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■ VII. ENVIRONMENTAL DESCRIPTION (Wenck Associates) Asbestos-Containing Materials ■ Wenck reviewed the supplied documents, conducted a short tour of the plaza, and interviewed Mr. Jim Monk, facilities engineer. Based on those activities,we have prepared estimated asbestos ■ abatement costs using the Asbestos Survey Report,Apache Plaza,prepared by Braun Intertec Corporation (Braun), and dated September 20, 1994 (the Report). The Report appears to be the best source of accurate data regarding the materials existing in the plaza. Other documents available either do not address asbestos-containing materials (ACM) remaining in the plaza or pertain to ACM that has already been abated. Time requirements did not allow for preparation of an additional comprehensive survey. Accordingly, this is a conservative cost estimate prepared based on necessary assumptions. Destructive sampling techniques were not employed in the previous survey, ■ so the presence of ACM beneath sampled building materials could not be confirmed nor ruled out. Additionally, estimates of quantities of materials present were presumed to be accurate, based on the . Report prepared by Braun. Wenck made the following observations regarding the Report, site tour, and conversations with Mr. Monk: . • Boiler Rooms —Information from reports indicated there were originally eight boiler rooms. ACM was abated from these areas. Mr. Monk indicated two of the boiler rooms no longer . exist. Mr. Monk showed Wenck three existing boiler rooms. These three rooms appeared to have non-asbestos insulation on the pipes. Further investigation, which may include sampling of the material, is required to determine if the insulation in the remaining six rooms does or does not contain asbestos. Cost for sampling, analysis, and abatement is not included in the cost estimate. • The Report indicates suspect ACM was observed above ceiling panels in certain areas. The S areas noted were the lower level storage room adjacent to the maintenance room, lower level bowling alley, and Space 15C. No sampling and analysis was performed and no quantities of suspect material were noted in the Report. Cost for sampling, analysis, and abatement of this suspect material is not included in the cost estimate. . • The Report indicated there was suspect ACM observed in debris located in the lower level artist room pipe chase. No quantity was listed. Cost for sampling, analysis, and abatement of this suspect material is included in the cost estimate. • The Report indicated observation of three demolition piles in the unexcavated space directly ■ below the True Value Hardware Store Space 23D. Pile dimensions were approximately 15' x 15' x 10'with suspect pipe insulation mixed about the piles. It is assumed the insulation is friable, which means the asbestos material is intermixed throughout the debris piles. The cost for abatement of the debris piles is included in the cost estimate. • One sample analysis of 2' x 4' random fissured ceiling panels indicated the panels were asbestos containing. Numerous other random fissured panels were analyzed and were found ■ not to be asbestos containing. Normally, if one sample of identical or appears to be identical material is found to be asbestos-containing the entire quantity is considered to be asbestos- containing. Further investigation should be performed to determine if these panels are . 19