Document 1gzJx8KnO5OBmaKmaGZkvda8m

PLAINTIFF'S EXHIBIT VSG-1498 ASSESSMENT OF EXPOSURE POTENTIAL from ASBESTOS-CONTAINING MATERIALS Essential Assessment Factors How to Document Assessments EPA's Recommended Algorithm A Corrective Action Scale A Format for Assessment Reports This handout has been prepared as an informal training aid by the Regional Asbestos Coordinator, Environmental Protection Agency, Region IV, Atlanta, Georgia 30365 (404) 881-3864 January 1981 CS014 2417 AN EXPOSURE ASSESSMENT GUIDE An Exposure Algorithm with Assessmen t Descriptors* "Exposure assessment" is a process to be undertaken once asbestos-containing materials have been found in a building. The process is undertaken by building owners and managers, normally with the assistance of architects and engineers, to consider corrective or control measures. Control measures are normally considered on the basis of "sampling areas" wherein analytical results have confirmed the presence of asbestos. See Table I. The assessment process is begun by using an exposure algorithm. An algorithm is a guide for comparative decision-making. Those factors to be considered in assessing potential exposure to respirable asbestos fibers are given a scale or range of values. The selection of a scale number - the one most applicable to a given situation - is made by using factor descriptors. See Table II. Judgment is required in selecting the most applicable descriptor scale numbers. Consistency in judgment is essential, in that this algorithm is a highly subjective one. By using the same algorithm format, different buildings, and different rooms within a building, can be compared and prioritized according to greatest exposure potential. Extensive use of photography should accompany the assessment process, to develop a visual record of the factors under judgment. The degree of exposure potential can indicate varying require ments for abatement and control measures to be taken at the building owner's expense. The exposure potential is indicated by the statistical results of the algorithm. Suggested abatement and control measures are equated to the range of results available. See Table III. *See 34 CFR Parts 230 and 231 Also 40 CFR Part 763 C5014 2418 ESSENTIAL ELEMENTS OF INFORMATION - ASSESSMENT FACTORS - The vital elements of concern when conducting an assessment of asbestos exposure potential are outlined below. These elements and their relationship within an algorithm were defined by Dr. Robert Sawyer, a medical doctor teaching at Yaie University. Dr. Sawyer has put an extensive amount of time into development of this algorithm. Its value will become more evident to theassessor when a large number of buildings with suspect material have been evaluated. Only through the experience of looking at and touching a large number of suspect materials with variations in their several factors can one develop confidence in use of this algorithm. The friability factor is the most difficult one to appreciate. Become aware of the fact that neither asbestos content nor friability, in and of themselves, constitutes an exposure problem. Time must pass, wherein the several operational factors listed below can bring about a respirable asbestos fiber problem. The qualitative factors described below have a far greater impact on the results of the algorithm calculations, Figure 1 displays the numerical method, showing a certain set of weigr.ts or values for each of the eighc assessment factors. OPERATIONAL FACTORS CONDITION OF MATERIAL Material condition may indicate the possibility of contami nation (i.e., fibers released to the area) and the potential of future contamination. It is a combination of the quality of the installation, adhesion of the material to the under lying substrate, deterioration and damage. WATER DAMAGE Water can dislodge, delaminate, and disturb friable asbestoscontaining materials that are otherwise in good condition. Water can carry fibers as a slurry to other areas where evaporation will leave a collection of fibers that can become reentrained in the air. Water damage will have a significant effect or. selection of a corrective method, i.e., it may