Soil Conservation Plan For The Humbug Off-Highway Vehicle ...a123.g.akamai.net/7/123/11558/abc123/forestservic... · for Trail Maintenance and Construction EM 7720-104, the Trail

FINAL REPORT 2/21/13

Soil Conservation Plan

For

The Humbug Off-Highway Vehicle Recreation Area

Happy Camp/Oak Knoll Ranger Districts

Klamath National Forest

For Information Contact: Joe Blanchard

Soil Scientist

Klamath National Forest

(530) 841-4591

2


For

The Humbug Off-Highway Vehicle Recreation Area

Introduction

This Soil Conservation Plan covers the development of the Humbug OHV area, which is

located on the Klamath National Forest (KNF) approximately 9 miles northwest of

Yreka, CA. The recent Record of Decision (July 2010) for the Travel Management EIS

designates a 5 acre staging area and approximately 21 miles of motorized trails.

Development of the staging area includes fencing the perimeter of the site, construction

of new ingress/egress, graveling the parking area, boulder placement to control vehicle

access, installation of a double vault toilet, construction of loading ramp, installation of

information boards and site identification signing, reclamation of two old

ingress/egresses, and construction of a sediment basin. Maintenance of the trail system

may include actions such as improving the trail tread, construction of minor reroutes,

improving trail drainage with the construction or reconstruction of water bars and

catchment basins, cleaning out catchment basins, and trail brushing.

This Soil Conservation Plan has been prepared to meet California State Parks - Off-

Highway Motor Vehicle Recreation Division, Grant and Cooperative Agreement

requirements for Soil Conservation for specific projects where ground disturbing

activities are proposed and for which funding is requested. The goal of the Humbug Off-

Highway Vehicle (OHV) Soil Conservation Plan is to demonstrate how the Soil

Conservation Standard is being met or will be met in the project areas funded with grant

funds. Best Management Practices (BMPs) for OHV Facilities and Use (R5 FSH

2509.22 Water Quality Management Handbook) will be used to achieve the California

State Parks 2008 Soil Conservation Standards. The soil standard specifically requires

management of OHV activities to avoid impacts to both on-site and off-site resources,

including water quality.

Work to monitor and improve the Humbug OHV trail system has been in place since

2010. A work order was completed in 2010 that installed erosion control measures and

arched culverts. From 2010 to 2012 all of the trails designated through the Travel

Management EIS were monitored as an initial assessment of trail conditions using the

GYR form (see Appendix A and B form details). Results of this initial survey were used

to prioritize future maintenance and monitoring needs.

Protocol for assessment, maintenance and monitoring are identified below.

Protocol for Assessment:

A. Water and mechanical erosion protocols will be followed as outlined in the U.S.

Forest Service Revised OHV Trail Monitoring Form (GYR Form) and Training

Guide, July 30, 2004. The GYR form will be used to meet assessment protocols.

(See GYR Form for rating definitions in Appendix B)

B. Water and sediment control measures would be assessed using the GYR Form.

C. Tread condition will be assessed using the GYR Form.

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D. Off-site impacts due to water and wind carried sediments will be assessed by

visual inspections of boundaries, estimates of quantities will be performed if any

are observed to determine if significant impacts are occurring.

E. Watercourse crossings will be assessed using the GYR Form.

Protocol for Maintenance:

A. In consideration of A through E above: Maintenance work will be done in

accordance with the BMPs 4-7.1-4-7.9 as described in the R5 FSH Handbook

2509.22, the Trail Management Handbook FSH 2309.18, Standard Specifications

for Trail Maintenance and Construction EM 7720-104, the Trail Construction and

Maintenance Notebook 0723-2806-MTDC, and the maintenance standards and

guidelines in A Field Evaluation of the Use of Small Trail Tractors to Maintain

and Construct OHV Trails on National Forests in California, USDA-Forest

Service Pacific SW Region, August 22, 2001

B. Maintenance schedules will be established utilizing monitoring reports developed

as a result of the GYR and TRACS trail condition surveys and other periodic

inspections.

Protocol for Monitoring:

A. The objectives for monitoring to determine:

a. Extent and severity of erosion occurring.

b. Conditions or combination of conditions causing accelerated erosion.

c. Where erosion is occurring.

B. Monitoring parameters include:

a. Informal monitoring of conditions by volunteers, visitors, and staff.

b. Formal monitoring by trained staff during inspections of specific trails

using the GYR Form, photo-points, and trail logs.

c. Formal monitoring by trained staff of open water crossings using the GYR

Form.

