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detect threshold for iodide and a level of 0.1 µg/100 cm2 for methamphetamine and for this assessment. METHAMPHETAMINE ➢ The laboratory results reported the presence of methamphetamine in ten of the eleven wipe samples collected inside the house at levels ranging from 0.74 µg/100 cm2 on the Master Bedroom walls to 361 4g/100 c.m2 on the Hallway Ceiling and Wall Vent. ➢ The surface wipe samples collected from the kitchen, heater return vent and the hallway ceiling/ wall vents reported high levels of contamination. The samples collected from the master bathroom, master bedroom walls, hall bathroom and the northwest bedroom walls reported lower levels of contamination. ➢ Both of the soil samples collected were non-detect for methamphetamine. The water sample collected from the septic system reported methamphetamine at a level of 204 milligrams per liter (mg/L). Methamphetamine is not found in normal building materials or household chemicals. The level of methamphetamine reported in all samples collected was higher than the Sacramento County EMD threshold criteria. The presence of methamphetamine in wipe samples collected from the surfaces in the kitchen, living room, bathroom and bedroom confirms the existence of residual chemical contamination. The presence of methamphetamine in the aforementioned areas warrants the treatment and/or removal and disposal of the affected surfaces prior to re-occupancy. IODIDE Iodide is used as a target analyte to detect possible contamination from spilled iodine and/or hydriodic acid. ➢ Iodide was reported at levels <100 4g/100 cm2 in all surface wipe samples, <10 milligrams per kilogram (mg/kg) in both the soil samples, and <1 mg/L in the water sample collected from the septic system. ➢ The surfaces sampled do show contamination by iodide. PHOSPHOROUS BFC Properties 9 NETWORK ENVIRONMENTAL SYSTEKS,INC. Preliminary Site Assessment NES Project Number 04-261 26237 Miller Avenue, Escalon, California