Project Watershed CNY/SOS has been collecting data since 1995. However, the Consortium has included data that has been collected since 1991 by the Central New York Chapter of the IWLA SOS program in their database. As part of the standard program protocols, any data that are considered out of the ordinary are reported to the Director. The Director may take another water sample to verify the result. The Director may seek external professional assistance to verify results. Errors found in the database are reported to the Data Manager who maintains the system. All volunteers are encouraged to attend training workshops or sessions, when offered, to learn proper stream monitoring procedures. Veteran volunteers are also encouraged to attend such workshops to refresh their skills.