SECTION_00830_Connor_Sprngs_SD_Main_Ext_BID.pdf

00830-1

SECTION 00830

GENERAL CONSTRUCTION METHODS

1. SCOPE OF THE WORK

The work includes furnishing all labor, tools, equipment, materials, skills, and incidentals necessary or required to construct and complete in place all of the work shown on the plans and covered in these specifications in accordance with the prices submitted in the bid proposal. All construction procedures and techniques used and employed by the Contractor shall meet the applicable requirements of the Pipeline Safety Regulations, Code of Federal Regulations, Title 49, Latest Edition. All such procedures and techniques shall be conducted in accordance with safe and accepted pipeline construction practices.

2. BACKFILLING

2.1. General

After the pipe is lowered into the trench, selected backfill free from rocks and stones shall be uniformly compacted with approved mechanical tampers the full length of the pipe to a point one foot above the pipe in layers not exceeding 6”. The remainder of the trench shall be backfilled in 6" layers and compacted with approved mechanical tampers and shall not contain any stones weighing more than 50 pounds each.

2.2. Rock Excavation

In rock excavation, the bottom of the trench to a point one foot above the top of the pipe shall be finely pulverized soil, free from rocks and stones. The remainder of the backfill shall not contain over 75% broken stones, and the maximum stone size placed in the trench shall not weigh more than 50 pounds each. Excess rock and fragments shall be disposed of in a satisfactory manner off of the project site.

2.3. Compaction

2.3.1. Trenches

The compaction of backfill in trenches shall not be less than 95% in accordance with AASHTO Designation T99. The top 12” shall be compacted to 100% of specified density.

If additional water is necessary to obtain the optimum moisture content in the backfill, the Contractor shall add such water at no additional cost. Soil compaction tests may be performed to confirm the level of compaction meets this specification. The Contractor will be responsible for all costs incurred by the Owner associated with compaction tests yielding less than the specified percentage of compaction including re-testing as required.

2.3.2. Bore Pits

The compaction of backfill in bore pits shall not be less than 100% of theoretical maximum density. If additional water is necessary to obtain the optimum moisture content in the backfill, the Contractor shall add such water at no additional cost. If special backfill material is necessary to achieve compaction of 100% of theoretical maximum density, the Contractor shall add such material at no additional cost. Soil compaction tests may be performed to confirm the level of compaction meets this specification. The Contractor will be responsible for all costs incurred by the Owner associated with compaction tests yielding less than the specified percentage of compaction including re-testing as required.

00830-2

3. BARRICADES, WARNING SIGNS AND FLAGMEN

The Contractor shall provide, erect and maintain all necessary barricades, suitable and sufficient warning lights, danger signals and signs, provide sufficient number of watchmen and take all necessary precautions for the protection of the work and the safety of the public. If lanes of traffic are to be closed, the Contractor shall provide necessary certified flagmen. Certification shall be obtained from the Georgia Department of Transportation. Traffic control devices and placement shall be in accordance with the Georgia Utilities Coordinating Committee 1994 Manual on Traffic Control Procedures for Utilities as approved by the Georgia Department of Transportation.

4. CLEAN-UP

After the work is completed, the right-of-way and surrounding areas shall be cleaned of all rubbish and other debris and the premises left in a neat and presentable condition. Extra materials delivered upon the right-of-way by the Contractor and not actually used for the construction of the pipeline or appurtenances shall be removed by the Contractor at his own expense. Clean-up work shall follow closely behind and shall be considered a part of the normal operations. Clean-up work along the pipeline routes will not be permitted to lag behind the construction operations.

