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76 APPENDIX A Survey Questionnaire and Results NCHRP Synthesis Topic 41-12 Microsurfacing Best Practices Questionnaire for Public Agencies and Others PURPOSE OF THE SYNTHESIS: The purpose of this synthesis is to capture the various ways federal, state and local transportation agencies are utilizing microsurfacing as a preventive maintenance and/or pavement preservation treatment. The synthesis will identify different approaches and effective practices recognizing the differences in each of the climatic regions. The synthesis will also address how the agencies in the study utilize microsurfacing in high and low volume traffic conditions. You have been identified as a knowledgeable source for this information and we would like to synthesize your experience with other pavement maintenance professionals in the US and overseas to determine those practices that have produced successful microsurfacing projects. This questionnaire will take approximately 45 minutes to complete. The purpose of this questionnaire is to collect specific information on microsurfacing practices from sources ranging from the municipal to the international level. Additionally, those respondents that believe that they have a microsurfacing project that would make a good case study to illustrate a particularly successful microsurfacing best practice are invited to indicate their willingness to contribute detailed information about the project, and they will be contacted individually by the researcher to obtain the case study information. The results of this synthesis will be shared and distributed through AASHTO, the Federal Highway Administration, Transportation Research Board, and others, with the goal of assisting in the development and implementation of microsurfacing as a part of pavement preservation programs. I want to thank you in advance for your support for this project. This project's results will furnish a means to disseminate the experience of maintenance engineers from around the world in a very straightforward fashion. Thank you for your time and information. Douglas D. Gransberg, PhD, PE Question 1 [Mandatory] Respondent Information Point of Contact Name; contact info: Question 2 Type of Agency/Organization: Federal Agency; State/Provincial Agency; County Agency; Municipal Agency; Private Question 3 If you checked private organization, what type? Question 4 If private, what is your involvement in microsurfacing? Question 5 Does your agency use microsurfacing in its pavement maintenance and/or pavement preservation program? Yes No [Skip to End] Additional Comment (if you'd like to further explain): General Program Information: (Non-agency respondents, please skip to question 11) Question 6 At this time, what proportion of your agency's highway centerline miles have microsurfacing as the surface wearing course? Example: 200 miles maintained & 180 miles with micro = 200/180 Question 7 Do you follow a specific preventive maintenance cycle for microsurfacing? Yes No Don't know

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77 Question 8 If yes, what is the cycle length? (i.e., roughly how many years) Question 9 How much microsurfacing work does your agency do each year? Approximately $/year of national currency/year Which includes approximately center-line miles/km per year Question 10 What percentage of your microsurfacing work is done with in-house crews? % is done in-house Question 11 How do you rate your organization's overall experience with the performance of microsurfacing? Unacceptable Poor Good Excellent Not Applicable Contract Crew In-house Crew Question 12 What is the typical service life of microsurfacing projects with which you have been involved (i.e., how many years do they typically last)? NOTE: You will be asked for the design life (the life you use in the design process) in the next section. Typical service life = years Design Procedures: Non-agency respondents--please answer the questions for a typical agency with which you have worked. Question 13 Does your organization use a formal design process for microsurfacing projects? Yes No Don't know Question 14 [Mandatory] What is the major reason for organization's decision to apply a microsurfacing to a given pavement? (Check only one.) Distress (cracking) Oxidation Improve friction (skid) resistance Raveling Prevent water infiltration Fill surface rutting Provide a surface wearing course Improve striping visibility Other, please specify: Question 15 [Mandatory] Who performs the design? Agency in-house design section performs the Design consultant performs the design under design design contract Agency in-house materials lab section performs Microsurfacing contractor performs the design the design under the construction contract Agency in-house construction group performs the Don't know design Agency in-house maintenance group performs the Other; Please specify: design Question 16 If design is by others, does your agency review and approve/accept the design? Yes No Don't know Other, please specify:

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78 Question 17 What is the "trigger point" (i.e., the condition that makes you decide to place a new treatment) in your microsurfacing decision-making process? (Check all that apply.) Pavement condition rating or index Age of the surface Level/amount of cracking Roughness (IRI or other metric) Friction/skid number Rutting Amount of oxidation No trigger point Other, please specify: Question 18 Does your agency consider environmental aspects of microsurfacing (e.g., emulsion versus hot-mix energy usage, preservation versus rehabilitation, etc.) as part of the treatment selection process? Yes No Don't know If yes, please explain how it is considered: Question 19 Microsurfacing is often used to restore friction/skid resistance. Before microsurfacing is placed, how does a road's existing friction/skid number compare to your agency's minimum friction/skid resistance standards? Lower than minimum At or close to minimums Above minimums No friction/skid number standards used in this context Varies. Could be below, at, above the minimum standards. Question 20 How would you describe the level of distress (cracking, etc.) on roads that generally receive a microsurfacing? Severe Moderate Slight None Question 21 How do you characterize the roadway's structural integrity (e.g., pavement, base, and subbase) that generally receives a microsurfacing? Excellent Good Fair Poor Very Poor Question 22 How do you characterize existing pavement conditions before the design of microsurfacing applications? Roughness (IRI or other metric); Level of oxidation; Qualitative (visual) factors We do not characterize existing conditions Question 23 What is the design procedure(s) you use/or permit? ISSA A 143 Method ASTM D 3910-98 Method ASTM D 6372-99a Method Texas Transportation Institute Method (TTI-1289) Austroads AGPT04K/09 Method Benedict "Proposed Performance" Design Method Empirical method based on past experience No formal design method Individual organizational method, please specify: If you answered "Individual organizational method" to the above question, if possible, please briefly describe your process in a Word document and e-mail copy of your design method to: dgransberg@ou.edu after you complete the survey. Question 24 How many years has your agency used the design procedure(s) you identified in the previous question? Less than 1 year 1 to 5 years 5 to 10 years More than 10 years Don't know Question 25 What is the typical design life in years for microsurfacing projects in your agency?

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79 Question 26 What design criteria is used? (Check all that apply.) Pavement condition Absorption factor/oxidation Traffic volume Turning movements Percent trucks Texture factor Weather (cold/hot/rain/humidity) Precoat condition (green/dry) Source of materials Residual binder factor Number and width of lanes Grade/steepness factor Daily construction working Other, please specify: window (hours of work) Question 27 Do you vary the material design with regard to types of highways (e.g., urban, rural, etc.)? Yes No Don't know Question 28 If the answer to the previous question is yes, what are the factors used to differentiate between the different requirements? Number of lanes Average Daily Traffic Number of ESALs Proximity to urban areas Proximity to rural areas Other, please specify: Question 29 When field conditions warrant, do you apply a scratch (leveling) course in your typical microsurfacing design? Yes No Don't know Question 30 If the answer to the above question is yes, how does the size of aggregate in the scratch course differ from the surface course? Scratch coat aggregate is smaller Scratch coat aggregate is larger No change in scratch coat aggregate size Don't know Other, please specify: Contracting Procedures: Non-agency respondents--please answer the questions for a typical agency with which you have worked. Question 31 Do you feel that an adequate number of experienced microsurfacing contractors bid for your jobs? Yes No Don't know Question 32 How many microsurfacing contractors typically bid your jobs? 13 46 79 10 or more Question 33 Which statement below best fits the annual volume of your agency's microsurfacing program? We let virtually the same amount of microsurfacing every year. Our microsurfacing program fluctuates + 20% each year. Our microsurfacing program fluctuates + 50% each year. We rarely know how much microsurfacing we are going to do each year. Other, please specify: Question 34 Do you have a prequalified list of contractors who are allowed to bid on your microsurfacing projects? Yes No Don't know Question 35 Do you require training and/or certification for contractor personnel? Yes No Don't know

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80 Question 36 If yes, what type of training or certification? Question 37 Do you require training and/or certification for agency personnel? Yes No Don't know Question 38 If yes, what type of training or certification? Question 39 Do you require warranties in your microsurfacing projects? Yes No Don't know Question 40 If yes, what is the length of the warranty and what criteria (threshold values) are required? Question 41 In which months do you typically apply microsurfacing? January May September February June October March July November April August December Question 42 What types of contracts do you use for microsurfacing projects? (Check all that apply.) Unit price-low bid Lump sum/firm fixed price Cost plus Indefinite delivery/indefinite quantity Design-build Other, please specify: Question 43 What units do you use to measure and pay for microsurfacing binder? Square yard/square meter Gallon/liter Ton/tonne/megagram Other, please specify: Question 44 Please indicate your agency's reasons for using the pay units you selected above for binder. Shifts the Reduces Fairest to Easier to Don't know quantity risk to the cost the accurately why we the contractor contractor estimate use them Units of Area (SY/SM) Units of Volume (Gal/liter) Units of Weight (ton/tonne/MG) Question 45 What units do you use to measure and pay for microsurfacing aggregate?

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81 Question 46 Please indicate your agency's reasons for using the pay units you selected above for aggregate. Shifts the Reduces Fairest to Easier to Don't know quantity risk to the cost the accurately why we the contractor contractor estimate use them Units of Area (SY/SM) Units of Volume (CY/CM) Units of Weight (ton/tonne/MG) Question 47 How long is a typical microsurfacing project? Centerline miles OR Centerline kilometers Question 48 What is the maximum traffic volume on roads to which your agency applies microsurfacing? ADT 20,000 Materials: Non-agency respondents--please answer the questions for a typical agency with which you have worked. Question 49 What aggregate gradation(s) shown in Table 2-2 do you use for your microsurfacing surface wearing course? (Check all that apply.) Type I Type II Type III Other: Please Specify: Question 50 Which gradation is most commonly used? Type I Type II Type III Other: Please Specify: Question 51 Are any special gradations used? Yes No Don't know If Yes, please specify the special gradations:

