&EPA
United States
Environmental Protection
Agency
Office of
Emergency and
Remedial Response
Superfund
Record of
EPA/ROD/R05-83/005
June 1983
New Brighton Site, MN
(Interim Water Treatment)
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TECHNICAL REPORT DATA
(Please read Instructions on the reverse before completing)
1. REPORT NO.
EPA/ROD/R05-83/005
2.
3. RECIPIENT'S ACCESSION NO.
4. TITLE AND SUBTITLE
SUPERFUND RECORD OF DECISION:
New Brighton Site, MN (Interim Water Treatment)
5. REPORT DATE
06/24/83
6. PERFORMING ORGANIZATION CODE
7. AUTHOR(S)
8. PERFORMING ORGANIZATION REPORT NO.
9. PERFORMING ORGANIZATION NAME AND ADDRESS
10. PROGRAM ELEMENT NO.
11. CONTRACT/GRANT NO.
12. SPONSORING AGENCY NAME AND ADDRESS
U.S. Environmental Protection Agency
401 M Street, S.W.
Washington, D.C. 20460
13. TYPE OF REPORT AND PERIOD COVERED
Final ROD Report
14. SPONSORING AGENCY CODE
800/00
15. SUPPLEMENTARY NOTES
16. ABSTRACT
The municipal drinking water wells in the City of New Brighton/Arden Hills were
found to be contaminated with volatile organic solvents in June 1981. The City
opened two new wells in 1982 to reach a lower non-contaminated water aquifer. Sine'-
discovery of the contamination, the levels of hazardous substances have increased
the remaining undeepened municipal wells. The city is presently drilling two
additional deeper wells. However, these new wells will not be available until the
end of the year. Despite water restrictions, anticipated summertime peak demands for
water will not be met without drawing water from contaminated wells.
The cost-effective initial remedial measure (IRM) selected for this site is
treatment of the New Brighton/Arden Hills wells #5 and #6 with granular activated
carbon to meet anticipated peak summertime demands. The capital cost for this IRM
is estimated to be $150,400 and O&M costs are $30,526 for four months.
Key Words: Granular Activated Carbon (GAC), Potable Water Supply, DOD, Federal
Facilities, Off-Base Contamination, Fire Protection
7.
KEY WORDS AND DOCUMENT ANALYSIS
DESCRIPTORS
b.lDENTIFIERS/OPEN ENDED TERMS
c. COSATI Field/Group
Record of Decision:
New.Brighton Site, MN (Interim Water
Treatment)
Contaminated media: gw
Key contaminants: VOCs, solvents, TCE
18. DISTRIBUTION STATEMENT
19. SECURITY CLASS (This Report)
None
21. NO. OF PAGES
24
20. SECURITY CLASS (This page/
None
22. PRICE
EPA Form 2220-1 (R«». 4-77) PREVIOUS EDITION is OBSOLETE
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ROD ISSUES ABSTRACT
Site; New Brighton/Arden Hills, Minnesota
Region; V
AA, OSWER
Briefing Datet June 24, 1983
SITE DESCRIPTION
The municipal drinking water wells in the City of New Brighton/
Arden Hills were found to be contaminated with volatile organic sol-
vents in June 1981. The City opened two new wells in 1982 to reach a
lower non-contaminated water aquifer. Since discovery of the contami-
nation, the levels of hazardous substances have increased in the re-
maining undeepened municipal wells. The city is presently drilling two
additional deeper wells. However, these new wells will not be avail-
able until the end of the year. Despite water restrictions, antici-
pated summertime peak demands for water will not be met without drawing
water from contaminated wells.
SELECTED ALTERNATIVE
The cost-effective initial remedial measure (IRM) selected for this
site is treatment of the New Brighton/Arden Hills wells #5 and #6 with
granular activated carbon to meet anticipated peak summertime demands.
The capital cost for this IRM is estimated to be $150,400 and O&M costs
are $30,526 for four months.
ISSUES AND RESOLUTIONS KEY WORDS
1. A fast-track RI/FS was conducted to assess . Granular Activated
alternatives to provide the City with pota- Carbon (GAC)
ble water to meet anticipated summertime . Potable Water
peak demands. The FS recommended a hydrau- Supply
lie connection with a neighboring commu-
nity's water system. The City objected due to
taste and odor problems with the nearby system
and requested that granular activated carbon
(GAC) be used for treating the contaminated
wells. As a result the cost estimate for car-
bon treatment was reevaluated. Based on new
information from the prospective suppliers of
the treatment system, the revised costs were
estimated to be essentially the same as a con-
nection to the nearby water system. There-
fore, the feasibility study was amended and
carbon treatment was recommended.
-1-
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New Brighton/Arden Hills, Minnesota
June 24, 1983
Continued
ISSUES AND RESOLUTIONS KEY WORDS
Fund-financed response actions are not autho- . Federal Facilities
rized for releases from Federal facilities.
The Twin Cities Army Ammunition Plant, a Fed-
eral facility, is one of several potential
sources of contamination. However, fund-
financed response actions were authorized
because it has not been determined that the
problems addressed in the IRM originate from
the Federal facility.
-2-
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JUN 24
RECORD OF DECISION
Initial Remedial Measure
SITE: New Brighton/Arden Hills Site
New Brighton, Minnesota
ANALYSIS REVIEWED:
I have reviewed the following documents describing the analysis
of cost-effectiveness of remedial alternatives at the New
Brighton/Arden Hills Site:
- Remedial Action Master Plan, New Brighton, CH2M Hill,
January 29, 1983.
- Focused Remedial Investigation/Feasibility Study,
New Brighton, CHgM Hill, May 29, 1983.
- Resolution of the City Council of New Brighton
No. 83-69, May 24, 1983.
- Staff summaries and recommendations.
DESCRIPTION OF SCHEDULED OPTION:
- Interim Water treatment system for the City of
New Brighton wells #5 and #6 for peak demand
periods for the summer using granular activated
carbon (project duration 4 months).
DECLARATIONS:
Consistent with the Comprehensive Environmental Response,
Compensation and Liability Act of 1980 (CERCLA), and the National
Contingency Plan (40 CFR Part 300), I have consulted with the
State of Minnesota prior to determining the appropriate remedial
action. I have determined that the granular activated carbon
treatment for the New Brighton Site is a feasible and cost-
effective remedial action necessary to protect public health
and the environment. I have also determined that the action
being taken is appropriate when balanced against the resources
available in the Trust Fund and the need to respond at other
sites.
Lee M.Thomas
Acting Assistant Administrator
Office of Solid Waste & Emergency Response
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ri
I UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
f WASHINGTON, D.C. 20460
June 22, 1983
OFFICE OF
GENERAL. COUNSEL.
MEMORANDUM
SUBJECT: New Brighton/Arden Hills Site
FROM: Lisa K.
Associate Generar Counsel
Solid Waste St Emergency Response
Division (LE-132S)
TO: Lee M. Thomas
Assistant Administrator for Solid Waste
and Emergency Response (WH-562A)
I concur in your decision to undertake an initial remedial
action (IRM) at the New Brighton/Arden Hills site on the follow-
ing condition: that the Agency has not determined that the
problems to be addressed by the IRM result from a release from
a Federally-owned facility.
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New Brighton/Arden Hills Site
Remedial Action
Briefing Document
Purpose of this briefing is to obtain AA approval for the initial
remedial measure recommended by the Region and the State for the
New Brighton/Arden Hills Site. A "Record of Decision" has been
prepared to document the approval.
