N.M. Admin. Code § 20.7.3.811

Current through Register Vol. 35, No. 17, September 10, 2024

Section 20.7.3.811 - SPLIT FLOW SYSTEMS

Split flow systems may be installed for the purpose of reduction of total nitrogen discharges in lieu of installation of non-discharging or tertiary treatment systems.

A. Based on the assumption that toilet waste contains 80% of the total nitrogen in domestic liquid waste and that the quantity of liquid waste from toilets is 25% of the total domestic waste stream, the following formula shall be used to calculate the minimum lot size allowed for permitting of a split flow system: minimum lot size (in acres) = 0.0003 x design flow.

B. The disposal system for non-toilet waste shall be based on the assumption that non-toilet waste comprises 75% of the design flow and therefore may be reduced to 75% of the minimum required absorption area in 20.7.3.703 NMAC.

C. The toilet waste holding tank shall have a minimum capacity of 1000 gallons and shall meet all requirements of holding tanks described in 20.7.3.808 NMAC, except for Subsections A, B, C, D, E and H.

D. Effluent from the waste holding tank may be discharged to an ET bed constructed in accordance with 20.7.3.805 NMAC and sized at 25% of design flow. An effluent filter is required on the waste holding tank.

N.M. Admin. Code § 20.7.3.811

20.7.3.811 NMAC - N, 9/1/13