Statutes, codes, and regulations
Delaware Administrative Code
Title 7 - Natural Resources and Environmental ControlDivision of WaterGroundwater Discharges Section
Guidance and Regulations Governing the Land Treatment of Wastes
Section 7103-60.0 - Table 202-1 Design Development Report Information

7 Del. Admin. Code § 7103-60.0

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Current through Register Vol. 28, No. 4, October 1, 2024
Section 7103-60.0 - Table 202-1 Design Development Report Information
60.1
60.1.1 Site Description:
60.1.2 Location map
60.1.3 Climate
60.1.4 Geology (including subsurface hydrology)
60.1.5 Topography
60.1.6 Access
60.1.7 Wells within 2500 L.F. of facility
60.1.8 Groundwater quality background data
60.2 Scaled drawing with 2-foot elevation contours showing the preliminary site layout including:
60.2.1 Preapplication treatment facility
60.2.2 Storage pond(s)
60.2.3 Spray fields
60.2.4 Buffer zones
60.2.5 Soil investigation locations
60.2.6 Access roads and utilities
60.2.7 Watercourses
60.2.8 Monitor well locations
60.2.9 Drainage structures
60.2.10 Flood elevations
60.2.11 Residences and habitable structures within or contiguous to the site
60.3 Design wastewater characteristics, influent to preapplication treatment facility and treated effluent to spray fields (specific industrial-type wastewaters and some vegetation management schemes may require different or additional characterization):
60.3.1 Average and peak daily flows
60.3.2 Biochemical Oxygen Demand (for preapplication facility management)
60.3.3 Chemical Oxygen Demand (for land treatment system management)*
60.3.4 Total Organic Carbon
60.3.5 Total Suspended Solids
60.3.6 Ammonia, Total Kjeldahl and Nitrate and Nitrite Nitrogen
60.3.7 Total Phosphorus
60.3.8 Chloride
60.3.9 Sodium Adsorption Ratio (when appropriate)
60.3.10 Electrical Conductivity
60.3.11 Metals
60.3.12 Priority Pollutants**
60.3.13 pH
60.4 Detailed Soil Investigation Report (reference Table 202-2).
60.5 Water Balance/determination of design wastewater loading(s).
60.6 Nitrogen Balance/selection of cover crop and management scheme.
60.7 Phosphorus and other constituent loading rates 60.8 Determination of land limiting constituent (LLC).
60.9 Determination of wetted field area(s) and required storage volume.
60.10 Process design for preapplication treatment facility.
60.10.1 Schematic of pump stations and unit processes
60.10.2 Basin volumes, loading rates, hydraulic detention times, storage capacities, etc.
60.10.3 Capacity of pumps, blowers and other mechanical equipment
60.11 Groundwater and Effluent Monitoring Plan
60.12 Proposed trust indenture for Department approval (for private domestic wastewater irrigation systems)
60.13 *Chemical Oxygen Demand or Total Organic Carbon may be substituted for industrial wastewaters where appropriate.
60.14 **Priority pollutant analysis is required for all industrial wastewaters and municipal wastewater systems that receive industrial process wastes. The analyses required depend on the particular process wastewater being discharged and will be determined on a case-by-case basis. However, in all cases the presence of industrial process wastewaters must be identified. A current listing of the 126 priority pollutants can be found by referencing 40 CFR Part 423, Appendix A, 1987.
60.15 All design calculations must be submitted. Details and an example of the determination of needed land area and site life are given in the Guidance Section for Slow Rate Land Treatment and in Subsection 703, Example Calculations.

THIS TABLE IS NOT AN EXHAUSTIVE LISTING OF ALL REQUIREMENTS FOR OBTAINING A SPRAY IRRIGATION PERMIT. PLEASE REVIEW ALL PARTS OF THESE REGULATIONS PRIOR TO SUBMISSION OF A DDR.

7 Del. Admin. Code § 7103-60.0