The New Brighton/Arden Hills Site is contaminated with volatile
organic solvents found in drinking water. The plume has spread.
over approximately 18 square miles potentially contaminating
the drinking water supplies of 48,000 residents. Source(s) for
the contamination have not been positively identified.
This contamination was found in New Brighton 's municipal drinking
water wells in June 1981. The City of New Brighton deepened two
city wells in 1982 to reach a lower noncontaminated water aquifer.
Since discovery of the contamination, the levels of hazardous
substances have increased in the undeepened municipal wells.
The City of New Brighton is presently drilling two additional
deeper wells. Although this program is progressing as fast as
possible, these new wells will not be available until late this
year.
Despite water restrictions, anticipated summertime peak demands
for water will not be able to be met without drawing water from
contaminated wells. The New Brighton water system does not blend
the water as it is pumped from the municipal wells; therefore,
the contaminated ground water will not be diluted by blending
with uncontaminated water.
The City engineer of New Brighton estimates that an additional
2 million gallons per day (mgd) capacity will be required to
meet peak summer demands, although normal use should require
only an average of 1 mgd. Recognizing the need for expeditious
remedial action, EPA conducted a fast-track RI/FS to assess
available alternative actions.
CH2M Hill completed a RI/FS in May 1983,
were considered:
Three alternatives
Hydrologic connection to a
Minneapolis water reservoir
Treatment of New Lrighton
municipal wells #5 and #6
with granular activated carbon
Treatment of New Brighton
municipal wells #5 and #6
with air stripping
$185,209
$180,926
$144,865
2-3 weeks for
implementation
2-3 weeks for
implementation
6-7 weeks for
implementation
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— 2—
The costs noted above include the present worth cost of both
capital and 0 & M costs for the project life which is four (4)
months.
A public meeting was held in New Brighton, Minnesota on" May 23,
1983. Approximately 40 people attended. The State presented a
brief background .on what is known about the contamination problem.
The CH2M Hill Project Officer presented a summary of results and
the recommended initial remedial measure to those in attendance
for review and comment. The recommended alternative was connection
to the Minneapolis water supply. There was some concern among
those present regarding the pipeline connection to Minneapolis
due to perceived taste and odor problems with this water during
summer months. U.S. EPA informed the public that additional
comments could be submitted during the two-week period following
the meeting. Copies of the feasibility study were made available
to the public on May 26, 1983. The two-week public comment period
ended on June 9, 1983. The only written comment received was a
resolution from the City Council of New Brighton (See Attachment D)
The resolution requested treatment of the New Brighton wells with
granular activated carbon.
Based on consideration of public comments and review of the CH2M
Hill FS and addendum (copy attached), EPA has determined that
granular activated carbon (GAC) treatment of the municipal water
wells # 5 and # 6 is the appropriate initial remedial measure to
be implemented. The Regional Office of Drinking Water, the
Minnesota Pollution Control Agency, the Minnesota Department of
Health and the City of New Brighton concur in this decision.
The installation of GAC constitutes one part of the IRM. Private
drinking wells and the City of St. Anthony will be addressed
later in a separate Record of Decision.
This "Record of Decision" certifies that:
The selected initial remedial measure is a cost-effective
remedy for the site.
- The selected initial remedial measure will effectively
protect the public health.
Monies are available in the Fund to finance the remedy.
Presently there is no enforcement action on-going with this site.
Letters were sent to potential responsible parties on June 6,1983
notifying the parties of the recommended IRM and giving them
seven (7) days to inform U.S. EPA if they wish to perform this
IRM.
The following actions are required to move this IRM into constructi
Approve recommended IRM AA, OSWER
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-3-,
Enforcement release U.S. EPA - Region V
Notification time (7 days) to
potential responsible parties
Approve proposed cooperative agreement - Awarded June 17, 1983
Design IRM U.S. EPA - Region V
Construct IRM U.S. EPA - Region V
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Remedial Implementation Alternative Selection
New Brighton/Arden Hills Site
New Brighton, Minnesota
June 3, 1983
HISTORY
The New Brighton/Arden Hills Site is located immediately north of
Minneapolis/ St. Paul, Minnesota (See Attachment A). in June
1981, the Minnesota Pollution Control Agency (MPCA) and the
Minnesota Department of Health (MDH) found solvent contamination
of the groundwater used for drinking water in the City of New
Brighton and surrounding communities. More than 150 area wells
have been sampled by the State of Minnesota, the U.S. EPA Field
Investigation Team (FIT), and Army contractors. Fifteen volatile
organic priority pollutants were found. Although the major
contaminant is trichloroethylene (TCE), each well contaminated
by TCE is typically also contaminated with other volatile organic
chemicals. Contaminant concentrations occur at levels warranting
serious concern over potential adverse impacts upon public health.
MDH has ordered several municipal and private wells closed.
Retests, although few in number, have indicated increasing
concentrations of some contaminants. The U.S. Army is a potential
source of contamination at the site. However, the RI/FS has not
been completed and it is not possible to determine that the
problems at New Brighton result from a release from a federal
facility.
The most probable source(s) of the groundwater contamination lies
within Ramsey County, northeast of the City of New Brighton, a
suburb of the Twin Cities. The identified plume of contaminated
groundwater underlies approximately 18 square miles of Ramsey
and Hennepin Counties. Several potential sites have been identified
so that each may be the primary and/or a contributing source of
the contamination.
A draft Remedial Action Master Plan (RAMP) for this site was
prepared and submitted to U.S. EPA Region V in late 1982. On
May 2, 1983, a feasibility study for a temporary water supply
for the cities of New Brighton and St. Anthony and several
private homes on private wells was authorized by U.S. EPA
Headquarters. A preliminary site investigation by the feasibility
study contractor (CH2M Hill), MPCA, and the regional U.S. EPA
Project Officer was conducted on May 9 to 11, 1983. Discussions
with City officials and MPCA staff indicated that, of the three
study areas, New Brighton had the most immediate need for a
temporary, drinking water source to augment existing supplies
over the peak (summertime) demand period. Without temporary
augmentation in New Brighton starting in June, either: (1) severe
water pressure drops could occur in the City distribution system
due to inadequate supply, thereby creating a significant risk
in the event of a major fire, or (2) contaminated wells would
have to be pumped, thereby violating an MDH ban on their use and
exposing the population to a contaminated water source.
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-2-
Because New Brighton's need is immediate compared to the other
two study areas, the feasibility study addressed only New Brighton,
The other study areas will be addressed in later feasibility
CURRENT STATUS
Prior to June 1981, New Brighton operated eight municipal wells,
designated Wells 2 through 9. Contamination was detected in all
wells but in significantly varying degrees. In response to a
MDH order, the City embarked on a program to provide residents
with a noncontaminated water supply. Following a comprehensive
study by the City, they concluded that the best long-term solution
was to deepen existing wells into the noncontaminated Mt. Simon/
Hinckley aquifer where possible, and/or develop new wells into
this formation if necessary. Wells 8 and 9 have already been
deepened. Wells 2 and 7 have trace levels of contamination.
Wells 2, 7, 8, and 9 are currently in service and supply a total
capacity of 5.1 mgd. However, during the summer peak-use period
(June 1 to October 1), maximum daily water demands run as high
as three times the average daily rate, or 7.5 mgd. Consequently,
City engineers are projecting a summer peak period shortfall of
approximately 2.4 mgd. The construction of Wells 10 and 11,
originally planned for startup in early 1983, has been delayed
due to unforeseen drilling problems. It is believed however
that these wells will be producing by late 1983.
