Colo. Rev. Stat. § 30-5-171
Except for those portions that became part of the city and county of Broomfield on November 15, 2001, in accordance with sections 10 to 13 of article XX of the state constitution, beginning at the intersection of the west line of range sixty-eight west with the base line; thence north on said range line to its intersection with the north line of township four north; thence east on said township line to its intersection with the west line of range sixty-seven west; thence north on said range line to its intersection with the north boundary line of Colorado; thence east along said north boundary line to its intersection with the west line of range fifty-five west; thence south on said range line to the southeast corner of township nine north, range fifty-six west; thence west on the south line of said township and range to the northeast corner of township eight north, range fifty-six west; thence south on the west line of range fifty-five west to its intersection with the north line of township six north; thence west on said township line to its intersection with the west line of range sixty west; thence south on said range line to the southeast corner of township five north, range sixty-one west; thence west on the south line of said township and range to the northeast corner of township four north, range sixty-one west; thence south on the east line of range sixty-one west to its intersection with the base line; and thence west on the base line to the place of beginning. Said public land survey lines are based upon the sixth principal meridian.
C.R.S. § 30-5-171