Appendix C

LEROUX EAST IRSC

TABLE OF CONTENTS

1. Title Sheet 1 Page(s)

2. Table of Contents 1 Page(s)

Road Maintenance

1. General Notes 1 Page(s)

2. Road Length Tabulation 1 Page(s)

3. Road Maintenance Summary 2 Page(s)

4. Road Maintenance Appraisal 3 Page(s)

5. Road Work Descriptions 11 Page(s)

6. Drawing Details and Maps 5 Page(s)

7. Road Maintenance Estimate 1 Page(s)

8. Network2000 Reports and Summaries 6 Page(s)

9. Road Maintenance T-Specs 32 Page(s)

5.4 Road Maintenance

General Notes:

1. All roads specified for T-805 ROAD GRADING shall conform to timber sale road maintenance standards. Contractor shall maintain all out-sloped drains and lead-off ditchditches per specifications.

2. Berms of materials or other obstructions caused by maintenance operations shall be removed prior to the end of each day’s operations and are not to remain overnight, weekends and holidays. If, due to weather conditions or equipment breakdowns, berms or obstructions cannot be removed, they shall be signed as a hazard and visibly illuminated at night, per the Manual on Uniform Traffic Control Devices (MUTCD) requirements.

3. Contractor's equipment provided for the performance of the work shall be of the appropriate size, type, and number and the Contractor's equipment shall be in good working condition and suitable for the work required. Operators shall be competent and experienced in the operation of the equipment. Equipment shall have safety signing and appurtenances required by OSHA, such as Rollover Protection Structures (ROPS), fire suppression devices, lights and slow-moving vehicle signs. The equipment used for blading shall be a diesel, tandem drive motor grader of at least 150 horsepower. Grading equipment must be capable of cutting, crowning, and shaping operations necessary to successfully perform the tasks.

ACRONYMS:

AGG – Aggregate Surfacing AASHTO – American Association of State and Highway Transportation Officials CCF – Cunit CMP – Corrugated Metal Pipe CWFS – Cooperative Work Forest Service CY – Cubic Yard DE – Dead End EX – Existing FRD – Flagstaff Ranger District FSH – Forest Service Handbook FSSS – Forest Service Supplemental Specs NFSR – Forest System Road GIS – Geographical Information System IRSC – Integrated Resource Service Contract ML – Maintenance Level MP – Mile Post MTC – Maintenance MUTCD – Manual on Uniform Traffic Control Devices NAT – Native Surfacing NF – National Forest OSHA – Occupational Safety and Health Administration PAV – Paved Surfacing POL – Products Other Than Logs ROPS – Rollover Protection Structure RTM – Round Trip Minutes SRR – Surface Rock Replacement TS – Timber Sale USDA – U.S. Department of Agriculture

ROAD LENGTH TABULATION

ROAD MAINTENANCE

LEVEL TERMINUS TO TERMINUS MILES

171 ML3 649 222 3.31

222 ML3 US-180 171 6.39

516 ML4 US-180 M.P. 5.80 5.8

522 ML2 516 9215L 0.23

766A ML1 M.P. 0.24 M.P. 0.54 0.3

9008U ML1 516 M.P. 0.05 0.05

9131X ML2/1 516 766A 0.42

9215M (S) ML1 516 M.P. 0.15 0.15

9215R ML1 M.P. 0.13 M.P. 0.25 0.12

9215P ML1 516 M.P. 0.06 0.06

TOTAL 16.83

C(T)5.31# – ROAD MAINTENANCE REQUIREMENTS. (9/04) Contractor shall maintain roads in accordance with the following Contract Road Maintenance Requirements Summary:

Pre-Haul Road Maintenance Requirements Summary – Leroux East IRSC

Road Termini Miles Applicable Road Maintenance Specifications

From To T803 T805 T807 T808 T810 T811 T814 171 649 222 3.31 C C C

222 US-180 171 6.39 C C C

516 US-180 M.P. 5.80 5.8 C C C

522 516 9215L 0.23 C C C C

766A M.P. 0.24 M.P. 0.54 0.3 C C C 9008U 516 M.P. 0.05 0.05 C C 9131X 516 766A 0.42 C C 9215M

(S) 516 M.P. 0.15 0.15 C C 9215R M.P. 0.13 M.P. 0.25 0.12 C C 9215P 516 M.P. 0.06 0.06 C C C = Contractor Performance Item, D= Deposit to Forest Service, D3= Deposit to Third Party, O= Optional Item

During-Haul Road Maintenance Requirements Summary – Leroux East IRSC

Road Termini Miles Applicable Road Maintenance Specifications

From To T803 T805 T807 T808 T810 T811 T814 171 649 222 3.31 C C C

222 US-180 171 6.39 C C C

516 US-180 M.P. 5.80 5.8 C C C

522 516 9215L 0.23 C C C

766A M.P. 0.24 M.P. 0.54 0.3 9008U 516 M.P. 0.05 0.05 9131X 516 766A 0.42 9215M

(S) 516 M.P. 0.15 0.15 9215R M.P. 0.13 M.P. 0.25 0.12 9215P 516 M.P. 0.06 0.06 C = Contractor Performance Item, D= Deposit to Forest Service, D3= Deposit to Third Party, O= Optional Item

Post-Haul Road Maintenance Requirements Summary – Leroux East IRSC

Road Termini Miles Applicable Road Maintenance Specifications

From To T803 T805 T807 T808 T810 T811 T814 171 649 222 3.31 C C C

222 US-180 171 6.39 C C C

516 US-180 M.P. 5.80 5.8 C C C C

522 516 9215L 0.23 C C C

766A M.P. 0.24 M.P. 0.54 0.3 C 9008U 516 M.P. 0.05 0.05 9131X 516 766A 0.42 C 9215M

(S) 516 M.P. 0.15 0.15 C

9215R M.P. 0.13 M.P. 0.25 0.12 C 9215P 516 M.P. 0.06 0.06 C

C = Contractor Performance Item, D= Deposit to Forest Service, D3= Deposit to Third Party, O= Optional Item

NOTES:

Road Work Descriptions

Leroux East IRSC

1. All road maintenance work shall be done in accordance with Coconino National Forests Best Management Practices for Road Maintenance.

2. Maintenance Specification T-808 SURFACE REPAIR shall be performed using commercially sourced Pit Run or Cinders for ML-2 roads or from 222 FS pit if approved. All surfacing materials shall meet Forest Service specifications.

