Appendix_C_Road_Maintenance_Specifications.pdf

South Big Bear Stewardship

APPENDIX C – Technical Specifications and

Requirements for Road Maintenance

1. All road maintenance specifications outlined in the Schedule of Items are mandatory in the contract except for those items stated as optional. All optional items are exercised at the option of the Government. See the attached standard road maintenance specifications and drawings for service work specifications.

The legal location of the project is T. 2 N., R 1 W. Sections 25 and 36, T. 2 N. R.

1E. Sections 27, 28, 29, 30, 31, 32, 33 and 34. S.B.M., Unsurveyed, San Bernardino County, California.

2. All road maintenance work completed within an LOP identified in 8. 52.211-10

COMMENCEMENT, PROSECUTION, AND COMPLETION OF WORK (APR

1984) shall be completed within a 2 hour period and shall move on to another location for the work day before coming back to complete work in that same location.

3. When two or more contractors are simultaneously using the same road, the contractors will develop maintenance responsibilities and arrangements for accomplishing the work. The Government must agree to this plan. If the commercial users cannot agree on maintenance responsibilities, the Government shall resolve the differences.

4. GOVERNMENT QUALITY ASSURANCE PLAN

4.1 Inspection: Government inspections are for the purpose of satisfying the

Government that the services are acceptable and do not relieve the Contractor of the responsibility for maintaining quality control. The Contractor shall conduct inspections on all units in accordance with the Contractor’s Quality Control Plan included in the Contractor’s technical proposal which is made part of this contract.

4.2 The contractor is responsible for performing or having performed all inspections and tests necessary to substantiate that the supplies or services furnished under this contract conform to contract requirements, including any applicable technical requirements for specified manufacturers’ parts.

5. ACCEPTABLE QUALITY LEVEL FOR ROAD DECOMMISSIONING:

5.1 Government Inspection – The Government shall conduct inspections of the Contractor’s work to determine compliance with the contract specifications and determine a basis for making payment. Inspections will consist of a visual walk-through inspection of the work performed and will be based on adherence to the Acceptable Quality Level (AQL) for the tasks and critical sub-tasks. The Government may also install a series of inspection plots to check for compliance to AQL.

5.2 Acceptable Quality Level for Road Maintenance – 95% of the required road maintenance specifications conform to the contract. All work is completed within the specified contract time.

5.3 Acceptance – Work will be accepted when it is determined by the visual inspection or plot data that the Contractor’s work conforms to the Acceptable Quality Level (AQL) for the task and critical sub-tasks. Missed areas within the work unit will not be considered a part of the work being inspected and must be re-worked regardless of the results of the inspection of the work completed in the unit. Work units that do not comply with the Acceptable Quality Level for the task and critical subtask are un-acceptable and shall be reworked.

5.4 Measurements for Stewardship Credit – Mileage was measured on a horizontal plane using a Global Positioning System. Unless otherwise indicated by this contract, the contactor may request re-measurement of any quantities. The request must be made in writing and must be within 10 calendar days of completing work on the unit in question. If re-measurement indicates a variance of five percent or less from the stated quantity, the Forest Service may deduct Stewardship Credits to the Contractor equal to cost of this re-measurement. If re-measurement indicates a variance of more than five percent from the stated quantity, Stewardship Credits will be based on the re-measured quantity, and the Contractor will not be liable for the costs of re-measurement. All re-measurement will be done by the Forest Service. The Forest Service may re-measure quantities of completed stewardship work activities at its discretion. The Forest Service will bear all costs for discretionary re-measurement. Re-measured quantities will be the basis for awarding Stewardship Credits. Re-measurement of acreage will be done using a Global Positioning System.