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82 Question 52 What is the annual breakdown, on an approximate percentage basis, for the binders that your agency typically uses for microsurfacing projects? Binder % of Program Binder % of Program SS-1 CQS-P SS-1H CQS-1H CSS-1 CQS-1HP CSS-1P LMCQS-1H CSS-1H Ralumac CSS-1HP Quick Set Mixing Grade Other: Please Specify binder and %: Question 53 How do you select the binder type for microsurfacing jobs? Local climate Traffic volume or ESALs Weather conditions in which seal will be applied Identified during design Compatibility with aggregate Past experience Other, please specify: Question 54 Do you use modifiers with your base asphalt or binder? Yes No Don't know Question 55 If yes, what modifiers are used? Polymers Latex Additives Anti-stripping agents Styrene Butadiene Rubber (SBR) SBR--Polyisoprene SBR--Thermoplastic Elastomers Other, please specify: Equipment: Non-agency respondents--please answer the questions for a typical agency with which you have worked. Question 56 What type of mixing equipment do you require? Continuous self-propelled Truck-mounted Both Other, please specify: Question 57 Do you require computer controlled mixing equipment? Yes No Don't know Question 58 What type of mixture controls do you require? Computer Revolution counter Other: Please specify: Question 59 What roller types are considered appropriate for use on microsurfacing? Static steel Pneumatic-tired Combination pneumatic/steel Vibratory rollers No rollers used

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83 Question 60--Choice--One Answer (Drop Down) Do you require any specific makes and models (proprietary specifications) for the microsurfacing equipment? Yes No Don't know Question 61 If the answer to the above question is yes, which types have specified makes or models? Mixing equipment Rolling equipment Spreader boxes Traffic control equipment/devices Quality Assurance and Quality Control: Non-agency respondents--please answer the questions for a typical agency with which you have worked. Question 62 Who conducts the inspection of construction operations? Your agency Private consultant Contractor Other, please specify Question 63 Do you use an independent laboratory to evaluate microsurfacing mix design? Yes No Don't know Question 64 Does your agency have an incentive/disincentive pay factor for the aggregate meeting the target submitted on the mix design? Yes No Don't know Question 65 If the answer is yes to the above, please indicate the nature of the incentive/disincentive program? The incentive/disincentive program is: Question 66 Which of the following mix design tests are performed on your projects? Residual Asphalt Content Penetration Softening Point Sand equivalent Soundness Abrasion resistance Wet Stripping Test ISSA 114 Tests for the presence of clay Percent Sodium Sulfate Loss (resistance to freeze/thaw) Consistency Test ISSA TB 106 Modified Cohesion Test ISSA TB 139 Loaded Wheel Test ISSA TB 109 Wet-Track Abrasion ISSA TB 100 Set Time Test Cure Time Test ISSA TB 139 Lateral Displacement Test ISSA TB 147 Classification Test ISSA TB 144 Mix Time Test ISSA TB 113 Modified Cup Flow Test TTI Mixing Test Compatibility of aggregate with binder Question 67 Do you perform any field tests to monitor the quality of the mix? Yes No Don't know Question 68 If yes, what tests are done? Question 69 Do you take field material samples for compliance testing? Yes No Don't know Question 70 If yes, who takes the samples? Agency personnel General Engineering Consultant Contractor Independent lab

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84 Question 71 When testing and accepting the aggregate for specification compliance, where is the acceptance test conducted? The pit/source The stockpile While transferring into the nurse units Just before it enters the microsurfacing paver mixing chamber Don't know Question 72 Do you require calibration of mixing equipment? Yes, in the field Yes, not in the field. Contractor furnishes a submittal that verifies the calibration. No Don't know Question 73 If yes, how often? Question 74 Do you require calibration of spreading equipment? Yes, in the field Yes, Contractor furnishes a submittal verifies the calibration No Don't know Question 75 If Yes, how often? Question 76 What tolerances are allowed for testing mix designs? TEST TOLERANCES Mix design testing Stockpile testing Emulsion testing Other testing Question 77 Beyond calibration of mixing and spreading equipment, do you perform any other field tests to check material application rates? Yes No Don't know Question 78 If yes, what tests are done? Please e-mail a copy of the test to dgransberg@ou.edu if possible. Product Performance: Non-agency respondents--please answer the questions for a typical agency with which you have worked. Question 79 How does your organization define "success" for a microsurfacing project? Meets expected service life Does not fail shortly after construction Achieves desired friction/skid number Qualitative measures--look, color, etc. Meets project specification Question 80 What common distresses are observed in your completed microsurfacing projects? Raveling Bleeding Corrugation Crack reflection Streaking Transverse joints Longitudinal Joints Other; Please specify:

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85 Question 81 Rate these factors as to their impact in minimizing microsurfacing defects? Most Some Neutral Little No Impact Impact impact impact Design Method Better Binder Better Aggregates Construction Procedure Contractor Experience QA/QC Program Preconstruction road preparation Selecting the right project Question 82 What is the most common public-user complaint about microsurfacing? (Check one only.) Loose stone Road noise Vehicle ride Appearance Don't know We don't get complaints Question 83 How would you generally describe the pavement ride on roads after they receive a new microsurface? Excellent Good Fair Poor Very Poor Question 84 If your organization had microsurfacing failures, which of the following were a likely cause? Weather Improper application rate Dirty or dusty aggregate Aggregate gradation Improper ambient and/or pavement temperature Improper binder viscosity Improper binder temperature Not applicable Other, Please specify: Question 85 Which factors are most critical in achieving the required service life of your microsurfacing projects? Original substrate surface quality Underlying pavement structure Maintenance funding Friction loss Traffic Cold climate considerations (freeze/thaw cycles, snowplowing, etc.) Question 86 Which methods do you use to maintain your microsurfaced roads? (Check all that apply.) Crack sealing Surface treatments (seal coat) Fog seal None I don't know Question 87 If there is anything that you would like to add that was not covered in this questionnaire that you feel would benefit this study, please write your comments below: Additional comments:

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86 Thank you very much for your contribution. If you input your e-mail on the initial page, you will be sent a link where you can download a free copy of the completed synthesis when it is completed. In the meantime, feel free to give me a call if you have questions on this subject. Doug Gransberg, PhD, PE Principal Investigator University of Oklahoma 405-325-6092 dgransberg@ou.edu TABLE A1 SUMMARY OF SURVEY RESPONSES Agency Use Micro? Agency Use Micro? Agency Use Micro? Agency Use Micro? AK No KS Yes OK Yes AB Yes AL Yes LA Yes OR No BC Yes AR No MI Yes OR-W No MNT Yes AZ Yes MN Yes PA Yes NB Yes CA Yes MO Yes RI No NF No CN No MS Yes SC Yes NS Yes CO No MT No SD Yes NWT No DE Yes NC Yes TN Yes ON Yes FL No ND Yes TX Yes PEI No GA No NH Yes UT Yes QB Yes HI No NJ* Yes VA Yes SA Yes IA Yes NM Yes VT No YK No ID No NV Yes WA No AU--Vic Yes IL Yes NY yes WI* Yes NZ--Cant Yes IN Yes OH* Yes WY Yes NZ--Well Yes * Responded "yes" to survey, but did not submit a complete response.

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IL IA IN MI LA AL AZ State/Prov KS DE CA NH ND NC NM MN MO 5 7 5 8 5 Question 25: What is the typical design life in DK 4to7 none 5 to 7 6 to 8 6 to 7 7 to10 7 to10 years for microsurfacing projects in your agency? 5 years 5 years 5 years X X X X X X X X X X X X X Question 26 design procedure: Pavement X X X X Question 26: Absorption Factor/Oxidation X X X X X X X X Question 26: Traffic Volume X Question 26: Turning Movements X X X X X Question 26: Percent trucks X Question 26: Texture factor X X X X Question 26: Weather Question 26: Precoat condition (green/dry) X X X X X Question 26: Source of materials X X X Question 26: Residual binder factor X X X X Question 26: Number and width of lanes X Question 26: Grade/steepness factor X X X Question 26: Daily construction working window (hours of work) No No No No No No No No Question 27: Do you vary the material design DK DK DK DK DK Yes Yes Yes with regard to types of highways ? X X Question 28: Average Daily Traffic X Question 28: Number of ESALs X Question 28: Proximity to urban areas X Question 28: Proximity to rural areas No No No Question 29: When field conditions warrant, do Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes you apply a scratch (leveling) course in your typical microsurfacing design DK Question 30: If the answer to the above question Other Same Same Same Same Same Same Same Same Same Same is yes, how does the size of aggregate in the Smaller scratch course differ from the surface course? No No No Scratch coNo No No No No No Question 31: Do you feel that an adequate DK DK Yes Yes Yes Yes Yes number of experienced microsurfacing contractors bid for your jobs Question 32: How many microsurfacing 1to3 1to3 1to3 1to3 4to6 1to3 1to3 1to3 1to3 1to3 1to3 1to3 1to3 4to6 1to3 1to3 contractors typically bid your jobs? Question 33: Which statement below best fits 20% 20% Other Other Other Other Same Same Same the annual volume of your agency's Different Different Different Different Different Different Different microsurfacing program? Question 34: Do you have a prequalified list of DK DK No; No; No; No; No; No; No; Yes; Yes; Yes; Yes; Yes; Yes; Yes; contractors who are allowed to bid on your microsurfacing projects? Question 35: Do you require training and/or DK DK DK DK DK No; No; No; No; No; No; No; No; No; No; DK; certification for contractor personnel? 91

