Cherry Hill Bath House Statement of Work.docx

USDA FOREST SERVICE

CHERRY HILL BATHHOUSE FY 2010

ANDREW PICKENS RANGER DISTRICT

FEBRUARY 2010

US Forest Service 4931 Broad River Road Columbia, SC 29212

CHERRY HILL BATHHOUSE FY 2010

DIVISION 1 - GENERAL REQUIREMENTS

01010 - SUMMARY OF WORK

A. In accordance with the contract provisions, the contractor is to provide the complete construction of the Cherry Hill Bathhouse in accordance with the drawings, specifications, and other provisions of the contract. Work shall include but not be limited to the following:

1. Demolition.

2. Clearing and grubbing

3. Site Grading, excavation, borrow material, compaction, trenching, and soil testing for compaction.

4. Gravel surfacing for road, building pad, host site spur, and gravel testing for compaction.

5. Relocation of picnic table, fire ring grill, and lantern post.

6. Pre-engineered toilet/shower bathhouse, delivered and installed.

7. Water lines for bath house and yard hydrants, valves, valve boxes, conrete pads, gravel, pressure testing, and bacteriological testing.

8. Septic tanks, drain field, pump station, controls, sewer lines, pressure sewer lines.

9. Host site RV electric pedestal, conduit, wiring, circuit breaker.

10. New meter and underground electric service.

B. A final inspection is required by the Oconee County Health Department for the septic tank and drainfield. The contractor shall coordinate all final inspections and provide the necessary certifications as required by the Health Department.

C. Contractor shall coordinate with the power company for the removal of the existing electrical service to the existing bath house, new meter and service to the new bath house, and the location of all underground electric lines.

D. The Cherry Hill Recreation Area is located on Highway 107 north of Walhalla, SC. From Walhalla, SC, proceed north on highway 28 for approximately 8 miles, turn right on Highway 107 and proceed approximately 9 miles. Entrance to the Cherry Hill Recreation Area will be on the right.

01051 – CONSTRUCTION STAKING

A. Construction staking shall be the responsibility of the Contractor. Staking for any part of the work shall be approved by the COR prior to commencing construction on that part. Construction staking shall not be a separate pay item, but shall be considered part of each individual item of work.

01300 - SUBMITTALS

A. Contractor shall submit to the COR, data sheets and/or drawings for all "or equal" substitutions proposed in lieu of the name brands specified prior to commencing any work that relates to a respective submittal. Contractor shall submit 3 copies of all submittals.

B. Contractor shall submit 3 copies of all submittals as specified in other sections of these specifications.

C. Copies of the construction permit for the septic tank and drain field will be made available to the contractor at the pre-work conference.

01410 - TESTING LABORATORY SERVICES

A. The Contractor shall be responsible for securing the services of a recognized testing and laboratory firm that is approved by the State to perform all water tests and all soil and gravel compaction tests as required. The Contractor shall be responsible for taking, handling and transporting all samples to the laboratory if required.

01510 - TEMPORARY UTILITIES

A. Electricity – Contractor shall provide temporary power if needed.

B. Water -Potable water (drinking water) is not available at the site. The existing water system is closed until April 2010. The contractor may turn on and charge the water system for use in testing the new water lines. .

C. Sanitary - Sanitary facilities are not available at the site.

01635 - PROTECTION OF ADJACENT AREAS

A. The Contractor shall be responsible for protecting from damage all adjacent areas and existing improvements around or near the project site. All damage to areas caused by construction activities or equipment shall be immediately reported to the COR. The Contractor shall be responsible for repairing all damaged areas as directed by the COR.

01700 - PROJECT CLOSEOUT

A. Instructing Owner in Use of Building

It is the responsibility of the Contractor to see that the proper manufacturer's representatives, subcontractors, contractor's superintendents, etc., are available at completion of the job and before occupancy to provide instructions in the use of all facilities and equipment and to train personnel in the proper use and maintenance of the building, equipment controls, switches, valves, etc.

DIVISION 2 - SITE WORK

SECTION 02050 - DEMOLITION

PART 1 - GENERAL

A. This item covers the removal of the following:

PART 2 - PRODUCTS

A. None

PART 3 - EXECUTION

A. All material designated to be removed shall be removed from the project site and disposed of in accordance with all state regulations.

