From Church Hill to Richmond’s North Side and now to the city’s South Side, Latoya Avent has crisscrossed Richmond to find a home that doesn’t have a lead paint problem. “We just moved on June 1 because of lead,“ Avent said. Testing last month showed her 3-year-old daughter’s blood lead level was elevated. At 24 micrograms per deciliter of blood, it was more than twice the limit of 10.