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Lake County, IL Code of Ordinances
LAKE COUNTY, ILLINOIS CODE OF ORDINANCES
ADOPTING ORDINANCE
TITLE I: GENERAL PROVISIONS
TITLE III: ADMINISTRATION
TITLE V: PUBLIC WORKS AND SOLID WASTE
TITLE VII: TRAFFIC CODE
TITLE IX: GENERAL REGULATIONS
TITLE XI: BUSINESS REGULATIONS
TITLE XIII: GENERAL OFFENSES
TITLE XV: LAND USAGE
TITLE XVII: HEALTH
TABLE OF SPECIAL ORDINANCES
PARALLEL REFERENCES
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§ 171.145 GRAVEL PLACEMENT.
   (A)   Minimum requirements. Gravel shall be placed in soil treatment trenches as follows:
      (1)   Gravel depth. The depth of gravel specified below the distribution pipe shall be uniform, and of the minimum depth specified in §§ 171.100 through 171.111.
      (2)   Placement. The gravel shall be placed carefully to avoid compaction of the infiltrative surface.
      (3)   Gravel/piping. Gravel shall be placed around the distribution piping and covering the piping a minimum of two inches.
      (4)   Covering. The top of the gravel shall be covered with geotextile fabric prior to backfilling. Other approved barrier materials may be used except when geotextile fabric is specifically required in §§ 171.100 through 171.111.
(Ord. [Bd of Health Ord., Art. V], passed 11-12-1996; Ord. [Bd of Health Ord., Art. V], passed 11-12-2013)
§ 171.146 PIPING INSTALLATION.
   (A)   Minimum requirements. All piping installed for onsite wastewater treatment systems shall be uniformly supported, sloped as appropriate, and otherwise installed as established in this section.
   (B)   Building sewers. Building sewers shall be sloped not less than one-eighth inch per foot, nor more than one-quarter inch per foot.
   (C)   Connections. All piping shall be connected, solvent joined, or attached with an appropriate adapter as acceptable for the material to ensure that connections do not separate or allow the leakage of wastewater or infiltration of groundwater.
   (D)   Sealing openings for piping. An opening for piping entering or exiting septic tanks, pretreatment components, lift stations, distribution devices, or other system components shall be sealed and shall be water tight.
   (E)   Pressure pipe connections. Pipe connectors and fittings on pressure supply lines, manifolds, or lateral distribution pipes shall be pressure connectors or fittings.
   (F)   Connections to distribution and drop boxes. Pipe directly connected to distribution and drop boxes shall be rigid, non-corrugated, non-perforated pipe extending into the soil treatment area as specified by § 171.103(A)(4).
(Ord. [Bd of Health Ord., Art. V], passed 11-12-1996; Ord. [Bd of Health Ord., Art. V], passed 11-12-2013)
§ 171.147 BACKFILLING.
   (A)   Minimum requirements. Backfilling operations shall be conducted as established by this section. Backfill and topsoil cover materials shall meet the specifications established by § 171.167.
      (1)   Weather conditions. Backfill material shall not be frozen or contain wet soil clods.
      (2)   Timing. Backfilling and covering shall be completed as soon as practical after the construction or installation of the system component.
      (3)   Drainage. The grade established by backfilling and covering shall direct stormwater away from system components and the soil treatment area.
      (4)   Placement around system components. Backfill for excavations of tanks, distribution devices, piping, etc., shall be carefully placed to avoid displacing the system components. The backfill material shall be tamped or compacted to secure the system components and minimize settling.
      (5)   Placement in soil treatment area. Backfill and/or cover for soil treatment components shall be carefully placed to avoid displacing the barrier material.
      (6)   Equipment traffic. Backfill or cover shall be placed with a minimum of equipment traffic.
      (7)   Reserve soil treatment areas and prohibitive disturbance areas. No traffic shall be allowed on reserve soil treatment areas or prohibitive disturbance areas.
(Ord. [Bd of Health Ord., Art. V], passed 11-12-1996; Ord. [Bd of Health Ord., Art. V], passed 11-12-2013)
§ 171.148 ACCESSORIES.
   (A)   Minimum requirements. Devices and piping employed for the distribution of wastewater into soil treatment components or regulating the flow of wastewater shall be constructed, installed or equipped as established in this section.
