{"query":{"parameter":"tetrahydrofuran","place":"US-PA","medium":null,"statistic":null,"kind":null},"searched":{"places":["US-PA","US"],"parameter_keys":["cas:109-99-9","cas:89686-69-1"],"names_matched":[["tetrahydrofuran","cas:109-99-9"],["furan 2 2 1 methylethylidene bis tetrahydro","cas:89686-69-1","furan tetrahydro"]],"match":"exact+contains","order":"The place's own instruments first, then each place above it, each in its register's order"},"total":31,"offset":0,"returned":31,"next_offset":null,"rows":[{"id":"8f9444ed46b61fbd","parameter":"TETRAHYDROFURAN","value":"25","value_num":25,"unit":"µg/L","direction":"max","kind":"guideline","medium":"groundwater","level":"regional","parameter_key":"cas:109-99-9","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 used or currently planned to be used for drinking water or agriculture, total dissolved solids 2,500 mg/L or less (25 Pa. Code §250.304(c))","residential standard"],"cite":{"instrument":"us_pa_act2_gw","title":"25 Pa. Code ch. 250 (Act 2) — Statewide health standard MSCs for groundwater, Appendix A Tables 1-2, as DEP publishes them, with the 2024 PFAS MSCs","issuer":"Commonwealth of Pennsylvania, Environmental Quality Board (Department of Environmental Protection, Land Recycling Program)","edition":"the Appendix A tables in force from November 20, 2021 (51 Pa.B. 7173) as DEP publishes them: Table 1 November 2021, Table 2 November 2023; the PFAS MSCs effective June 25, 2024 (DEP, updated 7/10/2024); DEP's bromobenzene correction as its Statewide Health Standards page states it on 2026-10-15","source_url":"https://files.dep.state.pa.us/EnvironmentalCleanupBrownfields/LandRecyclingProgram/LandRecyclingProgramPortalFiles/GuidanceTechTools/VaporIntrusion/November_2021/Table%201.pdf","source_sha256":"5bc985b6f8b3595b0684a060dbc14d170987bbc89a70737370e1887c3932b13c","fetched_at":"2026-10-15","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"25 Pa. Code ch. 250 Appendix A, Table 1 - Medium-Specific Concentrations (MSCs) for Organic Regulated Substances in Groundwater (used aquifer, TDS ≤ 2500, R)","page":10,"quote":null}},{"id":"09ac0cf841f241ed","parameter":"TETRAHYDROFURAN","value":"130","value_num":130,"unit":"µg/L","direction":"max","kind":"guideline","medium":"groundwater","level":"regional","parameter_key":"cas:109-99-9","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 used or currently planned to be used for drinking water or agriculture, total dissolved solids 2,500 mg/L or less (25 Pa. Code §250.304(c))","nonresidential standard"],"cite":{"instrument":"us_pa_act2_gw","title":"25 Pa. Code ch. 250 (Act 2) — Statewide health standard MSCs for groundwater, Appendix A Tables 1-2, as DEP publishes them, with the 2024 PFAS MSCs","issuer":"Commonwealth of Pennsylvania, Environmental Quality Board (Department of Environmental Protection, Land Recycling Program)","edition":"the Appendix A tables in force from November 20, 2021 (51 Pa.B. 7173) as DEP publishes them: Table 1 November 2021, Table 2 November 2023; the PFAS MSCs effective June 25, 2024 (DEP, updated 7/10/2024); DEP's bromobenzene correction as its Statewide Health Standards page states it on 2026-10-15","source_url":"https://files.dep.state.pa.us/EnvironmentalCleanupBrownfields/LandRecyclingProgram/LandRecyclingProgramPortalFiles/GuidanceTechTools/VaporIntrusion/November_2021/Table%201.pdf","source_sha256":"5bc985b6f8b3595b0684a060dbc14d170987bbc89a70737370e1887c3932b13c","fetched_at":"2026-10-15","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"25 Pa. Code ch. 250 Appendix A, Table 1 - Medium-Specific Concentrations (MSCs) for Organic Regulated Substances in Groundwater (used aquifer, TDS ≤ 2500, NR)","page":10,"quote":null}},{"id":"3b40b2fe5936cf4d","parameter":"TETRAHYDROFURAN","value":"2500","value_num":2500,"unit":"µg/L","direction":"max","kind":"guideline","medium":"groundwater","level":"regional","parameter_key":"cas:109-99-9","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 used or currently planned to be used whose naturally occurring background total dissolved solids exceed 2,500 mg/L (§250.304(e))","residential standard"],"cite":{"instrument":"us_pa_act2_gw","title":"25 Pa. Code ch. 250 (Act 2) — Statewide health standard MSCs for groundwater, Appendix A Tables 1-2, as DEP publishes them, with the 2024 PFAS MSCs","issuer":"Commonwealth of Pennsylvania, Environmental Quality Board (Department of Environmental Protection, Land Recycling Program)","edition":"the Appendix A tables in force from November 20, 2021 (51 Pa.B. 7173) as DEP publishes them: Table 1 November 2021, Table 2 November 2023; the PFAS MSCs effective June 25, 2024 (DEP, updated 7/10/2024); DEP's bromobenzene correction as its Statewide Health Standards page states it on 2026-10-15","source_url":"https://files.dep.state.pa.us/EnvironmentalCleanupBrownfields/LandRecyclingProgram/LandRecyclingProgramPortalFiles/GuidanceTechTools/VaporIntrusion/November_2021/Table%201.pdf","source_sha256":"5bc985b6f8b3595b0684a060dbc14d170987bbc89a70737370e1887c3932b13c","fetched_at":"2026-10-15","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"25 Pa. Code ch. 250 Appendix A, Table 1 - Medium-Specific Concentrations (MSCs) for Organic Regulated Substances in Groundwater (used aquifer, TDS > 2500, R)","page":10,"quote":null}},{"id":"4b0177cbca7ad793","parameter":"TETRAHYDROFURAN","value":"13000","value_num":13000,"unit":"µg/L","direction":"max","kind":"guideline","medium":"groundwater","level":"regional","parameter_key":"cas:109-99-9","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 used or currently planned to be used whose naturally occurring background total dissolved solids exceed 2,500 mg/L (§250.304(e))","nonresidential standard"],"cite":{"instrument":"us_pa_act2_gw","title":"25 Pa. Code ch. 250 (Act 2) — Statewide health standard MSCs for groundwater, Appendix