FW-TENN 12 (1)_BigSandySWPPP.pdf

Stormwater Pollution Prevention Plan Project FW-TENN 12 (1) Rehabilitation of Big Sandy Road

(Route 12)

TENNESSEE NATIONAL WILDLIFE REFUGE (TNWR) - BIG SANDY UNIT - HENRY

AND BENTON COUNTIES, TENNESSEE

Prepared for

Federal Highway Administration

Eastern Federal Lands Highway Division

22001 Loudoun County Pkwy, Building E2, Suite 200

Ashburn, VA 20147

December 21, 2022

Prepared by

1000 Corporate Centre Dr.

Suite 250

Franklin, TN 37067-6209

STORMWATER POLLUTION PREVENTION PLAN

(SWPPP)

PROJECT FW-TENN 12(1) – REHABILITATION OF BIG

SANDY ROAD (ROUTE 12)

(Route 12)

SWPPP INFORMATION AND CERTIFICATION STATEMENTS

Project Name:

Project FW-TENN 12 (1)

Rehabilitation of Big Sandy Road

(Route 12)

Springville, Henry and Benton Counties, TN

“I certify under penalty of law that this document and all attachments were prepared by me, or under my direction or supervision. The submitted information is to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment. As specified in Tennessee Code Annotated Section 39-16-702(a)(4), this declaration is made under penalty of perjury.”

Signature of Principal Executive Officer or Authorized Agent Date Signed

I, Hannah Riether, certify that this Plan was prepared under my responsible charge.

126539

Signature PE No. Date

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Contractor’s Certification

“I certify under penalty of law that I have reviewed this document, any attachments, and the Stormwater Pollution Prevention Plan (SWPPP) referenced herein. Based on my inquiry of the construction site owner/developer identified above and/or my inquiry of the person directly responsible for assembling this Notice of Intent (NOI) and SWPPP, I believe the information submitted is accurate. I am aware that this NOI, if approved, makes the above described construction activity subject to National Pollutant Discharge Elimination System (NPDES) permit number TNR100000, and that certain of my activities on-site are thereby regulated. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations and for failure to comply with these permit requirements. As specified in Tennessee Code Annotated Section 39-16-702(a)(4), this declaration is made under penalty of perjury.”

General Contractor: ____________________________________________________________

Signed: __________________________________________________ Date: _______________

General Contractor: ____________________________________________________________

Signed: __________________________________________________ Date: _______________

General Contractor: ____________________________________________________________

Signed: __________________________________________________ Date: _______________

General Contractor: ____________________________________________________________

Signed: __________________________________________________ Date: _______________

General Contractor: ____________________________________________________________

Signed: __________________________________________________ Date: _______________

General Contractor: ____________________________________________________________

Signed: __________________________________________________ Date: _______________

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TABLE OF CONTENTS

PURPOSE

SITE BACKGROUND

EXISTING CONDITIONS

PROPOSED CONDITIONS

STORMWATER POLLUTION PREVENTION PLAN

5.1 EROSION AND SEDIMENT CONTROL PLANS

5.2 RECEIVING WATERS

5.3 OUTFALLS

5.4 SITE MANAGEMENT

5.5 STABILIZATION PRACTICES

QUALITY ASSURANCE

SPILL CONTROL AND RESPONSE PRACTICES

REPORTING AND RECORDKEEPING

ASSOCIATED SITE PERMITS

TABLES

Table 3.0-1 Waterbodies

Table 5.3-1 Outfalls

APPENDICES

APPENDIX A: Site Location Map

APPENDIX B: USDA Web Soil Survey Reports

APPENDIX C: Twice Weekly Inspection Form

APPENDIX D: Major Activity Log

APPENDIX E: Rain Gauge Log

APPENDIX F: Notice of Intent and Notice of Termination

APPENDIX G: Erosion and Sediment Control Plans

APPENDIX H: Wetland Delineation Report

APPENDIX I: Permits

APPENDIX J: Certifications

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Purpose

This Stormwater Pollution Prevention Plan (SWPPP) follows all requirements set forth within the Tennessee Department of Environment and Conservation (TDEC) Division of Water Pollution Control’s General National Pollutant Discharge Elimination System (NPDES) Permit for Stormwater Discharges of Stormwater Associated with Construction Activities (TNR100000) also known as the Construction General Permit

(CGP).

This SWPPP is submitted on behalf of Federal Highway Administration (FHWA) – Eastern Federal Lands Highway Division (EFLHD) for the proposed Project FW-TENN 12(1)-Rehabilitation of Big Sandy Road. This SWPPP pertains to the construction activities as described in this document. The responsible parties are listed below:

Owner:

Federal Highway Administration Eastern Federal Lands Highway Division 22001 Loudoun County Parkway Building E2, Suite 200 Ashburn, VA 20147 703-404-6201 Efl.fhwa@dot.gov

Federal Highway Administration Eastern Federal Lands Highway Division Yanina Kirtley, Project Manager 22001 Loudoun County Parkway Building E2, Suite 200 Ashburn, VA 20147 703-404-6201 Yanina.Kirtley@dot.gov

Federal Highway Administration Eastern Federal Lands Highway Division Alazar Feleke, Highway Design Manager 22001 Loudoun County Parkway Building E2, Suite 200 Ashburn, VA 20147 703-404-6319 Alazar.Feleke@dot.gov mailto:Efl.fhwa@dot.gov mailto:Yanina.Kirtley@dot.gov mailto:Alazar.Feleke@dot.gov

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Site:

Tennessee National Wildlife Refuge – Big Sandy Unit 1371 Wildlife Drive Springville, TN 38256 731-642-2091

Emergency 24-Hour Contact US Fish and Wildlife Services Tennessee National Wildlife Refuge – Big Sandy Unit Troy Littrell, Deputy Project Leader 731-642-2091, Ext 306 Cell: 731-336-8612 Troy_littrell@fws.gov

Or

US Fish and Wildlife Services Tennessee National Wildlife Refuge – Big Sandy Unit Barron Crawford 731-642-2091, Ext 307 Cell: 731-571-2838 barron_crawford@fws.gov

SWPPP Preparer:

AECOM

Hannah Riether, PE, TDEC Level II 1000 Corporate Centre Dr., Suite 250

Franklin, TN 37067 Phone: (615) 313-0375 hannah.riether@aecom.com

Contractor:

TBD

Point of Contact: TBD Phone: TBD

Environmental Inspector:

TBD

Point of Contact: TBD Phone: TBD mailto:Troy_littrell@fws.gov mailto:barron_crawford@fws.gov mailto:hannah.riether@aecom.com

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Site Background

The TNWR Big Sandy Unit (Site) serves as a refuge for waterfowl and other animals. Big Sandy Road provides access for visitors for a variety of activities including hunting, fishing, wildlife photography, and hiking.

