Unrteo States
            Environmental Protection
            Agency
            umce ot
            Emergency and
            Remedial Response
EPA/ROD/R05-84/029
August 1984
SEPA
Superfund
Record of Decision:
      New Brighton/St. Anthony, MN (IBM)

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           TECHNICAL REPORT DATA      
          (Pleale read Imtructionl on the revene before completing)   
1. REPORT NO.        12.       3, RECIPIENT'S ACCESSION NO.
 EPA/ROD/ROS-84/029               
 TITLE AND SUBTITLE             5. REPORT DATE  
 SUPERFUND RECORD OF DECISION       August 2, 1984
 New Brighton/St. Anthony, MN (IRH)      6. PERFORMING ORGANIZATION CODE
7. AUTHOR!SI               8. PERFORMING ORGANIZATION REPORT NO.
9. PERFORMING ORGANIZATION NAME AND ADDRESS      10. PROGRAM ELEMENT NO.
 Same as Box 12                  
                 11. CONTRACT/GRANT NO.
12. SPONSORING AGENCY NAME AND ADDRESS       13. TYPE OF REPORT AND PERIOD COVEREO
 U.S. Environmental Protection Agency      Final ROD Report
 401 M Street, S.W.           1.. SPONSORING AGENCY CODE
 Washington, D.C. 20460        800/00   
16. SUPPLEMENTARY NOTES                
16. ABSTRACT                    
  The New Brighton/Arden Hills site is located immediately north of Minneapolis/
 St. Paul, Minnesota. The "site" actually includes portions of the municipalities 'of
 Shoreview, Arden Hills, Moundsview, New Brighton and St. Anthony. The site presently
 consists of more than 18 square miles of ground water contaminated with volatile
 organics. In June 1981, the Minnesota Pollution Control Agency (MPCA) and the
 Minnesota Department of Health (MDH) found organic solvent contamination in ground
 water used for municipal drinking water in the City of New Brighton, which lies
 immediately to the northeast of St. Anthony and Minneapolis. The original June 1981
 sampling showed no contamination in the St. Anthony wells; but by late 1981,
 unquantifiab1e traces of trichloroethylene (TCE) contamination began to appear in
 city well number 3. From 1982 to 1984, TCE levels in well number 3 gradually rose
 to the 8-10 ppb range with a peak level of 23 ppb. In addition, dichloroethylene
 (DCE) levels gradually rose to levels averaging approximat1ey 1 ppb, with a peak of
 1. 7 ppb.                    
  U.s. EPA installed granular activated carbon filters on two undeepened wells to
 meet the peak summertime demand and an existing public water supply system was ex-
 tended to affected private well users as approved in IRMs dated 6/24/83 and 9/19/83.
 This initial remedial measure will consist of a temporary connection to an existing
   -             -   
17.          KEY WORDS AND DOCUMENT ANALYSIS      
t.     DESC'UPTORS     b.IDENTIFIERS/OPEN ENDED TERMS C. COSAT! Field/Group
 Record of Decision      ..          
 New Brighton/St. Anthony, MN (IRM)           
 contaminated Media; gw             
 Key contaminants: 1,1-dichloroethane,          
 1,1-dichloroethylene, Trans-l,2-Dichloro-         
 ethylene, 1, 1, I-trichloroethane,            
 1,1,2-trichloroethylene             
'.. DISTRIBUTION STATEMENT       19. SECURITY CLASS IT"il Report) 21. NO. OF PAGES
              None        12
              20. SECURITY CLASS (T"iS PQgel 22. PRICE
I              None        
!'A ,..'" 2220-1 (Re.. 4-77)
P"I:VIOUS EDITION II 08101..I:TI:

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TITLE AND SUBTITLE
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ution.
e.
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I.
PeRFORMING ORGANIZATION NAME AND ADDRESS
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Include ZIP code.
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14. SPONSORING AGkNCV CODE
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11. SUPPLEMENTARV NOTES
Enter information not included elsewhere but useful, such liS:
To be published in, Supersedes, Supplements, etc,

