive air tank where shown on the drawings, in accordance with manufacturer's recommendations.

B. Install tank in vertical position.

C. Install threaded unions, hose bibbs and line-size ball valve at tank connection.

D. Install valves, water meter, hose bibb, sample tap, pressure switch, air/vacuum relief valve and pressure gauge as shown on the drawings.

E. Adjust tank air pressure as recommended by manufacturer for the intended operation.

F. Startup: Operate pump until discharge is free of rust, sediment, etc. before opening valves to pressure tank.

3.3 OPERATIONAL SEQUENCE

A. Pump operation shall be controlled by the pressure switch. Set the pressure switch to operate between 30-50 psi.

15420-2

3.4 OPERATIONAL TEST

A. After installation of the pressure tank, iron filtration system, related plumbing and electrical equipment is completed, Contractor shall perform an operational test of all systems.

B. Verify watertight installation of all work completed under this contract.

C. Verify proper operation of the pump controls. Complete adjustments as required.

D. Fine-tune pressure switch cut-in setting as needed to eliminate any momentary drop in system pressure from the time pressure tank is empty and the pump starts.

PART 4 MEASUREMENT AND PAYMENT

4.1 The method of measurement will be as designated in the Schedule of Items.

4.2 The accepted quantities will be paid for at the contract unit price for each pay item shown

15420(01) Plumbing Equipment Lump Sum

Measurement will be made of the lump sum job to provide and install the captive air tank, iron filtration system and controls, all of the required plumbing in the concrete utility building and other miscellaneous work and materials required for a completed installation.

15420-3

SECTION 16400 – ELECTRICAL SYSTEM

1.1 DESCRIPTION

A. Work under this section includes installation of underground electrical circuits to concrete utility building, and well pump; electrical controls for the well pump and pressure tank; electric heater and miscellaneous electrical circuits in the pump house.

1.2 QUALITY ASSURANCE

A. Codes and Standards:

1. Comply with these specifications, project drawings, and all applicable local, State, and national laws, codes, standards, and regulations. In the event of differing requirements, the most stringent applies.

2. All work shall be in accordance with the requirements of the National Electrical

Code, NFPA 70, latest edition.

3. Comply with NFPA 101, Life Safety Code, latest edition.

B. Inspections and Fees:

1. Inspection and approval by the State Electrical Inspector will be required prior to acceptance of the project by the Government.

2. The Contractor is responsible for obtaining, paying for all necessary State permits, and inspections.

C. Workmanship:

1. Install all materials and equipment in strict compliance with manufacturer's recommendations and in a clean and workmanlike manner.

2.1 CONDUIT AND FITTINGS

A. Rigid Galvanized Steel Conduit (RGSC) - ANSI C80.1. Fittings UL 514, threaded type.

Split couplings are not acceptable.

B. Fittings - Galvanized steel, iron, or copper-free aluminum. Bushings shall be insulated.

Grounding bushings shall be insulated, with pressure type lugs.

C. Electrical Metallic Tubing (EMT) - ANSI C80.3, with compression fittings.

D. PVC Conduit - Schedule 40 and 80, UL listed. Fitings NEMA TC3.

16400 – 1

E. Flexible Metal Conduit - Galvanized steel, UL 1. Fittings UL 514.

2.2 LOAD CENTER IN PUMP HOUSE

A. Main lugs, indoor rated, 120/240 VAC, single phase, three wire, 50 amp, minimum 6 spaces, equal to Square D QO6-12L100S (surface mount with hinged cover) with ground bar kit.

2.3 CIRCUIT BREAKERS

A. 120/240 VAC, 10,000 AIR, QO plug-on type by Square D or equal.

B. Circuits

1. Submersible well pump: two-pole, 20 amp breaker.

2. Lighting/outlet: Single pole, 20 amp breaker with GFCI.

3. Heater: two-pole, 20 amp breaker.

2.4 CONDUCTORS

A. All conductors shall be copper. Insulation shall be THHN/THWN or XHHW for all conductors except submersible pump cable and type USE or UF cable or conductors.

2.5 ELECTRIC HEATER

A. 240 Volt single phase, 3 KW unit heater. Qmark MUH-03-21 or approved equal.

2.6 LIGHT FIXTURE

A. 75W incandescent, vaportight, with cast aluminum guard, equal to Stonco VN1GC.

2.7 DEVICES

A. Light Switch: Surface mount toggle switch with weatherproof box and cover.

B. Duplex Receptacle: GFCI device with weatherproof box and cover. Surface mount.

3.1 WIRING METHOD

A. The wiring method used shall be conductors in raceway.

B. Conduit and equipment shall be surface mounted.

16400 – 2

3.2 CIRCUITS (CONTROL BUILDING)

A. Circuits shall be as follows:

1. Pressure switch circuit: No. 12 copper in ¾-inch EMT and flexible metal conduit.

2. To well casing: No. 12 copper in 1-inch Sch. 80 PVC. Four (4) conductors required (two phase, one starting, one ground).

3. Pump house lighting/outlet: No. 12 copper in ½-inch EMT.

4. Service grounding electrode conductor: No. 4 copper.

B. Ground Conductors: All circuits shall include a separate copper ground conductor, same size as the power conductors.

3.3 GROUNDING AT PUMP HOUSE

A. Install ground rod at pump house. A No. 8 copper grounding electrode conductor shall be run from the load center to the ground rod, and shall also be connected to galvanized steel water piping and a ground tap at the top of the well casing.

B. The load center ground bar and neutral bar shall be isolated from each other. Bond the source ground conductor to the load center ground bar. Verify ground bar is bonded to the enclosure.

C. All grounding must be continuous and provide for a low impedance path to ground.

D. All branch circuits shall include a separate No. 12 copper ground conductor.

E. Pump Motor Ground: Install equipment ground conductor to pump motor frame. This ground shall also pass thru the ground tap at top of well casing.

3.4 FIXTURES AND DEVICES

A. Light Fixture: Mount to ceiling at center of building.

B. Light Switch: Mount 48 inches above floor.

C. GFCI Receptacle: Mount 48 inches above floor.

3.6 OPERATIONAL CHECK

A. Verify that all electrical equipment and controls function as intended.

B. Complete adjustments as required.

16400 – 3

A. The method of measurement will be as designated in the SCHEDULE OF ITEMS.

B. The accepted quantities will be paid for at the contract unit price for the Pay Items shown below and in the SCHEDULE OF ITEMS.

16440(01) Electrical System Lump Sum

Measurement will be made of the lump sum job to complete all required electrical work, including excavation, backfill, and compaction for underground electrical circuits.

Payment will be made at the lump sum price on the SCHEDULE OF ITEMS for the job completed and accepted.

16400 – 4