Table of Content
Appendix A - Alternative To 30% Expansion Rule
Appendix B - Significant river segments identified
TABLE 1. LAND USES IN THE SHORELAND ZONE
Land Uses
| SP | RP | LR | LC | GD | ||
| 1 | Non-intensive recreational uses not requiring structures such as, hunting, fishing, hiking | Yes | Yes | Yes | Yes | Yes |
| 2 | Motorized vehicular traffic on roads & trails & snowmobiling | Yes | Yes | Yes | Yes | Yes |
| 3 | Forest management activities except for timber harvesting | Yes | Yes | Yes | Yes | Yes |
| 4 | Timber harvesting | Yes | CEO-1 | Yes | Yes | Yes |
| 5 | Fire prevention activities | Yes | Yes | Yes | Yes | Yes |
| 6 | Wildlife management practices | Yes | Yes | Yes | Yes | Yes |
| 7 | Wildlife Soil & water conservation | Yes | Yes | Yes | Yes | Yes |
| 8 | Mineral exploration | No | Yes-2 | Yes-2 | Yes-2 | Yes-2 |
| 9 | Surveying & resource analysis | Yes | Yes | Yes | Yes | Yes |
| 10 | Emergency operations | Yes | Yes | Yes | Yes | Yes |
| 11 | Harvesting of wild crops | Yes | Yes | Yes | Yes | Yes |
| 12 | Agriculture | Yes | PB | Yes | Yes | Yes |
| 13 | Principle structures | |||||
| a | One & Two Family Residential dwelling unit | PB-4 | No | CEO | CEO | CEO |
| b | Commercial structures | PB-4 | No | No | PB | PB |
| c | Industrial structures | PB-4 | No | No | PB | PB |
| d | Multi-unit-residential | No | No | No | PB | PB |
| e | Governmental& Institutional | No | No | No | PB | PB |
| 14 | Structures accessory to Permitted uses | PB | PB-4 | CEO | CEO | Yes |
| 15 | Road& driveway construction | PB | No-8 | PB | PB | PB |
| 16 | Small non-residential facilities for educational, scientific or nature interpretation purposes | PB-4 | PB | CEO | CEO | CEO |
| 17 | Public& private parks & recreation areas involving minimal structural development | PB | PB | PB | CEO | CEO |
| 18 | Campgrounds | No | No-7 | PB | PB | PB |
| 19 | Piers, dock, wharves, breakwaters, causeways, marinas, bridges over 20 ft. in length, & uses projecting into water bodies | |||||
| a | Temporary | CEO | CEO | CEO | CEO | CEO |
| b | Permanent | PB | PB | PB | PB> | PB |
| 20 | Clearing for approved construction | CEO | CEO-1 | Yes | Yes | Yes |
| 21 | Essential services accessory to permitted uses | PB-6 | PB-6 | PB | PB | PB |
| 22 | Private sewage disposal systems for permitted uses | LPI | No | LPI | LPI | LPI |
| 23 | Public utilities, including sewage collection & treatment facilities | PB | PB | PB | PB | PB |
| 24 | Signs | Yes | Yes | Yes | Yes | Yes |
| 25 | Filling or other earthmoving activity of less than 10 cubic yards | CEO | CEO | Yes | Yes | Yes |
| 26 | Filling or other earthmoving activity of more than 10 cubic yards | PB | PB | CEO | CEO | CEO |
| 27 | Uses similar permitted uses | CEO | CEO | CEO | CEO | CEO |
| 28 | Uses similar to those requiring a CEO permit | CEO | CEO | CEO | CEO | CEO |
| 29 | Uses similar to those requiring a PB permit | PB | PB | PB | PB | PB |
| 30 | Mineral extraction including sand & gravel extraction | No | PB-3 | PB | PB | PB |
| 31 | Aquaculture | PB | PB | Yes | Yes | Yes |
| 32 | Conversions of seasonal residences to year—round residences | LPI | No | LPI | LPI | LPI |
| 33 | Home occupations | PB | No | PB | CEO | Yes |
| 34 | Individual, private campsites | CEO | CEO | CEO | CEO | CEO |
| 35 | Parking facilities | No | No-7 | PB | PB | PB |
| Minimum LotArea (sq. ft.) | Minimum Shore Frontage (ft.) | |||
| (1) | (a) | Residential per dwelling unit | ||
| (i) | Within the Shoreland Zone Adjacent to Tidal Areas | 30,000 | 150 | |
| (ii) | Within the Shoreland Zone Adjacent to Non-Tidal Areas | 40,000 | 200 | |