11. AllSTRACT
Include a brief (200 wonh or I,,,) faclual summary of the mosl sillnitiellnl infurmalion ..unlaine,111I III,' "'1'0". II III,' "'1''''1 ""1110111" a
sipificant bibliography or literature survey, mention it here.
Prepllred in .:uopc:raliun wllh. Irall,lall"lI ..I. l're"'III,',1 al ,'"11''''''''''' "I'.
17. KEV WORDS AND DOCUMENT ANAL VSIS
(a) DESCRIPTORS, Select from the Thesauru5 of t:ngin\ocrir.1! and Sdelltilk Term, Ihc prupc:r aUlhuri,,'III,'rm, Ihal icJcnlify Ih,' majur
co~ept of the research and are sufficiently 5peCllic and preci5c 10 be U5\:cJ as IncJcJt enUies fur \;lIlaluj:tna:.

(b) IDENTIFIERS AND OPEN.ENDED TERMS. Use identiflen for projccl ni&nl~'. cude Rllme" ~4u'pm~nl cJe"a:n"lur" ~I.:. Usc "I~n'
ended terms written in descriplor form for those subjects for which no dcS\'riplur c"isb.
(e:) COSA TII.n:LD GROUP, Held and poup assipmenu .re to be t;aken !'rom the' 116S ('OS" 11 Suhi~'~'1 ('al~'I!"ry Us!. SinL'I.' the: mg,
jorit)' of documents are multidisciplinary in nature. the Primary I'ield/(;roup assignmenll" will be ,,,,'.il.., lIi"'lpline, an'a of humiln
endeavor, or type of physical object. The applicationCs) will be cro55.referen.:ccJ wilh .e,'uncJary I id,I/( ;rlllll' a "Ij! I1IlIe II Is Ihal ",'ill 1'111111'"
the primary posting(s).

18. DISTRIBUTION STATEMENT
Denote releasabilit)' 10 Ihe public or limitalion for reason5 olhcr than scl:urily fur cKilmrlc "Ke"'iI'': 1.'111111111"11," "Ile illI!! iI~ilil;lllIhl)' III
the public. with address ;and price. '
'1,.20. SECURITY CLASSIFICATION
DO NOT submil classified reports to Ihe Nallonill Tel:hnici&llnformilliun scrvil:c.
21. NUMBER OF PAGES
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22. PRICE
Insert the price set by the National fechnicallnrorm:llion Servll:c ur Ihe Goycrnmenll'rinltng OlTil:e, If knuwn.
E PA '81'" 2220-1 (Rew. ~-77) (R...,..I

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SUPERFUND RECORD OF DECISION
New Brighton/St. Anthony, MN (IRM)
Abstract
(continued)
public water supply system to replace the contaminated municipal system.
~
Total
capital cost for this initial remedial measure is estimated to be $142,090.

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UdTj;"~L
RECORO OF DECISION
~EMEUI~L ALTERNATIVE SELECTIO~
Site: New Urighton/Arden Hills, Rdmsey Count}, Minnesotd (City 0f St.
,;nthuny)
Documents Reviewed:
I have reviewed the following documents describiny th~ dnalysis of the cost-
effectiveness of initial rel:1edial dction alternatives for the 1jew 13r'ighton/
Arden Hills, Minnesota (City of St. Anthony) -

Focused Feasibility Study, Alternative Screening Temporary ~ater Supply,
St. Anthony, Minnesota, June 27, 1983
Short-Elliott-Hendrickson, Inc. regarding St. Anthony, Minnesota, Water
Supply from Roseville, Minnesota, March 27,1984
City of St. Anthony Council Minutes, June 28, 1984
Letter to St. Anthony from the Minnesota Department of Health, 1983
Public comments and recommendations
June 19, 1984 letter from St. Anthony to MPCA stating bids for constructi~n
of the interconnection were higher than estimated
Responsiveness summary
Description of Selected Remedy:

Provide alternative service for the City's municipal well that was
found to have elevated volatile organic contaminants
- Provide noncontaminated water to an area servicing approximately 400
residential customers and a 35-acre commercial area
- Provide a 12" interconnection with the City of Roseville, Minnesota in
the vicinity of County Road C and State Trunk Highway 88 and between
the corporate limits of 5t. Anthony and Rosevi11e, Minnesota

- Provide for adequate storage capacity of the water to meet peak demands
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 determined that providing a temporary inter-
connection to the City of Roseville is a cost-effective initial remedial
measure and provides adequate protection of public health, welfare, and

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2
the environment. The StJte of Minnesota has been consulted and agrees
wit~ the approved remedy. In addition, the action will require future
operation and maintenance activities to ensure the continued effectiveness
of the remedy.
I have also determined that the action has been ~pproved for fundin~ from
the Hazardous Substance Response Trust Fund.

