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United States Department of the Interior • National Park Service •Grand Teton National Park 

Summary –Page 1

Environmental Assessment/Assessment of Effect 

Gros Ventre Campground Rehabilitation 

Grand Teton National Park 

Moose, WY 

EXECUTIVE SUMMARY 

The National Park Service proposes to rehabilitate the Gros Ventre Campground with 

infrastructure and facility improvements that would benefit the visiting public, park employees, 

park operations and wildlife. The purpose of the project is to address health and safety concerns 

related to aging campground infrastructure, enhance the experience of park visitors, meet current 

and future visitor demands, reduce impervious surface and restore natural vegetation and wildlife 

habitat. The project is also needed to provide for additional seasonal National Park Service, 

concessioner, and partner RV administrative sites. 

This Environmental Assessment/Assessment of Effect evaluates two alternatives for rehabilitation 

of the Gros Ventre Campground. 

Alternative 1—No Action Alternative: Under this alternative, the Gros Ventre Campground 

would not be rehabilitated. There would be no new improvements and all existing infrastructure 

and facilities would remain in place including: the outdated water system; the existing water 

treatment building; the existing undersized dump station; and existing campground office/contact 

station and associated parking. The campground would remain non-compliant with the 

Architectural Barriers Act of 1968 and the lack of visitor amenities and administrative RV sites 

would continue. 

Alternative 2—Preferred Alternative: This alternative proposes to upgrade and/or replace 

critical campground infrastructure, including: a new water and waste water system; install up to 

50 visitor electric hook ups sites; expand of existing administrative campsites; upgrade comfort 

stations to meet current accessibility standards; construct new shower and laundry facilities for 

visitor and administrative use; and permanently close two existing campground loops. The 

campground entry area, including the office, parking area, and dump station, would be realigned 

and expanded to meet current visitor needs. This alternative also proposes to reduce the existing 

campground footprint by up to eight acres and revegetate and restore valuable wildlife habitat. 

The two alternatives were evaluated for impacts to archaeological and ethnographic resources, 

soils, vegetation, water resources (surface, groundwater, and floodplains), wildlife, park 

operations, and visitor use and experience. There would be no major, adverse impacts to these 

resources. 

This Environmental Assessment/Assessment of Effect will be on public review for 30 days. If you 

wish to comment, you may mail comments to the address below or post comments online at 

http://parkplanning.nps.gov/grte. 

Superintendent 

Grand Teton National Park 

P.O. Drawer 170 

Moose, WY 83012 

Before including your address, phone number, e-mail address, or other personal identifying 

information in your comment, you should be aware that your entire comment – including your 

personal identifying information – may be made publicly available at any time. While you can ask 

us in your comment to withhold your personal identifying information from public review, we 

cannot guarantee that we will be able to do so.
Gros Ventre Campground Rehabilitation Environmental Assessment 

Grand Teton National Park May 2009 i

TABLE OF CONTENTS 

Executive Summary ...................................................................................................................................... 1

CHAPTER I: PURPOSE AND NEED ................................................................ 1

1.1 Introduction ......................................................................................................................................... 1

1.2 Purpose & Need for Action ................................................................................................................ 2

1.3 Appropriate Use .................................................................................................................................. 6

1.4 Impairment and Conservation of Park Resources and values ........................................................ 7

1.5 Relationship of the Proposed Action to Previous Planning Efforts, Laws, and Policies ............... 7

1.6 Scoping and Relevant Issues .............................................................................................................. 9

1.7 Impact Topics .................................................................................................................................... 11

CHAPTER 2: ALTERNATIVES ....................................................................... 22

2.1 Development of Alternatives ............................................................................................................ 22

2.2 Elements Common to all Alternatives ............................................................................................. 22

2.3 Alternative 1 – No Action ................................................................................................................. 23

2.4 Alternative 2: Gros Ventre Campground Improvements & Restoration (Preferred Alternative)27

2.5 Alternatives Considered but Dismissed ........................................................................................... 31

2.6 Mitigation Measures for Alternative 2 ............................................................................................ 32

2.7 Comparison of the Alternatives ....................................................................................................... 36

2.8 Identification of the Environmentally Prefered Alternative ......................................................... 39

CHAPTER 3: AFFECTED ENVIRONMENT & ENVIRONMENTAL 

CONSEQUENCES............................................................................................ 41

3.1 Cultural Resources ............................................................................................................................ 44

3.2 Soils .................................................................................................................................................... 50

3.3 Vegetation .......................................................................................................................................... 53

3.4 Water Resources (Surface, Groundwater & Floodplains) ............................................................. 57

3.5 Wildlife, Including Threatened or Endangered Species ................................................................ 62
Gros Ventre Campground Rehabilitation Environmental Assessment 

Grand Teton National Park May 2009 ii

3.6 Park Operations and Partnerships .................................................................................................. 82

3.7 Visitor Use and Experience (Including Public Health and Safety) ............................................... 86

3.8 Unacceptable Impacts and Impairment Analysis ........................................................................... 90

CHAPTER 4: CONSULTATION AND COORDINATION ........................... 91

4.1 List of Preparers ................................................................................................................................ 91

4.1 Agencies/ Tribes/ Organizations/ Individuals Contacted .............................................................. 91

REFERENCES .................................................................................................. 92

LIST OF TABLES 

Table 1.7 Impact Topics Retained or Dismissed from Detailed Analysis .......................... 20 

Table 2.7a. Comparison of Alternatives by the Project Objectives ..................................... 37 

Table 2.7b. Comparison of Impacts by Alternatives ............................................................. 38 

Table 3.2. Description of Soil Survey Mapping Units within the Project Area. ................ 51 

Table 3.5. Species of Concern that may occur in the Project Area. .................................... 69 

Table 4.1 Preparers of this Gros Ventre Campground Rehabilitation 

Environmental Assessment ....................................................................................................... 91 

LIST OF FIGURES 

Figure 1.1 Project Vicinity Map ................................................................................................. 2 

Figure 2.3a. Alternative 1 – Current Gros Ventre Campground Configuration .............. 25 

Figure 2.3b. Alternative 1 – Location of Current Utilities throughout 

Gros Ventre Campground ......................................................................................................... 26 

Figure 2.4a. Alternative 2 – Proposed Gros Ventre Campground Configuration ............ 29 

Figure 2.4b. Alternative 2 – Proposed Utility Locations throughout Gros Ventre Campground

 ....................................................................................................................................................... 30 
Chapter 1 Grand Teton National Park

Gros Ventre Campground Rehabilitation Environmental Assessment 

Grand Teton National Park May 2009 

1

CHAPTER I: PURPOSE AND NEED 

1.1 INTRODUCTION 

Grand Teton National Park and the John D. Rockefeller Jr. Memorial Parkway are 

located in the northwest corner of Wyoming, just south of Yellowstone National Park. 

Grand Teton National Park encompasses approximately 310,000 acres (125,550 ha) and 

the Parkway comprises about 23,700 acres (9,591 ha) of land between the northern 

boundary of Grand Teton National Park and the southern boundary of Yellowstone 

National Park. For the purposes of this document, references to “Grand Teton National 

Park” or the “Park” hereafter refer to both Grand Teton National Park and the John D. 

Rockefeller Jr. Memorial Parkway. 

The 1963 Gros Ventre Campground Master Plan (Revised 1965) proposed the conversion 

of an old cow pasture along the Gros Ventre River to the present-day Gros Ventre 

Campground. The plan projected full development to accommodate 520 campsites. The 

750-seat amphitheater with its 80-car parking lot could be expanded to 160-car capacity. 

In 1964, during the first phase of construction, 220 campsites and six comfort stations 

were installed. In 1965, the second phase of construction added 165 campsites and eight 

more comfort stations. The Gros Ventre Campground is located in the park’s south 

district, bordering the north edge of the National Elk Refuge (Figure 1.1). The 170-acre 

campground is the largest of the six campgrounds in Grand Teton National Park1

. 

Within eight loops there are 365 visitor sites, 20 administrative sites, 14 comfort stations, 

a two-stall RV dump station, amphitheater, and a small administrative area. The 

campground infrastructure and subsequent impervious surface consists of over 4.5 miles 

(11 acres) of pavement in the road system, parking, and amphitheater. 

In 2003, Grand Teton National Park determined that the most efficient and costeffective method to manage its campgrounds would be through its concessioners. A 

financial feasibility and market analysis that was prepared to support the concessions 

contracting process showed that in the private sector, most campgrounds have at least 

some campsites with hookups in order to improve public service and utilization. 

Research conducted by the park showed that converting 25 percent of sites to electric 

hook up sites would be a reasonable balance between meeting visitor demand and 

maintaining the rustic nature of the campground. This study also identified several 

maintenance and improvement projects necessary to improve park campground 

standards. 

In 2007, the Grand Teton Lodge Company was awarded the new concessions contract, 

which required a capital investment to improve campgrounds. For Gros Ventre 

Campground, the contract included: replacement of utility systems; campsite 

improvements such as utility hookups, new picnic tables and fire rings to enhance visitor 

experience and increase occupancy; improved and accessible comfort stations; and an 

updated and improved dump station facility. 

Although Gros Ventre Campground is a concessioner managed campground, the 

operation and maintenance of utilities is the responsibility of the National Park Service 

 

1 Other park campgrounds are Jenny Lake (51 visitor sites, 1 employee site), Signal Mountain (80 visitor sites, 1 employee site),

Colter Bay (352 sites), Flagg Ranch (175), and Lizard Creek (61 visitor sites, 2 employee sites).
Chapter 1 Grand Teton National Park 

Gros Ventre Campground Rehabilitation Environmental Assessment 

Grand Teton National Park May 2009 2

and closure of the dump station, water system or other utilities/ infrastructure due to 

system malfunction, would result in the National Park Service not meeting its 

contractual obligations. The National Park Service retains responsibility for the 

operation and maintenance of the water and wastewater systems 

This Environmental Assessment/ Assessment of Effect (hereafter referred to as 

Environmental Assessment or EA) provides the framework for the National Park Service 

and concessioner to conduct rehabilitation work aimed at improving overall 

campground services and facilities. This document also discloses the potential effects to 

the human environment from the proposed rehabilitation of the Gros Ventre 

Campground. The human environment is defined as the natural and physical 

environment and the relationship of the people with that environment. 

1.2 PURPOSE & NEED FOR ACTION 

The purpose of rehabilitating the Gros Ventre Campground is to enhance the experience 

of park visitors; meet current and future visitor demands; address health and safety 

concerns related to aging campground infrastructure; reduce impervious surface and 

restore natural vegetation and wildlife habitat in the project area by reducing the overall 

campground footprint; address seasonal employee housing shortfalls, upgrade comfort 

stations to meet current accessibility standards; remove infrastructure from flood prone 

areas of the campground; expand existing administrative camping facilities, and provide 

visitor utility hook up sites. 

The primary reason the National Park Service is proposing to rehabilitate the Gros 

Ventre Campground is because the aging facilities and infrastructure have not been 

upgraded or changed since the campground first opened 45 years ago. The design and 

services do not meet the need of today’s visitors. Additionally, the failing infrastructure 

requires emergency repairs 3-5 times a year. If infrastructure should fail, public health 

and safety, as well as the quality of the Gros Ventre River and the Snake River aquifer 

could be threatened. 

The project is also needed to provide for additional seasonal National Park Service, 

concessioner, and partner RV administrative sites. The conversion of a number of 

underutilized visitor sites to administrative RV campsites also provides necessary 

housing for effective campground and park operations. 

Additional conditions that have led the National Park Service to propose rehabilitation 

actions within the project area are described as follows: 

Campground Footprint 

In the last 10 years, the campground has filled to capacity only once - in 2003. 

Additionally, there have been only 68 visitor nights filling more than 250 campsites in the 

last ten years The large footprint of the campground, with its relatively low occupancy 

rates, not only results in an unnecessarily large number of facilities and area to be 

managed, but also displaces wildlife from potentially prime habitat. 
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Figure 1.1 Project Vicinity Map 
Chapter 1 Grand Teton National Park 

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Water System 

Located on the north side of loop A, the 1964 water system consists of a well, a 1,500-

gallon hydropneumatic pressure tank and a chlorine dose system for treating water. 

Although the treated water from the well meets Environmental Protection Agency and 

Wyoming Department of Environmental Quality standards, the pressure tank is rusting 

and cracking, which has created excessive operational costs and disruption of services. 

The well and water supply system serves the entire campground. The 8-inch well is 150 

ft-deep and the depth to the water level is approximately 11 ft. A 1,200 ft2

 water 

treatment building was built around the well making repair or replacement of the well 

extremely difficult. The electric service and controls for the pump are outdated and in 

poor condition.2

 

The water distribution system consists of 2–4 inch galvanized cast iron pipes. Lines are 

often root bound, obstructing flow and frequently requiring emergency repair when 

lines are broken or completely obstructed. The uninsulated lines are buried 2–4 ft deep, 

limiting the use during shoulder seasons because of the threat of freezing. 

There is no back-up well or pump system in the campground; therefore, failure of the 

system or interruption of service would result in lack of sanitary services, threatening the 

health and safety of visitors and employees. 

Dump Station 

The dump station and contact station share a waste water system and leach field that was 

constructed in 1965. Park staff has been responding to regular system failures since 1995, 

preventing them from addressing other maintenance needs throughout the park. 

Although visitor use of the Gros Ventre Campground has declined in recent years, RV 

use and size has increased. This has put an added burden on the dump station leach field 

where it can no longer properly treat the waste. RV dump waste is more concentrated 

than typical wastewater and contains chemicals to control odors. Active ingredients in 

these chemicals often include formaldehyde or quaternary ammonium chloride (Comey 

1998). The entry of these harmful and concentrated chemicals into the groundwater 

without proper treatment poses a public health risk. The tank capacity of 3,000 gallons is 

undersized for current demand and therefore requires frequent pumping. On several 

occasions when pumping was not prompt enough, the sewage flowed onto the ground 

near the septic tank causing a public health hazard. 

The leach field is located on a bench approximately 1,300 ft from the Gros Ventre River 

and the predominant vegetation is sagebrush. The field, which consists of three leach 

lines, each 75 ft-long, is undersized for increased demand on the dump station. The 

concrete pipe drain fields have roots which are growing into weak areas and 

connections. System failure during peak visitation may create an adverse health and 

safety situation for visitors and employees, and could lead to potentially harmful 

environmental effects.3

 

2 An additional well exists 200 ft southwest of the existing leachfield. This well was drilled in 1975 and was used as a monitoring) 

well, along with four others drilled in 1996. (Comey 1998). 3

 RV dump waste is more concentrated than typical wastewater and contains chemicals to control odors. The chemicals may include 

formaldehyde or quaternary ammonium chloride. (Comey 1998) 
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Comfort Stations 

There are 14 comfort stations located within the campground and currently, none meet 

Architectural Barriers Act of 1968 4 accessibility standards. 

The comfort stations located in loops E, F, G and Group utilize a collection system and 

lift station to pump effluent to a larger septic tank and leach field on the bench at the 

west end of the campground. The four comfort stations and their associated 

infrastructure located in loops G and F are within flood prone areas. These areas have 

flooded several times during the spring melt, when water levels are at their highest. Such 

high water events require closure of these loops and special attention to prevent 

overloading the system or contaminating the Gros Ventre River. 

Visitor Campsites 

Currently, the Gros Ventre Campground has 365 visitor RV/ tent campsites. There are 

no visitor utility hookup sites or Architectural Barriers Act compliant campsites. 

Administrative Sites 

There are 43 administrative campsites in the park, 20 of which are located in Gros Ventre 

Campground. Administrative RV sites are used by park, partner, and concessioner 

employees and volunteers who are critical to park operations. In 2006, the Gros Ventre 

Campground Interdisciplinary Team identified the current need of over 70 

administrative RV campsites for seasonal employees and volunteers, and this number is 

expected to grow in the near future. This estimated need includes the 2007 displacement 

of 12 seasonal RV sites in the Beaver Creek area by cabins that were donated to the park 

for use as employee housing. . 

Amphitheater 

The 1960s vintage, 750-seat amphitheater has a half-acre parking lot able to 

accommodate 80 vehicles. The parking lot is used primarily for excess and oversized 

vehicle parking. The amphitheater facility is oversized and underutilized, as the numbers 

of visitors attending evening programs is relatively low compared to the size of the 

amphitheater. Of Grand Teton National Park amphitheaters, the Gros Ventre 

Campground amphitheater has the lowest attendance. On average, 50 visitors attend 

programs at the Gros Ventre Campground amphitheater during peak season. By 

comparison, on average, 150 visitors attend amphitheater programs at Colter Bay. 

OBJECTIVES 

• Upgrade and rehabilitate critical infrastructure and utilities, thereby providing 

for safe and sustainable operations of the water, electric, and wastewater systems 

(NPS Management Policies 2006, §9.1.5.1 Water Supply Systems; 

§9.1.5.1Wastewater Treatment Systems).

• Provide electric only RV hookup sites in the campground to meet visitor demand 

and provide a wider variety of experiences (NPS Management Policies 2006, 

§9.3.2.1 Campgrounds). 

 

4

 Architectural Barriers Act of 1968 (ABA) compliant. The ABA requires access to all 

facilities designed, built, altered, or leased with Federal funds. 
Chapter 1 Grand Teton National Park 

Gros Ventre Campground Rehabilitation Environmental Assessment 

Grand Teton National Park May 2009 6

• Increase the park’s ability to meet National Park Service and partner demands for 

employee housing by providing full hookup RV sites for administrative use (NPS 

Management Policies 2006, §7.6.1 Volunteers in Parks; §7.6.2Cooperating 

Associations; §9.4.3 Employee Housing). 

• Improve service to all visitors including those with disabilities by providing 

campsites and comfort stations that meet current accessibility standards (NPS 

Management Policies 2006, §9.1.2 Accessibility for Persons with Disabilities; §9.3.3 

Comfort Stations). 

• Remove comfort stations and utilities from flood prone areas (NPS Management 

Policies 2006, §4.4.2.4 Natural Landscapes; §9.3.3 Comfort Stations). 

• Decrease campground impervious surface and overall footprint to improve 

critical wildlife winter range and provide overall natural resource benefits (NPS 

Management Policies 2006, §4.4.2.4 Natural Landscapes). 

1.3 APPROPRIATE USE 

Sections 1.4 and 1.5 of NPS Management Policies 2006 directs the National Park Service 

to ensure that allowed park uses would not cause impairment of, or unacceptable 

impacts on, park resources and values. A new form of park use may be allowed within a 

park only after a determination has been made in the professional judgment of the park 

manager that it will not result in unacceptable impacts. 

Section 8.1.2 of Management Policies 2006, Process for Determining Appropriate Uses, 

provides evaluation factors for determining appropriate uses. All proposals for park uses 

are evaluated for: 

• consistency with applicable laws, executive orders, regulations, and policies; 

• consistency with existing plans for public use and resource management; 

• actual and potential effects on park resources and values; 

• total costs to the service; and 

• whether the public interest will be served. 

Park managers must continually monitor all park uses to prevent unanticipated and 

unacceptable impacts. If unanticipated and unacceptable impacts emerge, the park 

manager must engage in a thoughtful, deliberate process to further manage or constrain 

the use, or discontinue it. More information on the definition of unacceptable impacts as 

cited in §1.4.7.1 of NPS Management Policies 2006 can be found in the beginning of 

Chapter 3 of this document. 

Campgrounds are common and vital facilities in most park units. Proper location of 

infrastructure, materials and methods would ensure that unacceptable impacts to park 

resources and values would not occur. The proposed campground improvements are 

consistent with the Grand Teton National Park Master Plan (1976) and other related 

park plans. With this in mind, the National Park Service finds that the campground 

improvements are an acceptable use at Grand Teton National Park. 
Chapter 1 Grand Teton National Park 

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1.4 IMPAIRMENT AND CONSERVATION OF PARK 

RESOURCES AND VALUES 

National Park Service Management Policies 2006 require analysis of potential effects to 

determine whether or not actions would impair park resources. The fundamental 

purpose of the national park system, established by the Organic Act (16 USC 1, Sec. 1-4) 

and reaffirmed by the General Authorities Act (16 USC 1a-1 through 1a-8), as amended, 

begins with a mandate to conserve park resources and values. National Park Service 

managers must always seek to avoid, or to minimize to the greatest degree practicable, 

adversely impacting park resources and values. 

However, the laws to give the National Park Service the management discretion to allow 

impacts to park resources and values when necessary and appropriate to fulfill the 

purposes of a park, as long as the impact does not constitute impairment of the affected 

resources and values. Although Congress has given the National Park Service the 

management discretion to allow certain impacts within the park, that discretion is 

limited by the statutory requirement that the National Park Service must leave park 

resources and values unimpaired, unless a particular law directly and specifically 

provides otherwise. The prohibited impairment is an impact that, in the professional 

judgment of the responsible National Park Service manager, would harm the integrity of 

park resources or values. An impact to any park resource or value may, but does not 

necessarily, constitute impairment, but an impact would be more likely to constitute 

impairment when there is a major or severe adverse effect upon a resource or value 

whose conservation is: 

• necessary to fulfill specific purposes identified in the establishing legislation or 

proclamation of the park; 

• key to the natural or cultural integrity of the park; or 

• identified as a goal in the park’s general management plan or other relevant 

National Park Service planning documents. 

Impairment may result from National Park Service activities in managing the park, visitor 

activities, or activities undertaken by concessioners, contractors, and others operating in 

the park. A determination on impairment is made in Chapter 3 for natural and cultural 

resource impact topics. 

In addition to mandating the prevention of impairment, the Organic Act requires that the 

National Park Service prioritize conservation over use whenever the two are found to be 

in conflict. The National Park Service complies with this mandate by ensuring that a 

proposed use of the park will not result in unacceptable impacts to park resources and 

values. 

1.5 RELATIONSHIP OF THE PROPOSED ACTION TO 

PREVIOUS PLANNING EFFORTS, LAWS, AND POLICIES 

The following laws and executive orders guide National Park Service management of 

facilities, visitor services, and natural and cultural resources and have relevance to 

project: the National Environmental Policy Act of 1969; the Endangered Species Act of 
Chapter 1 Grand Teton National Park 

Gros Ventre Campground Rehabilitation Environmental Assessment 

Grand Teton National Park May 2009 8

1973; the National Historic Preservation Act of 1966; the Clean Water Act of 1972; the 

Clean Air Act of 1977; and the NPS Organic Act of 1916; Americans with Disability Act; 

Executive Order 11988: Floodplain Management; Executive Order 11990: Protection of 

Wetlands. 

Policies are guiding principles or procedures that help managers make day-to-day 

decisions. The primary source of guidance is the NPS Management Policies 2006. Policy 

topics that are relevant to the Gros Ventre Campground Rehabilitation Environmental 

Assessment include cultural resource management; interpretation and education; and 

park facilities including campgrounds and commercial visitor services. 

Another source of National Park Service policies are Director’s Orders, contained in the 

NPS Directives System. Director’s Orders are posted online at http://data2.itc.nps.gov 

/npspolicy/DOrders.cfm. Director’s Orders with relevance to this project are: DO–2: 

Park Planning; DO–6: Interpretation and Education; DO–12: Environmental Impact 

Analysis; and DO–77: Natural Resource Protection. 

Other planning and National Environmental Planning documents with relevance to the 

Gros Ventre Campground Rehabilitation Environmental Assessment are: 

Bison and Elk Management Plan Final Environmental Impact Statement 

(February 2007) and Record of Decision (April 2007) 

The US Fish and Wildlife Service and the National Park Service developed a plan for 

managing bison and elk in the National Elk Refuge and Grand Teton National Park. The 

plan addressed elk and bison threshold numbers, population control measures, forage 

management, winter feeding, disease management, restoration of habitat, and 

management of other species of wildlife. These management decisions are important, as 

the National Elk Refuge and Gros Ventre Campground share a common boundary, and 

the campground and nearby Gros Ventre River are migration corridors and excellent 

habitat for elk, bison, and other wildlife. 

Grand Teton National Park Transportation Plan Final Environmental 

Impact Statement (September 2006) and Record of Decision (March 2007) 

This plan includes a mix of separated multi-use pathways, improved roadway shoulders, 

re-alignment of the Moose-Wilson Road and calls for a feasibility study of potential 

transit options . The plan addresses a future phase of a widened shoulder on the Gros 

Ventre Road from the junction of 287/191/89, to the town of Kelly. 

Grand Teton National Park Fire Management Plan EA (October 2004) and 

Finding of No Significant Impact (December 2004) 

This plan allows fire management staff to use multiple tools available (i.e. prescribed fire, 

mechanical treatments, wildland fire use, and suppression) to manage fire throughout 

the park. 

Grand Teton National Park Master Plan (1976) 

The 1976 Master Plan addresses the park’s purposes, its resource values, its relationship 

to the regional environs, and the means by which its resources may best be managed. The 

Master Plan for Grand Teton National Park employs a land classification system that 

categorizes land within the national park in six ways: 
Chapter 1 Grand Teton National Park 

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• Class I: High-Density Recreation (Colter Bay and Jackson Lake Lodge). 

• Class II: General Outdoor Recreation (roads, campgrounds, low-density lodging, 

and residential and operation sites). 

• Class III: Natural Environment (valley lands committed to special uses as defined 

by legislation such as grazing, stock driveways, and life estates) . These lands 

serve as a buffer or transition zone, with low-density use and collectively, they 

provide the setting for park’s Class IV lands. 

• Class IV: Outstanding Natural (sections of the Teton Range and the Potholes). 

• Class V: Primitive (undeveloped lands with no roads that preserve the 

backcountry experience). 

• Class VI: Historical (remains of prehistoric settlement and historic utilization, 

which are significant parts of the park interpretive story. 

The Gros Ventre Campground is an example of a Class II land classification surrounded 

by Class III (Natural Environment) land. 

Foundation for Planning and Management, Grand Teton National Park and 

John D. Rockefeller , Jr. Memorial Parkway (2006) 

Gros Ventre Campground rehabilitation objectives are consistent with the mission 

statements for Grand Teton National Park and John D. Rockefeller, Jr., Memorial 

Parkway. Grand Teton National Park preserves and protects the spectacular and 

geologically unique landscape of the Teton Range, a diversified array of wildlife, and 

variety cultural resources symbolic of the American West. The park maintains the 

inherent integrity of the natural resources, processes and systems, and recognizes the 

dynamic geological processes that continue to influence the land and environment. The 

park also provides visitors an opportunity to understand, enjoy and be inspired by the 

wonders of the park in many different ways in a manner that does not diminish its 

fundamental resources and values. Grand Teton National Park provides a rare 

combination of outdoor and educational activities and outstanding opportunities to 

experience natural sounds, dark night skies, solitude, appreciation, and stewardship. 

The John D. Rockefeller, Jr., Memorial Parkway protects many of the same natural and 

cultural resources and provides similar visitor opportunities as the two neighboring 

parks (Grand Teton and Yellowstone National Parks) to which it seamlessly connects. 

The Parkway also commemorates the national importance of John D. Rockefeller, Jr.’s 

contributions to the cause of conservation. 

Jackson/Teton County Comprehensive Plan 

The comprehensive plan prepared by the Town of Jackson and Teton County indicates 

in the natural and scenic resources and conservation chapter that the Gros Ventre 

Campground borders a Conservation Focus Area. 

1.6 SCOPING AND RELEVANT ISSUES 

Scoping is an early and open process to determine the breadth of environmental issues 

and alternatives to be addressed in an environmental assessment. Grand Teton National 
Chapter 1 Grand Teton National Park 

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Grand Teton National Park May 2009 10

Park conducted both internal scoping with appropriate National Park Service staff and 

external scoping with interested and affected groups and agencies. 

Internal scoping was conducted by the staff at Grand Teton National Park. An 

interdisciplinary team was formed in May 2005, to define the purpose and need, identify 

a range of potential action alternatives to address the need, determine what the likely 

issues and impact topics would be, and to identify the relationship of the proposed 

action to other planning efforts in the park. 

Public Scoping for the Gros Ventre Campground Rehabilitation Environmental 

Assessment began June 15, 2005, with a press release, a public scoping brochure sent to 

the core mailing list, and a posting on Planning, Environment, and Public Comment 

website. On July 1, a scoping poster was posted in the five Grand Teton National Park 

campgrounds and the Kelly and Moose Post Offices. More than 200 scoping brochures 

were sent to the campgrounds and the Moose Visitor Center. The public comment 

period was from June 15-July 31, 2005, although posters provided the park email for 

comments outside of the official comment period. Forty-two comments were received 

from agencies, organizations, and individuals. 

The park initiated consultation with the US Fish and Wildlife Service, the Wyoming 

Game and Fish Department and the State Historic Preservation Office by sending a 

scoping statement to each agency. The US Fish and Wildlife Service provided a written 

response to the scoping statement in which the agency provided a list of threatened, 

endangered, and candidate species that have the potential to occur on or adjacent to the 

Gros Ventre Campground. The letter suggests protective measures and recommends 

that projected impacts to these species be considered in this Environmental Assessment, 

along with migratory birds and wetlands. The Wyoming Game and Fish Department also 

provided a written response to the scoping statement in which they expressed concern 

about impacts to elk, moose, bald eagles and trumpeter swans should the campground 

expands in size or seasonal window of operation be expanded, although neither of these 

actions is being proposed in this EA. Comments and recommendations from both 

agencies have been addressed and incorporated into the Chapter 3 wildlife sections of 

this document. It should be noted that while expansion of the campground and of the 

seasonal of operation were both considered during the development of alternatives, both 

options were ultimately dismissed from analysis (see section 2.5 Alternatives Considered 

but Dismissed). The State Historic Preservation Officer did not provide a written 

response to the scoping statement. Copies of agency correspondence letters are 

provided in Appendix A (Agency Correspondence). 

RELEVANT SCOPING ISSUES 

Public comments were organized into 5 separate issues: visitor campsites and amenities, 

administrative sites, utilities, the natural environment, and park operations. Each issue is 

summarized below. 

The majority of public comments (55) pertained to visitor sites, including RV hookup 

sites, general campsites, group sites, and visitor amenities. Although several commenters 

stated their preference to keep the campground as is by not adding any additional 

amenities, most recommend some improvements ranging from expanding to a full 

facility RV park to keeping the area more rustic with limited amenities. Larger 

improvements suggested, included the need for larger restrooms and dump station, a 
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central kitchen and laundry facilities, a small store, and a pavilion for groups. Smaller 

improvements recommended included such things as enlarging the campsites, repair or 

replace fire pits and picnic tables, and better signage. Additional substantive comments 

pertained to the relocation of flood prone campsites. 

The second issue addressed administrative sites, such as the types of utilities and 

whether the administrative sites should be separated from visitor sites. Thirteen 

comments were assigned to this category and they were unanimously in favor of locating 

administrative and volunteer sites separately from visitor sites. 

The third issue addressed utilities, roads, and facilities (i.e., restrooms, laundry and 

shower facilities, dump station, general store, picnic areas, and amphitheater). A total of 

52 comments were grouped into this category, with the majority of comments expressing 

favor for laundry, shower facilities, restroom improvements, including accessibility 

upgrades, and dump station and other infrastructure upgrades. One comment expressed 

favor for widening the main access road, and two comments were in favor of a general 

store while three were not. Two comments expressed favor for the development of a 

picnic area, one suggested refraining from addressing the amphitheater issue until after 

other rehabilitation actions are implemented, and another comment suggested turning 

the amphitheater parking area into a designated activity area. 

The fourth issue addressed public concern about vegetation, water, and wildlife resource 

management. Specific comments included the need for a vegetation survey of the project 

area, revegetation of the area, consideration of adverse effects to the Gros Ventre River 

and associated wetlands due to increased wastewater and sewage, an analysis of wildlife 

use of the project area, a floodplain analysis, and the effect of the project on the eligibility 

of a section of the Gros Ventre River as Wild and Scenic. 

The fifth and last issue addressed campground and park operations and management 

concerns. Some comments pertained to the need to compare seasonal and year round 

use options, consideration of alternative campground locations, and reducing the size of 

the existing campground. Other comments pertained to user-fee issues, the need to 

document seasonal housing demands and use/ occupancy trends, and safety concerns 

such as signage, speed, and quiet hours free of generator noise. 

1.7 IMPACT TOPICS 

In this section, the National Park Service provides an evaluation and explanation as to 

why impact topics either are or are not evaluated in further detail. A summary of impact 

topics retained or dismissed in provided in Table 1.7. Some impacts were dismissed from 

detailed study after discussions with park specialists and/ or input from federal and state 

agencies, and after internal and public scoping was completed. Impact topics were 

dismissed from further evaluation in this EA if: 

• impact topic resources do not exist in the project area; 

• impact topic resources would not be affected by the proposal, or the likelihood 

of impacts are not reasonably expected; or 

• there would be minor or less effects (i.e., no measurable effects) from the 

proposal, and there is little controversy on the subject or reasons to otherwise 
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include the topic. 

The National Park Service defines “measurable” impacts as moderate or greater effects. 

It equates “no measurable effects” as minor or less effects. “No measurable effect” is 

used by the National Park Service in determining if a categorical exclusion applies or if 

impact topics may be dismissed from further evaluation in an Environmental Assessment 

or Environmental Impact Statement. The use of “no measurable effects” in this 

Environmental Assessment pertains to whether the National Park Service dismisses an 

impact topic from further detailed evaluation in the Environmental Assessment. The 

reason the National Park Service uses “no measurable effects” to determine whether 

impact topics are dismissed from further evaluation is to concentrate on the issues that 

are truly significant to the action in question, rather than amassing needless detail as 

required by CEQ regulations at 1500.1(b). 

IMPACT TOPICS RETAINED FOR FURTHER ANALYSIS 

Archaeological Resources 

The National Park Service, as steward of many of America's most important cultural 

resources, is charged to preserve cultural resources for the enjoyment of present and 

future generations. Management decisions and activities throughout the National Park 

System must reflect awareness of the irreplaceable nature of these resources. The 

National Park Service will protect and manage cultural resources in its custody through 

effective research, planning, and stewardship and in accordance with the policies and 

principles contained in the NPS Management Policies 2006 and the appropriate Director’s 

Orders. 

The National Historic Preservation Act, as amended in 1992 (16 USC 470 et seq.), the 

National Environmental Policy Act of 1969 (42USC 4321 et seq.), the NPS DO–28: 

Cultural Resource Management Guideline, NPS Management Policies 2006, and DO–12, 

Conservation Planning, Environmental Impact Analysis, and Decision Making and 

Handbook require the consideration of impacts on archaeological resources listed in or 

eligible for listing in the National Register of Historic Places. In addition, the Native 

American Graves Protection and Repatriation Act of 1990 (25 USC 3001) requires specific 

actions when Native American human remains, funerary objects, sacred objects, and 

objects of cultural patrimony are excavated or discovered on federal lands. 

The National Park Service’s DO–28B: Archeology, affirms a long-term commitment to 

the appropriate investigation, documentation, preservation, interpretation, and 

protection of archeological resources inside units of the National Park Service. As one of 

the principal stewards of America's heritage, the National Park Service is charged with 

the preservation of the commemorative, educational, scientific, and traditional cultural 

values of archeological resources for the benefit and enjoyment of present and future 

generations. Archeological resources are nonrenewable and irreplaceable, so it is 

important that all management decisions and activities throughout the NPS reflect a 

commitment to the conservation of archeological resources as elements of our national 

heritage. 

A variety of archeological resources are found in Grand Teton National Park. 

Construction may result in impacts to archeological resources, as well as visitation in 

areas of known archeological sites; therefore, this topic was retained for further analysis. 
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Ethnographic resources 

National Park Service’s DO–28: Cultural Resource Management defines ethnographic 

resources as any site, structure, object, landscape, or natural resource feature assigned 

traditional legendary, religious, subsistence, or other significance in the cultural system 

of a group traditionally associated with it. According to DO–28 and Executive Order 

13007 on sacred sites, the National Park Service should try to preserve and protect 

ethnographic resources. 

While locations of specific ethnographic resources are not known within the project 

area, it is known that American Indian people utilized the Grand Teton area over 

thousands of years for hunting and gathering subsistence and occupation. Grand Teton 

National Park holds many resources important to these tribes including, but not limited 

to, wildlife, plants, and water. These resources do not always have a defined boundary 

and may occur within the project area. 

The American Indian tribes traditionally associated with the lands in Grand Teton 

National Park are being apprised by letter of the proposed action (Appendix A). 

Because many of these resources have not been identified, the National Park Service will 

continue to consult with the Blackfeet, Nez Perce, Crow, Northern Arapaho, Northern 

Cheyenne, Eastern Shoshone, and Shoshone-Bannock tribes. Due to continued 

consultation, this impact topic is included for analysis in this EA. 

Soils 

According to the NPS Management Policies 2006, the National Park Service will preserve 

and protect geologic resources and features from adverse effects of human activity, while 

allowing natural processes to continue. These policies also state that the National Park 

Service will strive to understand and preserve the soil resources of park units and to 

prevent, to the extent possible, the unnatural erosion, physical removal, or 

contamination of the soil, or its contamination of other resources. 

Soils may be impacted due to construction activities associated with new utilities, 

parking, grading, and site access. Although there would be mitigation measures designed 

for the project that would minimize soil loss during and after construction, the action 

alternative would result in new ground disturbance and have the potential to impact 

soils; therefore, this topic was retained for further analysis. 

Vegetation 

The National Park Service is directed by the Organic Act to conserve the scenery and the 

natural objects unimpaired for future generations. NPS Management Policies 2006 define 

the general principles for managing biological resources as maintaining all the 

components and processes of naturally evolving park ecosystems, including the natural 

abundance, diversity and ecological integrity of plant communities. When National Park 

Service management actions cause native vegetation to be removed, the National Park 

Service will seek to ensure that such removals will not cause unacceptable impacts to 

native resources, natural processes, or other park resources. 

Non-native species, also referred to as exotic or invasive, are not a natural component of 

the ecosystem. Management of populations of exotic plant and animal species, up to and 

including eradication, will be undertaken wherever such species threaten park resources 

or public health and when control is prudent and feasible. Executive Order 13122 states 
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that federal agencies are to prevent the introduction of invasive species, provide for their 

control, provide for restoration of native species and habitat conditions in ecosystems 

that have been invaded, and minimize the economic, ecological, and human health 

impacts that invasive species cause. 

The spread of non-native invasive species is a tremendous, on-going problem 

throughout the highly visited and occupied portions of the park. Many of these are 

designated by the state or county as noxious weeds that thrive in newly or highly 

disturbed areas. Several exotic species are present at the site. Four of these are on the 

State of Wyoming noxious weed list, and three of the four have proven very difficult to 

control or contain in Grand Teton National Park by biological, chemical or mechanical 

means. Ground disturbance and increases in light availability through overstory removal 

are factors that increase the probability of invasion of new terrain. 

Vegetation may be impacted due to construction activities associated with new utilities, 

parking, grading, and site access. Although there would be mitigation measures designed 

for the project that would minimize vegetation loss and spread of exotic species during 

and after construction, the action alternative will result in new ground disturbance and 

have the potential to impact vegetation; therefore, this topic was retained for further 

analysis. 

Water Resources 

Surface and Groundwater

The Clean Water Act (33 U.S.C §§ 1251-1387) strives to restore and maintain the 

chemical, physical and biological integrity of the nation’s waters. The act sets up a 

system of water quality standards, discharge limitations and permit requirements for any 

actions or proposed actions that may affect the quality of the nation’s waters. 

Executive Order 11988: Floodplain Management (42 Fed. Reg. 26951), DO–77-2 

Procedural Manual 77-2: Floodplain Management, and other guidance documents all 

maintain the National Park Service policy of preserving floodplain values and 

minimizing potentially hazardous conditions associated with flooding. In the procedural 

manual, proposed actions are classified as fitting into one of three classes. Depending 

upon the action class, one of the three “regulatory floodplains’ applies (100-yr, 500-yr, 

Extreme). If a proposed action is found to be in the applicable regulatory floodplain and 

relocating the action to a non-floodplain site is considered not to be a viable alternative, 

then flood conditions and associated hazards must be quantified as a basis for 

management decision making, and appropriate prescribed actions must be taken and a 

Statement of Findings prepared. 

Wastewater systems are planned as part of the action alternative. All wastewater would 

be adequately treated so that, on its return as groundwater, it meets or exceeds 

applicable state and federal water quality standards. Mitigation measures stipulated in 

the permit would mitigate any effects to groundwater resources such that changes in 

water quality or hydrology would not be detectable. 

Water resources may be impacted due to construction activities associated with new 

utilities, parking, grading, and site access. Although there would be mitigation measures 

designed for the project that will affect water quality during and after construction, the 

action alternative would result in new ground disturbance and have the potential to 

impact water quality; therefore, this topic was retained for further analysis. 
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Floodplains

The project area falls within the Gros Ventre River 100-year floodplain. Executive Order 

11988, Floodplain Management, and NPS DO–77-2, Floodplain Management Guidelines 

requires examination of potential impacts to floodplains and avoidance of adverse 

impacts associated with their direct and indirect development. Because this project area 

is located in the Gros Ventre River 100 year floodplain this topic will be addressing in 

this EA. A Statement of Findings is attached (Appendix C). 

Wildlife, Including Threatened and Endangered Species 

The National Environmental Policy Act of 1969 (42 USC 4321 et seq.) calls for an 

examination of the impacts on all components of affected ecosystems. National Park 

Service policy is to maintain all the components and processes of naturally evolving park 

unit ecosystems, including the natural abundance, diversity, and ecological integrity of 

plants and animals. The Gros Ventre Campground is used by a wide variety of wildlife 

The Endangered Species Act (1973) requires an examination of impacts on all federally 

listed, threatened or endangered species. National Park Service policy requires 

examination of the impacts on federal candidate species, as well as state-listed 

threatened, endangered, candidate, rare, declining, and sensitive species. Canada lynx 

and gray wolves are the only listed species within Grand Teton National Park. This 

project is not within or near a Lynx Analysis Unit and the habitat within the Gros Ventre 

Campground does not generally support the lynx and as a result, would not be affected 

by the project. 

Park Operations and Partnerships 

The campground utility and infrastructure systems are now in need of major 

rehabilitation work and require frequent emergency repair work to keep them operating 

and the campground open. Much of the utilities and other infrastructure systems within 

the campground are over 40 years old and have exceeded their serviceable life and are in 

need of replacement. The actions proposed in this EA have a potential to impact these 

aspects of park operations. 

The No Action Alternative may affect maintenance operations with increased 

maintenance and clean-up operations required by dump station malfunction, wastewater 

leaks, and spills. Emergency response by park crews to wastewater spills is hazardous 

work which impacts park operations. Under the Preferred Alternative, construction of a 

replacement lift station and trenching for utility lines may necessitate the temporary 

closing of bathroom and dump station facilities. 

The Gros Ventre Campground is managed by and provides housing for the Grand Teton 

Lodge Company, a park concessioner. Existing administrative sites within the 

campground also provide housing for volunteers, the Grand Teton Association, and 

other partners. There is a need within Grand Teton National Park for additional full –

hookup RV accommodations for employees. Partners are being consulted with regard to 

the impact the alternatives would have on their operations and the potential for partner 

funding of portions of the proposed action. Therefore, this impact topic is retained for 

analysis in this document. 

Visitor Use and Experience (Including Public Health and Safety) 

Providing for the safe enjoyment of national park resources is one of the foundations of 
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the National Park Service Organic Act. The rehabilitation of Gros Ventre Campground 

will address safety concerns imposed by failing infrastructure. Additionally, 

rehabilitation may change the visitor use and experience of the site due to reductions in 

available campsites, additional activity, interpretation, and amenities. Therefore, visitor 

use and experience, including public health and safety, is retained for analysis in this 

document 

IMPACT TOPICS DISMISSED FROM DETAILED ANALYSIS 

Historic Structures and Cultural Landscapes 

The National Historic Preservation Act, as amended in 1992 (16 USC 470 et seq.); the 

National Environmental Policy Act of 1969 (42 USC 4321 et seq.); and the NPS DO–28: 

Cultural Resource Management Guidelines, NPS Management Policies 2006, and DO–12: 

Conservation Planning, Environmental Impact Analysis, and Decision Making and 

Handbook require the consideration of impacts on historic structures and cultural 

landscapes listed in or eligible for listing in the National Register of Historic Places. This 

topic was dismissed from further analysis because there are no historic structures within 

the project area and the campground has not been designated a Cultural Landscape. 

Museum collections 

The National Historic Preservation Act, as amended in 1992 (16 USC 470 et seq.), the 

National Environmental Policy Act of 1969 (42 USC 4321 et seq.), NPS Management 

Policies 2006, DO–28: Cultural Resource Management Guidelines require the 

consideration of impacts on museum collections (archaeology, ethnology, history, 

biology, paleontology, geology, and archives). No museum collection items are currently 

stored or exhibited in the Gros Ventre Campground; therefore this topic was dismissed 

from further analysis. 

Air quality 

The Clean Air Act of 1963 (42 U.S.C. 7401 et seq.) was established to promote the public 

health and welfare by protecting and enhancing the nation’s air quality. The act 

establishes specific programs that provide special protection for air resources and air 

quality related values associated with National Park Service units. Section 118 of the 

Clean Air Act requires a park unit to meet all federal, state, and local air pollution 

standards. Grand Teton National Park is designated as a Class I air quality area under the 

Clean Air Act. A Class I designation indicates the maximum allowable increase in 

concentrations of pollutants over baseline concentrations of sulfur dioxide and 

particulate matter as specified in §163 of the Clean Air Act. Further, the Clean Air Act 

provides that the federal land manager has an affirmative responsibility to protect air 

quality related values (including visibility, plants, animals, soils, water quality, cultural 

resources, and visitor health) from adverse pollution impacts. 

Construction activities such as hauling materials and operating heavy equipment could 

result in temporary increases of vehicle exhaust, emissions, and fugitive dust in the 

general project area. Any exhaust, emissions, and fugitive dust generated from 

construction activities would be temporary and localized and would likely dissipate 

rapidly because air stagnation at Grand Teton National Park is rare. Overall, the project 

could result in a negligible degradation of local air quality, and such effects would be 

temporary, lasting only as long as construction. The Class I air quality designation for 
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Grand Teton National Park would not be affected by the proposal. Because there would 

not be any long-term effects on air quality and overall impacts would not exceed 

negligible/ minor, this topic was dismissed from further analysis in the EA. 

Lightscape Management 

In accordance with NPS Management Policies 2006, the National Park Service strives to 

preserve natural ambient lightscapes, which are natural resources and values that exist in 

the absence of human caused light. Grand Teton National Park strives to limit the use of 

artificial outdoor lighting to that which is necessary for basic safety requirements. The 

park also strives to ensure that all outdoor lighting is shielded to the maximum extent 

possible, to keep light on the intended subject and out of the night sky. 

The rehabilitation of Gros Ventre Campground would not measurably increase artificial 

light sources into the environment beyond historic levels, thus preserving the ability to 

see the stars, planets, and earth’s moon and other natural features that are visible during 

clear nights around the area as well as support park interpretive programs that focus on 

Night Skies and Astronomy. Any new buildings or campground lighting would be 

mitigated by employing lighting techniques such as using reflective shields on outdoor 

lights that minimize the amount of light directed up at the sky, the use of low-emitting 

light fixtures and motion-activated sensors, and lowest wattage light fixtures possible. 

These measures would help preserve the natural lightscape and save energy. Because 

these effects are minor or less in degree and would not result in any unacceptable 

impacts, this topic was dismissed from further analysis in the EA. 

Soundscape Management 

In accordance with NPS Management Policies 2006 and DO–47: Sound Preservation and 

Noise Management, an important component of the National Park Service’s mission is 

the preservation of natural soundscapes associated with national park units. Natural 

soundscapes exist in the absence of human-caused sound. The natural ambient 

soundscape is the aggregate of all the natural sounds that occur in park units, together 

with the physical capacity for transmitting natural sounds. Natural sounds occur within 

and beyond the range of sounds that humans can perceive and can be transmitted 

through air, water, or solid materials. The frequencies, magnitudes, and durations of 

human-caused sound considered acceptable varies among National Park Service units as 

well as potentially throughout each park unit, being generally greater in developed areas 

and less in undeveloped areas. 

All construction activity would occur in what can be considered the developed zone of 

Grand Teton National Park. Existing sounds in this area are most often generated from 

vehicular traffic (visitors and employees entering/leaving the campground), people, and 

climate controls on the buildings and RVs. 

During construction, human-caused sounds would likely increase due to construction 

activities, equipment, vehicular traffic, and construction crews. Any sounds generated 

from construction would be temporary, lasting only as long as the construction activity is 

generating the sounds, and would have a negligible to minor adverse impact on visitors 

and employees. 

Sound generated by the long-term operation after rehabilitation is complete, would most 

likely be beneficial, as fewer campers would use generators and the appropriate design of 

the campground would separate user types. Because these effects are minor or less in 
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degree and would not result in any unacceptable impacts, this topic was dismissed from 

further analysis in the EA. 

Prime and Unique Agricultural Lands 

The Farmland Protection Policy Act of 1981, as amended, requires federal agencies to 

consider adverse effects to prime and unique farmlands that would result in the 

conversion of these lands to non-agricultural uses. Prime or unique farmland is classified 

by the US Department of Agriculture's Natural Resources Conservation Service, and is 

defined as soil that particularly produces general crops such as common foods, forage, 

fiber, and oil seed; unique farmland produces specialty crops such as fruits, vegetables, 

and nuts. According to the Natural Resources Conservation Service, the project area 

does not contain prime or unique farmlands. Because there would be no effects on prime 

and unique farmlands, this topic was dismissed from further analysis in this document. 

Wetlands 

Executive Order 11990 Protection of Wetlands requires federal agencies to avoid, where 

possible, adversely impacting wetlands. Further, §404 of the Clean Water Act authorizes 

the US Army Corps of Engineers to prohibit or regulate, through a permitting process, 

discharge or dredged or fill material or excavation within waters of the United States. 

National Park Service policies for wetlands as stated in NPS Management Policies 2006

and DO–77-1: Wetlands Protection, strive to prevent the loss or degradation of wetlands 

and to preserve and enhance the natural and beneficial values of wetlands. In accordance 

with DO–77-1, proposed actions that have the potential to adversely impact wetlands 

must be addressed in a statement of findings for wetlands. 

National Wetland Inventory program shows no wetlands exist in the project area. A 

vegetation survey of the project area was also conducted in 2005. While the survey 

identified the presence of three facultative native wetland species, other wetland 

indicators were not present, confirming that there are no wetlands present within the 

project area. As such, wetlands were dismissed as an impact topic. 

Wild and Scenic Rivers 

Approximately 12.2 miles of the Gros Ventre River have been determined eligible for 

designation under the Wild and Scenic Rivers Act. Reaches of the Gros Ventre River 

below the Highlands Loop in Kelly do not have any Wild and Scenic River designation. 

The project area is therefore not within or adjacent to the corridor in question and none 

of the proposed actions would change the character of the river corridor in a manner 

that would affect its eligibility for future designation. Consequently, this topic was 

dismissed from further analysis. 

Wilderness 

According to NPS Management Policies 2006, proposals having the potential to impact 

wilderness values must be evaluated in accordance with the Wilderness Act of 1964 (16 

U.S.C. 1131) and the National Park Service procedures for implementing the National 

Environmental Policy Act. 

Gros Ventre Campground is not located within recommended or potential wilderness 

areas; therefore, this topic was dismissed from further analysis. 
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Environmental Justice 

Executive Order 12898: General Actions to Address Environmental Justice in Minority 

Populations and Low-Income Populations requires all federal agencies to incorporate 

environmental justice into their missions by identifying and addressing 

disproportionately high and adverse human health or environmental effects of their 

programs and policies on minorities and low-income populations and communities. 

Because the campground would continue to be available for use by all park staff and 

visitors regardless of race or income, and the construction workforces would not be 

hired based on their race or income, the proposed action would not have 

disproportionate health or environmental effects on minorities or low-income 

populations or communities. Thus, this topic was dismissed from further analysis in this 

document. 

Indian Trust Resources 

Secretarial Order 3175 requires that any anticipated impacts to Indian trust resources 

from a proposed project or action by Department of Interior agencies be explicitly 

addressed in environmental documents. The federal Indian trust responsibility is a 

legally enforceable fiduciary obligation on the part of the United States to protect tribal 

lands, assets, resources, and treaty rights, and it represents a duty to carry out the 

mandates of federal law with respect to American Indian and Alaska Native tribes. 

There are no Indian trust resources at Grand Teton National Park. The lands comprising 

the park are not held in trust by the Secretary of the Interior for the benefit of Indians 

due to their status as Indians; therefore, this topic was dismissed from further analysis in 

this document. 

Socioeconomic Environment 

The proposed action would neither change local and regional land use nor appreciably 

impact local businesses or other agencies. Implementation of the proposed action could 

provide a negligible beneficial impact to the economies of Teton County, Wyoming and 

Idaho, due to minimal increases in employment opportunities for the construction 

workforce and revenues for local businesses and governments generated from these 

additional construction activities and workers. Any increase in workforce and revenue, 

however, would be temporary and negligible, lasting only as long as construction. 

Because impacts to the socioeconomic environment would be negligible, this topic was 

dismissed. 

Additional National Environmental Policy Act Analysis 

The alternatives include all reasonably foreseeable connected actions. Environmental 

effects estimated for this project consider the site-specific effects of all foreseeable 

actions and mitigation measures. Monitoring during and following implementation of 

the project would occur to verify effectiveness of mitigation measures and predictions of 

impact. This Environmental Assessment will guide any subsequent project 

implementation. If new information or unforeseen and unanalyzed actions become 

necessary in the future, additional site-specific environmental analysis will be conducted 

before implementation. 

 
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Table 1.7 Impact Topics Retained or Dismissed from Detailed Analysis

Impact 

Topic 

Retain or 

Dismiss 

Relevant Regulations 

or Policies

Cultural Resources 

Archaeological 

Resources 

Retain National Park Service Organic Act; National Historic Preservation Act of 1966, as 

amended; Executive Order 11593:Protection and Enhancement of the Cultural 

Environment (1971), Archeological and Historic Preservation Act of 1974, as amended; 

Archeological Resources Protection Act of 1979, as amended; the Secretary of the Interior’s 

Standards and Guidelines for Archeology and Historic Preservation; Programmatic 

Memorandum of Agreement (MOA) Among the NPS, Advisory Council on Historic 

Preservation, and the National Council of State Historic Preservation Officers (1995); 

Protection of Archeological Resources, 43 CFR 7; Protection of Historic Properties, 36 CFR 

800; NPS Management Policies (2001); Cultural Resources Management Guidelines, DO–28 

(1998) 

Historic Structures 

and Cultural 

Landscapes 

Dismiss National Park Service Organic Act; National Historic Preservation Act of 1966, as 

amended; Executive Order 11593: Protection and Enhancement of the Cultural 

Environment (1971); Archeological and Historic Preservation Act of 1974, as amended; the 

Secretary of the Interior’s Standards for the Treatment of Historic Properties; 

Programmatic MOA among the NPS, Advisory Council on Historic Preservation, and the 

National Council of State Historic Preservation Officers (1995); NPS Management Policies 

(2001); Protection of Historic Properties, 36 CFR 800; the Secretary of the Interior’s 

Standards for the Treatment of Historic Properties with Guidelines for the Treatment of 

Cultural Landscapes (1996); Cultural Resources Management Guidelines, DO–28 (1998) 

Ethnographic 

Resources 

Retain The Secretary of the Interior’s Standards and Guidelines for Archeology and Historic 

Preservation; NPS Management Policies (2001); Protection of Historic Properties, 36 CFR 

800; Cultural Resources Management Guidelines, DO–28 (1998) 

Museum Collections Dismiss National Historic Preservation Act of 1966, as amended; National Environmental Policy 

Act of 1969, as amended; Museum Properties Management Act of 1955; NPS Management 

Policies (2001); Protection of Historic Properties, 36 CFR 800; Cultural Resources 

Management Guidelines, DO–28 (1998) 

Natural Resources

Air quality Dismiss NPS Organic Act; Federal Clean Air Act (CAA); CAA Amendments of 1990 (CAAA); NPS 

Management Policies 2001 

Lightscape 

Management 

Dismiss NPS Management Policies 2001 

Soundscape 

Management 

Dismiss NPS Organic Act; NPS Management Policies 2001, § 4.9 Soundscape Management, 

Director’s Order #47: Soundscape Preservation and Noise Management 

Prime and unique 

agricultural lands 

Dismiss Council on Environmental Quality 1980 memorandum on prime and unique farmlands 

Soils Retain NPS Management Policies 2001; NPS Natural Resource Management Guidelines for Soil 

Resources Management 

 
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Impact 

Topic 

Retain or 

Dismiss 

Relevant Regulations 

or Policies

 Vegetation Retain NPS Organic Act; NPS Management Policies 2001; DO–77, Natural Resource 

Protection; Executive Order 13112, Invasive Species 

Water Resources 

(Surface, 

Groundwater & 

Floodplains) 

Dismiss Clean Water Act; Executive Order 12088; NPS Management Policies 2001 

Executive Order 11988; Executive Order 11990; Clean Water Act; NPS 

Management Policies 2001 

Wetlands Dismiss Executive Order 11988; Executive Order 11990; Clean Water Act; NPS 

Management Policies 2001 

Wild & Scenic 

Rivers 

Dismiss Wild and Scenic Rivers Act 

Wilderness Dismiss Director’s Order 41; NPS Management Policies 2001; Wilderness Act of 1964 

Wildlife, including 

Threatened, 

Endangered and 

Special Concern 

Species 

Retain Endangered Species Act; NPS Management Policies 2001; National 

Environmental Policy Act; Executive Order 13112, Invasive Species 

(For GTNP – Bald Eagle, Canada Lynx, Grizzly Bear, Gray Wolf)

Social Resources 

Environmental 

justice 

Dismiss Executive Order 12898 

Indian trust 

resources 

Dismiss Department of the Interior Secretarial Order No. 3206, Interior Departmental 

Manual Part 512, Chapter 2 

Park operations 

and Partnerships 

Retain NPS Management Policies 2001 

Socioeconomic 

environment 

Dismiss 40 CFR 1500 Regulations for Implementing NATIONAL ENVIRONMENTAL 

POLICY ACT 

Visitor use and 

experience 

(including public 

health and safety) 

Retain NPS Organic Act; NPS Management Policies 2001 
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2009 22

CHAPTER 2: ALTERNATIVES 

2.1 DEVELOPMENT OF ALTERNATIVES 

In April of 2005, Grand Teton National Park began the scoping process with a meeting of park 

interdisciplinary specialists, representing interpretation, planning, visitor and resource 

protection, natural resource management, cultural resource management, professional services 

(engineering and landscape architecture), buildings and utilities, and park management. The 

National Environmental Policy Act mandated planning process continued until summer 2006. 

