Common use of Bioreactor System Layout and Design Clause in Contracts

Bioreactor System Layout and Design. The proposed study area will be in the landfill’s “Phase Development Areas” Phases 1, 2, 3, 4, and 11. In Phases 1 and 2, liquid will be applied in trenches; excavated beneath the surface of the landfill. The area in Phases 1 and 2 where liquids will be applied covers an area of about 10 acres. Phases 3, 4, and 11 will be used as control cells where no liquid will be applied; only rainwater that naturally falls and percolates beneath the landfill surface will enter the waste in these phases. The goals of the design for the system will be the following: • recirculate all of the leachate generated at the facility (i.e., up to about 4,000,000 gallons per year); • uniformly distribute leachate throughout the waste mass in the test (i.e., liquid application) area; • minimize the potential for the occurrence of seeps by placing distribution structures at least 50 feet from the crests of outward slopes; • evaluate the relative effectiveness of different horizontal trench designs for uniformly distributing leachate throughout the waste mass; • identify several leachate delivery options to simplify operations; • provide monitoring features within the horizontal trenches so that liquid head and distribution rate within the trenches can be measured and documented; and • manage landfill gas at all times, including during and following liquid application events, to ensure a full compliance with applicable air quality permit requirements, and rules and regulations including 40 CFR part 60 subpart WWW, (the MSW Landfills NSPS). An active landfill gas collection and control system is currently in operation at the site. The landfill gas collection and control system components will be enhanced if there is a potential to exceed the applicable air quality permit requirements, and rules and regulations. • Minimize uncontrolled releases of landfill gas emissions The manner in which these goals are addressed in this application are summarized on Table 5. The design of the Maplewood bioreactor system is based on analytical methods developed by Xxxxx, et. al., [1998.] In general, the design was developed based on the following considerations.

Bioreactor System Layout and Design. A conceptual process flow diagram for operation of the bioreactor is presented on Figure 3. The proposed overall study area will be in established within the landfill’s “Phase Development Areas” Phases 1, MSW Cells 2, 3, 4, and 114 of the King Xxxxxx County Landfill. In Phases 1 and 2, liquid Liquid will be applied in trenchesCell 3; excavated beneath Cells 2 and 4 will be the surface of the landfill. The area control cells in Phases 1 and 2 where which no liquids will be applied applied. The overall study area, (i.e., Cells 2, 3, and 4) covers about 59 acres; the area in Cell 3 where the bioreactor program will be implemented covers an area of about 10 acres. Phases 3, 4, Cell 1 is currently under construction (July 2000) and 11 will be used as a future control cells where no liquid will be applied; only rainwater that naturally falls and percolates beneath the landfill surface will enter the waste in these phasesarea. The goals of the design for the system bioreactor will be the following: • recirculate all of the leachate generated at the facility (i.e., up to about 4,000,000 gallons per year plus additional liquid so that the total liquid application rate is about 8,000,000 gallons per year); • uniformly distribute leachate throughout the waste mass in the test area (i.e., liquid application) area); • minimize the potential for the occurrence of seeps by placing distribution structures at least 50 feet from the crests of outward slopes; • evaluate the relative effectiveness of different horizontal trench designs for uniformly distributing leachate throughout the waste massliquids in promoting biodegradation by monitoring surface settlement by cell areas and noting which types of liquids have been applied in those areas; • identify several leachate delivery options to simplify operations; • provide monitoring features within the horizontal trenches liquid application structures so that liquid leachate head and distribution rate within the trenches can be measured and documentedmonitored effectively; and • manage landfill gas during liquid application events at all times, including during and following liquid application events, to ensure a full compliance with applicable air quality permit permits requirements, and rules and regulations including 40 CFR part 60 subpart WWW, WWW (the MSW Landfills NSPS). An As shown in the design report [Geosyntec 2000a] based on the age of its wastes, the provisions of 40 CFR Subpart WWW and other air quality regulations require that the King Xxxxxx Xxxxxxxx have installed and are operating an active landfill gas collection system prior to the commencement of liquid addition, and control system is currently in operation at the site. The to conduct subpart WWW-compliant landfill gas collection and control monitoring, beginning no later than the first application of liquids. If odor problems or air quality problems occur, then the system components will be enhanced if there is a potential to exceed adjusted or expanded as needed (e.g. using additional extraction xxxxx or trenches or by placing less permeable cover over affected areas.) The system performance will be documented through routine monitoring of the applicable air quality permit requirements, and rules and regulations. • Minimize uncontrolled releases of landfill gas emissions for the presence of methane and other constituents. The manner in which these goals are addressed in this application are summarized on Table 53. The design of the Maplewood bioreactor system is will be based on analytical methods developed by Xxxxx, et. al., . [1998.] as described in Section 4 of the design report [GeoSyntec, 2000b]. In general, general the design was developed based on the following primary considerations.

