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2022 - Declaration of Covenant for Inspection and Maintenance of Stormwater Facilities and BMPS - Columbia Trust Company / City of Tukwila - 20220608000199
After Recording Return to: City Clerk City of Tukwila 6200 Southcenter Boulevard Tukwila, WA 98188 1111111111111111111111 20220608000199 COVENANT Rec:5243.50 6/8/2022 9:33 AM KING COUNTY, WA DECLARATION OF COVENANT FOR INSPECTION AND MAINTENANCE OF STORMWATER FACILITIES AND BMPS Grantor(s): COLUMBIA TRUST COMPANY KAREN DANIELI JOSEPH R. DESIMONE Gra ntee(s): CITY OF TUKWILA, a Washington municipal corporation Abbreviated Legal Description: A portion of the NE 1/4 of Section 4, Township 23 North, Range 4 East, in King County Washington. A full Legal Description of the Property is attached hereto as Exhibit "A". Assessor's Tax Parcel ID Nos.: 042304-9150,042304-9011,042304-9073,042304-9001 Page 1 of 8 DECLARATION OF COVENANT FOR INSPECTION AND MAINTENANCE OF STORMWATER FACILITIES ANI) BMPS IN CONSIDERATION of the Public Works final inspection for City of Tukwila Public Works Permit No. PW19-0114 relating to the real property ("Property") as described in Exhibit "A" attached hereto and by this reference incorporated herein, COLUMBIA TRUST COMPANY, KAREN DANIEL and JOSEPH R. DESIMONE, as Co -Trustees under the Testamentary Trust of GIUSEPPE DESIMONE, deceased, and as Co -Trustees under the Testamentary Trust of ASSUNTA DESIMONE, deceased (each said trust as to a 50% tenant-in-common interest), referred to herein collectively as ("Grantors"), the fee simple owners of that Property, hereby covenant to the City of Tukwila, a Washington municipal corporation (the "Grantee"), that. they will observe, consent to, and abide by the conditions and obligations set forth and described in the following Paragraphs I through 10 hereof with regard to the Property, and hereby grant to the Grantee an easement with respect to the Property as described in Paragraphs 2 and 3 hereof. Accordingly, pursuant to this Declaration of Covenant for Inspection and Maintenance of Stormwater Facilities and BMPs (the "Declaration of Covenant"), the Grantors hereby grant, covenant, and agree as follows: 1. The Grantors and their successors in interest and assigns (collectively, the "Owner") shall, at their own expense, operate, maintain, and keep in good repair, the Property's stormwater facilities and best management practices ("BMPs") identified in the plans and specifications submitted to the City of Tukwila for the review and approval of Public Works Permit No. PW19-01 14. The term "stormwater facilities" includes pipes, catch basins, modular wetlands, vaults and other engineered structures designed to manage stormwater on the Property. Stormwater BMPs include vegetated areas, permeable pavements, vegetated roofs, rainwater harvesting systems, reduced impervious surface coverage and other measures designed to reduce the amount of stormwater runoff on the Property. Page 2 of 8 2. The City of Tukwila shall have the right of ingress and egress over those portions of the Property necessary to perform inspections of the stormwater facilities and BMPs and conduct other activities specified in this Declaration of Covenant and in accordance with City of Tukwila Code ("TMC") 14.30.80. This right of ingress and egress, right to inspect, and right to perforin required maintenance or repair shall be as provided for in Paragraph 3 below. 3. Ifthe City of Tukwila determines that maintenance or repair work is required to be done to any of the stormwater facilities or BMPs, the Director of Public Works (the "Director") shall give notice of the specific maintenance and/or repair work required pursuant to TMC 14.30.80. The Director shall also set a reasonable time in which such work is to be completed by the Owner. If the above required maintenance or repair is not completed within the time set by the Director, the City may perform the required maintenance or repair, and hereby is granted access to the Property for such purposes. Written notice will be sent to the Owner stating the City's intention to perforin such work. This work will not commence until at least seven (7) days after such notice is mailed. if, within the sole discretion of the Director, there exists an imminent or present danger, the seven (7) day notice period will be waived and maintenance and/or repair work will begin immediately. 4. If at any time the City of Tukwila reasonably determines that a stormwater facility or BMP on the Property creates any of the hazardous conditions listed in TMC 14.30.80 and herein incorporated by reference, the Director or equivalent municipal successor's official may take measures specified therein. 5. The Owner shall assume all responsibility for the cost of any maintenance or repair work completed by the City as described in Paragraph 3 or any measures taken by the City to address hazardous conditions as described in Paragraph 4. Such responsibility shall include reimbursement to the City within thirty (30) days of the receipt of the invoice for any such work performed. Overdue payments will require payment of interest at the current legal rate as liquidated damages. If legal action ensues, the prevailing party is entitled to costs or fees. 6. The Owner is hereby required to obtain written approval from the Director of Public Works prior to filling, piping, cutting, or removing vegetation (except in routine landscape maintenance) in open Page 3 of 8 vegetated stormwater facilities (such as swales, channels, ditches, ponds, etc.), or performing any alterations or modifications to the stormwater facilities and BMPs referenced in this Declaration of Covenant. 7. Any notice or consent required to he given or otherwise provided for by the provisions of this Declaration of Covenant shall be effective upon personal delivery, or three (3) days after mailing by Certified Mail, return receipt requested, to the address listed below for that party: To Grantee: City Clerk City of Tukwila 6200 Southcenter Blvd, Tukwila, WA 98188 To Grantors/Owner: COLUMBIA TRUST COMPANY 1301 A Street, Suite 800 Tacoma, WA 98104 Attn: James Rooney KAREN DANIELT P.O. Box 893 Medina, WA 98039 JOSEPH DES.EMONI 5609 SW Manning St. Seattle, WA 98116-3149 8. With regard to the matters addressed herein, this Declaration of Covenant constitutes the entire agreement between the parties, and supersedes all prior discussions, negotiations, and all agreements whatsoever whether oral or written. 9. This Declaration of Covenant is intended to protect the value and desirability of the real property described in Exhibit "A", promote the efficient and effective management of surface water drainage on the property, and shall inure to the benefit of all the citizens of the City of Tukwila. This Declaration of Covenant shall run with the land and be binding upon the Grantors, and the Grantors' successors in interest, and assigns. 