Laserfiche WebLink
'S ".$'.- S-� C?� �A�J� . �� '+Y'43PF�fAK�4'iTdiFlle� _ � —.- .. Y� _'�t;•• <br /> S <br /> F� <br /> Grab samples of cuttings were logged continuously during <br /> ..� drilling for identification of stratigraphy and detection of <br /> hydrocarbon contamination. Field screening of volatile <br /> organics emitted from the soils was conducted with a <br /> photoionization detector (PID) . The PID readings are <br /> plotted adjacent to the soil intervals tested on the well <br /> �+ log (Appendix: III). Discrete samples were taken at five <br /> foot intervals to the water table starting at 15.0 feet <br /> below grade. These samples were collected in two inch <br /> diameter brass tubes using a California modified sampler. <br /> Samples were collected, preserved and transported under <br /> chain-of-custody in accordance with WaterWork's Soil <br /> Sampling Protocol (Appendix IV). The 15.0, 20.0 25.0, and <br /> 30.0 foot samples were analyzed for one or more of the <br /> following: BTEX (EPA 8020), TPHG and TPHD (DOHS LUFT) , <br /> Chlorinated hydrocarbons (EPA 8010), Semi Volatile organics <br /> and PCB's (EPA 8270), oil and grease (EPA 503), and The <br /> metals Cd Cadmium, Cr Chromium, Pb lead, and Zn Zinc. The <br /> laboratory results of these samples are summarized on Tables <br /> 2 and 3. The laboratory data sheets, laboratory quality <br /> control data and chain-of-custody form for these samples are <br /> contained in Appendix V. <br /> Subsequent to installation and well development, water <br /> samples were collected on February 13 and April 4, 1990, <br /> after purging a minimum of four well volumes (casing and <br /> sand pack) from each well. The purging logs are presented in <br /> Appendix VI. The parameters electrical conductivity (EC), <br /> pH and temperature were checked during purging, and before <br /> and after sample collection to ensure samples collected are <br /> reprasentative of formation water. Purged water was <br /> �- contained on site within 55 gallon drums pending the return <br /> of laboratory analysis. Water sample collection, <br /> preservation and transportation under chain of custody was <br /> conducted in accordance with WaterWork's Groundwater <br /> Sampling Protocol (Appendix IV). The groundwater samples <br /> were analyzed for one or more of the following: BTEX (EPA <br /> 8020), TPHG and TPHD (DOHS LUFT), Chlorinated hydrocarbons <br /> (EPA 8010), semi Volatile organics and PCB's (EPA 8270), oil <br /> and grease (SPA 503), and the metals Cd, Cr, Pb and Zn (AA). <br /> The laboratory results of these samples are summarized d onn <br /> — Tables 4. The laboratory data sheets, laboratory quality <br /> control data and chain-of-custody form for these samples are <br /> contained in Appendix VII. <br /> 3.3 Phase 3 <br /> To complete the preliminary assessment of soil conditions on <br /> - the south side of the waste oil tank the proposed angle <br /> boring wasdrilled on February 26, 1990. This boring was <br /> drilled at a 309 angle_ to vertical--to-obtain samples-beneath __-- <br /> _" the existing on-site building. Soil samples were collected <br /> at auger depths of 10.0, 17.5 and 25.5 which due to the <br /> inclination of the boring equate to B, 15 and 22 feet below <br /> ground level, respectfully. The location and orientation of <br /> 4 <br />