A Tables 1-2, as DEP publishes them, with the 2024 PFAS MSCs","issuer":"Commonwealth of Pennsylvania, Environmental Quality Board (Department of Environmental Protection, Land Recycling Program)","edition":"the Appendix A tables in force from November 20, 2021 (51 Pa.B. 7173) as DEP publishes them: Table 1 November 2021, Table 2 November 2023; the PFAS MSCs effective June 25, 2024 (DEP, updated 7/10/2024); DEP's bromobenzene correction as its Statewide Health Standards page states it on 2026-10-15","source_url":"https://files.dep.state.pa.us/EnvironmentalCleanupBrownfields/LandRecyclingProgram/LandRecyclingProgramPortalFiles/GuidanceTechTools/VaporIntrusion/November_2021/Table%201.pdf","source_sha256":"5bc985b6f8b3595b0684a060dbc14d170987bbc89a70737370e1887c3932b13c","fetched_at":"2026-10-15","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"25 Pa. Code ch. 250 Appendix A, Table 1 - Medium-Specific Concentrations (MSCs) for Organic Regulated Substances in Groundwater (used aquifer, TDS > 2500, NR)","page":10,"quote":null}},{"id":"19cf1ace19af5e80","parameter":"TETRAHYDROFURAN","value":"25","value_num":25,"unit":"µg/L","direction":"max","kind":"guideline","medium":"groundwater","level":"regional","parameter_key":"cas:109-99-9","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))","residential standard"],"cite":{"instrument":"us_pa_act2_gw","title":"25 Pa. Code ch. 250 (Act 2) — Statewide health standard MSCs for groundwater, Appendix A Tables 1-2, as DEP publishes them, with the 2024 PFAS MSCs","issuer":"Commonwealth of Pennsylvania, Environmental Quality Board (Department of Environmental Protection, Land Recycling Program)","edition":"the Appendix A tables in force from November 20, 2021 (51 Pa.B. 7173) as DEP publishes them: Table 1 November 2021, Table 2 November 2023; the PFAS MSCs effective June 25, 2024 (DEP, updated 7/10/2024); DEP's bromobenzene correction as its Statewide Health Standards page states it on 2026-10-15","source_url":"https://files.dep.state.pa.us/EnvironmentalCleanupBrownfields/LandRecyclingProgram/LandRecyclingProgramPortalFiles/GuidanceTechTools/VaporIntrusion/November_2021/Table%201.pdf","source_sha256":"5bc985b6f8b3595b0684a060dbc14d170987bbc89a70737370e1887c3932b13c","fetched_at":"2026-10-15","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"25 Pa. Code ch. 250 Appendix A, Table 1 - Medium-Specific Concentrations (MSCs) for Organic Regulated Substances in Groundwater (nonuse aquifer, R)","page":10,"quote":null}},{"id":"0017556cde1d259a","parameter":"TETRAHYDROFURAN","value":"130","value_num":130,"unit":"µg/L","direction":"max","kind":"guideline","medium":"groundwater","level":"regional","parameter_key":"cas:109-99-9","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. Code ch. 250 (Act 2) — Statewide health standard MSCs for groundwater, Appendix A Tables 1-2, as DEP publishes them, with the 2024 PFAS MSCs","issuer":"Commonwealth of Pennsylvania, Environmental Quality Board (Department of Environmental Protection, Land Recycling Program)","edition":"the Appendix A tables in force from November 20, 2021 (51 Pa.B. 7173) as DEP publishes them: Table 1 November 2021, Table 2 November 2023; the PFAS MSCs effective June 25, 2024 (DEP, updated 7/10/2024); DEP's bromobenzene correction as its Statewide Health Standards page states it on 2026-10-15","source_url":"https://files.dep.state.pa.us/EnvironmentalCleanupBrownfields/LandRecyclingProgram/LandRecyclingProgramPortalFiles/GuidanceTechTools/VaporIntrusion/November_2021/Table%201.pdf","source_sha256":"5bc985b6f8b3595b0684a060dbc14d170987bbc89a70737370e1887c3932b13c","fetched_at":"2026-10-15","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"25 Pa. Code ch. 250 Appendix A, Table 1 - Medium-Specific Concentrations (MSCs) for Organic Regulated Substances in Groundwater (nonuse aquifer, NR)","page":10,"quote":null}},{"id":"bfb7491084b84400","parameter":"TETRAHYDROFURAN","value":"230","value_num":230,"unit":"mg/kg","direction":"max","kind":"guideline","medium":"soil","level":"regional","parameter_key":"cas:109-99-9","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","a direct contact numeric value: the soil MSC is the lowest of it and the soil-to-groundwater numeric value, or it with a soil buffer or equivalency demonstration (§250.305(c)-(e))","residential, soil 0-15 feet from the existing ground surface (§250.305(c))"],"cite":{"instrument":"us_pa_act2_soil","title":"25 Pa. Code ch. 250 (Act 2) — Statewide health standard MSCs for soil, Appendix A Tables 3-4 (direct contact and soil to groundwater), as DEP publishes them","issuer":"Commonwealth of Pennsylvania, Environmental Quality Board (Department of Environmental Protection, Land Recycling Program)","edition":"the Appendix A tables in force from November 20, 2021 (51 Pa.B. 7173) as DEP publishes them: Table 3A November 2021, Table 3B January 2022, Tables 4A and 4B November 2023","source_url":"https://files.dep.state.pa.us/EnvironmentalCleanupBrownfields/LandRecyclingProgram/LandRecyclingProgramPortalFiles/GuidanceTechTools/VaporIntrusion/November_2021/Table%203a.pdf","source_sha256":"546e6e1ac858eb7cccc6d8f5a029fa8a9a4f7976e589cf983ef8f359b491dfb7","fetched_at":"2026-10-15","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"25 Pa. Code ch. 250 Appendix A, Table 3 - MSCs for Organic Regulated Substances in Soil, A. Direct Contact Numeric Values (R)","page":6,"quote":null}},{"id":"ddd6c3a2062450f9","parameter":"TETRAHYDROFURAN","value":"1100","value_num":1100,"unit":"mg/kg","direction":"max","kind":"guideline","medium":"soil","level":"regional","parameter_key":"cas:109-99-9","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","a direct contact numeric value: the soil MSC is the lowest of it and the soil-to-groundwater numeric value, or it with a soil buffer or equivalency demonstration (§250.305(c)-(e))","nonresidential, surface soil 0-2 feet (§250.305(d))"],"cite":{"instrument":"us_pa_act2_soil","title":"25 Pa. Code ch. 250 (Act 2) — Statewide health standard MSCs for soil, Appendix A Tables 3-4 (direct contact and soil to groundwater), as DEP publishes them","issuer":"Commonwealth of Pennsylvania, Environmental Quality Board (Department of Environmental Protection, Land Recycling Program)","edition":"the Appendix A tables in force from November 20, 2021 (51 Pa.B. 7173) as DEP publishes them: Table 3A November 2021, Table 3B January 2022, Tables 4A and 4B November 2023","source_url":"https://files.dep.state.pa.us/EnvironmentalCleanupBrownfields/LandRecyclingProgram/LandRecyclingProgramPortalFiles/GuidanceTechTools/VaporIntrusion/November_2021/Table%203a.pdf","source_sha256":"546e6e1ac858eb7cccc6d8f5a029fa8a9a4f7976e589cf983ef8f359b491dfb7","fetched_at":"2026-10-15","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"25 Pa. Code ch. 250 Appendix A, Table 3 - MSCs for Organic Regulated Substances in Soil, A. Direct Contact Numeric Values (NR 0-2 ft)","page":6,"quote":null}},{"id":"c632081737f4ead3","parameter":"TETRAHYDROFURAN","value":"1300","value_num":1300,"unit":"mg/kg","direction":"max","kind":"guideline","medium":"soil","level":"regional","parameter_key":"cas:109-99-9","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","a direct contact numeric value: the soil MSC is the lowest of it and the soil-to-groundwater numeric value, or it with a soil buffer or equivalency demonstration (§250.305(c)-(e))","nonresidential, subsurface soil 2-15 feet (§250.305(e))"],"cite":{"instrument":"us_pa_act2_soil","title":"25 Pa. Code ch. 250 (Act 2) — Statewide health standard MSCs for soil, Appendix A Tables 3-4 (direct contact and soil to groundwater), as DEP publishes them","issuer":"Commonwealth of Pennsylvania, Environmental Quality Board (Department of Environmental Protection, Land Recycling Program)","edition":"the Appendix A tables in force from November 20, 2021 (51 Pa.B. 7173) as DEP publishes them: Table 3A November 2021, Table 3B January 2022, Tables 4A and 4B November 2023","source_url":"https://files.dep.state.pa.us/EnvironmentalCleanupBrownfields/LandRecyclingProgram/LandRecyclingProgramPortalFiles/GuidanceTechTools/VaporIntrusion/November_2021/Table%203a.pdf","source_sha256":"546e6e1ac858eb7cccc6d8f5a029fa8a9a4f7976e589cf983ef8f359b491dfb7","fetched_at":"2026-10-15","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"25 Pa. Code ch. 250 Appendix A, Table 3 - MSCs for Organic Regulated Substances in Soil, A. Direct Contact Numeric Values (NR 2-15 ft)","page":6,"quote":null}},{"id":"ffacadefa136a390","parameter":"TETRAHYDROFURAN","value":"2.5","value_num":2.5,"unit":"mg/kg","direction":"max","kind":"guideline","medium":"soil","level":"regional","parameter_key":"cas:109-99-9","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","a soil-to-groundwater numeric value (§250.308(a)): a person may instead show the soil's SPLP leachate does not exceed the groundwater MSC, or use the soil buffer distance (§250.308(b)) or an equivalency demonstration (§250.308(d)); soil below 15 feet takes only this pathway (§250.305(f))","the option 100 times the applicable groundwater MSC, expressed as mg/kg (§250.308(a)(1))","groundwater in an aquifer used or currently planned to be used for drinking water or agriculture, total dissolved solids 2,500 mg/L or less (25 Pa. Code §250.304(c))","residential standard"],"cite":{"instrument":"us_pa_act2_soil","title":"25 Pa. Code ch. 250 (Act 2) — Statewide health standard MSCs for soil, Appendix A Tables 3-4 (direct contact and soil to groundwater), as DEP publishes them","issuer":"Commonwealth of Pennsylvania, Environmental Quality Board (Department of Environmental Protection, Land Recycling Program)","edition":"the Appendix A tables in force from November 20, 2021 (51 Pa.B. 7173) as DEP publishes them: Table 3A November 2021, Table 3B January 2022, Tables 4A and 4B November 2023","source_url":"https://files.dep.state.pa.us/EnvironmentalCleanupBrownfields/LandRecyclingProgram/LandRecyclingProgramPortalFiles/GuidanceTechTools/VaporIntrusion/November_2021/Table%203a.pdf","source_sha256":"546e6e1ac858eb7cccc6d8f5a029fa8a9a4f7976e589cf983ef8f359b491dfb7","fetched_at":"2026-10-15","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"25 Pa. Code ch. 250 Appendix A, Table 3 - MSCs for Organic Regulated Substances in Soil, B. Soil to Groundwater Numeric Values (used aquifer, TDS ≤ 2500, R, 100 X GW MSC)","page":8,"quote":null}},{"id":"58fc321ddf3e7a81","parameter":"TETRAHYDROFURAN","value":"0.55E","value_num":0.55,"unit":"mg/kg","direction":"max","kind":"guideline","medium":"soil","level":"regional","parameter_key":"cas:109-99-9","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","a soil-to-groundwater numeric value (§250.308(a)): a person may instead show the soil's SPLP leachate does not exceed the groundwater MSC, or use the soil buffer distance (§250.308(b)) or an equivalency demonstration (§250.308(d)); soil below 15 feet takes only this pathway (§250.305(f))","the generic value of the soil-to-groundwater equation, for soil not in the zone of groundwater saturation; in that zone the value is one tenth of it (§250.308(a)(2)-(4))","groundwater in an aquifer used or currently planned to be used for drinking water or agriculture, total dissolved solids 2,500 mg/L or less (25 Pa. Code §250.304(c))","residential standard"],"cite":{"instrument":"us_pa_act2_soil","title":"25 Pa. Code ch. 250 (Act 2) — Statewide health standard MSCs for soil, Appendix A Tables 3-4 (direct contact and soil to groundwater), as DEP publishes them","issuer":"Commonwealth of Pennsylvania, Environmental Quality Board (Department of Environmental Protection, Land Recycling Program)","edition":"the Appendix A tables in force from November 20, 2021 (51 Pa.B. 7173) as DEP