C. Monitoring site selection will be determined by:

a. Past monitoring results and available budgets. Note: Staff time for

monitoring may be funded through the OHV Ground Operations grant

b. Past maintenance records and institutional knowledge of past practices and

occurrences.

c. Results from the Initial assessment of Humbug OHV Trails and Open

Riding Area.

D. Monitoring schedules will be determined by:

a. Known historic weather patterns.

b. Visitor use patterns.

c. Availability of trained staff.

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E. Data collection will be performed by staff that has been trained by the Klamath

National Forest staff to ensure quality assurance/quality control and compliance

with USFS standards.

F. Data management will be performed by the Klamath National Forest staff.

G. Monitoring methods for trails will consist of:

a. Monitoring methods will be followed as outlined in the U.S. Forest

Service Revised OHV Trail Monitoring Form (GYR Form) and Training

Guide, July 30, 2004 (See GYR Form in Appendix B)

b. Annual monitoring will be performed for trails that are high-risk and high

maintenance. These include any trails with sections rated in the “red”

condition class or more than half of the total length rated in the “yellow”

condition class. Also to be included in annual monitoring are trails with

stream crossings rated as “yellow” and the Humbug Open Riding Area

(See Appendix B for a list of trails included in annual monitoring).

c. Trails that have been rated as mostly in the “green” condition class are

considered more stable and will be monitored on a three year rotation (See

Appendix B for a rotation schedule).

H. Monitoring methods for the Humbug Open Riding OHV Area will consist of:

a. Photo points of the parking area, sediment basin, and hill slope above the

parking area

b. Checklist for the following items:

1. Sediment basin is functioning to trap erosion from hillslope and

no sediment is leaving the Open Riding Area.

2. No evidence of hazardous spills in the parking area

3. Sanitation facilities are functioning properly

Design and Construction Elements

A. Appropriate level survey and environmental review will be completed prior to

construction.

B. Work will be done in accordance with the BMPs 4-7.1-4-7.9 as described in the

R5 FSH Handbook 2509.22, the Trail Management Handbook FSH 2309.18,

Standard Specifications for Trail Maintenance and Construction EM 7720-104,

and the Trail Construction and Maintenance Notebook 0723-2806-MTDC.

Monitoring and Soil Conservation Standard Report

The monitoring report will be submitted annually. For trails selected for the yearly

monitoring report the following will be included:

A. Historical Condition; consider the previous trail improvement and monitoring

work for each trail:

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a. Humbug OHV Trail maintenance work completed by Trails Unlimited in

2010. Includes write-up, map, and photos (Details on file at the KNF

Supervisors Office).

b. Initial Assessment of all trails and the Humbug Open Riding Area from

2010 to 2012 using GYR Forms. Includes maps detailing condition of

trails as “red”, “yellow”, or “red”, Data sheets, and photos. See

Attachments A and B.

c. Any other monitoring documentation.

B. Change Analysis

a. Determine the percentage of “green”, “yellow”, and “red” condition for

each trail and compare to the Initial Assessment or most recent data.

b. Documentation of any changes to water crossings on the affected trail

system and pre and post monitoring results.

c. Documentation of any changes to drainage structures (drainage dips, water

bars, reverse grades, etc) on the affected trail system and pre and post

monitoring results.

d. When annual maintenance was last performed and justification if it was

missed.

C. Findings:

a. Document the trend in condition of trails, water crossings, and the open

riding area.

b. Assess the need for maintenance to reverse negative trends or risks to

water quality.

c. Document any maintenance or construction activities and how trails,

crossing, and the open riding area are affected

d. Document resource benefits found from any maintenance or construction

activities.

D. Conclusions:

a. Recommend maintenance or trail improvement projects for sections of

trails, crossings, the open riding area

b. Recommend immediate corrective action if adverse effects to water

quality are found. Corrective actions may include, but are not limited to:

i. Temporary or permanent erosion and sediment control treatments

ii. Barriers and signing to redistribute use

iii. Temporary closure of trails or areas until completion of corrective

action

iv. Partial or total closure and restoration of trails or areas

v. Reduction in the amount, type, or season of OHV use

c. State goals for next year.

