Technica_Provisions.pdf

DIVISION I

GENERAL TECHNICAL PROVISIONS

01010 - 1

SECTION 01010

SUMMARY OF WORK

PART I - GENERAL

1.01 REQUIREMENT INCLUDED

A. The work to be performed under this Contract shall consist of furnishing all tools, equipment, materials, supplies, and manufactured articles and for furnishing all transportation and services, including fuel, power, and essential communications, and for fulfillment of all labor, work, or other operations required for fulfillment of the Contract in strict accordance with the specifications, drawings, and other Contract Documents as herein before defined, all of which are made a part hereof, and including such detail sketches as may be furnished by the COR from time to dime during construction in explanation of said Contract Documents. The work shall be complete, and all work materials, and services not expressly shown or called for in the Contract Documents that may be necessary for the complete and proper construction of the work in good faith shall be performed furnished and installed by the CONTRACTOR as though originally specified or shown, at no increase or cost to the Owner.

1.02 WORK COVERED BY CONTRACT DOCUMENTS

A. The Work of this Phase is comprised of the drilling, pump testing, and water quality analysis of new domestic well(s). Nine wells in two locations are identified for well drilling. Well development will consist of installation of steel casing, grout, submersible pump, pitless unit & well cap, drop pipe & cable, and pump controls for each well. Additionally, each location shall require the abandonment of an existing well.

1.03 CONTRACT PERIOD

A. The work hereunder will be constructed under the bid price as agreed per the contract.

B. The contractor shall complete the WORK within the time specified in the agreement.

C. Construction work shall not be normally permitted on Saturdays, Sundays, or Federal and/or Tribal holidays. The Contractor may submit a written request to the COR at least 48 hour in advance, for permission to work on any Saturday, Sunday, or Federal holiday. Written approval must be obtained before the Contractor may work on any such day.

1.04 SEQUENCE OF WORK

A. The Contractor shall construct work in phases or stages and accommodate the continuous and uninterrupted operation of the existing utilities (water, sewer, 01010 - 2

01010 - 2 drainage & stormwater, electric, cable, and transportation). The Contractor shall coordinate construction schedule and operations with the COR.

The following is a tentative construction sequence for the major construction operations. Variations from the schedule may be necessary due to other constraints. However, in no case shall the Contractor violate the condition of

1.03 A. as above.

1. Drilling the wells. This activity involves drilling a new wells, evaluating the well's production capability and water quality prior to installing submersible pumps.

2. Placing a new pumps into the wells and piping to the associated homes.

3. Pump Start-up

4. Abandonment of pre-existing wells.

5. Complete Site and Finish Work

1.05 CONTRACTOR USE OF PROJECT SITE

A. The CONTRACTOR’s use of the project sites shall be limited to construction operations, including on-site storage of materials and equipment. Further use of the owners' facilities and storage areas must be approved by the COR.

END OF SECTION

01500 - 1

SECTION 01500

CONSTRUCTION FACILITIES AND TEMPORARY CONTROLS

1.01 SECTION INCLUDES

A. Temporary Utilities: Electricity, lighting, heat, ventilation, telephone service, water, and sanitary facilities for the CONTRACTOR.

B. Temporary Controls: Barriers, enclosures and fencing, protection of the Work, and water control.

C. Construction Facilities: Parking, progress cleaning.

1.02 RELATED SECTIONS

A. Section 01700 - Project Cleaning

1.03 TEMPORARY ELECTRICITY

A. Provide temporary electric service as required. Power consumption shall not disrupt Tribe's need for continuous service.

B. The CONTRACTOR will be responsible to pay for any and all power consumption necessary to the work performed as a result of the contract.

1.04 TEMPORARY FLAGMEN, BARRICADES AND SIGNS

A. Provide adequate flagmen, barricades, lights, and signs for the protection of the work and the public at all times regardless of whether or not such flagmen, barricades, lights, and signs are ordered by the ENGINEER.

B. The CONTRACTOR and his Surety shall be liable for injuries and damages to persons and property suffered by reasons of the CONTRACTOR’s operations or any negligence in connection herewith.

1.05 TEMPORARY HEAT

A. The CONTRACTOR will provide and pay for heat as required to maintain the comfort of the CONTRACTOR’s office space.

1.06 TEMPORARY VENTILATION

A. Ventilate enclosed areas to assist cure of materials, to dissipate humidity, and to prevent accumulation of dust, fumes, vapors, or gases.

01500 - 2

1.07 TELEPHONE SERVICE

A. Provide, maintain, and pay for telephone service to field supervisor's office at time of project mobilization.

1.08 TEMPORARY WATER SERVICE

A. Provide and maintain suitable quality water service required for construction operations.

1.09 TEMPORARY SANITARY FACILITIES

A. Provide and maintain suitable temporary toilet facilities required for construction operations.

B. Sanitary accommodations shall meet the requirements of all local, State and

Federal health codes, laws, and regulations.

1.10 BARRIERS

A. Provide barriers to prevent unauthorized entry to construction areas to allow for Owner's use of site, and to protect existing facilities and adjacent properties from damage from construction operations and demolition.

B. Provide protection for plant life designated to remain. Replace damaged plant life.

C. Protect non-owned vehicular traffic, stored materials, site and structures from damage.

1.11 FENCING

A. Construction: Commercial grade construction fence.

B. Provide 5-foot high fence around any excavations left open overnight.

1.12 WATER CONTROL

A. Grade site to drain. Maintain excavations free of water. Provide, operate, and maintain pumping equipment.

B. Protect site from puddling or running water. Provide water barriers as required to protect site from soil erosion.

1.13 PROTECTION OF INSTALLED WORK

A. Protect installed Work and provide special protection where specified in individual specification Sections.

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B. Provide temporary and removable protection for installed Products. Control activity in immediate work area to minimize damage.