5. COMPLIANCE WITH THE GEORGIA DEPARTMENT OF TRANSPORTATION

This project is under the jurisdiction of a Permit granted to the Owner by the State of Georgia Department of Transportation and all work shall be completed in accordance with the Utility Accommodation Policy and Standards, thereof. The Contractor shall comply with all provisions required by the Georgia Department of Transportation including traffic control, clean-up, silt and erosion control and work schedules. The Georgia Department of Transportation reserves the right to inspect all work required by this contract for compliance with these policies, standards, and provisions. The Contractor shall secure all required permits from the Owner and shall give the proper Georgia Department of Transportation local office a 24-hour notification before commencing work within the right-of-way under the jurisdiction of the Georgia Department of Transportation.

6. EXISTING FENCES

The Contractor shall take down fences on or crossing the right-of-way for such periods of time only as are necessary to prosecute the work of clearing, grubbing, trenching, pipe laying, backfilling and cleanup. Gaps made in fences shall be closed in a substantial manner at night and during any suspension of work. All existing fences shall be restored to as good condition as before disturbed. All costs incurred in the removal and replacement of fences shall be included in the price bid per lineal foot of pipe. There will be no additional compensation.

7. EXTRA DEPTH DITCH

The Contractor shall install the proposed main at a depth greater than the minimum depth specified to avoid conflicts with proposed and existing (See Part 11 of this section, INTERFERENCE WITH EXISTING STRUCTURES) structures, in those areas requiring roadway and shoulder cuts and as directed by the Engineer. In these areas, the Contractor shall install the proposed main to a depth of 36" below the proposed, finished grade. Extra depth may also be required to maintain a minimum clearance of 12" between the top of the proposed main and the bottom of the proposed storm drainpipe. All changes in grade shall be made gradually.

It shall be the Contractor's responsibility to meet these criteria and to coordinate with the field representative of the Georgia Department of Transportation those areas requiring extra depth. Earthwork cross sections have been provided with the plans to help determine those areas requiring extra depth. It shall be the Contractor's responsibility to determine required elevations of the proposed main to avoid these conflicts. All costs incurred by extra depth shall be included in the price bid per lineal foot of pipe according to pipe size. There will be no additional compensation.

00830-3

GRASSING

Disturbed areas abutting lawns and yards shall be restored promptly. Finishing, dressing and grassing shall be completed immediately following backfilling as a continuous operation. Care shall be taken to provide positive drainage to avoid ponding. Restoration will not be permitted to lag behind construction operations.

Methods for grassing of public rights-of-way disturbed during construction shall meet the requirements of Section 700-GRASSING of the State of Georgia Department of Transportation's Standard Specifications for Road and Bridge Construction, Latest Edition. Where grass is disturbed beyond public rights-of-way, the methods for grassing shall meet the following minimum requirements.

7.1. Description

This item consists of furnishing and sowing grass seed. It includes the preparation of the ground, furnishing and applying mulch, water and fertilizer as herein specified. The type and amount of seed, fertilizer and lime will be selected by the Engineer at the time this work is done to suit soil, seasonal conditions and to match existing grass of adjacent areas.

7.2. Stand of Grass Required

It is the intent of this specification to require the Contractor to deliver a satisfactory stand of perennial grass before final payment will be made for any of the items herein described. If it is necessary to repeat any or all of the work, including plowing, fertilizer, seeding, and watering the Contractor shall never-the-less repeat these operations until a satisfactory stand is obtained. For this purpose, a satisfactory stand of grass is here defined as a full cover, over the areas to be seeded, with grass that is alive and growing, leaving no bare spots larger than one foot square.

7.3. Ground Preparation

After the area to be seeded has been brought to finish grade, lime (if required) shall be uniformly distributed at the prescribed rate over the seeding area, with a mechanical spreader. The ground shall be prepared by plowing, disking and harrowing to a depth of at least 4 inches until these areas are friable, well pulverized and the lime in the surface shall be smoothed out. All roots and stones larger than 3 inches in any dimension, and all other foreign material detrimental to final grading, maintenance and proper growth of the planting shall be removed.

7.4. Application of Fertilizer

Commercial fertilizer, 10-10-10, shall be distributed uniformly at the rate of 1,000 pounds per acre and shall be uniformly mixed with the soil to a depth of at least two inches by disking, harrowing or by other methods acceptable to the Engineer. Fertilizer shall not be applied when the wind makes it difficult to get satisfactory distribution.

