MITRE -• -GCQ17

22 August 1986W52-1489

Ms. Jeanne GriffinU.S. Environmental Protection Agency230 South Dearborn StreetChicago, Illinois 60604

Dear Ms. Griffin:

C E I VAUG gy '986

ProgramSupport Section

Enclosed is the revised QA package for Dakhue Sanitary Landfill.As we discussed, in the original QA package ethyl ether was assignedan incorrect toxicity/persistence value of 15. Its correct value, 9,is dictated by moderate oral toxicity (Sax, 6th) and low persistence(straight-chain hydrocarbon). In the revised package I havesubstituted chlorobenzene for ethyl ether as the highest-scoringcompound, for a toxicity/persistence value of 12. As a result, theground water route score has decreased from 55.26 to 44.90 and thecombined migration routes score has decreased from 31.94 to 25.95.

Please submit this revised package in triplicate to the EPADocket Clerk, Ms. Denise Sines, at EPA Headquarters and replace theoriginal in the Regional documentation record.

If you have any questions, please do not hesitate to call TonyLee at (703) 883-6502 or me at (703) 883-7676.

Sincerely,

EPA Region 5 Records Ctr.

208925

SR/ksEnclosure

Sue RussellTeam LeaderHazardous Waste and Safety Systems

The MITRE CorporationMetrek Division

1820 Dolley Madison Boulevard, McLean, Virginia 22102-3481Telephone (703) 883-6000/Telex 248923

Sitt

•totit bleu!** 9corm to

PTCUHOEATER ROUTE

QUALITY ASSURANCE SUGARY »CETMATRONAL PRIORITIES usr

Location i

1. OBSCRVQ RELEASE

0»pth to Aquifu «TCbne*rn

Nbt fr«c^eit«tion

Panvibllity of th»ttotturvttd Zon«

fhytJeal ttttt

' 2. TOTAL (BUTECHARACTERISTICS

3. CDNTAIMCNT

*oileity/Nrtist»nc«

l uirdoui VMtt Quantity

4. TOTAL WSTECHARACUR1STICS

Crouotfwittr Ub«

Diitane* to Ncarmt«*ll/Teoulation Strwd

I. TOTAL TARGETS

XT /ot -?

•

6XOU>CMATER ROUTE SUBTOTAL

AIR ROUTEOriqjntl OA Ciff

. ^. OBSERVED RELEASE

i\iM<»ctivity *id Into*., j>»tibiJity ^

Tnieitv

Kiitrdbuc Vistt Ouwrtit^

2. TOTAL WSTECHARACTERISTICS

.Population Within * Mil

Olctanct to femitiwEnvironavnt

Lwid UM

). TOTAL TARGETS

.

•

AIR ROUTE SUBTOTAL

r i i i

MTCT IPUTt

Drigirwl 0» Dlff

\. OBSERVED RCIEASC

r*eility COM 0<dInttrvvning T«rr«in

1-T»tr. *«-feur «alflf»!J

Dlitvx* to N»«rMt,JurfK» Ht*r

fVtieml Skit*

2. TOTAL IBUTEOURACTCftlSTXCS

9. CONTAINMENT•

Toiieity/Ptniitine*

Musrdous Vftttt Quantity

4. TOTAL ^ASTECHAMCHR1STICS

Surftei Vatir (to*

Distftnc* to • S^»itiv»wftvitortfvnfc

fopu!»tion Scr«*d/JDittrv* to Vctir Intaln

*5. TOTAL TARGETS

•

*

SUP/ACE HATEX ROUTE SUBTOTAL

I I I ]ACCRCGATE SITE RANK

ASONS FTDR SCORE~ ' " i f

NAH£ OT RCVIDCRs

Dakhue Sanitary Landfill (SW-50)

LfCaitton! S% of Sh of Stffi of Section 24; of NW»s of Section 25, T113N

EPARagton:

KlBw, Hampton Township, Dakota County, JUTV

Larry M. Welt, President

Paul K. Book 9/29/85

(For txampfe: tv>4W, turfacc impoundment. pM, oorrtAtrxr. typ«« of huardous tubsUncac; location of *>•lactfiy; contamination routa of major eoncam; typ*t of lnftxm*3on n»*3«d lor rating; ao*ncy action, MB.)

The site is a sanitary landfill located in a rural section of

southern Dakota County. Samples'of ground vater from two on- site

monitoring veils contained elevated levels of chlorl-nated bydror*..;,-:/.

carbons and solvents. Small quantities of Industrial vastes are

suspected to have been deposited at the site. Ground water in

area comes from an outvash/bedrock aquifer and is used for drinking

pmA 1rr1 paUnn.

3f.<& M&_ o.oo. o.ooSy • Cow ™

VE- N/A

RGURE1HRS COVER SHEET

Rating Factor

Q] Observed Release

Ground Water Route Work Sheet

Assigned Value Muitt-(Clrcie One) pller

o £D 1Score

45

Max. Ref.Score (Section)

45 3.1

If observed release is given a score of 45, proceed to line Q.If observed release Is given a score of 0, proceed to line [?).

DO Route CharacteristicsDepth to Aquifer ofConcern

Net PrecipitationPermeability of theUnsaturatad Zone

Physical State

3.20 1 2 3 2 6

0 1 2 3 1 30 1 2 3 1 3

0 1 2 3 1 3

Total Route Characteristics Score

EJ Containment

S Waste CharacteristicsToxicity / PersistenceHazardous WasteQuantity

0 1 2 3 1

19

3 3.3

3.40 3 6 9 ©IS 18 . 1 /<* 1800 2 3 4 5 6 7 8 1 1 8

Total Waste Characteristics Score

UJ TargetsGround Water UseDistance to NearestWell /PopulationServed

/3 26

340 1 2 ® 3 9 f

\ 0 4 6 6 10 1 35 .401 12 16 18 2D)24 30 32(55)40

Total Targets Score

S If line [JJ Is 45, multiply 0 i 0 « LUIf line Q] Is 0. multiply [5] x [3] x Q i [3

44

09*

48

57,330

H Divide line Q] by 57.330 and multiply by 100 80W» *t*j.<jo

FIGURE 2GROUND WATER ROUTE WORK SHEET

AS-*

NOT EVALUATED

Surface Water Route Work Sheet

Rating Factor 1 Assigned Value(Circle One)

CD Observed Rslasse 0 . 46

Multi-plier

1

Score Max.Score

48

Ref.(Section)

4.1

If observed release Is given s value of 45, proceed to Una [TJ-If observed release Is grvsn s value of 0, proceed to line (5J.

CD Route Characteristic*Facility Slope and Intervening 0 1 2 3Terrain

1-yr. 24-ftr. Rainfall 0 1 2 3Distance to Nearest Surface 0 1 2 3Water

Physical State

LH Containment

0 1 2 3

4.2

1 3

1 32 6

1 3

Total Route Characteristics Score

0 1 2 3

H Waste CharacteristicsToxicity /Persistence 0 3 6 8 12 18 18Hazardous Waste 0 1 2 3 4 8 6 7 8Quantity

1

16

3 44

4.41 181 6

.

Total Waste Characteristics Score

L5J TargetsSurface Water U s e 0 1 2 3Distance t o a Senaltive 0 1 2 3Environment

Population Served/Distance 1 0 4 6 8 10to Water Intake 1 12 16 18 20Downstream J 24 30 32 .38 40

26

3 .. B2 6

1 40

Total Targets Score

Q2 M line 0 Is 45, multiply 0 x 0 x GJIf line [Tj is 0, multiply 0] « Q] i 0 x GO

H Divide line [|J by 64.350 and multiply by 100

•

*

95

64.350

S,w- 0.00

FIGURE 7SURFACE WATER ROUTE WORK SHEET

NOT EVALUATED

Air Route Work Sheet

Rating FactorAssigned Value

(Circle One)Multi-plier

Observed Release 49 1

Score Max.Score

45

Ref.(Section)

5.1

Date and Location:

Sampling Protocol:

If line 0 is 0. the Sa - 0. Enter on lineIf line 0 Is 45, then proceed to line \2\

Waste CharacteristicsReactivity andIncompatibility

ToxicityHazardous WasteQuantity

5.20 1 2 3

0 1 2 30 1 2 3 4 5 6 7 8

31

98

Total Waste Characteristics Score 20

TargetsPopulation Within4-Mile Radius

Distance to SensitiveEnvironment

Land Use

5.3, 0 9 12 15 1621 24 27 300 1 2 3

0 1 2 3

1

2

1

30

6

3

Total Targets Score

Multiply OJ x

39

35.100

Divide line 0 by 35.100 and multiply by 100 S,- 0.00

FIGURESAIR ROUTE WORK SHEET

Groundwater Route Score (Sgw)

