The US Environmental Protection Agency’s controversial final risk evaluation for 1,4-dioxane found unreasonable risks to workers and occupational non-users for 13 out of 24 use conditions, but no unreasonable risks to the environment, the general public, consumers, and bystanders. On December 31,...
to include air and water exposures on thegeneral population 鈥 an addition to the risk evaluation completed under the Trump administration that centered on work-related exposures.According to a draft supplement, 1,4-dioxane is estimated to pose a cancer risk "higher than 1 in 1 million for ...
美国环境保护署(EPA)发布了根据《有毒物质控制法》(TSCA)对溶剂1,4-二氧六环(CAS# 123-91-1)进行风险评估和确定最终风险的补充。EPA已确定该化学物质对人类健康构成不合理的伤害风险。1,4-二氧六环有可能致癌并损害肝脏和鼻腔组织。 尽管1,4-二氧六环是根据修订后的TSCA法规审查的首批十种化学物质之一,但EPA ...
Regan Touts Urgency Of 1,4-Dioxane Evaluation As Cleanup Fears Grow EPA Administrator Michael Regan is underscoring the agency's urgency in seeking to regulate 1,4-dioxane, telling lawmakers this week that officials are prioritizing evaluating the chemical to determine whether to regulate it under ...
美国环境保护署(EPA)发布了根据《有毒物质控制法》(TSCA)对溶剂1,4-二氧六环(CAS# 123-91-1)进行风险评估和确定最终风险的补充。EPA已确定该化学物质对人类健康构成不合理的伤害风险。1,4-二氧六环有可能致癌并损害肝脏和鼻腔组织。 尽管1,4-二氧六环是根据修订后的TSCA法规审查的首批十种化学物质之一,但EPA ...
Using ORS data, unlike point sources wherein emissions ORS Handbook, Section 1.3 Revision No: 1.0 Date: 12/01/11 Page 16 of 33 measurements are typically straightforward, a more critical evaluation of the ORS method application, the emission mechanism of the source, and the source activity is...
Appendix C USEPA Region 3 and Region 9 Screening Values Section C.1 USEPA Region 3 Screening Values UNITED STATES ENVIRONMENTAL PROTECTION AGENCY REGION III 841 Chestnut Building Philadelphia, Pennsylvania 19107 1 SUBJECT: Risk-Based Concentration Table DATE: 4/2/2002 FROM: TO: Jennifer Hubbard, ...
1.1.1 Reporting Limits for Method 8270 3 Table 1.0 Typical Reporting Limits 4 1.1.2 General Quality Control Requirements 4 Table 1.1 IDOC Requirements 5 1.2 Summary of Method 8270 6 1.2.1 Sample Extraction and Cleanup 6 1.2.2 GC/MS Analysis in Full Scan Mode 7 1.2.3 GC/MS System ...
the cancer-causing chemical 1,4-dioxane is a common drinking water contaminant, but EPA ignored this in its current evaluation, leaving communities at risk. Communities' ongoing exposure to past spills are not factored in to the TSCA evaluation of risk, although best scientific practice would cons...
fiscal year 2024 budget request names the supplemental 1,4-dioxane evaluation as one of several "foundational activities" to its development of "aggregate exposure and cumulative risk approaches to characterizing chemical exposure and risk in risk evaluations under" the Toxic Substances Control Act (...