sow_hofu_potable_water_system_05_2016.pdf

Table of Contents

Bid Schedule

Section 01700 - Definition of Contract Line Items

Section 02100 - Clearing and Grubbing

Section 02210 - Site Excavation

Section 02221 - Trenching, Backfilling and Compaction

Section 02270 - SESC

Section 02485 - Finish Grading and Seeding

Section 02615 - Water Mains

Section 02640 - Valves and Fire Hydrants

Section 02642 - Water Service Connections

Section 02653 - Testing and Disinfecting Water Mains

Section 03000 - Plain and Reinforced Cement Concrete

Section 03050 - Cement Concrete for Utility Construction

Section 03480 - Concrete Valve Vault

Section 16060 - Grounding and Bonding

Section 16075 - Electrical Identification

Section 16120 - Conductors and Cables

BID SCHEDULE

Hopewell Furnace National Historical Site – Construction Documents for Potable Water Improvements

NPS Contract # INP10PC60951

Work Order # P14PD02561

CSD Project # 4572.7.05.00

NOTE: Words have been abbreviated as follows:

Word Abbreviation

Lump Sum L.S.

Bid Item Estimated Unit of Unit Estimated No. Bid Item Description Quantity Payment Price Total

1. Task 2. Concrete valve and metering pit at the Pump House

1 Job L.S. $____________

2. Task 3. Abandon the existing fire hydrants -"A", "B", "C", "D", "E", 5, 6, & 9

1 Job L.S. $ ___________

3. Task 4. Replace water service to Building 98 and 99 and Mark Bird Lane camp pad

1 Job L.S. $ ___________

4. Task 5. Replace water service to Maintenance Building include curb stops

1 Job L.S. $ ___________

5. Task 6. Replace 2-1/2" galvanized steel water line to Village Barn

Bid Item Estimated Unit of Unit Estimated No. Bid Item Description Quantity Payment Price Total

6. Task 7. Replace fire hydrant #7 (near charcoal burn site) with new service line and frost free yard hydrant 1 Job L.S. $ ___________

7. Task 8. Provide frost free yard hydrant at the Blacksmith Shop

1 Job L.S. $ ___________

8. Task 9. Provide frost free setup valve to hand pump at Boarding House

1 Job L.S. $ ___________

9. Task 11. Install solenoid actuated valve in existing valve vault and air release/ vacuum valve in new precast valve pit at Reservoir Site.

1 Job L.S. $ ___________

10. Task 12. Install meters at selected buildings

1 Job L.S. $ ___________

11. Task 13. Replace distribution line valves

1 Job L.S. $ ___________

12. Task 14. Provide curb stop/valve at main for existing services (Visitor's Center)

TOTAL AMOUNT OF BID: $ ________________________

TOTAL AMOUNT OF BID: $ _____________

(Use Words)

01700-1

SECTION 01700

DEFINITION OF CONTRACT LINE ITEMS

PART 1 GENERAL

1.01 DESCRIPTION

A. The intent of this section is to provide a general description of the Bid Items contained in the Bid Schedule, including a verbal description of the required work and how the work will be paid.

B. It is the intent of these contract documents to provide Specifications and Plans to complete the identified Tasks in their entirety and the Contractor’s Lump Sum bid for each task should reflect a complete task. All bid items are to individually include Mobilization; Clearing and Grubbing;

Excavation and Backfill; Top Soiling, Finished Grading, Seed and Mulching; necessary Soil Erosion and Sedimentation Control Measures; and Surface Restoration “in kind”.

C. Sheet numbers identified below reference the Contract Drawings for Hopewell Furnace National

Historic Site – Potable Water Improvements.

PART 2 MATERIALS (not used)

PART 3 EXECUTION

3.01 LIST OF CONTRACT BID ITEMS

A. Bid Item No. 1 - Task 2. Concrete valve and metering pit at the Pump House including new shut off valves

1. General layout and details are shown on Sheet 4. Access hatch details are shown on Sheet 11.

This item shall include all equipment, labor and materials necessary to install a 9’ x 13’ (inside dimensions) reinforced concrete valve and metering pit, with specified piping, valves, meters, remote readouts and fittings, essentially as shown on the plans. Bid item shall include the connection of the pit to the existing 6” diameter cast iron water main on the west side of the Pump House; connection to the existing 4” diameter cast iron water main which runs south from the Pump House toward Mark Bird Lane; connection to the proposed 3” HDPE water main which will serve Building 99 and the Maintenance Building; and relocation of the existing yard hydrant, currently located on the west side of the Pump House. Bid Item shall also include a cast iron floor drain and necessary discharge piping.

2. Payment will be made at the contract lump sum price, complete in place.

B. Bid Item No. 2 - Task 3. Abandon the existing fire hydrants -"A", "B", "C", "D", "E", 5, 6, & 9

1. Locations of the Fire Hydrants and Yard Hydrant that are identified to be removed are shown on Sheet 2. Bid Item shall include all equipment, labor and materials necessary to remove and, properly dispose of the existing fire hydrants, yard hydrant and service lines to a point 24” below the ground surface; backfilling and surface restoration, in kind. The actual Fire Hydrant for “A”, “B”, “C”, “D” and “E” are still in place. Fire Hydrants 5, 6 and 9 have been previously removed, but the service lines are still in place. The service to Fire Hydrants “A” and “D” and the Yard Hydrant, located in the yard area southeast of Building 98, shall be

01700-2 disconnected at the water main utilizing one of the methods detailed on Sheet 11. The service connection shall be cut, capped and blocked or removed and a repair sleeve installed.