During internal scoping, several alternatives were developed which projected large-scale 

disturbance and high associated costs, both of which were undesirable. In the fall of 2007, the 

interdisciplinary specialists reconvened to look at the project once again. At this time, it was 

decided to scale the project back to reduce impacts and to be consistent with available funding. 

This chapter describes the No Action alternative (Alternative 1), the National Park Service 

Preferred Alternative (Alternative 2) and any alternatives considered but dismissed from 

analysis. Alternative 2 was developed in response to issues identified during the internal and 

external scoping process described in Chapter 1. Alternative 2 meets the Purpose and Need 

(section 1.1) and is the park’s preferred alternative as well as the environmentally preferred 

alternative. This chapter also provides a description of mitigation measures for the action 

alternative (2.6), a comparison of the alternatives in relation to project objectives (Table 2.7a.), 

and a comparison of impacts by alternatives (Table 2.7b.) 

Alternative 2: Gros Ventre Campground Improvements & Restoration, the preferred alternative 

is based on preliminary designs and best information available at the time of this writing. 

Specific distances, areas, and layouts used to describe the alternative are only estimates and 

could change during final site design. If changes during final site design are not consistent with 

the intent and effects of the selected alternative, then additional compliance will be needed as 

appropriate. 

2.2 ELEMENTS COMMON TO ALL ALTERNATIVES 

As a part of routine operations, the concessioner and the National Park Service would continue 

to repair and maintain existing utilities and other infrastructure not specifically identified in this 

EA. Any proposed changes which are not consistent with scope of actions and impacts covered 

under this document would require an additional and separate environmental and cultural 

compliance process. 

• Wastewater facilities for comfort stations in loops A-D would remain unchanged, 

continuing to use separate septic tanks and leach fields for treatment. 

• The existing water distribution system would remain. 

• Existing administrative sites outside of loop E (10 total) would remain unchanged. 

• Entry station building and parking would remain unchanged. 

• As electric power lines are replaced or added, placement underground would be the 

preferred option. 
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• The park’s concessioner would be responsible for replacing campfire rings, picnic tables, 

signage, benches and other furnishings as necessary. 

• Campground would remain a seasonal campground, operating from April through 

October and closing for the winter season. 

• Park amphitheater will remain (amphitheater and associated parking lot size will be 

determined later). 

2.3 ALTERNATIVE 1 – NO ACTION 

While this alternative does not meet the purpose and need for the project, the No Action 

Alternative provides a basis for comparing the management direction and environmental 

consequences of the proposed action and must always be considered in every Environmental 

Assessment. Should the No Action Alternative be selected, the National Park Service would 

respond to future needs associated with the Gros Ventre Campground without major actions or 

changes in course as proposed in this EA. It describes the action of continuing the present 

management operation and condition; it does not imply or direct discontinuing the present 

action or removing existing facilities. 

Under the No Action Alternative, the 385 site campground covering 170 acres, including over 

4.5 miles of roads, office and amphitheater parking areas (11 acres) and a 750-seat amphitheater, 

would remain unchanged. 

Under the No Action Alternative the campground would continue to be managed with roughly 

the same configuration of site types that currently exists with 20 administrative use sites and 365 

visitor use sites (Figure 2.3a.): 

• loop A (46 sites): RV& tent campsites with no hookups. 

• loop B (33 sites): RV& tent campsites with no hookups. Full hookups one administrative 

site. 

• loop C (43 sties): RV & tent visitor campsites, with no hookups provided and no 

generators allowed. 

• loop D (40 sites): RV & tent visitor campsites, with no hookups provided. 

• loop E (44 visitor and 10 administrative sites): RV & tent visitor campsites, with no 

hookups provided and no generators allowed. 

• loop F (50 sites): RV & tent visitor campsites, with no hookups provided and no 

generators allowed. 

• loop G (36 sites): tent only, visitor campsites, with no hookups provided and no 

generators allowed. 

• Group loop (five sites): five group sites for visitor and administrative use, having a 

combined capacity of 205 people. 

• West Corridor Road (25 sites): RV & tent visitor campsites, with no hookups provided 

and no generators allowed. 

• Behind the campground entry station (8 administrative sites): RV sites with full hookups. 
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• East Corridor (43 visitor sites, one administrative site): RV& tent campsites with no 

hookups. Full hookups one administrative site. 

The four comfort stations located in loops F and G would continue to be located in the flood 

prone area, often precluding the availability of these sites in the early season. The campground 

was built prior to the enactment of the Architectural Barriers Act of 1968 and is therefore not 

legally required to provide accessible facilities. The campground would therefore continue to 

lack accessible campsites and comfort stations to meet the needs of visitors with disabilities. 

The Gros Ventre Campground would not provide any utility hookups for visitors. A large 

percentage of the 365 RV and tent campsites available for visitors would remain underutilized. 

Administrative use for employee housing would be limited to the existing 20 full hookup RV 

sites. 

Under the No Action Alternative all utilities would remain in place and in the current condition 

(Figure 2.3b.). The 45 year old water system consisting of the well, hydropneumatic pressure 

tank, and outdated chlorine dose system for treating water would remain in place. The existing 

water treatment building constructed around the well would remain in place. The existing 

undersized dump station, campground office/contact station and associated parking would 

remain in place and continue to share a waste water system and leach field. All power lines 

would remain above ground. 
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Gros Ventre Campground Rehabilitation Grand Teton National Park May 2009 25

Figure 2.3a. Alternative 1 – Current Gros Ventre Campground Configuration 
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Figure 2.3b. Alternative 1 – Location of Current Utilities throughout Gros Ventre Campground 
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2009 

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2.4 ALTERNATIVE 2: GROS VENTRE CAMPGROUND 

IMPROVEMENTS & RESTORATION (PREFERRED 

ALTERNATIVE) 

Alternative 2 would involve infrastructure and facility improvements throughout the 

campground (Figure 2.4a.). Alternative 2 proposes a total of 308 sites: 54 for 

administrative use and 254 for visitor use, which would reduce the total number of sites 

within the campground by 77. The total number of visitor use campsites would be 

reduced by 111: 44 would be converted to administrative sites and 67 would be 

permanently closed. Campground layout and management would be based primarily on 

a segregation of administrative and visitor use areas. Up to 50 visitor campsites would be 

converted to electric hookup sites. Up to 34 additional campsites in loop E would be 

converted to full hookup, administrative use sites (water, sewer, electric), which would 

result in a total of up to 44 administrative sites. This reconfiguration would expand the 

footprint of each site; therefore, lowering the overall number of sites. The entirety of 

sites within loop E would be for administrative use only by National Park Service and 

concessioners or other partner employees. The administrative sites outside of loop E 

would remain as currently constructed. 

The four comfort stations located in loops F and G would be demolished and new 

accessible comfort stations would be constructed out of the flood prone zone to serve 

loop F and the new group sites. All above ground facilities and roadways serving the 

Group loop (5 sites), loop G (36 sites), and 10 sites on the West Corridor Road west of 

loop F would be closed permanently, man-made features would be removed, and the 

area revegetated. Additionally, accessible shower facilities for visitor use would be 

constructed in loop F and shower and laundry facilities would be constructed for 

administrative use in loop E. The group camp would be relocated further east on the 

West Corridor Road adjacent to loop F, replacing individual sites on the collector road 

with new group sites. The group sites would be designed to serve diverse group types 

and sizes and would feature adequate tent pads, gathering, cooking, eating, parking and 

camping facilities and would provide a new shower station to better serve visitors. In 

addition to improved and modern group sites, the parking area for the group sites would 

better accommodate the size of groups using the campsites. The current amphitheater 

size would remain the same; the amphitheater parking lot would be reduced by 25-50 

percent and the parking lot area would be revegetated. Under this alternative, the overall 

campground footprint would be reduced and related revegetation and enhancement 

efforts would result in eight additional acres of available habitat. 

Under Alternative 2, a large portion of the 45 year old infrastructure would be repaired 

or replaced (Figure 2.4b.). The water treatment facility would be replaced and include 

the installation of a new source well, water treatment building, pressure tank, pump, 

chlorination equipment/controls, and waterline to reconnect to the existing distribution 

system. 

An improved wastewater system would be constructed to serve loops E and F, the 

relocated group sites, campground office, the administrative sites behind the office, and 

the dump station would be expanded. New sewer line, septic tanks, manholes, and lift 

stations would be constructed along with a new leach field. The dump station area would 

be upgraded and enlarged to accommodate multiple full length RVs at the same time. 
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Access may be realigned to facilitate traffic flow. Additionally, new state required 

monitoring wells would be constructed to monitor the new leach field. 

The existing wastewater systems serving loops A-D would remain. Existing wastewater 

lines, lift station, and leach field servicing loops E, F and Group would be abandoned and 

left in place. As electric lines directly serving the campground are replaced or added, 

when possible, new lines would be placed underground. 
Chapter 2 

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29

Figure 2.4a. Alternative 2 – Proposed Gros Ventre Campground Configuration 
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Figure 2.4b. Alternative 2 – Proposed Utility Locations throughout Gros Ventre Campground 
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2.5 ALTERNATIVES CONSIDERED BUT DISMISSED 

The following alternatives were considered for project implementation, but were 

ultimately dismissed from further analysis. Reasons for their dismissal are provided in 

the following alternative descriptions. 

Full Build-out of Gros Ventre Campground: This alternative would have provided 70 

administrative use full-hookup sites and a group administrative site within two full loops. 

It would have also included systematic replacement of all water, wastewater, and electric 

lines and systems; separate shower/ laundry facilities for both visitors and employees; 

removal of comfort stations and RV sites from flood prone areas and replacement of all 

comfort stations with larger, Architectural Barriers Act compliant stations; development 

of upgraded camping spurs at every campsite; installation of both full and electric only 

hookups for visitors; construction of a new campground registration building; and 

construction of pedestrian connections along the corridor road and campground entry 

road. Preliminary design was projected to cost more than $23 million and was dismissed 

due to the size and scope of the project and the scale of associated resource impacts. 

Campground Closure or Relocation: The interdisciplinary team discussed closing the 

Gros Ventre Campground entirely and relocating the public camping sites and 

administrative sites elsewhere in the park. This would increase/enhance wildlife habitat 

(riparian resources and wildlife migration) as well as increase human safety by separating 

humans from wildlife and the floodplain. The team dismissed this alternative due to a 

variety of reasons, both from the visitor use and park operations standpoint. 

With campground closure, there would be a loss of 385 campsites not only in Grand 

Teton National Park, but also in the Jackson Hole area. During mid-summer it may 

prove difficult for high numbers of visitors to find alternate camping in southern Jackson 

Hole. The park needs early season housing and/or RV parking in the southern portion of 

the park that the Gros Ventre Campground can provide. Being one of the southern-most 

campgrounds, it has the earliest opening, thus the longest season of the Grand Teton 

National Park campgrounds. It provides camping in the shoulder seasons when it is 

often difficult to find sites elsewhere in the county. Relocation of the campground 

elsewhere in the park would have required the disturbance of new areas, posing an 

impact to those areas. 

The interdisciplinary team also discussed the possibility of not closing the campground 

even though there has been no visitor demand for year-round camping. Not closing the 

campground would created additional impacts to elk and bison migrations and critical 

moose habitat and winter range from an increase in dispersed use by humans; potential 

cumulative effects on elk and bison related to future reductions in feed grounds on the 

National Elk Refuge; human safety concerns from campground occupancy during the 

fall elk reduction program; effects on trumpeter swans and bald eagles from dispersed 

use of humans adjacent to the Gros Ventre River; park operation impacts on 

maintenance from additional need for snow removal and from utility problems related to 

operating systems not designed for year round use (e.g., freezing pipes); and adverse 

impacts to the park’s contract with the concessioner by requiring operation of the 

campground during periods of low occupancy. Due to the wildlife and operational 

concerns, this option was not deemed a viable alternative and was dismissed from 

consideration in this Environmental Assessment. 
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2.6 MITIGATION MEASURES FOR ALTERNATIVE 2 

Mitigation measures are designed to prevent or minimize adverse impacts or to contain 

impacts within acceptable limits during and after project implementation of Alternative 

2. These mitigations and guidelines are specific to the project area and to the wildlife 

resource issues analyzed in this document. 

CULTURAL RESOURCES 

• All actions including mitigation, would require consultation with and clearance 

by the Wyoming State Historic Preservation Office under §106 of the National 

Historic Preservation Act. 

• Should construction unearth previously undiscovered archaeological resources, 

work would be stopped in the area of any discovery, and the park would consult 

with the state historic preservation officer/tribal historic preservation officer and 

the Advisory Council on Historic Preservation, as necessary, according to §36 

CFR Part 800.13, Post Review Discoveries. In the unlikely event that human 

remains are discovered during construction, provisions outlined in the Native 

American Graves Protection and Repatriation Act (1990) would be followed. 

• The National Park Service would ensure that all contractors and subcontractors 

are informed of the penalties for illegally collecting artifacts or intentionally 

damaging archaeological sites or historic properties. Contractors and 

subcontractors would also be instructed on procedures to follow in case 

previously unknown archaeological resources are uncovered during 

construction. Equipment traffic would be minimized in the area of the site. 

Equipment and materials staging areas would also avoid known archaeological 

resources. 

SOILS 

• Excavated soil may be re-used in the construction project; excess soil will be 

stored in approved areas. 

• Accepted erosion protection measures, such as sediment traps, erosion check 

screens/filters, jute mesh, and hydro mulch, would be used if necessary to 

prevent the loss of soil. 

• Any fill materials will be obtained from a park-approved source and approved by 

the Park Ecologist. 

• The contractors will control dust during construction by minimizing soil 

exposure, and watering and use of other dust prevention methods. 

• To minimize soil erosion at the project site, standard erosion control measures 

including silt fence and sandbags would be incorporated into action alternatives. 

Any trenching operations will use a rock saw, backhoe, and/or trencher, with 

excavated material side-cast for storage. After trenching is complete, bedding 

material would be placed and compacted in the bottom of the trench and the 

utility lines installed in the bedding material. Back filling and compaction would 

begin immediately after the utility lines are placed into the trench and the trench 
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surface would be returned to pre-construction contours. All trenching 

restoration operations would follow guidelines approved by park staff. 

Compacted soils will be scarified and original contours reestablished. 

• If construction is not complete prior to a winter season, all disturbed areas and 

soil stockpiles would be protected from snowmelt impacts by using erosion 

control best management practices and covering dirt piles with impermeable 

materials. 

VEGETATION 

• A Revegetation Plan will be developed for the project by park staff. The plan will 

incorporate, among other things, the use of native species, plant salvage potential, 

exotic vegetation and noxious weed management, and pedestrian barriers. 

• Pre and post-project exotic plant monitoring will also be conducted in the 

project area. Noxious weed control measures will be implemented and a 

management plan for continual maintenance will be drafted to monitor and 

mitigate impacts within the first three years of construction. 

• Existing populations of exotic vegetation at the construction site will be treated 

prior to the beginning of construction activities. 

• In an effort to avoid introduction of exotic plant species, only certified weed-free 

materials will be used for erosion control. Any proposed materials will be 

reviewed on a case-by-case basis; allowable materials for erosion control may 

include: rice straw, straws or hay determined by National Park Service to be 

weed-free purchased from a certified source (e.g., Coors barley straw or Arizona 

winter wheat straw), cereal grain straw that has been fumigated to kill weed seed, 

and wood excelsior bales. Standard erosion control measures such as silt fences 

and/or sand bags may also be used to minimize soil erosion. 

• The topsoil will be re-spread in as near as original location as possible, and 

supplemented with scarification, mulching, seeding, and/or planting with species 

native to the immediate area. Conserving topsoil would minimize vegetation 

impacts and potential compaction and erosion of bare soils. The use of conserved 

topsoil would help preserve micro-organisms and seeds of native plants. 

• No vegetation shall be damaged or removed without prior approval via the 

project documents or by park vegetation management staff. 

• Construction workers and supervisors will be provided with tree pruning 

guidelines. The adherence to these guidelines would minimize damage to trees 

during project implementation. 

• All disturbed areas will be restored as nearly as possible to pre-construction 

conditions shortly after construction activities are completed. Revegetation 

efforts will be conducted to facilitate reconstruction of the natural spacing, 

abundance, and diversity of native plant species. 

• Work limits, travel paths and staging areas will be designated and enforced to 

mitigate impacts to park vegetation. Fencing and barriers shall be used as 

necessary to restrict contractor operations to these areas. 
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• Construction should follow best practices for topsoil management, revegetation 

preparation and revegetation as outlined in the park ground disturbance guide. 

• Disturbance zones, construction and staging areas will be fenced or clearly 

marked to prevent impacts to resources outside the approved construction limits. 

WATER RESOURCES 

• Accepted erosion protection measures, such as sediment traps, erosion check 

screens/filters, jute mesh, and hydro mulch, will be used if necessary to prevent 

the loss of soil. 

• Fueling and fuel storage areas will be bermed and lined to contain spills. 

Provisions will be made (clay or plastic liners) for the containment and disposal 

of oil-soaked or contaminated soils. Construction equipment will be regularly 

inspected and maintained to prevent any fluid leaks. Contractors will promptly 

cleanup any leakage or accidental spills from construction equipment, such as 

hydraulic fluid, oil, fuel or antifreeze. 

• When construction is ended prior to a winter season, all disturbed areas and soil 

stockpiles will be protected from snowmelt impacts. 

• Wetland areas will be avoided when considering areas for construction rerouting and rehabilitation. 

• Place new facilities carefully, as far from the main river as feasible and definitely 

outside of any side channels. 

WILDLIFE 

• Construction workers and supervisors will be informed about special status 

species within the work vicinity. Contract provisions will require the cessation of 

construction activities if a species were discovered in the project area, until park 

staff re-evaluates the project. This would allow modification of the contract for 

any protection measures determined necessary to protect the discovery. 

• Under the Migratory Bird Treaty Act, no migratory bird, nest, or egg can be 

disturbed, removed or destroyed without formal consultation. To minimize the 

potential for “taking” a nest of any protected bird species, park resource 

managers will survey the site within a week before ground breaking activities 

commence to mitigate any potential issues in advance of site construction. 

• All contractors, employees, and visitors would be trained and required to comply 

with the park’s bear management plan during construction and operation of the 

campground facilities. All project staff, trainees, and other personnel would be 

briefed about food storage needs, and bear safety protocols. Food, fuel, and other 

attractants will be stored and handled to minimize potential conflicts (i.e. no 

food, garbage, drink, trash, or food and drink containers are to be placed outside 

vehicles, trailers, or bear-resistant containers except during times when they are 

being used). 

• Should bald eagle nesting occur within the project area, construction activity will 

be outside of a one-mile disturbance-free buffer zone around bald eagle nest 
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sites. Monitoring of eagle populations to identify and protect nests would 

continue. 

• Site cleanup will also minimize the likelihood of other animals investigating the 

area for water and scavenging and would reduce safety concerns related to 

people coming to the site for unlawful purposes after hours. 

• In addition to these general wildlife mitigation measures, wildlife mitigation 

measures specific to each of the alternatives are provided in the wildlife section of 

Chapter 3 of this document. 

PARK OPERATIONS/VISITOR EXPERIENCE 

• Contractors will coordinate with park staff to reduce the potential for disruption 

of normal park activities. Equipment will not be stored along the roadway 

overnight without prior approval of park staff. Construction workers and 

supervisors will be informed about the special sensitivity of park values, 

regulations, and appropriate housekeeping. 

• To minimize the potential for impacts to campground visitors, variations on 

construction timing will be considered. Options include conducting the majority 

of the work when the campground is closed or shoulder seasons, limiting the 

amount of work conducted at any one time during the peak season and 

implementing daily construction activity curfews. Unless additional time is 

authorized by park management, operation of heavy construction equipment will 

not occur between the hours of 7 PM to 7 AM to minimize the impacts of noise 

from construction activities to campground visitors and the natural quiet. 

• Traffic in any one direction would not be stopped for more than 15 minutes to 

minimize disruption of traffic flow during construction. 

• Information regarding implementation of this project and other foreseeable 

future projects will be shared with the public upon their entry into the park (and 

campground) during construction periods. This may take the form of an 

informational brochure or flyer about the projects distributed at the gate, 

postings on the park's website, posters on the campground bulletin boards, press 

releases and/or other methods. The purpose of these efforts will be to minimize 

the potential for negative impacts to the visitor experience at the Gros Ventre 

Campground during the implementation of this project and other planned 

projects during the same construction season. 

General Construction Best Management Practices 

• The construction practices listed below are subject to changes and additions 

when Best Management Practices are used during construction to mitigate 

impacts to resources. 

• To minimize the amount of ground disturbance, staging and stockpiling areas will 

be in previously disturbed sites, away from visitor use areas to the extent possible. 

All staging and stockpiling areas will be returned to pre-construction conditions 

following construction. 

• Parking of construction vehicles will be limited to these staging area and existing 
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roads and previously disturbed areas. 

• Construction zones will be identified and fenced with construction tape, snow 

fencing, or some similar material prior to any construction activity. The fencing 

will define the construction zone and confine activity to the minimum area 

required for construction. All protection measures will be clearly stated in the 

construction specifications and workers will be instructed to avoid conducting 

activities, including material staging and storage, beyond the construction zone as 

defined by the construction zone fencing. 

• The storage, handling, and disposal of all hazardous material and waste will 

comply with applicable federal and state regulations. Provisions will be made for 

storage, containment, and disposal of hazardous materials used on site. To 

minimize possible petrochemical leaks from construction equipment 

construction equipment will be monitored frequently to identify and repair any 

leaks and will be staged in designed areas suitable to contain leaking materials. 

Trained personnel will clean up and dispose of any leakage or spill from 

construction equipment such as hydraulic fluid, oil, or fuel. Fueling and fuel 

storage areas will be permitted only at approved locations and comply with park 

re-fueling guidelines. 

• Fueling and fuel storage areas will be bermed and lined to contain spills. 

Provisions will be made (clay or plastic liners) for the containment and disposal 

of oil-soaked or contaminated soils. Construction equipment will be regularly 

inspected and maintained to prevent any fluid leaks. Contractors will promptly 

cleanup any leakage or accidental spills from construction equipment, such as 

hydraulic fluid, oil, fuel or antifreeze. 

• Dust generated by construction will be controlled by spraying water on the 

construction site, if necessary. 

• To reduce noise and emissions, construction equipment will not be permitted to 

idle for long periods of time. 

• All construction equipment that will leave the road will be pressure washed 

before entering the park. 

• Contractor will partner with the National Park Service regarding impacts to 

visitor use during construction activities, while the campground is open to the 

public. 

• The National Park Service will obtain federal and state environmental permits 

required for this project. As part of the permitting process, other agencies could 

require additional mitigating measures. 

2.7 COMPARISON OF THE ALTERNATIVES 

Table 2.7a. summarizes the major components of Alternatives 1 and 2, and compares the 

ability of the alternatives to meet the project objectives (the objectives for this project are 

identified in section 1.2 Purpose and Need). The summaries provided in Table 2.7a. 

demonstrate that Alternative 2 meets each of the objectives identified for this project, 

while the No Action Alternative does not address all of the objectives. Table 2.7b. 
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summarizes the anticipated environmental impacts for Alternatives 1 and 2. Only those 

impact topics that have been retained for detailed analysis in Chapter 3 are included in 

this table. Chapter 3, Affected Environment and Environmental Consequences provides 

a more detailed explanation of these impacts. 

Table 2.7a. Comparison of Alternatives by the Project Objectives. 

Comparison of Alternatives & Methods Used to Ensure Objectives Are Met

OBJECTIVE Alternative 1 Alternative 2 

Upgrade and rehabilitate 

the critical infrastructure 

and utilities providing for 

sustainable and safe 

operations of the water, 

electric, and septic 

systems. 

No. Continuing the existing 

conditions would not ensure 

continued safe water and waste 

water conditions in the 

campground, threatening 

public health and the 

environment should a major 

malfunction occur. 

Infrastructure remaining 

within the flood-prone areas is 

subject to system failures. 

Yes. Upgrading and replacing 

infrastructure will assist in 

ensuring continued safe water 

and waste water conditions in 

the campground. Infrastructure 

will be removed from the floodprone areas improving 

operational efficiency and 

alleviating the potential for 

river/groundwater 

contamination. 

Establish the appropriate 

number of electrical RV 

sites in the campground to 

provide visitors a wider 

variety of experiences and 

ensure its operation is 

sustainable and 

financially feasible for the 

concessioner. 

No. It does not provide a wide 

variety of experiences for the 

visiting public. 

Yes. It will provide a wider 

variety of experiences for the 

visiting public, by providing the 

option of electric hookup 

campsites. 

As required by law, 

upgrade several campsites 

and comfort stations to 

meet accessibility 

standards. 

No. No facilities within the 

campground currently meet 

legal requirements of the 

Architectural Barriers and 

Americans with Disabilities 

Acts. 

Yes. Facilities will be upgraded 

to meet legal requirements of the 

Architectural Barriers and 

Americans with Disabilities Acts. 

Designate and design a 

portion of the campground 

for seasonal NPS, partner, 

and concessioner employee 

housing. 

No. The No Action Alternative 

would not provide additional 

housing, resulting in 

continuation of the seasonal 

housing shortage for NPS. 

Yes. Alternative 2 would provide 

additional housing for 

approximately 30 or more seasonal 

NPS, partner, and concessioner 

employees. 

Removal of infrastructure 

from the flood prone 

areas, as well as reducing 

the footprint and 

impervious surface of the 

campground, resulting in 

fewer operational 

emergency actions and 

increased natural 

resource benefits. 

No. No infrastructure would 

be removed from the flood 

prone areas. The campground 

will remain oversized and 

underutilized, in an area of 

prime wildlife habitat. 

Yes. The removal of 

infrastructure from the flood 

prone areas, as well as reducing 

the overall footprint and 

impervious surface of the 

campground, would result in 

fewer operational emergency 

actions and increased natural 

resource benefits. 
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Table 2.7b. Comparison of Impacts by Alternatives

IMPACT 

TOPIC 

Alternative 1 – No Action 

Alternative 2- Campground 

Improvements & Restoration 

(Preferred Alternative) 

Archaeological 

Resources No direct or indirect impacts. 

Negligible to minor cumulative 

impacts provided continued 

consultation with associated tribal 

groups and the SHPO on future 

projects. 

Direct and indirect impacts 

would be negligible. 

Cumulative impacts would be 

the same as Alternative 1. 

Ethnographic 

Resources No direct or indirect impacts. 

Negligible to minor cumulative 

impacts provided continued 

consultation with associated tribal 

groups and the SHPO on future 

projects.

Direct or indirect impacts would 

be negligible. Cumulative 

impacts would be the same as 

Alternative 1. 

Soils No direct, indirect, impacts. 

Overall adverse negligible to minor, 

long-term cumulative impacts to 

soils. 

Beneficial and adverse, minor, 

and long-term direct and 

indirect impacts. Overall 

adverse, negligible to minor, 

long-term cumulative impacts. 

Vegetation Adverse, minor, and long-term 

direct and indirect impacts. 

Net beneficial, minor, and longterm direct and indirect impacts. 

Surface & 

Groundwater Adverse, minor, long term direct 

and indirect impacts. 

Beneficial long-term direct and 

indirect impacts. 

Floodplains Adverse minor, long term direct 

and indirect impacts. 

Beneficial long-term direct and 

indirect impacts. 

Wildlife Adverse minor short- and longterm direct, indirect, and 

cumulative impacts. “May affect, 

but is not likely to adversely 

affect” gray wolves and Yellowbilled cuckoos. 

Negligible direct, indirect, and 

cumulative impacts. “May 

affect, but is not likely to 

adversely affect” gray wolves 

and Yellow-billed cuckoos. 

