Laserfiche WebLink
hole. Allow cement to cure for at least 24 hours prior to sampling. As illustrated in <br /> Figure 8,create a schematic identifying the location of each sub-slab probe. As described <br /> in the Section III A, only use 1 L, 100 % certified Summa canisters for sub-slab soil <br /> vapor sampling. <br /> 9 <br /> q <br /> Figure 4. Drilling through a slab(left),and inner and outer holes(right;EPA). <br /> Recessed <br /> -Threaded Cap <br /> -Cement Grout <br /> Brass or Stainless <br /> Steel Threaded <br /> =illirg or <br /> Corrpressio- <br /> citting <br /> Brass or Starless <br /> Concrete Steel-ub ng <br /> Slab <br /> ��a .•,n ttk, <br /> Figure 5. General schematic of sub-slab Figure 6. Stainless steel sub-slab vapor <br /> vapor probe (EPA). probe components(EPA). <br /> ETC Soil Vapor Sampling Technical Toolkit 13 <br /> Version 1.4, September 7, 2005 <br />