Page 48 - Section4.2.1-SWPPPCutSheet-FiltrexxStormWaterBlanket

414 | Filtrexx ® Low Impact Design Manual | Version 8.0

rip rap armoring system.

7. Seed shall be thoroughly mixed with the GrowingMedia tm prior to application or surface applied to GrowingMedia tm at time of application. Seeding is only required for surface layer if Rip rap grouting is used to fll deep void/interstitial areas.

8. Rip rap grouting shall not be installed in areas of severe concentrated runoff fow, including channels and ditches.

9. Runoff diversion may be temporarily installed above/upslope from Rip rap grouting applications while vegetation is undergoing establishment.

INSPECTION & MAINTENANCE

Routine inspection should be conducted within 24 hrs of a runoff event or as designated by the regulating authority. If rilling occurs,

GrowingMedia ™ has washed, or vegetation does not establish, the area of application should be reapplied with Rip rap grouting. If failure continues, the use of runoff diversion devices may be considered until permanent vegetation is established. If diversion devices are used, runoff should be directed to areas that have been stabilized, infltration zones, or containment systems. Permanent vegetation practices should always be inspected for noxious or invasive weeds.

1. The Contractor shall maintain the Compost Grouting tm in a functional condition and it shall be routinely inspected until vegetation is established.

2. Rip rap grouting shall be maintained until a minimum uniform 70% cover of the applied area has been vegetated or as required by the jurisdictional agency.

3. Rip rap grouting may require regular irrigation during hot and dry weather, or arid and semi-arid climates to ensure permanent vegetation establishment.

4. Where a Rip rap grouting fails, rilling occurs, or vegetation does not establish the Contractor will repair or provide an approved and functioning alternative.

5. If Rip rap grouting is damaged by storm water runoff, installation of temporary runoff diversion devices above the Rip rap grouting may be required.

6. No additional fertilizer or lime is required for vegetation establishment and maintenance.