[Ord. 2013-499, 7/10/2013]
1. 
For the purposes of this Chapter, certain terms and words used herein shall be interpreted as follows:
A. 
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.
B. 
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.
C. 
The words "shall" and "must" are mandatory; the words "may" and "should" are permissive.
D. 
The words "used or occupied" include the words "intended, designed, maintained or arranged to be used or occupied.
2. 
As used in this chapter, the following terms shall have the meanings indicated:
ACCELERATED EROSION
The removal of the surface of the land through the combined action of human activities and the natural processes, at a rate greater than would occur because of the natural process alone.
AGRICULTURAL ACTIVITY
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 the pasturing and raising of livestock and installation of conservation measures. Construction of new buildings or impervious area is not considered an agricultural activity.
APPLICANT
A landowner, developer or other person who has filed an application for approval to engage in any regulated activity at a project site in the Borough.
BEST MANAGEMENT PRACTICE OPERATION AND MAINTENANCE PLAN
Documentation, included as part of a drainage plan, detailing the proposed BMPs, how they will be operated and maintained and who will be responsible for long-term maintenance.
BMPs (BEST MANAGEMENT PRACTICES)
Activities, facilities, designs, measures or procedures used to manage stormwater impacts from regulated activities, to meet Pennsylvania water quality requirements, to promote groundwater recharge, and to otherwise meet the purposes of this Chapter. Stormwater BMPs are commonly grouped into one of two broad categories or measures: "structural" or "nonstructural." In this Chapter, 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 practices that are installed to capture and treat stormwater runoff. Structural BMPs include, but are not limited to, a wide variety of practices and devices, from retention ponds and constructed wetlands, to underground treatment systems, infiltration facilities, filter strips, low-impact design, bioretention, wet ponds, permeable paving, vegetated swales, riparian or forested buffers, sand filters, and detention basins. Structural stormwater BMPs are permanent appurtenances to the project site.
BIORETENTION AREA
Stormwater management measure which involves the shallow, temporary ponding of stormwater runoff in areas with well-drained soils and native vegetation.
BOROUGH
The Borough of Red Hill, Montgomery County, Pennsylvania.
COUNTY CONSERVATION DISTRICT
The Montgomery County Conservation District.
DEDICATION
The deliberate donation of property by its owner for public use.
DEP
The Pennsylvania Department of Environmental Protection.
DESIGN STORM
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."
DETENTION BASIN
A stormwater management structure with a controlled release rate which is essentially dry while not receiving stormwater.
DEVELOPER
Any landowner, agent of such landowner, or tenant with the permission of such landowner who makes or causes to be made a subdivision of land or a land development.
DEVELOPMENT
See "earth disturbance activity." The term includes redevelopment.
DEVELOPMENT SITE
The specific tract of land where any earth disturbance activities in the Borough are planned, conducted or maintained.
DRAINAGE EASEMENT
A right granted by a landowner to a grantee, including an association, allowing the use of private land for stormwater management purposes.
DRAINAGE FACILITY
Any ditch, pipe, culvert, storm sewer, stream, channel, swale, conduit or other structure or feature designed, intended or constructed for the purpose of diverting or carrying surface water.
DRAINAGE PLAN
A plan documenting the proposed stormwater management quantity and quality management controls to be used for a given development site, including a BMP operation and maintenance plan.
EARTH DISTURBANCE ACTIVITY
A construction or other human activity which disturbs the surface of the land, including, but not limited to, clearing and grubbing, grading, excavations, embankments, road maintenance, building construction and the moving, depositing, stockpiling, or storing of soil, rock or earth materials, excluding agricultural activities.
EASEMENT
A vested or acquired legal right to use land other than as a tenant, for a specific purpose, such right being held by someone other than the owner who holds title to the land.
ENGINEER
A professional engineer licensed as such in the Commonwealth of Pennsylvania.
EROSION
The natural process by which the surface of the land is worn away by water, wind, ice or chemical action.
EROSION AND SEDIMENT CONTROL PLAN
A plan for a project site designed to prevent on-site accelerated erosion and off-site sedimentation through the use of vegetative or mechanical controls, including BMPs. Control measures must be designed to fit the topography, soils, rainfall and land use of the area they are to protect.
FOREST MANAGEMENT/TIMBER OPERATIONS
Planning and activities necessary for the management of forestland. 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.
GROUNDWATER
The water beneath the surface of the ground, the source of water in springs, wells and base flow in streams.
GROUNDWATER RECHARGE
Replenishment of underground water supplies beneath the ground surface.
