| (a) The permittee shall ensure that piping materials
used in delivering treated effluent from the treatment facility to
the dispersal zones are suitable for effluent and conform to regulations
as required by Chapter 217 of this title (relating to Design Criteria
for Domestic Wastewater Systems) or Chapter 317 of this title (relating
to Design Criteria Prior to 2008) as applicable.
(b) The permittee shall identify the piping materials
by referring to the appropriate ASTM International, American National
Standard Institute, or American Water Works Association specification
numbers.
(c) A permittee shall use a multiple pump system for
all systems requiring pumping of effluent to the dispersal zones.
(1) The permittee shall use pumps rated by the manufacturer
for effluent disposal.
(2) The permittee shall use pumps that are each rated
for at least 100% of the design flow.
(3) The permittee shall include the pumping capacity
and pump head calculations in the plans and specifications.
(d) The permittee shall ensure that the pump discharge
piping includes a check valve, union, and gate valve for each submersible
pump installed.
(e) The permittee shall use piping and valves made
of corrosion-resistant materials for applications subject to corrosive
gases.
(f) If self-priming pumps are used for subsurface area
drip dispersal systems, the permittee shall use pumps that meet at
least the minimum requirements listed under §217.61 of this title
(relating to Lift Station Pumps) or §317.3 of this title (relating
to Lift Stations), with the exception that the pumps are not required
to meet the solids-handling requirement.
(g) The permittee shall include a check and gate valve
for each unit of the discharge piping for self-priming pumps.
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