Krasnodar GRES Project Volume I11 Environmental Assessment
Krasnodar GRES Project Volume I11 Environmental Assessment Krasnodar GRES Project Volume I11 Environmental Assessment
* These An earthquake closest to the Krasnodar GRES site occurred on November 12, 1954 with M =4.6-0.5 and the quake layer in the epicenter 6-0.5 points at a focus depth 17 km (14-21 km). The epicenter was located about 50 km to the south of Mostovskoy, within the area of the northern slope of the Main Caucasian Range. In the region of Krasnodar GRES site the shock intensity was estimated at 5-6 points. Thus, analysis of seismicity in the North Caucasus according to I.V. Ananin (1977) provides evidence that no earthquake epicenters directly in the region of the Krasnodar GRES had been recorded. No historical evidence of local shocks was found. In 1983-84, "Gidroproekt" Institute carried out special studies for defining seismic conditions in the region of the Krasnodar GRES site, including detailed studies on the materials provided by "Krasnodarneftegeofizika" (regional seismic prospecting work by MOB, OGT and KMPV in the region of "Gubskaya" and "Perepravnaya" sites, seismotectonic studies of the locality, decoding of space photographs, seismic prospecting by the method of refracted waves and recording of local earthquakes, explosions and composite waves by highly sensitive prospecting seismological stations "Zemlya"). investigations made it possible to define the location and parameters of zones of possible earthquake foci and correct the previously obtained values of computed seismicity for the site of Krasnodar GRES with due regard for local conditions: characteristics of seismic signals and angles of their approach, the effect of sedimentary stratum and seismicity of ground properties. Theses studies led to the following results: The Krasnodar GRES site is located approximately in the center of a single rather large (1570 km2) crustal block, confined to tectonic deformations of the 2-nd and 3-rd order: Cherkessky, Voznesensky, Koshekhablsky, Chugushsky and Mid- Labinsky fractures. Seismic conditions at the Krasnodar GRES site is dependent on earthquakes which can occur both in tectonic deformations, outlining the indicated block and large fractures of the I-st and 2-nd order, located in the radius of 100 km from the site. At the present stage of work, it is accepted that all these tectonic deformations are WHO zones. Observations with highly sensitive stations "Zemlya" show that the most active seismic WHO zones in the region under study appear to be those which are USAIDIKRASEIA/OFFICIAL/EIACH4B.DOC 3/26/96 PAGE 4-45
confined to Chugushsky and Voznesensky fractures, where a number of earthquakes of class 6-7 were recorded over the period of observation (November 1983 - March 1984) at minimum distances of 15-20 km from the "Gubskaya" site. These studies show that Mid-Labinsky fracture is a deformation of the 3rd order and is limited by the active Chugushsky deformation, and within this block, where the site is located, it does not extend, Seismic hazard stemming from this fracture is considerably lower (approximately by 1 point) than that of the more active zones listed above. The main power plant structures on the Krasnodar GRES site are situated on a pebble base with a low (20-25%) content of sandy filler. In terms of their characteristics these grounds pertain to the 2-nd grade and consequently the seismic effect of the defined WHO zones within the Krasnodar GRES site will not exceed 8 points for dry and flooded grounds. A sketch of the seismic zones in the Krasnodar GRES region is presented in Supplement 17. 4.3.1.3 Topography The Krasnodar GRES site is located on the piedmonts of the North Caucasus in the south-west of the Krasnodar region in the Laba river valley (left tributary of the Kuban river) 5 km to the south of Mostovskoy (regional center). Bus routes connect this region with the city of Maikop (50 km) and the territorial center Krasnodar (I80 km). A railway branch Labinsk-Shedok runs at a distance of several kilometers from the Krasnodar GRES site. Settlements Mostovskoy, Shedok, Perepravnaya, Zassovskaya and Kaladzhinskaya are large populated areas in this region. The main water artery of the region is Laba river 1.6 m deep and up to 70 wide. Upstream of the site the river is branched (Malaya and Bolshaya rivers), and downstream on the left the tributary Khodz flows into it. The feeding rivers are mixed, the surface runoff is formed primarily by the thawing of snow and glaciers in the northern slope of the Main Caucasian Range. Spring-summer floods and high water during the year are typical of the Laba river. The Laba and Khodz rivers pertail? to fish breeding water bodies of the I-st and 2-nd grade. PAGE 4-46
- Page 51 and 52: 3.2.7 Water Source The source of op
- Page 53 and 54: standards in addition to any design
- Page 55 and 56: 3.3.4 Estimated Plant Emissions Air
- Page 57 and 58: Adding a new double-circuit 220 kV
- Page 59 and 60: The summer is hot and long (it begi
- Page 61 and 62: Notes: 1. Previous meteorological s
- Page 63 and 64: 4.1 .I .4 Annual and Seasonal Preci
- Page 65 and 66: Months I I I I I I IV V V I VII Vll
- Page 67 and 68: During rainfall and fog the western
- Page 69 and 70: Years 1979 1979 1980 1980 1980 1980
- Page 71 and 72: 4.1.3 Air Quality Impact by Nitroge
- Page 73 and 74: Appendices 8 and 9 are indicative o
- Page 75 and 76: River Laba Malaya Laba Point Doguzh
- Page 77 and 78: a steady low water level which can
- Page 79 and 80: i, Section F, ' 1 m BS m m2 1 41 4.
