Md. Code, Environment § 9–516

(a) This section applies only in Montgomery County and Prince George’s County.

(b) 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.

(c) 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:

(1) Requesting information or assistance under this section;

(2) Responding to the request; and

(3) Setting a reasonable timetable for response to a request.

(d) 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:

(1) Engineering;

(2) Design;

(3) Present and future capacities;

(4) Available service projections;

(5) Fiscal elements; and

(6) Annual revisions of this information.

(e) The Maryland-National Capital Park and Planning Commission shall provide any requested information to each county as to:

(1) Population;

(2) Growth projections;

(3) Planning factors; and

(4) Other developmental standards.