| (b) | Governmental, Institutional, Commercial or Industrial per principal structure | |||
| (i) | Within the Shoreland Zone Adjacent to Tidal Areas, Exclusive of Those Areas Zoned for Commercial Fisheries and Maritime Activity | 40,000 | 200 | |
| (ii) | Within the Shoreland Zone Adjacent to Tidal Areas Zoned for Commercial Fisheries and Maritime Activities | 40,000 | 200 | |
| (iii) | Within the Shoreland Zone Adjacent to Non-tidal Areas | 60,000 | 300 | |
| (c) | Public and Private Recreational Facilities | |||
| (i) |
Within the Shoreland Zone Adjacent to Tidal and Non-Tidal Areas |
40,000 | 200 | |
| (2) | Land below the normal high-water line of a water body or upland edge of a wetland and land beneath roads serving more than two(2) lots shall not be included toward calculating minimum lot area. | |||
| (3) | Lots located on opposite sides of a public or private road shall be considered each a separate tract or parcel of land unless such road was established by the owner of land on both sides thereof after September 22, 1971. | |||
| (4) | The minimum width of any portion of any lot within one hundred (100) feet, horizontal distance, of the normal high-water line of a water body or upland edge of a wetland shall be equal to or greater than the shore frontage requirement for a lot with the proposed use. | |||
| (5) | If more than one residential dwelling unit, principal governmental, institutional, commercial or industrial structure or use, or combination thereof, is constructed or established on a single parcel, all dimensional requirements shall be met for each additional dwelling unit, principal structure, or use. | |||
| Grade; | Spacing |
| (Percent) | (Feet) |
| 0-2 | 250 |
| 3-5 | 200-135 |
| 6-10 | 100-80 |
| 11-15 | 80-60 |
| 16-20 | 60-45 |
| 21 + | 40 |
1 Shoreline integrity and sedimentation. Persons conducting timber harvesting and related activities must take reasonable measures to avoid the disruption of shoreline integrity, the occurrence of sedimentation of water, and the disturbance of water body and tributary stream banks, water body and tributary stream channels, shorelines, and soil lying within water bodies, tributary streams and wetlands. If, despite such precautions, the disruption of shoreline integrity, sedimentation of water, or the disturbance of water body and tributary stream banks, water body and tributary stream channels, shorelines, and soil lying within water bodies, tributary streams and wetlands occurs, such conditions must be corrected.
2 Slash treatment. Timber harvesting and related activities shall be conducted such that slash or debris is not left below the normal high-water line of any water body or tributary stream, or the upland edge of a wetland. Section 15(O-1)(2) does not apply to minor, incidental amounts of slash that result from timber harvesting and related activities otherwise conducted in compliance with this section.
(a) Slash actively used to protect soil from disturbance by equipment or to stabilize exposed soil, may be left in place, provided that no part thereof extends more than 4 feet above the ground.
(b) Adjacent to great ponds, rivers and wetlands:
(i) No accumulation of slash shall be left within 50 feet, horizontal distance, of the normal high-water line or upland edge of a wetland; and
(ii) Between 50 feet and 250 feet, horizontal distance, of the normal high-water line or upland edge of a wetland, all slash larger than 3 inches in diameter must be disposed of in such a manner that no part thereof extends more than 4 feet above the ground.