eliminate certain types of sealants. continued -2- CS014 2419 OPERATIONAL FACTORS (continued) EXPOSED SURFACE AREA The exposed.surface area of friable material has an effect on potential fiber fallout levels and the possibility for contact and damage. A useful criterion is whether the friable material is visible. ACCESSIBILITY If the material can be reached, it is accessible and subject to accidental or intentional contact and damage. Accessibility is an indicator of possible future exposure caused by contact or damage. ACTIVITY AND MOVEMENT This factor combines the effects of general causes that may result in contact and damage to friable material. These causes include air movement, building vibration from machinery or any other source, and activity levels of students or building workers. This factor is also an indication of future exposure potential. AIR PLENUM OR DIRECT AIR STREAM Friable asbestos-containing material within an air plenum or in an air stream, if undisturbed, has very low potential of contaminating the building's environment. However, it must be considered since contact or damage may occur during maintenance, repairs, renovations, or if the air stream is very turbulent. QUALITATIVE FACTORS FRIABILITY The term friable is applied to material that can be crumbled, pulverized, or reduced to powder in the hand. In order to score the material in question, it must be touched. The asbestoscontaining material can vary in degree of friability. The more_ friable the material, the greater the potential for asbestos fiber release and contamination. Sprayed asbestos material is generally more friable than most trowelled materials. ASBESTOS CONTENT The percentage for all types of asbestos present should be added for the total asbestos content. With a high percentage of asbestos, there are more fibers that can be released and contaminate the building environment. -3- n > r*o pj c Assessment of Friable Asbestos-Containing Materials Exposure Factor Range or Extent* 1. Material Condition (Deterioration/ Damage) None Moderate; small areas 2. Water Damage Widespread;severe; pieces dislodged None Minor I Exposed Surface Area Moderate to Major Mot exposed. Located above suspended ceiling. None visible without removing panels or ceiling sections 10ji or less area exposed 4. Accessibility 10H to 100n area exposed Not accessible Low: rarely accessible 5.Activity and Movement Moderate to high; Access may be frequent None or low; Libraries and most classrooms Moderate: some classrooms, and corridors sir -v / f I -i /pi High: some corridors and cafeterias, all gymnasiums * More elaborate descr iptors are provided in the example Asbestos Exposure Assessment Guide that follows in this document. Score 0 2 5 0 1 Exposure Factor RanRe or Extent* Score 6. Air Plenum or Direc t Air St ream 7. Friability 8 Asbestos Content (total X present) None Present Low friability. Difficult but possible to damage by hand. Moderate friability. Fairly easy to dislodge and crush Highly friable. Fluffy, spongy, pieces hanging Trace to 17. flaking, 17. to 507. 50Z to 1007. ALCORITri CALCULATIONS FACTORS . COHO IT!OH 2- WATER DAMAGE J. EXPOSED SURFACE ACCESSIBILITY S. Acrmn/MOvfMENT 6. AIR PLENUH/AIR STREAM SCORES (0,2.5) (0.1.2) (0.1.) (0.1.4) (0,1.2) (0.11 XV'- i i*it i 11 l_fl_cnmtar l 1,2.1) 10.7.11 EXPOSURE NUMBER * DOCUMENTING EXPOSURE ASSESSMENTS Table IV may be reproduced and used as a package for documenting assessments of asbestos-containing materials that are sprayed-on or trowelled-on to interior surfaces in buildings. A sample of completed front page of this docu ment is shown below. The last two pages of this assessment guide contain in formation that can be of value in architectural and engineering de cisions concern ing corrective measures. Use of these pages in early survey steps can save a good deal of time and resources. Ibis information can be used,often, to further substan tiate needs for specific control measures. Use of photography in this documenmentation process can be of tremenmendous value for several profes sional purposes. One can serve best interests by using photography in an ticipation of pos sible litigation