Big Sandy Road is a gravel access road also known as Bennett’s Creek Road that is approximately 6.87 miles in length. Road and drainage improvements are needed on Big Sandy Road due to flooding and washouts. There is a historic site accessible off Big Sandy Rd, Mt Zion Church and Cemetery. Along with roadway improvements, parking improvements are required. Within the project limits, there were 17 streams and 9 wetlands identified in the Wetland Delineation Report (WDR) that can be found in Appendix H. Also, there are 2 ponds adjacent to the project, Robertson Lake and Farmer Pond. Big Sandy River is adjacent as well and will be impacted for shoreline stabilization.

Existing Conditions

The Site is located at Latitude 36.3894 and Longitude -88.0539. For travel to the Site by road, head north on County Route 895/Lick Creek Road from Big Sandy, TN; follow County Route 895/Lick Creek Rd for approximately 11 miles; Lick Creek Rd will then fork into Bennett’s Creek Rd and Granny’s Branch Rd; the entrance to Big Sandy Unit can be seen by turning left onto Bennett’s Creek Rd/Big Sandy Rd. The Big Sandy Unit is located in Henry and Benton counties. A Site Location Map can be found in Appendix A for reference. The map is projected onto the United States Geological Survey (USGS) Paris Landing and Poplar Creek, TN quad maps.

The existing terrain of the Site varies from flat (0.5%) to steep slopes (50%). There are many drainage features that cross or are adjacent to Big Sandy Rd. Several drainage features are regulated by TDEC and the United States Army Corp of Engineers (USACE).

There are also existing wetlands within the proposed limits of disturbance. Big Sandy Rd drains to ditches, wetlands, and streams which discharge to the Big Sandy River or to Kentucky Lake. Neither of these water bodies are listed as water with unavailable parameters due to habitat or siltation impairment. Several waterbodies within the Big Sandy Unit are Exceptional Tennessee Waters (ETW). Therefore, a storm design frequency for this evaluation will be the 5yr-24hr storm. See Table 3.0-1 for a list of the waterbodies at the Site. There are also two ponds that are adjacent to Big Sandy Road that are not listed in the table and will not be impacted by the project.

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Table 3.0-1 Waterbodies

Waterbody Name1 Abbreviated Name

Type/ Cowardin Code2

Waters Type2

Latitude / Longitude

Local Waterway

303d list for Habitat or Siltation Impairment

ETW

S-001-C-unmarked- BS-041421 Stream 01 Ephemeral/

WWC 5

36.364959

88.032257

Kentucky Lake

No No

S-002-C-001-BS-

041421 Stream 02 Intermittent 2

36.366653, 88.035732

Kentucky Lake

No No

S-003-C-003-BS-

041421 Stream 03 Intermittent 2 36.368688, -88.03667 Kentucky

Lake No No

S-004-C-004-BS-

041421 Stream 04 Ephemeral 5 36.368688, -88.03667 Kentucky

Lake No No

S-005-C-005-BS-

041421 Stream 05 Ephemeral/

WWC 5

36.385019, 88.048443

Ross Branch

No Yes

S-006-C-006-BS-

041421 Stream 06 Ephemeral 2

36.387001, 88.049620

Ross Branch

No Yes

S-007-C-007&008- BS-041421 Stream 07 Ephemeral/WWC 5

36.389123, 88.050159

Robertson Lake

No Yes

S-008-C-010-BS-

041421 Stream 08 Intermittent 2

36.388591, 88.058619

Big Sandy River

No Yes

S-009-C-011-BS-

041421 Stream 09 Upland WWC 7

36.386702

88.059754

Big Sandy River

No Yes

S-010-C-012-BS-

041421 Stream 10 Perennial 2

36.383640, 88.066552

Big Sandy River

No Yes

S-011-C-013-BS-

041521 Stream 11 Upland WWC 5

36.383076, 88.068074

Big Sandy River

No Yes

S-012-C-014-BS-

041521 Stream 12 Upland WWC 5

36.381882, 88.068544

Big Sandy River

No Yes

S-013-C-015-BS-

041521 Stream 13 Upland WWC 5

36.379481, 88.067672

Big Sandy River

No Yes

S-014-C-016-BS-

041521 Stream 14 Intermittent 2

36.376761

88.067251

Big Sandy River

No Yes

S-015-C-017-BS-

041521 Stream 15 Upland WWC 7

36.371046, 88.075097

Big Sandy River

No Yes

S-016-C-018-BS-

041521 Stream 16 Ephemeral/

WWC 5

36.370319, 88.076545

Big Sandy River

No Yes

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Table 3.0-1 Waterbodies

Waterbody Name1 Abbreviated Name

Type/ Cowardin Code2

Waters Type2

Latitude / Longitude

Local Waterway

303d list for Habitat or Siltation Impairment

ETW

S-017-C-019&020- BS-041521 Stream 17 Intermittent 2

36.369051, 88.079014

Big Sandy River

No Yes

W-001-C-unmarked- BS-041421 Wetland 01 PFO 4

36.365052, 88.032154

W-002-BS-041421 Wetland 02 PFO 6 36.365487, 88.033016

W-003-BS-041421 Wetland 03 PFO 6 36.379422, 88.046709

W-004-BS-041421 Wetland 04 PFO 6 36.379359, 88.047083

W-005-C-005-BS-

041421 Wetland 05 PFO 4

36.385134, 88.048266

W-006-C-006-BS-

041421 Wetland 06 PFO 4

36.386919, 88.049484

W-007-C-012-BS-

041421 Wetland 07 PFO 4

36.383727, 88.066141

W-008-C-016-BS-

041521 Wetland 08 PFO 4

36.376787, 88.066902

W-009-C-MP5.62-

5-BS-041521 Wetland 09 PFO 6

36.366988, 88.084711

Big Sandy River N/A R2UBH 3

Start:

36.381747, 88.068874

End:

36.380318, -88.068631

--- No Yes

1 AECOM naming convention.

S-011-C-013-BS-041521

Stream-Stream # in order as observed in the field- Culvert- Culvert # as correlates to plans-Big Sandy-Date Surveyed

PFO = Palustrine Forested Wetland

2 Waters type= Based upon the Navigable Waters Protection Rule 1.TNW (a)(1)—Traditional Navigable Waters (streams, not wetlands)

2. Tributary (a)(2) – Perennial or Intermittent

3. Lakes, Ponds, Impoundments of Jurisdictional Waters (a)(3)

4. Adjacent Wetlands (a)(4)

5. Ephemeral streams - Excluded (b)(3)

6. Isolated Wetlands (b)(1) - Isolated (interstate or intrastate) waters, including isolated wetlands (wetlands or streams) 7.Upland Ditches (b)(5) - Uplands

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The Wetland and Other Waters of the US Delineation and Habitat Assessment Report can be found in Appendix H. According to the United States Department of Agriculture (USDA) Web Soil Survey, the majority of the soil within the Site are in Hydrologic Soil Groups B, D, and C/D; ranging from moderate to very slow infiltration rates. The erosion factor, also known as the K factor, for this area ranges from 0.15 to 0.49. The higher the erosion factor the more susceptible the soil is to erosion; the values can range from 0.02 to 0.69. The USDA Web Soil Survey Reports can be found in Appendix B. The existing land uses are vegetated woodlands, agricultural fields, grass vegetation, and gravel roadways.

Proposed Conditions

Big Sandy Rd improvements will consist of widening, filling in potholes, an overlay of new gravel, reconditioning roadside drainage ditches, replacing drainage culverts, shore stabilization, and reconditioning parking areas. Big Sandy Road will be widened and graded to have a crown of 3% to promote drainage. Six inches of gravel will be added to the six gravel parking lots. The placement of the parking is typically near historic markers, plaques, or lookouts. Twenty-two culverts are proposed along the project route, with most involving replacement or upsizing. Headwalls and outlet protection will be installed per the plans. An area of Big Sandy Road is adjacent to Big Sandy River and the shoreline needs protection, so riprap shore stabilization will be installed to prevent erosion to the road’s embankment. This stabilization will cover 350 linear feet (LF) of shoreline. The project limits and improvements are shown on the Erosion and Sediment Control (E&SC) plans, which are included in Appendix G. The E&SC plans consist of an overall site plan and typical phased BMPs for each type of improvement: road/ditch, culvert, and parking lot. One area including all three improvements on Big Sandy Road are shown, each with 3 stages of E&SC practices, these will illustrate the typical E&SC measures that should be applied for the different types of work. The proposed grading and ditches will not change any drainage patterns. The proposed ditches and graded slopes will be stabilized with seeding and mulch, erosion control blankets, or gravel. Tree removal will be required in some areas adjacent to the road; it will be minimized to the extent possible.

The total area to be disturbed for the Rehabilitation of Big Sandy Road is approximately 45 acres. The total area of the Big Sandy Unit is approximately 7,000 acres. The existing drainage pattens of the Site will remain the same, as ditches will only be modified to promote drainage and eliminate standing water. A 404 nationwide permit will be acquired in order to alter and work within the wet weather conveyances (WWC’s) and streams that are declared waters of the United States (WOTUS). An aquatic resource alteration permit (ARAP) will also be acquired from TDEC for the streams, wetlands, and lakes that will be impacted. Table 3.0-1 lists all the potentially impacted water features.

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Streams including wet weather conveyances will be impacted for culvert replacements and improvements. Other impacts will be from widening the road in select segments, from ditch reconditioning work, and from shore stabilization. The regrading, clearing & reconditioning, & establishing new ditches work will not discharge fill material below the Ordinary High Water Mark (OHWM) of any jurisdictional waters of the U.S by tying in to the existing grade of the jurisdictional features.

The pre-construction runoff coefficient of 0.4 will increase minimally from pre to post construction conditions. The existing conditions are a mix of woods, grass, gravel, and croplands which will be retained. Any disturbed ground will be reseeded and vegetated or graveled. There will be no addition of impervious area, and the proposed widening of Big Sandy Rd is with gravel surfacing. If supplementary best management practices (BMP’s) are necessary, they should be added to the E&SC plans and documented in the Major Activity Log in Appendix D.

The construction sequencing may vary due to preference or instruction from the contractor, owner, and engineer; however, it will generally proceed as follows:

Install stabilized construction exits;

Install temporary E&SC perimeter measures;

Perform on-site clearing and grubbing (where necessary);

Install and/or replace culverts;

Recondition drainage ditches;

Stabilize shoreline with riprap where Big Sandy Road runs along Big Sandy River (use turbidity curtain to prevent sediment migration if work is not performed in the dry);

Improve parking areas and grade as necessary;

Overlay roadway gravel;

Complete finish grading;

Implement final stabilization of disturbed soil; and

Remove all temporary E&SC measures.

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Stormwater Pollution Prevention Plan

5.1 Erosion and Sediment Control Plans

The Contractor is responsible for the implementation and maintenance of the E&SC devices. The E&SC plans, included in Appendix G, were developed as typical sections to be applied to the entire project and are shown for the following E&SC stages:

Initial Stage

The initial E&SC stage shall establish perimeter sediment control, divert off-site runoff around or through the construction site, protect existing drainage features and outfalls, prevent and control sediment from leaving the Site that may be eroded from exposed areas during initial E&SC installation, and protect existing water resources and off-site property. The following BMP’s shall be installed during this stage:

Temporary construction exit

Silt fence

Fiber Roll/Wattle

Rock check dams

Instream diversions

Pump around stream diversion

Culvert Inlet protection

Turbidity Curtain

Intermediate Stage

The Intermediate E&SC stage shall provide the interim mass grading controls (existing to proposed finished grade), protect proposed drainage features and outfalls, protect proposed pipe and drainage structure inlets, divert water resources and offsite drainage, and prevent sediment from graded areas from leaving the Site. The BMPs that were installed during the initial E&SC stage shall remain and the following should be added during the intermediate E&SC stage as necessary. For this project most BMPs will be the same as the initial stage and there will be minimal changes between the stages.