The U.S. EPA is continuing its remedidl investigation study of the New
~righton/Arden Hills, Minnesota, site to evaluate potential sources of
contamination. and the hydraulic characteristics of the aquifer in order
to evaluate potential remedial actions. If additional remedial actions
are determined to be a necessary, a Record of Decision will be prepared
for approval of the future remedial action. .
,~ /'tf
Date'
Il-L-,k ~)
Valdas V. Adamkus
Regional Administrator

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r U r' r d t i v t!
Su',r1Jry
/
Site LOCdtion dnd Oes(ri~tion
The tlew l>rightonjArden Hills SUf)erfur~J :Iatlondl Prlorities List site is
locdt~d imll1ediatelj north of I~innedpolis/St. Paul, r~innesota. This "site"
actually includes portions of the municipalities of Shor~vie'~, Arden Hills,
Mounjsview, New Brighton, dnd St. Anthony, ~inncsotd. A por:ion uf the
City of Fridley may also b~ in'01~ed.
The City of St. Anthony consis~s of approximately 8,000 residents according
to 1980 census figures. The City is virtual1j 100% developed dnd no major
developments affecting the tJoplJldtion or housin~ trends is anticipated. The
area is primarily residentidl with some s~dll industridl businesses.
The City of St. Anthony obtains th~ir water supply from three municipal
water wells (Well flumbers 3,4, and 5). This groundwater is distributed
to the City of St. Anthony without softening. The distribution system
consi~ts of 6". 10" and 12" water mains, two storage units, and a filtration
pldnt. The stocage units include a 250,OO)-9allon elevated tank which
pressurizes the distribution system and a 2-million gallon ground storage
reservoir. tlater is pumped froin the wells to the ground storage reservoir
and then to the elevated storage dnd distribution system. The discharge
from Wells Nos. 3 and 4 are mixed before entering the City water mains (see
map showing well locations).

H"istory
In June 1981. the Minnesota Pollution Control Agency (MPCA) and the
Minnesota Department of Health (MDH) found organic solvent contamination
in the groundwater used for municipal drinking water in the City of New
Brighton. Minnesota. which lies immediately to the northeast of St. Anthony.
Minnesota. and Minneapolis. Minnesota~ This site presently consists of
more than approximately 18 square miles of groundwater conta~inated with
volatile organic contaminants. In 1983. the MPCA and the U.S. EPA entered
. into a State-lead cooperative agreement to conduct a two-phase remedial
investigation (RI) of this site to determine the extent of the contamination
and to determine the source(s) of the contamination. The cooperative agreement
also included a focused feasibility study (FFS) to evaluate alternative
water supplies in three areas of the site while the long-term RI is underway.
These areas are:
1. New Brighton Wells Numb~rs 5 and 6
2. Private Wells in the Arden Hills area
3. St. Anthony ~ells