- Page 81 and 82: Section 1 2 3 4 Sum i, m BS Q I m3/
- Page 83 and 84: Table 4.21 Average Annual Water Dis
- Page 85 and 86: River Site La ba Kaladzhinskaya La
- Page 87 and 88: Dimensionality 8 % mln. m3 8 O h ml
- Page 89: Table 4.29 Chemical Composition of
- Page 92 and 93: Sampling Date 14.V 15.VI 2.8 20.V 2
- Page 94 and 95: Table 4.34 Recorded Disposals into
- Page 96 and 97: 4.2.2.2 Thickness and Occurrence of
- Page 98 and 99: 4.2.2.4 The Regions of Groundwater
- Page 100 and 101: 4.3. I. 1 Stratigraphy In the Cauca
- Page 104 and 105: a 4.3.1.4 Relief In a geomorphologi
- Page 106 and 107: 4.3.1.5 Mineralogy The deposits of
- Page 108 and 109: 4.3.1.8 Frozen-State Regime Climate
- Page 110 and 111: Humic-gley soil constitutes 17% and
- Page 112 and 113: a reaches In terms of humus horizon
- Page 114 and 115: @ In terms of the leaching extent,
- Page 116 and 117: Form of Use Arable land Perennial p
- Page 118 and 119: @ River Laba Malaya Laba 4.4.1 Land
- Page 120 and 121: Name Administration of Mostovskoy 1
- Page 122 and 123: N 1 2 3 4 5 6 7 8 9 10 11 12 13 14
- Page 124 and 125: a The average annual increase of pl
- Page 126 and 127: Data on record keeping of ungulate
- Page 128 and 129: divided into separate massifs by th
- Page 130 and 131: a 4.5.2.1.3 Animal Kingdom The Cauc
- Page 132 and 133: the Southern slope. European minks
- Page 134 and 135: 4.6.1.3 Labor and Occupation Market
- Page 136 and 137: Total Disease of circulation organs
- Page 138 and 139: and waste with negative impacts on
- Page 140 and 141: Existing Environment Conditions Lan
- Page 142 and 143: 5.1.2.5 River Crossing by Transmiss
- Page 144 and 145: 5.2 Operation Stage Figure 5.1 is r
- Page 146 and 147: Maximum concentration of nitrogen o
- Page 148 and 149: Distance From the Power Plant, km 1
- Page 150 and 151: probability is 7.14 m3/sec and this
* These<br />
An earthquake closest to the <strong>Krasnodar</strong> <strong>GRES</strong> site occurred on November 12,<br />
1954 with M =4.6-0.5 and the quake layer in the epicenter 6-0.5 points at a focus<br />
depth 17 km (14-21 km). The epicenter was located about 50 km to the south of<br />
Mostovskoy, within the area of the northern slope of the Main Caucasian Range.<br />
In the region of <strong>Krasnodar</strong> <strong>GRES</strong> site the shock intensity was estimated at 5-6<br />
points.<br />
Thus, analysis of seismicity in the North Caucasus according to I.V. Ananin (1977)<br />
provides evidence that no earthquake epicenters directly in the region of the<br />
<strong>Krasnodar</strong> <strong>GRES</strong> had been recorded. No historical evidence of local shocks was<br />
found.<br />
In 1983-84, "Gidroproekt" Institute carried out special studies for defining seismic<br />
conditions in the region of the <strong>Krasnodar</strong> <strong>GRES</strong> site, including detailed studies on<br />
the materials provided by "<strong>Krasnodar</strong>neftegeofizika" (regional seismic prospecting<br />
work by MOB, OGT and KMPV in the region of "Gubskaya" and "Perepravnaya"<br />
sites, seismotectonic studies of the locality, decoding of space photographs,<br />
seismic prospecting by the method of refracted waves and recording of local<br />
earthquakes, explosions and composite waves by highly sensitive prospecting<br />
seismological stations "Zemlya").<br />
investigations made it possible to define the location and parameters of<br />
zones of possible earthquake foci and correct the previously obtained values of<br />
computed seismicity for the site of <strong>Krasnodar</strong> <strong>GRES</strong> with due regard for local<br />
conditions: characteristics of seismic signals and angles of their approach, the<br />
effect of sedimentary stratum and seismicity of ground properties.<br />
Theses studies led to the following results:<br />
The <strong>Krasnodar</strong> <strong>GRES</strong> site is located approximately in the center of a single rather<br />
large (1570 km2) crustal block, confined to tectonic deformations of the 2-nd and<br />
3-rd order: Cherkessky, Voznesensky, Koshekhablsky, Chugushsky and Mid-<br />
Labinsky fractures.<br />
Seismic conditions at the <strong>Krasnodar</strong> <strong>GRES</strong> site is dependent on earthquakes which<br />
can occur both in tectonic deformations, outlining the indicated block and large<br />
fractures of the I-st and 2-nd order, located in the radius of 100 km from the site.<br />
At the present stage of work, it is accepted that all these tectonic deformations<br />
are WHO zones.<br />
Observations with highly sensitive stations "Zemlya" show that the most active<br />
seismic WHO zones in the region under study appear to be those which are<br />
USAIDIKRASEIA/OFFICIAL/EIACH4B.DOC 3/26/96 PAGE 4-45
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