In discussions with New Brighton City engineers, and a review
of historical water demands, it has 'been agreed that a temporary
summertime water augmentation of approximately 2.0 mgd will
provide the .City with enough capacity to meet their peak require-
ments and that an average quantity of 1 mgd will be required.
Further, if treatment and use of an existing well source is to
be considered, the only likely candidates are Wells 5 and 6 due
to their capacity (2.2 mgd total), location, and ability to
integrate a treatment system quickly. Wei Is 5 and 6 are currently
used only for emergency standby since the contamination levels
in the wells exceed State standards.
The feasibility study and addedum published by Cl^MHill in May
1983, identified three alternatives as an initial remedial measure
for the New Brighton/Arden Hills Site as follows:
Hydrologic connection to a $185,209*
Minneapolis water reservoir
Treatment of New Brighton Municipal
Wells 15 & 6 with granular activated carbon $180,926*
Treatment of New Brighton Municipal
Wells 15 & 6 with air stripping $144,865* +
* (Present worth cost for capital and O&M costs for life of
the project - 4 months).
+ Implementation would take 6-7 weeks as compared to 2-3 weeks
for the other alternatives.
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-3-*
Each of the alternatives summarized above would provide adequate
protection of public health, welfare and the environment.
On May 23, 1983, at a public meeting in New Brighton, Minnesota
the findings 'and recommendations of the CH2M Hill report were
presented by the CH2M Hill Project Officer. MPCA, MDH, and
U.S. EPA Region V were also at the meeting. The residents in
attendance raised objections to the use of Minneapolis water due
to perceived taste and odor problems. Members of the City Council
of New Brighton also share this concern. The Minneapolis water
according to MPCA files does have trace amounts of contaminants
in it.
Following the public meeting, the feasibility study was made
available to the public for a comment period of two weeks. The
feasibility study was sent to U.S. EPA Headquarters for review
prior to release. Regional Counsel and the Regional Response
Branch also reviewed the feasibility study. The City of New
Brighton and MPCA also reviewed and commented on the feasibility
study prior to public release. Based on review of all available
data, findings, recommendations of current and past technical
studies, and public comments, the Region (in concurrence with
the Regional Office of Drinking Water Quality) recommend approval
of treating wells No. 5 and 6 using granular activated carbon.
The system would utilize 80,000 pounds of virgin activated carbon
approved for potable water service. The system would provide 13
minutes contact time at a total design flow rate of 1500 gpm.
The length of the project is 4 months. Total capital costs and
O&M costs are shown in Attachment B. Testing of the water for
water quality will be done by the City of New Brighton.
RECOMMENDED ALTERNATIVE
Section 300.68(e)(l) of the National Oil and Hazardous Substances
Contingency Plan (NCP) states that initial remedial measures
should be taken when they are determined to be feasible, cost-
effective, and necessary to limit exposure to a significant
health hazard. Based on our evaluation of the cost-effectiveness
of each of the proposed alternatives, the comments received from
the public and the City Council of New Brighton, information
from the State (MPCA and MDH) and from the Regional Office of
Drinking Water, we have determined that the IRM utilizing granular
activated carbon meets the NCP criteria.
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-4-.
PROPOSED ACTION
We request your approval of this IRM for granular activated carbon
for treatment of municipal water wells 5 and 6 in New Brighton,
Minnesota. Attachments B-D -provide additional information to
support the documentation for this decision.
TENTATIVE SCHEDULE
Advise and receive bids U.S. EPA (CI^M Hill) Completed
Design and construction of Following bid receipt,
selected IRM tabulation, and recommendation
of award
If you have any questions please call Karen Waldvogel at
(312) 886-7573.
Attachments as noted
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1
ADDENDUM NUMBER 1
TO
DRAFT FEASIBILITY STUDY
TEMPORARY WATER SUPPLY
NEW BRIGHTON, MN
MAY 27, 1983
As indicated in a footnote in Section 9, page 9-1, of the
subject Feasibility Study, it was anticipated that the acti-
vated carbon system supplier, whose equipment and costs were
used in the study, would submit a revised proposal. This
proposal was received and evaluated and is the subject of
this addendum.
The purpose of any Feasibility Study is to evaluate alterna-
tives and recommend the most cost-effective solution to the
problem consistent with sound engineering principles and
judgement. VJith this in mind, the referenced Feasibility
Study recommended that a temporary pipeline be installed
from Minneapolis' Hilltop Reservoir to New Brighton's dis-
tribution and storage system at an evaluated cost of
$1.76/1,000 gallons of water used. The activated carbon
alternative was.evaluated at §1.98/1,000 gallons (See
Table 8-1).
The carbon system supplier's revised proposal contained
several significant addition's, at no additional cost, which
had the effect of eliminating the previously applied cost
contingency of $27,200 (Table 6-1) and reducing their evalu-
ated cost to $1.72/1,000 gallons. The table below summarizes
the revised carbon system costs. Refer to Tables 6-1, 6-2 and
8-1 for previous cost figures.
TOTAL COSTS
CARBON ALTERNATIVE (REVISED)
Carbon System Lease $136,000
Power & Pipe Connections 5,000
Subtotal, Facilities 141,000
Engineering, CM 9,400
Contingency . 0_
Project Capital Estimate . 150,400
O&M Costs • 30,526
Total .Project Cost $180,926
Water Rate, $/l,000 gallons $1.72
(At 105 days and 105 MG)
•£- U
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Further, in an attempt to offset the potential risks with
the carbon system described in Sections 6 and 8 (pages 6-3,
8-1 and 8-3), the carbon system supplier has proposed to
1) provide an equipment or operational performance bond
equal to their proposal price ($136,000) at no additional
cost, and 2) provide up to an additional 80,000 Ibs of virgin
carbon if premature break through of contamina-
tion occurs before the 105 day performance period ends.
All of the above considerations, coupled with the New Brighton
water department and city council's expressed desire for an
activated carbon system over the pipeline alternative, have
necessitated a concerted and critical reevaluation of the
previous pipeline system recommendation. "At this time,
based on the available information, the most cost-effective
choice now appears to be the carbon system. Further, it is
believed that any accompanying risks with this acknowledged
novel system design can be offset by the proposed performance
bond. Consequently, the recommendation of this feasibility
study should be changed from the pipeline alternative to the
carbon alternative, subject to negotiation of contract terms
with the carbon system supplier.
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June 1, 1983
Ms. Karen Waldvogel
U.S. EPA
Region V
230 South Dearborn Street
Chicago, Illinois 60604
TEMPORARY WATER SUPPLY
CITY OF NEW BRIGHTON, MINNESOTA
Karen, enclosed is a resolution adopted by the New Brighton City
Council on May 24, 1983 requesting the U.S. Environmental
Protection Agency to provide a temporary water supply to meet
Summer water needs and stating a strong preference for the carbon
adsorption option discussed in the May 26, 1983 draft feasibility
study prepared by CH2M Hill.
Thank you for this opportunity to provide City input.
Sincerely,
/ ^
Leslie J. Proper, P.E.
Director of Public Works
mh
End osure
cc: Steve Lee, MPCA
/O,
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RESOLUTION TlO 83-69
STATE OF MINNESOTA
COUNTY OF RAMSEY
CITY OF NEW BRIGHTON
RESOLUTION -REQUESTING U.S.- ENVIRONMENTAL PROTECTION AGENCY TO
PROVIDE TEMPORARY WATER SUPPLY AND STATING PREFERENCE FOR CARBON
ADSORPTION OPTION
WHEREAS, the City of New Brighton has had several of its
water supply wells contaminated with volatile organic hydro-
carbons ; and
j: ' WHEREAS, in order to comely with a directive from the
jj Minnesota Department of Health to provide non-contaminated water
|; to its residents, the City will need a temporary water supply
to meet Summer water peak needs in 1983; and
WHEREAS, the U.S. Environmental Protection Agency has funded
a feasibility study to determine alternative methods of providing
the needed temporary water supply.