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92 1 25 26 26 26 26 26 26 26 26 26 26 26 26 26 27 28 28 28 28 29 30 31 32 33 34 35 NV 5 X X X X No Yes Same Yes 1to3 Same Yes; No; NY 6 to 8 X X No Yes Same Yes 1to3 20% No; No; OK 10 X X X X No Yes Other No 1to3 Other Yes; DK PA 5 to 7 X X X X X X Yes X Yes Same Yes 5to7 Different Yes; No; SC DK No Yes Same No 1to3 20% Yes; No; SD 5 DK DK Yes 1to3 DK DK TN 6 to 8 X X X Yes X Yes Same Yes 1to3 Same No; No; TX 5 to 7 X X No No Yes 1to3 20% No; No; UT 6 to 10 X X X X X X X X No Yes Same No 1to3 50% No; No; VA na X X X X X X Yes X Yes Other No 1to3 Different No; Yes; WY 7to10 X Yes X Yes Same No 1to3 20% No; No; AB 5 X X X X X X X No No No 1to3 Other No; No; BC 5 X X X X X X No Yes Same No 1to3 Other No; No; MNT 10yrs X X X X X X No Yes Same Yes 1to3 Same No; Yes; NB 5 X No Yes Same No 1to3 Different No; No; NS 7 to 10 X X No Yes Same No 1to3 Same No; No; ON 7 to 10 X X X X Yes X Yes Same Yes 1to3 50% No; No; QB 7 X No Yes Smaller No 1to3 Same No; No; SA 5 X No No No 4to6 20% No; No; AU 15 to 20 X No Yes Same No 1to3 50% Yes; No; NZ - Cant 8 years X X X X X X X X X Yes Yes Same Yes 1to3 20% Yes; No; NZ - Well 8 years X X X X X X X X X Yes Yes Same Yes 1to3 20% Yes; No;

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IL IA IN MI LA AL AZ KS State/Prov DE CA NH ND NC NM MN MO Question 37: Do you require training and/or DK No; No; No; No; No; No; No; No; No; No; No; No; No; Yes; Yes; certification for agency personnel? Question 39: Do you require warranties in your No; No; No; No; No; No; No; No; No; No; No; No; No; Yes; Yes; Yes; microsurfacing projects? Question 40: If yes, what is the length of the 1to3 warranty and what criteria(threshold values) are 1 years 3 years required? Question 41: January Question 41: February X X Question 41: March X X X X Question 41: April X X X X X X X X X X X Question 41: May X X X X X X X X X X X X X X X X Question 41: June X X X X X X X X X X X X X X X Question 41: July X X X X X X X X X X X X X X X Question 41: August X X X X X X X X X X X X Question 41: September X X X Question 41: October Question 41: November Question 41: December X X X X X X X X X X X X X X X X Question 42: Unit price-low bid X Question 42: Indefinite delivery/indefinite quantity X X X X Question 43: Square yard/square meter binder X X X X X X Question 43: Ton X X X X X X 4 Question 43: Gallon/liter 4 4 5 4 Question 44: Reason Units of Area (SY/SM) 4 3 3 3 5 3 5 Question 44: Units of Volume (Gal/Liter) 4 2 3 3 5 3 Question 44: Units of Weight (ton/tonne) X X X X Question 45: Units of Area: Square yard/meter Question 45: Units of Volume: Cubic yard/meter X X X X X X X X X X Question 45: Units of Weight: Ton/tonne 4 2 4 4 5 Question 46: Reason Units of Area (SY/SM) 5 5 Question 46: Units of Volume (CY/CM) 4 4 3 3 3 3 5 3 4 3 Question 46: Units of Weight (ton) 8 2 9 2 6 10 10 25 10 10 10 10 Question 47: Ave job length Center-line miles 7.2 2to15 7to10 5 2 5 3 5 5 5 5 5 5 Variable 3 3 2 5 4 4 Question 48:max ADT 93

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94 1 37 39 40 41 41 41 41 41 41 41 41 41 41 41 41 42 42 43 43 43 43 44 44 44 45 45 46 46 46 47 NV Yes; Yes; 2 X X X X X X 2 2 2.5 NY No; Yes; 1year X X X X X X x 3 X 4 5to10 OK DK Yes; 1year X X X X X X X X 5 5 5 X 5 5 4 8 PA No; No; X X X X X X 4 X 4 2to6 SC No; No; X X X X X X X X X 3 X 3 2 SD DK DK X X X X X X 5 X 5 TN No; No; X X X X X X X X 3 2 X X 3 2 15to20 TX No; Yes; 2year X X X X X X X X 4 X 4 5t015 UT No; No; X X X X X X X 3 X 4 5to10 VA Yes; No; X X X X X 4 X 4 5 WY Yes; No; X X X X X X 4 X 3 7 AB No; Yes; 1year X X X X X X 5to10 BC DK Yes; 1year X X X X X 3 X 3 20 MNT No; Yes; 2yr X X X X X 4 X 4 15km NB No; Yes; X X X X X 4 X 4 varies NS No; Yes; 2yr X X X X X X X 4 X 4 10 ON No; Yes; 2yr X X X X X X X 4 X 4 5to10 QB No; Yes; 1yr X X X 3 X 4 10 SA Yes; Yes; 1yr X X X X X X X 4 X 4 4t07 AU No; Yes; 1yr X X X X X X 4 5 4 X 5 4 5 16to50 NZ - Cant No; Yes; 1yr X X X X X X X X X 4 3 NZ - Well No; Yes; 1yr X X X X X X X X X 4 3

