The Express -Two critical state agencies are seeking volunteers for this year’s Great American Cleanup of Pennsylvania, a campaign of statewide community cleanup activities that runs through May 31. We’re talking about the Pennsylvania Department of Transportation and Department of Environmental Protection. Groups participating in PennDOT’s Adopt-A-Highway (AAH) program, which involves volunteers cleaning roadsides year-round, are also encouraged to take part in the campaign. PennDOT Secretary Leslie S. Richards said the agency is thankful “for the thousands who share our desire to keep Pennsylvania beautiful.”