HomeMy WebLinkAboutRS_Technical Information Report_170815_v1
Abbreviated Technical Information Memorandum
(For Repair and Maintenance)
Vantage Glen Mobile Home Park
18100 107th Street S.E.
Renton, Washington 98055
Parcel No. 322305-9361
Prepared for:
King County Housing Authority
Attn: Hugh Watkinson
600 Andover Park West
Seattle, WA 98188-3326
August 8, 2017
Innova Architects Job No. 17-030
Prepared by: Jason Hein
Reviewed by: Paul McCormick
“I hereby state that this Abbreviated Technical Information Report for the Vantage Glen Mobile Home
Park, Renton, Washington has been prepared by me or under my supervision and meets the standard of
care and expertise which is usual and customary in this community for professional engineers. I
understand that the City of Renton does not and will not assume liability for the sufficiency, suitability, or
performance of drainage facilities prepared by me.”
08/08/201
7
2
Section 1 – Project Description
The proponent, King County Housing Authority (KCHA), wishes to provide maintenance and
repair to their existing drainage system located on Parcel No.322305-9361. We expect that the
scope of work falls within guidelines of maintenance and repair. This Abbreviated Technical
Information Memorandum (For Repair and Maintenance) is submitted with the Civil Construction
Permit plan package, and is prepared to address the maintenance concerns that exist at the
site.
The project site is located at 104th Avenue SE, as shown on the Site Map (Exhibit 1), which
follows. The site is located within the Vantage Glen development at 18100 107th Place S.E in
Renton, Washington. The proposed work scope is limited to connecting roof drains at Lots 111,
112, 113, 114, 115 and 116 to the existing storm system, and installing two catchbasins and 10-
inch storm line on the east side of 104th Avenue SE, near the point of tangent of the cul-de-sac.
This work is proposed to address ponding on Lots 111, 112, 113, 114, 115 and 116 and on
104th Avenue SE near Lot 111, as shown on the photographs provided as Exhibits 2, 3 and 4.
The original design intent was for lot drainage to flow to the eastern curb line of 104th Avenue
SE. Cul-de-sac drainage was intended to flow to the south along the eastern curb line to a Type
1 catchbasin that conveys drainage to a detention pond, as shown in Exhibit 5. However,
grading in the asbuilt condition allows drainage to pond at the cul-de-sac near Lot 111, and roof
drainage at Lots 111, 112, 113, 114, 115, and 116 pond in the yards. The work proposed is
intended to repair the existing ponding condition.
Section 2 – Existing Site Conditions
As noted in the section above, there is ponding in the yards of Lots 111, 112, 113, 114, 115 and
116, primarily due to roof drainage and low points in the lot yards. Downspouts at these lots are
not tight-lined, and drainage flows from the downspouts to low points within the yards. There is
a low point in the cul-de-sac at 104th Avenue SE, near the point of tangent at the eastern curb
line, causing ponding, as shown in the site photographs, provided as Exhibits 2, 3 and 4. The
original design plans show that the drainage intent was for cul-de-sac drainage to flow to the
south at 1-percent, and to the east at 0.5-percent slope to the curb line. 104th Avenue SE is a
super elevated road section, sloping from the west to the east. Lot drainage, per the original
design, was intended to slope to the roadway curb line.
Section 3 – Adjacent Areas
The site is located between 105th Pl SE to the east and Wells Avenue S to the west, as shown
on the Site Plan provided as Exhibit 1. The entrance to the development, Vantage Glen, is via
SE 180th Street, which is west of the intersection of SE 180th Street and Highway 515.