7.5. Seeding

Seed of the prescribed type, labeled in accordance with the Georgia seed laws, rules and regulations shall be evenly spread with a mechanical spreader at rate sufficient to obtain a full stand of grass, but in no case less than 100 pounds of seed per acre.

7.6. Mulch

All areas to be seeded shall be uniformly mulched with a continuous blanket of wheat straw hay immediately after seeding. It is intended that mulch shall allow some sunlight to penetrate and air to circulate, at the same time shading the ground, reducing erosion and conserving soil moisture.

00830-4

7.6.1. Areas Contained by Silt and Erosion Control Devices

The rate of mulch application shall correspond to a depth of at least three inches (3”) according to the texture and moisture content of the mulch material within areas contained by silt and erosion devices.

7.6.2. Areas Outside Silt and Erosion Control Devices

The rate of mulch application shall correspond to a depth of at least six inches (6”) according to the texture and moisture content of the mulch material outside areas of silt and erosion devices.

7.7. Watering

Immediately after seeding, the Contractor shall soak the soil with water and shall keep all seeded areas continuously moist thereafter as necessary to insure proper maintenance of the grass.

7.8. Maintenance of Grass

The Contractor shall do all maintenance work necessary to keep all planted area in a satisfactory condition until the work is finally accepted. This shall include mowing, repairing washes that occur, reseeding, and watering as required to produce a healthy and growing stand of grass. Mowing will be required to remove tall and noxious weeds before they go to seed.

8. GUARANTY

All workmanship and material shall be guaranteed by the Contractor for one year after final acceptance and any defective workmanship, material, or equipment detected during this one-year period shall be replaced by the Contractor at no cost to the Owner. Final acceptance of the project will be made only after all equipment is placed in operation by the Contractor and is operating in the proper manner.

9. HIGHWAY CROSSINGS

Where lines cross highways under the jurisdiction of the Georgia Department of Transportation (Department), the Owner shall secure the necessary permits and permission from the Department before any work commences within such rights-of-way. After the Contractor has been notified by the Owner that the permits have been granted and permission obtained, the Contractor shall coordinate his activities and construction procedures with the proper authority of the Department. All construction practices and procedures within such rights-of-way shall be conducted in accordance with the Department's Utility Accommodation Policy and Standards.

10. INFORMATION CONCERNING CONDITIONS

The accuracy of information furnished by the Engineer and/or the plans and specifications as to underground and surface structures, foundation conditions, character of soil, position and quantity of ground and subsoil water, etc., are not guaranteed by the Owner. Bidders must satisfy themselves by personal examination and by such other means as they desire with respect to actual conditions in the nature of the ground and subsoil water and in regard to the locations of existing underground or surface structures. Unforeseen conditions shall not constitute a claim for increased compensation under the terms of the contract, nor constitute a basis for the cancellation thereof.

11. INTERFERENCE WITH EXISTING STRUCTURES

All existing utilities, pipes, drains or other structures on, above or below ground shall be carefully supported and protected from damage. If any such structures are damaged, they shall be restored to their original condition by or at the expense of the Contractor. A minimum clearance of 12" shall be maintained between

00830-5 the proposed pipeline and any existing structure. All costs incurred in meeting this requirement, including extra depth, shall be included in the price bid per linear foot of pipe and there will be no additional compensation.

Insulation spacers shall be installed when the proposed steel line pipe is in close proximity to a metallic structure.

12. JOINERS

12.1. General

All joiners shall be competent and experienced in polyethylene joining. All joiners shall have a complete working knowledge of the joining equipment and the procedures and precautions necessary for completing acceptable joints with a maximum of safety. Only electrically heated joining tools shall be used when joining polyethylene pipe and tubing. Only socket fusion will be allowed when joining polyethylene pipe and tubing to polyethylene fittings less than 2” in diameter.

