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45 APPENDIX A Survey Questionnaire and Survey Responses INTRODUCTION The main source of information on current airport pavement maintenance practices was a survey of airport pavement maintenance profession- als. The survey consisted of a four-page questionnaire which is reproduced herein in Tables 1A to 4A. The first two pages of the questionnaire contain, in addition to the introductory material, 11 questions concerning airport pavement management practices. Tables 3A and 4A (pages 3 and 4 of the survey questionnaire) contain questions regarding the use and performance of common airport pavement maintenance and rehabil- itation (M&R) treatments. Table 3A concerns M&R treatments applicable to asphalt concrete (AC) pavements, and Table 4A is for M&R treat- ments applicable to Portland cement concrete (PCC) pavements. The objectives of the survey, the survey procedures, survey response rate, and the key results of the survey are described in the main part of the synthesis. Additional survey results, that are not included in the main part of the report, are summarized in this appendix. In order to present the survey results efficiently, Tables 3A and 4A also contain the entries that represent the number of survey responses obtained. For example, referring to the first numerical entry in Table 3A, 37 airports reported routinely sealing cracks in AC pavements using hot-poured sealant. The corresponding percentages are presented in Tables 3 and 4 of the main report. For example, according to Table 3, 95 percent of airports (that have AC pavements on at least some of the facilities) routinely seal cracks in AC pavements using hot poured sealant.

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46 TABLE 1A SURVEY QUESTIONNAIRE, PAGE 1 OF 4 Survey Questionnaire Synthesis of Common Airport Pavement Maintenance Practices This survey questionnaire is distributed to practitioners engaged in the maintenance and preservation of airfield pavements. The results of the survey will be used to develop Synthesis of Common Airport Pavement Maintenance Practices. The survey is sponsored by Airport Cooperative Research Program. Details about the Program are available at http://www.trb.org/news/blurb_browse.asp?id=138. Thank you for your participation in this survey. Please send the completed survey to Dr. Jim Hall by email: jhall@ara.com or by fax: (601) 629-6169 before June 30, 2009. If you prefer to respond by a telephone interview instead, please contact Dr. Jim Hall at (601) 629-6165 Respondent Information Name: _________________________ Position: ______________________ Agency: _________________________ Address: _____________________________________________ Phone: ______________________ Fax: ___________________ Email:___________________________ General Facility Information Facility Name or Code: ______________________________ What is the largest aircraft using your facility? ________________________________ What is the predominant aircraft? ________________________________ What pavement surface types do you have at your facility? (Please check all appropriate boxes) Asphalt Portland Cement Composite Surface Facility Gravel Concrete (AC) Concrete (PCC) (AC over PCC) Treated Runways Taxiways Aprons Pavement Management 1. Does your agency operate a pavement management system (or a pavement maintenance system)? Yes Under development No If yes, for how long has the system been in use? Less than 2 years 3 to 5 years 5 to 10 years More than 10 years 2. What is your experience with a pavement management system (or a pavement maintenance system)? Please check all applicable boxes Excellent, couldn't do without it The system is accepted and used Not applicable Benefits outweigh costs Functional, but needs improvement Not useful 3. Which pavement management (or pavement maintenance) software do you use or plan to adopt or develop? 4. Who is involved in operating your pavement (or pavement maintenance) management system? In-house staff In-house staff with outside support Mainly outside staff/consultant

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47 TABLE 2A SURVEY QUESTIONNAIRE, PAGE 2 OF 4 5. How do you use the results of pavement management (or pavement maintenance) system? Please check all applicable boxes To keep track of the pavement condition To predict future pavement deterioration To determine the performance of the past pavement maintenance and rehabilitation treatments To prepare Capital Improvement Programs or annual budgets To obtain funding from FAA or other agencies 6. How do you evaluate the condition of your pavements? If yes, frequency of evaluation, years: Pavement evaluation procedure Runways Other facilities Pavement Condition Index (PCI) Yes Yes Other types of surface distress surveys, but not PCI Yes Yes If yes, what type of distress survey? Pavement smoothness (or roughness) surveys Yes Yes If yes, which roughness measure do you use? Periodic pavement friction surveys Yes Yes Periodic Falling Weight Deflectometer (FWD) surveys Yes Yes Other surveys? Please specify (e.g., digital imaging of the pavement surface) 7. How do you select pavement sections that require pavement maintenance or rehabilitation treatments? Please check all applicable boxes With the help of a computer program Engineering judgement Worst pavement condition first Decision trees or guidelines When a perceived hazard exist Pavement age Operational priorities Other considerations Preventive pavement maintenance is carried out to prevent premature pavement deterioration and is done at the right time (when the treatment is most cost-effective). Preventive maintenance treatments may include, for example, crack sealing or thin asphalt concrete overlays. 8. Do you systematically identify pavements that would benefit most from preventive maintenance? Yes When budget permits No 9. Do you implement preventive maintenance treatment at the right time? Yes Sometimes No 10. Has your agency recently (during last 10 years or so) evaluated the performance of specific pavement maintenance or rehabilitation treatments? We are particularly interested in new and innovative pavement preservation treatments and technologies. Yes No If yes, please elaborate or tell us where we can get additional information._____________________ 11. How do you obtain funding for pavement maintenance and rehab.? Please check all applicable boxes. Through FAA funding Through state funding Have dedicated funding for preventive maintenance Based on the last-year budget Based on pavement needs such as PCI level Based on needs to preserve pavement