      (1)   Equal flow distribution box. When an equal flow distribution box is used to direct wastewater flow to two or more wastewater conveyance pipes, the invert elevation of all outflow pipes shall be leveled with a pre-manufactured cap specifically designed to adjust the flow line of distribution box piping.
      (2)   Perforations. Perforations drilled into low pressure wastewater distribution pipe shall be carefully placed along a straight line, and drilled perpendicular to the apex of the pipe.
      (3)   Other components. Diversion valves, flow control valves, effluent filters or any other component that is located outside of a septic tank or other enclosed buried system component shall be provided with access to final grade sufficient to allow applicable adjustment or maintenance as required.
      (4)   Audio-visual alarm. Pumps, aerobic treatment units, or other mechanical systems shall be provided with an audio-visual alarm, either inside or outside a structure. Electrical wiring and connections shall conform to the current National Electric Code.
(Ord. [Bd of Health Ord., Art. V], passed 11-12-1996; Ord. [Bd of Health Ord., Art. V], passed 11-12-2013; Ord. 17-0605, passed 6-13-2017)
§ 171.149 INSPECTIONS.
   (A)   Minimum requirements. Inspections of the construction and/or installation of an onsite wastewater treatment system, or component thereof, and the building served shall be conducted by the Health Officer to determine compliance with the requirements of this chapter.
   (B)   Inspection request. A request for an inspection shall be made by the licensed installation contractor.
   (C)   Required system construction inspections. The following inspections are required by the Health Officer prior to issuing final approval:
      (1)   Soil preparation. Inspection of the plowed surface of the soil treatment area prior to the placement of gravel.
      (2)   System components. System components shall remain sufficiently uncovered so as to allow adequate inspection. Inspections of the following components of the onsite wastewater treatment system shall be conducted:
         (a)   Building sewer material, tank manufacturers, tank capacities, risers, connecting piping;
         (b)   Selected locations along a force main including the lift station outlet;
         (c)   Presence and operation of pumps, switches, high water floats, control panels, timers, and audiovisual alarms;
         (d)   Pressure test of distribution piping network;
         (e)   Size of soil treatment component, quality of gravel, distribution components, gravel cover;
         (f)   Final soil cover quality, depth, grading, seeding, mulching.
   (D)   Required building inspections. When applicable, inspections of the following areas of the building served shall be conducted to verify conformance with the approved site and building plan(s).
      (1)   Residential. A count of the number of bedrooms, as defined in § 171.021, and an inspection of discharge points of clear water discharges listed in § 171.100(D).
      (2)   Non-Residential. Floor plan arrangement and an inspection of discharge points of clear water discharges listed in § 171.100(D).
   (E)   Other inspections. The Health Officer may require or conduct any other inspections as may be determined to be necessary.
   (F)   Nonconforming parts. When, during an inspection, the Health Officer identifies defective material or parts that do not conform to the requirements of this chapter, the defective material or nonconforming parts shall be removed, replaced with conforming material or parts, and if required by the Health Officer, re-inspected.
   (G)   Un-workmanlike construction. When, during an inspection, the Health Officer identifies un-workmanlike construction that does not conform to the requirements of this chapter, the un-workmanlike construction shall be corrected, and if required by the Health Officer, re-inspected.
   (H)   Final approval. No onsite wastewater treatment system shall be placed into service without the final written approval of the Health Officer.
(Ord. [Bd of Health Ord., Art. V], passed 11-12-1996; Ord. [Bd of Health Ord., Art. V], passed 11-12-2013; Ord. 17-0605, passed 6-13-2017)
MATERIALS
§ 171.160 GENERAL.
   (A)   Minimum requirements. All materials used in the construction or installation of onsite wastewater treatment systems or system components shall be at least to the minimum specifications of this chapter.
   (B)   Approval. All materials, equipment and devices approved for use shall be constructed and installed in accordance with such approval.
   (C)   Technical data. The Health Officer may require that sufficient technical data be submitted to substantiate the proposed use of any material or assembly, and if it is determined that the evidence submitted is satisfactory proof of performance for the use intended, the Health Officer shall approve its use, subject to the requirements of this chapter. The costs of all tests, reports and investigations required under these provisions shall be paid by the applicant.