Park 

Operations 

and 

Partnerships 

Adverse minor to moderate direct, 

indirect, and cumulative impacts to 

park operations. 

Direct and indirect adverse and 

minor impacts in the short-term 

and beneficial, moderate 

impacts in the long-term. 

Overall adverse, minor to 

moderate long-term cumulative 

impacts. 

Visitor Use and 

Experience 

(Including 

Public Health 

and Safety) 

Adverse moderate and long-term 

direct and indirect impacts and 

negative contributions to overall 

beneficial moderate long-term 

cumulative impacts 

Beneficial moderate and longterm direct and indirect impacts. 

Positive contributions to overall 

beneficial moderate long-term 

cumulative impacts. 
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2.8 IDENTIFICATION OF THE ENVIRONMENTALLY 

PREFERED ALTERNATIVE 

The Council on Environmental Quality defines the environmentally preferred 

alternative as “...the alternative that will promote the national environmental policy as 

expressed in the National Environmental Policy Act’s §101.” Section 101 of the National 

Environmental Policy Act states that “... it is the continuing responsibility of the Federal 

Government to ... 

(1) fulfill the responsibilities of each generation as trustee of the environment for 

succeeding generations; 

(2) assure for all Americans safe, healthful, productive, and aesthetically and culturally 

pleasing surroundings; 

(3) attain the widest range of beneficial uses of the environment without degradation, 

risk to health or safety, or other undesirable and unintended consequences; 

(4) preserve important historic, cultural, and natural aspects of our national heritage, and 

maintain, wherever possible, an environment which supports diversity and variety of 

individual choice; 

(5) achieve a balance between population and resource use which will permit high 

standards of living and a wide sharing of life’s amenities; and 

(6) enhance the quality of renewable resources and approach the maximum attainable 

recycling of depletable resources.” 

Implementation of the No Action Alternative would fail to move the National Park 

Service toward achievement of all six of the goals set forth by the Council on 

Environmental Quality in §101 of the National Environmental Policy Act. Failure to 

address aging infrastructure and facility issues would likely result in adverse effects to 

health, safety, and the natural environment. As such, trustee obligations for future 

generations would not be met (goal 1), nor would the assurance of safe, healthful, 

productive, and aesthetically and culturally pleasing surroundings (goal 2). The No 

Action Alternative would not attain the widest range of beneficial uses of the 

environment because underused portions of the campground located in areas of 

valuable wildlife habitat would not be restored, thereby maximizing beneficial uses (goal 

3). In terms of goal 4, the No Action Alternative would not support the most diverse 

individual choices because of the limited mix of campsite uses and inaccessibility per the 

American Disabilities Act of 1965. For reasons already stated, as well as failure to address 

seasonal flooding of some campsites, the No Action Alternative would also fall short of 

achieving a balance between population and resource use that would permit high 

standards of living (goal 5). Finally, the No Action Alternative would also fall short of 

enhancing the quality of renewable resources and recycling depletable resources to the 

maximum extent practicable (goal 6) because such restoration and rehabilitation 

measures would not be implemented if current management conditions were to 

continue. 

Alternative 2 meets goals 1, 2, and 3, by the concentration of the campground footprint 

and by the replacement of failing infrastructure, which if the systems failed, could cause 

health, safety, and/or environmental degradation. The preferred alternative also achieves 
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goals 4 and 5, as visitors would be able to enjoy heightened amenities, including electric 

hookups, the maintained character of a small campground, and the addition of facilities 

compliant with the American Disabilities Act. Alternative 2 would meet the sixth goal 6 

by preventing wastewater dumping in non-designated areas, which has the potential to 

negatively affect streams and other waterways in the area. 

After careful review of potential resource and visitor impacts, and developing proposed 

mitigation for impacts to natural and human environment, the environmentally 

preferred alternative is Alternative 2, the National Park Service preferred alternative. 

Overall, Alternative 2 (1) provides a high level of protection of natural and cultural 

resources while concurrently attaining the widest range of neutral and beneficial uses of 

the environment without degradation; (2) maintains an environment that supports 

diversity and variety of individual choice; and, (3) integrates resource protection with an 

appropriate range of visitor uses. 
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CHAPTER 3: AFFECTED ENVIRONMENT & 

ENVIRONMENTAL CONSEQUENCES 

The Council on Environmental Quality requires that National Environmental Policy Act 

documents "succinctly describe the environment of the area(s) to be affected or created 

by the alternatives under consideration (1502.15)." Accordingly, this chapter describes 

the existing conditions of the biological, physical, cultural, and social resources that 

would be affected by the alternatives introduced in Chapter 2. This section contains the 

scientific and analytical foundation for comparison of the effects (the word “effect” is 

used interchangeably with “impact”) of the alternatives, where the alternatives are 

designed to define issues and provide a clear basis of choice. Described are the possible 

impacts of each alternative on the natural, cultural and social environments, in 

accordance with the impact topics identified in the Impact Topics section (1.7). For each 

impact topic this section first explains the affected environment and the methodology 

used for impact analysis. 

METHODOLOGY 

The impact analysis and conclusions contained in this chapter were based on park staff 

knowledge of the resources and site; review of existing literature and park studies; 

information provided by resource specialists within the National Park Service and other 

agencies; and professional judgment. 

In this section, the National Park Service takes a “hard look: at all potential impact topics 

by considering the direct, indirect, and cumulative effects of the proposed action on the 

environment, along with the connected and cumulative actions. Impacts are described in 

terms of context and duration. The context or extent of the impact is described as 

localized or widespread. The duration of impacts is described as short term, temporary 

effects typically confined to the construction period, or long-term, more permanent 

effects that would remain following construction. The intensity and type of impact is 

described as negligible, minor, moderate, or major, and as beneficial or adverse. The 

National Park Service equates “major” effects as “significant” effects under the terms of 

the National Environmental Policy Act. The identification of “major” impacts would 

trigger the need for an Environmental Impact Statement. Because definitions of intensity 

can vary by each impact topic, intensity definitions are provided separately for each 

impact topic analyzed in this EA. 

CUMULATIVE IMPACT SCENARIO 

The Council on Environmental Quality regulations, which implement the National 

Environmental Policy Act of 1969 (42 USC 4321 et seq.), require assessment of 

cumulative impacts in the decision-making process for federal projects. Cumulative 

impacts are defined as "the impact on the environment which result from the 

incremental impact of the action when added to other past, present, and reasonably 

foreseeable future actions regardless of what agency (federal or non-federal) or person 

undertakes such other actions" (40 CFR 1508.7). Cumulative impacts can result from 

individually minor, but collectively significant actions, taking place over a period of time 

(40 CFR 1508.7). Cumulative impacts are considered for both the No Action and 

Preferred Alternatives through identifying the geographic area of analysis for each 
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resource as well as other ongoing or foreseeable future actions within the vicinity of the 

impact area. 

The geographical boundary for a cumulative impact analysis changes depending on the 

resource topic. For most natural and cultural resources, the area of cumulative impact 

was the East Antelope Flats area, stretching from Gros Ventre Junction on Highway 

26/89/191, north to Blacktail Butte, the National Elk Refuge to the south, the Gros 

Ventre River to the East, the Antelope Flats Road to Hunter Hereford Ranch Junction. 

The area of analysis for water resources was the Gros Ventre watershed. The area of 

analysis for wildlife and threatened, endangered and sensitive species varied by species. 

The area of analysis for park operations and visitor use and experience was the Park. 

For this analysis, ongoing and reasonably foreseeable future recreation and development 

activities that are resource specific are identified under each impact topic. Given the 

geographical and temporal scope of the analysis, the following additional projects were 

identified for the purpose of making cumulative effects determinations: 

Grand Teton National Park Transportation Plan Final Environmental Impact 

Statement (September 2006) and Record of Decision (March 2007) The 

transportation plan addressed the management of transportation-related issues within 

the park and proposed a multi-use pathway system in the park. The preferred alternative 

in the plan identifies a non-motorized and separated pathway along US Highway 

26/89/191 outside of the road corridor from Jenny Lake south to the Gros Ventre River 

Bridge. There is also the potential for improved road shoulders from the Highway to the 

town of Kelly. 

Bison and Elk Management Plan Final Environmental Impact Statement for the 

National Elk Refuge, Grand Teton National Park, and John D. Rockefeller, Jr. 

Memorial Parkway (February 2007) and Record of Decision (April 2007) The US 

Department of the Interior, US Fish and Wildlife Service and National Park Service 

developed the Bison and Elk Management Plan and final environmental impact 

statement for managing bison and elk herds within the National Elk Refuge and Grand 

Teton National Park. The Gros Ventre Campground Environmental Assessment 

considered the bison and elk management plan in cumulative impact analyses for several 

impact topics, particularly wildlife. 

Laurance S. Rockefeller Preserve The Laurance S. Rockefeller Preserve is in the 

southwestern corner of Grand Teton National Park on the shore of Phelps Lake. The 

1,106-acre preserve is one of the most pristine, scenic, and wildlife-rich areas in the park. 

The land was conveyed to the National Park Service by the Rockefellers in November 

2007. Along with the conveyance, cabins from the property were donated to the park for 

use as employee housing in the Beaver Creek Area. These cabins displaced twelve 

seasonal RV sites within the park. 

North Highway 89 Pathways Project Environmental Assessment, Teton County, 

Wyoming (February 2009) and Finding of No Significant Impact (March 2009) A 

segment of separated multi-use pathway will be constructed on National Elk Refuge land 

located along the east side of US Highway 26/89/191 from the Town of Jackson north to 

the Gros Ventre Bridge. This pathway will establish connectivity between Grand Teton 

National Park and Teton County, Wyoming trail networks. 
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UNACCEPTABLE IMPACTS AND IMPAIRMENT ANALYSIS METHOD 

As described in Chapter 1, the National Park Service must prevent any activities that 

would impair park resources and values. The impact threshold at which impairment 

occurs is not always readily apparent. Therefore, the National Park Service applies a 

standard that offers greater assurance that impairment will not occur. This involves 

avoiding impacts that the National Park Service determines to be unacceptable; that is, 

they fall short of impairment, but are still not acceptable within a particular park’s 

environment. Because park managers cannot allow uses that would cause unacceptable 

impacts, they must evaluate existing or proposed uses and determine whether the 

associated impacts on park resources and values are acceptable. 

By preventing unacceptable impacts, park managers ensure that the proposed use of 

park resource will not conflict with the conservation of those resources. In this manner, 

park managers ensure compliance with the Organic Act’s separate mandate to conserve 

park resources and values. 

Impacts to Cultural Resources and §106 of the National Historic 

Preservation Act 

In this EA/ AEF, impacts to cultural resources are described in terms of type, context, 

duration, and intensity, which is consistent with the regulations of the Council on 

Environmental Quality that implement the National Environmental Policy Act. These 

impact analyses are intended, however, to comply with the requirements of both the 

National Environmental Policy Act and §106 of the National Historic Preservation Act. 

In accordance with the Advisory Council on Historic Preservation’s regulations 

implementing §106 of the National Historic Preservation Act (36 CFR Part 800, 

Protection of Historic Properties), impacts to archeological resources and the cultural 

landscape were identified and evaluated by (1) determining the area of potential effects; 

(2) identifying cultural resources present in the area of potential effects that were either 

listed in or eligible to be listed in the National Register of Historic Places; (3) applying 

the criteria of adverse effect to affected cultural resources either listed in or eligible to be 

listed in the National Register; and (4) considering ways to avoid, minimize or mitigate 

adverse effects. 

Under the Advisory Council’s regulations a determination of either adverse effect or no 

adverse effect must also be made for affected National Register eligible cultural 

resources. An adverse effect occurs whenever an impact alters, directly or indirectly, any 

characteristic of a cultural resource that qualify it for inclusion in the National Register 

(e.g. diminishing the integrity of the resource’s location, design, setting, materials, 

workmanship, feeling, or association). Adverse effects also include reasonably 

foreseeable effects caused by the preferred alternative that would occur later in time, be 

farther removed in distance or be cumulative (36 CFR Part 800.5, Assessment of Adverse 

Effects). A determination of no adverse effect means there is an effect, but the effect 

would not diminish in any way the characteristics of the cultural resource that qualify it 

for inclusion in the National Register. 

A §106 summary is included in the impact analysis sections under the Preferred 

Alternative. The §106 Summary is intended to meet the requirements of §106 and is an 

assessment of the effect of the undertaking (implementation of the alternative) on 

cultural resources, based upon the criterion of effect and criteria of adverse effect found 

in the Advisory Council’s regulations. 
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3.1 CULTURAL RESOURCES 

AFFECTED ENVIRONMENT 

DO–28: Cultural Resources Management Guidelines recognizes the management of 5

categories of cultural resources: (1) archeological resources, (2) cultural landscapes, (3) 

ethnographic resources, (4) historic structures, and (5) museum objects. All of these 

categories except archaeological and ethnographic resources were dismissed from 

detailed analysis as described in Chapter 1. 

Archaeological Resources

Although less than 10 percent of the lands within Grand Teton National Park have been 

surveyed, previous archeological surveys within the park and on adjacent lands suggest a 

seasonal settlement pattern for the Jackson Hole area. The park’s prehistoric sites 

represent a wide range of plant, animal, and stone procurement locations, seasonal 

camps, and plant processing features that represent more than 10,000 years of human use 

in Jackson Hole. 

The Gros Ventre Campground was inventoried in 2000 by the University of Wyoming. 

To date, no prehistoric sites are known to exist within the project location; however, 

seven archaeological sites have been recorded less than one mile from the project area. 

Three of these sites have not been evaluated for the National Register of Historic Places 

and four have been classified as eligible for nomination to the National Register of 

Historic Places. 

Ethnographic Resources

Ethnographic resources are defined by the National Park Service as any “site, structure, 

object, landscape, or natural resource feature assigned traditional, legendary, 

subsistence, or other significance in the cultural system of a group traditionally 

associated with it”(Cultural Resource Management Guidelines DO–28:191). The lands of 

Grand Teton National Park are associated with several American Indian groups 

including Blackfoot, Crow, Gros Ventre, Nez Perce, Northern Cheyenne, Northern 

Arapaho, Eastern Shoshone, and Shoshone –Bannock. 

The Grand Teton area has long been of importance to native cultures and figures in the 

religious beliefs and ceremonial practices of many groups. Although ethnographic 

resources significant to American Indians may be present in the vicinity of Gros Ventre 

Campground, no ethnographic resources are known to exist within the proposed project 

area. Consultation with associated tribes is ongoing and copies of this EA are to be 

forwarded to each tribe for review and comment. Should any of the tribes subsequently 

identify the presence of additional ethnographic resources within the project area, 

appropriate mitigation measures would be undertaken in consultation with the tribes. 

ENVIRONMENTAL CONSEQUENCES 

Methodology 

Section 106 of the National Historic Preservation Act requires a federal agency to take 

into account the effects of its undertakings on properties included in, eligible for 

inclusion in, or potentially eligible for inclusion in the National Register of Historic 

Places, and afford the following a reasonable opportunity to comment on such 

undertakings: the State Historic Preservation Officer, affiliated American Indian tribes 
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and, as appropriate, the Advisory Council on Historic Preservation, individuals and 

organizations with a demonstrated interest in the undertaking, and the general public. 

In accordance with the Advisory Council on Historic Preservation’s regulations 

implementing §106 of the National Historic Preservation Act (36 CFR Part 800, 

Protection of Historic Properties), impacts to cultural resources were identified and 

evaluated by (1) determining the area of potential effects; (2) identifying cultural 

resources present in the Area of Potential Effect that are either listed in or eligible to be 

listed in the National Register of Historic Places (categorized as “historic properties”); 

(3) applying the criteria of adverse effects to affected historic properties; and (4) 

considering ways to avoid, minimize, or mitigate adverse effects. 

Under the Advisory Council on Historic Preservation’s regulations, a determination of 

either adverse effect or no adverse effect is made for affected historic properties. An 

adverse effect occurs whenever an impact alters, directly or indirectly, any characteristic 

of a property that qualifies it for inclusion in the National Register of Historic Places, i.e., 

diminishing the integrity of the resource’s location, design, setting, materials, 

workmanship, feeling, or association. Adverse effects also include reasonably foreseeable 

effects that would occur later in time, be farther removed in distance, or be cumulative 

(36 CFR Part 800.5, Assessment of Adverse Effects). A determination of no adverse effect 

means that the property may be affected, but the effect would not diminish in any way 

the characteristics of the cultural resource that qualify it for inclusion in the National 

Register of Historic Places. 

Archaeological Resources 

Direct impacts to archaeological resources are measured by the data potential of an 

archaeological site and the extent of physical disturbance or degradation of the resource. 

Disturbance or degradation can occur as a result of grading, trenching, or other activities 

that damage the structure of an archeological site. 

Indirect impacts can occur as a result of increasing visitor activity or management action 

in the immediate vicinity, leading to unfortunate consequences such as artifact 

collection, accelerated soil compaction, and erosion. 

Proposed campground improvement areas were located on a base sheet provided by 

park staff, which identified known archeological resources and the completeness and 

adequacy of related survey data. It should be noted that this analysis only considers 

known archeological sites. The project area was inventoried in 2000 by the University of 

Wyoming. No Archaeological sites were identified within the proposed project area. 

Every effort will be made to avoid historic properties (i.e., those archeological site listed 

on or considered eligible for listing in the National Register of Historic Places) through 

careful project design and subsequent site-specific environmental compliance. If sites 

cannot be avoided, all data recovery to retrieve important information will be done in 

consultation with the Wyoming State Historic Preservation Office and in accordance 

with the Secretary of the Interior’s Standards and Guidelines for Archaeology and 

Historic Preservation. 
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Impact Threshold Definitions 

Negligible: Impact is barely measurable and has no perceptible consequences, either 

adverse or beneficial to archaeological resources. For purposes of §106, 

the determination of effect would be no historic properties affected. 

Minor: Adverse – Disturbance impacts would be perceptible and measurable, and 

would remain localized and confined to archeological site(s) with low to 

moderate data potential. The determination of effect for §106 would be 

no adverse effect. 

Beneficial - Maintenance and preservation of a site(s). The determination 

of effect for §106 would be no historic properties affected. 

Moderate: Adverse - Disturbance impacts would be sufficient to cause a noticeable 

change, and would generally involve one or more archeological sites with 

moderate to high data potential. Section 106 effect determination would 

be adverse effect. A Memorandum of Agreement is executed among the 

NPS and applicable state or tribal historic preservation officer and, if 

necessary, the Advisory Council on Historic Properties in accordance 

with 36 CFR 800.6(b). Measures identified in the Memorandum of 

Agreement to minimize or mitigate adverse impacts reduce the intensity 

of impact under the National Environmental Policy Act is from major to 

moderate. 

Beneficial -Stabilization of a site(s).The determination of effect for §106 

would be no historic properties affected. 

Major: Adverse - Disturbance impacts would result in substantial and highly 

noticeable changes, involving archeological site(s) with high data 

potential. The determination of effect for §106 would be adverse effect. 

Measures to minimize or mitigate adverse impacts cannot be agreed upon 

and the NPS and applicable state or tribal historic preservation officer 

and/or Advisory Council on Historic Properties are unable to negotiate 

and execute an Memorandum of Agreement in accordance with 36 CFR 

800.6(b). 

Beneficial - Active intervention to preserve a site(s). The determination of 

effect for § 106 would be no historic properties affected. 

Decision Making (DO–12) also calls for a discussion of the appropriateness of 

mitigation, as well as an analysis of how effective the mitigation would be in reducing the 

intensity of a potential impact, i.e., reducing the intensity of an impact from major to 

moderate or minor. Any resultant reduction in intensity of impact due to mitigation, 

however, is an estimate of the effectiveness of mitigation under National Environmental 

Policy Act only. It does not suggest that the level of effect as defined by §106 is similarly 

reduced. Although adverse effects under §106 may be mitigated, the effect remains 

adverse. 
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Effects of Alternative 1 – No Action Alternative on Archaeological Resources 

Direct/Indirect Impacts: Under the No Action Alternative, no improvements would occur 

and there would be no effect to archaeological resources. Any archaeological resources 

that may be present in the area would be preserved and protected in situ under this 

alternative. 

Cumulative Impacts: Past development of park facilities has likely impacted 

archaeological resources. Loss or disturbance of sites within the park (in conjunction 

with previous losses and prevailing threats to finite numbers of archaeological resources 

throughout the region) incrementally diminishes the overall understanding of Grand 

Teton’s cultural history. Continued consultation with associated tribal groups and the 

State Historic Preservation Officer on future projects would ensure that any adverse 

effects of future projects on cultural resources would be negligible to minor.

Conclusion: Because the proposed project area has been inventoried and no 

archaeological resources were located within the project area, there would be no direct 

or indirect impacts and negligible to minor cumulative impacts to archaeological 

resources under Alternative 1. There would be no unacceptable impacts or impairment 

to archeological resources since implementing the No Action Alternative would have no 

direct or indirect impacts to archeological resources. 

Effects of Alternative 2 – Action Alternative (Preferred) on Archaeological 

Resources 

Direct/Indirect Impacts: Because no archaeological resources have been identified within 

the proposed project area, there would be no direct or indirect impacts associated with 

implementation of Alternative 2. 

Cumulative Impacts: Cumulative impacts from implementation of Alternative 2 when 

combined with past and future actions would be the same as those described for 

Alternative 1. 

Conclusion: Because the proposed project area has been inventoried and no 

archaeological resources were located within the project area, there would be no direct 

or indirect impacts associated with the implementation of Alternative 2. Cumulative 

impacts to archaeological resources would be negligible to minor. There would be no 

unacceptable impacts or impairment to archeological resources since implementing the 

Preferred Alternative would have no direct or indirect impacts to archeological 

resources. 

Section 106 Summary

After applying the Advisory Council on Historic Preservation’s criteria of adverse effects 

(36 CFR Part 800.5, Assessment of Adverse Effects), the National Park Service concludes 

that the implementation of Alternative 1 or Alternative 2 would result in a “no historic 

properties affected” determination. 

Ethnographic Resources

Certain important questions about human culture and history can only be answered by 

gathering information about the cultural content and context of cultural resources. 

Questions about contemporary peoples or groups, their identity, and heritage have the 

potential to be addressed through ethnographic resources. As defined by the National 
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Park Service, an ethnographic resource is a site, structure, object, landscape, or natural 

resource feature assigned traditional legendary, religious, substance, or other 

significance in the cultural system of a group traditionally associated with it. Some such 

specific places of traditional culture may be eligible for inclusion in the National Register 

of Historic Places if they meet national register criteria for traditional cultural properties. 

For the purposes of analyzing potential impacts to ethnographic resources, the 

thresholds of change for the intensity of an impact are defined below. 

Impact Threshold Definitions 

Negligible: Impacts would be at the lowest levels of detection and barely perceptible. 

Impacts would neither alter resource conditions, such as traditional 

access or site preservation, nor alter the relationship between the resource 

and the affiliated group’s body of practices and beliefs. For purposes of 

§106, the determination of effect on traditional cultural properties would 

be no historic properties affected. 

Minor: Adverse - Impact(s) would be slight but noticeable and would neither 

appreciably alter resource conditions, such as traditional access or site 

preservation, nor the relationship between the resource and the affiliated 

group’s body of beliefs and practices. For the purposes of §106, the 

determination of effect on traditional cultural properties would be no 

historic properties affected. 

Beneficial – Impacts would allow traditional access and/or accommodate 

a group’s traditional practices or beliefs. For § 106, the determination of 

effect would be no historic properties affected. 

Moderate: Adverse–Impact(s) would be apparent and would alter resource 

conditions. Something would interfere with traditional access, site 

preservation, or the relationship between the resource and the affiliated 

group’s beliefs and practices, even though the group’s beliefs and 

practices would survive. For the purposes of §106, the determination of 

effect on traditional cultural properties would be an adverse effect. 

Beneficial - Impact would facilitate a group’s beliefs and practices. For the 

purposes of §106, the determination of effect on traditional cultural 

properties would be no historic properties affected. 

Major: Adverse– Impact(s) would alter resource conditions. Something would 

block or greatly affect traditional access, site preservation, or the 

relationship between the resource and the affiliated group’s body of 

beliefs and practices, to the extent that the survival of the group’s beliefs 

and/or practices would be jeopardized. For the purposes of §106, the 

determination of effect on traditional cultural properties would be 

adverse effect. 

Beneficial– Impact would encourage a group’s beliefs or practices. For the 

purposes of §106, the determination of effect on traditional cultural 

properties would be no historic properties affected. 
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Decision Making (DO–12) also calls for a discussion of the appropriateness of 

mitigation, as well as an analysis of how effective the mitigation would be in reducing the 

intensity of a potential impact, i.e., reducing the intensity of an impact from major to 

moderate or minor. Any resultant reduction in intensity of impact due to mitigation, 

however, is an estimate of the effectiveness of mitigation under National Environmental 

Policy Act only. It does not suggest that the level of effect as defined by §106 is similarly 

reduced. Although adverse effects under § 106 may be mitigated, the effect remains 

adverse. 

Effects of Alternative 1 – No Action Alternative on Ethnographic Resources 

Direct/Indirect Impacts: Under the No Action Alternative, no improvements would 

occur; therefore there would be no direct or indirect impacts to ethnographic resources. 

Any ethnographic resources that may be present in the area would be preserved and 

protected in situ under this alternative. 

Cumulative Impacts: Past development of park facilities has likely impacted ethnographic 

resources. Loss or disturbance of resources within the park (in conjunction with 

previous losses and prevailing threats to finite numbers of ethnographic resources 

throughout the region) incrementally diminishes the overall understanding of Grand 

Teton’s cultural history. Continued consultation with associated tribal groups and the 

State Historic Preservation Officer, on future projects would ensure that any adverse 

effects of future projects on cultural resources would be negligible to minor. 

Conclusion: The No Action Alternative would have no direct and indirect impacts to 

ethnographic resources and negligible to minor cumulative effects to ethnographic 

resources. There would be no unacceptable impacts or impairment to ethnographic 

resources since implementing the No Action Alternative would have no direct or 

indirect impacts to ethnographic resources. 

Effects of Alternative 2 – Action Alternative (Preferred) on Ethnographic 

Resources 

Direct/Indirect Impacts: Ethnographic resources have not been identified within the 

proposed project area, impacts would be negligible with the implementation of 

Alternative 2. 

Cumulative Impacts: Cumulative impacts from implementation of Alternative 2 when 

combined with past and future actions would be the same as those described for 

Alternative 1. 

Conclusion: Because the proposed project area is minimal compared to the acreage of the 

entire park, any ethnographic resources likely to occur inside the project area would also 

occur outside the project area. Under Alternative 2 there would be negligible direct, 

indirect impacts and negligible to minor cumulative impacts to ethnographic resources. 

Consistent with §1.4.7.1 of NPS Management Policies 2006 and the unacceptable impacts 

analysis method described earlier under “Methods for Analyzing Impacts,” Alternative 2 

would not result in any unacceptable impacts on ethnographic resources. The effects on 

ethnographic resources under this alternative would not be unacceptable because the 

potential impacts, which are adverse, are anticipated to be only negligible to minor in 

intensity and, thus, would not rise to the level where unacceptable impacts could occur. 
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Because no unacceptable conditions would result, there would be no impairment of 

ethnographic resources (by definition, impairment is worse than unacceptable impacts) 

under this alternative. 

Section 106 Summary

After applying the Advisory Council on Historic Preservation’s criteria of adverse effects 

(36 CFR Part 800.5, Assessment of Adverse Effects), the NPS concludes that the 

implementation of Alternative 1 or Alternative 2 would result in a “no historic properties 

affected” determination. Since tribal consultation is ongoing, copies of the EA would still 

be forwarded to each tribe for review and comment. 

3.2 SOILS 

AFFECTED ENVIRONMENT 

The soils in the Gros Ventre Campground derive mostly from cobbly, sandy material 

deposited by retreating glaciers approximately 12,000 years ago. Since the end of 

glaciation, biological, physical and chemical activity has worked together to gradually 

build the uppermost soil layers in existence today. Soils are defined by their physical 

attributes but are made biologically functional by a complex assemblage of invertebrates, 

fungi, algae, bacteria and vegetation. A disruption or loss of any of these physical or 

biological components can adversely affect soil function. Due to short growing seasons 

and a cool-to-cold climate, soils within the campground are generally thin and easily 

damaged. 

The Natural Resource Conservation Service mapped the soils within the Park in 1970–

1974 and published the soil survey in 1982. Soil names and descriptions proceed from 

this publication. Four main soil units exist within the Gros Ventre Campground (Table 

3.2.) The four soils are derived from two series: Tetonville and Tineman. 

Tetonville soils are found on floodplains and terraces. They are formed in alluvium. 

