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 

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 could ~nclude surfaces that are worn due to frlcbon, check~ng, crackmg and flak~ng, all~gator~ng bl~ster~ng and/or peelmg) 

- - 

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