Environmental Sample

COGIS - Environmental Sample Site Information

#452989 Information

Sample Site ID	452989
FacilityType	OG	Proj Number
County	WELD - 123	Location	NESE 19 8N59W
Elevation	4859	Lat/Long	40.644644/-104.012529
DWR Receipt #		WellDepth

Related Facility/Well
API Number:	05-123-45850	Well Name:	Castor Fed 8-59 19-24-4
Well Status:	PR	Operator Name:	BISON IV OPERATING LLC
Location:	NESE 19 8N 59W

CECMC Water Quality Database Disclaimer
The analytical data And other information In this database are a compilation Of data collected by CECMC staff, Data submitted To CECMC from a variety Of third parties, And historical data. All analytical data collected by Or submitted To the CECMC Is Public information And CECMC posts the data To this database As a Public service. The data Is provided For informational purposes only. CECMC does Not conduct a detailed review Of quality control/quality assurance protocols, chain Of custody procedures, Or field Or laboratory methodologies On data received from third parties. The level Of review performed On historical data Is unknown. CECMC does Not regularly perform formal data validation For any Of the data posted To this database. The CECMC makes no warranties Or representations Of any kind, express Or implied, regarding the quality, accuracy, reliability, merchantability, Or fitness For a particular purpose Of the data provided herein.

Sample(s)

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672975

672976

655715

Sample ID: 672975 Sample Date: 11/05/2025 Matrix: GAS Collection Point: BDH Type: BDH Lab: Dolan Integration Group

Sample Results for Sample # 672975 Dolan Integration Group ID: DIG-042211
Method Code	Param Description	Result Value	Units	Detection Limit	Qualifier
SOP	BRITISH THERMAL UNITS	54	BTU/cuft
SOP	BUTANE	0.025	MOL %	0.005
SOP	C6+ (hexanes +)	0.016	MOL %	0.005
SOP	CARBON DIOXIDE	0.007	MOL %	0.005
SOP	DELTA 13C C1	-54.3	per mil
SOP	DELTA 13C C2	-37.3	per mil
SOP	DELTA 13C C3	-32.5	per mil
SOP	DELTA 13C nC4	-30.5	per mil
SOP	Delta 13C nC5	-29.4	per mil
SOP	DELTA D C1	-326	per mil
SOP	ETHANE	0.042	MOL %	0.005
SOP	ETHENE	ND	MOL %	0.005	ND
SOP	Helium	ND	MOL %	0.005	ND
SOP	HYDROGEN	85.984	MOL %	0.005
SOP	ISOBUTANE	ND	MOL %	0.005	ND
SOP	ISOPENTANE	0.009	MOL %	0.005
SOP	METHANE	0.31	MOL %	0.005
SOP	NITROGEN (N2)	12.938	MOL %	0.005
SOP	OXYGEN + ARGON	0.615	MOL %	0.005
SOP	PENTANE	0.014	MOL %	0.005
SOP	PROPANE	0.035	MOL %	0.005
SOP	SPECIFIC GRAVITY	0.973	No Unit

Sample ID: 672976 Sample Date: 11/05/2025 Matrix: GAS Collection Point: PRDC Type: PRDG Lab: Dolan Integration Group

Sample Results for Sample # 672976 Dolan Integration Group ID: DIG-042210
Method Code	Param Description	Result Value	Units	Detection Limit	Qualifier
SOP	BRITISH THERMAL UNITS	1282	BTU/cuft
SOP	BUTANE	2.422	MOL %	0.005
SOP	C6+ (hexanes +)	0.069	MOL %	0.005
SOP	CARBON DIOXIDE	2.902	MOL %	0.005
SOP	DELTA 13C C1	-54.9	per mil
SOP	DELTA 13C C2	-38.4	per mil
SOP	DELTA 13C C3	-33	per mil
SOP	DELTA 13C CO2	-2.2	per mil
SOP	DELTA 13C iC4	-33.2	per mil
SOP	Delta 13C iC5	-28.8	per mil
SOP	DELTA 13C nC4	-30.4	per mil
SOP	Delta 13C nC5	-29.4	per mil
SOP	DELTA D C1	-288	per mil
SOP	ETHANE	12.606	MOL %	0.005
SOP	ETHENE	ND	MOL %	0.005	ND
SOP	Helium	ND	MOL %	0.005	ND
SOP	HYDROGEN	ND	MOL %	0.005	ND
SOP	ISOBUTANE	0.741	MOL %	0.005
SOP	ISOPENTANE	0.36	MOL %	0.005
SOP	METHANE	70.8	MOL %	0.005
SOP	NITROGEN (N2)	1.358	MOL %	0.005
SOP	OXYGEN + ARGON	0.128	MOL %	0.005
SOP	PENTANE	0.418	MOL %	0.005
SOP	PROPANE	8.196	MOL %	0.005
SOP	SPECIFIC GRAVITY	0.791	No Unit

Sample ID: 655715 Sample Date: 01/04/2024 Matrix: GAS Collection Point: PRODEQP Type: PRDG Lab: SPL

Sample Results for Sample # 655715 SPL ID: 24010086-006A
Method Code	Param Description	Result Value	Units	Detection Limit	Qualifier
SOP	BRITISH THERMAL UNITS	1354	BTU/cuft
SOP	BUTANE	2.7794	MOL %	0.001
SOP	CARBON DIOXIDE	2.6821	MOL %	0.001
SOP	ETHENE	11.9717	MOL %	0.001
SOP	HEXANES	0.8544	MOL %	0.001
SOP	HYDROGEN SULFIDE		MOL %
SOP	ISOBUTANE	0.8372	MOL %	0.001
SOP	ISOPENTANE	0.5622	MOL %	0.001
SOP	METHANE	70.4231	MOL %	0.001
SOP	NITROGEN (N2)	0.9041	MOL %	0.001
SOP	PENTANE	0.7433	MOL %	0.001
SOP	PROPANE	8.2425	MOL %	0.001
SOP	SPECIFIC GRAVITY	0.8254	RATIO_AIR

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COGIS - Environmental Sample Site Information

Sample ID: 672975 Sample Date: 11/05/2025 Matrix: GAS Collection Point: BDH Type: BDH Lab: Dolan Integration Group

Sample ID: 672976 Sample Date: 11/05/2025 Matrix: GAS Collection Point: PRDC Type: PRDG Lab: Dolan Integration Group

Sample ID: 655715 Sample Date: 01/04/2024 Matrix: GAS Collection Point: PRODEQP Type: PRDG Lab: SPL