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194 <br /> S. POTENTIAL FOR HUMAN EXPOSURE <br /> 210 µg/g, and 160 µg/g, respectively; comparable samples taken from the smaller city of Rochester, Manning 1 <br /> Minnesota showed that the median soil lead concentrations did not exceed 100 ug/g at any location tested nning a <br /> (Mielke et al. 1989). The Minneapolis data showed that average lead levels were elevated in soil samples ;•bree-piec <br /> taken from the foundations of homes, but that lead levels were low (<50 µg/g) in areas where children �me hou. <br /> could be expected to play such as parks that were located away from traffic but were higher in play areas g/g, whet <br /> around private residences. Soil samples taken from around the foundations of homes with painted exteriors Iig/g (Cap <br /> had the highest lead levels (mean concentrations of 522 µg/g) but levels around homes composed of brick !)pm in 1 <br /> or stucco were significantly lower (mean concentration 158 ug/g) (Schmitt et al. 1988). Severely ncentrat <br /> contaminated soils were located near house foundations adjacent to private dwellings with exterior lead- 10026 µg <br /> based paint, at levels up to 20,136 ug/g. Elevated soil lead concentrations were found in larger urban areas tdditionai <br /> with 27%-, 26%-, 32%, and 42% of the soil samples exceeding 300 µg/g lead in Duluth, inner-city North � be app <br /> Minneapolis, inner-city St. Paul, and inner-city South Minneapolis, respectively. Only 5% of the soil itmospher <br /> samples taken from the smaller urban areas of Rochester and St. Cloud, Minnesota, had lead levels iniptake frc <br /> excess of 150 µg/g. It is suggested that the higher lead levels associated with soils taken from around 11d kitche <br /> painted homes in the inner city are the result of greater atmospheric lead content, resulting from the <br /> burning of leaded gasoline in cars and the washdown of building surfaces to which the small lead particles 1,ead may <br /> adhere by rain (Mielke et al. 1989). pntained <br /> ip to 32 <br /> In the state of Maine, soil samples taken from areas of high risk (within 1-2 feet of a foundation of a 162 µg/L <br /> building more than 30 years old) indicated that 37% of the samples had high lead concentrations iJute from <br /> (>1,000 µg/g). Forty-four percent of the private dwellings had high lead levels in the soil adjacent to thense from <br /> foundation,whereas only 10% of the public locations (playgrounds, parks, etc.) did. In addition, the largest :Ilum 1991 <br /> percentage (54%) of highly contaminated soil was found surrounding homes built prior to 1950, whereas <br /> homes built after 1978 did not have any lead contamination in the soil (Krueger and Duguay 1989). In laking pa <br /> the Cincinnati prospective lead study of public and private low- and moderate-income housing, the lead tteriorate <br /> concentration ranges were as follows: painted interior walls, 0.1-35 mg/cm2; interior home surface dust, ithese he <br /> 0.04-39 mg/m2 and 72-16,200 µg/g; interior home dustfall, 0.0040-60 mg/m2/30 days; exterior dust ems) (Bo <br /> scrapings, 20-108,000 µg/g; and dust on children's hands, 1-191 µg, with the lead levels in older private 3chips of <br /> deteriorating or dilapidated housing being higher than the levels in newer public and rehabilitated housing ould prov <br /> (Clark et al. 1985). tween 4( <br /> a exposed <br /> 5.4.4. Other Environmental Media <br /> d is al <br /> Lead has been detected in a variety of foods. Typical concentrations of lead in various foods are (EPA proximat <br /> 1986a): <br /> es of►e< <br /> Food group Concentration (ug/g) ade in sti: <br /> 12 samp <br /> Dairy products 0.003-0.083 f 5.3 mg/L <br /> Meat, fish, and poultry 0.002-0.159 ring gun <br /> Grain and cereal products 0.002-0.136 1 animals <br /> Vegetables 0.005-0.649 ohnson ai <br /> Fruit and fruit juices 0.005-0.223 <br /> Oils, fats, and shortenings 0.002-0.028 1972, ho <br /> Sugar and adjuncts 0.006-0.073 emit 1,0 <br /> Beverages 0.002-0.041 (µg/L) distances <br />