REPUBLIC OF BULGARIA
MINISTRY OF REGIONAL DEVELOPMENT AND PUBLIC WORKS
MUNICIPAL INFRASTRUCTURE DEVELOPMENT
PROJECT
ENVIRONMENT MANAGEMENT PLAN
/EMP/
STUDENA DAM
Sofia, December 2007
Studena Dam
Environment Management Plan
TABLE OF CONTENTS
I
INTRODUCTION
p. 3
II.
REVIEW OF THE INITIAL INFORMATION
p. 4
III.
ANALYSIS OF POSSIBLE ENVIRONMENTAL IMPACT IN THE EVENT
OF REHABILITATION OF STUDENA DAM
p. 7
MITIGATION MEASURES AGAINST THE ADVERSE
ENVIRONMENTAL IMPACTS FROM REHABILITATION OF STUDENA
DAM
p. 9
V.
MONITORING PLAN
p. 10
VI.
CONCLUSIONS AND RECOMMENDED STEPS FOR ASSURANCE OF
EMP PERFORMANCE
p. 11
VII. PUBLIC CONSULTATIONS AND DISCUSSIONS – DISCUSSION ON
THE POSITIVE AND NEGATIVE IMPACTS, CONSULTATIONS HELD
WITH ADMINISTRATIVE BODIES
p. 12
IV.
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І. INTRODUCTION
1.1. General
The government of R. Bulgaria requested the World Bank’s assistance in financing of activities related
to the Municipal Infrastructure Development Project which will help Bulgaria to comply to the
European Union’s directives on potable and waste water and the environmental protection factors in
the investment schemes that will be acceptable and eligible for financing from the European Union’s
Structural Funds and are not covered by other EU grants.
The Project, part of which is this Environment Management Plan /EMP/, encompasses the completion
of water-supply dams (Neykovtsi, Plovdivtsi and Luda Yana) where construction was suspended in the
last decade, and rehabilitation of the wall of an operating dam (Studena Dam), as well as rehabilitation
of the water supply system of six companies providing water and sewerage services (Dobrich,
Razgrad, Dobrich, Smolian, Stara Zagora and Targovishte).
1.2.
Purpose of the Project
The purpose of the Project is to ensure better water supply and responsible use of the water resources
underlying the state policy for sustainable development of the water sector. That objective is
completely in the spirit of the National Strategy of Bulgaria for Environmental Protection (2005 –
2014) that envisages „provision of good-quality water and sufficient water supply for all purposes”.
The purpose of the Project will be achieved by means of improvement of the conditions of potable
water supply in selected regions; ensuring the required quantity and quality of potable water; reduction
of losses in the water supply network; improvement of the reliability and efficiency of water supply
systems and facilities; provision for environmental requirements and regulations with respect to the
systems; enhancement of the operators’ management and operating capability, etc.
1.3.
Bank’s Requirements and Documents.
The overall environmental category of the proposed Project is A in line with Bank policies with
individual investments that belong to both category A (the proposed dam completion activities and
category B (the rehabilitation of water networks).
Based on the proposed Project Investments the following World Bank's safeguards policies and
procedures are triggered: OP/BP 4.01 Environmental Assessment; OP/BP 4.12 Involuntary
Resettlement; OP/BP 4.37 Safety of Dams; and OP/BP 7.50 Projects on International Waterways.
Furthermore, adequate protection and maintenance of ecosystems downstream of the dams should be
assessed during project preparation to determine the relevance of the OP/BP 4.04 Natural Habitats
and OP/BP 4.36 Forestry safeguard policies. Also, given the possibility that proposed water
companies might implement projects in cities with historic districts, the OPN 11.03 Cultural Property
safeguard policy might be triggered.
The following documents will be prepared by the Government of Bulgaria prior to project appraisal:
(1) Environmental Framework of the Project (EF) for all proposed subprojects; (2) Environmental Due
Diligence Report (EDR), including, in summary, assessment of the site conditions and assessment of
the possible environmental impacts related to completion and operation of the proposed three dam
sites; (3) Environment Management Plans (ЕМР) on investment in rehabilitation of the water
distribution networks in which the contract provisions for construction works will be specified related
to application of the technical standards and other requirements relevant to the construction phase. 4)
project Land Acquisition Policy Framework that will outline the process to be followed in case there is
land acquisition needed for the project; and (5) Social Due Diligence for the three dam sites that
presents an overview of the past land acquisition process carried out by the Government.
1.4.
Role of the EMP
The present Environment Management Plan was developed by a Consultants Team by assignment of
the Ministry of Regional Development and Public Works (MRDPW) and contains a Main Part,
Explanatory Part, Contract Provisions /Annex1/ on environmental protection, Environmental Impact
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Mitigation Program /Annex2/ including appropriate environmental protection measures that will help
to mitigate the negative impacts arising from rehabilitation of the Studena Dam and the attendant
costs, as well as an Environmental Monitoring Program /Annex 3/, pointing out to the parties in charge
of the implementation of that program, their obligation to ensure adherence to all provisions related to
environment and to the correct implementation of all environmental protection measures. The
Monitoring Plan includes information on the inspections in the course of realization, internal and
external monitoring and assessment, as well as a reporting system. The Plan presents cost estimates of
the environment management measures and the time schedule of their performance.
II. REVIEW OF THE INITIAL INFORMATION
2.1. Main Data on Studena Dam
Rehabilitation of the dam wall of Studena qualified for financing with funds from the loan granted by
the World Bank after assessment of the dam condition and its role in supplying the required quantity
and quality of potable water for the town of Pernik.
Studena Dam is in the valley of the river of Struma about 0,5 km upstream of the village Studena and
15 km upstream of Pernik, Sofia District. The dam was built mainly for the purpose of regulating the
water of r. Struma and its tributaries, the rivers Mutnitsa and Kladnitsa for potable and service water
supply, for irrigation in the region of Pernik, power generation and protection of arable lands
downstream of the dam wall from floods.
The dam regulates the water from its own water catchment area, and in addition the water from
headrace tunnels “Vladayski” and “Palakariyski”.
The Studena Water Power Works include: dam wall with spillway and stilling basin, bottom outlet
with stilling basin, intake tower, penstock, power house, diversion and headrace tunnels.
Dam wall
The dam wall, built over the period 1950-1953 after the design of “Energohydroproject” is a massive
Noetzli type saddle-dam. The dam fill consists of 26 concrete blocks. The low blocks at the two sides
of the dam are solid.
