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Carbaryl, Carbofuran, and Methomyl - National Marine Fisheries ...

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nitrogen), <strong>and</strong> sediment (Table 41). Other ions generally elevated in urban streams<br />

include calcium, sodium, potassium, magnesium, <strong>and</strong> chloride ions where sodium<br />

chloride is used as the principal road deicing salt (Paul <strong>and</strong> Meyer 2001). The combined<br />

effect of increased concentrations of ions in streams is the elevated conductivity observed<br />

in most urban streams.<br />

Table 41. Examples of Water Quality Contaminants in Residential <strong>and</strong> Urban Areas<br />

Contaminant groups Select constituents Select example(s)<br />

Source <strong>and</strong> Use<br />

Information<br />

Fertilizers Nutrients<br />

Phosphorus<br />

Nitrogen<br />

lawns, golf courses,<br />

urban l<strong>and</strong>scaping<br />

brake pad dust,<br />

Heavy Metals Pb, Zn, Cr, Cu, Cd, Ni, Hg, Mg Cu<br />

highway <strong>and</strong> parking<br />

lot runoff, rooftops<br />

Pesticides including-<br />

Insecticides (I)<br />

Herbicides (H)<br />

Fungicides (F)<br />

Wood Treatment<br />

chemicals (WT)<br />

Legacy Pesticides (LP)<br />

Other ingredients in<br />

pesticide formulations<br />

(OI)<br />

Organophosphates (I)<br />

Carbamates (I)<br />

Organochlorines (I)<br />

Pyrethroids (I)<br />

Triazines (H)<br />

Chloroacetanilides (H)<br />

Chlorophenoxy acids (H)<br />

Triazoles (F)<br />

Copper containing fungicides (F)<br />

Organochlorines (LP)<br />

Surfactants/adjuvants (OI)<br />

Chlorpyrifos (I)<br />

Diazinon (I)<br />

<strong>Carbaryl</strong> (I)<br />

Atrazine (H)<br />

Esfenvalerate (I)<br />

Creosote (WT)<br />

DDT (LP)<br />

Copper sulfate (F)<br />

Metalaxyl (F)<br />

Nonylphenol (OI)<br />

golf courses, right of<br />

ways, lawn <strong>and</strong> plant<br />

care products, pilings,<br />

bulkheads, fences<br />

hospitals, dental<br />

Pharmaceuticals <strong>and</strong><br />

personal care products<br />

Natural <strong>and</strong> synthetic hormones<br />

soaps <strong>and</strong> detergents<br />

Ethinyl estradiol<br />

Nonylphenol<br />

facilities, residences,<br />

municipal <strong>and</strong><br />

industrial waste water<br />

discharges<br />

fossil fuel combustion,<br />

Polyaromatic<br />

hydrocarbons (PAHs)<br />

Tricyclic PAHs Phenanthrene<br />

oil <strong>and</strong> gasoline leaks,<br />

highway runoff,<br />

creosote-treated wood<br />

PCBs<br />

utility infrastructure,<br />

Industrial chemicals<br />

PBDEs<br />

Penta-PBDE flame retardants,<br />

Dioxins<br />

electronic equipment<br />

Many other metals have been found in elevated concentrations in urban stream sediments<br />

including arsenic, iron, boron, cobalt, silver, strontium, rubidium, antimony, sc<strong>and</strong>ium,<br />

molybdenum, lithium, <strong>and</strong> tin (Wheeler, Angermeier et al. 2005). The concentration,<br />

storage, <strong>and</strong> transport of metals in urban streams are connected to particulate organic<br />

matter content <strong>and</strong> sediment characteristics. Organic matter has a high binding capacity<br />

for metals <strong>and</strong> both bed <strong>and</strong> suspended sediments with high organic matter content<br />

frequently exhibit 50-7,500 times higher concentrations of zinc, lead, chromium, copper,<br />

mercury, <strong>and</strong> cadmium than sediments with lower organic matter content.<br />

250

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