C. Prohibit traffic from landscaped areas.

1.14 SECURITY

A. Provide security and facilities to protect Work, and existing facilities, and Tribe's operations from unauthorized entry, vandalism, or theft.

B. Provide security for CONTRACTOR’s materials and equipment as necessary.

Contact Tribal Public Safety for recommendations.

1.15 PARKING

A. Arrange for temporary gravel surface parking areas to accommodate construction personnel.

B. When site space is not adequate, provide additional off-site parking.

1.16 PROGRESS CLEANING

A. Maintain areas free of waste materials, debris, and rubbish. Maintain site in a clean and orderly condition.

B. Remove waste materials, debris, and rubbish from site weekly and dispose off-site.

1.17 REMOVAL OF UTILITIES, FACILITIES, AND CONTROLS

A. Remove temporary above grade or buried utilities, equipment, facilities, materials, prior to Substantial Completion inspection.

B. Clean and repair damage caused by installation or use of temporary work.

C. Restore existing facilities used during construction to original condition. Restore permanent facilities used during construction to specified condition.

01730 - 1

SECTION 01730

OPERATION AND MAINTENANCE DATA

1.01 SECTION INCLUDES

A. Format and content of manuals.

B. Instruction of Owner's personnel.

C. Schedule of submittals.

1.02 RELATED SECTIONS

A. Section 01300 - Submittals.

B. Section 01400 - Quality Control.

C. Section 01600 - Material and Equipment.

D. Section 01740 - Warranties and Bonds.

E. Individual Specifications Sections: Specific requirements for operation and maintenance data.

1.03 QUALITY ASSURANCE

A. Prepare instructions and data by personnel experienced in maintenance and operation of described products.

1.04 FORMAT

A. Prepare data in the form of an instructional manual.

B. Binders: Commercial quality, 8-1/2 x 11 inch three-ring binders with hardback, clearable, plastic covers; two-inch maximum ring size. When multiple binders are used, correlate data into related consistent groupings.

C. Cover: Identify each binder with typed or printed title OPERATION AND MAINTENANCE

INSTRUCTIONS; list title of Project; identify subject matter of contents.

D. Arrange contents by process flow under section numbers and sequence of Table of Contents of this Project Manual.

E. Provide tabbed flyleaf for each separate product and system, with typed description of product and major component parts of equipment.

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F. Text: Manufacturer's printed data, or typewritten data on 20 pound paper.

G. Drawings: Provide with reinforced punched binder tab. Bind in with text; fold larger drawings to size of text pages.

1.05 CONTENTS, EACH VOLUME

A. Table of Contents: Provide title of Project; names, addresses, and telephone numbers of COR, subconsultants, and Contractor with name of responsible parties; schedule of products and systems, indexed to content of the volume.

B. For Each Product or System: List names, addresses and telephone numbers of

Subcontractors and suppliers, including local source of supplies and replacement parts.

C. Product Data: Mark each sheet to clearly identify specific products and component parts, and data applicable to installation. Delete inapplicable information.

D. Drawings: Supplement product data to illustrate relations of component parts of equipment and systems, to show control and flow diagrams. Do not use Project record Documents as maintenance drawings.

E. Type Text: As required to supplement product data. Provide logical sequence of instructions for each procedure, incorporating manufacturer's instructions specified in Section 01400.

F. Warranties and Bonds: As specified in Section 01740.

1.06 MANUAL FOR EQUIPMENT AND SYSTEMS

A. Each Item of Equipment and Each System: Include description of unit or system, and component parts. Identify function, normal operating characteristics, and limiting conditions. Include performance curves, with engineering data and tests, and complete nomenclature and commercial number of replaceable parts.

B. Panelboard Circuit Directories; Provide electrical service characteristics, controls and communications.

C. Include color-coded wiring diagrams as installed.

D. Operating Procedures: Include start-up, break-in, and routine normal operating instructions and sequences. Include regulation, control, stopping, shutdown, and emergency instructions. Include summer, winter, and any special operating instructions.

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E. Maintenance Requirements: Include routine procedures and guide for trouble-shooting; disassembly, repair, and reassembly instructions; and alignment, adjusting, balancing, and checking instructions.

F. Provide servicing and lubrication schedule, and list of lubricants required.

G. Include manufacturer's printed operation and maintenance instructions.

H. Include sequence of operation by controls manufacturer.

I. Provide original manufacturer's parts list, illustrations, assembly drawings, and diagrams required for maintenance.

J. Provide control diagrams by controls manufacturer as installed.

K. Provide Contractor's coordination drawings, with color-coded piping diagrams as installed.

L. Provide charts of valve tag numbers, with location and function of each valve, keyed to flow and control diagrams.

M. Provide list of original manufacturer's spare parts, current prices, and recommended quantities to be maintained in storage.

N. Additional Requirements: As specified in individual product specification Sections.

O. Provide a listing in Table of Contents for design data, with tabbed flysheet and space for insertion of data.

1.08 INSTRUCTION OF OWNER PERSONNEL

A. Before final inspection, instruct Owner's designated personnel in operation, adjustment, and maintenance of products, equipment, and systems, at agreed upon times.

B. For equipment requiring seasonal operation, perform instructions for other seasons within six months.

C. Use operation and maintenance manuals as basis for instruction. Review contents of manual with personnel in detail to explain all aspects of operation and maintenance.