10. This Declaration of Covenant may be terminated by execution of a written agreement by the Owner and the City of Tukwila that is recorded by King County in its real property records. [The remainder of this page is intentionally left blank. The executing signatures of the Grantors and Grantee are on the following pages.] Page 4 of 8 IN WITNESS WHEREOF, this Declaration of Covenant for the Inspection and Maintenance of Stormwater Facilities and BMPs is executed by Grantors on this day of 2021, GRANTOR COL,[. M By STATE OF WASHINGTON ) )ss. COUNTY OF KING ) I hereby certify that I know or have satisfactory evidence that g,poz,r-t jaaddej is the person who personally appeared before me, and said persons acknowledged that he/she signed this instrument on oath stated that 0/she was authorized to execute the instrument and acknowledge it as the Pee s►rSPw t-�-- of CoILoy\bi to Tia " Coy+ p(A3,-../ , to be the free and voluntary act on behalf of said parties for the uses and purposes mentioned in the instrument. Notary Public in and for the State of Washington residing at 6I,rw4% wA- My appointment expires t o 'V1 z -z Page 5 of 8 GRANTORS: KAREN DANIELI By: '/ignature By: `44ZYZ-t�IJ�C�r��EL t Printed Name Its: CP) Title STATE OFWV-A-S-I=I-INGTON ) I&)ss. COUNTY OF K-IN6- ) I hereby certify that I know or have satisfactory evidence that 4,4- /,‘ liv-« i -i (r is the person who personally appeared before me, and said person acknowledged that he/she signed this instrument on oath stated that he/she was authorized toexecute the instrument and acknowledge it as the 00 u -e, \e er-v, of 51 riw'� � �'�- `� /,7L, e to be the free and voluntary act on behalf of said parties for the uses and purposes mentioned in the instrument. Dated /rf r1 L , )'3 , 2021. BETH SCHULER Notary Public - California Riverside County Commission # 2372607 My Comm. Expires Sep 24, 2025 Notary Public in and for the State of Washington (1,-t.t/ residing at Le. (4- My appointment expires Page 6 of 8 G RANTORS: JOSEPH R. DESIMONE By: ature By: 4 Printed Islame Its: Title COUNTY OF', I S I/ d/✓6' HrntyfO ) 14r-1 � )ss. ) e1L (t- #.141/(44fek-i /i 1 hereby certify that I know or have satisfactory evidence that -5t'-p 1n , (t-. P -is the person who personally appeared before me, and said person acknowledged that signed this instrument on oath stated that he/she was authorized to execute the instrument and acknowledge it as the ...parties of , to be the free and voluntary act on behalf of said partfor the uses and purposes mentioned in the instrument. Dated I --.,a= '202I. CHRISTINE M. GARRET! Notary Public Commission Number 598184 Expires: February 4, 2025 Pinal County Notary Public in and for the State ofWaohingoH Air1- /Aci„, residing at b My appointment expires Page 7 of 8 IN WITNESS WHEREOF, this Declaration of Covenant for the Inspection and Maintenance of Stormwater Facilities and BMPs is executed by Grantee on this .3 day of M, , 2022. GRANTEE: CITY OF TUKWILA, a Washington municipal corporation By: Hari Ponnetaki , Public Works Director STATE OF WASHINGTON ) ss COUNTY OF KING On this day personally appeared before me 41412 / PdAid X.*#T(to me known to be the 7) / k e, re) e°?, of the CITY OF TUKWILA, a municipal corporation and noncharter code city with a council -mayor form of government organized pursuant to RCW Title 35A, that executed the foregoing instrument, and acknowledged such instrument to be her free and voluntary act and deed of said city for the uses and purposes therein mentioned, and on oath stated that s/he was duly authorized to execute such instrument. GIVEN UNDER MY HAND AND OFFICIAL SEAL this 31 day of WIaRA-_,,, ✓93-' , 2021. �T �� "hp�/�©; �i Printed Name S,94,V." 41 "tie g S NOTARY PUBLIC in and for the State of Washington, � �� y 2 residing at ,le tiitJE Y�"14,4•09S,41/4 �I I Lr My Commission Expires 4%/C`%/.2©2S �F N►,n09� 144.l© E WASH``\ Page 8 of 8 EXHIBIT A LEGAL DESCRIPTION PARCEL A: A PORTION GOVERNMENT LOTS 6, 7, 11 AND THE NORTHWEST QUARTER OF THE SOUTHEAST QUARTER ALL IN SECTION 4, TOWNSHIP 23 NORTH, RANGE 4 EAST OF THE WILLAMETTE MERIDIAN, LYING NORTHEASTERLY OF PRIMARY STATE HIGHWAY NO. 1, AS ESTABLISHED BY KING COUNTY SUPERIOR COURT CAUSE NO. 529021 AND NORTHEASTERLY OF WEST MARGINAL PLACE SOUTH AND NORTHEASTERLY OF THE CITY OF SEATTLE TRANSMISSION LINE EASEMENT ESTABLISHED BY KING COUNTY SUPERIOR COURT CAUSE NO. 469557 AND LYING SOUTHERLY AND WESTERLY OF THE DUWAMISH RIVER, MORE PARTICULARLY DESCRIBED AS FOLLOWS: COMMENCING AT THE SOUTHEAST CORNER OF GOVERNMENT LOT 8 IN SAID SECTION 4 WHICH BEARS NORTH 01°40'20" EAST FROM THE SOUTHEAST CORNER OF SAID SECTION 4; THENCE NORTH 88°14'02" WEST ALONG THE SOUTH LINE OF SAID GOVERNMENT LOT 8 AND SAID GOVERNMENT 6 A DISTANCE OF 2626.18 TO THE CENTER OF SAID SECTION 4 AND BEING THE NORTHEAST CORNER OF GOVERNMENT LOT 5 OF SAID SECTION 4; THENCE CONTINUING NORTH 88°14'02" WEST ALONG THE NORTH LINE OF SAID GOVERNMENT LOT 5 A DISTANCE OF 158.89 FEET TO A POINT ON THE NORTHEASTERLY MARGIN OF WEST MARGINAL PLACE SOUTH (PRIMARY STATE HIGHWAY NO. 1) BEING A POINT ON A CURVE, CONCAVE TO THE SOUTHWEST HAVING A RADIUS OF 3969.72 FEET THE CENTER OF WHICH BEARS SOUTH 51°08'01" WEST; THENCE SOUTHEASTERLY ALONG SAID CURVE THROUGH A CENTRAL ANGLE OF 04°34'34" FOR AN ARC DISTANCE OF 317.06 FEET; THENCE SOUTH 61°50'51" EAST, 18.77 FEET TO THE POINT OF BEGINNING OF PARCEL A; THENCE NORTH 48°08'11" EAST, A DISTANCE OF 650.89 FEET; THENCE NORTH 41°51'49" WEST, A DISTANCE OF 392.49 FEET; THENCE CONTINUE NORTHWESTERLY ALONG SAID LINE, A DISTANCE OF 30.25 FEET; THENCE NORTH 21°02'56" WEST, A DISTANCE OF 24.83 FEET TO THE LINE OF ORDINARY HIGH WATER OF THE DUWAMISH RIVER; THENCE NORTH 67°01'05" EAST, A DISTANCE OF 27.38 FEET; THENCE NORTH 50°16'31" EAST, A DISTANCE OF 42.61 FEET; THENCE NORTH 64°38'23" EAST, A DISTANCE OF 38.36 FEET; THENCE NORTH 80°35'06" EAST, A DISTANCE OF 49.77 FEET; THENCE NORTH 75°33'51" EAST, A DISTANCE OF 21.13 FEET; THENCE SOUTH 74°41'06" EAST, A DISTANCE OF 26.59 FEET; THENCE SOUTH 69°18'47" EAST, A DISTANCE OF 18.46 FEET; THENCE SOUTH 65°27'54" EAST, A DISTANCE OF 42.18 FEET; THENCE SOUTH 59°06'08" EAST, A DISTANCE OF 81.77 FEET; THENCE SOUTH 63°42'59" EAST, A DISTANCE OF 54.18 FEET; THENCE SOUTH 65°32'14" EAST, A DISTANCE OF 58.59 FEET; THENCE SOUTH 83°52'35" EAST, A DISTANCE OF 42.45 FEET; THENCE SOUTH 55°33'03" EAST, A DISTANCE OF 44.06 FEET; THENCE NORTH 84°23'04" EAST, A DISTANCE OF 37.07 FEET; THENCE SOUTH 64°07'41" EAST, A DISTANCE OF 110.80 FEET; THENCE SOUTH 60°02'12" EAST, A DISTANCE OF 83.81 FEET; THENCE SOUTH 52°55'45" EAST, A DISTANCE OF 71.95 FEET; THENCE SOUTH 69°01'19" EAST, A DISTANCE OF 80.63 FEET; THENCE SOUTH 63°29'16" EAST, A DISTANCE OF 90.61 FEET; THENCE SOUTH 64°30'54" EAST, A DISTANCE OF 58.01 FEET; THENCE SOUTH 61°02'21" EAST, A DISTANCE OF 114.17 FEET; THENCE SOUTH 69°44'34" EAST, A DISTANCE OF 70.36 FEET; THENCE SOUTH 58°42'01" EAST, A DISTANCE OF 115.63 FEET; THENCE SOUTH 69°16'43" EAST, A DISTANCE OF 106.58 FEET; THENCE SOUTH 62°34'58" EAST, A DISTANCE OF 61.20 FEET; THENCE SOUTH 69°45'23" EAST, A DISTANCE OF 97.15 FEET; THENCE SOUTH 67°55'45" EAST, A DISTANCE OF 52.41 FEET; THENCE SOUTH 71°58'25" EAST, A DISTANCE OF 38.32 FEET; THENCE SOUTH 63°19'09" EAST, A DISTANCE OF 34.28 FEET; THENCE SOUTH 63°2927" EAST, A DISTANCE OF 38.57 FEET; THENCE SOUTH 79°42'44" EAST, A DISTANCE OF 39.93 FEET; THENCE SOUTH 53°21'01" EAST, A DISTANCE OF 58.21 FEET; THENCE SOUTH 32°0018" EAST, A DISTANCE OF 35.87 FEET; THENCE SOUTH 46°39'59" EAST, A DISTANCE OF 37.74 FEET; THENCE SOUTH 56°03'20" EAST, A DISTANCE OF 64.73 FEET; THENCE SOUTH 28°09'36" EAST, A DISTANCE OF 89.83 FEET; THENCE SOUTH 30°41'47" EAST, A DISTANCE OF 57.91 FEET; THENCE SOUTH 27°3323" EAST, A DISTANCE OF 36.03 FEET; THENCE SOUTH 26°49'37" EAST, A DISTANCE OF 89.83 FEET; THENCE SOUTH 20°05'23" EAST, A DISTANCE OF 100.12 FEET; THENCE SOUTH 18°13'38" EAST, A DISTANCE OF 86.29 FEET; THENCE SOUTH 02°4312" EAST, A DISTANCE OF 78.18 FEET; THENCE SOUTH 05°53'59" WEST, A DISTANCE OF 60.28 FEET; THENCE SOUTH 07°47'02" EAST, A DISTANCE OF 95.24 FEET; THENCE SOUTH 00°06'47" WEST, A DISTANCE OF 79.63 FEET; THENCE SOUTH 29°2718" WEST, A DISTANCE OF 56.95 FEET; THENCE SOUTH 23°16'33" WEST, A DISTANCE OF 57.72 FEET; THENCE SOUTH 11°12'18" WEST, A DISTANCE OF 49.25 FEET; THENCE SOUTH 08°50'59" WEST, A DISTANCE OF 64.30 FEET; THENCE SOUTH 27°59'35" WEST, A DISTANCE OF 56.05 FEET; THENCE SOUTH 31°2727" WEST, A DISTANCE OF 62.03 FEET; THENCE SOUTH 44°05'50" WEST, A DISTANCE OF 27.78 FEET; THENCE SOUTH 32°08'04" WEST, A DISTANCE OF 55.40 FEET; THENCE SOUTH 46°06'00" WEST, A DISTANCE OF 62.80 FEET; THENCE SOUTH 35°31'40" WEST, A DISTANCE OF 45.54 FEET; THENCE SOUTH 59°23'55" WEST, A DISTANCE OF 31.73 FEET TO THE NORTHEASTERLY LINE OF THE CITY OF TUKWILA BOUNDARY LINE ADJUSTMENT NO. L96-0002, RECORDED UNDER RECORDING NO. 9707090733; THENCE NORTH 41°51'49" WEST, ALONG SAID NORTHWESTERLY LINE A DISTANCE OF 1,733.33 FEET TO THE NORTHWESTERLY LINE OF SAID TUKWILA BOUNDARY LINE ADJUSTMENT NO. L96-0002; THENCE SOUTH 48°16'14" WEST, ALONG SAID NORTHWESTERLY LINE A DISTANCE OF 441.21 FEET TO THE NORTHEASTERLY MARGIN OF SAID WEST MARGINAL PLACE SOUTH; THENCE NORTH 27°01'23" EAST, ALONG SAID NORTHEASTERLY MARGIN A DISTANCE OF 6.16 FEET; THENCE NORTH 29°02'24" WEST, A DISTANCE OF 55.89 FEET; THENCE SOUTH 60°35'06" WEST, A DISTANCE OF 100.00 FEET; THENCE