Section 329 IAC 10-29-10 - Ground water quality standardAuthority: IC 13-14-8-7; IC 13-15-2-1; IC 13-19-3-1
Affected: IC 13-30-2; IC 36-9-30
Sec. 10.
(a) The constituents that comprise the ground water protection standard for the purposes of this rule are as follows:(1) The following inorganics:(H) Nitrate (as nitrogen).(2) The following volatile organic compounds: (E) Bromodichloromethane.(H) 2-butanone (methyl ethyl ketone).(J) Carbon tetrachloride.(L) Chlorodibromomethane.(N) 2-chloroethyl vinyl ether.(R) Dichlorodifluoromethane.(U) 1,2-dichloroethene (total).(V) cis-1,3-dichloropropene.(W) trans-1,3-dichloropropene.(CC) 4-methyl-2-pentanone.(EE) 1,1,2,2-tetrachloroethane.(GG) 1,1,1-trichloroethane.(HH) 1,1,2-trichloroethane. (JJ) Trichlorofluoromethane.(KK) 1,2,3-trichloropropane.(b) The concentrations of the constituents listed in subsection (a) must not exceed current background concentrations or the maximum contamination level (MCL) established for the constituent, whichever is the higher concentration. If an MCL has not been established, then the concentration limit is the background concentration of ground water at the facility. When background is the standard, statistically significant exceedances must be determined as provided in section 5 of this rule.(c) As used in this section, "maximum contamination level" or "MCL" is defined under 329 IAC 10-2-110.Solid Waste Management Board; 329 IAC 10-29-10; filed Mar 14, 1996, 5:00 p.m.: 19 IR 1904; readopted filed Jan 10, 2001, 3:25 p.m.: 24 IR 1535; readopted filed May 14, 2007, 1:53 p.m.: 20070523-IR-329070138BFAReadopted filed Jul 29, 2013, 9:20 a.m.: 20130828-IR-329130179BFA; readopted filed Jun 14, 2019, 2:00 p.m.: 20190710-IR-329190249BFA