ATCH 1 A-11 Outfall spec.doc

REVISED SPECIFICATIONS AMENDMENT 02 8/16/2011 A-11 Outfall

ATTACHMENT 1 TABLE OF CONTENTS

DIVISION 1

GENERAL REQUIREMENTS

01110

Summary of Work

01270

Measurement & Payment

01330

Submittals

01420

Reference Standards

01450

Quality Control

DIVISION 2

SITE WORK

02220

Mobilization

02230

Clearing & Grubbing

02240

Dewatering

02315

Earthwork

02370

Soil Erosion & Pollution Control

02372

Riprap

02373

Geotextile

02455

Steel Sheet Piling 02500

Bituminous Coated CMP 02920

Seeding

03200

Cast in Place Concrete

SECTION 01110

SUMMARY OF WORK

PART 1 GENERAL

1.1 LOCATION AND DESCRIPTION

A. The project area is located on the Department of Energy’s Savannah River Site located within Aiken County, South Carolina. The project area is approximately 9 miles southwest of barricade 2 (Aiken barricade located at the junction of SC State Highway 278 and 19).

B. The project consists of clearing and grubbing, excavation and disposal, installation of 100 linear feet (60 tons) Steel Sheet Piling to stabilize an existing channel, installation 10.5 linear feet of a Bituminous Coated Corrugated Steel Pipe Riser, placement of concrete, geotextile and riprap, and erosion control measure. NOTE: A PRE-BID SITE VISIT IS STRONGLY ENCOURAGED.

C. The construction of the project will begin after the government completes site work for the crane (Anticipated 30 day maximum). Note: site work for access to one side of the channel provided by the Government.

1.2 WORK REQUIREMENTS THE CONTRACTOR SHALL:

A. Furnish all labor, personnel, supervision, equipment, materials, supplies, tools, transportation, travel, incidentals, and perform all of the work as SHOWN ON THE DRAWING AND SPECIFICATION.

SECTION 01270

MEASUREMENT AND PAYMENT

PART 1 GENERAL

1.1 DETERMINATION OF QUANTITIES

A. For individual construction items, all longitudinal and lateral measurements for area computations shall be made horizontally or corrected to horizontal measurement unless otherwise specified.

B. Measurements for seeding, mulching, geotextiles, netting, erosion control blankets, and sodding will be along slope lines.

C. The average end area method shall be used to compute volumes of excavation and embankment.

D. Structures will be measured according to neat lines SHOWN ON THE DRAWINGS or as altered by the Contracting Officer's Representative (COR) in writing to fit field conditions.

E. For items that are measured by the linear foot, such as pipe culverts, fencing, guardrail and underdrains, measurements will be made parallel to the base or foundation upon which the structure is to be placed. Pipe shall be measured along center of invert.

F. For vehicular shipments, net certified scale weights or weights based on volumes will be used as a basis of measurement.

1.2 UNITS OF MEASUREMENT

A. Payment will be by units defined and determined according to the U.S. Standard measure and by following:

Cubic Yard: Measurements computed by the average end area method from measurements made longitudinally along a centerline or reference line.

Each: One complete unit, which may consist of one or more parts.

Ton: Short ton consisting of 2,000 pounds.

1.3 METHODS OF MEASUREMENT

A. One of the following methods of measurement for determining the final payment is designated in the contract for each Pay Item.

B. Designed Quantities (DQ): These quantities denote the final number of units to be paid for under the terms of the contract. They are based upon original design data available prior to advertising the project. This data includes the preliminary survey information, drawings design assumptions, calculations and the presentation in the contract. Authorization for changes in the number of units SHOWN in the contract may be given under any of the following conditions:

a. As a result of changes in the work authorized by the Contracting Officer (CO).

b. As a result of the Contracting Officer determining that errors exist in the original design that may cause a Pay Item quantity to change by 15% or more.

c. As a result of the Contractor submitting a written request showing evidence of errors in the original design that cause a Pay Item quantity to change by 15% or more. The evidence must be verifiable and consist of calculations, drawings and/or other data that shows how the designed quantity is believed to be in error.

C. Actual Quantity (AQ).: These quantities are determined from measurements of completed work.

D. Lump Sum Quantities (LS): These quantities denote one complete unit of work as required by or described in the contract, including necessary materials, equipment, and labor needed to complete the job. They will not be measured.

E. Vehicle Quantities (VQ): These quantities are measured or weighed in hauling vehicles.

SECTION 01330

SUBMITTALS

PART 1 GENERAL

1.1 REQUIREMENTS INCLUDED

A. Procedures B. Manufacturers Instructions C. Manufacturers Certificates D. Construction Schedule

1.2 PROCEDURES

A. Submittals shall be furnished before fabrication or installation occurs.

B. All submittals shall be evaluated and either approved or rejected by the COR within 14 days after their receipt.

C. A minimum of two (2) copies of submittals shall be supplied to the COR D. If the Contractor intends to provide or install an item that is an "or equal" or differs from that which is specified or shown on the drawings, he/she shall submit all product data, revised drawings or new drawings to the COR for approval. COR approval must be attained before ordering item.

