NYC-WTC_000233682

NYC 9/11 Public Portal Document

RESPONSE GUIDELINES

2.8 Water Quality/Consumer Complaint Report Form

INSTRUCTIONS This form is provided to guide the individual responsible for evaluating unusual water quality data or consumer complaints. It is designed to prompt the analyst to consider various factors or information when evaluating the unusual data. The actual data used in this analysis should be compiled separately and appended to this form. The form can be used to support the threat evaluation due to a threat warning from unusual water quality or consumer complaints, or another type of threat warning in which water quality data or consumer complaints are used to support the evaluation.

Note that in this form, water quaiity refers to both specific water quality parameters and the general aesthetic characteristics of the water that might result in consumer complaints.

Threat warning is based on: □ Water quality □ Consumer complaints □ Other

What is the water quality parameter or complaint under consideration?

Are unusual consumer complaints corroborated by unusual water quality data?

Is the unusual water quality indicative of a particular contaminant of concern? For example, is the color, order, or taste associated with a particular contaminant?

Are consumers in the affected area experiencing any unusual health symptoms?

What is ‘typical’ for consumer complaints for the current season and water quality? Number of compiaints. Nature of compiaints. Ciustering of compiaints

What is considered to be ‘normal’ water quality (i.e., what is the baseline water quality data or level of consumer complaints)?

What is reliability of the method or instrumentation used for the water quality analysis? Are standards and reagents OK? is the method/instrument functioning properiy?

Based on recent data, does the unusual water quality appear to be part of a gradual trend (i.e., occurring over several days or longer)?

Are the unusual water quality observations sporadic over a wide area, or are they clustered in a particular area? What is the extent of the area? A pressure zone. A neighborhood. A city biock. A street. A buiiding.

25 Interim Final - August 2004

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NYC-WTC_000233707