J5 Tomahawk Trail Specs.pdf

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GREAT AMERICAN OUTDOORS ACT (GAOA)

KAWISHIWI RANGER DISTRICT TRAILS IMPROVMENTS

TOMAHAWK TRAIL AT SOUTH FARM LAKE

CULVERT REPLACEMENT

SUPPLEMENTAL SPECIFICATIONS

Table of Contents

Preface

Delete all but the first paragraph and add the following:

The Forest Service, US Department of Agriculture has adopted FP-14 for construction of National Forest System Roads and Trails. The specifications can be obtained from the Federal Highway Administration Home Page on-line at: http://flh.fhwa.dot.gov/resources/pse/specs/

The Minnesota Department of Transportation Standard Specifications for Construction are included by reference. Requirements contained in these specifications are hereby made a part of this solicitation and any resultant contract where “MNDOT” is used to reference them in these Drawings and/or Supplemental Specifications. The specifications can be obtained on-line at:

http://www.dot.state.mn.us/pre-letting/spec/index.html

101 - Terms ̧Format ̧and Definitions

Add the following paragraph to Subsection 101.01:

101.01 Meaning of Terms.

Preface 1 Division 100 – General Requirements 1 157 Soil Erosion and Sedimentation Control 9 209 Structure Excavation and Backfill 211 Roadway Obliteration 10 302 Minor Crushed Aggregate 10 303 Roadway Reconditioning 11 602 Culverts and Drains 11 703 Materials: Aggregate (Gravel) 12 704 Materials: Soil (Bedding/Backfill) 12 705 Materials: Rock (Barrier Rocks) 13 707 Materials: Metal Pipe (Culverts) 13 713 Materials: Roadside Improvement Material (Silt Fence, Blanket)

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Delete all references to the TAR (Transportation Acquisition Regulations) in the specifications.

Add the following to Subsection 101.03:

101.03 Abbreviations.

(a) Acronyms.

AGAR — Agriculture Acquisition Regulations AFPA — American Forest and Paper Association FSAR — Forest Service Acquisition Regulations MSHA — Mine Safety and Health Administration NESC — National Electrical Safety Code WCLIB — West Coast Lumber Inspection Bureau

(f) Miscellaneous unit abbreviations.

MP — milepost location ppm — parts per million volume STA station location

Make the following changes to Subsection 101.04:

101.04 Definitions.

Delete these definitions and replace the following:

Bid Schedule — The Schedule of Items.

Bridge — A structure, including supports, erected over a depression or an obstruction such as water along a road, a trail, or a railway and having a deck for carrying traffic or other loads.

Contractor — The individual or legal entity contracting with the Government for performance of prescribed work. In a timber sale contract, the contractor is the “Purchaser”.

Culvert — Any structure with a bottom, regardless of fill depth, depth of invert burial, or presence of horizontal driving surface, or any bottomless (natural channel) structure with footings that will not have wheel loads in direct contact with the top of the structure.

Drawings — (Public Works Contracts) Design sheets or fabrication, erection, or construction details submitted to the CO by the Contractor according to FAR Clause 52.236-21 Specifications and Drawings for Construction. Also refers to submissions and submittals.

Notice to Proceed — (Public Works Contracts) Written notice to the Contractor to begin the contract work.

Right-of-Way — A general term denoting (1) the privilege to pass over land in some particular line (including easement, lease, permit, or license to occupy, use, or traverse public or private lands), or (2) Real property necessary for the project, including roadway, buffer areas, access, and drainage areas.

Solicitation—(Public Works Contracts) The complete assembly of documents (whether attached or incorporated by reference) furnished to prospective bidders.

Add the following definitions:

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Adjustment in Contract Price — “Equitable adjustment,” as used in the Federal Acquisition Regulations, or “construction cost adjustment,” as used in the Timber Sale Contract, as applicable.

Change — “Change” means “change order” as used in the Federal Acquisition Regulations, or “design change” as used in the Timber Sale Contract.

Forest Service — The United States of America, acting through the Forest Service, U.S.

Department of Agriculture.

Neat Line — A line defining the proposed or specified limits of an excavation or structure.

Pioneer Road — Temporary construction access built along the route of the project.

Purchaser — The individual, partnership, joint venture, or corporation contracting with the Government under the terms of a Timber Sale Contract and acting independently or through agents, employees, or subcontractors.

