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Noise can be defined simply as unwanted sound. At anything over 55 Db(A) outside it is annoying to most of us. That is enough to damage our cardio-vascular system over time.  Above 60 Db(A), can degrade our hearing. 

Populations near Gillespie flight patterns are exposed to long periods single and double engine flights of between 60 Db and 85-90 Db and jet take offs can approach 120 Db.

To learn more, please read the following from Environmental Health Perspectives: Noise that Annoys: Regulating Unwanted Sound

Toxic Emissions

A number of noxious elements, are found in aviation fuel emissions. Nitrogen oxides, hydrocarbons, particulate matter, carbon monoxide and a number of other toxins, just to name a few.

Nitrogen oxides and hydrocarbons are precursors for ozone formation Ozone can cause lung irritation at ground level and can aggravate lung diseases like asthma, bronchitis and emphysema.  

Particulate matter, particularly fine particulate matter can cause serious cardio-pulmonary harm.

Lead additives are used in Avgas, the fossil fuel burned in most piston driven aircraft. Fight schools like those at Gillespie Field use propeller driven aircraft in the training patterns above our neighborhoods.

The following study found in Environmental Health Perspectives establishes the link between airport proximity and higher blood lead levels in children. No amount of lead is safe in anybody's blood, but it is particularly lethal to children.