Loading...
Table III: Minimum Liquid Capacities for Septic Tanks Serving Residential Units | ||
Number of Bedrooms | Minimum Liquid Capacity of Tank (Gallons) | Minimum Liquid Capacity of Tank (Gallons) When Garbage Grinder Is Used |
Table III: Minimum Liquid Capacities for Septic Tanks Serving Residential Units | ||
Number of Bedrooms | Minimum Liquid Capacity of Tank (Gallons) | Minimum Liquid Capacity of Tank (Gallons) When Garbage Grinder Is Used |
2 or less | 1000 | 1500 |
3 | 1250 | 2000 |
4 | 1500 | 2200 |
5 | 1750 | 2600 |
6 | 2000 | 3000 |
7 | 2250 | 3375
|
(Ord. O-201711-51-031, passed 11-14-2017)
Table IV: Minimum Separations 1 | |||||||||
Component Part of System | I Well or Suction Line from Pump to Well | II Water Supply Line3 Pressure | III Lake, Stream, Retention Pond, or Other Body of Water | IV Dwelling with or without attached garage | V Property Line | VI Field Drain Line/ Curtain Drain | VII Inground Swimming Pool | VIII Accessory Structure or Above Ground Swimming Pool | IX Sealed Wells |
Table IV: Minimum Separations 1 | |||||||||
Component Part of System | I Well or Suction Line from Pump to Well | II Water Supply Line3 Pressure | III Lake, Stream, Retention Pond, or Other Body of Water | IV Dwelling with or without attached garage | V Property Line | VI Field Drain Line/ Curtain Drain | VII Inground Swimming Pool | VIII Accessory Structure or Above Ground Swimming Pool | IX Sealed Wells |
Building Sewer 2 |
50 | 10 | 25 | 10 | 25 | 10 | 10 | ||
Septic Tank or Aerobic Treatment Plant | 50 | -+10 | 25 | 5 | 5 | 10 | 25 | 5 | 10 |
Dist. Or Drop Box | 75 | 10 | 50 | 20 | 5 | 20 | 25 | 10 | 25 |
Subsurface Seepage System | 75 | 25 | 50 | 20 | 5 | 20 | 25 | 10 | 25 |
Sand Filter | 75 | 25 | 50 | 20 | 5 | 20 | 25 | 10 | 25 |
Privy or chemical toilet | 75 | 25 | 25 | 20 | 5 | 10 | 25 | 10 | NA |
Special Waste Holding Tank | 50 4 |
10 | 25 | 5 | 5 | 10 | 25 | 5 | 10 |
Subsurface Seepage System Classified as a Class V Injection Well | 200 | 25 | 50 | 20 | 5 | 20 | 25 | 10 | 25 |
Note: All measurements are in feet. | |||||||||
1. These distances have been determined for use in clay and loam soils only. The minimum distances required for use in sand or other types of soil shall be determined for the proposed private sewage disposal system and approved by this Department. Such approval will be given where the Department determines that the soil will provide treatment of the sewage. | |||||||||
2. The building sewer may be located to within 10 feet of a well or suction line from the pump to the well when cast iron pipe with mechanical joints or Schedule 40 PVC pipe with water-tight joints is used for the building sewer. | |||||||||
3. See Section 310. Septic system components shall maintain a minimum separation of 25 feet from drainage or stormwater detention easements for surface drainage or water collection or 15 feet from a conduit or pipe. | |||||||||
4. The minimum separation distance shall be 200 feet if the special waste holding tank meets the criteria of a potential secondary source as defined. | |||||||||
(Ord. O-201711-51-031, passed 11-14-2017)
Table V: Standards for Seepage Field Construction |
Table V: Standards for Seepage Field Construction | |
Trench length, maximum length from point of discharge into seepage trench | 100 feet |
Trench bottom, minimum width | 12 inches |
Trench bottom, maximum width | 36 inches |
Trench bottom, minimum depth | 18 inches |
Trench bottom, maximum depth | 36 inches |
Trench bottom, slope | level |
