25 Pa. Code § 73.45 - Dosing tanks
Dosing tanks shall be constructed to the following specifications:
(1) Dosing tanks shall
be constructed of materials to the specifications outlined in §
73.31(b)
(relating to standards for septic tanks).
(2) For all systems other than individual
residential spray irrigation systems, the dosing tank shall be designed so that
the estimated daily flow shall be discharged to the absorption area in one or
more doses. Minimum dose volume shall be five times the internal liquid
capacity of the delivery pipe, manifold and laterals, or 100 gallons, whichever
is greater. When a siphon is used in a pressure distribution system, the
minimum dose volume shall be equal to the internal liquid capacity of the
delivery line plus five times the internal liquid capacity of the manifold and
laterals.
(3) The dosing tank shall
have a minimum liquid capacity equal to or greater than two times the designed
dose volume.
(4) Sufficient space
shall be provided for electrical connections and proper pump control
operation.
(5) Unless otherwise
regulated by local electrical codes, all electrical connections shall be
moisture resistant and at a point higher than the inlet pipe, or mounted above
grade outside of the dosing tank or manhole extension within a tamper
resistant, lockable control box.
(6) A watertight manhole, at least 20 inches
square or 24 inches in diameter, extended to grade, shall be provided for
access to the dosing tank. Manhole covers shall meet the specifications of
§
73.31(d).
Notes
The provisions of this § 73.45 amended under section 9 of the Pennsylvania Sewage Facilities Act (35 P. S. § 750.9); The Clean Streams Law (35 P. S. §§ 691.1-691.1001); and section 1920-A of The Administrative Code of 1929 (71 P. S. § 510-20).
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