Wood Treatment Levels

Code Requirements:
IBC 2302.1.8
IBC 1809.1.2
IRC R319.1
IRC R320.3.1

UC4A - GROUND CONTACT

UC4B - FOUNDATION POSTS

Code	Preservative Name	UC1/2	UC3B	UC4A	UC4B
ACC	Acid Copper Chromate	0.25	0.25	0.50	---
ACQ	Alkaline Copper Quaternary (Types A,B,C)	0.25	0.25	0.40	0.60
ACQ	Alkaline Copper Quaternary (Type D)	0.15	0.15	0.40	0.60
ACZA	Ammoniacal Copper Zinc Arsenate	0.25	0.25	0.40	0.60
CA-B	Copper Azole, Type B	0.10	0.10	0.21	0.31
CA-C	Copper Azole, Type C	0.060	0.060	0.15	0.31
CuN-W	Waterborne Copper Naphthenate	0.070	0.070	0.11	---
CX-A	Copper HDO	0.206	0.206	---	---
EL2	DCOI-Imidicloprid-Stabilizer	0.019	0.019	---	---
PTI	Propiconazole-Tebuconazole-Imidicloprid	0.013	0.018	---	---
PTI	PTI plus Stabilizer	0.013	0.013	---	---
SBX	Inorganic Boron (Formosan termites)	0.28	---	---	---
SBX	Inorganic Boron (non-Formosan termites)	0.17	---	---	---

Reference:
AWPA