In the abutment of the upstream batter, there is a tooth with maximum depth in the river bed, reaching
elevation 775. A grouting gallery runs in the lower part of the tooth. From there, a single-tier grout
curtain is made. The curtain reaches 22 below the foot of the wall.
The main parameters of the dam wall and the reservoir are:
Dam wall type
Maximum height
Foundation width
Crest length
Crest width
Buttress width
Total concrete volume
Concrete brand
Total storage reservoir:
- at spillway elevation
- at roller gate elevation
Unavailable capacity
Water catchment area:
- area incl. diversion systems
- mean altitude
Mean annual influx
Area ponded up to elevation 840
Crest elevation
Elevation at balustrade
Elevation at highest operating water level (HOWL)
concrete saddle dam
55 m
53 m
259 m
7,00 m
9 m
125 000 m3
В 9 and В 11
20,62.106 m3
22,22.106 m3
1,30.106 m3
144,30 km3
1255 m
58,22.106 m
1416 dca
845,00
846,00
843,00
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Elevation at highest water level (HWL)
Elevation lowest operating water level (LOWL)
Elevation at lowest water level (LWL)
Environment Management Plan
843,30
816,00
813,00
According to the applicable “Hydro-Engineering Facility Classification” the dam wall is of the 2nd
class. It is situated in a region of 8th degree seismicity.
Spillway
The spillway is a front-side profile built upon four central blocks of the wall. It consists of three
overflow bay with total overflow width 22,80 m. After revision of the high flood estimates, the
overflow body was built over with bulkhead gates. It is designed to let through a retention flood
amounting to 250 m3/s with probability of occurrence coefficient Qp 0,1% at overflow height 3,30 m.
The spillway chute is situated on the downstream batter surface. The stilling basin is of a disspiating
type.
Bottom outlet
A bottom outlet has been built for draining of the dam in emergencies – two Ø1000 mm steel pipes.
Each pipe can drain the lake in 30 days. The water flows out into a rectangular stilling basin between
the buttresses and, through a side weir, enters the spillway stilling basin.
Intake tower
The intake tower is a vertical cylinder situated on the right-hand slope. Water intake takes place
through five levels at 5 m intervals.
Penstock
The penstock consists of a tunnel with diameter 1,60 m, with 0,30 cm thick reinforced-concrete lining.
At 33,50 m from the tower, the tunnel extends into a  1100 mm steel pressure pipeline, with length
280 m.
HPP Studena
The hydro-power plant (HPP) includes two horizontal-shaft Francis turbines, for a total capacity of 2
m3/s, 780 кW. It can operate at fall heights varying from 25 to 51 m.
Diversion Tunnel
The water from the discharge channel of HPP Studena is directed through a diversion tunnel with total
length 8 455 m. Seven siphons with total length 2 355 m have been built along the tunnel route to
Pernik.
Headrace Tunnels
The following two gravity-flow conduits have been built for additional water feeding of the dam
beside its own water catchment: the “Vladayski” tunnel with water catchment area 32 m2, collecting
water from the north-east part of Vitosha mountain with main water intakes on the rivers Vladayska
and Rudarska. The length of the tunnel is 13400 m, its throughput capacity - up to 2 m3/s, and 8
captations. In an year with average precipitations the tunnel feeds about 15.106m3 of water in Studena
Dam. “Palakariyski” tunnel collects water from the river Palakaria and the upper parts of Vitosha, with
water catchment area 8,87 km2. The tunnel length is 8,800 m and throughput reaching 0,9 m3/s. It can
feed 3,63.106m3/year of water to Studena Dam.
Ponding of the dam started in 1954. That was also the time of the first observations and measurements
of processes taking place in the dam wall – infiltration and water rise since 1954, and strains since
1955. A rich experience was accumulated over an operation period exceeding 50 years from
observations of the dam wall behavior.
2.2. Management and Operation of Studena Dam
The facility is managed by Water and Sewerage Company W&S LLC of the town of Pernik.
The maintenance and operation of Studena Water Power Works (WPW) consist of the following main
activities:
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Measurements and inspection of the dam and related facilities
The technical condition of the wall is monitored by means of inspections and measurements using the
installed Control and Instrumentation (C&I) System. Full and operative measurements of current
phenomena – displacements, strain, filtration, movement of cracks and joints, temperature variations,
water level changes, etc. – are carried out.
Displacements are detected at measurement points on the dam crest, in the buttress foundations, in one
reference point on the intake tower, as well as by plummets and measurement of cracks and joints.
Full geodetic surveys are performed once in a month.
The operative measurements include vertical displacements once a week, and horizontal displacement
twice a week.
Maintenance and repair
Maintenance is carried out, in conformity with the organization schedule, of: the two bottom outlets,
the spillway caissons, the intake tower adits, the penstock from the intake tower to Studena HPP
consisting of tunnel and steel pressure pipeline with its shutting devices (follower-ring valve and
throttle valve, and expansion joints for compensation of temperature deformations), of the Studena
HPP in an operating water supply mode, Vladayski headrace tunnel and its water intakes, Palakariyski
headrace tunnel and its water intakes.
The Water and Sewerage Company W&S LLC - Pernik produces annual reports, and every three years
independent experts make analysis and assessment of the dam condition. Their report is reviewed by a
Technical Expert Board of the Ministry of Regional Development and Public Works (MRDPW). All
these 50 years the dam operated without any variations in its operating mode.
2.3. Condition of Studena Dam
Upon the experts’ visit to Studena Dam on 05.09.2007, the following was found: heavily corroded
torcrete on the surface of the downstream batter; water penetrating into the wall through the expansion
joints; the expansion joints are damaged and need repair; the upstream batter waterproofing is badly
cracked and detached from the concrete surface in places; the wall crest is seriously damaged – the
reinforced-concrete balustrades are damaged along about 70% of the crest length, sidewalks and dripstones are crumbled, the paving is badly distorted which threatens the stability of the geodetic
benchmarks erected on the crest; the railings of the transition bridge to the intake tower are badly
damaged, with large holes in the structure and cannot serve to protect the staff from falling in the
water during dispatch of their duties; there are no data about the condition of the concrete or metal
structures in the underwater parts of the tower; visible stains from chemical suffusion of the in the
grouting gallery walls and deteriorated water tightness of the joints in the gallery; colmated (clogged)
drain holes and piezometers in the gallery due to which it is impossible to obtain true information
about seepage under the wall and the water rise along the wall-foundation contact surface.