NOW THEREFORE BE IT HEREBY RESOLVED by the City Council of
the City of New Brighton that the City hereby requests that the
U.S. Environmental Protection Agency provide a temporary water
supply to meet the City's 1983 Summer water needs; and
BE IT FURTHER RESOLVED that the City strongly prefers the
carbon adsorption option outlined in the May 26, 1983 draft
feasibility study prepared by CH2M Hill.
Adopted this 24th day of
May
1983
fa /ft s?£r
X^g^<^^< "J /P*^^
Gregoj/y B.^ftarcus, Mayor
ATTEST:
fes F. Winkels, Acting City Manager ;
Margaret^A. Egan, City Clerk
(SEAL)
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P/ERA
United States
Environmental Protection
Agency
Office of
Emergency and
Remedial Response
EPA/ROD. R 05-83/006
September 1983
Superfund
Record of Decision:
New Brighton Site, MN
(Water Supply System)
Hazardous Waste Collection
Information Resource Center
US EPA Region 3
Philadelphia, PA 19107
U.S. Environmental Protection
Region III Hazardous Waste
Technical Information Center
841 Chestnut Street, -9th Floor
Collection
oT3ufce
Philadelphia PA '9t
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TECHNICAL REPORT DATA
(Please read Instructions on the reverse before completing!
1. REPORT NO.
EPA/ROD/R05-83/005
3. RECIPIENT'S ACCESSION NO.
4. TITLE AND SUBTITLE
SUPERFUND RECORD OF DECISION
New Brighton Site, MN (Water Supply System)
5. REPORT DATE
06/24/83
6. PERFORMING ORGANIZATION CODE
7. AUTHOR(S)
8. PERFORMING ORGANIZATION REPORT NO.
9. PERFORMING ORGANIZATION NAME AND ADDRESS
10. PROGRAM ELEMENT NO.
11. CONTRACT/GRANT NO.
12. SPONSORING AGENCY NAME AND ADDRESS
U.S. Environmental Protection Agency
401 M Street, S.W.
Washington, D.C. 20460
13. TYPE OF REPORT AND PERIOD COVERED
Final ROD Report
14. SPONSORING AGENCY CODE
800/00
is. SUPPLEMENTARY NOTES
16. ABSTRACT
The municipal drinking water wells in the City of New Brighton/Arden Hills
were found to be contaminated with volatile organic solvents in June 1981. The
City opened two new wells in 1982 to reach a lower non-contaminated water aquifer.
Since it was first discovered, the contamination levels have increased in the re-
maining undeepened municipal wells to approximately 70 ppb trichloroethylene (TCE)
The Minnesota Department of Health has ordered several municipal and six private
wells closed. The users of the private wells are at present being supplied with
bottled water.
The cost-effective Initial Remedial Measure (IRM) is to extend the existing
water supply system to the New Brighton and Arden Hills private well users whose
wells have been found to be contaminated with TCE and other chlorinated organics.
Capital costs for the IRM are estimated to be $217,958.
Key Words: Ambient Water Quality Criteria, Municipal Water System, Potable
Water System, Potable Water Supply, DOD, Federal Facilities, Off-
Base Contamination, Fire Protection
7.
KEY WORDS AND DOCUMENT ANALYSIS
DESCRIPTORS
b.lDENTIFIERS/OPEN ENDED TERMS
c. COSATI Field/Group
Record of Decision
New Brighton Site, MN
Contaminated media: gw
Key contaminants: volatile organic solvent
chlorinated organics (TCE)
18. DISTRIBUTION STATEMENT
19. SECURITY CLASS (This Report I
None
21. NO. OF PAGES
24
20. SECURITY CLASS (This page/
None
22. PRICE
EPA Form 2220-HR**- 4-77) PREVIOUS EDITION is OBSOLETE
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ROD ISSUES ABSTRACT
Site; New Brighton/Arden Hills, Minnesota
Region; V
AA, OSWER
Briefing Date; September 19, 1983
SITE DESCRIPTION
The municipal .drinking water wells in the City of New
Brighton/Arden Hills were found to be contaminated with volatile
organic solvents in June 1981. The City opened two new wells in 1982
to reach a lower non-contaminated water aquifer. Since it was first
discovered, the contamination levels have increased in the remaining
undeepened municipal wells to approximately 70 ppb trichloroethylene
(TCE). The Minnesota Department of Health has ordered several
municipal and six private wells closed. The users of the private wells
are at present being supplied with bottled water.
SELECTED ALTERNATIVE
The cost-effective Initial Remedial Measure (IRM) is to extend the
existing water supply system to the New Brighton and Arden Hills pri-
vate well users whose wells have been found to be contaminated with TCE
and other chlorinated organics. Capital costs for the IRM are
estimated to be $217,958.
ISSUES AND RESOLUTIONS KEY WORDS
1. The EPA agreed to extend an existing water . Ambient Water
supply system to users of private wells Quality Criteria
with TCE concentrations exceeding the . Municipal Water
Ambient Water Quality Criteria (27 ppb System
based on increased cancer risk of 10~5) . . Potable Water
It was originally recommended to provide Supply
a connection to a private water supply
system. However, affected residents felt
that a private system would be unreliable
and requested connection with the municipal
system. It was decided that the slight
increase in cost to use the municipal system
was justified because long-term operation and
maintenance would be more reliable.
-1-
-------
New Brighton/Arden Hills, Minnesota
September 19, 1983
Continued
ISSUES AND RESOLUTIONS KEY WORDS
2. The Twin Cities Army Ammunition Plant is a . DOD
potential source of contamination. . Federal Facilities
EPA, the State, and the Army have estab- . Off-Base
lished a task force to coordinate various Contamination
investigations and share data. The Army
believes it is not responsible for the
off-base contamination; the source has not
in fact been positively identified. Trust
Fund monies were used because it was not
clearly established that the contamination
originated at a Federal facility.
3. The water lines were increased by one pipe . Fire Protection
size (i.e., from 4 to 6 inches) to provide
capacity for fire protection. The increased
cost was considered an eligible fund expense.
-2-
-------
19 683
Record of Decision
Initial Remedial Measures
SITE: New Brighton/Arden Hills Site
New Brighton, Minnesota
ANALYSIS REVIEWED:
I have reviewed the following documents describing the analysis
of cost-effectiveness of remedial alternatives at the New Brighton/
Arden Hills Site:
- Remedial Action Master Plan, New Brighton, CHZM Hill,
January 29, 1983.
- Focused Remedial Investigation/Feasibility Study,
Private Well Users, New Brighton and Arden Hills, Mn.,
CH2M Hill, June 27, 1983.
- Office Memorandum, Minnesota Department of Health,
July 5, 1983
- Remedial Implementation Alternative Selection, EPA,
August, 31 1983
- Public comments and Staff summaries and recommendations.
DESCRIPTION OF SCHEDULED OPTION:
- Extend existing water supply system to the New Brighton
and Arden Hills private well users whose wells have been
found to be contaminated with trichloroethylene and
other chlorinated organics.
DECLARATIONS:
Consistent with the Comprehensive Environmental Response,
Compensation and Liability Act of 1980 (CERCLA), and the National
Contingency Plan (40 CFR Part 300), I have consulted with the
State of Minnesota prior to determining the appropriate remedial
action. I have determined that water main and service connections
for the New Brighton and Arden Hills private well users is a
necessary and timely remedial action to protect public health
and the environment, and is a feasible and cost-effective remedy.
