SECTION 01100

GRADING, FILLING & EXCAVATION

01. SCOPE OF WORK: labor, equipment, tools, and materials necessary to perform all tasks required to complete all excavation and backfilling and grading of the project site as shown on the drawings and as specified herein. The Contractor shall be responsible for coordination with other work. All incidental work, material, labor and appurtenances not specifically shown but necessary for completion of the work shall be furnished and installed by the Contractor at no additional expense to the District .

02. GENERAL: Excavation, grading and trenching is to take place within the limits indicated on the drawings. The Contractor shall maintain proper site drainage it all times so that water does not pond or damage adjacent property . Erosion and sediment control measures are to be initiated at the beginning of the construction and maintained throughout the duration of the Project in accordance with state and local rules, regulations and recommendations.

A. Earthwork Classification: All grading, and excavation shall be considered unclassified for payment purposes. Additional payment will he made for rock excavation as defined in Classified Excavation.

B. Sheathing and Bracing: proper sheathing and bracing and protection of all excavation and back filling shall be the responsibility of the Contractor and shall be done in strict accordance with OSHA regulations and safe practices as required for protection of ongoing work, existing structures, piping, utilities, and personnel. Water line trenches in streets shall not be laid back but cut vertically.

C. Compaction: In-place moisture density testing may be conducted at the recommendation of the District Engineer to insure that all placed and compacted material, to include fill and backfill of structures and piping, complies with the specifications. Testing is to be performed by a licensed testing laboratory at locations to be determined by the District Engineer. Tests are to be paid for by the District. Work not complying with the specified compaction shall be removed, recompacted and retested at Contractor's expense.

03. SITE GRADING: site grading is to be completed within the limits and the elevations and grade shown on the drawings. The Contractor shall be responsible for staking all water lines and all other units of construction, for the purpose of establishing proper locations and elevations at the units.

A. Protection: The Contractor is responsible for maintaining all existing utilities, roads, structures, construction staking and property corners free from damage. The Contractor shall be responsible for verifying the location and existence of all structures and utilities within or adjacent to the project area. Any item that is damaged during construction shall be promptly repaired by the Contractor, at his own expense, to its original or better condition unless otherwise directed by the District.

04. FILLING: Site grading shall be conducted in such a manner as to minimize filling. Any filling done shall be compacted to minimum of 90% as measured by the AASHTO method T99.

A. Material: Placed fill material shall be soil free of roots, stones having a diameter greater than 6 inches, trash, and debris, Fill material is to be placed in horizontal layers no deeper than 8 inches and thoroughly compacted before placing additional layers.

05. EXCAVATION AND BACKFILLING: Excavation and backfilling for structures and trenching for pipelines shall be made at the locations and subgrade shown on the drawings. The area to be excavated is to be cleared and grubbed prior to beginning work in accordance with Section 01000.

A. Existing Utilities: Before beginning any excavation, the Contractor shall be responsible for notifying the offices of all public utilities in the work area and locating all existing utilities and protecting such utilities from damage during construction. The drawings may not show the exact location of all utilities.

1. Failure to show existing utilities on the drawings shall not relieve the Contractor from the responsibility of locating and protecting all utilities from damage prior to and during construction.

2. Utilities damaged during construction shall be immediately repaired at the Contractor's expense.

3. The Contractor shall be responsible for promptly providing temporary service in the event that utilities are damaged and service is interrupted. Such temporary service is to be approved by the Owner of the damaged utility.

B. Structural Excavation: Excavation of structures shall be made at the locations shown on the drawings and to the sub-grade required. Excavation shall include the placement of suitable material as backfill and the proper and legal disposal of unsuitable or excess excavated material as approved by the District Engineer. Unless otherwise indicated, all structural excavation shall be unclassified for payment purposes.

1. The excavation shall be kept free of water at all times during construction. The surrounding area shall be graded to slope away from the excavation, or other suitable means shall be provided to prohibit surface drainage from entering the excavation. Groundwater entering the excavation shall be continuously pumped out so that water does not accumulate in any portion of the excavation.

a) If unsuitable structural sub-grade conditions result from the Contractor's failure to prohibit surface water from entering the excavation or failure to properly remove groundwater from the excavation, the sub-grade shall be repaired to the satisfaction of the District Engineer and at the Contractor's expenses.

