This section applies only in Montgomery County and Prince George’s County. The Washington Suburban Sanitary Commission and the Maryland-National Capital Park and Planning Commission shall provide any information and assistance requested by the county council or the county executive for preparing, reviewing, adopting, revising, or amending a county plan. The county council and county executive of each county, the Washington Suburban Sanitary Commission, and the Maryland-National Capital Park and Planning Commission shall adopt procedures for: Requesting information or assistance under this section; Responding to the request; and Setting a reasonable timetable for response to a request. The Washington Suburban Sanitary Commission shall provide any requested information about the comprehensive plan for water supply systems and sewerage systems in each county as to: Engineering; Design; Present and future capacities; Available service projections; Fiscal elements; and Annual revisions of this information. The Maryland-National Capital Park and Planning Commission shall provide any requested information to each county as to: Population; Growth projections; Planning factors; and Other developmental standards.