1.3 MANUFACTURER'S INSTRUCTIONS

A. The Contractor shall provide three (3) copies of all of the manufacturers installation and maintenance instructions (written and/or drawings) to the COR

1.4 MANUFACTURER'S CERTIFICATES

A. The Contractor shall provide all guarantees, certificates of performance, material of workmanship or warranties provided by the manufacturer or required by the specifications to the COR

1.5 CONSTRUCTION SCHEDULE

A. Format

a. Horizontal bar chart of sufficient size to clearly indicate all required information.

b. Time divided into months, weeks, and days. Identify the first workday of each week.

c. Electronic files shall be in pdf format.

B. Quality

a. Provide a separate bar for each activity.

b. Indicate the start and completion dates for each activity, and percent of task completion.

c. Activities shown should include, but should not be limited to,

a. Mobilization/Demobilization

b. Sheet Pile (PZ27 A572 Gr.50)

c. Bituminous Coated Corrugated Metal Culvert Pipe

d. Seeding

e. Clearing and Grubbing

f. Concrete Reinforcement

g. Cast-in-Place Concrete

h. Earthwork/ Grading of basin

i. Riprap Placement

j. Geotextile Placement C. Submittal

a. An initial construction schedule shall be submitted to the CO at the pre-work meeting.

b. An updated schedule will be submitted as necessary showing any significant schedule changes.

c. Schedule and progress revisions shall be submitted within 2 days after receiving update request from the CO.

D. Use of the Schedule

a. Adhere to, and require that all Subcontractors and Suppliers adhere to, the construction schedule. Where this is not feasible, ensure that the construction schedule is revised to reflect actual schedule changes.

E. Revision

a. Schedule will be revised and resubmitted at the CO’s request, or if:

b. Progress of work is substantially different from the latest schedule,

c. Work is being performed in a sequence that is not in keeping with the general work sequence of the latest construction schedule, or

d. A revision is necessary to reflect a required adjustment to the Contract Time negotiated between the Contractor and CO.

1.6 BASIS OF PAYMENT

NOT A PAY ITEM. Incidental to other work.

SECTION 01420

REFERENCE STANDARDS

PART 1 GENERAL

1.1 QUALITY ASSURANCE

A. For products or workmanship specified by association, trade, or Federal Standards, comply with the requirements of the standard, except when more rigid requirements are specific or required by applicable codes.

1.2 SCHEDULE OF REFERENCES

AASHT0 American Association of State Highway and

Transportation Officials

ANSI American National Standards Institute

ASTM American Society for Testing and Materials

AWS American Welding Society

FS Federal Specification

1.3 TOLERANCES

A. Construction tolerances shall be as follows:

Elevations +/- 0.2 feet

Alignment +/- 0.5 feet

Plumbness

+/- 1.8” per foot in the plane of wall (sheet piling)

SECTION 01450

QUALITY CONTROL

PART 1 GENERAL

1.1

WORK INCLUDED

A. The work shall consist of providing quality control in conformance with the Inspection of Contract provisions of this contract to ensure compliance with the drawings, specifications and provisions of the contract. The Contractor shall provide all personnel, equipment, tests and reports necessary to meet the requirements of this specification.

PART 2 PRODUCTS

Not Used

PART 3 EXECUTION

3.1

QUALITY CONTROL

A. The Contractor shall provide and maintain a quality control system that will ensure that all services, supplies and construction required under this contract conform to the contract requirements. The Contractor shall perform, or cause to be performed, the sampling, inspection and testing required to substantiate that all supplies, services and construction conform to the contract.

B. Contractor shall comply with specified standards as minimum quality for the work except where more stringent tolerances, codes, or specified requirements indicate higher standards or more precise workmanship.

C. Contractor shall verify that field measurements are as indicated on shop drawings or as instructed by the manufacturer

3.2

QUALITY CONTROL PLAN

A. The Contractor shall submit in writing the following:

a. Authorities and responsibilities of inspection and testing personnel.

b. Experience and qualifications of inspection and testing personnel to be assigned and location of any (for hire) testing facility to be used.

B. The Contractor's proposed quality control plan shall be submitted to the COR for review prior to the contractor starting work. The COR shall approve or disapprove the plan within 5 working days. Construction work shall not begin prior to the contractor's receipt of written approval of the plan.

C. The contractor shall submit to the COR in writing any proposed changes to the approved plan.

3.3

SAMPLING & TESTING

A. The contractor shall provide and maintain appropriate measuring and testing devices, equipment and supplies to accomplish the required measurement, testing and inspection in a timely manner.

B. The contractor shall take samples and perform inspections and tests necessary to achieve the quality of construction required by the contract. Sampling & testing frequency for specific items shall be as defined in the specifications.