Protected Streamcourse — A drainage shown on the plans or timber sale area map that requires designated mitigation measures.

Road Order — An order affecting and controlling traffic on roads under Forest Service jurisdiction. Road Orders are issued by a designated Forest Officer under the authorities of 36 CFR, part 260.

Shop Drawings — (Timber and Stewardship Contracts) Referred to as “Drawings” in FP-14, include drawings, diagrams, layouts, schematics, descriptive literature, illustrations, lists or tables, performance and test data, and similar materials furnished by Purchaser to explain in detail specific portions of the work required by the contract.

Utilization Standards — The minimum size and percent soundness of trees described in Public Works contract specifications or Timber Sale and IRTC contract provisions to determine merchantable timber.

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Add Figure 101-1—Illustration of road structure terms:

Figure 101-1—Illustration of road structure terms.

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102 - Bid ̧Award¸ and Execution of Contract

Delete Section 102 in its entirety.

Delete Section 102.

103 - Scope of Work

Delete all of Section 103 except Subsection 103.01 Intent of Contract.

Delete Subsections 103.02, 103.03, 103.04, 103.05.

104 - Control of Work

Delete Subsections 104.01, 104.02, and 104.04.

Delete Subsections 104.01, 104.02, 104.04.

Add the following to Subsection 104.03:

104.03 Specifications and Drawings

Submittals/Notifications Required.

Submittals of any type shall be delivered to the COR via email, with a numbered and dated Submittal form to allow tracking and discussion of specific submittal documents.

The following table is a summary of the Submittals and Notifications required for this contract. This summary is intended as a convenience and is not an all-inclusive summary. Other Submittals and/or Notifications may be required as shown in the Drawings and Specifications.

Submittals and Notifications:

The following required items need to be submitted according to the schedule shown to prevent delays or stoppages of work.

ITEM ACTION SCHEDULE

Construction Schedule For information 2 weeks before mobilization Gopher State ticket number and list of utilities in area For record* Before excavation Hazardous Spill Plan For record* Before beginning work List of subcontractors and suppliers, SF1413 For record* Within 14 days of contract award

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Traffic Control and Signage Plan Approval by CO 7 days before mobilization

Traffic Closure Request Approval by CO 14 days before closure

Dewatering Plan Approval by CO 7 days before mobilization

Dewatering Material Product Data Approval by CO Prior to delivery Turbidity Curtain Product Data Approval by CO Prior to delivery Culvert Product Data Approval by CO Prior to delivery Aggregate Material Gradations Approval by CO Prior to delivery Erosion Control Blanket Product

Data Approval by CO Prior to delivery

Seed Mixture Product Data Approval by CO Prior to delivery Payroll reports certified and signed by Contractor (inc. those for subcontractors)

Approval by CO Prior to progress or final payment

* "For record" assumes that the submitted Item meets the Specifications as written.

Other "equal" products require review and approval by the CO, and may take longer to review.

Add the following to Subsection 104.06:

104.06 Use of Roads by Contractor.

The Contractor is authorized to use roads and trails under the jurisdiction of the Forest Service for all activities necessary to complete this contract, subject to the limitations and authorizations designated in the Road Order(s) or described in the contract, when such use will not damage the roads or national forest resources, and when traffic can be accommodated safely.

Any damage to any improvement or resource that is a result of the contractor’s work on this contract shall be repaired at the contractor’s expense. Improvements and resources include such things as roads, trails, signs, bridges, drainage structures, and significant vegetation such as large trees or protected plants.

105 - Control of Material

105.05 Use of Material Found in the Work.

Delete 105.05 (a) and (b) and the last sentence of the second paragraph and substitute the following:

Materials produced or processed from Government lands in excess of the quantities required for performance of this contract are the property of the Government. Place excess material safely at government-approved location, at no additional cost to government.

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106 - Acceptance of Work

Delete Subsection 106.01 and replace with the following:

106.01 Conformity with Contract Requirements.

Follow the requirements of FAR Clause 52.246-12 Inspection of Construction.

References to standard test methods of AASHTO, ASTM, GSA, and other recognized standard authorities refer to the methods in effect on the date of solicitation for bids.

Perform all work to the lines, grades, cross-sections, dimensions, and processes or material requirements shown on the plans or specified in the contract.

Incorporate manufactured materials into the work according to the manufacturer’s recommendations or to these specifications, whichever is more strict.

