Monitoring and remediation Question 1 For chemicals in hydraulic fracturing formulations or pre-treatments, provide the proportion of injected chemical mass RECOVERED in flowback and/or produced waters. Please also note the source of data estimated or from monitoring and also details of the method or – technique. Formulation or pre-treatment Chemical Abstract Proportion (%) of injected Method of determination Analytical or individual chemical Services (CAS) Number (if mass RECOVERED in (estimated or from method/monitoring appropriate) flowback and/or produced monitoring) technique waters e.g. hydrochloric acid e.g. 7647-01-0 e.g. 70% e.g. monitoring Question 2 For GEOGENIC CHEMICAL CONTAMINANTS (e.g. NATURALLY OCCURRING OR NEWLY FORMED trace metals, organics, salts, radionuclides, etc.) mobilised as a result of hydraulic fracturing, provide data from any monitoring or estimations of the presence of these chemicals in flowback and/or produced waters. Please also note the analytical method or monitoring technique. Geogenic chemical/chemical Chemical Abstract Maximum concentration in Method of determination Analytical group Services (CAS) Number (if flowback and/or produced (estimated or from method/monitoring appropriate) waters (ng/L) monitoring) technique e.g. lead e.g. 7439-92-1 e.g. 7 ng/L e.g. monitoring Question 3
Monitoring and remediation Question 1 For chemicals in hydraulic fracturing formulations or pre-treatments, provide the proportion of injected chemical mass RECOVERED in flowback and/or produced waters. Please also note the source of data – estimated or from monitoring and also details of the method or technique. Formulation or pre-treatment or individual chemical Chemical Abstract Services (CAS) Number (if appropriate) Proportion (%) of injected mass RECOVERED in flowback and/or produced waters Method of determination (estimated or from monitoring) Analytical method/monitoring technique e.g. hydrochloric acid e.g. 7647-01-0 e.g. 70% e.g. monitoring Question 2 For GEOGENIC CHEMICAL CONTAMINANTS (e.g. NATURALLY OCCURRING OR NEWLY FORMED trace metals, organics, salts, radionuclides, etc.) mobilised as a result of hydraulic fracturing, provide data from any monitoring or estimations of the presence of these chemicals in flowback and/or produced waters. Please also note the analytical method or monitoring technique. Geogenic chemical/chemical group Chemical Abstract Services (CAS) Number (if appropriate) Maximum concentration in flowback and/or produced waters (ng/L) Method of determination (estimated or from monitoring) Analytical method/monitoring technique e.g. lead e.g. 7439-92-1 e.g. 7 ng/L e.g. monitoring Question 3
technical-report-number-07-identification-chemicals-associated-csg.docx