3.4

RECORDS

A. The contractor shall maintain current records of all inspections and test performed. The following format or one containing the following information will be acceptable to the Government:

Project Number ____________________________ Contract Number _____________________________

Pay Item

Test Date Station

Standard

Results

Initials

B. The contractor shall certify in writing that all inspections were performed in accordance with the specifications.

C. The contractor shall submit all testing and inspection records to the COR upon completion of the project.

3.5 AS BUILT DRAWINGS

A. Upon completion of the project, the Contractor shall provide a complete set of as built coordinates of all completed construction. Drawings shall be in Autocad format and submitted on a CD.

3.6 BASIS OF PAYMENT

SECTION 02220

MOBILIZATION/DEMOBILZATION

PART 1 GENERAL

1.1

WORK INCLUDED

A. The work shall consist of preparatory work and operations necessary for the movement of personnel, equipment, supplies and incidentals to and from the project site. This includes all work and operations that must be performed or that cause costs to be incurred prior to beginning work on the various items on the project site.

3.1

BASIS OF PAYMENT

PAY ITEM

PAY UNIT

02220(01) Mobilization/ Demobilization..............................Lump Sum

SECTION 02230

CLEARING & GRUBBING

PART 1 GENERAL

1.1

WORK INCLUDED

A. The work shall consist of clearing, trimming, and disposing of timber, construction slash and debris.

B. The Contractor shall be responsible for clearing and rehabilitating any temporary access roads or pads needed to accomplish the work. Temporary access roads may originate from the existing roads to the north or south of the project area, shown on Sheet 2 of the drawings.

C. Cleared or disturbed area shall be minimized where possible. Total land disturbance (cleared area) shall be less than 1/2 acre.

3.1

CLEARING

A. Clearing limits shall be flagged on the site by the Contractor and approved by the COR prior to the start of any clearing work.

B. All trees within the clearing limits shall be cut and removed to a disposal area designated by the COR located near the project site, or scattered uniformly outside the clearing limits. No debris or timber shall leave the Savannah River Site.

C. Stumps shall be left in place during and after construction to maintain slope stability.

3.2

GRUBBING

A. Stumps, logs and other protruding objects shall be grubbed to a depth of 6” and scattered outside the clearing limits.

B. All roots over 3” in diameter protuding from the excavated slope shall be cut flush with excavated slope.

3.2

PROTECTION

A. Use extreme caution to protect trees and any other object not designated for removal from both defacement or injury. Damage shall be mitigated to the satisfaction of the COR.

B. No construction slash shall be deposited in roads, streams, streambeds, or the drainage structures.

C. Disturbed areas shall be monitored and protected from erosion according to Section 02370, Soil Erosion and Pollution Control.

3.3

REHABILITATION

A. Cleared or disturbed areas shall be rehabilitated when no longer needed. Rehabilitation shall consist of grass seeding in accordance with Section 02920, Seeding.

B. Erosion control measures shall be left in place at close of project.

3.4 BASIS OF PAYMENT

NOT A PAY ITEM. Incidental to other work.

SECTION 02240

DEWATERING

PART 1 GENERAL

1.1 WORK INCLUDED

A. Removal of surface water shall be performed as needed.

3.1 DEWATERING

A. The Contractor shall furnish, install, operate and maintain all drains, sumps, pumps, casings, wellpoints and all other equipment needed to perform any necessary dewatering.

3.2 REMOVAL OF TEMPORARY WORKS

A. The Contractor shall remove (level and grade) all temporary works to prevent any obstruction to the flow of water. Areas shall be finished in accordance with Section 02315 - Earthwork, 3.05 FINISHING SLOPES.

B. Pipes and casings shall be removed from any temporary wells and they shall be filled to ground level with gravel or any other suitable material approved by the C.O.R.

3.4 EROSION AND POLLUTION CONTROL

A. Dewatering activities shall be accomplished in such a manner as to both control and minimize erosion and the transmission of any pollutants.

3.5 BASIS OF PAYMENT

SECTION 02315

EARTHWORK

PART 1 GENERAL

1.1 WORK INCLUDED

A. This work shall consist of excavation, haul,embankment construction,and shaping complete the stabilization of the construction site.

PART 2 PRODUCTS

PART 3 EXECUTION

3.1 PROTECTION

A. The Contractor shall take all necessary precautions to prevent damage to any areas outside of the clearing limits. Any areas disturbed outside of the clearing limits shall be restored to the satisfaction of the COR at no additional cost to the Government.

3.2 PREPARATION

A. The Contractor shall set all required lines AS SHOWN ON THE DRAWING to provide grade and alignment control.

B. The Contractor is responsible for protecting any control points needed for grade and alignment control. The Contractor at his/her own expense shall reestablish any required control points disturbed during construction.

3.3 Excavation A. All excavated material shall be hauled to the C and D Landfill

(approximately 12 miles from the project site.

B. The Contractor shall meet all OSHA safety regulations for sloping sides of excavations.

C. All excavated areas shall be shaped so that no sharp breaks or pockets exist. The typical slope shall be 3:1 unless shown otherwise on the drawing.

