Pulacayo Project Feasibility Study - Apogee Silver

Pulacayo 1 000 t/d Phase I Feasibility Study - NI 43-101 Technical Report
090644-3-0000-20-IFI-100
used the Environmental Quality Standard for Soil Resources and Criteria for Contaminated Soil
Remediation of the Republic of Ecuador.
The sample with the highest number of non-standard parameters, was obtained in the ELBA of
the dry season from an area of land in the area called Tajo, where there is the presence of mining
environmental threats in the area of sampling and also in the surrounding ones, that coupled with
the action of climatic factors (mainly rain and wind), generated pollution due to dragging of
material.
The parameters that are beyond the norm, recurrent in all samples and in all studies are arsenic,
zinc, lead and cadmium.
20.3.4 Sediment Quality
To evaluate the quality of sediments in the area of the Pulacayo Mining Project, 7 sampling points
were collected for studies of dry season and wet season respectively. To compare with the
reference values, Medmin used the Canadian Sediment Guidelines for the Protection of Aquatic
Life, because Bolivia does not have its own regulations.
The sample with the highest number of parameters beyond the Canadian standard is the one
taken from the Huanchaca River, with a total of 5 exceeding parameters. This situation is mainly
due to the presence of mining environmental threats in the sampling area and surrounding areas,
which together with the action of climatic factors (mainly rain and wind) generated pollution
thereof due to entrainment of material in the basin of the river aforesaid.
The parameters that are beyond the norm, more recurrent in all samples, in all studies, are
Arsenic, Lead, Zinc and Cadmium.
20.3.5 Drinking Water Quality (Drinking Water Distribution System)
The Pulacayo mining center uses surface water from different sources, such as the snow thaws
of the Cosuño mountain, the streams of Huayllas and Juskuni, these water sources are stored in
the dam Yanapollera, Huayllas pond and Juskuni pond respectively. The distribution of water in
the town of Pulacayo is made by plumbing and is done directly from the source.
To study the quality of drinking water two sample collection campaigns were made, one in the dry
season and one in the wet season, in order to evaluate and compare the data and get a better
interpretation of the results and variations throughout the year.
The results of quality of drinking water shows that the water quality is good in the ponds Huayllas
and Juskuni throughout the year, the latter being the best quality. The water quality of the
Yanapollera dam is low during the wet season; however, during the dry season this water
improves its quality but still presents contamination by whole coliforms contamination, reducing
its concentration relative to the sample obtained in wet season.
20.3.6 Condition of Flora and Fauna
The Pulacayo Mining Project is not within any protected areas of Bolivia. The characterization of
eco-biological components according to the classification by eco-regions and sub-Eco regions
(Ibisch et al. 2003), indicates that the project area lies within two major sub-Eco regions:
TWP Sudamérica S.A. Av. Encalada 1257 Of. 801, Santiago de Surco Lima 33, Perú (51-1) 4377473
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