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N CARTRIDGE TREATMENT TOTAL FLOW MINIMUM <br />Washington `l1 SIZE FLOW RATE CAPACITY DEPTH <br />G GPM / CFS CFS (FEET) <br />Q + _�' 12.00" 13.6/0.030 1.3 1.60 <br />GULD* <br />- - 16.00" 20.4/0.045 1.3 2.34 <br />00 0 STACKED 12.00"+ 12.00" 27Z / 0.061 1.3 3.06 <br />co 2X TRAFFIC RATED STACKED 18.00'+12.00- 34/0.070 1.3 3.07 <br />� <br />u. SOLID PLATE COVER. <br />D TRAFFIC RATED '- CONCRETE APRON/COLLAR REQUIRED, <br />INLET GRATE. j BY OTHERS. SEE NOTE 6. <br />I <br />I <br />2X PerlcFllter"' � <br />CARTRIDGE. 2X FLOW THRU + <br />TUBES. L <br />FLOATABLES WEIR. <br />INLET, I <br />SEE PLAN VIEW r J -yrs PRIMARY BYPASS BETWEEN 5 <br />& NOTE 3 FOR FLOW THRU TUBES. <br />LOCATION OPTIONS <br />& SPECS. FLOW THRU TUBES --t - <br />INTO FILTER CHAMBER. <br />DRAIN DOWN - } <br />DRAIN DOWN DEVICE. — OUTLET, (VENTED) DEVICE. <br />SEE PLAN VIEW & NOTE 3 DETAIL A <br />FOR LOCATION OPTIONS & SPECS. INLET / BYPASS ASSEMBLY <br />ISOMETRIC VIEW & DRAIN DOWN SCALE. 1.5X <br />Notes: <br />2X TRAFFIC RATED <br />1. All steel utilized in fabrication and SOLID PLATE COVER. CONCRETE APRON/COLLAR, <br />shall be 1/4" plate per ASTM A36. TRAFFIC RATED SEE NOTE 6. <br />INLET GRATE. 1 <br />2. PerkFilterT Catch basin shall be supplied <br />with traffic rated (FE20) bicycle -proof gratesINLET c c r I <br />and solid plate cover. LEE <br />SEE NOTE 3. Atmtm <br />3. Inlet pipe(s) may enter device on any of three I - iss o o 26.36" <br />sides of the inlet chamber. Outlet pipe may exit <br />f J <br />on any of all four sides. All pipe is O 12" maximum. �-- - - - <br />7 OUTLET. (VENTED). <br />4. Inlet chamber shall be supplied with a L J 2X PerkFilter"' <br />DRAIN DOWN device designed to remove CARTRIDGE. <br />standing water between storm events, 779.13" — <br />5. For depths less than the specified minimum SEE DETAIL A PLAN VIEW <br />contact Oldcastle® Stormwater Solutions forCONCRETE — 2X PerkFilter'" CARTRIDGE. <br />I <br />engineering assistance. APRON/COLLAR, 7 r— CARTRIDGE BYPASS PORT, <br />SEE NOTE 6. ; i� ` TYPICAL. <br />6. Field poured Concrete Apron / Collar required, + <br />by others. Refer to PF-SCB-1000 for <br />recommended configuration.INLET, <br />SEE NOTE 3. '1 MINIMUM <br />- DEPTH. <br />7. PerkFilterTI cartridge shall be maintained SEE TABULATION <br />in accordance with manufacturer t <br />recommendations. DRAIN DOWN t --►& NOTE 5. <br />} <br />DEVICE. r <br />1k Treatment Flow Rates shown Conform to IL v 76.13 ` OUTLET, (VENTED). <br />Washington State GULD Specifications. SECTION A -A <br />PerkFilteC TM O1dcastle® <br />aSteel Catch Basin Stormwater Solutions : 7921 6oullgerk Reza, Sure 2001 UMu[m, 00 1 80120 1 Ph: 800.678.88191 akJmsU@5bneivefer=n <br />---' Double Cartridge�Rg�r��F �. �reE <br />U7FL u ras' �r K.UaRIS iO:l+E •xrs or SWe �4ivan. cavrrra:nlfYd ffAGHI-:E Pi¢Fl9i W. ru alas R15FR1Ep. <br />Medle 9RAWI ry wcv I. <br />ECO-0143 ra'r <br />Fitr n (End Grate Configuration) PF•SCB-WA4002 NR N-3 JPR 12/2/16 SHEET 1 of I <br />U <br />TALUS <br />EXHIBIT B4 <br />o STORM WATER MAINTENANCE AGREEMENT <br />;� L_ L_ L_ L_ BUILDING D DETAILS <br />3 a ENGINEERING I PLANNING I DEVELOPMENT <br />.a Job No.: 18190 Date: 01/19/22 Sheet: 04 of 06 <br />ATTY/AGR.2022.072/STMMA (Page 14 of 23) <br />