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Medians Medians are proposed on only one street type; the Residential Boulevard. This street type is not currently recognized in the City's Zoning Code. It is expected that, if the boulevard- type street is approved as a classification, that it will be infrequently used - The Standards for medians on boulevard streets includes a standard for landscaping of medians, rather than paving. Specific discussion about maintenance issues resulting from this new standard will be included in the draft Local Street Plan. Cul -de -sacs While cul -de -sacs are not prohibited in the draft LSP, proposed standards for street connectivity will greatly reduce their numbers in future developments. Proposals in the LSP call for maximum street lengths of 600' instead of the existing 1200', requires more frequent connections to adjacent streets, and requires more stub streets to adjacent undeveloped property. The net result of the connectivity standards, should they be adopted, will be to encourage greater dispersal of locally- generated traffic by creating more route options. It should be noted, however, that reduction in the numbers of cul -de -sac and dead -end streets in favor of improved connectivity, could result in relatively more area devoted to street surface. Additional analysis will be done on this subject prior to public hearings on the plan. Access to Property This issue is not addressed in the LSP; driveway design as it relates to stormwater controls is an "on- site" issue. Preserve Natural Topographic Features Planing principle #6 indicates that "Local street design should be responsive to topography and other natural features ". Specific recommendations affecting topography include proposals to reduce maximum grade from 20% to 15 %, to allow cul -de -sac streets where topographic or natural feature constraints would limit feasibility of through street connections, and to allow sidewalks on one side of the street if topographic constraints are apparent. The criteria for layout of streets on the Proposed Local Street Plan Map included directions to the - engineering consultant who laid out the conceptual street alignments, to follow contour benches in hillside areas, and avoid stream crossings and natural feature disturbance to the greatest extent possible. We believe that the criteria was met. Select Appropriate Storm Drainage and Treatment Facilities The Local Street Plan will include a discussion of stormwater /street design coordination issues. The draft plan will include recommendations for use of inverted curbs in alleys (in conjunction with allowance for an asphalt paving standard rather than a concrete paving standard), and on local streets with low traffic volumes. Use of inverted curbs are likely to be limited to "access lane" classifications. — Design options involving the use of grassy swales on lower -order streets are not inconsistent with proposals in the Local Street Plan. Right -of -way widths proposed in the draft LSP would need to be increased significantly, in some cases, if grassy swales were included in certain street designs. Given that the DAC has not yet finalized its design standards recommendations, the LSP staff team feels that it would be inappropriate for the street plan to assume that wider right - of -way widths are necessary at this time. Amendments to ROW width standards will be _ �✓ necessary if grassy swales are ultimately accepted as a drainage design technique. •