A04_-_SoW_New_Wells.pdf

Statement of Work:

• Construct Two New Ground Water Monitoring Wells at Moose, Grand Teton National Park (the

Park), Wyoming

Background:

The Wyoming Department of Environmental Quality (WYDEQ) requires two ground water monitoring wells be constructed for sampling according to Class V Septic System Permit 2021-053 for Facility WYS-

039-078. One well will be upgradient approximately 150’ and one will be downgradient approximately

350’.

The purpose of these monitoring wells is to allow for semi-annual sample collection of groundwater up-and down-gradient of the Moose Junction Septic System. These wells will be added to the ground water monitoring program in accordance with permit requirements. These wells will not be used for future groundwater extraction.

Scope:

Task #1: Construct Moose Septic System Monitor Well - Upgradient

The new well shall be called Moose Junction Well MV-4.

Approximate well location: 43°39'48.58"N, 110°43'2.95"W. Location subject to change.

Depth: 40 ft., Boring diameter: 6”, Casing size: 2”

Task #2: Construct Moose Septic System Monitor Well - Downgradient

The new well shall be called Moose Junction Well MV-5.

Approximate well location: 43°39'43.66"N, 110°43'3.13"W. Location subject to change.

Depth: 40 ft., Boring diameter: 6”, Casing size: 2”

Well Construction:

The contractor shall provide all equipment, labor, and material to construct two new ground water monitoring well in GRTE for the purpose of meeting WYDEQ requirements. All work shall be in compliance with WYDEQ Groundwater Pollution Control Guideline #1, Version 1.1 (attached); WYDEQ

Water Quality Chapter 26: Well Construction Standards; and WYDEQ Water Quality Chapter 27:

Underground Injection Control Program Class I and V Wells. All WYDEQ recommendations shall be implemented if practicable. A record drawing of the monitor well installation diagram with materials used as per Attachment to the Guideline #1 (MONITOR WELL INSTALLATION DIAGRAM) shall be provided to the Park at the completion of the well. The contractor shall provide proposed method, quality control, past performance and key personnel experience with similar work with bid proposal.

Notes:

1. All vehicles and equipment shall arrive at the job site in a condition free of mud, dirt, and plant material. A method such as pressure washing prior to transport will be needed to comply with this requirement. Prior to offloading of any equipment, inspection and verbal approval must be obtained from the park resource management representative.

2. All borrow material shall not be placed on adjacent existing ground without separation barriers.

Weed control will be provided by the Park. However, costs of weed control shall be anticipated by the contractor with environmentally friendly products approved by the Park, Division of

Science and Resource Management.

3. Mobilize all material and equipment and personnel. Assure proper location and construction and compliance with all state and local regulations for the new well.

4. All access, staging, and construction disturbance shall be contained to designated Limits of

Disturbance and staging area.

5. Utilize drilling rig mats to access the drill site. The Park will provide access to mats. The contractor will move the mats from storage at the RKO pit to the drill site and will return them to storage once work has been completed.

6. Provide an estimated schedule of work, a quality control plan, an accident prevention plan, and environmental plan to the government.

7. Provide daily reports of work progress.

8. Conduct safety tailgate meetings and provide the government with copies of the minutes of these meetings.

9. Conduct quality control preparatory meetings at the beginning of each different phase of work with all participants in said phase of work.

10. Review WYDEQ requirements and standards applicable with all participants in the quality control preparatory meetings.

11. Be in constant communication with the COR during construction.

12. All spoils shall be contained with a silt fence during construction and shall be cleaned and removed from the site after construction.

13. Provide the complete borehole installation information on a Borehole diagram and the complete well installation on the well installation diagram.

14. Provide proper marking ring and facility Identification number permanently at well site.

15. Demobilization shall include cleanup of the area and removal of all equipment and materials and repair of any damages which occurred during performance of the work.

16. All contaminated drill cuttings and muds must be contained and removed from the Park and properly disposed.

17. All waste generated shall be removed from the Park and properly disposed.

Limits of Disturbance:

Delivery: not limited to,

• Method of work

• Quality control plan

• Environmental plan

• Schedule

• Daily Reports of progress

• Minutes of accident prevention meetings

• Minutes of quality control meetings

• Final record of borehole and well installation

• New ground water monitoring well at Moose with visible identification

Government Furnished Property:

Drilling rig mats

Place of Performance:

Moose, Wyoming, located in Grand Teton National Park

Period of Performance:

The period of performance is 21 calendar days from the notice to proceed intended for the summer of

2023.

