Colorado Smelter Lead Consultation Technical Review workgroup … · 2018. 8. 1. · Land Use: The Community Properties (OU1) portion of the site consists of about 2400 parcels within

COLORADO SMELTER LEAD CONSULTATION

TECHNICAL REVIEW WORKGROUP FOR LEAD

May 5, 2017

REGIONAL INFORMATION:

Date Submitted: April 5, 2017 Revised May 4, 2017

Region and Regional Contact Information: Region 8 - Charlie Partridge, Site Toxicologist,

Regional TRW Representative

EPA Site ID: CON000802700

City, County, State: Pueblo, Pueblo, Colorado

GIS Coordinates: Please see website

Website: https://cumulis.epa.gov/supercpad/cursites/csitinfo.cfm?id=0802700

BRIEF SITE HISTORY:

The Colorado Smelter site (Site) was one of five smelters operating in Pueblo at the turn of the

20th century. In addition, there was then and is still today an active steel mill (Evraz/Rocky

Mountain Steel/Colorado Fuel & Iron (CF&I)) located directly south of the Site, which the

Colorado Department of Public Health and Environment (CDPHE) regulates through their

Resource Conservation and Recovery Act (RCRA) program. The additional smelters included:

Pueblo Smelter/Rockwool facility, which was bordered by commercial/industrial properties and

was addressed via a mid-1990s removal action in which source material was capped in place;

Blende Smelter, which was addressed via a 2011 removal action in which soils were removed

and replaced, drainage was improved, and one property was capped; and the New

England/Massachusetts Smelter and Philadelphia Smelter, which were located on the eastern

edge of the steel mill facility. Limited sampling from these latter two smelters in the mid-1990s

showed very low metals concentrations in the remaining slag at these sites, although more

extensive sampling has not been performed, and it is unknown whether these smelters may have

impacted nearby communities in the past.

The Colorado Smelter was constructed in a ravine between Santa Fe Avenue and the Denver &

Rio Grande railroad tracks. This former ASARCO silver-lead smelter operated from 1883 to

1908, and most of the ore came from the Monarch Pass area located about 120 miles west of

Pueblo. The Site, which is now located within a residential and commercial area of south Pueblo,

was originally reported to the EPA in the mid-1990s via a citizen complaint of an orange

discharge to the Arkansas River just north of the Site. An on-site seep within the former smelter

footprint is contaminated with arsenic, cadmium, copper, lead, manganese and zinc. Historical

information indicates that the height of the main smelter stack was 200 feet, so past smelter stack

emissions were believed to be a likely source of lead and arsenic contamination in nearby soils.

Focused sampling completed in 2010 found elevated levels of lead and arsenic in residential soils

and in the remaining slag area.

https://cumulis.epa.gov/supercpad/cursites/csitinfo.cfm?id=0802700

The Site comprises two operable units: OU1, Community Properties, and OU2, the Former

Smelter Area. OU1 consists of a preliminary study area based on a one-half mile radius

surrounding the former smelter stack location on OU2. There are approximately 1900 homes and

another 400 parcels that include vacant properties, commercial businesses, schools, parks and

city-owned alleys within the OU1 study area. OU2 consists of an approximately 700,000 square-

foot (16-acres) slag pile and several more acres of active commercial businesses that overlie the

former smelter footprint. This lead consultation involves residential properties within OU1

(Figures 1A, 1B and supplemental attached file 1B).

DECEMBER 2016 OLEM LEAD DIRECTIVE

On December 22, 2016, the Office of Land and Emergency Management issued a lead directive

that recommends EPA consider existing lead policy as well as:

current scientific evidence of adverse health effects associated with blood lead levels

below 10 micrograms per deciliter (µg/dL);

Site-specific bioavailability of lead-containing source materials,

The use of additional site-specific IEUBK model input parameters to derive screening

levels,

Continued use of Superfund removal authorities to address imminent risks,

The role of natural and human-influenced background levels,

A multi-pathway approach working across programs and including collaboration with

federal, state and local partner agencies, and

Prioritization of resources for investigation and assessment of lead sites.

PURPOSE:

The 2016 OLEM Directive requires that regions consult with the Technical Review Workgroup

(TRW) Lead Committee and the Office of Superfund Remediation and Technology Innovation

(OSRTI) before finalizing any site-specific cleanup levels and cleanup decision documents. This

document summarizes the TRW-requested information that supports the Site’s TRW

consultation process and other information relevant to the Region 8 Superfund Lead Site Risk

Reduction Strategy (Strategy) that supports the OSRTI consultation. The Strategy seeks to

integrate risk assessment and risk management decision making, to achieve site-specific response

strategies that are scientifically defensible, result in desired health outcomes in temporally

relevant timeframes and support community goals and objectives.

In order to address residential soils in a timeframe that will eliminate continued lead exposure

from Site contaminants in the affected community, Region 8 proposes an early action interim

Record of Decision (i-ROD), so that remedial action may commence prior to completion of the

remedial investigation and that remedial action funds may be applied at the Site. The Region has

developed a preliminary remediation goal (PRG) for lead in soils at the residential properties and

is applying the multi-media approach and principles outlined in the Strategy to formulate its

overall response strategy. This memo serves to document the technical considerations and

process that Region 8 has used to arrive at the proposed PRG for lead.