Road # 171 Maintenance Level 3 Sale Name Leroux East IRSC Traveled Way 12’ minimum, or existing width Road Length: 3.31 mi

Mile Post Work Description

0.00 Maintain existing junction with NFSR 649. Maintain all existing drainage features and structures including those not listed. Protect in place all existing cattle guards, fences, route markers, signs, or other structures from Mile Post 0.00 to 3.31.

0.31 Protect in place existing transition between pavement and aggregate road surfaces. Begin Maintenance Spec T-805 ROAD GRADING, T-810 DITCH MAINTENANCE pre, during, and post haul.

0.40 Maintain existing junction with NFSR 9229F on the left.

0.45 Protect in place existing gate.

0.49 Maintain existing lead-off ditch to the right. Suitable material to be brought back onto the road.

0.63 Maintain existing lead-off ditch to the left. Suitable material to be brought back onto the road.

0.75 Maintain existing lead-off ditch to the left. Suitable material to be brought back onto the road.

0.88 Maintain existing lead-off ditch to the left. Suitable material to be brought back onto the road.

0.93 Maintain existing 18” squash CMP WITH T-811 DRAINAGE

STRUCTURES.

0.96 Maintain existing 24” squash CMP WITH T-811 DRAINAGE

STRUCTURES.

1.07 Maintain existing junction with NFSR 222A on the right.

1.09 Maintain existing 18” CMP WITH T-811 DRAINAGE

STRUCTURES.

1.13 Maintain existing lead-off ditch to the left. Suitable material to be brought back onto the road.

1.16 Maintain existing lead-off ditch to the left. Suitable material to be brought back onto the road.

1.19 Maintain existing lead-off ditch to the right. Suitable material to be brought back onto the road.

1.37 Maintain existing lead-off ditch to the right. Suitable material to be brought back onto the road.

1.47 Maintain two existing 24” squash CMPs WITH T-811 DRAINAGE

STRUCTURES.

1.71 Maintain existing junction with NFSR 6796 on the left. Maintain existing junction with NFSR 9231Q on the right. CAUTION: Gas Pipeline crosses under road.

1.77 Maintain existing 18” squash CMP WITH T-811 DRAINAGE

STRUCTURES.

1.82 Maintain existing lead-off ditch to the left. Suitable material to be brought back onto the road.

1.84 Maintain existing lead-off ditch to the left. Suitable material to be brought back onto the road.

1.91 Maintain existing lead-off ditch to the right. Suitable material to be brought back onto the road.

1.93 Maintain existing lead-off ditch to the left. Suitable material to be brought back onto the road.

1.98 Maintain existing lead-off ditch to the left. Suitable material to be brought back onto the road.

2.11 Maintain existing lead-off ditch to the left. Suitable material to be brought back onto the road.

2.15 Maintain existing lead-off ditch to the left. Suitable material to be brought back onto the road.

2.22 Maintain existing lead-off ditch to the left. Suitable material to be brought back onto the road.

2.25 Maintain existing junction with NFSR 9001P on the right. Maintain existing 18” squash CMP WITH T-811 DRAINAGE STRUCTURES.

2.29 Maintain existing lead-off ditch to the left. Suitable material to be brought back onto the road.

2.35 Maintain existing lead-off ditch to the right. Suitable material to be brought back onto the road.

2.36 Maintain existing lead-off ditch to the left. Suitable material to be brought back onto the road.

2.42 Maintain existing lead-off ditch to the right. Suitable material to be brought back onto the road.

2.49 Maintain existing lead-off ditch to the left. Suitable material to be brought back onto the road.

2.66 Maintain existing lead-off ditch to the left. Suitable material to be brought back onto the road.

2.69 Maintain existing junction with NFSR 171E on the left.

2.74 Maintain existing lead-off ditch to the left. Suitable material to be brought back onto the road.

2.80 Maintain existing turnout on the left.

2.86 Maintain existing lead-off ditch to the left. Suitable material to be brought back onto the road.

2.94 Maintain existing turnout on the left.

3.02 Maintain existing junction with NFSR 9007N on the right. Maintain existing junction with NFSR 160 on the left. CAUTION: Gas Pipeline crosses under the road.

3.03 Protect in place existing cattle guard.

3.04 Maintain existing 18” squash CMP WITH T-811 DRAINAGE

STRUCTURES.

3.10 Maintain existing lead-off ditch to the left. Suitable material to be brought back onto the road.

3.17 Maintain existing lead-off ditch to the left. Suitable material to be brought back onto the road.

3.20 Maintain existing 18” squash CMP WITH T-811 DRAINAGE

STRUCTURES.

3.28 Maintain existing lead-off ditch to the right. Suitable material to be brought back onto the road.

3.31 Maintain existing junction with NFSR 222 on the right. End Maintenance Spec T-805 ROAD GRADING, T-810 DITCH MAINTENANCE pre, during, and post haul.

Road # 222 Maintenance Level 3 Sale Name Leroux East IRSC Traveled Way 12’ minimum, or existing width Road Length: 6.39 mi

Mile Post Work Description

0.00 Maintain existing junction with US-180. Begin Maintenance Spec T- 805 ROAD GRADING, T-810 DITCH MAINTENANCE pre, during, and post haul. Maintain all existing drainage features and structures including those not listed. Protect in place all existing cattle guards, fences, route markers, signs, or other structures from Mile Post

0.00 to 6.39.

0.01 Maintain existing 24” CMP WITH T-811 DRAINAGE

STRUCTURES.

0.03 Maintain existing 24” CMP WITH T-811 DRAINAGE

STRUCTURES.

0.07 Protect in place existing gate.

0.29 Maintain existing 24” CMP WITH T-811 DRAINAGE

STRUCTURES.

0.41 Maintain existing lead-off ditch to the right. Suitable material to be brought back onto the road.

0.47 Maintain existing 24” CMP WITH T-811 DRAINAGE

STRUCTURES.

0.59 Maintain existing 24” squash CMP WITH T-811 DRAINAGE

STRUCTURES.

0.66 Maintain existing 18” squash CMP WITH T-811 DRAINAGE

STRUCTURES.

0.70 Protect in place existing cattle guard.

0.79 Maintain existing 24” CMP WITH T-811 DRAINAGE

STRUCTURES.

0.85 Maintain existing 24” CMP WITH T-811 DRAINAGE

STRUCTURES.

0.87 Maintain existing lead-off ditch to the left. Suitable material to be brought back onto the road.

1.00 Maintain existing 24” CMP WITH T-811 DRAINAGE

STRUCTURES.

