federal auditors, and others would again examine the cemetery's books in June 2012 to verify that funds are properly spent and accounted for. A Government Accountability Office report released the same day found that Arlington officials had made "major improvements" to strategic planning, technology infrastructure, and workforce management. While the report said that there were still problems and that transferring operation of the cemetery to the U.S. Department of Veterans Affairs was still a possibility, the GAO recommended that any transfer would be quite costly and that the Army should be given time to continue to make improvements at Arlington before any decision was made. 2011 infrastructure investigation As part of the ongoing investigation into the cemetery's mismanagement, the United States Army Corps of Engineers conducted a comprehensive investigation of Arlington's buildings, facilities, infrastructure, roads, and other systems between July 2010 and June 2011. The Corps discovered that, for roughly the past 20 years, ANC managers conducted maintenance and repair only when systems were on the verge of "catastrophic failure". This diverted funds away from a preventive maintenance program, which was never implemented. Critical infrastructure problems uncovered included: Inadequate clean water systems for the Visitors Center. Clean water pipes were too small and not strong enough to supply enough water at high pressure to the facility during times of high usage (such as the summer tourist season). A storm drainage system more than 50 years old. From 60 to 75 percent of manholes and pipes were completely broken, cracked or damaged, or filled partially or completely with plant roots or silt. Cemetery management abandoned utility lines in place rather than require utility companies to remove old lines. This left extensive electric, fiber optic communications, natural gas, telephone, sewer, and clean water systems buried throughout the cemetery (and sometimes above-ground). It was no longer clear which utility lines were functional and which had been abandoned, nor where the abandoned underground lines were. Lack of follow-up on storm drainage and underground utilities assessments. Although cemetery management conducted assessments of these systems, the studies were infrequently and inconsistently acted on. A poorly constructed and maintained road network. Poor construction methods included low quality sub-bases and improperly placed or missing curbs. It was not clear from the records that the roads were constructed to accommodate the medium or heavy vehicles which often used them. Maintenance issues included extensively cracked road surfaces. In some cases,