NORTH 61°50'51" WEST, A DISTANCE OF 380.93 FEET TO THE POINT OF BEGINNING; TOGETHER WITH THE RIGHTS ACQUIRED BY WASHINGTON STATE DEPARTMENT OF NATURAL RESOURCES AQUATIC LEASE NUMBER 51-A24940, AS SHOWN ON RECORD OF SURVEY RECORDED UNDER KING COUNTY RECORDING NUMBER 20060518900008, DESCRIBED AS FOLLOWS: THAT PORTION OF THE BED OF THE DUWAMISH RIVER LYING BELOW THE MEAN HIGH WATER LINE IN SHORELANDS OF THE SOUTH HALF OF THE NORTHEAST QUARTER OF SECTION 4, TOWNSHIP 23 NORTH, RANGE 4 EAST, W.M., IN THE CITY OF TUKWILA, KING COUNTY, WASHINGTON, DESCRIBED AS FOLLOWS: COMMENCING AT THE NORTHEAST CORNER OF SAID SECTION 4; THENCE SOUTH 0°30'24" WEST ALONG THE EAST LINE OF SAID SECTION, 408.00 FEET; THENCE SOUTH 36°06'27" WEST A DISTANCE OF 1996.17 FEET TO A BRASS CAP MONUMENT STAMPED "DHA 38985" SET ON THE NORTHEASTERLY PRODUCTION OF THE CENTERLINE OF THE BOEING COMPANY'S SOUTH OXBOW BRIDGE; THENCE CONTINUING SOUTH 36°0627" WEST, ALONG SAID CENTERLINE, 29.60 FEET TO THE INTERSECTION WITH THE LINE OF VEGETATION (MEAN HIGH WATER) ON THE RIGHT BANK OF THE DUWAMISH RIVER AND THE TRUE POINT OF BEGINNING; THENCE SOUTH 52°56'55" EAST, ALONG SAID VEGETATION LINE 27.00 FEET; THENCE SOUTH 36°06'27" WEST, ACROSS THE BED OF SAID RIVER, 277.78 FEET TO THE LEFT BANK AND LINE OF VEGETATION THEREOF; THENCE NORTH 61°07'42" WEST, ALONG SAID LEFT BANK VEGETATION LINE, 27.22 FEET TO THE INTERSECTION WITH SAID BRIDGE CENTERLINE FROM WHICH A BRASS CAP MONUMENT STAMPED "DHA 38985" BEARS SOUTH 36°06'27' WEST, 50.73 FEET; THENCE CONTINUING NORTH 61°07'42" WEST, ALONG SAID VEGETATION LINE, 33.26 FEET; THENCE NORTH 36°0627" EAST, ACROSS THE BED OF SAID RIVER, 286.38 FEET TO THE INTERSECTION WITH THE LINE OF VEGETATION ON THE RIGHT BANK THEREOF; THENCE SOUTH 52°56'55' EAST, ALONG SAID LINE, 33.00 FEET TO THE TRUE POINT OF BEGINNING. ALSO, TOGETHER WITH AN EASEMENT FOR PRIVATE ROAD AND UNDERGROUND UTILITIES AS SET FORTH IN EASEMENT RECORDED APRIL 1, 1996 AS RECORDING NO. 9604010509; EXCEPT ANY PORTION LYING WITHIN LOTS 1 AND 2 OF CITY OF TUKWILA BOUNDARY LINE ADJUSTMENT NO. L96-0002, RECORDED UNDER RECORDING NO. 9707090733; AND EXCEPT ANY PORTION THEREOF LYING NORTHEASTERLY OF A LINE BEING 225 FEET NORTHEASTERLY OF THE CENTER OF THE PROPOSED EXTENSION OF THE DUWAMISH WATERWAY. PARCEL B: A PORTION GOVERNMENT LOT 6 AND THE NORTHWEST QUARTER OF THE SOUTHEAST QUARTER ALL IN SECTION 4, TOWNSHIP 23 NORTH, RANGE 4 EAST OF THE WILLAMETTE MERIDIAN, LYING NORTHEASTERLY OF PRIMARY STATE HIGHWAY NO. 1, AS ESTABLISHED BY KING COUNTY SUPERIOR COURT CAUSE NO. 529021 AND NORTHEASTERLY OF WEST MARGINAL PLACE SOUTH, MORE PARTICULARLY DESCRIBED AS FOLLOWS: COMMENCING AT THE SOUTHEAST CORNER OF GOVERNMENT LOT 8 IN SAID SECTION 4 WHICH BEARS NORTH 01°40'20" EAST FROM THE SOUTHEAST CORNER OF SAID SECTION 4; THENCE NORTH 88°14'02" WEST ALONG THE SOUTH LINE OF SAID GOVERNMENT LOT 8 AND SAID GOVERNMENT 6 A DISTANCE OF 2626.18 TO THE CENTER OF SAID SECTION 4 AND BEING THE NORTHEAST CORNER OF GOVERNMENT LOT 5 OF SAID SECTION 4; THENCE CONTINUING NORTH 88°14'02" WEST ALONG THE NORTH LINE OF SAID GOVERNMENT LOT 5 A DISTANCE OF 158.89 FEET TO A POINT ON THE NORTHEASTERLY MARGIN OF WEST MARGINAL PLACE SOUTH (PRIMARY STATE HIGHWAY NO. 1) BEING A POINT ON A CURVE, CONCAVE TO THE SOUTHWEST HAVING A RADIUS OF 3969.72 FEET THE CENTER OF WHICH BEARS SOUTH 51°08'01" WEST; THENCE SOUTHEASTERLY ALONG SAID CURVE THROUGH A CENTRAL ANGLE OF 03°45'23" FOR AN ARC DISTANCE OF 260.26 FEET TO THE POINT OF BEGINNING; THENCE NORTH 48°08'11" EAST, A DISTANCE OF 71.88 FEET; THENCE NORTH 35°43'17" EAST, A DISTANCE OF 255.82 FEET; THENCE NORTH 48°08'11" EAST, A DISTANCE OF 328.50 FEET; THENCE SOUTH 41°51'49" EAST, A DISTANCE OF 129.00 FEET; THENCE SOUTH 48°08'11" WEST, A DISTANCE OF 650.89 FEET; THENCE NORTH 61°50'51" WEST, A DISTANCE OF 18.77 FEET TO THE NORTHEASTERLY MARGIN OF SAID WEST MARGINAL PLACE SOUTH AND BEING A POINT OF A NON -TANGENT CURVE TO THE LEFT OF WHICH THE RADIUS POINT LIES SOUTH 55°42'36" WEST, A RADIAL DISTANCE OF 3,969.72 FEET; THENCE NORTHWESTERLY ALONG THE ARC, THROUGH A CENTRAL ANGLE OF 00°49'12", A DISTANCE OF 56.80 FEET TO THE POINT OF BEGINNING. PARCEL C: A PORTION GOVERNMENT LOTS 5, 6, AND THE NORTHWEST QUARTER OF THE SOUTHEAST QUARTER ALL IN SECTION 4, TOWNSHIP 23 NORTH, RANGE 4 EAST OF THE WILLAMETTE MERIDIAN, LYING NORTHEASTERLY OF PRIMARY STATE HIGHWAY NO. 1, AS ESTABLISHED BY KING COUNTY SUPERIOR COURT CAUSE NO. 529021 AND NORTHEASTERLY OF WEST MARGINAL PLACE SOUTH AND LYING SOUTHERLY OF THE DUWAMISH RIVER, MORE PARTICULARLY DESCRIBED AS FOLLOWS: COMMENCING AT THE SOUTHEAST CORNER OF GOVERNMENT LOT 8 IN SAID SECTION 4 WHICH BEARS NORTH 01°40'20" EAST FROM THE SOUTHEAST CORNER OF SAID SECTION 4; THENCE NORTH 88°14'02" WEST ALONG THE SOUTH LINE OF SAID GOVERNMENT LOT 8 AND SAID GOVERNMENT 6 A DISTANCE OF 2626.18 TO THE CENTER OF SAID SECTION 4 AND BEING THE NORTHEAST CORNER OF GOVERNMENT LOT 5 OF SAID SECTION 4; THENCE CONTINUING NORTH 88°14'02" WEST ALONG THE NORTH LINE OF SAID GOVERNMENT LOT 5 A DISTANCE OF 158.89 FEET TO A POINT ON THE NORTHEASTERLY MARGIN OF WEST MARGINAL PLACE SOUTH (PRIMARY STATE HIGHWAY NO. 1) BEING A POINT ON A CURVE, CONCAVE TO THE SOUTHWEST HAVING A RADIUS OF 3969.72 FEET, THE CENTER OF WHICH BEARS SOUTH 51°08'01" WEST; THENCE SOUTHEASTERLY ALONG SAID CURVE THROUGH A CENTRAL ANGLE OF 00°58'31" FOR AN ARC DISTANCE OF 67.58 FEET TO THE LINE OF ORDINARY HIGH WATER OF THE DUWAMISH RIVER AND BEING THE POINT OF BEGINNING; THENCE NORTH 48°16'14" EAST, ALONG SAID LINE OF ORDINARY HIGH WATER A DISTANCE OF 26.86 FEET; THENCE NORTH 18°12'56" EAST, A DISTANCE OF 114.40 FEET; THENCE NORTH 26°19'18" EAST, A DISTANCE OF 61.05 FEET; THENCE NORTH 27°37'29" EAST, A DISTANCE OF 83.73 FEET; THENCE NORTH 48°16'07" EAST, A DISTANCE OF 78.01 FEET; THENCE NORTH 42°58'18" EAST, A DISTANCE OF 54.64 FEET; THENCE NORTH 62°18'43" EAST, A DISTANCE OF 57.10 FEET; THENCE NORTH 43°29'21" EAST, A DISTANCE OF 57.82 FEET; THENCE NORTH 12°16'51" EAST, A DISTANCE OF 61.81 FEET; THENCE NORTH 58°38'10" EAST, A DISTANCE OF 76.86 FEET; THENCE SOUTH 41°51'49" EAST, A DISTANCE OF 263.49 FEET; THENCE SOUTH 48°08'11" WEST, A DISTANCE OF 328.50 FEET; THENCE SOUTH 35°43'17" WEST, A DISTANCE OF 255.82 FEET; THENCE SOUTH 48°08'11" WEST, A DISTANCE OF 71.88 FEET TO THE NORTHEASTERLY MARGIN OF SAID WEST MARGINAL PLACE SOUTH AND BEING A POINT OF A NON -TANGENT CURVE TO THE LEFT, OF WHICH THE RADIUS POINT LIES SOUTH 54°5324" WEST, A RADIAL DISTANCE OF 3,969.72 FEET; THENCE NORTHWESTERLY ALONG THE ARC, THROUGH A CENTRAL ANGLE OF 02°46'52", A DISTANCE OF 192.68 FEET TO THE POINT OF BEGINNING. MAINTENANCE EXHIBIT 30F5 50' 100' 200' E: 1 "=100' 1,,=100' 1 • • SDCO 112 SDCO 113 SDCO 133 SDCO 132 /-SDCO 130 r8DCO 128 �SDCO 126 j�T 11 IJ I I I I I I I ' SDCO 131 SDCO 121481D1101,47 SDCO 125 SDC0118 1 1 11 1 1 1 1 1 1 �117J SDCO 4491 SDCO 120 SDCO 121 SDC0122 SDCO 123 SDCO,128C 1 SDCO 124 1288+ SDCO 1248 CB 443A C8132 • CB 431 —ra min Mmum ■ ane 1 MN CB 443A C8132 • CB 431 I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I 1111 I 11111111 Exhibit "B" Stormwater Pollution Prevention Plan for Oxbow Site Building Permit No. D19-0327 Site Address The site address is 2871 S. 102nd Street, Tukwila, WA 98168. The project is located in a portion of the NE 1/4 of Section 4, Township 23 North, Range 4 East, W.M., in King County, Washington. Assessor's Tax Parcel ID Nos.: 042304-9150, 042304-9011, 042304-9073, and 042304-9001. Plan Goal The specific purpose of the storm water facilities is to minimize pollution that is typically associated with modern development. Stormwater runoff contains pollutants harmful to humans and aquatic life. The majority of pollution is generated by motor vehicles and lawn / landscape maintenance. The goal of the plan is to treat all runoff from pollution generating surfaces with cartridge type water quality units prior to discharge to the Duwamish River. All facilities and Best Management Practices designed and constructed for stormwater collection, conveyance, and water quality treatment must be inspected and maintained to comply with the federal Clean Water Act and the Washington State Department of Ecology