D. Prepare and insert additional data in Operation and Maintenance Manual when need for such data becomes apparent during instruction.

1.09 SUBMITTALS

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A. Submit two copies of preliminary draft or proposed formats and outlines of contents before start of Work. COR will review draft and return one copy with comments.

B. For equipment, or component parts of equipment put into service during construction and operated by Owner, submit documents within ten days after acceptance.

C. Submit one copy of completed volumes in final form 15 days prior to final inspection. Copy will be returned after final inspection with COR comments. Revise content of documents as required prior to final submittal.

D. Submit six copies of revised volumes of data in final form with ten days after final inspection.

02200 - 1

SECTION 02200

EXCAVATION, TRENCHING AND BACKFILLING

1.01 WORK INCLUDED

A. Strip Topsoil

B. Excavation and trenching for pipe lines.

C. Backfilling of trenches.

D. Stream Crossing E. Ledge Removal F. Frost Protection G. Loaming and Seeding H. Construction Staking

1. 02 SUBMITTALS

A. Records:

1. The CONTRACTOR shall maintain a drawing during the project showing locations of all facilities installed under this contract.

2. This record shall include, but not be limited to, locations of all valves, hydrants, cast iron fittings, corporation stops, curb stops, tapped coupling, thrust blocks, and existing sewer service lines.

3. Location of these items shall be referenced to three permanent structures or objects.

B. A Sample of Rigid Extruded Polystyrene Insulation

1.03 PRODUCTS

A. Insulation: Insulation shall be Amofoam-CM (or equal rigid) extruded polystyrene board with a minimum in-place thickness of 2 inches. This insulation is designed for direct burial and is commonly referred to “utility-grade” insulation board.

1.02 RELATED WORK

A. Section 02228 - Borrow and bedding Material

B. Section 02270 - Temporary Erosion Control

PART 2 - EXECUTION

2.01 EXCAVATION:

DIVISION 2

SITE WORK

02200 - 2

A. The CONTRACTOR shall perform all excavation of every description, and of whatever substances encountered to the depths indicated on the drawings including removal of trees and stumps if required.

B. Excavated materials shall be stockpiled a safe distance from the trench, a minimum 2 feet or greater setback from toe to edge is required to avoid overloading and to prevent slides or cave-ins.

C. All current OSHA Safety Guidelines shall be followed.

1. Perform excavation in such a manner that will prevent any possibility of undermining and disturbing the foundations of any existing structures and any Work previously completed under this Contract.

2. Where existing buildings and other structures are in proximity to the proposed construction, exercise extreme caution and utilize whatever precautionary measures that may be required.

3. After construction is complete the CONTRACTOR will be responsible for returning the work-site to a condition equal to or better than existed prior to construction.

D. There is no guarantee made as to the correctness of the location shown or to the completeness of the information given as to the location of underground utilities (water lines, sewer lines, telephone cables, oil pipelines, storm drains, culverts, gas mains, electric conduits, etc.).

1. Use manual excavation methods to locate existing utilities.

2. The CONTRACTOR is responsible to repair and/or replace any and all utilities damaged in the course of the WORK of this project.

3. The CONTRACTOR will NOT receive any additional compensation for damaged utilities replacement and/or repair.

E. All excavation materials not required for fill or backfill shall be removed and wasted on the site by burying or as otherwise directed by the COR. If the COR so decrees, the materials shall be wasted off-site at the CONTRACTOR’S expense.

F. All excavation shall be made by open cut except as shown on the plans.

1. The sidewalls of trenches shall be kept as nearly vertical as practical for the lower 4 feet of trench depth and where required, shall be properly sloped and/or sheathed and braced.

2. Excavated material shall be stockpiled at a safe distance from the trench; a minimum 2 feet setback from toe to edge is required.

02200 - 3

3. Trenches shall be no less than 12 inches nor more than 20 inches wider than the outside of the diameter of the pipe laid therein, unless specifically approved by the COR and shall be excavated true to line.

4. In the event that a wider trench is allowed, compaction shall be required to

90% of maximum density throughout the pipe zone to the trench walls.

5. The maximum width of the trench specified applies to the width at and below the level of the top of the pipe.

6. The width of the trench above that level may be as wide as necessary for sheathing and bracing, and the proper installation of the work, but care shall be taken not to injure abutting property.

G. Excavation for manholes, structures and other accessories shall be sufficient to leave at least 1-foot clearance between their outer surface and the embankment or timber that may be used to hold the banks and to protect them.

H. It shall be the CONTRACTOR's sole responsibility to protect or reinstall or replace with equal or better all culverts as required for the satisfactory performance of the work and maintaining the existing drainage.

2.02 GRADING:

A. All grading in the vicinity of the trench excavation shall be controlled to prevent surface water from flowing into the trenches.

B. During excavation, materials suitable for backfilling shall be piled in an orderly manner a sufficient distance back from the edges of the trenches to avoid overloading or to prevent slides or cave-ins.

C. Materials unsuitable or backfilling shall be wasted as approved by the COR.

2.03 REMOVAL OF WATER (NOT ANTICIPATED):

A. The CONTRACTOR shall remove and dispose of all water entering the trenches and shall keep the trenches water free until the sewer mains, fittings, valves, and other appurtenances are in place and sealed against the entrance of water.

B. Use of a mud pump for removal of nuisance water shall be at no extra cost and is not considered de-watering.

C. Dewatering shall be defined as continuous pumping with well points required to maintain a sufficiently dry excavation.

