ARCHIVED REPORTS XR0001415 - Laserfiche WebLink

Home Browse Search

til tai I Third Quarter 2005 Quarterly Groundwater Monitoring Report Raymond Investment Corporahon,Stockton,CA Page 3 TPH-G was detected at a concentration of 92 micrograms per liter(µg/L} and TEPH-D was detected at 82 f µg/L in the groundwater sample collected from MW-2 This marks the first time that petroleum hydrocarbons have been detected at or above the laboratory reported detection limits in a groundwater sample collected from monitoring well MW-2 To date, no petroleum hydrocarbons have been detected at or above the laboratory reported detection limits in the groundwater samples collected from monitoring well MW-3R FUTURE WORK/RECOMMENDATIONS - - Historic data for the site indicate that no BTEX contamination has been detected at or above the laboratory reported detection limits in any of the groundwater samples collected from the three site monitoring wells during one hydrogeologic cycle (four quarters of monitoring) A low concentration of,.,aj S j weathered gasoline range petroleum hydrocarbons was detected in one of the groundwater samples from Ate, up-gradient monitor well MW-1 and low concentrations of weathered gasoline and diesel range petroleum Ott 11 U JL hydrocarbons were detected in one of the groundwater samples collected from up-gradient monitor well was MW-2 Gasoline, diesel, kerosene, and motor oil range petroleum hydrocarbons have not been detected in "W M W 1 ed groundwater samples from the down-gradient monitor well MW-3R The data indicate that while the site W groundwater has been impacted with petroleum hydrocarbons, only very low concentrations of weathered45 � diesel and/or weathered gasoline remains The absence of BTEX at or above laboratory reported detection d V1�I limits strongly suggests that there is very low risk to human health or the environment related to the site 1'� groundwater Condor recommends, therefore, consideration for site closure LIMITATIONS This report was prepared under the direct supervision of a Professional Geologist in the State of • California The standard of care for all services performed or furnished by Condor is commensurate with the care and skill ordinarily used by members of the environmental profession practicing under similar conditions at the same time to the same locality Condor is not responsible for the accuracy and completeness of information collected and developed by others This report was prepared for the sole use of Raymond Investment Corporation and may not be used or relied upon by any other person(s) without the express written consent and authorization of Raymond Investment Corporation and Condor If any changes are made or errors found in the information used for this report, the interpretations and conclusions contained herein shall not be considered valid unless the changes or errors are reviewed by Condor and either appropriately modified or re-approved in writing Any questions regarding the content of this document should be addressed to Don Kr 409} 234-0518 ��® Cs � Respectfully submitted, Reviewed QO CONDOR EARTH TE OGIES, INC No � Y Thereasa A Jones Donald F Kresse, P G , C Hg) Staff Geologist Senior Environmental Hydrogeologist cc Beverly Garcia, Raymond Inc Vicky McCartney, SJCEHD James Burton, CRWQCB CONDOR J