2. The bottom of the excavation shall be level and to the sub-grade elevation shown on the drawings. The bottom at proper sub-grade elevation shall be firm throughout and free of any soft or wet material.

a) Six (6) inches minimum of washed crushed stone shall be placed beneath all structural foundations for all excavations extending below the groundwater table. Sub-grade elevations must be adjusted to accommodate the placement of stone.

b) Whenever naturally occurring, soft or unsuitable sub-grade material, (not indicted on the drawings) is encountered at the sub-grade elevation, the Contractor, upon prior approval by the District Engineer, shall remove such soft or unsuitable material and replace it with acceptable compacted soil, crushed stone, or concrete as directed by the District Engineer. The Contractor shall be entitled to additional payment in accordance with specified change order procedures.

3. Rock excavation shall be accomplished by ripping, or blasting by experienced personnel, and in a manner that protects existing structure, piping, utilities , and personnel from damage or injury. Rock and other debris resulting from such excavation shall be hauled from the site by the Contractor and properly and legally disposed of. Personnel responsible for blasting shall secure licensing, permits and insurance required by the State of South Carolina.

C. Trench Excavations: Trenches are to be excavated by open cut to the depth, grade and alignment shown on the drawings.

1. Trench depth, unless otherwise indicated, shall be sufficient to allow a minimum of 4 feet of cover over the pipe.

2. Unless otherwise noted on the drawings, trench width shall be held to a minimum and in no case exceed, by the following dimensions, the outside diameter of the pipe being placed:

Outside diameter Excess trench width

of pipe or conduit measured at the top

being placed of pipe or conduit

------------------- --------------------

32 inches or less: 12-18 inches

36 inches or greater: 24 inches

3. Trench walls are to be cut vertically from the trench bottom to a minimum level 1 foot above the top of the pipe. Trench walls may be laid back above the minimum vertical height to accommodate soil and working conditions except when located in street or road rights-of-way.

4. Where trenching takes place in existing concrete or asphalt roadway pavement, the pavement shall be saw cut a width 2 feet wider than the top width of the trench, unless otherwise noted on the drawings. Ragged edges of pavement shall be recut as required prior to paving to form a straight and uniform alignment.

5. All trenches are to be excavated below the established sub-grade as required for preparation of trench foundation as shown on the drawing. All bedding material shall be well compacted and so shaped that the load is supported along the entire length of the pipe barrel. Bell holes shall be dug to prohibit additional loading on the bells and to provide for completion of joints. Class C bedding shall be used throughout except when the following conditions are encountered.

a) Where cover over the pipe exceeds 18 feet or where specifically noted on the plans - Class B required.

b) Where groundwater is encountered - Class C-alternate.

6. The trench shall be kept free of water at all times during pipe laying operations. Groundwater entering the excavation shall be continuously pumped out so that water does not accumulate in trench or make the sub-grade and pipe foundation unstable or soft.

7. All "Classified Excavation" (rock) shall be done under the supervision of a person thoroughly skilled in this type of work. All measures possible shall be taken to protect life and property. Flagmen shall be placed beyond the blast zone to prohibit entry into the blast area and danger zone. The Contractor shall be responsible for all damage done as result of the blasting operation. Personnel responsible for blasting shall secure licensing, permits and insurance required by the State of South Carolina.

D. Backfilling: Backfilling of structures and trenching is to be performed in such a manner as to provide a properly compacted backfill, free from rocks, organic matter, frozen material, excessively wet material, roots and other unsuitable debris. Suitable backfill material shall be borrowed from off site if necessary. Cost of all borrowed backfill material shall be included in the unit price for the pipe and structures.

1. Backfill of trenches is to be hand or mechanically tamped under and around the pipe in 6-inch lifts to a depth of 24 inches above the pipe. As fast as the material is placed, it shall be cut under the haunches of the pipe with a shovel and thoroughly compacted with light tamps for the full width of the trench to provide support for the bottom and sides of the pipe. The remainder of the backfill is to be compacted throughout in 8-inch maximum lifts to the required density specified below. Backfill under roads, pavement, sidewalks, parking areas and driveways is to be mechanically tamped throughout.

2. Backfill of all structures is to be mechanically tamped throughout the 6-inch maximum lifts to obtain the compaction specified below.