SUPERFUND INFORMATION:

NPL Status: Final on the NPL; Fund Lead

Site brought to November 2016 Superfund Priority Panel: ranked 2nd nationally behind East

Chicago, Indiana site and 1st with respect to Fund-lead sites.

Time Critical or Non-Time Critical Removal Action: June – August 2016 Emergency

Removal Actions for 20 indoor cleanups related to high levels of smelter-related dust in

homes; March - April 2017 seven additional indoor Emergency Removal Actions completed.

Phase of the cleanup (Removal and/or Remedial): Remedial Investigation

Five Year Review Underway: NA

RCRA Corrective Action Site and Phase of Cleanup: NA

Enforcement Process (e.g., PRP Search, etc.): A PRP search was completed on January 26,

2016, indicating that American Smelting and Refining Company (ASARCO) was the

primary and likely the only significant PRP; however, on August 9, 2005, ASARCO filed for

bankruptcy, which was resolved in 2009. At this time, no additional PRPs have been

identified. The Region successfully petitioned for funds from the ASARCO Multi-State

Environmental Trust until depletion of the Trust in early-2017.

Remedy Design: NA

Size of the Site: Approximately 16 acres (OU2, Former Smelter Area), plus the OU1 ½-mile

radius study area.

Land Use: The Community Properties (OU1) portion of the site consists of about 2400

parcels within a ½ -mile radius of the former smelter’s main stack. The former smelter area

(OU2) is primarily a vacant riparian area that supports several homeless camps and has

viable commercial businesses on its eastern side.

Cost of the cleanup: $40M-$100M (varies greatly, depending on cleanup level and number

of homes)

TECHNICAL/RISK ASSESSMENT INFORMATION:

Sources of Exposure: Primarily soil and indoor dust contaminated by deposition of historic

smelter stack emissions and windborne material from smelter waste piles. Residential soils

may also be affected by use of smelter waste pile material as fill.

Pathways of Exposure: Primarily incidental ingestion; however, also dermal contact with,

and inhalation of soil and indoor dust by residents.

Sampling Method: Following completion of a Demonstration of Methods Applicability

(DMA) for 12 properties within the Site preliminary study area, the Site team determined that

collecting five-point composite samples would be adequate for the majority of surface and

subsurface soil samples on this site, due to the small size of the residential properties. The

DMA report, which is available at: https://semspub.epa.gov/work/08/1720000.pdf, informed

the development of the Operable Unit 1 Remedial Investigation Quality Assurance Project

Plan (RI QAPP) (https://semspub.epa.gov/work/08/1765373.pdf). If the DU was larger than

5000 square feet in size, the RI QAPP indicated that a 30-point incremental sample would be

collected. Each sample is comprised of sample cores collected at points spread around the

yard area to be characterized. A sample core will be collected to a depth of 18 inches at each

pin flag location. These locations correspond to the approximate bottom center of each grid

square.

Typically, five-point composite sample cores were collected from four depth intervals on

each property (0-1”, 1-6”, 6-12”, and 12-18”).

For 5-point composite samples, additional sample volume is collected from the 0 to 1”

interval in order to ensure that sufficient material is available for analysis. To collect this

material, use a trowel or sampling spoon was used.

The various yard components or DUs to be sampled were identified in accordance to the

Residential Lead Sites Handbook. DUs were identified on the property map and verified

during the site walkthrough. The sample crew identify approximate sample locations in pen

on the property map, and then stake the locations in the yard using pin flags. This typically

involves staking a 5-point star pattern for the five sampling locations within a DU, but may

involve a different layout, if site specific factors make adjustment necessary (to avoid a yard

feature like a concrete walkway, or sprinklers for example). (See Figure 2 for Example DU

assignment)

Soil Processing: Following the DMA and OU1 RI QAPP documents referenced above,

samples were dried, then sieved using #10 and #60 sieves. The fraction passing 60 mesh

sieve was analyzed by XRF and/or laboratory analysis.

Interior Dust: High Volume Vacuum Sampler

https://semspub.epa.gov/work/08/1720000.pdf

https://semspub.epa.gov/work/08/1765373.pdf

Laboratory analytical SOPs to be used on the site include the following:

Title, Revision Date, and/or Number and URL

Screening or

Definitive

Data

Matrix/Analytical

Group

SOP Option or

Equipment

Type

Modified

for

Project?

(Y/N)

METHOD 6010C

INDUCTIVELY COUPLED PLASMA-ATOMIC

EMISSION SPECTROMETRY (ICP-AES), 11/2000,

http://www.epa.gov/osw/hazard/testmethods/sw846/pdfs/6010

c.pdf

Definitive Soil, dust/metals

(no mercury) ICP-AES N

Note: Sample preparation and analysis also included fixed XRF, which followed a site-specific XRF

Sample Preparation SOP (PWT-COS-302).