1.06 Maintain existing lead-off ditch to the left. Suitable material to be

1.13 Maintain existing 24” CMP WITH T-811 DRAINAGE

STRUCTURES.

1.18 Maintain existing lead-off ditch to the right. Suitable material to be brought back onto the road.

1.23 Maintain existing lead-off ditch to the left. Suitable material to be brought back onto the road.

1.27 Maintain existing lead-off ditch to the right. Suitable material to be brought back onto the road.

1.33 Maintain existing 24” CMP WITH T-811 DRAINAGE

STRUCTURES.

1.49 Maintain existing lead-off ditch to the left. Suitable material to be brought back onto the road.

1.55 Maintain existing lead-off ditch to the left. Suitable material to be brought back onto the road.

1.57 Maintain existing junction with NFSR 519 on the left.

1.67 Maintain existing lead-off ditch to the left. Suitable material to be brought back onto the road.

1.74 Maintain existing lead-off ditch to the right. Suitable material to be brought back onto the road.

1.77 Maintain existing 24” CMP WITH T-811 DRAINAGE

STRUCTURES.

1.93 Maintain existing 24” CMP WITH T-811 DRAINAGE

STRUCTURES.

1.97 Maintain existing junction with NFSR 9230W on the right.

2.05 Maintain existing 18” CMP WITH T-811 DRAINAGE

STRUCTURES.

2.13 Maintain existing lead-off ditch to the right. Suitable material to be brought back onto the road.

2.21 Maintain existing 24” CMP WITH T-811 DRAINAGE

STRUCTURES.

2.22 Maintain existing lead-off ditch to the right. Suitable material to be brought back onto the road.

2.33 Maintain existing lead-off ditch to the left. Suitable material to be brought back onto the road.

2.47 Maintain existing lead-off ditch to the right. Suitable material to be brought back onto the road.

2.55 Maintain existing lead-off ditch to the left. Suitable material to be

2.64 Maintain existing lead-off ditch to the right. Suitable material to be

2.72 Maintain existing junction with NFSR 222B on the right.

2.74 Maintain existing 18” CMP WITH T-811 DRAINAGE

STRUCTURES. Protect in place existing range tank on the left.

2.85 Maintain existing junction with NFSR 9007N on the left. CAUTION:

Gas Pipeline crosses under road.

2.90 Maintain existing 18” CMP WITH T-811 DRAINAGE

STRUCTURES.

2.94 Maintain existing junction with NFSR 9232R on the right.

2.96 Maintain existing 28” CMP WITH T-811 DRAINAGE

STRUCTURES.

3.06 Maintain existing junction with NFSR 9007N on the left and right.

CAUTION: Gas Pipeline crosses under road.

3.15 Maintain existing 18” CMP WITH T-811 DRAINAGE

STRUCTURES.

3.26 Maintain existing lead-off ditch to the left. Suitable material to be brought back onto the road.

3.34 Maintain existing lead-off ditch to the left. Suitable material to be brought back onto the road.

3.37 Maintain existing lead-off ditch to the left. Suitable material to be brought back onto the road.

3.42 Maintain existing 18” CMP WITH T-811 DRAINAGE

STRUCTURES.

3.53 Maintain existing 18” CMP WITH T-811 DRAINAGE

STRUCTURES.

3.61 Maintain existing 18” CMP WITH T-811 DRAINAGE

STRUCTURES.

3.67 Maintain existing 18” CMP WITH T-811 DRAINAGE

STRUCTURES.

3.69 Maintain existing junction with NFSR 222A on the left.

3.79 Maintain existing 18” CMP WITH T-811 DRAINAGE

STRUCTURES.

3.80 Maintain existing junction with NFSR 9007N on the right.

CAUTION: Gas Pipeline crosses under road.

3.84 Protect in place existing cattle guard. Maintain existing junction with

NFSR 160 on the left.

3.92 Maintain existing lead-off ditch to the left. Suitable material to be

3.94 Maintain existing 18” CMP WITH T-811 DRAINAGE

STRUCTURES.

3.96 Maintain existing lead-off ditch to the left. Suitable material to be brought back onto the road.

4.26 Maintain existing lead-off ditch to the left. Suitable material to be brought back onto the road.

4.42 Maintain existing lead-off ditch to the left. Suitable material to be brought back onto the road.

4.59 Maintain existing 18” CMP WITH T-811 DRAINAGE

STRUCTURES.

4.84 Maintain existing 18” squash CMP WITH T-811 DRAINAGE

STRUCTURES.

5.15 Maintain existing 18” CMP WITH T-811 DRAINAGE

STRUCTURES.

5.43 Maintain existing 18” CMP WITH T-811 DRAINAGE

STRUCTURES.

5.52 Maintain existing lead-off ditch to the left. Suitable material to be brought back onto the road.

5.61 Maintain existing 18” CMP WITH T-811 DRAINAGE

STRUCTURES.

5.89 Maintain existing 18” CMP WITH T-811 DRAINAGE

STRUCTURES.

6.07 Maintain existing lead-off ditch to the right. Suitable material to be brought back onto the road.

6.15 Maintain existing lead-off ditch to the left. Suitable material to be brought back onto the road.

6.39 Maintain existing junction with NFSR 171 on the left and right. End Maintenance Spec T-805 ROAD GRADING, T-810 DITCH MAINTENANCE pre, during, and post haul.

Road # 516 Maintenance Level 4 Sale Name Leroux East IRSC Traveled Way 24’ existing width Road Length: 5.80 mi

Mile Post Work Description

0.0 Maintain existing junction with US-180. Begin T-807 SURFACE REPAIR (BITUMINOUS) pre and post haul. Use premixed cold patch. Begin T-810 DITCH MAINTENANCE pre haul. Begin T-803 PAVEMENT CLEANING, T-810 DITCH MAINTENANCE during and post haul. Maintain all existing asphalt and drainage features and structures including those not listed. Protect in place all existing guardrails, signs, markers, and other structures from Mile Post 0.00 to 5.80.

5.80 End T-807 SURFACE REPAIR (BITUMINOUS) pre and post haul.

End T-810 DITCH MAINTENANCE pre haul. End T-803 PAVEMENT CLEANING, T-810 DITCH MAINTENANCE during and post haul.

Road # 522 Maintenance Level 2 Sale name Leroux East IRSC Traveled Way 12’ minimum, or existing width Road Length: 0.23 mi

Mile Post Work Description

0.00 Maintain existing junction with NFSR 516. Begin Maintenance Spec T-805 ROAD GRADING, T-810 DITCH MAINTENANCE pre, during, and post haul. Maintain all existing drainage features and structures including those not listed. Protect in place all existing cattle guards, fences, route markers, signs, or other structures from Mile Post 0.00 to 0.23.

0.02 Begin T-808 SURFACE REPAIR Section 808.02, placing material in a 6” lift (compacted depth) pre haul.

0.05 End T-808 SURFACE REPAIR Section 808.02, placing material in a 6” lift (compacted depth) pre haul.

0.23 End work at junction with NFSR 9215L on the right. End

Maintenance Spec T-805 ROAD GRADING and T-810 DITCH MAINTENANCE pre, during and post haul.

Road # 766A Maintenance Level 1 Sale name Leroux East IRSC Traveled Way 12’ minimum, or existing width Road Length: 0.30 mi

Mile Post Work Description

0.24 Begin Maintenance Spec T-805 ROAD GRADING, T-810 DITCH

MAINTENANCE pre haul. T-814 CLOSURE DEVICE post haul.

Location to be determined by Forest Service. Maintain all existing drainage features and structures including those not listed. Protect in place all existing cattle guards, fences, route markers, signs, or other structures from Mile Post 0.24 to 0.54.

0.43 Junction with NFSR 9131X.

0.46 Maintain existing 18” CMP WITH T-811 DRAINAGE

STRUCTURES.

0.54 End Maintenance Spec T-805 ROAD GRADING, T-810 DITCH

MAINTENANCE pre haul.

Road # 9008U Maintenance Level 1 Sale name Leroux East IRSC Traveled Way 12’ minimum, or existing width Road Length: 0.05 mi

Mile Post Work Description

0.00 Junction with NFSR 516. Begin Maintenance Spec T-805 ROAD GRADING and T-811 DRAINAGE STRUCTURES pre haul.

Maintain all existing drainage features and structures including those not listed. Protect in place all existing cattle guards, fences, route markers, signs, or other structures from Mile Post 0.00 to 0.05.

0.05 End Maintenance Spec T-805 ROAD GRADING and T-811

DRAINAGE STRUCTURES pre haul.

Road # 9131X Maintenance Level 2/1 Sale name Leroux East IRSC Traveled Way 12’ minimum, or existing width Road Length: 0.42 mi

Mile Post Work Description

0.00 Maintain existing junction with NFSR 516. Begin Maintenance Spec T-805 ROAD GRADING and T-811 DRAINAGE STRUCTURES pre haul. T-814 CLOSURE DEVICE post haul. Location to be determined by Forest Service. Maintain all existing drainage features and structures including those not listed. Protect in place all existing cattle guards, fences, route markers, signs, or other structures from Mile Post 0.00 to 0.42.

0.42 Junction with NFSR 766A. End Maintenance Spec T-805 ROAD GRADING and T-811 DRAINAGE STRUCTURES pre haul.

Road # 9215M (S) Maintenance Level 1 Sale name Leroux East IRSC Traveled Way 12’ minimum, or existing width Road Length: 0.15 mi

Mile Post Work Description

0.00 Begin Maintenance Spec T-805 ROAD GRADING and T-811

DRAINAGE STRUCTURES pre haul. T-814 CLOSURE DEVICE post haul. Location to be determined by Forest Service. Maintain all existing drainage features and structures including those not listed.

Protect in place all existing cattle guards, fences, route markers, signs, or other structures from Mile Post 0.04 to 0.15.

0.15 End Maintenance Spec T-805 ROAD GRADING and T-811

Road # 9215R Maintenance Level 1 Sale name Leroux East IRSC Traveled Way 12’ minimum, or existing width Road Length: 0.12 mi

Mile Post Work Description

0.13 Begin Maintenance Spec T-805 ROAD GRADING and T-811

DRAINAGE STRUCTURES pre haul. T-814 CLOSURE DEVICE post haul. Location to be determined by Forest Service. Maintain all existing drainage features and structures including those not listed.

Protect in place all existing cattle guards, fences, route markers, signs, or other structures from Mile Post 0.13 to 0.25.

0.25 End Maintenance Spec T-805 ROAD GRADING and T-811

DRAINAGE STRUCTURES pre haul.

Road # 9215P Maintenance Level 2 Sale name Leroux East IRSC Traveled Way 12’ minimum, or existing width Road Length: 0.06 mi

Mile Post Work Description

0.00 Junction with NFSR 516. Begin Maintenance Spec T-805 ROAD GRADING and T-811 DRAINAGE STRUCTURES pre haul. T-814 CLOSURE DEVICE post haul. Location to be determined by Forest Service. Maintain all existing drainage features and structures including those not listed. Protect in place all existing cattle guards, fences, route markers, signs, or other structures from Mile Post

0.00 to 0.06.

0.06 End Maintenance Spec T-805 ROAD GRADING and T-811

*CLEARING LIMITS WILL BE WHICHEVER IS

GREATER: SHOULDER +6 FT OR HEEL/TOE OF

SLOPE +3 FT.

*CLEARING LIMITS WILL BE WHICHEVER IS

GREATER: SHOULDER +6 FT OR HEEL/TOE OF

SLOPE +3 FT.

CLEARING WIDTH*

TRAVELED WAY

TYPICAL ROADWAY

United States Department of Agriculture Forest Service

R3

SOUTHWESTERN REGION

CLEARING WIDTH*

TRAVELED WAY

12' MIN - 16' MAX

12' MIN - 16' MAX DITCH

PROJECT NAME

LEROUX EAST

NATURAL GROUND

ROAD TEMPLATE

4" MIN. COMPACTED DEPTH

NATURAL GROUND

3'

4" MIN. COMPACTED DEPTH

ROAD TEMPLATE

COCONINO

NATIONAL FOREST

TYPICAL CROSS-SECTION WITH AGGREGATE SURFACING

AND WITHOUT ROADWAY DITCH

TYPICAL CROSS-SECTION WITH AGGREGATE SURFACING,

CROWN, AND ROADWAY DITCH

FLAGSTAFF

RANGER DISTRICT

*CLEARING LIMITS WILL BE WHICHEVER IS

GREATER: SHOULDER +6 FT OR HEEL/TOE OF

SLOPE +3 FT.

CL

DITCH FLOW LINE

4" AGGREGATE SURFACE DRAWING TITLE

TYPICAL ROADWAY

DETAILS

CLEARING WIDTH*

TRAVELED WAY

12' MIN - 16' MAX

TYPICAL ROADWAY

DITCH MAINTAIN EXISTING DITCH FLOW LINES

TO ENSURE POSITIVE DRAINAGE AWAY

FROM THE EXISTING INTERSECTING

ROAD.

