2008_1020_packet - Laserfiche WebLink

Home

WS 13 & Associates, Inc. Proposal BL-08-02387 October 9, 2008 Page 3 One original report and one copy of our report will be submitted to you and two copies to the City. At your irequest, however, additional copies can be preparied for other project team members, If you ,anticipate that additional copies will be needed, please request them prior to the report being completed and forwarded to you so that we can prepare a copy list for the recipients and broadcast the additional reports expediently. 0 Scope of Services - Preliminary Envi ron mential' Evaluation The purpose of the preliminary Environmental Evaluation is to evaluate soils within the proposed roadways to assist with planning for the management of potentially contaminated soils that may be encountered during construction. We assume that the soil borings proposed for the above referenced Igeotechnical evialuiation would be the same soil borings usled for our Environmental Evaluation. I Please note that the basis for our proposed sampling and analytical parameters are for soil contaminant ,characterization based on the history of contaminants in the vicinity of the site, and are not adequate for landfill disposal or off-site reuse of site soils. Soil Screening A Braun IIntertec environmental technician will be at the Site during the soil boring activities to monitor and log the subsurface materials encountered at each soil boring location. Soil discoloration and odors will be documente'd if detected. In addition, soil samples will be screened for the presence of organic vapors with a PID using both direct readings from each sample and the headspace method of analysis recommended in "Soil Sample Collection and Analysis Procedures," Minnesota Pollution Control Agency (IVIRCA) Petr'ioleum Remediation Program Guidance Document 4-04, Section 1. SoIl S=plinlg and Laboratory Analyses A total of up to 14 sioll samples will be collected (approximatelly one sample for every two soil borings) for laboratory chemical analyses at the Braun Intiertlec laboratory. The soil samples will be collected from the depth intier'Vials. displaying visual or olfactory indications of contamination, or the highest,field- screenied organic vapor concentration. The soil samples will be analyzed for the presence and concentrations of the following parameters.- Diesel range organics (DR ; Giasolinie-range organics (GRO); and ■ Volatile organic compounds (VOCs). The soil siamples will be transported under refrigerated con'd,itions and accompanied by Braun Intertec chain-of icustioldy relciords. All analyses will be performed within U.S. EPA holding times. Results and Report[ing Verbal results of the Environmental Evaluation will be provided to you, as they become available to us. Following re'cleipt of the analytical testing results, Braun Intertec will summarize the results of the Environmental Evaluation into a report. The following items will be included in the report: Summary of the environmental field screening results A sketich identifying the soil boring locations Soil boring logs describing stratigraphy A description of sampling metho'ds and procedures used Discussion of the soil analytical results Conclusions and recommendations.regarding our findings BRAUN INTERT C