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NEW YORK STATE DEPARTMENT OF TRANSPORTATION Sections 200 - 599 STANDARD SPECIFICATIONS (USC) January 1, 202 4 Volume 2 206-5.05 Test Pits. The unit price bid for this work shall include the cost of furnishing all labor, materials and equipment necessary to satisfactorily excavate and backfill the test pit and replace any pavement, shoulder and sidewalk courses, subcourses, curbs, drives, lawn s and other top surfaces required to complete the work. Payment will be made under: Item No. Item Pay Unit 206.01 Structure Excavation Cubic Yard 206.0201 Trench and Culvert Excavation Cubic Yard 206.03 Conduit Excavation and Backfill including Surface Restoration Foot 206.05 Test Pit Excavation Each SECTION 207 - GEOSYNTHETICS
207-1 Description .
207-1.01 Geotextiles. The work shall consist of furnishing and installing approved Geotextile of the
Class and Type indicated, at the locations, and in the manner shown on the plans or as directed by the Engineer, in writing, prior to performing the work.
207-1.02 Geomembranes. The work shall consist of furnishing and installing approved Geomembrane ,
includ ing the preparation of the surface upon which the Geomembrane is placed, at the locations and in the manner shown on the plans or as directed by the Engineer, in writing, prior to performing the work.
207-1.03 Prefabricated Composite Drains for Structures. The work shall consist of furnishing and
installing an approved Prefabricated Composite Structural Drain (PCSD) or Prefabricated Composite Integral Abutment Drain (PCIAD) as specified at the location (s) shown on the contract documents or as directed by the Engineer, in writing, prior to performing the work. Prior to installation, the Contractor shall furnish the Engineer with copies of the manufacturer’s literature with details and installation requirements for the PCSD or PCIAD. If not included in the manufacturer’s literature, a letter identifying the geote xtile wrap shall also be provided to the Engineer.
207-2 MATERIALS. Materials shall meet the requirements specified in the following subsections of
Section 700 – Materials. Geotextiles §737 -01 Geotextile Bedding §737 -01 A. Geotextile Separation §737 -01 B. Geotextile Drainage §737 -01 C. Geotextile Slope Protection §737 -01 D. Geotextile Stabilization §737 -01 E. Turbidity Curtain §737 -01 F. Silt Fence §737 -01 G. Geomembranes §737 -02 Prefabricated Composite Structural Drains §737 -04 Prefabricated Composite Integral Abutment Drains §737 -05 Materials shall be subject to the Department’s Quality Assurance (QA) program outlined in Section 737.
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NEW YORK STATE DEPARTMENT OF TRANSPORTATION Sections 200 - 599 STANDARD SPECIFICATIONS (USC) January 1, 202 4 Volume 2 Adhesives used for joining geotextiles shall be fast -tacking, not be detrimental to the performance, lifespan or function of the geotextile, and c reate a bond strong enough to meet AASHTO M288 requirements for seam efficiency.
207-3 Construction Details .
207-3.01 Geotextiles .
A.General. The Geotextiles shall be protected from exposure to sunlight during transport and storage. After placement, the Geotextile shall not be left uncovered for more than two (2) weeks. Traffic or construction equipment will not be permitted directly on the Geotextile. Geotextiles may be joined by sewing, using adhesive or overlapping. Sewn seams shall be lapped a minimum of 4 in. and double sewn. The thread used to sew the seam shall be nylon or polypropylene. Geotextiles that are joined using adhesive shall be lapped a minimum of 4 in. Overlapped seams shall have a minimum overlap of 20 in. except when placed under water where the overlap shall be a minimum of 3 ft. All seams shall be su bject to the approval of the Engineer. Geotextile which becomes torn or damaged due to the Contractor’s operations shall be replaced or patched at no cost to the State. The patch shall extend 3 ft. beyond the perimeter of the tear or damage.
B.Bedding and Slope Protection. The Geotextile shall be placed and anchored on a prepared surface approved by the Engineer. The Geotextile shall be laid loosely but in intimate contact with the soil so that placement of the overlying materials will not stretch or tear the Geotextile. Whe re Geotextile is placed above water, the backfill placement shall begin at the toe and proceed up the slope. Where Geotextile is placed under water, the long dimension (provided that the width dimension is wider than the channel width) shall be placed parallel to the direction of flow. If the width dimension is not wider than the channel width, the long dimension shall be placed perpendicular to the direction of flow. Successive Geotextile sheets shall be overlapped so that the upstream sheet is placed over the downstream sheet. As the Geotextile is placed under water, the backfill material shall be placed on it to the required thickness. The Geotextile placement shall not progress more than 50 ft. ahead of the backfill placement. Rip-rap, stone filling (Heavy) or stone filling (Medium) shall not be dropped onto the Geotextile from a height greater than 1 ft. Slope protection and smaller sizes of stone filling shall not be dropped onto the Geotextile from a height exceeding 3 ft.
C.Separation and Stabilization. The Geotextile shall be placed as directed by the Engineer. The Geotextile shall be laid loosely but in intimate contact with the soil so that placement of the overlying material will not stretch or tear the Geotextile.
D.Drainage. The Geotextile shall be placed to conform loosely to the shape of the trench. After placing the filter material, the Geotextile shall be folded over the top of the filter material to produce a minimum overlap of 12 in. The Geotextile shall then be covered with the subsequent course.
207-3.02 Geomembranes. The Geomembrane shall be protected during transport and storage. The
surface upon which the Geomembrane is to be placed shall be within reasonable conformity to the proposed grade. Traffic or construction equipment will not be permitted directly on the Geo membrane. Care shall be exercised by workers when walking or working on the Geomembrane. Seams shall be sealed as per the manufacturer's recommendations and to the satisfaction of the Engineer. The edges of the Geomembrane shall be secured in the manner shown on the contract plans or as directed by the Engineer.
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NEW YORK STATE DEPARTMENT OF TRANSPORTATION Sections 200 - 599 STANDARD SPECIFICATIONS (USC) January 1, 202 4 Volume 2 Geomembrane which becomes torn or damaged shall be replaced or patched as ordered by the Engineer. The patch shall extend 3 ft. beyond the perimeter of the tear or damage and the seams shall be approved by the Engineer.
207-3.03 Prefabricated Composite Drains for Structures. The Contractor shall install the drain in
conformance with the manufacturer’s installation procedures. The drain shall be installed so that the backfill, when placed, will be in contact with the geotextile and forms a continuous drainage layer without interruption within the drain’s plane. In installations where concrete is to be poured against the prefabricated composite drain, only drains with impermeable cores will be allowed. At all locations, a positive outlet for the water in the drain shall be provided. This may involve making a hole in the core at the weep hole locations for approved drains with an impermeable core. Do not puncture the geotextile. Any damaged geotextile shall be repaired. Adhesive shall be applied to the wall surface, and not directly to the drain. During all periods of shipment and storage, the drain shall be wrapped and protected from direct exposure to sunlight, mud, dirt and debris. Care shall be exercised while backfilling to prevent damage to the drain. Repairs or replacements of drain damaged by construction operations shall be performed, as directed by the Engineer, at no cost to the State.
207-4 Method of Measurement .
207-4.01 Geotextiles .
A.General. The quantity of Geotextile will be the number of square yards computed from the payment lines indicated in the contract documents. Measurement will not be made for Geotextile used for repairs, seams, or overlaps. If taken, the amount of quality assurance samples will be added to this quantity.
B.Drainage. The quantity of Geotextile will be measured in area based on the theoretical perimeter determined from the typical section indicated in the contract documents.
207-4.02 Geomembranes. The quantity of Geomembrane will be the number of square yards c omputed
from the payment lines indicated in the contract documents. Measurement will not be made for Geomembranes used for repairs, seams, or overlaps.
207-4.03 Prefabricated Composite Drains for Structures. The quantity of PCSD or PCIAD will be
measured in square yards installed computed from the payment lines indicated in the contract documents.
207-5 Basis of Payment .
207-5.01 Geotextiles. The unit price bid shall include the cost of furnishing all labor, equipment, and
materials necessary to complete the work, including the cost of preparing the surface upon which the Geotextile is placed. No payment will be made for replacement or repairs.
207-5.02 Geomembranes. The unit price bid shall include the cost of furnishing all labor, materials, and
equipment necessary to satisfactorily complete the work, i ncluding the cost of preparing the surface upon which the Geomembrane is placed and securing the edges of the Geomembrane. No payment will be made for replacement or repairs.
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NEW YORK STATE DEPARTMENT OF TRANSPORTATION Sections 200 - 599 STANDARD SPECIFICATIONS (USC) January 1, 202 4 Volume 2 207-5.03 Prefabricated Composite Drains for Structures. The unit price bid shall include the cost of furnishing all labor, equipment, and material necessary to complete the work. No payment will be made for repairs or replacement. Payment will be made under: Item No. Item Pay Unit 207.20 Geotextile Bedding Square Yard 207.21 Geotextile Separation Square Yard 207.22 Geotextile Drainage Square Yard 207.23 Geotextile Slope Protection Square Yard 207.24 Geotextile Stabilization Square Yard 207.25 Geomembrane Square Yard 207.26 Prefabricated Composite Structural Drain Square Yard 207.27 Prefabricated Composite Integral Abutment Drain Square Yard SECTION 208 - STORMWATER MANAGEMENT PRACTICES (Last Revised May 2022)
208-1 DESCRIPTION . The work shall include furnishing, installing, maintaining, and cleaning
stormwater management practices, in accordance with the contract documents and as directed by the Engineer.
208-1.01 General .
A.Definitions .
1.Stormwater Management Practices (SMP) . SMPs include structural, soil and vegetative practices that are acceptable for water quality treatment and water quantity control and meet stormwater management performance criteria described in the New York State Stormwater Management Design Manual (issued by the New York State Department of Environmental Conservation).
2.Stormwater Treatment Device (SWTD) . A SWTD is a commercially available Stormwater Management product that uses hydrodynamic action, velocity reduction, sediment settling and/or filtering to separate suspended solids from stormwater. SWTDs are installed as part of a stormwater treatment system consisting of one or more SWTDs and all required pipes, such as connection, inlet, bypass and outlet. SWTDs are used alone or in a series with other SMPs.
3.Water Quality Treatment. SMPs are implemented to improve water quality by capturing and treating runoff to remove pollutants from small, frequent storm events that tend to contain higher pollutant levels.
4.Water Quantity Control. SMPs are designed to attenuate or reduce peak flows from storm events to the pre -developed levels to prevent channel erosion, maintain pre -developed hydrology and hydraulics, and often also provide groundwater recharge.
5.Maintenance . Maintenance shall include inspection, repair, and upkeep of stormwater management practices.
6.Cleaning . Cleaning shall include inspection, removal and disposal of trash, debris,
Source: New York Standard Specifications, 2024 Edition. Pages 63–65 of 1,264.