Tetonville soils are Entisols and as such show very little soil development. They have a 

thin mantle of fine, sandy loam in the upper 8 inches, but beyond eight inches, they are 

extremely gravelly loamy sand. By volume, Tetonville soils consist of more gravel and 

cobble than fine material. These soils can have a shallow water table in the months of 

May and June and are prone to flooding. However, the erosion potential from these 

soils is slight. Vegetation supported by Tetonville soils can be quite diverse, ranging from 

wetland vegetation, riverine forest, to upland shrub steppe. 

Tineman soils are usually very deep well drained soils formed by alluvium and glacial 

deposits. Tineman soils are Mollisols and reflect a greater degree of soil layer 

development and maturity. The upper layers of the soil (down to 27”) are brownish, 

gravelly loams. Beyond 27”, the soil consists of extremely gravelly sand. Tineman soils do 

not have the same shallow water table as the Tetonville soils, but during high-water, the 

table may be as shallow as 36”. Like, Tetonville soils, the Tineman soils are consist of 

more gravel and cobble than fine material. Again, erosion potential is slight. Tineman 

soils generally support upland grassland and shrubland vegetation, except in depressions 

or low points that collect water. In these areas, wetland species may be present. 
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Table 3.2. Description of Soil Survey Mapping Units within the Project Area. 

Soil Unit Description Location 

Tetonville gravelly 

loam 

Very deep, somewhat poorly drained soil. 

Formed from alluvium 

Southwest camp 

loops. 

Tetonville-Riverwash 

complex 

Very deep somewhat poorly drained soils 

formed in alluvium. Found on floodplains of 

Snake and Gros Ventre rivers. 

Northwest camp 

loops. 

Tineman gravelly 

loam 

Very deep, well drained soil along the Snake 

River. Formed of gravelly alluvium. 

North portions of 

campground 

Tineman association Very deep well drained soil formed in 

alluvium. 

Near amphitheater 

ENVIRONMENTAL CONSEQUENCES 

Methodology 

The baseline information used to assess impacts to soil resources is as described in the 

methodology section at the beginning of this chapter and includes park staff knowledge 

of the resources and site; review of existing literature and park studies; information 

provided by specialists within the National Park Service and other agencies; and 

professional judgment. Additional sources of information on soil resources used as a 

basis for this evaluation are as described above in the affected environment section. 

Impact Threshold Definitions 

Negligible: A change to soil that is not measurable or perceptible. 

Minor: A measurable or perceptible, small localized change to the soil resource. 

The change is of little consequence. 

Moderate: A change to soil or water resources that is measurable and of consequence 

but is localized. 

Major: A measurable change to the soil resource that is large and/ or widespread 

and could have permanent consequences for the resource. 

Effects of Alternative 1 – No Action Alternative on Soils 

Direct/Indirect Impacts: Soils within the Gros Ventre campground have been previously 

impacted by the original construction, and continue to be disturbed through visitor and 

administrative use. These disturbances have been local, adverse, minor and long-term. 

Because Alternative 1 involves no construction activity, no additional effects to soil are 

expected. However, under Alternative 1, two loops of the campground would remain 

open and functioning. Consequently, this alternative would not provide any long-term, 

beneficial effect from impermeable surface removal and site rehabilitation. 

Cumulative Impacts: Continued use of the campground under Alternative 1, combined 

with other activities in the area including construction of the mixed-use pathway south 
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of the Gros Ventre river, and the continued construction in, and use of the town of Kelly, 

Wyoming would result in overall adverse negligible to minor, long-term cumulative 

impacts to soils. The incremental contribution of Alternative 1 to these cumulative soil 

impacts would be negligible. 

Conclusion: There would be no direct or indirect impacts to soil resources under 

Alternative 1. The relative contribution of Alternative 1 to cumulative impacts to soils 

would be negligible; overall cumulative impacts to soils would be adverse and negligible 

to minor in intensity. There would be no unacceptable impacts or impairment to soils 

since implementing the No Action Alternative would have no direct or indirect soil 

impacts.

Effects of Alternative 2 –Action Alternative (Preferred) on Soils 

Direct/Indirect Impacts: Implementing alternative 2 would have both adverse and 

beneficial consequences for soil resources. The construction disturbance associated with 

campsite, water and sewer improvements would result in at approximately 5.9 acres of 

new disturbance. This disturbance can be expected to result in soil loss through erosion 

and soil compaction for a minimum duration of 3 years. Soil loss and compaction would 

affect some soil functions including, water infiltration, microbial support for vascular 

plants, carbon storage and habitat for soil invertebrates and small mammals. The effect 

of this disturbance can be mitigated to some degree by placing all new disturbances in 

areas within or adjacent to existing disturbed areas. Further, new disturbances would be 

reseeded, which should prevent future soil erosion from occurring. It is estimated that 

restoration of soil function in these impacted areas would take several decades. New 

ground disturbing activities under Alternative 2 would result in site specific, adverse, 

minor, long-term effects. 

Restoration of loops F and G, and amphitheater the parking lot reduction would result in 

the removal of 3.0 acres of pavement and the reclamation of an additional 5.0 acres of 

disturbed ground. Camp site closure and reclamation would beneficially affect some 8.0 

acres for the long-term and would create a net benefit of 2.1 acres to soil resources. This 

would have a localized, beneficial, minor, long-term effect on soil resources. However, 

these newly reclaimed areas would not regain function and characteristics similar to 

nearby undisturbed soil for many decades. 

Resultant direct and indirect impacts of Alternative 1 on soils would be beneficial and 

adverse, minor, and long-term. 

Cumulative Impacts: Current and future ground-disturbing activities within the area of 

analysis include administrative and visitor use of the Gros Ventre campground, grounddisturbing activities associated with Alternative 2, continued light construction in, and 

the occupation of Kelly, Wyoming, and the construction of a multi-use pathway from the 

Gros Ventre river to Jackson, Wyoming. All of these activities would result in adverse, 

long term, localized impacts through soil erosion and compaction. Removing and 

rehabilitating the two campground loops under Alternative 2 would have a beneficial, 

minor and long-term effect on soils within the project area. Generally speaking, the soils 

contained within the project area are well represented throughout both the area of 

analysis and Grand Teton National Park. 

Conclusion: There would be beneficial and adverse, minor, and long-term direct and 
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indirect impacts to soil resources under Alternative 2. The relative contribution of 

Alternative 2 to cumulative impacts to soils would be negligible. Consistent with §1.4.7.1 

of NPS Management Policies 2006 and the unacceptable impacts analysis method 

described earlier under “Methods for Analyzing Impacts,” Alternative 2 would not result 

in any unacceptable impacts on soils. The effects on soils under this alternative would 

not be unacceptable because the potential beneficial and adverse impacts are anticipated 

to be only negligible to minor in intensity and, thus, would not rise to the level where 

unacceptable impacts could occur. Because no unacceptable conditions would result, 

there would be no impairment of soils (by definition, impairment is worse than 

unacceptable impacts) under this alternative. 

3.3 VEGETATION 

AFFECTED ENVIRONMENT 

The Gros Ventre Campground encompasses approximately 170 acres. The campground 

is situated on a flat to southward sloping river terrace above the Gros Ventre River. 

Portions of the campground infrastructure are on two terraces which lie topographically 

above the main terrace on which the campsites are located. These upper terraces are 

dominated by shrub-steppe vegetation. Two plant communities dominate the 

campground. These are the cottonwood and sagebrush vegetation types. For the most 

part these are distinct communities, but there is an ecotone where the two intermingle. 

The cottonwood woodland is dominated by Populus angustifolia. Other tree species 

found in trace amounts include Picea pungens, Juniperus scopulorum, Pinus contorta, and 

Pseudotsuga menziesii. The shrub layer is dominated by Rosa woodsii and Shepherdia 

canadensis, with Lonicera involucrata, Betula glandulosa, Eleagnus commutata, Dasiphora 

floribunda, and Salix spp on more mesic portions of the site. The herbaceous layer is 

dominated by non-native grasses, including Poa compressa and Bromus inermis. Other 

common, but not dominant, species include: Erigeron compositus, Geum triflorum, 

Medicago sativa, Senecio fremontii, and Artemisia dracunculus. Moister microsites host 

forbs including Maianthemum stellatum, Equisetum laevigatum, Epilobium angustifolium, 

Carex microptera and Solidago canadensis. 

The sagebrush communities are dominated by Artemisia tridentata var. vaseyana. Other 

shrubs that occur here include Purshia tridentata, Symphoricarpos oreophilus, and 

Chrysothamnus nauseosus, all of which occur in patches. The understory is dominated by 

Poa compressa with species including Festuca idahoensis, Poa secunda, Eriogonum 

umbellatum, Opuntia fragilis, Balsamorhiza sagittata, Sedum lanceolatum, Elymus 

lanceolatus, Koeleria macrantha, and Comandra umbellatum also commonly present. 

The campground is host to a myriad of invasive plants, of which seven are listed as 

noxious weeds in the state of Wyoming, and in Teton County (a complete list is provided 

in Appendix B). These species, as well as Bromus tectorum, common name cheatgrass, 

are actively managed in Grand Teton National Park. 

No state-listed species of management concern have been found on the site, though 

Lesquerella paysonii is located within a mile radius. The site it is found on is on a higher 

terrace than the campground. The campground has been surveyed for sensitive plants, as 

well as specifically for Ute lady’s tress (Spiranthes diluvialis), with no evidence of the 

presence of it or any other sensitive plant species. 
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Exotic Plant Management 

Non-native species, also referred to as exotic or invasive, are not a natural component of 

the ecosystem. Management of populations of exotic plant and animal species, up to and 

including eradication, would be undertaken wherever such species threaten park 

resources or public health and when control is prudent and feasible. Executive Order 

13122 states that federal agencies are to prevent the introduction of invasive species, 

provide for their control, provide for restoration of native species and habitat conditions 

in ecosystems that have been invaded, and minimize the economic, ecological, and 

human health impacts that invasive species cause. 

Noxious weeds primarily occur along roadsides and trails, in developed areas and in 

other disturbed areas, including campgrounds, construction sites, gravel pits, and 

recently burned areas within the park. Roadsides are uniquely vulnerable to invasions by 

nonnative species because of continual disturbance resulting from maintenance 

activities, vehicular traffic, and runoff, as well as the roadway corridor acting as a vector 

for the spread of invasive species. The primary means of noxious weed spread include 

vehicles, wind, horses, wildlife, and humans (S. Haynes 2002, pers. comm.). Trails and 

campgrounds are also susceptible to weed infestations since seeds are easily carried and 

dispersed on shoes, socks, clothing, and pets. Weeds such as spotted knapweed 

(Centaurea maculosa), Russian knapweed (Acroptilon repens),Dyer’s woad (Isatis 

tinctoria), Dalmatian toadflax (Linariadalmatica), yellow toadflax (Linaria vulgaris), 

marsh sowthistle (Sonchus arvensis ssp. uliginosus), sulfur cinquefoil (Potentilla recta), 

perennial pepperweed (Lepidium latifolium), and leafy spurge (Euphorbia esula) are 

considered the park’s most invasive and difficult to control. All are adept at colonizing 

disturbed dry sites, often out-competing native vegetation and, in some cases, spreading 

into undisturbed areas. Other invasive species common within the park include musk 

thistle (Carduus nutans), bull thistle (Cirsium vulgare), Canada thistle (Cirsium arvense), 

oxeye daisy (Leucanthemum vulgare), orange hawkweed (Hieracium aurantiacum), 

common tansy (Tanacetum vulgare), St. Johnswort (Hypericum perforatum), 

houndstongue (Cynoglossum officinale), woolly mullein (Verbascum thapsus), and 

cheatgrass (Bromus tectorum). 

The Gros Ventre Campground is in the midst of the park’s largest infestation of spotted 

knapweed, requiring active treatment twice annually to prevent further infestation of the 

sensitive riparian habitat adjacent to the campground. Active treatment of eight noxious 

weed species has been ongoing in the campground for the past decade. Additional 

species, including Dalmatian toadflax and perennial pepperweed are located nearby and 

pose a risk to vegetation in the campground and its surroundings. Exotic plants at this 

site were inventoried in 2001, and again in 2005. A total of 28 new infestations were 

found during the 2005 survey. Most previously mapped populations are persistent, 

though some are diminished in size. Disturbances associated with the proposed 

campground rehabilitation are likely to exacerbate exotic species problems. These 

impacts can be mitigated somewhat through the use of practices including washing of 

vehicles before they enter the site and when they leave; minimizing ground disturbance, 

which creates openings for weed infestations; and pre-and post- disturbance weed 

treatments to decrease seed availability and dispersal. 
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ENVIRONMENTAL CONSEQUENCES 

Methodology 

Vegetation surveys of the Gros Ventre Campground were conducted in 2005. These 

surveys included a survey for rare and sensitive plant species, a survey of wetland species 

indicators, an invasive plant survey and a cottonwood survey , which included size and 

distribution data for deriving the number of cottonwood trees per acre in different areas 

of the campground. No rare or sensitive plant species were located within the project 

site. The presence of a limited number of native wetland species was observed; however, 

other wetland indicators were not present, which confirmed that there are no wetlands 

present within the project area. The exotic plant survey was used to update the previous 

exotic plant mapping which had been conducted as part of a 2001 inventory. 

Physical disturbances associated with the alternatives are compared to the existing 

vegetation as mapped on the park’s vegetation map, and as reflected in the vegetation 

surveys, to determine the impact of the proposed alternatives on park vegetation 

resources. 

Impact Threshold Definitions 

Negligible: Impact is barely measurable and has no perceptible consequences, either 

 adverse or beneficial to the park’s vegetation resources. 

Minor: A measureable or perceptible localized change to the vegetation 

resources. The change is to a small portion of the parkwide vegetation 

resources and does not include sensitive, rare, threatened, or endangered 

plant species or communities. 

Moderate: A measureable change to local vegetation resources which could have 

permanent consequences for local vegetative resources, or small portions 

of sensitive or rare species populations. 

Major: A measurable change to the vegetation resources with is large and/or 

widespread. This measurable change could have permanent 

consequences for vegetation resources, species or communities, through a 

substantial portion of their range. 

Effects of Alternative 1 – No Action Alternative on Vegetation 

Direct/Indirect Impacts: Under the No Action Alternative no improvements within the 

Gros Ventre Campground would occur. Vegetation resources would continue to be 

impacted by visitor use, including social trailing resulting in trampling of vegetation, 

human-induced spread of invasive plant species resulting from repeated introduction of 

propagules, and ground disturbance, which enables the establishment of exotic invasive 

plants. The continued use of the campground without improvements would result in the 

continuation of these impacts which are adverse, minor, and long-term. 

Cumulative effects: Continued use of the campground per Alternative 1, combined with 
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other activities in the area including recreational use of the river and roadway corridors, 

construction in and occupation of the nearby town of Kelly, construction of a multi-use 

pathway along Highway 89 and visitor traffic to the Mormon Row Historic District 

would continue the pattern of invasive species infestation and re-infestation of disturbed 

sagebrush and cottonwood plant communities. These impacts would not be made worse 

by Alternative 1 and would, to some extent, be mitigated by the on-going, long-term 

restoration of 4,500 acres of exotic agronomic grassland to native shrub-steppe 

vegetation. Under Alternative 1 there would be negligible cumulative impacts- this 

alternative does not substantively affect cumulative impacts to the area, which include 

the presence of vectors for noxious weed spread (adverse minor) and the restoration of 

native plant communities to abandoned agricultural lands (beneficial minor to moderate 

effect).

Conclusion: Under Alternative 1 there would be adverse, minor, and long-term direct 

and indirect impacts to vegetation and adverse and beneficial minor to moderate 

cumulative impacts to vegetation. Consistent with §1.4.7.1 of NPS Management Policies 

2006 and the unacceptable impacts analysis method described earlier under “Methods 

for Analyzing Impacts,” Alternative 1 would not result in any unacceptable impacts on 

vegetation. The effects on vegetation under this alternative would not be unacceptable 

because the potential adverse and beneficial impacts are anticipated to be only negligible 

to moderate in intensity and, thus, would not rise to the level where unacceptable 

impacts could occur. Because no unacceptable conditions would result, there would be 

no impairment of vegetation (by definition, impairment is worse than unacceptable 

impacts) under this alternative. 

Effects of Alternative 2 –Action Alternative (Preferred) on Vegetation 

Direct/Indirect Impacts: This alternative includes a number of activities that would impact 

vegetation resources in different ways. The alternative includes wastewater 

infrastructure improvements, including construction of a new leach field, construction 

access to the leach field, pipe installation and expansion of an RV dump station. Water, 

electric and sewer line installations would occur in loop E, electric line only trenching 

would occur in loop D. Proposed construction activities include the replacement of four 

comfort stations, with the new locations outside of the flood prone areas, a new well 

house, and changes in campsite configurations in loops E and F. Roadways, and 

campsites on the West side of the campground would be closed permanently and 

restored to native vegetation, as would half of the current amphitheater parking lot. 

The combined infrastructure improvements would remove 35 percent of the mature 

cottonwood trees from loop E without replacement. Limited, but existent, cottonwood 

regeneration is present in loop E. Vegetation resources would be impacted by 

construction, but revegetated, on 2.71 acres. Campsite, roadway, parking and 

infrastructure removal would result in 7.20 acres of previously developed areas being 

planted to native vegetation. Vegetation would be permanently removed on 0.52 acres. 

Vegetation removal and replacement with campground infrastructure would have local, 

moderate, long-term adverse effects. Vegetation impacted but revegetated would have 

short term adverse minor effects, caused by a short term lack of vegetation on these sites 

and the potential for invasive species expansion in disturbed areas. Removal of 

infrastructure and revegetation of 7.20 acres would have minor, long-term, beneficial 

effects. The combined impacts of Alternative 2 on vegetation resources would result in 

adverse, minor, short-term effects, and beneficial, minor long-term effects. These 
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impacts would result in net beneficial, minor, and long-term effects which would begin 

to be realized 5–15 years following completion of the project. 

Cumulative Effects: Under Alternative 2 there would be beneficial minor cumulative 

effects - this alternative provides long-term beneficial impacts to the cumulative effects 

analysis, which also include activities within the area that increase the presence of 

vectors for noxious weed spread (adverse minor) and the restoration of native plant 

communities to abandoned agricultural lands (beneficial minor to moderate effect). 

Conclusion: Under Alternative 2, the combined impacts of Alternative 2 on vegetation 

resources would result in adverse, minor, short-term effects, and beneficial, minor longterm effects. These impacts would result in net beneficial, minor, and long-term effects 

which would begin to be realized 5–15 years following completion of the project. Overall 

cumulative impacts would be beneficial and minor. Consistent with §1.4.7.1 of NPS

Management Policies 2006 and the unacceptable impacts analysis method described 

earlier under “Methods for Analyzing Impacts,” Alternative 2 would not result in any 

unacceptable impacts on vegetation. The effects on vegetation under this alternative 

would not be unacceptable because the potential beneficial and adverse impacts are 

anticipated to be minor in intensity and, thus, would not rise to the level where 

unacceptable impacts could occur. Because no unacceptable conditions would result, 

there would be no impairment of vegetation (by definition, impairment is worse than 

unacceptable impacts) under this alternative. 

3.4 WATER RESOURCES (SURFACE, GROUNDWATER & 

FLOODPLAINS) 

AFFECTED ENVIRONMENT 

Surface and Groundwater

The Gros Ventre River is a cobble-bed mountain river with a drainage area of 683 square 

miles. Elevations in the Gros Ventre watershed range from over 10,000 ft in the Gros 

Ventre mountains in the Bridger-Teton National Forest to about 6,200 ft at the river’s 

confluence with the Snake River. The lower Gros Ventre River has a severely braided, 

wide and shallow channel. Sand, cobble, gravel and non-cohesive soils, as well as sparse 

riparian vegetation make the river banks non-resistant, which facilitates susceptibility to 

bank sloughing and erosion. The State of Wyoming has designated this river as a Class 1 

– Outstanding Resource Water. This designation conveys the highest level of protection 

available under the auspices of the Clean Water Act – no further degradation is allowed. 

Water quality of the Gros Ventre River is being monitored at several locations by the 

Greater Yellowstone Inventory and Monitoring Network as part of their long-term 

monitoring program. The monitoring program has not detected any exceedance in state 

or national water quality standards. 

The mean annual hydrograph of the Gros Venter River at Kelly, Wyoming (upstream of 

the Gros Ventre Campground) is typical of a drainage basin dominated by snowmelt 

runoff processes. On average, peak flows occur in the late spring or early summer 

coincident with the timing of peak spring melt. Daily mean discharge records (as 

measured at the USGS gaging station at Kelly, Wyoming, for water years 1944-1958) 

reveal an average discharge of 474 cubic feet per second (cfs), with low flows around 100 
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cfs. A maximum daily mean discharge of 5,000 cfs was recorded in June of 1956. Gros 

Ventre River flows can be considerably affected by water withdrawals due to the 

numerous irrigation diversions which exist both above and below the project area. 

Ground water is recharged by infiltration of precipitation, stream flow leakage, irrigation 

water and inflow from other aquifers. Groundwater along the river is near (<15 ft) the 

surface. The water quality of the alluvial valley aquifer is excellent, and therefore 

supports utilization for drinking water supplies, recreation, and other commercial uses. 

Much of the aquifer exhibits high permeability and substantial interconnection to the 

rivers and lakes, making it vulnerable to contamination from the facilities, visitor use, 

and transportation corridors that exist in the recharge areas. Two groundwater wells are 

located and monitored at the Gros Ventre Campground. A hydrologic study of the lower 

Gros Ventre River was conducted in October, 2008. This study was designed to 

determine which reaches of the Gros Ventre are gaining (gain water from surrounding 

area) and which are losing (lose water to surrounding area). The project reach was 

determined to be an area where there are no net losses or gains to the system, but it is an 

area of substantial interchange with groundwater systems (personal communication, 

Gwen Gerber, NPS Water Rights Division, Ft. Collins, CO). 

Floodplains

The Gros Ventre Campground is located in an overbank area with many side channels 

and former main channels of the Gros Ventre River. The river channel itself, in this 

reach, is braided and occupies a wide and complex network of channels with very 

dynamic behavior related to sediment transport and occurrence of woody debris. This 

type of environment is difficult to hydraulically model and, therefore, difficult to 

determine meaningful floodplain boundaries. Even if a rigorous survey and model is 

constructed for a site like this, the unstable nature of the landscape can cause the 

floodplain boundaries to change over time making a floodplain map obsolete and 

therefore, this approach is not a realistic approach to use as a planning tool. In areas like 

this, a conservative floodplain determination can be made using geomorphic and/or 

vegetative evidence to estimate floodplain areas. In this case, the break from riparian 

vegetation to sage can be considered the floodplain boundary. This places all of the 

campground units in the floodplain. Grand Teton National Park is considered non-high 

hazard for purposes of floodplain compliance because high flows do not occur 

unpredictably (except very rarely due dam failure, human, beaver, or landslide). 

Flooding typically occurs as temperatures warm in the spring or after lots of rain making 

the chances of sudden flooding of a campground very remote. This makes evacuation 

(by implementing a closure policy of low camp units) a viable human flood hazard 

mitigation strategy. Furthermore, the valley is very wide in the campground area which 

would prevent deep flooding in the area except perhaps in some of the deeper side 

channels, further resulting in a low hazard environment for people. 

ENVIRONMENTAL CONSEQUENCES 

Methodology 

Surface and Groundwater

Impacts to surface water and ground water are defined at various levels described in the 

table below. Consideration of impacts and their disclosure is a function of risk, intensity, 
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duration and extent. Actions were evaluated for potential delivery of pollutants and 

proximity to water resources. 

Impact Threshold Definitions 

Negligible: An action with low potential to change water quality because of sufficient 

separation between the action and conveyance routes to the resource, or 

because the action does not generate sources of impact to water 

resources. 

Minor: An action that could affect changes in water quality by proximity to 

surface water, or involvement with non-toxic or nonpoint and minor 

sources of pollution that do not persist in the environment. 

Moderate: An action that could affect changes in water quality that are local in extent 

by proximity to surface water, or involvement with sources of pollution 

that are persistent in the environment and may be toxic to aquatic biota. 

Major: An action that could affect changes in water that extend beyond the local 

area due to proximity to surface water or involvement with sources of 

pollution that are persistent in the environment and may be toxic to 

aquatic biota.

 

Effects of Alternative 1 – No Action on Surface and Groundwater 

Direct/Indirect Impacts: The No Action Alternative maintains an undersized leach field to 

serve loops E and F and an outdated dump station. The four comfort stations located in 

loops F and G remain inside of the flood prone area based on flooding history and 

professional judgment by National Park Service employees assigned to the area. The 

amphitheater parking lot area would remain the same, thus maintaining the same area of 

impervious surface contributing to stormwater runoff. For these reasons, surface and 

ground water would be subject to adverse, minor and long term effects. 

Cumulative Impacts: Adverse, negligible cumulative effects on surface and groundwater 

resources could result under this alternative in combination with impacts of relevant, 

recent, ongoing and reasonably foreseeable actions within the Gros Ventre watershed. 

Conclusion: Alternative 1 would have adverse, minor and long-term direct and indirect 

impacts on surface and groundwater resources and adverse, negligible cumulative effects 

on surface and groundwater resources in the Gros Ventre watershed. Consistent with 

§1.4.7.1 of NPS Management Policies 2006 and the unacceptable impacts analysis method 

described earlier under “Methods for Analyzing Impacts,” Alternative 1 would not result 

in any unacceptable impacts on surface and groundwater resources. The effects on 

surface and groundwater resources under Alternative 1 would not be unacceptable 

because potential adverse impacts are anticipated to be only negligible to minor in 

intensity and, thus, would not rise to the level where unacceptable impacts could occur. 

Because no unacceptable conditions would result, there would be no impairment of 

surface and groundwater resources (by definition, impairment is worse than 

unacceptable impacts) under this alternative.
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Effects of Alternative 2 – Action Alternative (Preferred) on Surface and 

Groundwater 

Direct/Indirect Impacts: Alternative 2 would provide for installation of a new leach field 

to serve loops E and F and an expanded dump station. The four comfort stations located 

in loops F and G would be constructed outside of the flood prone area based on flooding 

history and professional judgment by National Park Service employees assigned to the 

area. All above ground roadways serving the group loop, loop G and 10 sites on the West 

Corridor Road west of loop F would be closed permanently and the area would be 

revegetated. The amphitheater parking lot area would be reduced by 50 percent. 

Minimal, short-term construction related activities associated with this alternative have 

the potential to produce non-point source pollution in the form of soil erosion, 

equipment fluid leakages, etc. This alternative presents a risk of degrading water quality 

due to its proximity to the Gros Ventre River (short-term, minor effect). Mitigating 

measures (section 2.6) would help protect these resources from sediment and other 

deleterious material. Alternative 2 would also results in a decrease in the area 

contributing to stormwater runoff. Overall, Alternative 2 would provide beneficial minor 

long term effects to surface and ground water resources. 

Cumulative Impacts: Negligible to beneficial minor cumulative effects on surface and 

groundwater resources could result under this alternative in combination with impacts 

of relevant, recent, ongoing and reasonably foreseeable actions within the Gros Ventre 

watershed.

Conclusion: Direct and indirect impacts to water resources would be adverse and minor 

in the short-term and beneficial and minor in the long term under Alternative 2. There 

would be negligible to minor beneficial cumulative effects to surface and ground water 

would. Consistent with §1.4.7.1 of NPS Management Policies 2006 and the unacceptable 

impacts analysis method described earlier under “Methods for Analyzing Impacts,” 

Alternative 2 would not result in any unacceptable impacts on surface and groundwater 

resources. The effects on surface and groundwater resources under Alternative 2 would 

not be unacceptable because potential adverse and beneficial impacts are not anticipated 

to exceed minor in intensity and, thus, would not rise to the level where unacceptable 

impacts could occur. Because no unacceptable conditions would result, there would be 

no impairment of surface and groundwater resources (by definition, impairment is worse 

than unacceptable impacts) under this alternative. 

Floodplains

Impacts to floodplains are defined at various levels described in the table below. 

Consideration of impacts and their disclosure is a function of risk, intensity, duration 

and extent. A preliminary floodplain assessment, based on geomorphic/vegetative 

evidence, was conducted to determine if the proposed activity had a chance of being 

located in applicable regulatory floodplain. The regulatory floodplain for this action is 

the 100-year floodplain. In compliance with Executive Order 11988 - Floodplain 

Management (1977), a Statement of Findings for floodplains has been prepared and 

incorporated into this analysis (Appendix C).
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Impact Threshold Definitions 

Beneficial: An action that removes facilities from location within the 100-year 

floodplain. 

Adverse: An action that maintains or increases facilities in the 100-year floodplain. 

Negligible: An action that is not located in the 100-year floodplain. 

Minor: An action that maintains or removes facilities in the 100-year floodplain 

by less than 10%. 

Moderate: An action that changes the number of facilities in the 100-year floodplain 

by more than 10%. 

Major: An action that changes the number of facilities in the 100 year floodplain 

by more than 50%. 