many years hence forth. SAMPLING AAEA CODE cw lx.? t asbestos exposure assessment :u:de Provide in the above space a small scale snecch of the ouilding ;o show cne location cf all sampling areas, and tneir identifying codes, considered ir. this assessment project. The sketch should clearly highlight the specific sampling area described ir. the following cages CSO 14 24 -5- pj pj TABLE I - Examples in Use of the Algorithm Proper use of the asbestos exposure algorithm requires training. Otherwise, results will vary greatly. Examples provided below serve only to orient- the reader to the algorithm's purpose. Training in use of this algorithm is essential to obtaining valid results. When proper quality assurance procedures, have been followed in the collection of bulk samples, specific "sampling areas" will have been established. A "sampling area" is designated on the basis of material characteristics and the dates of asbestos installation. This is a fairly arbitrary designation, one in which good judgment suggests creation of additional sampling areas if there is any doubt at all about the content of suspect materials . - If, for example, two parts of a building were built ten years apart, then the possibility could exist that the material characteristics in the two parts could be significantly different, and could war rant separate sampling and analysis. It is important to know the chemical contents of any suspect mixture, for this knowledge can suggest which sealants might be appropriate for encapsulating the mixture. The general condition or characteristics of the suspect material can often vary so drastically from room to room, depending on a variety of environmental factors, and separate sampling area designations could be warranted. In these cases, the variations in conditions might suggest variation in mixtures that might warrant additional sampling. The cost of sampling and analyses is cheap compared to the expense of unnecessary corrective work. We know one school that removed $600,000.00 worth of cellulose simply because of insufficient analysis. In that case, adequate analyses could have been obtained for about $60.00. Exposure assessments should be made for each building or for dis crete areas of large buildings. The result of a number of assessments will be a priority list of problems. The priority is based on the relative potential of respirable asbestos fibers being created in the various sampling areas. This algorithm result does not, in any way, measure specific health risk to a building occupant. The exposure number of a sampling area is also designed to lead architects and engineers toward a proper course of corrective action for buildings (or parts of a building) represented by the sampling areas. The algorithm is an aid to good judgment only. Specific decisions on corrective measures are the traditional prerogative of profes sional architects and engineers. The corrective action scale for the algorithm's use is contained in Table III. This scale is an excellent communications device, provided it is not used to an extreme. The following examples of algorithm use come from actual school situations. The descriptions are followed by a summary of the specific corrective measures taken. C5014 2423 -6- EXAMPLE A This is an urban school gymnasium, All overhead surfaces, beams and ceiling were open and covered with moderately friable asbestos, 70% chrysotile. The ceiling was approximately 24 feet high, had minor water damage, and some scattered areas of damage from balls and other objects. The gym had a scale number of 78. Upon recognition of the problem, the gymnasium was closed. Following negotiations with a contractor, the asbestos was removed. Accoustical tile was used as replacement. EXAMPLE B This is an elementary school corridor with a 12 foot high structural overhead and a 10 foot high hung open grid ceiling. Behind the grid system are electrical lines, heating and ventilation ducts, plumbing lines, and lights. The material is 20% chrysotole asbestos and is highly friable. All overhead surfaces, ducts, and louvers within the grid system are coated. Fallen fiber has been analyzed and