COMPLIANCE INFO - Laserfiche WebLink

Home Browse Search

10 May 2019 AdvancedGeo AGE Project No. 18-4574 Environ mental Page 2 of 7 illustrated on Figure 3. A plan of the site with depicting post-abatement sampling locations is illustrated on Figure 4. Additionally, Tables 1 and 2 detail the laboratory sampling results, for both pre-abatement and post-abatement, respectively. 2.0. PRELIMINARY SITE ASSESSMENT SUMMARY Based on the Preliminary Site Assessment Work Plan (PSAWP) approved by the EHD on 07 January 2019, twenty-two (22) samples were collected within the property residence on 14 January 2019. The sample locations are identified in Figure 3. No exceptions to the EHD approved sampling plan were noted. 2.1. SAMPLING RESULTS AND DISCUSSION During the Preliminary Site Assessment sampling, a total of sixteen (16) discrete samples were collected from the common rooms of the residence. A total of six (6) composite samples were collected from auxiliary rooms within the residence. Sample locations are depicted in Figure 3. The EHD indicates that methamphetamine levels below 1.5 pg/100cm2 are safe for human occupancy and as such, this value was used as the threshold criteria in determining building components as either sufficiently clean or in need of cleaning or demolition. Methamphetamine concentrations exceeded the limit of 1 .5 micrograms per 100 square centimeters (pg/100 cm2) in all of the wipe samples collected within the property residence, at concentrations ranging from 3.0 pg/100 cm2 (Master closet wall) to 1,700 pg/100 cm2 (Kitchen sink). The results are summarized in the attached Pre-Abatement Sampling Results (Table 1). The highest level of contamination was reported in a surface-wipe sample collected from the kitchen sink facet. Additionally, elevated levels were reported in samples collected from bedroom 2 (meth conversion lab), the guest bathroom, the master bedroom, and the kitchen. Although field evidence suggests bedroom 2 as the main methamphetamine conversion (or cooking) area, relatively higher concentrations were reported throughout the residence. This suggests that the entirety of the property was utilized for handling of chemicals and product. 2.2. RECOMMENDATIONS Based on findings of initial sampling, the recommendations include: