2019-12-05_HYDROLOGY - M1999058 (4)

Home Browse Search

t r,r ri r/i/ i 101 Figure 10. Water tank placement to receive pumped sump water. Photo captured Thursday, November 14, 2019; view to the south-southeast. On Wednesday, October 23, GLA and CSQ personnel prepared a Job Safety Agreement (JSA) to be understood and signed by every party participating in the clean-up activity. Following the adoption of the JSA, the initial pump supplied by United was unable to pump at the required pressure over the required elevation change. Arrangements were made for replacement pumps to be delivered by Rain for Rent based out of Rifle, Colorado. Also on Wednesday, CSQ and GLA concluded that Clean Harbors would not be able to manage and complete the mitigation operation as planned. Therefore, additional consultants were contacted and HRL Compliance Solutions, Inc. (HRL) conducted a site visit to assess its ability to complete the job. Following this initial site visit, HRL was chosen to assist with mitigation activities and to take over the long term sampling and remediation plan required by the state. Two holes were dug near the generator Conex to determine potential pathways for diesel to enter and potentially saturate the fill near the generators (Figure 11). One hole was located at the center of the northern face and a second adjacent to the western Conex face. Both holes were within 10 feet of the generator Conex. The western hole yielded diesel soaked soil to a depth of 2.5-3 feet and was observed via smell and mild staining. The northern hole yielded diesel soaked soil to a depth of 2.5-3 feet with less distinct, but still detectable, diesel odor at a depth of approximately 12 feet below the pad surface. It was determined due to the mild presence of diesel odor at depth that the northern hole would serve as the input location for water flushing, simple green injection, and final seasonal fill remediation of a Micro-Blaze application. 17