The  Impact  Assessment  On  Road Pavement Towards Environmental Quality. DISSERTASION, Promotor : Prof. Dr. Ir.  Sobriyah,  MS.,  Co-Promotor  I:  Ir.  Ary  Setyawan,  M.Sc  (Eng).  Ph.D.,  Co-Promotor  II:  Dr.  Prabang  Setiyono,  M.Si.,  Department  of  Environmental  Science, Post-Graduate Faculty of Sebelas Maret University, Surakarta.Indonesia  as  one  of  the  developing  countries  will  continue  the  economic growth. Economic growth will be continued by the transportation need. The need of goods  and  human  mobilization  areincrease somust  be  fulfilled  by  good  and comfortable  moda  of  transportation.  The  vehicles  growthmust  befollowed  by  the growth  of  road. The  effort  to  build  the  road  that  safe,  comfortable  and  strong required  good  planning,  good  material  and  the  good  process  of  the  construction method.Road  constructionprocessinfluences  to  the  environmentalimpact.  The environmental  impact  happened  on  the  construction  and  operational  stages. The analysis of the environmental impact must be done in the planning stage to anticipate the environmental impact as the result of road construction project.  The aim of this research  to  know  the  influence  of  the material availabilityratio,  the material durabilityratioand emissions ratio from   the   pavement   construction   to   the environmental quality. The value of environmental quality uses IKLH.  The method usesdeskriptif analysis, experimental method, ratio analysis, scooring and regression analysis.Research  stage  include  the  data  collection  of  the  availability  of  pavement material,  testing  the  strength  of  a  material  pavement  both  of  rigid  pavement  and flexible  pavement,  and  the  calculation  of  greenhouse  gas  emissions  due  to  the pavement  construction.  Then  all  parameter  above  will  be  analyzed  to  find  their relationship  pattern  withthe  environmental  quality  index(IKLH)so  that  will  be obtained  the  impact  of  road  pavement  construction  toward  environmental  quality index. The value of environmental quality index of Central Java province in 2017is 58.15. The  indicator  of  IKLH  used  is Indeks  Kualitas  Udara  (IKU)and Indeks Kualitas  Tutupan  Lahan  (IKTL).  Both  of  the  indicator  above  is  influenced  by  the assessment parameter of pavement construction impact. The parameter of pavement construction impact are material availability, material durability, and green house gas emissions. Obtained  research  get  that  the  most  available  of  aggregate  is  andesit  rock. Data  about  material  avalaibilty  get  from  ESDM  Central  Java  province. Material availabilityratioget  by  divided  amount  of  material  availability  with  amount of  the exploration production, then value of material availability ratio scored. The scoring is done  because  an  interval  between  minimum  value  and  maximum  value  too  large. Scale  of  scoring  1  until  10.  Each  interval  get  by  substraction  the  maximum  with minimum  value  then itsresults  divided  by  number  of  range.  Then  get  empirical formula the relationship between material availabilityratiofrom scoring and  IKLH,obtained formula is IKLH = 0,7436 SM  + 55,259 where SM is material availabilityratio.Construction  method  analyzed  is  rigid  pavement  and  flexiblepavement  and used parameter ismaterial durability ratio. The parameter for material durability ratio for  rigid  pavement  is  compressive  strengthratioof  concrete  and  for  flexible pavementis  Marshall  stabilityratio. Compressive  strengthratiofor  rigid  pavement get by divided value of compressive strength with the planned compressive strength. Compressive  strengthratioinfluence  to  IKLH  by  mathematical  formula IKLH  = 20,933 TM +36,012 where TM is compressive strengthratio. Marshall stabilityratio for flexible pavement get by divided value of marshall stability test with the planned Marshall stability.  Marshall stability ratio also influenced to IKLH  by mathematical formula IKLH = 16,112TM + 39,274 where TM is marshall stabilityratio.Emissionsratioin   pavement   construction   work is   one   parameter   that influence to  IKLH.  Emissionsratio  get  by  divide  emissions  valuewith  CO2 absorbtion of green open space. Amount of emission calvulated by IPCC formula orconversion   method.   CO2absorbtion   get   by   multiplication   of   CO2absorbtion coefficient  with  green  open  space  where  CO2absorbtion  coefficient  is  129.92. Emission ratio for rigid pavement influence to IKLH by mathematical formula IKLH = -15,33  EM  +  63,337,  and  for  flexible  pavement IKLH  = -6,8548 EM+ 62,694 where EM is emission ratio.Relationship   between independent   variable   (material   availability   ratio, material  durability  ratio  and  emissions  ratio)  with  IKLH  as  dependent  variable  was analyzed by multiple linear regression analysis. Analysis was done by using statistic software  SPSSversion  10. From  regression  analysis  get  empirical  formulaof environmental  impact  assessmentfor  rigid  pavement  is IKLH  = 0,444  SM  +  9.177 TM–10,715 EM + 50,353 and for flexible pavement is IKLH = 0,416SM + 8,781TM–4,231EM  +  49,047.  From  above  formula  known  that  environmental  quality influenced by material availabilityratio, material durability ratioand emissionsratio. The  increasing  of material availabilityratioand material durabilityratiol  will  be increase the environmental qualityindex, but the increasing of emissionsratiowill be decrease the environmental qualityindex. Then from the elatisity and correlation test show the material durability ratio is the most influence parameter towards IKLH.  Keywords: IKLH, Material AvailabilityRatio, Material DurabilityRatio, Emissions Ratio