Compliance Action Plan:

Soil and watershed conditions within OHV use areas will be protected by a variety of

different management tools. In addition to the GYR monitoring process described in the

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sections above and the appendices, these additional components are an on-going part of

the Forest’s OHV program. These components include public education through signing

and through the KNF website, enforcement of trail closures by law enforcement,

coordination with the local OHV user group, and ongoing OHV improvement projects.

Public Education:

As of Jan 1 2013, the KNF has released Motor Vehicle Use Maps (MVUM) to inform the

public of which trails are open for motorize use, including OHV use. If a route is not

shown on the MVUM, then it is not open to public motor vehicle travel. To help identify

routes that are available for motor vehicle use, signs have been placed on the entrances to

these roads and trails. However, since the MVUM includes the official information on

designation of motor vehicle routes, it is the user’s responsibility to reference the

MVUM, to stay on designated motor vehicle routes and follow terms of allowable use.

Law Enforcement:

Forest Service employees, including law enforcement employees and Forest Protection

Officers, will continually check with the public to encourage compliance and clarify

information printed on the MVUM. There will be a transition period to ensure that

information on the requirements stated on the MVUM is known by the public. The public

is asked to let their local Forest Service office know if they see some activity occurring

that does not seem to be allowed by the MVUM. The Klamath National Forest is working

with local and State governments to coordinate education and enforcement. Once the

transition period is complete, and Forest users know about the requirements stated on the

MVUM, violations will be issued. Violations of 36 CFR 261.13 are subject of a fine up to

$5,000 and/or 6 months imprisonment (18 U.S.C. 3571(e)).

Coordination with OHV User Groups:

The Forest has coordinated closely with the Siskiyou County Off-Road Riders (SCORR),

a 200 member local OHV club for many years. SCORR has been actively involved in the

Motorized Travel Management planning process since 2005. The club provided trail

inventory data, document review and comment, and assistance with the staging area

design. Eventually the Forest expects to enter into an agreement with the club for trail

maintenance.

Humbug Staging Area Development Project. In the fall of 2012, the Forest Service

initiated an environmental assessment to develop the 5 acre Humbug Open Riding Area.

The Forest Service proposes to add the following facilities within the open riding area: a

single, new entrance; a graveled parking area; a double vaulted toilet; a

loading/unloading ramp; two individual picnic/ camp sites with tables and fire rings; a

children’s riding area; signs; fencing and/or boulders to define use areas, a group picnic

area, and a sediment basin. Upon completion of NEPA, the Forest Service expects to

apply for construction funding from the California Off-Highway Motor Vehicle

Recreation Division. If successful, construction would occur in 2014.

Humbug Drainage - Trail Reroutes for Resource Protection Project. The Forest is

currently conducting an environmental analysis for this project. Five segments of

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motorized trail #5596 would be relocated (vacated) from unsustainable locations (e.g.

unmaintainable over-steepened slopes) and relocated (rerouted) in order to provide a

sustainable motorized recreation opportunity. Upon completion of NEPA, construction is

expected to occur in the fall of 2013.

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Appendix A

Initial Condition Monitoring of Humbug OHV Rec Area

The initial condition for the Humbug Off-Highway Vehicle (OHV) Recreation Area was

assessed using the Forest Service Revised OHV Trail Monitoring Form (GYR Form) and

Training Guide from 2010 to 2012 in an effort to establish a baseline condition of

motorized trails established under the Motorized Travel Management process. The results

of the initial condition assessment of the trails in the Humbug area will be used to set

priorities for yearly monitoring and maintenance. The trails that are high-risk or high

maintenance will be monitored on a yearly basis. These include any trails with sections

rated in the “red” condition class or more than half of the total length rated in the

“yellow” condition class. Also to be included in yearly monitoring are trails with stream

crossings rated as “yellow” and the Humbug Open Riding Area. Trails that have been

rated as mostly in the “green” condition class are considered more stable and will be

monitored on a three year rotation.

Initial assessment Map of OHV Trails in the Humbug drainage using GYR rating

protocol

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Summary of Initial Condition Data and Monitoring Schedule for Humbug Open Riding

OHV Area and Trails Located in the Humbug Drainage. Initial Condition Rating

Trail Number

Trail Designation

Initial Condition Monitoring Date

Length or Area

G (%)

Y (%)

R (%)

# of Y Stream Crossings

Monitor Annually?

