| (a) Discharge or disposal. Filter backwash water and
drainage water that is not reused in a lagoon shall be discharged
or disposed of in accordance with the requirements of TCEQ or local
regulatory authority.
(b) No direct connection. No direct mechanical (hard)
connection shall be made between the lagoon, the lagoon drain, the
chemical treatment equipment, or the system of piping and the sanitary
sewer system, septic system, or other wastewater disposal system.
(c) Backwash water. Backwash water and lagoon draining
water shall be discharged through an air gap formed by positioning
the discharge pipe opening at least two pipe diameters above the overflow
level of any barriers that could cause flooding and submergence of
the discharge opening or by other means in accordance with TCEQ requirements.
Splash screening barriers are permitted as long as the barriers do
not destroy air gap effectiveness.
(d) On-site sewage facility wastewater disposal lines.
On-site sewage facility wastewater disposal lines shall be located
in compliance with 30 TAC §285.31 (relating to Selection Criteria
for Treatment and Disposal Systems) or local regulatory requirements.
(e) Other wastewater or drainage water disposal facilities
or lines. The location of other wastewater disposal facilities or
lines shall meet applicable standards of 30 TAC, Chapter 307, Texas
Surface Water Quality Standards, Chapter 308, Criteria and Standards
for the National Pollutant Discharge Elimination System, Chapter 311,
Watershed Protection, and Chapter 315, Pretreatment Regulations for
Existing and New Sources of Pollution, or local regulatory authority.
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