N.H. Code Admin. R. Env-Wq 1016.02
The bed size for conventional stone-and-pipe systems shall be determined by the number of bedrooms, percolation rates, and total sewage flow per day as set forth in Table 1016-1 below:
Table 1016-1: Bed Size for Conventional Stone and Pipe Systems
In Square Feet for Varying Loads And Percolation Rates
Percolation Rate in Minutes Per Inch
Residential - Number of Bedrooms
Commercial and Metered Flow
2
(300 GPD)
3
(450 GPD)
4
(600 GPD)
Each Add’l Bedroom (+150 GPD)
Per 100 GPD
2
400
560
750
188
125
4
425
617
825
210
140
6
450
675
900
233
155
8
500
750
1000
255
170
10
550
825
1100
278
185
12
600
900
1200
300
200
14
637
955
1275
319
213
16
675
1010
1350
338
225
18
712
1065
1425
357
237
20
750
1120
1500
375
250
22
775
1158
1550
387
258
24
800
1196
1600
400
266
26
825
1234
1650
412
274
28
850
1272
1700
425
282
30
875
1310
1750
437
290
32
900
1348
1800
449
298
34
925
1386
1850
462
306
36
950
1424
1900
475
314
38
975
1462
1950
488
322
40
1000
1500
2000
500
330
42
1050
1575
2100
525
347
44
1100
1650
2200
550
364
46
1150
1725
2300
575
381
48
1200
1800
2400
600
398
50
1250
1875
2500
625
415
52
1300
1950
2600
650
432
54
1350
2025
2700
675
449
56
1400
2100
2800
700
466
58
1450
2175
2900
725
483
60
1500
2250
3000
750
500
Source. (See Revision Notes #1 and #2 at chapter heading for Env-Wq 1000) #11184, eff 10-1-16; ss by #14486, eff 2-1-26, EXPIRES: 2-1-36 (formerly Env-Wq 1016.01)