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ATTACHMENT 4
<br /> . 029
<br /> SOIL - GEOLOGY . - .
<br /> The geologic formation of the earth is important in determining
<br /> the appropriateness of development as well as its possible adverse effects on •
<br /> the natural environment. Knowledge of geologic conditions may alleviate
<br /> . special problems which developers may encounter, such as hard rock forma-
<br /> tion and conditions which affect the feasibility and.spacing of septic tanks.
<br /> Areas were categorized according to their soil conditions so
<br /> that special standards could be applied to potential problems. Four classifi-
<br /> cations were made: desirable (no problems), conditional, problematic,•and ,
<br /> undesirable. These, in turn, had been derived from a more detailed soil
<br /> association system with the following categories: slope, flooding, bedrock,
<br /> stability,erodability,permeability, pans and water table.5
<br /> In areas served by central sewer systems, soil associations are
<br /> • not factors in determining the relative intensity level of development. Ex-
<br /> cept in those areas designated as undesirable (which are included in Physio-
<br /> graphic Type 4), the soil-geology association may be used as a guide for
<br /> developers as to the type of problems which may be encountered in the
<br /> course of development. it is also useful as a means.of determining where
<br /> special standards should be applied to reduce erosion, floods and other
<br /> problems.
<br /> The following map illustrates soil associations in the case study
<br /> area.
<br /> •
<br /> d4 .
<br /> LIBERTY 1 is s• i?'' •+ .:..
<br /> RESERVOIR/.4. 2..i,;;,•:,1;:,: ..6:•, y, SOIL
<br /> `, '` '.•` L ASSOCIATIONS.
<br /> \\ �. .,,..A1::',:,.
<br /> Suitability for Development
<br /> •
<br /> , t.4 y..;kip: i
<br /> ..'.:,..:::.i,..„.. 4.+ RI CONDITIONAL
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<br /> r BCa1E M FEET - aCf'}.,, " °i 4 . K
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<br /> scACE IN NILES
<br /> •
<br /> r+" 1-70N -4'
<br /> &LAND UTILIZATION POTENTIALS OF THE BALTIMORE REGION
<br /> BASED ON NATURAL CRITERIA: Baltimore: Regional Planning Council, December,
<br /> 1970.
<br /> 89
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