Bioreactor System Layout and Design. A conceptual process flow diagram for operation of the bioreactor is presented on Figure 3. The proposed overall study area will be in established within the landfill’s “Phase Development Areas” Phases 1, MSW Cells 2, 3, 4, and 114 of the King Xxxxxx County Landfill. In Phases 1 and 2, liquid Liquid will be applied in trenchesCell 3; excavated beneath Cells 2 and 4 will be the surface of the landfill. The area control cells in Phases 1 and 2 where which no liquids will be applied applied. The overall study area, (i.e., Cells 2, 3, and 4) covers about 59 acres; the area in Cell 3 where the bioreactor program will be implemented covers an area of about 10 acres. Phases 3, 4, Cell 1 is currently under construction (July 2000) and 11 will be used as a future control cells where no liquid will be applied; only rainwater that naturally falls and percolates beneath the landfill surface will enter the waste in these phasesarea. The goals of the design for the system bioreactor will be the following: • recirculate all of the leachate generated at the facility (i.e., up to about 4,000,000 gallons per year plus additional liquid so that the total liquid application rate is about 8,000,000 gallons per year); • uniformly distribute leachate throughout the waste mass in the test area (i.e., liquid application) area); • minimize the potential for the occurrence of seeps by placing distribution structures at least 50 feet from the crests of outward slopes; • evaluate the relative effectiveness of different horizontal trench designs for uniformly distributing leachate throughout the waste massliquids in promoting biodegradation by monitoring surface settlement by cell areas and noting which types of liquids have been applied in those areas; • identify several leachate delivery options to simplify operations; • provide monitoring features within the horizontal trenches liquid application structures so that liquid leachate head and distribution rate within the trenches can be measured and documentedmonitored effectively; and • manage landfill gas during liquid application events using at all times, including during and following liquid application events, to ensure a full compliance with applicable air quality permit permits requirements, and rules and regulations including 40 CFR part 60 subpart WWW, WWW (the MSW Landfills NSPS). An As shown in thedesing report [Geosyntec 2000a] based on the age of its wastes, the provisions of 40 CFR Subpart WWW and other air quality regulations require that the King Xxxxxx Xxxxxxxx have installed and are operating an active landfill gas collection system prior to the commencement of liquid addition, and control system is currently in operation at the site. The to conduct subpart WWW-compliant landfill gas collection and control monitoring, beginning no later than the first application of liquids. If odor problems or air quality problems occur, then the system components will be enhanced if there is a potential to exceed adjusted or expanded as needed (e.g. using additional extraction xxxxx or trenches or by placing less permeable cover over affected areas.) The system performance will be documented through routine monitoring of the applicable air quality permit requirements, and rules and regulations. • Minimize uncontrolled releases of landfill gas emissions for the presence of methane and other constituents. The manner in which these goals are addressed in this application are summarized on Table 53. The design of the Maplewood bioreactor system is will be based on analytical methods developed by Xxxxx, et. al., . [1998.] as described in Section 4 of the design report [GeoSyntec, 2000b]. In general, general the design was developed based on the following primary considerations.