Mandatory Road Maintenance Requirements Summary

Road

Termini

Miles

Applicable Pre-Haul Road Maintenance Specifications From To 808 813 839 839

OSD

841 842 819 - - -

2N08 0.00 1.3 1.3 P P P P P 2N10 0.5 4.0 3.5 P P P P P

2N10A 0.00 0.17 0.0 P P P 2N17 0.00 0.6 0.6 P P P P P P

2N45Y 0.00 0.3 0.2 P P P P 2N51Y 0.00 0.3 0.4 P P P P

6.00 P = Purchaser Performance Item, D = Deposit to Forest Service, D3 = Deposit to Third Party

Miles

Applicable During Haul Road Maintenance Specifications From To 808 813 839 839

OSD

841 842 819 - - -

2N08 0.00 1.3 1.3 P P P 2N10 0.5 4.0 3.5 P P P

2N10A 0.00 0.17 0.0 P P 2N17 0.00 0.6 0.6 P P P

2N45Y 0.00 0.3 0.2 P P P 2N51Y 0.00 0.3 0.4 P P P

Miles

Applicable Post-Haul Road Maintenance Specifications From To 808 813 839 839

OSD

841 842 819 - - -

2N08 0.00 1.3 1.3 P P P 2N10 0.5 4.0 3.5 P P P

2N10A 0.00 0.17 0.0 P P 2N17 0.00 0.6 0.6 P P P

2N45Y 0.00 0.3 0.2 P P P 2N51Y 0.00 0.3 0.4 P P P

Standard Road Maintenance Specifications included:

Section 800- DEFINITIONS AND ABBREVIATIONS Section 801- QUANTITY MEASUREMENT TERMS Section 806- REGULATORY REQUIREMENTS

Section 808 - WORK AREA MANAGEMENT Section 813 - SPOT SURFACING

- Special Spec 703 – REVIEW TABLE 703-3 FOR GRADATION G Section 819 - RIPRAP Section 839 - RESTORE DRAINAGE FUNCTION

Section 839 OSD- BUILT NEW DRAIN DIP BASED ON SPEC 839 Section 841 - CUTTING ROADWAY VEGETATION Section 842 - CORRUGATED METAL SPILLWAYS AND FLUME

800 DEFINITIONS AND ABBREVIATIONS

DEFINITIONS

Wherever in these specifications, or in other contract documents, the following terms, or pronouns in place of them, are used, the intent and meaning shall be interpreted as follows:

Base Course - The layer or layers of specified or selected material of designed thickness placed on a subbase or a subgrade to support a surface course. (See Illustration of Road Maintenance Terms).

Berm - A curb or dike which controls roadway runoff water, or delineates traffic direction. Berms commonly parallel road centerline; however, on Limited Use Roads (Section 838) may be placed diagonally across the roadbed. (See Illustration of Road Maintenance Terms).

Channel - A natural waterway leading into or away from a culvert or bridge.

Culvert - Any structure which provides a passageway, drain, or waterway under a road or embankment.

Cross ditch - A shallow ditch placed across the roadbed to remove water from the roadbed surface which can be driven across by full-size pickups or other high clearance vehicles; usually placed diagonal to the centerline. (See Section 838.)

Lead-off ditch - A ditch used to remove water from roadside drainage ditches, the roadway, cattleguards, or drainage structures such as culverts and drainage dips.

Ditch - A relatively long narrow excavation placed to collect or disperse water.

Drainage dip - A drainage structure which was previously constructed within the roadbed surface to form a uniform depression which allows routine passage of vehicles while diverting water from the traveled way. (See Drawing 837-1, Typical Rolling Dip.)

Drainage ditch - A ditch located parallel to and abutting the roadbed. (See Illustration of Road Maintenance Terms).

Drainage structure - A term identifying man-made devices placed to control water movements.

Drawings - Illustrations showing detailed maintenance required.

Excess Material - Material from the roadway excess to that needed for maintenance of roadway.

Grade - The vertical alignment of the top surface of the road.

Materials - Any substances specified for use in the performance of the work.

Measurement - Method of determining and expressing the quantities of work.Standard Specifications Page 3 of 72

Nominal Dimensions or Weights - The numerical values shown on the drawings or in the specifications as measurements for the work.

Patching - Minor repairs.

Paved Surface or Pavement - Denotes asphalt, concrete, or other stabilized materials excluding natural aggregates. Dust palliative treatments are not considered as pavement.

Reasonably Close Conformity - Means compliance with customary maintenance tolerances where working tolerances are not specified.

Right-of-Way - A general term denoting land, property, or interest therein acquired for or devoted to a road.

Roadbed - The portion of a road between the intersection of the subgrade and side slopes, excluding that portion of the ditch below the subgrade. (See Illustration of Road Maintenance Terms).

Road Listing - A listing of roads and estimated work quantities.

Roadside - (See Illustrations of Road Maintenance Terms).

Schedule of Items - Schedule containing a listing and description of maintenance items, quantities, units of measure, methods of measurement, unit price, and amount.