Plan dimensions and contract specification values are the values to be strived for and complied with as the design values from which any deviations are allowed. Perform work and provide material that is uniform in character and reasonably close to the prescribed value or within the specified tolerance range. The purpose of a tolerance range is to accommodate occasional minor variations from the median zone that are unavoidable for practical reasons.

When standard manufactured items are specified (such as fence, wire, plates, rolled shapes, pipe conduits, etc., that are identified by gauge, unit mass, section dimensions, etc.), the identification will be considered to be nominal masses or dimensions. Unless specific contract tolerances are noted, established manufacturing tolerances will be accepted.

The Government may inspect, sample, or test all work at any time before final acceptance of the project. When the Government tests work, copies of test reports are furnished to the Contractor upon request. Government tests may or may not be performed at the work site. If Contractor testing and inspection is verified by the Government, the Contractor’s results may be used by the Government to evaluate work for acceptance. Do not rely on the availability of Government test results for process control.

Acceptable work conforming to the contract will be paid for at the contract unit bid price. Four methods of determining conformity and accepting work are described in Subsections 106.02 to

106.05 inclusive. The primary method of acceptance is specified in each Section of work.

However, work may be rejected at any time it is found by any of the methods not to comply with the contract.

Remove, repair, or replace work that does not conform to the contract, or to prevailing industry standards where no specific contract requirements are noted. Removing, repairing, or replacing work; providing temporary traffic control; and any other related work to accomplish conformity will be at no cost to the Government.

(a) Disputing Government test results. If the accuracy of Government test results is disputed, promptly inform the CO. If the dispute is unresolved after reasonable steps are taken to resolve the dispute, further evaluation may be obtained by written request. Include a narrative describing the dispute and a proposed resolution protocol that addresses the following:

Sampling method;

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Number of samples;

Sample transport;

Test procedures;

Testing laboratories;

Reporting;

Estimated time and costs; and Validation process.

If the evaluation requires additional sampling or testing be performed, mutually agree with the Government on witnessing procedures and on sampling and testing by a third party laboratory.

Use a third party laboratory accredited by the AASHTO accreditation program. Provide proof of the laboratory’s accreditation for the test procedures to be used. Do not use the same laboratory that produced the disputed Government test results or that produced the test results used as a basis for the dispute.

The CO will review the proposed resolution protocol and may modify it before final approval and execution.

The Government will use the approved resolution protocol test results to determine the validity of the disputed testing. If the Government test results are validated, the Contractor will be responsible for all costs associated with developing and performing the resolution protocol. If the Government test results are not validated, the Government will be responsible for all costs associated with developing and performing the resolution protocol. If the validity of the Government test results cannot be determined, the Contractor and Government will equally share all costs associated with developing and carrying out the resolution protocol.

(b) Alternatives to removing and replacing non-conforming work. As an alternative to removal and replacement, the Contractor may submit a written request to:

1. Have the work accepted at a reduced price; or

2. Be given permission to perform corrective measures to bring the work into conformity.

The request must contain supporting rationale and documentation. Include references or data justifying the proposal based on an evaluation of test results, effect on service life, value of material or work, quality, aesthetics, and other tangible engineering basis. The CO will determine disposition of the nonconforming work.

Delete Subsection 106.02 and replace with the following:

106.02 Visual Inspection.

Acceptance is based on visual inspection of the work for compliance with the specific contract requirements. Use prevailing industry standards in the absence of specific contract requirements or tolerances.

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107 - Legal Relations and Responsibility to the Public

Delete Subsection 107.05.

Delete Subsection 107.05.

108 - Prosecution and Progress

Delete Section 108 in its entirety.

109 Measurement and Payment

Delete the entire Section and replace with the following:

Section summary:

Delete all Subsections of other Sections in the FP-14 that refer to “Acceptance” or “Measurement” or “Payment”. The specific details for each line item are described on the Schedule of Items.

Payment for contract work will be made only for and under those pay items included in the Schedule of Items. All other work and materials will be considered as incidental to and included in the payment for items shown.

152 – Construction Survey and Staking

Delete Section 152 and replace with the following:

The Contractor shall be responsible for the construction survey and staking required for this work.

The existing trail centerline and existing culvert alignment shall be preserved with the construction of the new work.

The location of the existing culvert at the trail centerline shall be set as the project Station called out on the Drawings. The rest of the project Stationing shall be determined from this point.

The general location of the project benchmark, and its elevation for this project, are shown on the Drawings. Before beginning the work, the contractor shall locate this benchmark and check if the elevation closely matches the existing conditions and conditions shown on the Drawings. If

South Farm Lake Culvert Replacement 03/13/23 Page 10 of 18 any discrepancy is discovered, the Contractor shall notify the COR immediately and prior to commencing any ground-disturbing work. In such a case, the Contractor shall work together with the COR to agree upon a benchmark to use for this project before commencing ground-disturbing work.

155 - Schedules for Construction Contracts

Delete Section 155 in its entirety.

Delete Section 155.

156 – Public Traffic

Delete Section 156 and replace with the following:

Safety and Public Notification Once mobilized to the site, the Contractor shall be responsible for the safety of the public in the work area until work is completed and all equipment, materials, and personnel are demobilized from the site.

The Contractor shall place warning signs at the proper locations to warn public of trail work and construction traffic on roads and trails. A notice of where and when the public might expect delays due to project work shall be posted on access roads and trails to the project.

Trail Closure The Contractor shall submit a written Trail Closure Request to the COR at least (14) days prior to a proposed closure of the trail to public traffic. The Contractor shall not proceed with the closure of the trail to public traffic without written approval for the submitted closure period. If the Contractor requires a change to the proposed trail closure dates, a new Trail Closure Request with the revised dates must be made in writing for consideration, and approved by the Government, before the closure may be implemented.

The Contractor may close the trail at the culvert site for no more than five consecutive days, and shall not close the trail on any Saturday, Sunday, or Government Holiday. “Trail Closed Ahead” signs shall be placed at nearest junctions and traffic barricades along with “Trail Closed” signs at each end of work site.

Temporary Sign Requirements All signs shall meet the minimum requirements as established by the current Manual of Uniform Traffic Control devices (MUTCD) edition. Proper posting and continuous maintenance of warning signs is the responsibility of the Contractor for the duration of the project. Contractor

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157 – Soil Erosion and Sedimentation Control

Delete entire section and replace with the following:

157 - Soil Erosion and Sedimentation Control

Description

157.01 This work consists of furnishing, constructing, and maintaining soil erosion and sediment control devices to eliminate or minimize pollutants in stormwater discharges from the project.

Material

157.02 Conform to the following Subsections:

Backfill material 704.03 Fiber rolls and socks 713.12 Floating turbidity curtains 713.21 Riprap 705.02 Sandbags 713.14 Sediment filter bags 713.19 Seed 713.04 Separation/stabilization geotextile and geotextile filter 714.01(a) Silt fence 713.16 Temporary plastic fence 710.11 Temporary rolled erosion control products 713.17 Water 725.01(b)

Construction Requirements

157.04 General.

Thirty (30) days prior to the start of construction, submit a written plan according to subsection

104.03 with all necessary permits that provides permanent and temporary erosion control measures to minimize erosion and sedimentation during and after construction. Do not begin work until the necessary controls for that particular phase of work have been implemented. Do not modify the type, size, or location of any control without approval.

When erosion control measures are not functioning as intended, take corrective action to eliminate or minimize pollutants in storm water discharges from the project.

157.05 Controls and Limitations on Work.

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Before grubbing or grading construct sediment controls around the perimeter of the project including filter barriers, diversion, and settling structures as appropriate.

Limit the combined grubbing and grading operations areas to 8 acres (3.2 hectares) of exposed soil at one time.

Construct and implement soil erosion and sediment control measures as follows:

(a) Construct temporary controls in incremental stages as construction proceeds;

(b) Construct temporary slope drains, diversion channels, and earth berms to protect disturbed areas and slopes;

(c) When a soil disturbing activity within a portion of the project is complete, apply permanent measures to the finished slopes and ditches within 14 days;

(d) When a soil disturbing activity within a portion of the project has temporarily ceased, apply temporary measures within 14 days;

(e) Construct outlet protection as soon as culverts or other structures are complete;

(f) Construct and maintain soil erosion and sediment controls on and around soil stockpiles;

(g) Following each day’s grading operations, shape earthwork to minimize and control erosion from stormwater runoff; and

(h) Maintain stabilized construction exits to minimize tracking of soil onto existing roads.

157.06 Filter Barriers. Construct silt fence, berms, and fiber rolls and socks to reduce the velocity of runoff to allow sediment to settle.