Phase II National Pollution Discharge Elimination System (NPDES) Permit. Site information The Oxbow Site development is approximately 45.1 acres and includes the building, parking lot, landscaping areas and the trail along the river. The storm water system includes the roof drains from the building, catch basins, underground conveyance pipes and underground vaults with media cartridges to treat storm water runoff. Care should be taken to keep the site clean to prevent pollutants from entering the storm sewer system. This includes trash, fallen leaves, dirt and rocks in the parking lot and other debris. Landscaping should be maintained and fertilizer and herbicides/pesticides should be used minimally to prevent chemicals from being flushed off site. Periodic maintenance of the parking lot, including sweeping should be done to reduce the amount of debris entering the storm system. Runoff from this site drains to the Duwamish River. Since runoff from this site drains to the adjacent river, it is especially important that pollutants are prevented to the extent possible from entering the storm system. Preventative BMP's The catch basins shall have stenciled next to them "DUMP NO WASTE -DRAINS TO STREAM". Activity that involves pollutants shall be done under a covered area. The private driveways and parking lot shall be cleaned and swept as necessary to remove debris. 20723.024.docx 1 of 11 Inspection It is important to know where your stormwater facilities are located and what type of maintenance they require. Some facilities may require very little maintenance and only annual inspection. Others may require frequent monitoring and upkeep to make sure they are functioning as designed. The list of stormwater features and facilities below are shown on your Maintenance Exhibit Maps included in this document. Each of these items has specific inspection intervals and maintenance requirements. The requirements for inspection and maintenance can be found in the pages at the end of this document. Different components of your stormwater management site will require different kinds of inspections and during different times of the year. It is important to perform inspections in a manner that does not put your personal safety at risk. Inspect the stormwater system and clean out catch basins at least twice a year, especially after periods of heavy runoff. Maintenance records must be kept for five (5) years and available for City Inspector review. The water quality units shall be maintained as recommended by the manufacturer. Owners/Tenants have the following Operations and Maintenance responsibilities, which include: I. Training staff to perform maintenance and inspections, including becoming familiar with how to open catch basins and manholes, safe operating procedures on entering confined spaces, operation and maintenance practices for the onsite water quality units (Old Castle Perkfilter) and how care must be taken to not wash pollutants or sediment into the storm system. II. Inspection and maintenance of all on-site drainage facility components (catch basins, fencing, storm manholes, pipes, vaults) at least twice annually: A. Remove accumulated sediment and debris from all pipes, structures, and vaults (any debris and/or sediment collected shall be disposed of in accordance with applicable State and Federal requirements). B. Inspect and repair any damage, including; cracks, unsealed joints and pipes that deviate from their design shape C. Maintain access points including manhole hole lids, grates and ladders D. Debris and leaves shall be removed from catch basin grates E. General site surroundings: 1) Maintaining good housekeeping practices on the site will reduce the amount of trash, debris, and sediment that reaches the storm system. 2) The owner, tenants and anyone doing landscaping on the property must be careful to avoid introducing landscape fertilizer to receiving waters or groundwater. 20723.024.docx 2 of 11 Person of Responsibility Dermody Properties Email: Icoxbowdermociv.com Contact: Elizabeth Teske, CPM SENIOR VICE PRESIDENT, PROPERTY MANAGEMENT EMAIL eteskedermody.com DIRECT (775) 335.0126 CELL (775) 721.6000 FAX (775) 856.0831 5500 Equity Avenue Reno, NV 89502 Engineer PreparinPlan Barghausen Consulting Inc. Name Jason HubbeP.E. Address 18215 72nd Avenue South, Kent, WA 98032 Record Keeping The above maintenance activities will be documented each year and kept in a log book. Maintenance logs shall be made available to the City ot TukwUa upon request. This manual and the togs should be kept on- site, preferably in an office b&onging to the person tasked with ensuring the system is function as intended. Plan and/or Information Updates The City of Tukwila, Public Works Department, Engineering Division, Storm Drainage Section, is to review and approve any changes to this Stormwater Pollution Prevention Plan prior to changes in its implementation. Additionally, any changes in ownership or person of responsibility are to be reported to the City ofTukwila, Public Works. 20723.024.docx 3 of 11 INSPECTION / MAINTENANCE CHECKLIST The items in this checklist will be inspected at least twice per year and maintenance performed as necessary. Refer to the Maintenance Standards included in this manual for a detailed list of inspection tasks and descriptions of when maintenance is required to be performed. STRUCTURE INSPECTION FREQUENCY INSPECTION RESULTS AND MAINTENANCE DONE Inspection Results/Maintenance Date Comments WQ #1 8'x11' Perkfilter with 13- 24" cartridges 2 Insp. Results Maint. Done WQ #2 8'x18' Perkfilter with 25- 30" cartridges 2 Insp. Results Maint. Done WQ #3 8'x15' Perkfilter with 23- 12" cartridges 2 Insp. Results Maint. Done WQ #4 8'x18' Perkfilter with 24- 24" cartridges 2 Insp. Results Maint. Done CB #1, TYPE 2 With standard grate 2 Insp. Results Maint. Done 20723.024.docx 4 of 11 CB #2, TYPE 2 With standard grate 2 Insp. Results 8&einiDono CB #3, TYPE 2 With standard grate 2 Insp. Results Maint. Done CB #4, TYPE 2 With standard grate 2 Insp. Results Ma/niDone CB #5, TYPE 2 With standard grate 2 Insp. Results Maint. Done CB#G.TYPE 2 With standard grate 2 Insp. Results Maint. Done CB #7, TYPE 2 With standard grate 2 Insp. Results MaintDonm CB#8.TYPE 1 With standard grate 2 Insp. Results Maint. Done CB#8A.TYPE 1 With standard grate 2 Insp. Results Ma/niDone CB#S.TYPE 1 With standard grate 2 Insp. Results MaintDmne CB#9A.TYPE 2 With standard grate 2 Insp. Results Maint. Done CB#1O.TYPE 2 With standard grate 2 Insp. Results MainiDone CB#11.TYPE 1 With standard grate 2 Insp. Results Ma/niDnne CB#11A.TYPE 1 With standard grate 2 Insp. Results MainiDmne 20723.024.docx 5 of 11 CB #12, TYPE 1 With standard grate 2 Insp. Results Maint. Done CB #12A, TYPE 1 With standard grate 2 Insp. Results Maint. Done CB #13, TYPE 1 With standard grate 2 Insp. Results Maint. Done CB #13A, TYPE 1 With standard grate 2 Insp. Results Maint. Done CB #15, TYPE 2 With standard grate 2 Insp. Results Maint. Done CB #15A, TYPE 2 With solid locking lid 2 Insp. Results Maint. Done CB #16, TYPE 1 With standard grate 2 Insp. Results Ma/niDone CB #17, TYPE 1 With standard grate 2 Insp. Results Maint. Done CB #17A, TYPE 1 With standard grate 2 Insp. Results Ma/niDone CB #18, TYPE 1 With standard grate 2 Insp. Results Maint. Done CB#10.TYPE 1 With standard grate 2 Insp. Results Maint. Done CB #20, TYPE 1 With standard grate 2 Insp. Results Maint. Done CB #21, TYPE 1 With standard grate 2 Insp. Results Ma/niDune 20723.024.docx 6vrn CB #22, TYPE 1 With standard grate 2 Insp. Results Maint. Done CB #23, TYPE 1 With standard grate 2 Insp. Results 84a/ni Done CB #24, TYPE 1 With standard grate 2 Insp. Results Maint. Done CB #25, TYPE 1 With standard grate 2 Insp. Results Maint. Done CB #26, TYPE 1 With standard grate 2 Insp. Results Maint. Done CB #27, TYPE 1 With standard grate 2 Insp. Results Ma/niDone CB #28, TYPE 1 With standard grate 2 Insp. Results Maint. Done CB #29, TYPE 1 With standard grate 2 Insp. Results Ma/ntDone CB #30, TYPE 1 With standard grate 2 Insp. Results Ma/niDonn CB#31.TYPE 1 With standard grate 2 Insp. Results Maint. Done CB#32.TYPE 1 With standard grate 2 