3. Compact with a mechanical tamp all backfill in areas under roads, pavement, sidewalks, parking areas and structures to 95 percent maximum dry density as determined by the AASHTO Method T99. Backfill material, at the time it is placed, shall have moisture content within 5 percent of the backfill's optimum moisture content.

4. Backfill of all pipe shall be done in such a manner so that stones or debris are not bedded against the pipe.

06. CLASSIFIED EXCAVATION: Classified excavation shall be limited to the excavation of "solid rock" for pipeline and structures, disposal of excavated rock and backfilling of the rock trenches and rock excavation to the level of the original ground line. The work shall include all labor, materials, equipment, permits, and any other incidental work required for excavation of solid rock. Rock shall be excavated 6" below normal sub-grade.

A. Solid rock shall be defined as that rock located in the trench or structural excavation that in the opinion of the District Engineer, cannot be removed with a pick, shove, ditching machine, backhoe, or other similar item and which requires drilling, blasting, or jackhammering for removal.

B. All backfilling of rock trenches and structural excavation shall be select fill material free of debris and rock. No excavation rock shall be permitted in the backfill.

C. The Contractor shall notify the District Engineer prior to excavating rock so that the District personnel may be present to measure the rock as it is being excavated and before any backfilling takes place.

D. Personnel responsible for blasting shall secure licensing, permits, and insurance required by the State of South Carolina.

End of Section

SECTION 01200

GRASSING

01. SCOPE OF WORK: The Contractor shall furnish all labor, equipment, tools, and materials necessary to perform all tasks required to complete all grassing within the limits of right-of-way and other disturbed areas shown on the plans, in coordination with all other divisions of work. Any incidental work, material, or appurtenances not specifically shown, but necessary for completion of the work, shall be furnished as required. All unpaved areas cleared and grubbed, graded, filled, excavated, or otherwise disturbed during construction, both within and beyond the right-of-way limits shown on the plans, shall be grassed. Grassing includes both temporary and permanent grassing.

02. GENERAL: The Contractor shall be responsible for verifying the condition and suitability of areas to receive grassing. The work to be performed under this section consists of preparing the seedbed; furnishing, placing, and covering limestone, fertilizer, and seed; compacting seedbeds; furnishing and securing mulch; mowing; and other operations necessary for the permanent establishment of grasses. All disturbed areas are to be grassed.

A. The Contractor shall adapt his operations to variations in the weather, seasons of the year, and soil conditions as necessary for the establishment of temporary and permanent grass cover.

B. Before acceptance and final payment is made for the grassing work, a complete and full coverage of all areas to be grassed shall be obtained. All eroded areas are to be filled, reseeded, and completely covered with grass.

1. Areas where surface drainage has been channelized and washing is evident are to be regarded, stabilized with degradable woven mesh, secured with stakes in accordance with the manufacturer's recommendations, and regrassed.

03. PERMANENT GRASSING: Permanent grassing shall be established on all unpaved areas graded or disturbed during construction.

A. Materials: Materials shall be approved by the District Engineer prior to use and shall include limestone, fertilizer, seed, and mulching materials.

1. Fertilizer shall be an acceptable commercial fertilizer having the following percentages of phosphorous, nitrogen, and potassium by weight: phosphorous - 10%, nitrogen - 10%, potassium - 10%.

2. Limestone shall be an agricultural grade limestone containing no less than 85 percent by weight of combined calcium and magnesium carbonate. All limestone shall be graded so that 100 percent will pass through U.S. standard 10 mesh screen and 40 percent will pass through U.S. Standard mesh screen. Any hardened or caked limestone shall be pulverized to its original condition before being used.

3. Seed shall be a mixture of Fescue and Bermuda with a purity of no less than 90 percent and a germination rate of no less than 80 percent and conforming to state law.

B. Seedbed Preparation: The seedbed shall be prepared in topsoil placed by the Contractor. The soil shall be scarified or otherwise loosened to a depth of 5 inches or more. All clods are to be broken up and all rocks and debris removed. The upper 3 inches of soil shall be worked into an acceptable seedbed by the use of pulverizers, drags, or harrow. Seedbed preparation shall not be done when the soil is frozen, extremely wet, or otherwise unsuitable as determined by the District Engineer.

