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City of Ramsey Project B1610732 January 10, 2017 Page 14 The 1994 Phase I report also indicated that a water well was located near the southwest corner of the auto dealership building and a domestic septic system was located near the northeast corner of the auto dealership building (on the Site). A 1994 Phase II Environmental Assessment discussed the results of investigations conducted to assess areas of concern identified in the 1994 Phase I ESA including a former gasoline UST basin (located on the Site near Sunfish Lake Boulevard), two former gasoline dispensing islands (located on the Site near the southeast corner of the former auto dealership building), a motor oil UST basin (located on the Site in the northeastern portion of the former auto dealership building), and two drainfields connected to sand traps located in the building (the east sand trap and drainfield were located on the Site). Groundwater was encountered at depths ranging from 20 to 22 feet below ground surface. Soil and groundwater contamination (GRO and BTEX) was encountered in the area of the former dispensing island to the south of the auto dealership building (located on the Site). One soil sample collected from the area of the motor oil UST (located on the Site) had no detectable concentrations of petroleum compounds (this was the hand auger sample previously discussed in Leak #7134). No soil or groundwater contamination (GRO or BTEX) was identified near the east dispensing island or along the eastern edge of the larger property near the location of the two former gasoline USTs (both areas located on the Site). No soil contamination (VOCs, RCRA metals or DRO) was identified near the east drainfield (located on the Site). Soil and groundwater contamination (VOCs including trichloroethene and tetrachloroethene, RCRA metals and/or DRO) was encountered in the area near the west drainfield (located just west of the Site). Further assessment was recommended in the areas of the former dispensing island to the south of the former auto dealership building and in the area of the west drainfield. Approximately 400 cubic yards of petroleum impacted soil was excavated from the location of the former south dispensing island on July 19, 1994. The soil was landfarmed on the adjoining property to the north across the railroad tracks. The excavation appeared to be effective in removing all petroleum impacted soil above the water table in the area. Four groundwater monitoring wells were installed in the area of the former south dispensing island. The wells were sampled in November 1994 and March 1995. Low levels of PVOCs were detected in three of the wells during the November 1994 sampling event at concentrations below their Health Risk Limits (HRLs). Samples were analyzed for GRO and BTEX during the March 1995 sampling event. All compounds were less than the laboratory reporting limit with the exception of a low detection of xylene in one well. The petroleum release (Leak #7205) was closed on September 26, 1995. A work plan was prepared to address excavation of the west drainfield and all impacted soil along with the installation of four additional groundwater monitoring wells. The work plan was approved by the MPCA in a letter dated August 3, 1994. Excavation of the west drainfield area occurred in September 1994. Approximately 350 cubic yards of contaminated soil was removed and was thin spread on the adjacent property to the north across the railroad tracks with the approval of the MPCA. Contamination BRAUN INTERTEC