DATE

ARCHIVE NO.

3'

4" MIN. COMPACTED DEPTH

NATURAL GROUND

ROAD TEMPLATE

TYPICAL CROSS-SECTION WITH AGGREGATE SURFACING

INTERSECTING ROAD

INTERSECTION GRADING AND SHAPING

DESIGNER

T CONNOLLY

DRAWN

T CONNOLLY

CHECKED

S UNTALAN

DWG SHEET NO.

AND ROADWAY DITCH

PROJECT NO.

SHEET 1 OF 3

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CLEARING 15' (TYP.)

NATURAL GROUND

United States Department of Agriculture Forest Service

R3

SOUTHWESTERN REGION

GRADE

EX. SHOULDER

GRADE

3:1

SLOPE

TOP OF CUT

* DITCH

SHOULDER

INSTALL DITCH BLOCK

(IF NECESSARY)

GRADE

25' TRANSITION

LEAD OFF DITCH

CLEARING

12"

MIN

10'

WIDTH

FLAT BOTTOM DITCH

LEROUX EAST

COCONINO NATIONAL

FOREST

SAMPLE DITCH TYPICAL

2' MIN

INLET BASIN AS SHOWN

IN DITCH BLOCK DETAIL

CLEARING

EXCAVATED

MATERIAL

12"

FLAGSTAFF RANGER

DISTRICT

DRAWING TITLE

TYPICAL DITCH

DETAILS

WING DITCH

DATE

NOTES:

1. THE SLOPE OF LEAD-OFF DITCHES SHALL BE CONSTRUCTED TO A MINIMUM OF -2% SLOPE WITHIN THE PREVIOUSLY

EXISTING DISTURBED SOIL.

2. DITCH BLOCK WILL NOT BE REQUIRED WHEN INLET BASIN IS IN A SAG.

8"

24"

ROADBED EDGE

ARCHIVE NO.

DESIGNER

S.UNTALAN

DWG SHEET NO.

3. DITCH BLOCK ELEVATION SHALL BE 4" LOWER THAN THE ADJACENT SUBGRADE ELEVATION. COMPACTED

TO 95%±

MIN 24" MIN

OR 6"+D

DITCH BLOCK

DRAWN

S.UNTALAN

CHECKED

T.CONNOLLY

PROJECT NO.

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ROLLING DIP NOTES:

1. THE CROSS SLOPE OF THE ROADBED SHALL BE MAINTAINED

THROUGH THE DIP.

2. THE DRAIN LINE SHALL BE SKEWED OFF OF THE ROADBED TO

ALLOW POSITIVE DRAINAGE, UNLESS OTHERWISE FLAGGED.

3. FOR DIPS ON AGGREGATE SURFACE ROADS, ADD DEPTH OF

COMPACTED SURFACE TO DIMENSION (H).

4. ALL DITCHES ASSOCIATED WITH ROLLING DIP STRUCTURES SHALL

BE MAINTAINED WITHIN THE PROJECT SITE.

5. DIRECTION OF EXISTING WATER FLOW SHALL BE MAINTAINED.

DRAIN LINE

0-10% ANGLE

(H) INSIDE

10'

(H) OUTSIDE

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United States Department of Agriculture Forest Service

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SOUTHWESTERN REGION

PROJECT NAME

LEROUX EAST

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ROAD GRADE LINE

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ROLLING DIP CONSTRUCTION DIMENSIONS

TYPE "1"

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INSIDE

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Leroux Vicinity and Haul Map

WEST TO

WILLIAMS

COCONINO NATIONAL FOREST

SOUTHWEST REGION 3

Flagstaff Ranger District

Ü 0 0.5

Miles 1 2

This product is reproduced from geospatial information prepared by the Coconino National Forest. Geospatial information and GIS product accuracy may vary. Using GIS products for purposes other than those for which they were created may yield inaccurate or misleading results. Coconino National Forest reserves the right to correct, update, modify or replace GIS products without notification.

FLAGSTAFF

Legend

HAUL ROADS

1 - BASIC CUSTODIAL CARE (CLOSED)

2 - HIGH CLEARANCE VEHICLES

3 - SUITABLE FOR PASSENGER CARS

4 - MODERATE DEGREE OF USER COMFORT

CUT UNITS

NORTH TO VALLE

X

Road Maintenance Specifications for Use With Timber Sales

U.S. Department of Agriculture, Forest Service

Last Updated: June 3, 2024

[page intentionally left blank]

Contents Road Maintenance Specifications for Use With Timber Sales

U.S. Department of Agriculture, Forest Service

Contents

Change Log

Spec # Title Revision date Description of change

T-801 Vegetation Removal–Roadway 6/3/24 Full Rewrite

T-802 Vegetation Removal–Roadside 6/3/24 Full Rewrite

T-803 Pavement Cleaning 6/3/24 Full Rewrite

T-804 Bridge Deck and Curb Cleaning 6/3/24 Full Rewrite

T-805 Road Grading 6/3/24 Full Rewrite

T-806 Slide Removal and Slump Repair 6/3/24 Full Rewrite

T-807 Surface Repair (Bituminous) 6/3/24 Full Rewrite

T-808 Surface Repair (Aggregate & Native) 6/3/24 Full Rewrite

T-809 Dust Abatement 6/3/24 Full Rewrite

T-810 Ditch Maintenance 6/3/24 Full Rewrite

T-811 Drainage Structures 6/3/24 Full Rewrite

T-812 Miscellaneous Structures 6/3/24 Full Rewrite

T-813 Waterbar 6/3/24 Full Rewrite

T-814 Closure Devices 6/3/24 Full Rewrite

Table or figures Title Revision date Description of change

Figure 1 Road structure terms 6/3/24 e.g., edit existing drawing

Table 1 T–804 Bridge identification 6/3/24 e.g., full rewrite

Table 2 T–805 Compaction requirement 6/3/24 e.g., full rewrite

Table 3 T–807 Material type 6/3/24 e.g., full rewrite

Table 4 T–808 Specified material sources 6/3/24 e.g., full rewrite

Table 5 T–809 Dust abatement application rate 6/3/24 e.g., full rewrite

Figure 2 T–813 A waterbar (typical) 6/3/24 e.g., edit existing drawing

Table 6 T–814 Closure devices and locations 6/3/24 e.g., full rewrite

Figure 3 T–814 An earthen barrier 6/3/24 e.g., edit existing drawing

Preface The U.S. Department of Agriculture (USDA), Forest Service developed these maintenance specifications (T-specs) for use with Provisions C5.31# and CT5.31# of timber sale contract forms FS-2400-6 and FS-2400-6T respectively.