Butt fusion will be allowed when joining pipe 2" in diameter and larger. Mechanical couplings will not be permitted. All joiners shall be qualified under the requirements set forth in Section 4 of these specifications, CERTIFICATION, LICENSE AND TEST REQUIREMENTS.

12.2. Re-qualification Requirements

Re-qualification tests shall be required if there is some specific reason to question a joiner's ability or if the joiner is not engaged in a given process of joining for a period of six months or more.

12.3. Qualification Records

Records of the test that establish the qualification of the joining procedure utilized on this project shall be maintained as long as that procedure is in use. The Contractor shall maintain a record of the qualification including the date and results of tests.

12.4. Procedure - General

The joining procedure followed during the qualifying tests shall be recorded in detail and shall be adhered to during subsequent construction. A copy of this joining procedure shall be furnished to the Engineer. Joining shall not be done when the quality of the completed joint is likely be impaired by the prevailing weather conditions including, but not limited to, airborne moisture, blowing sand, or high wind.

12.5. Inspection

The Engineers shall have the right to employ any reasonable means of determining the character of each joiner's work, and may from time to time require the Contractor to cut out coupons or test pieces for the purpose of determining whether the joining is satisfactory. The cost of repairs necessary to replace such test pieces shall be borne by the Contractor.

12.6. Standard of Acceptability for Joining of Polyethylene Pipe, Tubing and Fittings

The applicable requirements of the Pipeline Safety Regulations, Code of Federal Regulations, Title 49, Latest Edition shall be the standard of acceptability for joining of polyethylene pipe and fittings.

13. LAYING PIPE

All pipe shall be laid in a workmanlike manner in accordance with the best modern pipeline practice. It is intended that laying, as used here, includes welding, bending, insertion of slack and lowering. The Engineers may instruct the Contractor to leave "open ends" at various points during construction. Such open ends shall

00830-6 be connected at such time and in such manner as directed by the Engineer, but previous to the final test of the pipe. The providing of these open ends, if required, will be at locations designated by the Engineer and for the purpose of relieving strain from temperature changes which may develop after the line has been placed in the ditch and its temperature lowered.

14. LOCATION OF EXISTING UTILITIES

It shall be the Contractor's responsibility to have all utilities located prior to excavating. The Contractor shall request the location of all utilities by calling Georgia 811. The Contractor shall be aware of and familiar with all local, State and Federal Laws governing utility protection and conduct all excavation practices in accordance therewith.

15. MAINTAINING THE FLOW OF GAS

Construction shall be staged in order to ensure the system downstream of construction receives a constant flow of gas. At no time during the construction shall the flow gas be interrupted to the existing distribution system. If the flow of gas is interrupted at the fault of the Contractor, any costs or damages incurred by the City due to the loss of flow shall be the responsibility of the Contractor.

16. ORDER SEQUENCE OF WORK

To insure completion within the allotted time, the Engineer will designate the starting point or points for construction and the sequence in which the work shall be constructed, completed and placed in operation.

The Contractor shall observe and comply with the detail plans and all instructions from the Engineers pertaining to the sequence of work.

17. INTERNAL CLEANING OF PIPE AND TUBING

Before placing the facility into operation, the Contractor shall ensure that all pipe and tubing is internally free from welding icicles, rust, moisture, scale and any foreign particles. The Contractor shall remove all such material by propelling cleaning pigs through all line pipe and tubing installed for this project with compressed air or inert gas. This shall be repeated as many times as necessary to ensure removal of any such defects. Wire brush type cleaning pigs and standard cleaning pigs in succession shall be used for steel line pipe and cleaning pigs specifically designed for use with polyethylene internal diameters shall be used for polyethylene pipe and tubing. Foam drying pigs shall be used to dry line pipe and tubing where significant amounts of moisture are present. In such cases, it may be necessary to introduce a drying agent into the line to completely remove any moisture.