Temporary seed and mulch

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Silt fence

Sediment tubes/filter socks

Rock check dams

Instream diversions

Pump around stream diversion

Turbidity Curtain

Final Stage

The final E&SC stage shall complete any major grading activities, add measures to address final grading, shaping, topsoil installation, slope, and ditch stabilization, and remove any temporary BMP’s once the area is stabilized. The following BMPs are installed during the final stage:

Seeding with mulch

Gravel

Erosion Control Blankets

Riprap

Riprap Shore Stabilization

5.2 Receiving Waters

The 5-year, 24-hour average recurrence interval design storm will be used to design all E&SC measures unless specified below. The 5-year, 24-hour average recurrence interval design storm was selected, because the receiving streams are listed as exceptional Tennessee waters. The Site ultimately drains to Kentucky Lake and Big Sandy River. However, most of the Site drains to different tributary streams and WWC’s since it is a linear project and there are many outfalls. The different waterbodies are listed in Table 3.0-1. Typically, a 60-foot natural water quality riparian buffer zone adjacent to and on both sides of the receiving steam or wetland shall be preserved to the maximum extent practicable during construction activities. The 60-foot criteria for the width of the buffer zone can be established on an average width basis for the project, as long as the minimum width of the buffer zone is equal to or greater than 30 feet at any measured locations. A 15-foot riparian buffer is usually required for WWC’s that are WOTUS and regulated by USACE.

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At this Site however, a buffer will not be needed because the culvert work will be permitted through USACE and TDEC. 404 Water Quality and ARAP permits will be acquired for any work done in wetlands, streams, or lakes. Except for culvert replacement work and shore stabilization, there is no other activity that would occur in a water feature. For ditch reconditioning near non-permitted streams there is a buffer zone exemption. Section 4.1.2.1 of the CGP applies a buffer zone exemption for certain existing land uses. Existing uses includes parking lots and roadways. Therefore, no buffer zones are required, but disturbance will be kept to a minimum around non-permitted streams. BMPs will be used to prevent sediment from migrating into streams from reconditioned roadside ditches.

5.3 Outfalls

Outfalls are points where runoff leaves the Site as a concentrated flow in a discrete conveyance. Most outfalls are points which roadside ditches are leaving the limits of disturbance (LOD) or discharging into a stream. Table 5.3-1 lists all outfalls at the Site with the receiving water. Outfall locations are illustrated on E&SC Plan sheet M04 in Appendix G.

Table 5.3-1 Outfalls Outfall Drainage Area (AC) Receiving Water

1 2.4 Kentucky Lake 2 0.1 Kentucky Lake 3 0.2 Kentucky Lake 4 0.5 Kentucky Lake 5 0.6 Kentucky Lake

6 0.3 Kentucky Lake

7 0.5 Kentucky Lake

8 0.07 Kentucky Lake

9 0.3 Kentucky Lake

10 0.3 Kentucky Lake

11 0.2 Kentucky Lake

12 0.1 Kentucky Lake

13 0.1 Kentucky Lake

14 0.5 Kentucky Lake

15 0.9 Kentucky Lake

16 0.8 Kentucky Lake

17 0.7 Kentucky Lake

18 0.8 Kentucky Lake

19 0.4 Kentucky Lake

20 0.06 Kentucky Lake

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Table 5.3-1 Outfalls Outfall Drainage Area (AC) Receiving Water

21 2.1 Kentucky Lake

22 1.5 Kentucky Lake

23 0.09 Kentucky Lake

24 0.7 Kentucky Lake

25 0.3 Kentucky Lake

26 0.4 Kentucky Lake

27 0.3 Kentucky Lake

28 0.4 Kentucky Lake

29 0.6 Ross Branch

30 0.7 Ross Branch

31 0.4 Ross Branch

32 0.1 Ross Branch

33 1.3 Ross Branch

34 1.1 Ross Branch

35 0.09 Ross Branch

36 1.1 Ross Branch

37 2.1 Ross Branch

38 1.1 Robertson Lake 39 1.3 Robertson Lake

40 0.3 Robertson Lake

41 0.2 Big Sandy River 42 0.3 Big Sandy River

43 1.1 Big Sandy River

44 0.5 Big Sandy River

45 0.2 Big Sandy River

46 0.9 Big Sandy River

47 1.0 Big Sandy River

48 0.2 Big Sandy River

49 0.4 Big Sandy River

50 0.4 Big Sandy River

51 0.5 Big Sandy River

52 0.04 Big Sandy River

53 0.08 Big Sandy River

54 1.3 Big Sandy River

55 1.0 Big Sandy River

56 1.5 Big Sandy River

57 0.2 Big Sandy River

58 0.7 Big Sandy River

59 1.5 Big Sandy River

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Table 5.3-1 Outfalls Outfall Drainage Area (AC) Receiving Water

60 1.1 Big Sandy River

61 1.0 Big Sandy River

62 1.3 Big Sandy River

63 0.08 Big Sandy River

64 0.2 Big Sandy River

65 0.5 Big Sandy River

66 1.3 Big Sandy River

67 0.8 Big Sandy River

68 0.5 Big Sandy River

69 0.5 Big Sandy River

70 1.6 Big Sandy River

71 1.5 Big Sandy River

72 0.1 Big Sandy River

73 0.2 Big Sandy River

74 0.5 Big Sandy River

75 1.0 Big Sandy River

76 0.1 Big Sandy River

77 0.1 Big Sandy River

78 0.04 Big Sandy River

79 0.2 Big Sandy River

80 0.1 Big Sandy River

81 1.2 Big Sandy River

82 0.3 Big Sandy River

No outfalls receive greater than 5 acres of drainage area therefore no sediment basins or equivalent are required. The largest drainage area to an outfall is 2.4 acres. E&SC measures will be used to prevent sediment from leaving the LOD. Check dams will be used at outfalls where ditches leave the LOD or go into a water feature such as a stream.

Silt Fence or sediment tubes will be used to intercept sheet flow as it leaves the LOD.

5.4 Site Management

Where water is used to wash vehicles (of dust and soil) and where detergents are not used, detention and/or filtering should be provided before allowing discharge from the Site.

Litter, construction debris, and/or chemicals will be picked up and properly disposed of prior to any anticipated storm events forecasted by local weather reports. Regular litter pickup (e.g., weekly, or more often as needed) may be conducted as an adequate

(Route 12) alternate to picking up litter before forecast storm events to prevent trash entering receiving streams. Litter pickup events need to be recorded on an inspection log sheet and reported to the Erosion and Sedimentation Control representative.