I have also determined that the action being taken is in balance
with available resources in the Trust Fund and other program
demands.
Lee M. Thomas
Acting Assistant Administrator
-------
UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
. -• WASHINGTON. D.C. 20460
*l
I 9 1983
OFFICE OF
GENERAL COUNSEL.
MEMORANDUM
SUBJECT: Record of Decision for IRM at New Brighton,
Minn.
v. 2+»
FROM: Lisa K. Friedmary=r~
Associate General Counsel
Solid Waste and Emergency Response
Division (LE-132S)
TO: Lee M. Thomas
Assistant Administrator for Solid Waste
and Emergency Response
I concur with the above-cited action. However, as Dan
Berry noted in the September 16 meeting, we may face
substantial problems in recovering the additional costs
attributable to the decision to hook up to the city water system.
-------
Remedial Implementation Alternative Selection
New Brighton/Arden Hills, Minnesota
August 31, 1983
PURPOSE
The purpose of this briefing is to obtain AA approval for the
initial remedial measure recommended by the Region and the State
for the New Brighton/Arden Hills Site. A "Record of Decision"
has been prepared to document the approval.
BACKGROUND
The New Brighton/Arden Hills Site is located immediately north
of Minneapolis/ St. Paul, Minnesota. In June 1981 the Minnesota
Pollution Control Agency (MPCA) and the Minnesota Department of
Health (MDH) found solvent contamination of the ground water used
for drinking water in the City of New Brighton and surrounding
communities. More than 150 area wells have been sampled by the
State of Minnesota, the U.S. EPA Field Investigation Team (FIT),
and Army contractors. Fifteen volatile organic priority pollutants
were found. Although the major contaminant is trichloroethylene
(TCE), each well contaminated by TCE is typically also contaminated
with other volatile chemicals. These contaminant concentrations
occur at levels high enough to warrant serious concern over the
potential adverse impacts upon public health. In fact, MDH has
ordered several municipal and six private wells closed. Private
wells have TCE levels up to 2700 ppb which is significantly higher
than EPA's Ambient Water Quality Criteria of 27ppb (based on
increased cancer risk of 10-^). Retests although few in number,
have indicated increasing concentrations of some contaminants.
Source(s) for the contamination have not been positively identified.
However, the most probable source(s) of the ground water contamination
lies within Ramsey County, northeast in the City of New Brighton.
The identified plume of contaminated ground water underlies
approximately 18 square miles of Ramsey and Hennepin Counties.
Several potential sites have been identified that may each
be the primary and/or contributing source of the contamination.
One potential source of contamination is the Twin Cities Army
Ammunnition Plant (TCAAP). The Army has completed the first phase
of an investigation of the on-base contamination but, they believe
they are not responsible for any off base contamination. The
second phase of the Army's study is on-going to further evaluate
on-base, contamination. A task force has been established between
EPA, the State and the Army to share data and coordinate the
various investigations being conducted.
-------
RESPONSE ACTIONS TO DATE
Contamination was found in New Brighton's municipal drinking
water wells in June 1981. The City of New Brighton has deepened
two city wells in 1982 to a lower noncontaminated water aquifer.
Since discovery the contamination levels have increased in the
remaining undeepened municipal wells to approximately 70 ppb of TCE,
The City of New Brighton is presently drilling two additional
deeper wells. Although this program is progressing as fast as
possible, these new wells will not be available until late this
year.
CERCLA activities at the site are proceeding in two steps. The
first step addresses the short term problem posed by the
contaminated water supplies. EPA has conducted three limited
feasibility studies for the areas with contaminated water
supplies. The first feasibility study for the summertime water
supply for the City of New Brighton municipal wells was completed
and a Record of Decision was approved on June24, 1983. The
chosen Initial Remedial Measure (IRM) has been implemented by
EPA. This action consisted of installation of granular activated
carbon filters on two undeepened wells to treat water during the
peak summer demand.
The second feasibility study for temporary water supply for St.
Anthony, Mn. was completed on June 27, 1983. At present, St.
Anthony does not have excessive levels of contamination, but low
levels to trace levels of contaminants have been found. The
feasibility study for St. Anthony will be finalized only if
contaminants continue to increase; therefore, no IRM is being
recommended now. The third feasibility study for temporary
water supply for the private well users in New Brighton and
Arden Hills was completed in draft form for public comment on
June 27, 1983. The accompanying Record of Decision addressed the
recommendation of that study.
The second step of CERCLA activity at the site consists of an
on-going area wide remedial investigation to evaluate the extent
and source(s) of ground water contamination. At this point, EPA
does not know the source(s) of contamination. The State is
managing this project under a cooperative agreement with EPA.
The project is expected to be completed in Decemoer 1984 and
will be followed by a feasibility study.
CURRENT STATUS OF PRIVATE WELL AREA
Six private New Brighton/Arden Hills wells are contaminated with
excessive levels of volatile organic chemicals. The users of
these wells are at present being supplied with bottled water
by the Department of Defense,(DOD)(see attachment A). DOD has
not accepted responsibility for ground water contamination outside
-------
of the TCAAP. The Army intends to stop supplying bottled water
to the private wells following construction of the IRM. TCAAP
was sent a notice letter but did not respond (see Enforcement
Status).
The users of these wells have been advised by the Minnesota
Department of Health not to use their water for cooking or
drinking, and some users have been told not to use their water
for any purpose.
ALTERNATIVE EVALUATION
Eleven alternatives were considered to replace the contaminated
well water. These alternatives were evaluated by a set of weighed
criteria: health, reliability, feasibility, implementability,
permanence (meaning active governmental participation during the
life of the project), time required to implement, operation and
maintanence. This evaluation is presented in numerical terms
(see attachment B) and demonstrates that only two of the
alternatives were worth further consideration: a new pipeline
connection to an existing supply and a deep well to the
uncontaminated Mt. Simon/Hinckley aquifer with a new distribution
system. Continuation of bottled water supplies were eliminated
from further consideration since long-term costs were significantly
higher than other alternatives and the long-term use of bottled
water was not considered an acceptable remedy. The costs associated
with each of these alternatives is summarized below:
Alternatives Estimated Capital Cost
Pipeline from existing supply* S 217,958
Deeper wells $ 440,400
*Fire protection was included in this cost estimate.
On June 28, 1983 at a public meeting in St. Anthony,'Minnesota
the findings and recommendations of the CH2M Hill report were
presented. MPCA, MDH, and U.S. EPA Region V were at the meeting.
The residents in attendance raised objections to connecting the
pipeline to the Arden Manor trailer park water supply and prefered
connection to the Arden Hills municipal system. The residents
felt that since this is a private water supply system there would
be very little if any control over the quality of the water. It
was decided to use the public water system because the long-term
operation and maintenance would be more reliable. Following the
public meeting on June 28, 1983, the feasibility study was made
available to the public for a public comment period of two weeks.
Prior to release of the feasibility study a copy was sent to
U.S. EPA Headquarters, Regional Counsel, and the Regional Office
of Drinking Water Quality for review and comments. Written
-------
communications from the area residents include a request to
connect to Arden Hills water supply rather than to the Arden
Manor trailer park system plus they also ask if fire protection
could be included. There was also one letter from Briggs and
Morgan, attorneys that represent the residents involved in a
class action law suit against Honeywell and the U.S. Army asking
that the water pipeline also be extended to residences along
Round Lake, south of Highway 96. However, the MPCA feels that
these homes do not have excessive levels of contaminants at
present to warrant this action. Based on review of all available
data, findings, recommendations of current and past technical
studies, the Region and State recommends the approval of a pipeline
connection as stated in the feasibility study, with the exception
that the connection be to the City of Arden Hills or New Brighton
depending on proximity, in lieu of the the Arden Manor trailer
park water supply system.