The rehabilitation program for Studena Dam includes: injecting of the contact zone in the grouting
gallery, concrete injecting, checking the grout curtain, drain hole reconstruction, in-depth treatment of
the concrete with cement and polymer compounds, torcreting of the downstream batter, upstream
batter waterproofing, repair of the dam wall superstructure, penstock repair, repair of mud traps and
ventouses along the headrace tunnel, dissipation basin repair, river bed regulation, installation of an
I&C system.
The Water and Sewerage Company W&S LLC – Pernik has not developed a schedule for
rehabilitation and has not detailed the work types for repair works at each site. The access route to the
dam is defined (the part of Strouma Highway currently used, and a sector of the national road
network). Detailed elaborations will be produced after the financing arrangements are clarified.
Financing, machines and transport vehicles have been provided for each of the contemplated activities,
as well as software for the measuring and control instruments.
The rehabilitation of Studena Dam will be performed only on the dam wall from stages used for its
operation (at the dam crest, below the downstream batter and at the power house). The rehabilitation
works will not affect the bordering areas. Cutting of ligneous vegetation or disturbance of habitats,
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etc., are not necessary. The environment around the dam was developed thanks to phased recultivation
since 1953. The dam (the lake tail) is situated outside the boundaries of Vitosha Natural Park included
in Natura 2000. The Hunters & Anglers’ Association is performing fish stocking at 1000 m from the
dam on the basis of granted permit.
(Appendix: Dam situation, layout of drain boreholes 1:1000, C&I layout plan, intake and diversion
facility cross section, photo)
III.
ANALYSIS OF POSSIBLE ENVIRONMENTAL IMPACTS IN THE EVENT
OF REHABILITATION OF STUDENA DAM
The financing project for rehabilitation of Studena Dam covers rehabilitation of the dam wall and the
related facilities.
3.1.
Positive Impacts
The positive impacts are related to a basic property of dam walls, their “longevity”. With the
performance of repair operations, the design parameters of facilities are restored, and their safe
operation under normal, extreme and accident conditions is secured for a long service life. The dam
wall is upstream of the village Studena and Pernik, therefore the rehabilitation works guarantee also
the population’s safety in emergencies, as well as uninterrupted potable water supply to Pernik which
is extremely important for the health and quality of life of its residents.
3.2.
Negative impacts
The possible negative impacts due to rehabilitation of Studena Dam can be considered for the time of
construction only. It will be performed outside the settlements in an anthropogenically affected
territory (only at the dam itself and its facilities).
Organization of repair operations
At Studena Dam, there are ready service bays at the downstream batter toe, the dam crest and along
the penstock, that will be used during the rehabilitation. The water supply to Pernik will not be
disturbed with the exception of the upstream batter repair – placing of waterproofing, for which a
special organization plan and technology have to be developed, as well as coordination with Danubian
Area Basin Directorate in Pleven;
3.3.
Negative impact on the environmental components and factors during construction
3.3.1. Atmospheric Air
The repair operations (part of which will be on the dam bulk, others on the crest, stilling basin and
downstream batter (torcreting)) will generate dust and rebounding particles of the torcreting material.
There will be air pollution solely at the work site, so precautions and protection devices for the
workers have to be adopted. There will be no impact on the population. The transport vehicles with
building material and waste will not pass through Pernik or the village Studena, but will use the
Strouma Highway and an access road to the dam.
3.3.2. Water
All the effluents from the repair operations will be released into the stilling basin downstream of the
spillway where the large-size impurities will settle, after which they will be discharged into the
Strouma. The conditions that have been prevailing in the lower course during the 50-year long dam
operation will be preserved the same.
3.3.3. Soils
No soils will be disturbed during the rehabilitation works. All works will be done at the facilities, and
to some of them there are existing roads.
3.3.4. Geological Conditions
The purpose of the rehabilitation is to reduce infiltration under, around and through the wall whereby
the dam wall stability will improve and water losses will be limited.
3.3.5. Waste
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Insignificant quantities of waste will be generated during the repair operations keeping in mind that
the efforts will be aimed at full utilization of the building materials. All wastes are defined in
conformity with Regulation No. 3/01.04.2004. on waste classification. Studena Dam already has a
system for collection, transportation and disposal of the domestic waste and construction debris at the
Pernik Landfill, as well as delivery of waste oils for recycling to licensed firms. In the event of
generation of hazardous waste with code “*” a firm possessing a license for their treatment is
contracted.
3.3.6. Noise, Vibrations
The machines used for performance of the rehabilitation works: drilling machines, injecting
equipment, torcreting, concrete placing, produce noise levels 80 dBA – 92 dBA. The noise and
vibrations will affect the construction workers and machine operators, i.e., within the work site
boundaries. The vehicles can reach the main road without crossing any settlements. No areas with
“special noise level conditions” will be affected.
3.3.7. Flora
Since the rehabilitation works will be done at the facilities with available access to each of them, no
ligneous or herbaceous vegetation will be disturbed.
3.3.8. Fauna
No habitats will be destroyed during the rehabilitation works with the exception of upstream batter
waterproofing. The only specific decision will be that about protection of the ichtiofauna during the
repair of the upstream batter. It will result from the adopted organization plan and the waterproofing
technology. Due to the permitted fish stocking of the lake, the plan of upstream batter repair will
probably provide for performance of the construction work under water.
3.3.9. Landscape
The dam wall of Studena is a component of an anthropogenically influenced landscape after more than
50 years of operation. It is perceived as a natural part of the environment. Its architecture, recultivation
of disturbed lands, afforestation are proofs that dam walls can successfully fit into the natural
landscape. The rehabilitation works will improve the visual impression of the wall.
3.3.10. Health Factor
The rehabilitation of Studena Dam is localized within the work environment without affecting any
adjacent territories or settlements. Therefore, the impacts will be felt only by the workers.
During the construction works, a number of factors of the work environment and the labor process
may have an adverse health effect, namely:
Unfavorable microclimate. Work will go on for four seasons, inside the wall and, most of the time, on
the wall, therefore, in an overheating or overcooling microclimate. The overheating microclimate
bears a risk of occurrence of incidents such as a heat or sun shock. In the case of chronic exposure that
leads to dehydration, depletion of salts and microelements and heat-induced exhaustion. The
overcooling microclimate increases the frequency of colds, diseases of the skeletal-muscular and
peripheral nervous systems..
