25G - HPPA - DOMESTIC WATER QUALITY TESTING SERVICES

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EXHIBIT A SCOPE OF WORK A. SAMPLING 1. BACTERIOLOGICAL QUALITY a. Routine: Samples shall be collected by the Consultant, in appropriate sterilized bottles to which a chlorine reducing agent has been properly added, on a weekly basis at 50 designated sample points (Table 1). Total coliform analyses will be conducted using either the multiple tube fermentation method analyzing a minimum of 100-m1 of water either with using 5-tube 20-m1 portions or 10-tube 10-m1 portions, the membrane filter technique, the presence/absence (P-A) coliform test, or the minimal medium (coliform) test. Reporting of positive samples shall be based on the presence or absence of coliforms in each sample rather than an estimation of coliform density. Upon detecting that either a routine or repeat sample is either total coliform or fecal coliform positive, or a sample is invalidated due to interference problems, the Consultant shall notify the City within twenty-four hours. To complete the notification, consultant must contact a live individual. Voice mail and faxed notifications will only be a secondary means of notification. The appropriate contact person for the City is the Water Services Quality Inspector at (714) 647- 3341 or the Water Services Quality Coordinator at (714) 647-3316. When voice mail is used to leave a message, the Consultant shall contact the City's Dispatch Office at (714) 647-3380 between the hours of 7:00 a.m. and 3:30 p.m. If notification is required during a weekend or holiday, the Water Services Quality Inspector should be contacted at (714) 371-6779. In addition, a copy of the City's Emergency Notification Plan (Attachment A) is attached. In the event that the Consultant is unable to contact the City within 24 hours, the Consultant shall notify the Department of Public Health, Drinking Water Field Operations Branch, Santa Ana District, at (714) 558-4410. Upon detecting that a routine or repeat sample is total coliform positive, the Consultant shall perform a fecal coliform test. The Consultant shall, within twenty-four hours after notifying the City that a single routine sample is total coliform positive, collect three repeat samples. One shall be from the same total coliform positive sample point. The other two locations shall be determined by the City, one to be located within five service connections upstream and the other within five service connections downstream of the total coliform positive sample point (Table 3). If total coliforms are detected in any repeat sample, the Consultant must within twenty-four hours, after notifying the City that a repeat sample is total coliform positive sample, collect another set of repeat samples from the same locations. 25G-9