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I <br /> Marion M. T <br /> v Property <br /> p rty <br />' 950 Industrial Drive, Stockton, California <br /> Groundwater Sampling Report <br />' June, 1995 <br />' Narrative <br />' On September 29, 1995, WHF, Inc, in conjunction with HKM Groundwater, conducted field <br /> measurements, well pumping and groundwater sampling on three (3) groundwater monitoring <br /> wells located at this site(Figure 1 and 2) <br /> All sampling equipment was steam-cleaned prior to commencement of sampling These <br /> procedures were followed between each well, sampling point, and at the end of the sampling <br /> day De-ionized or orgatuc-free water (provided by the laboratory) was introduced into the <br /> batter as a final stage of cleaning <br /> I Immediately prior to sampling, water levels and well depth measurements were taken in all <br /> wells at the site(Table 1, Appendix B) Each well was evacuated using a stainless steel bladder <br /> type pump which does not introduce air into the water column The pH, temperature and <br /> electrical conductivity of the water was monitored as the wells were evacuated (Table 2) <br /> These parameters are noted on the Field Logs (Appendix B) Instruments calibrated to known <br /> standards were used to monitor these parameters At least three (3) well volumes were <br /> evacuated from each well, and more, of necessary, until the above parameters were stabilized <br /> Once stability was achieved,the samples were collected, labeled and chilled in an ice chest with <br /> Blue Ice® <br /> The samples were carefully poured from a Teflon bailer into half gallon plastic containers and <br /> clean glass vials with Teflon-lined screw caps provided by the laboratory Care was taken to <br /> ensure that no air space existed in the mals by inverting to check for bubbles and re-sampling if <br /> necessary The samples were analyzed or extracted wnthii 14 days according to their EPA <br /> methods <br /> A travel blank provided by the laboratory accompanied the sample vials from the time they <br /> Iwere picked up from the lab to the time they were returned to the laboratory This travel blank <br />. was only analyzed if the samples contained contaminants The travel blank and sample vials <br /> were then logged on a Cham of Custody Record and delivered to California Laboratory <br />