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Code ch. 250 Appendix A, Table 1 - Medium-Specific Concentrations (MSCs) for Organic Regulated Substances in Groundwater (nonuse aquifer, R)","page":11,"quote":null}},{"id":"f54b15be0a9d80ee","parameter":"VINYL BROMIDE (BROMOETHENE)","value":"78","value_num":78,"unit":"µg/L","direction":"max","kind":"guideline","medium":"groundwater","level":"regional","parameter_key":"cas:593-60-2","place":["US-PA"],"conditions":["the Statewide health standard under Act 2 (Land Recycling and Environmental Remediation Standards Act): a person may instead attain the background or a site-specific standard","groundwater in an aquifer not used or currently planned to be used (§250.304(d))","nonresidential standard"],"cite":{"instrument":"us_pa_act2_gw","title":"25 Pa. 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