3.5

FINISHING SLOPE

A. Finished slope shall conform to the contours.

B. The tops of excavation shall be blended with the adajacent terrain by rounding.

02315(01) Excavation and Hauling .............................Cubic Yard, DQ

SECTION 023370

SOIL EROSION AND POLLUTION CONTROL

PART 1 GENERAL

1.1 WORK INCLUDED

A. This work shall consist of temporary measures to control soil erosion and minimize the production of sediment and other pollutants to water and air during construction operations.

B. The control provisions shall be coordinated with the permanent erosion control features in the contract to ensure effective and continuous protection throughout the construction period.

PART 2 PRODUCTS

A. Silt fence shall be AMOCO LANDSAVER LS25 or equal.

PART 3 EXECUTION

3.1 EROSION AND SEDIMENT CONTROL MEASURES

A. Silt Fence

a. No work shall begin until the required silt fence has been installed, as per the COR.

b. The silt fence shall be maintained until construction has been completed.

c. Silt fence shall be installed as recommended by the manufacturer.

d. Temporary erosion control measures required due to negligence or carelessness by the Contractor shall be performed by the Contractor at his/her own expense.

e. The excavation and moving of soil materials shall be scheduled so that the smallest possible areas will be unprotected from erosion for the shortest time feasible.

f. Diversions or pumps shall be used to remove water from work areas and/or to collect runoff from work areas for both treatment and safe disposition.

g. Straw bales or silt fences shall be used to trap sediment from areas of limited runoff. Bales are temporary and shall be removed when permanent measures are completed.

h. Contractor shall maintain roads and provide dust control as necessary.

i. Silt fence shall be properly installed along grade lines downhill from the disturbed areas. Bottom edge of silt fence shall be buried per manufacturers instructions.

j. Sediment behind silt fence shall be removed and redistributed within disturbed area if sediment depth reaches 30% of silt fence height at any point along fence length.

3.2 CHEMICAL POLLUTION

A. The Contractor shall remove daily all by-products produced as a result of construction, including drained lubricating fluids, greases, soaps, asphalt, etc.

3.3 SANITARY FACILITIES

A. Sanitary facilities such as chemical toilets shall not be located adjacent to a live stream.

B. Sanitary facilities shall be located at a distance adequate to prevent contamination of any water source.

3.4 MAINTENANCE, REMOVAL AND RESTORATION

A. All measures and works described above shall be adequately maintained as long as necessary during construction.

B. After construction is complete, all temporary measures shall be removed and the site restored to as nearly original conditions as practicable. Silt fence shall be left in place at the close of the work.

SECTION 02372

RIPRAP

PART 1 GENERAL

1.1 WORK INCLUDED

A. This work shall consist of furnishing and placing loose rock riprap at locations as shown on the drawings.

1.2 REFERENCES

FS-FP03 Federal Specification Section 705.02 Rock AASHT0 American Association of State Highway and

AASHTO T 85

Specific Gravity and Absorption of Coarse Aggregate AASHTO T 210 Aggregate Durability Index

PART 2 PRODUCTS

2.1 RIPRAP

A. Riprap shall be hard angular granitic rock meeting the following gradation requirements:

Size of Stone (lbs)

% total Weight smaller than given size not to exceed 10

B. Neither the breadth nor thickness of any piece of riprap shall be less than 1/3 its length. Stone shall be free from overburden, spoil, shale and organic matter.

2.2 CERTIFICATION

A. The Contractor shall provide certification of gradation for all riprap.

PART 3 EXECUTION

3.1 PREPARATION

A. Riprap shall not be placed until subgrade preparation has been completed. The subgrade shall be approved by the COR prior to riprap placement.

B. Geotextile shall be installed under the riprap in accordance with Section 02373 GEOTEXTILE.

3.2 MACHINE PLACED RIPRAP

A. Riprap stone shall be placed to produce a well-keyed mass of rock with the least practicable amount of void spaces.

B. Larger pieces shall be well distributed and the finished layer of rock shall contain no segregated pockets of small pieces or groups of large pieces which could cause large open voids. Rearranging of the individual pieces by mechanical equipment, or by hand, may be required to the extent necessary to obtain a reasonably well graded distribution of sizes as specified above.

C. The finished riprap slopes shall present a reasonably uniform and regular surface, free of humps and depressions.

3.4 BASIS OF PAYMENT

02372(01)Riprap .....................................................Ton

SECTION 02373

GEOTEXTILE

PART 1 GENERAL

1.1 WORK INCLUDED

A. This work shall consist of furnishing all materials, equipment, and labor required for the installation of geotextile prior to riprap placement.

1.2 CERTIFICATIONS

A. A manufacturer's Certificate of Compliance shall be furnished to the COR for all materials provided by the Contractor. This certificate shall be accompanied by a document stating the manufacturer's minimum average roll values (MARV) for the geotextile. (MARV are two standard deviations below the mean value of all rolls tested.) A copy of the Certificate of Compliance must accompany each geotextile used in the construction process.

1.3 REFERENCES

AASHT0 American Association of State Highway and

AASHTO M 288 Geotextile Specification

FS-FP03 Federal Specification Section 714 Geotextile and Geocomposite Drain Material

PART 2 PRODUCTS

2.1 GEOTEXTILES

A. Geotextile shall be Non-Woven Fabric or equal.

PART 3 EXECUTION

3.1 STORAGE

A. During shipment and storage, geotextiles shall be wrapped with a protective coating to protect the fabric from mud, dirt, dust, debris and direct sunlight.

