Kerb and gutter plan to be exhibited

The "streetscape masterplan" for providing kerb and gutter to streets on the Peninsula is to be placed on public exhibition.

Five types of road edge treatment have been considered: "traditional" barrier type kerb and gutter, kerb only, flush-to-ground edge strips, roll-top kerb and "V" drain.

The plan lists each street, describing the proposed treatment, the road width, drainage constraints, "traffic facilities" and a preliminary costing.

The council was told that water sensitive urban design principles have been considered in preparing the plan.

The key principle was to hold stormwater runoff on the catchment to maximise infiltration and to minimise the discharge of dissolved chemicals and gross pollutants in stormwater runoff.

Strategies to be applied to the streetscape included constructing road carriageways as narrow as safe and practical to minimize impervious areas and to maximise permeable areas where the infiltration of stormwater may occur.

Car standing areas and possibly footpaths and driveways could be paved with permeable pavers to promote infiltration.

The area behind the kerb and gutter to the property boundary could be designed to briefly hold stormwater at shallow depths immediately after storms to promote infiltration.

The principles also included extensive tree planting within road reserves to hold additional stormwater on the catchment on the actual trees and to promote the natural process of evapo-transpiration.

Stormwater and drainage structures and outlets would be designed, where practical, to trap material ranging from silts to gross pollutants.

The Council has also decided to prepare a "street tree masterplan", submitting a list of recommended tree species to the council's Significant Tree Committee for comment.

Council decided to continue to investigate options for reducing the delay before the kerb and gutter is installed.

Council Agenda SF.037, November 27