02200 - 4

D. Removal of water from excavations without the use of well points shall not be considered as dewatering.

E. Written approval shall be obtained from the COR prior to commencement of dewatering as defined in this section.

F. In no case shall water, earth, or any foreign materials be allowed to enter the water and/or sewer piping.

G. The CONTRACTOR shall obtain and pay for any required NPDES permit needed for dewatering.

2.04 PROTECTION OF EXCAVATION:

A. The CONTRACTOR shall provide suitable sheathing, shoring and bracing to protect all excavations as required to provide safe working conditions in conformance with safety regulations.

B. Damage resulting from settlement, slides, cave-ins, water pressure and other causes due to improper shoring, bracing or sheathing shall be repaired by the CONTRACTOR at his expense.

C. The CONTRACTOR shall provide adequate signs, barricades, amber lights and watchmen, and take all necessary precautions for the protection of the work and the safety of the public.

1. All barricades and obstructions shall be protected at night by amber signal lights, which shall be kept burning from sunset to sunrise.

2. Barricades shall be of substantial construction and shall be painted white or with reflective paint to increase their visibility at night.

3. Suitable signs shall be placed so as to show in advance where construction, barricades or detours exist. Construction signing and barricades shall conform to the "Manual on Uniform Traffic Control Devices."

4. The CONTRACTOR shall at all times perform his work so as to insure the least possible obstruction to traffic or inconvenience to the general public and the residents of the vicinity of the work, and to insure the protection of persons and property in a manner satisfactory to the COR.

5. No road or street shall be closed to the public except with the approval of the

COR.

6. Fire hydrants on or adjacent to the work shall be kept accessible to fire fighting equipment at all times.

02200 - 5

7. Temporary provisions shall be made by the CONTRACTOR to insure the use of sidewalk, and the proper functioning of all gutter, sewer inlets, drainage ditches and irrigation ditches, which shall not be obstructed, except as approved by the COR.

8. All open trenches should be backfilled each day. No excavation shall be left open overnight without proper barricades or fencing.

2.05 PROTECTION OF EXISTING UTILITIES:

A. It shall be the CONTRACTOR's responsibility to determine the locations of any existing underground utilities not shown on the drawings and to confirm the exact locations of those existing utilities shown on the drawings.

B. All existing utilities shall be protected from damage during excavation and backfilling of trenches, and if damaged, shall be repaired or replaced by the CONTRACTOR at his expense.

2.06 SEPARATION OF WATER AND SEWER LINES:

A. For horizontal separation, water line, including service lines to within 5 feet of a home, should be laid at least 10 feet horizontally from any existing or proposed sewer line.

B. Should local conditions prevent a lateral separation of 10 feet, a water line may be laid closer to a sewer line if the top of the sewer is at least 18 inches below the bottom of the water line; provided the water line is in a separate trench or on an undisturbed shelf and only with the written approval of the COR.

C. For vertical separation, whenever a water line crosses a sewer line, the water shall be laid at such an elevation that separation (O.D. to O.D.) is at least 18 inches.

D. The construction shall be such so that both joints of the water line are equidistant and as far as possible from the sewer main joint.

E. If the water service line is raised to less than 5 feet of cover to cross over a sewer main, it shall be properly insulated. Minimum water service line depth of bury is 4 feet.

F. When it is impossible to obtain proper horizontal and vertical separation as stipulated above, the sewer shall be designed and constructed equal to water pipe and shall be pressure tested to assure watertightness prior to backfilling, or the water main or sewer main can be encased in a watertight carrier pipe equal to exceeding the rating of the respective pipe and a minimum of 10 feet on either side of the crossing; both subject to written approval of the COR.

2.07 TRENCH BACKFILLING:

02200 - 6

A. After the jointing is completed and the pipe has been approved by the COR, the trench shall be backfilled to 6 inches over the top of the pipe with suitable material as defined in Section 02228.

B. The backfill materials shall be placed evenly around and over the pipe in 6 inches layers and thoroughly compacted by tamping.

C. After the initial backfill has been placed in the manner specified, the remaining backfill, which can be native material with the approval of the COR, shall be replaced and compacted by tamping with a mechanical tamper in lifts not to exceed 12 inches unless approved by the COR.

D. Thickness of backfill layers exceeding 12 inches may be approved by the COR based on the type of soil encountered and the field performance of the equipment used.

E. If greater than 12 inches thick compact layers are approved, the CONTRACTOR shall hand excavate to the test level at locations designated by the COR and then after the COR has obtained his test, refill the test excavation with compacted backfill to the specified density.

F. Throughout the warranty period of the contract, the CONTRACTOR shall be required to fill and compact any areas where settlement has taken place, and is also responsible for the settlement of any adjacent structure or object caused by any excavation performed under this contract.

1. Any trenches improperly backfilled or where settlement occurs, shall be reopened to the depth required for proper compacting, then refilled and compacted at the expense of the CONTRACTOR.

G. The surface shall be restored to the required grade and compaction, mounded over and smoothed off or resurfaced as required.

H. All backfill shall be compacted to a density not less than the density of the surrounding undisturbed soil.

1. Water Jetting: The introduction of water in the pipe embedment or final backfill material shall NOT be permitted as a means of compaction.

2. Using the bucket of a backhoe or excavator to press down on the backfill shall NOT be permitted as a means of compaction.

I. Surplus materials shall be disposed of as directed by the COR.

J. Trench backfill within the limits of a roadway shall require special compaction to a density not less than 90% of the maximum density determined by ASTM D 1557 from pipe level to within three feet of the surface.