B. All holes shall be backfilled and compacted to the density of adjacent ground.

C. Septic tanks shall be pumped out and the tops and sides crushed in. The hole shall be backfilled and compacted to the density of the adjacent ground.

D. The concrete reservoir shall be drained and the top and sides crushed in. The hole shall be backfilled and compacted to the density of the adjacent ground and covered with 4” of gravel.

E. All disturbed areas shall be seeded and mulched.

SECTION 02110 - CLEARING

PART 1 – GENERAL

A. This section covers the clearing and grubbing within the areas of construction and the necessary trees for the installation of the new bathhouse, host site spur, and drain field. All trees, stumps, existing stumps, limbs, and debris shall be removed from the site.

PART 2 – PRODUCTS

A. None

PART 3 – EXECUTION

A. Cut all trees within the areas of construction or as directed by the COR.

B. Grub deep enough to remove stumps, roots, buried logs, moss, turf, or other vegetative debris.

C. Backfill stump holes and other grubbing holes with backfill material to the level of the surrounding ground. Compact backfill with heavy equipment until there is no visible displacement.

SECTION 02210 - SITE GRADING

PART 1 GENERAL

A. This section covers all required site grading for the new bathhouse and walkways, host site spur, and the area of the existing bathhouse including excavation, placement and compaction of borrow material, drainage excavation, ditching, the final dressing and compaction of the site.

B. All excavation work shall be unclassified.

PART 2 PRODUCTS

A. Excavated material may be used as backfill.

B. Excess excavated marterial shall be removed from the site.

C. Borrow Material

PART 3 EXECUTION

SECTION 02221 - TRENCH EXCAVATION, BACKFILL AND COMPACTION

A. This item covers all trenching, backfilling and compacting for the water lines, sewer lines, pressure sewer lines, drain field lines, and electric lines.

B. All excavation work shall be unclassified.

A. None.

A. The trenches receiving the pipe shall be the minimum width possible with consideration being given to working room and safety within the trench.

B. The depth of the trench shall be as shown on the drawings.

C. The trench bottom shall be raked smooth and compacted to form proper bed for pipe and prevent settlement at the bottom of the trench.

D. Pumping, Bailing and Draining

1. The Contractor shall remove by pumping, bailing, or draining any water which may accumulate, or be found, in the trenches and other excavation made under this contract and shall form all dams, flumes or other works necessary to keep them entirely clear of water while the utility lines are being constructed.

E. Trench Backfilling and Compaction

1. Trench backfilling shall be carefully performed so as not to cause movement of the pipe within the trench.

2. Backfill shall be carefully deposited and compacted on both sides of the pipe to avoid damaging pipe.

3. Warning tape shall be installed in all water line and electric line trenches as shown on the drawings.

SECTION 02250 – COMPACTION CONTROL AND TESTING

A. This section covers all compaction for earth fills and gravel fills as shown on the drawings and specified herein.

A. Building Sub Base – ¾” minus crushed gravel.

B. Gravel for host site spur shall be CR-14.

C. Gravel for existing roads shall be CR-14.

A. The ground on which the fill or backfill material is to be placed shall be firm, dry, unfrozen, and cleared of all debris.

B. Earth backfill for the building subgrade shall be done in 8" lifts (max.) and compacted to 95% of the optimum density in accordance with ASTM D 1557. All other backfill shall be compacted until no visible movement is observed.

C. Building sub base shall be compacted in place to 95% of the optimum density in accordance with ASTM D 1557. Finished surface of sub base shall be uniformily level, not varying more than ½” from true horizontal.

D. Gravel for the host site spur and existing roads shall be shaped and spread with a motor grader and compacted in place with existing heavy equipment.

SECTION 02611 - GRAVEL SURFACING

A. This section covers the gravel for the building pad, host site spur, and roadways.

A. All gravel surfacing shall be placed at the depths indicated on the drawings and at the widths shown. Shaping and spreading of gravel shall be made with a motor grader.

B. Gravel shall be compacted in place as specified under Section 02250 Compaction Control and Testing and as shown on the drawings.