Section 4 – Proposed Solution
This project proposes only maintenance and repair work. No new impervious or pervious areas
are proposed. Work is limited to utility trenching and installation of 226 lineal feet of 10-inch
storm line on the south side of 104th Avenue SE cul-de-sac, in order to alleviated ponding in the
roadway. Work also includes the installation of 378 lineal feet of 6-inch roof drain and cleanouts
to tight-line roof drainage to alleviate ponding in the yards at Lots 111, 112, 113, 114, 115 and
3
116. The proposed 10-inch storm line in the roadway (104th Avenue SE) will connect to an
existing Type 1 catchbasin. This existing catchbasin has a 12-inch perforated outlet pipe that
conveys drainage to the south to an existing detention pond. Roof drainage from Lots 111, 112,
113, 114, 115 and 116 is proposed to be tight-lined and connected to the new 10-inch storm line
and to an existing 8-inch storm line, which is located along the eastern side of Lots 114, 115,
and 116, as shown on Exhibit 6. Storm line trenching in the roadway (104th Avenue SE) results
in 1,780 square feet of asphalt patching; and, utilities trenching for the roof drains in the lots
results in 963 square feet of grass re-seeding. Proposed asphalt patching results in less than
the 2,000 square foot threshold for replaced impervious surface, and the project results in less
than the 7,000 square foot threshold of land disturbance. Also as noted above, drainage from
the project site area drains to an existing detention pond, which was sized for the development
(Vantage Glen), including drainage from the subject site area.
4
EXIBIT 1
SITE MAP
5
EXHIBIT 2
YARD PONDING AT LOTS
6
EXHIBIT 3
104TH AVENUE SE PONDING (EAST CURB LINE. LOOKING WEST)
7
EXHIBIT 4
104TH AVENUE SE PONDING (EAST CURB LINE, LOOKING NORTH)
8
EXHIBIT 5
ORIGINAL DESIGN PLANS – VANTAGE GLEN DEVELOPMENT
12
EXHIBIT 6
PROPOSED DESIGN PLANS
UTILITY SPECIFICATION
SURFACE WATER DRAINAGE NOTES AND SPECIFICATIONS
1.BEFORE ANY CONSTRUCTION OR DEVELOPMENT ACTIVITY OCCURS, A
PRE-CONSTRUCTION MEETING MUST BE HELD WITH THE CITY OF RENTON PLAN
REVIEWER.
2.ALL CONSTRUCTION SHALL BE IN ACCORDANCE WITH THE CURRENT STANDARD
SPECIFICATION FOR ROAD, BRIDGE AND MUNICIPAL CONSTRUCTION PREPARED BY
WSDOT AND THE AMERICAN PUBLIC WORKS ASSOCIATION (APWA), AS AMENDED BY THE
CITY OF RENTON PUBLIC WORKS DEPARTMENT.
3.THE SURFACE WATER DRAINAGE SYSTEM SHALL BE CONSTRUCTED ACCORDING TO THE
APPROVED PLANS, WHICH ARE ON FILE IN THE PUBLIC WORKS DEPARTMENT
4.A COPY OF THESE APPROVED PLANS MUST BE ON THE JOB SITE WHENEVER
CONSTRUCTION IS IN PROGRESS.
5.DATUM FOR VERTICAL CONTROL SHALL BE NORTH AMERICAN VERTICAL DATUM 1988
METERS, AND FOR HORIZONTAL CONTROL SHALL BE NORTH AMERICAN DATUM 1983/1991
METERS UNLESS OTHERWISE APPROVED BY THE CITY OF RENTON PUBLIC WORKS
DEPARTMENT. REFERENCE BENCHMARK AND ELEVATIONS ARE NOTED ON THE PLANS.
6.ALL SEDIMENTATION/EROSION FACILITIES MUST BE IN OPERATION PRIOR TO CLEARING
AND BUILDING CONSTRUCTION, AND THEY MUST BE SATISFACTORILY MAINTAINED UNTIL
CONSTRUCTION IS COMPLETED AND THE POTENTIAL FOR ON-SITE EROSION HAS
PASSED.
7.ALL RETENTION/DETENTION FACILITIES MUST BE INSTALLED AND IN OPERATION PRIOR
TO OR IN CONJUNCTION WITH ALL CONSTRUCTION ACTIVITY UNLESS OTHERWISE
APPROVED BY THE PUBLIC WORKS DEPARTMENT, SURFACE WATER UTILITY SECTION.
8.GRASS SEED MAY BE APPLIED BY HYDROSEEDING. THE GRASS SEED MIXTURE, OTHER
THAN CITY OF RENTON APPROVED STANDARD MIXES, SHALL BE SUBMITTED BY A
LANDSCAPE ARCHITECT AND APPROVED BY THE PUBLIC WORKS DEPARTMENT,
SURFACE WATER UTILITY SECTION.
