Portland City Code ch. 14

Citation: Portland City Code ch. 14
Parent Document: Portland City Code ch. 14
Jurisdiction: Portland (municipal)
Original Source: https://www.portlandmaine.gov/asset/ae8cabd1-66eb-4a1c-9224-92bbca5e792f ↗

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stream, or the upland edge of a wetland, except 1. Mulching and revegetation of disturbed
to allow for the development of permitted soil.
uses. Tree removal in conjunction with the 2. Temporary runoff control features such as
development of permitted uses shall be hay bales, silt fencing, or diversion ditches.
included in the 40% calculation. For the 3. Permanent stabilization structures such as
purposes of these standards, volume may be retaining walls or riprap.
considered to be equivalent to basal area. In no B. In order to create the least potential for
event shall cleared openings for any purpose, erosion, development shall be designed to fit
including but not limited to, principal and with the topography and soils of the site. Areas
accessory structures, driveways, lawns, and of steep slopes where high cuts and fills may be
sewage disposal areas, exceed in the aggregate required shall be avoided wherever possible,
25% percent of the lot area within the and natural contours shall be followed as
Shoreland Zone, including land previously closely as possible.
cleared. C. Erosion and sedimentation control measures
H. Legally existing nonconforming cleared shall apply to all aspects of the proposed
openings may be maintained but shall not be project involving land disturbance and shall be
enlarged, except as allowed by this article. in operation during all stages of the activity.
I. Fields and other cleared openings which have The amount of exposed ground area at every
reverted to primarily shrubs, trees, or other phase of construction shall be minimized to
woody vegetation shall be regulated under the reduce the potential for erosion.
provisions of this subsection. D. Any exposed ground area shall be temporarily
or permanently stabilized within one week from
11.4.4 Erosion and sedimentation control the time it was last actively worked, by use of
A. All activities which involve filling, grading, riprap, sod, seed, and mulch, or other effective
excavation or other similar activities which measures. In all cases, permanent stabilization
result in unstabilized soil conditions and which shall occur within nine months of initial
require a permit shall require a written soil exposure. The following standards shall also be
erosion and sedimentation control plan in met:
accordance with Maine Erosion and Sediment 1. Where mulch is used, it shall be applied at
Control Handbook for Construction: Best a rate of at least one bale per 500 square
Management Practices, published by the feet and shall be maintained until a catch
Cumberland County Soil and Water of vegetation is established.
Conservation District and the Maine 2. Anchoring the mulch with netting, peg, and
Department of Environmental Protection and twine or other suitable method may be
the City of Portland Technical Manual. The plan required to maintain the mulch cover.
shall be submitted to the Building Authority for 3. Additional measures shall be taken where
approval and shall include, where applicable, necessary in order to avoid siltation into
provisions for: CITY OF PORTLAND LAND USE CODE | 11-5 SHORELAND ZONE

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