Insp. Results MainiOone CB #33, TYPE 1 With standard grate 2 Insp. Results Maint. Done CB #34, TYPE 1 With standard grate 2 Insp. Results Maint. Done 20723.024.docx 7vrn CB#3G.TYPE 1 With standard grate 2 Insp. Results Maint. Done CB#37.TYPE 1 With standard grate 2 Insp. Results MaintDnno CB #38, TYPE 1 With standard grate 2 Insp. Results Maint. Done CB #39, TYPE 1 With standard grate 2 Insp. Results Ma/niDone C8#4O.TYPE 1 With standard grate 2 Insp. Results MainiDone CB #41, TYPE 1 With standard grate 2 Insp. Results Maint. Done CB #42, TYPE 1 With standard grate 2 Insp. Results Maint. Done CB #43, TYPE 1 With standard grate 2 Insp. Results Ma/niDone CB #44, TYPE 1 With standard grate 2 Insp. Results Maint. Done CB#5O.TYPE 2 With solid locking lid 2 Insp. Results Maint Done CB#51.TYPE 1 With standard grate 2 Insp. Results MaintDnne CB#52.TYPE 1 With standard grate 2 Insp. Results Maint. Done CB #53, TYPE 1 With standard grate 2 Insp. Results Maint. Done 2073.024.dom 8orn CB #54, TYPE 1 With standard grate 2 Insp. Results Maint. Done CB #55, TYPE 1 With standard grate 2 Insp. Results Maint. Done CB #56, TYPE 1 With standard grate 2 Insp. Results Maint. Done CB #57, TYPE 1 With standard grate 2 Insp. Results Maint. Done CB #58, TYPE 1 With solid locking lid 2 Insp. Results Maint. Done CB #59, TYPE 2 With solid locking lid 2 Insp. Results Maint. Done CB #62, TYPE 2 With standard grate 2 Insp. Results Maint. Done CB #63, TYPE 2 With standard grate 2 Insp. Results Maint. Done CB #64, TYPE 2 With standard grate 2 Insp. Results Maint. Done CB #65, TYPE 1 With standard grate 2 Insp. Results Maint. Done CB #66, TYPE 1 With standard grate 2 Insp. Results Maint. Done CB #71, TYPE 1 With standard grate 2 Insp. Results Maint. Done 20723.024.docx 9 of11 CB #72, TYPE 1 With standard grate 2 Insp. Results Maint. Done Conveyance Pipes and Ditches 2 Insp. Results Maint. Done Pipe Outfalls to the river and riprap pads 2 Insp. Results Maint. Done Grounds/Landscaping 1 Insp. Results Maint. Done Roof drains and Cleanouts 2 Insp. Results Maint. Done 1 Monthly 2 Twice a year and after major storm events per manufacturer's recommendations I hereby certify that the above noted inspections and maintenance was performed in accordance with the approved Operations and Maintenance Manual for the Oxbow Site project, Tukwila, Washington. Signature Date Title 20723.024.docx 10 of 11 APPENDIX A MAINTENANCE REQUIREMENTS FOR FLOW CONTROL, CONVEYANCE, AND WQ FACILITIES 2016 Surface Water Design Manual — Appendix A A-9 4/24/2016 Maintenance Component Defect or Problem Condition When Maintenance Is Needed Results Expected When Maintenance Is Performed Structure Sediment Sediment exceeds 60% of the depth from the bottom of the catch basin to the invert of the lowest pipe into or out of the catch basin or is within 6 inches of the invert of the lowest pipe into or out of the catch basin. Sump of catch basin contains no sediment. Trash and debris Trash or debris of more than 1/2 cubic foot which is located immediately in front of the catch basin opening or is blocking capacity of the catch basin by more than 10%. No Trash or debris blocking or potentially blocking entrance to catch basin. Trash or debris in the catch basin that exceeds 1/3 the depth from the bottom of basin to invert the lowest pipe into or out of the basin. No trash or debris in the catch basin. Dead animals or vegetation that could generate odors that could cause complaints or dangerous gases (e.g., methane). No dead animals or vegetation present within catch basin. Deposits of garbage exceeding 1 cubic foot in volume. No condition present which would attract or support the breeding of insects or rodents. Damage to frame and/or top slab Comer of frame extends more than 3/4 inch past curb face into the street (If applicable). Frame is even with curb. Top slab has holes larger than 2 square inches or cracks wider than % inch. Top slab is free of holes and cracks. Frame not sitting flush on top slab, i.e., separation of more than 3/4 inch of the frame from the top slab. Frame is sitting flush on top slab. Cracks in walls or bottom Cracks wider than 'A inch and longer than 3 feet, any evidence of soil particles entering catch basin through cracks, or maintenance person Judges that catch basin is unsound. Catch basin is sealed and is structurally sound. Cracks wider than' 'A inch and longer than 1 foot at the joint of any inlet/outlet pipe or any evidence of soil particles entering catch basin through cracks. No cracks more than 1/4 inch wide at the joint of inlet/outlet pipe. Settlement/ misalignment Catch basin has settled more than 1 inch or has rotated more than 2 inches out of alignment. Basin replaced or repaired to design standards. Damaged pipe joints Cracks wider than' Winch at the joint of the inlet/outlet pipes or any evidence of soil entering the catch basin at the joint of the inlet/outlet pipes. No cracks more than Y44 -Inch wide at the joint of inlet/outlet pipes. Contaminants and pollution Any evidence of contaminants or pollution such as oil, gasoline, concrete slurries or paint. Materials removed and disposed of according to applicable regulations. Source control BMPs implemented if appropriate. No contaminants present other than a surface oil film. Inlet/Outlet Pipe Sediment accumulation Sediment filling 20% or more of the pipe. Inlet/outlet pipes clear of sediment. Trash and debris Trash and debris accumulated in inlet/outlet pipes (includes floatables and non-floatables). No trash or debris in pipes. Damaged Cracks wider than' 'A -inch at the joint of the inlet/outlet pipes or any evidence of soil entering at the joints of the inlet/outlet pipes. No cracks more than' Y. -inch wide at the joint of the inlet/outlet pipe. 2016 Surface Water Design Manual — Appendix A A-9 4/24/2016 APPENDIX A MAINTENANCE REQUIREMENTS FLOW CONTROL, CONVEYANCE, AND WQ FACILITIES „"'`9,,:f.sf ,. J.. „� , 4t t .. •NTi:"i, k. ! ,. ..,'. ,. . ,. .c t ,+, r. r .6<.�.... 3 /, ✓ v, va—,.h. iy,1 e �,' ,., Maintenance Component Defect or Problem Condition When Maintenance is Needed Results Expected When Maintenance Is Performed Metal Grates (Catch Basins) Unsafe grate opening Grate with opening wider than 1/8 Inch. Grate opening meets design standards. Trash and debris Trash and debris that is blocking more than 20% of grate surface. Grate free of trash and debris. footnote to guidelines for disposal Damaged or missing Grate missing or broken member(s) of the grate. Any open structure requires urgent maintenance. Grate is in place and meets design standards, Manhole Cover/Lid Cover/lid not in place Cover/lid is missing or only partially in place. My open structure requires urgent maintenance. Cover/lid protects opening to structure. Locking mechanism Not Working Mechanism cannot be opened by one maintenance person with proper tools. Bolts cannot be seated. Self-locking cover/lid does not work. Mechanism opens with proper tools. Cover/lid difficult to Remove One maintenance person cannot remove cover/lid after applying 80 lbs. of lift. Cover/lid can be removed and reinstalled by one maintenance person. 