California Code of Regulations › Title 22 - Social Security › Division 4 - Environmental Health › Chapter 17.5 - Lead and Copper › Article 3 - Monitoring for Lead and Copper › Section 64677 - Sample Collection Methods for Taps

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a) All tap samples for lead and copper
				  collected pursuant to this chapter, with the exception of lead service line
				  samples collected under section
				  64689 (Lead Service Line Sampling)
				  and samples collected under subsection (d), shall be first-draw samples,
				  pursuant to subsection (b).
(b) A
				  first-draw sample shall be one liter in volume and have stood motionless in the
				  plumbing system of each site for at least six hours, but not more than twelve.
				  Samples from residential housing shall be collected from the cold-water kitchen
				  tap or bathroom sink tap. Samples from a non-residential building shall be
				  collected at an interior tap from which water is typically drawn for
				  consumption. Samples may be collected by the system or the system may allow
				  residents to collect tap samples after instructing the residents of the
				  sampling procedures specified in this section. To avoid problems of residents
				  handling nitric acid, acidification of samples may be done up to 14 days after
				  collection. After acidification to resolubilize the metals, the sample shall
				  stand in the original container for the time specified by the method used
				  pursuant to section
				  64670(c) before
				  it can be analyzed. If a system allows residents to perform sampling, the
				  system may not challenge, based on alleged errors in sample collection, the
				  accuracy of sampling results.
(c) A
				  system shall collect each tap sample from the same site from which it collected
				  a sample during the previous period. If the system cannot gain entry to a site
				  in order to collect a tap sample, it may collect the tap sample from another
				  site in its sampling pool as long as the new site meets the same criteria, and
				  is as close as possible to the original site.
(d) A system that does not have enough taps
				  to supply first-draw samples may apply to the Department in writing to
				  substitute non-first-draw samples. Such systems shall collect as many
				  first-draw samples as possible and identify sampling times and locations that
				  would likely result in the longest standing time for the remaining
				  sites.
1. New
					 article 3 and section filed 12-11-95 as an emergency; operative 12-11-95
					 (Register 95, No. 50). A Certificate of Compliance must be transmitted to OAL
					 by 4-9-96 or emergency language will be repealed by operation of law on the
					 following day.
2. Refiling of 12-11-95 order, including amendment of
					 NOTE, filed 4-9-96 as an emergency; operative 4-10-96 (Register 96, No. 15). A
					 Certificate of Compliance must be transmitted to OAL by 8-8-96 or emergency
					 language will be repealed by operation of law on the following
					 day.
3. Certificate of Compliance as to 12-11-95 order, including
					 amendment of subsection (a), transmitted to OAL 8-7-96 and filed 9-16-96
					 (Register 96, No. 38).
4. Repealer of article 3 (sections
					 64677-64678) and repealer and new
					 section filed 9-11-2003; operative 10-11-2003 (Register 2003, No.
					 37).
Note: Authority cited: Sections
						100275,
						116350,
						116365,
						116375
						and
						116385,
						Health and Safety Code. Reference: Sections
						116325-
						116750,
						Health and Safety Code.