publishes them: Table 3A November 2021, Table 3B January 2022, Tables 4A and 4B November 2023","source_url":"https://files.dep.state.pa.us/EnvironmentalCleanupBrownfields/LandRecyclingProgram/LandRecyclingProgramPortalFiles/GuidanceTechTools/VaporIntrusion/November_2021/Table%203a.pdf","source_sha256":"546e6e1ac858eb7cccc6d8f5a029fa8a9a4f7976e589cf983ef8f359b491dfb7","fetched_at":"2026-10-15","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"25 Pa. Code ch. 250 Appendix A, Table 3 - MSCs for Organic Regulated Substances in Soil, B. Soil to Groundwater Numeric Values (used aquifer, TDS ≤ 2500, R, Generic Value)","page":8,"quote":null}},{"id":"fd4f0a27f9c33299","parameter":"TETRAHYDROFURAN","value":"13","value_num":13,"unit":"mg/kg","direction":"max","kind":"guideline","medium":"soil","level":"regional","parameter_key":"cas:109-99-9","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","a soil-to-groundwater numeric value (§250.308(a)): a person may instead show the soil's SPLP leachate does not exceed the groundwater MSC, or use the soil buffer distance (§250.308(b)) or an equivalency demonstration (§250.308(d)); soil below 15 feet takes only this pathway (§250.305(f))","the option 100 times the applicable groundwater MSC, expressed as mg/kg (§250.308(a)(1))","groundwater in an aquifer used or currently planned to be used for drinking water or agriculture, total dissolved solids 2,500 mg/L or less (25 Pa. Code §250.304(c))","nonresidential standard"],"cite":{"instrument":"us_pa_act2_soil","title":"25 Pa. Code ch. 250 (Act 2) — Statewide health standard MSCs for soil, Appendix A Tables 3-4 (direct contact and soil to groundwater), as DEP publishes them","issuer":"Commonwealth of Pennsylvania, Environmental Quality Board (Department of Environmental Protection, Land Recycling Program)","edition":"the Appendix A tables in force from November 20, 2021 (51 Pa.B. 7173) as DEP publishes them: Table 3A November 2021, Table 3B January 2022, Tables 4A and 4B November 2023","source_url":"https://files.dep.state.pa.us/EnvironmentalCleanupBrownfields/LandRecyclingProgram/LandRecyclingProgramPortalFiles/GuidanceTechTools/VaporIntrusion/November_2021/Table%203a.pdf","source_sha256":"546e6e1ac858eb7cccc6d8f5a029fa8a9a4f7976e589cf983ef8f359b491dfb7","fetched_at":"2026-10-15","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"25 Pa. Code ch. 250 Appendix A, Table 3 - MSCs for Organic Regulated Substances in Soil, B. Soil to Groundwater Numeric Values (used aquifer, TDS ≤ 2500, NR, 100 X GW MSC)","page":8,"quote":null}},{"id":"db91a04e7bacccee","parameter":"TETRAHYDROFURAN","value":"2.8E","value_num":2.8,"unit":"mg/kg","direction":"max","kind":"guideline","medium":"soil","level":"regional","parameter_key":"cas:109-99-9","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","a soil-to-groundwater numeric value (§250.308(a)): a person may instead show the soil's SPLP leachate does not exceed the groundwater MSC, or use the soil buffer distance (§250.308(b)) or an equivalency demonstration (§250.308(d)); soil below 15 feet takes only this pathway (§250.305(f))","the generic value of the soil-to-groundwater equation, for soil not in the zone of groundwater saturation; in that zone the value is one tenth of it (§250.308(a)(2)-(4))","groundwater in an aquifer used or currently planned to be used for drinking water or agriculture, total dissolved solids 2,500 mg/L or less (25 Pa. Code §250.304(c))","nonresidential standard"],"cite":{"instrument":"us_pa_act2_soil","title":"25 Pa. Code ch. 250 (Act 2) — Statewide health standard MSCs for soil, Appendix A Tables 3-4 (direct contact and soil to groundwater), as DEP publishes them","issuer":"Commonwealth of Pennsylvania, Environmental Quality Board (Department of Environmental Protection, Land Recycling Program)","edition":"the Appendix A tables in force from November 20, 2021 (51 Pa.B. 7173) as DEP publishes them: Table 3A November 2021, Table 3B January 2022, Tables 4A and 4B November 2023","source_url":"https://files.dep.state.pa.us/EnvironmentalCleanupBrownfields/LandRecyclingProgram/LandRecyclingProgramPortalFiles/GuidanceTechTools/VaporIntrusion/November_2021/Table%203a.pdf","source_sha256":"546e6e1ac858eb7cccc6d8f5a029fa8a9a4f7976e589cf983ef8f359b491dfb7","fetched_at":"2026-10-15","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"25 Pa. Code ch. 250 Appendix A, Table 3 - MSCs for Organic Regulated Substances in Soil, B. Soil to Groundwater Numeric Values (used aquifer, TDS ≤ 2500, NR, Generic Value)","page":8,"quote":null}},{"id":"9e43851b3ec9a782","parameter":"TETRAHYDROFURAN","value":"250","value_num":250,"unit":"mg/kg","direction":"max","kind":"guideline","medium":"soil","level":"regional","parameter_key":"cas:109-99-9","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","a soil-to-groundwater numeric value (§250.308(a)): a person may instead show the soil's SPLP leachate does not exceed the groundwater MSC, or use the soil buffer distance (§250.308(b)) or an equivalency demonstration (§250.308(d)); soil below 15 feet takes only this pathway (§250.305(f))","the option 100 times the applicable groundwater MSC, expressed as mg/kg (§250.308(a)(1))","groundwater in an aquifer used or currently planned to be used whose naturally occurring background total dissolved solids exceed 2,500 mg/L (§250.304(e))","residential standard"],"cite":{"instrument":"us_pa_act2_soil","title":"25 Pa. Code ch. 250 (Act 2) — Statewide health standard MSCs for soil, Appendix A Tables 3-4 (direct contact and soil to groundwater), as DEP publishes them","issuer":"Commonwealth of Pennsylvania, Environmental Quality Board (Department of Environmental Protection, Land Recycling Program)","edition":"the Appendix A tables in force from November 20, 2021 (51 Pa.B. 7173) as DEP publishes them: Table 3A November 2021, Table 3B January 2022, Tables 4A