4/24/2016 2016 Surface Water Design Manual — Appendix A A-10 APPENDIX A MAINTENANCE REQUIREMENTS FOR FLOW CONTROL, CONVEYANCE, AND WQ FACILITIES 2016 Surface Water Design Manual — Appendix A A-11 4/24/2016 L.., ,.., 1' r.o, Maintenance Component Defect or Problem Conditions When Maintenance is Needed Results Expected When Maintenance Is Performed Pipes Sediment & debris accumulation Accumulated sediment or debris that exceeds 20% of the diameter of the pipe. Water flows freely through pipes. Vegetation/roots VegetatioNroots that reduce free movement of water through pipes. Water flows freely through pipes. Contaminants and pollution Any evidence of contaminants or pollution such as oil, gasoline, concrete slurries or paint. Materials removed and disposed of according to applicable regulations. Source control BMPs implemented if appropriate. No contaminants present other than a surface oil film. Damage to protective coating or corrosion Protective coating is damaged; rust or corrosion is weakening the structural integrity of any part of pipe. Pipe repaired or replaced. Damaged Any dent that decreases the cross section area of pipe by more than 20% or 1s determined to have weakened structural integrity of the pipe. Pipe repaired or replaced. Ditches Trash and debris Trash and debris exceeds 1 cubic foot per 1,000 square feet of ditch and slopes. Trash and debris cleared from ditches. Sediment accumulation Accumulated sediment that exceeds 20% of the design depth. Ditch cleaned/flushed of all sediment and debris so that it matches design. Noxious weeds Any noxious or nuisance vegetation which may constitute a hazard to County personnel or the public. Noxious and nuisance vegetation removed according to applicable regulations. No danger of noxious vegetation where County personnel or the public might normally be. Contaminants and pollution Any evidence of contaminants or pollution such as oil, gasoline, concrete slurries or paint. Materials removed and disposed of according to applicable regulations. Source control BMPs implemented if appropriate. No contaminants present other than a surface oil film. Vegetation Vegetation that reduces free movement of water through ditches. Water flows freely through ditches. Erosion damage to slopes Any erosion observed on a ditch slope. Slopes are not eroding. Rock lining out of place or missing (If Applicable) One layer or less of rock exists above native soil area 5 square feet or more, any exposed native soil. Replace rocks to design standards. 2016 Surface Water Design Manual — Appendix A A-11 4/24/2016 APPENDIX A MAINTENANCE REQUIREMENTS FLOW CONTROL, CONVEYANCE, AND WQ FACILITIES 4/24/2016 A-12 2016 Surface Water Design Manual — Appendix A Maintenance Component Defect or Problem Condition When Maintenance Is Needed Reults Maintenance Expecteds PWhen ed. Site Trash and debris Trash or debris plugging more than 20% of the area of the barrier. Barrier clear to receive capacity flow. Sediment accumulation Sediment accumulation of greater than 20% of the area of the barrier Barrer clear to receive capacity flow. Structure Cracked broken or loose Structure which bars attached to is damaged - pipe Is loose or cracked or concrete structure is cracked, broken of loose. Structure barrier attached to is sound. Bars Bar spacing Bar spacing exceeds 6 inches. Bars have at most 6 inches spacing. Damaged or missing bars Bars are bent out of shape more than 3 inches. Ban % inch.with no bends more Bars are missing or entire banier missing. Bars in place according to design. Bars are loose and rust is causing 50% deterioration to any part of barrier. Repair or replace barrier to design standards. 4/24/2016 A-12 2016 Surface Water Design Manual — Appendix A APPENDIX A MAINTENANCE REQUIREMENTS FOR FLOW CONTROL, CONVEYANCE, AND WQ FACILITIES 2016 Surface Water Design Manual — Appendix A A-13 4/24/2016 Maintenance Component Defect or Problem Conditions When Maintenance Is Needed Results Expected When Maintenance Is Performed. Site Trash and debris Trash and/or debris accumulation. Dissipater clear of trash and/or debris. Contaminants and pollution Any evidence of contaminants or pollution such as oil, gasoline, concrete slurries or paint. Materials removed and disposed of according to applicable regulations. Source control BMPs implemented if appropriate. No contaminants present other than a surface oil film. Rock Pad Missing or moved Rock Only one layer of rock exists above native soil in area five square feet or larger or any exposure of native soil. Rock pad prevents erosion. Dispersion Trench Pipe plugged with sediment Accumulated sediment that exceeds 20% of the design depth. Pipe cleaned/flushed so that it matches design. Not discharging water properly Visual evidence of water discharging at concentrated points along trench (normal condition is a "sheet flout' of water along trench). Water discharges from feature by sheet flow. Perforations plugged. Over 1/4 of perforations in pipe are plugged with debris or sediment. Perforations freely discharge flow. Water flows out top of "distributor" catch basin. Water flows out of distributor catch basin during any storm less than the design storm. No flow discharges from distributor catch basin. Receiving area over- saturated Water in receiving area is causing or has potential of causing landslide problems. No danger of landslides. Gabions Damaged mesh Mesh of gabion broken, twisted or deformed so structure is weakened or rock may fall out. Mesh is intact, no rock missing. Corrosion Gabion mesh shows corrosion through more than Y, of its gage. All gabion mesh capable of containing rock and retaining designed form. Collapsed or deformed baskets Gabion basket shape deformed due to any cause. All gabion baskets intact, structure stands as designed. Missing rock Any rock missing that could cause gabion to loose structural integrity. No rock missing. Manhole/Chamber Wom or damaged post, baffles or side of chamber Structure dissipating flow deteriorates to'/: or original size or any concentrated worn spot exceeding one square foot which would make structure unsound. Structure is in no danger of failing. Damage to wall, frame, bottom, and/or top slab Cracks wider than 1/2 -inch or any evidence of soil entering the structure through cracks, or maintenance inspection personnel determines that the structure is not structurally sound. Manhole/chamber is sealed and structurally sound. Damaged pipe joints Cracks wider than'/cinch at the joint of the inlet/outlet pipes or any evidence of soil entering the structure at the joint of the inlet/outlet pipes. No soil or water enters and no water discharges at the joint of inlet/outlet pipes.. 2016 Surface Water Design Manual — Appendix A A-13 4/24/2016 APPENDIX A MAINTENANCE REQUIREMENTS FLOW CONTROL, CONVEYANCE, AND WQ FACILITIES w k Yj+�1M! y R-1 C Maintenance Component Defect or Problem Conditions When Maintenance is Needed Results Expected When Maintenance is Performed Site Trash or litter Any trash and debris which exceed 1 cubic foot per 1,000 square feet (this is about equal to the amount of trash it would take to fill up one standard size office garbage can). In general, there should be no visual evidence of dumping. Trash and debris cleared from site. Noxious weeds Any noxious or nuisance vegetation which may constitute a hazard to County personnel or the public. Noxious and nuisance vegetation removed according to applicable regulations. No danger of noxious vegetation where County personnel or the public might normally be. Contaminants and pollution Any evidence of contaminants or pollution such as oil, gasoline, concrete slurries or paint. Materials removed and disposed of according to applicable regulations. Source control BMPs implemented if appropriate. No contaminants present other than a surface oil film. Grass/groundcover Grass or groundcover exceeds 18 inches In height. Grass or groundcover mowed to a height no greater than 6 Inches. Trees and Shrubs Hazard Any tree or limb of a tree identified as having a potential to fall and cause property damage or threaten human life. A hazard tree identified by a qualified arborist must be removed as soon as possible. No hazard trees In facility. Damaged Limbs or parts of trees or shrubs that are split or broken which affect more than 25% of the total foliage of the tree or shrub. Trees and shrubs with less than 5% of total foliage with split or broken limbs. Trees or shrubs that have been blown down or knocked over. No blown down vegetation or knocked over vegetation. Trees or shrubs free of injury. Trees or shrubs which are not adequately supported or are leaning over, causing exposure of the roots. Tree or shrub in place and adequately supported; dead or diseased trees removed. 