Erosion and Sediment Pollution Control Program Manual.pdf

Previously Mined Area -----1. Any area that has been subject to surface or underground mining
activity, 2. A grayfield.
Principal Spillway -----The primary system used to dewater a sediment basin or dam at predetermined
rates in a staged fashion.
Proctor Curve -----Curve showing the relationship between the density and water content of soil for a
given compaction.
Profile -----A representation of an object or structure seen from the side along its length.
Project Applicant -----A person who has filed or intends to file an application for a permit, approval, or
authorization that DEP is authorized to issue under any of the environmental statutes that DEP
implements.
Project Name -----The name by which a project is or will be known.
Project Site -----The entire area of activity, development, lease, or sale including:
(i) The area of an earth disturbance activity.
(ii) The area planned for an earth disturbance activity.
(iii) Other areas that are not subject to an earth disturbance activity.
Protective Lining -----Materials placed within a water conveyance or impoundment structure to prevent
accelerated erosion.
Public Comment Period -----The time allotted for citizens to express views and concerns regarding an
action proposed by a government agency, such as rulemaking, issuing permits. Etc.
Pump-around System -----A method of working within a watercourse wherein base flow is captured
upstream of the work area and pumped to a suitable stabilized discharge point downstream of
the work area.
Pumped Water Filter Bag -----A bag manufactured from filter fabric and used to filter water pumped
from a disturbed area prior to discharging it to Surface waters.
Pumping Test -----A test that is conducted to determine aquifer or well characteristics, typically the
change in hydraulic head while pumping over time.
Pure Live Seed -----The product of the percentage of pure seed times the percentage of germination
divided by 100. For example, [85% pure seed X 72% germination rate] 100 = 61% PLS.
Purveyor -----Supplier.
PVC -----Polyvinyl Chloride, which is a type of plastic commonly used in pipe and some geotextiles.
PWRP -----PA Wetland Replacement Project.
Pyrite -----A yellowish mineral, iron disulfide, FeS2, generally metallic in appearance. Commonly
referred to as fool’s gold..
Q
Q -----Symbol of quantity of flow, usually given in cfs.
Quad Map -----Topographic map of a 7 ½ minute quadrangle published by the USGS.
Quadrangle -----A 4-sided area, bounded by parallels of latitude and meridians of longitude used as an
area unit of mapping, typically in 7 ½ minutes but sometimes in 15 or 30 minutes.
Quicklime -----See lime.
R
R, or r -----Symbol for hydraulic radius.
Rainfall Duration -----The period of time during which rainfall occurs, exceeds a given intensity, or
maintains a given intensity.
Rainfall Frequency -----The frequency, usually expressed in years, at which a given rainfall intensity
and duration can be expected to be equaled or exceeded.
Rainfall Intensity -----In the Rational Equation, it is the rate of rainfall in inches per hour.
Light Rain: < 0.10 in/hr.
Moderate Rain: 0.11 to 0.30 in/hr.
Heavy Rain: > 0.30 in/hr.
363-2134-008 / March 31, 2012 / Page 540