California Code of Regulations › Title 22 - Social Security › Division 4 - Environmental Health › Chapter 15 - Domestic Water Quality and Monitoring Regulations › Article 5.5 - Primary Standards-Organic Chemicals › Section 64445.1 - Repeat Monitoring and Compliance-Organic Chemicals

Current through Register 2024 Notice Reg. No. 28, July 12, 2024
(a) For the purposes of this article,
				  detection shall be defined by the detection limits for purposes of reporting
				  (DLRs) in table 64445.1-A:
Table 64445.1-A
Detection Limits for Purposes of Reporting (DLRs) for
					 Regulated Organic Chemicals
Chemical
Detection Limit for Purposes of
							 Reporting (DLR) (mg/L)
(a) All VOCs, except as listed
							 ......................................
0.0005
Methyl-
tert
-butyl ether
							 ......................................
0.003
Trichlorofluoromethane
							 ......................................
0.005
1,1,2-Trichloro-1,2,2-Trifluoroethane
							 ......................................
0.01
(b)
							 SOCs......................................
Alachlor......................................
0.001
Atrazine......................................
0.0005
Bentazon......................................
0.002
Benzo(a)pyrene......................................
0.0001
Carbofuran......................................
0.005
Chlordane......................................
0.0001
2,4-D......................................
0.01
Dalapon......................................
0.01
Dibromochloropropane
							 (DBCP)......................................
0.00001
Di(2-ethylhexyl)adipate......................................
0.005
Di(2-ethylhexyl)phthalate......................................
0.003
Dinoseb......................................
0.002
Diquat......................................
0.004
Endothall......................................
0.045
Endrin......................................
0.0001
Ethylene dibromide
							 (EDB)......................................
0.00002
Glyphosate......................................
0.025
Heptachlor......................................
0.00001
Heptachlor
							 epoxide......................................
0.00001
Hexachlorobenzene......................................
0.0005
Hexachlorocyclopentadiene......................................
0.001
Lindane......................................
0.0002
Methoxychlor......................................
0.01
Molinate......................................
0.002
Oxamyl......................................
0.02
Pentachlorophenol......................................
0.0002
Picloram......................................
0.001
Polychlorinated biphenyls
							 (PCBs)......................................
(as
							 decachlorobiphenyl)......................................
0.0005
Simazine......................................
0.001
Thiobencarb......................................
0.001
Toxaphene......................................
0.001
1,2,3-Trichloropropane......................................
0.000005
2,3,7,8-TCDD
							 (Dioxin)......................................
5x10-9
2,4,5-TP (Silvex)......................................
0.001
(b)
				  When organic chemicals are not detected pursuant to table 64445.1-A.
(1) A water system, which has not detected
				  any of the VOCs on table 64444-A during the initial four quarters of
				  monitoring, shall collect and analyze one sample annually. After a minimum of
				  three years of annual sampling with no detection of a VOC in table 64444-A, a
				  system using groundwater may reduce the monitoring frequency to one sample
				  during each compliance period. A system using surface water shall continue
				  monitoring annually.
(2) A system
				  serving more than 3,300 persons which has not detected an SOC on table 64444-A
				  during the initial four quarters of monitoring shall collect a minimum of two
				  quarterly samples for that SOC in one year during the year designated by the
				  State Board of each subsequent compliance period. The year will be designated
				  on the basis of historical monitoring frequency and laboratory
				  capacity.
(3) A system serving
				  3,300 persons or less which has not detected an SOC on table 64444-A during the
				  initial four quarters of monitoring shall collect a minimum of one sample for
				  that SOC during the year designated by the State Board of each subsequent
				  compliance period. The year will be designated on the basis of historical
				  monitoring frequency and laboratory capacity.