9.ALL PIPE AND APPURTENANCES SHALL BE LAID ON A PROPERLY PREPARED
FOUNDATION IN ACCORDANCE WITH SECTION 7-02.3(1) OF THE CURRENT STATE OF
WASHINGTON STANDARD SPECIFICATION FOR ROAD AND BRIDGE CONSTRUCTION. THIS
SHALL INCLUDE NECESSARY LEVELING OF THE TRENCH BOTTOM OR THE TOP OF THE
FOUNDATION MATERIAL, AS WELL AS PLACEMENT AND COMPACTION OF REQUIRED
BEDDING MATERIAL, TO UNIFORM GRADE SO THAT THE ENTIRE LENGTH OF THE PIPE
WILL BE SUPPORTED ON A UNIFORMLY DENSE, UNYIELDING BASE. ALL PIPE BEDDING
SHALL BE APWA CLASS "C", THE THE EXCEPTION OF PVC PIPE. ALL TRENCH BACKFILL
SHALL BE COMPACTED TO MINIMUM 96% FOR PAVEMENT AND STRUCTURAL FILL AND
90% OTHERWISE PER ASTM D-1557-70. PEA GRAVEL BEDDING SHALL BE 6 INCHES OVER
AND UNDER PVC PIPE.
10.GALVANIZED STEEL PIPE AND ALUMINIZED STEEL PIPE FOR ALL DRAINAGE FACILITIES
SHALL HAVE ASPHALT TREATMENT #1 OR BETTER INSIDE AND OUTSIDE.
11.STRUCTURES SHALL NOT BE PERMITTED WITHIN 10 FEET OF THE SPRING LINE OF ANY
STORM DRAINAGE PIPE, OR 15 FEET FROM THE TOP OF ANY CHANNEL BANK.
12.ALL CATCH BASIN GRATES SHALL BE DEPRESSED 0.10 FEET BELOW PAVEMENT LEVEL.
13.OPEN CUT ROAD CROSSINGS THROUGH EXISTING PUBLIC RIGHT OF WAY WILL NOT BE
ALLOWED UNLESS SPECIFICALLY APPROVED BY THE CITY OF RENTON
PLANNING/BUILDING/PUBLIC WORKS ADMINISTRATOR.
14.ROCK FOR EROSION PROTECTION OF ROADSIDE DITCHES, WHERE REQUIRED, SHALL BE
OF SOUND QUARRY ROCK PLACED TO A DEPTH OF ONE (1) FOOT AND MUST MEET THE
FOLLOWING SPECIFICATIONS:
4 - 8 INCH ROCK / 40 - 70% PASSING;
2 - 4 INCH ROCK / 30 - 40% PASSING; AND
LESS THAN 2 INCH ROCK / 10 - 20% PASSING.
15.ALL BUILDING DOWNSPOUTS AND FOOTING DRAINS SHALL BE CONNECTED TO THE
STORM DRAINAGE SYSTEM, UNLESS APPROVED BY THE CITY PLAN REVIEWER OR
SURFACE WATER UTILITY SECTION. AN ACCURATELY DIMENSIONED, CERTIFIED AS-BUILT
DRAWING OF THIS DRAINAGE SYSTEM WILL BE SUBMITTED TO THE CITY UPON
COMPLETION.
16.ISSUANCE OF THE BUILDING OR CONSTRUCTION PERMITS BY THE CITY OF RENTON
DOES NOT RELIEVE THE OWNER OF THE CONTINUING LEGAL OBLIGATION AND/OR
LIABILITY CONNECTED WITH STORM SURFACE WATER DISPOSITION. FURTHER, THE CITY
OF RENTON DOES NOT ACCEPT ANY OBLIGATION FOR THE PROPER FUNCTIONING AND
MAINTENANCE OF THE SYSTEM PROVIDED DURING CONSTRUCTION.