Effects of Alternative 1 – No Action on Floodplains 

Direct/Indirect Impacts: The No Action Alternative maintains existing facilities in the 

100-year floodplain, and is therefore subject to adverse, minor, long term effects. 

Cumulative Impacts: Negligible and long term cumulative effects on surface floodplains 

could result under this alternative in combination with impacts of relevant, recent, 

ongoing and reasonably foreseeable actions within the Gros Ventre watershed. 

Negligible and long term cumulative effects on floodplains could result under this 

alternative in combination with impacts of relevant, recent, ongoing and reasonably 

foreseeable actions within the Gros Ventre watershed. Although the park is not aware of 

any reasonably foreseeable projects that would be relevant to this cumulative impact 

analysis, such actions would include any placement or expansion of new or existing 

infrastructure within the Gros Ventre River floodplain, either within Grand Teton 

National Park or the Bridger Teton National Forest, or adjacent private lands. 

Conclusion: Under Alternative 1 there would be direct and indirect adverse, minor, and 

long-term impacts to floodplains and negligible cumulative impacts on floodplains.

Consistent with §1.4.7.1 of NPS Management Policies 2006 and the unacceptable impacts 

analysis method described earlier under “Methods for Analyzing Impacts,” Alternative1 

would not result in any unacceptable impacts on floodplains. The effects on floodplains 

under Alternative 1 would not be unacceptable because the adverse impacts are not 

anticipated to exceed minor in intensity and, thus, would not rise to the level where 

unacceptable impacts could occur. Because no unacceptable conditions would result, 

there would be no impairment of floodplains (by definition, impairment is worse than 

unacceptable impacts) under this alternative.

Effects of Alternative 2 – Action Alternative (Preferred) on Floodplains 

Direct/Indirect Impacts: This alternative would remove the four comfort stations in the 

flood prone zone and construct 2 new comfort stations out of the flood prone zone, but 

still within the 100-year floodplain. The existing leach fields for loops E and F would be 
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replaced with a new leach field located outside of the 100-year floodplain. This would 

result in minor beneficial long term, impacts to the Gros Ventre River floodplain. 

Additional beneficial impacts could be realized if all the individual sewer drain fields 

were eliminated and that all waste was collected in sewer mains and then lifted to drain 

fields located in the sage and out of the floodplain. 

Cumulative Impacts: Negligible to beneficial minor cumulative effects on floodplains 

could result under this alternative in combination with impacts of relevant, recent, 

ongoing and reasonably foreseeable actions within the Gros Ventre watershed. Although 

the park is not aware of any reasonably foreseeable projects that would be relevant to 

this cumulative impact analysis, such actions would include any placement or expansion 

of new or existing infrastructure within the Gros Ventre River floodplain, either within 

Grand Teton National Park or the Bridger Teton National Forest, or adjacent private 

lands. 

Conclusion: Under Alternative 2 there would be negligible to beneficial minor long-term 

direct, indirect and cumulative impacts to floodplains. Consistent with §1.4.7.1 of NPS

Management Policies 2006 and the unacceptable impacts analysis method described 

earlier under “Methods for Analyzing Impacts,” Alternative 2 would not result in any 

unacceptable impacts on floodplains. The effects on floodplains under Alternative 2 

would not be unacceptable because potential beneficial impacts are not anticipated to 

exceed minor in intensity and, thus, would not rise to the level where unacceptable 

impacts could occur. In addition, this alternative provides beneficial effects to 

floodplains. Because no unacceptable conditions would result, there would be no 

impairment of floodplains (by definition, impairment is worse than unacceptable 

impacts) under this alternative.

3.5 WILDLIFE, INCLUDING THREATENED OR 

ENDANGERED SPECIES 

AFFECTED ENVIRONMENT 

Grand Teton National Park provides habitat for a variety of wildlife species, including 61 

mammals, 4 reptiles, 6 amphibians, 19 fish, and 300 species of birds. Among the 61 

species of mammals are 6 native ungulates and 2 bear species. The project area is situated 

on the north side of the Gros Ventre River corridor. Meandering along the river’s course 

between the town of Kelly and Gros Ventre Junction is a continuous band of riparian 

cottonwood, willow, aspen, spruce, and sagebrush shrubland. The campground was 

constructed in some of the area’s highest quality riparian habitat. 

The river corridor runs east-west and provides a forested strip in an otherwise open 

landscape, connecting the Gros Ventre drainage and surrounding mountains and 

highlands with the Snake River corridor. The vegetation types found along the river 

corridor in the project area vicinity provide important breeding and seasonal habitats for 

a variety of wildlife. The corridor also serves as an important travel or movement conduit 

facilitating within home range movements, dispersals, and movements associated with 

mating, migration, and genetic interchange for a number of species. The river corridor is 

critically important to maintaining connectivity between spatially disjunctive individuals 

and populations. The campground also lies within an important north-south ungulate 
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migration corridor linking crucial winter ranges to the south with summer and 

transitional ranges further north. 

Threatened, Endangered, and Candidate Species

Gray wolf 

Gray wolves were native to the park but extirpated from the Rocky Mountain west in the 

first half of the twentieth century. In 1995 and 1996, wolves were reintroduced into 

Yellowstone National Park and central Idaho as part of an effort to recover the species. 

By 1997 dispersers from Yellowstone started exploring Jackson Hole, as of 2008, there 

were approximately 45-50 wolves in 6 packs that had home ranges overlapping portions 

of Grand Teton National Park. 

The home sites of two of these wolf packs, Antelope and Pinnacle Peak, are within 9.3 

miles (15 km) of the project area. Wolf home sites are important and relatively small 

areas where reproductive activities take place (Darimont and Paquet 2000). Home sites 

include the den sites, a series of rendezvous sites, and surrounding areas where pups are 

born, fed, raised, and protected between April and October. Important pup rearing 

activities take place within a 3,707-acre (15 km2

) area of the den within an annual home 

range. Den sites are frequently reused in successive years, highlighting their importance 

to successful reproduction and pack persistence. 

Canada lynx 

The US Fish and Wildlife Service listed the Canada lynx as threatened under the 

Endangered Species Act in 2000. There are no lynx sightings listed in the Grand Teton 

National Park historical database within 5 miles of the project area. There have been 

unconfirmed lynx sightings of unknown reliability within 10 miles of Gros Ventre 

campground, but these were in the forested habitats at the base of the Teton Range on 

the west side of the Snake River. The project area is not part of a Lynx Analysis Unit. 

Therefore, this species will not be considered further in this document. 

Yellow-billed Cuckoo 

Yellow-billed cuckoo (Coccyzus erythropthalmus) is a candidate species for listing as 

threatened or endangered. Little is known about the status and occupancy of the yellowbilled cuckoo in Grand Teton National Park. The only sighting of this species reported 

to the park was documented in 2001 at the Teton Science School’s monitoring avian 

productivity (MAP) station, near the eastern park boundary (NPS multi-year).

The Yellow-billed Cuckoo nests primarily in large stands of cottonwood-riparian habitat 

below 7,000 ft (2100 m). It is a riparian obligate species that prefers extensive areas of 

dense thickets and mature deciduous forests near water, and requires low, dense, 

shrubby vegetation for nest sites. Little is known about habitat requirements during 

migration, but Yellow-billed Cuckoos are most commonly observed in woodland and 

scrub habitat similar to that described above. The cottonwood-riparian habitat located 

within the project is suitable for nesting, foraging, and migrating cuckoo although no 

birds have been documented in the area. 

In recent years, cuckoo distribution in the west has been reduced considerably (USFWS 

2005). Biologists estimate that more than 90 percent of the bird’s riparian habitat has 

been lost or degraded as a result of human disturbance. Yellow-billed cuckoos are very 

sensitive to disturbance in the form of habitat modification and loss. Cuckoos are also 

sensitive to human presence and may abandon their nest if disturbed, especially during 

the nest building stage (Laymon 1998). 
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Mammals

A variety of large mammals are known or suspected to use the Gros Ventre Campground 

area, including elk (Cervus elaphus), bison (Bison bison), moose (Alces alces), mule deer 

(Odocoileus hemionus), pronghorn antelope (Antilocapra americana), grizzly bear (Ursus 

arctos horribilis), black bear (Ursus americanus), mountain lion (Puma concolor), wolves 

(Canis lupus), and coyotes (Canis latrans). 

Small and mid-sized mammals observed in the general Gros Ventre campground area, 

include bobcat (Lynx rufus), badger (Taxidea taxus), beaver (Castor canadensis), red fox 

(Vulpes vulpes), pine marten (Martes americana), porcupine (Erethizon dorsatum), river 

otter (Lontra canadensis), long-tail weasel (Mustela frenata), snowshoe hare (Lepus 

americanus), red squirrel, (Tamiasciurus hudsonicus), deer mice (Peromyscus 

maniculatus), voles (microtus pennsylvanicus), chipmunks (Eutamias umbrinus),Uinta 

ground squirrels (Spermophilus armatus), and pocket gophers (Thomomys talpoides). 

Elk

The elk that reside in Grand Teton National Park are part of the Jackson elk herd, the 

largest elk herd in North America. The majority of elk in the herd spend the winter on 

the National Elk Refuge (directly south of and adjacent to the project area) or on 1 of 3 

state operated feed grounds in the Gros Ventre drainage, where they are supplementally 

fed. The elk migrate to summer ranges in the Bridge-Teton National Forest, Yellowstone 

National Park, and Grand Teton National Park. A substantial portion of the Jackson 

Hole elk herd migrates through the project area during spring and fall movements 

between seasonal ranges. Large numbers of elk move through the Mormon Row 

Hayfields, Antelope Flats, Blacktail Butte, and Moose-Wilson Road areas of Grand 

Teton National Park and continue north toward traditional calving areas and summer 

ranges. 

The migration from winter range to summer range is generally complete by the end of 

May and elk are largely absent from the project area. However in some years, about 200 

elk have been known to summer on the refuge and may calve in the dense forested areas 

adjacent to the Gros Ventre Campground (i.e. Gros Ventre Hills/ National Elk Refuge) 

although this is not delineated parturition range (Boyce 1989; Smith and Robbins, 1994). 

The southward autumn migration typically peaks during October or November and ends 

in mid December, as reflected by their crossing of road transects en route to winter 

ranges (Boyce 1989; Smith and Robbins 1994), counts of elk on the National Elk Refuge 

(NER, unpublished data), and radio-telemetry data (GTNP, unpublished data). The 

availability, abundance, and quality of winter range would normally constrain elk 

population size in Jackson Hole. Heavy snow accumulation in the mountains and 

foothills reduces food availability and forces elk to migrate to lower elevations during the 

winter. Supplemental feeding of large numbers of elk occurs on the National Elk Refuge 

and Wyoming Game and Fish Department feed grounds during the winter and this 

activity allows more elk to winter in Jackson Hole than what native winter range would 

likely have supported. 

Pursuant to the parks enabling legislation, an elk reduction program is authorized within 

the park. The reduction generally starts in early to mid-October and ends in late 

November or early December. Concurrent elk hunting occurs on the National Elk 

Refuge and on the adjacent Bridger-Teton National Forest. The project area lies at the 

south end of hunt area 75, which sees moderate to intensive hunting pressure during the 

elk migration. 
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Moose 

Moose are widely distributed throughout Jackson Hole and can be found within the 

park at anytime of the year. Estimates from the 1960s suggest 200-300 individuals 

inhabited the valley throughout the year with as many as 500 additional individuals 

migrating to river bottoms and valley floor during the winter (Houston 1968). More 

recent Wyoming Game and Fish Department population estimates suggest that the 

moose population in Jackson Hole may have numbered in excess of 3,500 animals in 

1992 (D. Brimeyer pers. comm.). However, recent research has shown that the moose 

population in Jackson Hole has again declined, down to around 1,700 individuals in 2003 

(D. Brimeyer, pers. comm.). The reason for the population decline is unknown, but poor 

nutrition and predation have been speculated as important factors.

The entire Snake River drainage and low elevation portions of the Gros Ventre River 

drainage represent either “winter-yearlong” or “crucial moose winter range” (WGFD 

unpubl. data). Moose densities along the Snake River north of the Gros Ventre River 

confluence average about 6 moose per mile (Fralick 1989) but vary both seasonally and 

annually. Increases may occur during the autumn as the rutting season progresses, 

during winter when moose move to lower elevations, and during harsh winters. In 

contrast, moose densities at lower elevations may decrease when winters are mild or 

where there are high levels of human activity (Minta and Campbell 1991). As with many 

ungulates, severe winters appear to be a key factor causing population declines. Although 

willow and spruce forest vegetation types are preferred during winter; moose will select 

and use other habitat types based on snow depth (Matchett 1985). As winter progresses 

and snow accumulations become greater, moose use of older, denser stands of trees with 

a high conifer component and relatively shallow snow depths increases (Saether et al. 

1989). 

The Snake River drainage and the lower elevations of the surrounding mountains are 

also considered critically important reproductive and maintenance habitat to the 

Jackson Hole moose population (WGFD unpubl. data). Moose thrive in seral stages of 

shrub and tree communities (Coady 1982) and environmental disturbances that disrupt 

existing vegetative patterns and promote the formation of ecotones are generally 

beneficial to moose (Tefler 1978). Shrub communities interspersed with forest cover and 

riparian willow stands provide winter range to moose in Wyoming (Houston 1968). Both 

lowland and upland climax shrub habitats are heavily used during summer and fall (Van 

Ballenberghe and Miquelle 1990). Aquatic vegetation is used extensively where available, 

particularly in early summer. 

Bison 

The bison that reside in Grand Teton National Park are part of the Jackson bison herd, 

which currently numbers about 850 animals. Most of the herd winters on the National 

Elk Refuge, south of the project area, where they eat natural forage and, for 

approximately two months, supplemental alfalfa pellets. Because of the availability of 

supplemental feed on the refuge and few sources of natural mortality, the herd has 

grown exponentially from the 16 animals allowed to free range in 1969. Bison herd 

numbers are currently managed through an annual hunt which occurs from early 

September through mid December on the National Elk Refuge, Bridger-Teton National 

Forest, and state lands. Bison are not hunted in the park, but the National Elk Refuge 

hunt area lies directly south of the Gros Ventre Campground on the south side of the 

Gros Ventre River. 
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Radio-telemetry studies have shown that the Jackson bison have very consistent seasonal 

distributions and movements within the park (Cain et al. 2001, 2002, 2003 and 2004). In 

late winter and early spring, many of the bison move to the northern end of the National 

Elk Refuge and the southern end of Grand Teton National Park. Bison residing in Grand 

Teton National Park primarily use the sagebrush-grassland communities, especially in 

the Mormon Row, Kelly Hayfields, Antelope Flats, and Uhl Hill/ Wolff Ridge areas, and 

the irrigated pastureland and adjacent areas in and around Buffalo Valley. Northward 

migrations through Antelope Flats and the Snake River bottoms to primary summering 

areas continue during May and June. Because a majority of calving takes place during 

the transition between summer and winter ranges, births can happen anywhere from the 

National Elk Refuge to the northern portions of Grand Teton National Park (GTNP, 

unpubl. data). From late August through September bison begin moving south along the 

same migration routes used during spring. Typically large numbers of bison are present 

in the Mormon Row-Kelly hayfields, and Hunter-Talbot area throughout September 

and October, with some moving through the project area to the National Elk Refuge. 

Generally, most bison move onto the National Elk Refuge by December. 

Bison actively select recently burned sagebrush-grassland areas for several years postburn (Vinton et al. 1993) in response to increased abundance of preferred grass species 

(Pfeiffer and Hartnett 1995). This has been documented in Grand Teton National Park 

following wildland and prescribed fires in the southern portion of Antelope Flats. Late in 

2003 a large (~2,500 acres) wildfire started by lightning burned primarily sagebrushgrassland areas south of Blacktail Butte. In 2004, bison used this area extensively, 

especially from mid-summer through the fall and early winter (Cain et al. 2004). When 

using this area bison regularly accessed the Gros Ventre River in the vicinity of the Gros 

Ventre campground. 

Mule Deer 

Jackson Hole provides year-round habitat for mule deer which are abundant in Grand 

Teton National Park during non-winter months. Most of the park and its vicinity are 

classified as spring-summer-fall mule deer habitat. Primary mule deer summer range is 

on mountain slopes surrounding the southern portion of the valley, but mule deer can 

also be found summering within the Snake River floodplain. Mule deer use of lower 

elevations (e.g., along the Snake River and on the slopes of buttes and foothills) increases 

dramatically during the spring and fall months as mule deer migrate to and from winter 

range. Use of specific migration routes by mule deer in Jackson Hole is not common and 

migrating deer apparently use whatever routes are available to them (Campbell 1990). 

General mule deer movement routes are present within the park (e.g., along the Snake 

and Gros Ventre River) and are used by mule deer in route to and from crucial winter 

range located to the south on East and West Gros Ventre Buttes.

Mule deer winter range is limited in Jackson Hole and these ranges are generally 

confined to east- and south-facing slopes and bottomlands at low elevations in the 

southern portion of Jackson Hole. Some deer are known to irregularly winter along the 

Snake River south of the park depending upon the severity of the winter and/or the 

availability of artificial foods intentionally or unintentionally provided by humans. The 

number of deer wintering along the Snake River is unknown but appears to be increasing 

in response to intentional feeding efforts and recent mild winters. 

Pronghorn Antelope 

Pronghorn are seasonal residents of the project area. Approximately 200-300 pronghorn 
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summer in Grand Teton National Park and the Gros Ventre River drainage and generally 

migrate out of Jackson Hole to winter range in the Green River Basin 100 miles to the 

south (Sawyer and Lindzey 2000). 

The highest concentrations of pronghorn summering in Jackson Hole occur within 

Grand Teton National Park in the low-lying sagebrush communities on the east and west 

side of the Snake River floodplain (Segerstrom 1997), including Baseline Flats, the 

Potholes, south Antelope Flats, the Kelly hayfields (Sawyer and Lindzey 2000), and in the 

Elk Ranch area. Some of these animals also spend portions of the summer on the 

National Elk Refuge (Sawyer and Lindzey 2000). Key fawning areas for pronghorn in the 

park include the Kelly hayfields and Antelope Flats area, the Potholes, Lupine Meadows, 

and Elk Ranch (K. Berger 2002, pers. comm.). Fawning occurs between mid-May to midJuly and represents the time of year when this species is most sensitive to human 

disturbance (J. Berger 2002, pers. comm.). Reproductive rates for Jackson Hole and 

upper Gros Ventre River drainage pronghorn tend to be lower than the rest of the 

Sublette pronghorn herd to which they belong. This may be because of stress related to a 

lengthy migration or because there is a higher percentage of barren females that migrate 

to Grand Teton National Park (Sawyer and Lindzey 2000). It could also be that 

pronghorn fawns are more susceptible to predation by coyotes in Grand Teton National 

Park (Berger 2003). 

Pronghorn select forage with a high water content and will move from relatively dry 

ranges to more mesic sites in search of succulent vegetation (Minta and Campbell 1991). 

Forbs are an important part of the pronghorn’s diet. When forbs are scarce, pronghorn 

select the most succulent browse available. Considering only food habits, ranges 

dominated by forbs, browse (e.g., sagebrush, rabbitbrush), and grasses appear to provide 

the highest carrying capacity for pronghorn. 

Carnivores

Several species of carnivores can be expected to occur in or adjacent to the project area. 

Black (Ursus americanus) and grizzly (Ursus arctos )bears, bobcat (lynx rufus), mountain 

lion (Puma concolor), pine marten (Martes americana), weasels (Mustela spp.), red fox 

(Vulpes vulpes), coyote (Canis latrans), striped skunk (Mephitis mephitis), raccoon 

(Procyan lotor), and badger (Taxidea taxus) are all residents of the area. Wolverine (Gulo 

gulo) also may travel through the area while moving between more preferred habitats. 

Along the eastern base of the Teton Range, the western base of the Gros Ventre range, 

and on Blacktail Butte, mixed conifer habitats provide some of the park’s best bear 

habitat, with irregular openings and a diverse shrub under-story that includes Vaccinium 

spp. and other fruit producing plants. Black bears are common in these areas and can be 

expected to occur regularly in and near the project area. Coyotes, which are habitat 

generalists, are also very common. These habitats are also important to bobcat, mountain 

lion, and red fox, which occur at lower densities in the park and probably only pass 

through the project area occasionally. Pine marten, weasels, and skunks are year-around 

residents, and raccoons seem to be increasing in density along the Gros Ventre River. 

Grizzly bear occurrence in Grand Teton National Park has increased during the past 20 

years, most likely in response to increases in bear densities throughout the Greater 

Yellowstone Area (Pyare et al. 2004, Schwartz et al. 2002). Grizzly bears are now 

relatively common in the southern Greater Yellowstone Area including the Gros Ventre 

Mountains southeast of Grand Teton National Park and are regularly observed in the 
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Teton Mountain Range north of Paintbrush Canyon and the Badger Creek drainage 

(NPS 2005). Recently grizzlies have been more frequently observed on the valley floor, as 

far south as the Gros Ventre road near the Gros Ventre Campground, near the White 

Grass road and Phelps Lake areas, and in the Poker Flats vicinity near Teton Village 

(GTNP, unpublished data). Grizzly bears can be expected to occasionally use habitats 

near the project area for foraging and traveling. They can also be expected to enter the 

campground infrequently to investigate human food odors. 

Grizzly bears once ranged over most of western North America, from the Arctic Ocean 

to central Mexico. Although still abundant throughout much of Canada and Alaska, the 

range of grizzly bears in the lower 48 states is confined to 6 separate areas in Wyoming, 

Montana, Idaho, and Washington covering less than 1 percent of its historic range in the 

lower 48 states (USFWS 1993). Grizzly bears currently inhabit much of the Greater 

Yellowstone Area, including portions of Yellowstone National Park, Grand Teton 

National Park, and Bridger-Teton, Shoshone, Caribou-Targhee, Gallatin, and Custer 

National Forests. 

Between 1800 and 1975, this grizzly population was reduced from an estimated 100,000 

animals to less than 1,000 as a result of habitat destruction and intensive persecution 

from livestock interests (USFWS 1982). By 1974, some scientists estimated that fewer 

than 200 grizzlies remained in the Greater Yellowstone Area (Craighead et al. 1995). In 

1975, grizzly bears were listed as threatened under the Endangered Species Act in the 

lower 48 states. In 1982, a recovery plan for grizzly bear populations in the contiguous 

United States was completed and implemented (USFWS 1982). Guidelines for grizzly 

bear recovery were developed in 1983 by the Interagency Grizzly Bear Committee (IGBC 

1986). Recovery zones and population goals were established in the Grizzly Bear 

Recovery Plan (USFWS 1982) and revised Grizzly Bear Recovery Plan (USFWS 1993). 

These plans established 6 grizzly bear recovery zones in the contiguous United States, 

one of which encompassed a portion of the Greater Yellowstone Area including much of 

Grand Teton National Park. The revised Grizzly Bear Recovery Plan established 

measurable population parameters as indicators of population status for the Greater 

Yellowstone Area (USFWS 1993). 

All grizzly bear population recovery parameters were achieved for the first time in 1994, 

but grizzly bear mortality limits were exceeded during the next 3 years (1995-97). All 

population recovery parameters were again achieved from 1998-2001 and habitat-based 

recovery criteria, a conservation strategy, and state plans were developed by 2007, when 

the US Fish and Wildlife Service removed grizzly bears from threatened species status. In 

2008, recovery mortality limits were exceeded, raising concern for future management of 

human-caused mortalities in the ecosystem. 

Approximately 125,000 acres of Grand Teton National Park are within the Primary 

Conservation Area as defined by the Conservation Strategy for the Grizzly Bears in the 

Yellowstone Ecosystem (USFWS 2003). Development within this zone is restricted and 

requires an equivalent area within the conservation area to be restored as useable grizzly 

bear habitat. 

Management of grizzly bears and grizzly bear habitat in Grand Teton National Park 

follows the Conservation Strategy (USFWS 2003) and the park’s Human-Bear 

Management Plan (NPS 1989). Management of grizzly bears in both the Greater 

Yellowstone Area and, more specifically, in Grand Teton National Park has been highly 
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successful in promoting grizzly bear recovery and reducing bear-human conflicts (e.g., 

property damages, incidents of bears obtaining human food, bear-inflicted human 

injuries) and human-caused bear mortalities in the park. Recreational and administrative 

facilities, human activities, and human waste (garbage and sewage) in Grand Teton 

National Park are managed in a manner that results in relatively few human-caused 

grizzly bear mortalities. 

Bears, both grizzlies and black, in Grand Teton National Park are subject to being killed 

by human activities, including those associated with accessing and using campgrounds. A 

total of 3 Grizzlies and 17 Black bears have been hit and killed by vehicles from 1992–

2008 in the park (GTNP, unpubl. data). An average of about 1 black bear a year is killed 

by park officials because of human food conditioning and aggressing behavior that 

threatens humans. Many of the incidents that result in bears becoming human food 

conditioned occur in campgrounds due to visitors’ non-compliance with food storage 

regulations. Two grizzly bears that frequented park developments eventually were killed, 

although both bears had nuisance histories outside the park prior to these incidents. One 

was captured after breaking into the University of Wyoming/ National Park Service 

research center at the AMK ranch. After being relocated to the north end of the 

ecosystem, it was euthanized by Montana officials after it immediately resumed nuisance 

behavior in a new area. Another Montana nuisance bear was trapped in Grand Teton 

National Park after it was relocated to the Teton Wilderness and then was involved in 

several incidents in the Flagg Ranch campground. It was subsequently transferred to 

Montana where officials made the decision to destroy it. 

Recently the park has experienced a substantial increase in the number of human 

habituated (but not food conditioned) grizzlies that go about their daily routines in close 

proximity to humans and their developments, particularly roads. These bears, because 

they are not afraid of approaching developments such as campgrounds, are more 

vulnerable to becoming food conditioned and ultimately destroyed. Thus the probability 

of grizzly bears developing nuisance behavior has increased in recent years, both because 

of higher bear densities and habituation to human activities.

Special-Concern Species

The Comprehensive Wildlife Conservation Strategy, a collaborative effort developed by 

the Wyoming Game and Fish Department (2005) and experts throughout Wyoming, 

identifies species of greatest conservation need. Relevant park-wide special-concern 

species are those that occupy habitats within the project area and are listed in Table #. 

Input regarding special-concern species also was obtained from the US Fish and Wildlife 

Service (Kelly 2005) and Wyoming Game and Fish Department (Wichers 2005) during 

scoping. 

Table 3.5. Species of Concern that may occur in the Project Area. 

Common Name Scientific Name WGFD 

Status* 

Potential for 

Occurrence 

in Project 

Area 

Boreal Western Toad Bufo boreas boreas NSS2 Likely 

Northern Leopard Frog Rana pipiens NSS4 Unlikely 

Columbia Spotted Frog Rana luteiventris NSS5 Unlikely 

Sagebrush lizard Sceloporus graciosus graciosus NSS4 Unlikely 
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Trumpeter Swan Cygnus buccinator NSS2 Likely 

Bald Eagle Haliaeetus leucocephalus NSS2 Likely 

Greater Sage Grouse Centrocercus urophasianus NSS2 Likely 

Long-billed Curlew Numenius americanus NSS3 Unlikely 

Brewer’s sparrow Spizella breweri NSS4 Likely 

Sage thrasher Oreoscoptes montanus NSS4 Likely 

*WGFD Status: 

NSS2 = Populations restricted or declining in numbers and/or distribution; extirpation in Wyoming is not 

imminent AND ongoing significant loss of habitat. 

NSS3 = Populations restricted or declining in numbers and/or distribution; extirpation in Wyoming is not 

imminent AND habitat is restricted or vulnerable but no recent or on-going loss; species is sensitive to 

human disturbance. 

NSS4 = Species is widely distributed; population status and trends within Wyoming are assumed stable AND 

habitat is restricted or vulnerable but no recent or on-going significant loss; species is sensitive to human 

disturbance. 

Species that are likely to be found in the project area are discussed below. The amphibian 

and reptile species of concern are discussed in a separate Amphibian and Reptile section. 

Brewer’s sparrow and sage thrasher 

Brewer’s sparrow and sage thrasher, both sagebrush obligates, occur throughout 

Wyoming including Grand Teton National Park. Each of these species depends on 

sagebrush habitats for breeding and nesting. Brewer’s sparrows may also be found in 

dense shrubs at higher elevations as well as in some willow habitats. The Wyoming Game 

and Fish Department classifies sage thrasher and brewer’s sparrow as a Species of Special 

Concern with a Native Species Status of 4 (NSS4) because populations are declining and 

their habitat is vulnerable (WGFD 2005). 

The project area contains suitable breeding, nesting and foraging habitat for sage 

thrasher and brewer’s sparrow. Both species are known to occupy the sagebrush areas 

adjacent to the campground including where the leach field is proposed (GTNP, 

unpublish. data). 