Noise. The drivers of heavy-duty vehicles will be exposed to excessive noise levels of the order 80-90
to 100 dBA. The people working on the “rigs” or “carriages” during injection and drilling works will
also be exposed to excessive noise. The excessive noise level has an adverse effect on the hearing
system and may result in development of professional hard hearing. Noise has an adverse effect on the
central nervous system, resulting in derangement of the sleep, development of neurosis-like
conditions, and is a risk factor for development of arterial hypertension.
Vibrations. The drivers of heavy-duty vehicles will be exposed to general and local vibrations. With
the new, modern technology they may remain within the permissible limits. The people working on
the “rigs” or “carriages” are also exposed to excessive local vibrations (for a comparatively short
contact). The excessive levels of general vibrations may result in damage of the vestibulary system,
the locomotory system, damages of the parenchimal organs and development of a vibration disease.
The local vibrations harm the sensory and blood circulation system of the fingers.
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Air pollution. The drivers of heavy-duty vehicles will be exposed to exhaust gases. No adverse health
effect is expected during work in the open.
Traumatism. The construction workers engaged in excavation and erection works, the work of
“climbers” on the waterproofing, are at the highest risk of labor traumatism.
Physical strain. In spite of the machines available for most of the construction works, part of them still
require physical strain, lifting and carrying of excessive loads. Another adverse factor in many of the
works is that they have to be performed in an unfavorable position and with considerable static stress
on the body and limb muscles. That results in microtraumas, diseases of the locomotory system and
the nervous-muscular system.
During the construction works, the factors of the working environment may have certain impact on the
workers’ health. The effect will be temporary and, if measures for protection of workers’ health and
safety are adopted, minimal.
The repair operations will have no adverse health effect on the population.
3.3.11 Common Heritage
There are no historical monuments in the vicinity of the dam. Building materials will be supplied from
industrial zones (possibly from the village Studena or Pernik) outside the boundaries of any
settlements connected to main roads and to the national road network. Along the course of the
Strouma, there are no monuments of common heritage that can be affected during the prospective or
future operation of the dam (the dam has been operated for 54 years). There are no declared
monuments of cultural heritage in Studena or in Pernik.
All construction work impacts are localized on the construction sites. They are temporary, short (only
for the time of construction), direct, without a cumulative effect.
After completion of the rehabilitation of Studena Dam its operation will not be a source of
environmental impact different from the previous one. Its operation will continue according to the
work schedule followed so far, while the rehabilitation will provide to the operator, the Water and
Sewerage Company W&S LLC – Pernik, opportunities for improvement of the facility management,
and hence – of the dam and reservoir operation.
IV. MITIGATION MEASURES AGAINST THE ADVERSE ENVIRONMENTAL
IMPACTS RESULTING FROM REHABILITATION OF STUDENA DAM
The present EMP contains measures for mitigation of the negative environmental impact that will be
implemented in the course of project performance:
4.1. Discharge all waste waters into the stilling basin downstream of the spillway for settling before
releasing them in the Strouma;
4.2. Develop a special organization plan and technology for waterproofing of the upstream batter of
Studena Dam;
4.3. Waste from the repair operations shall be treated in conformity with the Waste Management Act
requirements;
4.4. Monitor the technical condition of the building machines and transport vehicles for oil leaks; In
the event of pollution, perform pollutant sequestration;
4.5. Prevent or minimize “idle running” of the machines;
4.6. Use the existing water piping and sewerage system at the Studena dam wall; construction
workers shall use the facilities of the dam – canteen, staff rooms, etc.;
4.7. In order to reduce the harm from unfavorable microclimate, the workers shall be provided with
work clothes appropriate for the season;
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4.8. In order to contain the impact of physical factors in the work environment, the workers shall be
provided with personal protection devices – dust masks, anti-vibration gloves, life belts, etc.,
depending on the specifics of work;
4.9. In compliance with applicable regulations (with a view to reducing the physical strain, overfatigue and development of skeletal-muscular diseases), introduce schedules of work and breaks
during the working days.
According to the Bulgarian legislation (Appendix: Regulation Acts) the use of aggregate materials,
concrete mixes and asphalt products shall be permitted solely to enterprises possessing the respective
licenses for their extraction and production.
With respect to waste, the provisions of the Waste Management Act shall be met at all phases of
construction.
The impact mitigation measures related to investments in rehabilitation will be included in the
Technical Specification to the Rehabilitation Contract. Contract support is a necessary condition
assuring that the Contractor will adopt all required environmental protection measures on and off the
site and to limit the damages and inconvenience to people that may arise from the construction works.
Through implementation of the indicated measures, the Contractor shall make sure that the air
emissions, surface run-off, treated waste water, etc., resulting from its activity do not exceed
the levels indicated in the applicable law (Appendix: Regulation Acts).
Preservation of the natural components is achieved through establishment of integration relations with
the anthropogenic landscape components which, at the same time, will result in improvement of the
visual aesthetic value of the environment.
One important prerequisite for successful performance of the rehabilitation measures is coordinated
action together with the local and municipal authorities and the competent bodies in charge of
environmental protection and public health.
With the approval of RIEW – Sofia, and whenever possible, 160 l/s is released from Studena Dam for
flooding of the river bed downstream of the dam.
V. MONITORING PLAN
The contemplated model of monitoring the implementation of the environmental impact mitigation
measures was adopted so as to cover all aspects and requirements in conformity with the law and good
engineering practice.
Monitoring and control during the construction phase:
The adopted form of monitoring (Annex 3) includes a specific description of the monitoring measures
and is designed to cover all aspects in the construction process (related to the adverse impact
mitigation measures proposed in the adverse impact mitigation plan) with the parameters to be
measured, methods to be applied, points of sampling, measurement intervals, concrete description of
the organizational structures and reporting procedures.
The data obtained from monitoring will be used to adopt adequate measures during the repair for the
purpose of protecting the workers’ health and lives. As required, RIEW-Sofia, RIPCPH, Danubian
Region BD – Pleven will be involved.
Monitoring and control during the operation phase:
The monitoring during operation shall be carried out in conformity with the Company’s approved
Own Monitoring Plan.
EMP Implementation organization and reporting:
Monitoring and reporting will be applied in full by the Contractor’s management. The Contractor shall
exercise everyday monitoring of the normal environmental practices by presentation of regular reports.
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These reports shall be addressed to the institutions indicated in the normative requirements and once in
a month – to the Employer /Engineer/. The Contractor shall appoint its specialist in charge of the
environmental aspects of the Project.
The Engineer auditing the process will report on the performance of environmental impact
mitigation measures included in the Technical Specification to the Contract; on the correct
understanding and application of EMP by the Contractor; on assurance of the relevant steps; on
keeping correct record of any discrepancies, on the conducting of briefing and training, emergency aid
measures, and shall evaluate and correct the Contractor’s reports.
