FIELD DOCUMENTS - Laserfiche WebLink

Home Browse Search

26 February 2003 AGE-NC Project No. 03-0997 Page 2 of 3 through SB-3) were collected directly below the distribution box and at each leach-line trench. A hand auger was utilized to slant bore to approximately 4 feet below surface grade (bsg) at an approximate 45 degree angle to extend under the above-mentioned locations. A metric soil sampling hammer loaded with a pre-cleaned 6-inch long,2-inch diameter brass sleeve was then used to collect each soil sample. After collection, the ends of the brass sleeves were sealed with Teflon plastic sheets, and end caps were taped over the ends of each sample sleeve. The samples were properly labeled, placed in a chilled container and transported under chain-of-custody to Cal Tech Environmental Laboratory a State of California Department of Health Services (DHS)-certified laboratory. The soil samples were analyzed for: • Total petroleum hydrocarbons quantified as gasoline and diesel (TPH-g and TPH-d) in accordance with EPA Method 8015 Modified; • Total petroleum hydrocarbons quantified as oil and grease (TPH-o&g) in accordance with EPA Method 8015 Modified; • Total recoverable petroleum hydrocarbons(TRPH) in accordance with EPA Method 418.1; and • Full scan 8260b, reporting all peaks. RESULTS TRPH was detected in soil samples SB-2-4 and SB-3-4 at a concentrations of 40 mg/kg and 180 mg/kg respectively.None of the remaining target analytes were detected at concentrations above the detection limits. Copies of the laboratory report(CTEL Project No: CT214-0302060)and chain-of-custody form are included in Appendix A. RECOMMENDATIONS Based on the results of this investigation,AGE recommends that no further action be required at this site and the site be closed and removed from the Groundwater Protection/Underground Injection Control Program This recommendation was submitted verbally to Margaret Lagorio of SJC-EHD and was verbally approved on 13 February 2003. Additionally, based upon verbal agreement from SJC-EHD,an AGE representative informed the client on 13 February 2003 that the septic tank could be uncapped and normal use of the system could commence.