17.THE CONTRACTOR SHALL BE RESPONSIBLE FOR PROVIDING ADEQUATE SAFEGUARD,
SAFETY DEVICES, PROTECTIVE EQUIPMENT, FLAGGERS, AND ANY OTHER NEEDED
ACTIONS TO PROTECT THE LIFE, HEALTH, AND SAFETY OF THE PUBLIC, AND O PROTECT
PROPERTY IN CONNECTION WITH THE PERFORMANCE OF WORK COVERED BY THE
CONTRACT. ANY WORK WITHIN THE TRAVELED RIGHT OF WAY THAT MAY INTERRUPT
NORMAL TRAFFIC FLOW SHALL REQUIRE A TRAFFIC CONTROL PLAN APPROVED BY THE
PUBLIC WORKS DEPARTMENT, TRANSPORTATION SYSTEM DIVISION. ALL SECTIONS OF
THE WSDOT STANDARD SPECIFICATIONS 1-07-23 TRAFFIC CONTROL SHALL APPLY.
18.SPECIAL DRAINAGE MEASURES WILL BE REQUIRED IF THE PROJECT LOCATION IS WITHIN
THE AQUIFER PROTECTION AREA (APA).
UTILITY SPECIFICATION
EROSION CONTROL NOTES
1.BEFORE ANY CONSTRUCTION OR DEVELOPMENT ACTIVITY OCCURS, A PRE-CONSTRUCTION MEETING
MUST BE HELD WITH THE CITY OF RENTON, PUBLIC WORKS DESIGN ENGINEER.
2.ALL LIMITS OF CLEARING AND AREAS OF VEGETATION PRESERVATION AS PRESCRIBED ON THE PLAN(S)
SHALL BE CLEARLY FLAGGED IN THE FIELD AND OBSERVED DURING CONSTRUCTION.
3.ALL REQUIRED SEDIMENTATION/EROSION CONTROL FACILITIES MUST BE CONSTRUCTED AND IN
OPERATION PRIOR TO LAND CLEARING AND/OR CONSTRUCTION TO ENSURE THAT SEDIMENT LADEN
WATER DOES NOT ENTER THE NATURAL DRAINAGE SYSTEM. ALL EROSION AND SEDIMENT FACILITIES
SHALL BE MAINTAINED IN A SATISFACTORY CONDITION UNTIL SUCH TIME THAT CLEARING AND/OR
CONSTRUCTION IS COMPLETED AND POTENTIAL FOR ON-SITE EROSION HAS PASSED. THE
IMPLEMENTATION, MAINTENANCE, REPLACEMENT AND ADDITIONS TO EROSION/SEDIMENTATION CONTROL
SYSTEM SHALL BE THE RESPONSIBILITY OF THE PERMITEE.
4.THE EROSION AND SEDIMENTATION CONTROL SYSTEMS DEPICTED ON THIS DRAWING ARE INTENDED TO
BE MINIMUM REQUIREMENTS TO MEET ANTICIPATED SITE CONDITIONS. AS CONSTRUCTION PROGRESSES
AND UNEXPECTED OR SEASONAL CONDITIONS DICTATE, THE PERMITEE SHALL ANTICIPATE THAT MORE
EROSION AND SEDIMENTATION CONTROL FACILITIES WILL BE NECESSARY TO ENSURE COMPLETE
SILTATION CONTROL ON THE PROPOSED SITE. DURING THE COURSE OF CONSTRUCTION, IT SHALL BE THE
OBLIGATION AND RESPONSIBILITY OF THE PERMITEE TO ADDRESS ANY NEW CONDITIONS THAT MAY BE
CREATED BY THE ACTIVITIES AND TO PROVIDE ADDITIONAL FACILITIES, OVER AND ABOVE MINIMUM
REQUIREMENTS, AS MAY BE NEEDED, TO PROTECT ADJACENT PROPERTIES AND WATER QUALITY OF THE
RECEIVING DRAINAGE SYSTEM.
5.APPROVAL OF THIS PLAN IS FOR EROSION/SEDIMENTATION CONTROL ONLY. IT DOES NOT CONSTITUTE AN
APPROVAL OF STORM DRAINAGE DESIGN, SIZE NOR LOCATION OF PIPES, RESTRICTORS, CHANNELS, OR
RETENTION FACILITIES.