All trash and construction debris from the Site shall be hauled to an approved disposal location. No construction waste material shall be buried on the Site. Employee waste and other loose materials shall be collected and properly disposed of to prevent the release of floatable material during runoff events. If clearing debris (brush and timber) is generated, it may be chipped and used as mulch on-site in accordance with state and local regulations or disposed of offsite. Contact the Project Manager for the approved method of disposing of clearing debris and/or minor amounts of soil if any is generated.

No burning of debris onsite is permitted.

Dust will be controlled by the application of water as necessary (as determined by the Environmental Inspector and Owner).

All trapped sediment will be removed for all sediment control structures prior to 50% of the design capacity being compromised.

No industrial water/wastewater discharges will occur as part of this Project. A temporary portable toilet will be located on-site. Sanitary waste will be collected from the portable units in a timely manner by a licensed waste management contractor or as required by any local regulations. The contractor will obtain all necessary permits to dispose of sanitary waste.

All hazardous waste shall be disposed of according to EPA regulations, state and/or local regulations. Contact the Project Environmental Scientist for approved method of disposing of such materials.

Material storage areas will be as small as practicable. They shall be established only in designated areas that minimize the disturbance of soil and the chance of stormwater runoff contaminated with sediment or other pollutants. Stored materials that cannot contaminate stormwater may be stored in the open. However, the lay down area for these items must be prepared so that no sediment leaves the Site.

5.5 Stabilization Practices

All temporary and permanent disturbed slopes should be stabilized within 14 days where construction has temporarily or permanently ceased. If the slopes are greater than or equal to 35%, stabilization will occur in 7 days. Disturbance of steep slopes will be minimized.

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Temporary stabilization measures are not required to be initiated within 14 days in the following circumstances:

• Temporary stabilization measures are precluded by snow cover or frozen ground conditions or adverse soggy ground conditions, or

• Soil disturbing activities will resume within 14 days on the portion of the Site.

Any of the following types of activities constitute the initiation of stabilization:

• Preparing the soil for vegetative or non-vegetative stabilization,

• Applying mulch or other non-vegetative product to the exposed area,

• Seeding or planting the exposed area,

• Starting any of the preceding stabilization activities on a portion of the area to be stabilized, but not on the entire area, and

• Finalizing arrangements to have stabilization product fully installed in compliance with the applicable deadline for completing stabilization as described below.

Note that any stockpiles of materials, debris, soils, or other erodible material that are expected to remain inactive for more than 14 days must also be stabilized by one of the mentioned methods. All stockpiles shall also be surrounded by silt fence or equivalent and checked daily for evidence of migration of materials.

Permanent stabilization must meet the following criteria to meet the terms of the CGP:

Vegetative Stabilization:

Uniform vegetation which provides 70% or more of the density of coverage that existing prior to earth disturbing activities, Vegetative cover must be perennial, Invasive species must not be used, and Non-vegetative erosion controls (e.g., mulch, rolled erosion control products) must be installed over newly seeded or planted areas as necessary to prevent erosion of the area while vegetation is becoming established.

Non-Vegetative Stabilization:

For temporary stabilization, effective stabilization methods include, but are not limited to hydromulch and erosion control blankets.

For final stabilization, effective stabilization methods include, but are not limited to, riprap, gabions, gravel, geotextiles, and pavement.

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Once final stabilization of any portion of the Site is achieved and the temporary E&SC devices are removed, this area may be marked as “permanently stabilized” on the E&SC Plan by the Environmental inspector and no inspections will be required to that portion of the Site, as stated in Section 5.5.3.11 in the CGP.

Quality Assurance

E&SC inspections will occur in accordance with the General NDPES Permit for Discharge of Stormwater Associated with Construction Activities on all unstabilized disturbed surfaces. Twice weekly inspections are required and are to be performed a minimum of 72 hours apart, unless permission is granted from TDEC due to work stoppage created by extreme weather (i.e. snow cover, ice, drought). Where sites or portions of sites have been temporarily stabilized, inspections only must be conducted once per month until construction activity resumes. Inspection requirements do not apply to definable areas that have been permanently stabilized. Changes to the inspection frequency and justification for such request must be kept onsite and included in the records. The inspections must be conducted by:

A person who successfully completed “Level 1 Fundamentals of Erosion Prevention and Sediment Control” course, A licensed professional engineer or landscape architect, A Certified Professional in Erosion and Sediment Control (CPESC), or A person who successfully completed the “Level II Design Principles for Erosion

Prevention and Sediment Controls for Construction Sites” course.

The twice weekly inspection forms can be found in Appendix C. Copies of the inspection reports will be provided to Owner/Project Manager on a weekly basis, when the sheet has been filled out, and/or when construction is complete. Any deficiencies shall be reported to Project Manager, with corrective actions as appropriate. In the event the E&SC measures are inadequate, the inadequate measure shall be corrected prior to the next precipitation event, but not more than 7 days following the inspection.

Any modifications to this SWPPP that are required in response to inspections will be implemented within 14 days following the inspection.

A site assessment is necessary for any outfall with a drainage area of 5 acres or more.

The site assessment will cover the entire disturbed area of each outfall that qualifies and will occur within 30 days of construction commencement. Site assessments can be conducted by someone with one of the following qualifications:

A licensed professional engineer or landscape architect.

A Certified Professional in Erosion and Sediment Control (CPESC).

(Route 12)

A person who successfully completed the “Level II Design Principles for Erosion Prevention and Sediment Controls for Construction Sites” course.

Areas to be inspected include structural control measures, material storage areas, disturbed areas not permanently stabilized, outfalls, where vehicles enter and exit the Site, etc. Photo documentation of inspections is encouraged as a supplement to the written record but not as a substitute. Use a separate sheet for each area or control being inspected. Inspection sheets will be maintained in a log by the Contactor.

Stormwater discharges shall not have visible floating scum, oil, or other matter or cause an objectionable color contrast in the receiving stream. If such conditions are observed, controls will be inspected and repaired or reinforced as necessary and the Project Manager should be notified immediately. If repairs or changes are made, they will be recorded on the Major Activities Log.

The official rainfall amount will be recorded at an on-site gage to be installed and maintained for the life of the construction project. Records of rainfall gage readings will be maintained in a log by the Contactor. The rain gauge log can be found in Appendix D. Copies of rain gauge logs, inspection records, and major activity log will be maintained on-site with the environmental records throughout the life of the project.

