Administrative Rules of Montana › Department 17 - ENVIRONMENTAL QUALITY › Chapter 17.36 - SUBDIVISIONS/ON-SITE SUBSURFACE WASTEWATER TREATMENT › Subchapter 17.36.1 - Subdivision Application and Review › Rule 17.36.104 - APPLICATION-LOT LAYOUT DOCUMENT

Current through Register Vol. 13, July 5, 2024
(1) The
				applicant shall provide lot layout documents for the subdivision application.
				At least one copy of the lot layout must be submitted with the subdivision
				application. Prior to final approval, four copies of the final lot layout must
				be submitted. The lot layout documents must be on sheets no larger than 11" x
				17", at a scale no smaller than 1" = 200'. The reviewing authority may require
				a larger scale if needed to enhance readability. Multiple sheets may be used
				for large developments, provided that individual lots are not split across two
				sheets. If multiple sheets are used, a single sheet must also be provided,
				using an appropriate scale, that shows the entire development.
(2) The following information must be
				provided on the lot layout documents. Other information (e.g., percolation test
				results, soil profile descriptions) may be included on the lot layout documents
				only if the documents remain legible:
(a) the
				name of the subdivision, and the county, section, township and range (e.g.,
				"Sec. 12 T27N R6E") in which the subdivision is located;
(b) a north arrow and scale;
(c) the boundaries, dimensions, and total
				area of each lot;
(d) an identifier
				or number for each lot (e.g., "Lot 1, Lot 2," "Tract 1, Tract 2," or "Parcel 1,
				Parcel 2");
(e) locations of
				existing and proposed easements;
(f) locations of existing and proposed roads
				and utilities;
(g) locations of
				drainageways;
(h) name and
				affiliation of the person who prepared the lot layout;
(i) information as set out in Table 1 for the
				specific water supply, wastewater, and storm water facilities in the
				subdivision, and those located within 100 feet of the perimeter of the
				subdivision or parcel. All systems must be labeled as "existing" or "proposed."
				For individual and shared systems, the locations and design details do not have
				to be shown on the lot layout if those details will not be determined until the
				time of septic permitting.
TABLE 1
REQUIREMENTS FOR LOT LAYOUTS
Subdivisions served by nonmunicipal wells
Subdivisions served by nonmunicipal wastewater
							 systems
Subdivisions served by municipal water or municipal
							 sewer systems
Existing wells and proposed well locations or
							 approved drilling areas, setbacks in ARM 17.36.323 Table 2, and features listed
							 in ARM 17.36.103(1)(d) within 100 feet of the subdivision
X
X
X
Water lines (suction and pressure)
X
Water lines (extension and connections)
X
X
X
Existing and proposed wastewater systems (drainfield,
							 replacement area, and existing septic tanks)
X
X
Existing and proposed gray water irrigation
							 systems
X
X
X
Percent and direction of slope across the
							 drainfield
X
X
Sewer lines (extensions and connections)
X
X
X
Lakes, springs, irrigation ditches, wetlands and
							 streams
X
X
Percolation test locations, if provided, keyed to
							 result form
X
Soil pit locations keyed to soil profile
							 descriptions
X
Ground water monitoring wells keyed to monitoring
							 results form
X
X
X
Floodplain boundaries
X
X
X
Cisterns
X
X
X
Existing and proposed building locations
X
X
X
Driveways
X
X
X
Road cuts and escarpments or slopes > 25%
X
Mixing zone boundaries and direction of ground water
							 flow
X
X
Locations, sizes, and design details of proposed
							 storm water facilities
X
X
X
Locations and sizes of existing storm water
							 facilities
X
X
X