Solid Waste Management Program
Air Sampling - Bridgeton Sanitary Landfill
Updated Oct. 27, 2013
Photo of air sampling near Bridgeton Landfill Oct. 24, 2013
Bridgeton Landfill's Installation of North Quarry Enhanced Gas Collection and Control System to Begin
On Oct. 23, 2013, the department issued a comment letter with conditional approval of Republic Services' Bridgeton Landfill North Quarry Action Plan. Republic Services notified the department that they will begin expansion of the North Quarry gas collection and control system on Nov. 1, 2013. The department continues weekly air sampling and daily air monitoring activities.
Bridgeton Landfill's Installation of Additional 7 acres of EVOH liner more than 50% Complete
On Oct. 4, 2013, Republic Services advised the department that approximately five acres of the additional EVOH liner planned for installation in the South Quarry had been completed. In the coming week, Republic Services indicated work will continue on the EVOH liner installation, weather permitting.
Photo of additional EVOH capping material installation.
Bridgeton Landfill Continues Work to Improve Odor Management
On Aug. 19, 2013, Bridgeton Landfill notified the department from ongoing review of landfill operations that some areas of the previously installed HDPE liner were not as effective at capturing odors as the EVOH material in the new South Quarry cap. As a result of the review, the facility will be covering the 7.5-acre HDPE liner with the new EVOH material as well as extending its use into other strategic areas to target smaller sources of odor. Bridgeton Landfill also continues preparation work for the facility's planned construction of an enhanced leachate-treatment system and installation of a candlestick flare system that will improve efficiency of the landfill’s existing gas collection and control system. When completed, Bridgeton Landfill's EVOH capping system will cover a total of approximately 42 acres, including the entire south quarry waste mass and surrounding area on each side.
The department continues air monitoring activities using the department’s AreaRae system and a hand-held hydrogen-sulfide detector, a benzene detector and an odor detector as well as weekly air sampling submitted for laboratory analysis and Department of Health and Senior Services review.
EVOH Capping System on South Quarry Complete
As of Aug. 7, 2013, Bridgeton Landfill completed covering the South Quarry with the EVOH capping system and continued enhancement of the facility's gas collection and control system to better manage odors resulting from the subsurface smoldering event at the landfill. Additionally, Bridgeton Landfill continues work on various projects related to leachate management and disposal.
Beginning Jun 4, 2013 and continuing through Aug. 31, 2013, the department and our air sampling contractor continued to conduct air monitoring activities using the department’s AreaRae system and a hand-held hydrogen-sulfide detector, a benzene detector and an odor detector. With completion of the intrusive work required to abandon the six reinforced concrete pipes and install the 25 perimeter collection sumps, air monitoring activities were returned during this period to their pre-construction levels.
Photos of RCP abandonments May-June, 2013.
RCP Abandonment Complete
From May 20 until June 3, 2013, enhanced air sampling and monitoring was conducted in the areas surrounding the Bridgeton Landfill. These air sampling and monitoring activities were in addition to the air monitoring being conducted using the department's AreaRAE system.
The department’s contractor conducted four-hour air samplings at locations outside the permitted boundary of the landfill during each RCP’s abandonment. (A total of six sampling events.) A map was generated each day samples were collected reflecting locations based upon weather conditions. These events included sampling for VOCs, reduced sulfur compounds and aldehydes. Daily monitoring events continued to occur on a scheduled path twice per day and were expanded to include additional monitoring cycles at downwind locations during construction activity. During the week of May 29, a comprehensive sampling event was started and was completed on June 17-18, 2013. Results from this comprehensive sampling event are available on the Reports webpage.
April 22, 2013 - Weekly sampling events began, continued through completion of the interim cap on the south quarry and are continuing for a period of time following completion of the interim cap. Once per week, the department’s contractor conducts a four-hour sampling of two upwind and two downwind locations outside the permitted boundary of the landfill. The event includes VOCs, reduced sulfur compounds and aldehydes.
Immediate Sampling Events - Exact locations are determined by a triggering event and local weather conditions. These events are similar to weekly sampling events, the department’s contractor or staff conduct a four-hour sampling of two upwind and two downwind locations. The immediate sampling event provides data to evaluate differences in concentrations that occur due to an unexpected event at the permitted facility. These sampling events will include the same compounds as the weekly sampling events.
April 19, 2013 - Daily Monitoring Events began, continued through completion of the interim cap on the south quarry and are continuing for a period of time following completion of the interim cap. The department is conducting air monitoring at a minimum of 12 locations using a hand-held hydrogen-sulfide detector, benzene detector and an odor detector. Sampling occurs around the perimeter of Bridgeton Sanitary Landfill twice per day and as needed, based upon community complaints received between the two daily cycles.
April 16, 2013 - A comprehensive sampling event began on this date and completion was postponed due to weather and construction delays. Work on this initial comprehensive sampling event was completed the week of May 6. The department's contractor conducted sampling and the laboratory analyzed a total of 183 compounds from upwind, downwind, source gas and on-site locations including the landfill's gas collection system. The sampling results and Department of Health and Senior Services review of the laboratory reports can be viewed on the Reports website.
Two of the sampling locations were close to the perimeter of the landfill, in order to evaluate emissions immediately upwind and downwind of the landfill. Additionally, the department's contractor collected eight samples for odor analysis by the St. Croix olfactory method (ASTM-E679). A comprehensive sampling event was also completed during the RCP abandonment construction activity and those reports and Department of Health and Senior Services review are also available on the Reports website.
The following documents provide additional details about the enhanced air sampling and monitoring events.
Photos of Weekly Air Sampling by Department Staff and Contractor
Air Sampling Results
The department continues to forward all air sampling results to the Department of Health and Senior Services so it can evaluate potential public health concerns related to air quality. Air sampling results have been scientifically validated and are posted on the Reports website. DHSS will also post the health analysis on its website at health.mo.gov/bridgeton.
Previous Bridgeton/Republic Air Sampling
Bridgeton/Republic completed a comprehensive air sampling on Aug. 16 and 17, 2012 with Solid Waste Management Program staff overseeing and evaluating the sampling process. An air sampling report was submitted on Oct. 21, 2012 for Bridgeton/Republic by their contractor. The report characterizes the upwind, downwind and source air to view the report.