# Green Public Procurement at a Regional Level.
## 3 Method
### Characteristics of the Sample  
Some 1025 procedures were collected from work tender calls in the Valencia region in 2016 and 2017. After a revision of the documentation, only 967 were useful for the analysis (named N\({}_{\text{T}}\) at Table 1), 675 from 2016, and 292 from2017. One hundred and forty-three contracting authorities were identified. Three hundred and forty-two procedures were tendered by administrations in the province of Valencia, 122 in Castellon, 262 in Alicante, and 241 from administrations covering the whole region. The construction sector is divided into two subsectors. The building subsector includes all types of buildings: housing, factories, offices, schools, and sports facilities. The civil engineering subsector includes roads, ports, airports, railways, and water pipelines. In the sample, 395 projects belong to building subsector (named as N\({}_{\text{B}}\)) and 572 belong to the civil engineering subsector (named as N\({}_{\text{C}}\)). The distribution for the contracting authorities with more than 10 procedures is presented in Table 1 and the list of all the contracting authorities is included in Appendix A. Some 62.8% of the sample was composed of competitive tenders (EMAT)--and auctions formed the remaining 37.2%. Five price intervals were established to analyse the influence of the project budget. Table 2 presents the number of projects included in each interval, both for each subsector and for the sample total. \begin{table}
\begin{tabular}{c c c c} \hline
**ID** & **Contracting Authorities** & **N\({}_{\text{B}}\)** & **N\({}_{\text{C}}\)** & **N\({}_{\text{T}}\)** \\ \hline
103 & Valencia Regional Council for Housing, Public Works and Infrastructure & 17 & 52 & 69 \\
121 & Alicante Provincial Council & 6 & 51 & 57 \\
12 & Alicante City Council & 10 & 36 & 46 \\
96 & Council for Agriculture, Environment, Climate Change and Rural Development & 1 & 43 & 44 \\
84 & Valencia City Council & 16 & 27 & 43 \\
98 & Council for Education, Research, Culture and Sport & 36 & 0 & 36 \\
6 & Castellon City Council & 12 & 21 & 33 \\
120 & Valencia Provincial Council & 0 & 32 & 32 \\
125 & Railways of the Generalitat Valenciana & 5 & 16 & 21 \\
20 & Benidorm City Council & 6 & 15 & 21 \\
74 & San Vicente del Raspeig City Council & 8 & 12 & 20 \\
32 & Elche City Council & 7 & 12 & 19 \\
47 & Lliria City Council & 8 & 11 & 19 \\
57 & Onteniente City Council & 5 & 13 & 18 \\
64 & Picassent City Council & 5 & 13 & 18 \\
94 & City of Arts and Sciences & 17 & 0 & 17 \\
61 & Paterna City Council & 8 & 7 & 15 \\
5 & Alzira City Council & 7 & 7 & 14 \\
139 & University of Alicante & 12 & 2 & 14 \\
59 & Oropesa del Mar City Council & 5 & 8 & 13 \\
42 & Ibi City Council & 5 & 6 & 11 \\
27 & Catarroja City Council & 5 & 6 & 11 \\
104 & General University Hospital of Valencia & 10 & 0 & 10 \\
129 & Valencian Institute for Social Action & 10 & 0 & 10 \\ \hline \end{tabular}  
* N\({}_{\text{T}}\) is the number total of procedures collected from the call for tenders with all the documentation for the analysis; \(\text{N}_{\text{B}}\) is the number of procedures from the building subsector, and N\({}_{\text{C}}\) is the number of procedures from the civil engineering subsector.  
\end{table} 
Table 1: Contracting authorities of the study sample with more than 10 procedures. Under Spanish public procurement regulations, there are several types of legal requirements that affect the time and complexity of the process, and a distinction is made between ordinary, urgent, and emergency processes. In the sample, 78.3% of the cases were processed under the ordinary procedure, whereas 21.5 % used the urgent procedure, and just 0.2% used the emergency procedure. Another characteristic of the tendering process is the type of procedure.