1. Each residence shall be defined as one ERU. Each residential unit in a multifamily structure shall be considered a 0.8 ERU. ERU determinations for commercial and industrial uses will be based on the type of building and sewer use per Table 13.08.020, ERU Determination Alternative, of this section.

2. The GFC charge for new sewer connection or expanded sewer service shall be determined by multiplying the GFC times the total number of ERUs.

1. “Single-family residence” is defined as a building containing one kitchen, designed and/or used to house not more than one family, including all necessary employees of such family, such building having a single sewer service connection. Manufactured homes occupying a separate lot and providing permanent housing with a separate sewer connected shall be classified as a single-family residence.

2. “Multiple-family residence” is defined as a building or a group of buildings housing three or more families, living independently of each other, a family being defined as one or more persons living as a single housekeeping unit or household with sewer service being provided through not more than one sewer connection. Common buildings in an apartment house complex requiring sewer service shall be charged as commercial buildings and that portion of buildings housing common laundry facilities shall be charged as laundries and Laundromats.

3. “Manufactured home park,” including travel trailer parks, is defined as any area or tract of land having a sewer connection, and where sewerage collection pipes are extended to two or more spaces occupied by, or intended to be occupied by a manufactured home, travel trailer or motor home, which is defined as a vehicle with or without motive power that is designed, used or intended for use as a place of human habitation, or as eating, sleeping or living quarters or any combination thereof. “Manufactured home space” is defined as the individual location having a sewer hookup for each such vehicle. For purposes of determining the GFCs for manufactured home parks' common buildings such as recreation halls, etc., shall be charged as commercial buildings. Buildings housing laundry facilities shall be charged as laundries and Laundromats and food or drink service buildings shall be charged as food preparation and/or serving.

4. “Recreation vehicle waste dumping stations” are defined as buildings or structures used for the dumping of sanitary sewer wastes from recreational vehicle holding tanks. Includes gray water from sinks and showers. (This excludes an individual collector installed by a homeowner for his or her own use.)

5. “Schools” are defined as any building or group of buildings used for school purposes more than twelve hours per week, involving assemblage for instruction, education or recreation. Schools may be public or private.

6. “Church” is defined as a building or structure whose principal use is for worship and in which the incidental use for school or recreational purposes is less than twelve hours per week. Church buildings used for school purposes in excess of twelve hours per week shall be charged the GFC per student capacity in addition to the charge per one hundred seats as a church.

7. “General hospital” is defined as a building or structure used for the temporary housing of ill or injured persons and containing facilities for medical and surgical treatment of such persons. No additional charge shall be made for laundry and food and drink preparation and serving facilities included in hospitals.

8. “Convalescent hospital” or “rest home” is defined as a building or structure used for housing of persons convalescing from illness or injury or persons requiring close personal care. No additional charge shall be made for laundry or food and drink preparation and serving facilities included in the convalescent hospitals.

9. “Residential care/boarding facility” is defined as a residential building or structure used for housing of persons requiring either long-term supervision and general care, or any type of dependency recovery. No additional charge shall be made for laundry or food and drink preparation and serving facilities included in the residential care/boarding facility.

10. “Hotel” and “motel” are defined as a building or group of buildings used for temporary housing of persons containing rooms or units intended for the use of transient persons. Those areas within hotels and motels to be used for commercial preparation of food and drink shall be charged at the rate for food preparation and/or serving. Commercial areas within hotels and motels, including convention facilities and other such common areas other than lobby areas, shall be charged at the rate for commercial and dry industrial areas. Areas used for laundry facilities in hotels and motels shall be charged at the rate for laundries and Laundromats. Such additional charges for food and drink, commercial areas and laundry shall be in addition to the charge per room or motel unit.

11. “Food preparation and serving” includes restaurants, taverns, delicatessens and wholesale and retail bakeries, but does not include canneries, dairies, cheese factories, packing houses and similar facilities, which shall be classified as “Wet industrial” under Item 15.

12. “Vehicle washes” are defined as commercial buildings or structures used for washing vehicles. Self-service vehicle washes are coin-operated facilities serving the general public that require the customer to wash the vehicle. Full-service vehicle washes are facilities serving the general public, wherein the vehicle is washed for the customer, either automatically or by attendants. All other vehicle and parts washing or steam-cleaning facilities that discharge to the sanitary sewer will be reviewed on a case-by-case basis.

13. “Laundries and Laundromats” are defined as commercial buildings and structures, or parts of commercial buildings and structures, used for housing and operating laundry equipment by the general public to wash clothes and linens for personal use.

“Industrial laundries” are defined as buildings or structures or parts of buildings and structures used for housing and operating laundry equipment for the large-scale washing of uniforms, towels, linens, etc. The anticipated volume and strength of the sewage to be generated from an industrial laundry would be considerably more than that from a commercial laundry or Laundromat. Industrial laundries shall be classified as “Wet industrial” under Item 15.

14. “Commercial buildings” are defined as all buildings used for conducting of wholesale or retail trade. Dry industrial buildings or structures are those buildings or structures housing light industrial activities where use of water and subsequent discharge of sewer does not occur in connection with the industrial process. Warehouses and other storage buildings with sewer connections are classified as dry industrial buildings.

15. “Wet industrial buildings” are defined as those buildings and structures housing industrial activities where the use of water and subsequent discharge to the sewer occurs in connection with an industrial process. Facilities with a discharge of fifteen thousand gallons per day or greater are considered wet industrial. Other facilities that discharge less than fifteen thousand gallons per day, and whose anticipated strength of the sewage to be generated from the facility is greater than domestic sewage strengths, may also be considered wet industrial. Those facilities will be reviewed on a case-by-case basis. The anticipated volume and strength of sewage from an average single-family residence shall be considered when calculating GFC.

The GFC for wet industrial shall be determined on an individual basis using the formula listed below:

G.P.D. = Anticipated volume of discharge to sewer in gallons per day

SFR = Current system development charge for single

F = Extra strength factor, a number multiplier which is greater than or equal to 1, based on a single-family residential maximum biochemical oxygen demand (BOD) or total suspended solids (TSS) of 300 mg/1, where:

F = Annual Average BOD or TSS (mg/1) ÷ 300 mg/1

Example:

16. Undefined buildings and sewer use are those not defined above.

17. “Additional loading” or “change of use” is defined as an increased demand for wastewater treatment from an existing wet industrial building or structure. The additional loading may be the result of replacement or addition to an existing structure or facility, a change in use, or a fifteen percent or greater increase above the permitted volume or character of the wastewater constituents being discharged.

ERUs shall be determined on the basis of the number of single-family residence equivalent units with the additional loading or the new use with credit being given for the number of single-family residence equivalent units of the original facility. No refund will be given if the change of use results in a decreased sewer loading. Any addition to an existing single-family residence which does not result in an additional dwelling will be exempt from additional charge. (Ord. 3059 § 1 (Exh. A), 2019; Ord. 3023 § 1, 2018; Ord. 2756 Att. A, 2006; Ord. 2658 § 3, 2004; Ord. 2639 § 1, 2003; Ord. 2344 § 1, 1995; Ord. 2275, 1993; Ord. 2247 § 1, 1992; Ord. 2224 § 1, 1992: Ord. 2155 § 1, 1990: Ord. 2101 § 1, 1989: Ord. 2064 § 1, 1988; Ord. 2040 § 1, 1987: Ord. 1971 § 1, 1985: Ord. 1950 § 1, 1984: Ord. 1941 § 1, 1984: Ord. 1748 § 1, 1978: Ord. 1601 § 2, 1973: Ord. 1150 § 4, 1954)