Figure: 30 TAC §285.91(9)
Table IX. OSSF System Designation.
|
SYSTEM DESCRIPTION |
SYSTEM TYPE |
PLANNING MATERIAL TO BE PREPARED BY R.S. or P.E.2 |
INSTALLER REQUIREMENTS |
|
Septic Tank & Absorptive Drainfield |
Standard |
No |
Class I or II |
|
Septic Tank & ET Drainfield (Unlined) Septic Tank & ET Drainfield (Lined) |
Standard Standard |
No No |
Class I or II Class II |
|
Septic Tank & Pumped Drainfield |
Standard |
No |
Class I or II |
|
Septic Tank & Leaching Chamber |
Proprietary |
No |
Class I or II |
|
Septic Tank & Gravelless Pipe |
Proprietary |
No |
Class I or II |
|
Septic Tank & Low Pressure Dosing |
Non-standard |
Yes |
Class II |
|
Septic Tank & Absorptive Mounds |
Non-standard |
Yes |
Class II |
|
Septic Tank & Soil Substitution |
Non-standard |
Yes |
Class I or II |
|
Septic Tank, Secondary Treatment, Filter & Surface Application |
Non-standard |
Yes |
Class II |
|
Aerobic Treatment & Standard Absorptive Drainfields |
Proprietary |
Yes |
Class II |
|
Aerobic Treatment & ET Drainfield |
Proprietary |
Yes |
Class II |
|
Aerobic Treatment & Leaching Chamber |
Proprietary |
Yes |
Class II |
|
Aerobic Treatment & Gravelless Pipe |
Proprietary |
Yes |
Class II |
|
Aerobic Treatment, Filter & Drip Emitter |
Proprietary |
Yes |
Class II |
|
Aerobic Treatment & Low Pressure Dosing |
Proprietary |
Yes |
Class II |
|
Aerobic Treatment & Absorptive Mounds |
Proprietary |
Yes |
Class II |
|
Aerobic Treatment & Surface Application |
Proprietary |
Yes |
Class II |
|
Any Other Treatment System |
--- |
Yes |
Class II |
|
Any Other Subsurface Disposal System |
--- |
(1) |
(1) |
|
Any Other Surface Disposal System |
--- |
Yes |
Class II |
|
Non-Standard Treatment when Secondary Treatment Required |
Non-Standard |
Engineer Only |
Class II |
|
Holding Tank |
--- |
No |
Class I or II |
(1) Determined by the executive director based upon review required by §285.5(b)(2) of this Chapter (relating to submittal requirements for planning materials).
(2) The site evaluation is required to be performed by either a site evaluator or a professional engineer.