We are an industry of abbreviations and acronyms. The terms we use on a daily basis can sometimes hold a general or broad meaning in our minds, but the actual definition of these terms may leave us slightly confused!
To ease the confusion, Troy Brockbank our Design Manager has collected the top terms used at Stormwater360.
TSS – Total Suspended Solids
LL – Lid Level
IL – Invert Level
RL – Reduced Level
FSL – Finished Surface Level
TWL – Tailwater level
WQV or Vwq – Water Quality Volume
TP10 – Auckland Council’s Technical Publication 10 - Stormwater management devices: Design guidelines manual 2003
RMA - Resource Management Act 1991
LID – Low impact design
WSD – Water Sensitive Design
BMP – Best Management Practice
ALWP – Auckland Council Regional Plan: Air, Land and Water
SW360 – Stormwater360
GPT - Gross Pollutant Trap
NDC – Network Discharge Consent
GIS – Geographical Information System
Vff – First Flush Volume
Qwq or WQq – Water quality flow
TP108 - Auckland Councils Technical Publication 108: Guidelines for stormwater runoff modelling in the Auckland region
WWDG –Christchurch City Councils Waterways, Wetland, Drainage Guide
SCS - Soil Conservation Service (developer of the runoff curve number)
CN – Curve Number
HSG – Hydrological Soil Group
IDF – Intensity Duration Frequency Curve
HGL – Hydraulic Grade Line
O&M – Operation & Maintenance
MH - Manhole
WSDOE – Washington State Department of Ecology
NJCAT – New Jersey Corporation of Advanced Technologies
NJDEP – New Jersey Department of Environmental Protection
FAWB – Facility for Advanced Water Biofiltration
TPH – Total Petroleum Hydrocarbon
PDEP – Proprietary Device Evaluation Protocol
PSD – Particle Size Distribution
ANZEEC - Australian and New Zealand Environment and Conservation Council
PAUP – Proposed Auckland Unitary Plan