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STATE WATER RESOURCES CONTROL BOARD - 21 - <br /> ORDER <br /> 21 - <br /> ORDER WQ 2014-0153-DWQ <br /> GENERAL WASTE DISCHARGE REQUIREMENTS <br /> FOR SMALL DOMESTIC WASTEWATER TREATMENT SYSTEMS <br /> with holding tank additives that may contain, among other chemicals, <br /> formaldehyde, zinc, and/or phenol. <br /> Use of holding tank chemicals shall be discouraged by the wastewater system <br /> owner/operator. Education of visitors can be accomplished by providing an <br /> information sheet upon check-in. Information on holding tank chemicals is <br /> provided in Attachment B2. The sale or provision of such additives by the <br /> Discharger to operators of RVs served by the Discharger's wastewater facility may <br /> be determined to be evidence of noncompliance with this section. <br /> c. To the maximum extent possible, RV, portable toilet, or similar wastes shall not be <br /> discharged to a septic tank or functionally equivalent system (e.g. Imhoff tank) <br /> without subsequent additional treatment (e.g., aerated pond, recirculating sand <br /> filter, etc.) prior to disposal. <br /> d. Septic tanks shall be pumped when any one of the following conditions exists: <br /> i. The combined thickness of sludge and scum exceeds one-third of the tank <br /> depth of the first compartment. <br /> ii. The scum layer is within 3 inches of the outlet device. <br /> iii. The sludge layer is within 8 inches of the outlet device. <br /> e. Septage is the liquid, solid, and semisolid material that results from wastewater <br /> treatment in a septic tank, which must be pumped, hauled, treated, and disposed <br /> of properly. (40 C.F.R. § 503.) Septage disposal shall only be to a legal disposal <br /> site that has been issued WDRs by a Regional Water Board allowing septage <br /> disposal. Septage shall be handled in such a manner as to prevent its reaching <br /> surface waters or watercourses. <br /> 3. Aerobic Treatment Units <br /> a. Within 90 days of the issuance of an NOA, the Discharger shall submit a Sludge <br /> Management Plan consistent with the requirements of Provision E.1.c of this <br /> General Order. The Discharger must obtain written approval from the Regional <br /> Water Board's Executive Officer prior to any disposal of sludge. The Executive <br /> Officer shall be notified of any changes in an approved Sludge Management Plan <br /> at least 90 days in advance of the proposed change. <br /> b. Modifications to a Sludge Management Plan deemed part of an emergency action <br /> shall be noticed to the Regional Water Board Executive Officer within five days of <br /> disposal with a rationale for the emergency modification. <br /> c. Gauging and limited repairs may be performed by homeowners or contractors as <br /> allowed by the Business and Professions Code (Bus. & Prof. Code, §§ 7044, <br /> 7048). With certain exceptions, anyone performing construction work in California <br /> must be licensed by the California Contractors' State License Board. Septic tank, <br /> aerobic treatment unit, and/or leach field service (repairs, pumping, etc.) shall be <br /> performed only by a California licensed General Engineering (A), Plumbing (C-36), <br /> or Sanitation System (C-42) contractor. The Discharger shall maintain a record of <br /> all service activities for a minimum of five years. At a minimum, the record shall <br /> September 23, 2014 <br />