DIVISION 3 - CONCRETE

SECTION 03100 - CONCRETE FORMWORK

A. This section covers all formwork, expansion and control joints, and related accessories.

A. Forms shall be wood, plywood, hardboard, or metal and shall be approved by COR.

B. Form oil shall be nonstaining type.

C. Expansion joint filler shall be premolded or preshaped type made of asphalt fiber.

A. Forms shall be built tight, in proper alignment, and adequate to resist the stresses of concrete placement without deformation.

B. Forms shall be constructed to produce the required concrete surface.

C. Expansion and contraction joints shall be formed as indicated on the drawings.

SECTION 03200 - CONCRETE REINFORCEMENT

A. This section covers all concrete reinforcement and its accessories.

B. The latest editions of the following specifications and codes shall govern:

1. ACI 301, Specifications for Structural Concrete for Buildings

2. ASTM A615, Deformed and Plain Billet-Steel Bars for Concrete Reinforcement

3. ASTM A185, Steel Welded Wire, Fabric, Plain, for Concrete Reinforcement

A. Reinforcing steel shall comply with ASTM A615, intermediate grade 40, unless otherwise shown.

A. Reinforcement bars and mesh shall conform to the sizes and spacings as shown.

B. Field bending and cutting will be permitted if performed in accordance with above listed code.

C. Reinforcement shall be free from dirt, oil, paint, grease, mill scale, and loose or thick rust when concrete is placed.

D. Woven wire mesh shall be hooked and/or supported during the placement of concrete slabs to insure proper embedment as detailed.

E. Anchorage and accessories shall be accurately placed as shown and held rigidly in position during placing of concrete.

F. Depth of cover, radius of bends, and deformations shall be in accordance with ACI-318.

G. All splices shall overlap a minimum of 18 inches.

SECTION 03300 - CAST-IN-PLACE CONCRETE

A. This section covers cast-in-place concrete, including curing and finishing of concrete.

B. The latest editions of the following specifications and recommended practiced shall govern:

1. ACI 301 - Specifications for Structural Concrete for Buildings

2. ACI 306 - Recommended Practice for Winter Concrete

3. ACI 305 - Recommended Practice for Hot Weather Concrete

A. Aggregate shall conform to the requirements of AASHTO M6 and M80 and shall be well graded from fine to coarse within designated limits.

B. Cement, Portland, shall comply with ASTM C150, Type 1. Supplier shall provide mill certification of compliance with specification.

C. Water shall be clean, fresh, and free from injurious amounts of minerals or foreign substances.

D. Additives, air entrainment agents shall comply with ASTM C-260.

E. Liquid curing membrane shall be Type 1-D or Type 2.

F. Concrete Mix Design

1. All concrete shall have a minimum "compressive strength" of 3000 psi at 28 days.

2. Concrete shall be air entrained and shall contain not less than 3% and not more than 6% entrained air determined by test procedure ASTM C-138.

3. The design of the concrete mixture shall be the responsibility of the Contractor and shall be submitted to the COR for approval prior to placing any concrete.

G. Concrete collars for valve boxes shall be pre-cast concrete as approved by the COR.

A. "Ready-Mixed Concrete" may be employed if the time interval between mixing at the plant and discharge into the form does not exceed 1-1/2 hours.

B. All concrete shall be placed within 1-1/2 hours from the time of mixing.

1. No concrete shall be placed after it has started its initial set.

2. No concrete with a temperature above 90oF or below 50o shall be placed.

C. Concrete shall be placed in such a manner as to avoid segregation of the mixture.

1. Concrete shall be spread in horizontal layers when practicable.

2. No concrete shall be freely dropped more than 5'.

3. Depositing a large quantity of concrete and flowing or working it along the forms will not be permitted.

D. Mechanical vibrators shall be used for consolidation of concrete.

1. Concrete shall be consolidated within 15 minutes after placement.

2. If consolidation of concrete with mechanical vibrators is impractical, hand tamping, rodding, and spading will be permitted.

E. Concrete shall be placed and protected as specified for temperature conditions.

F. Concrete plant standards and truck mixer and agitator standards shall be as recommended by the National Ready Mix Association.

G. Finishing

1. All finishes shall be made without use of cement or other dusting materials.

2. Concrete shall be struck to proper grade and surface finished with float trowels.

3. At all exposed formed surfaces, remove all ties, fill all form tie holes and imperfections; i.e., "honeycombing", with dry cement mortar, remove all lines, and then "sack" or finish to match adjacent surfaces.

