1. (a) An owner shall submit the report for any proposed collection system or treatment facility or proposed material alteration or expansion to an existing collection system or treatment facility.
2. (b) The report must include the signed and dated seal of the engineer responsible for the report.
3. (c) The report must demonstrate compliance with this chapter or justify variances from this chapter in accordance with §217.4 of this title (relating to Variances) by including all pertinent calculations, analyses, graphs, formulas, constants, tables, geologic information, hydraulic and hydrological information, historical data, and technical assumptions.
4. (d) If the executive director requests additional information for the report, an owner shall submit the requested information prepared, signed, and sealed by an engineer, within 30 days after receiving a request.

5. (e) The report for a wastewater collection system must include the following:

   1. (1) a map showing the current service area, the proposed service area, and any area proposed for future expansion;
   2. (2) the topographical features of the current, the proposed, and any future service areas;
   3. (3) a description of how the design flow was determined;
   4. (4) the minimum and maximum grades for each size and type of pipe;
   5. (5) calculations of expected minimum and maximum velocities in the system for each size and type of pipe;
   6. (6) the proposed system's effect on an associated existing system's capacity;
   7. (7) the existing and anticipated inflow and infiltration, the hydraulic effect of the inflow and infiltration on the proposed and existing systems, any inflow and infiltration flow rate monitoring, and any inflow and infiltration abatement measures;
   8. (8) a description of the ability of the existing and proposed trunk and interceptor wastewater collection systems and lift stations to handle the peak flow;
   9. (9) the capability of the receiving treatment facility to receive and adequately treat the anticipated peak flow;
   10. (10) an engineering analysis showing compliance with structural design, minimization of odor-causing conditions, and the pipe design requirements of §217.55 of this title (relating to Manholes and Related Structures);
   11. (11) a description of the areas not initially served by a project, and the projected means of providing service to these areas, including special provisions incorporated in the present plans for future expansion;
   12. (12) the calculations and curves showing the operating characteristics of all system lift stations at minimum, maximum, and design flows during both present and future conditions; and
   13. (13) the safety considerations incorporated into a project design, including ventilation, entrances, working areas, and explosion prevention.

6. (f) The report for a wastewater treatment facility must include the following:

   1. (1) The quantity and characteristics of any existing wastewater influent, any proposed changes, and any anticipated changes.

   2. (2) If adequate records are not available, analyses must be made of the existing conditions, and the results included in the report, including:

      1. (A) a map of the proposed facility and the area surrounding the facility, the area included in the facility site, the area that makes up the buffer zone, any 100-year flood event floodway or floodplain, and the discharge route or land application unit;
      2. (B) a description of the surrounding area that includes prevailing winds, water treatment facilities, water supply wells, surface water intakes, present and proposed housing developments, present and proposed industrial sites, present and proposed highways and streets, present and proposed parks, present and proposed schools, present and proposed recreational areas, and present and proposed shopping centers;
      3. (C) documentation of compliance with the buffer zone criteria and the 100-year floodplain restrictions specified in §309.13 of this title (relating to Unsuitable Site Characteristics);

      4. (D) a sludge management plan, including:

         1. (i) the estimated quantity and quality of sludge that will be generated, including future sludge loads based on flow projections;
         2. (ii) the sludge treatment requirements for ultimate disposal, and the sludge storage requirements for each alternative;
         3. (iii) a method of sludge transport, use, storage, and disposal; and
         4. (iv) the alternatives, contingencies, and mitigation plans that ensure reliable capacity and operational flexibility.

      5. (E) The methods to control bypassing, including:

         1. (i) information and data describing features to prevent bypassing such as auxiliary power, standby and duplicate units, holding tanks, storm water clarifiers, or flow equalization basins; and
         2. (ii) operational arrangements such as flexibility of pipes and valves to control flow through the treatment units and reliability of power sources to prevent unauthorized discharges of untreated or partially treated wastewater.

      6. (F) information and calculations demonstrating the facility's compliance with the design requirements of this chapter, including:

         1. (i) the types of units proposed and their capacities;
         2. (ii) the detention times, surface loadings, and weir loadings pertinent to each wastewater treatment unit; and

         3. (iii) hydraulic profiles for wastewater and sewage sludge that include:

            1. (I) a plot of the hydraulic gradient at peak flow conditions for all gravity lines;
            2. (II) the anticipated operation mode of the facility;
            3. (III) organic and volumetric loadings pertinent to each unit; and
            4. (IV) aeration demands and how those demands will be supplied.

Source Note:The provisions of this §217.10 adopted to be effective August 28, 2008, 33 TexReg 6843.