(3) Timber harvesting and related activities must leave adequate tree cover and shall be conducted so that a well-distributed stand of trees is retained. This requirement may be satisfied by following one of the following three options:
(a) Option 1 (40% volume removal), as follows:
(i) Harvesting of no more than 40 percent of the total volume on each acre of trees 4.5 inches DBH or greater in any 10 year period is allowed. Volume may be considered to be equivalent to basal area;
(ii) A well-distributed stand of trees which is windfirm, and other vegetation including existing ground cover, must be maintained; and,
(iii) Within 75 feet, horizontal distance, of the normal high-water line of rivers, streams, and great ponds, and within 75 feet, horizontal distance, of the upland edge of a freshwater or coastal wetlands, there must be no cleared openings. At distances greater than 75 feet, horizontal distance, of the normal high-water line of a river or great pond or upland edge of a wetland, timber harvesting and related activities must not create single cleared openings greater than 14,000 square feet in the forest canopy. Where such openings exceed 10,000 square feet, they must be at least 100 feet, horizontal distance, apart. Such cleared openings will be included in the calculation of total volume removal. Volume may be considered equivalent to basal area.
(b) Option 2 (60 square foot basal area retention), as follows:
(i) The residual stand must contain an average basal area of at least 60 square feet per acre of woody vegetation greater than or equal to 1.0 inch DBH, of which 40 square feet per acre must be greater than or equal to 4.5 inches DBH;
(ii) A well-distributed stand of trees which is windfirm, and other vegetation including existing ground cover, must be maintained; and,
(iii) Within 75 feet, horizontal distance, of the normal high-water line of water bodies and within 75 feet, horizontal distance, of the upland edge of wetlands, there must be no cleared openings. At distances greater than 75 feet, horizontal distance, of the normal high-water line of a river or great pond, or upland edge of a wetland, timber harvesting and related activities must not create single cleared openings greater than 14,000 square feet in the forest canopy. Where such openings exceed 10,000 square feet, they must be at least 100 feet, horizontal distance, apart. Such cleared openings will be included in the calculation of the average basal area. Volume may be considered equivalent to basal area.
(c) Option 3 (Outcome based), which requires: An alternative method proposed in an application, signed by a Licensed Forester or certified wildlife professional, submitted by the landowner or designated agent to the State of Maine Department of Conservation’s Bureau of Forestry (Bureau) for review and approval, which provides equal or better protection of the shoreland area than this rule.
Landowners must designate on the Forest Operations Notification form required
by 12 M.R.S.A. chapter 805, subchapter 5 which option they choose to use. If
landowners choose Option 1 or Option 2, compliance will be determined solely
on the criteria for the option chosen. If landowners choose Option 3, timber
harvesting and related activities may not begin until the Bureau has approved
the alternative method.
The Bureau may verify that adequate tree cover and a well-distributed stand of
trees is retained through a field procedure that uses sample plots that are
located randomly or systematically to provide a fair representation of the
harvest area.
(4) Skid trails, yards, and equipment operation. This requirement applies to the construction, maintenance, and use of skid trails and yards in shoreland areas.
(a) Equipment used in timber harvesting and related activities shall not use river, stream or tributary stream channels as travel routes except when surface waters are frozen and snow covered, and the activity will not result in any ground disturbance.
(b) Skid trails and yards must be designed and constructed to prevent sediment and concentrated water runoff from entering a water body, tributary stream, or wetland. Upon termination of their use, skid trails and yards must be stabilized.
(c) Setbacks:
(i) Equipment must be operated to avoid the exposure of mineral soil within 25 feet, horizontal distance, of any water body, tributary stream, or wetland. On slopes of 10 percent or greater, the setback for equipment operation must be increased by 20 feet, horizontal distance, plus an additional 10 feet, horizontal distance, for each 5 percent increase in slope above 10 percent. Where slopes fall away from the resource, no increase in the 25-foot setback is required.
(ii) Where such setbacks are impracticable, appropriate techniques shall be used to avoid sedimentation of the water body, tributary stream or wetland. Such techniques may include the installation of sump holes or settling basins, and/or the effective use of additional ditch relief culverts and ditch water turnouts placed to avoid sedimentation of the water body, tributary stream, or wetland. If, despite such precautions, sedimentation or the disruption of shoreline integrity occurs, such conditions must be corrected.
(5) Land Management Roads. Land management roads, including approaches to crossings of water bodies, tributary stream channels, and freshwater wetlands, ditches and other related structures, must be designed, constructed, and maintained to prevent sediment and concentrated water runoff from directly entering the water body, tributary stream or wetland. Surface water on or adjacent to water crossing approaches must be diverted through vegetative filter strips to avoid sedimentation of the watercourse or wetland. Because roadside ditches may not extend to the resource being crossed, vegetative filter strips must be established in accordance with the setback requirements in Section 15(O-1)(7) of this rule.