1. Fertilizer shall be uniformly distributed at a minimum amount of 1200 pounds per acre.

2. Limestone shall be uniformly applied at a minimum rate of 2000 pounds per acre and worked into the soil prior to the incorporation of the seed.

3. Fertilizer, limestone, and seed shall be applied within 24 hours of completing seedbed preparation.

C. Seeding. Seed shall be uniformly distributed over the seedbed and immediately harrowed, dragged, raked, or otherwise worked into the seedbed so as to cover the seed with a layer of soil compatible with germination requirements. Immediately after the seed has been covered, the seedbed shall be compacted in a manner compatible with standard grassing practices. Seed shall be applied to the seedbed in the following amounts:

Fescue ----------150 pounds per acre

Bermuda-------- 40 pounds per acre

D: Mulching Mulch shall be applied to the seedbed areas within 36 hours after completion of the seeding operation.

1. Mulch shall consist of grain straw or other suitable materials approved by the District Engineer.

2. Prior to applying mulch, all roots, debris, and rocks greater than 2 inches in diameter are to be removed from the seedbed area.

3. Care shall be taken not to displace soil or seed during mulching operations.

4. Mulch shall be spread uniformly by hand or by mechanical spreaders and blower in the amount of 60 bales per acre.

5. Mulch on slopes greater than 5% is to be held in place by applying emulsified asphalt in the amounts of 250 gallons of emulsified asphalt per acre or shall be held in place by woven mesh properly staked.

6. Mulch in ditch lines is to be held in place by woven mesh and replaced as required if washed away by heavy rains.

Other suitable means of holding the mulch in place may be used with prior approval of the District Engineer.

E. Maintenance of Seeding and Mulching: Areas where seeding and mulching have been performed shall be maintained by the Contractor until an acceptable grass cover has been obtained and accepted by the District.

1. Maintenance shall include mowing at the times and locations directed by the District Engineer; repair of areas of erosion and washing; repair of damaged areas, areas of soft material likely to cause rutting; and reseeding as necessary to establish a sufficient uniform grass cover.

04. TEMPORARY GRASSING: Temporary grassing shall be performed in selected areas in advance of permanent grassing operations for the purpose of minimizing erosion in graded and disturbed areas during construction operation. Temporary grassing is considered to be a supplement to and not a substitute for, permanent grassing operations, erosion, or sediment control measures. The work shall include preparing seedbeds; furnishing, placing, and covering fertilizer and seed; mowing; and any other operations necessary for establishing temporary grassing of the required areas.

A. Temporary Grassing shall be done promptly at the location and times directed by the District Engineer and under the following conditions:

1) When a graded area cannot be brought to final grade and remain undisturbed and permanently grassed during construction, temporary grassing shall be provided until final grade can be obtained and the graded area permanently grassed.

2) When washing or erosion can occur on disturbed areas where temporary suspension of construction activity has taken place.

3) When an immediate ground cover is desirable to minimize washing, erosion, sedimentation, or pollution on any area.

4) When the season of the year is not suitable for establishing permanent grassing.

B. Areas to be Grassed shall be loosened to a depth of 5 inches. The surface to be seeded shall have adequate terraces and other irregularities in which seed and fertilizer can lodge so that the grassing materials cannot be easily dislodged by wind, rain, or surface runoff.

C. Seed and Fertilizer shall be applied uniformly at the required application rates over the prepared area to be grassed.

D. 10-10-10 Fertilizer shall be applied at a rate of 500 pounds per acre.

E Areas of Temporary Grassing shall be maintained in satisfactory condition until being permanently grassed. The maintenance shall include repair of erosion, reseeding, and mowing. All work to maintain areas of temporary seeding shall be done promptly at the direction of the District Engineer.

End of Section

SECTION 01300

PAVING AND SURFACING

01. SCOPE OF WORK: The Contractor shall furnish all labor, equipment, tools, and materials necessary to perform tasks required to complete all paving and surfacing as shown on the drawings and specified herein, in coordination with all other divisions of work and in coordination with required relocation and protection of existing utilities. Any incidental work, material, or appurtenances not specifically shown, but necessary for completion of the work, shall be furnished by the Contractor as required. Work under this section covers paving and surfacing of roads, drives, and parking areas.