157.10 Diversions. If used, construct temporary channels, temporary culverts, earth berms, or sandbags to divert water around disturbed areas and slopes. Use temporary channels, temporary culverts, pumps, sandbags, or other methods to divert the flow of live streams for permanent culvert installations and other work. Stabilize channels according to Subsection 157.11. Provide outlet protection.

157.11 Waterway and Slope Protection and Stabilization. Use the following:

(f) Floating turbidity curtains. Install floating turbidity curtains within a body of water to minimize the migration of silt laden water out of the construction area.

157.13 Permanent Soil Stabilization.

Control soil erosion on all disturbed areas. Use the following:

(b) Turf establishment. Apply seed and erosion blanket for soil erosion protection. Seed at a rate of 45 pounds/acre. Protect and care for seeded areas, including watering, until permanent turf establishment is in place.

209 – Structure Excavation and Backfill

Add the following to Subsection 209.03

Fully remove any existing culverts or other old material from the excavation. All removed material that is not incorporated into the work becomes the property of the Contractor. All

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Contractor material that is not incorporated into the work shall be removed from Government property and shall be reused, recycled, or disposed in accordance with Federal, State, and Local requirements.

Delete Subsection 209.06 and replace with the following:

209.06 Dewatering

Floating turbidity curtains shall be in place before beginning any excavation and/or dewatering tasks.

Refer to Subsection 157.11.

Dewater the excavation for removal and replacement of the culvert. All excavation work shall be done under dry conditions.

At the Contractor’s option, the water flow from one side of the trail embankment to the other may be stopped completely during construction. However, the level of the water on the highest side of the trail embankment shall not exceed Elevation 1388.00. In addition, the difference in the water elevations from one side of the trail embankment to the opposite side of the trail embankment shall not exceed 1.5 feet.

Alternately, or in combination with periods of stoppage of flow across the trail embankment, the Contractor may provide a temporary diversion or alternate route for water flow to continue during construction.

Move water as necessary to perform the work. Contractor shall provide method of reducing silt and sediment, such as through the use of settling ponds or filter bags, before allowing the dewatering water to return to the watercourse. The method used must satisfy Federal, state, and local regulations.

Excavation Dewatering Plan Contractor shall submit a Dewatering Plan to the COR at least (30) days prior to anticipated implementation date for review and approval.

The Excavation Dewatering Plan shall include:

The duration of the proposed stoppage of flow across the trail embankment AND/OR a description of the type and location of diversion system to be used to provide temporary flow across the trail embankment.

A description of the material, equipment, and processes to be used to assure dry conditions for the culvert replacement work. (example: size/extents of sheet pile or hydro-dam, type of pumps, etc.)

A description of the material, equipment, and processes to be used to avoid releases of silt and material into the watercourse. (example: installation of floating silt curtain, gradual

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A contingency plan to be implemented in case of unexpected weather likely to cause high flows OR water level above Elevation 1388.0 ft at the dewatering location. The contingency plan shall include a description of the conditions/scenarios which would trigger implementation of contingency plan.

The COR must be present at the time of stoppage of flow between the stream side and the lake side of the trail embankment, AND at the time of restoration of flow between the stream side and the lake side of the trail embankment.

The COR must be notified as soon as possible if the Dewatering Contingency Plan is to be implemented.

The restoration of flow between the stream side and the lake side of the trail embankment shall be done in a controlled and slow manner.

302 – Minor Crushed Aggregate

Add to Subsection 302.03:

a) Existing surface shall be dry and stable before placement of new aggregate.

Delete Subsection 302.05 and replace the entire subsection with the following:

302.05 Compacting and Finishing Crushed Aggregate

Compaction is required on all newly placed gravel and on existing areas that are excavated or otherwise receive significant disturbance.

Compact until visible deformation ceases to the satisfaction of the CO/COR. Compaction may be achieved by one of the following methods:

Three passes of a smooth drum vibratory roller of 2,400lbs or greater weight.

Multiple perpendicular passes of a vibratory plate compactor on fill or material lifts not to exceed 4 inches.

Multiple passes by loaded rubber tire construction equipment until visible signs of deformation cease.

Delete Subsection 302.07 and replace the entire subsection with the following:

302.07 Measurement

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When measuring aggregate by volume CY (cubic yard), the loose volume as hauled in a vehicle (vehicle quantity) shall be used.