Where line valves will be included in the pressure testing of the facility in accordance with these specifications, internal cleaning of all pipe and tubing shall be completed prior to performing the pressure test.

18. PLACING FACILITY INTO OPERATION

After all fabrication, backfilling, and testing is completed and acceptable to the Engineer, the Contractor shall purge the newly constructed facility. Purge tees shall be provided and installed by the Contractor at no expense to the Owner. Purge tees shall be located at locations to ensure all piping and appurtenances are purge of all air. The Engineer shall be given 48 hours’ notice before the purging begins.

19. PLACING VALVES AND FITTINGS

Valves and fittings shall be placed at the location shown on the plans or as designated by the Engineer. Before placing in the trench, all valves and fittings shall be carefully examined, and any defects corrected. Before backfilling, all valves shall be thoroughly worked and properly lubricated. Valves, valve boxes and appurtenances shall be strictly set as shown in the detail on the plans.

00830-7

20. PRESSURE TESTING

20.1. General

All piping, associated valves and fittings and appurtenances shall be pressure tested in sections chosen by the Engineer unless specified otherwise by these specifications. All tests shall be conducted in the presence of the Engineer. The Engineer shall be given 48 hours’ notice before any pressure testing is conducted. The Contractor shall furnish suitable testing plugs or caps for the pipe, necessary compressors, pipe connections, gauges and other equipment and labor required. All breaks, leaks or defects in the pipe, valves, fittings or appurtenances shall be repaired and made good by the Contractor at his own expense. Following any necessary repairs, the section shall be re-tested until the test requirements have been successfully fulfilled.

The test medium shall be water, air or inert gas. If the test medium chosen is water, the Contractor shall pass dewatering pigs through the line as often as necessary to completely dry the line of all moisture. If necessary, a dewatering agent shall be added to the line to satisfy this requirement.

Where line valves will be included in the pressure testing of the facility in accordance with these specifications, internal cleaning of all pipe and tubing shall be completed prior to performing the pressure test.

20.2. Requirements

20.2.1. Main Lines

The following tests shall run continuously for 24 hours and each test shall be recorded on a chart recorder. The recording chart shall be 12” in diameter and shall not span more than

1.5 times the test pressure. The test pressure shall be verified by an accurate spring gauge and the recording chart shall show no drop in pressure during the test. If the recording chart shows a drop in pressure due to a temperature variation, the test shall exceed the 24 hours until the drop has recovered to the original test pressure. A test record shall be prepared for each completed test. A copy of the accepted record appears in Appendix A at the end of this section and may be reproduced for use on this project. The test chart and test record for each completed test shall be acceptable to the Engineer before the test pressure is purged from the pipe section under test.

After backfilling, all line pipe and associated valves and fittings designated as part of the “medium pressure” distribution system shall be tested in sections chosen by the Engineer to a pressure of 100 psig.

20.2.2. Service Lines

The following tests shall run continuously for thirty (30) minutes and shall be monitored by an accurate spring gauge. The gauge shall show no drop in pressure. Pressure testing of service lines shall be conducted after the connection to the existing service is completed and shall include the existing service line up to the valve at the meter location. If a leak has been identified downstream of the connection between the proposed service line and the existing service line, it shall be promptly reported to the Owner for repair. No part of a service line shall be placed into service until it is ensured that no leaks exist. A test record shall be prepared for each completed test. A copy of the accepted record appears in Appendix A at the end of this section and may be reproduced for use on this project. The test record for each completed test shall be acceptable to the Engineer before the test pressure is purged from the pipe section under test.

After backfilling, all service lines, associated valves and fittings shall be tested to a pressure of 100 psig.

00830-8

21. PREVENTION OF ACCIDENTAL IGNITION

The Contractor shall take the necessary precautions to prevent the accidental ignition of natural gas when cutting into and/or removing a section of pipe. These precautions shall include, but not be limited to, grounding and bonding. The cutting into of a section of pipe shall not commence until that section is isolated and the pressure in the section has been reduced to atmospheric. Only mechanical cutters will be allowed when cutting into a pipe section.