Sampling Summary (i.e., Max, Min, Mean, Median) of All Environmental Media (e.g.,

soil, dust, biota, etc.): Each summary is for the first 302 residential properties sampled

during the RI, including 12 properties sampled during the demonstration of methods

applicability (DMA) study. See Table 1 below for summary of soil samples, and Table 2

below for a summary of dust samples and Figure 3 for locations.

Table 1. Statistical Summary of Soil Data

Group

Number of Decision

Units or Properties

Lead Concentration (ppm)

Minimum Maximum Mean

0-1” bgs, DU averages, XRF 1,361 DUs 7.27 1,470 301




All depths, DU averages, XRF 5,324 DUs 7.27 3,910 254

0-1” bgs, DU averages, ICP/MS 173 DUs 6.7 1,560 316




All depths, DU averages, ICP/MS 600 DUs 6.7 3,910 294

0-1” bgs, property averages, XRF 302 properties 47 907 310

1-6” bgs, property averages, XRF 302 properties 60.3 2,210 338

6-12” bgs, property averages, XRF 302 properties 46 1,100 261

12-18” bgs, property averages, XRF 302 properties 26 967 168

Notes: Property averages are the average of the area-averaged concentration for each property. Mean values for the ICP/MS samples are generally higher than those for XRF because a disproportionate

number of confirmation samples were collected from higher concentration DUs early in the project.

http://www.epa.gov/osw/hazard/testmethods/sw846/pdfs/6010c.pdf

http://www.epa.gov/osw/hazard/testmethods/sw846/pdfs/6010c.pdf

Table 2. Statistical Summary of Dust Data

Group

Number of

Samples or

Properties

Lead Concentration (ppm)

Minimum Maximum Mean Median

All data 263 samples 8.2 2,130 209 127

Unfinished attics excluded* 254 samples 8.2 2,060 184 125

Property Averages 102 properties 10 1,514 187 131

* Note that one finished attic was included in this group.

Background data and the basis (i.e., number of samples, site specific, etc.): Site-specific

background data has not yet been collected. As a preliminary assessment of background, a

preliminary data set was developed using data from the USGS publication “Geochemical and

Mineral Data for Soils of the Conterminous United States” (Smith et al. 2013). These

background data are summarized in Table 3 below, as reported in the document “Technical

Memorandum, Preliminary Identification of Contaminants of Potential Concern”

Table 3. Statistical Summary for Lead in USGS Background Samples

Parameter Value

Detection Frequency 20 / 20 = 100%

Minimum Detected Concentration (ppm) 13.4

Maximum Detected Concentration (ppm) 80.9

Mean (ppm) 31.7

Standard Deviation (ppm) 14.3

Distribution Gamma

Potential Outliers Identified Yes (1)

Background Threshold Value, All Data (ppm) 70.5

Distribution, Potential Outliers Excluded Normal

Background Threshold Value, Potential Outliers Excluded 49.8

Notes:

Outlier tests performed using ProUCL 5.1 at a confidence level of 99%.

BTVs were developed using ProUCL 5.1. Upper tolerance limits with 95% coverage were used; where more than

one was available, the minimum was selected. For metals with potential outliers identified, the BTV developed with

potential outliers excluded was used for conservatism.

Geospeciation: Each set of soil and dust samples studied over the past two years shows

small differences in both arsenic and lead speciation, and they are all dominated by

pyrometallurgical and mining/milling related metal species. Metal forms that are common to

these processes include: Slag, PbAsO, CaAsO, PbMO, Galena, Arsenopyrite, AsMO, SnMO,

CuMO, SnMO, As2O3, and ZnMO. Although cerussite and anglesite commonly found in

these samples can also be related to lead-bearing paint, many of the particles are either too

large to be paint pigments or are directly associated with other phases (slag, galena, pyrite,

ect.) that have no relation to lead paint. Soils apparently contain a significantly smaller

relative mass presence of leaded paint than dust samples. Since such a large proportion of the

lead and arsenic are found in pyrometallugical and mining/milling related phases, it is most

likely that lead and arsenic found in FeOOH and Phosphates is also related to these activities.

(Please see attached supporting file “Geospeciation.”)

IEUBK Parameters Altered from Default Values:

o Ingestion Rate – see Table 4 below for altered ingestion rates, which are based on

proposed new defaults for the IEUBK. The rationale for these changes are

documented in the “Technical Memorandum, Preliminary Remediation Goals”.

o MSD – 0.36, altered based on site-specific data. See “Technical Memorandum, Site-

Specific Soil-to-Dust Mass Transfer Ratio (MSD) Calculation” for rationale.

o Relative Bioavailability of Soil Lead – 63%, altered based on site-specific data. See

“Bioavailability Technical Memorandum” for rationale.

o Blood-Lead Reference Level – not altered, 10 µg/dL used as default.

o Other parameters changed from default – see Table 4 below for altered water

intake rates, inhalation rates, and dietary intake rates, which are based on proposed

new defaults for the IEUBK. In addition, an altered maternal blood lead concentration

of 0.8 µg/dL was used instead of the default 1.0 µg/dL, and an altered drinking water

concentration of 0.9 µg/L was used instead of the default of 4 µg/dL. The rationale

for these changes is documented in “Technical Memorandum, Preliminary

Remediation Goals”. *Note:Drinking water concentration based on TRW re-analysis

of national drinking water system data reported to USEPA.