it contains asbestos fibers. The grid is rarely disturbed and entry for maintenance is rare. This corridor's exposure number was 48. The school's operation continued for 5 months until the summer vacation period. Wet cleaning methods were utilized during the remainder of the year. Removal was not the corrective action used because of the complex surface area involved. The grids were removed and the framework was resurfaced and used to support a taped sheetrock ceiling (a barrier). A control system to prevent inadvertent entry (through the barrier) was initiated. EXAMPLE C This is a high school auditorium ceiling of 20-307, asbestos that has low friability. The forward area is very high and essentially undamaged. The forward section of auditorium has a scale number of 10. Deferring action was considered, but the final decision was to encapsulate with a penetrating sealant to stop fiber fallout , but retain some accoustical qualities. EXAMPLE D This is the same auditorium as above. The rear of the structure is 8 feet above the floor and it is damaged heavily by student activity. This section of the auditorium has an exposure number of 26. Because of the evident damage, the potential for con tinuing damage and exposure, and the space limitations, removal was selected. A relatively hard surface accoustical tile was used as replacement. -7- CS014 2424 EXAMPLE E This is a high school corridor, approximately 12 feet high with exposed, highly friable material (30% chrysotile asbestos content). The material is severely damaged by student activity, renovation, and water. The asbestos appears to be delaminating in some areas. Custodians report that fiber is found daily on the floor. Ventila tion and heating duct air flow is directly onto the friable material. The exposure number totaled to 96. In what was obviously a high potential situation, corrective action was deferred for some time. Upon reconsideration of the facts, removal was carried out. EXAMPLE F This is a classroom area in a middle school having 10-15%, chrysotile asbestos on steel beams behind an intact hung ceiling system. The material is moderately friable and in excellent condition. The hung ceiling system is intace and entered occationally (estimated as less than 5%, of the time). The classroom area's exposure number was 5. Action was deferred. A surveillance system of inspections on a six month schedule had begun, the custodians sign-in log book (a check-point for all building work) carries an asbestos caution stamp on every page, and a procedure has been instituted for checking all work orders for that school. Although the scale number is low, spraying with a penetrating sealant is being considered. EXAMPLE G This is a machinery space/custodian office in a suburban middle school. A mixture of amosite and chrysotile asbestos, totalling 30%, has been sprayed over a complex of overhead beams and lines. No students enter the area, activity is low, and the material is in good con dition and highly friable; The custodian space has an exposure number of 30. The overhead surfaces were encapsulated with a sprayapplied bridging sealant. Removal was eliminated as an option because of the complexity of the surface, and enclosure was ruled out due to the necessity for access. Numerical calculations for the above examples are shown in Figure 1-1. -8 - C5014 2425 Figure 1-1 ALGORITHMS FOR EXAMPLES A-G Factors I. Conditions/damage 2. Water damage 3. Exposure 4. Accessibility 5. Activity/movement School situation exa.mples AB CD EF G 22 05 500 1 0 0 0 1 n1 0 44 4440 4 3 103311 3 1 11 200 6. Plenum/airstream SUM 00 00 I00 13 8 5 13 16 2 5 7. Asbestos content 8. Friability PRODUCT: 3 L0. 