25 07, 2019

What are polychlorinated biphenols (PCBs)?

2019-07-26T09:30:31+00:00

PCBs describe a broad range of man-made industrial products and chemicals used for hundreds of industrial and commercial products. PCBs are non-polar and are relatively insoluble in water.[v]

What are polychlorinated biphenols (PCBs)?2019-07-26T09:30:31+00:00
25 07, 2019

How do PCBs get into stormwater runoff?

2019-07-26T09:18:13+00:00

PCBs are released into the environment by the improper handling and disposal of wastes containing PCBs. Because PCBs are highly insoluble in water, they are typically transferred into aquatic and terrestrial environments through surface water flows attached solid particulate matter.[ix] Contaminated soils and debris can then be ingested by wildlife, causing bioaccumulation to be […]

How do PCBs get into stormwater runoff?2019-07-26T09:18:13+00:00
25 07, 2019

Why should PCBs be removed from industrial stormwater runoff?

2019-07-26T09:20:11+00:00

PCBs should be removed from stormwater discharge because they are highly carcinogenic. The most carcinogenic components of PCB mixtures tend to bioaccumulate in fish and other animals and bind to sediments.[vi] Humans ingest PCBs through the consumption of contaminated fish and other animals. In humans, PCBs can cause skin changes, thymus gland problems, immune deficiencies, […]

Why should PCBs be removed from industrial stormwater runoff?2019-07-26T09:20:11+00:00
25 07, 2019

How are PCBs removed from industrial stormwater runoff?

2019-07-25T13:01:52+00:00

Enhanced, passive media filtration and advanced polishing can be used to effectively remove PCBs from stormwater prior to discharge. If further reduction is necessary to remove PCBs, advanced polishing technologies can be used. Both types of BMPs combined in a treatment train will remove PCBs from stormwater prior to discharge to help facilities meet benchmarks […]

How are PCBs removed from industrial stormwater runoff?2019-07-25T13:01:52+00:00
25 07, 2019

What are pesticides?

2019-07-25T10:55:28+00:00

Pesticides are man-made substances used to control unwanted pests or vegetation. Pesticides are usually made up of a combination of active and inert chemicals and materials that can break down in the environment into substances often more toxic than the original materials. Examples of pesticides include insecticides, herbicides, fungicides, defoliants and desiccants. […]

What are pesticides?2019-07-25T10:55:28+00:00
25 07, 2019

How do pesticides get into industrial stormwater runoff?

2019-07-25T11:15:04+00:00

Pesticides get into stormwater by being dissolved or attached to soil particles and carried away in runoff. Pesticides can also enter the groundwater if the pesticide is highly water soluble and applied before a large rainfall event or regular irrigation. A form commonly found in stormwater is 2,4- Dichlorophenoxyacetic acid (2,4-D); glyphosate (Roundup). [ii] DDT […]

How do pesticides get into industrial stormwater runoff?2019-07-25T11:15:04+00:00
25 07, 2019

Why should pesticides be removed from industrial stormwater runoff?

2019-07-25T11:15:18+00:00

Pesticides should be removed from stormwater discharge because their presence in water sources can have serious, adverse effects on human health and the viability of fish and wildlife. Certain pesticides can irritate human tissue, damage the nervous, immune and endocrine (hormone) systems, increase the risk of cancer and even cause death.[iii]

Pesticides most frequently found […]

Why should pesticides be removed from industrial stormwater runoff?2019-07-25T11:15:18+00:00
25 07, 2019

How are pesticides removed from industrial stormwater runoff?

2019-07-25T11:15:31+00:00

Enhanced, passive media filtration and advanced polishing can be used to effectively remove pesticides from stormwater prior to discharge. If further reduction is necessary to remove pesticides, advanced polishing technologies can be used. Both types of BMPs combined in a treatment train will remove pesticides from stormwater prior to discharge to help facilities meet benchmarks […]

How are pesticides removed from industrial stormwater runoff?2019-07-25T11:15:31+00:00
25 07, 2019

What are nutrients?

2019-07-25T10:42:21+00:00

Nutrients in the form of nitrogen and phosphorus are naturally-occurring elements in aquatic systems. In excess, nitrogen and phosphorus can have serious negative impacts on water systems and human health.

Nitrogen is a common element in all organic materials and in many inorganic industrial chemicals. Nitrogen is found as organic nitrogen (e.g. decaying plants and animals, […]

What are nutrients?2019-07-25T10:42:21+00:00
25 07, 2019

How do nutrients get into stormwater runoff?

2019-07-25T09:50:24+00:00

Highly soluble, nutrients in concentrations that can be harmful to the environment can get into stormwater runoff from a variety of sources:

  • nitrogen in the form of nitrate (NO3-) and nitrite (NO2-) — common in fertilizer
  • ammonium ion (NH4+) — often originating from animal urine
  • phosphorus in the form of phosphate (PO43-) — from laundry […]
How do nutrients get into stormwater runoff?2019-07-25T09:50:24+00:00