The Engineer shall report on the EMP performance and progress to the Employer every month.
The respective government institutions will be involved in auditing of all environmental protection
and social measures and the progress on the Project by receiving regular reports in conformity with the
normative requirements.
The Project Management Unit (PMU) established at the MRDPW shall keep and store the
documentation required by law and by contract. On the basis of the Engineer’s reports and site visits
as required, EMP performance and progress reports will be presented to the World Bank every six
months.
Institutional Responsibilities in Implementation of the Environment Management Plan
Impact mitigation and
monitoring responsibilities
Reporting relations and
frequency
MRDPW (Employer)
RIEW – V. Tirnovo
RIPCPH
MOEW (IAE – depending
on whether the dam is
covered by the national
monitoring during
operation)
Contractor to the Engineer
(monthly);
The Engineer to MRDPW,
to RIEW /quarterly/;
PMU at MRDPW to the
Bank (every 6 months)
Decision making on EMP /on start of action,
expense authorization, completion/
Responsible institutions
Activities
and persons
Monitoring of EMP
Engineer Supervisor,
performance.
contact person appointed
by Employer /MRDPW/;
RIEW; MoEW;
RIPCPH
VІ. CONCLUSIONS AND RECOMMENDED STEPS FOR ASSURANCE OF EMP
PERFORMANCE
The Environment Management Plan is in conformity with the requirements for assuring normal
operation of high-risk infrastructure elements such as dam walls.
According to the developed Environmental Impact Mitigation Program (Annex 2) and Environmental
Monitoring Program (Annex 3), the Contractor is not required to provide additional facilities (for
performance of the proposed mitigation measures) requiring significant expenses.
The recommended steps needed to ensure performance of the EMP are:
A.
Provide for funds for implementation of the adverse impact mitigation measures and EMP
performance monitoring by including it in the Technical Specifications to the Construction
Contract.
B.
Obtain the Contractor’s correct understanding of the steps and resources required for
environment management, the required steps and measures being evaluated and offered.
C.
D.
Discuss the EMP at preliminary clarification sessions.
After signing of the Contract, the Employer shall officially familiarize the Contractor with the
prevention and impact mitigation by means of the EMP included in the Contract and the
implementation of monitoring.
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The main problems, conclusions, recommendations and negative impact mitigation measures are
defined in conformity with the objectives set in the Terms of Reference.
In the longer term, with the proposed investment projects, EMP implementation and through
application of good engineering practices for optimization of the set of activities in the process of
producing and supply of drinking and washing water to the population, the objectives of responsible
use of water resources set in the government’s policy for sustainable development of the water sector
are achieved without any risk to the environment and with a beneficial effect on the life quality of the
population, which leads to the conclusion that the Project is beneficial.
VII. PUBLIC CONSULTATIONS AND DISCUSSIONS – DISCUSSION ON THE
POSITIVE AND NEGATIVE IMPACTS, CONSULTATIONS HELD WITH
ADMINISTRATIVE BODIES
In connection with the Municipal Infrastructure Improvement Project and more particularly, with
implementation of rehabilitation of Studena Dam funded from a World Bank loan, the Environment
Management Plan was announced to the public at the W&S LLC – Pernik and at the Municipality of
Pernik on 22.10.2007. Besides, consultations were held with administrative bodies as follows:

Pernik Municipality. A meeting with the Mayor of the Municipality Dipl. Eng. A. Georgieva.
The Town Council emphasized the extreme importance of contemplated rehabilitation works
for the reliability of water supply in the town (Appendix: Position Paper);

W&S LLC Pernik. Meeting with Dipl. Eng. Ivan Kovachev. W&S LLC is the proponent of the
repair operations and bears the responsibility for the normal operation of Studena Dam, for
which reason it supports them.
No objections or recommendations were received within the 14-days time limits set for such steps.
The EMP was promulgated on the web site of MRDPW and on Infoshop in Washington, the USA.
Studena Dam is one of the dams with the longest operation time in Bulgaria – 54 years, and the
above-discussed rehabilitation operations are indispensable.
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LIST OF ABBREVIATIONS USED
BD
Basin Directorate
W&S
Water Supply and Sewerage
TTM
Temporary Traffic Management
MDT
Main diversion tunnel
EU
European Union
HSLC
Healthy and safe labor conditions
EPA
Environmental Protection Act
IAE
Implementation Agency for Environment
IAE
Implementation Agency for Environment
C&I
Controls and Instrumentation
MIA
Ministry of Internal Affairs
MoEW
Ministry of Environment and Water
MRDPW
Ministry of Regional Development and Public Works
EIA
Environmental Impact Assessment
FAS
Fire and accident safety
SHP
Safety and Health Plan
RIEW
Regional Inspectorate of Environment and Water
RIPCPH
Regional Inspectorate for Protection and Control of Public Health
WPW
Water Power Works
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APPENDICES
1.
Situation of Studena Dam
2.
Layout of Drain Boreholes 1:1 000
3.
C&I arrangement
4.
Cross Section of the Intake facility and Pressure Diversion Tunnel
5.
Photo
6.
Annex 1 – Contract Provisions
7.
Annex 2 – Environmental Impact Mitigation Plan
8.
Annex 3 – Monitoring Plan
9.
List of Regulation Acts applicable to the Project
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ANNEX 1
Contract Provisions
This Annex describes the environmental mitigation requirements to be followed by the Contractor and
measures to be carried out by the Contractor(s) related to environmental protection which will be
included in the performance Contract.
General
The Contractor shall adopt all measures to protect the environment on the construction site as well as
off the site, and to limit the damage and inconvenience to people and property due to pollution, noise,
and other consequences of its acts. The Contractor’s activity shall be in conformity with the
requirements of all Bulgarian laws and bylaws related to environmental protection.
The technology of work performance proposed by the Contractor shall be in conformity with the
Environment Management Plan. The Contractor shall submit an Environmental Impact Mitigation
Program and a program of monitoring the performance of the respective measures based on the
provisions in this Environment Management Plan /Annex2 and Annex 3 to it/, prepared at the
Conceptual Design Phase and included in the Technical Specifications of the Contract.
The Contractor shall make sure that the air emissions, surface run-off, treated waste water, etc.,
resulting from its activity do not exceed the levels indicated in the applicable law. The Contractor shall
provide the means, information, consumables, certified teams, tools and manpower needed for
efficient test runs (sampling) wherever required.
