Attch_1_Specifications.docx

Marienville Trail Heavy Maintenance Marienville ATV Trail Rehab Allegheny National Forest

SPECIAL PROJECT SPECIFICATION

Section 904 - Maintenance for Traffic

904.01 General - ADD:

No trail construction will be permitted on the following holidays:

-Memorial Day (5/30/2016), Independence Day (7/4/2016), Labor Day 9/5/2016), Columbus Day, Monday (10/10/2016) - Veteran’s Day, Friday (11/11/2016) – Thanksgiving Day, Thursday (11/24/2016) and Christmas Day, Wednesday (12/25/2016)

From the notice to proceed to May 26th, 2016 in the Spring and to Dec. 31, 2016 in the Fall the contractor can work Monday thru Sunday, excluding holidays

It is estimated that work will commence October 3, 2016 for the Fall work on the Marienville OHM Trail and October 18, 2016 on the Marienville ATV nad Timberline Trails.

All Spring work must be completed by May 26, 2016, and Fall work must be completed by November 23, 2016. In the event that weather or other unforseen condition delay work, work may be completed in the Summer and Winter. All work completed during recreational seasons will be completed Monday through Thursday only.

Contractor will leave the trail in a useable condition at the end of work on Thursdays, after 5/27/16. No obstacles, for example, pipes, berms, stone, equipment etc., will be left on or around the trail.

No work will commence until all traffic signs are in place. The sign plan shall be submitted for review and approval at the Prework meeting.

Trail segments will be closed to all recreational traffic when work is scheduled. Trail segments utilizing roads will remain open to OGM operator only.

The contractor will install and maintain all signs and barricades. ROAD CLOSED barricades and HEAVY TRUCK TRAFFIC signs conforming to the Manual on Uniform Traffic Control (MUTCD) shall be incorporated into a sign plan submitted to the Contractor and approved by the Engineer prior to commencement of work.

All signs must be in place during construction operations and removed during the holiday weekends.

In the event of dry weather which causes dusty conditions from hauling and an unsafe situation as determined by the Engineer or Inspector, the project will be shutdown (with 24 hour notice) until the conditions subside or the contractor employs dust abatement measures. The Forest Service must approve any dust abatement procedures.

The crossing of the East Branch Spring Creek trail bridge with any construction equipment is prohibited. This would apply for Spring 2016. This bridge is expected to be replaced and may be crossed in the future. Contractor shall be furnished with load limits after the new bridge is installed.

SUPPLEMENTAL SPECIFICATION

Section 921 - Culverts

MATERIALS

921.02 Requirements - ADD:

Used bare steel pipe casings are permitted on this project. Minimum wall thickness permitted is 0.20 inches. Pipes shall be straight with no bends, bows or dents. Pipe ends will be round with no deformation. Used casing with plastic, fiberglass or asphalt wrapping will not be permitted.

PAYMENT

921.06 Basis - ADD:

Pay Item Pay Unit

921(08) 16” Steel Pipe Casing L.F.

Marienville ATV Trail Rehab S.O. Approved 2/16

SPECIAL PROJECT SPECIFICATION

Section 941 - Aggregate Surfacing

MATERIALS

941.02 Requirements - ADD:

Gradation requirements for aggregates are found in SPS 961.

941.10 Spreading & Compacting – ADD TO SECOND PARAGRAPH:

Obtain compaction by using a single smooth drum vibratory roller over the entire area of each layer until visual displacement ceases, but not fewer than three complete passes. The vibratory roller shall have a minimum weight of 6000 pounds and a maximum widh of 66”. Compaction shall be completed at the end of each workday over segments of trail completed that day. This type of Compaction will be considered compaction B.

Excessive machine work and material handling to attain the trail design width is discouraged to eliminate limestone segregation and contamination.

All disturbed ground caused by machine work will be considered incidental to Pay Item 955 and the extent will be a factor of the contractor’s surfacing operation.

PAYMENT

941.13 Basis - ADD:

Pay Item Pay Unit

941(16)a Crushed Aggregate, Type Limestone, Grading DSA, TON Compaction B

941(07)a Base Coarse, R3, Compaction A, TON

Marienville ATV Trail Rehab S.O. Approved 2/16 Allegheny National Forest

SUPPLEMENTAL SPECIFICATION

Section 954-Obliteration of Abandoned Trailways

Description

954.01 Work. This work consists of obliteration of trailways, construction of drainage structures, and reestablishment of natural drainage patterns and vegetation.

Construction

954.02 General. Obliterate trailways in locations SHOWN ON THE DRAWINGS or

DESIGNATED ON THE GROUND.

954.03 Trail Closure. Block trailway entrances to traffic by placing rocks, logs, tree branches, and duff across the trailway. Place rocks, logs, branches, and duff to conceal the abandoned trailway and discourage future use. Use rocks and other materials that are available in the areas to be obliterated.