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48 TABLE 3A SURVEY QUESTIONNAIRE, PAGE 3 OF 4 Maintenance and Rehabilitation of Asphalt Concrete Pavements Which of the following maintenance treatments do you use, or have tried, during the past 10 years? What is your experience in using them? Maintenance of Asphalt Concrete Pavements Current Performance Practice Comments, questions, experience Never Tried Have Tried Treatment Unknown Please comment on your experience V. Good Routine with specific treatments Good Poor Crack Hot- poured 37 5 8 30 4 Do you recommend routing of cracks sealing with before sealing? Yes No Cold-applied 4 3 1 4 1 Sometimes sealant Small area Hot mix 23 7 11 15 (pothole) Cold mix 19 8 3 12 9 patching Proprietary Do you recommend the use of proprietary using: mix 4 5 2 4 2 materials? Yes No Spray patching 2 3 5 (Includes manual chip seal) Machine patching with AC 12 6 7 10 1 Milling and machine patching 15 8 7 11 Surface treatment 11 8 1 13 2 Fine milling 3 2 1 4 Texturization Shot blasting 7 5 2 Surry seal 10 11 2 15 3 Micro-Surfacing 1 4 1 3 Do you use hot mix overlays less than 1" Hot mix overlay 20 10 12 12 1 thick? Yes No Milling and overlay 20 8 14 10 Hot in-place recycling 2 1 1 1 Cold in-place recycling 1 1 Whitetopping (PCC overlay) 3 3 3 1 1 Rejuvenators, fog seals, etc. 13 10 5 13 4 Other techniques/materials that you are using? (Please add)

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49 TABLE 4A SURVEY QUESTIONNAIRE, PAGE 3 OF 4 Maintenance and Rehabilitation of Portland Cement Concrete Pavements Which of the following maintenance treatments do you use, or have tried, during the past 10 years? What is your experience in using them? Maintenance of Exposed PCC Pavements Current Performance Practice Comments, questions, experience Never Tried Have Tried Treatment Unknown Please comment on your experience V. Good Routine with specific treatments Good Poor Bitumino us sealant 12 6 2 12 1 Joint/Crack sealing Silicone sealant 16 9 5 12 Neoprene seal 3 9 4 4 3 Sub-sealing 1 2 1 2 (under slab grouting) Load transfer Slab stitching 1 2 1 2 restoration Dowel retrofit 5 2 3 2 PCC 14 6 5 12 1 Shallow patch repair AC 12 8 3 11 3 using Do you recommend the use of proprietary Proprietary mix 7 7 5 5 2 materials? Yes No PCC 19 6 8 8 1 Full and partial depth AC 8 16 4 7 2 repairs or Do you recommend the use of proprietary replacement Proprietary mix 3 7 3 5 2 materials? Yes No using Precast panels 1 1 1 1 Diamond grinding 2 14 3 11 Controlled shot blasting 6 4 1 Micro-surfacing 2 1 1 Machine patching with AC 2 5 2 3 1 AC overlay 4 11 4 7 PCC overlay (white topping) 3 3 2 2 1 Other techniques/materials? (Please add) Thank you for completing the survey. Please send the completed survey to Dr. Jim Hall by email: jhall@ara.com or by fax: (601) 629-6169 before June 30, 2009. Applied Research Associates Inc. 112 Monument Place, Suite A, Vicksburg, Mississippi 39180-5156

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50 ADDITIONAL SURVEY RESULTS The key survey results are presented and discussed in the main part of the synthesis and are not reproduced herein. The following contains additional survey results. The survey questions are in an italic font; survey response data are in regular font. What pavement surface type do you have at your facility? Facility Asphalt Concrete (AC) Portland Cement Concrete (PCC) Composite (AC over PCC) Surface Treated Gravel Runways 37 23 13 3 1 Taxiways 37 24 8 1 0 Aprons 30 32 7 1 0 See Figure 11 in the main part of the synthesis. Figure 11 is based on 30 responses. 1. Does your agency operate a pavement management system (or a pavement maintenance system)? No. Percent Yes 29 60 Under development 11 23 No 8 17 If yes, for how long has the system been in use? See Figure 4, which is based on 28 responses. 2. What is your experience with a pavement management system (or a pavement maintenance system)? See Figure 5. Figure 5 is based on 33 responses of agencies that operate an airport pavement management system. None of the respondents checked "not useful." 3. Which pavement management (or pavement maintenance) software do you use or plan to adopt or develop? See Figure 22, which is based on 33 responses. An additional 17 respondents checked "not applicable." 4. Who is involved in operating your pavement (or pavement maintenance) management system? See Figure 23, which is based on 39 responses. 5. How do you use the results of pavement management (or pavement maintenance) system? See Figure 6, which is based on 38 responses. 6. How do you evaluate the condition of your pavements? See Table 2, which is based on 38 responses. 7. How do you select pavement sections that require pavement maintenance or rehabilitation treatments? See Figure 14, which is based on 47 responses. 8. Do you systematically identify pavements that would benefit most from preventive maintenance? See Figure 15, which is based on 48 responses 9. Do you implement preventive maintenance treatment at the right time? See Figure 17, which is based on 30 responses. 10. Has your agency recently (during last 10 years or so) evaluated the performance of specific pavement maintenance or rehabilitation treatments? Number Percent Yes 17 36 No 27 58 No response 3 6 See section "Survey Results" in chapter four for the list of innovative and additional treatments.