02200 - 7

1. The top three feet shall be compacted to not less than 95% of the maximum density determined by ASTM D 1557.

2. Roadways for the purposes of backfilling and compaction shall include driveways and unimproved roads as well as paved streets and highways.

3. The location of the roadway limits for the purposes of this section shall be approved by the COR in the field and may include highway shoulders and drainage ditches.

4 Backfill in roadways shall be compacted in a maximum lift of 6 inches using a mechanical tamper.

5. Thickness of backfill layers exceeding 6 inches may be approved by the COR based on the type of soil encountered and field performance of equipment used.

6. If greater than 6 inches thick compacted layers are approved, the

CONTRACTOR shall hand excavate to the test level at locations approved by the COR and then, after the test is taken, refill the test excavation with compacted backfill to the specified density.

K. In lieu of this special compaction the CONTRACTOR may use, at his expense, well-graded gravel as backfill.

1. The gravel shall be clean and may vary in size from ½ inch to 1 ½ inch with not more than 10% of the material less than ½ inch in size.

2. The gravel shall be compacted in 6 inches layers to a relative density of 90% determined by ASTM D-2049, as approved by the COR.

L. Backfill and compaction around manholes, hydrants, valve boxes and other appurtenances shall be in lifts not to exceed 12 inches and shall be compacted to a density not less than 90% of the maximum density determined by ASTM D-1557.

2.08 STREAM CROSSING:

A. After construction is complete the CONTRACTOR will be responsible for restoring the stream crossing to a condition equal to or better than existed prior to construction.

B. Contractor shall submit plan for stream crossing to be approved by Passamaquoddy

Environmental Department and the COR.

2.09 EXCAVATING UNSUITABLE MATERIAL AND SELECTED BACKFILL:

02200 - 8

A. Where shown on the plans and/or approved by the COR, materials that are unsuitable to carry the pipe to be placed on it shall be excavated and replaced with materials

B. The backfill materials shall be deposited and spread in layers not to exceed 6 inches and each layer shall be thoroughly compacted by tamping.

C. Selected bedding material shall be added to extend upward to a depth of 6 inches over the top of the pipe.

D. Any unauthorized excess excavation below the levels indicated on the drawings shall be backfilled at the expense of the CONTRACTOR.

2.10 TOP SOIL:

A. Existing topsoil shall be removed and stockpiled separately prior to the start of trenching or excavation on the site.

B. After completion of construction the topsoil shall be placed on project areas requiring topsoil for use as a base for final sodding or seeding.

C. If established sod areas are disturbed by excavation or construction, re-seeding shall be required.

2.11 FINISH GRADING:

A. After the piping and structures have been constructed and installed, all piping installed and all backfilling and embankments have been completed, areas on the site of the work shall be brought up to the true grades.

B. All slopes shall be trimmed and dressed, and all surfaces graded so that effective drainage is secured.

C. All streets, alleys, driveways, sidewalks, curbs, or other surfaces which have been disturbed or damaged shall be resurfaced with like materials to a condition equal to or better than the original condition.

2.12 DISPOSAL OF EXCESS MATERIALS:

A. All excess excavated material shall be disposed of by the CONTRACTOR in areas designated for that purpose.

2.13 MOVING FENCES AND MINOR STRUCTURES:

A. The CONTRACTOR shall make all temporary openings in fences and make the necessary repairs to reinstall the existing fences to their original locations and conditions or replace with an equal or better fence.

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B. Culverts, drainage pipes or other minor structures that may have to be moved temporarily from the alignment of the work shall be removed, cared for, and reset by the CONTRACTOR in a satisfactory manner, irrespective of the condition of the structure as long as the structure is functional in it's original state.

C. It shall be the CONTRACTOR's responsibility to visit the project site and determine actual conditions with regard to the existence of old car bodies, abandoned houses, fences, driveways, trees, stumps & brush, sidewalks, approaches, trailer concrete slabs, and other miscellaneous, obvious, obstacles to construction.

D. No separate payment will be made for the removal or replacement of these items.

They shall be considered as part of the CONTRACTOR's obligation and no additional payment shall be made.

2.14 LEDGE EXCAVATION: (Not Anticipated)

A. Ledge excavation is not probable. If ledge is encountered the price for its removal will be negotiated on a change order.

B. The following paragraphs define solid rock and loose rock excavation and the method of measurement in cubic yards upon which payment will be based.

1. No differentiation in payment will be made between solid or loose excavation.

2. Solid rock shall be defined as large masses of igneous, metamorphic, or sedimentary rock that cannot be excavated without drilling, blasting, or the use of rippers or other specialized equipment.

3. Any material excavated with out the use of blasting or specialized ripping equipment shall not be considered ledge.

4. Solid rock excavation shall be measured in cubic yards from the top of the rock to a point 6 inches below the invert of the pipe and 12 inches from each side of the pipe or appurtenance with a maximum of 28 inches trench width being allowed.

5. For any structure, measurement shall be calculated 2 feet from the edge of the structure.

6. The measurements shall be within the nearest 1inch of a foot from the surface and no less than every 10 lineal feet by one of the following methods:

a. Excavating and exposing the ledge profile for measurement. This shall be the responsibility of the CONTRACTOR and no additional payment shall be made for this excavation.

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b. Ledge profile determined by drilling without excavating and measurements taken prior to any blasting.

c. Ledge profile measured after blasting and excavation. A 20% deduction shall be made in ledge determination when this method is used to allow for expansion in ledge due to blasting.

C. Trench where rock excavation is encountered extending below the bottom of the pipe, shall be excavated at least 6 inches deeper than the pipe invert and refilled to the required elevation with sand or crushed stone as per 02228 Borrow and Bedding Material. Bedding material shall be added as per 02228 Borrow and Bedding.