2 L 0 c. 2 2 23 11323 66 22646 Scale number: (Sum x Product) 78 48 10 26 96 8 30 C5014 2426 -9- Federal RegUter / Vol. 45. No. 182 / Wedneaday. September 17, 1980 / Proposed Rules 61961 Com** acton Tab* ofBxpoeure Number X. MMffll ContftOR No damage or detertorsflon (0) Moderate damaga or datartorsflon (2) Sever* damage or detorioreflon (S) 2. Water Damage: No warn damage (0) Minor vaflr Mmag* (i) Moderate to motor weter damage (2) 3. Cannaod Mm A*a* - No mmm b mom (0) (0 peroerft more or Moo to oooia (U Mo* tian to peroant aigoeec (4) 4. Apwooetea00to0f0ll0y1: Mo fo - Aarety ooooooibli (1) T0tHfcla (4) ft. ActMty and Movement Udto or no OCtMty (0) M Ooo*ntogoo' (1) The potential lor exposure may In crease. (2) A management mnm to moulted. Precauflone ora neewary to prevent damage dung mmrtenence or rotv oveflon. ^ * Ol H to nareeamy to have eonnuouo toepecoon and reevuuatton. (c) Whan Appropriate Whan thara to mglgt)P axpoouro p^ tonttal. (d) Whan noppropnotr (1) Whan thara to deftrbe or guMtxxv aPW oaepoaura potanoai. (2) Whan oonflnuing mapaeflon la doubt* M. GneapoMoflorv (J Advantage* (tj It oonboto Obar raNaoa. (2) n lo a rapid and economical method. (b) Pbedrantiger (it Tha aouroa of fw aobaotoo ramaina m tha buMng. (2) V tha mooartat lo damapad or data* rtoraang, tha adtottonb weight of tha ft. A* Planum: No ptarwn or d*ecl Mr abeam (0) Nerve or 4raet ar atraom (1) CAdd tha oooreo of Factor* 1 through ft) Modaraao MaMty f2) ft. AaPaatoa Content 0 lo 1 percent (0) Mora Vwn 1 percent up to 60 paroant (2) Mora tian ftO pareant (3) Product [MuftMy the aoora of Factor 7 toy n acora or Factor ft) Ejgoara Nurtoer (Muttlpry Vie Sum by toe Product) Table III. Corrective Action Scale The Corrective Action Scale provide* guidance for the choice of appropriate corrective action baaed on the Exposure Number determined from Table 0. While In moat case* the Exposure Number wlU Indicate the moot appropriate corrective action, not all ponlbUitia* can be predicted with the algorithm. In those situation* in which there ia tome overlap In the Expoiure Number Range* or in which one of the eight factor* described In Table I he* an overriding effect of fiber release ( "Using the Algorithm; Step 3"), the choice of appropriate corrective action should be baaed on the considerations listed for each applicable range. Comcthe orton Deferred teflon: <t) Advantage: Thor# It no mmaOtla coot ooaoaMM wen deferred acton. 0-12 mg axtaca, P) A managamara ayetam la required Arecaifflona ora nacaaaary to prevent damage during mamtananoa or ranOvtOOn. (4) Reouirea oonflnumg mapaeflon and mamtananoa lor damaga or daiartoraflon to wicjpeutotod auleoe <i.e.. fejtvra potent!*' for flbar release lo potato*#). (5) Ercapaulotad malarial b vary etit to remove H removal bacoma* naoaoaary (tor toetanoe, afan tha toUkMg la ertntyy demolished). Whan oppropdoie (1) Whan removal b not laaefele. (2) Whan tha matanal b of low inability (3) Whan Via mstortaJ atJJ rattona bond ing rnagrey. (4) Whan damaga to tha material b not (5) When eeoeeeMty to material b (T> 1 are^economic < (1) When removal b teeafeto (*) When via matanal * highly fnebto. (S) Whan tha matanal tom not adhere wen to Via eubetrab Tha waight of tha niint may oauaa fttoher damaga or Mura. (4) whan tha matanal to datenoral* ig or damaged. (5) Whan damaga to tha matanal b (ft) toman amtar damaga or tha potential tor water damage b evident (7) Whan mare b Ngn acoetstotfty. (ft) When oonflnumg napaetton and maabananoa of ancapautetad material art doutoduL Enetoatvet (a) Advantagaoe (1) ocwtoeb flbar retoaaa (2) It may be mo moot rapto. economy caL end unoomptcated method. (to) Obedvwbegev (1) The tom of the eabeetoe remaina in tha txbdtog. (2) Ftoar faflout oonanuaa behind tha Corrective teflon ExOOSuf* nine#' range anctoeure. P) It may tot eotdy 4 aneloaura dtstutb tuneflona of other ayttema (eg., erv ctoeure may requra Ighijng chengaa) (4) A menegemant vyitam b reomrad. Pracauflona art nacaaaary lor amry into anctoeure for maintenance or renovation. (5) Continuing Intpecflon and mamia- nanoa of damaga to anctosura WWarVi are required. (c) WAien oppropriato. (1) bmen removal b not laawbb. (2) Whan dbtorbanca or anry into n< doted area no) Ibafy. (d) Whan naporophttr 0) Whan removal b Naatota. (2) Whan damaged or oatartorauig matonal eauaaa a hgh level o< fiber fanout. (3) When water .damage to ancioKim it ifcafy. (4) Whan entry mto anctoeure t Me<y for repair* and mamtenanca. ftomoveF (a) Advantage*(1) It aNrranata* tha *ourpa of tha aa* baatoa (2) * and* tha aMoa^e and pradooea me dwmtopmanT d lutura problems. IM Dbedmntogee: (1) H to gaueSy the moat ooafly. compuoatad, and