NYC-WTC_000233682

NYC 9/11 Public Portal Document

response guidelines

6.3 Threat Management Matrices

This section presents a “contamination threat management matrix” for each of the threat warnings described in Section 2.2. Each matrix is a tabular summary that lists the following at the ‘possible,’ ‘credible,’ and ‘confirmatory’ stages of the threat evaluation: • Information considered during the threat evaluation. • Factors considered during the threat evaluation. • Potential response actions.

6.3.1 Security Breach THREAT E\ ALl'ATION STAGE Possible Credible Confirmatory I Location of security breach. • Results of site characterization at • Results of sample analysis. n Time of security breach. location of security breach. • Contaminant information. Information from alarms. • Previous security incidents. • Results of site characterization f Observations when security • Real time water quality data from at other investigation sites. o breach was discovered. the location of security breach. • Input from primacy agency r Additional details from the • Input from local law enforcement. and public health agency. threat warning. a t i o Bl Was there an opportunity for • Do site characterization results • Were unusual contaminants contamination? reveal signs of contamination? detected during analysis? Do i Has normal operational • Is this security breach similar to they pose a risk to the public? activity been ruled out? previous security incidents? • Do site characterization results Have other “harmless” • Does other information (e.g., reveal signs of contamination? 1 causes been ruled out? water quality) corroborate threat? • Is contamination indicated by a • Does law enforcement consider “preponderance of evidence?’’ this a credible threat? t Ts

67 Interim Final - August 2004

CITY_21MC100_0 04992406

NYC-WTC_000233749