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51 11. How do you obtain funding for pavement maintenance and rehabilitation? See Figures 19 and 20, each based on 48 responses. Regarding the dedicated funding for preventive maintenance, see Figure 15. Additional information regarding maintenance and rehabilitation treatments of asphalt concrete pavements. Do you recommend routing of cracks in AC pavements before sealing? Number Percent Yes 15 34 No 2 4 Sometimes 20 23 No response 23 39 Do you recommend the use of proprietary materials for small area patching of AC pavements? Number Percent Yes 14 32 No 9 20 Sometimes 10 23 No response 17 25 Additional information regarding maintenance and rehabilitation treatments of portland cement concrete pavements. Do you recommend the use of proprietary materials for shallow patch repairs? Number Percent Yes 3 5 No 10 12 No response 16 83 Do you recommend the use of proprietary materials for full depth repairs? Number Percent Yes 4 10 No 4 10 No response 33 80 RESPONDING AIRPORTS Table 5A lists all 50 airports and airport agencies that completed the survey questionnaire. Also listed in Table 5A are the airport location, the average number of daily aircraft operations, and pavement type of airfield pavements. Geographical location of the airports is illustrated in Figure 1 of the main report.

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52 TABLE 5A LIST OF AIRPORTS Average Pavement State Airport Name Location No. of Daily Type Operations Arkansas Ozark Regional Airport Mountain Home 136 AC Eight small airports, the County of San 1 to 669 AC California largest is Gillespie Field Diego Meadows Field Airport Bakersfield 344 Both Colorado Springs Colorado Colorado 420 Both Municipal Airport Springs Delaware Sussex County Airport Georgetown 57 Both St. Augustine/St. Johns Florida St. Augustine 347 AC County Airport LaGrange Callaway LaGrange 47 AC Airport Savannah/Hilton Head Georgia Savannah 267 Both International Airport HartsfieldJackson Atlanta Atlanta 2,939 PCC Int. Airport Chicago O'Hare Chicago 2,563 Both International Airport Illinois Chicago Midway Chicago 730 Both International Airport Dubuque Regional Airport Dubuque 155 Both Iowa Des Moines International Des Moines 333 Both Airport Hammond Northshore Hammond 210 Both Regional Airport Louisiana HoumaTerrebonne Houma 243 Both Airport Baltimore Washington Baltimore 760 Both Maryland International Airport Easton Airport Easton 137 AC Boston Logan Massachusetts Boston 1,094 Both International Airport Detroit Metro. Wayne Michigan Romulus 1,266 Both County Air. GulfportBiloxi Mississippi Gulfport 153 Both International Airport HeslerNoble Field Laurel 63 Both SpringfieldBranson Missouri Springfield 181 Both Regional Airport Saint Paul Downtown Minnesota St. Paul 435 AC Airport MinneapolisSt. Paul St. Paul 1,240 PCC International Airport Dawson Community Glendive 16 AC Airport Montana Great Falls International Great Falls 115 Both Airport Nebraska Omaha Epply Airfield Omaha 366 Both Essex County Airport Caldwell 245 AC New Jersey Morristown Municipal Morristown 403 AC Airport Albuquerque International Albuquerque 522 AC Airport New Mexico Dona Ana County Santa Teresa 89 AC Airport New York JFK International Airport Queens 1,291 Both Port Columbus Columbus 449 Both International Airport Ohio Mansfield Lahm Airport 77 Both Dayton International Vandalia 300 Both Airport Altus/Quartz Mountain Altus 38 PCC Reg. Air.

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53 TABLE 5A (continued) Average Pavement State Airport Name Location No. of Daily Type Operations Oklahoma Arrowhead Airport Canadian 1 AC Boise City Municipal Boise City 10 AC Airport Oregon Portland International Portland 630 Both Airport 28 airports throughout Oregon N/A Both Oregon WilkesBarre/ Pennsylvania Avoca 178 Both Scranton Int. Air. Lone Star Executive Conroe 219 Both Airport Texas Mineral Wells Airport Mineral Wells 62 AC George Bush Houston 1,577 Both Intercontinental Air. Salt Lake City Utah Salt Lake City 1,071 Both International Airport Washington Dulles Chantilly 1,048 PCC International Airport Virginia Winchester Regional Winchester 100 Both Airport Washington Seattle Tacoma Seatac 946 PCC International Airport Snohomish County Airport Everett 311 Both Washington Ronald Regan National Washington, 754 PCC DC Airport D.C. Wyoming Airports throughout Wyoming N/A Both Wyoming N/A = not available.