Monitor on 3 yr rotation

Open Riding Area

Open to cross country Travel

12/12/2012

5 acres 0 X

5594 Trails Open to Vehicles 50" or Less in Width

10/30/2012

2.58 miles

88 12 0 0 X

5595 *Closed 10/30/2012

1.12 miles

12 29 59 0 X

5596 *Closed 2/24/2012 2.57 miles

72 16 12 0 X


10/30/2012

0.43 miles

54 22 24 0 X


11/14/2010

0.89 miles

64 36 0 0 X


11/14/2010

0.74 miles

48 52 0 0 X


11/14/2010

1.88 miles

81 19 0 0 X


11/14/2010

2.43 miles

79 21 0 0 X


10/30/2012

0.84 miles

62 38 0 3 X


11/1/2010 1.71 miles

89 11 0 0 X


11/1/2010 0.41 miles

78 22 0 0 X


11/1/2010 0.29 miles

100 0 0 0 X


11/27/2012

0.57 miles

80 20 0 0 X

55109 Trails Open to All Vehicles

11/27/2012

3 miles 99 1 0 0 X

*Although designated in the 2010 Motorized Travel Management Record of Decision,

these trails are currently closed until additional mitigation measures are completed.

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Results from the initial condition monitoring indicate that a majority of the OHV trails

located in the Humbug Drainage area are rated with predominantly “green” condition

class. For these trail segments water control is provided by waterbreaks to divert runoff

therefore preventing erosion on the trail surface. Additionally, sediment traps are fully

functional, tread wear is minimal, and unauthorized user-created trails are limited. Most

stream crossing were also rated in the “green” condition class, which means that the

approaches are short and have a gentle gradient, and the tread is stable with little signs of

erosion.

A few trails are rated with a high percentage of segments in the “yellow” condition class.

These trail segments either have presence of rilling on more than 1/3 of the distance

between waterbreaks, sediment traps are nearly full, or user-created unauthorized routes

are common. Stream crossing rated as “yellow” either have approaches that are short and

steep or long and gentle and minor erosion is evident. Yearly monitoring and regular

maintenance are needed to ensure that steps are taken to address “yellow” trail

conditions. The goal is to move as many segments into the “green” condition class as

possible and to prevent segments from deteriorating into a “red” condition class.

Three OHV trails in the Humbug Drainage have segments rated in the “red” condition

class. These trail segments have gully erosion due to breached or absent waterbreaks on

steep slopes. In all cases, sediment is filtered or deposited before reaching a watercourse.

These segments have not been degraded to the point where restoration is not possible

without re-routing to avoid steep sections or construction of waterbreaks. Resources such

as water quality and soil productivity have not been significantly impacted by these trail

segments, but steps need to be taken to fix these issues. Currently, trails 5595 and 5596

are signed and closed to OHV vehicles until mitigations have been implemented to

protect resources. The Humbug Drainage-Trail Reroutes for Resource Protection Project

is currently being analyzed to re-route the “red” segments of trail 5596. Trail 5597 has a

short segment in “red” condition class and is currently open to OHV traffic. Gullying on

this segment is occurring as a result of breaches in two waterbreaks. A plan is in place to

repair these two waterbreaks as soon as conditions allow in the spring of 2013.

Monitoring of the Humbug OHV Open Riding Area indicates that there is no current

resource damage at this site. Photo points and a checklist are in place to monitor the

condition of the parking area, sediment basin, and hill slope above the parking area once

development of the staging area is complete.

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Appendix B

GYR Form and Data Management Methods

This document details the OHV monitoring and data management practices and

procedures to standardize and organize monitoring efforts on the Klamath National

Forest

1. Determine what trails are scheduled for monitoring according to results of initial

assessment or monitoring data from the previous year.

Results from the initial assessment indicate that five trails will be monitored on a yearly

basis until these trails fulfill the following conditions: No sections rated as “red”, less

than 50% rated as “yellow”, no stream crossing rated as “yellow”. These trails include

5595, 5596, 5597, 5599, and 55102. The Humbug Open Riding Area will also be

monitored on a yearly basis because of the high concentration of use at that site. Nine

trails were rated with mostly “green” sections and will be monitored on a three year

rotation. These trails include 5594, 5598, 55100, 55101, 55103, 55104, 55106, 55108,

and 55109. Year 1 will include trails 55103, 55104, and 55106; Year 2 will include trails

5598, 55100, and 55101; Year 3 will include trails 5594, 55108, and 55109. The yearly

total miles of trail to monitor will be 8.11 miles in year 1, 10.9 miles in year 2, and 11.85

miles in year 3.

