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• ATTACHMENT 4 <br /> • <br /> • <br /> SOIL-GEOLOGY 0 <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 /> faugavom , i r •'.,�•r ':..., SOIL ASSOCIATIONS <br /> • <br /> t it <br /> Y ,C. d i-1. ' Suitability for Development <br /> P� " <br /> Ai 3 t, <br /> �+t��`+�.��J J� b`! CgNgtTif2eAL <br /> 1 <br /> o� ,It <br /> isi;tt. ec, • ti. t <br /> 11. .art. r�'i �t jf �t `.-:*" t t era c.'ti.{ ,: <br /> 4 •a�F,.n ,y�' <br /> 1 _.Y' '' ♦ WAY j 74`ft i1."7 ,P..7 n' <br /> • 4 .ln t "Y y . r `Yi+,E•iiii.5n°.ii W�r7�•"` a <br /> O �L'74, a t".`-> t',16&,: 1e tif44.64W1.11::;:,Lr1.:' 77:)'i�"fq., 7.r e„ Cif J 9 i :a.1 M•i'�4 <br /> XIILIL ii MT ssiasiagiii 44,, � r,1,k J�i <br /> =At R Wits :.'!rn` 'd'- + �4 <br /> .`?i ' • .":• "*" '.l <br /> V.. <br /> UTILIZATION SLAND ILIZATION POTENTIALS OF THE BALTIMORE REGION <br /> BASED' ON NATURAL CRITERIA;Baltimore: Regional Planning Council, December, <br /> 1970. <br /> 89 <br />