flma<onawnvig method. (2) ftoptacamanl of the removed rnawnat wtfli aubeotute matanal may be naoaaaary. (9) There b a Ngher potenflel for axooaura of worker* to aabeatoa hazards. (c) When eppropnete: (1) When there b high aapoaura (2) When the matonal b dttanorumg. highfy eooeaatob, or hat aavare water demege. (3) When open material aurtacaa exiu. (d) When tnapproprlatr (1) When removal n not feaaihia bacauae of iha tocaaon of me motanal and me land of aurtaoe to wtach me materiel haa been appaad {a.g., re moval of material from comp** aufaoaa auch at pee* In*#, and aucta may bo rtffta*). Summery () it the Expoeur# Number 0-`2, dperred teflon m ueuafty appropnata (b) If Via Eitooaura Number a aoproiometety 40 or more, removal uauafty the beat corrective eeflon. (O n Vie Expoaue fbanber b id-50 and flare b aavare water demege or Ngh *' 40- (d) M tha Sxpoaue Number b 10-60 and flit water damage and arraaatowty fac tor* are tow, venoue factor*'-auch aa toed. The three oomecbva aeflone (maaha CS014 2427 -10- Table IV SAMPLING AREA CODE Exp . # ASBESTOS EXPOSURE ASSESSMENT GUIDE Provide in the above space a small scale sketch of the building to show the location of all sampling areas, and their identifying codes, considered in this assessment project. The sketch should clearly highlight the specific sampling area described in the following pages. -11- CSO 14 2 4 2 8 FACTOR ONE. CONDITION OF MATERIAL Material condition may indicate the possibility of contamination (i.e., fibers released to the area) and the potential of future contamination. It is a combination of the quality of the installa tion, adhesion of the material to the underlying substrate, deterioration and damage. This factor is comprised of three levels: 0 - NO DAMAGE: Material is intact and shows no signs of . deterioration. 2 - MODERATE DAMAGE: Through visual inspection and physical contact there are indications that the material is breaking up into layers or beginning to fall. There may be small areas where the material is deteriorating. There may be signs of accidental or intentional damage. 5 - SEVERE DAMAGE: The material is non-cohesive. Pieces are dislodged and debris in the area is evident. Parts of the material may be suspended from the ceilings or fallen to the floor. Inspect for severe accidental or intentional damage. Sampling Area Code Material Condition Factor Score (0, 2, or 5) Describe the specific characteristics of the material condition in this sampling area: Attach photographs here that depict the above material conditions. Label photographs by locations. C5014 -12- p4aj PJ O FACTOR TWO. WATER DAMAGE Water can dislodge, delaminate, and disturb friable asbestoscontaining materials that are otherwise in good condition. Water can carry fibers as a slurry to other areas where evaporation will leave a collection of fibers that can become reentrained in the air. Water damage will have a significant effect on selection of a corrective method, i.e., it may eliminate certain types of sealants. This factor is comprised of three levels: 0 - NO WATER DAMAGE: No water stains or evidence of the material being disturbed by water. No stains on the floor or walls to indicate past water damage. 1 - MINOR WATER DAMAGE: Small areas of the material or adjacent floor and/or walls show water stains and ceiling material ' may be slightly buckled. However, pieces have not fallen from the ceiling and the damage affects 10 percent or less of the material. 2 - MODERATE TO MAJOR WATER DAMAGE: Water has dislodged some of the material and caused the material to break away, or has become saturated and has the potential to fall, and/or greater than 107o of the material has been affected. Attach photographs here that depict water damage or the lack thereof in the sampling area. Label photographs by locations. Sampling Area Code Water Damage Factor Score (0, 1, or 2) Describe the specific water damage circumstances in this sampling area: -13- CS014 2430 FACTOR THREE: EXPOSED SURFACE AREA (0,1,A) Attach photographs here that depict the exposed surface area. Label the photographs by locations. The exposed surface area of friable material has an effect