22. PROTECTION OF FINISHED WORK

The Contractor will be held responsible for all work installed and shall be required to replace or repair any work damaged by any source or cause whatsoever until final acceptance of the work done by the Owner.

23. PROTECTION OF PAVEMENT

When working along paved streets or roads, the Contractor shall use rubber-tired or other equipment which will not damage the paving. If pavement is damaged through negligence or carelessness on the part of the Contractor during construction, it shall be replaced at no expense to the Owner. Mats shall be used to support tracked equipment while in use or while sitting on pavement. In no case shall a tracked vehicle be "walked" along a paved road or street from one section of work to another.

24. PROTECTION OF TREES

The Contractor shall remove only such trees on or along the work as the Engineer permits and shall carefully protect all other trees adjacent to the work. He shall not permit excavating machinery or trucks to scrape the bark or tear the limbs from the trees, nor connect ropes or guy cables to them.

25. PROTECTION OF WELDED SECTIONS

If it shall be necessary to stop work for any reason before the sections are welded together, suitable protection must be placed on the ends of the pipe so that they may be kept fully free from obstructions. These precautions must be carefully observed and at no time neglected as the line must be delivered to the Owner ready for operation entirely free from water, dirt or other obstruction, and the line, before its completion and acceptance, must be absolutely clean inside.

26. RECORD DRAWINGS

The Contractor shall submit accurate and detailed record drawings of the completed installation in plan.

Record drawings shall accurately show any changes in the existing facilities that may differ from that as shown on the plans including locations, sizes and materials. Record drawings shall accurately show by detailed measurements the locations of all proposed appurtenances to the construction including regulating stations, farm tap assemblies, valves, cathodic protection test stations, fittings, etc. Record drawings shall show the as-built alignment of all line pipe installed referencing permanent structures or, if not available as in the case of roadway relocation, station numbers and offsets. Alignment shall be referenced at 100’ intervals. Where the line pipe is installed at depths other than those proposed, the record drawings shall accurately show the locations and installation depths. Record drawings shall be submitted on the full-size contract plan drawings.

27. RIGHT-OF-WAY AND EASEMENTS

The Owner will provide all necessary permits, easements and rights-of-way through and over private property and along and under the highways and railways.

00830-9

28. ROCK EXCAVATION

All material shall be considered as rock which cannot be excavated except by drilling, blasting or wedging.

It shall consist of undecomposed stone in solid ledges or of boulders of not less than 1/2 cubic yard volume.

When rock is encountered, the earth shall be cleared from the rock and the Engineers notified. The Engineers shall then measure the rock, after which it shall be excavated to a depth of 6" below grade line. Then the bottom of the trench shall be brought back up to grade by filling with selected material thoroughly compacted.

Rock excavation by blasting shall be at least 75' in advance of pipe laying. Before blasting, the Contractor shall cover the excavation with heavy timbers and material in such manner as to protect the adjacent property owners from damage. The Contractor will be responsible for all damage.

29. SILT AND EROSION CONTROL DEVICES

29.1. General

Best Management Practices (BMP’s) shall be implemented by the Contractor to prevent or minimize erosion and control sedimentation with the installation and implementation of silt and erosion control devices before any land disturbing activity commences. Silt and erosion control devices shown on the details in the plans and at the locations shown in the plans shall be considered a minimum and additional measures deemed necessary shall be immediately implemented to effectively prevent or minimize erosion and control sedimentation. Silt and erosion control devices shall be effectively maintained and shall be removed once the erosion of the disturbed area has been permanently prevented and the area stabilized. Installation, maintenance and removal of silt and erosion control devices shall be in accordance with the minimum requirements of the following minimum standards.

