waterresources.saccounty.net

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Definitions (18)

1

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Best management practices


Good housekeeping solutions that include the proper handling, storage, and disposal of toxic materials to prevent stormwater pollution.
Source: waterresources.saccounty.net

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catch basin


Curbside opening that collects rainwater from streets and serves as an entry point to the storm drain system.
Source: waterresources.saccounty.net

3

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First flush


The first big rain after an extended dry period (usually summer) which flushes out the accumulated pollutants in the storm drain system and carries them straight to the creeks and rivers.
Source: waterresources.saccounty.net

4

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Flood control channel


The open portion (often concrete-lined) of the storm drain system.
Source: waterresources.saccounty.net

5

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Gutter


The edge of a street (below the curb) designed to drain water runoff from streets, driveways, parking lots, etc. into storm drain inlets.
Source: waterresources.saccounty.net

6

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Household Hazardous Waste


Common everyday products that people use in and around their homes-including paint, paint thinner, herbicides, and pesticides-that, due to their chemical nature, can be hazardous if not properly disposed.
Source: waterresources.saccounty.net

7

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household hazardous waste


Common everyday products that people use in and around their homes-including paint, paint thinner, herbicides, and pesticides-that, due to their chemical nature, can be hazardous if not properly disposed.
Source: waterresources.saccounty.net

8

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Illegal discharge


The release or placement of any material into the County stormwater conveyance system which is not authorized by the County.
Source: waterresources.saccounty.net

9

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Illicit connection


Any connection to the storm drain system that is not permitted: or any legitimate connection that is used for illegal discharge.
Source: waterresources.saccounty.net

10

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non-point source pollution


Pollution that does not come from a single, identifiable source. Includes materials that wash from roofs, streets, yards, driveways, sidewalks and other land areas - largest contributor of stormwater pollution.
Source: waterresources.saccounty.net


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