DERR-2025-004760

SITE VISIT REPORT
DATE: 05/30/2025
SITE: The Paxton VCP
SITE ADDRESS: 215 Paxton Avenue, Salt Lake City
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 (DERR), Kendra Caskey (Geosyntec), Brent Robinson
(Geosyntec)
ARRIVAL TIME - DEPARTURE TIME: 0810 – 0900, 1355 - 1425
Split Samples Collected: No
Is the work being performed in a manner consistent with the accepted workplan? Yes

SUMMARY:
DERR personnel were on-site with Geosyntec to oversee additional shallow soil removal and the
application of the Oxygen Reduction Compound (ORC). Two areas (near B-1 and B-5/7) had
confirmation samples that exceeded cleanup levels after the initial excavation. Today's work
involved removing an additional 1-2 feet at the base and approximately another foot near the fence
line. Confirmation samples were collected from the base and sidewall samples that had previously
exceeded. Dust control practices, such as soil wetting and minimizing trackout, were observed.
Later in the afternoon, DERR observed the application of the ORC compound into two existing
excavations (near GP-4 and GP-5) to address petroleum impacts to groundwater identified during
site characterization. The process involved collecting groundwater from the GP-4 hole using an
excavator bucket, pouring two 40-pound bags of ORC, and then mixing the ORC directly with the
groundwater in the hole using the bucket. The same process was used at the GP-5 excavation, with
a total of four bags of ORC used. All activities adhered to the RAP.
PHOTO LOG:

Photo 1: Soil wetting to reduce dust during excavation.

Photo 2: Area near B-1 and SW-1 where additional excavation and confirmation samples is
required.

Photo 3: Tarp covered trucks.

Photo 4: Two bags of Oxygen Reduction Compound (ORC) applied to each hole.

Photo 5: ORC application into the bucket.

Photo 6: ORC mixed in with groundwater in the excavation.