The Major Activity Log can be found in Appendix E. Copies of rainfall logs and inspection records will be provided to the Owner/Project Manager at the end of each month for the life of the project. A copy of the major activity log will be provided to the Owner/Project Manager on a monthly basis. These records will be maintained with the SWPPP for a minimum of three years after the notice to terminate coverage under the general permit has been filed.

The Engineer, Environmental inspector, and Contractor will address any unforeseen situation that is not specifically mentioned in the SWPPP. At a minimum, industry standard BMPs shall be used when addressing any new concerns.

A copy of the Notice of Coverage (NOC) under the CGP as provided by the TDEC shall be posted at the entrance to the construction site. In addition, a notice containing the location of the SWPPP, and the name and phone number of a local contact must be posted. Notices will be laminated or otherwise protected from weather.

The CGP contains additional details necessary for compliance.

Spill Control and Response Practices

Hazardous wastes and materials must have secondary containment and must be covered or stored inside to prevent contact with stormwater. Petroleum containers with a capacity of 55 gallons or more must have secondary containment. The secondary

(Route 12) containment must have a manually operated drain valve that can be locked. If stored inside, the secondary containment needs no drain. Releases to secondary containment must be cleaned up when discovered and the source of the release repaired as soon as possible. The Project Manager must be notified immediately. See reporting and record keeping requirements in Section 5.7.

Concrete and diesel are anticipated to be used or stored at the project site. In the event that any products are present that present a spill hazard, the provisions in this section and the following section will be followed.

Equipment: The Contractor shall ensure that materials and equipment necessary for spill cleanup for their respective materials shall be present on the Site at all times.

Equipment and materials shall include but not be limited to brooms, shovels, rags, absorbent materials, and plastic or metal trash containers specifically designed for this purpose. The materials and equipment necessary for spill cleanup shall be dependent upon the nature and quantity of the material stored on-site. A signed inventory sheet shall be provided to the Project Manager on a monthly basis.

Response: All spills shall be cleaned up immediately upon discovery. The Contractor shall report all spills to the Project Manager as soon as possible. See below for reporting and record keeping requirements.

Safety: All spill areas shall be kept well-ventilated, and personnel will wear appropriate protective clothing to prevent injury from contact with hazardous substances.

Reporting and Recordkeeping

In the event of a spill of oil, hazardous substances, or other pollutants, the Contractor shall notify the Project Manager and National Response Center (NRC) (800-424-8802), the Tennessee Emergency Management Agency (emergencies: 800-262-3300; non-emergencies: 800-262-3400), and the local emergency planning office (where applicable). The Project Manager shall place a write-up of the spill in the SWPPP within 14 days of the event and will coordinate with the Contractor regarding any needed plan modifications to include additional measures as necessary. The write-up shall include description of the release (i.e., quantity and type of material), date of the release, circumstances leading to the release, and steps taken to respond and/or address the release. A write up of the spill must also be submitted to the Jackson Environmental Field Office within 14 days.

If a change in project scope occurs that affects the SWPPP, the SWPPP shall be modified within seven days. If state inspectors require a modification, it shall be accomplished in a timely manner. If any routine inspection warrants a plan modification, (Route 12) the SWPPP shall be modified within seven days, and the revision shall be implemented within 14 days.

Records: The required records shall be kept on file in the construction office and the final, complete set of records shall be transferred to the Owner at the end of construction. It is required by the permit to keep records of all spills and inspections for a minimum of three years after the Notice of Termination of coverage under the permit is filed, or longer if requested by TDEC. The Notice of Termination (NOT) is to be filled out and submitted to the TDEC upon final stabilization of the Site, and can be found in Appendix F.

Associated Site Permits

The following permits will also have to be submitted and approved:

Associated Site Permits Agency Permit Identification No. Date

Applied Date Approved

TDEC ARAP

USACE 404 Nationwide County Land Disturbance

(Route 12)

APPENDIX A

BEGIN CONSTRUCTION

36.3591, -88.0311

END CONSTRUCTION

36.3544, -88.0821

PROPOSED REVETMENT LIMITS

350 LF

USGS QUAD MAP

PARIS LANDING, TN

POPLAR CREEK, TN

SCALE 1:30,000 Drawn By: HR Checked By: BA

AECOM

1000 Coporate Centre Drive, Suite 250 Franklin, TN 37067

Date: 12/15/22 BIG SANDY

HENRY AND BENTON COUNTIES, TN SWPPP VICINITY MAP

Figure 1

SITE LOCATION MAP³

FHWA-EFLHD

BIG SANDY UNIT

Legend

! OUTFALLS (TOTAL 82)

LOD (45 AC)

BEGIN CONSTRUCTION

36.3591, -88.0311

END CONSTRUCTION

36.3544, -88.0821

PROPOSED REVETMENT LIMITS

350 LF

USGS QUAD MAP

PARIS LANDING, TN

POPLAR CREEK, TN

SCALE 1:30,000 Drawn By: HR Checked By: BA

AECOM

1000 Coporate Centre Drive, Suite 250 Franklin, TN 37067

Date: 12/15/22 BIG SANDY

HENRY AND BENTON COUNTIES, TN SWPPP VICINITY MAP

Figure 2³ SITE LOCATION MAP

FHWA-EFLHD

BIG SANDY UNIT

Legend

! OUTFALLS (TOTAL 82)

LOD (45 AC)

APPENDIX B

Hydrologic Soil Group—Benton County, Tennessee, and Henry County, Tennessee

(BIG SANDY)

Natural Resources Conservation Service

Web Soil Survey National Cooperative Soil Survey

10/13/2021

401600 402300 403000 403700 404400 405100 405800 406500 407200 407900 408600

401600 402300 403000 403700 404400 405100 405800 406500 407200 407900 408600

36° 23' 34'' N

' 5 3'

' W 36° 23' 34'' N

' 5 '' W

36° 21' 3'' N

' 5 3'

' W

36° 21' 3'' N

' 5 '' W

N

Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 16N WGS84 0 1500 3000 6000 9000

Feet 0 450 900 1800 2700

Meters Map Scale: 1:32,900 if printed on A landscape (11" x 8.5") sheet.