Surface Water Route Score (S,w)0.00 0.00

Air Route Score (Sa) 0.00 0.00

gw aw *a

• FIGURE 10WORKSHEET FOR COMPUTING SM

f -, i,

u1

NOT EVALUATED

Fire and Explosion Work Sheet

Rating Factor Assigned Value(Circle One)

Multi-plier

Containment

-

Waste CharacteristicsDirect EvidenceIgnltsbilltyReactivityIncompatibilityHazardous WasteQuantity

00 10 10 10 1

32 32 32 32 3 4 5 6 7 8

Total Waste Characteristics Score

TargetsDistance to NearestPopulation

Distance to NearestBuilding

Distance to SensitiveEnvironment

Land UsePopulation Within2-Mile Radius

Buildings Within2-Mlle Radius

0 1 2 3 4 5

0 1 2 3

0 1 2 3

0 1 2 30 1 2 3 4 5

0 1 2 3 4 5

Total Targets Score

Multiply 0 x

Max.Score

Ref.(Section)

7.1

7.233338

20

7.38

3

3

35

24

1,440

Divide line 0 by 1,440 and multiply by 100 S FE • N/A

FIGURE 11FIRE AND EXPLOSION WORK SHEET

NOT EVALUATED

Rating Factor

ID Observed Incident

Direct Contact Work Sheet

Assigned Value(Circle One)

0 45

Multi-plier

1

ScoreMax.Score

45

Ref.(Section)

8.1

If line 0 Is 45, proceed to Una 0If line 0 Is 0. proceed to line 0

OQ Accessibility

LrJ Containment

fin Waste CharacteristicsToxtelty

ED TargetsPopulation Within a1-Mlle Radlua

Distance to •Critical Habitat

0 1 2 3

0 15

0 1 2 3

0 1 2 3 4 5

0 1 2 3

1

1

S

3

IS

15

4 20

4 12

Total Targets Score

|T| If tine 0 is 45, multiply 0 x 0 x [j]If line 0 is 0. multiply 0 x \j\ x 0 x QD

• 32

21,600

84

8.3

8.4

84

0 Divide line 0 by 21.600 and multiply by 100 SQC • N/A

FIGURE 12DIRECT CONTACT WORK SHEET

DOCUMENTATION RECORDSFOR

HAZARD RANKING SYSTEM

INSTRUCTI0?TS ; As briefly as possible sumnarige che information you usedco ss*ijn che score for each factor (a.j., "Vaste quantity • £,220 drumsplus 800 cubic yards of sludges"). The source of inTsrnacion should beprovided for each encry and should be a bibliographic-type reference.Include che location of che document.

FACILITY NAXS: Dakhue Sanitary Landfill (SW-50)

LOCATION: S*s of SH of SVEj of Section 24; NEk of NWk of Section 25, T113N,R18VJ, Hampton Township, Dakota County, MN

DATS SCORI3: 29 September 1985 _ : .

PSSISCN SCORING: Paul R. Book _ '

PRIMARY SOURC2(S) OF IllFORHATIOM (e.f., r?A rejion, state, FIT, etc.):company, federal, state, FIT, municipal

FACTORS SOT SCORED DUE TO INSUFFICIENT I.NF02.HATION:

Surface Water Route, Air Route, Fire and Explosion Mode, Direct Contact Mode

COM>2NT5 CR QUALIFICATIONS:

1 03SZRVE3 *tLIAS£

Concsoinanc* dec*c:ed (5 aaxiaua):methylene chloridechlorobenzene1,1,1- trichloroethane ^ (Ref. 1)ethyl ether1,1,2, 2-t etrachloroethyleneand othersRational* far attributing che contaminants ca the facility:The above compounds and others were found in one or both southern on-sitemonitoring wells and not in a northern on-site -monitoring well; wells sampled7/25/85. Organic and inorganic compounds, including lead and cadmium, were .found in a southern monitoring well during earlier sampling episodes, howeverno background samples were collected on those dates. (Refs. 1, 2 and 3)Also, it has been found that pE drops sharply between the northern well and thesouthern wells, while specific conductance increases. This suggests that materialis being released into ground water from the facility between those areas. (Ref.A, p 22) Value - 45 (Ref. 15)I RC'JTS

Seaeh go Aquifer of Concern * . •

.Vaoe/d*icripcicn af aquifers(s) of cancers:The aquifer of concern consists of glacial outwash sands and gravels and under-lying St. Peter Sandstone, Prairie du Chien Dolomites and Jordan Sandstone (Ref.4, pp3r~7 and p36, Appendices A and C, and Ref. 18). The aquifer extends to adepth of at least 455 feet below the surface of the ground in the vicinity ofthe site (Ref. 4, Appendix A).

Se?eh(s) fraa che ground vurfaca Co she hijh«st seasonal Laval of chesaturates* coni {v«:«r cabled)] of the. aquifer of cancers:

N/A

3e?ch froa she ground surface ta ch* loutsc poiae of vases disposal/storage:

N/A

Nee ?T»gisitation

Mean annual ar seasonal precipitation (list aonth* for seasonal):

N/A

Mean annual lake or seasonal evaporation (list aonchs for seasonal)

N/A

N«t precipitation (subtract the above figures):

N/A

?8T-=eabilicv of Unsacuraced Zone

Soil cyp« in unsaturated root:

N/A

Permeability associated vith soil type:

N/A

Phvsieal State

Physical state of substances ac tiae of disposal (or at present ciae fargenerated gases):

N/A

3 CONTAINMENT

Cop.cair.aene

M*chod(s) of vasce or Isachace cancaianeac evaluated:

N/A

Method, with hlghesc scare:

N/A

4 WASTE CHARACTERISTICS

Toxicity and Persistence

Cocpour.d(s) tvaluaced:methylene chloridechlorobenzene1,1,1-trichloroethane \ (Ref. 1)ethyl ether1,1,2,2-tetrachloroethylene

Compound with highest scare:

e»je»c- (Refs- 15 and 20)

Matrix value - /& (Ref. 15) ' ^ ' J /

Hazardous Waste Quar.eiey

Tocal cuancity of hazardous substances ac che facility, excluding chosewith a concainnenc score of 0 (Give a reasonable esciaaca ev«a ifquantity is above naxiaua):•

unknown

Basis af escisacing and/or computing waste quantity:Hazardous substances have been observed in ground water from beneath the facility.However,'the quantity of waste associated with these materials is not known.

Value - 1 (Ref. 15)

* * *

5 TARGETS

Craund Vaeer Use

CseXs) of aquifer(s) of concern within a 3-mile radius of che facilitv:The aquifer of concern is used for irrigation and for domestic drinking watersupplies in the area of concern (Ref. 4, Table 1, Fig. 2, Appendices A and B,andRef. 19). Residents have no known alternate unthreatened source of supply (Ref. 17).

Value - 3 (Ref. 15)

Distance te Nearest Welj,

Location of nearest veil drawing from acuifer of concern or occupiedbuilding noc served by a public wacer supply:The William Callister well (#121807) is located to the southeast of monitoringwell BAL-1 at the site (Ref. 4, Figs. 2 and 6, and Appendix A) and is used forirrigation (Ref. 4, Appendix B).

Distance co above veil or building:The William Callister well is located approximately 1300 feet southeast ofon-site monitoring well BAL-1 (Ref. 4, Figs. 2 and 6), which is contaminated(Ref. 1).

Value - 4 (Ref. 15)

Population Served by ground Water Veils Vithin a 3-Mile Radius

Identified water-supply well(s) drawing froa aouife-(i) of eanesrnwithin a 3-sile radius and populations served by each:143 houses (Ref. 5) @ 3.8 people per house - 543 people.

Computation of land area irrigated by supply well(s) drawing froaacuifer(i) of concern withia a 3-mile radius, and caaveriisa fopopulation (1.5 people per acre):Approximately 307, of the area of concern is irrigated by ground water (Ref. 19),

(((5280 ft/mi)(3 mi))2pi)0.30/43560 ft2/acre - 5429 acres

(5429 acres!(1.5 people/acre) - 8144 people-equivalents

Total population s«rved by ground wacer within a 3-aile radius:543 people + 8144 people-equivalents - 8687 people-equivalents

Value - 4 (Ref. 15)Matrix value - 35 (Ref. 15) / /

/.->/••/

UL

NOT EVALUATEDSURFACE WATER SCUTE

1 OBSERVED RELEASE

Contaminants detecred in surface wacer ar the facility or downhill fromic (5 aaxiaus):

No contaminants have been documented at or near the surface at this site,and therefore none can be shown to be available to migrate by the surfacewater pathway.

