Soil Description Organic Matter (%) Sand (%) Silt (%) Clay (%) Heterotrophs
(CFU/g of soil) (n=6)
Sandy soil, no contamination history (MC-A) 0.3 96 3 1 14946 ±508
Sandy loam soil, no contamination history (MC-B) 1.1 92 7 1 10648 ±225
Farm soil, with some pesticide application history (MC-C) 2.4 26 57 17 219030 ±1668
Greenhouse soil, with no known contamination (MC-D) 2 20 44 36 80285 ±4210
Fort Riley Soil, with petroleum contamination (MC-E) 4.4 24 45 31 631830 ±8652
Soil from MTBE lab study, with prior MTBE contamination (MC-F) 1.8 90 10 0 501386 ±9232
Table 2: Characteristics of soils used in extracting microbial cultures.