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ORIG I MITIGATION HANGAR
4), Ber erABAM
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33301 9th Avenue South, Suite 300
Federal Way, Washington 98003-2600
(206) 431-2300 Fax:(206) 431-2250
REVISION
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BY
C180242 1 ABAM
APPROVED I DATE
SPT 10/09/18
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111A96011
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CIVIL PERMIT SET
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DESIGN BY: BERGERABAM DATE 10/22/2018
ACCEPTABILITY IHL
THIS DESIGN AND/OR CHE
SPECIFICATION IS APPROVED SPT
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APPROVED BY DEPT. I DATE BEE
LEGEND
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PROJECT LIMITS
SHORELINE
NEW CATCH BASIN
INLET PROTECTION
EXISTING CATCH BASIN INLET PROTECTION
CONSTRUCTION ENTRANCE
WHEEL WASH OR RUMBLE
STRIP
GENERAL NOTES
1. HORIZONTAL DATUM: WASHINGTON STATE COORDINATE SYSTEM, NORTH ZONE, NORTH
AMERICA DATUM 1983(91). VERTICAL DATUM: NATIONAL GEODETIC VERTICAL DATUM
1929 (NGVD29). VERTICAL DATUM CONVERSION: NGVD29 TO THE NORTH AMERICAN
VERTICAL DATUM 1988 (NAVD88) = NGVD29 + 3.60 FEET.
2. THERE SHALL BE NO EXPOSED GALVANIZED MATERIALS, COATINGS OR ZINC APPLIED
SURFACE TREATMENTS ON ANY EXTERIOR OR UNDERGROUND MATERIALS OR
SURFACES. ALL GALVANIZED OR ZINC APPLIED MATERIALS OR COATINGS SHALL BE
PERMANENTLY PAINTED OR COATED TO PREVENT EXPOSURE OF THE GALVANIZED/ZINC
MATERIALS PRIOR TO INSTALLATION OR COMPLETION OF CONSTRUCTION.
3. PROTECT AND RETAIN ALL EXISTING UTILITIES AND SITE FEATURES TO REMAIN, SEE SITE
REMOVAL PLANS.
4. PROVIDE CATCH BASIN INLET PROTECTION TO ALL CATCH BASINS THAT HAVE POTENTIAL
TO RECEIVE SEDIMENT LADEN RUN-OFF DURING CONSTRUCTION.
5. EROSION AND SEDIMENTATION CONTROL FOR IN -WATER WORK SHALL BE AS DESCRIBED
IN APPROVED PERMIT DOCUMENTS. TEMPORARY STORMWATER BYPASS WILL BE
REQUIRED FOR STORMWATER RUN-OFF CONVEYED THROUGH THE SITE BASED ON THE
CONTRACTOR'S CONSTRUCTION PHASING PLAN AND SHALL BE APPROVED BY BOEING.
6. CONTRACTOR SHALL DETERMINE APPROPRIATE SAMPLING POINTS FOR CONSTRUCTION
STORMWATER PRIOR TO DISCHARGING IT TO THE EXISTING ONSITE CONVEYANCE SYSTEM
OR VIA TEMPORARY OUTFALLS TO LAKE WASHINGTON BASED ON THE CONTRACTORS
PHASING PLAN. SAMPLING AND DISCHARGE LOCATIONS SHALL BE COORDINATED WITH
BOEING EHS REPRESENTATIVE.
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7.
CONTRACTOR SHALL PROVIDE CONSTRUCTION FENCING AT AREAS OF THE SITE WHICH
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DO NOT HAVE EITHER TEMPORARY OR PERMANENT SURFACING BASED ON THE
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CONTRACTOR'S CONSTRUCTION PHASING PLAN TO PREVENT VEHICULAR ACCESS.
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8.
CONTRACTOR SHALL DETERMINE IF INTERCEPTOR SWALES AND SUMPS ARE REQUIRED
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TO ACCOMMODATE FIELD CONDITIONS. SEE DETAIL 3 ON SHEET C501-2D.
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9.
CONTRACTOR SHALL CONTROL ANY DUST GENERATED BY EQUIPMENT, CONSTRUCTION,
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OR REMOVAL.
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10.
EROSION CONTROL MEASURES SHOWN ON THIS PLAN SHALL BE PER THE MOST
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CURRENT COPY OF THE WASHINGTON STATE DEPARTMENT OF ECOLOGY STORMWATER
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MANAGEMENT MANUAL FOR WESTERN WASHINGTON.
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11.
CONSTRUCTION OF THE MITIGATION HANGAR MAY OCCUR CONCURRENTLY WITH
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CONSTRUCTION ACTIVITIES PLANNED AS A PART OF APRON R - AREA 3,
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CONSTRUCTED UNDER SEPARATE PERMIT. SEE APRON R PLANS FOR CONTINUATION.
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12.
PERMANENT WATER QUALITY TREATMENT FACILITIES SHALL NOT BE USED TO CONVEY
OR CONTAIN CONSTRUCTION STORM WATER. NEW FACILITIES SHALL BE KEPT OFFLINE
UNTIL PROJECT IS COMPLETE. THE CONTRACTOR SHALL CLEAN AND FLUSH ALL PARTS
OF THE SYSTEM PRIOR TO INSPECTION. SEE GENERAL NOTES ON SHEET C501-1A AND
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C501-1 B.
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13.
SEE SHEET C501-2D DETAIL 1 AND 2 FOR INLET PROTECTION. SEE DETAIL 5 FOR
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SLOT DRAIN PROTECTION.
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CONSTRUCTION NOTES
PROVIDE CATCH BASIN INLET PROTECTION AT ALL EXISTING AND NEWLY INSTALLED
DRAINAGE COLLECTION STRUCTURES. SEE NOTE 13.
:� PROVIDE INLET PROTECTION AT SLOT DRAIN. SEE NOTE 13.
:� PROVIDE WHEEL WASH
R� PROTECT NEWLY INSTALLED WATER QUALITY FACILITIES
5� DRAINAGE STRUCTURES KEY PLAN
WITH SOLID LIDS SCALE : NONE
A B C D E F G H J K L
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C13
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ATE SUBTITLE
10/09/18 TEMPORARY EROSION AND SEDIMENT CONTROL PLAN
10/09/18
10/09/18 TITLE MITIGATION HANGAR
RENTON SITE
R-401423
IN COMPLIANCE WITH CITY OF RENTON STANDARDS
DEVELOPMENT ENGINEERING
Ann Fowler 12/14/2018
SURFACE WATER UTILITY
rstraka 12/14/2018 '
ZENT REVISION SYMBOL DATE
C180242 0 R G 10/09/18
C501-2A C14.
JOB NO. COMP NO.
C180242
RENTON, WA DWG N0. RTN—YD—0501-2A
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