4. All concrete walkways and pads at yard hydrants shall be broom finished.

5. All edges and control joints, shall be edged with a minimum 1/2 inch radius edging tool

H. Concrete shall be protected against rapid drying and kept moist for 7 days by covering with curing paper with edges sealed, burlap, canvas, Type 1-D or Type 2 liquid membrane curing compounds, or by sprinkling.

I. Testing

1. Concrete shall have a minimum 28-day breaking strength of 3000 psi when tested in accordance with ASTM C-39.

2. At the option of the COR, the Contractor shall make a minimum of two (2) test cylinders from each concrete truck. The test cylinders shall be made in accordance with ASTM C31, stored on the site and protected from damage. Each cylinder shall be labelled to identify which section of the project the concrete was incorporated. The Contractor shall deliver the cylinders to a Forest Service approved laboratory for testing. The cost of testing (breaking) the cylinders will be paid for by the Contractor.

3. Slump shall not exceed 3" for vibrated concrete or 5" for nonvibrated concrete. Contractor shall perform slump testing in accordance with ASTM C143 as may be directed by the COR.

DIVISION 13 – SPECIAL CONSTRUCTION

SECTION 13120 – PRE-ENGINEERED STRUCTURES

PART 1 – GENERAL

A. This section covers the complete construction and installation of the pre-engineered conrete shower and flush toilet building including the fabrication, delivery, installation, all utility hook-ups, and testing as specified herein and shown on the drawings.

B. The pre-engineered 4-unit concrete shower and flush toilet building shall be the “Navajo” model as manufactured by CXT, Incorporated, Spokane Industrial Park, 3808 North Sullivan Road, Building 7, Spokane, WA 99216, Phone: 800-696-5766, or equal. Jeff Chambers is the contact person for CXT, Inc. and can be reached at 800-696-5760.

C. Contractor shall furnish the COR a work order for the pre-engineered toilet/shower building from the manufacturer for approval listing the standard and optional features and equipment for the building prior to ordering the building.

D. Specifications

Prestressed Concrete Products

D. Manufacturer Criteria

The manufacturer supplying the requested precast concrete shower/flush facility must meet the following:

1. Manufacturer must be ISO 9001 certified at the time of bid.

2. Manufacturing plant must be PCI certified at the time of bid.

3. Manufacturer must not have defaulted on any contract within the last five years.

4. Manufacturer must provide stamped, engineered drawings prior to acceptance.

5. Manufacturer must show examples of precast concrete flush/shower facilities produced, installed, and in use as an example of their ability to perform on this contract.

E. Design Criteria

The Navajo shall be designed to meet the following criteria. Calculations and Engineer’s stamped drawings should be made available, for standard buildings, upon request. Design criteria shall include 2006 IBC Code, 2006 IPC, 2008 NEC.

1. Roof Snow Load

a. The Navajo is designed to withstand a 250 pounds per square foot snow load

2. Floor Load

a. The Navajo is designed to withstand 400 pounds per square foot floor load

3. Wind Load

a. The Navajo will withstand the effects of 150 mile per hour (3-second gust) wind exposure C

4. Earthquake

a. The Navajo will withstand the effects of a seismic group 1 seismic design category E earthquake.

5. Additional Design Standards

a. The Navajo is designed to meet the requirements of the American with Disabilities Act Requirements and Uniform Federal Accessibility Standards as of the date of these specifications.

b. The Navajo is an all concrete design with a minimum 3/12 roof pitch.

F. Mixing and Delivery of Concrete

Mixing and delivery of concrete will be in accordance with ASTM C94, section 10.6 through 10.9 with the following additions:

G. Placing and Consolidating Concrete

Concrete will be consolidated by the use of mechanical vibrators. Vibration will be sufficient to accomplish compaction but not to the point that segregation occurs.

H. Finishing Concrete

I. Cracks and Patching

J. Curing and Hardening Concrete

1. Concrete surfaces will not be allowed to dry out from exposure to hot, dry weather during initial curing period.

K. Structural Joints

L. Painting/Staining

suspension to provide uniform texture.

II. Interior walls and ceilings will be 2 coats of a modified acrylic, water repellent penetrating stain, followed by 1 coat of clear sealer.

color as the walls or roof followed by 1 coat of clear acrylic anti-graffiti sealer.

