Ridgway facility number 0590300 well site survey report

68 Pages·1991·5.2 MB·English

Groundwater Quality
Protection Program
RIDGWAY
FACILITY NUMBER 0590300
WELL SITE SURVEY
REPORT
Division of Public Water Supplies
OiS STATE ILLINOIS
NAR 2 5 1231
ILLINOIS DOCUMENTS

IEPA/PWS/91-50
GROUNDWATER QUALITY PROTECTION PROGRAM:
RIDGWAY
FACILITY NUMBER 0590300
WELL SITE SURVEY
REPORT
Prepared by:
Division of Public Water Supplies
Published by:
Illinois Environmental Protection Agency
Springfield, Illinois
March, 1991
ILLINOIS STATE LIBRARY
^ 1129 00597 6055
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^ TABLE QF CONTENTS
c. J
I. Introduction
II. Facility Description and Geologic Profile of Well Sites
III. Groundwater Sampling and Monitoring History
IV. Well Site Survey Methods and Procedures
V. Summary
VI. Technical Appendices
A. Topographic Map
B. Aerial Photographic Map
1. Ridgway Well #1 (lEPA #70410) Summary Description and Unit
Inventory
2. Ridgway Well #2 (lEPA #70411) Summary Description and Unit
Inventory
3. Ridgway Well #3 (lEPA #70412) Summary Description and Unit
Inventory
C. Facility Wells Report
D. Detailed Sampling/Monitoring Results
E. Chemical Information Sheet(s)
F. Glossary - Chemical Information Sheet(s)
G. Hazard Review Worksheets
Digitized by the Internet Archive
in 2019 with funding from
University of Illinois Urbana-Champaign
https ://arch i ve. o rg/detai Is/ridg wayf aci litynOOunse
INTRODUCTION
This report has been prepared by the Agency pursuant to Section 17.1 of the
Illinois Environmental Protection Act. The report summarizes information
about your facility and samples collected and analyzed from your welKs). The
well site survey provides an inventory of the area around the welKs) to help
increase your awareness of potential hazards to groundwater utilized by your
facility. This information and technical data will assist you in developing
and implementing local groundwater protection measures authorized by the Act.
FACILITY DESCRIPTION AND GEOLOGIC PROFILE OF MELL SITES
The Village of Ridgway obtains its water from three drift wells. Wells #1 and
#3 are the main supply wells with Well #2 primarily used to supply an
agricultural - chemical facility. The wells provide an average of 113,000
gallons per day to 542 services. See Table I for a description of each well.
The surficial geologic susceptibility rating for all three wells is A2. The
aquifer is overlain by sandy sediments with a moderate to high permeability.
Permeability is a measure of the ability of a soil or sediment to transmit
fluids. A complete description and geologic profile is found in the Facility
Wells Report (Appendix C).
__
Minimum Maximum Capacity Specific Well Well
Setback Setback (gpm) Capacity Depth Logs
(ft.) (ft.) Status (MGD) (qpm/ft.) Treatment Aquifer (ft.) Available
Well #1 400 No A 200 Aer., Chi., Sand 85
(70410) 0.288 Filt, FI., and
Sftng. Gravel
Well ni 400 No A 50 None Same 85
(70411) 0.072
Well #3 400 No A 400 Aer., Chi. Same 101
(70412) 0.576 Filt., FI..
Sftng.
A - Active
GROUNDWATER SAMPLING AND MONITORING HISTORY
Rldgway Wells #1 and #3 were sampled on July 7, 1987 as part of a Statewide
Groundwater Monitoring Program. The samples were analyzed for inorganic
chemicals (IOC) and volatile organic/aromatic compounds (VOC/VOA). The wells
were additionally sampled for synthetic organic pesticides (SOC) on July 19,
1988.
VOC/VOA analyses did not detect quantifiable levels of any organic compounds.
SOC analyses did not detect any pesticides/herbicides. IOC analyses indicate
that both wells have slightly elevated arsenic levels, ranging from 55 to 83
parts per billion. This is above the Maximum Allowable Concentration (MAC)
for arsenic, set at 50 ppb in drinking water, but below the General Use
Guideline for raw water of 1,000 ppb. More information on arsenic may be
found in Appendix E, complete analyses are in Appendix D.
WELL SITE SURVEY METHODS AND PROCEDURES
The detailed well site survey consists of an aerial photographic map and
inventory sheets (Appendix B), that relate information about potential
sources, routes, and possible problem sites to your water supply wells. The
location of potential sources, routes, possible problem sites, water wells
minimum setback zones and the 1,000 foot survey area are all displayed on the
aerial photographic map.
The first page of each survey consists of a summary description and geologic
profile for each well. The second and following pages of the survey inventory
units within and bordering a 1,000 foot radius of the wellhead. A unit is
defined as any device, mechanism, equipment, or area (exclusive of land
utilized only for agricultural production). The Agency 5-digit well number is
associated with a unit or map code, and then classified. The classification
codes relate to definitions of potential contamination sources and routes as
defined in the Illinois Groundwater Protection Act (see Groundwater Primer
pages 18-19). The distance and direction of the unit from the wellhead is
also indicated.
Survey Results and Findings
The Ridgway well site survey was conducted on November 28, 1990 by Wade Boring
from the Agency's Springfield office. The following describes the results and
findings for the Ridgway public water wells.
Ridawav Well #1 (lEPA #70410)
The survey area is mostly urban. The area is a mixture of residential and
commercial. There is one potential secondary source and six possible problem
sites within 1,500 feet of Well #1. The potential secondary source is
Tri-County Fertilizer (map code 7) 230 ft. SW. The possible problem sites are
an abandoned gas station (map code 4) 870 ft. NW, Veach Oil (map code 5) 550
ft. NNW, Wills 76 (map code 6) 470 ft. N and FS (map code 8) 450 ft. SSE,
Durham Hardwoods (map code 3) 1,050 ft. W and bulk fuel (map code 10) 1,050
ft. SE.
Ridqwav Hell #2 (lEPA #70411)
The survey area is mostly urban. The area Is a mixture of residential and
commercial. There is one potential secondary source and six possible problem
sites within 1,500 feet of Well #2. The potential secondary source is
Tri-County Fertilizer (map code 7) 220 ft. SW. The possible problem sites are
Durham Hardwoods (map code 3) 1,050 ft. W, an abandoned gas station (map code
4) 880 ft. NW, Veach Oil (map code 5) 560 ft. NNW, Wills 76 (map code 6) 480
ft. N., FS (map code 8) 440 ft. SSE and bulk fuel (map code 10) 1,040 ft. SE.
Ridqwav Well #3 (lEPA #70412)
The survey area is mostly urban. The area is a mixture of residential and
commercial. There are two potential secondary sources and four possible
problem sites within 1,500 feet of Well #3. The potential secondary sources
are Veach Oil (map code 5) 280 ft. SW and Will 76 (map code 6) 290 ft. S. The
possible problem sites are Durham Hardwoods (map code 3) 1,150 ft. WSW, an
abandoned gas station (map code 4) 700 ft. WSW, Tri-County Fertilizer (map
code 7) 980 ft. SSW and FS (map code 8) 1,200 ft. SSE.
SUMMARY
The well site survey conducted indicates that there are potential
sources/sites that could pose a hazard to groundwater utilized by the Ridgway
public water wells.
Five sites with below ground fuel storage; an abandoned gas station,
Veach Oil, Wills 76, Tri-County Fertilizer and FS.
Two sites with above ground storage of fertilizers and pesticides; FS
and Tri-County Fertilizer.
One bulk fuel storage area.
One woodworking company.
The Illinois Environmental Protection Act provides minimum protection zones
for your wells. These minimum protection zones are regulated by the lEPA.
The Act also authorizes county and municipal officials the opportunity to
provide maximum protection zones up to 1,000 feet. The responsibility for the
controls would then be assumed by local officials through adoption of a
maximum setback zone ordinance.
Maximum setback zones prohibit the siting of new potential primary sources of
groundwater contamination up to a distance of 1,000 feet from the well head.
In addition, a maximum setback zone could expand the regulatory coverage of
certain new and existing activities. These controls could be implemented upon
the adoption of proposed regulations by the Illinois Pollution Control Board.
RECOMMENDATIONS
The Agency strongly urges Ridgway to consider establishing maximum setback
zones for its wells. The Agency has prepared a "Maximum Setback Zone
Workbook" which provides detailed case studies of how to establish a maximum
setback zone. Technical assistance is available from the Agency and the
Illinois State Water Survey.