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<br /> <br />Sarr Engineering Company <br />4700 West 77th Street . Minneapolis, MN 55435-4803 <br />Phone: 952-832-2600 . Fax: 952-832-2601 . www.barr.com <br /> <br />An EEO Employer <br /> <br />BARR <br /> <br />Minneapolis, MN . Hibbing, MN . Duluth, MN ' Ann Arbor, MI . Jefferson City, MO <br /> <br />May 9, 2008 <br /> <br />Ms. Kristine Giga <br />City of Arden Hills <br />1245 West Highway 96 <br />Arden Hills, MN 55112-5743 <br /> <br />Re: Professional Opinion, Asbestos/Hazardous Materials Surveys and Abatement Cost Estimate <br />TCAAP Transfer Property, Arden Hills, MN <br /> <br />'I.i>~:!"" <br /> <br />~~ar:MtQjga: <br /> <br />This letter summarizes the results of a review completed by Barr Engineering Co. (Barr) and Barr's <br />subcontractor, Applied Environmental Sciences, Inc. (ABS), of asbestosJhazardousmaterials survey <br />reports and a related abatement cost estimate for the buildings and former building pads located on the <br />585-acre Twin Cities Army Ammunition Plant (TCAAP) transfer property (the Transfer Property). RRLD <br />LLC (RRLD), the development group for the Transfer Property, retained two subcontractors to perform the <br />surveys for the purpose of identifying asbestos and other regulated materials that will require special <br />handling and disposal prior to demolition of the buildings in preparation for redevelopment of the Transfer <br />Property. A cost estimate for abatement of the asbestos and other regulated materials identified in the <br />surveys was prepared by a third RRLD subcontractor for RRLD's use in negotiations with the Army. <br /> <br />Barr was retained by the City of Arden Hills to provide a professional opinion regarding the adequacy of <br />the survey reports and the cost estimate. Our assistance included attending a presentation of the resuits <br />hosted by RRLD on April 29, 2008. The RRLD presentation included a summary of the sampling <br />techniques and results, the qualifications of the subcontractors and a summary of the assumptions and unit <br />prices usedto develop the abatement cost estimate.' Following the presentation, Barr and AES <br />representatives spent about three hours at RRLD's offices reviewing represen1ative sample reports from <br />each subcontractor and the cost estimate prepared by RRLD' s abatement subcontractor. A detailed review <br />of the all of the reports was not possible. Validation of the information given to Barr and ABS was also. <br />not possible. Likewise, inspection of the buildings or the collection and analysis of confmnation samples <br />were not a part of Barr's review. <br /> <br />Our review is considered adequate for the purposes of providing the opinion requested by the City. The <br />following opinions are premised on the provided information. You must keep in mind that ifthe <br />information given to Barr and AES is incorrect, then the opinions expressed in this letter will be incorrect. <br /> <br /> <br />Asbestos/Hazardous Materials Surveys <br />RRLD retained two subcontractors to perform the surveys which included assessing the buildings and <br />former building pads for the presence of asbestos, flaking lead paint, mercury containing components, <br />PCB's, and ozone depleting chemicals. RRLD selected the subcontractors from their in1emallist of pre- <br />qualified firms which they require to be licensed by the State of Minnesota. Because oftheJarge number <br />of buildings on the Transfer Property (93 separate building will require abatement), the work was broken <br /> <br />P:\Mpls\23 MN\62\2362975 TeAAP Redevelopment Envirorunental Review\FinalDeliverabJes\TCAAP Survey Eval.doc <br />