Pleasanton's affordable housing dilemma is expected heat up in 60 days after the state returns the city's list of possible sites that could be rezoned to house nearly 2,000 new homes. Eighty percent or more would be reserved for either low- or very low-income households. The City Council voted Tuesday to send a draft of its housing element plan, which includes a list of 17 possible sites throughout the city, to the state Department of Housing and Community Development for comments and approval. Pleasanton agreed to update its housing element and plan for 1,992 more housing units -- of which...