ARCHIVED REPORTS_2011 - Laserfiche WebLink

Home Browse Search

Lodi City Landfill November 16,2011 North of Awani Drive,Lodi,California Project No. 104690061 The report states that after decommissioning the winery, Jim Thorpe Oil, Inc., (JTO) was con- tracted to destroy the existing buildings and structures that remained on the property. The work reportedly began in 1987 and was completed at the end of 1988. During the removal of a 15,000-gallon concrete bunker, which reportedly contained diesel fuel and/or bunker fuel, soil contamination was discovered and there was the possibility of groundwater contamination. Soil borings and three groundwater monitoring wells were installed in March 1988. In July 1988, Ford Construction Inc. and JTO purchased the property and reportedly assumed liability for future cleanup and site closure. "In early 1989, additional spoil was removed from the site of the former concrete tank, resulting in a pit approximately 160'x 180'x 45'deep,plus access ramps & erosional gullies. It was reported that the excavation reached a maximum depth of about 45 feet bgs and breached the water table which at the time was approximately 39 feet bgs. Sloughing and erosion has refilled the pit to about 30 feet, and water no longer is visible." "Subsequent reports by WJH concluded that all contaminated soil had been removed from the site, and the groundwater had not been impacted. refer to Exhibits B&C for copies of those reports."On July 23, 1990, the San Joaquin County Environmental Health Davison stated that they agreed with WJH's assessment "...that groundwater has not been impacted and no significant contamination remains in the vadose zone."However, site closure could not be achieved until the "removed spoil" was either disposed of or satisfactorily remediated to acceptable levels. • According to the report, 'JTO decided to employ an experimental technique for remediating the approximately 8,000 cubic yards ofspoil which was stored on site. The method employed a large Pug Mill, (normally used to make dry-mix asphalt,) to thoroughly mix the bacteria with the soil prior to placement in piles for remediation. JTO contracted with Terra Environmental Services of Pine Grove CA to provide services for injecting the bacterial and monitoring the degradation of the hydrocarbons in the spoil." The following was concluded in the report: "1. Groundwater has not been impacted at this site, and all wells & borings have been destroyed under County EHD supervision. 2.All contaminate soil has been removed from the site of the former concrete bunker, and further excavation is not needed. 3. The removed spoil has been successfully remediated to levels far below those allowed to be left in place per LUFT analysis. 4. Use of the remediated soil for roadbase on the property is an acceptable& recommended use for the material."The report recommended the following: "Based upon the results of the work done on the property as detailed in this repot, it is the opin- ion of WMJ. Hunter&Associates that the removed soil has been satisfactorily remediated, and we recommend that the property be certified clean, and appropriate closure documents be is- sued." A site plan included as Plate V in the report indicates the site contained a removed 15,000-gallon underground storage tank, (concrete bunker tank), removed 500-gallon UST, a chemical storage area located between the two tanks and waste water and other ponds north of the buildings and former USTs, immediately south of the Mokelumne River. • 10469M1 R&W.&c 10 N*7 yv,*9ure