22047_University Place Mall_RA-732_5371_DENR_1990-1

Incident Name -QkE5�c �.
legion/County [)rc.+1c�C. _
Grouncl4ater Incident File #
Ranking Performed by Lute ID
NORTH URDLINA
GROU fJ�TER CCUrAM7NATION INCIDENT MANAGE=
SITE PRIOR.I'Z'X RANKING SYSTEM
Po ants
Ax'n YA-ei
I. 7M T HAZARD ASSES9gN'T'
A. Explosion -- free product in confined
areas or:vapor phase product detected
at or above 20% of the lower explosive
Limit; award 50 points total
B. Fire - free product subject to ignition
in exposed areas such as surface water
impoundments, streams, excavations, etc.;
award r0 points total C>
8►Y'�C1� �_�ul�l►Yi
A. Contaminated Drinking Water Supplies
1. Private, domestic water
supply well contain -rag substances
in concentrations exceeding Class GA
underground water quality
standards; award 10 points per well.
2. Public or institutional water
supply well containing substances in
concentrations exceeding Class GA
underground water quality standards;
award 30 points per well Q
3. Exceedences of Class WS-1 surface
water quality standards as a result
of groundwater discharge; award 20
points per surface water body airpacted 0
4. If a water supply well identified in
items IT.A.1 and II.A.2 cannot be
replaced by an existing public water
supply source requiring hook-up only;
award additional 10 points per
irreplaceable will

CSC Cbntamiriation Incident Management
Site Priority Ranking System
page 2
B. 'Threat To Uncontaminated Drinking water Supplies
1_ Private, domestic water supply �,e11
located within 1500 feet d wng-,-adient
of contaminant source; award 10 points
per well
2_ Public or institutional water supply
well located within 1/2 mile downcradient
of contaminant source; award 15 points
per well
3_ Raw surface water intake for public
water supply located within
1/2 mile downgradient of contaminant
source; award 5 points per water
supply system
4. If a.rry well identified in items II.B.1
and II.B.2 is located within 250 feet
of contarr-pant source; award additional
20 points total
C. Vapor Phase Exposure
1. Product vapors detected in inhabitable
building (s) award 30 points total
2. .Product vapors detected in other confined
areas (uninhabitable buildings, sewer lines,
utility vaults, etc.); award 5 points total
III. CCN.CAM gANI' HAZARD ASSFSR LENT (chemical groups are
categorized based on toxicity, mobility and
persistence in the envirorunent) . Evaluate the
Trost hazardous substances detected and select only one
of the following:
A. Asgard 30 points total if contaminants detected
are identified with any of the following groups:
1. Aromatic (Benzene) Acids
2. Acetic Hydrocarbons (Ber-ene Cerivatives)
3. Sulfonated Hydrocarbons
4. Halogenated ,Hydrocarbons
5. Alkaloids
6. Anilines
7. Phenols
8. Aldehydes
9. Ketones
10. Organic Sulfur Corrp<-;unds (Sulfides,
Marcaptans)
11. Organcmetallic Compounds
0
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to]
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Ci
W

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GW Cbntwmination Incident Management
Site. Priority Ranking system
Page 3
12 _ Cyanides
13. Esters
14. Ve to 1 Salts, Including Heavy toe tal s
B. Awaxd 20 points total if contaminants detected
are identified with any of the following groups:
1. Aliphatic (Fatty) Acids
2. Alcohols
3. Aliphatic Hydrocarbons (petroleum [derivative)
4. Pyridines
5. Tniocyanides',
6. Mineral and Metal Acids
7. Mineral and Metal. Bases
8. Oxides
9. Sulfides
C. Award 10 points total if contaminants detected
are identified with any of the following groups:
1. Aliphatic Amines and Their Salts
2. Sugars and Cellulose
3. Carbon and Graphite
TV. SOURCE ASSESSMENT
A. Free product thickness of > 1/4 inch
detected on watery table in observation
or monitoring well; award 20 points:
total
B. Contaminated Soil (select only one
answer)
I. Soil saturated with product
(saturation determined by release of
free liquid upon carpaction of a soil
sample by hand pressure) ;
award 10 points total
2. Soil exhibiting organic vapor content
above 100 ppm as measured by organic
vapor or volatile organic detection
equipment;' award 5 points total
C. Uncontrolled or Unabated Primary Source (including
dumpsites, stockpiles, lagoons, land appli-
cations, septic tanks, landfills, underground
and above ground storage tanks, etc.)

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GW ODntamination Incident i�anagement
Site Priority Rankin: System
Wage 4
I - Si-ispected or confirm source
remains in active use and continues to
receive raw, product, wastewater or
solid -,.aster award 20 points per source
2- Active use of suspected or confirmed
source has been discontinued or source
was caused by a one --time release of
product or waste, however, source
continues to release product or
conta7t Lni nts into the environment,
award 10 poi-nts per source
V. ENVIF�( FN AL LABILITY ASSESSMENT
A. Vertical Contaminant Migration - Literature or
well logs indicate that no confining layer is
present above bedrock or above twenty feet below
landsurface; award 10 points total
B. Horizontal Contarmnant Migration - Data or
observations indicate that no di-scha...-ge points
or aquifer discontinuities exist between the
source and the nearest downgradient drinking
water supplv ; award 10 Points total
C. Hydraulic Gradient Is Determined By (select
o�one an -per) :
I. Calculations based on groundwater level
measurements; award 10 points total
2. Observation of significant recharge/discharge
features in the vicinity of contaminant source
and local topographic features; award 5 points
total
3. Observation of local topographic features
only; �,jard 0 points
D. Existing Groundwater Quality
I. Analytical test(s) performed on groundwater
sample(s) obtained from site confirm presence
of substances in concentrations exceeding Class
GA u cleargxound water quality standards; award
10 poir:ts total
2. Source(s) identified in Section TV constitute
the only known source(s) of contamination
resulting in exposure or potential exposure
i.denti�ied in Section II; award 10 points total
TOTAL POINTS AWARDED ��