17 CAR § 11-1002 – Table 2 — Chlorine Compound Required to Produce a 50-mg / l Solution in 100 ft (305 m) of Water-Filled Casing*

Casing Diameter	Volume 100 ft. (30.5 m)	65% HTH,Perchloron, etc. (dry weight)	25% Chloride of Lime (dry weight)H	5.25% Purex, Chlorox, etc.(sodium hypochlorite)(liquid measure)
in mm	gal m3	oz g	oz g	oz l
2 51	16.3 0.06	0.2 5.7	0.5 14.2	2 0.06
4 102	65.3 0.25	0.7 19.8	2 56.7	9 0.3
6 152	147 0.56	2 56.7	4 113	20 0.6
8 203	261 .99	3 85.1	7 198	34 1.0
10 254	408 1.5	4 113	11 312	56 1.7
12 305	588 2.2	6 170	16 454	80 2.4
16 406	1,045 4.0	11 312	28 794	128 3.8
20 508	1,632 6.2	17 482	43 1,219	214 6.4
24 610	2,350 8.9	24 680	63 1,786	298 8.7

(a) Note.
1. (1) Liquid sodium hypochlorite in a 12-percent solution is often sold for use in water and wastewater treatment plants, and as a commercial bleach or for use in swimming pools.
2. (2) Utilizing a solution of this nature would call for a liquid (chemical) measure equal to one-half the volumes presented in column 5.
(b)
1. (1) *EPA recommends a minimum concentration of 100 mg/l available chlorine.
2. (2) To obtain this concentration, double the amounts indicated.
(c) Where a dry chemical is used, it should be mixed with water to form a chlorine solution before putting it into the well.