SCAQMD Air Monitoring Locations in the City of Paramount
Community of Paramount - Air Monitoring
Expanded Monitoring Data and Map (PDF)
Hexavalent chromium air monitoring results and a map identifying the sites in the city of Paramount for the expanded air monitoring effort that began on October 15, 2016.
- Wind Roses (PDF) (What is a Wind Rose?)
Assessment of Initial Data from Expanded Monitoring of Hexavalent Chromium in Paramount (PDF) - Nov. 4, 2016
Additional background information on the SCAQMD's expanded monitoring efforts in Paramount beginning Oct. 2016. The report includes initial sampling results from Oct. 15 to Nov. 2, 2016.
- Site 2 Ambient Concentration Data (PDF) - Aug., 2013 - Aug. 2017
Multi-metals air monitoring results for Site #2 on Vermont Avenue that began in 2013.
- Site 3 Ambient Concentration Data (PDF) - Nov. 2013 - Aug. 2017
Multi-metals air monitoring results for Site #3 on California Avenue that began in 2013.
- Sites 8, 15, 19, 23, and 24 Ambient Concentration Data (PDF) - Dec. 2016 - April 2017
Multi-metals air monitoring results for Sites #8, 15, 19, 23, and 24.
Report on Updated Air Monitoring and Preliminary Assessment of Health Impacts (PDF) - Aug. 10, 2016
Provides a summary of air sampling results and preliminary estimates of health risks based on long-term monitoring data in the community at Sites #2 and #3. Also provides a summary of SCAQMD rule development activities to address emissions from grinding operations at metal forging facilities.
Schools - Monitoring Results & Assessments
Air Monitoring Results for Schools (PDF)
SCAQMD is working with the California Air Resources Board to conduct air monitoring at schools in the city of Paramount. Results for hexavalent chromium air monitoring and a map identifying the schools in the city of Paramount are provided in this report.
- Assessments of Hexavalent Chromium Data at Paramount Schools
Updated assessments of the air sampling results at the Paramount schools. Reports are updated as additional data from school-based sampling becomes available.
Individual Sites - Air Sampling, Source Test Reports & Calculation Methodology
- Air Monitoring at Carlton Forge Works (PDF) - Dec. 2014
A summary of air sampling, material sampling, and SCAQMD actions and Carlton Forge Works voluntary actions. Includes air sampling results from Aug. 2013 to Dec. 2014.
- Air Monitoring at Carlton Forge Works (PDF) - Jan. 2014
A summary of air sampling, material sampling, and SCAQMD actions and Carlton Forge Works voluntary actions. Includes air sampling results from Aug. 2013 to Dec. 2013.
- Air Quality Testing
SCAQMD collected samples inside the following facilities to identify the specific equipment or processes within the facility that could be the sources of hexavalent chromium emissions that could explain the elevated levels seen at the ambient monitors. Once the sources of emissions have been identified, SCAQMD can guide the facility to then reduce the emissions from those possible sources. Several possible sources were identified from the facilities that showed elevated levels of hexavalent chromium.
- Screening Source Test Report for Aerocraft (Source Test 16-333) (PDF, 6Mb) - Dec. 9, 2016
- Screening Source Test Report for Anaplex (Source Test 16-334) (PDF, 11Mb) - Dec. 9, 2016
- Screening Source Test Report for Carlton Forge Works (Source Test 17-340) (PDF, 3Mb) - Sept. 1, 2017
- Screening Source Test Report for Lubeco (Source Test 17-337) (PDF, 6Mb) - June 9, 2017
- Screening Source Test Report for Mattco Forge (Source Test 17-336) (PDF, 3Mb) - June 2, 2017
- Screening Source Test Report for Press Forge (Source Test 17-338) (PDF, 9Mb) - Sept. 1, 2017
- Screening Source Test Report for Weber Metals (Source Test 17-339-341-343) (PDF, 7Mb) - Sept. 1, 2017
- Calculation Methodology for Evaluating Sampling Results for Curtailment Threshold for Orders for Abatement (PDF) - March 2, 2017
This calculation methodology describes the approach used to determine each facility’s contribution to a local monitor’s level of hexavalent chromium. Under the Stipulated Orders for Abatement for Anaplex and Aerocraft, curtailment of any chrome emitting operation is required if hexavalent chromium levels are more than 1.0 ng/m3 of hexavalent chromium to any monitor, averaged over three samples. This calculation methodology takes into account each facility’s contribution, typical levels of hexavalent chromium found regionally, and contributions from local sources. This approach may be modified in the future as more information becomes available.