Okla. Admin. Code § tit. 165, ch. 26, app HDownload PDFCurrent through Vol. 42, No. 8, January 2, 2025Appendix H - Spacing (Shell to Shell) Between Adjacent TanksFigure 1 Okla. Admin. Code tit. 165, ch. 26, app HAdded at 17 Ok Reg 2875, eff 7-15-00