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HomeMy WebLinkAboutB12-0319 FINAL AIR CLEARANCE ���� 3650 Chesti�ut Place Denver,CO 80216 ������ ��� 303.296.6022/fax 303.292.1451 C'(7,LlPI.7A1Vi,F SF.RI'Ii,F.'S/.Sl"!".F(,7.F.ARF:ti(�SF.RVI�C:F.S 8/24/2012 Mr. Budd Zuckerman 6587 Lake View Drive Boulder, Colorado 80303 RE: PCM Final Air Clearance- 3807 Lupine Drive Vail, Colorado 81657 As requested, Family Environmental Compliance Services, Inc. performed a final air clearance for your asbestos abatement project at the above referenced address on August 20, 2012. Final clearance air sampling was performed following the removal of the asbestos containing material and samples were collected and analyzed by a successful AIHA participating member. Removal and disposal of the asbestos containing material was performed by American Abatement. Family Environmental Compliance Services, Inc. conducted a visual observation of the work area as well as PCM Final Air Clearance Testing. Five (5) air samples were then collected using high volume pumps. Samples were collected by drawing air through 25mm mixed cellulose ester membrane (Millipore 0.8 MCEF)filters, which were housed in three-piece cassettes, equipped with 50mm electrically-conductive extension cowls. Samples were collected with variable volume pumps. Flow rates were established and checked with a calibrated flow meter. Clearance samples were analyzed for airborne fibers by Phase Contrast Microscopy (PCM) per NIOSH Method 7400 using a positive Phase-contrast microscope equipped with a Walton-Beckett graticule (Type G-22 for'A counting rules'). A quarter-wedge was cut from each sample filter and was examined at a magnification of 400x. Fibers greater than 5 microns in length with a length-to-width (aspect) ratio equal to or greater than 3:1 were counted. Total fiber counts for each sample filter were divided by their respective sample volumes. The resulting concentrations were expressed in terms of total fibers per cubic centimeter of air (fibers/cc). Phase Contrast Microscopy (PCM) is not asbestos specific because it counts total fibers, which shows worse case situation because all fibers are counted (carpet, cloth, total fibers, which shows worse case situation because all fibers are counted (carpet, cloth, hair, paper, asbestos, etc.). Results from the area sampled during final clearance testing had fiber counts 0.01f/cc (fibers per cubic centimeter of air) or less. This is the level the EPA and the State of Colorado Air Quality Control Commission requires all samples to be equal to, or less than, prior to releasing an area to the public. Based on visual observations; documentation review; and air sample results, it is the opinion of Family Environmental Compliance Services, Inc. that the air quality within your work area was in compliance with regulatory and industry standards at the time of this sampling. A copy of the PCM Final Air Clearance sheet is attached. Should you have any questions concerning this project, please do not hesitate to contact our office at (303) 296-6022. Sincerely, ��/ F j ��� ��� ���.} �3 CO Cert# 17817 Family Environmental Compliance Services 3650 Chestnut PI. Denver CO. 80216 i �� � � � � � � � \� � � � � � � � � � ; -� � � °° .t`�, � �� �� � .� � � � o .� �� , ^ 9� 5� � � � � �. V � � � � � � �� �� : � � � � � "� � � ` ` i - � � ,�,� �`'� � � � " � � � � C � � � � � � � � ' � � s� , � � � � � ; , °� L • ���� � ��.. ,. � � � � ., ,� � ""� ..� �` e (� � „� ,� � �. �l �� i . , � '� � � °a� N y '� W � p � � Z � .. - '� F� . � � V ° � � :�. � ,F., � � Q � � � �� � � � � � -� o � - � r �a �- � - � �, �, �,�, � • � m ,�� � � �..a ,��'[�' . � q "' �� �"�?"��� yy ea3 �� � � � � .. � r°°° � . . � � 1 � /1 •L . . � . ._ � e� � o � , �. � . � -� ' � � �� � � � �' � � . : . � a . . . . 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