Table 4. Intake Parameters Used for IEUBK Model

Age Ventilation Rate

(m3/day)

Dietary Intake

(µg/day)

Water Intake

(L/day) Soil Intake (g/day)

0-1 3.22 2.66 0.4 0.086

1-2 4.97 5.03 0.43 0.094

2-3 6.09 5.21 0.51 0.067

3-4 6.95 5.58 0.54 0.063

4-5 7.68 5.64 0.57 0.067

5-6 8.32 6.04 0.6 0.052

6-7 8.89 5.95 0.63 0.055

Notes: g/day grams per day IEUBK Integrated Exposure Uptake Biokinetic L/day liters per day m3/day cubic meters per day µg/day micrograms per day

Output of IEUBK Model– see Attachments for screenshots of input and output screens in IEUBK. Output is also summarized in Table 5 below.

Table 5. Lead Soil RBCs Based on 5 and 10 µg/dL Blood Lead Targets

Calculation

Alternative

MSD and

RBA Values MSD RBA Ingestion Rates

Soil RBC (mg/kg)

Blood Lead

Target = 5

µg/dL

Blood Lead

Target = 10

µg/dL

1 Default 0.7 0.6 Default 153 418

2 Default 0.7 0.6 EHP 2016 194 599

3 Site-Specific 0.36 0.63 Default 188 512

4 Site-Specific 0.36 0.63 EHP 2016 238 735

Notes:

EHP Environmental Health Perspectives

Preliminary Remediation Goal (PRG): (350ppm) Region 8 has derived a site-specific

preliminary remediation goal for lead in soil. The level derived is based upon a combination

of community- and site-specific parameters and conservative estimates of exposure that,

when considered together, result in a soil lead concentration protective for both children and

adults. The region is applying its lead site Strategy at the Site including a multi-media

approach to leverage our partnership with other federal partners, the local health department

and the municipal government to identify and mitigate other sources of lead exposure in the

community.

Associated Blood Pb Levels: This multi-media approach addresses lead in a holistic manner

and considers all sources of lead, not just lead in soils. These combined efforts give us

confidence that our site-specific preliminary remediation goal for lead in soil will be health

protective for the community surrounding Colorado Smelter. Using Alternative 4 listed

above in Table 5, 350ppm Pb would equate to a blood lead level of 6.24g/dl. Using

Alternative 1 listed above, 350ppm Pb would equate to a blood lead level of 8.89g/dl.

Therefore, Region 8 is proposing to apply Alternative 4 to the IEUBK model and to use

additional risk management considerations to choose a proposed soil clean-up level of

350ppm at the Colorado Smelter Superfund Site.

Media Concentration Data Summary (if available), Scribe Data Preferred: see attached

file “Media_Conc_Data_Tables.xlsx”.

Media concentrations are summarized as follows for the first 302 homes sampled during the

RI:

o Worksheet “Soil_XRF” contains all adjusted XRF soil sample data for lead.

o Worksheet “Soil_XRF_Prop_Avg”

o Worksheet “Soil_ICPMS” contains all ICP-MS data for lead in soil samples sent to

the CLP for XRF confirmation and correlation.

o Worksheet “Bioavail” contains all bioavailability data for lead in soil samples sent to

the University of Colorado for analysis.

o Worksheet “Dust” contains all ICP-MS data for lead in dust samples.

For Commercial/Industrial Sites (ALM), List the fetal Blood Lead Reference Level: NA

AGENCY COORDINATION

The Region has conducted extensive coordination with federal, state and local partners including,

but not limited to:

Colorado Department of Public Health and Environment (CDPHE)

Pueblo City/County Health Department (PCCHD)

ATSDR/CDC

Pueblo Board of Water Works

HUD

RISK REDUCTION BEYOND SOIL CLEANUP

HVAC Duct Cleaning Pilot Study: A removal action was completed on 27 residential

properties with indoor surface contamination that exceeded removal action levels for lead

and arsenic. This process did not include an extensive cleaning of the ductwork and

ventilation system. More information is needed on the potential for re-contamination due to

potentially contaminated dust in the ventilation system and the effectiveness of duct cleaning.

Literature lacks a consensus on whether cleaning the ductwork reduces exposure to lead in

homes where there is or was a lead dust hazard. The Region is conducting a pilot study of

three to five homes to help determine if further action is needed.

The State health department works collaboratively as a support agency to EPA and continues

to provide technical and community involvement oversight and support, including drafting

and reviewing various site documents for the Administrative Record. In 2016, the State

health department:

• Provided Supplemental funding to PCCHD for blood lead investigations to broaden

the program Pueblo-wide.