The Contractor shall nominate one of his senior staff members to be responsible for follow-up of the
implementation of the provisions of the environmental plan as well as for the guidance of the rest of
the staff and reporting to the Engineer.
The Engineer shall be in charge of monitoring and verification of the overall construction compliance
to the Environmental Impact Mitigation Plan and of the absence of any deviations from it or from the
Contract. The Engineer shall have the right to interrupt the Contractor’s work if the conditions of the
approved environmental plan are not met.
Permits
The Contractor shall be in charge of drawing up and approval of the documentation and site-specific
information: technologies and methodologies utilized by the Contractor; specification of basic
materials for potable water supply and of the natural resources to be used (quantity and quality): i.e. all
raw material, including gravel, fill, and bituminous materials as well as fuel and energy; specification
of final work output; list and characteristics of harmful substances generated by the Contractor in the
construction process, if any; ; investigation and obtaining of directions for disposal of humus and/or
spoil material and/or construction debris from the construction site; particular measures ensuing from
the climate conditions in the region of rehabilitation works; specification of water supply sources and
treatment of waste water; emissions from construction equipment and transport vehicles.
The Contractor shall make arrangements for regular collection and removal of the solid waste from the
construction site and construction camps to the agreed disposal site. Since the construction takes place
at the site of an operating dam the solid waste can be included in the Waste Management Plan of the
dam.
In the event of generation of hazardous waste bearing the code “*” the Contractor shall contract a firm
possessing a license for its treatment.
Protection of Ligneous Vegetation
The rehabilitation of Studena Dam does not affect any ligneous vegetation. It will be performed on the
upstream and downstream batters of the dam, in the grouting gallery and the penstock. Access is
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available to all facilities and the national road network will be used for transportation of materials and
waste to the disposal site.
Noise control
The Contractor shall follow all the existing laws and regulations concerning the noise control and
limiting. Due to the nature of rehabilitation, the noise is limited within the work environment.
The Contractor shall adopt effective measures both in management and technology to minimize noise,
such as: maintain the machines and plants used in good repair; idle running of vehicles and building
machines shall not be allowed. The equipment shall be concentrated on the work sites only.
Dust control
The Contractor shall follow all the existing laws and regulations concerning the mitigation of dust
impact on the environment in construction works and propose and follow measures for control of that
parameter. The Contractor shall submit and coordinate a plan indicating the proposed routes for
aggregate material or construction debris transport. The Contractor shall suppress the dust generated
during operation of the equipment, cover the transport vehicles delivering aggregate material, sprinkle
water at the sites and during earth works.
Deviation and Traffic Measures: Temporary Traffic Management Plan
The applicable Bulgarian regulation requires from persons performing construction or repair works to
undertake steps to design and apply a Temporary Traffic Management Plan (TTM). In most cases, the
Temporary Traffic Management Plan is prepared in advance as part of the Investment Project, and
delivered to the Contractor together with the Water Supply Detailed Engineering Design of the
rehabilitation.
The Draft TTM Plan shall be reviewed by the Republic’s Road Infrastructure Fund (considering that a
highway and a part of the national road network are used) as well as the control authorities of the
Ministry of Internal Affairs minimum 15 days before the commencement of construction. Where the
Plan is drawn up by the Contractor, besides the approval of the above-mentioned institutions, the
Engineer’s approval shall be obtained within 28 days prior to the commencement of the construction.
Where a Temporary Traffic Management Plan is prepared in advance as part of the Investment
Project, all activities related to its implementation will be known in advance before the date of
submission of the construction performance proposals and their detailed inclusion in the Bill of
Quantities will be possible. In the event that the Contractor will be in charge of preparation and
implementation of the TTM Plan, it can be included in the Bill of Quantities only as general items.
Soil Erosion
There will be no construction works that can cause soil erosion.
Materials
The Contractor shall meet the following general requirements towards the construction supplies used:
they shall be of an origin indicated in advance, established and meeting the normative requirements
shall be evaluated as complying with the substantial requirements to rehabilitation and meet the
Technical Specifications in conformity with applicable legislation; and shall be accompanied with
relevant documents (statements of compliance, certificates of compliance, test reports, etc.),
evidencing their conformity with the normative regulations.
Aggregate materials for backfilling (sand, gravel, rubble), beside the above-listed, shall be
accompanied by a certificate evidencing that the borrow pits by which they are supplied possesses the
needed license for their extraction.
At the construction site, materials shall be kept in the designated locations to avoid possible pollution
of soil, water courses, etc.
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Protection of Water Resources and Soils
The Contractor shall carry the full administrative and legal responsibility for any pollution of surface
waters and soils according to the existing legislation, caused by its acts. For the purpose all
construction effluents shall be discharged into the stilling basin below the spillway and then released
into the river.
The Contractor shall ensure that no oil products, fuel, lubricants, detergents, paint or other harmful
substances are introduced into the soil, streams and irrigation or basins.
Filling or service maintenance of any machinery or transport vehicles shall be restricted to the nearest
filling station. In the event that filling has to be performed on the construction site, the appropriate
devices shall be used. The discharge of oil and fuel onto open soils is prohibited. For prevention of
accidental oil leaks, the technical condition of the machines shall be checked every month. Without
overruling the above requirements, the Contractor shall submit to the Engineer an emergency action
plan for hazardous spills and leakage, subject for approval before commencement of the works.
The Contractor shall submit in writing to the Engineer the locations of the installations related to the
provision of water, fuel, construction mixes, drainage, etc., and the distances to the nearest water
supply, irrigation or draining facilities, particular green or protected areas. The above-said applies to
both the construction site and the construction camp for the Contractor’s staff.
The nearest existing toilets or chemical toilets shall be used in the construction sites or at the workers’
camps. The direct discharge of sewage from worker’s camps into any water basin is prohibited.
Health, Safety and Accidents
The Contractor shall undertake at any time all precautions required and relevant to securing the health
and safety of all persons that have the right to be on the construction site and near it, and adhere to all
applicable safety procedures, including fire and accident safety, safety of electrical installations, safe
operation of higher-risk plants, blasting and fire works etc.