and 4B November 2023","source_url":"https://files.dep.state.pa.us/EnvironmentalCleanupBrownfields/LandRecyclingProgram/LandRecyclingProgramPortalFiles/GuidanceTechTools/VaporIntrusion/November_2021/Table%203a.pdf","source_sha256":"546e6e1ac858eb7cccc6d8f5a029fa8a9a4f7976e589cf983ef8f359b491dfb7","fetched_at":"2026-10-15","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"25 Pa. Code ch. 250 Appendix A, Table 3 - MSCs for Organic Regulated Substances in Soil, B. Soil to Groundwater Numeric Values (used aquifer, TDS > 2500, R, 100 X GW MSC)","page":8,"quote":null}},{"id":"64213c11957602b1","parameter":"TETRAHYDROFURAN","value":"55E","value_num":55,"unit":"mg/kg","direction":"max","kind":"guideline","medium":"soil","level":"regional","parameter_key":"cas:109-99-9","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","a soil-to-groundwater numeric value (§250.308(a)): a person may instead show the soil's SPLP leachate does not exceed the groundwater MSC, or use the soil buffer distance (§250.308(b)) or an equivalency demonstration (§250.308(d)); soil below 15 feet takes only this pathway (§250.305(f))","the generic value of the soil-to-groundwater equation, for soil not in the zone of groundwater saturation; in that zone the value is one tenth of it (§250.308(a)(2)-(4))","groundwater in an aquifer used or currently planned to be used whose naturally occurring background total dissolved solids exceed 2,500 mg/L (§250.304(e))","residential standard"],"cite":{"instrument":"us_pa_act2_soil","title":"25 Pa. Code ch. 250 (Act 2) — Statewide health standard MSCs for soil, Appendix A Tables 3-4 (direct contact and soil to groundwater), as DEP publishes them","issuer":"Commonwealth of Pennsylvania, Environmental Quality Board (Department of Environmental Protection, Land Recycling Program)","edition":"the Appendix A tables in force from November 20, 2021 (51 Pa.B. 7173) as DEP publishes them: Table 3A November 2021, Table 3B January 2022, Tables 4A and 4B November 2023","source_url":"https://files.dep.state.pa.us/EnvironmentalCleanupBrownfields/LandRecyclingProgram/LandRecyclingProgramPortalFiles/GuidanceTechTools/VaporIntrusion/November_2021/Table%203a.pdf","source_sha256":"546e6e1ac858eb7cccc6d8f5a029fa8a9a4f7976e589cf983ef8f359b491dfb7","fetched_at":"2026-10-15","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"25 Pa. Code ch. 250 Appendix A, Table 3 - MSCs for Organic Regulated Substances in Soil, B. Soil to Groundwater Numeric Values (used aquifer, TDS > 2500, R, Generic Value)","page":8,"quote":null}},{"id":"1de532acd9513300","parameter":"TETRAHYDROFURAN","value":"1300","value_num":1300,"unit":"mg/kg","direction":"max","kind":"guideline","medium":"soil","level":"regional","parameter_key":"cas:109-99-9","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","a soil-to-groundwater numeric value (§250.308(a)): a person may instead show the soil's SPLP leachate does not exceed the groundwater MSC, or use the soil buffer distance (§250.308(b)) or an equivalency demonstration (§250.308(d)); soil below 15 feet takes only this pathway (§250.305(f))","the option 100 times the applicable groundwater MSC, expressed as mg/kg (§250.308(a)(1))","groundwater in an aquifer used or currently planned to be used whose naturally occurring background total dissolved solids exceed 2,500 mg/L (§250.304(e))","nonresidential standard"],"cite":{"instrument":"us_pa_act2_soil","title":"25 Pa. Code ch. 250 (Act 2) — Statewide health standard MSCs for soil, Appendix A Tables 3-4 (direct contact and soil to groundwater), as DEP publishes them","issuer":"Commonwealth of Pennsylvania, Environmental Quality Board (Department of Environmental Protection, Land Recycling Program)","edition":"the Appendix A tables in force from November 20, 2021 (51 Pa.B. 7173) as DEP publishes them: Table 3A November 2021, Table 3B January 2022, Tables 4A and 4B November 2023","source_url":"https://files.dep.state.pa.us/EnvironmentalCleanupBrownfields/LandRecyclingProgram/LandRecyclingProgramPortalFiles/GuidanceTechTools/VaporIntrusion/November_2021/Table%203a.pdf","source_sha256":"546e6e1ac858eb7cccc6d8f5a029fa8a9a4f7976e589cf983ef8f359b491dfb7","fetched_at":"2026-10-15","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"25 Pa. Code ch. 250 Appendix A, Table 3 - MSCs for Organic Regulated Substances in Soil, B. Soil to Groundwater Numeric Values (used aquifer, TDS > 2500, NR, 100 X GW MSC)","page":8,"quote":null}},{"id":"4d298bb8ef228257","parameter":"TETRAHYDROFURAN","value":"280E","value_num":280,"unit":"mg/kg","direction":"max","kind":"guideline","medium":"soil","level":"regional","parameter_key":"cas:109-99-9","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","a soil-to-groundwater numeric value (§250.308(a)): a person may instead show the soil's SPLP leachate does not exceed the groundwater MSC, or use the soil buffer distance (§250.308(b)) or an equivalency demonstration (§250.308(d)); soil below 15 feet takes only this pathway (§250.305(f))","the generic value of the soil-to-groundwater equation, for soil not in the zone of groundwater saturation; in that zone the value is one tenth of it (§250.308(a)(2)-(4))","groundwater in an aquifer used or currently planned to be used whose naturally occurring background total dissolved solids exceed 2,500 mg/L (§250.304(e))","nonresidential standard"],"cite":{"instrument":"us_pa_act2_soil","title":"25 Pa. Code ch. 250 (Act 2) — Statewide health standard MSCs for soil, Appendix A Tables 3-4 (direct contact and soil to groundwater), as DEP publishes them","issuer":"Commonwealth of Pennsylvania, Environmental Quality Board (Department of Environmental Protection, Land Recycling Program)","edition":"the Appendix A tables in force from November 20, 2021 (51 Pa.B. 7173) as DEP publishes them: Table 3A November 2021, Table 3B January 2022, Tables 4A and 4B November 