HYDROLOGIC SOIL GROUP (HSG)
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) to indicate the minimum infiltration rates, which are obtained for bare soil after prolonged wetting. The Natural Resources Conservation Service (NRCS) of the U.S. Department of Agriculture 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.
IMPERVIOUS SURFACE (AREA)
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, garages, storage sheds and similar structures, and any new streets or sidewalks. Decks, parking areas and driveway areas are counted as impervious areas if they do not allow for infiltration.
IMPOUNDMENT
A body of water, such as a pond, lake, dam, retention or detention basin designed to manage stormwater runoff by retaining it or releasing it at a controlled rate.
KARST
A type of topography or landscape characterized by surface depressions, sinkholes, rock pinnacles/uneven bedrock surface, underground drainage, and caves. Karst is formed on carbonate rocks, such as limestone or dolomite.
LAND DEVELOPMENT
Inclusive of any or all of the following meanings when used in this Chapter.
A. 
The improvement of one lot or two or more contiguous lots, tracts or parcels of land for any purpose involving a) a group of two or more buildings or b) the division or allocation of land or space between or among two or more existing or prospective occupants by means of, or for the purpose of, streets, common areas, leaseholds, condominiums, building groups or other features;
B. 
Any subdivision of land;
C. 
Development in accordance with Section 503(1.1) of the Pennsylvania Municipalities Planning Code.[1]
LOCAL RUNOFF CONVEYANCE FACILITIES
Any natural channel or man-made conveyance system which has the purpose of transporting runoff from the site to the mainstem or its tributaries.
MAINSTEM (MAIN CHANNEL)
Any stream segment or other conveyance used as a reach in the Macoby Creek hydrologic model.
MAINTENANCE GUARANTEE
Security in a form in accord with the provisions set forth in the Municipalities Planning Code as amended, which insures the structural integrity of the improvements as well as the functioning of said improvements in accordance with the design and specifications as depicted on the final plat for a period not to exceed 18 months after the acceptance of said improvements by the Red Hill Borough Council, public utility, or municipal authority.
MUNICIPALITIES PLANNING CODE
The Pennsylvania Municipalities Planning Code, Act of July 31, 1968, P.L. 805, No. 247, as reenacted and amended December 21, 1988; P.L. 1329, No. 170, as amended.[2]
MUNICIPAL SEPARATE STORM SEWER SYSTEM (MS4)
As defined in 25 Pa. Code § 92a.2.
NPDES
National Pollutant Discharge Elimination System, the federal government's system for issuance of permits under the Clean Water Act, which is delegated to DEP in Pennsylvania.
OUTFALL
"Point source" as described in 40 CFR 122.2, and the point where the Borough's storm sewer system discharges to surface waters of the Commonwealth.
PERFORMANCE GUARANTEE
Financial security in a form that complies with the provisions set forth in the Municipalities Planning Code, as amended, to guarantee the proper construction and installation of improvements by the developer in accordance with approved plans and specifications as a condition for the approval of the plan.
PERSON
An individual, partnership, unincorporated association, corporation, whether public or private, governmental unit, public utility or other legal entity recognized by law.
POINT SOURCE
Any discernible, confined and discrete conveyance, including, but not limited to, any pipe, ditch, channel, tunnel, or conduit from which stormwater is or may be discharged, as defined in state regulations at 25 Pa. Code § 92a.2.
PROJECT SITE
The specific area of land where any regulated activities in the Borough are planned, conducted or maintained.
QUALIFIED PERSON or QUALIFIED PROFESSIONAL
Any person licensed by the Pennsylvania Department of State or otherwise qualified by law to perform the work required by this Chapter.
REDEVELOPMENT
Earth disturbance activities on land which has previously been disturbed or developed.
REGULATED ACTIVITY
Any earth disturbance activities or any activities that involve the alteration or development of land in a manner that may affect stormwater runoff.
REGULATED EARTH DISTURBANCE ACTIVITY
Activity involving earth disturbance subject to regulation under 25 Pa. Code Chapter 92a, 25 Pa. Code Chapter 102 or the Clean Streams Law.
RELEASE RATE
The percentage of the predevelopment peak rate of runoff for a development site to which the post-development peak rate of runoff must be controlled to avoid peak flow increases throughout the watershed.
RETENTION BASIN
A stormwater management structure with a controlled release rate which maintains a constant water level while not receiving stormwater.
RETURN PERIOD
The average interval in years over which an event of a given magnitude can be expected to recur. For example, the twenty-five-year return period rainfall or runoff event would be expected to recur on the average once every 25 years.
ROAD MAINTENANCE
Earth disturbance activities within the existing road cross section, such as grading and repairing existing unpaved road surfaces, cutting road banks, cleaning or clearing drainage ditches and other similar activities.