(a) Land management roads and associated ditches, excavation, and fill must be set back at least:
(i) 100 feet, horizontal distance, from the normal high-water line of a great pond, river or freshwater or coastal wetland;
(ii) 50 feet, horizontal distance, from the normal high-water line of streams; and
(iii) 25 feet, horizontal distance, from the normal high-water line of tributary streams
(b) The minimum 100 foot setback specified in Section 15(O-1)(5)(a)(i) above may be reduced to no less than 75 feet, horizontal distance, and the 50 foot setback specified in Section 15(O-1)(5)(a)(ii) above may be reduced to no less than 25 feet, horizontal distance, if, prior to construction, the landowner or the landowner’s designated agent demonstrates to the Planning Board’s satisfaction that no reasonable alternative exists and that appropriate techniques will be used to prevent sedimentation of the water body, tributary stream, or wetland. Such techniques may include, but are not limited to, the installation of settling basins, and/or the effective use of additional ditch relief culverts and turnouts placed to avoid sedimentation of the water body, tributary stream or wetland. If, despite such precautions, sedimentation or the disruption of shoreline integrity occurs, such conditions must be corrected.
(c) On slopes of 10 percent or greater, the land management road setback must be increased by at least 20 feet, horizontal distance, plus an additional 10 feet, horizontal distance, for each 5 percent increase in slope above 10 percent.
(d) New land management roads are not allowed within the shoreland area along Significant River Segments as identified in 38 M.R.S.A. section 437, nor in a Resource Protection District, unless, prior to construction, the landowner or the landowner’s designated agent makes a clear demonstration to the Planning Board’s satisfaction that no reasonable alternative route exists outside the shoreland zone, and that the new road must be set back as far as practicable from the normal high-water line and screened from the river by existing vegetation.
(e) Ditches, culverts, bridges, dips, water turnouts and other water control installations associated with roads must be maintained on a regular basis to assure effective functioning. Drainage structures shall deliver a dispersed flow of water into an unscarified filter strp no less than the width indicated in the setback requirements in Section 15(O-1)(7). Where such a filter strip is impractible, appropriate techniques shall be used to avoid sedimentation of the water body, tributary stream, or wetland. Such techniques may include the installation of sump holes or settling basins and/or the effective use of additional ditch relief culverts and ditch water turnouts placed to avoid sedimentation of the water body, tributary stream, or wetland. If, despite such precautions, sedimentation or the disruption of shoreline integrity occurs, such conditions must be corrected.
(f) Road closeout and discontinuance. Maintenance of the water control installations required in Section 15(O-1)(5)(e) must continue until use of the road is discontinued and the road is put to bed by effective installation of water bars or other adequate road drainage structures at appropriate intervals, constructed to avoid surface water flowing over or under the water bar, and extending a sufficient distance beyond the traveled way so that water does not reenter the road surface.
(g) Upgrading existing roads. Extension or enlargement of presently existing roads must conform to the provisions of Section 15(O-1). Any nonconforming existing road may continue to exist and to be maintained, as long as the nonconforming conditions are not made more nonconforming.
(h) Exception. Extension or enlargement of presently existing roads need not conform to the setback requirements of Section 15(O-1)(5)(a) if, prior to extension or enlargement, the landowner or the landowner’s designated agent demonstrates to the Planning Board’s satisfaction that no reasonable alternative exists and that appropriate techniques will be used to prevent sedimentation of the water body, tributary stream, or wetland. Such techniques may include, but are not limited to, the installation of settling basins, and/or the effective use of additional ditch relief culverts and turnouts placed to avoid sedimentation of the water body, tributary stream, or wetland. If, despite such precautions, sedimentation or the disruption of shoreline integrity occurs, such conditions must be corrected.
(i) Additional measures. In addition to the foregoing minimum requirements, persons undertaking construction and maintenance of roads and river, stream and tributary stream crossings must take reasonable measures to avoid sedimentation of surface waters.