The applicable Bulgarian legislation (Regulation No. 2 / 22.03.2004 on meeting the minimum
requirements for healthy and safe labor conditions during construction and erection works) requires
preparation of a Health and Safety Plan (HSF) for construction involving risks defined in the
Regulation at the investment project phase, providing for all necessary construction management and
performance measures guaranteeing its safe performance. According to the applicable regulation a
SHF shall contain: Organization Plan; Layout Plan; an Integrated project schedule of the sequence of
Construction and Erection Works (CEW); Fire and accident prevention and fighting plans and plans
for evacuation of the workers and persons present at the construction site; Safety and health measures
and requirements applied to performance of CEW, inclusive of specific-risk sites; A list of plants,
machines and facilities subject to control; A list of the persons in charge (with names, positions,
employer) of supervision and review of individual builders’ plans concerning specific-risk sites, and of
evacuation, drills and/or training; diagram of the temporary traffic management and safety in the
transport and evacuation routes and pedestrian catwalks and crossings on the construction site and
access roads; layout of the points on the construction site where two or more builders will work;
layout of the specific-risk points on the construction site; layout of the points of erection of lifting
equipment and scaffolding; layout of the points on of storage of building supplies and equipment,
temporary site workshops and waste containers; layout of the locations of staff rooms; layout of the
utilities; plan and operation schedule of the temporary artificial lighting on the construction site and at
work sites; diagram and type of disaster, accident, fire or emergency alarm devices, with a site
designed for first-aid provision. According to the same Regulation preparation of the SHF is assigned
by the Employer as part of the investment Project, and the Contractor is in charge of its application
and updating in the course of construction.
Provision, update review, or absence of a HSF plan does not relieve the Contractor of any
responsibilities to ensure the safety and health of its employees, subcontractors or any other persons on
the site, or of its obligations by force of the applicable Regulation pertaining to: risk assessment during
the construction; development and updating of safety & health instructions depending on the specific
conditions on the construction site by CEW types and in the cases required by the applicable
legislation; the provision of protective clothing and equipment in accordance with the regulatory
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framework; provision of initial and regular instruction on healthy and safe labor conditions (HSLC) to
the employees; defining, in written job descriptions, the senior staff’s (engineering managers, foremen,
etc.) responsibilities as well as the responsibilities of persons in charge of risk elimination in the
process of work, endowed with the powers and resources needed for that purpose; the provision of a
qualified officer as HSLC Officer/Coordinator who has specific knowledge of safety regulations, and
experience of safety precautions and who shall advise on all matters affecting the safety of workers,
subcontractors and supervising officers; the provision of safety maintenance of the facilities and
equipment (electrical and lifting equipment, building machines, transport vehicles, etc.) and their
continuous monitoring with a view to elimination of defects that might affect the employees’ safety
and health or the environment; adherence to Bulgarian legislation on fire protection and preparation of
a fire prevention and fighting plan subject to the Engineer’s approval; the provision of latrines in
conformity with the sanitary and hygiene requirements and fire and accident safety (FAS)
requirements; the provision of instruction on handling of various materials, storage and disposal of
used hazardous materials; the provision of collection, storage and transportation of waste and debris;
the provision and maintenance of access to all points on the site in a safe condition free of injury risk;
the provision of joint work of construction workers and free-lance employees, if any; the provision of
collaboration with the industries in the region of or near the construction site; the provision of first-aid
facilities for persons injured in an industrial accident, fire, disaster or incident; adoption of additional
measures for the employees working in the open in adverse weather conditions; good order and
cleanliness on the construction site;
The safety officer/coordinator appointed by the Contractor shall have the power to receive instructions
from the Engineer on matters relating to the health and safety of personnel on Site and the safe
conduct of site operations.
The Contractor shall send to the Engineer details on every accident as soon as possible after its
occurrence. The Contractor shall keep a log book and produce reports on people’s safety, health and
security as well as on damages inflicted on property as the Engineer may reasonably request.
Cultural Heritage: Historical, Architectural and Archeological
Not applicable.
Social Issues
The Contractor shall adhere to all labor laws applicable to the Contractors’ staff, including the laws
pertaining to its employment, health, security, welfare, emigration or immigration and will provide for
all its legitimate rights.
The Contractor shall demand from its employees adherence to all applicable laws including those
pertaining to labor safety.
The Contractor shall not disturb, without any need for it or in an inappropriate manner, the
community’s comfort. The Contractor shall adopt, at any moment, all precautions to prevent unlawful
or unruly behavior and violations of the order by or among the Contractor’s staff as well as for
preservation of peace and protection of persons and property near the Site against such behavior.
Beside the mitigation measures against the adverse impacts on the environment due to performance of
the Project listed in other subsections, the Contractor should take the following requirements into
consideration: The operations conducted shall be adapted to the uninterrupted operating mode of the
water supply system taking into consideration that Studena Dam is the only water source for Pernik;
interruptions scheduled by way of exception of water supply shall be conducted after notification of
the residents concerned; Alternative water supply shall be provided upon water supply interruptions
lasting longer than the one instructed by the Operator of the W&S system.
Supervision and Monitoring
Without relieving the Contractor of its obligation for permanent compliance control, the Engineer will
be in charge of the monitoring and verification of compliance of the overall construction work with the
Environmental Impact Mitigation Plan and of making sure that there are no deviations from it or from
the Contract.
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Payment
All costs associated with environmental protection will be considered as being covered by the overall
payments specified in the Construction Contract. All costs entailed in sampling and testing for
environmental purposes shall be deemed to be included in the prices and rates entered by the
Contractor in the Bill of Quantities.
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ANNEX 2. ENVIRONMENTAL IMPACT MITIGATION PLAN REHABILITATION OF STUDENA DAM
Impact on:
Impact Mitigation Measure
Place and time of
performance
Implementation
Funds
Person in
Charge
Control functions
performed by:
1
2
3
4
5
6
Monitor the technical condition of building machines and
transport vehicles
On the work sites;
permanently
No additional funds
are required.
The Contractor
The Engineer
Prevent or minimize “idle running” of the machines;
On the work sites;
permanently
No funds are
required.
The Contractor
The Engineer
Atmospheric Air
Use the existing water piping and sewerage system at the
Studena dam wall; construction workers shall use the
facilities of the dam – canteen, staff rooms, and chemical
toiletes as required;
Ensure discharge of all effluents to the spillway stilling
basin for their precipitation before releasing them in r.