RUNOFF
Any part of precipitation that flows over land.
SEDIMENT
For purposes of this Chapter, solid material, both mineral and organic, that is in suspension, is being transported or has been moved from its site of origin or has been deposited by water.
SEDIMENTATION
The process by which mineral or organic matter is accumulated or deposited by moving wind, water, or gravity. Once this matter is deposited (or remains suspended in water), it is usually referred to as "sediment."
SEPARATE STORM SEWER SYSTEM
A conveyance or system of conveyances (including roads with drainage systems) used for collecting and conveying stormwater runoff.
SHEET FLOW
Stormwater runoff flowing in a thin layer over the ground surface.
SPILL PREVENTION AND RESPONSE PLAN
A program that identifies procedures for preventing and, as needed, cleaning up potential spills, makes such procedures known and makes the necessary equipment available to appropriate personnel.
STATE WATER QUALITY REQUIREMENTS
The regulatory requirements to protect, maintain, reclaim and restore water quality under Title 25 of the Pennsylvania Code and the Clean Streams Law.
STORM DRAINAGE SYSTEMS
All facilities and features, such as pipes, culverts, open channels, ditches, swales, and stormwater detention facilities, used to transmit or temporarily store surface water runoff.
STORM SEWER
A system of pipes or other conduits that carry intercepted surface runoff, street water and other wash waters or drainage, but excludes domestic sewage and industrial waste.
STORMWATER
The surface runoff generated by precipitation, snow or ice melt, reaching the ground surface.
STORMWATER DETENTION FACILITIES
Basins, ponds, ponding areas, depressions or other structures or features used to temporarily store rainfall and release it at a controlled rate.
STORMWATER FILTERS
Any number of structural mechanisms, including, but not limited to, multichamber catch basins, sand/peat filters, and sand filters, which are installed to intercept stormwater flow and remove pollutants prior to discharge. Typically, these systems require periodic maintenance and cleanout.
STORMWATER MANAGEMENT SITE PLAN
For purposes of this Chapter, the plan prepared by the developer or his representative indicating how stormwater runoff will be managed at the development site in accordance with this Chapter (also sometimes referred to as "SWM site plan" in this Chapter).
STORMWATER MANAGEMENT WATERSHED PLAN
A plan for managing stormwater runoff adopted by Montgomery County pursuant to the Pennsylvania Storm Water Management Act, P.L. 864 (Act 167 of 1978), as amended.[3]
STREAM
A watercourse.
STREAM BUFFER
A zone of variable width located along a stream that is vegetated and is designed to filter pollutants from runoff.
SUBAREA
The smallest unit of watershed breakdown for hydrologic modeling purposes for which the runoff control criteria have been established in the stormwater management plan.
SURFACE WATERS OF THE COMMONWEALTH (ALSO KNOWN AS "WATERS OF THE COMMONWEALTH")
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 this Commonwealth.
SURVEYOR
A licensed land surveyor, registered as such in the Commonwealth of Pennsylvania, and competent in profession as established under the Pennsylvania Engineer, Land Surveyor, and Geologist Registration Act.[4]
SWALE
A low-lying stretch of natural or man-made land which gathers or carries surface water runoff. See also "vegetated swale."
TRASH/DEBRIS COLLECTORS
Racks, screens or other similar devices installed in a storm drainage system to capture coarse pollutants (e.g., trash, leaves).
VEGETATED SWALES
A. 
Vegetated earthen channels designed to convey stormwater. These swales are not considered to be water quality BMPs.
B. 
Broad, shallow, densely vegetated, earthen channels designed to treat stormwater while slowly infiltrating, evapotranspirating, and conveying it. Swales should be gently sloping with low flow velocities to prevent erosion. Check dams may be added to enhance performance.
WATERCOURSE
For purposes of this Chapter, a channel or conveyance of surface water, such as a stream or creek, having defined bed and banks, whether natural or artificial, with perennial or intermittent flow.
WATER QUALITY INSERTS
Any number of commercially available devices that are inserted into storm inlets to capture sediment, oil, grease, metals, trash, and debris.
WATERSHED
Region or area drained by a river, watercourse or other surface water of this Commonwealth. Red Hill Borough is located in the Upper Perkiomen Watershed.
[1]
Editor's Note: See 53 P.S. § 10503(1.1).
[2]
Editor's Note: See 53 P.S. § 10101 et seq.
[3]
Editor's Note: See 32 P.S. § 680.1 et seq.
[4]
Editor's Note: See 63 P.S. § 148 et seq.