954.06 Scarify. Scarify the trail to promote the establishment of vegetation at locations SHOWN ON THE DRAWINGS or DESIGNATED ON THE GROUND. Scarification is defined as breaking up the compacted soil to a depth and maximum clod size as SHOWN

ON THE DRAWINGS.

Payment

954.10 Basis. Pay for the accepted quantities in accordance with Section 906 at the contract unit price for each PAY ITEM SHOWN IN THE SCHEDULE OF ITEMS.

Make payment under:

PAY ITEM PAY UNIT

954(02) Obliteration .................................................................. L.F.

Section 955- Seeding and Mulching

Description

955.01 Work. This work consists of preparing seedbeds and furnishing and placing required seed, fertilizer, lime and mulching material.

All disturbed areas along the trail will be leveled and smoothed and ponded water will be drained prior to seeding and mulching. Any disturbed areas caused by the contractor’s operations will be seeded and mulched. For example this shall include turnaround areas, stockpile areas, vehicle passing locations, leadoff ditches, culvert locations, etc. In addition, the area excavated for borrow will be re-sloped, re-contoured and seeded and mulched.

Shoulder areas beyond the trail surfacing width will not require seed and mulch unless specifically addressed in the work description.

Materials

955.02 Seed. Do not use seed that is wet, moldy, or has been damaged in transit or storage.

Seed mixture and application rate:

Broadcast seeding: filler such as kitty litter or sand may be added to help proportion the seed. Follow seeding by rolling or tracking seed into the top of soil to achieve good seed to soil contact. Cover with a light layer of straw mulch.

Fertilizer application rate:

Chemical analysis shall be as listed below, and fertilizer shall be applied at the rate of 500 lbs./acre 15% Nitrogen, 15% Phosphorous, 15% Potassium Agricultural limestone application rate: 1.5 tons/acre Mulch application rate: Straw 3000 lbs./acre

PAYMENT

955(01) Seeding, Hydraulic or Dry Method (with mulch) ……………………………. mi..

SPECIAL PROJECT SPECIFICATION

Section 961 – Stone & Rock

961.02 Sizes & Shapes - DELETE ENTIRE PARAGRAPH AND ADD:

Crushed aggregate shall meet the requirements as shown in the table below and SHOWN IN THE SCHEDULE OF ITEMS.

Table 961-1 - Gradation Table

PA2A Gravel

Sieve Size Percent Passing

DSA Limestone Gravel (1.5” minus)

Sieve Size Percent Passing

#200 10-15

R-3 Rip-RAP

Sieve Size Percent Passing

Possible Source: Brokenstraw Gravel; Pittsfield, PA 814-563-7911

Grading DSA

Purchasing Specification:

All driving surface aggregate is to be derived from natural stone formations. Rock is defined as consolidated mineral material. For this program, it is restricted to that which has been mined or quarried from existing geologic strata. Aggregate shall be Type A as classified in Table B Coarse Aggregate Quality Requirements of PaDOT

All components of the aggregate mix are to be derived by crushing parent rock material.

Ninety-eight percent of the fines passing the #200 sieve must come from the parent stone material. No clay or silt soil may be added. Determine the amount of particles less than #200 sieve size using the washing procedures specified in PTM No. 100* “other uses” category.

The required amount and allowed ranges, determined by weight, for various size particles are:

LA Abrasion Less than 40% passing Los Angeles Abrasion test, AASHTO T-96 (ASTM C131) shall be used to determine this property. Existing tests made for and approved by PaDOT will be accepted.

Soundness or resistance to freeze/thaw (i.e. sulfate test) is not specified for this application because a gravel road driving surface aggregate is not bound within a concrete or asphalt mix.

Aggregate must be within the range of pH 6 – pH 9 as measured by EPA 9045C.

Material is to be delivered and placed at the optimum moisture content as determined for the particular source by the contractor or aggregate supplier. Aggregate exceeding 15% moisture content shall be rejected or a deduction for excess water subtracted from the contractor unit cost as determined by the COR. Water dripping from the bed, being unable to easily dump the material from elevated truck beds or being unable to properly compact dumped material are field indicators of excessive moisture which will warrant rejection of DSA.

To eliminate segregation of material, stockpiling of material at jobsite will not be permitted unless authorized by COR.

The following are “Local” sources for this material:

Hawbaker – Turtlepoint, PA. 814-237-1444 or 814-642-2500 – Clarion 814-797-5712

New Enterprise Stone & Lime Co. Tyrone, PA. 814-695-4405

Jim Delullo Stone Sales Kersey, PA. 814-834-1914

Placement Specifications:

Road Preparation:

The road surface to receive the aggregate is to have drainage corrections made and be crowned to the ¼ inch per foot. This may be precluded by the absence of sufficient material such as occurs when bedrock is exposed.

The receiving surface is to be scarified to permit knitting and avoid formation of a shear plane.

Driving Surface Aggregate Placement:

Minimum compacted depth of four inches is to be established for driving surface.

