According to the researches, the water level in the Goryn River (above the Baltic Sea level) fluctuated within a month from 192.69 m to 192.59 m in October, 2019 (the minimum value is 192.57 m; the maximum value is 192.69 m; the average is 192.62 m):

In October 2019, the temperature of water in the Goryn River varied from 13.8°С to 9.9°С during the month (minimum value is 9.9; maximum value is 14.1; average is 12.0):

In October 2019, the water flow in the Goryn River changed from 8.00 to 6.00 m³/s during the month  (the minimum value was 5.60; the maximum value was 8.00; the average was 6.63):

Note: The calculation  of the flow rate in the Goryn River includes the coefficient taking into account the presence of algae (the calculation is performed according to the appropriate method).

The total flow of the Goryn River amounted to 17.8 million m³ in October 2019 (October 2018 - 18.0 million m³) .

The water level of the reservoir-cooler (at the design level of 203.0 m above the Baltic Sea level)  varied from 201.58 to 201.57 meters during the month in October 2019 (the minimum value is 201.57, the maximum value is 201.59, the average - 201.57):

The mirror area of the cooling pond was 17.508 km², the volume of water was 92,480 million m³ at the end of the month.

In October 2019, the temperature of the water in the cooling pond varied from 16.1°C to 10.1°C during the month (minimum value is 10.1, maximum value is 16.6, average - 13.7):

The chemical analysis data of water quality in the reservoir-cooler (the pump station of auxiliary water) and in the Goryn River (near the Old Mill, Netishyn) were as follows in October:

Indicator	Cooling pond	Goryn River	MAC*
Solidity general, mg-equv/dm3	4.6	5.3	-
Calcium (Са2+), mg/dm3	58.1	78.2	180
Magnesium (Mg2+), mg/dm3	20.7	17.0	40
Sodium (Na+), mg/dm3	91.3	12.1	120
Potassium (K+), mg/dm3	9.2	5.1	50
Bicarbonates (HCO3-), mg/dm3	265.35	277.55	-
Carbonates (CO32-), mg/dm3	12.0	0	-
Dry residues, mg/dm3	504	314	1000
Sulfates (SO42-), mg/dm3	122.6	40.7	100
Ammonium, (NH4+), mg/dm3	0.159	0.206	0,5
Nitrates (NO3-), mg/dm3	0.16	3.34	40
Nitrites (NO2-), mg/dm3	< 0.020	0.162	0,08
Phosphates (PO43-), mg/dm3	1.042	0.283	0,25
Oil products, mg/dm3	0.010	0.022	0,05
Synthetic surfactants, mg/dm3	0.023	0.022	0,1
Iron, mg/dm3	0.104	<0.100	0,1
Permanganate oxidability, mgО/dm3	6.56	2.88	-
Dissolved oxide (O2), mg/dm3	8.69	7.77	>4

Notes: Standard MAC (maximum allowable concentration) is applied for water objects of industrial fishing (the Goryn River pertains to them) - «Rules of superficial water protection».

According to the data of chemical analysis results mentioned above, the water quality of the reservoir-cooler in October was better than the water quality in the Goryn River regarding some coefficients.

The main water balance components of Khmelnitsky NPP cooling pond are listed in the table below:

Component	October 2019	October 2018
WATER INPUT
- Outflows from the Hnylyi Rih River, mln. m3	0.269	0.290
- Horyn River water pumped to KhhNPP cooling pond by the makeup water pumping station, mln. m3	N/A	N/A
- Return water from the drainage line to KhhNPP cooling pond pumped by the leakage water pumping station, mln. m3	1.482	1.526
- Treated effluent water, mln. m3	0.348	0.333
WATER OUTPUT
- Return water to the Viliia River (Horyn River basin), mln.m3	N/A	N/A

Over October, emission of pollutants into the atmosphere was in compliance with the limits established for stationary pollution sources. Thus, the pollutant emission standards were not exceeded. The generalized information on pollutants emission is given below in the table.

Emission	October 2019	October 2018
Pollutants (without СО2), t	3.363	2.990
СО2, t	9.594	0.0

According to the data of ambient air composition research, the month maximum one-time concentration of oxide sulfur at the border of the protected sanitary area of KhNPP (in Neteshin) was <0.05 mg/m³ (<10.0 % from MAC), the maximum one-time concentration of oxide nitrogen was <0.020 mg/m³ (<10.0 % from MAC) in October.

Total precipitation was 10.6 mm during October. Based on the research of precipitation composition, pH value was 7.35 units.

The average month air temperature was «+9.9°С» (the maximum daily temperature was «+17.5°С», the minimum daily temperature was «+0.9°С»).