02. MATERIALS:

A. Aggregate Base Course: Base course material shall consist of crushed stone, or gravel having hard, strong, durable particles free from adherent coatings. The crushed stone or gravel shall be graded downward from 1-1/2 inches as follows:

Graduation Size	Percent Passing	Tolerance
----------- -------- ----------
1-1/2 inch	100%	+- 0%
1 inch	86%	+- 11%
1/2 inch	67%	+- 12%
No. 4	45%	+- 10%
No. 10	35%	+- 10%
No. 40	22%	+- 8%
No. 200	8%	+- 4%

B. Pavement: All pavement shall be Bituminous plant Mix Pavement unless otherwise noted or specified herein. All pavement shall conform to the requirements of the South Carolina Highway Department.

03. CONSTRUCTION: Areas to be Paved and surfaced will consist of road patching, road resurfacing and parking areas. All trench excavation subgrade shall be prepared in accordance with Section 02200 and paved in accordance with the details shown on the plans. The subgrade for the access drives shall be compacted to 95% prior to placement of crushed stone.

A. Pavement Placement: Bituminous Plant Mix Pavement shall be placed and compacted to a minimum depth of 1-1/2 inches with heavy rollers in accordance with the requirements of the South Carolina Highway Department. The pavement is not to be placed during rainy weather, when the subgrade or base course is frozen, or when moisture on the surface to be paved would prohibit proper bond. Pavement shall not be placed when the air temperature, as measured in the shade away from artificial heat, is less than 35 degrees Fahrenheit. In the event that paving operations have started, paving may continue until the air temperature drops to 32 degrees fahrenheit at which time the paving must immediately cease. The compacted pavement shall be on less than 1-1/2 inches.

1. Pavement shall be mechanically tamped and thoroughly compacted around fence posts, structures, and all other areas not accessible to a wheeled roller.

04. CLEAN UP: At the completion of the paving operation, the paved areas and areas adjacent to the paved areas are to be cleaned, left in good condition, and free from debris. All loose aggregate is to be removed and the area surrounding the pavement graded smooth to drain.

05. CONNECTION TO EXISTING PAVEMENT: When new pavement is to be tied to existing pavement. the existing pavement is to be saw cut in a true line to eliminate all ragged edges; the base Course refined and mechanically compacted; and a tack course applied prior to placement and compaction of new pavement.

SECTION 01400

PIPING GENERAL REQUIREMENTS

01. SCOPE OF WORK: This section specifies the general requirements for installation of all piping, valves and fittings. The Contractor shall furnish all labor, equipment, tools, and materials necessary to perform all tasks required to properly install all pipe work as shown on the drawings and specified herein, in coordination with all other work and in coordination with the required protection, relocation or connection to existing utilities. Any incidental work, material, or appurtenances not specifically shown, but necessary for completion of the work shall be furnished by the Contractor as required.

02. MATERIALS: All piping to include valves and fittings shall be of the type and size as shown on the drawings or specified in other sections. Materials are to be of standard manufacturer meeting all requirements of applicable ASTM standards. Materials not specifically covered by and meeting ASTM, AWWA, and National Sanitation Federation Standards shall not be used.

03. EQUIPMENT PIPING: All piping necessary for proper installation and operation of equipment shall be installed as required to fit the equipment provided. The Contractor shall be responsible for providing piping and support necessary for proper equipment installation and operation whether or not the required piping and pipe supports are shown on the drawings. All piping is to be properly installed and supported in accordance with equipment manufacturer's recommendations so as not to put strain on equipment connections and to prevent excessive vibrations.

04. INSTALLATION: All piping shall be installed in a proper and workmanlike manner, property protected and supported, free from leakage and meeting all requirements for inspection and testing as specified in other sections.

A. Concrete Blocking: Concrete blocking shall be provided for all underground pressurized piping at all fittings, bends, and ends of pipe to prevent movement of pipe and fittings. Concrete shall be Class A (3000 psi). The concrete blocking shall bear on undisturbed earth in the bottom and sides of the trench and shall be equal to or greater than the dimensions shown on the drawings.

B. Concrete Protection: Protection and encasement concrete shall be Class B (2500 psi) and provided where shown on the drawings, or as necessary for protection of existing piping or utilities as directed by the Engineer.