6.DURING THE TIME PERIOD OF OCTOBER 1ST THROUGH APRIL 30TH, ALL PROJECT DISTRIBUTED SOIL
AREAS GREATER THAN 5,000 SQUARE FEET, THAT ARE TO BE LEFT UN-WORKED FOR MORE THAN 12
HOURS, SHALL BE COVERED BY MULCH, SODDING OR PLASTIC COVERING.
7.IN AN AREA WHICH HAS BEEN STRIPPED OF VEGETATION AND WHERE NOT FURTHER WORK IS
ANTICIPATED FOR A PERIOD 30 DAYS OR MORE, ALL DISTURBED AREAS MUST BE IMMEDIATELY
STABILIZED WITH MULCHING, GRASS PLANTING OR OTHER APPROVED EROSION CONTROL TREATMENT
APPLICABLE TO THE TIME OF YEAR. BRASS SEEDING ALONE WILL BE ACCEPTABLE ONLY DURING THE
MONTHS OF APRIL THROUGH SEPTEMBER, INCLUSIVE. SEEDING MAY PROCEED, HOWEVER, WHENEVER IT
IS IN THE INTEREST OF THE PERMITEE, BUT MUST BE AUGMENTED WITH MULCHING, NETTING OR OTHER
TREATMENT APPROVED BY THE CITY OF RENTON, OUTSIDE THE SPECIFIED TIME PERIOD.
8.FOR ALL EROSION/SEDIMENTATIN CONTROL PONDS WHERE THE DEAD STORAGE DEPTH EXCEEDS 6
INCHES, A FENCE IS REQUIRED WITH A MINIMUM HEIGHT OF THREE (3) FEET, 3:1 SIDE SLOPE.
9.A TEMPORARY GRAVEL CONSTRUCTION ENTRANCE, 24 FEET x 50 FEET x 8 INCHES OF 4 TO 6 INCH
QUARRY SPALLS SHALL BE LOCATED AT ALL POINTS OF VEHICULAR INGRESS AND EGRESS TO THE
CONSTRUCTION SITE.HIGHWAY 167108TH AVE SE176TH
STREET
S CA
R
R
R
O
A
D
VICINITY MAP
SITE
PROJECT
LOCATION
CONTACTS
DEVELOPER
KING COUNTY HOUSING AUTHORITY
HUGH WATKINSON
CAPITAL CONSTRUCTION PROJECT MANAGER
600 ANDOVER PARK WEST
SEATTLE, WA 98188
SURVEYOR
TRIAD
GREGORY T. JUNEAU, PLS
20300 WOODINVILLE SNOHOMISH
ROAD NE, SUITE A
WOODINVILLE, WA 98072
PH 425-415-2041
CIVIL ENGINEER
INNOVA ARCHITECTS
PAUL MCCORMIK, PE
950 PACIFIC AVENUE, SUITE 450
TACOMA, WA 98402
PH 253-572-4903
UTILITIES
WATER - CITY OF RENTON
SEWER - CITY OF RENTON
STORM - CITY OF RENTON
TELEPHONE - QWEST / CENTURY LINK
POWER - PUGET SOUND ENERGY
NAT GAS - PUGET SOUND ENERGY
A PORTION OF THE SW 1/4 OF THE NE 1/4 OF SECTION 32, TOWNSHIP 23, RANGE 5 E., W.M.
CITY OF RENTON, KING COUNTY, WASHINGTON
KING COUNTY HOUSING AUTHORITY-VANTAGE GLEN MOBILE HOME PARK
Know what's
R
SITE DETAILS
ADDRESS:18102 107TH PL SE, RENTON, WA
PARCEL:322305-9361
ZONING:RESIDENTIAL MANUFACTURED HOMES
GROSS SITE AREA: 6) $&5(6
PROJECT SITE AREA:6) $&5(6
AUTOCAD FILE
AUTOCAD DRAWING FILES ARE AVAILABLE FOR
SITE LAYOUT UPON REQUEST.
GENERAL NOTES TAKEN FROM SURVEY
1.) BOUNDARY LINES SHOWN ARE BASED ON RENTON SHORT PLAT #LUA-08-137-SHPL
RECORDED IN VOLUME 268 OF SURVEYS, PAGES 168-170, IN KING COUNTY, WASHINGTON.