(6) Crossings of waterbodies. Crossings of rivers, streams, and tributary streams must allow for fish passage at all times of the year, must not impound water, and must allow for the maintenance of normal flows.
(a) Determination of flow. Provided they are properly applied and used for the circumstances for which they are designed, methods including but not limited to the following are acceptable as a means of calculating the 10 year and 25 year frequency water flows and thereby determining water crossing sizes as required in Section 15(O-1): The United States Geological Survey (USGS) Methods; specifically: Hodgkins, G. 1999. Estimating the Magnitude of Peak Flows for Streams in Maine for Selected Recurrence Intervals. U.S. Geological Survey. Water Resources Investigations Report 99-4008. 45 pp.
(b) Upgrading existing water crossings. Extension or enlargement of presently existing water crossings must conform to the provisions of Section 15(O-1). Any nonconforming existing water crossing may continue to exist and be maintained, as long as the nonconforming conditions are not made more nonconforming; however, any maintenance or repair work done below the normal high-water line must conform to the provisions of Section 15(O-1).
(c) Other Agency Permits. Any timber harvesting and related activities involving the design, construction, and maintenance of crossings on waterbodies other than a river, stream or tributary stream may require a permit from the Land Use Regulation Commission, the Department of Environmental Protection, or the US Army Corps of Engineers.
(d) Any timber harvesting and related activities involving the design, construction, and maintenance of crossings of freshwater wetlands identified by the Department of Inland Fisheries and Wildlife as essential wildlife habitat require prior consultation with the Department of Inland Fisheries and Wildlife.
(e) Notice to Bureau of Forestry. Written notice of all water crossing construction maintenance, alteration and replacement activities in shoreland areas must be given to the Bureau prior to the commencement of such activities. Such notice must contain all information required by the Bureau, including:
(i) a map showing the location of all proposed permanent crossings;
(ii) the GPS location of all proposed permanent crossings;
(iii) for any temporary or permanent crossing that requires a permit from state or federal agencies, a copy of the approved permit or permits; and
(iv) a statement signed by the responsible party that all temporary and permanent crossings will be constructed, maintained, and closed out in accordance with the requirements of this Section.
(f) Water crossing standards. All crossings of rivers require a bridge or culvert sized according to the requirements of Section 15(O-1)(6)(g)) below. Streams and tributary streams may be crossed using temporary structures that are not bridges or culverts provided:
(i) concentrated water runoff does not enter the stream or tributary stream;
(ii) sedimentation of surface waters is reasonably avoided;
(iii) there is no substantial disturbance of the bank, or stream or tributary stream channel;
(iv) fish passage is not impeded; and,
(v) water flow is not unreasonably impeded.
Subject to Section 15(O-1)(6)(f)(i-v) above, skid trail crossings of streams and tributary streams when channels of such streams and tributary streams are frozen and snow-covered or are composed of a hard surface which will not be eroded or otherwise damaged are not required to use permanent or temporary structures.
(g) Bridge and Culvert Sizing. For crossings of river, stream and tributary stream channels with a bridge or culvert, the following requirements apply:
(i) Bridges and culverts must be installed and maintained to provide an opening sufficient in size and structure to accommodate 10 year frequency water flows or with a cross-sectional area at least equal to 2 1/2 times the cross-sectional area of the river, stream, or tributary stream channel.
(ii) Temporary bridge and culvert sizes may be smaller than provided in Section 15(O-1)(6)(g)(i) if techniques are effectively employed such that in the event of culvert or bridge failure, the natural course of water flow is maintained and sedimentation of the water body or tributary stream is avoided. Such crossing structures must be at least as wide as the channel and placed above the normal high-water line. Techniques may include, but are not limited to, the effective use of any, a combination of, or all of the following:
1. use of temporary skidder bridges;
2. removing culverts prior to the onset of frozen ground conditions;
3. using water bars in conjunction with culverts;
4. using road dips in conjunction with culverts.
(iii) Culverts utilized in river, stream and tributary stream crossings must:
1. be installed at or below river, stream or tributary stream bed elevation;
2. be seated on firm ground;
3. have soil compacted at least halfway up the side of the culvert;
4. be covered by soil to a minimum depth of 1 foot or according to the culvert manufacturer's specifications, whichever is greater; and
5. have a headwall at the inlet end which is adequately stabilized by riprap or other suitable means to reasonably avoid erosion of material around the culvert.