2023","source_url":"https://files.dep.state.pa.us/EnvironmentalCleanupBrownfields/LandRecyclingProgram/LandRecyclingProgramPortalFiles/GuidanceTechTools/VaporIntrusion/November_2021/Table%203a.pdf","source_sha256":"546e6e1ac858eb7cccc6d8f5a029fa8a9a4f7976e589cf983ef8f359b491dfb7","fetched_at":"2026-10-15","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"25 Pa. Code ch. 250 Appendix A, Table 3 - MSCs for Organic Regulated Substances in Soil, B. Soil to Groundwater Numeric Values (used aquifer, TDS > 2500, NR, Generic Value)","page":8,"quote":null}},{"id":"8cce2cf6cc2de33c","parameter":"TETRAHYDROFURAN","value":"2.5","value_num":2.5,"unit":"mg/kg","direction":"max","kind":"guideline","medium":"soil","level":"regional","parameter_key":"cas:109-99-9","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","a soil-to-groundwater numeric value (§250.308(a)): a person may instead show the soil's SPLP leachate does not exceed the groundwater MSC, or use the soil buffer distance (§250.308(b)) or an equivalency demonstration (§250.308(d)); soil below 15 feet takes only this pathway (§250.305(f))","the option 100 times the applicable groundwater MSC, expressed as mg/kg (§250.308(a)(1))","groundwater in an aquifer not used or currently planned to be used (§250.304(d))","residential standard"],"cite":{"instrument":"us_pa_act2_soil","title":"25 Pa. Code ch. 250 (Act 2) — Statewide health standard MSCs for soil, Appendix A Tables 3-4 (direct contact and soil to groundwater), as DEP publishes them","issuer":"Commonwealth of Pennsylvania, Environmental Quality Board (Department of Environmental Protection, Land Recycling Program)","edition":"the Appendix A tables in force from November 20, 2021 (51 Pa.B. 7173) as DEP publishes them: Table 3A November 2021, Table 3B January 2022, Tables 4A and 4B November 2023","source_url":"https://files.dep.state.pa.us/EnvironmentalCleanupBrownfields/LandRecyclingProgram/LandRecyclingProgramPortalFiles/GuidanceTechTools/VaporIntrusion/November_2021/Table%203a.pdf","source_sha256":"546e6e1ac858eb7cccc6d8f5a029fa8a9a4f7976e589cf983ef8f359b491dfb7","fetched_at":"2026-10-15","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"25 Pa. Code ch. 250 Appendix A, Table 3 - MSCs for Organic Regulated Substances in Soil, B. Soil to Groundwater Numeric Values (nonuse aquifer, R, 100 X GW MSC)","page":8,"quote":null}},{"id":"2f939acf79fc061b","parameter":"TETRAHYDROFURAN","value":"0.55E","value_num":0.55,"unit":"mg/kg","direction":"max","kind":"guideline","medium":"soil","level":"regional","parameter_key":"cas:109-99-9","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","a soil-to-groundwater numeric value (§250.308(a)): a person may instead show the soil's SPLP leachate does not exceed the groundwater MSC, or use the soil buffer distance (§250.308(b)) or an equivalency demonstration (§250.308(d)); soil below 15 feet takes only this pathway (§250.305(f))","the generic value of the soil-to-groundwater equation, for soil not in the zone of groundwater saturation; in that zone the value is one tenth of it (§250.308(a)(2)-(4))","groundwater in an aquifer not used or currently planned to be used (§250.304(d))","residential standard"],"cite":{"instrument":"us_pa_act2_soil","title":"25 Pa. Code ch. 250 (Act 2) — Statewide health standard MSCs for soil, Appendix A Tables 3-4 (direct contact and soil to groundwater), as DEP publishes them","issuer":"Commonwealth of Pennsylvania, Environmental Quality Board (Department of Environmental Protection, Land Recycling Program)","edition":"the Appendix A tables in force from November 20, 2021 (51 Pa.B. 7173) as DEP publishes them: Table 3A November 2021, Table 3B January 2022, Tables 4A and 4B November 2023","source_url":"https://files.dep.state.pa.us/EnvironmentalCleanupBrownfields/LandRecyclingProgram/LandRecyclingProgramPortalFiles/GuidanceTechTools/VaporIntrusion/November_2021/Table%203a.pdf","source_sha256":"546e6e1ac858eb7cccc6d8f5a029fa8a9a4f7976e589cf983ef8f359b491dfb7","fetched_at":"2026-10-15","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"25 Pa. Code ch. 250 Appendix A, Table 3 - MSCs for Organic Regulated Substances in Soil, B. Soil to Groundwater Numeric Values (nonuse aquifer, R, Generic Value)","page":8,"quote":null}},{"id":"4010bac16643b1a2","parameter":"TETRAHYDROFURAN","value":"13","value_num":13,"unit":"mg/kg","direction":"max","kind":"guideline","medium":"soil","level":"regional","parameter_key":"cas:109-99-9","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","a soil-to-groundwater numeric value (§250.308(a)): a person may instead show the soil's SPLP leachate does not exceed the groundwater MSC, or use the soil buffer distance (§250.308(b)) or an equivalency demonstration (§250.308(d)); soil below 15 feet takes only this pathway (§250.305(f))","the option 100 times the applicable groundwater MSC, expressed as mg/kg (§250.308(a)(1))","groundwater in an aquifer not used or currently planned to be used (§250.304(d))","nonresidential standard"],"cite":{"instrument":"us_pa_act2_soil","title":"25 Pa. Code ch. 250 (Act 2) — Statewide health standard MSCs for soil, Appendix A Tables 3-4 (direct contact and soil to groundwater), as DEP publishes them","issuer":"Commonwealth of Pennsylvania, Environmental Quality Board (Department of Environmental Protection, Land Recycling Program)","edition":"the Appendix A tables in force from November 20, 2021 (51 Pa.B. 7173) as DEP publishes them: Table 3A November 2021, Table 3B January 2022, Tables 4A and 4B November 2023","source_url":"https://files.dep.state.pa.us/EnvironmentalCleanupBrownfields/LandRecyclingProgram/LandRecyclingProgramPortalFiles/GuidanceTechTools/VaporIntrusion/November_2021/Table%203a.pdf","source_sha256":"546e6e1ac858eb7cccc6d8f5a029fa8a9a4f7976e589cf983ef8f359b491dfb7","fetched_at":"2026-10-15","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"25 