2. Payment will be made at the contract lump sum price, complete.

C. Bid Item No. 3 - Task 4. Replace water service to Building 98 and 99 and Mark Bird Lane camp pad

1. General layout is shown on Sheet 5 and details are shown on Sheet 10. Bid Item shall include all equipment, labor and materials necessary to install new 1” HDPE water services to Buildings 98 & 99 and the Mark Bird Lane camping pad. Building 98 and the Mark Bird camping pad will be served from the existing 4” cast iron water main located east of the camping pad and west of Building 98. Building 99 will be served from the new 3” HPDE main, to be located north of the building. All new services shall include a 1” corporation at the main and a new 1” curb stop and box located 24” from the main. The service to Building 99 can be connected to the existing 1” copper service north of the existing deck. The service to Building 98 shall be run under the building and connected to the building plumbing system above the existing floor. Proper ground cover shall be maintained to prevent freezing. Any exposed piping shall be properly insulated. The new service to Mark Bird Lane camping pad shall terminate with a frost free Yard Hydrant. The existing service connection for the Mark Bird Lane camping pad shall be removed from the water main and a repair clamp installed.

2. Payment will be made at the contract lump sum price, complete in place.

D. Bid Item No. 4 - Task 5. Replace water service to Maintenance Building include curb stops

1. General layout is shown on Sheet 5 and details are shown on Sheet 10. Bid Item shall include all equipment, labor and materials necessary to install a new 3” HDPE water main from the new concrete valve and metering pit, located at the Pump House to a new blow off, to be located in the yard area west of the Maintenance Building, and a new 1” HDPE water service to the Maintenance Building. A new “tee” and gates valves shall be installed at the direction change, north of the Maintenance Building. Bid item shall include a new frost free Yard Hydrant and gate valve located in the yard area west of the Maintenance Building. The new 1” HDPE service shall include a new 1” corporation at the main; a 1” curb stop and box and connection to the existing building plumbing system above the existing concrete floor.

E. Bid Item No. 5 - Task 6. Replace 2-1/2" galvanized steel water line to Village Barn

1. General layout is shown on Sheet 6 and details are shown on Sheets 10 & 11. Bid Item shall include all equipment, labor and materials necessary to remove a section of existing 4” cast iron main; install a new 4”x4” ductile iron “tee” at the location of the existing Village Barn service connection to the existing water main; a 4”x2” reducer, a 2” curb stop and box (traffic rated); the new 2” HDPE water service; new Schedule 80 PVC connection to the existing plumbing system inside the Village Barn; 2 new ball valves and the meter/ double check valve setup in the Village Barn. Bid item shall also include removal of the existing service line.

F. Bid Item No. 6 - Task 7. Replace fire hydrant #7 (near charcoal burn site) with new service line and frost free yard hydrant

1. General layout is shown on Sheet 6 and details are shown on Sheet 10. Bid Item shall include all equipment, labor and materials necessary to remove a section of existing 4” cast iron main;

install a new 4”x4” ductile iron “tee” at the location of the existing Fire Hydrant # 7 service

01700-3 connection to the existing water main; a 4”x2” reducer, a 2” curb stop and box (traffic rated);

the new 2” HDPE water service and a new frost free Yard Hydrant. Bid item shall also include removal of the existing service line.

G. Bid Item No. 7 - Task 8. Provide frost free yard hydrant at the Blacksmith Shop

1. General layout is shown on Sheet 6 and details are shown on Sheet 10. Bid Item shall include all equipment, labor and materials necessary to install a 1” corporation at the existing 4” cast iron water main; a new 1” curb stop and box (traffic rated) located 24” from the main; the 1” HDPE service and a frost free Yard Hydrant.

H. Bid Item No. 8 - Task 9. Provide frost free setup valve to hand pump at Boarding House

1. General layout and details are shown on Sheet 3. Bid Item shall include all equipment, labor and materials necessary to install a 1” HDPE service line from the existing 1” HDPE service line, to Tenant House # 3, to the hand pump at the Boarding House; a frost free Yard Hydrant on the stone well and a wooden shell to cover the Yard Hydrant. Wooden shell covering the Yard Hydrant shall be similar in detail to the existing wooden shell on the stone well. Wood shall be primed and painted to match the existing wooden shell.

I. Bid Item No. 9 - Task 11. Install solenoid actuated valve in the existing concrete vault at the

Reservoir Site and an air release/ vacuum valve in a new precast concrete valve pit at the Reservoir Site.

1. General layout and details are shown on Sheet 7. Electrical details are shown on Sheet 13.

Bid Item shall include all equipment, labor and materials necessary to install a 3” solenoid actuated valve on the 3” ductile line in the existing concrete vault located on the Reservoir Site, including electrical components, conduit and wiring. This item will also include the installation of an air release/ vacuum valve, in a precast concrete valve pit, on the existing 6” cast iron main location at the Reservoir Site.

J. Bid Item No. 10 - Task 12. Install meters at selected buildings

1. Meter pit locations are shown on Sheets 5 & 6. Meter pit details are shown on Sheet 9. Bid

Item shall include all equipment, labor and materials necessary to install meter pit, meter and dual check valve on the new service lines for Buildings 98 & 99, the Mark Bird Lane camping pad and the Maintenance Building. Bid Item shall also include installation of a new meter pit, meter, and dual check valve on the existing service line to the Visitors Center.

K. Bid Item No. 11 - Task 13. Replace distribution line valves

1. General layout is shown on Sheet 6 and details are shown on Sheet 10. Bid Item shall include all equipment, labor and materials necessary to install a new 4” ductile iron gate valve and valve box (traffic rated) at the location of the existing service connection for Fire Hydrant “E”, located south of the Visitors Center, and a new 4” ductile iron gate valve and blowoff at the end of the 4” cast iron main in the Village Area near French Creek.

01700-4

L. Bid Item No. 12 - Task 14. Provide curb stop/valve at main for existing services (Visitor's Center)

1. General layout is shown on Sheet 6. Curb stop details are shown on Sheet 10. Bid Item shall include all equipment, labor and materials necessary to install indicated curb stop and box.

