Section 101-8.310 - New construction(a)Design and construction. Each facility or part of a facility constructed by, on behalf of, or for the use of a recipient shall be designed and constructed in a manner that the facility or part of the facility is readily accessible to, and usable by, handicapped persons, if the construction began after the effective date of this subpart.(b)Alteration. Each facility or part of a facility which is altered by, on behalf of, or for the use of a recipient after the effective date of this subpart in a manner that affects or could affect the usability of the facility or part of the facility shall, to the maximum extent feasible, be altered in a manner that the altered portion of the facility is readily accessible to and usable by handicapped persons.(c)GSA Accessibility Standard. Design, construction, or alteration of facilities shall be in conformance with the "GSA Accessibility Standard," PBS (PCD): DG6, October 14, 1980. A copy of the standard can be obtained through the Business Service Centers, General Services Administration, National Capital Region, 7th and D Streets, SW., Washington, DC 20407 or Regional Business Service Centers, Region 1, John W. McCormack, Post Office and Courthouse, Boston, Massachusetts 02109; Region 2, 26 Federal Plaza, New York, New York 10007; Region 3, Ninth and Market Streets, Philadelphia, Pennsylvania 19107; Region 4, 75 Spring Street, SW., Atlanta, Georgia 30303; Region 5, 230 South Dearborn, Chicago, Illinois 60604; Region 6, 1500 East Bannister Road, Kansas City, Missouri 64131; Region 7, 819 Taylor Street, Fort Worth, Texas 76102; Region 8, Building 41, Denver Federal Center, Denver, Colorado 80225; Region 9, 525 Market Street, San Francisco, California 94105; Region 10, GSA Center, Auburn, Washington 98002. In cases of practical difficulty, unnecessary hardship, or extreme differences, exceptions may be granted from the literal requirements of the above-mentioned standard, as defined in §§ 101-19.604 and 101-19.605 ("Exceptions" and "Waiver or modification of standards"), but only when it is clearly evident that equal facilitation and protection are thereby secured.