Definitions

Wherever the road maintenance specifications use the following terms (figure 1), the user shall interpret the intent and meaning as follows:

Base course. Material used to reinforce subgrade or, as shown on drawings, placed on subgrade to distribute wheel loads. Base course usually consists of aggregate (treated or untreated). It serves as the immediate support for the surface course and may be built directly on subgrade if no subbase is called for. The requirements for building on subgrade are more stringent than for building with a subbase.

Berm. A curb or dike constructed to prevent uncontrolled roadway runoff water from discharging onto fillslope.

Bituminous. Of or containing bitumen.

Borrow. Material taken from designated borrow sites.

Crown, inslope, and outslope. The cross slope of the roadway, which aids in drainage and traffic maneuverability.

Culvert. A conduit or passageway under a road or trail.

Drainage dip. A dip in the roadway that intercepts and diverts surface water runoff. A drainage dip does not block the movement of traffic.

Drainage structure. A manufactured structure that controls the runoff of water from the roadway, including

(but not limited to) overside drains, aprons, flumes, down drains, downpipes, and culverts.

Lead-off ditch. A ditch used to transmit water from a drainage structure or drainage dip outlet to the natural drainage area.

Maintenance activity. Items of work leading to the upkeep of a road within the right of way and necessary to sustain the road's anticipated traffic.

Maintenance specifications. Specifications that detail conditions and requirements peculiar to the individual project in addition to requirements identified in the national specifications.

Roadbed. The portion of a road between the intersection of subgrade and side slopes, excluding that portion of the ditch below subgrade. Roadbed consists of suitable native soil. It supports the base course and surface course.

Roadside. A term denoting the area adjoining the outer edge of the roadway.

Roadway. A term denoting the area consisting of the traveled way and shoulders.

Shoulder. That portion of roadway contiguous with the traveled way for accommodation of stopped vehicles, for emergency use, and lateral support of base and surface course, if any.

Slide. A concentrated deposit of soil, rock, and other debris from the cut slope, often extending onto the roadway, whether caused by mass land movement or accumulated raveling.

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.

Subbase. Consists of either compacted granular material (treated or untreated) or a compacted layer of treated soil. It may help protect the base course and surface course from intrusion of fine-grained roadbed soils, damage from frost, and accumulation of water in or below the pavement structure. The pavement structure consists of the subbase, base course, and surface coarse.

Subgrade. Top surface of roadbed upon which subbase, base course, or surface course is constructed. For roads without subbase, base course, or surface course, that portion of roadbed prepared as the finished roadway. Subgrade consists of suitable native soil (treated or untreated). It serves as the top of the roadbed where the subbase or base course is constructed.

Surface course. The material placed on the base course or subgrade to enhance traction, distribute concentrated wheel loads and resist abrasion and the effects of climate. Surface course may be referred to as surfacing. Surface course consists of an aggregate mixture that may include a binder (plastic fines or bituminous material). It must carry the traffic load, provide a smooth riding surface, and resist skidding and traffic wear while keeping water from penetrating into pavement structure.

Traveled way. That portion of roadway, excluding shoulders, used for the movement of traffic.

Turnouts. Short sections of traveled way constructed with additional width to allow for safe passing of traffic.

Waterbar. A constructed feature in the roadbed that intercepts surface runoff and diverts the water off the roadway. A waterbar is not designed to be traversable by traffic.

Water source. A place designated in individual projects for acquiring water for road maintenance purposes.

Figure 1—Road structure terms.

Sources:

• National Engineering Roads Drawing Library https://fsweb.sdtdc.wo.fs.fed.us/programs/eng/natlib/drawings/

• Road structures terms https://fsweb.sdtdc.wo.fs.fed.us/programs/eng/natlib/drawings/pdf/G1/C-GROUP_1_G1- 1_TYPICAL_SECTION_WITH_DITCH.pdf https://fsweb.sdtdc.wo.fs.fed.us/programs/eng/natlib/drawings/ https://fsweb.sdtdc.wo.fs.fed.us/programs/eng/natlib/drawings/pdf/G1/C-GROUP_1_G1-1_TYPICAL_SECTION_WITH_DITCH.pdf https://fsweb.sdtdc.wo.fs.fed.us/programs/eng/natlib/drawings/pdf/G1/C-GROUP_1_G1-1_TYPICAL_SECTION_WITH_DITCH.pdf https://fsweb.sdtdc.wo.fs.fed.us/programs/eng/natlib/drawings/pdf/G1/C-GROUP_1_G1-1_TYPICAL_SECTION_WITH_DITCH.pdf

T–801 Vegetation Removal—Roadway

801.01 Description

Work consists of removing fallen trees and snags that encroach within 5 feet of the roadway.

801.02 Maintenance Requirements

A. Deck portions of trees that meet utilization standards in A/AT2 along the roadside at locations that do not impair the traveled way or sight distance (agreed to in writing).

B. Limb sub-merchantable material and cut it into lengths for handling. Scatter the material outside ditches and drainages, off the roadway and turnouts, or at staked locations.

C. Do not leave woody debris and slash on the roadway or concentrations that may plug ditches, culverts, or drainage channels.

D. Place residual root wads in an upright position out of the clearing limits.

T–802 Vegetation Removal—Roadside

802.01 Description

Work consists of cutting and disposing of vegetation that reduces the operational capability of the road, including compromised visibility of signing, gates, or approach railings on bridges. Work also includes removing vegetation for the purpose of restoring site distance to an acceptable level.

802.02 Maintenance Requirements

A. Remove vegetative matter that reduces sight distance, impedes vehicular travel, or interferes with road maintenance operations (such as surface blading, ditch and culvert cleaning, and bridge deck and curb cleaning) to a maximum height of 6 inches and a minimum of 5 feet outside of the roadway.

B. No need to remove low shrubs and brush which do not restrict sight distance and do not impede road maintenance if the road surface can be adequately maintained without doing so. This is not applicable to bridge sites.

C. For bridge sites, remove roadway vegetation within a minimum of 20 feet from abutments as measured along the center line of the road. Cut vegetation to provide a vertical clearance of 14 feet from the road and bridge surface elevation by trimming any encumbering tree limbs.

D. Do not leave woody debris and slash on the roadway or concentrations which may plug ditches, culverts, or drainage channels.