C. Installation: All piping is to be installed to the line, grade, and elevations shown on the plans.

1. Water lines are to be installed in a true line and grade and in a manner so as to prohibit the formation of high and low spots in the piping likely to trap air.

2. All fitting, valves, sleeves, couplings, and appurtenances are to be compatible with, and of equal pressure class as, the piping being used.

D. Pipework in Structures: Pipework in structures is to include all pipe, fittings, valves, sleeves, and supports necessary for complete installation. Piping is to be compatible with the equipment provided.

1. All piping through walls of the manholes shall be adequately supported, and caulked water-tight with non-shrink grout.

05. TESTING: All piping shall be pressure tested and tested for leakage. Procedures for testing are specified in other sections. All potable waterlines are to be disinfected.

06. SHOP DRAWINGS: Shop drawings shall be submitted on all pipe, fittings, valves, sleeves, couplings, supports, and appurtenances required for complete installation of the piping. Where material being utilized is the same as specified, the Contractor shall submit shop drawings and a verification statement that all piping is as specified.

07. CLEAN UP: All piping shall be thoroughly cleaned of concrete, mortar, mud, dirt, debris, and rust prior to painting or coating. All areas of piping shall be cleaned up after installation to remove debris, and discarded and unused piping. The area of piping is to be graded smooth to drain and left in a condition satisfactory to the District Engineer before piping shall be considered to be complete. All above ground metal piping is to be painted.

End of Section

SECTION 01500

WATER LINES

01. SCOPE OF WORK: The Contractor shall furnish all labor, equipment, tools, and materials necessary to perform all tasks required to complete the construction of pressurized water line piping, valves, fittings, hydrants and appurtenances in accordance with the drawings and as specified herein, in coordination with all other divisions of work and in coordination with the required relocation of existing utilities and the connection of piping to the existing source of water. Any incidental work, material, or appurtenances not specifically shown, but necessary for completion of the work, shall be furnished by the Contractor at no additional cost to the District.

02. GENERAL: Work to install water lines shall be in conformance with Section 01400. All other work to clear, grubb, grass, trench excavation, and backfill shall be as specified in other sections. Testing, sterilization, and placement in service shall be considered as an integral part of the work to completely install the water line.

03. MATERIAL:

A. Pipe: Pipe material shall be as shown on the drawings, contained in the bid form and as specified herein. Valves, fittings, and appurtenances shall be the same type, size, and pressure class as the connecting piping. All piping material shall be certified by the AWWA and National Sanitation Foundation (NSF) for use as piping for potable water.

1. Ductile Iron Pipe and Fittings Section 02100

2. PVC Pipe and Fittings Section 02200

B. Valves, Hydrants, and Appurtenances: shall be as specified in Section 02000

04. INSTALLATION: Piping, valves, fittings, and appurtenances shall be properly installed, sterilized, pressure tested, and certified for use by the Engineer and State before the work shall be considered complete. Pipe is to be protected from mud and debris at all times.

A. Trench and Foundations: Trench and foundations for all underground water lines shall be Class C unless otherwise shown on the drawing.

B. Underground Piping: All underground piping shall have a minimum cover of 4 feet unless otherwise noted.

C. Separation:

1. For work in South Carolina separation between water lines and sewer lines shall be in accordance with the latest edition of "Recommended Standards for Sewage Works", 197B Edition, Chapter 20, section 29, and the following criteria should be met:

a) Water mains should be laid at least 10' horizontally from any existing or proposed sewer. Such deviation may allow for installation of the water main closer to a sewer, provided that the water main is laid in a separate trench, such that the bottom of the water main is at least 18" above the top of the sewer.

b) Water mains crossing sewers should be laid to provide a minimum vertical distance of 18" between the invert of the water main and the top of the sewer line; both the water and sewer lines must be cast iron or ductile iron. At crossing; one full length of water pipe should be located so both joints will be as far from the sewer as possible.

05. HYDROSTATIC TESTING: All water lines to include piping, valves, fittings, and appurtenances shall be tested by the Contractor. All water lines must successfully pass leakage test before being accepted by the District as properly installed. Water lines not passing the leakage test must be repaired and retested by the Contractor until the tests are successfully passed. Contractor shall install all taps and fittings required for testing and sterilization.