Distribution line, minimum diameter | 4 inches
1 |
Distribution line, minimum earth cover | 6 inches |
Distribution line, maximum earth cover | 24 inches |
Distribution line, maximum slope | level |
Distribution line, maximum length (from header line) | 100 feet |
1. Unless system is fed by means of pressurized distribution | |
(Ord. O-201711-51-031, passed 11-14-2018)
Table VI: Size and Spacing for Seepage Field Construction
| ||
Width of Trench at Bottom (inches) | Minimum Center to Center Spacing of distribution Lines (feet) | Effective Absorption Area Per Lineal Foot of Trench (square feet) |
12 | 6.0 | 1.0 |
18 | 6.0 | 1.5 |
24 | 7.0 | 2.0 |
30 | 8.0 | 2.5 |
36 | 9.0 | 3.0 |
(Ord. O-201711-51-031, passed 11-14-2017)
Table VII: Sizing of Aerobic Treatment Plants | |
Bedrooms | Minimum Rated Treatment Capacity - Gallons |
Table VII: Sizing of Aerobic Treatment Plants | |
Bedrooms | Minimum Rated Treatment Capacity - Gallons |
1 | 500 |
2 | 500 |
3 | 500 |
4 | 500 |
5 | 750 |
6 | 900 |
7 | 1000 |
8 | 1200 |
9 | 1350 |
10 | 1500 |
(Ord. O-201711-51-031, passed 11-14-2017)
Note: When circumstances exist which make impractical full compliance with the requirements of the Ordinance, an applicant may request a variance. Each variance request is reviewed in conjunction with the specific on-site conditions. It should not be assumed that a variance will automatically be granted. The following table provides general guidelines for variances which may be considered for private sewage disposal systems for new construction:
Septic System Component | Minimum Separation with a Variation Granted | ||||
Water Line Under Pressure | Dwelling | Property Line | Accessory Structure, Above Ground Swimming Pool, | Criteria |
Septic System Component | Minimum Separation with a Variation Granted | ||||
Water Line Under Pressure | Dwelling | Property Line | Accessory Structure, Above Ground Swimming Pool, | Criteria | |
Building Sewer | See Footnote 3 in Table IV | N/A | N/A | 5 feet | Amount of area available, location of adjacent dwellings, water wells, etc. |
Septic Tank | 5 feet | 2 1/2 feet | 2 1/2 feet | 2 1/2 feet | Amount of area available, location of adjacent dwellings, water wells, etc. |
Aerobic Treatment Unit | 5 feet | 2 1/2 feet | 2 1/2 feet | 2 1/2 feet | Amount of area available, location of adjacent dwellings, water wells, etc. |
Distribution or Drop Box | No variance | 10 feet 1 | 2 1/2 feet | 5 feet | Amount of area available, soil permeability, site topography, locations of adjacent dwellings, water wells, etc. |
Subsurface Seepage System | 12 1/2 feet | 10 feet 1 | 2 1/2 feet | 5 feet | Amount of area available, soil permeability, site topography, locations of adjacent dwellings, water wells, etc. |
1. Typically granted in moderate soil permeabilities where space is limited. Typically not granted in moderately rapid or rapid soil permeabilities, or when the septic system is upgradient of the dwelling. | |||||
(Ord. O-201711-51-031, passed 11-14-2017)
Gravelless & Chamber Dimensions | Minimum Center to Center Spacing of Distribution Lines |
8 inch - Inside Diameter of Gravelless Pipe System | 7.0 feet |
10 inch - Inside Diameter of Gravelless Pipe System | 7.0 feet |
12 inch Wide Chamber System | 7.0 feet |
Greater than 12 inch Wide Chamber System | 9.0 feet
|
(Ord. O-201711-51-031, passed 11-14-2017)
B. Table X - Perforation Discharge Rates
in Gallons per Minute Versus Perforation Diameter and In-Line Pressure
(Ord. O-201711-51-031, passed 11-14-2017)
Loading...