Trumpeter swans 

Trumpeter swans inhabiting the Park are a part of the Rocky Mountain Population. This 

population is comprised of 2 separate breeding flocks: the migratory Canadian flock that 

breeds in Canada and the year-round resident Tri-state flock that occupies the Greater 

Yellowstone Ecosystem and surrounding areas in Idaho, Montana, and Wyoming. Swan 

populations in the Tri-State showed marked declines between the mid-1960’s and the 

mid-1980’s. Concern over the long-term decline of Tri-state swan numbers lead to the 

recent petition for listing this population as threatened or endangered under the 

Endangered Species Act. Many reasons are responsible for this decline including 

competition with migratory flocks of swans on marginal winter range, variable 

reproduction rates, habitat loss and high cygnet mortality. In recent years, populations in 

Wyoming and the rest of the Rocky Mountain Population increased due to captive 

breeding programs and habitat conservation; however productivity in Grand Teton 

National Park has continued to decline. 

Swans use riparian areas such as lakes, ponds, rivers and reservoirs for nesting and 

foraging. They initiate nesting when these areas thaw, typically in late April or early May. 

Eggs hatch in early June and cygnets usually fledge in September. Swans use open water 

along rivers and lakes for foraging in the late fall and winter. 
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Twelve swan nesting territories are monitored by park personnel each year for site 

occupancy, nest success, and number of cygnets that successfully fledge. Eight sites were 

occupied in 2008 but only two successfully fledged young (GTNP, unpublish. data). 

No trumpeter swan nest territory is in or adjacent to the project area. The nearest known 

swan nesting territory is located on the northern end of the National Elk Refuge. Swans 

do use the Gros Ventre River corridor throughout the year for foraging and loafing. 

The bald eagle was federally listed as an endangered species in Wyoming in 1967. After 

several decades of protection, recovery goals were met and they were de-listed in 2007. 

They continue to be considered a species of concern in the park and by Wyoming Game 

and Fish Department and are protected under the 1918 Migratory Bird Treaty Act (16 

U.S. Code 703), and the 1940 Bald Eagle Protection Act (16 U.S. Code 668). 

Grand Teton National Park contains 12 known nesting eagle territories and pairs; 

however, not all nests successfully fledge young each year. Known territories are located 

along the shorelines of the Snake River, Jackson Lake, and adjacent riparian areas. Many 

of the bald eagles that nest in the park remain on their nest territories throughout the 

year, occasionally leaving for short periods during the non-breeding season to exploit 

abundant or ephemeral food sources elsewhere. Eagles feed primarily on fish, waterfowl, 

and carrion. 

No bald eagles nest within the project area. A pair of eagles has intermittently occupied a 

nest located approximately 2 miles downstream from the project area; however they 

have never produced young at this territory. Eagles use the Gros Ventre River yearround for hunting and foraging. 

Greater sage-grouse 

Greater sage-grouse numbers have declined over the past several decades throughout 

the West, including Wyoming. These declines have resulted in the petitioning for their 

listing under the Endangered Species Act. The US Fish and Wildlife Service determined 

that listing the greater sage-grouse as threatened or endangered was unwarranted (70 

Federal Register 2244, February 12, 2005); however, in a December 4, 2007 ruling, US 

District Judge Lynn B. Winmill directed the Service to reconsider this decision. The 

exact cause of sage-grouse decline has not been conclusively identified but is thought to 

be related to permanent loss, degradation and fragmentation of key habitat, as well as 

low nest productivity. State and local working groups initiated conservation planning 

efforts that focus on providing guidelines for sustaining and/or perpetuating sage-grouse 

populations through consistent and up to date management strategies. In Wyoming, the 

Wyoming Greater Sage-Grouse Conservation Plan (WGFD 2003) outlines these 

guidelines. In addition, the Upper Snake River Sage-Grouse Working Group developed a 

conservation plan that outlines recommendations for grouse management and 

conservation in the Jackson Hole area. 

Sage-grouse depend on sagebrush communities for their entire life cycle. They breed on 

mating grounds called leks which are generally open areas such as meadows, low 

sagebrush zones, ridge tops, and old lakebeds surrounded by denser sagebrush cover 

(Connelly et al. 1981). Soon after breeding, females disperse to nesting areas 

characterized by relatively dense, tall, mature sagebrush stands (Connelly et al. 2000, 

Holloran and Anderson 2004). Early brood-rearing habitat is typically close to nest sites 

(Gates 1984) and in dense, mature sagebrush stands (Holloran and Anderson 2004). As 

the summer progresses, hens and their young will also use relatively open sagebrush 
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stands that have good grass and forb cover (Lyon 2000). In the winter, sage-grouse use 

dense, tall stands of mature sagebrush for both food and cover. Low sagebrush stands on 

open windswept knolls are also used as feeding sites. 

Currently there are 3 known active leks in Grand Teton National Park as well as several 

intermittently used and satellite leks. No known leks are located within or near the 

project area. The sagebrush communities surrounding the Gros Ventre campground do 

contain suitable nesting, brood-rearing and wintering habitat. 

Neotropical Migratory Bird Species 

Neotropical migratory birds include raptors, passerines, and shorebirds that breed in 

North America, but migrate to Mexico, Central and South America for the winter. In 

Wyoming, 162 bird species are considered neotropical migrants (Cerovski et al., 2001) 

with peak migration periods occurring in May and September through early October. 

Nesting is typically initiated from mid-May to mid-June and most young fledge nests 

sometime in June to late-July; however these dates vary annually due to snow melt and 

leaf-out of trees and shrubs. 

Neotropical migratory birds are of particular concern to wildlife managers because they 

have been experiencing severe population declines throughout their North American 

range (Askins et al. 1990). Habitat fragmentation and loss of winter range are among 

factors believed responsible for these declines (Hutto 1988, Robbins et al. 1989). 

All migratory birds in the park are protected under the Migratory Bird Treaty Act, 16 

U.S.C. 703, enacted in 1918. This act prohibits the taking of any migratory birds, their 

parts, nests, or eggs. Removal of nests or nest trees is prohibited, but may be allowed 

once young have fledged. 

Numerous neotropical migratory bird species, residents, and other migrants that are not 

designated as sensitive by the US Fish and Wildlife Service or Wyoming Game and Fish 

Department occur and breed in Grand Teton National Park and the project area. These 

species include but are not limited to: osprey, vesper sparrow, chipping sparrow, rubycrowned kinglet, northern flicker, downy woodpecker, hairy woodpecker, yellow 

warbler, yellow-rumped warbler, white-crowned sparrow, western tanager, red-tailed 

hawk, and numerous others. 

Long-term bird projects conducted in the park indicate that riparian and wetland 

habitats generally contain the highest density of bird species in Grand Teton National 

Park (M. Cody, S. Wolff pers comm.). In addition, many bird species of special concern 

migrate, breed and nest throughout the park in riparian habitats and sagebrush-grassland 

plant communities and deciduous and coniferous forests. The mixture of riparian and 

upland habitats found within the proposed project area makes it certain that a variety of 

resident and neotropical migratory bird species are present and breed in and adjacent to 

the project. 

Amphibians and Reptiles 

Several species of amphibians and reptiles are present in Grand Teton National Park 

(Baxter and Stone 1980, Koch and Peterson 1995) including tiger salamander 

(Ambystoma tigrinum), western spotted frog (Rana pretiosa), boreal toads (Bufo boreas), 

western chorus frog (Pseudacris triseriata), wandering garter snake (Thamnophis 

elegans), valley garter snake (Thamnophis sirtalis), rubber boa (Charina bottae), northern 

sagebrush lizard (Sceloporus graciosus), and perhaps bullsnakes (Pitophis melanoleucas). 
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The majority of these species commonly inhabit wet areas within riparian zones and 

elsewhere on the valley floor and foothill regions (Koch and Peterson 1995), with the 

exception of rubber boas that are typically found in mesic forested areas with heavy 

ground cover (Baxter and Stone 1980). Populations of most of these species, with the 

exception of boreal toads and sagebrush lizards, appear healthy and are relatively 

common in Jackson Hole. 

Western boreal toads are present within Grand Teton National Park. The southern 

Rocky Mountain population of western boreal toads has been a Candidate Species for 

listing under the ESA since 1995. The listing is considered warranted but precluded by 

US Fish and Wildlife Service due to higher priority species and activities. The northern 

Rocky Mountain population within the Greater Yellowstone Ecosystem, including 

Jackson Hole and Grand Teton National Park, can be locally abundant, but appears to be 

less widespread than it was in the 1950’s (Koch and Peterson 1995). Boreal toads inhabit 

mesic areas in the foothills, montane and subalpine life zones, willow marshes, and aspen 

or spruce-fir stands (Baxter and Stone 1980). Adult boreal toads are known to occupy 

the study area although no breeding activity has been reported (S. Wolff, pers comm.).

Northern leopard frogs (Rana pipiens) were historically present in Grand Teton National 

Park but observations confirming their continued existence are lacking (Koch and 

Peterson 1995). Although 3 museum specimens were collected at Jenny, String, and 

Leigh Lakes (Carpenter 1953), no verified sightings of this species have been made in 

Grand Teton National Park in nearly 40 years (Koch and Peterson 1995), thus it is 

assumed that this species is extirpated from Grand Teton National Park. 

The northern sagebrush lizard is the only lizard species known to occur in the Greater 

Yellowstone Ecosystem and, specifically, in Grand Teton National Park. Although not 

often found above 6,000 ft in the northern Rocky Mountains (Baxter and Stone 1985), it 

has been documented as high as 8,300 ft in Yellowstone and Grand Teton National Parks 

in geothermally influenced areas and as high as 7,000 ft in non-geothermal areas (Koch 

and Peterson 1995). Occurrence of sagebrush lizards in Grand Teton National Park was 

not confirmed until 1992 when an individual was observed near Pilgrim Creek (Koch 

and Peterson 1995). Three other observations are reported in Grand Teton National 

Park (2 near Bar BC Ranch and one near Colter Bay) but all 3 are unverified (NPS 2002). 

This species likely occurs only in small, localized areas. No lizards have been reported in 

the study area. 

ENVIRONMENTAL CONSEQUENCES 

Methodology 

Identification of federally listed species, migratory bird species of management concern, 

and special-concern species was accomplished through discussions with wildlife 

biologists in Grand Teton National Park and informal consultation during the scoping 

period with the Ecological Services Branch of the US Fish and Wildlife Service in 

Wyoming. A letter requesting a current list of federal threatened, endangered, and 

special concern species was sent to the US Fish and Wildlife Service. The US Fish and 

Wildlife Service responded on 12 July 2005 with scoping comments, which are 

summarized in section 1.6 of this Environmental Assessment. Wyoming Game and Fish 

Department received a copy of the scoping notice and responded on 27 July 2005 with 

comments which are also summarized on section 1.6 of this Environmental Assessment. 
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Copies of both agency response letters are provided in Appendix A. 

The following steps were used in assessing impacts on listed species and other wildlife: 

1. Determine current presence, habitat availability, and uses of areas by wildlife 

species; 

2. Identify areas most likely to be affected by management actions resulting from 

the rehabilitation of the Gros Ventre Campground; and 

3. Determine the extent and intensity of habitat loss or disturbance caused by the 

alternatives. 

Impact Threshold Definitions 

Negligible a change to a population or individuals of a species or to the species 

habitat (including designated critical habitat for T&E species) that is not 

measurable or perceptible. 

Minor a measurable, small, localized change to a population or individuals of a 

species or to the species habitat (including designated critical habitat for 

T&E species). 

Moderate a change to a population or individuals of a species or to the species 

habitat (including designated critical habitat for T&E species) that is 

measurable, localized and of consequence. 

Major a measurable, large and/or widespread change to a population or 

individuals of a species or to the species habitat (including designated 

critical habitat for T&E species). 

Effect of Alternative 1: No Action on Wildlife, Including Threatened and 

Endangered Species 

Direct/ Indirect Impacts: The No Action Alternative would maintain the campground in 

its current state, but would allow for replacement of facilities and infrastructure in-kind 

on an as needed basis. The project area would continue to provide habitat for many 

wildlife species, although the quality of the habitat would remain low due to the existing 

development and levels of human use. Human activity also results in a buffer of unused 

habitat around the developed area, the size depending on species and individual levels of 

tolerance for human activities. With no changes in vegetation and human use levels, 

wildlife use of the area would generally remain as it is currently. Utilities and 

infrastructure are currently outdated and repairs to these systems are likely to be 

necessary. Repair of infrastructure, would have adverse minor effects beyond the 

ongoing impacts provided that construction activities associated with these repairs occur 

within the current campground operation window (late May – early October) and 

remain within the existing campground footprint. Construction related activities outside 

of the established use period and existing footprint would have adverse negligible to 

minor indirect impacts to wildlife habitats beyond what currently occurs. 
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Threatened, Endangered, and Candidate Species

Gray wolf – Ongoing activities at the Gros Ventre Campground have resulted in a daily 

disturbance in the project area from late May through early October. The campground 

and associated disturbance has resulted in a loss of habitat for ungulates in the project 

area and decreased the quality of habitat in areas immediately adjacent. Ungulates are 

the primary prey of wolves. Any displacement impacts to ungulates, particularly elk that 

result from the existing campground and its use would also have minor indirect impacts 

on wolves. These impacts would continue under the No Action Alternative. The project 

area is greater than 1 mile from any known wolf den or rendezvous site. Consequently, 

any emergency repairs to utilities or infrastructure that are necessary are unlikely to 

disrupt or affect any denning activities. Any additional displacement or disturbance of 

individuals that occurs as result of emergency maintenance activities would be confined 

to the project’s immediate area and limited in temporal extent and should not have 

population level or long-term impacts on wolves, their ungulate prey or other important 

habitat elements. Therefore, this alternative “may affect, but is not likely to adversely 

affect” gray wolves. 

Yellow-billed cuckoo-Ongoing activities at the Gros Ventre campground have reduced 

the suitability of the area for Yellow-billed cuckoos, especially during their breeding and 

nesting season (May-July) when they are sensitive to disturbance. Human occupancy 

and associated activities has also decreased the quality of habitat in areas immediately 

adjacent to the project area. No additional habitat would be modified and existing 

human use would remain the same under Alternative 1, therefore this alternative would 

not have any additional effects on Yellow-billed cuckoos. Continued operation of the 

campground under existing conditions would have local, long-term, and minor effects. 

Displacement or disturbance to individuals that occurs as a result of the operation of the 

campground and any facility maintenance would be confined to the project’s immediate 

area and limited on a temporal extent and should not have population level impacts on 

cuckoos. Therefore, this alternative “may affect, but is not likely to adversely affect” 

Yellow-billed cuckoos. 

Mammals

Ungulates - The existing campground has resulted in the loss or modification of 170 acres 

of riparian and adjacent upland habitat. Under Alternative 1, there may be additional 

direct loss of habitats suitable for ungulate browsing and security if emergency repairs 

are necessary. The extent of additional habitat loss would depend on the nature of the 

repairs and their location. Any additional habitat loss is expected to be negligible to 

minor because of the small acreage likely to be affected and its occurrence in a previously 

disturbed area. Operation of the campground would continue to be seasonal. Ungulates 

could access forage and browse or secure habitats on the site during the winter and early 

spring or at other times of the year when human presence is low. The primary effect of 

the Gros Ventre campground on ungulates would continue to be habitat avoidance due 

to human disturbance. Ungulates would continue to modify their use of suitable habitats 

in the project area to avoid human disturbance. 

Carnivores

Current operation of the campground has direct and indirect adverse effects on several 

species of carnivores. During the campground’s annual operational period, within the 

developed area’s existing foot print, some habitat remains for weasels, badgers, skunks, 

raccoons, and pine marten. These species may use habitats within the developed area but 
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densities are likely reduced when compared to undisturbed habitats. Skunks and 

raccoons may experience beneficial effects through use of cavities associated with 

building foundations as wintering and denning areas. Other species, including coyote, 

bobcat, mountain lion, and black and grizzly bears are displaced from using habitats 

within the campground’s footprint because of high levels of human activity. Human 

activity also results in a buffer of unused habitat around the developed area, the size 

depending on species and individual levels of tolerance for human activities. The direct 

and indirect impacts on these carnivores associated with habitat loss are considered 

minor and long-term in the campground’s current configuration. 

Human foods occasionally attract bears to the campground. Black bears have been 

observed in the campground on a relatively low but consistent rate, and food rewards 

have occurred. However, no black bear control actions have occurred in the 

campground for at least 20 years. One black bear that was eventually destroyed by 

Wyoming Game and Fish personnel after breaking into a private residence near the 

airport was known to have frequented the Gros Ventre campground. Black bears are 

common on Blacktail Butte and they will continue to investigate the campground and 

surrounding habitats occasionally. In the south end of the park, expanding numbers of 

grizzly bears, which commonly use more open habitats like those surrounding the 

campground, would increase the chance that they will investigate the campground as 

well. Existence of the campground and associated human foods increases the probability 

for bears to receive food rewards, become food conditioned, and ultimately is destroyed 

because of threats to human safety. This adverse impact to bear populations is negligible 

and long-term currently but could increase to minor and long-term if grizzly bear density 

increases in the area. 

Special-Concern Species, Neotropical Migratory Birds, and Amphibians and 

Reptiles

The current operation of the campground has direct and indirect adverse effects on 

several special-concern species including bald eagles, sage-grouse, trumpeter swans, 

neotropical migratory birds and amphibian and reptiles. During the campground’s 

annual operational period, within the developed area’s existing foot print, some habitat 

remains for neotropical migratory birds, amphibian and reptiles, and other specialconcern species. These species may use habitats within the developed area for nesting, 

foraging or shelter but densities are likely reduced when compared to undisturbed 

habitats. Other species, such as sage-grouse, bald eagle, trumpeter swan, and raptors are 

displaced from using habitats within the campground’s footprint because of high levels 

of human activity and/or habitat alteration. Human activity associated with the 

campground also results in a buffer of unused habitat around the developed area, the 

size depending on species and individual levels of tolerance for human activities. 

The existing footprint of the campground would remain the same under Alternative 1. 

No new areas would be converted from undisturbed ground to pavement, camping sites, 

or facilities and no trees or vegetation would be removed. Without a change in 

vegetation or human activity in the project area, wildlife use would generally remain the 

same although habitat quality in the immediate area would remain relatively low due to 

the existing level of development and human presence. Selection of the No Action 

Alternative would not affect special-concern species, neotropical migratory birds, or 

amphibian and reptiles in the project vicinity, or their habitat, beyond the on-going 

impacts from visitation and human activity that have been occurring in this area for 
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many years; however these impacts are considered negligible to minor, and long-term. 

Cumulative Impacts: Cumulative impacts from activities associated with Alternative 1 are 

expected to be minor. This alternative contributes to cumulative impacts associated with 

other recent or near-future park developments, or to other sources of habitat loss, 

including private lands development and increased recreation within the ecosystem. 

Existing developments in the area including the town of Kelly, the Kelly Road, and 

private residents along the Gros Ventre River may restrict use of this habitat by riparianobligate species and as a travel corridor by others. 

Conclusion: Direct, indirect, and cumulative impacts to the wildlife resource would be 

adverse and negligible to minor as a result of implementing the No Action Alternative. It 

was also determined that Alternative 1 “may affect, but is not likely to adversely 

affect” the gray wolf and Yellow-billed cuckoo. Consistent with §1.4.7.1 of NPS

Management Policies 2006 and the unacceptable impacts analysis method described 

earlier under “Methods for Analyzing Impacts,” Alternative 1 would not result in any 

unacceptable impacts on wildlife and their habitats, including special concern, 

threatened, or endangered species in the area. The effects on wildlife resources under 

Alternative 1 would not be unacceptable because the potential adverse impacts are 

anticipated to be only negligible to minor in intensity and, thus, would not rise to the 

level where unacceptable impacts could occur. Because no unacceptable conditions 

would result, there would be no impairment of wildlife (by definition, impairment is 

worse than unacceptable impacts) 

Recommended Mitigation Measures 

To limit potential impacts to wildlife, the following mitigation measures are 

recommended under Alternative 1. 

1. Maintain Gros Ventre campground season of use from late May through early 

October. This is to ensure that migrating ungulates have access to an important 

seasonal migration corridor and associated staging areas. This would ensure 

wintering moose have access to undisturbed crucial winter range and public safety is 

maintained during the elk reduction program. To the extent practical, all activities 

associated with preparing the campground for opening and closing would occur 

within the late May – early October operation season. 

2. Conduct emergency repair activities during the campground operating season (late 

May – early October). 

3. Ensure that all administrative loop residents are thoroughly briefed on park food 

storage regulations. 

4. Conduct regular food storage compliance patrols in administrative loops. 

5. Require the contract concessioner to develop a plan for installation of food storage 

boxes in all campground sites within the next 5 years. Evaluate the need for food 

storage boxes in administrative sites. 

6. Protect owl and raptor nests located in the campground from human disturbance. 

Do not remove or disturb any migratory bird nest, egg, or parts thereof under 

requirements outlined in the Migratory Bird Treaty Act. 
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Effects of Alternative 2 – Action Alternative (Preferred) on Wildlife, 

Including Threatened and Endangered Species 

Direct/ Indirect Impacts: Alternative 2 proposes a number of upgrades and improvements 

to campground utilities and infrastructure. Project implementation would involve 

construction of new infrastructure facilities in currently undisturbed habitat, 

upgrade/replacement of existing utilities within the previously disturbed footprint, and 

removal of some existing facilities/infrastructure and restoration of these areas. 

Construction activities associated with the proposed enhancements would likely be 

moderate to intense, compared to other park activities such as hiking or camping and 

would add to the existing disturbance impacts. Implementation of the proposed action is 

expected to result in the following: 

• increase in disturbance impacts during the construction phase of the project 

(these are expected to be short-term and local in extent); 

• permanent loss of an estimated 198 trees; 

• slightly less than 170 acres of undisturbed habitats affected; 

• overall reduction in the total number of available camp sites from 385 to 308; 

• increase in the number of administrative sites from 20 to 44 and resulting partial 

shift in the intensity of campground use from predominantly short-term 

occupancy by overnight campers to season-long continuous occupation in the 

administrative loop; 

Once the campsite loops are closed and those habitats are restored the following 

beneficial effects are anticipated: 

• overall reduction in campground footprint; 

• restoration of 8 acres of habitat 

Other potential impacts on wildlife would be similar to Alternative 1. 

Threatened and Endangered Species

Gray wolf - Generally, project activities occurring more than a mile from a den or 

rendezvous site and outside of the breeding season (April - June) do no disrupt and/or 

inhibit wolf life history behavior to the point of site abandonment or mortality. The 

project area is greater than 1 mile from any known wolf den or rendezvous site. 

Individual wolves that may use areas near the project area may avoid the area due to 

human presence and mechanical noise during project implementation. Any 

displacement or disturbance of individual wolves that occurs as a result of project 

implementation would be confined to the project’s immediate area and limited in extent 

and should not have population level or long-term impacts on wolves, their ungulate 

prey or other important habitat elements. Therefore, it is in the opinion of the National 

Park Service that this alternative “may affect, but is not likely to adversely affect” gray 

wolves. 

Yellow-billed cuckoo-Alternative 2 would result in the loss of over 160 cottonwood trees 

for the development of E and F loops, over half of which are large trees between 6-12 

inches or greater in diameter at breast height . Combining this tree removal with that 

estimated for the development of the leach field and septic tank construction would 

result in the removal of approximately 198 cottonwood trees. This level of tree removal 
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is substantially greater than no trees removed in Alternative 1 and results in the direct 

loss of potential cuckoo habitat. Restoration of approximately 8.0 acres of habitat in the 

G and the Group loops would offset some of the direct habitat loss proposed in E and F 

loops and the leach field/ septic tank area; however vegetation structure in the restored 

area may not be similar to what is removed for campground improvements proposed in 

Alternative 2. Impacts from the removal of vegetation, mainly cottonwood trees, would 

have long-term, local and minor impacts to Yellow-billed cuckoos although these 

impacts would occur in areas currently degraded because of high disturbance levels from 

existing campground uses and in an area of widespread availability of cottonwood 

habitat. In order to minimize these impacts, it is recommended that fewer trees be 

removed during campsite and leach field development. Any displacement or disturbance 

of individual cuckoos that occurs as a result of project implementation would be 

confined to the project’s immediate area and limited in extent and should not have 

population level or long-term impacts on cuckoos. Therefore, it is in the opinion of the 

National Park Service that this alternative “may affect, but is not likely to adversely 

affect” Yellow-billed cuckoos. 

Mammals

Ungulates – Human development with attendant high density human use generally 

results in a decline in the effectiveness of habitat to support ungulates. In addition to the 

existing disturbance impacts described under the No Action Alternative, Alternative 2 

would result in additional loss of habitat where new facilities are constructed in 

undisturbed areas and a reduction in habitat effectiveness due to construction related 

disturbance. Summer range is widely available for all the ungulate species within the 

Jackson Hole valley and in areas adjacent to the project area. Therefore the direct loss of 

a small amount of ungulate foraging habitat is anticipated to have minor effects. The 

project area serves as an important seasonal migration corridor for bison and elk and as 

crucial winter range for moose. The limited season of use and construction window 

(summer only) would still allow ungulate migrations to occur unimpeded and would 

provide secure winter habitat for moose.

The restoration proposed for the southwest portion of the campground would result in 

more concentrated use in the remaining portion of the campground. In the long-term, 

this would be beneficial for wildlife. The overall campground footprint would be 

reduced and removed from the riparian area. As the restored areas recover they would 

become available to wildlife for foraging, traveling and resting. This gain for wildlife may 

be offset to some extent, if a shift in use patterns occurs with an increase in the number 

of administrative sites. Currently campground users are primarily short-term overnight 

visitors and the campground reaches capacity for a few nights during midsummer. 

Administrative sites are generally occupied for the duration of the summer resulting in 

overall higher occupancy levels. Use of the riparian corridor adjacent to the campground 

may increase if seasonal residents opt to recreate from their sites. This could reduce the 

effectiveness of the riparian habitats for ungulates if use levels were high. 

Carnivores

Under Alternative 2, some additional habitat would be gained through the abandonment 

of the two western-most existing loops in the campground and an overall reduction in 

the developed area foot print. This would have direct and indirect, negligible but longterm, beneficial impacts to all carnivores. 
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Experience throughout the park with administrative RV sites and visitor campgrounds 

has shown that the former generally have a higher level of compliance with food storage 

regulations. Thus the conversion of two campground loops into RV sites may decrease 

the probability that a grizzly or black bear could receive human associated food rewards. 

This logic would only apply, however, when the campground was near capacity. When 

the campground occupancy is substantially less than full capacity, the converted RV 

loops would serve to increase the average number of occupants in the developed area 

and the potential for food storage violations. Overall, impacts associated with potential 

food-conditioning of bears would not vary considerably between Alternatives 1 and 2. 

Other potential impacts on carnivores would be similar to Alternative 1. 

Special-Concern Species, Neotropical Migratory Birds, and Amphibians and 

Reptiles

Direct impacts to special-concern species such as bald eagles, sage-grouse, trumpeter 

swans, neotropical migratory birds and amphibian and reptiles as a result of 

implementation of Alternative 2 would be primarily a result of (1) noise disturbance from 

construction activity, (2) habitat removal, and (3) habitat gained through the 

abandonment of G and the Groups loops. 

Noise associated from construction activities has the potential to disturb wildlife in the 

area, but this disturbance is expected to be of low magnitude and of short-duration since 

construction noise would cease as soon as the project was complete. A direct loss of 

some individuals could occur during construction activities whereas other individuals 

will not be permanently displaced. Wildlife such as some bird, amphibian or reptiles 

species may be temporarily or permanently displaced to similar habitat in the 

surrounding area. 

Alternative 2 would result in the loss of over 160 cottonwood trees for the development 

of E and F loops, over half of which are large trees between 6-12 inches or greater in 

diameter at breast height. Combining this tree removal with that estimated for the 

development of the leach field and septic tank construction would result in the removal 

of approximately 198 cottonwood trees. This level of tree removal is substantially greater 

than no trees removed in Alternative 1. The direct loss of trees proposed in Alternative 2 

has the potential to impact populations that use and depend on cottonwood trees for 

nesting, foraging, or shelter. Some species of birds may relocate to similar habitat within 

the campground or nearby forest. For other species, the tree removal may result in the 

permanent, direct loss of habitat, a reduction of habitat security, and increased habitat 

fragmentation. Although these effects would not have population level impacts on such 

species, they may cause displacement, competition, higher predation, and lower survival 

of some individuals. Restoration of approximately 8.0 acres of habitat in the G and the 

Group loops would offset some of the direct habitat loss proposed in E and F loops and 

the leach field/ septic tank area; however vegetation structure in the restored area may 

not be similar to what is removed for campground improvements proposed in 

Alternative 2. Impacts from the removal of vegetation, mainly cottonwood trees, would 

have long-term, local and minor impacts to wildlife special-concern species and 

amphibian and reptiles although these impacts would occur in areas currently degraded 

because of high disturbance levels from existing campground uses and in an area of 

widespread availability of cottonwood habitat. In order to minimize these impacts, it is 

recommended that fewer trees be removed during campsite and leach field 

development. 
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Bird Species of Concern and Neotropical Migratory Birds 

Neotropical migratory birds are of particular interest to wildlife managers because they 

have been experiencing severe population declines throughout their North American 

range. Habitat fragmentation and loss of winter range are at least two factors believed 

responsible for these declines. Bird species of special concern may be vulnerable to 

extirpation at the global or state level due to inherent rarity, significant loss of habitat, or 

sensitivity to human-caused mortality or habitat disturbances (Fertig and Beauvais 1999). 