Rationale for attributing che concaraiaants co che facilicy:

N/A

* * *

2 ROUTE CHAHAC7SRIST1CS

"aeilitv Slope and Intervening Terrain

•Average slope of facility in percent:

N/A

.Vame/descripcian of nearest downs Lop* surface water:

N/A

Average slope of terrain between facility and above-cited surface waterbody ia oercent:

N/A

Is che facility located either totally or partially in surfacs vac*r?

Is the facility completely surrounded by areas of higher el«vatian?

N/A

1-Year 2i-Sour Rainfall ia Inches

N/A

Distance Co Nearest Downs lose Surface Water

Physical State of Vasre

N/A

* * *

3 CONTAINMENT

Contairaaene

Mechod(s) of waste or leachace cantaiaaenc evaluated;

N/A

Method with highest scare:

N/A

4 WASTE OiARACTERlSTICS

Toxicitv and Persistency

Coopound(s) evaluated

N/A

Coepound with highest scare:

N/A

Hazardous Waste Quantity

Total quancicy of hazardous substances ac the facility, excluding chosewith a containment score of 0 (Give a reasonable esrimac* even ifquantity is above aaxiraua):

N/A

Basis of estimating and/or computing vaste quantity:

N/A

* * *

5 TARGETS

Surface Wactr Use

tJse(s) of surface wacar within 3 miles downs: re act of the hazardoussubstance:

N/A

X

Is chare tidal influence?

N/A

Discanee ;g a Sensitive Envireeaent

Distance Co 5-acre (siniaua) coastal wetland, if 2 ailes or less:

N/A

Distance co 5-acrt (aininas) fresh-wac.tr wetland, if 1 mile or less:

N/A

Disctr.c* ca critical habitat of an endang«red species ar nationalwildlife refuge, if 1 aile or less:

N/A

Population Served by Surface Water

Location(s) of water-supply intake(s) within 3 ailes (free-flawingbodies) cr 1 mile (static water bodies) downsrrsas of the hazardoussubstance and population served by each intake:

N/A

^$k/uJ.Jl«-

Computation of land ar*a irrigated by above-cittd incake(s) andconversion to population (1.5 people per acre):

N/A

Total population- served:

N/A

Saae/descripcion of nearest of above wacer bodies:

N/A

Distance to above-cited intakes, aeasured in streaa ailes

N/A

10

NOT EVALUATEDAIR ROUTS

1 OBSERVED RELEASE

Contaminants detected:

No sampling of ambient air has been conducted at this site.

Dace and locacion of detection of contaminants

N/A

Methods used to detect the contaminants:

N/A

Rationale for attributing che contaminants ca che sice:

N/A

* * *

2 WASTE CHARACTERISTICS

Reactivity and Ineotasaeibility

Most rtaccive compound:

N/A

Mosr incompatible pair of compounds:

N/A

11

Toxicity

Most coxic compound:

N/A

Hazardous Waste Quantity

Total quancicy of hazardous waste:

N/A

Basis of estimating and/or computing waste quantity:

N/A

*• *• *

3 TARGETS

Peculation Within 4-Mile Radius

Circle radius used, give population, and indicate how determined:•

0 to i mi 0 Co 1 ai 0 co 1/2 mi 0 ea 1/4 mi

N/A

Oiscanee to a Sensitive- Ehvirenmene

Discanee Co 5-acre (minimum) coascal wetland, if 2 miles or Itss:

N/A

Discanee ca 5-acr* CaLvlaum) frssh-wacar wetland, if I oile or less:

N/A

12

Distance- to critical habicac of aa endangered species, if I aile orless:

N/A

Land Use

Dijcance Co cooaercial/iaduscriai area, if 1 aile or less;

N/A

Discanee to national or state park, forest, or wildlife reserve, Lf 2ailes or less:

N/A

Distance to residential area, if 2 miles or less:

N/A

Distance ca agricultural land in production within past 5 years, if 1aile or lass:

N/A

Distance) so prime ajriculcurtl land in produccion within past 5 years, if2 miles or less:

N/A

Is a historic or landaark sice (National Register or Historic Places aadNational Natural Landmarks) within the view of che site?