[Payment for this fill material shall be considered incidental to the rock excavation and no additional payment shall be made.]

D. Loose rock shall be defined as boulders and other detached stones each having a volume of two cubic yards or more.

1. Loose rock shall not be used for backfill.

2. Loose rock excavation shall be measured in cubic yards, including the total volume of only those rocks or boulders that are individually over two cubic yards in volume.

3. Loose rock shall be removed from the excavation in such a way that a clear width of at least 12 inches exists between the rock and the pipe or appurtenance.

E. Where blasting is required a pre-blast survey will be performed.

1. The blasts shall be covered with suitable weighted plank coverings or mattresses to confine all materials lifted by blasting.

2. No blasting shall be done within 40 feet of the finished pipelines.

3. The open end of the finished lines shall be closed and covered with earth to a depth of not less than 12 inches before each blast.

F. The CONTRACTOR shall comply with all laws, ordinances, applicable safety codes requirements and regulations relative to the handling, storage and use of explosives and the protection of life and property.

1. He shall secure all necessary permits and shall be responsible for all damage caused by his blasting operations.

2. All rock that cannot be handled and compacted, as earth shall be kept separate from other excavated materials and shall not be mixed with other backfill materials except as approved by the COR.

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3. The CONTRACTOR shall dispose of all rock excavated in a suitable location

4. The CONTRACTOR shall erect suitable barricades and/or warning signs on all public thoroughfares leading to the site of blasting operations and shall give adequate audible warning before each discharge.

5. He shall be responsible for the protection of persons and property and liable for any injury or damage to same, caused by reason of his blasting operation.

2.15 FROST PROTECTION

A. Place insulation over any pipe installed for the conveyance of water or wastewater where the depth of pipe burial is less than 5 feet or where the pipe crosses a road, driveway, sidewalk, or traveled path. Minimum depth of bury is 4 feet.

1. For water or sewer main the insulation shall be the entire width of the trench and centered over the main.

2. For water service line, or a sewer force main 2 inches in diameter or smaller, insulation shall be 2 feet wide and centered over the pipe.

B. Place insulation so there is no more that 6 inches of cover between the top of the pipe and the insulation. Overlap insulation by at least 6 inches or place insulation in at least 2 staggered layers.

C. Place insulation over the entire width of the crossing and extend a minimum of 5 feet on each side of the crossing. Insure a straight alignment of polystyrene at all times.

1. If two or more layers are used, place each layer to cover the joints of the preceding layer. Use an appropriate adhesive to fasten each layer to the layer immediately below.

2. Construction equipment shall not operate on the insulation until after the first lift of backfill material has been placed and compacted.

3. The first lift of backfill materials placed shall be a minimum of 8 inches deep, end dumped, and spread over the insulation so as not to damage it.

2.16 LOAMING AND SEEDING

A. The finished grades shall be loamed and seeded as indicated on the plans.

B. The CONTRACTOR shall provide topsoil, fertilizer, and lime as necessary to support a thick, even growth of grass.

C. Grass seed shall be furnished in sealed standard packaging from the seed supplier.

D. Application methods shall conform to the State of Virginia requirements.

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E. Grass seed mixture: 48 percent Creeping Red Fescue, 4 percent Redtop, 48 percent

Tall fescue

F. Seed shall be applied according to the following schedule:

Creeping Red Fescue 20 lb/ acre Redtop 2-lb/ acre Tall Fescue 20 lb/ acre

2.17 CONSTRUCTION STAKING

A. Location, alignment, and elevation stakes provided by the OWNER shall be limited to the horizontal location of pipeline bends, vertical control within 100 feet of water storage tanks or pumphouse structures, and elevation control within 100 feet of the route for other facilities requiring vertical control.

B. The CONTRACTOR shall be responsible for offsets, and other additional horizontal or vertical control that the CONTRACTOR needs to complete the work in conformance with the drawings and specifications.

C. The CONTRACTOR shall be responsible for the preservation of OWNER-furnished control stakes, and if disturbed the CONTRACTOR shall pay for the actual cost of replacement. [The CONTRACTOR shall advise the OWNER at least 48 hours in advance of when and where staking will be required.]

02228 - 1

SECTION 02228

BORROW AND BEDDING MATERIAL

PART 1 - GENERAL

1.01 DEFINITIONS

A. When the native soil in the trench is not rock, rocky, or otherwise unsuitable, it may be used for pipe embedment.

B. Unsuitable material is defined as solid or loose rock per these specifications, soils with rocks larger than 1 1/2 inches in the largest dimension, or otherwise unsuitable soils that are incapable of properly supporting the pipe.

C. If the native soil is unsuitable, the CONTRACTOR shall import a suitable pipe embedment material.

1. The inclusion of a bid item and estimated quantity for imported pipe embedment in the

Bid Schedule indicates that importing pipe embedment is probable.

2. However, the exclusion of this item from the Bid Schedule does not preclude the possibility that importing pipe embedment will be required, merely that it is not anticipated.

3. If unanticipated imported pipe embedment is required, unit prices shall be negotiated between the CONTRACTOR and the CONTRACTING OFFICER.

1.1 DESCRIPTION

A. Work Included:

1. Provide, place, and compact borrow and bedding material in authorized excavations(s) below normal depth and in other location(s) as shown on the Drawings and/or as specified herein.