(Ord. [Bd of Health Ord., Art. V], passed 11-12-1996; Ord. [Bd of Health Ord., Art. V], passed 11-12-2013)
§ 171.161 PRETREATMENT COMPONENTS.
   (A)   Septic tanks. A septic tank used in an onsite wastewater treatment system shall meet the minimum standards for construction established in the Illinois Private Sewage Disposal Code and in this chapter.
   (B)   Aerobic treatment units. An aerobic treatment unit used in an onsite wastewater treatment system shall be listed and labeled by an ANSI accredited third party testing and certification organization as a Class I unit. An accompanying septic/trash tank shall be sized in accordance with the aerobic unit manufacturer recommendations.
   (C)   Effluent filters. An effluent filter used in an onsite wastewater treatment system shall be designed for the specific purpose of filtering septic tank effluent and shall be designed and installed to be easily maintained.
   (D)   Exterior grease interceptor. When the Health Officer determines that the wastewater stream will contain significant quantities of fats, oil and grease (FOG) such as from food processing establishment, food service establishment licensed by the Lake County Health Department or other kitchen operations more intensive than residential, an exterior grease interceptor (EGI) designed as described in this section shall be installed.
      (1)   Wastewater segregation. The wastewater shall be segregated so that only wastewater from kitchen/food operations shall be discharged to the exterior grease interceptor. The EGI shall receive the entire waste discharge from kitchens or food processing areas.
      (2)   Capacity and sizing. The minimum capacity shall be 1,000 gallons or greater as calculated below:
         (a)   Restaurant. The minimum capacity of an exterior grease interceptor serving a restaurant shall be equal to C when:
C = S x H x A
      S = number of seats (in lieu of, or in addition to seats, each drive-in car service space shall count as 3 seats, and each drive-up service window shall count as 60 seats)
      H = hours per day that meals are served (minimum of 6 hours; maximum 12 hours)
      A = Appliance factor: 0.75 for a kitchen with no dishwashing and no food waste grinder; 1.0 for a kitchen with either a dishwashing machine or a food waste grinder; 1.25 for a kitchen with both a dishwashing machine and a food waste grinder.
         (b)   Other food service. The minimum capacity of an exterior grease interceptor serving a dining hall, hospital, nursing home, school kitchen, church kitchen or a kitchen for carryout or delivery service shall be equal to C when:
C = (M x G x H)/2 x P
      M = meals served per day
      G = 3 gallons per meal served
      H = hours per day that meals are served at least 6 hours but not more than 12 hours
      P = meal periods per day, 1, 2 or 3.
      (3)   Tank design specifications. The exterior grease interceptor shall meet the construction standards of a septic tank as established in the Illinois Department of Public Health Private Sewage Disposal Code, § 905.40, and shall be modified as follows:
         (a)   Inlet/outlet. The inlet and outlet openings shall be provided with open-end sanitary tee fittings or baffles, designed and constructed to distribute the flow and retain the grease in the tank or tank compartments. The sanitary tee fitting or baffle at the inlet opening shall extend below the liquid level of the tank a distance equal to one-third of the total liquid depth. The sanitary tee fitting or baffle at the outlet opening shall extend below the liquid level of the tank a distance equal to two-thirds of the total liquid depth.
         (b)   Orientation. The longest dimension of the tank shall be set parallel to the direction of flow.
         (c)   Openings. Only watertight openings shall be used for the inlet and outlet piping.
         (d)   Setbacks. The setback distances in Appendix D shall apply to the placement of an exterior grease interceptor.
         (e)   Effluent flow. The effluent from an exterior grease interceptor shall be merged with the remaining flow from the facility at a point after primary treatment of that flow and before any additional treatment.
      (4)   Inspections and pumping. The owner of an exterior grease interceptor shall assure that the exterior grease interceptor is inspected and pumped as necessary to ensure its proper function.
   (E)   Media filters. If used, proprietary media filters shall be used in accordance with manufacturer’s applications.
(Ord. [Bd of Health Ord., Art. V], passed 11-12-1996; Ord. [Bd of Health Ord., Art. V], passed 11-12-2013; Ord. 24-1005, passed 8-13-2024)
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