2. For each of the trails chosen for monitoring, collect previous monitoring data from the

digital database. Results from the initial assessment are located on the shared T drive:

A line shapefile with each trail split into “green”, “yellow” or “red” sections can be found

at:

T:\FS\NFS\Klamath\Program\2500Watershed\2550SoilMgmt\WorkSpace\OHV\SoilCon

servationPlan\HumbugTrails.shp

A point shapefile with attribute data of specific monitoring results and linked photos can

be found at:

T:\FS\NFS\Klamath\Program\2500Watershed\2550SoilMgmt\WorkSpace\OHV\SoilCon

servationPlan\HumbugInitialAssessmentWaypoints.shp

3. Use the OHV Trail Condition Rating Form below, a GPS unit, and a digital camera to

conduct yearly monitoring.

4. Update the digital database with yearly monitoring data.

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OHV Trail Condition Rating Form

Trail Name _____________________ Trail No. _________ USGS Quad __________________ Begin Segment ____________________ End Segment ____________________

RATING (GYR) _____ GPS Ref ______________________________ Rated By ________ Date ________ Reviewed By __________________ Date ________ Page ___ of ___

Section B = Begin E = End

SectionLength

G-Y-R Condition

Codes Cause Codes

Trail Gradient

Crossing Approach

L R Management Codes and Comments

Photograph Number(s)

B

E

B

E

B

E

B

E

B

E

B

E

B

E

B

E

B

E

B

E

B

E

B

E

B

E

B

E

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Green Conditions Yellow Conditions Red Conditions G1 Water control is provided by enough functional

waterbreaks to divert runoff from the trail before it has the volume and velocity to cause erosion. Where present, rills occur on less than 1/3 of the distance between waterbreaks.

Y1 Waterbreaks do not divert all runoff from the trail because they are nearly filled to capacity and/or are partially breached, or spaced too widely. Where present, rills occur on more than 1/3 of the distance between waterbreaks

R1 Waterbreaks no longer divert runoff from the trail because they are full and/or have been breached, or are absent or spaced too widely. Gully or rill erosion may be present.

G2 No accelerated erosion off-trail. Runoff at

waterbreak outlets and on slopes adjacent to the trail is dispersed effectively. All sediment is filtered by vegetation or litter.

Y2 Rill erosion and/or sediment deposition occurs at waterbreak outlets and/or on slopes adjacent to the trail. All sediment is filtered or deposited before it reaches a watercourse with a scoured channel.

R2 Gully erosion occurs at waterbreak outlets or on slopes adjacent to the trail and/or sediment is transported to an intermittent or perennial watercourse.

G3 Sediment traps, where present, are all functional

and have adequate capacity for at least one season of use. Trapped sediment can be retrieved during normal maintenance.

Y3 Where present, most sediment traps are full or nearly full, but still functional. Most trapped sediment can be retrieved during normal maintenance.

R3 Where present, sediment traps have been breached and have a plume of sediment and/or a gully below the breach. Most sediment cannot be retrieved.

G4 Tread wear is minimal. Tread is generally incised

less than 6 inches. Tread wear is generally evident on less than 1/3 of the distance between waterbreaks or on less than 1/3 of the tread width.

Y4 Tread wear is evident. Tread is generally incised 6 to 12 inches and tread wear is generally evident on more than 1/3 the distance between waterbreaks and on more than 1/3 of the tread width. If present, “whoops” or “stutterbumps” and high berms are well-developed.

R4 Tread wear is severe. Tread incision is generally greater than 12 inches deep and tread wear is generally evident on the entire distance between waterbreaks. If present, deep “whoops” and “stutterbumps” force traffic off the trail.

G5 Tread width is generally no greater than 1.5 times

the design width for the designated use. Y5 Tread width is generally greater than 2 times the

design width for the designated use and appears to be increasing.

R5 Tread width is generally greater than 3 times the design width for the designated use and has caused or is causing severe resource damage.

G6 Unauthorized user-created trails are limited to

single tracks or single passes generally less than 300 feet long. Tracks are not eroded and have little effect on water control.

Y6 Unauthorized user-created trails are common, well-defined, and generally greater than 300 feet long. Water control is inadequate. Areas with resource damage can be revegetated/restored with ordinary effort.

R6 Unauthorized user-created trails have caused severe resource damage such as gully erosion, eroded hillclimbs, or extensive damage to vegetation and/or sensitive habitat. Restoration will usually require a major effort (e.g., large equipment, topsoil replacement, etc.)

