9331 18TH AVE W SITE DEVELOPMENT 2018-01-02 MF Import

11/��/1003 16:3D 42577804p9 THE IdCIJAUGHT0IJ GROUP Major Maintenancu; Sedlment RemovaUCartridye Replacument PAGE 10 Depending on the configuration of the particular syslem, a worker may be required to enter the vault to perform some tasks. If vault enlry is required, OSI-IA ruies for general con(ined space entry must be followed. Filler carltidge replacement chould occur during dry wealher, and it may be necessary to plug the filter inlet pipe if base tlows exist. Standiny water present (n the vault sfiould be regarded as polluted and should be contained during lhis operation by lemporarily capping the rnanifold conneclors. Replacement cartridges will he delivered to the site by one or two utility workers, dopendiny on (he particular unil, ancl a liauling truck operator. Informalion conceri�ing i�ow to obtain Ifie ropla�ement carlridges is available fmm Stormwaler Management Inc. warniny: In the case of a spill, the worker should abort maintenance activities until lhe proper guidancQ is obtained. Notify the local hazard control agency and Stormwater Management Inc. � immediately. To conduct cartridye replacement and sediment removal mainlenanc�: 1. If applicable, sei up safety equiprnent to protect pedestrians trom fall liazards due to upen vault doors or when work is being done near roaclwa��s. 2. Visually inspect the exlernal condilion of the unit and take nutes concerning defects/problems, 3. Open the doors to the vault and allow the system to alf out for 5-10 minutes. 4. Withoul entering iho vault, give the inside of the unit, including components, a general condition inspeclion. 5. Make notes about the exlemal and intemal condition of lhe vault. Give particular attenlinn to recordiny lhe level aF sediment build-up on the floor of lhe v�ull, in the forebay, and on top of the Internal compononts. 6. Remove large loose debris and tresh using a pole with a grapple or ne( on the end. 7. Usfriy a boom, crane, or other devlce (dolly and ramp), offload the roplacement cartridyes (150 Ibs, each) and set aside. 8. Using an appropriate sling, aftacli the cable from tl�e boorn, crane, or tripod to the cartridgo beiny removed. Contact SMI for sp. ci(icalions on appropriate attachment devices. This aclivity may require that workers entel' lho vaull to remove the cartridges from lh� drainage system and place tiiem unde� lhe Vauit opening for lifting. Irnportant: Note lhat cartridges containing media ollier lhan ihe leaf inedia requlro unscrewing (rom iheir threaded conneclors. Talce care not fo damage the manifold wnnectors. This connector shouid romain installed in the manifold and capped if necessary (sea Fiyure •1 for carlridye dlagrarn). T 800.548.4667 F 800.561.1271 W wwvy,stormwaterinc.com a