Drinking water source protection plan; Arches National Park headquarters well No. 3

106 Pages·2001·3.5 MB·English

by  Martin, L.

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WATER SOURCE
DRINKING
PROTECTION PLAN
Arches National Park
Headquarters Well No. 3
August 2001
WATER RESOURCES DIVISION
National ParkService - Departmentofthe Interior
Fort Collins - Denver- Washington
Digitized by the Internet Archive
in 2012 with funding from
LYRASIS Members and Sloan Foundation
http://archive.org/details/drinkingwatersouOOmart
WATER SOURCE
DRINKING
PROTECTION PLAN
Arches National Park
Headquarters Well No. 3
August 2001
Prepared by:
Larry Martin
National Park Service
Water Resources Division
1201 Oakridge Drive, Suite 250
Ft. Collins, CO 80525
(970)-225-3515
National Park Service - Department of the Interior
Fort Collins - Denver - Washington

1
Contents
Page
Executive Summary
Introduction 1
System Information
1
Source Information
1
Designated Person 2
Delineation Report 3
Geologic Data 3
Hydrogeology 3
Water Quality 4
Well Construction Data 5
Aquifer Data 6
Hydrogeologic Methods, Procedures, and Calculations 6
Map Showing Boundaries of the DWSP Zones 6
Protected or Unprotected Aquifer Classification 6
Inventory of Potential Contamination Sources 7
List Potential Contaminant Sources 7
Identify Hazards 8
Prioritize the Inventory 9
Potential Contamination Source Location 10
Potential Contamination Sources Plotted on Map 10
Assessment of Potential Contamination Sources 10
Management Program for Existing Potential Contamination 1
Management Program for Future Potential Contamination Sources 12
Management Program 12
Implementation Schedule 13
Resource Evaluation 13
Recordkeeping Section 13
Contingency Plan 14
Additional Information and Potential Changes 14
References 15
Appendices 16

Figures
Following
Page
1. General Location Map 1
2. Average Monthly Water Use 2
3. Geologic Map of the Southern Part of Arches National Park
showing probable recharge area for Headquarters Well No. 3 4
4. Area within Two Miles of Water Supply Well 6
5. Potential Contaminant Sources in the Headquarters Area 10
6. Land Ownership near Arches National Park 12
Tables
Page
1. General Water Quality, Headquarters Well No. 3 4
2. Radionuclide water quality, Headquarters Area Well No. 3 5
3. Hazardous Substances Associated with Each Potential Contaminant Source 8
Appendices
Well Log and Drawdown and Yield Testing
Water Quality Data

.
EXECUTIVE SUMMARY
Well No. 3 at the Headquarters Area, Arches National Park supplies water for a
transient, non-community water system. The well provides water for visitor uses at the
main park entrance, the maintenance area, and employee housing and offices. Water
from this well is trucked to the Island in the Sky area in Canyonlands National Park for
potable water use there. The water system is operated year round.
Well No. 3 is 172 feet deep and is completed in the Navajo Sandstone. Water is
obtained from fractures in the sandstone.
The optional two-mile radius was used as the area for conducting an inventory of
potential contaminant sources for developing this drinking water source protection plan.
There are few potential contaminants in the area. Most potential contaminant sources
in the area are under the direct control of the National Park Service.
The following procedures are recommended to reduce the potential for contamination of
the ground-water resource and drinking water supply at the Headquarters Area of
Arches National Park. These procedures and practices have already been
implemented by park staff.
1 Make certain that Well No. 2, the old well, is adequately capped to prevent
contaminants from entering the aquifer.
2. Continue periodic inspection of areas where paint, solvents, etc. are stored in the
maintenance area.
3. Purchase paint, solvents, etc. on an as-needed basis to reduce quantities stored on
site.
4. Provide secondary containment for all potential contaminants.