Design fows for other establishments are determined by methods in items A to C. Measured fow values must be used for design fows when they are higher than the estimated fow values from table I.
TABLE I
ESTIMATED DESIGN SEWAGE FLOW FROM OTHER ESTABLISHMENTS
(1) Dwelling units (also see outdoor recreation) | Unit | Design fow (gal/ day/unit) |
(a) Hotel or luxury hotel | guest | 55 |
square foot | 0.28 | |
(b) Motel | guest | 38 |
square foot | 0.33 | |
(c) Rooming house | resident | 45 |
add for each nonresident meal | 3.3 | |
(d) Daycare (no meals) | child | 19 |
(e) Daycare (with meals) | child | 23 |
(f) Dormitory | person | 43 |
(g) Labor camp | person | 18 |
(h) Labor camp, semipermanent | employee | 50 |
(2) Commercial/Industrial | ||
(a) Retail store | square foot | 0.13 |
customer | 3.8 | |
toilet | 590 | |
(2) Commercial/Industrial | ||
(b) Shopping center | employee | 11.5 |
square foot | 0.15 | |
parking space | 2.5 | |
(c) Ofce | employee/8-hour shift | 18 |
square foot | 0.18 | |
(d) Medical ofce* | square foot | 1.1 |
practitioner | 275 | |
patient | 8 | |
(e) Industrial building* | employee/8-hour shift | 17.5 |
employee/8-hour shift with showers | 25 | |
(f) Laundromat | machine | 635 |
load | 52.5 | |
square foot | 2.6 | |
(g) Barber shop* | chair | 68 |
(h) Beauty salon* | station | 285 |
(i) Flea market | nonfood vendor/space | 15 |
limited food vendor/space | 25 | |
with food vendor/space | 50 | |
(3) Eating and drinking establishments | ||
(a) Restaurant (does not include bar or lounge) | meal without alcoholic drinks | 3.5 |
meal with alcoholic drinks | 8 | |
seat (open 16 hours or less) | 30 | |
seat (open more than 16 hours) | 50 | |
seat (open 16 hours or less, single service articles) | 20 | |
seat (open more than 16 hours, single service | 35 | |
articles) | ||
(b) Restaurant (short order) | customer | 7 |
(c) Restaurant (drive-in) | car space | 30 |
(d) Restaurant (carry out, including caterers) | square foot | 0.5 |
(e) Institutional meals | meal | 5.0 |
(f) Food outlet | square foot | 0.2 |
(g) Dining hall | meal | 8.5 |
(h) Cofee shop | customer | 7 |
(i) Cafeteria | customer | 2.5 |
(j) Bar or lounge (no meals) | customer | 4.5 |
seat | 36 | |
(4) Entertainment establishments | ||
(a) Drive-in theater | car stall | 5 |
(b) Theater/auditorium | seat | 4.5 |
(c) Bowling alley | alley | 185 |
(d) Country club | member (no meals) | 22 |
member (with meals and showers) | 118 | |
member (resident) | 86 | |
(e) Fairground and other similar gatherings | visitor | 1.5 |
(f) Stadium | seat | 5 |
(g) Dance hall | person | 6 |
(h) Health club/gym | member | 35 |
(5) Outdoor recreation and related lodging facilities | ||
(a) Campground | campsite with sewer hook-up (per person) | 32 |
campsite with sewer hook-up (per site/space) | 100 | |
campsite without sewer hook-up, with central toilet or shower facility (per site) | 50 | |
campsite without sewer hook-up, with central toilet or shower facility, served by central dump station (per site) | 63 | |
(b) Permanent mobile home | mobile home | 225 |
(c) Camp, day without meals | person | 20 |
(d) Camp, day with meals | person | 25 |
(e) Camp, day and night with meals | person | 45 |
(f) Resort/lodge hotel | person | 62 |
(g) Cabin, resort | person | 50 |
(h) Retail resort store | customer | 4 |
(i) Park or swimming pool | guest | 10 |
(j) Visitor center | visitor | 13 |
(6) Transportation | ||
(a) Gas station/convenience store | customer | 3.5 |
(b) Service station* | customer | 11 |
service bay | 50 | |
toilet | 250 | |
square foot | 0.25 | |
(c) Car wash* (does not include car wash water) | square foot | 5 |
(d) Airport, bus station, rail depot | passenger | 5 |
square foot | 5 | |
restroom | 565 | |
(7) Institutional | ||
(a) Hospital* | bed | 220 |
(b) Mental health hospital* | bed | 147 |
(c) Prison or jail | inmate | 140 |
(d) Nursing home, other adult congregate living | resident | 125 |
(e) Other public institution | person | 105 |
(f) School (no gym, no cafeteria, and no showers) | student | 14 |
(g) School (with cafeteria, no gym and no showers) | student | 18 |
(h) School (with cafeteria, gym, and showers) | student | 27.5 |
(i) School (boarding) | student | 95 |
(j) Church | seat | 4 |
add for each meal prepared | 5 | |
(k) Assembly hall | seat | 4 |
(8) Miscellaneous | ||
(a) Public lavatory | user | 5 |
(b) Public shower | shower taken | 11 |
* Waste other than sewage is only allowed to be discharged into the system if the waste is suitable to be discharged to groundwater.
If concentrations from the sewage tank to the soil dispersal system are expected to be higher than 170 mg/l BOD (or 125 mg/l CBOD5), 60 mg/l TSS, or 25 mg/l of oil and grease, an estimated or measured average concentration must be determined and be acceptable to the local unit of government. System design must account for concentrations of these constituents so as not to cause internal system malfunction, such as, but not limited to, clogging of pipes, orifices, treatment devices, or media.
Minn. R. Part 7081.0130
Statutory Authority: MS s 115.03; 115.55