COAST 



SOURCE- 



OF 

 SPILL 



A 



COAST 



SEA 



— i — • — i — i — i — i — i 



SPILL 

 IMPACTED — 

 AREA 



i — »-&-» — i — i — i — i — i — i 



B 



Figure 5. Sampling patterns utilizing transects laid out in a fan-shaped 

 pattern (A) and in a parallel pattern (B). Transects laid out in a parallel 

 pattern also can function as sampling grids. 



types of spills. They are presented here as examples of general sampling 

 techniques. No sampling methods, however, are truly universal, such that 

 they could be used to collect uncontaminated samples at any kind of chem- 

 ical spill. The laboratory that will do the analyses of samples from a 

 particular spill should be consulted about sampling methods prior to the 

 actual collection of samples at the spill site. Such consultation would 

 eliminate sample collection, preservation, and/or storage errors that could 

 make analysis of the samples useless. 



Generally, the only materials that should be allowed to come into con- 

 tact with a sample during collection or storage are glass, Teflon, aluminum 

 foil, and stainless steel. One notable exception is that samples designated 



189 