Existing service is assumed to be 1” copper. Actual service size and material shall be verified by the contractor prior to ordering materials.

END OF SECTION

02100-1

SECTION 02100

CLEARING AND GRUBBING

A. The work of this section includes, but is not limited to:

1. Clearing

2. Grubbing

3. Stripping and stockpiling topsoil

4. Debris disposal

B. Related Work Specified Elsewhere:

1. Site excavation and placement of fill material: Section 02210

2. Trenching, backfilling and compacting: Section 02221

3. Soil erosion and sedimentation control: Section 02270

4. Finish grading, seeding, and sodding: Section 02485

C. Definitions:

1. Clearing is defined as the removal of trees, brush, down timber, rotten wood, rubbish, any above original ground elevation not designated to be saved. Clearing also includes removal of fences, walls, guard posts, guiderail, signs, and other obstructions interfering with the proposed work.

2. Grubbing is defined as the removal from below the surface of the natural ground of stumps, roots and stubs, brush, organic materials and debris.

D. Applicable Standard Details: NONE

1.02 QUALITY ASSURANCE - Section not utilized

1.03 JOB CONDITIONS

A. The CONTRACTOR may clear only obstructions within the construction limits or permanent and construction rights-of-way specifically designated to be removed for work as shown on the Contract Drawings or Specifications.

PART 2 PRODUCTS

2.01 MATERIALS

A. Temporary Fencing:

1. Undamaged picket snow fence, 4' high, formed of wooden slats, tightly woven with wire cable or lightweight orange polyethylene barricade fence with 1”-2” by 3”- 4” openings.

2. Soil-set fence posts, studded "T" type, 6' high.

02100-2

B. Tree Wound Dressing:

1. Antiseptic and waterproof, asphalt base.

3.01 PREPARATION

A. Notify the COTR and regulatory agencies at least 72 hours prior to beginning any clearing work.

B. Protect benchmarks, utilities, existing trees, shrubs, and other landscape features designated for preservation with temporary fencing or barricades satisfactory to the COTR. No material shall be stored or construction operation carried on within 4-feet of any tree to be saved or within the tree protection fence.

C. When a private enclosure fence encroaches on the work area, notify the property OWNER at least 5 days in advance of the clearing/grubbing operations to permit the OWNER to remove it, construct a supplemental fence, or make such other arrangements as may be necessary for security purposes. Upon failure of the property, OWNER to reasonably proceed with the work required to secure his property, carefully remove the fence, in whole, or in part and neatly pile the materials onto the OWNER's property.

3.02 UTILITY RELOCATIONS

A. Inform all companies, individuals and others owning or controlling facilities or structures within the limits of the work which have to be relocated, adjusted or reconstructed in sufficient time for the utility to organize and perform such work in conjunction with or in advance of the CONTRACTOR's operations.

B. Comply with the requirements of Pennsylvania Underground Utility Protection Law.

3.03 CLEARING

A. Confine clearing to within the construction limits.

B. Clear in a manner that will avoid damage to trees, shrubs, structures, and other installations, which are to be retained.

C. Where stumps are not required to be grubbed, flushcut with ground elevation.

3.04 GRUBBING

A. Grub areas within the construction limits to remove roots and other objectionable material to a minimum depth of 24".

B. Remove all stumps within the cleared areas.

3.05 STRIPPING AND STOCKPILING TOPSOIL

A. Strip topsoil to whatever depth it may occur from areas to be excavated, filled, or graded and stockpile.

02100-3

B. The topsoil is the property of the OWNER and shall not be used as backfill or removed from the site.

3.06 DEBRIS DISPOSAL

A. Trees, logs, branches, brush, stumps, and other debris resulting from clearing and grubbing operations shall become the property of the CONTRACTOR and shall be legally disposed of.

B. Do not deposit or bury on the site debris resulting from the clearing and grubbing work unless authorized in writing by the OWNER.

C. Debris may be burned on-site if required permits are obtained, and if burning operations are conducted in compliance with all regulations.

D. Discarded materials within the right-of-way limits necessary to perform the work shall be removed and properly disposed of at the CONTRACTOR’s expense.

3.07 RESTORATION

A. Repair all injuries to bark, trunk, limbs, and roots or remaining plants by properly dressing, cutting, and painting, using approved arboricultural practices, and materials.

B. Replace trees, shrubs, and plants designated to be saved which are permanently injured or die during the life of the Contract and warranty period as a result of construction operations with like species acceptable to the OWNER.

C. Remove protective fences, enclosures, and guards upon the completion of the project.

D. Restore guard posts, guiderail, signs, and other interferences to the condition equal to that existing before construction operations.

E. Fences, mailboxes, and signs within the line of work shall be carefully removed, stored, and upon completion of backfill, reset or replaced to their original condition and location, at the CONTRACTOR’s expense.

02210-1

SECTION 02210

SITE EXCAVATION AND PLACEMENT OF FILL MATERIAL

1. Excavation

2. Blasting

3. Placement and compaction of fill material

B. Related work specified elsewhere:

1. Clearing and grubbing: Section 02100

3. Soil erosion and sedimentation control: Section 02270

4. Finish grading, seeding, and sodding: Section 02485

C. Definitions: NONE

1.02 QUALITY ASSURANCE

A. Reference Standards:

1. Pennsylvania Department of Transportation (PennDOT), latest revision:

Publication 408, Specifications Publication 213, Temporary Traffic Control Guidelines Publication 19, Field Test Manual

• PTM No. 106 Moisture-Density Relations of Soils (using 5.5 lb

Rammer and 12 inch drop

• PTM No. 402 Determine In-Place Density and Moisture Content of

Construction Materials by Use of Nuclear Gauges

2. American Society for Testing and Materials (ASTM):

D698 Test Method of Laboratory Compaction Characteristics of Soil Using Standard Effort (12,400 ft.-lbf./ft3)

D1557 Test Method for Laboratory Compaction Characteristics of Soil Using Modified Effort (56,000 ft.-lbf./ft3)

D2922 Test Method for Density of Soil and Soil Aggregate in Place by Nuclear Methods (Shallow Depth)

02210-2

3. American Association of State Highway and Transportation Officials (AASHTO):

T89 Determining Liquid Limit of Soils T90 Determining Plastic Limit and Plasticity Index of Soils

4. Pennsylvania Code

Title 67, Transportation, Chapter 459, Occupancy of Highway by Utilities

B. Testing Agency:

1. Compaction testing shall be performed by a Soils Testing Laboratory engaged and paid for by the CONTRACTOR and approved by the COTR.

