### UNITED STATES ENVIRONMENTAL PROTECTION AGENCY REGION VII 901 NORTH 5TH STREET KANSAS CITY, KANSAS 66101 

### September 23, 2011 Lois M Engman 4247 Mason Street Omaha, Nebraska 68105
RE: SAID: 21056 4247 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 4247 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.

### Omaha Lead Site Address: 4247-MASON ST Site Sketch



### - LBP Assessment Phone: H (402) 551 9392 ALT Plan View 

## - lndicate number of stories and perimeter dimensions of structure lndicate reqions of deterioration and describe (Detenorat~on could Include surfaces that are worn due to fnct~on, checking crack~ng and flak~ng allgatonng bl~stenng and/or peelrig)

### - - Omaha Lead 

### Site LBP 

### Assessment
LEGEND: H-N-P-01-21056 Samples Analyzed IBVID Nunber

Matenal P = Palnt of Structure N = North S = South E = East W = West
Samp e Number Lead Loadlng StructureIFeature Substrate Color Deterlorated ~Wtndaw ndng porch etc ) (Wood concrete etc ) Area H-&-P-01-21056 

## l(j5 mgcn? I
H 

# -,@! P - 02 

### - 21056 I~~CITY 

### &v/'rtSeC (~/0a9(1 

## L~A 

# -? ft2 H 

# &- P-03-21056
H 

# -6 P


### - 04 

### - 21056 H 

# -&- P


### - 05 

### - 21 056

H P 

## - 09 

### - 21056 mg~cm' fta H 

### - - P


### - 10 

### - 21056 ms/cn? ft2 H---P-11 -21056 ms/cn? ft2



### -- P

- - 2 I 056 rngicn? ftl