Cooperative Extension Service

Management of Alternative On-Site Wastewater Systems - A Case Study

S#LocationTreatmentDisposal
111 R colburn St.
Map # 157, Lot# 34
Total Area = 7,320
3 Bedroom
Recirculating Sand Filter
22'X5' filter bed
24" of Coarse Sand
Loading Rate = 3 1,000 Gal. ST
Infiltrator-Pressure Dosed Bed
Bottom 36" Below Ground
18.75' X 18' Bed; 18 Units
Loading Rate = 0.98
262 High St.
Map #153, Lot #50
Total Area=18,150
4 Bedroom
Bio-Clere
Model #1612
1,000 Gal. ST
Pressure Dosed Bed
Bottom 24" Below Ground
40' X 12' Bed; 3 Pipes
Loading Rate = 0.98
343 Langsford St.
Map #152, Lot #11
Total Area=8,250
4 Bedroom
Recirculating Sand Filter
30' X 5' filter bed
Recirc. Rate = 5:1
Loading Rate = 2.9,
1,000 Gal. ST
Infiltrator-Pressure Dosed Bed
Bottom 36" Below Ground
31.25' X 15' Bed; 25 Units
Loading Rate = 0.94
410 Vale Ct.
Map #138, Lot #25
Total Area=25,100
5 Bedroom
Bio-Clere
Model #1612
Two 1,000Gal. ST(one w/EF)
Infiltrator-Pressure Dosed Bed
Raised Bed;48" Fill;
62.5' Bed;25 Units
Loading Rate = 0.98
57 Bittersweet Rd.
Map #117, Lot #28
Total Area=28,360
3 Bedroom
Waterloo Biofilter
6' X 6' Filter and 4' deep media
Single pass, with ability to recirc.
Loading Rate = 9.2;
1,500 Gal. ST w/Ef PC
Gravity Trenches (2 pipes);
Bottom 48" Below Ground;
90' X 4';D-Box in the middle
Loading Rate = 0.92
617 Brierwood St.
Map #125, Lot #41
Total Area=10,000
3 Bedroom
ORENCO Rec. Trickling Filter
RTF Installed in the ST
1,500 Gal. ST w/EF PC
Sand-Lined Bed (Insulated);
Bottom 24" Below Ground;
65' X 5';12" of sand
Loading Rate = 1.02
71166 Washington St.
Map #151, Lot #31
Total Area=20,963
3 Bedroom
ORENCO Intermttent Sand Filter;
100 ft.2; Single Pass Filter
Loading rate = 3.3
1,500 Gal. ST w/EF PC
Shallow Trenches (3 total);
Bottom 15" Below Ground;
50' X 1' each 150 ft.2
Loading Rate = 2.2-6.6


Please address any questions to Dr. David Lindbo, Assistant Professor, Extension Specialist.


This page (http://www.ces.ncsu.edu/plymouth/septic/table1.html) created by
Vera MacConnell, Research Technician, I on November 15, 1996.
Last Updated on June 4, 1999.


Return to On-Site 1996 Page