§ 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).
Authority 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).
Source The provisions of this § 73.45 adopted August 2, 1971, effective August 14, 1971, 1 Pa.B. 1649; amended August 30, 1974, effective September 16, 1974, 4 Pa.B. 1805; amended January 21, 1983, effective January 22, 1983, 13 Pa.B. 508; amended November 7, 1997, effective November 8, 1997, 27 Pa.B. 5877. Immediately preceding text appears at serial pages (217329) to (217330).
Cross References This section cited in 25 Pa. Code § 73.46 (relating to dosing pumps); 25 Pa. Code § 73.161 (relating to general); and 25 Pa. Code § 73.164 (relating to chlorine contact/storage tanks).
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