No. 2699 approving/authorizing the execution of an addendum to the Master Agency Agreement (Phase II Environmental Site Assessment at Former South Bend Lathe & Huckins Sites)

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Ms. Ann Kolata June 15, 2010 SB1060.400.0001 Page 3 VOCs using Indiana Modified Method 50351; Soil Samalina Procedures Soil sampling will be conducted using a direct -push unit. Hull's field representative will screen samples using a photoionization detector (PID). The driller will be required to decontaminate all down -hole equipment between sampling depths using a non - phosphatic detergent (e.g., Liquinox) and rinsing with distilled water. Soil samples will be selected based on Hull's field observations. In general, those samples exhibiting the highest PID readings or other evidence of impact will be selected for chemical analysis. In addition, a second (deeper) soil sample may be selected and submitted to the laboratory to evaluate the vertical extent of contamination. If samples in a given boring exhibit little variation in the degree of apparent contamination, Hull's field representative may preferentially select the surface sample (i.e. 0 to 2 ft. bgs) for analysis. Unused samples will be placed in a Department of Transportation- approved 55- gallon drum. The driller will decommission the borings by filling the boreholes with bentonite chips. Task 3 Letter Report Preparation Upon receiving analytical data from the laboratory, Hull will prepare a brief summary report to document field activities and findings of the Phase II evaluation. The report will include the following: 1. a narrative describing the Site, including a summary of work completed; 2. a summary of data collection activities and rationale for sampling locations and frequencies; 3. a comparison of chemical analytical data to VRP standards; 4. a description of the physical and chemical characteristics of the subsurface materials encountered; 5. a bibliography of references; 6. other supporting information that present data and /or conclusions (e.g., drilling logs, tables, etc.); and 7. recommendations for further activities. Upon completion of the Initial Phase II investigation activities one draft copy of the report will be submitted. Three copies of the final report will be prepared upon approval of the City. 1 Although VOCs have not been detected at concentrations exceeding VRP Tier II Nonresidential Cleanup Goals at these locations, they have been detected in these areas at lower concentrations; samples will only be submitted for VOC analyses if evidence of VOC impacts (e.g., elevated PID readings) is observed during soil boring installation.