Table 1 Los Angeles Basin groundwater sample ID, well depth, perforation intervals, dissolved methane concentration, and model layer and chronostratigraphic unit

From: Methane emissions from groundwater pumping in the USA

Sample ID	Well depth (m below LSD)	Perforation intervals (m below LSD)	Dissolved methane⁷ (mg/L) LRL = 0.0001	Model layer and chronostratigraphic unit¹⁹
LA_01	91	85–91	0.057	4‐Pacific A
LA_02	332	296–302	28	8‐Upper Wilmington A
LA_03	133	126–133	66	7‐Bent Spring
LA_04	456	437–443	81	11‐Long Beach A
LA_05	338	332–338	60	10‐Lower Wilmington
LA_06	108	102–108	0.19	7‐Bent Spring
LA_07	299	274–293	67	13‐Long Beach C
LA_08	536	530–536	0.0015	6‐Harbor
LA_09	158	152–158	0.25	9‐Upper Wilmington B
LA_10	376	364–376	73	11‐Long Beach A
LA_11	180	174–180	0.12	8‐Upper Wilmington A
LA_12	168	162–168	21	7‐Bent Spring
LA_13	424	405–424	110	13‐Long Beach C
LA_14	419	389–407	86	11‐Long Beach A
LA_15	192	186–192	0.29	8‐Upper Wilmington A
LA_16	201	195–201	0.024	7‐Bent Spring
LA_17	110	104–110	17	6‐Harbor
LA_18	607	594–607	93	13‐Long Beach C
LA_19	466	454–460	150	11‐Long Beach A
LA_20	408	378–384	1.9	11‐Long Beach A
LA_21	152	146–152	6.2	8‐Upper Wilmington A
LA_22	219	213–219	4.8	9‐Upper Wilmington B
LA_23	128	122–128	39	6‐Harbor
LA_24	549	488–494	56	11‐Long Beach A
LA_25	335	329–335	8.8	9‐Upper Wilmington B
LA_26	591	579–591	37	13‐Long Beach C
LA_27	389	383–389	50	12‐Long Beach B
LA_28	171	165–171	58	8‐Upper Wilmington A
LA_29	137	131–137	0.084	9‐Upper Wilmington B
LA_30	427	421–427	30	13‐Long Beach C
LA_31	427	360–366	94	11‐Long Beach A
LA_32	149	143–149	20	8‐Upper Wilmington A
LA_33	421	366–372	48	12‐Long Beach B
LA_34	250	244–250	49	10‐Lower Wilmington
LA_35	125	119–125	71	9‐Upper Wilmington B
LA_36	314	290–296	74	12‐Long Beach B
LA_37	236	230–236	130	11‐Long Beach A

LSD land‐surface datum, LRL lowest reporting level

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