Colo. Rev. Stat. § 3-1-121
The consent of the state of Colorado is hereby given to the purchase by the United States, for the enlargement of the military reservation of Fort Logan in the county of Arapahoe in this state, of the west half of the northeast quarter of the southwest quarter of section five and north half of section seven, all in township five south, range sixty-eight west, of the sixth principal meridian, containing about three hundred and forty acres; and exclusive jurisdiction is ceded thereover for all purposes whatsoever; and the consent of the state of Colorado is further given to the purchase by the United States, for the purpose of a target range for Fort Logan, Colorado, of the east half of section twenty and all of section twenty-nine, township six south, range sixty-six west, of the sixth principal meridian in the county of Douglas in this state, containing an area of about nine hundred and sixty acres; and exclusive jurisdiction is ceded thereover for all purposes whatsoever; but the consent and cessions herein given are subject to the reservation by the state of jurisdiction to serve the civil process of state, county, and municipal courts and tribunals within said lands; and to serve and execute thereon process in criminal cases by the state, county, and municipal officers in respect to offenses, misdemeanors, crimes, and felonious acts committed outside of said tract.
C.R.S. § 3-1-121