Cal. Code Regs. tit. 22 § 64447.2

Current through Register 2024 Notice Reg. No. 52, December 27, 2024

Section 64447.2 - Best Available Technologies (BATs) - Inorganic Chemicals

The technologies listed in Table 64447.2-A are the best available technology, treatment techniques, or other means available for achieving compliance with the MCLs in Table 64431-A for inorganic chemicals.

Table 64447.2-A

Best Available Technologies (BATs) Inorganic Chemicals

	*Chemical*	*Best Available Technologies (BATs)*
	Aluminum	10
	Antimony	2, 7
	Arsenic	1, 2, 5, 6, 7, 9, 13
	Asbestos	2, 3, 8
	Barium	5, 6, 7, 9
	Beryllium	1, 2, 5, 6, 7
	Cadmium	2, 5, 6, 7
	Chromium (hexavalent)	5, 7, 14
	Chromium (total)	2, 5, 6^a, 7
	Cyanide	5, 7, 11
	Fluoride	1
	Mercury	2^b, 4, 6^b, 7^b
	Nickel	5, 6, 7
	Nitrate	5, 7, 9
	Nitrite	5, 7
	Perchlorate	5, 12
	Selenium	1, 2^c, 6, 7, 9
	Thallium	1, 5
__________
^a BAT for chromium III (trivalent chromium) only.
^b BAT only if influent mercury concentrations <10 µg/L.
^c BAT for selenium IV only.

Key to BATs in Table 64447.2-A:

1 = Activated Alumina

2 = Coagulation/Filtration (not BAT for systems <500 service connections)

3 = Direct and Diatomite Filtration

4 = Granular Activated Carbon

5 = Ion Exchange

6 = Lime Softening (not BAT for systems <500 service connections)

7 = Reverse Osmosis

8 = Corrosion Control

9 = Electrodialysis

10 = Optimizing treatment and reducing aluminum added

11 = Chlorine oxidation

12 = Biological fluidized bed reactor

13 = Oxidation/Filtration

14= Reduction/Coagulation/Filtration

Cal. Code Regs. Tit. 22, § 64447.2

Note: Authority cited: Sections 116271, 116293(b), 116350 and 116375, Health and Safety Code. Reference: Section 116370, Health and Safety Code.

Note: Authority cited: Sections 116293(b), 116350, 116375, 131052 and 131200, Health and Safety Code. Reference: Section 116370, Health and Safety Code.

1. New section filed 9-8-94 as an emergency; operative 9-8-94 (Register 94, No. 36). A Certificate of Compliance must be transmitted to OAL by 1-6-95 or emergency language will be repealed by operation of law on the following day. For prior history, see Register 88, No. 51.
2. New section refiled 1-3-95 as an emergency; operative 1-3-95 (Register 95, No. 1). A Certificate of Compliance must be transmitted to OAL by 5-3-95 or emergency language will be repealed by operation of law on the following day.
3. New section refiled 4-26-95 as an emergency; operative 4-26-95 (Register 95, No. 17). A Certificate of Compliance must be transmitted to OAL by 8-24-95 or emergency language will be repealed by operation of law on the following day.
4. Certificate of Compliance as to 4-26-95 order including amendment of section heading, first paragraph and Table 64447.2-A transmitted to OAL 5-5-95 and filed 6-19-95 (Register 95, No. 25).
5. Amendment of Table and Note filed 4-17-2000; operative 5-17-2000 (Register 2000, No. 16).
6. Amendment of section and Note filed 9-18-2007; operative 10-18-2007 (Register 2007, No. 38).
7. Amendment of Table 64447.2-A and amendment of Note filed 10-29-2008; operative 11-28-2008 (Register 2008, No. 44).
8. Amendment of section and Note filed 5-28-2014; operative 7/1/2014 (Register 2014, No. 22).
9. Change without regulatory effect amending Table 64447.2-A filed 9-11-2017 pursuant to section 100, title 1, California Code of Regulations (Register 2017, No. 37).
10. Amendment of section and NOTE filed 7-24-2024; operative 10/1/2024 (Register 2024, No. 30).