C. Compaction Testing:

1. Determine compaction by the testing procedure contained in ASTM D698 or ASTM

D1557 at the locations and frequencies specified in Section VIII - Technical Provisions (Detailed).

2. The minimum rates for in-place density tests should be as follows:

• 1 test for every 2,500 square feet of lift area and finished subgrade of part thereof

• 1 test per lift for every 25 lineal feet of trench backfill or part thereof

• 1 test at the bearing elevations for every 25 lineal feet of continuous footing that bears on structural fill.

1.03 SUBMITTALS

A. Certificates:

1. Submit certified compaction testing results from the Soils Testing Laboratory.

1.04 JOB CONDITIONS

A. Classification of Excavation:

1. All site excavation work performed under this contract is UNCLASSIFIED, and includes excavation and removal of all soil, shale, rock, boulders, fill, and all other materials encountered of whatever nature.

B. Control of Traffic:

1. Employ traffic control measures in accordance with Publication 213, "Temporary Traffic Control Guidelines".

C. Protection of Existing Utilities and Structures:

1. Take all precautions and utilize all facilities required to protect existing utilities and structures in compliance with Pennsylvania Act 187. Request cooperative steps of the Utility and suggestions for procedures to avoid damage to its lines.

02210-3

2. Allow free access to Utility personnel at all times for purposes of maintenance, repair and inspection.

2.01 ACCEPTABLE MATERIALS

For purposes of construction control, the following materials may be deemed acceptable for use in placement of fills:

A. Soil. Soil shall include all inorganic material having a maximum size that can be readily placed and compacted in loose 8 inch layers and of which more than 35 percent shall pass the No. 200 sieve. Soil shall have a minimum dry weight density of 98 pounds per cubic foot as determined in accordance with PTM No. 106, Method B and a maximum liquid limit of 65 as determined in accordance with AASHTO Designation T89. The plasticity index, as determined by AASHTO Designation T90 for soils having liquid limits of 41 to 65 inclusive, shall be not less than that determined by the formula: Plasticity Index = Liquid Limit - 30.

B. Granular Material. Granular material shall include all natural or synthetic mineral aggregates having a maximum size that can be readily placed and compacted in loose 8 inch layers and of which 35 percent or less shall pass the No. 200 sieve.

C. Shale. Shale shall include all rock-like materials formed by the natural consolidation of mud, clay, silt and fine sand and usually thinly laminated, comparatively soft and easily split, having a maximum size that can be readily placed and compacted in loose 8 inch layers.

D. Rock. Rock shall include all igneous, metamorphic and sedimentary rock having a maximum size that can be readily placed and compacted in loose 8 inch layers and which generally has sufficient fines to normally fill all the voids in each layer.

E. Random Materials. Random material shall include any combination of the above classifications and may include old concrete, brick, etc., from demolition having a maximum size that can be readily placed and compacted in loose 8 inch layers, and which has been approved by the ENGINEER.

F. Flowable Fill. As defined in Section 02221 and approved in advance by the COTR.

3.01 MAINTENANCE AND PROTECTION OF TRAFFIC

A. Coordinate the work to ensure the least inconvenience to traffic and maintain traffic on one or more unobstructed lanes unless closing of the roadway is authorized.

B. Maintain access to all streets and private drives and for emergency vehicles.

C. Provide and maintain signs, flashing warning lights, barricades, markers, and other protective devices as required to conform with construction operations and to keep traffic flowing with minimum restrictions.

D. Comply with State and local codes, permits and regulations.

02210-4

3.02 SALVAGE TOPSOIL

A. Within the areas indicated for grading, strip topsoil to the depth of suitable topsoil material and stockpile for subsequent top soiling operations. See Section 02100.

3.03 PLACEMENT OF FILL MATERIAL

A. After removal of topsoil, areas to receive fill shall be thoroughly rolled, and any soft spots disclosed by rolling shall be excavated and the unsuitable material removed and disposed of in a waste area. The excavated area shall be filled with suitable fill material approved by the COTR and recompacted. Suitable fill material shall be spread in layers of not more than 8 inches (loose) over the full area of the fill, and compacted to the required density by the use of compaction equipment. All fill material shall be compacted to not less than 95% of its maximum dry weight density at its optimum moisture content, plus or minus 2%, as determined by ASTM D698, under roadways, shoulders, driveways, curbs, sidewalks, gravel and sand parking areas and not less than 90% in yards, fields and sand areas.

When the material is too coarse to satisfactorily use these methods, compaction will be determined by the COTR based on non-movement of the material under the compaction equipment.

B. Fill material placed in areas inaccessible to the compaction equipment shall be placed in uniform loose layers not exceeding 4 inches in depth and compacted by means of approved mechanical tampers to the density requirements herein specified.

C. When a previously constructed fill requires additional material to bring it to required elevation, the top of the fill shall be thoroughly scarified before the required additional material is placed.

D. Material containing moisture in excess of that percentage which will ensure satisfactory compaction shall not be placed in the fill and fill material shall not be placed on material that has become unstable due to excessive moisture.

E. Frozen fill material shall not be placed in fills, and fill material shall not be placed on frozen material. If during construction the top of the fill freezes, all frozen material shall be removed before additional material is placed.