Shoulder - As used in this contract, the term is restricted to roads having a paved surfacing. (See Illustrations of Road Maintenance Terms).

Slough or Slide - Material deposited on the roadway which may need to be repositioned or removed.

Slump - A localized portion of the roadbed which has slipped or otherwise become lower than that of the adjacent roadbed and constitutes a hazard to traffic.

Special Project Specifications - Specifications which detail conditions and requirements peculiar to the individual project.

Standard Specifications - Specifications for specific divisions of work.

Subgrade - Top surface of roadbed upon which subbase, base course, or surface course was constructed. (See Illustration of Road Maintenance Terms).

Traveled Way - The portion of the roadway for the movement of vehicles. For purpose of this contract, traveled way includes turnouts and curve widening. (See Illustration of Road Maintenance Terms).

Turnouts - A short auxiliary lane on a one-lane road provided for passage of meeting vehicles.

Unsuitable Material - Material removed during maintenance which must be disposed of in Standard Specifications Page 4 of 72 designated locations. Includes material with substantial amounts of vegetation or other objectionable material.

Waterbar - A deeper type cross ditch which is not intended for passage of traffic.

ABBREVIATIONS

Whenever in these specifications, or in other contract documents, the following terms, or pronouns in place of them, are used, the intent and meaning shall be interpreted as follows: (Reference to a specific standard or specification shall mean the latest addition or amendment thereto in effect on date of the Solicitation.)

1. ASHTO - American Association of State Highway and Transportation Officials.

2. CS - Commercial Standard issued by U.S. Department of Commerce.

3. EPA - Environmental Protection Agency.

4. FAR - Federal Acquisition Regulation System.

5. FED SPEC - Federal Specification.

6. FSS - Federal Specifications and Standards.

7. MSHA - Mine Safety Health Administration.

8. MUTCD - Manual of Uniform Traffic Control Devices.

9. NBS - National Bureau of Standards.

10. OSHA - Occupational Safety and Health Act.

Illustration of Road Maintenance Terms. 801 QUANTITY MEASUREMENT TERMS

1. U.S. Customary Units of measure are used in conjunction with these specifications.

2. The methods of measurement and computation will be those necessary to accurately determine the quantities of materials furnished and work performed.

3. All items, which are measured by the feet, will be measured parallel to its longitudinal centerline, unless otherwise shown on the drawings.

4. A station when used as a definition of term or measurement will be one hundred feet, or a precise location along a survey line.

5. Miles will, in the absence of known distances from existing plans or surveys, be determined by the Government using a calibrated survey odometer or equal substitute operated on the traveled way at or parallel to road centerline.

6. The term "ton" means 2000 pounds. Trucks used to haul material measured by truck weight shall be weighed empty at least once daily, and each truck shall bear a plainly legible identification mark. Weigh tickets furnished by the Contractor from certified scales will be used to determine weight measurements.

7. Materials measured by the cubic yard in the hauling vehicle shall be measured therein at the point of delivery. Vehicles may be of any size or type, provided that the box is of such shape that the actual volume may be readily and accurately determined.

8. Measurement by the acre will use the length and width treated. Measurement of width will approximate significant slope breaks, but will not include minor deviations along the slopes. The measured slope distance for the length will multiply width treated and converted to a standard 10,000 square yard or acreage value of the surface area treated.

9. Measure square yard with horizontal longitudinal and traverse measurements.

10. The term "lump sum" when used in the Schedule of Items means the complete unit as required by or described in the contract.

11. Measurement will be made of each item or unit of work, as shown in the

Schedule of Items, completed and accepted in accordance with the contract provisions, specifications, and drawings. Standard Specifications Page 7 of

806 REGULATORY REQUIREMENTS (4/02)

1. DESCRIPTION

This Section identifies the codes and standards which apply to the work in this contract.

2 REQUIREMENTS

The Contractor shall comply with any Federal, State, and municipal laws, codes, regulations, and standards that apply to the work to include but not limited to the following:

29 CFR Part 1926 – Safety and Health Regulations for Construction 49 CFR – Transportation Manual of Uniform Traffic Control Devices (MUTCD) NFPA 30 – Flammable and Combustible Liquids Code NFPA 30A – Motor Fuel Dispensing Facilities and Repair Garages American Society for Testing and Materials (ASTM) Standards

BMP Notes Soil erosion and storm water pollution control measures, where specified, shall be in accordance with section 204 and Caltrans “Best Management Practices”.

Caltrans Storm Water Quality Handbook, “Construction Site Best Management Practices Manual” (BMP’s) can be purchased from California Department of Transportation, publications distribution unit, (916) 445-3520.

When specified, the contractor shall submit a written “Storm Water Management Plan” at least 5 business days prior to beginning work.

The contractor shall not disturb the area beyond project limits. The contractor shall take all appropriate steps to insure that no discharge or pollutants enter any streambed as a result of the contractor’s work activities.

3 MEASUREMENT AND PAYMENT

No separate measurement or payment will be made for meeting requirements of this Section. All work and materials shall be incidental to paid work in this contract.

Standard Specifications Page 8 of 72

808 WORK AREA MANAGEMENT (1/92)

This Section establishes Contractor responsibilities for traffic control and equipment requirements in work areas.

2. REQUIREMENTS

a. Traffic Conditions - Roads other than those listed for work under Section 835 shall be open to traffic with not more than fifteen (15) minutes maximum delay time unless otherwise provided in Special Project Specifications.

b. Work which interferes with use of traveled roadways shall not be initiated or performed until a plan for satisfactory handling of traffic has been approved by the Government.

c. Traffic Control Devices

1. The Contractor shall provide signs and other devices complying with National Standards as contained in Part VI of the Manual of Uniform Traffic Control Devices (MUTCD). Traffic control for occupied work areas shall be in accordance with MUTCD specifications. All signs and devices remain the property of the Contractor.

2. Traffic devices shall be kept current with maintenance operation and removed upon its completion.

3. Traffic approaching the work zone from either direction and side accesses open to travel within the work zone shall be warned by signing.

4. Required signs may be mounted on portable or temporary mountings.

Standard MUTCD shapes, colors, sizes, and legends shall be used.

5. Hazards incidental to the work within or on the traveled way, shoulders, or turnouts shall be marked with hazard identification markers, illuminated beacons, and other MUTCD devices to safely guide road users through the area. Work segments not completed on a daily basis shall be marked appropriately for night travel. Contractor shall obtain authorization before commencing work at night.

6. Advisory speed plates may be used to control traffic through the work area.

d. Flaggers - Properly equipped flag person(s) shall be provided where the traffic is required to stop before proceeding. Traffic shall be stopped in locations which provide width enough for passage of traffic and reasonable protection for vehicles. When flag control is used, advance warning signs are required.

e. Contractor's Equipment

1. All vehicles and machinery operating on or from the traveled way or road shoulder shall have flashing lights, strobes, or rotary beacons operated continuously while work is in progress. Truck headlights shall be on while operating. Back-up horns shall be required on all self-propelled equipment.

Standard Specifications Page 9 of 72

2. Vehicles and machinery not currently used in the maintenance operation shall be parked off the traveled way at approved locations to minimize interference with normal use.

3. MEASUREMENT AND PAYMENT

No separate measurement or payment will be made for meeting requirements of this Section. All work and materials shall be incidental to paid work in this contract.

813 SPOT SURFACING (3/96)

This work consists of placing surface aggregate as staked on the ground. It includes preparing the area, furnishing, hauling, and placing all necessary materials and other work necessary to blend with the adjacent road cross section.

2. MATERIALS

a. Materials will be Government furnished when stated in Schedule of Items.

b. Materials furnished by the Contractor shall conform to the gradation requirements and the quality requirements of Section 893.

3. MAINTENANCE REQUIREMENTS

a. The area to be spot surfaced shall be thoroughly loosened to a minimum depth of one (1) inch prior to placement of aggregate.

b. Mixing and Placing

1. When scheduled coincident with work under Section 811, spot surfacing and existing aggregate, when ordered, shall be mixed with water until a uniform mixture is obtained prior to final shaping and compaction.

2. The material shall otherwise be spread on the prepared area in layers no more than four (4) inches in depth. When more than one (1) layer is required, each layer shall be shaped and compacted before the succeeding layer is placed. Upon completion, the spot surfacing shall reasonably conform to the adjacent cross section and provide smooth transition in the road profile.

3. Compaction shall be accomplished by using Method A. Compaction Method A is considered incidental. Compaction Method B shall be used when ordered.

Compaction methods are:

Compaction Method A: By breaking track while operating equipment on the bladed surface. Compaction shall cover the full width bladed surface.

Compaction Method B: 8-10 ton pneumatic, steel or equivalent vibrating roller, operated to cover the full width of each layer two (2) times.

4. MEASUREMENT

a. The quantity will be the number of cubic yards measured in the vehicles, or square yards of aggregate placed, or tonnage verified by weight slips whichever is shown in the Schedule of Items.

b. Hauling is considered incidental when materials are furnished by the Contractor and when the haul distance is less than one (1) mile for Government furnished materials. When the haul distance exceeds one (1) mile for Government furnished materials haul will be ordered and paid under 832(3).

5. PAYMENT

a. The accepted quantities will be paid for at the contract unit prices shown in the

Schedule of Items.

b. Payment will be made under:

Pay Item Pay Unit 813(1) Spot Surfacing, Grading ____ Cubic Yard 813(2) Spot Surfacing, Grading ____ Square Yard 813(3) Spot Surfacing, Grading ____ Ton 813(4) Spot Surfacing, Government Furnished Materials Cubic Yard

813(5) Compaction Method B Square Yard

819 RIPRAP (11/07)

This work shall consist of furnishing, hauling and placing erosion resistant and protective materials for use on embankments, streambanks, culvert inlets and outlets, channel bottoms and side slopes, abutment wings, structure foundations, and other designated locations.

2. EQUIPMENT

All methods employed in performing the work and all equipment, tools and machinery used for handling the material and executing any part of the work shall be subject to the approval of the Government before the work is started, and whenever unsatisfactory, they shall be changed or improved as required.

3. MATERIALS

Unless shown in the Schedule of Items, all materials shall be furnished by the Contractor and shall meet the following requirements:

a. Riprap Rock used for riprap shall be hard angular rock with a Durability Absorption Ratio greater than 23 or between 10 – 23 if the Durability Index is greater than 52.

Durability Absorption Ratio = Durability Index (Course) AASHTO T 210 Percent Aborption + 1 AASHTO T 85 Neither the breadth nor thickness of any piece of riprap shall be less than one-third its length. Rock shall be free from overburden, spoil, shale, and organic material;

shall meet the following gradation requirements for the class specified; and shall be delivered to designated locatons.

Rock for grouted riprap shall be free of fines that prevent penetration of grout. Size of Rock (Pounds)

Percent of Total Weight Smaller Than the Given Size

Class I 50 100 35 80 10 50 2 Not to exceed 10 Class II 100 100 60 80

SECTION 839 – RESTORE DRAINAGE FUNCTION

Work consists of log, limb, and debris removal; blading and shaping of the roadbed to restore drainage function. This work includes shoulders, ditches, drainage dips, leadoff ditches, turnouts, and intersections; cleaning drainage facilities; and removing washes and sloughs that inhibit drainage.

2. MAINTANENANCE REQUIREMENTS

a. General 1.The existing traveled way and shoulders, including turnouts unless otherwise ordered, shall be bladed and shaped to produce a surface which is uniform, consistent to grade, and crowned or cross-sloped as indicated by the character of the existing surface unless otherwise Marked on the Ground, to at least one half inch (1/2") per foot of width, but not more than three quarter inch (3/4") per foot of width. Surfacing materials shall be thoroughly loosened to a depth of no less than 2 inches or the depth of potholes or corrugations. Corrugations are washboarding and similar defects. Scarification to facilitate cutting to the full depth of potholes or corrugations may be elected by the Contractor but will be considered incidental to blading. Scarification shall not go deep enough to cause contamination of the surfacing.

2. When Section 891 is included in the Road Listing, the Contractor shall apply water during blading when sufficient moisture is not present to prevent segregation. Water supply, hauling, and application shall be in accordance with Section 891 and shall be incidental to blading unless Pay Items for Section 891 are included in the Schedule of Items.

3. Existing native, rock or aggregate surfaced drainage dips shall be cleaned and shaped incidental to blading to divert surface runoff to existing outlet devices, ditches and discharge locations.

4. The Contractor shall establish a blading pattern which provides a uniform driving surface, retains the surfacing on the roadbed and provides a thorough mixing of the materials within the completed surface width.

b. Drainage Facilities Cleaning existing drainage facilities includes roadside drainage ditches, drainage dips, inlet and outlet ditches, overside drains and flumes, inverts and interiors of culverts, culvert catch basins, drop inlets, trash racks, and sediment basins. Slash and debris shall be disposed of as in 839e. Sediment basin clean out shall be disposed for the unit price as shown in the Schedule of Items for Section 832.