A. Leakage Test: A leakage test is to be performed after the water lines have successfully been pressure tested. The air is to be expelled from all water lines and the lines pressurized with water to the maximum operating pressures as directed by the Engineer. After obtaining the test pressure, the amount of subsequent water pumped into the water lines is to be measured by the use of a metering pump or other suitable device as approved by the Engineer. Leakage from the water lines will be considered to be the same as the amount of subsequent water pumped into the lines.

1. No water lines will be accepted as properly installed until the leakage in each section tested is less than the amount as determined by the following formula:

Text Box: L= ND √ p
7400

L = Allowable leakage in gallons per hour.

D = Nominal diameter of pipe, in inches.

P = Average test pressure in pounds per square inch.

N = Number of joints.

2. All sections of water line failing the leakage test are to be repaired and retested by the Contractor until the water lines have successfully passed the leakage test.

C. Water for Testing: The District is to provide all water for testing at no cost to the Contractor. The Contractor shall be responsible for furnishing all hose, temporary piping, fittings, and transportation required to deliver the furnished water from the point of delivery by the District to the point where testing is to take place. The point of delivery shall be at the end of the existing water system owned and operated by the CMD Water District.

06. DISINFECTION: After successfully testing, all water lines shall be disinfected by the Contractor before being placed into service. The lines are to be thoroughly flushed out and cleaned of any dirt, mud, discolorization and debris.

Disinfection shall be in accordance with the following:

A. South Carolina: A disinfecting solution of chlorine or calcium hypochlorite shall be introduced at one end of the water line as water is being withdrawn at the other end so that 50 PPM of free chlorine is maintained throughout the entire water line. The chlorine solution shall remain in the piping for 24 hours, after which time the residual chlorine shall not have dropped below 25 PPM. If the chlorine residual has dropped below 10 PPM, a new disinfecting solution shall be introduced and the process repeated. The Contractor shall be responsible for installing all taps and fittings required to disinfect the line.

1) Bacteriological Analysis: Two bacteriological samples of the water shall be taken a minimum of 24 hours apart after disinfection and tested by a South Carolina DHEC approved private lab. These tests shall be conducted at the expense of the District and not the Contractor. Should the bacteriological analysis indicate that the line is not disinfected as determined by the local State or Federal regulations, the Contractor shall repeat the disinfecting process as described above at no expense to the District.

B. All chemicals, taps, testing points, and apparatus required for disinfecting the lines shall be furnished by the Contractor.

C. All water for disinfection shall be furnished by the District as specified in the pressure and leakage tests. Contractor is to provide means of transporting water from Owner's delivery point to lines to be tested.

D. The contractor shall be responsible for the collection and delivery of water samples to be tested.

End of Section

SECTION 02000

VALVES, HYDRANTS AND METERS

01. SCOPE OF WORK: Work furnished under this section shall consist of all valves, meters, hydrants, and appurtenances installed as part of the water line piping.

02. GENERAL: All valves, meters, hydrants, and appurtenances shall be furnished and installed in accordance with Section 01400 "Piping General Requirements," and as shown on the drawings. All material shall be the same or greater pressure class than the joining pipe.

A. All Valves and Fittings greater than 2 inches and installed above ground shall be flanged, ANSI Class 125, unless otherwise noted.

B. All Valves Installed Below Ground shall be mechanical joint and have a valve box. If installed outside, asphalt and a concrete valve doughnut is to be used.

03. VALVES: Valves shall be provided as shown on the drawing and as specified herein. All valves shall open left and have open and close direction indicator.

A. Gate Valves: Gate valves shall be the double disc type RS seat manufactured and tested in accordance with the requirements of the latest revision to the AWWA Standard C500. Valves shall be non-rising stem unless otherwise noted.

1. All valves shall have a minimum design working pressure of 150 psig and a test pressure of 300 psig.

2. Valves 3 inches and smaller installed below ground shall have a valve box over the handwheel.

3. All valves 3 inches and smaller shall be all brass with 2" square nut and shall have a ball valve and threaded (NPT) connections. Valves described in this paragraph shall be Jenkins, Crane, Lukenhiemer or Mueller.

4. Valves to 10" in size shall be cast iron body, bronze discs and seat buna-o-ring gaskets high strength bronze stem 2" cast iron operating nut with mec