01 74 19.10.pdf

Charleroi Locks and Dam - Upper and Lower Guard Walls

SECTION TABLE OF CONTENTS

DIVISION 01 - GENERAL REQUIREMENTS

SECTION 01 74 19.10

OPERATION OF DISPOSAL SITE

PART 1 GENERAL

1.1 SUMMARY OF WORK

1.2 REFERENCES

1.3 GENERAL INFORMATION

1.3.1 Location

1.3.2 Description of Existing Site

1.4 SUBMITTALS

1.5 OPERATION OF DISPOSAL SITE

PART 2 PRODUCTS (Not Used)

PART 3 EXECUTION

3.1 EROSION AND SEDIMENT CONTROLS

3.2 CLEARING

3.3 OFF-LOADING AREA

3.4 HAUL ROADS

3.4.1 Maintenance of Haul Roads

3.5 TRAFFIC CONTROL

3.5.1 General

3.5.2 Traffic Control On Government Property

3.6 RAILROAD BRIDGE MODIFICATIONS

3.6.1 Construction Loading

3.7 CLEANOUT OF SEDIMENTATION BASINS

3.8 SITE RESTORATION AND CLEAN UP

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SECTION 01 74 19.10 Page 1 W911WN-09-B-0004 Revised by Amendment No. 0003

SECTION 01 74 19.10

OPERATION OF DISPOSAL SITE

PART 1 GENERAL

1.1 SUMMARY OF WORK

The work covered under this Section of the Specifications covers the construction of the Government-furnished disposal site. Disposal requirements at the Government-furnished disposal site are covered in Section 02 42 00 DISPOSAL OF MATERIALS.

1.2 REFERENCES

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.

PENNSYLVANIA DEPARTMENT OF TRANSPORTATION (PDT)

PDT 408 (2007) Specifications

PDT 72M (2004) Roadway Construction Standards

1.3 GENERAL INFORMATION

The Government furnished disposal site has been prepared for initial offloading and placement of materials, including the installation of erosion and sedimentation controls, construction of off-loading facilities, haul road construction, modifications to existing bridge, security measures and other incidental work. The Contractor will be responsible for installation of traffic control measures and construction of additional erosion and sedimentation controls as material is placed in the area. The Contractor shall also be responsible for disposing of the material in the temporary stockpile at the Off-Loading Area to the Upland Disposal Site.

1.3.1 Location

The Government furnished site (Victory Hollow Disposal Site) is located in the Victory Hills area of Washington County, 34.5 river miles upstream of the Point in Pittsburgh, or approximately 7 miles downstream of Charleroi Locks and Dam.

1.3.2 Description of Existing Site

The Victory Hollow disposal site lies along the left bank (descending) of the Monongahela river. PA State Route 837 traverses the site, separating the site into two areas: an "Off-Loading Area" and an "Upland Disposal Site". Crossing State Route 837 is not permitted.

An existing unused railroad overpass crosses State Route 837, and connects the Off-Loading Area haul road to the Upland Disposal Area haul roads. The unused railroad overpass shall be used for conveying materials to the Upland Disposal Site.

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The Off-Loading Area has been prepared for off-loading materials. Erosion and sedimentation control features and an access road have been constructed.

The Upland Disposal Site was previously used for the disposal of slag materials, and has been developed for disposal of river sediments. No topsoil will be required to be removed. Only the footprint of the disposal area utilized in the Upland Disposal Site shall be cleared of trees and woody vegetation to ground level, if necessary. However, grubbing operations will not be required, and all stumps shall be left in place.

Trees cleared from the Upland Disposal Site shall be chipped and placed in Stockpile Area No. 1.

1.4 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government. Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-01 Preconstruction Submittals

Sediment Basin Cleaning Plan; G, RE

Contractor's proposed plans for cleaning the sediment basins, including equipment and methods to be used.

SD-02 Shop Drawings

Traffic Control; G, RE

Contractor's proposed plans for maintaining and protecting traffic on Government property.

1.5 OPERATION OF DISPOSAL SITE

The Contractor shall be responsible for operation and maintenance of the disposal site for disposal of materials under this contract.

PART 2 PRODUCTS (Not Used)

PART 3 EXECUTION

3.1 EROSION AND SEDIMENT CONTROLS

Unless otherwise shown, erosion and sediment control measures shall be maintained in accordance with Section 01 57 23.00 10 STORMWATER POLLUTION

PREVENTION MEASURES.

3.2 CLEARING

Clearing shall be limited to the footprint of the area utilized for disposal of materials under this contract and shall be conducted with the approval of the Contracting Officer. Clearing shall consist of the removal of trees, brush, other vegetation, objectionable material, rubbish, and junk. The trees, brush and vegetation shall be chipped and placed in Stockpile Area No. 1 or as directed by the Contracting Officer.

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3.3 OFF-LOADING AREA

Erosion and sediment controls have been installed; the sedimentation pond has been constructed; haul roads and security gates have been constructed, and staging area berms have been constructed. The Contractor shall be responsible for maintaining these facilities, including making required repairs and improvements to the dock.

