D.C. Mun. Regs. r. 1-1416
No person shall operate a motor vehicle on the property while under the influence of alcoholic beverages, narcotics, marijuana, barbiturates, or amphetamines.
No person, under the influence of, or using, or possessing, any narcotic drug, hallucinogen, marijuana, barbiturates, or amphetamines shall enter or remain on the property. This prohibition shall not apply in cases where a drug is being used by an individual as prescribed by a licensed physician.
No person shall use alcoholic beverages on the property, except upon occasions when the responsible agency head or designee grants an exemption.
No person carrying or possessing firearms, other dangerous or deadly weapons, explosives or items intended to be used to fabricate an explosive or incendiary device, shall enter or remain on the property.
D.C. Mun. Regs. r. 1-1416