(iv) River, stream and tributary stream crossings allowed under Section 15(O-1), but located in flood hazard areas (i.e. A zones) as identified on a community's Flood Insurance Rate Maps (FIRM) or Flood Hazard BoundaryMaps (FHBM), must be designed and constructed under the stricter standards contained in that community's National Flood Insurance Program (NFIP). For example, a water crossing may be required to pass a 100-year flood event.
(v) Exception. Skid trail crossings of tributary streams within shoreland areas and wetlands adjacent to such streams may be undertaken in a manner not in conformity with the requirements of the foregoing subsections provided persons conducting such activities take reasonable measures to avoid the disruption of shoreline integrity, the occurrence of sedimentation of water, and the disturbance of stream banks, stream channels, shorelines, and soil lying within ponds and wetlands. If, despite such precautions, the disruption of shoreline integrity, sedimentation of water, or the disturbance of stream banks, stream channels, shorelines, and soil lying within ponds and wetlands occurs, such conditions must be corrected.
(h) Skid trail closeout. Upon completion of timber harvesting and related activities, or upon the expiration of a Forest Operations Notification, whichever is earlier, the following requirements apply:
(i) Bridges and culverts installed for river, stream and tributary stream crossings by skid trails must either be removed and areas of exposed soil stabilized, or upgraded to comply with the closeout standards for land management roads in Section15(O-1)(6)(i) below.
(ii) Water crossing structures that are not bridges or culverts must either be removed immediately following timber harvesting and related activities, or, if frozen into the river, stream or tributary stream bed or bank, as soon as practical after snowmelt.
(iii) River, stream and tributary stream channels, banks and approaches to crossings of water bodies and tributary streams must be immediately stabilized on completion of harvest, or if the ground is frozen and/or snow-covered, as soon as practical after snowmelt. If, despite such precautions, sedimentation or the disruption of shoreline integrity occurs, such conditions must be corrected.
(i) Land management road closeout. Maintenance of the water control features must continue until use of the road is discontinued and the road is put to bed by taking the following actions:
(i) Effective installation of water bars or other adequate road drainage structures at appropriate intervals, constructed to reasonably avoid surface water flowing over or under the water bar, and extending sufficient distance beyond the traveled way so that water does not reenter the road surface.
(ii) Water crossing structures must be appropriately sized or dismantled and removed in a manner that reasonably avoids sedimentation of the water body or tributary stream.
(iii) Any bridge or water crossing culvert in roads to be discontinued shall satisfy one of the following requirements:
1. it shall be designed to provide an opening sufficient in size and structure to accommodate 25 year frequency water flows;
2. it shall be designed to provide an opening with a cross-sectional area at least 3 1/2 times the cross-sectional area of the river, stream or tributary stream channel; or
3. it shall be dismantled and removed in a fashion to reasonably avoid sedimentation of the river, stream or tributary stream
If, despite such precautions, sedimentation or the disruption of shoreline integrity occurs, such conditions must be corrected.
(7) Slope Table
Filter strips, skid trail setbacks, and land management road setbacks
must be maintained as specified in Section 15(O-1), but in no case
shall be less than shown in the following table.
| Average slope of land between exposed mineral soil and the shoreline (percent) | Width of strip between exposed mineral soil and shoreline (feet along surface of the ground) |
|---|---|
| 0 | 25 |
| 10 | 45 |
| 20 | 65 |
| 30 | 85 |
| 40 | 105 |
| 50 | 125 |
| 60 | 145 |
| 70 | 165 |
| Diameter of Tree at 4-1/2 feet Above Ground Level (inches) | Points |
| 2 - < 4 in. | 1 |
| 4 – < 8 in | 2 |
| 8 - < 12 in. | 4 |
| 12 in. or greater | 8 |
ALTERNATIVE TO 30% EXPANSION RULE PURSUANT TO 38 M.R.S.A. SECTION 439-A SUBSECTION 4-A
Section 12.C. Non-conforming Structures
38 §437. Significant river segments identified
For purposes of this chapter, significant river segments include the following: