TABLE 2

Average E. caproni ovum recoveriesa

Date of sampling (mo/day/yr) or additional samples after matrix spikesPlantTreatment stageAvg recovery (%)Maximum recovery (%)Minimum recovery (%)
10/19/15Pine CreekPost-grit removal2.43.91.7
Post-UV1.01.60.7
10/26/15BonnybrookPost-grit removal0.91.50.7
Post-UV1.11.80.8
11/9/15Pine CreekPost-grit removal1.52.41.1
Post-UV0.81.40.6
11/9/15BonnybrookPost-grit removal2.23.51.6
Post-UV3.25.12.3
12/7/15Pine CreekPost-grit removal0.71.20.6
Post-UV0.91.50.7
12/14/15BonnybrookPost-grit removal0.61.00.4
Post-UV1.62.51.2
Additional samplesPine CreekPost-grit removal9.1146.6
Post-UV6.4104.7
Pine CreekPost-grit removal5.18.23.7
Post-UV132210
Pine CreekPost-grit removal8.6136.2
Post-UV142210
Pine CreekPost-grit removal6.5104.7
Post-UV9.7157.0
  • a Average recovery is based on a 10-ovum E. caproni spike into the wastewater performed in triplicate. Maximum and minimum recoveries are calculated based on the maximum and minimum values observed for the copy numbers of 10 E. caproni ova in 4 replicates. These values are 1.1 × 106 and 4.7 × 106, respectively. Additional spikes (in triplicate) were performed to better capture variation in the extraction method.