2.) INSTRUMENTATION FOR THIS SURVEY WAS A TRIMBLE VX SPATIAL STATION.
PROCEDURES USED IN THIS SURVEY WERE FIELD TRAVERSE, MEETING OR EXCEEDING
STANDARDS SET BY WAC 332-130-090.
3.) THE INFORMATION DEPICTED ON THIS MAP REPRESENTS THE RESULTS OF A SURVEY
MADE IN MAY 2017 AND CAN ONLY BE CONSIDERED AS INDICATING THE GENERAL CONDITION
EXISTING AT THAT TIME.
4.) SANITARY SEWER AND STORM DRAINAGE FACILITIES HAVE BEEN ASBUILT THROUGH
FIELD MEASUREMENTS OF THE LOCATION OF THE ACCESS STRUCTURES, THE TOP
ELEVATION OF THE STRUCTURES, AND THE INVERT ELEVATIONS OF ANY PIPES ENTERING OR
LEAVING THE STRUCTURES. IT IS STANDARD PRACTICE TO SHOW THE PIPES CONNECTING
THESE STRUCTURES AS STRAIGHT LINES. THIS IS ONLY AN ASSUMPTION AND THE ACTUAL
LOCATION OF THE PIPING MUST BE VERIFIED IN THE FIELD BY THE CONTRACTOR PRIOR TO
ANY CONSTRUCTION.
5.) NO EASEMENTS, RESTRICTIONS OR RESERVATION OF RECORD WHICH WOULD BE
DISCLOSED BY TITLE REPORT ARE SHOWN.
6.) PIPE ELEVATIONS SHOWN FOR INACCESSIBLE YARD DRAIN STRUCTURES ARE
APPROXIMATE TO THE TENTH OF A FOOT AND SHOULD BE FIELD VERIFIED PRIOR TO ANY
CONSTRUCTION ACTIVITY AS NECESSARY.
BASIS OF BEARING
RENTON SHORT PLAT #LUA-08-137-SHPL
RECORDED IN VOLUME 268 OF SURVEYS,
PAGES 168-170, IN KING COUNTY, WASHINGTON
LEGAL DESCRIPTION
LOT 2 AND TRACT C-2 OF RENTON SHORT PLAT
#LUA-08-137-SHPL RECORDED IN VOLUME 268 OF
SURVEYS, PAGES 168-170, IN KING COUNTY, WASHINGTON
HORIZONTAL DATUM
NAD83/91 - WASHINGTON NORTH ZONE
BASED ON TIES TO CITY OF RENTON
CONTROL POINTS NOS. 1866 AND 2110
VERTICAL DATUM
NAVD 88
BENCH MARK
ORIGINAL BENCHMARK:
CITY OF RENTON BENCH MARK NO. 2139
TOP OF 3" BRASS DISC SET IN DRILL HOLE OF LUMINARY STAMPED "KING
&2817<.&)$
($672)ȭ 108TH AVE NE AT THE INTERSECTION
:,7+6(3(7529,76.<5'$1'
:(672)%8,/',1*
ELEVATION = 400.99
(NOT SHOWN HEREON)
TBM "A"
TOP OF CHISELED SQUARE AT THE NORTHWEST CORNER OF THE WEST END
2)&21&5(7(6,'(:$/.217+(6287+6,'(2)6(7+67%(,1*
:(672)7+(,17(56(&7,212)6(7+67$1'7+$9(6($1'
WEST OF CENTERLINE CROSSWALK TO FRED MEYER SHOPPING CENTER.
ELEVATION = 384.73
(NOT SHOWN HEREON)
TBM "B"
TOP OF RAIL ROAD SPIKE SET IN WEST FACE POWER POLE 1.2' ABOVE GRADE
ON THE EAST SIDE OF 105TH PL SE LOCATED AT THE APPROXIMATE
EXTENSION OF THE NORTH PROPERTY LINE.
ELEVATION = 380.33
(NOT SHOWN HEREON)
CIVIL SHEET INDEX
SHEET NO SHEET TITLE
C1.0 COVER SHEET
C1.1 DRAINAGE PLAN AND PROFILE
C1.2 DETAILS
CONSTRUCTION SEQUENCE
1.CONTRACTOR TO ARRANGE AND ATTEND PRE-CONSTRUCTION MEETING.