G7 Approach to watercourse crossing is short and

has a gentle gradient. Tread is stable, shows little evidence of erosion, and is at design width. No damage to riparian vegetation outside the tread.

Y7 Approach to watercourse crossing is short and steep or long and gentle. Tread may show some evidence of erosion and may show evidence of widening. Minimal damage to riparian vegetation.

R7 Approach to watercourse crossing is both steep and long and/or tread is unstable and shows evidence of accelerated erosion. Approach may be widening and damaging riparian vegetation.

G8 Other: (explain in notes) Y8 Other: (explain in notes) R8 Other: (explain in notes)

Cause Codes C1 Waterbreaks not constructed to design standards

C2 Waterbreak spacing is too wide for conditions

C3 Cascading runoff from a trail or road upslope

C4 Cascading runoff from an impervious surface upslope

C5 Wet area caused by a seep or spring

C6 Excess soil moisture at time of use

C7 Trail section is poorly located (describe)

C8 Trail gradient is too steep for the type and/or amount of use occurring

C9 Segment was not designed for the type or amount of use occurring

C10 Brush or log is blocking trail

C11 Rocks or roots exposed in tread

C12 Barriers (natural or constructed) to control traffic are lacking

C13 Mechanical erosion makes maintenance ineffective

C14 Storm intensity unusual or unique for the area (not for use in deserts)

Management Codes M1 Segment is overgrown with brush

M2 Signing is inadequate to control use and protect resources

M3 Barriers (natural or constructed) are inadequate or lacking

M4 Trail is not designated for type of use occurring

M5 Rutting or vegetation damage in meadow, spring, or wet area

M6 Damage to sensitive plant habitat or other sensitive area

M7 Unauthorized traffic in dry washes

M8 Vandalism (e.g. shooting signs, destroying barriers, etc.)

M9 Users lack an awareness of need for resource protection

M10 Land management agency presence is lacking

M11 Other:

M12 Other:

M13 Other:

M14 Other:

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An example of an ArcMap screen print of Humbug OHV Trails data, zoomed in to Trail

55102. The line shapefile splits each trail into “green”, “”yellow”, or “red” sections. The

point shapefile contains specific monitoring data for each section. Many points are

hyperlinked with photos.

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An example of an ArcMap exported Attribute Table data for Trail 55102. Data from the

OHV Trail Condition Rating Form are spatial reference by being entered into the GIS

database.

Point Date GYR

Cond Code

Cause Code

Trail Slope (%)

Crossing L

Crossing R

Rated By

Comments Photo Link

55102_1

10/30/2012

G 5-15 JHB Waterbars in place. Sediment traps constructed, not yet filled in

Yes

55102_2

10/30/2012

G 5FT, 5%

50FT, 10%

JHB ephemeral stream crossing, in good condition

Yes

55102_3

10/30/2012

G 5 JHB

55102_4

10/30/2012

Y7 C7 5FT, 50%

5FT, 50%

JHB Steep approach on intermittent crossing

Yes

55102_5

10/30/2012

G 5 JHB

55102_6

10/30/2012

Y7 C7 15FT, 5%

15FT, 5%

JHB Grantic soil moved 5ft into channel

Yes

55102_7

10/30/2012

G 5-25 JHB Restoration area-unathorized trail well marked and effectively blocked

Yes

55102_8

10/30/2012

Y6 C12 20FT, 3%

100FT, 5%

JHB unathorized hillclimb trail takes off near crossing and has 50% slopes. Needs to be marked and blocked

Yes

55102_9

10/30/2012

Y4 C12 10 JHB 6" ruts caused by truck traffic on trail

Yes

55102_10

10/30/2012

G 15 JHB

55102_11

10/30/2012

Y1 C2 20 JHB Water channeled in a gully (looks like remnant from before trail work)

Yes

55102_12

10/30/2012

Y1 C2 15-20

JHB Not enough waterbreaks to prevent rill erosion on trail

Yes

55102_13

10/30/2012

Y1 C2 20 JHB Not enough waterbreaks to prevent rill erosion on trail

Yes

55102_14

JHB

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Documents

Soil Conservation Plan For The Humbug Off-Highway Vehicle ...a123.g.akamai.net/7/123/11558/abc123/forestservic... · for Trail Maintenance and Construction EM 7720-104, the Trail