-Manual for Erosion and Sediment Control in Georgia, Latest Edition -State of Georgia Department of Transportation Standard Specifications, Construction of Roads and Bridges, Latest Edition -National Pollutant Discharge Elimination System (NPDES) Permit for Storm Water Discharges from Infrastructure Construction Activities, Permit No. GAR100002.

29.2. Maintenance and Inspection

Silt and erosion control devices shall be inspected by the Contractor for effectiveness, damage and proper installation at the end of each working day not to exceed once every seven (7) calendar days and within 24 hours of the end of a rainfall event that is 0.5 inches or greater. Repair of damage or improper installation shall be remedied by the Contractor within 24 hours of inspection. Improper effectiveness of any silt and erosion control device or combination thereof that has been properly installed and maintained shall be reported to the Engineer within 24 hours of inspection. Silt and erosion control devices shall be cleaned of sediment as required for the specific device. Disposal of sediment shall be in a fashion that it will not re-enter the silt and erosion control devices. All damage or improper installation shall be promptly remedied by the Contractor.

29.3. Temporary Silt Fence

29.3.1. General

Temporary silt fence shall be installed only in areas where sheet flow conditions exist. The drainage area for temporary silt fence shall not exceed one-quarter of an acre per 100 feet of non-reinforced fence or one-half acre per 100 feet of wire-reinforced silt fence.

Temporary silt fence shall not be installed in waterways or areas of concentrated flow.

Filter fabric shall be replaced when deteriorated or within six months whichever occurs first. Temporary silt fence shall be cleaned of sediment before reaching two-thirds full.

00830-10

29.3.2. Type A

Type A temporary silt fence shall be installed where life expectancy is greater than six months or slope gradient is steeper than 3:1 or otherwise directed. Type A temporary silt fence shall be installed as shown on the detail in the plans. Wood or steel posts shall begin at the center of the lowest point and shall be set 18” in the ground with a spacing of no more than 6 feet. Filter fabric shall be installed 6” deep with a height above ground of 28”.

29.3.3. Type B

Type B temporary silt fence shall be installed where life expectancy is less than six months or slope gradient is less than or equal to 3:1 or otherwise directed.

Type B temporary silt fence shall be installed as shown on the detail in the plans.

Wood or steel posts shall begin at the center of the lowest point and shall be set 18” in the ground with a spacing of no more than 6 feet. Filter fabric shall be installed 4” deep with a height above ground of 16”.

29.3.4. Type C

Type C temporary silt fence shall be installed where fill slopes exceed a vertical height of 20' and slope gradient is steeper than 3:1 or otherwise directed. Type C temporary silt fence shall be installed as shown on the detail in the plans. Steel posts shall begin at the center of the lowest point and shall be set 18” in the ground with a spacing of no more than 4 feet. Filter fabric shall be installed 6” deep with a height above ground of 28” and shall be woven wire supported.

29.4. Construction Exits

Construction exits shall be located at all points where traffic exits the construction area to a public or private right-of-way, street, alley or parking area. Construction exit pad shall be constructed over a geotextile liner with National Stone Association R-2 or Department of Transportation No. 3 size coarse aggregate (1-1/2”-3-1/2”). Construction exit pad shall be a minimum of 20 feet wide by 50 feet in length and a minimum thickness of 6” and shall be excavated 3” below existing grade.

Construction exits shall be maintained in such condition that will prevent tracking or the flow of mud onto public or private right-of-ways, streets, alleys or parking areas. Construction exits shall be periodically dressed with 1-1/2”-3-1/2” stone and any mud or debris tracked or spilled onto public or private right-of-ways, streets, alleys or parking areas shall be removed immediately.

29.5. Erosion Control Matting and Blankets

Erosion control matting and blankets shall be applied on steep slopes where the hazard of erosion is high, and planting is likely to be too slow to provide adequate cover. Erosion control matting shall be applied in concentrated flow area, slopes 2.5:1 and steeper with a height of ten feet or greater and cuts and fills within stream banks. The choice of the installation of matting or blankets, permanent or temporary shall be dependent on the specific condition of the area to be stabilized and the manufacturer’s recommendations to obtain maximum erosion control.

