SITE HISTORY_CASE 2 - Laserfiche WebLink

Home Browse Search

Mar-26-99 10 :04A Kr�ri and As sac i atm 55948 2F0I P.C� lll` 5 l Project No.034-99039 Page No, 2 i PROCEDURES ; I The east dispenser area around former sample location -7 was initially excavated. Soil was removed based on presence of odor and elevated photoionization detector (P[D) readings: no soil staining was noted. At completion, the excavation measured approxi ately 10 feet by 10 feet by 8 feet deep. One grab confirmation sample(S-10) was taken at the base o the excavation. A sidewall composite sample (EE-comp) was created by combining grab samples,one ol[ected from each sidewall, at depths ranging � from 4 to 7 feet below ground surface(bgs). The west dispenser area was then excavated around form-.T sample location S-9. Again, no staining was note, soil was removed based on odor and PID readings. Final excavation size was approximately Ib feet by 12 feet by 10 feet deep. Grab confirmation sample S-I I was collected at the base of the excavation at a depth of tO feet bgs. Composite sample WE-camp was collected from depths at 4 to R fcxt bgs along excavation wails. The Krazan technician collected one enrnposite sam to (C-1) from the stockpile created during excavation activities. Following sample collection, the ends of the sarnpie sic ves were covered by TeflonO Elm and seated witlt tight fitting, plastic caps secured by TeflottV tape. The sample sleeves were labeled and placed in a (:()11ler elkesi, which contained synthetic iue and were cu led to approximately 4 degrees Celsius (4°C). The sarnples tivcre then transported under Chairs-of-C study protocu[ to a State-certified analytical laboratory for analysis. Based on previous analytical requirements of the SJCE D, the soil samples from beneath the dispenser islands were submitted for analysis of total petroleum hydrocarbons as diesel (TPH-D) by LUFT Method: benzene, toluene, ethylbeTi7ene and xylenes ( TEX); TPH as gasoline (TPH-G), and methyl tertiary butyl ether (MTBE) by EPA Method 8020• amples from beneath the dispensers were also analyzed for fuel oxygenates by EPA Method 8260B_ Stockpile samples were analyzed for TPH-D by DHS LUPT Method, BTEX/TPI[-GIMTBE by Methot 8020 and soluble lead by EPA Method 1311 (TC LP extraction)/3010, KRAZAN&ASSDC ATF-,INC. offices Serving the Western Vriked Slates .1a»a1W.nnn