Attachment:

WYDEQ Groundwater Pollution Control Guideline #1, Version 1.1

Guideline #1

(Groundwater Pollution Control Program)

Recommended Procedures for the Design, Construction and Installation of

Monitoring Wells, Piezometers, Boreholes, Test Pits and Other Sub-surface Investigative Methods for Activities

Which Are Not Regulated by WDEQ

Wyoming Department of Environmental Quality (WDEQ)

Water Quality Division (WQD)

(Version 1.1; December, 1996) policies\guideline\voluntary\mwrecomd.doc/6-07-96

The protection of Wyoming's ground water quality for the use of this, and future generations is one of the Department of Environmental Quality's (WDEQ) fundamental goals. The old adage 'An ounce of prevention is worth a pound of cure' applies directly to groundwater proteetion, as evidenced by the amount of time and expense needed to restore contaminated groundwater sites, when it is possible and practicable to do so. Prevention efforts on the other hand, are relatively inexpensive to implement and can often avoid expensive cleanup later.

Improper design, construction, installation, plugging and abandonment of monitoring wells, piezometers, soil borings, test pits and similar sub-surface investigation activities may lead to groundwater quality degradation in many situations unless preventive measures are taken to protect the quality of the resource. These measures are intended to:

1 . prevent the introduction of contaminants into groundwater from the surface by sealing around the well at the surface;

2. prevent co-mingling between aquifers; and

3. ensure that the facilities are properly plugged and abandoned after they have served the purpose(s) for which they were installed.

For many sub-surface investigation activities, the Department requires that the design, construction, installation, etc. of one or more these types of facilities be approved prior to their installation. Generally these activities include: Site Investigation/Characterization at sites where there is knowledge of groundwater contamination, or reason to believe that a release has, or may threaten groundwater quality; where sub-surface information is needed to fulfill permitting requirements for new facilities; and where monitoring wells are needed to monitor the performance of permitted facilities.

There are other types of sub-surface investigation activities where approval from the

Department is not currently required. These may include geo-technical investigations for building construction; property assessments where the environmental condition of the site is poorly understood; and for general information purposes on behalf of private property owners and resource organizations, among others. For these activities, the Water Quality Division

(WOO) has developed this guidance document to provide general recommended procedures that should be, and in some instances must be followed to assist Wyoming residents in protecting their groundwater resource and tracking groundwater quality conditions.

The nearest WDEQ/WQD office (Groundwater Section) should be contacted to determine if a planned activity at a particular facility or site is one that would require Department approval prior to proceeding with sub-surface investigation activities. Regional office contacts for additional information regarding this guideline are:

Cheyenne

Lander

Sheridan

777-7781

332-2479

672-6457

I.

11.

111.

IV.

The State Engineer's Office (Groundwater Division) must be notified (777-7354) prior to installation of monitoring well(s); permits may be required.

All downhole drilling, monitoring and sampling equipment should be de-contaminated between boreholes, borings, monitoring well(s)/piezometer(s) to minimize the potential for cross-contamination.

Borehole cuttings should be screened and disposed of properly. Contaminated cuttings must be disposed of at a site approved by the WDEQ's Solid and Hazardous Waste Management Division.

The results of any observations (e.g. visual, odor, etc.) or analyses (e.g. field instruments, laboratory, etc.) conducted on soil removed from boreholes, test pits or other sub-surface investigative methods which indicate the release of a hazardous substance or oil (as defined in Water Quality Rules and Regulations, Chapter IV 1 should be, and in some instances must be reported to WDEQ. Contact the nearest Water Quality Division office (see preceding page) for reporting requirements.

The results of any observations (e.g. visual, odor, etc.) or analyses (e.g. field.

instruments, laboratory, etc.) conducted on surface water or groundwater removed from monitoring wells/piezometers, boreholes, test pits or other. sub-surface investigative methods which indicate the release of a hazardous substance or oil (as defined in Water Quality Rules and Regulations, Chapter IV) must be reported to WDEO. Contact the nearest Water Quality Division office (see precedTng page) for applicable reporting requirements.

V. Measures should be taken during the design, construction and installation of monitoring wells, piezometers, boreholes, test pits, cone penetrometer holes etc. to prevent co mingling between aquifers and to prevent contaminants from entering the annulus of the well. WDEQ/WQD recommends that you utilize standards within Sections 64 - 69 of Part G of Chapter XI of WDEQ/WQD rules and regulations when the well(s)/piezometer(s) are constructed, installed and developed:

A.

B.

The borehole diameter should be at least four (4) inches larger in diameter than the casing diameter.

When PVC casing is used, the casing should be installed using threaded joints, couplings, or mechanical connectors without the use of solvents or glues to hold the casing sections together.

Chapter IV also contains a description of the requirements for reporting and responding to a release. of oil or a hazardous substance; copies can be obtained free of charge by contacting the

Wyoming Department of Environmental Quality, Water Quality Division.