Blenheim Stormwater Strategy - Action Plan 5 Schedule 4 – Receiving Environment Actions # Action Priority Timeframe Indicator 2b Develop a risk-based framework to managingland use and stormwater contaminants. High Short 2c Identify high risk sites based on criteriadeveloped in 2B and develop an auditing and High Medium action program for high risk land users to improve quality of discharges from these sites. 6a Map riparian margins along existing streams,and identify areas where future riparian Medium Medium margins should be protected or enhanced, including for flood storage, ecological, access and water quality objectives. 6b Avoid piping or channelling stream channels,including first order streams. High Ongoing 6c Maintain sufficient water flows in streams tosupport aquatic life, with a particular emphasis Medium Ongoing on maintaining baseflows. 6d Avoid constructing stormwater qualityimprovement devices ‘on line’ within perennial High Ongoing watercourses, and where there is on-line flood attenuation, ensure fish passage is provided. 6f Any instream works/structures to provide forfish passage. High Ongoing 7a Develop specific guidelines on dewateringtechniques for construction projects. High Short 7b Maximise the use of appropriate stormwaterquality control measures at source for new High Ongoing industrial and commercial development. 7c Encourage/require good housekeepingsystems on existing commercial and industrial High Ongoing sites. 7d Apply industry specific Codes of Practice,which include environmental management Medium Medium procedures and for major transport corridors. 7h Until such time as monitoring shows otherwise,Council will not require point Low Short source/stormwater treatment from existing residential. 11c Promote the use of stormwater methods thatminimise, retain and treat direct stormwater High Ongoing runoff. Beca // 28 May 2009 4260171 // NZ1-1630756-12 0.12 Page 123