ENFORCEMENT STATUS
Presently there is no enforcement action on-going with this site.
The potential responsible parties were notified in August 1983
of the IRM that is being recommended and were given seven (7)
days to inform U.S. EPA if they wish to perform the IRM. No
responses were received accepting responsibility for implementation
of the IRM. OWPE has determined that the potential responsible
parties will not voluntarily conduct the IRM and that CERCLA
funds can be used.
RECOMMENDED ALTERNATIVE
Section 300.68 of the National Oil and Hazardous Substances
Contingency Plan (NCP) states that the appropriate extent of
remedy shall be determined by the lead agency's selection of the
remedial action which the agency determines is cost-effective
(i.e., the lowest cost alternative that is technologically
feasible and reliable) and which effectively mitigates and
minimizes damage to and provides adequate protection of public
health, welfare, or the environment. Based on our evaluation
of the cost-effectiveness of each of the proposed alternatives,
the comments received from the public, the Regional Office of
Water Quality, and information from the State (MDH and MPCA), we
have determined that the IRM to provide an alternative water
supply by installation of a pipeline meets the NCP criteria.
The IRM selected is a pipeline connection from the City of Arden
Hills or the city of New Brighton depending on the closeness of
the pipelines to the affected residences. The Regional Office of
Drinking Water, the Minnesota Pollution Control Agency, the Minnesota
Department of Health and tne Cities of New Brighton and Arden Hills
concur in this decision. The State has agreed to provide its 10
percent cost-share through an amendment to the existing site
cooperative agreement.
-------
The Record of Decision certifies that:
The selected Initial Remedial Measure is a cost-effective
remedy for the site.
The selected Initial Remedial Measure will effectively
protect the public health and the environment.
Monies are available in the Trust Fund to finance the remedy.
Attachments C-D provide additional information to support the
documentation for this decision.
REQUIRED ACTION
The following actions are required to move the IRM into
construction:
Approve proposed remedy, and AA OSWER Sept 19, 1983
cooperative agreement amendment
- Enforcement release U.S. EPA OWPE/OEC Sept 19, 1983
Amend cooperative agreement GAD Sept 30, 1983
Design IRM MPCA Nov-Dec 1983
- Construct IRM MPCA Dec-Feb 1984
-------
DEPARTMENT OF THE ARMY '
OFFICE OF THE" ASSISTANT SECRETARY
WASHINGTON. DC 20310
18 Mav 1983
Mr. William N. Hedeman, Jr.
Director
Office of Emergency and
Remedial Response (WH-548)
U.S. Environmental Protection Agency
Washington, D.C. 20460
Dear Mr. Hedeman:
As you know, the State of Minnesota advised
six well owners in New Brighton - Arden Hills, Minnesota,
across from the southwest boundary of Twin Cities Army
Ammunition Plant, not to drink or, in some cases, bathe in
their well water. As an interim measure after consultation
with Mr. Wyer and Mr. Cohen of your office, the Army on May
9, 1983, began providing water for the six- well owners.
This interim response will allow time for EPA to conduct the
initial remedial action study and make funds available for
providing'potable water to the affected families on a more
permanent basis. This letter confirms our understanding
that, upon completion of your study on-the most effective
method of providing an alternate water supply, EPA will
promptly begin providing water. Further, we understand the
study is expected to last about two months.
We continue to support EPA's recent decision to approve
the area-wide study and encourage expeditious handling and
processing of the study and the interim remedial action^
The Army remains ready to work closely with EPA and the
State of Minnesota in resolution of this problem.
Sincerely,
^-'<:-,-A^<~
Lewis D. Walker
Deputy for Environment, Safety
and Occupational Health
OASA"(
Attachment A
-------
Points Henalning After Subtraction of Demerits
Tnble 4-3
RANKING OF AI.TEPtlATlVES
Personal
Tine
D>
o
ro
ri-
C3
Criterion:
Weighting Factor:
Alternative
1. Bottles - All Use
2. Truck Delivery
Storn.p.o - All 'Jr.e
3. Bottles - Potable Use
TrucX Delivery
Storage - Nonpotable Uee
4. In-llouse Treatment - All Use
5. Bottles - Poteble Use
In-llouse Treatment - Nonpotablc Use
6. Neighborhood Treatment - All Use
7. Bottles - Potable Use
Neighborhood Treatment - Nonpotable Use
8. Pipeline From Existing Supply
9. Deep Well
Health
5
25
21
23
22
23
23
24
25
25
Reliability
5
22
22
20
21
,20
23
22
25
24
Feasibility
5
15
25
16
22
13
25
16
25
25
Implemcntabllty
4
22
19
19
IB
IS
15
15
20
15
Permanence Rceiulred
4 3
15 25
11 IB
1 18
21 15
11 15
15 15
5 15
25 20
?.3 15
Of.M
2
22
19
19
15
13
*
15
13
25
24
Total
577
552
467
556
467'
550
461
665
615
10. Existing 1-Inch Line From Existing
Supply
Storage - All Use
11. Bottles-Potable Use
Existing 1-Inch Line From Existing
Supply
Storage - tlonpotable Use
22
24
72
16
16
16
21
11
15
15
21 590
21 505
-------
DEPARTMENT
TO:
FROM:
SUBJECT:
HEALTH
STATE OF MINNESOTA
Office Memorandum
Steven Lee
Solid & Hazardous Waste Division
Minn. Pollution Control Agency .
•-"?£>
Richard D. Clark, P.E., Supervisor's "v
Engineering Unit
Section of Water Supply & General Engineering
DATE.- July 5, 1983
PHONE: 623-5227
Feasibility Study, Temporary Water Supply, Private Well Users
New Brighton and Arden Hills
The following is a Minnesota Department of Health comment con-
cerning the above-mentioned study.
i
The Minnesota Department of Health's water supply construction
standards require that all municipal water mains be at least
6-inch diameter pipe. In addition, the Department recommends
that fire hydrants not be placed at the end of a 6-inch deadend
water main, unless hydraulic analysis can show that the pressure
in the water main will not be less than 20 psi at the maximum
fire flow demand rate. These requirements would apply to Che
option of extending an Arden Hills municipal water-main along
Highway 10 to serve the Group 2 homes and Stewarc Lumber.
If you have any questions, please contace me at 623-5227.
RDC:mrs
JUL061903
MINN. POLLUTION
CONTROL AGENCY
-------
minnesota department of health
717 s.e. delaware st. minneapolis 55440
(612) 276-S22)
February 24, 1982 KQSU \J^
KESa^qq-;
AGcNCY
Mr. Richard E. DeWitte
4651 Highway 10
Arden Hills, MN 55112
Dear Mr. DeWitte:
Your water well has been sampled by the Pollution Control
Agency and found to contain organic contaminants. The con-
centration ot" these contaminants is high enough to cause us
to be concerned about the long-term ingestion of this water.
This Department, therefore, reconnends you seek an alternate
source of water for drinking and food preparation. At this
time, we see no reason for you to discontinue the use of
your well for other purposes such as bathing, dishwashing,
etc.