F. Wet or frozen materials which would be suitable when dried or when thawed and dried, may be wasted by the CONTRACTOR for his convenience only with the written permission of the Soil Testing Lab ENGINEER, and subject to replacement in equivalent volume, at the expense of the CONTRACTOR. However, in no case shall waste material be disposed of in the flood channel or floodway area of any stream.

G. Shale and random material containing an excessive quantity of large fragments shall be so placed that the coarser material is in areas where no building foundations or utility trenches are to be located. The large pieces shall then be broken down by the use of approved equipment until all voids are filled. Mixtures of shale and rock shall be placed in accordance with the requirements for placing shale.

H. Where fill is to be constructed on a slope, the slope shall be benched to the width and depth shown on the drawings or as approved by the Soil Testing Lab ENGINEER.

02210-5

3.04 EXCAVATION

A. Perform excavation of borrow material in a manner satisfactory to the COTR. Strip borrow pits of brush, trees, roots, grass and other vegetation prior to removal of material for use in fill. During the excavation operation, grade the borrow area to ensure free drainage of water from the area. Place and maintain erosion control devices after completion of the excavation, grade the excavated area, including side slopes, to drain and present a uniformly trim appearance merging into the surrounding terrain. After borrowing operations are complete, re-grade area, if necessary, to prevent erosion.

3.05 CONTROL OF EXCAVATED MATERIAL

A. Provide temporary barricades to prevent excavated material from encroaching on private property, walks, gutters, and storm drains.

B. Maintain accessibility to all fire hydrants, valve pit covers, valve boxes, curb boxes, fire and police call boxes, and other utility controls at all times. Keep gutters clear or provide other satisfactory facilities for street drainage. Do not obstruct natural watercourses. Where necessary, provide temporary channels to allow the flow of water either along or across the site of the work.

C. Comply with requirements of Section 02270- Soil Erosion and Sedimentation Control.

3.06 DEWATERING

A. Keep excavations dry and free of water. Dispose of precipitation and subsurface water clear of the work.

B. Intercept and divert surface drainage away from excavations. Design surface drainage systems so that they do not cause erosion on or off the site, or cause unwanted flow of water.

C. Comply with Federal and State requirements for dewatering to any watercourse, prevention of stream degradation, and erosion and sediment control.

3.07 TOPSOILING

A. Top soiling as specified in Section 02485, Finish Grading, Seeding and Sodding.

3.08 DISPOSAL OF EXCAVATED MATERIAL

A. Excavated material remaining after completion of placement of fills shall remain the property of the CONTRACTOR, removed from the construction area, and properly disposed of.

3.09 FOREIGN BORROW MATERIAL

A. Foreign borrow consists of excavation, placement and compaction in fill areas of approved material obtained from sources outside the project limits.

B. The CONTRACTOR shall make his own arrangements for obtaining all foreign borrow material and pay all costs involved.

02210-6

02221-1

SECTION 02221

TRENCHING, BACKFILLING AND COMPACTING

1. Cutting paved surfaces

2. Blasting

3. Trench excavation, backfill and compaction

4. Support of excavation

5. Pipe bedding requirements

6. Control of excavated material

7. Rough grading

8. Restoration of unpaved surfaces

2. Boring and jacking: Section 02150

3. Soil erosion and sedimentation control: Section 02270

4. Finish grading, seeding and sodding: Section 02485

5. Paving and resurfacing: Section 02575

Publication 213, Temporary Traffic Control Guidelines Publication 72M, Standards for Roadway Construction Publication 19, Field Test Manual

• PTM No. 106 - Moisture-Density Relations of Soils (using 5.5 lb. Rammer and 12 inch drop)

• PTM No. 402 - Determining In-Place Density and Moisture Content of

Construction Materials by Use of Nuclear Gauges

C33 Specifications for Concrete Aggregates D698 Test Method of Laboratory Compaction Characteristics of Soil Using

02221-2

Standard Effort D2922 Test for Density of Soil and Soil Aggregate in Place by Nuclear Methods

3. Pennsylvania Code

Title 67, Transportation, Chapter 459, Occupancy of Highways by Utilities

B. Testing Agency:

1. Compaction testing shall be performed by an approved Soils Testing Laboratory engaged and paid for by the CONTRACTOR and approved by the COTR.

C. Compaction Testing:

1. Conduct compaction tests as directed in Section VIII - Technical Provisions (Detailed) at locations as directed by the COTR during backfilling operations.

2. Determine compaction in state highways and shoulders by the testing procedure contained in PTM No. 106, Method B or PTM No. 402.

3. Determine compaction in areas other than state highways and shoulders by the testing procedure contained in ASTM D698 or ASTM D2922.

1. Submit certification from aggregate suppliers attesting that the pipe bedding and select material stone backfill materials conform to the specifications herein.

B. Compaction Equipment List:

1. Submit a list of all equipment to be utilized for compacting, including manufacturers' lift thickness limitations.

1.04 JOB CONDITIONS

A. Classification of Excavation:

1. All excavation work performed under this contract is UNCLASSIFIED, and includes excavation and removal of all soil, shale, rock, boulders, fill, and all other materials encountered of whatever nature.

B. Compaction of Backfill:

1. The degree of compaction required at each location is indicated in the Backfill and

Surface Restoration Requirements Table in Section 02575.

C. Control of Traffic:

1. Employ traffic control measures in accordance with Publication 213, "Temporary Traffic

Control Guidelines".

02221-3

D. Protection of Existing Utilities and Structures:

1. Take all precautions and utilize all facilities required to protect existing utilities and structures. Comply with the requirements of the Pennsylvania Underground Utility Protection Law. Request cooperative steps of the Utility and suggestions for procedures to avoid damage to its lines.

