Document zoN7mEKoZre7X3mnNMY8kad7

GRACE Construction Products Division TO: H. C. Duecker H. A. Eschenbach J. W. Wolter FROM: S. Venuti cc: J. A. Danneker R. C. Ericson W. R. Hanlon R. C. Walsh DATE: July 17, 1984 SUBJECT: Vermiculite Hazard Evaluation Program Attached is the description of a Quality Assurance Program designed to monitor finished product-tremolite content and exposure levels as an aspect of product quality. The current Material Safety Data Sheets include reference to tremolite content and tremolite exposure. Compliance with the Federal Hazard Communication Standard and other state regulations, require that such statements be supported with a formal written hazard evaluation and that Material Safety Data Sheets be maintained as current. Bob Walsh agrees that this type of program Is necessary. He has asked that I circulate the details and request the comments of all concerned. SV:dm Attachments S. Venuti 10003094 Initial Phase: Correlation Study This phase will address the broad spectrum of variables which can effect both total tremolite content and release of airborne fibers. The objective will be to investigate whether there is a correlation between these factors: e Existing Quality Control Standards allow product to be shipped with a heavy particles content (according to Test Method C-31G) of up to 5% by weight. A correlation between heavy particles and tremolite content should be developed. This may require development of in-plant Q. C. procedure to differentiate total heavy particles into hydrobiotite and nonhydrobiotite fractions. Release of airborne fiber is assumed to be related to the total tremolite content of the product. A correlation should be developed for each product relating fiber exposure to total tremolite content. Protocol will be required to address the use of vermiculite-containing products in actual end-use environments. Initial phase should be completed using D-18 expanded vermiculite determined to be good quality (except for the samples with intentionally high heavy particle contents). The initial phase should also be repeated with selected Model A expanded vermiculite of marginal quality. A degree correlation between heavy particles content, total tremolite content, airborne fiber release, and vermiculite quality will be developed using all of the above data. Audit Phase: Ongoing Random Analyses This phase should be part of the total quality control program for expanded vermiculite (such as the M0N0K0TE C-11A Program). Product will be randomly selected pi ant-by-pi ant and subjected to the same type of analyses as above, i.e.: 1. Standard Quality Control Tests (VAC, Sieve Analyses). 2. Heavy Particle Determination. 3. 400X Optical ( Tremolite Fiber Analysis). 4. Airborne Fiber Exposure According to Protocol (analysis to be completed by Research or independent laboratory). This program will provide continuing support and a basis for the annual review required by OSHA and State Right-To-Know Laws. Each product will be audited at least once, but not more than three times per year. Implementation e Quality Control Tests - performed by Cambridge Q. C. Technician. Sample preparation and 400X Optical Analysis of Product - performed by Q. C. Technician; trained by J. C. Yang. 10003095  Field sampling protocol and performance - audited and approved by ICG Industrial Hygiene. Actual field sampling - by S. Venuti with some assistance from other staff under direction of S. Venuti. Field sample analysis (airborne fiber) - analyzed by J. Yang or outside certified lab. Samples will be verified by electron microscopy periodically. Cost will include travel, sample analysis, and increased staffing of a part-time (20 hrs./wk.) Grade 5 Technician. 10003096 GRACE To: S. Venuti From: F. W. Eaton Construction Products Division Date: April 10, 1984 Subject: Air Monitoring Costs Per your request of April 6, 1984, job siteair monitoring costs can only be established on a time/location basis. Equipment costs can be obtained from T. Hamilton and/or J. Yang. Cost of supplies and analysis work from J. Yang. Actual air monitoring costs include travel, meals, lodging, car rental if required and that portion of salary allocated to air monitoring. The dollar amount is dependent on location and number of jobs monitored. No job should be sampled for less than three (3) hours. As our field results (f/cc) improve and PEL decrease, sampling periods should be increased to 5-6 hours for a more accurate and representative 8 hour TWA exposure. FWE/sy 10003097 : GRACE /> r% Conttruction Product* Division TO: FROM: CC: S. Venuti J. C. Yang H. C. Duecker R. C. Ericson DATE: April 11, 1984 SUBJECT: Asbestos Analysis To follow-up our meeting on April 6, I am tabulating the time required for the specific analysis in the following: 1) Heavy Particle Determination - Our method a. Sampling - to quarter the sample from a 4 cu. ft. bag to 1000-2000 g 30 minutes b. Heavy Particle Determination IS minutes Total 45 minutes Training a person to do this analysis: 1 hour 2. Respirable Asbestos Fiber Determination a. Sampling - to quarter a 4 cu. ft. bag sample to 10 gram 1 hour b. Sample preparation - weighing and mounting *> c. Fiber Counting - 400 particle are counted 1 5 hours d. Data computation ' Total 6 hours Training a person to do this analysis: 10 hours Audit the fiber counting work: first year, every three months - 20 hours each time later, every six months - 20 hours each time If you have any questions, please let me know. JCY/ph 10003098