Construction of Giresun Wastewater Treatment Plant  Tender Dossier Volume 3 Employer’s Requirements  Section 1 : Introduction and Existing Condition  6 of 11  Giresun is having a rugged apppearance in terms of landforms and mountains, valleys and steep coasts  occupy a large place. Giresun has a coastal line of quite narrow and low plains along the Black Sea  Coast and Giresun Mountains which spans between Kelkit Creek in the south forms the landforms.  The average height of those mountains rising in parallel to the coast is 2,000 m at 50-60 km inland  from the coast. The most important altitudes of Giresun Mountains going over 3,000 meters in some places are as  follows: Abdal Musa Hill (3,331m), Cankurtaran Hill (3,278 m), GâvurMountain Hill (3,067 m),  Küçükkor Hill (3,044 m), Karataş Hill on the Karagöl Mountain (3,107 m) and Kırkkızlar Hill (3,040  m).  Mountains surrounding the south of Giresun creates plains in certain places by descending toward to  north and to south.There are so many plateau above those plains at 1,750-2,200 meters elevations.The  main plains on the Giresun Mountain are Kümbet, Kulakkaya, Bektaş, Tamdere, Karagöl, Eğribel,  Kazıkbeli, Çakrak, Paşakonağı, Karaovacık and Sisdağı plains.  In many parts of Giresun province, especially in the northern part, the Upper-Cretaceous volcanic  facies lands occupy a very wide area. There are copper mines aorund Espiye, Yağlıdere, Görele.  Meanwhile, granite, granodiorite, quartz diorite bodies and veins are found in highlands at the south of  Dereli and Kovanlık Districts and around Doğankent.These are seen on the surface in some places in  the north of Şebinkarahisar. Coasts of the Giresun Province are in cliff coasts forms in many places.  Sandy beaches form between this steep and high coasts. Sea bottom in front of the coasts is not wide.  The sea deepens very suddenly in many places.  Giresun Mountains are serpentine part of Alpine mountain formation in Turkey and part of the Mesozoic-Tertiary old mountain chains. During the formation of the Giresun Mountains and in the  later period, curling, refractions and thrust have occurred; thick volcanic remains formed due to  volcanic events from time to time. In the meantime, large fractures have been occurred; particularly  seismic zone in the south of the province has emerged as an area of typical active fault. However,  other parts of the province are in the third degree seismic zone where harmless earthquakes occurred. .  Giresun Province is in the 1$^{st}$, 2$^{nd}$, 3$^{rd}$ and 4$^{th}$ degree earthquake zones. Giresun city center is under the  influence of the 4$^{th}$ degree earthquake zone.  1.3.3 Seismicity  1_Vol3_d4 3_Section 1_IntroExisting Condition_GIR_rev8 