B. Receiving, storage and handling at the job site shall meet the requirements of A.S.T.M D4873.

3.2 PREPARATION

A. Geotextiles shall be placed under all riprap as shown on the drawings.

B. Surfaces receiving geotextile shall be prepared to a relatively smooth condition that is free of obstructions, depressions and debris. The C.O.R. shall be notified prior to placement in order to approve the surface condition.

3.3 PLACEMENT

A. The fabric shall be unrolled and laid loosely along the placement area without wrinkles or creases.

B. Fabric shall be overlapped 18 inches (minimum) at joints. Securing pins shall be inserted at a maximum interval of 3 feet.

C. The fabric upstream or up-slope shall overlap the abutting downslope geotextile.

D. At vertical laps, securing pins shall be inserted through both layers along a line through approximately the midpoint of the overlap.

E. At horizontal laps and across slope laps, securing pins shall be inserted through the bottom layer only.

F. Securing pins shall be placed along a line approximately two (2) inches from the edge of the placed geotextile.

G. Additional pins shall be installed as necessary to prevent any slippage of the fabric.

3.4 PROTECTION

A. The geotextile shall be protected from contamination and damage during installation of the other materials.

B. Geotextile shall not be placed until it can be anchored and protected with the specified cover within 48 hours or protected from exposure to ultraviolet light.

C. In no case shall material be dropped on uncovered fabric from a height greater than 3 feet.

3.5 FABRIC REPAIRS

A. If the fabric is torn, punctured or the overlaps are disturbed, as evidenced by subgrade pumping, intrusion, visible geotextile damage or grade distortion the Contractor shall be responsible for restoring the area to the original approved condition.

B. The repair of torn/punctured fabric shall consist of a patch of the same type of fabric overlying the existing geotextile. The patch shall extend a minimum of 2 feet from the edge of any damaged area. Securing pins shall be placed a minimum of twelve (12) inches from any damaged areas.

3.6 BASIS OF PAYMENT

02373(01)Geotextile...........................................Square Yard

SECTION 02455

STEEL SHEET PILING

PART 1 GENERAL

1.1

WORK INCLUDED

A. This work shall consist of furnishing and driving steel sheet piling.

1.2

REFERENCES

A. The publications listed below form a part of this specification to the extent referenced. The publications are referred to in the text by basic designation only.

AMERICAN SOCIETY FOR TESTING AND MATERIALS (A.S.T.M)

-ASTM A 328/A 328M- (1992)

Steel Sheet Piling

-ASTM A 572/A 572M- (1992b) High-Strength Low-Alloy Columbium Vanadium Steels of Structural Quality

-ASTM A 690/A 690M- (1992)

High-Strength Low-Alloy Steel H-Piles and

Sheet Piling for Use in Marine Environments

-ASTM B 221- (1992a)

Aluminum and Aluminum-Alloy Extruded Bars,Rods, Wire, Shapes, and Tubes

-ASTM B 221M- (1992a)

Aluminum and Aluminum-Alloy Extruded Bars,Rods, Wire, Shapes, and Tubes

-ASTM B 308/B 308M-(1992a) Aluminum-Alloy 6061-T6 Standard Structural Shapes

-ASTM A 950/A 950M- (2007)

Standard Specification for Fusion-Bonded Epoxy- Coated Sturctural Steel H-Piles and Sheet Piling 1.3

SUBMITTALS

A. The Contractor shall submit the following:

1) Pile Driving Equipment: Complete descriptions of sheet piling driving equipment including hammers, extractors, protection caps and other installation appurtenances shall be submitted for approval prior to commencement of work.

2) Materials Tests: Certified materials tests reports showing that sheet piling and appurtenant metal materials meet the specified requirements shall be submitted for each shipment and identified with specific lots prior to installing materials.

1.4

DELIVERY, STORAGE AND HANDLING

A. Materials delivered to the site shall be new and undamaged and shall be accompanied by certified test reports. The manufacturer's logo and mill identification mark shall be provided on the sheet piling as required by the referenced specifications. Sheet piling shall be stored and handled in the manner recommended by the manufacturer to prevent permanent deflection, distortion or damage to the interlocks. Storage of sheet piling should also facilitate required inspection activities.

PART 2 PRODUCTS

2.1

METAL SHEET PILING

A. Sheet piling shall be hot rolled steel sections conforming to ASTM A328,Section PZ27 A572 Gr50, as manfacturered by Skyline Steel, or equal. The interlocks of sheet piling shall be free-sliding, provide a swing angle suitable for the intended installation but not less than 5 degrees when interlocked, and maintain continuous interlocking when installed.

B. Sheet piling shall be extended to the elevation(s) shown on the drawings.

C. Sheet piling shall be coated with coal tar expoxy with a minimum of 16 mils maxium of 24 mils NOTE: prepare surface and apply according to the coating manufacturer’s recommendations.

