A.
Word usage.
(1)
Words used in the present tense include the future tense; the singular number includes the plural, and the plural number includes the singular; words of masculine gender include feminine gender; and words of feminine gender include masculine gender.
(2)
The word "includes" or "including" shall not limit the term to the specific example but is intended to extend its meaning to all other instances of like kind and character.
(3)
The words "shall" and "must" are mandatory; the words "may" and "should" are permissive.
B. AGRICULTURAL ACTIVITY APPLICANT BEST MANAGEMENT PRACTICE (BMP) CONSERVATION DISTRICT DEP DESIGN STORM DETENTION VOLUME DEVELOPMENT SITE (SITE) DISTURBED AREA EARTH DISTURBANCE ACTIVITY EROSION EXISTING CONDITION FEMA FLOODPLAIN FLOODWAY FOREST MANAGEMENT/TIMBER OPERATIONS GREEN INFRASTRUCTURE HYDROLOGIC SOIL GROUP (HSG) IMPERVIOUS SURFACE (IMPERVIOUS AREA) KARST LAND DEVELOPMENT (DEVELOPMENT) LOW-IMPACT DEVELOPMENT (LID) MUNICIPALITY NPDES NRCS PEAK DISCHARGE PERVIOUS AREA PROJECT SITE QUALIFIED PROFESSIONAL REGULATED ACTIVITIES REGULATED EARTH DISTURBANCE ACTIVITY RETENTION VOLUME/REMOVED RUNOFF RETURN PERIOD RIPARIAN BUFFER RUNOFF SEDIMENT STATE WATER QUALITY REQUIREMENTS STORMWATER STORMWATER MANAGEMENT FACILITY STORMWATER MANAGEMENT SITE PLAN SUBDIVISION USDA WATERS OF THE COMMONWEALTH WATERSHED WETLAND
Definitions. For the purposes of this article, certain terms and words used herein shall be interpreted as follows. These definitions do not necessarily reflect the definitions contained in pertinent regulations or statutes, and are intended for interpretation of this article only.
Activities associated with agriculture such as agricultural cultivation, agricultural operation, and animal heavy use areas. This includes the work of producing crops including tillage, land clearing, plowing, disking, harrowing, planting, harvesting crops or pasturing and raising of livestock and installation of conservation measures. Construction of new buildings or impervious area is not considered an agricultural activity.
A landowner, developer, or other person who has filed an application to the municipality for approval to engage in any regulated activity at a project site within the municipality.
Activities, facilities, measures, planning or procedures used to minimize accelerated erosion and sedimentation and manage stormwater to protect, maintain, reclaim, and restore the quality of waters and the existing and designated uses of waters within this commonwealth before, during, and after earth disturbance activities related to regulated activities, to meet state water quality requirements, to promote groundwater recharge, and to otherwise meet the purposes of this subarticle. Stormwater BMPs are commonly grouped into one of two broad categories or measures: "structural" or "nonstructural." In this article, nonstructural BMPs or measures refer to operational and/or behavior-related practices that attempt to minimize the contact of pollutants with stormwater runoff, whereas structural BMPs or measures are those that consist of a physical device or practice that is installed to capture, manage and treat stormwater runoff. Structural BMPs include, but are not limited to, a wide variety of practices and devices, from large-scale retention ponds and constructed wetlands, to small-scale underground treatment systems, infiltration facilities, filter strips, low impact design, bioretention, wet ponds, permeable paving, grassed swales, riparian or forested buffers, sand filters, detention basins, and manufactured devices. Structural stormwater BMPs are permanent appurtenances to the project site.
A conservation district, as defined in Section 3(c) of the Conservation District Law [3 P.S. § 851(c)] that has the authority under a delegation agreement executed with DEP to administer and enforce all or a portion of the regulations promulgated under 25 Pa. Code, Chapter 102, also being the Clinton County Conservation District.
The Pennsylvania Department of Environmental Protection.
The magnitude and temporal distribution of precipitation from a storm event measured in probability of occurrence (e.g., a five-year storm) and duration (e.g., 24 hours) used in the design and evaluation of stormwater management systems. Also see "return period."
The volume of runoff that is captured and released into the waters of the commonwealth at a controlled rate.
See "project site."
An unstabilized land area where an earth disturbance activity is occurring or has occurred.
A construction or other human activity which disturbs the surface of the land, including, but not limited to: grubbing; grading; excavation; embankments; road maintenance; building construction; and the moving, depositing, stockpiling, or storing of soil, rock or earth materials.
The natural process by which the surface of the land is worn away by water, wind or chemical action.
The dominant land cover during the five-year period immediately preceding a proposed regulated activity.
Federal Emergency Management Agency.
Any land area susceptible to inundation by water from any natural source or delineated by applicable FEMA maps and studies as being a special flood hazard area (SFHA).