'Sincerely,
David G. Gray, Chief
Section of Health Risk Assessment
DGG/nec
cc: Mr. Steve Lee
HPCA
Attachment C
-------
minnesota department of health
717 s.e. delaware st. minneapolis 55440
(612) 296-5221
February 24, 1982
Mr. Dave Yepraa
2023 Old Highway 8
New Brighton, MN 55112
Dear Mr. Yepma:
Your water well has been sampled by the Pollution Control
Agency and found to contain organic contaminants. The
concentration of these contaminants is high enough to
cause us to be concerned about the use of this water for
any purpose. This Department, therefore, recommends you
completely discontinue the use of your well.
Sincerely.
David G. Gray, Chief
Section of Health Risk Assessment
DGG/nec
CC: Steve Lee
MPCA
AOIIA! cinrv^rttinifv/ *mr*Inv«r
-------
October 27, 1982
Mr. ,.
Dea
You,
Age.,.
COIU
to u.
ThU
S On < .
tim^.
you,
etc.
\.' '*rRe Indykiowicz
, '\.**t Highway 96 .
•Ulls. MN S3 11 2
r . Indyki '~»-wi cz :
-ter well has been sampled by the P811ution Control
rvnd found to contain organic contaainants. The con-
'ion of these contaninants is high enough to cause us
concerned about the long-term ingestion of this water
' ^srtment , therefore, reconmends you seek an alternate
of water for drinking and foodppreparation. At this
ve see no reason for you to discontinue the use of
•11 for other purposes such as bathing, dishwashing,
Sincerely,
DGG/,,.
cc: M
David C. Gray, Chief
Section of Health Risk Assessnent
i-^lchael Kanner
ollution Control Agency
-------
minnesota department of health
minneapolis 55440
717 s.e. delaware sti
(612) 276-2271
February 24, 1982
Mr. Jack Lee
52 Mound Street
New Brighton, MN
Dear Mr. Lee:
55112
Your water well has been sampled by the Pollution Control
Agency and found to contain organic contaminants. The con-
centration of those contaninants is high enough to cause us
to be concerned about the long-tera ingestion of this water.
This Departaent, therefore, recocmends you seek an alternate
source of water for drinking and food preparation. At this
time, we see no reason for you to discontinue the use of
your well for other purposes such as bathing, dishwashing,
etc.
Sincerely,
' David G. Gray, Chief
Section of Health Risk Assessment
/•^
DGG/nec
cc: Steve Lee
Minnesota Pollution
Control Agency
nnnnr+tinlHr amnlovflf
-------
September 3, 1982
Mr. Jack Lee
2087 Old Highway 8
• 2
New Brighton, MN 55975
Dear Mr. Lee:
Your water well has been sanpled by the Pollution Control
Agency and found to contain organic contaminants. The
concentration of these contaminants is high enough to
cause us to be concerned about the use of this water for
any purpose. This Department, therefore, recoaniends you
completely discontinue the use of your well.
Sincerely,
David G. Gray, Chief
Section of Health Risk Assessment
DGG/nc
cc: Mr. Steve Lee
MPCA
-------
minnesota department of health
717 s.e. delaware st
(612) 276-5221
minneapolis 55440
•f :*•
March 5, 1932
.MINN POLLUTION
CONTROL AGcNCr
Mr. Clnn .Medbury
Stev.irt Lunb'jr Conpany
HijSiW;.;' 'J sn ! Highway 10
AnZca (Jills . '?N 55112
Dear Mr. Modbury:
Your water well has besn sanpled by the Pollution Control
A-i'incy r.r.d founj to cor.tain or.TUi'.ic contarinants. liio con-
centTatior. of thesij ccnta-:in;inc s ij hi^'i enougl: -a ciuj'-- u-
to b? concerned .ibout the lo.itj-cc.-n injojliori of "i»is ;/ater.
This repartmi?:!t, t!:ei'rt for ^, r ^crsr.noi'.us /cu s«;cit: un aitt-rn.;:.*
r our re o: i^at-^r for I r inking and food preparation. At this
tine, we see no reason for you to discontinue the use of
your well for other purposes such .ir. L-uchinjj, dishwashing.
etc.
Sincerely,
David C. Cray, Chief
Ssctior. 'of ilei-lth Hisk Assessment
DCG/nc
cc: ^f^. Steve Lee
MPCA
an oquol opportunity employer «fJ2~'2>
-------
i \
* STATE OF MINNcaOTA
m POLLUTION CONTROL AGENCY Office Memorandum
Roger DeRoos . ' •»«= September 25, 1931
Minnesota Department of Health
_ *
Michael Kanner,_Head
PROM Strike Force Unit . PHONE-
Regulatory Compliance Section
Solid and Hazardous Waste Division
SUSJcCV
nc.ML.iii ..i-..\ , ,w - _ ,-_
MINNESOTA POLLUTION_CONTROL AGENCY
STRIKE FORCE PROJECTS
I -,.^-t the assistance of your.staff in^val^ating^the^ean^Hs.s^s^ciated
ic chemic
in Arden
" 'lib TWin City
^ Hbsidence 132429
^132431 and 132344
132258
Baiiei> Residence 132252
^''t'M bpcSdence 132253
52 Mum.j. Avenue ^ 132343 '
Stevut V. Lumber (comnercial well) s 132240
»«" 'as, your staff to contact Steve Lee of ., ,«ff at 397-335S « the, have
quesL^,ns regarding these samples. Thank you.
MK/IL.L .
U Meyer, Chief, Regulatory Co.pl^nce Section, Solid and Hazardous
.,, JeDi!7asen,KRCegulatory Compliance Section, Solid and Hazardous
Waste Division, MPCA
-------
.SF-OOOOR-02
DEPARTMENT Health
TO
FROM
SUBJECT:
Michael Kanner, Head
Strike Force Unit
Regulatory Compliance Section
Solid and Hazardous Waste Division
David G. Gray, Chief ^^
Section of Health Risk Assessment
STATE OF MINNESO/A
Office Memorandum.
DATE-. October 21, 1981
, 296-5352
. - .SBi
Residential Wells Near the Arsenal MINN. POLLUTION
CONTROL AGENCY
This is in response to your request September 25, 1981 for an assessment of the
water quality in the residential wells near the Twin City Arsenal. Four samples
(132343, 132344, 132431, 132240) contain chlorinated organics at great enough
concentration that we would advise they not be used for drinking or food
preparation. Of course one should confirm the presence of the rraterial by a
second sampling as you have done for the DeWitte residence.
If you have any questions please give me a call.
DGG/nec
-------
__ '^sf—J}
'\J ij Minnesota Pollution Control Agency
February 9, 1982
Mr. Dave Yepma
2023 Old Highway 8
New Brighten, Minnesota 55112
Dear Mr.Yepma:
Enclosed please find the laboratory report sheet for the analysis
conducted on a water sample collected from your well. The
Minnesota Department of Healtn (MDH) Analytical Laboratory
conducted the analysis for the chemicals listed on the sheet,
basically solvent-like chemicals.
The symbol "<" means "less than." The units are parts per billion
(ppb). For example, <1.0 in the methylene chloride column means
either that the water sample contained no methylene chloride, or
that methylene chloride, if present, is at a concentration of
less than 1 ppb. The laboratory instrument cannot detect the
chemical at levels lower than this.
A number in a column means that the chemical was detected at that
concentration. The analysis showed high levels of several
contaminants. The results of the other samples I collected from
your well are not yet available, but I expect similar results.
Based on the guideline numbers and proposed standards I have
available, I have advised you to stop using this water for cooking
or drinking. The MDH will officially advise you of their
assessment of the health implications of consuming this water.
