on market conditions) to power turbines to produce its own energy. The final cost of this energy independence could be as much as $90 million, but it is hoped to pay for itself with the savings earned—with conservative estimates at $18 million annually—within several years. Also, whatever excess power generated after satisfying the community's needs will be sold back to the electrical grid, adding another source of income for RiverBay. In September 2007, a report by the New York Inspector General, Kristine Hamann, charged that the Division of Housing and Community Renewal (DHCR), which is responsible for overseeing Mitchell-Lama developments, was negligent in its duties to supervise the contracting, financial reporting, budgeting and the enforcement of regulations in Co-op City (and other M-L participants) during the period of January 2003 to October 2006. The report also chided Marion Scott management for trying to influence the RiverBay Board by financing election candidates and providing jobs and sports tickets to Board members and their family/friends—all violations of DHCR and/or RiverBay regulations. The DHCR was instructed to overhaul its system of oversight to better protect the residents and taxpayer money. In October 2007, a former board president, Iris Herskowitz Baez, and a former painting contractor, Nickhoulas Vitale, pleaded guilty to involvement in a kickback scheme. While on the RiverBay Board, Baez steered $3.5 million in subsidized painting contracts for needed work in Co-op City apartments, to Vitale's company, Stadium Interior Painting, in exchange for $100,000 in taxpayer money. Herskowitz Baez was sentenced to 6 months in jail and 12 months' probation and given a $10,000 fine in March 2008. 2010s to present During January 2015, an outbreak of Legionnaires' disease sickened 8 people near Co-op City's cooling towers. Twelve people were diagnosed with Legionnaires' disease between December 2014 and the end of the outbreak in January 2015. Another outbreak of Legionnaires' disease in 2018 sickened three people, one of whom died. As a result of the continued presence of the amusement park zoning lot at Bartow and Baychester Avenues, there were no restrictions on the heights of signs on that lot. In late 2017, the site's owner began erecting tall LED billboards on the lot, a move opposed by Co-op City residents since one of the billboards faced Co-op City, keeping residents awake at night. The following year, residents proposed changing the lot's zoning to a standard commercial use. A tall wind turbine