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i <br /> i <br /> Thatcher Company of California, Inc., Stockton <br /> IV. Sample Information <br /> Sample #(s): TCS-01A and B Primary Sampler Assistant sampler <br /> Date and Approx Time Collected: Dylan Clark Bonny Lew <br /> 11/28/2018, 2:20 p.m. <br /> Photographer Documenter Other sampling assists <br /> Bonny Lew Anne Ekker Xaiomei Ma <br /> Primary Sampler: ® Inner Gloves ® Outer Gloves ® Suit Kleenquard <br /> ❑ Respirator type Level D <br /> Sample Container Used: <br /> Glass Jars: Sample TCS-01A: one-gallon jar. Sample TCS-01B: one-gallon jar. <br /> Other sample container used: N/A <br /> ❑ Co-located sample(s) collected for facility <br /> Sample device used: ❑ Plastic Scoops ❑ COLIWASA ❑ Pond Skimmer ❑ Gloved hand <br /> ® Direct pour into sample container ® Other sample devices used (specify): 32-ounce jar <br /> Sample location description: This sample was collected from the control gate outlet storm water pipe at <br /> the east entrance to a storm water channel located in the facility yard; the water comes from the yard drain. <br /> The storm water pipe faces approximately westward and is located midway between the north and south <br /> facility perimeters. GPS Coordinates of sample location: longitude: -121.262035; latitude: 37.908003 (see <br /> Attachment 1, Sample Location Map). <br /> Sample Information/Field Observations: <br /> The sample was brown (dirty) water and was collected directly from the storm water at the entrance of the <br /> pipe. Clark used a 32-ounce jar to capture the water, transferred it to a one-gallon jar, and continued to do <br /> so until both TCS-01A and B one-gallon jars were full. <br /> Field Observations: water in the outlet was still and was deep enough to cover over half the pipe <br /> (approximately 6-8 inches deep). <br /> Field testing and other pertinent info: a pH strip used to measure the water showed a pH of approximately <br /> 7. <br /> Note: The gallon jar for Sample TCS-01B was broken in transit to the contract lab. Only TCS-01A was <br /> tested. <br /> Analysis for sample location: ❑ total metals ❑ soluble metals ❑ TCLP ❑ mercury ❑ Chrom 6 ❑ <br /> PCBs ❑ pH ❑ flash pt ® fish bioassay ❑ asbestos ❑ motor oil range ❑ diesel range <br /> ❑ total petroleum hydrocarbons ❑ VOCs ❑ Semivol ❑ < 100 micron size ❑ other(specify): <br /> Photos: See Attachment 4, Sampling Photographic Log, Photo #'s: 1-6 <br /> i <br /> Page 3 of 12 <br />