• Mailed out over 2,500 Informational postcards to ensure residents and property

owners within preliminary study area have the latest site information and contacts.

• Created a State Colorado Smelter website now available for public use that includes

the latest community meeting and public information tools.

EPA Grant to Pueblo City-County Health Department: In the spring of 2014 the Pueblo City-

County Health Department applied for a Superfund grant from EPA. To date the local health

department has been awarded over $400,000 from the Hazardous Substance Response Fund

for Lead Characterization and Risk Reduction through outreach, health education, home lead

risk assessment, and blood lead screening activities. The local health department has been

actively working on the grant by taking required training, developing outreach materials,

preparing for indoor lead characterization, planning, conducting, or participating in lead

outreach and education events from 2015 to present. Local health department staff regularly

participate in the monthly community advisory group meetings to better understand

community education and information needs as well as discuss how many screening

assessments have been completed in the Site study area.

The Pueblo City-County Health Department has completed a number of blood lead

investigations, healthy homes assessments and outreach activities. As of April 20, 2017,

these include:

• over 150 total blood lead screenings in the Superfund preliminary study area.

• 25 healthy home screenings in the Superfund preliminary study area.

• 11 elevated blood lead investigations for people above 5 micrograms per deciliter.

Includes both blood lead and healthy home screening.

• Voluntary blood lead screenings - In homes within the Superfund study area and those

receiving indoor lead dust cleanups.

• Healthy homes assessments and blood lead investigations - In homes where elevated

blood lead is identified and, in general, to assess risk of multiple sources of lead within the

homes throughout the study area.

• Community outreach and education -At existing community events, to the Pueblo

medical community and at the informational kiosk (corner of East Northern Avenue and

Eilers Avenue). In late April, two new lead education billboards were installed in the

community; on April 13, about 20 landlords, contractors and homeowners participated in the

Renovation, Repair and Painting training program in Pueblo; and in June, local health

department team members will attend the Summer Safety and Fun Fair annual community

event. (see attached file Education)

QUESTIONS FOR THE TRW:

Is the lead risk assessment science and site-specific application of the IEUBK model used to

support risk management decisions defensible and transparent?

NEXT STEPS:

Region 8 requests the TRW provide a memo documenting the appropriateness of site specific

parameters used in the IEUBK model and the protectiveness of the PRG listed above.

FIGURE 1A:

COPC Sample Location Map

Legend

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- XRF + ICP-MS

CJ XRF + Merrury

D XRF + ICP-MS + Mercury

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Lead Concentrations All Depths by Property - February 03, 2017

D Smelter Site Boundary

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'Note: Coloc schemes~ for mapping purposes only. and are not meant lo infer risk or possi>le cleanup levels.

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FIGURE 2:

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• ICPIMS - lndudn..ty Coupled Plasma Mass Spectrom,try: Analysis perl'ormed iD a commercial laborafory.

• " - " -Not sampled, compoDODf DOI preseDl"" P"'P"l1Y or omable lo coiled sampl, at that depth

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ATTACHMENTS 1-4:

ATTACHMENT 1

SCREENSHOTS FOR IEUBK MODEL INPUT/OUTPUT

CASE 1 – DEFAULT VALUES FOR ALL PARAMETERS

Air Data

Indoor air lead concentration (percentage of outdoor): ._I 3_0 __ _.

Outdoor Air Pb Concentration (µg/m'~

@ Constant Value: I.._0_.1 __ __,

0 Variable Values

Input for different age groups

Outdoor Air Pb Concentration (µg/m'): 0.1

Time Spent Outdoors [hr/day):

Ventilation Rate [m'/day~

Lung Absorption (%):

0-1 1-2

0.1

2-3

0.1

AGE [Years)

3-4

0.1

4-5

0.1

5-6

0.1

?

OK

~ancel

fleset

Help?

6-7

0.1

X

T AW Homepage: http: //www.epa.gov/superfund/health/contaminants/lead/index. htm

Dietary Data ? X

AGE [Years) 0-1 1-2 2-3 3-4 4-5 5-6 6-7

Dieta,y l eadlnlake (µg/day) IR I~~ 112.04 H~ll2,05 I~ OK

DIETARY VALUES

Use alternate dietary values? @No O Yes

~ancel

Beset

Help? Concentration (µg Pb/g] Percent of Food Class

Home Grown Fruits

Home Grown Vegetables

Fish from Fishing

Game Animals from Hunting

GI Values / Bioavailability

GI / Bio Change Values

0

0

0

0

0

0

0

0

(% of all fruits]

(% of all vegetables)

[% of all meat)

(% of all meat)

TRW Homepage: http://www.epa.gov/superfund/health/contaminants/lead/ indeK. htm

Drinking Water Data

Water Consumption (L/day)

0-1 1-2 2-3

~I o._2 ~ I I o.5 1 10.52

Use alternate water values?

AGE [Years) 3-4 4-5

1 1053 1 10 55

5-6 6-7

I 10.5s 1 105s

@ No If No, please enter the lead concentration in drinking water (µg/L): 1~4--~ Q Yes If Yes, please fill in the information below.