2. Advise each person in physical control of powered equipment or explosives used in excavation or demolition work of the type and location of utility lines at the job site, the utility assistance to expect, and procedures to follow to prevent damage.

3. Immediately report to the Utility and the COTR any break, leak or other damage to the lines or protective coatings made or discovered during the work and immediately alert the occupants of premises of any emergency created or discovered.

4. Allow free access to Utility personnel at all times for purposes of maintenance, repair and inspection.

E. Site Inspection:

1. Prior to entering upon any private property, the CONTRACTOR shall have arranged for and completed a site inspection of each property with the COTR, at which time the COTR will advise the CONTRACTOR as to what area is available for work; as to the trees, planting, and improvements which may be removed or disturbed during the work;

and as to any special condition or requirements which shall govern the work on each property.

2.01 PIPE BEDDING MATERIAL

A. Type III and Type IV Bedding Material:

1. AASHTO No. 8 coarse aggregate, Table C, Section 703.2, Publication 408 Specifications. Do not use slag or cinders.

B. Type V Bedding:

1. AASHTO No. 8 coarse aggregate conforming to Section 703, Publication 408. Do not use slag or cinders.

2.02 BACKFILL MATERIAL

A. Select Material Backfill:

1. Crushed stone or gravel aggregate conforming to Select Granular Material (2RC), Section 703.3, Publication 408 Specifications. Do not use slag or cinders.

B. Flowable Backfill Material:

1. Material conforming to PennDOT Special Provision S94 (S2060130), Type A or B as shown in Table 1.

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2. Flowable backfill inside casing pipe shall be Type D.

C. Suitable Backfill Material (Highways, driveways, and shoulders):

1. From top of pipe bedding material to subgrade elevation:

a. Select Material Backfill

b. Flowable Backfill Material - Where directed or approved

D. Suitable Backfill Material (Other than highways, driveways, and shoulders):

1. From top of pipe bedding material to 24" over top of pipe:

a. Material excavated from the trench if free of stones larger than 6" in size and free of wet, frozen, or organic materials.

2. From 24" above pipe to subgrade elevation:

a. Material excavated from the trench if free of stones larger than 8" in size and free of wet, frozen, or organic materials.

Table 1 - Flowable Fill Properties & Criteria Type A Type B Type C Type D

Mix Design ( /cy)

$ Cement (lbs)* $ Fly Ash (lbs)* $ Bottom Ash (lbs)* or Coarse Aggregate or Fine Aggregate

150-200

300-700 100-400

Flow Cone (seconds)

ASTM C939

30-60

30-60****

Slump (inches) PTM No. 600

7-11

7-11

7-11****

Density (pcf) PTM No. 613

95-110***

120-135***

125 min. ***

30-70 or as specified ***

Water Absorption of Aggregate, PTM No. 506

20 (max %)

Compressive Strength (psi) PTM No. 604

$ 3 days (minimum $ 28 days (range)

50-125

50-125

800 min.

90-400

* Quantities may be varied or alternate designs submitted to adapt mix to meet density and strength requirements or to adapt to specific site conditions.

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** Requires the use of suitable lightweight aggregate or air entraining admixture. Provide a mix design that achieves the specified strength and density requirements.

*** Approximate Value. Use of air entraining agent may reduce these values.

**** As appropriate depending on whether lightweight aggregate or air entraining admixture is used to obtain lightweight properties.

3.01 MAINTENANCE AND PROTECTION OF TRAFFIC

A. Maintain traffic in one or more unobstructed lanes and provide access to all streets and private drives.

B. Provide and maintain protective devices as required by state and local codes, permits, and regulations.

3.02 CUTTING PAVED SURFACES PRIOR TO TRENCHING

A. Where installation of pipelines, miscellaneous structures, and appurtenances necessitate breaking a paved surface, make cuts in a neat uniform fashion forming straight lines parallel with the centerline of the trench. Cut offsets at right angles to the centerline of the trench.

B. Protect edges of cut pavement during excavation to prevent raveling or breaking; square edges prior to pavement replacement.

C. The requirement for neat line cuts, in other than state highways, may be waived if the final paving restoration indicates overlay beyond the trench width.

3.03 TRENCH EXCAVATION

A. Depth of Excavation:

1. Gravity Pipelines:

a. Excavate mainline trenches to the required depth and grade for the invert of the pipe plus that excavation necessary for placement of pipe bedding material.

b. Excavation for laterals shall provide a straight uniform grade from the main pipeline to the right-of-way line (in accordance with Section 02610), plus that excavation necessary for placement of pipe bedding material.

2. Pressure Pipelines:

a. Excavate trenches to the minimum depth necessary to place required pipe bedding material and to provide a minimum of 42" from the top of the pipe to the finished ground elevation, except where specific depths are otherwise shown on the Contract Drawings.

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3. Where unsuitable bearing material is encountered in the trench bottom, continue excavation until the unsuitable material is removed, solid bearing is obtained or can be established, or concrete cradle can be placed. If no concrete cradle is to be installed, refill the trench to required pipeline grade with pipe bedding material.

4. Where the CONTRACTOR, by error or intent, excavates beyond the minimum required depth, backfill the trench to the required pipeline grade with pipe bedding material.

B. Width of Excavation:

1. Excavate trenches, including laterals, to a width necessary for placement and jointing of the pipe, and for placing and compacting pipe bedding and trench backfill around the pipe, but not less than 16" or more than 24" plus the pipe outside diameter from the bottom of the trench to a point 12" above the crown of the pipe.

2. Shape trench walls completely vertical from trench bottom to at least 2' above the top of the pipe. Trench walls from 2' above the top of the pipe to grade to be benched and sloped, or shaved, to comply with Federal and State laws and codes.

3. For pressure pipeline fittings, excavate trenches to a width that will permit placement of concrete thrust blocks. Provide earth surfaces for thrust blocks that are perpendicular to the direction of thrust and are free of loose or soft material.