Drainage structures not included under this specification are bridges, cattle guards, and culverts over 72 inches in diameter.

c. Ditches, Lead Off and Roadside

Wood, rock, trees, brush and other debris shall be removed from ditches to provide unobstructed flow of water. Slash and debris (woody or organic) shall be scattered in such a manner as not to impede the flow of water. The backslope of ditches shall not be undercut by cleaning operations. Existing ditch blocks shall be restored, reshaped, and compacted as needed for effective drainage through culverts. Catch basins shall be cleaned of material above the invert of the culvert.

d. Dips (Also called intercepting dips or rolling dips)

Existing drainage dips shall be cleaned and the outslope gradient sufficiently restored to remove surface water from roadbed, conducting the water through drainage facilities.

e. Culverts Inlet and outlet ends, as well as four feet inside each end, of existing culvert, shall be cleaned to provide unobstructed flow of water. Natural drain culvert channels shall be cleared of all down trees, limbs, stumps, brush, rocks and other debris, that restricts the flow of water, 6 feet in width for 15 linear feet at each end. Slash and debris (woody or organic) shall be scattered in such a manner as not to impede the flow of water. The channel shall be shaped to natural streambed with constant grade at inlet and outlet ends.

f. Overside Drains and Flumes Overside drains shall be cleaned of debris to provide an unobstructed flow of water.

Debris (woody or organic) shall be scattered in such a manner as not to impede the flow of water.

g. Designed Earth Berms Berm breaches of less than 5 cubic yards shall be filled, shaped, and compacted by wheel rolling. Fill material shall be located within 500 feet of breach or by ripping to the depth and width necessary to obliterate such defects; providing a smooth transition to adjacent satisfactory roadbed. Filling with loose material will not be acceptable.

h. Settlements Settlements 12 inches or less in depth shall be scarified and then repaired by cutting from the roadbed on each end of the settled area, filling and wheel rolling the material into the settled area providing a smooth transition to adjacent satisfactory roadbed.

i. Washouts Washouts in roadway of less than five cubic yards shall be filled and compacted by wheel rolling. Fill material shall be located within 500 feet of washout or as directed by the Contracting Officer.

3. METHOD OF MEASUREMENT

Measurement for maintenance will be “by the mile”, measured by slope distance along the centerline of the roadway. Measurement will be to the nearest one-tenth mile. No separate measurement will be made for any of the elements of work described in the foregoing

4. PAYMENT

Payment will be made for all units inspected and accepted at the unit price shown on the schedule of items.

Payments will be made under:

PAY ITEM PAY UNIT

839(01) Restore Drainage Function, Mile Without Watering

841 CUTTING ROADWAY VEGETATION (2/02)

This work consists of cutting all vegetative growth, including trees and other vegetation less than four (4) inches in diameter when measured six (6) inches above the ground, on roadway surfaces and roadsides.

2. MAINTENANCE REQUIREMENTS

a. General

1. Cut brush, trees, and other vegetation within each area treated to a maximum height of six (6) inches above the ground surface or obstruction such as rocks or existing stumps.

Cut brush, trees, and other vegetation within each area treated to a width of four

(4) feet and a height of fourteen (14) feet from edge of traveled way and away from the center line.

2. Items to remain will be marked on the ground.

3. Work may be performed either by hand or mechanically unless specifically shown in the Road Listing and SCHEDULE OF ITEMS. Self-propelled equipment is not allowed on cut and fill slopes or in ditches.

4. Correct damage to trunks of standing trees caused by Contractor's operation either by treatment with a commercial nursery sealer or by removing the tree as directed by the Government.

5. Do not operate mechanical brush cutters when there are non-contractor personnel or occupied vehicles within a hazardous distance of immediate operating area.

6. Limb trees within the cutting limits which are over four (4) inches measured six

(6) inches above ground in lieu of cutting tree.

7. When trees are limbed, cut limbs within two (2) inches of the trunk.

b. Cutting Side Vegetation

1. “Pass Mile” work will be ordered in four (4) foot increments of width regardless of slope deviations.