LEAD CONCENTRATION IN DRINKING WATER

Percent of Total Consumed as First Draw: 50

Concentration of Lead in First Draw (µg/L): 4

Concentration of Lead in Flushed (µg/L):

Percentage of Total Consumed from Fountains: 15

Concentration of Lead in Fountain Water (µg/L ): 1 0

GI Values/ Bioavailability TRW Homepage:

? X

QK

~ancel

Beset

Help?

GI/ Bio Change Values http:/ /www.epa.gov/superfund/health/contaminants/lead/indeK htm

Maternal Data

Mother's Blood Lead Concentr&tion &I Childt:Mrth (µg Pb/dLl

?

Q.K

flesel

Help?

TRW Homepage. http://www.eoagov/superh.nd/health/corlaminants/lead/index.hlm

X

Site Specific Soil Dust Data

So~/Oust Ingestion Weighting Factor (percent soil): 145

Outdoor Soil Lead Concentration (µgig) Indoor Dust Lead Concentration [µgig)

@ConstantValue .... 112_0_0_~

0 Variable Values

0 Constant Value 200

0 Variable Values

@ Multiple Sowce Analysis Set

Multiple Source Avg: .._I 1_50 _ __,

Soil/Indoor Dust Concentration (µgig) AGE [Years)

0-1 1-2 2-3 3.4 4-5 5-6

Outdoor Soil Lead Levels: 200 200 200 200 200 200

Indoor Dust Lead Levels: 150 150 150 150 150 150

Amount of So~/Oust Ingested Daily (g/day) AGE [Years)

0-1 1-2 2-3 3.4 4.5 5-6

Total Dust + Soil Intake: 10.085 I 10.135 I 10.13s I 10.135 I 10.100 I 10.oso

? X

OK

.Cancel

fieset

Help?

6-7

200

150

6-7

I 10.oss

GI Values/Bioavailab~ity


TRW Homepage:

http://www.epa.gov/superfund/health/contaminants/lead/ indeKhtm

GI Values/Bioavailability Information ? X

ABSORPTION FRACTION Access alternate bioavailability @ N

Q Yes MEDIA PERCENT parameters? 0 QK

Soil liiil FRl>.CTION PASSIVE/ HA .. F SAT:JRl>TION

130 TOTAL ACCESSIBLE Level (µg/day)

Dust

.Cancel

fieset 0.2 100

Water lso

Diet lso Help?

Alternate lo

TRW Homepage: http://www.epa.gov/superfund/health/contaminants/lead/index.htm

Multiple Source Analysis

Contribution of soil lead to indoor household dust lead (conversion factor):

Contribution of outdoor airborne lead to indoor household dust lead ( conversion factor):

Indoor Dust Lead Sources

Use Alternate Indoor Dust Lead Sources?

1100

Household Dust (average J

Concentration [µg Pb/g)

150

Secondary Occupational Dust 1200

Dust at School 200

Dust at Daycare 200

Second Home Dust 200

Lead-based Paint in Home 1200

TRW Homepage:

O Yes

Percent

100.000

0.000

0.000

0.000

0.000

0.000

? X

J;;ancel

Help?

http://www.epa.gov/superfund/health/ contaminants/lead/index. htm

Find Soil Pb Concentration

Select Age Group for Graph 0 to 84 months V

Parameter Change

Change Cutoff ~ µg/cP

Change GSO (Geometric Standard Deviation) ~

Probabaity of Exceeding the Cutoff (PC) ~ %

Soil and/or Dust Concentration !.._1_5_3 _ _, PPM

X

Rnd

Cancel

Help?

Please note

Depending on the values

enter, calculating PRG may take a few

moments.

TRW Homepage: http: //www.epa.gov/superfundlhealth(contaminantsneadAndex.hbn



Parameter Change

Change Cutoff ~ µg/cD


Probabiity of Exceeding the Cutoff (PC) ~ %

Soil and/or Dust Concentration ' "18 PPM

Rnd

Cancel

Help?

X

Please note


enter, calrulating PRG may take a few

moments.

TRW Homepage: http: l/www.epa.gov/supei-fundJhealth(contaminantsnead6ndex.htm

ATTACHMENT 2


CASE 2 – DEFAULT MSD AND BIOAVAILABILITY VALUES, INGESTION RATES FROM

VON LINDERN, 2016

Air Data




0 Variable Values






0-1 1-2

0.1

2-3

0.1

AGE [Years)

3-4

0.1

4-5

0.1

5-6

0.1

?

OK

~ancel

fleset

Help?

6-7

0.1

X


Dietary Data ? X

AGE [Years) 0-1 1-2 2-3 3-4 4-5 5-6 6-7


DIETARY VALUES


~ancel

Beset


Home Grown Fruits


Fish from Fishing




0

0

0

0

0

0

0

0

(% of all fruits]


[% of all meat)

(% of all meat)


Drinking Water Data


0-1 1-2 2-3

~I o._2 ~ I I o.5 1 10.52


AGE [Years) 3-4 4-5

1 1053 1 10 55

5-6 6-7

I 10.5s 1 105s









? X

QK

~ancel

Beset

Help?