Please feel free to call me if you have any questions or' concerns
regarding this letter, the sample, or the case we are investigating
My telephone number is 512/297-3355. Thank you.
Sincerely,
C'^?C^_<
Stephen Lee . .
Regulatory Compliance Section
Solid and Hazardous Waste Division
SJL/dc
Enclosure
cc: Mr. Les Proper, City of. New Brighton
1935 Wor.l CcuMiy Fio.i.' RC. FV;- "vilifj. Minnow.:;i 55113
RC"J".T\,il O(!ifc-. li .'..l'i I'.I.:' • •>' i .'••!' -I L-t-i-- M.ifM .II hJCMc'VCf
I •!•. i' Or: • •: .'"v f •'•|.u.,-i-
-------
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BRIGGS AXD MORG
PROFESSIONAL. ASSOCIATION
ezoo FISST XATIONAI, BANK DCILDINO
PALTL. MINNESOTA saioi
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July 12, 1983
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Ms. Karen Waldvogel
Region V
United States Environmental
Protection Agency
13th Floor ' . .
230 Dearborn Street
Chicago, Illinois 60604
Re: Clean Water for Owners of Private
Wells in New Brighton/Arden Hills
Dear Ms. Waldvogel:
Enclosed with this letter is a letter from Harry and
Carol Werlein. Separate letters from other people we
represent have been mailed to you directly. These letters
are for the most part self-explanatory but we wish to sum-
marize the principal points in this letter.
With respect to our clients Harry and Carol Werlein,
they wish three minor modifications of the proposal submitted
by CH2M Hill. These modifications are as follows:
1. A connection to the Arden Hills municipal
water main rather than a connection to
the Arden Manor Trailer Park water main;
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Karen Waldvogel
12, 1983
Page Two
2. Use of a six inch .nip?.- inateac of a four
inch pipe to provide water; arvl
3. The installation of an appropriate number
of fire hydrants.
Considering the small additional cost of connecting the Werleins
to the Arden Kills municipal water main rather than the Arden
Manor, water main, we believe that this additional cost is
justified since the Werleins will have greater assurance of
uninterrupted water supply if they arc connected to a municipal
system. Dependence on a private water supply will affect the
marketability and value of their property and others similarly
situated. We have also been informed that the additional cost
of providing water through a six inch pipe instead of a four
inch pipe is nominal. Use of a six inch pipe will allow in-
stallation of hydrants and will reduce the premiums the Werleins
pay for fire insurance. The additional cost of fire hydrants
is justified in order to better protect the Werlein's home
from fire and are typically provided in residential areas on
municipal water systems.
We would also ask the Environmental Protection Agency to
consider providing water to the homes along the east shore of
Round Lake, south of- Highway 96. Our .of f ice represents several
homeowners in this area directly south of the Werleins. By
extending service to the homes to the south of Highway 95 on
Long Lake, more of the 31 contaminated private wells identified
to date by the Minnesota Department of Health and Minnesota
Pollution Control Agency will have a safe, new water supply
at relatively minimal additional cost.
Discernable levels of contamination have been found in
many of the wells of these homeowners and the situation could
become more acute. There appears to be an Arden Hills munici-
pal water line running between these homeowners and Highway 10,
and we believe that a connection to this water line. WDuld not
be unduly expensive. It also would seem to make sense to do
this work while connecting the homes north of Highway 96 to
the Arden Hills system.
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•xaren Waldvogel
12, 1983
page Three
If we can be of any further, assistance to you in this
matter, please do not hesitace to call.
Sincerely,
David C. McDonald
DCM:srk
Enclosure
cc: Stephen J. Lee
Harry and Carol Werlein
Leonard and Cheryl Grudnoske
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SHORT-ELLIOTT-HENDRICKSON, INC.
CONSULTING ENGINEERS
ST. PAUL. MINNESOTA
CHIPPEWA FALLS. WISCONSIN
July 6, 1983
RE: ARDEN HILLS, MN.
PUBLIC COMMENT DRAFT
FEASIBILITY STUDY
TEMPORARY WATER SUPPLY
PRIVATE WELL USERS
SEH FILE NO. 82011
Karen Waldvogel
Office of Super Fund
US E.P.A. Region 5
230 S. Dearborn
Chicago. 111. 50604
The Minnesota Pollution Control Agency is soliciting comments
from the City of Arden Hills on the above referenced report. The
City of Arden Hills requested we act as an agent of the City and
prepare such comments. The City of Arden Hills recognize the
water quality problems described in your report. In order to
provide a long term solution to the problem the City prefers the
installation of a water system that will serve all the needs of
Group 2, Stewart Lumber and Indykiewicz. The City believes the
long term need can best be provided by connecting the' existing
city water system with pipe sizes that meet domestic supply needs
plus fire flow protection. The comments listed in this letter
provide past history for the area, current needs of the City and
a request.
1. Arden Hills' 1967 Master Watermain Plan indicate a need
for 12" diameter and 8" diameter watermain extended
along the west side of Highway 10 between Highway 96
and Stewart Lumber Company. There is approximately
2,400 feet of 12" diameter watermain in the southerly
portion of the reach and 400 feet of- 8" diameter
watermain in the northerly portion extending to Stewart
Lumber. The watermain is sized on the basis of fire,
domestic and commerical flows and on land use.
2. The 4" and 3" diameter watermain, proposed in the EPA
report is below the minimum standards recommended for
waterworks adopted by the State of Minnesota. The
mininvim recommended pipe size is 6" in diameter. The
City should not approve installation of a system less
than 6" in diameter.
r.oi'iiiK nuiiniNC • 222 FAST time CANADA ROAD • si PAIU. MINNESOTA ssiir • PHONC (M2) -
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The water system in the Arden Manor mobil hone park is
a singly owned private system serving mobile home lots
owned and operated by the owners of Arden Manor. The
extension of the Arden Manor water system beyond the
mobile home park boundary would create a private water
system and would place the outside users at the mercy
of the owners of Arden Manor. The City should not be
placed in a position where future problems could occur"
due to a private water system being operated in the
City.
The owners of Arden Manor have not requested, or has
the City accepted operation maintenance of the interior
water system in Arden Manor. The owners of Arden Manor
did not want to pressure test the distribution system.
Therefore, it has not been determined whether or not
the Arden Manor system could withstand higher pressures
if a connection was made to the City system.
Furthermore, it was determined that the Arden Manor
system did not have sufficient supply or pressure to
provide adequate fire flow protection. The fire
department will not connect to the fire hydrants within
Arden Manor.
A temporary minimum size water system, if installed as
proposed in the EPA report, will soon be considered a
permanent system by the benefiting abutting property
owners. They will strongly oppose future improvements
if the City later needs to increase the size of the
system for fire flow protection.
Arden Hills request the EPA fund a minimum 6" system
with fire hydrants and allow Arden Hills to construct a
system in accordance with their watermain master plan.
If the EPA approves such request, the Arden Hills
Council may consider undertaking a public improvement
under Minnesota Statues 429. This improvement would
include the extension of watermain between" Highway 96
and Stewart Lumber Company west of Highway 10. Arden
Hills could finance the improvement through EPA funds
and other sources of City funds.
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7. When Arden Hills installed watermain along Highway 96 a
1" service was extended to the Indykiewicz property
line. The Indykiewicz problem could simply be resolved
by connecting his home to the 1" service at the
property line. He was assessed for the water service.
We are available to answer any questions regarding this matter.
Sincerely,
1 D. G. Christpffersen
City Engineer
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cc: City of Arden Hills
cc: Stephen Lee, KPCA
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