Implemented SCMs (Points), 2020-2024
Shows the locations of Stormwater Control Measures (SCMs) that were implemented as a condition of National Pollutant Discharge Elimination System (NPDES) and Erosion and Sediment Control General Permit (ESCGP) permits within Allegheny County, PA. Specifically, this layer consists of SCMs best represented by points and associated with constructed permits that were terminated by the Allegheny County Conservation District (ACCD) between 2020 and 2024. Features were digitized using paper and/or digital as-built plan drawings, where available, received as part of the Notice of Termination (NOT) submission process. SCM data was obtained from submitted NOT forms which are also required as part of this submission. Construction of SCMs are often required by NPDES and ESCGP permits to manage excess stormwater, created by increased impervious area, by treating rate, volume, and/or water quality.
Data Dictionary
Column | Type | Label | Përshkrimi |
---|---|---|---|
identifier | text | SCM ID | Internal identifier for the SCM |
practice | text | SCM Type | Type of SCM |
status | text | Current status of permit. Possible values; Active, Complete, Pending or Expired. |
|
municipali | text | Municipality | The municipality within which the SCM centroid exists |
address | text | Street address | Building number and street. When a structure is demolished the county removes the building number. The structure technically has no address at that point. These properties have a building number of zero. |
plannedon | text | Approval Date | Date the SCM's permit was issued |
plannedon_ | text | Approval Date Sort | Date column meant to be used to sort the "Approval Date" dates, displayed in YYYYMMDD format |
implemen_1 | numeric | Implemented Date Sort | Date column meant to be used to sort the "Implemented Date" dates, displayed in YYYYMMDD format |
Acres_Trea | numeric | Acres Treated | Total acres treated by the SCM or group of SCMs, as indicated on the NOT form |
Is_RC | text | Rate Control? | Was the SCM or group of SCMs designed for Rate Control, as indicated on the NOT form |
Is_VC | text | Volume Control? | Was the SCM or group of SCMs designed for Volume Control, as indicated on the NOT form |
Is_WQ | text | Water Quality? | Was the SCM or group of SCMs designed to treat Water Quality, as indicated on the NOT form |
Quantity | numeric | Quantity | Number of SCMs comprising the feature, as indicated on the NOT form. Multiple SCMs of the same type are reported as one feature on the NOT form, with cumulative metrics. |
Implem_On | timestamp | Implemented Date | Date the SCM's permit was terminated by ACCD |
VolumeTrea | numeric | Volume Treated | The volume of stormwater (in cubic feet) that the SCM or group of SCMs is designed to remove during the 2-year storm event |
Informata shtesë
Fusha | Vlera |
---|---|
Data last updated | 10 korrik 2025 |
Metadata last updated | 10 korrik 2025 |
U krijua | 7 dhjetor 2023 |
Formati | CSV |
Licenca | Creative Commons Attribution Share-Alike |
Datastore active | True |
Has views | True |
Hash | ba7501be2526b73bf5f03134c1ccadb6 |
Id | f99b34bc-7ac0-4658-b5ba-c0626c245ce5 |
Mimetype | text/csv |
Package id | c925a742-96bc-4323-99fd-98ff8d446695 |
Position | 3 |
Size | 11,4 KiB |
State | active |
Url type | upload |