MARCELLUS/UTICA REGION: Pittsburgh cosponsors U.S. Conference of Mayors resolution calling on cities to divest from fossil fuels; 3 workers test positive at Shell construction site this month; RTC Partners completes investment in Hull & Associates; OTHER U.S. REGIONS: Which version of Hickenlooper will emerge in the general election?; NATIONAL: July bidweek gas reaches lowest levels of the year as production stabilizes.