2.POST SIGN WITH NAME AND PHONE NUMBER OF CSWPP/ESC SUPERVISOR
(MAY BE CONSOLIDATED WITH THE REQUIRED NOTICE OF CONSTRUCTION
SIGN.
3.FLAG OR FENCE CLEARING LIMITS.
4.INSTALL CATCH BASIN PROTECTION AND STORMWATER BMP AREA
PROTECTION AS REQUIRED.
5.INSTALL PERIMETER PROTECTION (SILT FENCE, BRUSH BARRIER, ETC.) AS
NEEDED.
6.MAINTAIN EROSION CONTROL MEASURES IN ACCORDANCE WITH APPENDIX
D OF THE CITY OF RENTON SURFACE WATER DESIGN MANUAL AND
MANUFACTURE'S RECOMMENDATIONS.
7.RELOCATE EROSION CONTROL MEASURES OR INSTALL NEW MEASURES SO
THAT AS SITE CONDITIONS CHANGE THE EROSION AND SEDIMENT
CONTROL AND POLLUTION PREVENTION IS ALWAYS IN ACCORDANCE WITH
THE CITY'S EROSION AND SEDIMENT CONTROL STANDARDS.
8.COVER ALL AREAS THAT WILL BE UNWORKED FOR MORE THAN SEVEN DAYS
DURING THE DRY SEASON OR TWO DAYS DURING THE WET SEASON WITH
STRAW, WOOD FIBER MULCH, COMPOST, OR EQUIVALENT.
9.STABILIZE ALL AREA THAT REACH FINAL GRADE WITHIN SEVEN DAYS.
10.SEED OR SOD ANY AREAS TO REMAIN UNWORKED FOR MORE THAN 30
DAYS.
11.CONSTRUCT STORM LINE AS SHOWN ON PLAN. PROVIDE PAVEMENT
PATCHING/RESTORATION AS SHOWN ON PLANS.
12.UPON COMPLETION OF THE PROJECT, ALL DISTURBER AREAS MUST BE
STABILIZED AND BMP'S REMOVED IF APPROPRIATE.###0000000-+0)A%1706;A*175+0)A#76*14+6;
8#06#)'A).'0A/1$+.'A*1/'A2#4-
5614/A5;56'/A':6'05+108#06#)'A).'0A5614/A&4#+0A':6'05+10A1(A.7# % %Ä8#06#)'A).'0A5614/A&4#+0A':6'05+10#Ä0000000
IN COMPLIANCE WITH CITY OF RENTON STANDARDS 24 24ÄP:\2017\17-030 KCHA Vantage Glen MHP\CAD\CIVIL\17-030_C.dwg, 8/7/2017 3:14:03 PM, jhein
SD
SD
SD
SD
SD
SD
SD
SD
SD
SD
SD
SD
SD
SD
EXISTING SURFACE
Know what's
R
A PORTION OF THE SW 1/4 OF THE NE 1/4 OF SECTION 32, TOWNSHIP 23, RANGE 5 E., W.M.
CITY OF RENTON, KING COUNTY, WASHINGTON
KING COUNTY HOUSING AUTHORITY-VANTAGE GLEN MOBILE HOME PARK
KEY NOTES:
1 REMOVE DEBRIS FROM EXISTING CATCH BASIN OR YARD DRAIN. SEE GENERAL NOTES.
2 CLEAN EXISTING STORM DRAIN PIPE. SEE GENERAL NOTES.
3 PROVIDE NEAT LINE SAWCUT AND PAVEMENT PATCH HOT TAR AND SEAL JOINT.
4 RECONSTRUCT IN-KIND CONCRETE ROLLED CURB AND GUTTER.
5 CONNECT NEW 10" STORM DRAIN TO EXISTING CATCH BASIN. SEE GENERAL NOTES.
6 PROTECT EXISTING UTILITIES AND STRUCTURES. RESTORE ANY DISTURBED AREA IN-KIND.
7 CONNECT EXISTING YARD DRAINS TO NEW 10" STORM LINE WITH WYE CONNECTION.
8 POTHOLE AND LOCATE EXISTING 8" STORM LINE. CONNECT DOWNSPOUTS TO EXISTING 8" STORM.
9 CONNECT EXISTING ROOF DRAIN DOWN SPOUT TO NEW 6" ROOF DRAIN AND PROVIDE CLEANOUT.
10 PROVIDE INLET PROTECTION. SEE DETAIL
1
2
3
1
2
1
1
1
5
46
46
GENERAL NOTES:
1.CONNECT SELECTED ROOF DOWN SPOUTS AS SHOWN ON PLAN.