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IL IA IN MI LA AL State/Prov AZ KS DE CA NH ND NC NM MN MO 5 2 5 3 5 5 5 5 5 5 3 3 2 5 4 4 Question 48:max ADT X Question 49: Type I X X X X X X X X X X X Question 49: Type II X X X X X X Question 49: Type III Question 50: Which gradation is most commonly used? Type II Type II Type II Type II Type II Type II Type II Type II Type II Type III Type III Question 51: Are any special gradations used? No No No No Type III No No No Type III No No No No No No Other: Ple Yes 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Question 52: SS-1: (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Question 52: SS-1H: (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Question 52: CSS-1: (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Question 52: CSS-1P (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Question 52: CSS-1H: (%) 100 0 0 0 0 0 0 0 0 0 0 0 60 Question 52: CSS-1HP: (%) 100 100 100 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Question 52: CSS-1P: (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 Question 52: CQS-1H: (%) 100 0 0 0 0 0 0 0 0 0 0 0 100 0 0 0 40 Question 52: CQS-1HP: (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Question 52: LMCQS-1H: (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Question 52: RalumacTM : (%) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Question 52: Quick Set Mixing Grade: (%) X Question 53 How do you select the binder type: X Question 53: Traffic volume or ESALs 100CRS-2P Question 53: Weather conditions in which seal Question 53: Identified during design X X X X X X X X Question 53: Compatibility with aggregate X X X X X Question 53: Past experience Question 54: Do you use modifiers with your Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes base asphalt or binder? X X X X X X X X X X X X Question 55: Polymers X X X Question 55: Latex X X Question 55: Additives Question 55: Anti-stripping agents Question 55: Styrene Butadiene Rubber (SBR) Question 55: SBR- Polyisoprene X Question 55: SBS Thermoplastic Elastomers Question 56: What type of mixing equipment do CSP CSP CSP Both CSP Both CSP Both Both CSP Other Other you require? Question 57: Do you require Com controlled No No No No No No No No Other No CSP No DK CSP DK Yes Yes Yes mixing equipment? Question 58: What type of mixture controls do Rev Rev Rev Rev Rev Rev Rev Com Com Com Com Other Other you require? 95

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96 1 48 49 49 49 50 51 52 52 52 52 52 52 52 52 52 52 52 52 53 53 53 53 53 53 54 55 55 55 55 55 55 55 56 57 58 NV 5 X X Type III No 0 0 0 0 0 0 0 0 0 0 0 0 X Yes X CSP No Other NY 5 X X Type II No 0 0 0 0 0 0 0 0 100 0 0 0 X Yes X X Both No Rev OK 5 Other: Ple No 0 0 0 0 0 0 0 0 0 0 100 0 X DK CSP DK Com PA 5 X Type II No 0 0 0 0 0 0 0 0 0 0 0 0 X Yes X Both No Other SC 4 X Type II No 0 0 0 0 0 0 0 100 0 0 0 0 Yes X Both Yes Com SD 3 Other: Ple No 0 0 0 0 0 0 0 0 0 0 0 0 DK Other DK TN 5 Other: Ple Yes 0 0 0 0 0 0 0 0 100 0 0 0 X Yes X X X X CSP Yes Com TX 5 Other: Ple Yes 0 0 0 100 0 0 0 0 0 0 0 0 X Yes X CSP No Rev UT 5 X Type III No 0 0 0 0 50 25 0 0 0 0 25 0 X X Yes X Both Yes Com VA 5 Other: Ple Yes 0 0 0 0 0 0 0 100 0 0 0 0 X Yes X Both No Other WY 4 X Type III No 0 0 0 0 0 0 0 0 100 0 0 0 X Yes X CSP No Rev AB 5 X Type III No 0 0 0 100 0 0 0 0 0 0 0 0 X DK CSP No Rev BC 4 X Type III No 0 0 0 100 0 0 0 0 0 0 0 0 X X Yes X Other DK MNT 2 X Type III No 0 0 0 0 0 0 0 0 100 0 0 0 X Yes X Both Yes Com NB 5 X Type III No 0 0 0 0 100 0 0 0 0 0 0 0 X No Both DK NS 5 X Type III No 0 0 0 0 0 100 0 0 0 0 0 0 X Yes X X Both No Other ON 5 X X Type III Yes 0 0 0 0 100 0 0 0 0 0 0 0 X Yes X CSP Yes Com QB 4 X Type II Yes 0 0 0 100 0 0 0 0 0 0 0 0 X Yes X Both Yes Com SA 4 X Type III No 0 0 0 0 0 0 0 0 100 0 0 0 X Yes X X Both Yes Com AU 1 Other: Ple No 0 0 0 0 0 0 0 0 0 0 0 0 X Yes X CSP No Rev NZ - Can4 X Type II Yes 0 0 0 0 0 0 0 12 12 0 0 12 Yes X CSP No Rev NZ - We 4 X Type II Yes 0 0 0 0 0 0 0 12 12 0 0 12 Yes X CSP No Rev