M. Testing

A. The “Navajo” CXT toilet/shower building shall include, but not limited to, the following:

· Standard simulated shake roof, color “Java Brown”.

· Standard horizontal lap siding finish for the upper half of walls and rock finish for the lower half. Color of lap siding shall be “Toasted Almond” and the rock finish shall be “Napa Valley”.

· Fiberglass exterior doors and frames.

· Standard privacy locks.

· Dead bolt locks, keyed to Forest Service key. Forest Service will furnish cylinders if required.

· Stainless steel sinks, water closets, and showers.

· Electric hand dryers.

· 3 roll toilet paper holder.

· Exhaust fans.

· GFCI outlets.

· Floor drains.

· Stainless steel mirrors.

· Stainless steel windows and weld plates.

· Two (2) 80 gallon electric water heaters.

· ADA grab bars, signs, shower benches.

· Motion controlled interior lights.

· 200 amp panel box with circuit breakers.

· Wastebaskets

· Two tone color paint touch-up kit.

B. Sealers and Curing Compounds

C. Caulking, Grout, Adhesive and Sealer

H. Paint

I. Grab bars

Grab bars will be 18 gauge, type 304 stainless steel with 1-1/2” clearance. Grab bars will each be able to withstand 300 pound top loading.

J. Toilet Paper Dispenser

Dispenser will be constructed of ¼” thick, type 304 stainless steel. Dispenser will be capable of holding three (3) standard rolls of toilet paper. Toilet paper holder fastening system will be able to withstand 300 pound top loading.

K. Fiberglass Door (in place of steel door and doorframe)

Doors shall be 1 ¾” thick fiberglass door, heavy duty and reinforced construction.

Doorframe shall be of fiberglass, width to suit a 4” thick concrete wall. Three rubber door silencers will be provided on latch side of the door.

L. Door Hinges

Door hinges will be 3 per door with dull chrome plating 4-1/2”x4-1/2”, adjustable tension, automatic-closing for each door.

M. Restroom/Shower Lockset

N. Dead Bolt

Deadbolt will be a Lori Lock standard model with a double cylinder, 2 ¾ ” backset, and US26D finish. The cylinder will be a standard 1 1/8” Schlage Mortise cylinder with compression ring and 626 finish. Dead bolt shall be keyed to Forest Service standard key. Forest Service will furnish cylinders (Yale) if required.

O. Door Stop

Doorstop will be a dome style stop meeting ANSI 156.16.

P. Mirror

Mirror to be 18” x 36” stainless steel.

Q. Door Sweep

Door sweep will be provided at the bottom of door and will be an adjustable brush type.

R. Wall Vent

Wall vent to be crank operated allowing the unit to be opened or closed. Crank will be removable. Wall vent frame will be cast into the concrete wall. The units’ frame will be C3 x 4.1 channel steel. The louver frame and louvers will be 18 gauge zinc coated steel with baked enamel finish. Vent to come with insect screen.

S. Windows

T. Plumbing

Toilet & Sink

Shower

U. Electrical

lens fixtures with low temperature ballast wet labeled.

V. Shower Benches

Shower benches to be heavy duty 304 satin finish stainless steel with phenalic slats.

A. Scope of Work

Work specified under this Section relates to the placement of the unit by CXT on prepared foundations.

B. Materials

Bedding material to be sand or 3/4” minus crushed or screened aggregate provided and set to required level by the contractor.

C. Location

D. Access to Site

Delivery to site made on normal highway trucks and trailers. If at the time of delivery conditions of access are hazardous or unsuitable for truck and equipment due to weather, physical constraints, roadway width or grade, CXT may require an alternate site with better access provided to ensure a safe and quality installation.

E. Warranty – Precast Division

Contractor shall provide manufacturer’s standard warranty for the building and furnish a copy to the COR.

DIVISION 15 - MECHANICAL AND PLUMBING

SECTION 15401 – WATER SERVICE

A. This section covers the complete construction of the potable water supply service line and building water lines including all piping specialties, valves and boxes, yard hydrants, testing and disinfecting as shown on the drawings.

A. All pipe material, solder and flux shall be lead free (less than 0.2 percent lead in solder and flux and less than 8.0 percent lead in pipes and fittings).