T–803 Pavement Cleaning

803.01 Description

Work consists of removing loose material from paved traveled ways, paved shoulders, and paved turnouts.

803.02 Maintenance Requirements

A. Clean the surface to the extents of the existing pavement without obstructing surface drainage.

B. Move materials away from the road centerline on double-lane roads.

C. When paved road structure includes aggregate lateral support, pavement cleaning shall leave (as much as practicable) the aggregate in its original form and assure support material is not adversely affected.

803.03 Equipment

A. Equipment shall have the capability of removing all loose material from paved surfaces without damage to the surface. Surface damage includes but is not limited to:

a. Divots in the paved surface

b. Peeling of surface material

c. Cracking or breaking pavement edges

B. Use of hydraulic flushing equipment will not be permitted within a horizontal distance of 200 feet from a live stream, unless approved by the Forest Service.

T–804 Bridge Deck and Curb Cleaning

804.01 Description

Work consists of cleaning bridge decks and curbs.

804.02 Maintenance Requirements

A. Maintain bridges and associated components as identified on the sale area map or as indicated in table

1.

B. Bridge deck and curbs.

a. Remove debris and sediment from the bridge deck, running planks, and the top and roadside face of the curbs. Ensure that all scuppers and drainage openings on the bridge are clear and operating as intended.

b. Do not allow debris and sediment to enter the stream or stream channel.

c. Haul sediment and other debris to a disposal area designated by the Forest Service in accordance with Section T–806 Slump Removal and Slump Repair.

C. Vegetation removal.

a. Remove and dispose of vegetation at the bridge in accordance with T–802 Vegetation Removal.

Table 1—Bridge identification Bridge name Road number Milepost

NA

T–805 Road Grading

805.01 Description

Work consists of keeping a native or aggregate roadbed in a condition that facilitates traffic and provides proper drainage. It includes maintaining the crown, inslope, outslope or drainage dips of the traveled way;

maintaining turnouts and shoulders; repairing berms; and blending approach road intersections.

805.02 Maintenance

A. Road grading shall be performed as often as necessary, per C/CT 5.31, to facilitate safe use and proper drainage.

B. Road grading shall preserve the existing cross-section. Surface irregularities shall be eliminated and the surface left in a free-draining state and to a smoothness needed to facilitate traffic. On aggregate-surfaced roads, thoroughly loosen surfacing material to no less than a 2-inch depth or the depth of defects.

Scarification to facilitate cutting to the full depth of potholes or corrugations may be elected but will be considered incidental to blading. Do not scarify to a depth that will cause contamination of the surfacing.

Surface material that has been displaced to the shoulders or turnouts shall be returned to the traveled way. A grading pattern shall be established to retain surface material on the roadbed and to provide for a thorough mixing of the materials within the completed surface width.

C. Unless otherwise shown in table 2, compaction of the traveled ways will be accomplished using compaction method A and will commence immediately following blading.

a. Compaction method A: adjust the moisture content of the material to a content suitable for compaction. Fill the interstices around rock with earth or other fine material, as practical.

Operate hauling and spreading equipment uniformly over the full width of each layer until there is no visible evidence of further consolidation.

b. Compaction method B: operate a 7- to 10-ton pneumatic, steel, or equivalent vibratory roller to cover the full width three times. Adjust the moisture content of the material to a moisture content suitable for compaction. Fill the interstices around rock with earth or other fine material, as practical.

D. Smooth blading may be used as an interim measure on aggregate-surfaced roads to remove loose surfacing material from the wheel paths. Store removed materials in a recoverable windrow until blade processing (as described above) is feasible. Watering is not required for smooth blading. Accomplish smooth blading without distorting the existing cross-slope or crown of the traveled way.

E. Move and store loose surfacing materials on the high side of super-elevated curves and sections with uniform inslope or outslope. In crowned sections, store the material on either or both sides, as elected.

Windrow and place stored materials to provide not less than 12 feet of smooth traveled way on one-lane segments, or 20 feet of smooth traveled way on two-lane segments or segments with turnouts. Place holes through windrows for drainage every 500 feet or less to provide drainage.

F. Water, taken from water sources designated on the sale area map, shall be applied during blading if sufficient moisture is not present to cut, mix, or compact the surface material.

G. On native-surfaced roads, material generated under other maintenance specifications may be blended with the surface material being worked. On aggregate surfaced roads this material shall not be blended with surface or base course material unless otherwise agreed.

H. Roadway cut slopes or berms shall not be undercut, nor shall new berms be established unless otherwise agreed.

I. Berms shall be repaired by placing material, as needed to restore the berm, to reasonably blend with existing line, grade, and cross-section.

J. Drainage (rolling) dips shall be cleaned and maintained to reasonably blend with existing line, grade, and cross-section. Lead-off (lead-out) ditches shall be maintained in accordance with T-810 Ditch

Maintenance.

K. Intersecting road junctions that are not closed or restricted from vehicular use shall be bladed to assure proper blending of the two riding surfaces.

L. Rocks or other material remaining on the traveled way after the final pass that are larger than 4 inches in diameter or are larger than the maximum size of imported surfacing shall be removed. Unless otherwise designated by the Forest Service, the oversized material shall be removed and placed outside the roadway; do not obstruct drainage ways or structures. Placement into streams, lakes, or water courses will not be permitted.

M. Material resulting from work under this specification shall not remain on or in structures, such as culverts, overside drains, cattleguards, ditches, and drainage dips.

N. Material resulting from work under this specification, plus any accumulated debris, shall be removed from bridge decks and the deck drains opened.

Table 2—Compaction requirement Road number Beginning milepost Ending milepost

NA

Note: Roads listed in this table require compaction method B, as specified in 806.02-C.

T–806 Slide Removal and Slump Repair

806.01 Description

Work includes excavating, loading, hauling, placing, and compacting waste or replacement material. Work under T–806 is work that cannot be handled by a motor grader during T–805 Road Grading or T–810 Ditch

Maintenance.

806.02 Maintenance Requirements

A. Slide material, including soil, rock, and vegetative matter that encroaches into the roadway shall be removed. The slope which contributed the slide material shall be reshaped as practicable to reduce future sliding, as agreed to with the Forest Service. Slide material on the fill slope and below the roadway will not be removed unless needed for slope stability or to protect adjacent resources.

a. Surface and base courses shall not be excavated during T–806 Slide Removal operations.

b. Slide material which cannot be used for other beneficial purposes shall be placed at disposal sites shown on the sale area map or designated by the Forest Service. Compact material shall be placed in disposal sites only if required by the Forest Service.