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IL IA IN MI LA AL AZ State/Prov KS DE CA NH ND NC NM MN MO X Question 59: Static steel X X Question 59: Pneumatic-tired X Question 59: Combination pneumatic/steel Question 59: Vibratory rollers X X X X X X X X X X X X Question 59: No rollers used Question 60: Do you require any specific makes No No No No No No No No No No No No No DK and models (proprietary specifications) for the microsurfacing equipment? X X X X X X X X X X X X X X X Question 62 inspection of construction : Your agency Question 62: Private Consultant Question 62: Contractor Question 62: Other No No No No No No No No No No No No Question 63: Do you use an independent DK Yes Yes laboratory to evaluate microsurfacing mix design? No No No No No No No No No No No No No Question 64: Does your agency have an incentive/ DK Yes disincentive pay factor for the aggregate meeting the target submitted on the mix design X X X X X X X X X Question 66 mix design tests: Residual Asphalt X X X X X Question 66: Penetration X X X X X X X Question 66: Softening Point X X X X X X X X X Question 66: Sand equivalent X X X X X X X Question 66: Soundness X X X X Question 66: Abrasion resistance X X X X X X X X Question 66: Wet Stripping Test ISSA 114 X X X Question 66: Tests for the presence of clay X X Question 66: Percent Sodium Sulfate Loss X Question 66: Consistency Test ISSA TB 106 X X X X Question 66: Modified Cohesion test ISSA TB X X X X X Question 66: Loaded Wheel Test ISSA TB 109 X X X X X X X X Question 66: Wet-Track Abrasion Test ISSA TB 100 X X Question 66: Set Time Test Question 66: Modified British Wheel Tracking X X X Question 66: Cure Time Test ISSA TB 139 X X X Question 66: Lateral Displacement Test ISSA TB 147 X X X X X Question 66: Classification Test ISSA TB 144 X X X X X X Question 66: Mix Time Test ISSA TB 113 Question 66: Modified Cup Flow Test X Question 66: TTI Mixing Test 97

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98 1 59 59 59 59 59 60 62 62 62 62 63 64 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 66 NV X No X Yes No X X X X X X X X X X X X X X NY X No X No No X X X X X X X X X X X X X OK X No X No No PA X No X No No X X X X X SC X No X No No X SD DK X DK DK TN X No X No No X X X X X X X X X X X TX X No X No No X X X X X UT X No X No Yes X X X X X X VA X No X No No X X X X X X WY X No X No Yes X X X X X X X X X X X AB X No X No No X X X X X X X BC DK X No No X X X X X X X MNT X No X No Yes X NB No X No No X X X X X X X X X NS X X No X No No X X X X X X X X X ON X No X No No X X X X X X QB X X No X No No X X X X X X X SA X No X No No X X X X X X X X X X X AU X No X No Yes NZ - Cant X No X No No X X X X NZ - Well X No X No No X X X X

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IL IA IN LA AL State/Prov AZ KS DE CA NM MN NH X ND X NC X MO X MI X Question 66: Compatibility of aggregate with binder Question 67: Do you perform any field tests to No No No No No No No DK Yes Yes Yes Yes Yes Yes Yes monitor the quality of the mix? Question 69: Do you take field material samples No No No Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes for compliance testing? X X X X X X X X X X Question 70 who takes the samples: Agency Question 70: General engineering Consultant X X Question 70: Contractor Question 70: Independent lab personnel Question 71 where is the acceptance test conducted? : The pit/source X X X X X X X X Question 71: The stockpile X Question 71: While transferring into the nurse units X Question 71: Just before it enters the microsurfacing paver mixing chamber X Question 71: DK Question 72: Do you require calibration of DK DK Cert Cert Cert Cert Field Field Field Field Field Field Field Field Field mixing equipment? Question 74: Do you require calibration of No No No No No No DK Cert Cert Field Field Field Field spreading equipment? Question 77: Beyond calibration of mixing and No No No No No No No No Yes Yes Yes Yes Yes spreading equipment, do you perform any other field tests to check material application rates? X X X X X X X X X X Question 79 define "success": Meets expected service life X X X X Question 79: Does not fail shortly after X X X X X X Question 79: Achieves desired friction/skid number X X X X X Question 79: Qualitative measures -- look, etc. X X X X X X X Question 79: Meets project specification Lac X X Question 80 What common distresses: Raveling X Question 80: Bleeding X Question 80: Corrugation X X X X X X X X Question 80: Crack Reflection X X X X X Question 80: Streaking X X X X Question 80: Transverse Joints X X Question 80: Longitudinal Joints 3 1 3 2 2 2 2 3 3 3 3 2 2 Question 81 Rate Impact: Design Method 3 2 1 1 2 2 2 3 3 5 3 3 1 Question 81: Better Binder 3 2 1 1 2 2 2 3 3 5 2 3 1 Question 81: Better Aggregates 3 2 1 1 2 1 2 3 3 1 1 2 1 Question 81: Construction Procedure 3 1 1 1 1 1 2 3 3 1 1 1 1 Question 81: Contractor Experience 3 3 2 2 3 2 2 3 3 3 2 3 2 Question 81: QA/QC Program 3 3 2 1 2 3 2 3 3 2 1 2 1 Question 81: Preconstruction road preparation 3 3 1 1 1 3 1 3 3 1 1 2 1 Question 81: Selecting the right project 99

