Investigating Fracture Network Deformation Using Noble Gas Release

Table 3

Discrete noble gas sample data.

Sample	Date	Time	Ar (ppm)	+/-	He (ppm)	+/-	^40Ar/^36Ar	+/-
(1) BCD ATM STD 1	8/21/19	09:45	9141.1	186.32	5.36	0.77	289.8	2.69
(2) BCD Well BKG 1	8/21/19	13:45	9391.2	191.41	4.16	0.60	292.9	2.72
(3) BCD ATM STD 2	8/26/19	12:15	9448.8	192.59	3.29	0.47	288.2	2.68
(4) BCD Well BKG 2	8/26/19	15:50	9390.1	191.39	4.17	0.60	291.4	2.71
(5) BCD ATM STD 3	8/26/19	17:28	9352.4	190.62	4.36	0.63	288.9	2.68
(6) BCD Well BKG 3	8/27/19	12:18	9491.3	193.45	3.61	0.52	287.9	2.67
(7) BCD Well PS 1	8/28/19	14:00	9439.6	192.40	3.97	0.57	292.2	2.71
(8) BCD Well PS 2	8/28/19	14:57	9386.2	191.31	4.52	0.65	297.1	2.76
(9) BCD Well PS 3	8/28/19	15:45	9425.6	192.12	4.26	0.61	293.5	2.73
(10) BCD Well PS 4	8/28/19	16:20	9468.1	192.98	3.71	0.53	290.6	2.70
(11) BCD Well PS 5	8/28/19	17:00	9717.3	198.06	2.87	0.41	312.4	2.90
(12) BCD Well PS 6	8/29/19	07:23	9352.3	190.62	4.19	0.60	297.3	2.76
Average STD			9314.1	189.84	4.34	0.09	289.0	2.68
Average BKG			9424.2	192.09	3.98	0.08	290.7	2.70
Average PS			9464.9	192.92	3.92	0.08	297.2	2.76

STD = standard; ATM = atmosphere; BKG = background; PS = postshot.