081E0171

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ADMINISTRATIVE & TECHNICAL DATA
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Borehole drilled in framework of RESPONSE project for installation of groundwater monitoring well (2 m filter).

GSB ID: 081E0171
RESPONSE ID: ZIL-06
Location: Adjacent to Woods Cemetery, Verbrandemolenstraat, Zillebeke (Ieper)
Date: 05.09.2018
X: 47631.767
Y: 169000.505
Z: +40.595 m
Total depth: 2.50 m
Groundwater level: c. 2.00 m
Describer: Jan Walstra, Geological Survey of Belgium

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LITHOLOGICAL DESCRIPTION
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0.00 – 0.05 m
Dark brown, very humic, loamy fine sand; tree roots

0.05 – 1.00 m
Light greyish-brown loamy very fine sand (loamy intercalations); orange Fe-oxidation spots; large piece of rounded charcoal (2 cm) at c. 30 cm

1.00 – 1.40 m
Light yellowish-grey slightly loamy fine sand; Fe-oxidation spots

1.40 – 1.80 m
Light beige-grey slightly loamy fine sand; at base (c. 175 cm) dark reddish-brown spots and silex gravel; non-calcareous

1.80 – 2.40 m
Light greyish-brown clayey very fine sand; some silex gravels; very calcareous at 1.80-1.90 m, below non-calcareous

2.40 – 2.50 m
Light greyish-brown sandy clay; very sticky

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STRATIGRAPHICAL INTERPRETATION
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0.00 – 0.30 m: reworked
0.30 – 2.40 m: Quaternary eolian cover sands & loam
2.40 – 2.50 m: Quaternary or clayey section in Tielt Formation?

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GROUNDWATER LEVEL
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Measurements sounding device, below ground surface
5.9.2018: -2.00 m
19.12.2018: -1.53 m