VI-221 



In any monitoring program the value of observed data depends upon: 



(1) Sampling procedures which provide samples representa- 

 tive of the condition of the air, land, and water Inter- 

 faces at any point In time. 



(2) Sufficient vertical and horizontal control points, 

 the samples from which will adequately describe the system. 



(3) Sufficient frequency of sample collection to validate 

 the analyses within any pre-selected statistical confidence 

 limits. 



(4) Analytical procedures which are of defined precision 

 In terms of the parameter being measured. 



In recognition of the fact that the character of one restricted water 

 body or coastal regime Is quite likely different from another, no 

 recomnendatlon can be made concerning the Items 2,3, and 4 above 

 without enumerating the definitive characteristics of each water 

 body. This hopefully will be accomplished by a monitoring program 

 with sufficient sampling locations and with sufficient frequency to 

 describe the system within reasonable confidence limits. 



It Is realized that any monitoring program designed to meet what 

 are present, and as well as can be predicted, future needs may 

 require modification from time to time. It Is, therefore, obvious 

 that periodic examination must be given to monitoring specifications 

 to Insure their continuing adequacy and to remove redundancy. 