Maternal Data


?

Q.K

flesel

Help?


X





0 Variable Values


0 Variable Values




0-1 1-2 2-3 3.4 4-5 5-6




0-1 1-2 2-3 3.4 4.5 5-6

Total Dust + Soil Intake: 10.096 I 10.os4 I 10.067 I 10.063 I 10.067 I 10.052

? X

QK

.Cancel

fieset

Help?

6-7

200

150

6-7

I 10.055



TRW Homepage:





Soil liiil FRl>.CTION PASSIVE/ HA .. F SAT:JRl>TION

130 TOTAL ACCESSIBLE Level (µg/day)

Dust

.Cancel

fieset 0.2 100

Water 150

Diet 150 Help?

Alternate lo







1100

Household Dust (average J


150


Dust at School 200

Dust at Daycare 200



TRW Homepage:

O Yes

Percent

100.000

0.000

0.000

0.000

0.000

0.000

? X

J;;ancel

Help?


i°;2 1f•Jet<.ni3tltdl.l ~"-'.It' v,r,i., 1 1. 1 'Sl.lh.ll l • IC1,.11~Jll,.mh ..C.• ,~, wa111~11:1~11>l

f"'T (ic g_cput !te',. ~

,.

f,O

f:.,11,• = !t.1 .. 111 1~·1"" CSD s UOO

n un t K~IIYC , .,,!;j s .• ;,t·, U7$

Cone¢11"iOA 1'.t. lllJU 1lKl1111l 1'6.000

HI

Olood Pb Con, ILl!lf11J " ,. 1H

....,, ;,. Cloo1io'le: HOit

.Aae Renie• u.-e, Oc:t lQ11ttd: 1,ou 12 Tl moMh• llun Mui.It -11,n, c:OJ•ct•

NJM

m IEUBKwm32 lf'ad Modf'I Venlon 1.1 8ulkl11 (Dlstr1but,on Proh for MultJple RWIS)

: L; file Qucput Y- l:itlP

75

50

25

, L ____________ _J___:=::::==~----------------------0

Cutoff : 10.000 pg/di GSO • 1.600

Run• "AbOVfl I 4.962 2 4.987 J 5.0IJ

Concenlralion 598.000 599.000 600.000

12 15 18

Blood Pb Cone (pgldl.J

21 " " Media Choice : SOIL Age Range • Us er Designated: Ages 12 • 71 months Run Mode : Research

JD

D X

ATTACHMENT 3


CASE 3 – SITE-SPECIFIC MSD AND BIOAVAILABILTY, DEFAULT INGESTION RATES

Air Data




0 Variable Values






0-1 1-2

0.1

2-3

0.1

AGE [Years)

3-4

0.1

4-5

0.1

5-6

0.1

?

OK

~ancel

fleset

Help?

6-7

0.1

X


Dietary Data ? X

AGE [Years) 0-1 1-2 2-3 3-4 4-5 5-6 6-7


DIETARY VALUES


~ancel

Beset


Home Grown Fruits


Fish from Fishing




0

0

0

0

0

0

0

0

(% of all fruits]


[% of all meat)

(% of all meat)


Drinking Water Data


0-1 1-2 2-3

~I o._2 ~ I I o.5 1 10.52


AGE [Years) 3-4 4-5

1 1053 1 10 55

5-6 6-7

I 10.5s 1 105s









? X

QK

~ancel

Beset

Help?


Maternal Data


?

Q.K

flesel

Help?


X





0 Variable Values


0 Variable Values




0-1 1-2 2-3 3.4 4-5 5-6




0-1 1-2 2-3 3.4 4.5 5-6

Total Dust + Soil Intake: 10.085 I 10.135 I 10.135 I 10.135 I 10.100 I 10.oso

? X

OK

.Cancel

fieset

Help?

6-7

200

82

6-7

I 10.005



TRW Homepage:





Soil Im FRl>.CTION PASSIVE/ HA .. F SAT:JRl>TION

131 .5 TOTAL ACCESSIBLE Level (µg/day)

Dust

.Cancel

fieset 0.2 100

Water 150

Diet 150 Help?

Alternate lo


Multiple Source Analysis ? X


10.36 QK




1100

@ No


Household Dust (average J 1s~ Secondary Occupational Dust 1200

Dust at School 200

Dust at Daycare 200



TRW Homepage:

O Yes

Percent

1100000 1

0.000

0.000

0.000

0.000

0.000

J;;ancel

Help?




Parameter Change



Probabiity of Exceeding the Cutoff (PC) ~ %

Soil and/or Dust Concentration ! 188 PPM

Rnd

Cancel

Help?

X

Please note



moments.

TRW Homepage: http: l/www.epa.gov/supei-fundJhealth(contaminantsnead6ndex.hbn



Parameter Change



Probabii ty of Exceeding the Cutoff (PC) ~ %

Soil and/or Dust Concentration ! s 12 PPM

X

Rnd

Cancel

Help?