B. Materials Standards - Pipe, fittings, packing, jointing materials, valves and hydrants shall conform to Section C of the American Water Works Association (AWWA) Standards. All materials or products which come into contact with drinking water shall be certified as meeting the specifications of the American National Standard Institute/National Sanitation Foundation Standard 61, Drinking Water System Components - Health Effects. The certifying party shall be accredited by the American National Standards Institute.

1. Gate valves must be in accordance with AWWA C500 or C509.

2. Natural rubber or other material which will support microbiological growth may not be used for any gaskets, O-rings, and other products used for jointing pipes, setting meters or valves, or other appurtenances which will expose the material to water.

2. Lubricants which will support microbiological growth shall not be used for slip-on joints. Vegetable shortening shall not be used to lubricate joints.

A. Water Pipe and Fittings

1. Plastic waterline shall be Schedule 40 PVC, rated 280 PSI with NSF certification on each joint, and in accordance with ASTM D-1785 unless otherwise specified. PVC fittings shall meet ASTM D-2466. Use schedule 80 where pipe fittings are required to be threaded.

2. Solvent for PVC shall be in accordance with pipe manufacturer's recommendations.

3. Underground water service line (2” min.) to the new shower/toilet building shall be Type “K”, annealed soft copper water service line. Provide adapters specifically designed to connect copper lines to the exisitng water line.

4. Trap primer lines (1/2” min) shall be Type “K”, annealed soft copper water line.

B. Valves

1. Underground shut-off valves shall be threaded, bronze body, ball valve, rated 150 lb min., or equal.

2. Trap primers shall be PPP PO-500 Oregon #1 Primer Automatic Trap Primer Valve, or equal.

C. Self closing yard hydrant (YH2) shall be 3/4" freeze proof as manufactured by Woodford, Model U34-A. Locate hydrants as shown on the drawings. Bury depth shall be 2'-6". Spout shall have no threads or threads shall be cut off.

D Lockable yard hydrant (YH1) shall be freeze proof with back flow preventer drain, model M-2000 Series by Merrill, or model W34 by Woodford, or equal.

E. Valve boxes shall be cast iron, two piece adjustable, screw type 4 1/4" minimum shaft, complete with lids. Cover lids shall have "WATER" imprint on tops. Boxes shall be sized to extend to grade. Boxes and accessories shall be manufactured by Muller Company or equal. Each valve shall have an extended handle or valve rod in each valve box. Paint the top of thevalve box “BLUE”. Valve box shall have a concrete collar, pre-cast, 2’ min. diameter.

F. Vacuum breakers shall be designed for freeze proof operation, Watts Model NF8 or equal.

G. Gravel for drain pits at hydrants shall consist of crushed stone, ranging in size from 1/2 inch to 1 1/2 inches. No fines shall be allowed.

I. Concrete – Where concrete is used for slabs or bases, it shall conform to Division 3 of these specifications.

A. Water Pipe and Fittings

1. Any connections made between different pipe materials, including valves and fittings shall be made using connectors or adapters designed for that purpose.

2. Adaptors between steel, copper, and plastic lines shall be made with standard adaptors specifically made for the purpose.

B. Pipe Laying Trench

1. Before the pipe is laid in the trench, the earth forming the bed shall be freed of stones, roots, etc. The pipe shall then be evenly bedded in the earth to leave a uniform support for the entire length of the pipe, except the couplings under which a recess shall be excavated to a sufficient depth to relieve it of any load and to allow ample space for making the joint. In case the bed trimmed on the bottom of the trench is too low, earth shall be placed in the bottom of the trench and tamped, and a new bed shall be trimmed for the pipe. Pipe shall not be raised by ramming earth beneath it.

2. All water lines shall be provided with a minimum of thirty (30) inches of cover.

3. Preparatory to making pipe joints, all surfaces of portions of the pipe and jointing material to be joined shall be clean and dry. Lubricants, primers, adhesives, etc., shall be used as recommended by the pipe and/or joint manufacturer's specifications. The joints shall be made and a watertight joint obtained.

4. When the pipe has been bedded and the joint made, the recess under the couplings shall be refilled with earth and enough refilled and tamped on each side of the pipe to hold it securely in place. Care shall be taken to not disturb the position of the pipe during this process.

