SITE INFORMATION AND CORRESPONDENCE

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TECHNICAL INFORMATION REQUIREMENTS Page 3 of 12 FOR A REPORT OF WASTE DISCHARGE B. Wastewater Facility and Discharge Complete this section for both new/proposed facilities and existing facilities. 1. A description of the sources and types of wastewater flowing into the system from: a. residential (population served and number of connections or equivalent dwelling units). b. commercial (number of connections by type). c. industrial (number of connections by type). 2. Design influent flow rates (average daily, dry weather daily, peak hour, peak day, and peak month), and the design treatment capacity of the system with respect to each of these. For new/proposed facilities, provide the methods used to estimate these design parameters and copies of all calculations. 3. For existing facilities, a summary table of monthly influent flow totals and monthly precipitation totals for the last five years. Explain any data gaps, outliers, and/or unusual circumstances that might affect measured flow rates. If sewer inflow and infiltration (1/1) contributes significantly to influent flow, provide an 1/1 analysis to project 1/1 as a function of total annual precipitation and/or groundwater level as appropriate. 4. A detailed description of the'facilities that generate wastewater, and all wastewater conveyance, treatment, and disposal systems. Use site plans and conceptual drawings as appropriate to illustrate locations and typical construction. Include all treatment processes. The following maps, plans, and illustrations are needed: a. A facility location map showing local topography, the facility location and/or boundaries, streets, and surface waters (including storm water drainage ditches, irrigation canals, and irrigation/tailwater ditches). b. A process flow schematic for the entire treatment and disposal system. Include existing and proposed flow monitoring devices and sampling locations proposed to determine compliance with the WDRs. c. A scaled treatment plant site plan. d. A scaled map showing the limits of all proposed wastewater treatment, storage and disposal areas. 5. Characterization of the source water(the community or process water supply), influent wastewater quality (prior to treatment or discharge), and treated effluent quality. See Table 1 for a minimum list of constituents to be analyzed. 6. For POTWs and domestic wastewater facilities, a description of the sewer system, sewer materials and age, and lift station details (type, location, capacity, backup systems, and alarm features). Discuss potential inflow and infiltration (1/1) rates in light of local groundwater conditions and sewer system materials/design. For industrial facilities, a description of the industrial wastewater collection and conveyance system. 7. A description of proposed alarm systems, emergency wastewater storage facilities, and other means of preventing treatment system bypass or failure during reasonably foreseeable overload conditions (e.g., peak flows, power failure, sewer blockage). Consider both potential problems at the treatment system and within the conveyance system.