4/24/2016 2016 Surface Water Design Manual — Appendix A A-16 APPENDIX A MAINTENANCE REQUIREMENTS FLOW CONTROL, CONVEYANCE, AND WQ FACILITIES 4/24/2016 A-30 2016 Surface Water Design Manual — Appendix A Maintenance Component Defect or Problem Condition When Maintenance Is Needed Results Expected When Maintenance Is Performed Facility Documentation Update facility Inspection record after each inspection. Maintenance records are up to date. Provide certification of replaced filter media. Filter media is certified to meet Stormfiilter' specifications. Site Trash and debris Any trash or debris which impairs the function of the facility. Trash and debris removed from facility. Contaminants and pollution Any evidence of contaminants or pollution such as oils, gasoline, concrete slurries or paint. Materials removed and disposed of according to applicable regulations. Source control BMPs implemented if appropriate. No contaminants present other than a surface oil film. Life cycle System has not been inspected for three years. Facility is re -inspected and any needed maintenance performed. Vault Treatment Area Sediment on vault floor Greater than 2 Inches of sediment. Vault is free of sediment. Sediment on top of cartridges Greater than'/a inch of sediment. Vault is free of sediment. Multiple scum lines above top of cartridges Thick or multiple scum lines above top of cartridges. Probably due to plugged canisters or underdrain manifold. Cause of plugging corrected, canisters replaced if necessary. Vault Structure Damage to wall, Frame, Bottom, and/or Top Slab Cracks wider than % -inch and any evidence of soil particles entering the structure through the cracks, or qualified inspection personnel determines the vault is not structurally sound. Vault replaced or repaired to design specifications. Baffles damaged Baffles corroding, cracking warping, and/or showing signs of failure as determined by maintenance/inspection person. Repair or replace baffles to specification. Filter Media Standing water in vault 9 inches or greater of static water In the vault for more than 24 hours following a rain event and/or overflow occurs frequently. Probably due to plugged filter media, underdrain or outlet pipe. No standing water in vault 24 hours after a rain event. Short circuiting Flows do not properly enter filter cartridges. Flows go through filter media. Underdrains and Clean -Outs Sediment/debris Underdrains or clean -outs partially plugged or filled with sediment and/or debris. Underdrains and clean -outs free of sediment and debris. Inlet/Outlet Pipe Sediment accumulation Sediment filling 20% or more of the pipe. Inlet/outlet pipes clear of sediment. Trash and debris Trash and debris accumulated in inlet/outlet pipes (includes floatables and non-floatables). No trash or debris in pipes. Damaged Cracks wider than '% -inch at the joint of the inlet/outlet pipes or any evidence of soil entering at the joints of the inlet/outlet pipes. No cracks more than 'b -inch wide at the joint of the inlet/outlet pipe. Access Manhole Coverflid not in place Cover/lid is missing or only partially in place. Any open manhole requires immediate maintenance. Manhole access covered. Locking mechanism not working Mechanism cannot be opened by one maintenance person with proper tools. Bolts cannot be seated. Self-locking cover/lid does not work. Mechanism opens with proper tools. Cover/lid difficult to remove One maintenance person cannot remove cover/lid after applying 80 lbs of lift. Cover/lid can be removed and reinstalled by one maintenance person. 4/24/2016 A-30 2016 Surface Water Design Manual — Appendix A APPENDIX A MAINTENANCE REQUIREMENTS FOR FLOW CONTROL, CONVEYANCE, AND WQ FACILITIES iz x Maintenance Component Defect or Problem Condition When Maintenance is Needed Results Expected When Maintenance Is Performed Ladder rungs unsafe Missing rungs, misalignment, rust, or cracks. Ladder meets design standards. Allows maintenance person safe access. Large access doors/plate Damaged or difficult to open Large access doors or plates cannot be opened/removed using normal equipment. Replace or repair access door so it can opened as designed. Gaps, doesn't cover completely Large access doors not flat and/or access opening not completely covered. Doors close flat and cover access opening completely. Lifting Rings missing, rusted Lifting rings not capable of lifting weight of door or plate. Lifting rings sufficient to lift or remove door or plate. Inspection Frequency Maintenance conditions are site-specific, depending on pollutant loading. FIRST YEAR POST CONSTRUCTION: Months y during wet season, every other month during dry season FOLLOWING FIRST YEAR: Continue monthly until site-specific frequency is established, then follow that schedule AT A MINIMUM, FOLLOWING FIRST YEAR: Annually (or quarterly if used as primary treatment) and following significant storms. Inspect Stormfilter facility for any maintenance deficiencies; maintain or replace as required per established site-specific schedule and manufacturers requirements. 2016 Surface Water Design Manual — Appendix A 4/24/2016 A-31 APPENDIX A MAINTENANCE REQUIREMENTS FOR FLOW CONTROL, CONVEYANCE, AND WQ FACILITIES Mp ' V rA �A t t Atm vGE/wED D '' BMP Maintenance Component Defect or Problem Condition When Maintenance Is Needed Results Expected When Maintenance is Performed Site Trash and debris Trash and debris accumulated on the native vegetated surface/native vegetated landscape site. Native vegetated surface site free of any trash or debris. Vegetation Native vegetation type Less than two species each of native trees, shrubs, and groundcover occur in the design area. A minimum of two species each of native trees, shrubs, and groundcover is established and healthy. Native vegetated area Less than 90% if the required vegetated area has healthy growth. A minimum of 90% of the required vegetated area has healthy growth. Undesirable vegetation Weeds, blackberry, and other undesirable plants are Invading more than 10% of vegetated area. Less than 10% undesirable vegetation occurs in the required native vegetated surface area. Vegetated Area Soil compaction Soil in the native vegetation area compacted. Less than 8% of native vegetation area is compacted. Insufficient area Less than 3.5 square feet of native vegetation area for every 1 square foot of impervious surface. A minimum of 3.5 square feet of native vegetation area for every 1 square foot of impervious surface. Excess slope Slope of native vegetation area greater than 15%. Slope of native growth area does not exceed 15%. Inspection Frequency Annually Inspect native vegetation area for any defects of deficiencies �$N■�/Iry�J ,�/y� yyy, {,�yyF 5�yi,,i� ��yy/,� fy,:(y, Maintenance Component . Defect or Problem Conditions When Maintenance Is Needed Results Expected When Maintenance Is Performed Preventative Blocking, obstructions Debris or trash limiting flow into perforated pipe system or outfall of BMP is plugged or otherwise nonfunctioning. Outfall of BMP is receiving designed flows from perforated pipe connection. Inflow Inflow Impeded Inflow Into the perforated pipe Is partially or fully blocked or altered to prevent flow from getting into the pipe. Inflow to the perforated pipe is unimpeded. Pipe Trench Area Surface compacted Ground surface over the perforated pipe trench is compacted or covered with impermeable material. Ground surface over the perforated pipe is not compacted and free of any Impervious cover. Outflow Outflow Impeded Outflow from the perforated pipe Into the public drainage system is blocked. Outflow to the public drainage system is unimpeded. Outfall Area Erosion or landslides Existence of the perforated pipe is causing or exasperating erosion or landslides. Perforated pipe system is sealed off and an alternative BMP Is implemented. Inspection Frequency Annually and prior to and following significant storms. Perforated pipe system is operating as designed. 