5. Backfill shall not be placed over any pipe that is in a heated condition. Before backfilling, the pipe temperature shall be brought to the approximate temperature of the ground either by running water through it or by backfilling in the early morning when pipe and ground are at the same temperature.

6. A continuous and uniform bedding shall be provided in the trench for all buried pipe. Back-fill material shall be tamped in layers around the pipe and to a sufficient height above the pipe to adequately support and protect the pipe. Stones, other than crushed bedding, shall not come into contact with the pipe and shall not be within six (6) inches of the pipe.

7. Trenches shall be kept free and dry during bedding, laying, jointing and backfilling.

8. At the end of each work day and when left unattended, all open ends of the pipes will be covered to prevent entrance of trash or wildlife.

9. Connections will be made to the existing and/or constructed facilities according to standard plumbing practices. Any connections made between different pipe material shall be made using connectors or adaptors designed for the purpose of connecting the two types of pipe.

10. Extend handles on all underground valves as shown on the drawings. If handles can not be extended as shown, provide valve rod for each valve as shown on the drawings.

11. Install detectable warning tape in all water line trenches as shown the drawings. Water line shall be detectable within 3 feet with electronic equipment.

C. Separation of Water Mains and Sewer

1. Parallel installation – Water mains shall be laid at least ten (10) feet horizontally from any existing or proposed sewer. The distance shall be measured edge to edge. In cases where it is not pratical to maintain a ten foot separation, the Contractor shall obtain approval from the COR and DHEC prior to installing the water line. In such cases where the ten foot separation cannot be met and approval has been obtained from the CORand DHEC, the water main shall be laid in a separate trench or on an undisturbed earth shelf located on one side of the sewer at such an elevation that the bottom of the water main is at least eighteen (18) inches above the top of the sewer.

2. Crossings – Water mains crossing sewers shall be laid to provide a minimum vertical separation of eighteen (18) inches between the outside of the water main and the outside of the sewer line. This shall be the case whether the water main is either above or below the sewer line. Whenever possible, the water main shall be located above the sewer line. Where a new water main crosses a new sewer line, a full length of pipe shall be used for both the water main and sewer line and the crossing shall be arranged so that the joints of each line will be as far as possible from the point of crossing and each other. Where a new water main crosses an existing sewer line, one full length of water pipe shall be located so both joints will be as far from the sewer line as possible.

3. Where a water main crossses under a sewer, adequate structural support shall be provided for the sewer line to prevent damage to the water main.

4. Special Conditions – When it is impossible to obtain the distances specified above, the following alternatives shall be met:

5. Force Mains – There shall be at least a ten (10) foot horizontal separation between water mains and sanitary sewer force mains. There shall be an eigthteen(18) inch vertical separation at crossing as required above.

6. Sewer Manholes – No water pipe shall pass through or come in contact with any part of a sewer manhole. Water lines may come in contact with storm sewers or catch basins if there is no other practical alternative, provided theat ductile iron is used, no joints of the water line are within the storm sewer or catch basin and the joints are located as far as possible from the storm sewer or catch basin.

7. Drain-Fields and Spray-Fields – Potable water lines shall not be laid less than twenty-five (25) feet horizontally from any portion of a waste-water tile-field or spray-field, or shall be otherwise protected by an acceptable method approved by the COR.

8. Surface Water Crossings (if applicable)

a. Above water crossing – The pipe shall be adequately supported and anchored, protected from damage and freezing, and accessible for repair or replacement.

b. Underwater crossing – A minimum cover of two (2) feet shall be provided over the pipe. When crossing water courses which are greater than fifteen (15) feet in width, the following shall be provided:

(i) The pipe material and joints shall be designed appropiately.

(ii) Valves shall be located so that the section can be isolated for testing or repair; the valves shall be easily accessible, and sot subject to flooding.

(iii) A blow-off shall be provided on the side opposite the supply service, sized in accordance with the State Primary Drinking Water Regulations.

9. Cross Connections and Interconnections

a. Cross Connections – There shall be no connection between the distribution system and any pipes, pumps, hydrants, or tanks whereby unsafe water or other contaminaton materials may be discharged or drawn into the system.

