### UNITED STATES ENVIRONMENTAL PROTECTION AGENCY

REGION VII 901 NORTH 5TH STREET KANSAS CITY, KANSAS 66101


### September 23, 2011
Thomas P Richter 4388 Mason Street Omaha, Nebraska 68105

RE: SAID: 21179 4388 Mason Street Lead-Based Paint (LBP) Assessment

Dear Owner/Resident: A Lead Based Paint assessment was recently performed on your property by the U.S. Environmental Protection Agency as part of the Omaha Lead site investigation. The purpose of this assessment is to determine whether a significant quantity of LBP is present on the exterior surface of structures, where deteriorating paint conditions (peeling, flaking, cracking, etc) exist that might increase lead concentrations in the yard above acceptable levels. Enclosed are the LBP assessment sheets for 4388 Mason Street. The EPA has developed paint stabilization eligibility criteria that involve measuring the amount of deteriorated LBP on a structure and calculating the concentration of lead in soils around the home that would result if all of the identified deteriorated paint were to fall to the ground and uniformly mix with the soil under certain assumptions. During the LBP assessment, the areal extent of the deteriorated paint observed on structure surfaces was estimated and the lead content in the deteriorated paint was measured using an X-Ray Fluorescence instrument. The data obtained during the LBP assessment was used to estimate the increase in soil lead concentration that would result if all of the deteriorating paint identified in the assessment were to fall to the ground and mix with surface soil within six feet of the foundation of the structure. For purposes of this calculation, the deteriorating LBP on a structure is assumed to fall onto the ground surface within six feet of the foundation and be uniformly mixed with the top one inch of soil. The estimated lead concentration in the soil potentially caused by the deteriorating LBP provides a measure of the severity of LBP deterioration on individual structures. The EPA uses these criteria to rank properties based on the potential for recontamination of soil to occur. Paint stabilization is being offered at only those households with the most severe LBP problems, particularly where children under the age of seven reside.
The LBP assessment performed by the EPA using the above criteria indicated that your house IS NOT eligible for paint stabilization.

### If you have any questions or concerns, please contact the EPA Public Information Center at (402) 731-3045. Sincerely,

Pauletta R. France-Isetts Project Coordinator Environmental Protection Agency

Enclosures Para información en español, llame al EPA Information Center (402) 731-3045.

# 4 Omaha Lead Site North Arrow Address: 4388 MASON ST 

### Site Sketch

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### LBP Assessment Phone:H ALT

- Plan View


### - lnd~cate number of stories and perimeter dimensions of structure Indicate regions of deterioration and describe (Deter~orat~on and/or peelmg) could ~nclude surfaces that are worn due to frlcbon, check~ng, crackmg and flak~ng, all~gator~ng bl~ster~ng

### - - 

### Omaha Lead Site LBP Assessment

LEGEND: H


### - N 

## - P 

## - 01 

## - 21179 Samples Analyzed 1 ~BVlDNumber L Sample Number XRF Unit: 2 Book 101
1-hnaterlal P = Pant Date 6 

## - \6. 08 Time 

### /*:/5

1- Slde of Strudure N = North S =South E = East W = West staff: 

## HH in€S 

# 1 Structure Type H = House G = Garage S = Shed F = Fence Sample Number Lead Loading StructurelFeature Substrate Color Deteriorated (Window, s~ding, porch, etc.) (Wood, concrete, etc) Area

H



### - - P - 09-21179 mg/cm2 ' ftl

H--P- 11 -21179 mg/crn2 ft2

- 

## -- - P

- - 21 179 mg/crn2 ft2



## -- P

- - 21 179 mgicm2 ft2

e! LBF-I 1 Prmed .I/Zb2(I?X 15 26 3.1 1144711 01 i