The channel of the watercourse and those portions of the adjoining floodplains that are reasonably required to carry and discharge the 100-year flood. Unless otherwise specified, the boundary of the floodway is as indicated on maps and flood insurance studies provided by FEMA. In an area where no FEMA maps or studies have defined the boundary of the 100-year floodway, it is assumed, absent evidence to the contrary, that the floodway extends from the stream to 50 feet from the top of the bank of the stream.
Planning and activities necessary for the management of forested land. These include conducting a timber inventory, preparation of forest management plans, silvicultural treatment, cutting budgets, logging road design and construction, timber harvesting, site preparation, and reforestation.
Systems and practices that use or mimic natural processes to infiltrate, evapotranspire or reuse stormwater on the site where it is generated.
Infiltration rates of soils vary widely and are affected by subsurface permeability as well as surface intake rates. Soils are classified into four HSGs (A, B, C, and D) according to their minimum infiltration rate, which is obtained for bare soil after prolonged wetting. The NRCS defines the four groups and provides a list of most of the soils in the United States and their group classification. The soils in the area of the development site may be identified from a soil survey report that can be obtained from local NRCS offices or conservation district offices. Soils become less pervious as the HSG varies from A to D.
A surface that prevents the infiltration of water into the ground. Impervious surfaces (or areas) shall include, but not be limited to: roofs, additional indoor living spaces, patios, decks which prevent infiltration of rainfall, garages, storage sheds and similar structures, parking, driveway areas and any new streets or sidewalks.
A type of topography or landscape characterized by surface depressions, sinkholes, rock pinnacles/uneven bedrock surface, underground drainage, and caves. Karst is formed over limestone, dolomite, gypsum or other calcareous bedrock by solution of the material by water.
Inclusive of any or all of the following meanings:
Site design approaches and small-scale stormwater management practices that promote the use of natural systems for infiltration, evapotranspiration, and reuse of rainwater. LID can be applied to new development, urban retrofits and revitalization projects. LID utilizes design techniques that infiltrate, filter, evaporate and store runoff close to its source. Rather than rely on costly large-scale conveyance and treatment systems, LID addresses stormwater through a variety of small, cost-effective landscape features located on-site.
The City of Lock Haven, Clinton County, Pennsylvania.
National Pollution Discharge Elimination System.
The USDA Natural Resources Conservation Service.
The maximum rate of stormwater runoff from a specific storm event.
Any area not defined as an impervious surface or area.
The specific area of land where any regulated activities in the municipality are planned, conducted, or maintained.
Any person licensed by the Pennsylvania Department of State or otherwise qualified by law to perform the work required by this article.
Any earth disturbance activities or any activities that involve the alteration or development of land in a manner that may affect stormwater runoff.
Activity involving earth disturbance subject to regulation under 25 Pa. Code, Chapter 92, 25 Pa. Code, Chapter 102 or the Clean Streams Law.[2]
The volume of runoff that is captured and not released directly into the surface waters of this commonwealth during or after a storm event.
The average interval, in years, within which a storm event of a given magnitude can be expected to occur one time. For example, the twenty-five-year return period rainfall would be expected to occur on average once every 25 years; or stated in another way, the probability of a twenty-five-year storm occurring in any one year is 0.04 (i.e., a 4% chance).
A permanent area of trees and shrubs located adjacent to streams, lakes, ponds and wetlands.
Any part of precipitation that flows over the land.
Soils or other materials transported by surface water as a product of erosion.
The regulatory requirements to protect, maintain, reclaim, and restore water quality under Title 25 (Environmental Protection) of the Pennsylvania Code and the Clean Streams Law.
Runoff from the surface of the land resulting from precipitation or snow or ice melt.
Any structure, natural or man-made, that, due to its condition, design, or construction, conveys, stores, or otherwise affects stormwater runoff. Typical stormwater management facilities include, but are not limited to: detention and retention basins; open channels; storm sewers; pipes; and infiltration facilities.
The plan prepared by the developer or their representative indicating how stormwater runoff will be managed at the development site in accordance with this article. The stormwater management site plan will be designated as SWM site plan throughout this article.
As defined in the Pennsylvania Municipalities Planning Code, Act of July 31, 1968, P.L. 805, No. 247.[3]
United States Department of Agriculture.
Any and all rivers, streams, creeks, rivulets, impoundments, ditches, watercourses, storm sewers, lakes, dammed water, wetlands, ponds, springs, and all other bodies or channels of conveyance of surface and underground water, or parts thereof, whether natural or artificial, within or on the boundaries of the Commonwealth of Pennsylvania.
Region or area drained by a river, watercourse, or other surface water of the commonwealth.
Areas that are inundated or saturated by surface or groundwater at a frequency and duration sufficient to support, and that under normal circumstances do support, a prevalence of vegetation typically adapted for life in saturated soil conditions, including swamps, marshes, bogs and similar areas.