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,~{ " ,..1 2
" "j , I
i'1 i932 Jft:;r'tlle'MJ1~ .L~\. ~d the Sit} 0f 'Iew L>ri~htJn to .,id'dn dlt~rndtive
noncontdmil1dt.:1 ~d~'~r SJ;J,Jlj, t'h_' (itj d..:~tJencd tt'/O'llJnici;Jdl wells. An
em ~ r g e n C j r ';' I~ J est. S J j 1[11 t :. t.: .1 L.J '.J.'~. ~ rJ /'\ .. . I ':. d c: 11 1 e L ~ i n c e d i s c ° v e r y, the
contamination levels have incf<:Js..:J :n t.n..: Y'l:.,ldinin:J 'JndeetJened municipal
wells. The City of ~e~ Grighton ~Jj J!~0 jri11e1 t~J new ddjjtional deeper
wells. Although this tJrogJ"dla pr.Jyrt:ssed JS fJst as iJJ':.si)le, these new
...:Wells were not aVdilable until tht;' fall of 1983. 7hruu::Jh an Initial Remedial
Medsure (IRM), the U.S. EPA hdd instdlld :,jrdl1ulJr activated cdr~on filters
on two unde~pened well s to me~t the peJr, der:1dnJs uf the SUI~i;lert ime.
: .
I' .
Several private wells in the New ~ri~hton/Arden Hills drea were contdminated
with excessive levels of volatile or(~anic cO'71pounds. Since :nost of these
private wells were located in very c1os~ proximity to the southwest corner
.".of the Twin Cities Army Ammunition Plant (TCAAP), d potentially responsible
:par..ty.~ .;,th:e':;Oe;p:a)r~tme.ttt
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. .
3
I
Severdl 5tudies and ir1'ie~tlg.j:iJr15 Ildve been conducted or dre underwdY in
t ht: ured:
The MPCA, in close coordindti(Jll wit1 t1e U.S. EPA, is investigating pot~.!ntidl
sources of the contamination, dnd hds tentJtivelj identified the Twin Cities
';rr:1j Anmunition Plant (TeAAP) , Honeywell (a leasee on the TU\,\P property),
Jnd ~utcher's Spur as possible sources of the volatile hydrocarbons.
The Departnent of Defense (000), in conjunction with Honeywell are doin3 a study
on the TCAAP base. Recent Remedial Investiyation studies done by the 000 and
Honeywell, Inc., on the TCAAP base have shown thdt there is d HE problem at
~wo Honeywell leased buildings and from disposal areas and pits on the TLAAP
~dse. Also, TeE may be slowly 1 eaching from these disposal pits into lower
geological units. Pressure testing by DOo of several sewer lines coming
from the TCAAP property and extending several miles into New ~righton shows
that there are leaks in these sewer lines. These sewer lines are force.
mains. In addition, the 000 has a present plan to clean on-base sewer lines
which includes removing hazardous sludges from them.
Shallow monitoring wells around ~utcher's Spur show high levels of contaminants
(TCE, xylene, etc.). Further investigation of this site's impact on the'
areawide prob-1emis underway, although the investigation by the involved
compan~es is not deemed adequate at this time by the MPCA or by the U.S. EPA.
The U.S. EPA Field Investigation Team, in close cooperation with the MPCA,
identified and sampled approximately 150 private wells in the New Brighton!
Arden Hi11s/Shoreview area for volatile organic analysis as a preliminary
study to the RI.

The U.S. EPA Field Investigation Team has conducted an areawide search
of the area reviewing 400-plus companies in an attempt to identify other
potentially responsible companies as a preliminary study to the RI. The
MPCA is still reviewing the draft of this report.
The New Brighton/Arden Hills Site, Minnesota, was listed as a National
Priorities List in Group 1 on July 1982 listing with a MITRE score
of 59.16.
The U.S. Geological Survey (USGS) conducted a seismic survey to attempt
to determine the location of buried bedrock valleys, since it is believed
that the bedrock valleys would influence contamination flow routes.

The U.S. EPA, in conjunction with the State of Minnesota, is presently
involved in a two-phased remedial investigation in order to determine
the extent of the contamination plume and to identify the source(s)
of the contamination.
The MUH has conducted, with the MPCA and the City of St. Anthony, a joint
testing program of the affected municipal wells.

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4
Current Site Status
Five volatile organic che~icJls (VOL's) have beenconsist~ntly found in the
well field of St. Anthony. These urganics dre suspected carcinogens. The
City of St. Anthony and the MDH have been i:JonitJring these wells since 1981..
Increasing trends can be seen during this time period. Two wells have been
sa~p1ed at the tap: the Fir~ Station and the Public Works ~uildin9. These
faciliti~s are located at the north and south areas of the town. The highest
levels of l,l-OC£ found at th~ well head of well Number 3 is 1.7 ppb, and
the highest level of l,l-OCE found at the tap is 0.5 ppb. Table 1 lists the
contaminants and associated health risks levels.
On February 29, 1984, the MOH, through its jurisdiction over public water
supplies, advised the City of St. Anthony to discontinue use of Well Number
3. This was because of unacceptable and rising levels of contaminants. It
is suspected that, due to the construction of Well Number 3, the past analytical
results, and the apparent affect of Well Humber 3 on Wells Numbers 4 and 5,
~ell Number 3 should no longer be used. Groundwater flow toward Well Number
3 may jeopardize Well Number 4 by drawing more contaminants toward Well
Number 4.
Wells Numbers 4 and 5 have shown a very low or nondetectable level of
contamination as of February 29, 1984.

The City of St. Anthony's water production capacity has been cut by approx-
imate1yone-third. Well Number 3 has a capacity to pump 1.66-mil1ion gallons
p~r day, but usually has an average volume of 1 million gallons per day.
Water conservation measures will be implemented by the City in order to
conserve water. It is believed by city staff that such conservation measures
will not provide sufficient relief to make up for the loss of Well Number 3,
and that ~dditiona1 water supplies will be necessciry. This is especially
true in the event of failure of standby Well Number 5 and during the hot
summer months. The following is a table of water records (1974 through
1983) showing average and maximum water usage for the City of St. Anthony's
total water needs: .
Time Increment
Average*
Maximum*
Yearly
Monthly
Da i1 y
424
35
1.2
505 (1976)
90 (July, 1976)
3 . 3 (Ju n e 9, 1 97 6 )
* in millions of gallons
To date, all the municipal wells both in r~ew Brighton and St. Anthony that
have shown high levels of contaminants have been Prairie-du-Chien wells or'

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   5  
   TAHLE I 
   LontJ~iJ1Jnt ('har~(teristics 
C.ontaminant Hiyhest Observed Long-term Cdncer Risk
of ConcentrJtion (ugfl ) Health (ugfl)
Concern At Well At Ta p Advisory 10-6
1 ,1 -     
Dichloroethane 0.6  0.2  
(1 , 1 - [)C A ) (Well 3)   
1 ,1 -     
Dich1oroethy1ene 1.7  0.5  0.033
(1 , 1 - DC E ) (Well 3)   
Trans-l,2-   less than  
Dich1oroethy1ene 0.85 0.2  
(1,I-D('E-trans) (We 11 5)   
1,1,1-     
Trichloroethane 4.9  2.7  
(1,1,1- TCA) (well 3)   
1,1 ,2-     
Trichloroethylene 23  13 75 2.7
(l,l.2-TCE) (Well 3)   
.,

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.' .
6
Prairie-du-Chien/Jorda.T'1 ~J~l1s. 7ht: PrJirie-du-C-hien/Jurddn dqlJifl~r suppl ies
. 75~ of the groundwat€r ;JUtilpt:d In the Twin Citi~s metr0~ol itdn dred. The
, ,,' ~)..p'r:dA,~r-1j,e-;d~-C.h--i'eln'., ,:fOfim-a t Il'01J, !'I,..5" :d.o~,,:i}j'l4,t'€; ';0 f::,'I:1,A ,'i}h ,;,~~rr;':\:~;Qt:ni <,l,':i;t:y;,"d..'12 :.;.>'t::.J' ',',f'1C';rct.U'r'(;' S .
.' ' 'jOl:nt.:).. :and': !S,O"';ut~:on.\Gdl wells thdt dr~ in the J-Jrddn aquifer
do not s.h:Jw high levels of contdminatiun. !1owever, the Prairie-du-C.hien dnd
the Jordan are bel ieved to be connected in sO:i1e dreas. St. ;'ntl10nj o;>erdte5
3 wells:
Well Number
De p t h (f e e t )
. Aq u i fer
'3*
.:'~'3~9
4
541
, ';":P-ra'i"ri1j'e''''d'u'~:he'1"f1'\ifd'o'q'om'i'te }.-
Jordan (sandstone)

Jordan (sandstone)
5
472
Jorddn (sandstone)
* ~ell ~umber 3 presently shows contamination with TCE and OlE.
, "
. ,!';~TG"~'Ppr.-tn(iima1t.:e~'Y"'''a:s;se'S's,.'(:the'';''€'utlf'!oT:':a'tiiion. t i/.:po:s;s'"tbJ,.,':DDtf.o:v;a1n '!'(io'n5\tr>f:c;t;1'Orl!:!tQm'p'any ." ,:,and
"'''Dep'a r'tment.d"f"'Dele'ns'e. "'The "'P{)'IY"ha's . -a 'gree'd ''to "'do'''a'non::i'ba's"e''''S1:u'dy 'ift''T'C',a:A P .
bu t has refused, to date, to go offbase for any R I stud i es except to test
their various sewer lines that extend beyond the base for about 5 or 6 miles.
I
I -
The State enforcement activities have inc1uded requests to the Army. Honeywell.
3-M. and Butcher's Spur parties for information re1ated to disposal activities.
In addition, requests .for response action (RFRA) have been issued by the MPCA
board to the Amy, Federa1 Cartridge Corporation. and Honeywell t whom the MPtA
, "':I'be1!1':eY;es';):t.o'{jbel3'po.unt,j'])];~).1':\1"e:s:p0'n'S'ijj\b';1>e' ,;;!pa\r:1;';jes..' " "~\'M'PLiA,:,,~'t'a!f,f "'iba\y,e'\ai's,Q "i~requ'e's':t'ed
. "t1lcft'""th'e "'BO'tcher"'s "Spur" pa Ji'ti es", nve's'ti' g'a't'e '°"t1'1e'solve'nt"c'o'n'tamtna'tto'n "i'tlen't'ffted

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7
on ti1eir jJruperty Wit'IJut r::1o;:JSi:..;f liJbilitj. In the near furture, infonnation
requests will be s~nt to JdjjtionJl potentidllj responsible parties, both on
Jnd off base. RFRA's will be Issj~1 in the future as appropriate.
Alternatives Evaluation
Accordin3 to C.ity ,of St. Anthony sfficials, Well Number 3 had been drilled
and cased to approximately 300 feet and then blasted to provide an opening
for the water to be obtained fro~ the ground. Therefore, this well has a
mix of Prairie du Chien/Jordan water. However, Wells Humbers 4 and 5 have
been cased to approximately 450 feet dnd were not blasted. Wells Numbers
4 and 5 are prim3rily obtaining their water from the Jordan aquifer. It
is presently thought by the Uty of St. Anthonj that continued pumping of
Well Uumber 3 will 'eventually pull contaminants toward Wells Numbers 4 and
5. which presently have very low to nondetected contaminants in them.

During the initial phase of the feasibility studies, remedial options were
screened. Seveo alternatives were considered. Table 2 summarizes these
options and presents the results of screening of these alternatives based
on: 1) ability to protect human health; 2} time required for implementation;
3) relative cost; 4} complexity of alternative; 5} environmental impact of
the alternative; and 6} community impact. After screening, four alternatives
were recommended for further consideration. and these were:
1) Temporary tie-in to the City of Roseville - Preliminary calculations
indicate that the City of Roseville could easily supply St. Anthony
at average regional flow rates without a booster pump. The City of
Rosevi11e obtains their water from the City of St. Paul at $0.54/1,000
gallons.

2) Temporary tie-in to the City of C.olumbia Heights - The City of Columbia
Heights has indicated that they could supply water to the City of St.
Anthony on a temporary basis. The City of Columbia Heights obtains
their water from the City of Minneapolis at $1.26/1,000 gallons.
3) Air Stripping of the present well in use - This could be done by either
diffused aerators bubbling air through the water or by aerating towers
which the water cascades down. However, air stripping will not always
remove completely all the contaminants of concern and heating will be
required during the winter months.
4) Granular Activated Carbon (GAC) of the ~resent well in use - Adsorption
units operated in series that allows each adsorption vessel to remain
on-line until the activated carbon reaches- its capacity, after which
it must be replaced. However, the operation and maintenance (0 & M)
are very high (over $lOO,OOO/year).

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    8    
  Ability to Time Requi red Rel at he    
  Protect Public to to s t s  Envi romnentd 1 (.omm. I{e 5 u 1 t (j f
Alternative Health Implement ( *No O&M 1 nc.) Complexity Impac t Impac t ~(reen i ng
00 Uothi ng Poor Immediate None None High Hi~h Eliminated
Water (.onserva- Moderate Immed ia te None low High Moderdte ElimindtecJ
tion       to 
       High 
       (Sedsonal) 
Deeper Existing Good 6-12 months $100,200* High low Moderate Eli In i n ,J t \.' (1
Wells       
Develop New Good 10-15 months $294,200* High Low High E1 ill1l1,Jt,:IJ
Wells       
Tempora ry Good 2-3 months $142,090 Moderate low low lun...id~.,'
Tie-in to       rurtl1t:r
tHy of       
Roseville       
Ter,lpordry Modera te 2-3 months $330,600 Moderate Low Moderd te Con~i,:1l'r
Tie-in to   or    Further
City of Columbus   $358,800    
Heights   (depending    
    on where    
    connection   
    is made)    
In-line tx of Moderate 2-3 months $284,500 Moderate Moderate Moderdte Cunsider
St. Anthony       Further
Well Air       
Stripping       
Gran Act. tarbon Good 2-3 months $292,600 Moderate Low Modera te Consider
        Further
    " .   

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9
~
Publ ic Input

On June 28,1983, at 7:30 p.m., a public :neet.ing was held in coordination with
the City of St. Anthony's City Council meeting. The meeting took place in
the City of St. Anthony. There \~ere about 30 people in attendance. At this
meeting, the no-action alterndtive was recolTIi:tended for the present time, since
the contaminants in the water supply system were low to tr~ce levels. However.
the CH2M-Hill focused feasibility ~tudy for St. Anthony was presented as a
preliminary study of which alternatives were available to the City, should
it become necessary to imple~ent measures for a noncontaminated water supply.
Immediately to the north of St. Anthony is the City of New Hrighton which
has been experiencing sOll1econtaminant in their municipal wells. The CH2M-Hill
study recommended four alternatives after a preliminary screening. A final
recommendation of a temporary tie-in to the City of Roseville was viewed in
the CH2M-Hill report as the most cos t-effect i ve. tempora ry water supply
source. Copies. of this CHZM-Hill report were made available to the public
in the City offices and at the St. Anthony library. City council members
also were supplied with their own copies. No comments were received from
the general public at this time.
Since June of 1983, the City of St. Anthony has made an engineering study to
determine if a permanent or temporary connection to Roseville would be
reliable, feasible, and cost-effective. The alternative selected was a
temporary connection to the City of Rosevi11e.
On June 20,1984, a public meeting was held at the City of St. Anthony
City Council's office in St. Anthony. The selected alternative chosen
by the City of St. Anthony was presented along with the other alternatives
considered. Copies of the focused feasibility study from CH2M-Hill and
the study done by the City of St. Anthony were made available at the St.
Anthony library and at the MPCA offices.
Recommended Alternative
Section 300.68(j) of the National Oil and Hazardous Substances Contingency
Plan (NCP), 40 CFR, states that the appropriate extent of remedy shall be
determined by the lead agency's selection of the remedial alternative
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 pro-
tection of public health, welfare, or the environment. Based on our
evaluation of the cost-~ffectiveness of each of the proposed alternatives,
any comments received from the public (none received) and the City Council
of St. Anthony, information from the state. and information from the feasibility
studies done to date, Alternative 1 has been selected and developed. This
alternative is the temporary connection to the City of St. Anthony. The City
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Of St.';nthony JidJn L'n<]ineerin~ ::.tudj to detemine' if a perJ71anent or
t~71~orJrj cunnection would be feJsible and cost-effective. Uased on the
City's study. the temporary conn~l~tion would be Inore cost-effective.
::'ust-estil:'\ates for temporary water service was dpproxilildtely $150,000. and
CJst-estimates for a permanent wdter service was approxil:1ate1y $170,000.
City officials of St. Anthony stated that the City of Rosevi11e had'
concerns if the permanent alternative was chosen. a study of the Rosevil1e
water s~pp1y 1 ines would need to be done to assure that the connecticin
would not disturb the present wdter system in place ~resently (see
June 21, 1984, stdte~ent from the St. Anthony Public Works Director).,
Schedule
Approve Remedial Action (sign ROu)

Award Superfund State Contract for
Construction
7/10/84
7/15/84
Compl ete Des i gn
Completed usiny MPCA Superfund monies
Complete Construction
7/15/84
7/30/84
Start Construction
Future Actions
A two-phased r~media1 investigation is underway presently. Phase 1 is
expected to be completed this year. Phase 11 is expected to be completed
next year.

The 000 is conducting a remedial investigation/feasib1ity study for the
TCAAP base only. The 000 draft phase 11 and III are available for comment
presently. Negotiations with the ODD are presently underway. '

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