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1		-Research.WebHome
	1	+Environmental Surveys.Research.WebHome

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35	35	= Tertiary =
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37		-This category is used for the indication of a strange or [[special component>>doc:Soil.Special components.WebHome]] present in the layer. In this category many residual materials are present, for example calcium and wood. The fraction present can range from 5 to 50%. At 5% > 25% of the same material one can speak of a weak presence of the material. At 25%>50% of the same material one can speak of a strong presence of the material. Organic components are not accounted in the tertiary category. For other materials present the samples need to be of at least class QM4. Further below some components are explained.
	37	+This category is used for the indication of a strange or [[special component>>doc:Environmental Surveys.Soil.Special components.WebHome]] present in the layer. In this category many residual materials are present, for example calcium and wood. The fraction present can range from 5 to 50%. At 5% > 25% of the same material one can speak of a weak presence of the material. At 25%>50% of the same material one can speak of a strong presence of the material. Organic components are not accounted in the tertiary category. For other materials present the samples need to be of at least class QM4. Further below some components are explained.
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39	39	== AC 16 base/ AC 16-22 base ==
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57	57	== Asbestos ==
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59		-Asbestos is a term used to refer to six naturally occurring silicate minerals. All are composed of long and thin fibrous crystals, each fiber being composed of many microscopic 'fibrils' that can be released into the atmosphere by abrasion and other processes. Asbestos is used to strengthen ceramic creations and in walls or roofs of houses. When one suspect the presence of asbestos in a decayed wall or roof one needs to select the 'Asbestos suspect material'-field. More on asbestos-sampling and other specification can be found on the following [[page>>doc:Characteristics .Samples .Asbestos.WebHome]].
	59	+Asbestos is a term used to refer to six naturally occurring silicate minerals. All are composed of long and thin fibrous crystals, each fiber being composed of many microscopic 'fibrils' that can be released into the atmosphere by abrasion and other processes. Asbestos is used to strengthen ceramic creations and in walls or roofs of houses. When one suspect the presence of asbestos in a decayed wall or roof one needs to select the 'Asbestos suspect material'-field. More on asbestos-sampling and other specification can be found on the following [[page>>doc:Environmental Surveys.Characteristics .Samples .Asbestos.WebHome]].
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61	61	== Asphalt or bitumen ==
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111	111	A porous black solid, consisting of an amorphous form of carbon, obtained as a residue when wood, bone, or other organic matter is heated in the absence of air.
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113		-== [[Clay>>doc:Rock types.Sedimenten.Clay.WebHome]] ==
	113	+== [[Clay>>doc:Environmental Surveys.Rock types.Sedimenten.Clay.WebHome]] ==
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115	115	A stiff, sticky fine-grained earth that can be moulded when wet, and is dried and baked to make bricks, pottery, and ceramics.
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178	178	Detritus is particles of rock derived from pre-existing rock through processes of weathering and erosion. Detritus can also be dead organic material.
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180		-== [[Dolerite>>doc:Rock types.Igneous rocks.Extrusive igneous rocks.Dolerite.WebHome]] ==
	180	+== [[Dolerite>>doc:Environmental Surveys.Rock types.Igneous rocks.Extrusive igneous rocks.Dolerite.WebHome]] ==
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182	182	Dolerite is an igneous rock with a silica amount of 48 till 52%. The minerals present in dolerite are: olivine, plagioclase, biotite, amphiboles and pyroxenes.
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208	208	Gravel is a loose aggregation of rock fragments. Gravel is classified by particle size range and includes size classes from granule- to boulder-sized fragments. ISO 14688 grades gravels as fine, medium, and coarse with ranges 2 mm to 6.3 mm to 20 mm to 63 mm.
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210		-== [[Gypsum>>doc:Rock types.Salts.Gypsum.WebHome]] ==
	210	+== [[Gypsum>>doc:Environmental Surveys.Rock types.Salts.Gypsum.WebHome]] ==
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212	212	Gypsum is the common name for CaSO,,4,,·2 H,,2,,O and is present at places where the sea water is partly or totally dried up. These dried up areas form loose layers in between the other rocks. This type of rock is soluble in water and is formed close to halite and anhydrite. Gypsum breaks into rhombus shaped pieces.
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