3.4 HAUL ROADS

Except as otherwise specified, directed or approved, the Contractor shall be responsible for maintaining the access and haul roads that have been constructed for the performance of the work. The Government has obtained specific easements for these roads, and the limits of the work areas are shown on the drawings. Based on the site conditions and equipment that will utilize the roads, the Contractor shall determine the extent of work that must be performed to provide suitable, safe driving conditions from the haul roads to the various work areas. It will be the Contractor's responsibility to determine whether any grading or subgrade stabilization and preparation will be necessary. The Contractor shall provide and maintain a system of dust abatement in accordance with Section 01 57 20.00 104 ENVIRONMENTAL PROTECTION, paragraph PROTECTION OF AIR

RESOURCES.

3.4.1 Maintenance of Haul Roads

The Contractor shall provide labor, equipment and materials to maintain the roads in a safe drivable condition, free of excessive rutting. Aggregate surfacing shall be replaced and regraded as areas become worn and rutted.

The Contractor shall immediately correct any areas were rutting exceeds 3 inches in depth, as measured relative to adjacent undisturbed areas.

3.5 TRAFFIC CONTROL

3.5.1 General

Maintenance and protection of traffic on Government owned or controlled property and public roads shall conform to the applicable provisions of PDT 408, Section 900, and PDT 72M. The Contractor shall be responsible for developing all proposed plans for maintenance and protection of traffic, and all such plans shall be submitted for review and approval. See also Section 01 30 00.10 GENERAL REQUIREMENTS, paragraph "MAINTENANCE AND

PROTECTION OF VEHICULAR TRAFFIC".

3.5.2 Traffic Control On Government Property

The haul roads consist of one-way and two-way roads as indicated. The Contractor shall install traffic signs of the types indicated and at the locations shown on the drawings. The abandoned railroad bridge shall be used for transport of material from the Off-Loading Area to the Upland Disposal Site, and is also be used for vehicles returning from the disposal site to the Off-Loading Area. The bridge is only wide enough to accommodate one-way traffic. The Contractor shall be responsible for designing and installing traffic signs and automatic traffic control devices to control and protect traffic as indicated on the drawings.

Traffic signals shall be in accordance with the applicable provisions of PDT 408, Section 950 and PDT 72M. The Contractor shall be responsible for arranging and providing all required electrical service for traffic lights.

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3.6 RAILROAD BRIDGE MODIFICATIONS

The abandoned railroad bridge spans State Route 837 shall be used for transporting materials from the Off-Loading Area to the Upland Disposal Site. The bridge consists of two spans: an approach span, of deck plate girder design, constructed of steel shapes and plates with concrete deck;

and a through-truss main span constructed of steel shapes and plates with concrete deck. An expansion plate has been installed as shown on the drawings to connect the bridge approach slab to the main slab. Guiderail has been installed on the bridge approach span as shown. Bituminous pavement has been placed on the bridge decks to a thickness of approximately four inches.

3.6.1 Construction Loading

The bridge spans have been inspected and analyzed for construction loading.

The bridge designs were verified to be adequate for a special loading, consisting of two CAT D400E off-road trucks, 150 Kips loaded weight (25K/wheel X 6 wheels), each truck spaced 20 feet apart, as shown on the drawings. Details of member sizes and dimensions for each span are shown on the drawings for the Contractor's information. If the Contractor proposes to use a different loading case than shown, he shall submit design data and calculations signed and stamped by a Professional Engineer, licensed to practice in the Commonwealth of Pennsylvania, to verify the structural adequacy of the bridge spans for the proposed loading case. The Contractor shall field verify sizes and dimensions of all bridge members, and shall notify the Contracting Officer of any discrepancies.

3.7 CLEANOUT OF SEDIMENTATION BASINS

When the depth of solids in Sedimentation Basins Nos. 1 or 2 reaches 1 foot, or as otherwise directed by the Contracting Officer, the sedimentation basin shall be cleaned. The methods and equipment to be used for removal of the sediment deposits shall be at the discretion of the Contractor. However, methods and equipment that are selected shall not damage the sediment basin lining. The sediment deposits may be removed with water in the basin or, at the option of the Contractor, the water can be pumped from the basin to be cleaned. If the Contractor elects to pump the water out of the basin, the Contractor shall pump the water thru a pumped silt control system as specified in Section 01 57 20.00 10 ENVIRONMENTAL PROTECTION. The Contractor shall submit a Sediment Basin Cleaning Plan for approval prior to commencing the work.

The sediment basins shall be cleaned to the extent that at least 50 percent of the liner below the skimmer level is visible and no areas of remaining sediment have a depth greater than one-half inch.

The sediment deposits removed from the basins shall be placed in the Sediment Dewatering Area until sufficiently dried for disposal in the Upland Disposal Site as specified in Section 02 42 00 DISPOSAL OF MATERIALS. The Contractor is responsible for conducting all testing of sedimentation basin material prior to removal in accordance with the permit requirements.

3.8 SITE RESTORATION AND CLEAN UP

After completion of disposal operations at any area, that area shall be immediately seeded and mulched in accordance with Section 32 92 19 SEEDING.

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