These factors cumulatively contribute to reduced reproductive success, increased 

mortality risks and reduced availability of secure habitat to bird species of special 

concern. Direct and indirect effects to bird species of special concern and/or neotropical 

migratory birds resulting from Alternative 2 would be greater to those described in 

Alternative 1. Direct impacts from Alternative 2 would include permanent loss of 

cottonwood trees although this loss would occur in an area with existing high human use 

and low habitat quality. Direct effects could occur to birds that nest in these habitats or 

use these habitats for foraging or cover. Indirect impacts associated with the 

development of loop E and the leach and septic fields would include noise and human 

disturbances that would be short-term and negligible to breeding, nesting, or migrating 

birds. Restoration of approximately eight acres of habitat in the G and the Group loops 

would offset some of the direct habitat loss proposed in E and F loops and the leach 

field/ septic tank area; however vegetation structure in the restored area may not be 

similar to what is removed for campground improvements proposed in Alternative 2. 

Impacts from the removal of vegetation, mainly cottonwood trees, would have longterm, local and minor to negligible impacts to neotropical migratory birds although these 

impacts would occur in areas currently degraded because of high disturbance levels from 

existing campground uses and in an area of widespread availability of cottonwood 

habitat. In order to minimize these impacts, it is recommended that fewer trees be 

removed during campsite and leach field development. 

Other potential impacts on special-concern species would be similar to Alternative 1. 

Cumulative Impacts: Cumulative impacts associated with Alternative 2 would be similar 

to Alternative 1 except that Alternative 2 would contribute to additional habitat loss, 

fragmentation and degradation from the removal of approximately 198 cottonwood 

trees. However, there would be an overall reduction of the campground footprint from 

the abandonment of the two western-most existing loops in the campground. As a result, 

cumulative impacts would be beneficial minor to some wildlife species and adverse 

minor to others. 

Conclusion: Direct, indirect, and cumulative impacts to wildlife resources would be 

adverse and negligible to adverse and beneficial minor as a result of implementing 

Alternative 2. It was also determined that Alternative 2 “may affect, but is not likely to 

adversely affect” the gray wolf and Yellow-billed cuckoo. Consistent with § 1.4.7.1 of 

NPS Management Policies 2006 and the unacceptable impacts analysis method described 

earlier under “Methods for Analyzing Impacts,” Alternative 2 would not result in any 

unacceptable impacts on wildlife and their habitats, including special concern, 

threatened, or endangered species in the area. The effects on wildlife resources under 

Alternative 2 would not be unacceptable because the potential adverse impacts are 

anticipated to be only negligible to minor in intensity and, thus, would not rise to the 

level where unacceptable impacts could occur. Because no unacceptable conditions 

would result, there would be no impairment of wildlife (by definition, impairment is 
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worse than unacceptable impacts). 

Recommend mitigation measures: 

To limit potential impacts to wildlife, the following mitigation measures are 

recommended under Alternative 2. 

1. Maintain Gros Ventre campground season of use from late May through early 

October. This is to ensure that migrating ungulates have access to an important 

seasonal migration corridor and associated staging areas, that wintering moose have 

access to undisturbed crucial winter range, and that public safety is maintained 

during the elk reduction program. To the extent practical, all activities associated 

with preparing the campground for opening and closing would occur within the late 

May – early October operation season. 

2. Conduct campground upgrade activities during the campground operating season 

(late May – early October). This is intended to allow ungulates undisturbed access to 

crucial habitats during critical timeframes (e.g. migration and winter seasons). 

3. Ensure that all administrative loop residents are thoroughly briefed on park food 

storage regulations. 

4. Conduct regular food storage compliance patrols in administrative loops. 

5. Require the contract concessioner to develop a plan for installation of food storage 

boxes in all campground sites within the next 5 years. Evaluate the need for food 

storage boxes in administrative sites. 

6. No bird nests, eggs, or parts thereof will be removed during construction activities as 

require under the Migratory Bird Treaty Act. Surveys must be conducted prior to any 

tree or other vegetation removal that is conducted between May 1 and July 31. Active 

nests located outside of this period must also be protected until young leave the nest 

or the nest fails. 

7. Protect owl and raptor nests located in the campground from human disturbance. 

8. Minimize the number of cottonwood trees and other vegetation removed for 

campsite, leach field and septic tank development. 

3.6 PARK OPERATIONS AND PARTNERSHIPS 

Park operations refer to the adequacy of staffing levels and the quality and effectiveness 

of the park infrastructure in protecting and preserving vital resources and providing for 

an effective visitor experience. Infrastructure facilities include the roads that are used to 

provide access to and within the park (both administrative and visitor use), housing for 

staff required to work and live in the park, visitor orientation facilities (visitor centers, 

developed and interpreted sites, visitor center bookstores, and other interpretative 

features), administrative buildings (office and workspace for park staff), management 

support facilities (garages, shops, storage buildings, and yards used to house and store 

maintenance equipment, tools, and materials), and utilities such as phones, sewer, water 

and electric. 
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AFFECTED ENVIRONMENT 

In 2007, Grand Teton Lodge Company (Vail & Associates) was awarded the concession 

contract for Gros Ventre Campground operations. The contract is a 15-year contract 

that includes National Park Service-required upgrades and improvements. Campground 

improvements consistent with the business prospectus for the campground’s operations 

contract include replacement of utility systems and improvements that enhance visitor 

experience and increase occupancy. Specific examples include utility hookups to 

camping sites, new shower and laundry facilities, replacement of picnic tables and fire 

rings, improved and accessible comfort stations, and an improved dump station. 

Despite being the largest of the six campgrounds in Grand Teton National Park, Gros 

Ventre Campground is the least visited. Since 2001 occupancy rates have ranged from 

21-22 percent over an entire season. The 385-site campground has many facilities spread 

out over 170 acres, which requires a considerable amount of time dedicated to daily 

operations and maintenance by park and concessions staff. Park staff is responsible for 

maintenance of the utilities infrastructure within the campground, while the 

concessioner conducts routine maintenance on comfort stations and other non-utility 

facilities. The maintenance staff spends approximately two hours a day on routine 

maintenance checking on equipment, such as lift stations and monitoring water quality. 

Among the six campgrounds in Grand Teton National Park, there are a combined total 

of 35 administrative campsites for National Park Service and partner use. The Gros 

Ventre Campground contains twenty of these sites. In 2006, the Gros Ventre 

Campground Interdisciplinary Team identified a park-wide need of over 70 additional 

full hookup administrative campsites for National Park Service and partner use. This 

number is expected to grow in the near future and does not account for a large and 

unmet need to provide RV spaces for contractors working in the park. 

ENVIRONMENTAL CONSEQUENCES 

Methodology 

Impacts to park operations focus on (1) employee and visitor health and safety, (2) ability 

to protect and preserve resources, (3) staff size (whether staffing needs to be increased or 

decreased), (4) existing and needed facilities, (5) communication (i.e., telephones, radio, 

computers, etc.), and (6) appropriate utilities (sewer, electric, water). Park staff 

knowledge was used to evaluate the impacts of each alternative and is based on the 

current description of park operations presented in the Affected Environment section of 

this document. 

Impact Threshold Definitions 

Negligible: A change in operations that is not measurable or perceptible. 

Minor: Change in an operation that is slight and localized with few measurable 

consequences. 

Moderate: Readily apparent changes to park operations with measurable 

consequences. 
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Major: A severely adverse or exceptionally beneficial change in park operations. 

Effects of Alternative 1 - No Action on Park Operations and Partnerships 

Direct/ Indirect Impacts: Under Alternative 1, operation and maintenance activities for 

existing facilities would continue unchanged, except those actions described in section 

2.2 (Elements Common to All Alternatives). Impacts would include a continuously 

increasing maintenance workload due to a lack of replacement of or substantial 

improvements to the aging existing infrastructure, comfort stations, campsites and other 

facilities. 

Maintenance staff would experience an increasing need to respond to emergency actions 

each season resulting from aging and deteriorating infrastructure. Failure of 

infrastructure systems including sewer mains, water mains, water storage and wells, RV 

dump stations, comfort stations and leach fields increases the possibility of public 

exposure to unsanitary conditions and possible temporary or even long term closure of 

the campground. 

The four comfort stations that are located in flood prone areas of the campground 

would continue to have the potential to flood as they have in previous years, postponing 

opening until the water has receded. The existing septic tank serving the dump station 

leach field would need to be pumped more often than would be required for a properly 

operating system. As a result, workloads and costs from pumping out and proper 

disposal of the waste would increase. 

Potable water quality is affected by the existing poor condition of the potable water 

system that was constructed in the late 1960s. It consists of a single well, pump house, 

1,500-gallon pressure tank and chlorination treatment system. There is no back-up well 

or pump in the system; therefore failure of the system or interruption of service would 

result in a lack of potable water and sanitary services for visitors and subsequent closure 

of the campground. 

There would continue to be a shortage of administrative campsites within Grand Teton 

National Park needed to support the park’s mission. The 35 existing administrative 

campsites would remain in the park, leaving the park short 35 or more of the 

administrative campsites needed. Insufficient employee housing in the park requires 

many seasonal employees to travel to and from a very limited number of government 

furnished housing units in the Town of Jackson, WY to perform their work. Many more 

positions are not filled at all due to a lack of housing for these employees. For example, a 

critical partner, Grand Teton Association, relies almost entirely on recreational vehicle 

users for their seasonal staffing, as it is one of the few options for housing in the area. 

This results in shortages of staff due to lack of adequate administrative sties. The 

Superintendent has identified the current housing shortage as the most critical need in 

the park. The lack of available and affordable housing for park employees is directly 

related to the housing crisis that affects Teton County as a whole. The inventory of 

available housing in Teton County, particularly in and around the Town of Jackson, is 

extremely limited and expensive. The inability of almost all park employees, regardless 

of pay grade or salary level, to afford housing in the local community or within 

reasonable (90 minute) commuting distance is a substantial impediment to successfully 
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recruiting and or retaining the large seasonal workforce required to meet the National 

Park Service mission at Grand Teton. This requires that the National Park Service and its 

partners provide housing for the vast majority of their employees. Over the last several 

years there have been numerous occasions where well qualified candidates have been 

offered key positions and have either declined offers or withdrawn from consideration 

due to inadequate housing. Construction of these administrative full hookup RV sites 

would markedly improve, but not completely solve the park’s housing crisis. Park 

operations would continue to suffer from inadequate staff required to perform 

operations and maintenance work in the Gros Ventre Campground and throughout the 

park. 

In addition, employees currently residing in the campground have inadequate shower 

and laundry facilities for proper hygiene and there is a lack of sites which serve 

employees with disabilities. 

Under Alternative 1, resultant direct and indirect impacts to park operations would be 

local, adverse, moderate and long-term. This is due, in part, to a larger issue of 

operational impacts of deferred maintenance within Grand Teton National Park. The 

total deferred maintenance of the park is estimated at $125 Million, which has a wide 

impact on park operations. No action to improve and reduce the number of the facilities 

within this campground would perpetuate this impact. 

Cumulative Impacts: Relevant recent, ongoing and reasonably foreseeable projects in the 

Park are expected to have adverse minor to moderate long-term cumulative impacts on 

park operations. The relative contribution of Alternative 1 on park operations would be 

negligible to adverse minor and long-term. Overall cumulative impacts would remain 

adverse, minor to moderate and long-term. 

Conclusion: Under Alternative 1, there would be adverse minor to moderate direct, 

indirect, and cumulative impacts to park operations. 

Effects of Alternative 2 – Action Alternative (Preferred) on Park Operations 

and Partnerships 

Rehabilitation of the facilities and infrastructure in the Gros Ventre Campground would 

enhance the park's ability to provide safe visitor facilities and services, including the 

treatment of potable water and wastewater, reduce operations and maintenance efforts 

required to manage the campground and improve the quality and efficiency of overall 

park operations. 

Abandonment of existing leach fields and construction of a new wastewater main line 

would assure sustained operation of the campground, without the additional costs of 

emergency repairs or closures due to current system failures. The wastewater 

infrastructure upgrades would eliminate current failures to the wastewater systems, 

contamination of the ground water, and the risk of employee exposure to raw sewage 

during emergency operations. 

Constructing a new potable water treatment system consisting of a well and pump house 

with pressure tank and chlorination system would eliminate latent problems in the 

existing water infrastructure. This would improve the ability to ensure the campground 

has a continuous supply of clean, potable water throughout the season for decades to 

come. 
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Elimination of two campground loops, six aging comfort stations, and a portion of 

amphitheater parking would reduce the operational and maintenance costs associated 

with operating and maintaining those facilities and the utilities that support them. Over 

the long term it would also reduce the introduction and presence of exotic vegetation 

thereby reducing the costs of exotic plant management in the campground. Eliminating 

loops G and H would result in the demolition of their four associated comfort stations, 

two of which are located in flood prone areas. Additionally the comfort stations in loop 

F would be demolished and new ones would be placed outside of flood prone areas, 

thereby reducing the costs of operating and maintaining these stations. The leaking 

wastewater lines and failing leach field that serve these stations would also be eliminated, 

which would reduce the risk of public exposure to raw sewage or the risk of raw sewage 

entering the ground water table and the Gros Ventre River. 

Adding 34 administrative RV sites in loop E and expanding the 10 current administrative 

sites to accommodate modern vehicles would provide additional sites that are safer and 

more functional for National Park Service and partner employees. New shower stations 

and laundry facilities for administrative use would also provide a safe and sanitary area 

for employees in the campground to launder their clothing and maintain proper hygiene. 

This ultimately reduces the number of employee trips to town and the costs, 

inefficiencies, carbon footprint and traffic hazards associated with these additional trips. 

Resultant direct and indirect impacts of Alternative 2 on visitor use and experience, 

including health and safety, would be adverse and minor in the short-term through 

disruptions in traffic patterns, utility services and availability of campground facilities. 

However, there would be beneficial moderate impacts in the long-term. 

Cumulative Impacts: Relevant recent, ongoing, and reasonably foreseeable projects in the 

park are expected to have adverse minor to moderate long-term cumulative impacts on 

park operations. The relative contribution of Alternative 2 on park operations would be 

beneficial, minor, and long-term; however, overall cumulative impacts would remain 

adverse, minor to moderate, and long-term. 

Conclusion: Under Alternative 2, there would be direct and indirect adverse and minor 

impacts in the short-term and beneficial, moderate impacts in the long-term. Actions 

proposed under Alternative 2 would have beneficial contributions to overall adverse, 

minor to moderate long-term cumulative impacts. 

3.7 VISITOR USE AND EXPERIENCE (INCLUDING PUBLIC 

HEALTH AND SAFETY) 

AFFECTED ENVIRONMENT 

The campground is open from the beginning of May to mid October and is the earliest 

campground in the park to open and the latest to close. The campground is in close 

proximity to several visitor destinations in the southern area of the park and to the town 

of Jackson. The campground is located five miles east of Highway 26/89/191 along the 

Gros Ventre Road. The town of Kelly is approximately two miles to the east, and 

Blacktail Butte lies to the north across the Gros Ventre/ Kelly Road. The Gros Ventre 

Campground, at less than 10 miles from Jackson, is the closest of all five campgrounds to 
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town amenities. The campground is situated adjacent to the Gros Ventre River and its 

associated canopy of cottonwood trees and diverse wildlife habitat. The convenient yet 

natural and rustic nature of the campground results in over 20,000 campers being 

attracted to the campground each year. 

Many of the current conditions of the Gros Ventre campground are directly relevant to 

visitor use and experience, including public health and safety. The campground is 

currently lacking in a diverse, safe and healthy camping experience for visitors. Comfort 

stations, amenities, and facility standards are in decline. There are no utility hookup sites 

or disability accessible sites in the campground. The current dump station configuration 

confines use to a single RV at a time and does not adequately accommodate larger, 

modern RVs. There are no electric hookup sites provided in the campground for visitor 

use. Water infrastructure upgrades are needed to ensure the campground has a 

continuous supply of clean, potable water. Further, there are leaking wastewater lines 

and a failing leach field, both of which could expose visitors to raw sewage or enable raw 

sewage to enter the ground water table and the Gros Ventre River. 

ENVIRONMENTAL CONSEQUENCES 

Methodology 

The baseline information used to assess impacts to visitor experience is as described in 

the methodology section at the beginning of this chapter and includes park staff 

knowledge of the resources and site; occupancy rate and pattern data collected by the 

National Park Service and its concessioner; visitor surveys and public scoping 

comments; review of existing literature and park studies; information provide by 

specialists within the National Park Service and other agencies; and professional 

judgment. 

Impact Threshold Definitions 

Negligible: The impact is barely detectable, and/or will affect few visitors. 

Minor: The impact is slight but detectable, and/or will affect some visitors. 

Moderate: The impact is readily apparent and/or will affect many visitors. 

Major: The impact is severely adverse or exceptionally beneficial and/or will 

affect the majority of visitors. 

Effects of Alternative 1 - No Action on Visitor Use and Experience 

Direct/ Indirect Impacts: Under Alternative 1, existing facilities and policies would remain 

in place. The 1960s infrastructure and facilities would continue to not meet the demands 

of today’s visitors in the following ways: there are no facilities compliant with the 

Architectural Barriers Act of 1968 (e.g., campsites, comfort stations) in the campground; 

there are no RV electric hookup sites; and the water and wastewater systems and dump 

station do not meet the demands of large, modern RVs. 
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The condition of comfort stations would continue to decline, remain undersized in 

terms of demand and would continue to be out of compliance with current accessibility 

standards. Existing campsites would remain below current accessibility standards and 

visitors utilizing and needing universally accessible sites would continue to have a 

degraded visitor experience due to inadequate accessibility. 

Failure of the water system or interruption of service would result in a lack of potable 

water and sanitary services for visitors and all of the associated consequences. Failure of 

wastewater infrastructure will result in exposure to raw sewage, disease transmission and 

other health and sanitary concerns. For example, the aging and degrading septic tank/ 

leach field wastewater treatment system serving the RV dump station and contact 

station, as well as other aging infrastructure throughout the campground is nearing the 

end of its lifespan. There is an increasing risk of overflows or spills that could expose 

visitors or employees to diseases from sewage contamination. Keeping the comfort 

stations located in flood prone areas is also a continual risk, for flooding and 

contamination of the Gros Ventre River aquifer. Flooding of a comfort station, could 

result in contamination and exposure to fecal coliform in the Gros Ventre River aquifer, 

potentially causing a public health risk to recreational users of the River. Untreated 

wastewater contains higher concentrations of ammonia. Inadequate treatment due to 

system failures could result in higher concentrations of ammonia in the groundwater. 

Resultant direct and indirect impacts of Alternative 1 on visitor use and experience 

would be adverse, moderate and long-term. 

Cumulative impacts: Relevant recent, ongoing, and reasonably foreseeable projects in the 

Park are expected to have beneficial moderate long-term cumulative impacts on visitor 

use and experience. Moderate benefits to visitor use and experience are primarily 

associated with parkwide transportation-related projects. The relative contribution of 

Alternative 1 on visitor use and experience would be adverse minor and long-term; 

however, overall cumulative impacts would remain beneficial, moderate long-term.

Conclusion: Under Alternative 1, continuation of existing conditions would pose adverse 

moderate and long-term direct and indirect impacts and would have a negative 

contribution to overall beneficial moderate long-term cumulative impacts on visitor use 

and experience. Consistent with § 1.4.7.1 of NPS Management Policies 2006 and the 

unacceptable impacts analysis method described earlier under “Methods for Analyzing 

Impacts,” Alternative 1 would not result in any unacceptable impacts on visitor use and 

experience. The effects on visitor use and experience under Alternative 1 would not be 

unacceptable because the potential beneficial and adverse impacts are anticipated to be 

only moderate in intensity and, thus, would not rise to the level where unacceptable 

impacts could occur. Because no unacceptable conditions would result, there would be 

no impairment of visitor use and experience (by definition, impairment is worse than 

unacceptable impacts) under this alternative.

Effects of Alternative 2 - Action Alternative (Preferred) on Visitor Use and 

Experience 

Direct/ Indirect Impacts: The rehabilitation and upgrade to the campground facilities and 

services would provide more visitor amenities and uninterrupted and safer services for 

the campground visitors. The reliability of the water and wastewater systems is largely 

unseen by visitors; however, when the system exhibits failures, it creates a tangible effect 

largely to a range of visitors. Water and wastewater system breakdowns would be greatly 
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reduced by the implementation of this project. The reconstruction of the dump station 

would increase its capacity, efficiency, and reduce waiting times for RV users staying in 

the campground. 

Campground occupancy data collected over the past 10 years indicates that on average 

there would be only 7 nights each year where the campground demand would exceed 

the sites available under this alternative. Reduction in the size of the amphitheater 

parking lot area is not expected to adversely impact visitor use of this area for parking 

RVs and trailers because a substantial portion of this space would remain for this 

purpose. Reduction in the amphitheater parking lot and restoration of underused 

campground loop would return the campground to a more natural setting while 

maintaining its function. It is expected that the amphitheater programs and parking 

would not be impacted, and audiences would still be drawn from the Gros Ventre 

campground, as well as other areas of the park and the town of Jackson. 

The relocation of comfort stations outside of the flood prone zone and construction of 

new Architectural Barriers Act of 1968 compliant comfort stations would beneficially 

impact visitor use and experience, as would the relocation and reconfiguration of group 

sites. Improvements and amenities associated with the new group sites would provide 

beneficial impacts to visitor use, and experience, as would the greater range of amenities 

(i.e. utility hook ups) proposed under Alternative 2. Electric hook ups would improve the 

visitor experience by providing a service requested by visitors and by reducing noise 

from visitor operated generators in campsites adjacent to the hookup sites. The 

replacement of above ground electric lines directly serving the campground with 

underground lines when possible would improve visitor experience by reducing the 

visual impact of the lines. 

Resultant direct and indirect impacts of Alternative 2 on visitor use and experience 

would be beneficial, moderate, and long-term. 

Cumulative impacts: Relevant recent, ongoing, and reasonably foreseeable projects in the 

Park are expected to have beneficial moderate long-term cumulative impacts on visitor 

use and experience. Moderate benefits to visitor use and experience are primarily 

associated with parkwide transportation-related projects. The relative contribution of 

Alternative 2 on visitor use and experience would be beneficial, minor, and long-term. 

Overall cumulative impacts on visitor use and experience would remain beneficial 

moderate long-term.

Conclusion: Under Alternative 2, the preferred action would pose beneficial moderate 

and long-term direct and indirect impacts and would positively contribute to overall 

beneficial moderate long-term cumulative impacts on visitor use and experience. 

Consistent with § 1.4.7.1 of NPS Management Policies 2006 and the unacceptable impacts 

analysis method described earlier under “Methods for Analyzing Impacts,” Alternative 2 

would not result in any unacceptable impacts on visitor use and experience. The effects 

on visitor use and experience under Alternative 2 would not be unacceptable because the 

potential beneficial impacts are anticipated to be only moderate in intensity and, thus, 

would not rise to the level where unacceptable impacts could occur. Because no 

unacceptable conditions would result, there would be no impairment of visitor use and 

experience. (by definition, impairment is worse than unacceptable impacts) under this 

alternative. 
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3.8 UNACCEPTABLE IMPACTS AND IMPAIRMENT 

ANALYSIS 

As previously described, unacceptable impacts are those that fall short of impairment, 

but are still not acceptable within a particular park’s environment. As defined in Section 

8.2 of NPS Management Policies 2006, unacceptable impacts are those that would: 

• Be inconsistent with a park’s purposes or values, or 

• Impede the attainment of a park’s desired future conditions for natural and 

cultural resources as identified through the park’s planning process, or 

• Create an unsafe or unhealthful environment for visitors or employees, or 

• Diminish opportunities for current or future generations to enjoy, learn about, or 

be inspired by park resources or values, or 

• Unreasonably interfere with 

• Park programs or activities, or 

• An appropriate use, or 

• The atmosphere of peace and tranquility maintained in wilderness and natural, 

historic, or commemorative locations within the park, or 

• National Park Service concessioner or contractor operations or services. 

Chapter 1 describes the park’s enabling legislation, its purpose and significance, and its 

fundamental resources and values. It also describes the National Park Service mission 

and mission goals, as well as special mandates, laws, policies, and administrative 

commitments that apply to management of the park. Taking all of these into 

consideration, neither of the alternatives evaluated in this document would result in 

unacceptable impacts (and thus would not result in impairment of park resources and 

values) for the following reasons: 

• Neither alternative is inconsistent with the park’s purposes and values. 

• Neither alternative would impede the attainment of the park’s desired future 

conditions for natural and cultural resources. 

• The analysis indicated that the alternatives would not adversely affect the health 

and safety of park visitors or employees. 

• Under both alternatives, visitors would continue to have opportunities to enjoy, 

learn about, or be inspired by park resources and values. 

As described in Chapters 1 and 3, the National Park Service threshold for considering 

whether there could be impairment of “the scenery and the natural and historic objects 

and the wild life therein” for Grand Teton National Park is based on whether “major” 

(that is, significant) effect would occur. The impact analysis identifies less than major 

impacts for all natural and cultural resource topics. For the reasons described in the 

impact analysis for that topic, neither Alternative 1 nor Alternative 2 would result in 

impairment of park resources. 
References Grand Teton National Park

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CHAPTER 4: CONSULTATION AND 

COORDINATION 

4.1 LIST OF PREPARERS 

Table 4.1 Preparers of this Gros Ventre Campground Rehabilitation Environmental 

Assessment 

EA: LIST OF PREPARERS 

Name Title/Role 

Jeff Allen Engineer, Grand Teton National Park 

Steve Cain Senior Wildlife Biologist, Grand Teton National Park 

Jennifer Carpenter Park Planner, Grand Teton National Park 

Jon Christensen Project Manager/Landscape Architect, Grand Teton National Park 

Gary Danczyk Chief of Professional Services, Grand Teton National Park 

Sarah Dewey Wildlife Biologist, Grand Teton National Park 

Kelly McCloskey Ecologist, Grand Teton National Park 

Kathy Mellander GIS Specialist, Grand Teton National Park 

Jessica Mitchell NEPA Writer/Editor, Biota Research &Consulting 

Jon Moeny Biologist, Grand Teton National Park 

Susan O'Ney Resource Biologist-Water Resources, Grand Teton National Park 

Mary Gibson Scott Superintendent, Grand Teton National Park 

Mallory Smith Chief of Business Resources, Grand Teton National Park 

Bob Wemple Civil Engineer, Contractor 

Margaret Wilson Planner, Grand Teton National Park 

Sue Wolff Wildlife Biologist, Grand Teton National Park 

4.1 AGENCIES/ TRIBES/ ORGANIZATIONS/ INDIVIDUALS 

CONTACTED 

A list of agencies, tribes, organizations and individuals contacted during the preparation of this 

document is available through the Grand Teton National Park Planning Office in Moose, 

Wyoming. 
References Grand Teton National Park

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Grand Teton National Park May 2009

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L7619(GRTE) 

CERTIFIED MAIL: Return Receipt Requested 

(TRIBE) Business Council 

 XXX, Chairman 

 P.O. Box XXX 

(LOCATION), (ZIP) 

Dear (NAME ): 

The National Park Service proposes to rehabilitate the Gros Ventre Campground located in 

Grand Teton National Park. An Environmental Assessment (EA) will be sent to you in late 

spring or early summer. With the EA, we will be inviting your comments and recommendations 

on the proposed alternatives and analysis. 

Gros Ventre Campground Rehabilitation and Restoration, includes actions such as: upgrading 

comfort stations to current accessibility standards; upgrading and/or replacement of critical 

campground infrastructure; installation of up to 50 visitor electric hook ups sites; conversion of 

one loop from visitor campsites to administrative campsites; and reducing the campground 

footprint by closing and restoring areas, thereby increasing critical wildlife habitat. The 

campground would remain a seasonal campground, closing for the winter season. 

We look forward to your participation in the GrosVentre Campground Rehabilitation planning 

process for Grand Teton National Park. We believe that your participation in this planning effort 

will result in better resources management. Should you have any questions, desire additional 

information, please contact Gary Pollock, Management Assistant, at 307-739-3428, or Jacquelin 

St.Clair, Archaeologist at 307-739-3664. 

Sincerely, 

 

Mary Gibson Scott 

Superintendent