2016 Surface Water Design Manual — Appendix A A-37 4/24/2016 Maintenance Overview Perkfilter State and local regulations require all stormwater management systems to be inspected on a periodic basis and maintained as necessary to ensure performance and protect downstream receiving waters. Maintenance prevents excessive pollutant buildup that can limit system performance by reducing the operating capacity and increasing the potential for scouring of pollutants during periods of high flow. Inspection and Maintenance Frequency The PerkFilter should be inspected on a periodic basis, typically twice per year, and maintained as required. Initially, inspections of a new system should be conducted more frequently to help establish an appropriate site- specific inspection frequency. The maintenance frequency will be driven by the amount of runoff and pollutant loading encountered by a given system. In most cases, the optimum maintenance interval will be one to three years. Inspection and maintenance activities should be performed only during dry weather periods. Inspection Equipment The following equipment is helpful when conducting PerkFilter inspections: • Recording device (pen and paper form, voice recorder, iPad, etc.) • Suitable clothing (appropriate footwear, gloves, hardhat, safety glasses, etc.) • Traffic control equipment (cones, barricades, signage, flagging, etc.) • Socket and wrench for bolt -down access covers • Manhole hook or pry bar • Flashlight • Tape measure • Measuring stick or sludge sampler • Long -handled net (optional) Inspection Procedures PerkFilter inspections are visual and may be conducted from the ground surface without entering the unit. To complete an inspection, safety measures including traffic control should be deployed before the access covers are removed. Once the covers have been removed, the following items should be checked and recorded (see form provided at the end of this document) to determine whether maintenance is required: Inspect the internal components and note whether there are any broken or missing parts. In the unlikely event that internal parts are broken or missing, contact Oldcastle Infrastructure at (800) 579-8819 to determine appropriate corrective action. • Note whether the inlet pipe is blocked or obstructed. The outlet pipe is covered by a removable outlet hood and cannot be observed without entering the unit. • Observe, quantify and record the accumulation of floating trash and debris in the inlet chamber. The significance of accumulated floating trash and debris is a matter of judgment. A Tong -handled net may be used to retrieve the bulk of trash and debris at the time of inspection if full maintenance due to accumulation of floating oils or settled sediment is not yet warranted. 5 • Observe, quantify and record the accumulation of oils in the inlet chamber. The significance of accumulated floating oils is a matter of judgment. However, if there is evidence of an oil or fuel spill, immediate maintenance by appropriate certified personnel is warranted. • Observe, quantify and record the average accumulation of sediment in the inlet chamber and treatment chamber. A calibrated dipstick, tape measure, or sludge sampler may be used to determine the amount of accumulated sediment in each chamber. The depth of sediment may be determined by calculating the difference between the measurement from the rim of the PerkFilter to the top of the accumulated sediment, and the measurement from the rim of the PerkFilter to the bottom of the PerkFilter structure. Finding the top of the accumulated sediment below standing water takes some practice and a light touch, but increased resistance as the measuring device is lowered toward the bottom of the unit indicates the top of the accumulated sediment. Finally, observe, quantify and record the amount of standing water in the treatment chamber around the cartridges. If standing water is present, do not include the depth of sediment that may have settled out below the standing water in the measurement. Maintenance Triggers Maintenance should be scheduled if any of the following conditions are identified during the inspection: • Internal components are broken or missing. • Inlet piping is obstructed. • The accumulation of floating trash and debris that cannot be retrieved with a net and/or oil in the inlet chamber is significant. • There is more than 6" of accumulated sediment in the inlet chamber. • There is more than 4" of accumulated sediment in the treatment chamber. • There is more than 4" of standing water in the treatment chamber more than 24 hours after end of rain event. • A hazardous material release (e.g. automotive fluids) is observed or reported. • The system has not been maintained for 3 years (wet climates) to 5 years (dry climates). Maintenance Equipment The following equipment is helpful when conducting PerkFilter maintenance: • Suitable clothing (appropriate footwear, gloves, hardhat, safety glasses, etc.) • Traffic control equipment (cones, barricades, signage, flagging, etc.) • Socket and wrench for bolt -down access covers • Manhole hook or pry bar • Confined space entry equipment, if needed • Flashlight • Tape measure • 9/16" socket and wrench to remove hold-down struts and filter cartridge tops • Replacement filter cartridges • Vacuum truck with water supply and water jet Contact Oldcastle Infrastructure at (800) 579-8819 for replacement filter cartridges. A lead time of four weeks is recommended. s Maintenance Procedures Maintenance should be conducted during dry weather when no flow is entering the system. Confined space entry is necessary to maintain vault and manhole PerkFilter configurations. Only personnel that are OSHA Confined Space Entry trained and certified may enter underground structures. Confined space entry is not required for catch basin PerkFilter configurations. Once safety measures such as traffic control are deployed, the access covers may be removed and the following activities may be conducted to complete maintenance: • Remove floating trash, debris and oils from the water surface in the inlet chamber using the extension nozzle on the end of the boom hose of the vacuum truck. Continue using the vacuum truck to completely dewater the inlet chamber and evacuate all accumulated sediment from the inlet chamber. Some jetting may be required to fully remove sediment. The inlet chamber does not need to be refilled with water after maintenance is complete. The system will fill with water when the next storm event occurs. • Remove the hold-down strut from each row of filter cartridges and then remove the top of each cartridge (the top is held on by four 9/16" bolts) and use the vacuum truck to evacuate the spent media. When empty, the spent cartridges may be easily lifted off their slip couplers and removed from the vault. The couplers may be left inserted into couplings cast into the false floor to prevent sediment and debris from being washed into the outlet chamber during washdown. • Once all the spent cartridges have been removed from the structure, the vacuum truck may be used to evacuate all accumulated sediment from the treatment chamber. Some jetting may be required to fully remove sediment. Take care not to wash sediment and debris through the openings in the false floor and into the outlet chamber. All material removed from the PerkFilter during maintenance including the spent media must be disposed of in accordance with local, state, and/or federal regulations. In most cases, the material may be handled in the same manner as disposal of material removed from sumped catch basins or manholes. • Place a fresh cartridge in each cartridge position using the existing slip couplers and urethane bottom caps. If the vault is equipped with stacked cartridges, the existing outer and inner interconnector couplers must be used between the stacked cartridges to provide hydraulic connection. Transfer the existing vent tubes from the spent cartridges to the fresh cartridges. Finally, refit the struts to hold the fresh cartridges in place. • Securely replace access covers, as appropriate. • Make arrangements to return the empty spent cartridges to Oldcastle Infrastructure. PerkFilter Inspection and Maintenance Log ,Loci ,/, // / .. ...I .,ve %./ l /(,.214' i.,.. n�.✓/ r i .,. .i,. ,,, ,.. ., ,r, ,.. is. .. / ."✓fl ., Condition of Internal Components Good Damaged I 1 Missing Notes: Inlet or Outlet Blockage or Obstruction 1 Ives 1 INo Notes: Floating Trash and Debris Significant Not Significant Notes: Floating Oils 1 Significant Not Significant 1 I Spill Notes: Sediment Depth in Inlet Chamber 1 Inches of Sediment: Notes: Sediment Depth in Treatment Chamber 1 Inches of Sediment: Notes: Standing Water in Treatment Chamber Inches of Standing Water: Notes: Mfn,e a aR /ui ,