2.2

APPURTENANT METAL MATERIALS

A. Metal plates, shapes, bolts, nuts, rivets and other appurtenant fabrication and installation materials shall conform to manufacturer's standards and to the requirements specified in the respective sheet piling standards.

2.3

TESTS, INSPECTIONS, AND VERIFICATIONS

A. Sheet piling and appurtenant materials shall be tested and certified by the manufacturer to meet the specified chemical, mechanical and section property requirements prior to delivery to the site. Testing of sheet piling for mechanical properties shall be performed after the completion of all rolling and forming operations.

PART 3 EXECUTION

3.1

PILE DRIVING EQUIPMENT

A. Driving hammers shall be steam, air, or diesel drop, single-acting, double-acting, differential-acting (or vibratory) type. The driving energy of the hammers shall be as recommended by the manufacturer for the piling weights and subsurface materials to be encountered.

3.2

PLACING AND DRIVING

A. Any excavation required within the area where sheet pilings are to be installed shall be completed prior to placing sheet pilings.

B. Temporary wales, templates or guide structures shall be provided to insure that the pilings are placed and driven to the correct alignment. At least two templates shall be used in placing each piling and the maximum spacing of templates shall not exceed 20 feet. Pilings properly placed and driven shall be interlocked throughout their length with adjacent pilings to form a continuous diaphragm throughout the length and run of piling wall.

C. Pilings shall be driven with the proper size hammer and by approved methods so as not to subject the pilings to damage and to ensure proper interlocking throughout their lengths. Driving hammers shall be maintained in proper alignment during driving operations by use of leads or guides attached to the hammer. Caution shall be taken in the sustained use of vibratory hammers, when a hard driving condition is encountered, to avoid interlock-melt or damages. The use of vibratory hammers should be discontinued and impact hammers employed when the penetration rate due to vibratory loading is one foot or less per minute. A protecting cap shall be employed in driving when using impact hammers to prevent damage to the tops of pilings.

D. Pilings damaged during driving or driven out of interlock shall be removed and replaced at the Contractor's expense. Pilings shall be driven without the aid of a water jet (unless otherwise authorized by COR).

E. Adequate precautions shall be taken to insure that pilings are driven plumb. If at any time the forward or leading edge of the piling wall is found to be out-of-plumb in the plane of the wall, the piling being driven shall be driven to the required depth and tapered pilings shall be provided and driven to interlock with the out-of-plumb leading edge or other approved corrective measures shall be taken to insure the plumbness of succeeding pilings. The maximum permissible taper for any tapered piling shall be 1/8 inch per foot of length.

F. Pilings in each run or continuous length of piling wall shall be driven alternately in increments of depth to the required depth or elevation. No piling shall be driven to a lower elevation than those behind it in the same run except when the pilings behind it cannot be driven deeper. If the piling next to the one being driven tends to follow below final elevation it may be pinned to the next adjacent piling. If obstructions restrict driving a piling to the specified penetration the obstructions shall be removed or penetrated with a chisel beam. If the Contractor demonstrates that removal or penetration is impractical the Contractor shall make changes in the design alignment of the piling structure as directed to insure the adequacy and stability of the structure.

G. Pilings shall be driven to the specified depths shown on the drawings and shall extend up to the elevation indicated for the top of pilings.

3.3

CUTTING-OFF AND SPLICING

A. Pilings driven below the required top elevation, damaged by driving, or cut off to permit further driving shall be extended as required to reach the top elevation at no additional cost to the Government. Pilings adjoining spliced pilings shall be full length unless otherwise approved. Ends of pilings to be spliced shall be squared to eliminate dips or camber. Pilings shall be spliced together with concentric alignment of the interlocks so that there are no discontinuities, dips or camber at the abutting interlocks. Spliced pilings shall be free sliding and able to obtain the maximum swing with contiguous pilings.

B. The tops of pilings excessively battered during driving shall be trimmed when directed at no cost to the Government. All cutting shall be done in a neat and workmanlike manner. A straight edge shall be used in cuts made by burning to avoid abrupt nicks. Bolt holes in steel piling shall be drilled or may be burned and reamed by approved methods which will not damage the surrounding metal. Exposed edges shall be ground smooth.

3.4

METHOD OF MEASUREMENT

A. The estimated quantities of sheet piling listed in the unit price schedule of the contract are given for bidding purposes only. Installed sheet piling quantities shall consist of the linear footage of piling including fabricated sections driven between the required top and bottom elevations of pilings plus any additions thereto resulting from changes in design or alignment as provided in Section 02455, 3.02 PLACING AND DRIVING.

B. The method of measurement, as described in Section 01270, will be designated in the SCHEDULE OF ITEMS.

3.5

BASIS OF PAYMENT

A. The acceptable quantities will be paid for at the contract unit price for each pay item shown in the SCHEDULE OF ITEMS.