3.04 SUPPORT OF EXCAVATION

A. The adequacy of the design of sheeting, shoring and bracing installations relative to the nature of the material to be encountered and retained is the sole responsibility of the CONTRACTOR and no duty is assumed or to be exercised by OWNER relative thereto.

B. Support excavations with sheeting, shoring, and bracing or a "trench box" as required to comply with Federal and State laws and codes.

C. Install adequate excavation supports to prevent ground movement or settlement of adjacent structures, pipelines or utilities. Damage due to settlement because of failure to provide support or through negligence or fault of the CONTRACTOR in any other manner, shall be repaired at the CONTRACTOR's expense.

D. Removal of sheeting, shoring and bracing as backfilling proceeds is the CONTRACTOR’s responsibility.

3.05 CONTROL OF EXCAVATED MATERIAL

A. Keep the ground surface on both sides of the excavation free of excavated material to comply with Federal and State laws and codes.

B. Provide temporary barricades to prevent excavated material from encroaching on private property, walks, gutters, and storm drains.

C. Maintain accessibility to all fire hydrants, valve pit covers, valve boxes, curb boxes, fire and police call boxes, and other utility controls at all times. Keep gutters clear or provide other satisfactory facilities for street drainage. Do not obstruct natural water courses. Where necessary, provide temporary channels to allow the flow of water either along or across the site of the work.

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D. In areas where pipelines parallel or cross streams, ensure that no material slides, is washed, or is dumped into the stream course. Remove cofferdams immediately upon completion of pipeline construction.

E. Comply with Section 02270, Soil Erosion and Sedimentation Control.

3.06 DEWATERING

A. Keep excavations dry and free of water. Dispose of precipitation and subsurface water clear of the work. Comply with Section 02270, Soil Erosion and Sedimentation Control.

B. Maintain pipe trenches dry until pipe has been jointed, inspected, and backfilled, and concrete work has been completed. Prevent trench water from entering pipelines under construction.

C. Intercept and divert surface drainage away from excavations. Design surface drainage systems so that they do not cause erosion on or off the site, or cause unwanted flow of water.

D. Comply with Federal and State requirements for dewatering to any watercourse, prevention of stream degradation, and erosion and sediment control.

3.07 PIPE BEDDING REQUIREMENTS

A. Type III Bedding:

1. Depth of pipe bedding aggregate as shown on Standard Detail 02221-3.

2. Provide Type III bedding when installing reinforced concrete storm drain pipe.

B. Type IV Bedding:

2. Provide Type IV bedding when installing all other pipes larger than 2" diameter.

C. Type V Bedding:

2. Provide Type V bedding when installing piping 2" diameter and smaller.

D. Shape recesses for the joints or bell of the pipe by hand. Assure that the pipe is supported on the lower quadrant (under “haunches”) and the pipe bottom for the entire length of the barrel.

Fill all voids below the pipe.

E. Pipe embedment material shall be placed, worked by hand or compacted until a minimum density of 90% in yards and 95% under driveways, shoulders, roadways and sidewalks is achieved (at optimum moisture content, + 2%, standard proctor), unless otherwise specified in Section VIII - Technical Provisions (Detailed).

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3.08 PIPE LAYING

A. Provide required pipe bedding placed in accordance with the Standard Details.

B. Lay pipe as specified in the appropriate Section of these Specifications for pipeline construction.

3.09 THRUST RESTRAINT

A. Provide pressure pipe with concrete thrust blocking or use restrained joint fittings at all bends, tees, valves, and changes in direction, in accordance with the Standard Details.

3.10 BACKFILLING TRENCHES

A. After pipe installation and inspection, backfill trenches to 12" above the crown of the pipe with specified backfill material, as per Pipe Bedding Detail (02221-3), placed and carefully compact with approved compaction equipment in layers of suitable thickness to provide specified compaction. Backfill and compact the remainder of the trench with specified backfill material. Refer to Backfill and Surface Restoration Requirements Table in Section 02575 for trench backfill material and compaction requirements at each specific location.

B. Lift Thickness Limitations:

1. Submit a list of the compaction equipment to be utilized on the project, the recommendations of the equipment manufacturer as to the maximum lift thickness which can be placed, and the method of compaction to be used with this equipment to achieve the required compaction. In no case shall maximum lift thickness placed exceed the maximum limits specified by the manufacturer's recommendations. However, if the equipment manufacturer's lift thickness recommendation is followed and the specified compaction is not obtained, the CONTRACTOR shall, at his own expense, remove, replace, and retest as many times as is required to obtain the specified compaction.

2. Lift thickness limitations specified for state highways, shoulders, or embankments shall govern over the compaction equipment manufacturer's recommendations.

C. Jetting:

1. When approved by the Soil Testing Lab ENGINEER in writing, jetting methods may be used to consolidate backfill. Quality assurance methods to verify adequate compaction will be a condition of the approval by the Soil Testing Lab ENGINEER.

D. Uncompacted Backfill:

1. Where uncompacted backfill is indicated on the Contract Drawings, backfill the trench from one foot above the pipe to the top of the trench with material excavated from the trench, crowned over the trench to a sufficient height to allow for settlement to grade after consolidation, providing for surface water drainage.

E. Unsuitable Backfill Material:

1. Where the COTR deems backfill material to be unsuitable and rejects all or part thereof due to conditions prevailing at the time of construction, remove the unsuitable material

02221-9 and replace with select material backfill.

3.11 DISPOSAL OF EXCAVATED MATERIAL

A. Excavated material remaining after completion of backfilling shall remain the property of the CONTRACTOR, removed from the construction area, and legally disposed of.

3.12 ROUGH GRADING

A. Rough subgrade areas disturbed by construction to a uniform finish. Form the bases for terraces, banks, and lawns.

B. Grade areas to be paved to depths required where placing subbase and paving materials.

C. Rough grade areas to be topsoiled and seeded to 4" below indicated finish contours.

3.13 RESTORATION OF UNPAVED SURFACES

A. Restore unpaved surfaces disturbed by construction to equal the surface condition prior to construction.

B. Restore grassed areas in accordance with Section 02485, Finish Grading, Seeding and

Sodding.

3.14 LIMITS OF WORK

A. All disturbances shall be confined to OWNER’s property, street rights-of-way, permanent limits, and construction limits shown on the Contract Drawings.

B. The CONTRACTOR shall not permit trucks and equipment to enter private driveways.

C. All work shall be confined to the Municipal or state highway rights-of-way and permanent rights-of-way on construction rights-of-way shown on the Contract Drawings.

D. The CONTRACTOR shall not permit trucks and equipment to enter private property except where limits are provided or prior written permission from the OWNER has been obtained by the CONTRACTOR.

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SECTION 02270

SOIL EROSION AND SEDIMENTATION CONTROL

1. Installation of soil erosion and sedimentation control (SESC) measures as per approved plan.

2. Maintenance of SESC measures.

3. Restoration of area and removal of any interim SESC measures placed to protect areas from erosion during stabilization period.

2. Site excavation and placement of fill material: Section 02210

3. Finish grading, seeding, sodding: Section 02485

4. Storm drain pipe: Section 02618

Publication 72M, Roadway Construction Standards (RC 0-99)

2. Pennsylvania Department of Environmental Protection (PA DEP):

Erosion and Sediment Pollution Control Program Manual Document No. 363-2134-008, Effective April 15, 2000 or latest revisions thereof as released in accordance with PA Code 25 Chapter 102.

3. Asphalt Institute Specifications

A. Soil Erosion and Sedimentation Control plan for this project is included in The Contract Drawings. The CONTRACTOR shall regard this plan as a minimum standard. This plan may not be adjusted by the CONTRACTOR without prior approval of the County Conservation District and other regulatory agencies as applicable, and by means of a Contract Change Order.

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1.04 JOB CONDITIONS: Section Not Utilized.

PART 2 MATERIALS

2.01 STONE FOR RIP-RAP

A. Stone used shall be the type and size of rip-rap shown on Contract Drawings and shall meet the requirement of Publication 408, Section 850.

2.02 MATTING FOR EROSION CONTROL

A. The CONTRACTOR shall furnish a certification from the manufacturer that the matting conforms to the requirements prescribed hereinafter.

B. Jute matting for erosion control:

1. As specified in Publication 408, Section 806.2(a).

C. Excelsior matting:

1. As specified in Publication 408, Section 806.2(b).

D. Nylon matting:

1. As specified in Publication 408, Section 806.2(d).

2.03 EROSION CONTROL DEVICES

A. Silt Barrier Fence:

1. Geotextiles, Class 3: As specified in Publication 408, Section 735.1 (a) (b) (c) (d) and Section 865.2 (a).

2. Mesh Support: As specified in Publication 408, Section 865.2(b).

3. Post:

a. Wood or steel or acceptable plastic with equivalent section and sufficient length for height of fence required.

b. As specified in Publication 408, Section 865.2 (c).

4. Fasteners: As specified in Publication 408, Section 865.2(d).

5. Ground Anchors, Guy Wires: As specified in Publication 408, Section 865.2 (e) (f).

B. Compost Filter Sock:

1. Sock: High-density polyethylene (HDPE) expandable, tubular, biodegradable or photodegradable, 3 mil to 5 mil, 3/8 inch knitted meshes netting. Size as specified on Contract Drawings, as specified in Publication 408, Section 866.2.b

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C. Compost: Well-decomposed, stable, weed-free, organic compost meeting AASHTO MP-9 as specified in Publication 408 Section 866.2.a.

D. Stakes 2 inch x 2 inch wood or equivalent steel stakes, length provided to ensure a minimum embedded depth of 18 inches and 3-4 inches extended above the top of the sock.

2.04 TEMPORARY COVER

A. Seed: As specified in Section 02485.

B. Seed Mixtures: As specified in Section 02485.

C. Inoculant: As specified in Section 02485.

2.05 SOIL SUPPLEMENT MATERIALS

A. Fertilizer: As specified in Section 02485.

B. Agricultural Lime: As specified in Section 02485.

2.06 MULCHING MATERIALS

A. Straw: As specified in Section 02485.

B. Wood Cellulose Fiber: As specified in Section 02485.

C. Mulching Binder:

1. Emulsified Asphalt: SS-1, CSS-1, CMS-1, MS-2, RS-1, RS-2, CRS-1, or CRS-2.

Designations from Asphalt Institute Specifications.

D. Wood Chips: Wood chips, recovered from clearing and grubbing operation will be acceptable as mulch for seeding and shall be used at a rate of 35 cubic yards per acre.

2.07 STORM DRAIN PIPE

A. As specified in Section 02618.

2.08 PUMPED WATER FILTER BAG

A. As specified in Standard Detail 02270-7.

3.01 CONSTRUCTION SEQUENCE

A. All earth disturbance activities shall proceed in accordance with the following sequence. Each stage shall be completed and immediately stabilized before any following stage is initiated.

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1. Clearing

2. Grubbing

3. Topsoil stripping shall be limited only to those areas described in each stage.

B. At least three (3) days before starting any earth disturbance activities, all contractors involved in those activities shall notify the Pennsylvania One Call System Incorporated at 1-800-242-1776 for the location of existing underground utilities.

C. The CONTRACTOR shall clear and grub areas only required to be cleared by the proposed construction. The detailed construction sequence listed on the allowed plan shall be strictly followed.

D. Immediately upon discovering unforeseen circumstances posing the potential for accelerated erosion and/or sediment pollution, the operator shall implement appropriate best management practices to eliminate the potential for accelerated erosion and/or sediment pollution.

E. The OWNER shall field mark the…