MAP LEGEND MAP INFORMATION

Area of Interest (AOI) Area of Interest (AOI)

Soils Soil Rating Polygons

A

A/D

B

B/D

C

C/D

D

Not rated or not available

Soil Rating Lines A

A/D

B

B/D

C

C/D

D

Not rated or not available

Soil Rating Points A

A/D

B

B/D

C

C/D

D

Not rated or not available

Water Features Streams and Canals

Transportation Rails

Interstate Highways

US Routes

Major Roads

Local Roads

Background Aerial Photography

The soil surveys that comprise your AOI were mapped at 1:12,000.

Please rely on the bar scale on each map sheet for map measurements.

Source of Map: Natural Resources Conservation Service Web Soil Survey URL:

Coordinate System: Web Mercator (EPSG:3857)

Maps from the Web Soil Survey are based on the Web Mercator projection, which preserves direction and shape but distorts distance and area. A projection that preserves area, such as the Albers equal-area conic projection, should be used if more accurate calculations of distance or area are required.

This product is generated from the USDA-NRCS certified data as of the version date(s) listed below.

Soil Survey Area: Benton County, Tennessee Survey Area Data: Version 16, Sep 10, 2021

Soil Survey Area: Henry County, Tennessee Survey Area Data: Version 17, Sep 10, 2021

Your area of interest (AOI) includes more than one soil survey area. These survey areas may have been mapped at different scales, with a different land use in mind, at different times, or at different levels of detail. This may result in map unit symbols, soil properties, and interpretations that do not completely agree across soil survey area boundaries.

Soil map units are labeled (as space allows) for map scales 1:50,000 or larger.

Date(s) aerial images were photographed: Aug 21, 2019—Apr 10, 2020

The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident.

Hydrologic Soil Group—Benton County, Tennessee, and Henry County, Tennessee

(BIG SANDY)

Natural Resources Conservation Service

Web Soil Survey National Cooperative Soil Survey

10/13/2021

Hydrologic Soil Group

Map unit symbol Map unit name Rating Acres in AOI Percent of AOI

HtE Hawthorne gravelly silt loam, 12 to 25 percent slopes

B 0.5 0.9%

PoC2 Providence silt loam, 5 to 8 percent slopes, moderately eroded

D 0.6 1.1%

PoD2 Providence silt loam, 8 to 12 percent slopes, moderately eroded

D 0.6 1.1%

SnD2 Smithdale-Luverne complex, 8 to 12 percent slopes, eroded

B 1.3 2.3%

Subtotals for Soil Survey Area 3.1 5.5%

Totals for Area of Interest 57.0 100.0%

Map unit symbol Map unit name Rating Acres in AOI Percent of AOI

Cn Chenneby silt loam, 0 to 2 percent slopes, occasionally flooded

B/D 2.0 3.5%

CVA Chenneby, Enville, and Arkabutla soils, 0 to 2 percent slopes, frequently flooded

B/D 0.4 0.7%

DaC3 Deanburg clay loam, 5 to 8 percent slopes, severely eroded

B 0.4 0.7%

DeB3 Deanburg loam, 2 to 5 percent slopes, severely eroded

B 0.2 0.3%

HtE Hawthorne gravelly silt loam, 12 to 25 percent slopes

B 0.1 0.2%

HTF Hawthorne, Sengtown, and Sugargrove soils, 25 to 70 percent slopes

B 1.3 2.3%

HuB Humphreys gravelly silt loam, 2 to 5 percent slopes

A 3.7 6.4%

Ik Iuka loam, 0 to 2 percent slopes, occasionally flooded

C 0.5 0.8%

LaB2 Lax silt loam, 2 to 5 percent slopes, eroded

D 3.6 6.4%

Hydrologic Soil Group—Benton County, Tennessee, and Henry County, Tennessee BIG SANDY

Natural Resources Conservation Service

Web Soil Survey National Cooperative Soil Survey

LaC2 Lax silt loam, 5 to 12 percent slopes, eroded

D 10.2 17.9%

Lo Lobelville silt loam, 0 to 3 percent slopes, occasionally flooded

B/D 1.1 1.9%

PaB2 Paden silt loam, 2 to 5 percent slopes, eroded

C/D 1.5 2.7%

PaC2 Paden silt loam, 5 to 12 percent slopes, eroded

C/D 10.0 17.5%

PoB2 Providence silt loam, 2 to 5 percent slopes, moderately eroded, north

D 1.0 1.8%

PoC2 Providence silt loam, 5 to 8 percent slopes, moderately eroded

D 4.5 7.9%

Pu Pruitton silt loam, 0 to 3 percent slopes, occasionally flooded

A 0.8 1.4%

Re Riverby-Ennis complex, 0 to 3 percent slopes, occasionally flooded

A 1.5 2.6%

SaE2 Saffell-Brandon complex, 12 to 25 percent slopes, eroded

B 0.3 0.5%

SuC Sugargrove-Sengtown- Hawthorne complex, 5 to 12 percent slopes

B 0.3 0.6%

SuE Sugargrove-Sengtown- Hawthorne complex, 12 to 25 percent slopes

B 10.4 18.3%

TmC Tarklin-Minvale complex, 5 to 12 percent slopes

D 0.0 0.0%

W Water 0.1 0.2%

Subtotals for Soil Survey Area 53.9 94.5%

Totals for Area of Interest 57.0 100.0%

Hydrologic Soil Group—Benton County, Tennessee, and Henry County, Tennessee BIG SANDY

Natural Resources Conservation Service

Web Soil Survey National Cooperative Soil Survey

Description

Hydrologic soil groups are based on estimates of runoff potential. Soils are assigned to one of four groups according to the rate of water infiltration when the soils are not protected by vegetation, are thoroughly wet, and receive precipitation from long-duration storms.

The soils in the United States are assigned to four groups (A, B, C, and D) and three dual classes (A/D, B/D, and C/D). The groups are defined as follows:

Group A. Soils having a high infiltration rate (low runoff potential) when thoroughly wet. These consist mainly of deep, well drained to excessively drained sands or gravelly sands. These soils have a high rate of water transmission.

Group B. Soils having a moderate infiltration rate when thoroughly wet. These consist chiefly of moderately deep or deep, moderately well drained or well drained soils that have moderately fine texture to moderately coarse texture.

These soils have a moderate rate of water transmission.

Group C. Soils having a slow infiltration rate when thoroughly wet. These consist chiefly of soils having a layer that impedes the downward movement of water or soils of moderately fine texture or fine texture. These soils have a slow rate of water transmission.