on potential fiber fallout levels and the possibility for contact and damage. A useful criterion is whether the friable material is visible. Asbestos material above a suspended ceiling is not considered exposed unless: (1) the ceiling panels are removed for regular maintenance, (2) it is damaged due to vandalism, or (3) the space above the ceiling comprises an air plenum. Areas with louvers, grids, or other open ceiling systems should be considered exposed. This factor is comprised of three levels: 0 - MATERIAL NOT EXPOSED 1 - TEN PERCENT OR LESS OF THE MATERIAL IS EXPOSED 4 - GREATER THAN TEN PERCENT OF THE MATERIAL IS EXPOSED Sampling Area Code Exposed Surface Area Score (0,1,4) o Describe the specific characteristics of the exposed surface area: -14- CS014 2431 FACTOR FOUR: ACCESSIBILITY If the material can be reached, it is accessible and subject to acci dental or intentional contact and damage. Accessibility is an indicator of possible future exposure caused by contact or damage. The proximity of the friable material to heating, ventilation, light ing, and plumbing systems requiring maintenance or repair indicates accessibility. Also, the behavior of the student population should be considered in evaluating accessibility. For example, students involved in sport activities may accidently cause damage to the material on the walls and ceilings of gymnasiums. Material that is easily accessible is also subject to damage by vandalism. This factor is comprised of three levels: 0 - NOT ACCESSIBLE. The material is located above a suspended ceiling or is concealed by ducts or piping. The building occupants cannot contact the material. 1 - RARELY ACCESSIBLE: The material is contacted only during abnormal activity such as infrequent maintenance or repair. Building occupants rarely touch the material or throw objects against it. 4 - ACCESSIBLE: Material is contacted frequently due to routine maintenance. The building occupants can contact the material during normal activity. During this activity occupants could touch and dislodge the material or throw objects against it. Sampling Area Code Accessibility Factor Score (0,1,4) Describe the specific accessibility characteristics in sampling area: Attach photographs that depict the accessibility characteristics. Label photographs by locations. -15- CS014 2432 FACTOR FIVE: ACTIVITY AND MOVEMENT This factor combines the effects of general causes that may result in contact and damage to friable material. These causes include air movement, building vibration from machinery or any other source, and activity levels of students or building workers. This factor is also an indication of future exposure potential. This factor is comprised of three levels: 0 - NONE OR LOW ACTIVITY: This level would normally include such areas as administrative offices, libraries, and those class rooms where the population is quiet and non-destructive. 1 - MODERATE ACTIVITY: This level describes cafeterias, corridors, classrooms or other areas where activities exist that could create undue vibration. This vibration could result in fibers being released from the material to the immediate area. 2 - HIGH ACTIVITY LEVEL: This level may be found in cafeterias ' and corridors whose occupants are vandalous or disruptive in their activities. This also includes all gymnasiums and rooms containing machinery. Attach photographs here that depict the typical kinds of activity and movement in this sampling area. Label photographs by location. Sampling Area Code Activity and Movement Factor Score (0,1,2) Describe the specific kinds of activity and movements that occur in this sampling area: -16- CS014 2433 FACTOR SIX: AIR PLENUM OR DIRECT AIR STREAM Attach photographs here that depict the circumstances of an air plenum or direct air stream. Label photographs by location. Friable asbestos-containing material within an air plenum or in an air stream, if undisturbed, has very low potential of contaminating the building's environment. However, it must be considered since contact or damage may occur during maintenance, repairs, renovations or if the air stream is very turbulent. This factor is comprised of two levels: 