B. Related Work Specified Elsewhere;

1. Trench Excavation - Earth, Trench Excavation - Ledge, Trench Backfilling, Compaction, Control and Testing are specified in the appropriate Sections

1.2 Submittals

A. Independent Testing Laboratory

B. Test Reports

PART 2 - PRODUCTS

2.1 MATERIALS

A. Gravel Borrow:

1. Uniformly graded granular material having no rocks with a maximum dimension over 6-inches, except where it is used for pipe bedding in which case the maximum size shall be 1 1/2-inches.

02228 - 2

2. Free from frozen material and other unsuitable material.

3. That portion passing a three-inch square mesh sieve shall contain not more that 70 percent passing a 1/4-inch mesh sieve and not more that 10 percent passing a number 200 mesh sieve.

B. Screened Gravel (Bedding Material):

1. Shall be either screened gravel or crushed stone and shall be well graded in size from 1/4 inch to 3/4 inch.

2. Clean, hard, and durable particles or fragments.

3. Free from dirt, vegetable, or other objectionable matter, and excess of soft, thin elongated, laminated or disintegrated piece.

4. Sieve Analysis:

Sieve Designation

% Passing by Weight Square Opening

1" 100 3/4" 90 - 100 3/8" 20 - 50

No. 4 0 - 10 No. 8 0 - 5

C. Sand:

1. Clean, hard, and durable particles or fragments.

2. Sieve Analysis:

% Passing by Weight Square Opening

3/8" 100 No. 4 95 - 100 No. 16 50 - 85 No. 50 10 - 30 No. 100 2 - 10 No. 200 0 - 5

D. 3/4" Crushed Stone: 3/4" Crushed Stone shall be a uniform material containing angular pieces, as are those which come from a mechanical crusher. Gradation requirements shall be as follows:

% Passing by Weight

Square Opening 1" 98 -100

3/4" 0 - 30 No. 200 0 - 3

E. Unsuitable Soil Materials: Shall be those defined in AASHTO M145, soil classification

Groups A-2-6, A-2-7, A-4, A-5, A-6, and A-7; also, peat and other highly organic soils.

02228 - 3

PART 3 - EXECUTION

3.01 Pipe Embedment Definition:

A. Pipe embedment is defined as that material required to bring the trench bottom up to grade and that material placed alongside and above pipe to a level of at least 6 inches over the top of the pipe. The pipe embedment area is divided into three zones as defined below:

1. Bedding: Bedding is that portion of pipe embedment zone beneath the pipe. If the native soil is suitable for bedding the pipe without over- excavation, the bottom of the trench shall be accurately shaped such that one fourth of the pipe circumference is provided with uniform bearing and support for each section of the entire length of the pipe. Imported bedding material shall likewise be placed to provide uniform and adequate longitudinal support under the pipe. Bedding material shall be placed and compacted in lifts not to exceed 6 inches in loose measure.

2. Haunching: Haunching is that portion of the pipe embedment zone from the bottom of the pipe to the springline of pipe. Haunching material shall be placed and consolidated to provide adequate side support to the pipe while avoiding both vertical and lateral displacement of the pipe from proper alignment.

3. Initial Backfill: Initial backfill is that portion of the pipe embedment zone from the springline of the pipe to a minimum level of 6 inches over the top of the pipe. Initial backfill material shall be placed and compacted in lifts not to exceed 6 inches in loose measure. Compaction shall be performed in a manner to avoid damage and disturbance of the embedded pipe.

3.1 INSTALLATION

A. Place bedding material, initial backfill and fill below pipe bedding in layers of uniform thickness not greater than six inches or as shown on the Drawings.

B. Thoroughly compact each layer by means of a suitable vibrator or mechanical tamper.

C. In excavations below normal depth or where unsuitable materials are excavated, gravel borrow shall be used unless ground water makes such usage not practical; if such is the case, then screened gravel shall be used.

D. No stone 2" in diameter or larger shall be allowed within 12" of the pipe.

E. Where soft silt and slay soils are encountered the trench shall be excavated 6-inches below the normal bedding and backfilled with 6-inches of compacted sand.

F. No stone or rock greater than 12 inches measured at any point shall be placed in the trench backfill.

G. The following schedule gives the minimum bedding requirements for various types of pipe.

Dimensions refer to distance below bottom of pipe.

D.I. Pipe 6 inches minimum gravel borrow.

PVC or P.E. Pipe 6 inches minimum screened gravel.

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H. The following schedule gives the minimum backfill requirements for various types of pipes.

D.I. Pipe Gravel borrow 6 inches minimum PVC or P.E. Pipe 6 inches minimum screened gravel over the top of the pipe.

I. Unless specified in the plans or as approved by the COR, all fill material shall be compacted to within 95 percent of the maximum Modified Standard Proctor Value.

J. Fill shall be placed in lifts no greater than 6 inches. In particular this shall apply to fill placed beneath the well house building.

K. Trench where rock excavation is encountered extending below the bottom of the pipe, shall be excavated at least 6 inches deeper than the pipe invert and refilled to the required elevation with sand or crushed stone. [Payment for this fill material shall be considered incidental to the rock excavation and no additional payment shall be made.]

02270 - 1

SECTION 02270

TEMPORARY EROSION CONTROL

1.1 DESCRIPTION

A. Work Included:

1. The work under this section shall include provisions of all labor, equipment, materials, and maintenance of temporary erosion control devices as specified herein, as shown on the Drawings, and as approved by the COR.

2. Erosion control measures shall be provided as necessary to correct conditions that develop prior to the completion of permanent erosion control devices or as required to control erosion that occurs during normal construction operations.

3. Construction operations shall comply with all Federal, State, local, and

Tribal regulations pertaining to erosion control.