Group D. Soils having a very slow infiltration rate (high runoff potential) when thoroughly wet. These consist chiefly of clays that have a high shrink-swell potential, soils that have a high water table, soils that have a claypan or clay layer at or near the surface, and soils that are shallow over nearly impervious material. These soils have a very slow rate of water transmission.

If a soil is assigned to a dual hydrologic group (A/D, B/D, or C/D), the first letter is for drained areas and the second is for undrained areas. Only the soils that in their natural condition are in group D are assigned to dual classes.

Rating Options

Aggregation Method: Dominant Condition

Component Percent Cutoff: None Specified

Tie-break Rule: Higher

Hydrologic Soil Group—Benton County, Tennessee, and Henry County, Tennessee BIG SANDY

Natural Resources Conservation Service

Web Soil Survey National Cooperative Soil Survey

K Factor, Whole Soil—Benton County, Tennessee, and Henry County, Tennessee

(BIG SANDY)

Natural Resources Conservation Service

Web Soil Survey National Cooperative Soil Survey

10/13/2021

401600 402300 403000 403700 404400 405100 405800 406500 407200 407900 408600

401600 402300 403000 403700 404400 405100 405800 406500 407200 407900 408600

36° 23' 34'' N

' 5 3'

' W 36° 23' 34'' N

' 5 '' W

36° 21' 3'' N

' 5 3'

' W

36° 21' 3'' N

' 5 '' W

N

Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 16N WGS84 0 1500 3000 6000 9000

Feet 0 450 900 1800 2700

Meters Map Scale: 1:32,900 if printed on A landscape (11" x 8.5") sheet.

MAP LEGEND MAP INFORMATION

Area of Interest (AOI) Area of Interest (AOI)

Soils Soil Rating Polygons

.02

.05

.10

.15

.17

.20

.24

.28

.32

.37

.43

.49

.55

.64

Not rated or not available

Soil Rating Lines .02

.05

.10

.15

.17

.20

.24

.28

.32

.37

.43

.49

.55

.64

Not rated or not available

Soil Rating Points .02

.05

.10

.15

.17

.20

.24

.28

.32

.37

.43

.49

.55

.64

Not rated or not available

Water Features

Streams and Canals

Transportation Rails

Interstate Highways

US Routes

Major Roads

Local Roads

Background Aerial Photography

The soil surveys that comprise your AOI were mapped at 1:12,000.

Please rely on the bar scale on each map sheet for map measurements.

Source of Map: Natural Resources Conservation Service Web Soil Survey URL:

Coordinate System: Web Mercator (EPSG:3857)

Maps from the Web Soil Survey are based on the Web Mercator projection, which preserves direction and shape but distorts distance and area. A projection that preserves area, such as the Albers equal-area conic projection, should be used if more accurate calculations of distance or area are required.

This product is generated from the USDA-NRCS certified data as of the version date(s) listed below.

Soil Survey Area: Benton County, Tennessee Survey Area Data: Version 16, Sep 10, 2021

Soil Survey Area: Henry County, Tennessee Survey Area Data: Version 17, Sep 10, 2021

Your area of interest (AOI) includes more than one soil survey area. These survey areas may have been mapped at different scales, with a different land use in mind, at different times, or at different levels of detail. This may result in map unit symbols, soil properties, and interpretations that do not completely agree across soil survey area boundaries.

Soil map units are labeled (as space allows) for map scales 1:50,000 or larger.

Date(s) aerial images were photographed: Aug 21, 2019—Apr 10, 2020

The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident.

K Factor, Whole Soil—Benton County, Tennessee, and Henry County, Tennessee

(BIG SANDY)

Natural Resources Conservation Service

Web Soil Survey National Cooperative Soil Survey

K Factor, Whole Soil

HtE Hawthorne gravelly silt loam, 12 to 25 percent slopes

.17 0.5 0.9%

PoC2 Providence silt loam, 5 to 8 percent slopes, moderately eroded

.49 0.6 1.1%

PoD2 Providence silt loam, 8 to 12 percent slopes, moderately eroded

.49 0.6 1.1%

SnD2 Smithdale-Luverne complex, 8 to 12 percent slopes, eroded

.43 1.3 2.3%

Subtotals for Soil Survey Area 3.1 5.5%

Totals for Area of Interest 57.0 100.0%

Map unit symbol Map unit name Rating Acres in AOI Percent of AOI

Cn Chenneby silt loam, 0 to 2 percent slopes, occasionally flooded

.43 2.0 3.5%

CVA Chenneby, Enville, and Arkabutla soils, 0 to 2 percent slopes, frequently flooded

.49 0.4 0.7%

DaC3 Deanburg clay loam, 5 to 8 percent slopes, severely eroded

.32 0.4 0.7%

DeB3 Deanburg loam, 2 to 5 percent slopes, severely eroded

.32 0.2 0.3%

HtE Hawthorne gravelly silt loam, 12 to 25 percent slopes

.17 0.1 0.2%

HTF Hawthorne, Sengtown, and Sugargrove soils, 25 to 70 percent slopes

.17 1.3 2.3%

HuB Humphreys gravelly silt loam, 2 to 5 percent slopes

.20 3.7 6.4%

Ik Iuka loam, 0 to 2 percent slopes, occasionally flooded

.43 0.5 0.8%

LaB2 Lax silt loam, 2 to 5 percent slopes, eroded

.49 3.6 6.4%

K Factor, Whole Soil—Benton County, Tennessee, and Henry County, Tennessee BIG SANDY

Natural Resources Conservation Service

Web Soil Survey National Cooperative Soil Survey

LaC2 Lax silt loam, 5 to 12 percent slopes, eroded

.49 10.2 17.9%

Lo Lobelville silt loam, 0 to 3 percent slopes, occasionally flooded

.37 1.1 1.9%

PaB2 Paden silt loam, 2 to 5 percent slopes, eroded

.49 1.5 2.7%

PaC2 Paden silt loam, 5 to 12 percent slopes, eroded

.49 10.0 17.5%

PoB2 Providence silt loam, 2 to 5 percent slopes, moderately eroded, north

.49 1.0 1.8%

PoC2 Providence silt loam, 5 to 8 percent slopes, moderately eroded

.49 4.5 7.9%

Pu Pruitton silt…