2.PROVIDE CB TYPE 1 PER WSDOT STD PLAN B-5.20.
3.PROVIDE 6" ROOF DRAIN SCH 35 PIPING PER WSDOT STD SPEC 9-05.1(5). PIPE SLOPE
SHALL BE 0.5%.
4.PROVIDE 10" CPEP SMOOTH INTERIOUR PER WSDOT STD SPEC 9-05.1(6).
5.PROVIDE TOP SOIL AS REQURIED PER WSDOT STD SPEC 9-14.
6.PROVIDE ASPHALT PAVEMENT (HMA CL-1/2 PG 64-22) PER WEDOT STD SPEC 5-04.
7.PROVIDE CONCRETE ROLLED CURB IN-KIND CLASS 4000 PER WS DOT STD SPEC 5-05.
8.PROVIDE COMPACTION FOR ROCK BASE PER WSDOT STD SPEC 4-04.3(5).
9.PROVIDE VANED GRATE PER WSDOT STD PLAN B-30-30.01.
10.PROVIDE 6" STORM SEWER CLEAN OUT PER WSDOT STD PLAN B-85.40-00.
11.SEE SHEET C1.0 FOR EROSION CONTROL NOTES.
12.FIELD LOCATE DOWN SPOUTS (DS). CONNECT DOWN SPOUTS IDENTIFIED ON PLAN.
PROVIDE CLEAN OUT AT DOWN SPOUT CONNECTION.
13.CONTACT ENGINEER IF THERE ARE DISCREPANCY IN CONNECTING ROOF DRAINS AS
SHOWN ON PLANS.
8 8
8
7
7
9
9
9
9
10
10
IN COMPLIANCE WITH CITY OF RENTON STANDARDS 24 24Ä#Ä0000000
8#06#)'A).'0A5614/A&4#+0A':6'05+10% %Ä.7# A1(A8#06#)'A).'0A5614/A&4#+0A':6'05+105614/A5;56'/A':6'05+10
8#06#)'A).'0A/1$+.'A*1/'A2#4-
-+0)A%1706;A*175+0)A#76*14+6;###0000000P:\2017\17-030 KCHA Vantage Glen MHP\CAD\CIVIL\17-030_C.dwg, 8/7/2017 3:14:12 PM, jhein
Know what's
R
A PORTION OF THE SW 1/4 OF THE NE 1/4 OF SECTION 32, TOWNSHIP 23, RANGE 5 E., W.M.
CITY OF RENTON, KING COUNTY, WASHINGTON
KING COUNTY HOUSING AUTHORITY-VANTAGE GLEN MOBILE HOME PARK
CATCH BASIN TYPE 11 CATCH BASIN INSTALLATION2 CATCH BASIN FILTER3 4
5
PIPE COMPACTION DESIGN AND BACKFILL
ASPHALT PATCH AND INTERFACE DETAIL
*SDR 35 PIPE SHALL BE USED IN PLACE OF CMP AND LCPE AS SHOWN ON DETAIL ABOVE.###0000000.7# % %Ä24 24ÄIN COMPLIANCE WITH CITY OF RENTON STANDARDS
#Ä0000000
8#06#)'A).'0A5614/A&4#+0A':6'05+105614/A5;56'/A':6'05+10
8#06#)'A).'0A/1$+.'A*1/'A2#4-
-+0)A%1706;A*175+0)A#76*14+6;A1(A8#06#)'A).'0A5614/A&4#+0A':6'05+10P:\2017\17-030 KCHA Vantage Glen MHP\CAD\CIVIL\17-030_C.dwg, 8/7/2017 3:14:19 PM, jhein