30. SILT AND EROSION CONTROL PERMITTING

This project is under the jurisdiction of the Environmental Protection Division (EPD) General National Pollutant Discharge Elimination System (NPDES) Permit, No. GAR100002, for Storm Water Discharges from Infrastructure Construction Activities. An erosion control plan for this project is included in the plans.

It will be the responsibility of the Contractor to obtain and meet the requirements and conditions set forth by this permit. The permit requirements and conditions are available through the EPD. All required documents necessary to the permit shall be prepared by the Contractor and provided by the Contractor to the EPD

00830-11 including but not limited to the Notice of Intent (NOI) and Notice of Termination (NOT) as well as all required inspection forms and documents. Copies of all documents and reports prepared by the Contractor and provided by the Contractor to the EPD shall be provided to the Owner and the Engineer at the time they are provided to the EPD.

This project is also under the jurisdiction of storm water discharge monitoring as required by this permit. A Comprehensive Monitoring Plan (CMP) is included in the plans. It will be the responsibility of the Contractor to meet the requirements and conditions set forth by the NPDES Permit for storm water discharge monitoring including but not limited to monitoring and sampling reports. Copies of all documents and reports prepared by the Contractor and provided by the Contractor to the EPD shall be provided to the Owner and the Engineer at the time they are provided to the EPD.

31. TAPPING OF MAINS

Taps into mains under pressure without the interruption of gas flow shall be made at the locations shown on the plans. The Contractor shall have all materials on hand and shall conduct the work in a manner to ensure the tapping of the main is conducted in a safe manner and in the minimum of time. The Contractor shall utilize only those persons who are fully qualified and knowledgeable in the tapping of mains under pressure.

The Contractor shall furnish and install only those materials designed for making taps under pressure. The Contractor shall furnish the Engineer all coupons cut out of the existing main during the tapping operation.

32. TRENCH EXCAVATION

Pipe trenches shall be excavated on lines shown on the plans. The bottom of the trenches shall be hand dressed so that the pipe has even bearing on solid, undisturbed earth throughout its length. Trenches shall be of sufficient width to provide ample working space on each side of the pipe and for maintaining a straight line of pipe. The Engineers shall have the right to limit the amount of trench open at any one time. All excavated material shall be so placed as not to interfere with public travel on the roadway along which the lines are laid.

Lines shall be constructed with 36" of cover below finished, proposed grade. The depth of cover beneath roadways shall be 48". Lines shall be placed at greater depths when shown on the plans or as directed by the Engineer. All grade changes shall be made gradually. In laying pipe across water courses or depressions of any kind, the minimum depth herein specified shall be maintained at the bottom of the depression.

.............................................................................END OF SECTION

00830-12

SECTION 00830: APPENDIX A

00830-13

CITY OF SOCIAL CIRCLE, GEORGIA

CONNOR SPRINGS S/D MAIN EXTENSION

PRESSURE TEST RECORD

Test Medium (Check One): Air Nitrogen Water Other

Length of Test: Hours Minutes

Test Beginning: , 20 at am / pm (Circle One) Owner’s Initials

Test Ending: , 20 at am / pm (Circle One) Owner’s Initials

Name of Owner’s Representative: Title:

Test Section From: Sta. Right / Left (Circle One), (Location, Type of Fitting, Etc.)

Test Section To: Sta. Right / Left (Circle One), (Location, Type of Fitting, Etc.)

Contractor: , , (Name, City, State)

Name of Superintendent/Foreman:

Pipe Supplier: , , (Name, City, State)

Pipe Manufacturer: , , (Name, City, State)

Pipe Size: “ O.D. “ W.T./DR Grade:

“ O.D. “ W.T./DR Grade:

Joining Method: Shielded Metal Arc Welding (SMAW) / Fusion (Circle One) Attach additional sheets as necessary.