4. After awarded the Contract, prior to commencement of construction activities, meet with the COR to discuss erosion control requirements and develop a mutual understanding relative to details of erosion control.

B. Related Work Specified Elsewhere:

1. Site work is specified in appropriate sections of this Division.

C. Design Criteria:

1. Conduct all construction in a manner and sequence that causes the least practical disturbance of the physical environment.

2. Stabilize disturbed earth surfaces in the shortest time and employ such temporary erosion control devices as may be necessary until such time as adequate soil stabilization has been achieved.

3. After construction is complete the CONTRACTOR will be responsible for restoring the work- site to a condition equal to or better than existed prior to construction.

1.2 SUBMITTALS

02270 - 2

A. The CONTRACTOR shall furnish the COR, in writing, his work plan giving proposed locations for storage of topsoil and excavated material before beginning construction. A schedule of work shall accompany the work plan. Acceptance of this plan will not relieve the CONTRACTOR of the responsibility of completion of the work as specified.

PART 2 - PRODUCTS

2.1 MATERIALS

A. Baled Hay:

1. At least 14" by 18" by 30" securely tie to form a firm bale, staked as necessary to hold the bale in place.

B. Sand Bags:

1. Heavy cloth bags of approximately one cubic foot capacity filled with sand or gravel.

C. Mulches:

1. Asphalt emulsion, compost, corn stalks, gravel, crushed stone, loose hay, straw, peat moss, pine needles, rotten sawdust, wood chips, wood excelsior, or wood fiber cellulose.

2. Type and use shall be as specified by the state requirements.

D. Mats and Nettings:

1. Twisted Kraft paper, yarn, jute, excelsior, and wood fiber mats.

2. Type and use shall be a s specified by the Environmental Quality Handbook.

E. Seed:

1. Conservation mix appropriate to the predominant soil conditions as specified in the Environmental Quality Handbook and subject to approval by the COR.

F. Sod:

1. Grown from certified seed of adapted varieties to produce high quality sod free of any serious thatch, weeds, insects, diseases, and other pest problems.

02270 - 3

2. At least one year old and not older that three years. Cut with a ½ to 1 inch layer of soil.

G. Water:

1. The CONTRACTOR shall provide water and equipment to control dust, as directed by the COR.

H. Filter Fabrics:

1. Filter fabric shall be of one of the commercially available brands such as Mirafi, Typar, or equivalent. Fabric types for particular applications shall be approved by the COR prior to installation.

2.2 CONSTRUCTION REQUIREMENTS

A. Temporary Erosion Checks:

1. Temporary erosion checks shall be constructed in ditches and other locations as necessary and as shown on drawings.

2. Bales hay, sand bags, or siltation fence may be used in an arrangement to fit local conditions.

B. Temporary Berms:

1. Temporary barriers shall be constructed along the toe of embankments when necessary to prevent erosion and sedimentation.

C. Sedimentation Basin:

1. Sedimentation basins shall be areas where water is temporarily delayed or slowed down, constructed where shown on the plans or as approved by the

2. Capacity shall be equal to the volume of sediment expected to be trapped at the basin during the planned useful life of the structure, or if the periodic removal of debris is practical, the capacity may be proportionately reduced.

3. Design shall be in accordance with the Standards for Ponds, Grade

Stabilization Structure, or USDA Soil Conservation Service Engineering Memorandum No. 27 and/or as shown on the Drawings.

D. Siltation fences shall consist of porous filter fabric with a wire mesh backing and shall be supported by posts as per manufacturer’s recommendations. Fabric type shall be approved by the COR for its filtration properties.

02270 - 4

3.1 INSTALLATION

A. Temporary Erosion Checks:

1. Temporary erosion checks shall be constructed in ditches and at other locations as needed and as approved by the COR. The CONTRACTOR’s arrangement of bales and bags may need to be modified, as approved by the COR, to fit local conditions.

2. Baled hay, or sandbags, or both, may be used in other areas as necessary to inhibit soil erosion.

3. Siltation fence, if called for in the plans, shall be located and installed as needed.

B. Removing and Disposing:

1. When no longer needed, material and devices for temporary erosion control shall be removed or may be left in place and dispersed over the adjacent area, as approved by the COR.

2. When removed, such devices may be re-used in other locations provided they are in good condition and suitable to perform the erosion control for which they are intended.

3. When dispersed over adjacent areas, the material shall be scattered to the extent that it causes no unsightly conditions nor creates future maintenance problems.

4. Sedimentation basins, if no long required, will be filled in, the pipe removed, the surface loamed, and grass cover shall be established.

02500 - 1

SECTION 02500

WELL DRILLING

The work covered by this section includes the furnishing of all plant, labor, transportation, tools, equipment, power, and materials, and performing all operations in connection with the drilling of a test well including formation analyses, test pumping, and water quality testing of the identified wells.

1.01 WELL LOCATION

A. The location of the well shall be as shown on the drawings provided or as staked in the field by the Contract Officer's Representative (COR). The Contractor will not change the designated location of the well without prior approval of the COR.

1.02 WELL CONSTRUCTION

A. Except as herein provided, all work and material will conform to the recommendations of the American Water Works Association (AWWA) as set forth in the standard of the latest edition of AWWA Publication A-100-90, "AWWA Standard for Water Wells".

B. All construction methods and materials for the well will meet or exceed State of Virginia

Private Well Regulations.

C. The Contractor will be licensed as a certified well driller in the State of Virginia.

1.01 WORK INCLUDED

A. Record Keeping B. Drilling C.