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100 1 66 67 69 70 70 70 70 71 71 71 71 71 72 74 77 79 79 79 79 79 80 80 80 80 80 80 80 81 81 81 81 81 81 81 81 NV Yes Yes X X Field Field No X X X X 2 2 2 1 1 2 1 1 NY No Yes X X Cert No No X X X 2 2 2 2 1 2 2 1 OK No No X No Field No X X 3 3 3 3 3 3 3 3 PA Yes Yes X X Field Field No X X X 3 2 2 3 2 2 1 2 SC Yes Yes X X Field Field No X X X X X X 2 2 2 2 1 3 2 1 SD DK DK DK Field No X X X X X X 3 2 2 1 1 2 2 1 TN No Yes X X Field DK DK X X X 3 3 3 1 1 3 2 1 TX Yes Yes X X Field Field No X X X X 2 3 3 2 1 2 2 1 UT Yes Yes X X Cert No Yes X X X X 3 3 3 3 2 3 2 1 VA Yes Yes X X Cert WY No No X Field Cert Yes X X X 3 3 3 3 1 3 3 1 AB No Yes X X Field Field No X X X X X X 1 2 2 1 1 2 2 2 BC X No Yes X X Field No No X X X X X 3 3 3 3 3 3 3 3 MNT Yes Yes X X Field Field Yes X X X X X X 1 2 1 2 2 2 2 1 NB No No X Cert Field No X X X 3 3 3 3 2 3 2 2 NS X No No No No No X X X X 2 2 2 1 2 3 4 2 ON No Yes X X No No No X X X X X 3 3 3 3 2 3 2 1 QB Yes No X Field No Yes X X X 2 1 1 1 1 2 2 1 SA X Yes Yes X X No No Yes X X X X 3 3 3 1 2 3 2 1 AU Yes Yes X X Field NZ - Ca No Yes X X X Cert Cert No X X 2 2 3 2 2 2 2 1 NZ - We No Yes X X X Cert Cert No X X 2 2 3 2 2 2 2 1

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1 AL State/Prov DE VA AU NM MNT 81 Question 82: What is the most common public- MI DK IL DK NC App MN App SA App QB App NB App TX App SC App NY App NV None UT Noise TN Noise SD Noise PA Noise OK Noise user complaint about microsurfacing? (check one) WY Other; 83 Question 83: How would you generally describe the pavement IN Noise Fair Fair Fair Fair ND Ride Good Good MO None Good Good Good LA None Good IA Noise Good CA Looses Good NZ -None Good NZ -None Good Good ON None Good NS Noise Good Good BC Looses Good AB None Good Good Good Good Good Good Good Good Good Good ride on roads after they receive a new microsurface NH None Excellen None Excellent X KS Noise Good X AZ None Good X X X Good X X X X X Question 84 microsurfacing failures: Weather x X X X X X X X X X X X X Question 84: Improper application rate X X X X X Question 84: Dirty or dusty aggregate X X X X Question 84: Aggregate gradation X X X X X X X X Question 84: Improper ambient and/or pavement temperature x X X X X X Question 84: Improper binder viscosity X X X X Question 84: Improper binder temperature X X Question 84: Not applicable X X X X X X X X X X X X X X X X Question 85 factors critical to required service life X X X X X X X X X X X X X X X X X X X X X X Question 85: Underlying pavement structure X X X Question 85: Maintenance funding X X X Question 85: Friction loss X X X X X X X Question 85: Traffic X X X X X X X X Question 85: Cold climate considerations X X X X X X X X X X X X X X X X X Question 86 methods do you use to maintain: X X X X X X X Question 86: Surface treatments (seal coat) X Question 86: Fog seal X X X X X X X X X X X X 84 84 84 84 84 84 84 84 85 85 85 85 85 85 86 86 86 86 Question 86: None 101