Pay Item

Pay Unit

02455(01) Steel Sheet Piling......................................Ton

SECTION 02500

Bituminous Coated Corrugated Metal Culvert Pipe

PART 1 GENERAL

1.1 WORK INCLUDED

A. Corrugated metal pipe shall consist of furnishing and placing corrugated metal pipe conforming to these specifications. The pipe shall be furnished to the sizes and dimensions required and shall be installed in such places as shown on the drawings or as designated by COR, in accordance with these specifications.

1.2 REFERENCES

American Association of State Highway and Transportation Officials

1. AASHTO M36 – Corrugated Steel Pipe, Metallic Coated, for Sewers and Drains.

2. AASHTO M190 – Bituminous-Coated Corrugated Metal Culvert Pipe and Pipe Arches.

3. AASHTO M 218 - Steel Sheet, Zinc Coated (Galvanized) for Corrugated Steel Pipe.

PART 2 PRODUCTS

2.1 BITUMINOUS COATED CORRUGATED METAL PIPE

A. The pipe conforming to the requirements of AASHTO M36.

B. Either annular or helical pipe corrugation shall be acceptable.

C. Bituminous coated conduits and their coupling bands shall meet the requirements of AASHTO M190. Bituminous coating shall be Type A. Coupling bands shall be fully coated with bituminous material. Pipe shall be conforming to the requirement of AASHTO M 218 zinc coating (galvanized) for corrugated steel pipe.

D. The pipe shall be uniformly coated inside and out to a minimum thickness of 0.05-inch, measured on the crests of the corrugation.

E. The imperviousness test for coated pipe may be waived by the C.OR. if no separation of coating from material is observed.

2.2 RISER ASSEMBLY

A. Riser pipe shall meet the requirements of Section 2.1.

B. Remove every other existing bar from grate as designated by the COR.

C. Selected section of rebar on the existing gate on the top of the riser asembly shall be cut. Note: see drawing for details D. Finished Riser assembly shall be recoated as necessary to meet the requirement of 2.1 Bituminous-Coated Corrugated Steel Pipe.

PART 3 EXECUTION

3.1 PROTECTION

A. Metal pipe and all fittings shall be handle with care to prevent damage.

B. Pipe shall be stored on a relatively flat surface to insure that the barrel is evenly supported.

C. Pipe shall be covered with an opaque material to protect it from exposure when it is in outside storage for a period of 15 days or longer unless it has been specificially formulated to withstand unltraviolet radiation.

3.2 JOINING PIPE

A. Pipe ends shall be cut square, and recoated in accordance with AASHTO M243.

B. Pipe joints shall conform to the details shown on the drawing and shall be watertight.

C. Pipe shall be joined as recommend by the manufacturer and joints shall be capable of withstanding a working pressure that is equal to or greater than for the pipe.

3.3 ACCEPTANCE

A. Pipe distorted more than 5% of normal dimension, ruptured, or broken shall be replaced.

3.4 BASIS OF PAYMENT

02500(01) 54” BC CMP Riser......................................Linear foot(LF)

SECTION 02920

SEEDING

PART 1 GENERAL

1.1 WORK INCLUDED

A.

This work shall consist of preparing seedbeds and furnishing and placing required seed, fertilizer, agricultural limestone and mulch.

1.2 REFERENCES

FS-FP03 Federal Specification

Section 713.02 Agricultural Limestone

Section 713.03 Fertilizer

Section 713.04 Seed

Section 713.05 Mulch

1.3 CERTIFICATIONS

A.

Contractor shall provide weight tickets if straw hay is for mulch.

B.

Certification for seed shall meet the requirements of Section 2.1 SEED.

PART 2 PRODUCTS

2.1 SEED

A.

All seeding is to be performed in accordance with the following list of seasonal schedule and rates of application:

October 1 - February 14

Unhulled Bermuda

65 pounds per acre

Grain Rye

10 pounds per acre

Crimson Clover

February 15 - March 31

Grain Rye

Hulled Bermuda

45 pounds per acre

Carpet Grass

30 pounds per acre

April 1 - September 30

Browntop Millet

Hulled Bermuda

45 pounds per acre

B.

Seed shall be furnished separately or in mixture in unopened containers with (1) seed name, (2) lot number, (3) net weight, (4) % of purity and germination and (5) % of maximum weed seed content marked for each kind of seed. Bag tag figures shall be evidence of purity and germination. No seed will be accepted with a date of test of more than 9 months prior to the date of delivery to the site.

C.

Seed, which has become wet, moldy or otherwise damaged in transit or storage will not be accepted. The percent of noxious weed seed allowable shall be as defined in the current state laws relating to agricultural seed.

2.2 FERTILIZER

A.

Fertilizer shall be a standard commercial grade with a chemical analysis of 10% Nitrogen, 10% Phosphorous and 10% Potassium.

B.

Fertilizer shall be furnished in new, clean, sealed containers with the name, weight and guaranteed analysis of contents clearly marked.

C.

If fertilizer is supplied from bulk storage, the Contractor shall furnish a supplier's certification of analysis and weight.

2.3 AGRICULTURAL LIMESTONE

A.

The agricultural limestone shall be a calcic or dolomitic ground limestone containing not less than 85% of total carbonates.

