WORK PLANS - Laserfiche WebLink

Home Browse Search

File No. 20-3941-0 LEO KLEI NFEL D E R March 6, 1997 REPORTING OF FEBRUARY 13, 1997 SAMPLING On February 13, 1997, a Kleinfelder field geologist advanced a single boring to a depth of 18-112 feet by means of a hand auger. During the advancement of that boring (Boring AB-1) soil samples were collected from depths of 5, 10, 14 and 18-1/2 feet below grade. The 14 and 18- 1/2 foot samples were submitted to Sequoia Analytical of Sacramento, California for chemical analysis. The remaining 2 samples were not analyzed. Total Purgeable Hydrocarbons as referenced to Gasoline (TPH-G) was detected in both samples. However, the concentration of TPH-G did attenuate from 180 to 3.4 mg/I (or parts per million, ppm). The chromatograph pattern for the samples were "weathered gasoline". Concentrations of some BTEX compounds and TPH-UEH were also detected. No detectable Total Lead was detected in either sample. The field protocol used, is outlined in Attachment A. For additional information, please refer to the attached chain of custody record and laboratory data sheets (Attachment B). PROPOSED SERVICES Task E01 - Permitting and Pre-Field Activities It has been Kleinfelder's experience that this proposal contains sufficient detail and information to be submitted to the PHS/EHD to review and approve a boring/well permit. Kleinfelder can prepare a boring/well permit application, a proposed boring/well location map, and a health and safety plan for submittal along with this proposal to PHS/EHD. Additionally, the permits must be approved prior to drilling the borings. Following obtaining approval from the PHS/EHD, Kleinfelder will commence the actual field assessment. Task E02 - Drilling of Three Soil Borin s Three (3) soil boring will be advanced vertically to a depth of approximately 50 feet below surface grade (bsg). All three of the borings will be advanced immediately surrounding the underground storage tank(UST) cluster. During the advancement of the borings, drilling returns and soil samples will be examined for lithologic classification and qualitative field screening, with an organic vapor analyzer (OVA). The OVA measures ionizable compounds in air in parts per million by volume (ppmv). Lithologic classification will be based on the Unified Soil Classification System (USCS). Currently, based on your correspondence and our experience, we anticipate groundwater in the vicinity of the project site to be present at a depth of 65 feet bsg. Therefore, at this time, we propose five (5) soil samples will be obtained from each boring for quantitative chemical analysis (the 15 foot, 25 foot, 40 foot, 45 foot and 50 foot samples). 20-3941-01.E011207PE075 Page 2 of 9 0 1997, Kleinfelder, Inc.