Strouma
Water
Waste
Landscape
On work sites;
permanently
From every
construction site,
permanently
If chemical toilets
are required-acc.to The Contractor
the contract with the
maintaining firm
Included in the
contract cost
Develop a special plan of management and technology of
On the upstream
Included in the
placing of the waterproofing on the upstream matter of the
batter; during
rehabilitation cost
dam and coordinate it with the Danubian Region BD project
Pleven
performance
The requirements of the Waste Management Act shall be
On every work site;
Included in the
met and the organizational structure created during the dam
permanently
rehabilitation costs
operation shall be used
Monitor the condition of the building machines and
On work sites,
Included in the costs
transport vehicles for oil leaks; In the event of pollution,
national road
of machine fleet
perform pollutant sequestration;
network;
maintenance;
permanently
Sequestration cost
acc.to actual the
work volume
In order to reduce the harm from unfavorable microclimate, On every work site;
Included in the
the workers shall be provided with work clothes appropriate
permanently
rehabilitation costs
for the season;
The Engineer;
The Contractor
The Engineer, RIEW
The Contractor
MoEW, RIEW, Danubian
Region BD – Pleven, the
Engineer
The Contractor
RIEW, the Engineer
The Contractor
The Engineer; National
Road Infrastructurr
The Contractor
The Engineer
Studena Dam
Health Factor
Environment Management Plan
In order to contain the impact of physical factors in the On every work site;
work environment, the workers shall be provided with
permanently
personal protection devices – dust masks, anti-vibration
gloves, life belts, etc., depending on the specifics of work;
Included in the
rehabilitation costs
The Contractor
The Engineer
In compliance with applicable regulations (with a view to
reducing the physical strain, over-fatigue and development
of skeletal-muscular diseases), introduce schedules of work
and breaks during the working days
Included in the
rehabilitation costs
The Contractor
The Engineer
On every work site;
permanently
* Everywhere in this text Engineer means Consultant Engineer or any other expert who is appointed by the Employer and performs site
supervision.
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ANNEX 3. MONITORING PLAN
How shall the
parameter be
monitored?/ type of
monitoring equipment
When shall the
parameter be
monitored? (at what
intervals or
continuously)
Required Funds
/Cost/
Organization in
charge of Monitoring
6
7
Impact on:
What parameter shall be
monitored?
Where shall the
parameter be
monitored?
1
2
3
4
5
Once per each repair
operation and upon
report
Once per each repair
operation and upon
report
At regular intervals
during repair and upon
report
Noise and Vibrations
Noise level; dB(A)
On every work site
Express check by an
accredited laboratory
(IAE at MoEW)
Atmospheric Air
Dust, gas emissions
On every work site
Express check by an
accredited laboratory
Below the stilling
basin downstream of
the spillway
Accredited laboratory
for analysis of water
samples
Water
Pollution of the water in r.
Strouma (turbidity)
Protection of the ichtiofauna
At laboratory’s
price
IAE at MoEW; (upon
report); the Engineer
At laboratory’s
price
The Contractor, IAE at
MoEW; (upon report);
the Engineer
The Contractor,
Accredited laboratory;
the Engineer
The Contractor; the
Engineer
At laboratory’s
price
Depending on the design of waterproofing on the upstream side
Included in the
Wastes
Collection, temporary storage,
transportation and disposal
On every work site
and to the disposal
site
Monitoring by the
Contractor
Permanently
Health Factor
Provision of conditions for
protections of workers’ health
and life
On every work site
Monitoring by the
Contractor
Permanently
rehabilitation
cost
Included in the
rehabilitation
cost
The Contractor, the
Engineer
The Contractor, the
Engineer; RIWESofia, RIPCPH
* Everywhere in this text Engineer means Consultant Engineer or any other expert who is appointed by the Employer and performs site
supervision.
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REGULATION ACTS
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
Environmental Protection Act (State Gazette No.91/25.09.2002, amendments &
supplements as of 2007).
Waters Act (State Gazette No.67/01.09.1999, amendments & supplements as of 2007)
Biological Diversity Act (State Gazette No. 77/09.08.2002, amendments & supplements
as of 2007).
Pisciculture and Aquaculture Act (State Gazette No. 41/24.04.2001 amendments &
supplements as of 2006).
Waste Management Act (State Gazette No. 86/2003 amendments & supplements as of
2007).
Regulation on the terms and procedure for Performance of Environmental Impact
Assessments (Council of Ministers Decree 59/07.03.2003, amendment & supplement of
01.2006).
Forestry Act (State Gazette No. 125/1997, amendments & supplements as of 2006).
Act on Protection against Noise in the Environment (SG No.74/2005, amend. and suppl.
No.30/2006)
Air Purity Act (SG No.45/1996 amend. and suppl. No.105/2006)
Red Book of the Republic of Bulgaria, vol.2 – 1985
UN Convention on Preservation of the Biological Diversity (in effect in Bulgaria since
16.07.1996 – State Gazette No. 19/1999).
Order No. РД-272/03.05.2001 on the Categorization of Surface Waters in Water Bodies
or Parts of Them – MoEW.
Regulation No. 3/01.04.2004 on Waste Classification (State Gazette No. 44/25.05.2004).
Regulation No. 04/2/26.02.2004 on the Minimum Labor Health and Safety
Requirements for Construction and Erection Works (State Gazette No. 37/04.05.2004).
Council of Ministers’ Decision 122/02.03.2007 on Approval of a List of Protected Areas
for Protection of the Wild Birds and the List of Protected Areas for Protection of the
Natural Wildlife Habitats.
Water Supply and Sewerage Service Regulation Act, 2005.
Regulation No. 13/2004 on the Operation of Dams and Related Facilities MoEW, MH,
MRDPW.
Regulation No. 9/16.03.2001 of MH, MRDPW and MoEW on the Quality of Potable
and Washing Water.
MoEW Regulation No. 5/08.11.2000 on the Procedure and Method of Establishing the
Networks and Activity of the National Water Monitoring System.
MoEW Regulation No. 10/03.07.2001 on Granting of Permits for Waste Water
Discharge in Water Bodies and Establishing of the Individual Emission Restrictions of
Point Sources of Pollution.
Regulation No. 6 on Environmental Noise Indicators – MH, MoEW (State Gazette No.
58/2006).
Regulation No. 7/24.08.2005 on the Sanitation Requirements for the Health Protection
of Community Environment
MH, MoEW Regulation No. 14/1995 amendments & supplements as of 2007 on
Permissible Limit Concentrations in the Air of Settlements
Regulation No. 26/01.10.1996 (amendments & supplements as of 2007) on the
Recultivation of Disturbed Lands, Amelioration of Low-Productive Lands and
Utilization of the Humus Layer.
Hazardous Substance Handbook – MoEW, 2003.
Hydro-Engineering Facility Design Rates, Basic Principles, Civil Engineering and
Architecture Newsletter – issue No. 11/1985
Studena Dam
Environment Management Plan
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