2.4 MULCH

A.

Straw hay shall be of approved herbaceous mowings free of noxious weeds, mold or other objectionable material. Straw hay shall be air-dried, fairly light in color and shall not be musty, caked or otherwise of low quality.

B.

Mulch for hydraulic planting shall be Weyerhauser Silva-Blend 50/50 or equal.

PART 3 EXECUTION

3.1 PREPARATION

A.

Areas to be seeded shall be finished as required by the drawings and approved by the C.O.R. The surface soil shall be in a roughened condition favorable for germination and growth.

B.

Rocks larger than 6 inches, trash, weeds and other debris that will interfere with seeding or maintenance shall be removed.

3.2 SEEDING

A.

Limestone shall be uniformly applied at the rate of 1.5 tons per acre either prior to or after the soil has been prepared.

B.

Fertilizer shall be applied at the rate of 500 lbs. Per acre. Fertilizer shall be uniformly incorporated into the soil either alone or with seed.

C.

On the side slopes and other areas not accessible to powered machinery, seed may be either broadcast by hand or applied with the fertilizer by a hydroseeder. On all other areas, the seed may be either drilled to a depth of 1/4 to 1/2 inch with a "no till" drill, broadcast and rolled with a packer, seeded with a cultipacker seeder, applied by a hydroseeder, or by a combination of the methods.

D.

After seeding and fertilizing are completed, mulch shall be uniformly applied at the rate of 4000 lbs. per acre. Mulch shall be applied not later than 2 days after seeding has been performed. For hydroseeding use 1200 to 1500 pounds of mulch per acre with an organic tackifier.

E.

Straw mulch materials shall be stabilized by the use of a disk or crimper. Disking shall be to a depth of 4 - 6 inches.

3.3 PROTECTION

A.

The Contractor shall be responsible for protecting and caring for seeded areas until final acceptance of the work. The Contractor shall repair all damage to seeded areas caused by construction operations without additional compensation.

3.4 BASIS OF PAYMENT

NOT A PAY ITEM. Incidental to other work.

SECTION 03300

CAST-IN-PLACE CONCRETE

PART 1 GENERAL

1.1 WORK INCLUDED

A. This work shall consist of placing a reinforced conrete support structure at the base of the 54” Bituminous-Coated Corrugated Steel Pipe riser assembly.

1.2 REFERENCES

A. The latest editions of the following specifications and recommended practices shall govern:

a. ACI 301 Specifications for Structural Concrete for Buildings

b. ACI 306 Recommended Practice for Winter Concrete

c. ACI 305 Recommended Practice for Hot Weather Concrete

d. ASTM C 270-10 Standard Specification for Mortar for Unit Masonary

e. FS-FP03 Federal Specification Section 712.05 Mortar for Masonry Beds and Joints

B. ASTM A615 Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete Reinforcement

PART 2 PRODUCTS

2.1 CONCRETE

A. Concrete used shall comply with one of the following methods:

1. Method A: Concrete shall be made using a dry, pre-proportioned, blended and bagged mix meeting the requirement of ASTM C 387 and mixed at the jobsite in accordance with the manfacturer’s recommendations.

2. Method B: The Contractor shall submit for approval the following information:

a) The type , grading, and source of aggregate.

b) Type and source of cement, blended cement, or fly ash.

c) Proposed scale.

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

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

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

E. Additives or air entrainment agents shall comply with ASTM C-260.

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

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

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

I. The design of the concrete mixture shall be the responsibility of the contractor.

2.2 REINFORCEMENT

A. Reinforcing bar shall be deformed conforming to ASTM A 615, 60 ksi yield grade unfinished and be of the size and configuration shown on the drawings.

B. Reinforcement rebar shall conform to the sizes and spacings as shown.

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

PART 3 EXECUTION

3.1 CONCRETE

A. "Ready-Mixed Concrete" may be employed if the time interval between mixing at the plant and discharge into the form does not exceed 1-1/2 hours. The batch ticket shall show the time the mix was batched.

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

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

D. No concrete with a temperature above 90o F shall be placed.

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

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

G. No concrete shall be freely dropped more than five(5) feet.

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

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

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

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

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

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

N. Testing

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

2. The Contractor is responsible for making and testing cylinders from the concrete being incorporated in the project.

3. Slump testing will be performed by the Contractor in accordance with ASTM Standard Method C143. Slump shall not exceed 3" for vibrated concrete or 5" for nonvibrated concrete.

3.1 REINFORCEMENT

A. Cutting and bending of reinforcing bars shall be in accordance with the Manual of Standard Practices published by the Concrete Reinforcing Steel Institute (CRSI).

B. Reinforcing steel shall be placed as SHOWN ON THE DRAWING and shall be firmly and securely held in position by wiring at intersections and splices, and using precast mortar blocks or spacers, metal hanger, supporting wires, and other devices approved by the COR of sufficient strength to resist crushing under applied loads.

3.2 BASIS OF PAYMENT

03300(01) Cast-in-Place Concrete...................................Cubic Yard