Please note



moments.

TRW Homepage: http: l/www.epa.gov/supei-fundJhealth(contaminantsnead6ndex.htm

ATTACHMENT 4


CASE 4 – SITE-SPECIFIC MSD AND BIOAVAILABILTY, INGESTION RATES FROM VON

LINDERN, 2016

Air Data



@ Constant Value: l .... o_.1 __ __,

0 Variable Values






0-1 1-2

0.1

2-3

0.1

AGE [Years)

3-4

0.1

4-5

0.1

5-6

0.1

?

OK

~ancel

fleset

Help?

6-7

0.1

X


Dietary Data ? X

AGE [Years) 0-1 1-2 2-3 3-4 4-5 5-6 6-7

Dieta,y l eadlnlake (µg/day) ~~~~~~~ OK

DIETARY VALUES


~ancel

Beset


Home Grown Fruits


Fish from Fishing




0

0

0

0

0

0

0

0

(% of all fruits]


[% of all meat)

(% of all meat)


Drinking Water Data


0-1 1-2 2-3

~I o._4 ~ I 10.43 1 10.51


AGE [Years) 3-4 4-5

1 1054 1 10 57

5-6 6-7

I 10.s 1 1063

@:No If Nocplease enter the lead concentration in drinking __ ~~!.!1!. .. (l:\9f..~J:i l~o_.9_~ Q Yes If Yes, please fill in the information below.






Concentration of Lead in Fountain Water (µg/L ]: 1 0


? X

QK

~ancel

Beset

Help?

GI/ Bio Change Values http:/ /www.epa.gov/superfund/health/contaminants/ lead/indeK htm

Maternal Data

Mother's Blood Lead Concentration at Childbirlh (µg Pb/dLl

TRW Homepage:

10.B

?

OK

,Cancel

Besel

Help?

http://www eoa,aov /suoerh,nd/health/coriaminants/lead/index. him

X





0 Variable Values


0 Variable Values




0-1 1-2 2-3 3.4 4-5 5-6




0-1 1-2 2-3 3.4 4.5 5-6

Total Dust + Soil Intake: 10.096 I 10.os4 I 10.067 I 10.063 I 10.067 I 10.052

? X

OK

.Cancel

fieset

Help?

6-7

200

82

6-7

I 10.055



TRW Homepage:





Soil Im FRl>.CTION PASSIVE/ HA .. F SAT:JRl>TION

131 .5 TOTAL ACCESSIBLE Level (µg/day)

Dust

.Cancel

fieset 0.2 100

Water 150

Diet 150 Help?

Alternate lo



Contribution ol soi lead to indoor household dust lead (corwersion factor~

Contribution ol outdoor airborne lead to ndoor household dust lead (conversion factor~

Indoor Dust Lead Sot.l'ces

UseAltemate lndoOf Dust Lead Sources?

Household Dust (average)

Concerlration (µg Pb/g)

82


Dust at School 200

Dust at Daycare 200

Second Horne Dust 200

Leed-i,,,sed Pont in Home 1200

Q Yes

Pe,cent

100.0CXJ

0.000

0000

0000

0 000

0 000

QK

l:;ancel

He~?

TRW Homepage: http://www.epo.gov/supedund/heolth/contominorlst1eod/nde, .hlm

~ l fU6K'Vin3l Lea:J Mc<Jel '1'6'9Cln "1.1 8l.1IJ1 1 • fc:Astr t ut1on f'rJD. lor MuI·.1111e Rur.sl

=· f ile Qutp.,: ~- !:id,

75

60

X

oL ___________ ...L_ =.:==~-------------------------------0

Cutofl =S.000 ~fllll GSU = UiUU

Ru11 I "Allov..: 1 4.,11 z •. ,1e 3 5.125

ConcC111lr1lon 237.000 2:31.000 23'.000

10

8le1olll Pb Cenc [1,19'dl J

12 " " 11

M~dla Clloke = SOIL t.g..: i.t11,n!le = U u r Uesign&ted: Ag~ Vi!· f l m onths H11•Mn l'lt : H,.!':l"Ntl'l

20

NlM

m IEUBKwm32 lf'ad Modf'I Venlon 1.1 8ulkl11 (Dlstr1but,on Proh for MultJple RWIS)

: L; file Qucput Y- l:itlP

75

50

25

, L ____________ _j_=:::::==~----------------------0

Cutoff : 10.000 pg/di GSO • 1.600

Run• "AbOVfl I 4.99) 2 5.014 l 5.0lS

Concenlralion 735.000 736.000 737.000

12 15 18

Blood Pb Cone (pgldl.J

21 " " Media Choice : SOIL Age Range • Us er Designated: Ages 12 • 71 months Run Mode : Research

JD

D X

Documents

Colorado Smelter Lead Consultation Technical Review workgroup … · 2018. 8. 1. · Land Use: The Community Properties (OU1) portion of the site consists of about 2400 parcels within