IV-438 



the water and hydrogen sulfide gas escapes into the air. In every 

 dump, even including those where no garbage is buried, an increase 

 in temperature plus an amount of decay produces hydrogen sulfide." 

 (IV-6-2). In combination with salt water this produces a vile odor 

 that produces numerous complaints from residents near such dumps. 

 In short, the cost of cheap dumping of solid refuse despoils not only 

 the land surface to the west and the air for miles, but ultimately the 

 water quality of the Bay itself. 



Such use has prohibitive impact because of the uncontrollable nature 

 and permanent damage caused by such activities. 



Bridges, Jetties, Dikes, Breakwaters, Causeways 



The prohibitive impact of such structures, when it occurs, is 

 usually far more gradual than the impact of large land fills. The 

 group of structures discussed here are either deliberately placed 

 in an estuary to control water movement or else cross the system to 

 carry land transportation. In either case they are long narrow 

 structures which affect water movement patterns. Their effects may 

 be beneficial to the environment or they may be the reverse. 



The construction of a highway through the coastal area of Louisiana 

 and Mississippi effectively separated the inland areas of the coastal 

 marshes from the outer marsh areas, completely altering the 

 circulation patterns of the entire marsh system. The result has 