Before hauling, or after the first load is delivered to the site and placed, the Contractor and COR shall together measure each hauling vehicle and agree on the volume to be used as a “full load” for that vehicle. Trucks shall be sent to the site with “full load” volume unless special arrangements are made in advance. Trucks that arrive with less than a full load may be rejected and sent back to the pit, or may be placed without credit. No credit will be given for partial loads that were not coordinated in advance.

In order to be credited, the material delivery shall be accompanied by a load ticket. No credit will be given for material delivered without a load ticket. A load ticket for each load of aggregate delivered to the work site shall be submitted to the COR on the SAME DAY that it is delivered. The load ticket shall show the approximate loose volume in CY or Tons, the date/time loaded, AND the specific Site Designation (letter) to which the material was delivered.

Delete Subsections 302.08

303 – Roadway Reconditioning

Add the following to Subsection 303.01:

The word “Road” shall be taken to mean the Stony Spur Trail.

Perform Roadway Reconditioning work per this subsection on all areas designated to receive new surface gravel BEFORE the new gravel is placed.

Before beginning Roadway Reconditioning work, take necessary actions to drain and dry the existing trail surface and material. Do not work saturated soil.

Delete Subsections 303.02, 303.04, 303.08, 303.9, 303.10

602 - Culverts and Drains

Delete entire section 602 and replace with the following:

602 – Culverts and Drains

Description

602.01 This work consists of removal of existing culverts and furnishing and installing culverts.

Material

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602.02 Conform to the following Sections and Subsections:

Metal pipe 707

Construction Requirements

602.03 General.

The Drawings show the size, length, and approximate location of culverts. Coordinate final placement with the CO/COR in the field.

Furnish culvert pipe with a wall thickness not less than that shown on the Drawings.

Culvert pipes shall be provided as single-piece for the lengths shown (no joints/splices).

At the site that requires an extension of an existing culvert, the size of the extension culvert pipe shall match the existing culvert. For bidding purposes, assume the size and length of pipe shown on the Drawings. Do not order the pipe until the actual required size and length are verified in the field and coordinated with the CO/COR.

Excavate and backfill according to Section 209.

703 – Aggregate

Delete Subsection 703.5 and replace with the following:

703.5 Subbase, Base, and Surface Course Aggregate

For all subbase, base, and surface course aggregate:

Material meeting the requirements of MNDOT Class V specification shall be provided by the Contractor

Aggregate Testing:

One gradation shall be submitted to the government per each source used. Gradations shall be submitted and approved by the Government BEFORE the material is hauled to the site.

704 - Soil

Delete Subsection 704.02 and replace with the following:

704.02 Bedding Material.

Bed culverts on LOOSE, RAKED MnDOT Class V aggregate.

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Delete Subsection 704.03 and replace with the following:

704.03 Backfill Material.

Backfill culverts with MnDOT Class V aggregate full depth.

705 - Rock

Delete entire Section 705 and replace with the following:

705 – Rock

705.01 Barrier Rock

Where barrier rock is called for, provide rocks with the following characteristics:

hard, durable, free of organic and spoil material, and resistant to weathering and water action.

Generally rounded shape; free of sharp edges on all exposed surfaces Minimum diameter of 36” in any direction

707 – Metal Pipe

Add to Subsection 707.02

703.02 Metallic-Coated Corrugated Steel Pipe

All culvert pipe required for this contract shall be:

a) Aluminized Steel, 12 Ga. in sizes and lengths shown on the drawings.

Each culvert shall be provided as a single continuous length unless otherwise noted on the drawings. No splices shall be allowed except as noted on the drawings.

713 – Roadside Improvement Material

Add to Subsection 713.04

713.04 Seed

Use MNDOT Sandy Roadside mix

Add to Subsection 713.16

713.16 Silt Fence

All silt fence required for this contract shall have the following characteristics:

36” wide woven geotextile

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Wood posts at a maximum spacing of 10 feet No reinforcement wire

Add to Subsection 713.17

713.17 Temporary Rolled Erosion Control Products

All erosion blanket required for this contract shall have the following characteristics:

Type 1.C - ultra-short term single-net erosion control blanket An erosion control blanket composed of processed degradable natural or polymer fibers mechanically-bound together by a single rapidly degrading, synthetic or natural fiber netting to form a continuous matrix

Add to Subsection 713.21

713.21 Floating Turbidity Curtains

Curtains shall b713.17e Type I, DOT grade, suitable for lakes, ponds, and inland waters.