Pa. Code ch. 250 Appendix A, Table 3 - MSCs for Organic Regulated Substances in Soil, B. Soil to Groundwater Numeric Values (nonuse aquifer, NR, 100 X GW MSC)","page":8,"quote":null}},{"id":"3353ab2d4badf76c","parameter":"TETRAHYDROFURAN","value":"2.8E","value_num":2.8,"unit":"mg/kg","direction":"max","kind":"guideline","medium":"soil","level":"regional","parameter_key":"cas:109-99-9","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","a soil-to-groundwater numeric value (§250.308(a)): a person may instead show the soil's SPLP leachate does not exceed the groundwater MSC, or use the soil buffer distance (§250.308(b)) or an equivalency demonstration (§250.308(d)); soil below 15 feet takes only this pathway (§250.305(f))","the generic value of the soil-to-groundwater equation, for soil not in the zone of groundwater saturation; in that zone the value is one tenth of it (§250.308(a)(2)-(4))","groundwater in an aquifer not used or currently planned to be used (§250.304(d))","nonresidential standard"],"cite":{"instrument":"us_pa_act2_soil","title":"25 Pa. Code ch. 250 (Act 2) — Statewide health standard MSCs for soil, Appendix A Tables 3-4 (direct contact and soil to groundwater), as DEP publishes them","issuer":"Commonwealth of Pennsylvania, Environmental Quality Board (Department of Environmental Protection, Land Recycling Program)","edition":"the Appendix A tables in force from November 20, 2021 (51 Pa.B. 7173) as DEP publishes them: Table 3A November 2021, Table 3B January 2022, Tables 4A and 4B November 2023","source_url":"https://files.dep.state.pa.us/EnvironmentalCleanupBrownfields/LandRecyclingProgram/LandRecyclingProgramPortalFiles/GuidanceTechTools/VaporIntrusion/November_2021/Table%203a.pdf","source_sha256":"546e6e1ac858eb7cccc6d8f5a029fa8a9a4f7976e589cf983ef8f359b491dfb7","fetched_at":"2026-10-15","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"25 Pa. Code ch. 250 Appendix A, Table 3 - MSCs for Organic Regulated Substances in Soil, B. Soil to Groundwater Numeric Values (nonuse aquifer, NR, Generic Value)","page":8,"quote":null}},{"id":"52ff9b9a735e394f","parameter":"Tetrahydrofuran","value":"8.4","value_num":8.4,"unit":"mg/L","statistic":"daily_max","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"cas:109-99-9","place":["US"],"conditions":["route is direct","cites is 40 CFR 439","the discharge is of the Subpart A—Fermentation Products","existing sources (BAT)","table: Effluent Limitations (BAT)"],"cite":{"instrument":"us_40cfr439","title":"40 CFR Part 439 — PART 439—PHARMACEUTICAL MANUFACTURING POINT SOURCE CATEGORY","issuer":"U.S. Environmental Protection Agency","edition":"eCFR as of 2026-10-05","source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-10-05/title-40.xml?part=439","source_sha256":"109ea8c5ee22a37622c2aa91dd21d79e528a5f9f3e9d01ecc8dc18c25b6afd9e","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"40 CFR 439.14 (BAT)","page":null,"quote":"Tetrahydrofuran 8.4 2.6"}},{"id":"7c5783ec9f5027c3","parameter":"Tetrahydrofuran","value":"2.6","value_num":2.6,"unit":"mg/L","statistic":"monthly_avg","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"cas:109-99-9","place":["US"],"conditions":["route is direct","cites is 40 CFR 439","the discharge is of the Subpart A—Fermentation Products","existing sources (BAT)","table: Effluent Limitations (BAT)"],"cite":{"instrument":"us_40cfr439","title":"40 CFR Part 439 — PART 439—PHARMACEUTICAL MANUFACTURING POINT SOURCE CATEGORY","issuer":"U.S. Environmental Protection Agency","edition":"eCFR as of 2026-10-05","source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-10-05/title-40.xml?part=439","source_sha256":"109ea8c5ee22a37622c2aa91dd21d79e528a5f9f3e9d01ecc8dc18c25b6afd9e","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"40 CFR 439.14 (BAT)","page":null,"quote":"Tetrahydrofuran 8.4 2.6"}},{"id":"fdd53f09b26219da","parameter":"Tetrahydrofuran","value":"8.4","value_num":8.4,"unit":"mg/L","statistic":"daily_max","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"cas:109-99-9","place":["US"],"conditions":["route is direct","cites is 40 CFR 439","the discharge is of the Subpart A—Fermentation Products","new sources (NSPS)","(a) Any new source subject to this subpart must achieve the following standards:","table: Performance Standards (NSPS)"],"cite":{"instrument":"us_40cfr439","title":"40 CFR Part 439 — PART 439—PHARMACEUTICAL MANUFACTURING POINT SOURCE CATEGORY","issuer":"U.S. Environmental Protection Agency","edition":"eCFR as of 2026-10-05","source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-10-05/title-40.xml?part=439","source_sha256":"109ea8c5ee22a37622c2aa91dd21d79e528a5f9f3e9d01ecc8dc18c25b6afd9e","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"40 CFR 439.15 (NSPS)","page":null,"quote":"Tetrahydrofuran 8.4 2.6"}},{"id":"0e6c10626e63e8ca","parameter":"Tetrahydrofuran","value":"2.6","value_num":2.6,"unit":"mg/L","statistic":"monthly_avg","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"cas:109-99-9","place":["US"],"conditions":["route is direct","cites is 40 CFR 439","the discharge is of the Subpart A—Fermentation Products","new sources (NSPS)","(a) Any new source subject to this subpart must achieve the following standards:","table: Performance Standards (NSPS)"],"cite":{"instrument":"us_40cfr439","title":"40 CFR Part 439 — PART 439—PHARMACEUTICAL MANUFACTURING POINT SOURCE CATEGORY","issuer":"U.S. Environmental Protection Agency","edition":"eCFR as of 2026-10-05","source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-10-05/title-40.xml?part=439","source_sha256":"109ea8c5ee22a37622c2aa91dd21d79e528a5f9f3e9d01ecc8dc18c25b6afd9e","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"40 CFR 439.15 (NSPS)","page":null,"quote":"Tetrahydrofuran 8.4 