Solid Waste Management Program
Air Sampling - Bridgeton Sanitary Landfill
Updated Jan.. 24, 2014
Photo of air sampling near Bridgeton Landfill Dec. 11, 2013
Bridgeton Landfill to Resume Work on Enhancement of North Quarry Gas Collection and Control System mid-February, 2014
On Dec. 19, 2013, Bridgeton Landfill staff met with the department, fire department and county officials to discuss work completed during December and plans for the coming month. Bridgeton staff provided details on the recent leachate release and ongoing clean-up activities. Bridgeton staff noted enhancements to the flare yard are nearing completion. Heavy construction work related to drilling of additional gas extraction wells and capping of the remainder of the North Quarry will not restart until Feb. 15, weather permitting. Work on the four 1-million gallon tanks, a part of the new leachate pre-treatment system, will restart on Jan. 6, weather permitting. The department continues weekly air sampling and daily air monitoring activities. The department continues weekly air sampling and daily air monitoring activities.
Bridgeton Landfill Has Malfunction in Equipment Resulting in Leachate Release and Potential for Odors
On Dec. 12, 2013, Bridgeton Landfill advised the department a pump malfunction due to recent freezing temperatures resulted in a leachate release earlier today. Bridgeton Landfil staff identified and is now in the process of cleaning-up the leachate release. During the clean-up process, there exists the potential for some odors off-site. The department continues weekly air sampling and daily air monitoring activities.
Bridgeton Landfill Notified Department that Routine Gas Extraction Well Maintenance May Result in Odors
On Dec. 10 and 11, 2013, Bridgeton Landfill notified the department routine maintenance work was being completed on a gas extraction well (GEW-19A) on the southwest corner of the landfill. The potential for some odors to result from this maintenance work will result until the work is completed.
Bridgeton Landfill Provides Update on Installation of North Quarry Enhanced Gas Collection and Control System
On Nov. 22, 2013, while inclement weather prevented drilling on Thursday, Nov. 21, Bridgeton Landfill reported 21 of 30 gas extraction wells and all of the toe drain collection sumps (12) for the North Quarry area have been completed. Bridgeton staff advised the heavy construction work has been suspended until after the Thanksgiving holiday. No construction activity is planned on the four 1-million gallon tanks next week while concrete work is completed on the containment area. Gas extraction well drilling activities are scheduled to resume on Dec. 2, weather permitting. Bridgeton Landfill staff noted that routine facility monitoring and related operational maintenance activities will continue without interruption. The department continues weekly air sampling and daily air monitoring activities.
Bridgeton Landfill Continues Work on Installation of North Quarry Enhanced Gas Collection and Control System
On Nov. 15, 2013, Bridgeton Landfill updated the department on construction activities completed during the current week and planned work for this weekend. This week, Bridgeton Landfill completed 13 of 30 planned gas extraction wells and 9 of 12 new toe drain collection sumps. Bridgeton Landfill plans to continue working on installation of additional wells and toe drain sumps on Saturday, weather permitting. The potential for odors to periodically be generated during these drilling activities continues through the first week of December when this phase of the project should be completed, weather permitting. The department continues weekly air sampling and daily air monitoring activities.
Bridgeton Landfill Begins Installation of New Landfill Gas Extraction Wells in the North Quarry
On Nov. 4, 2013, Republic Services began installation of 30 new landfill gas extraction wells in the North Quarry of Bridgeton Landfill on Friday, Nov. 1, 2013. As of Monday, Nov. 4, 2013, Republic Services advised approximately 2.5 of the 30 wells had been installed. Republic Services notified the department the potential for some odor releases during drilling operations for the remaining wells exists over the next 30 days, weather dependent. To assist in controlling odors released during these construction activities, Republic Services uses a vacuum box on drilling equipment along with odor neutralizers. The department continues weekly air sampling and daily air monitoring activities.
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. The department continues weekly air sampling and daily air monitoring activities.
On Sept. 30, 2013, Republic Services informed the department that 4.65 acres of the additional 7.5 acres of EVOH liner have been installed on the north and east sides of the South Quarry. The work crew will continue installing EVOH material on the west side of the landfill. Additionally, two new candlestick flares are now operational and have taken the place of two older enclosed flares. The new flares, combined with a new blower that was also installed, will improve the efficiency of the landfill’s gas collection system. The department continues weekly air sampling and daily air monitoring activities.
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.
In times of extreme weather and atmospheric conditions, sensitive electronic equipment, including AreaRae air monitors, may be set to standby mode to avoid damage to the units. When this occurs, the use of handheld air monitoring devices will continue, with additional use and deployments added as is necessary and possible, in addition to the regular, twice-daily scheduled paths. Supplemental use of the handheld air monitors will continue until atmospheric and weather conditions allow for the AreaRae monitors to be brought back into operation.
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.