0 - NO AIR PLENUM OR DIRECT AIR STREAM PRESENT 1 - AIR PLENUM OR DIRECT AIR STREAM PRESENT CZDSampling Area Code Air Plenum or Direct Air Stream Factor Score (0,1) Describe the specific characteristics of this sampling area's air handling systems: -17- COO 14 2 4 3 4 4 FACTOR SEVEN: FRIABILITY The term friable is applied to material that can be crumbled, pul verized, or reduced to powder in the hand. In order to score the material in question it must be touched. The material can vary in degree of friability. The more friable the material, the greater the potential for asbestos fiber release and contamination. Sprayed asbestos material is generally more friable than most trowelled materials. This factor is comprised of three levels: 1 - LOW FRIABILITY: Material that is difficult yet possible to damage by hand. 2 - MODERATE FRIABILITY: Fairly easy to dislodge and crush or pulverize. Material may be removed in small or large pieces. 3 - HIGH FRIABILITY: The material is fluffy, spongy, or flaking and may have pieces hanging down. Sampling Area Code Friability Factor Score(ii2,3) Describe the sampling area's material's friability characteristics: Attach photographs here that might depict friability of the material. Label the photographs by location. -18- o CO o p-bj u CP t FACTOR EIGHT: ASBESTOS CONTENT The percentage for all types of asbestos present should be added for the total asbestos content. With a high percentage of asbestos, there are more fibers that can be released and contaminate the building environment. Therefore, if certain areas are identical in their assessment using the other seven factors, this factor will be helpful in establishing priorities and indicating which area needs to be addressed first. This factor is comprised of three levels: 0 - TRACE AMOUNTS TO ONE PERCENT 2 - ONE PERCENT TO FIFTY PERCENT 3 - FIFTY PERCENT TO ONE HUNDRED PERCENT Sampling Area Code Asbestos Content Factor Score (0,1,4) Provide attachments that substantiate proper analysis of all bulk samples taken of the material from this sampling area. Be certain that proper laboratory identifications are made and that quality assurance measures in sampling and analysis are described. Numerical,Calculations for Exposure Number (Index) FACTORS 1. CONDITION 2. WATER DAMAGE 3. EXPOSED SURFACE, "a. ACCESSIBILITY > 5. ACTIVITY/MOVEMENT 6. AIR PLENUM/AIR STREAM P< 1 3- FRIABILITY '% CONTENT SCORES (0,2,5) (0,1,2) (0,1,4) (0,1,4) (0,1,2) (0,1) ( 1,2.3) (0,2,3) SUM PR0DUC' - -- X EXPOSURE NUMBER COMMENTS: -19- n rs. c !U > CJ o- CSAMPLING AREA Building name: Address: ) INITIAL SURVEY DATA A Ac A' A Ac A' * A Type of Building: Elementary Sr. High Date Constructed:Date Renovated: Jr. High Other______________________ Areas Renovated a- a- a- * a- * * Ac Type of Construction: Pre-Cast Concrete Steel Frame Cast in Place Concrete Wood Masonry Other Type of Roof :_____ ______________________________________________________________ _________ _ Type of Ceiling: . Concrete Plasterboard Corrugated Steel Suspended Metal Lath Concrete Beam Steel Beai or Bar Joists Suspended Tile --------- Ceiling Height:ft. Ceiling Shape: Flat /"N AW, Dome Folded Plate /VW\ Barrel Coated Area: Ceiling Wall Sq. Ft. (Suspect) Material Type of Walls(if coated): Smooth Concrete Rough Concrete Masonry Block Plasterboard Metal Description of Wall Coating:____________________________________________________________ Type of Lighting: Surface Mounted Suspended Recessed No. of Lights Type of Heating/Cooling System:_________________________________ Type of Floor: Concrete Tile Wood Carpet Other: Number of Floors:Basement: Yes No What is above the sampling area being evaluated?__________ Ac A A A * A.- A A- -20- (continued) l itZ Toq't' *v Number of Faculty:______________ Number of Students: Number of Evenings Building used per Week:___________ Parts of Building Used in Evening:______________________ Purpose of Evening Use:_____________________________________ Building Owner or Manager Contacted:___________________ Evaluator Date * ** * -jir * ic * Vr Provide any additional information that may be useful for architectural or engineering purposes below. CSO14 2 4 3 8 -21-