N/A /

13 WAIL

NOT EVALUATEDFIR£ AND EXPLOSION

1 CONTAINMENT

Hazardous substances preseac:

The threat of fire or explosion has not been documented for this site.

Type of containment, if applicable:

N/A

* * *

2 WASTE CHARACTERISTICS

Direct Evidence

Type of* instrument and measurements:

N/A

Igaicability

Compound used:

N/A

Reactivity

Most reactive compound:

N/A

Incompatibility

Most incompatible pair of compounds:

N/A

Hazardous Waste Quantity

Tocal quantity of hazardous substances at the facility:

N/A

Basis of estimating and/or computing wasce quantity:

N/A

* * *

3 TARGETS

Distance to Nearest Population

N/A

Distance to Nearest Building

N/A

Distance to Sensitive Environment

Discanee to wetlands:

N/A

Distance; 60 critical habitat:'"-,- "

N/A

Land Use

Distance co commercial/industrial area, if 1 aile or less:

N/A /")/.(r<"7 /

15 ds*• X .• .'

Discanca co national or state park, forest, or wildlife reserve, if 2ailes or less:

N/A

Distance to residential area, if 2 mile* or less:

N/A

Discaace to agricultural laad ia production within past 5 years, if 1vile or less:

N/A

Distance to prise agricultural land ia production within past 5 years, if2 miles or less:

N/A

Is a historic or landmark sice (National Register or Historic Flaces aadNational Natural Landmarks) within che view of che sice?

N/A

Population Within 2-Mile Radius

N/A

Buildings Within 2-Mile Radius

N/A

^ r

16

NOT EVALUATEDDIRECT CONTACT

•1 OBSERVED INCIDENT

Dace, locatioa, aad pertiaenc decails of incident:

No hazardous materials have been documented as occurring at or near thesurface of this site.

2 ACCESSIBILITY

Describe type- of barrier(s):

N/A

* *> *•

3 CONTAINMENT

Type of containment, if applicable:

N/A

4- WASTE CHARACTERISTICS

Toxicicy -

Compounds evaluated:

N/A

Compound with highest score:

'-/N/A * + *

5 TARGETS

Population within one-mile radius

N/A

Discanee ee critical habicac (of endangered species)

N/A

18,-~i

'•

-REFERENCE LIST

1 Minnesota Department of Health water analyses; volatile hydro-carbon data sheets for samples #130935, 130936, 130937 and130938 collected by Rita Paquette (MPCA), 7/25/85.

2 Minnesota Department of Health water analyses; volatile hydro-carbon data sheets for samples t 130AA4 and 130445 collected byGerold Stahnke (MPCA), 6/6/83.

3 Minnesota Department of Health, inorganics data sheet for sample01304A1 collected by Gerold Stahnke (MPCA), 5/20/83.

A B. A. Liesch Associates, Inc., Dakhue Sanitary Landfill Hydro-geologic Investigation, Revised Report, Minneapolis, MN, January1985.

5 Composite map, USGS topographic maps for Cannon Falls, MN, 1974,and Miesville, MN, 1974, 7%' series. One, 2 and 3-mile radiiadded.

6 Deleted

7 Deleted

8 Deleted

9 Deleted

10 Deleted

11 Deleted

12 Deleted

13 Deleted

14 Deleted

15 Uncontrolled Hazardous Waste Site Ranking System, A Users Manual.National Oil and Hazardous Substances Contingency Plan, AppendixA (AO CFR 300)(A7 FR 31219), 16 July 1982.

16 Deleted

17 Record of telephone call from Anthony Lee (MITRE) to Dallas Larson(City of Cannon Falls), dated 3/11/86.

48 Record of telephone call from Anthony Lee (MITRE) to Dale Setterholm(Minnesota Geological Survey), dated 3/11/36.

19 Record of telephone call from Anthony Lee (MITRE) to Howard Moechnig(SCS), dated 3/12/86.

20 Sax, N. I., Dangerous Properties of Industrial Materials, 6th edition,Van Nostrand Reinhold, New Tork, 198A.