B. Material for slump repair is from agreed upon borrow sites, placed in layers no more than 12-inches thick, and compacted in accordance with T–805 method A or other methods approved by the Forest

Service.

a. Existing aggregate surfacing shall be salvaged when practical and replaced after depressions have been filled.

b. Damaged aggregate base, aggregate surfacing, and bituminous pavement shall be repaired under

T–807 Surface Repair (Bituminous) and T–808 Surfacing Repairs.

c. Following slide removal, the roadway shall be shaped to reasonably conform to its original cross-section.

T–807 Surface Repair (Bituminous)

807.01 Description

Work consists of bituminous surface repair and includes repairing potholes or small, failed areas within the roadway. Includes preparing the area, furnishing, hauling, and placing all materials, and other work necessary for repairing the bituminous surface within the traveled way.

807.02 Maintenance Requirements

A. Unless otherwise specified, the contractor is responsible for furnishing all needed material to complete the work (table 3). Bituminous product mix type shall be hot mix, unless otherwise specified.

B. The Forest Service will mark the areas to receive bituminous surface repairs on the road surface before the contractor performs the work.

C. Soft spots and potholes require the excavation of surface and base course material necessary to reach firm, suitable material. The minimum depth of excavation shall be 2 inches and the maximum depth shall be to the top of the subgrade. The edges of the prepared hole shall be extended to form a vertical face in unfractured asphalt surfacing. Shape shall be generally circular or square, dry, and cleared of all loose material.

D. The prepared hole should be patched immediately or barricaded in accordance with the Manual on

Uniform Traffic Control Devices (MUTCD) until patched.

E. The faces of the hole shall be prepared by thoroughly applying emulsified asphalt tack coat.

F. The bituminous mixture shall be placed in layers not to exceed a compacted depth of 2 inches. Each layer shall be compacted thoroughly with hand or mechanical tampers or rollers. Compaction shall not be accomplished using equipment wheels.

G. The completed, compacted patch in the pothole shall be flush, with an allowable tolerance up to ½ inch above the level of the adjacent pavement.

H. Skin patches required for surface sealing shall uniformly distribute the bituminous mixture with feathered edges in even layers.

I. Damaged segments of asphalt berm shall be removed and the exposed ends beveled at 45 degrees from vertical. The berm foundation shall be cleaned and patched as necessary. The foundation and adjoining surfaces shall be prepared by thoroughly applying emulsified asphalt tack coat. Asphalt mix shall be placed and compacted to conform to the shape and alignment of the undamaged segment.

J. Unsuitable material shall be disposed of only at locations designated by the Forest Service or as shown on the sale area map.

Table 3—Material types Road Material type* number

NA Hot mix

516 Cold mix

*Identify material type: asphalt (hot mix or cold mix), other bituminous materials.

T–808 Surface Repair (Aggregate/Native)

808.01 Description

Work consists of repairing potholes, minor washouts, and soft areas on aggregate- or native-surfaced roads.

Includes preparing the area; removing unsuitable material; furnishing, hauling, and placing all materials; and other work necessary to make the repair and blend into the adjacent surface section to provide a uniform cross section.

808.02 Maintenance Requirements

Table 4 identifies material sources.

Prepare the area as approved by the Forest Service. Soft spots on native- or aggregate-surfaced roads shall be repaired by placing the imported material on top of the soft spot in layers until a firm surface is produced, as evident by no surface deflection under normal operating loads. Repair material shall be uniformly distributed in layers not to exceed 6 inches compacted depth. Ensure adequate moisture. Material placement shall not cause surface irregularities and shall preserve the existing cross section.

Unsuitable material shall be disposed of at locations designated by the Forest Service or shown on the sale area map.

Material provided shall be certified weed-free.

Table 4—Specified material sources Road number Material type* Source** Gradation

522 Aggregate Gov- 522 pit pit run cinders 1"minus

* Identify material type: aggregate, pit run, etc.

** Identify source of material: Government-furnished or commercial source

T–809 Dust Abatement

809.01 Description

Work consists of preparing the traveled way and furnishing and applying materials to abate dust.

809.02 Material

A. A dust abatement plan must be agreed on before hauling on roads that require dust abatement, as shown in C/CT5.31#. The plan must include the type of dust abatement material to use, the rates of application, and the frequency of applications. Table 5 shows special requirements for dust abatement that the dust abatement plan should include.

B. The sale area map designates the locations of approved water sources. The Forest Service may approve alternate water sources.

C. Dust abatement materials shall meet the following requirements:

a. Magnesium chloride liquid—ASTM D 1298, Type S, 28 percent min. by mass, specific gravity 1.29 to 1.33

b. Calcium chloride liquid—AASHTO M 144, Type L, 35 percent min. by mass

c. Calcium chloride flake—AASHTO M 144, Type S Grades 1, 2, or 3, Class A

d. Lignosulfonate liquid—Dry solids 50 percent, specific gravity 1.20 min. (ASTM D1475), pH

(ASTM E70 3.0 to 8.0)

D. Certification of magnesium or calcium chloride brine, calcium chloride flake, and lignosulfonate liquid shall be in accordance with the concentrations listed above.

809.03 Maintenance Requirements

A. Dust abatement materials shall be applied to the road surface as necessary to control road surface loss, provide for road user safety, and minimize damage to adjacent resources.

B. The traveled way shall be prepared and finished in accordance with the manufacturer’s requirements or recommendations.

C. Dust abatement materials other than water shall be applied within tolerances specified by the manufacturer.

D. Dust abatement materials shall not be applied when it is raining. Lignosulfonate and magnesium chloride shall be applied when the atmospheric temperature is 40 °F or above.

E. The designated water sources may require some work before use. Such work may include cleaning ponded areas, installing temporary weirs or sandbags, pump installation, or other items appropriate to the contractor's operations. Water source preparation requires contracting officer approval before use.

Table 5—Dust abatement application rate Road number Material type* Application rate (pounds/tons/gallons) per **

NA

* Identify material type; water, magnesium chloride, lignosulfonate, etc.

** Identify application rate; gallons per mile, pounds per mile, etc.

T–810 Ditch Maintenance

810.01 Description

Work consists of routine maintenance to provide unobstructed drainage for various types of ditches.

810.02 Maintenance Requirements

A. Maintain existing ditches by removing rock, soil, wood, and other materials to provide unobstructed flow.

B. Do not undercut backslopes during ditch maintenance operations.

C. Remove suitable material up to 4 inches in greatest dimension from the ditches and blend it into the existing native road surface…