D. Testing

1. Waterlines - Before backfilling any section over pipe couplings, it shall be tested by the Contractor in accordance with AWWA C600. Test presure shall be a minimum of 90 PSI (1.5 times the working pressure) for two hours with no allowable leakage. An air pressure test will not be accepted. The Contractor shall record all test procedures and results and submit two (2) copies to the COR upon completion of all pressure testing.

2. Leaks or defects revealed by the tests will be located and repaired until no leaks are detected and the pressure holds for two hours. Any length of pipe or pipe fitting damaged or defective shall be promptly removed from the job site or destroyed.

3. Test System for Proper Operation in the Presence of the COR.

E. Disinfection of Waterlines

1. Disinfection of well, tanks, and waterlines shall be conducted in accordance with AWWA C651. Upon completion of the water system, the entire system shall be disinfected by pumping chlorine at 50 ppm throughout the entire system. Valves, faucets, fixtures and hydrants shall be opened at this time permitting the solution to flow through until the strong smell of chlorine is detected and then closed. This chlorinated water shall remain in the system for a minimum of 24 hours. At the end of the 24 hour disinfection period, the treated water in all portions of the waterlines must have a residual of not less than 10 ppm free chlorine. Then the system must be flushed with potable water and the sampling program started. Care must be exercised to prevent damage to the equipment or surrounding environment when draining the system.

2. The number of sampling sites depends on the amount of new construction but must include all dead-end lines and be representative of the water in the newly constructed mains. At each site, a minimum of two (2) satisfactory bacteriological samples taken at least 24 hours apart shall be obtained. Also at each site, chlorine residual at time of sampling must be measured and reported. If the membrane filter method of coliform analysis is used, non-coliform growth must also be reported. If non-coliform growth is greater than 80 colonies per 100 milliliters, the sample result is invalid and must be repeated. All samples shall be analyzed by a State approved laboratory.

3. Location and number of bacteriological (bacti) samples and chlorine residual tests required are as follows:

b. Contractor shall take one chlorine and bacti tests at each site. Then after a minimum of 24 hours, the contractor shall take another test at the same the site.

4. If the chlorine residual at each site is greater than 0.0 mg/l, then the bacti and chlorine residual tests shall be repeated at that site.

SECTION 15361

SEPTIC TANKS, PUMP STATION, WASTE PLUMBING

2. Contractor shall be licensed in accordance with SC DHEC Regulation 61-56.1 for the construction of the on-site sewage treatment and disposal system.

3. Contractor or electrical contractor shall sign a “Certification of Pump System Electrical Connections” form. Copy of certification shall be given to the COR.

A. Pressure Sewer and Fittings

1. Pressure sewer pipe shall be Schedule 40, PVC, ASTM D-1785 unless otherwise specified. Use Schedule 80 where pipe is required to be threaded. PVC fittings shall meet ASTM D-2466 (Schedule 40) or ASTM D-2467 (Schedule 80).

2. Solvent for PVC shall be in accordance with pipe manufacturer's recommendations.

3. Valves - Plastic valves shall be plain body ball valves, full port, 150 psi working pressure at 120 degrees F, PVC, 1/4 turn open/close, straight body.

B. Sanitary Piping - Drain, waste, vent pipe, clean-outs, and fittings shall be polyvinyl chloride (PVC) and shall conform to ASTM D-2665, Schedule 40 with solvent joints.

C. Septic tanks and distribution box shall be precast, or poured in place 3,000 psi, 28 day reinforced concrete of the size shown on the drawings. The materials and fabrication shall be in accordance with Division 3. The tanks shall be a type approved by the SC DHEC for use as a septic tank.

D. Concrete - Where concrete is used for slabs or bases, it shall conform to Division 3 of these specifications.

E. Epoxy protective coative shall be Coppers type 300M coal tar epoxy, or equal.

F. Pump Station Equipment

1. Effluent Pumps - Each pump shall have a capacity of 37 gpm at a total head of 60 feet, 2 horsepower, single phase, 60 hz, 230 volts, Model WGL20F as manufactured by F.E. Myers Company, or equal. Two (2) pumps shall be furnished for alternating operation and emergency operation with a minimum discharge of 1 ¼” NPT.

2. Pumps shall be provided with a lift-out package, “SRA Lift-Out Package”, model SRA-125-CV by F. E. Myers, or equal.