Driving Surface Aggregate is to be applied by tailgate spreading full depth in small quantities and with a spreader box in quantities over 5000 tons.

Material is to be delivered and placed at optimum moisture content as determined for that particular source. Material when placed shall be compacted as follows:

Beginning on the lower or berm side of the crown, begin rolling and working your way to the top of crown by overlapping the successive longitudinal passes. Do not run the roller lengthwise directly on the crown. Compaction with truck tires is not accepted.

Steel wheel rollers other than vibratory shall be capable of exerting a force of not less than 250 pounds per inch of width of the compression roller or rollers.

Vibratory steel-wheel rollers (rubber tire driven) shall have a minimum weight of 6,000 pounds.

Contractor must have certification in writing that material placed is Driving Surface Aggregate meeting this specification.

Section 912 - Trail Reconditioning

912.01 - Description - ADD

This work consists of reconditioning ditches, shoulders, trailbeds, leadout ditches and aggregate surfaces. Construct outslopes, clean and maintain all trailbed drainage structures. All work excludes trail that runs together with Forest roads.

912.03 - Construction Requirements -ADD

Ditch Reconditioning. Remove all slide material, sediment, vegetation, and other debris from the exisiting ditches and culvert inlets and outlets. Reshape ditches and culvert inlets and outlets to achieve positive drainage and uniform ditch width, depth, and grade. Dispose of waste as directed by inspector.

Trailbed Reconditioning. Repair soft and unstable areas by excavating materials to the limits designated by the CO. Prevent unsuitable materials from becoming mixed with the backfill. Dispose of unsuitable material as directed inspector. Backfill with suitable material and compact. Remove all organic, deleterious material larger than 6 inches from the top 6 inches of subgrade. Scarify, rip and shape the traveled way at locations and to depth and width designated on the plans. Remove surface irregularities and shape to provide appropriate trail template.

Compact using the following method as specified:

a. Compaction A. Operate equipment over the full width of trail.

b. Compaction B. Operate rollers over the full width of each layer until visual displacement ceases, but not fewer than three complete passes. Use rollers that meet the following requirements:

1. Steel wheeled rollers, other than vibratory, capable of exerting a force of not less than 250 pounds psi of width of the compression roll or rolls.

2. Vibratory steel wheeled rollers equipped with amplitude and frequency controls with a minimum weight of 6 tons, specifically designed to compact the material on which it is used.

3. Pneumatic-tired rollers with smooth tread tires of equal size that will provide a uniform compacting pressure for the full width of the roller and capable of exerting a ground pressure of at least 80 pounds psi.

PAYMENT

912(02) Reconditioning ……………………………. mi.

General Notes

– Prior to any earth disturbing activities, contractor shall call the Pennsylvania One Call System (800-242-1776) and all Oil & Gas Operators in the work area to determine locations of any underground utility lines.

– Contractor is responsible for maintenance of all Forest Service roads over which pit run or commercial stone material is hauled. Trails and Roads hauled on, shall be bladed or shaped to restore travel way to the condition found prior to haul.

– Culvert cleaning and repair will be considered incidental to trail reconditioning.

– Contractor shall furnish, erect and maintain the minimum barricades and warning signs identified in the Special Project Specifications until final inspection and acceptance, unless otherwise directed by the Engineer. Signs shall conform to the Manual on Uniform Traffic Control Devices (MUTCD). Contractor shall install “ROAD CONSTRUCTION AHEAD” signs on all trails in this project area and at ATV trail crossings. Contractor’s sign plan must be approved by Forest Service prior to work. Signs will be covered on weekends, holidays and any days when contractor is not working.

– Trail shall be completed in such a manner that water shall not pond on trailbed or in ditch lines.

– Contouring, topsoil re-spreading, seeding and mulching of disturbed areas as previously specified by the Forest Service is required.

– DSA limestone shall be shipped at optimum moisture content not exceeding 15%. Limestone loads that fail field test parameters will be rejected.

– Trailway sod encountered during road reconditioning operations will be spread and leveled outside the trail template avoiding piles, as determined by the Forest Service. Natural terrain depressions and openings are the preferred waste locations. Seeding and mulching may be required to supplement natural revegetation.

– Vegetation cut down during trailside brushing will be pulled beyond the clearing limits and the toe of any roadway template construction. Mixing of soil and cut vegetation shall be avoided. All material will be scattered and lopped within 3’ of the ground.

– Aggregate stockpiled for culvert replacement will be located on the existing road surface to assure maximum utilization of the material and eliminate disturbance of existing vegetated areas.

– Contractor shall install silt fence and straw bales at live stream crossings to eliminate sediment in the stream course. Any sediment collected will be removed and stabilized with seed and mulch. This will be considered incidental to Pay Item 912.03

Trail DETAILS and Drawings image2.wmf oleObject2.bin image3.wmf oleObject3.bin image4.wmf oleObject4.bin image1.wmf oleObject1.bin