Attachment_1_-_Monitor_Well_Data.pdf

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Groundwater Sampling of Monitor Wells, Grand Teton
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140P1426Q0031
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This document contains groundwater well monitoring data and sampling schedules for environmental monitoring activities in Grand Teton National Park and surrounding areas.

Table 1 presents known well data and minimum sampling schedules for Task 1, detailing 24 wells across five leach field locations: Fire dorm (Beaver Creek), Employee Housing Entrance, Grand Teton NP Gros Ventre Campground, Lupine Meadows, and Moose Treatment Plant. For each well, the document specifies ground elevation, top-of-casing (TOC) elevation, height of casing above ground elevation, well depth (ranging from 12.3 to 117.9 feet), casing diameter (2 to 6 inches), and a standardized sampling schedule requiring spring sampling in May and fall sampling in September. Additional wells are listed for Moran Junction and Flagg Ranch locations, with most scheduled for September-only sampling. Table 2 provides Colter Bay Landfill well data for Task 2, listing seven monitoring wells with TOC elevations, well depths ranging from 30 to 85 feet, and 2-inch casing diameters. The wells at Colter Bay Landfill are identified by names cross-referenced to the GEM Report. Both tables indicate that bold-named wells correspond to names in the GEM Report, suggesting this data supports an ongoing groundwater environmental monitoring program requiring biannual or annual sampling events across multiple National Park Service facilities.

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Table 1: Known Well Data and Minimum Sampling Schedule for Task 1 Name of

Associated Leach field

Well Name Location in the Park

Ground Elevation

TOC

Elevation

HOC

above GE

Well Depth

(ft)

Casing Diameter

(in)

Spring Sampling

Fall Sampling

BC-1 6629.9 6630.92 1.02 37.3 6 May September

BC-2 6628.78 6631.16 2.38 39.3 6 May September

MW2012-3

(BC-5) 6628.96 6631.34 2.38 50 6 May September

Well BC-1

(LFSE

Corner)

6631.38 6634.52 3.14 81.2 2 May September

Well BC-2

(LFNE

Corner)

6631.98 6635.17 3.19 80.8 2 May September

Well BC-3

(LFNW

Corner)

6634.27 6637.54 3.27 85.5 2 May September

Well BC-4

(LFSW

Corner)

6632.57 6635.52 2.95 85.3 2 May September

Well MW- GV6 6574.5 6576.74 2.24 35 6 May September

Well MW- GV9 6575.4 6577.9 2.5 39.5 2 May September

GV-10 6564.25 6566.78 2.53 39.1 2 May September

Well MW- GV11 * 6559.81 6562.52 2.71 37.3 2 May September

Well MW- GV12 * 6560.99 6563.04 2.05 36.7 2 May September

Well MW-1 (LM-SE) 6765.38 6767.47 2.09 58.4 2 May September

Well MW-2 (LM-W) 6765.89 6767.6 1.71 55.8 2 May September

Well MW-3 (LM-NE) 6765.89 6767.65 1.76 49.4 2 May September

Well Monitor Well-1

6466.88 6469.67 2.79 49.5 6 May September

Well Monitor Well-2

6464.85 6467.23 2.38 43 6 May September

MV-3 6459.35 6460.57 1.22 48.2 6 May September

MV-4 40 2 May September

Fire dorm

Employee Housing (Entrance)

Beaver Creek

Lupine Meadows (west side of river and south of buildings)

Gros Ventre

Grand Teton NP Gros Ventre Campground (leach fields adjacent to RV station and on office side of entrance road)

Lupine Meadows

MooseMoose Treatment Plant (North side of Chapel Rd.)

MV-5 40 2 May September

MW-4 May September

MW-5 47.5 May September

Moran Junction MW-2 Moran 30 2 May September MW-1 81 2 May September

MW-2 75 2 May September

MW-3 70 2 May September

FR-3 6842.53 35.5 3 N/A September

FR-5 6844.83 6845.53 0.7 47 4 N/A September

FR-6 6851.67 6852.37 0.7 46.6 4 N/A September

FR-8s 6840.87 6843.73 2.86 36.4 2 N/A September

FR-9

6850.28 6852.99 2.71 41 2 N/A September

CB-1 6824.92 6825.88 0.96 33.7 2 N/A September

CB-5s 6815.36 6817.01 1.65 13.2 2 N/A September

CB-7

6815.86 6817.38 1.52 12.3 2 N/A September

SM-1 6841.79 6843.12 1.33 117.9 4 N/A September

SM-2 6894.65 6896.02 1.37 116.3 4 N/A September

SM-5

6894.72 6896.53 1.81 115.8 N/A September

Notes:

Bold Names are the names on the GEM Report.

Table 2: Colter Bay Landfill Well Data (Task 2) Name of

Associated Leach field

Well Name Location in the Park

TOC

Elevation

Well Depth (ft)

Casing Diameter

(in)

MW-1 6841.86 30 2

MW-2 6849.69 85 2

MW-3 45 2

MW-4 6841.89 35 2

MW-5 6841.47 45 2

MW-6 6845.17 40 2

MW-7 6842.52 45 2

Colter Bay

Flagg Ranch

AMK

Ranch

AMK Ranch

South Jenny Lake

Colter Bay Landfill

Colter Bay Pit

Flagg Ranch Lagoons

S. Jenny Lake

Signal Mountain

Signal Mountain Lagoons

Colter Bay Lagoons

Well Data

File details come from the government source that posted it. Updated .