2.6"}},{"id":"ee891fa049853e2b","parameter":"Tetrahydrofuran","value":"9.2","value_num":9.2,"unit":"mg/L","statistic":"daily_max","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"sewer","parameter_key":"cas:109-99-9","place":["US"],"conditions":["route is sewer","cites is 40 CFR 439","the discharge is of the Subpart A—Fermentation Products","existing sources (PSES)","table: Pretreatment Standards (PSES)"],"cite":{"instrument":"us_40cfr439","title":"40 CFR Part 439 — PART 439—PHARMACEUTICAL MANUFACTURING POINT SOURCE CATEGORY","issuer":"U.S. Environmental Protection Agency","edition":"eCFR as of 2026-10-05","source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-10-05/title-40.xml?part=439","source_sha256":"109ea8c5ee22a37622c2aa91dd21d79e528a5f9f3e9d01ecc8dc18c25b6afd9e","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"40 CFR 439.16 (PSES)","page":null,"quote":"Tetrahydrofuran 9.2 3.4"}},{"id":"3763ce20e5bdbb3b","parameter":"Tetrahydrofuran","value":"3.4","value_num":3.4,"unit":"mg/L","statistic":"monthly_avg","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"sewer","parameter_key":"cas:109-99-9","place":["US"],"conditions":["route is sewer","cites is 40 CFR 439","the discharge is of the Subpart A—Fermentation Products","existing sources (PSES)","table: Pretreatment Standards (PSES)"],"cite":{"instrument":"us_40cfr439","title":"40 CFR Part 439 — PART 439—PHARMACEUTICAL MANUFACTURING POINT SOURCE CATEGORY","issuer":"U.S. Environmental Protection Agency","edition":"eCFR as of 2026-10-05","source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-10-05/title-40.xml?part=439","source_sha256":"109ea8c5ee22a37622c2aa91dd21d79e528a5f9f3e9d01ecc8dc18c25b6afd9e","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"40 CFR 439.16 (PSES)","page":null,"quote":"Tetrahydrofuran 9.2 3.4"}},{"id":"e9d87a8103bfa0d2","parameter":"~Tetrahydrofuran","value":"18000","value_num":18000,"unit":"mg/kg","direction":"max","kind":"guideline","medium":"soil","level":"national","parameter_key":"cas:109-99-9","place":["US"],"conditions":["Resident Soil (mg/kg)"],"cite":{"instrument":"us_rsl_soil","title":"US EPA — Regional Screening Levels (RSLs), Summary Table (TR=1E-06, THQ=1.0), November 2024 — Soil","issuer":"U.S. Environmental Protection Agency (EPA)","edition":"November 2024","source_url":"https://semspub.epa.gov/src/document/HQ/405270","source_sha256":"0160dc81b4f55d738a354a74de92488f149946ebfa7c6a6c64592f45348043d7","fetched_at":"2026-09-19","source_status":{"checked":"2026-10-15","status":"not verified"},"section":null,"page":null,"quote":null,"table":"sols","column":"residentiel"}},{"id":"b8df4f8f526afdc6","parameter":"~Tetrahydrofuran","value":"95000","value_num":95000,"unit":"mg/kg","direction":"max","kind":"guideline","medium":"soil","level":"national","parameter_key":"cas:109-99-9","place":["US"],"conditions":["Industrial Soil (mg/kg)"],"cite":{"instrument":"us_rsl_soil","title":"US EPA — Regional Screening Levels (RSLs), Summary Table (TR=1E-06, THQ=1.0), November 2024 — Soil","issuer":"U.S. Environmental Protection Agency (EPA)","edition":"November 2024","source_url":"https://semspub.epa.gov/src/document/HQ/405270","source_sha256":"0160dc81b4f55d738a354a74de92488f149946ebfa7c6a6c64592f45348043d7","fetched_at":"2026-09-19","source_status":{"checked":"2026-10-15","status":"not verified"},"section":null,"page":null,"quote":null,"table":"sols","column":"industriel"}},{"id":"8cba0660427fb2b9","parameter":"~Tetrahydrofuran","value":"0.75","value_num":0.75,"unit":"mg/kg","direction":"max","kind":"guideline","medium":"soil","level":"national","parameter_key":"cas:109-99-9","place":["US"],"conditions":["Protection of Groundwater SSLs: Risk-based SSL (mg/kg); SSL values are based on DAF=1"],"cite":{"instrument":"us_rsl_soil","title":"US EPA — Regional Screening Levels (RSLs), Summary Table (TR=1E-06, THQ=1.0), November 2024 — Soil","issuer":"U.S. Environmental Protection Agency (EPA)","edition":"November 2024","source_url":"https://semspub.epa.gov/src/document/HQ/405270","source_sha256":"0160dc81b4f55d738a354a74de92488f149946ebfa7c6a6c64592f45348043d7","fetched_at":"2026-09-19","source_status":{"checked":"2026-10-15","status":"not verified"},"section":null,"page":null,"quote":null,"table":"ssl","column":"risque"}},{"id":"51de7d95a569d326","parameter":"~Tetrahydrofuran","value":"3400","value_num":3400,"unit":"µg/L","direction":"max","kind":"guideline","medium":"drinking_water","level":"national","parameter_key":"cas:109-99-9","place":["US"],"conditions":["Tap Water (ug/L): Regional Screening Level (RSL) Summary Table (TR=1E-06, HQ=1) November 2024"],"cite":{"instrument":"us_rsl_tapwater","title":"US EPA — Regional Screening Levels (RSLs), Summary Table (TR=1E-06, THQ=1.0), November 2024 — Tap Water","issuer":"U.S. Environmental Protection Agency (EPA)","edition":"November 2024","source_url":"https://semspub.epa.gov/src/document/HQ/405270","source_sha256":"0160dc81b4f55d738a354a74de92488f149946ebfa7c6a6c64592f45348043d7","fetched_at":"2026-09-19","source_status":{"checked":"2026-10-15","status":"not verified"},"section":null,"page":null,"quote":null,"table":"eau","column":"eau_robinet"}}],"next":[{"tool":"check_values","says":"Has your user measured this? check_values sets each of their results beside every row held here, with a verdict and the row's cite.","arguments":{"place":"US-PA"},"needs":{"rows":"Your user's measured results, as their table prints them: [{parameter: \"tetrahydrofuran\", value, unit}, ...], any other parameters too."},"post":"/api/v1/check"},{"tool":"read_certificate","says":"Has your user a laboratory certificate? read_certificate reads every row it prints, each with its page, and checks them against these limits.","arguments":{"place":"US-PA"},"needs":{"content_base64":"The laboratory's certificate (PDF) or its XLSX, XLS or CSV export, as base64; or file_url, a public https address of it."},"post":"/api/v1/certificate"}]}