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Home My WebLink AboutDERR-2025-003110 SITE VISIT REPORT DATE: 09/10/2024 SITE: Chromalox VCP #073 SITE ADDRESS: 2150 North Rulon White Boulevard, Ogden UT 84404 PREPARED BY: Allison Stanley Utah Department of Environmental Quality Division of Environmental Response and Remediation 195 North 1950 West Salt Lake City, UT 84116 ATTENDEES: Allison Stanley Michael Ozier (Tetra Tech) ARRIVAL TIME: 2:10 PM - DEPARTURE TIME: 3:10 PM Split Samples Collected: No Is the work being performed in a manner consistent with the accepted workplan? Yes SUMMARY: This site visit was to observe groundwater sampling for the September 2024 event. When DERR arrived, Tetra Tech was working on well MW-12D. MW-12S is no longer present and may have been destroyed during the recent building expansion. Molly Wabel from Chromalox stopped by during well purging and the DERR requested for Chromalox to follow-up on the status of MW-12S. While purging MW-12D, the water quality meter was producing unusually high pH numbers. Tetra Tech believed this was a calibration error (for pH only) and made note of it in the field forms. Tetra Tech finished sampling for MW-12D and would pick sampling back up in the morning once the meter was calibrated. Tetra Tech also noted that MW-12D was the only well that day that experienced issues with the water quality meter. Tetra Tech had already purged and sampled wells MW-20, MW-10B, MW-16, MW-19, GMW-8, MW-18, and MW-17. MW-19 was previously thought to be lost but was rediscovered from the recent construction. MW-19 was not sampled during the 2023 and 1st 2024 events. Samples were collected, labeled, individually bagged, and placed on ice. Previous reports by the laboratory Chemtech Ford have reported to the MRL, rather than the MDL which is stated in the QAPP. The DERR requested that Tetra Tech make note to ask for the MDL on the COC form. PHOTO LOG: Photo 1: Location of MW-12D. Photo 2: Only one well (MW-12D) is present and MW-12S is missing. Photo 3: Taking samples at MW-12D. Photo 4: Samples are bagged and put on ice (ice is at the bottom of the cooler).