2. The points for establishing cutting limits are as follows:

a. Fill and daylighted (wide roadbed) section cutting commences at the edge of the traveled way and proceeds away from the road center line.

b. Drainage ditched section cutting commences at the bottom of the existing ditch and proceeds away from the road center line. Cutting on ditch foreslopes is not required.

c. Unditched cut section cutting commences at the intersection of the cutbank and the roadbed and proceeds away from center line.

3. Provide transitions between differing increments of cutting width. Accomplish transitions in a taper length of not less than fifty (50) feet nor more than seventy

(70) feet.

c. Debris

1. Material resulting from the cutting operation in excess of twelve (12) inches in length or three (3) inches in diameter is not allowed to remain on roadway slopes within the treated area, in ditches, or within water courses.

2. Remove limbs and chunks in excess of three (3) inches in any dimension from the traveled way and shoulders.

3. Materials may be scattered downslope from the roadbed, outside of the work area, and drainages.

3. MEASUREMENT

a. Measurement for cutting vegetation by the “Pass Mile” will be determined by the number of four (4) foot passes ordered and accepted. Partial increments ordered to complete the outside edge of backslope or fillslope cutting, and transitions will be measured as full passes. The length of each pass will be determined to the nearest one-tenth (0.1) mile on each side of each road.

b. No reduction in the distance measured and accepted will be made for areas where there is little or no vegetation to be cut.

4. PAYMENT

a. The accepted quantities will be paid at the unit price shown in the SCHEDULE OF

ITEMS.

b. Payment will be made under:

Pay Item Pay Unit 841(1) Cutting Side Vegetation Pass Mile

842 – CORRUGATED METAL SPILLWAYS AND FLUME (3/10)

This work consists of cleaning, reconditioning, and re-installing, or the replacement of existing corrugated metal spillway inlet assemblies, flume, and other appurtenances associated with the installation requirements.

2. MATERIALS

Materials shall be furnished by the contractor, unless otherwise indicated. Spillway inlet assemblies, flume, and connectors shall be of the type and thickness shown on Drawings 842-1 and 842-2, and shall be constructed of galvanized corrugated sheet metal meeting the requirements indicated on the drawings.

Anchors shall be as shown on Drawing 842-2.

3. MAINTENANCE REQUIREMENTS

a. Re-installation of existing overside drains:

1. Re-install inlet and starter section to the grade and flow line established by the drainage dip.

2. Adjacent earth berms shall be filled shaped, and compacted to provide a continuous drainage channel to the inlet structure.

3. Structures not approved for reuse shall be removed from Government land at the Contractor’s expense.

4. Prior to re-installing flume, ensure that voids have been filled and the embankment compacted to provide a smooth, continuous grade from the inlet to the outlet of drainage structure.

b. Replacement of existing overside drains:

1. Remove existing structure and backfill and compact any wash-outs beneath the inlet and starter.

2. Re-establish the embankment for flume replacement by backfilling wash-outs and voids, and compacting to provide a smooth, continuous grade from the inlet to the outlet of the drainage structure.

3. Install new drainage structure as shown on Drawings 842-1 and 842-2.

4. Re-establish earth berm. Shape and compact to provide a continuous drainage channel to the inlet of the drainage structure.

3. MEASUREMENT

Measurement of inlet and starter assemblies will be for each unit specified and installed as a whole. Costs included are for materials, labor for fabrication and installation, and delivery. Measurement will be made for each lineal foot of flume specified and installed.

Measurement for anchors shall be considered incidental to flume installation. Cost for disposal of removed inlets, starters, flumes, and appurtenances shall be considered incidental to the work in this specification.

4. PAYMENT

a. Accepted quantities will be paid for at the contract unit prices shown in the Schedule of Items.

b. Payment will be made under:

Pay Item Pay Unit 842(1) Clean Inlet and Starter Each 842(2) Reinstall Inlet and Starter Each 842(3) Replace Inlet and Starter, 12” Each 842(4) Replace Inlet and Starter, 18” Each 842(5) Replace Inlet and Starter, 24” Each 842(6) Replace Inlet and Starter, 36” Each 842(7) Clean Flume Linear Foot 842(8) Reinstall Flume Linear Foot 842(9) Replace Flume, 12” Linear Foot 842(10) Replace Flume, 18” Linear Foot 842(11) Replace Flume, 24” Linear Foot 842(12) Replace Flume, 36” Linear Foot