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HomeMy WebLinkAboutDrainage Report and Addendum - PLN General - 5/1/2000 DRAINAGE REPORT ADDENDUM BYERLY BELF AIR DEVELOPMENT Lots A, B, C & D (Tax Parcel #123325000920, #123325000921, #123325000922, #123325000919) Mason County, Washington Prepared for: R. W. J.J. Inc. John Byerly, President PO Box 133i Belfair, WA 98528 Prepared by: Skillings-Connolly Inc. Consulting Engineers 5016 Lacey Boulevard S.E. Lacey, WA 98503 (360) 491-3399 May 1, 2000 , CONTENTS Introduction Page 1 Downstream Analysis 1 Spill Control Plan 1 Appendices... Exhibit `B" 2 Hydroperiod Calculations Pages 3 - 4 Revised Site Plan 5 Revised Grading, Drainage, and Erosion Control 6 Revised Utilities, Paving and Striping 7 Revised Details 8 Introduction Skillings-Connolly, Inc.has been retained by John Byerly of R.W.J.J. Inc to evaluate the drainage system for Lots A, B, and C of the short plat filed as No. 1651 under Mason County Assessor's Office, also known as the Byerly-Belfair Development. A review from Mason County Department of Public Work indicated several issues that needed to be addressed further. Among them are the downstream wetland impact from the developed site and a DOE spill control plan. This addendum seeks to address these issues. Downstream Analysis No onsite attenuation is required for the Byerly-Belfair development due to the close proximity to the Hood Canal. Exhibit B indicates a continuous wetland designation by the US Fish&Wildlife Services between Byerly-Belfair development and the Hood Canal. In addition, a natural conveyance system exists, as indicated by the aerial and contour information that channel runoff from the Byerly-Befair site to the Hood Canal. Any runoff from the site will be absorbed and channeled to the Hood Canal by these wetlands. Since the runoff is already treated with the proposed bio-swales,the hydroperiod impact of runoff is calculated using the worst-case scenario; the natural conveyance system downstream fails and no percolation occurs in the wetland and there are no outlets from the wetland area. In other words,the wetland does not discharge whatsoever. The impacts of the proposed condition versus it's existing condition is derived from taking the difference in the total volume of a 100 year 24 hour storm event and analyzing the hydroperiod. Wetlands 1-5 were used in the analysis,totaling approximately 91 acres of wetland. The results indicate a rise of 0.00241 feet or 0.0289 inches in this area due to developed conditions upstream at the Byerly-Belfair development. This rise is miniscule and therefore will not significantly alter the wetland hydroperiod or it's quality. Spill Control Plan Although no toxic chemicals are anticipated to be on the premises, a spill control plan/program is designed to meet Department of Ecology requirements. As shown on the revised Grading, Drainage, and Erosion Control plan on sheet 2, a spill control oil-water separator is designed preceding the bioswale. In the event of a spill (oil, gas,toxic), owner/tenant is to contain the spill prior to entrance into the bioswale by capping the 8"dia PVC pipe. This containment system will be adequate until HAZMAT arrives to clean the spill in a professional manner. 07 11 Y q r ° ¢. NOT TO SCALE [71 Ic F81 F4 N\77 a , 4 , I y , } �r J- �, a a „ t, -,_ r F aPALUSTRINE FORESTED SEASONALLY INUNDATED � ESTUARINE INTERTIDAL EMERGENT IRREGULAR TIDE a PALUSTRINE-OPEN WATER PERMANENTLY INUNDATED-DIKEDAMPOUNDED SkIl[INqS CONNOlIy INC. 21 PALUSTRINE SCRUB SHRUB SEASONALLY INUNDATED-DIKED/IMPOUNDED © ESTUARINE INTERTIDAL EMERGENT REGULAR TIDE D PALUSTRINE SCRUB SHRUB SEASONALLY INUNDATED CONS EXHIBIT ' B ' U�TINCI ENCIINEERS MPALUSTRINE EMERGENT TEMPORARILY INUDATED-DIKED/IMPOUNDED ESTUARINE INTERTIDAL OUATIC BED UNKNOWN 11 PALUSTRINE FORESTED TEMPORARILY INUNDATED CIVIL TRANSPORTATION ENVIRONMENTAL A p R I L 2000 ® PALUSTRINE EMERGENT SEASONALLY INUDATED-DIKED/IMPOUNDED ® ESTURAINE INTERTIDAL UNKNOWN SOURCE - U.S. FISH dt WILDLIFE SERVICES - THE NATIONAL WETLAND INVENTORY f�1�M0��Rt �� �A ' Skillings - Connolly Inc. Project Name: B���� 1.-)�uir Dkye. Iool�fn Corm[Tipiq BgimEERS Project No.: W O d P.O.Box 5080 Date: 05 o S Zoo By: V. C.0 f CM1 G LncEy,WA 98509-5080 FAX36 /491, Sheet: ©Qr�o� Cu1cv�U'�� s Page of Z FAX 360/491.3857 Zk Propose arU�na�e Flan pfu✓1d41 ;ur no �luw a {kenva+iur\ A kenvu+rcM mct,�, noo- 6t nt-u ssu�� w<I�la� d can PQ.C.etdc 52C pr� ¢r��.� rvnaFd w�+�ou IMPQC tI/1J kke w-0-}-lctr, h�dr�pQ�ro c1n6 �va► , „ C wr.� .; -- _ - 5r,m; UJCj -cwo,ks D 11J0�r' kr � E i i f • 1 FCJ�0 4 Area . =.. ._1 5 7 tQ0 yC ;Kc to 61�= 7.OJ i svtlk kv\ Tod I dolvY,,• d l01 dol ,e = 3c�� 5 6 �F_ i 3 E w0 aLiG2 -- - — - I 9,5% 2 C F_ 4 WOMOna Area, CExh►bJ__�) - 1 CLl = 1 : t 1 C] = 13 o y i - — _ i�ku� q 1 . 21 u,-z- Skillinc,s - Connolly Inc. Project Name: a��t����R��t� flQdg-l' ogMt �' CONSUITINy ENgimems Project No.: 0000 P.O.Box 5080 Date: 0, /U S is)J By: V . C O ru Z Za Lacey,WA 98509,5080 y FAX 36 /491, Sheet: 4k,.A6NO e.rw& Ca�C�4u�w(ls Page 2 of FAX 360/491.3857 -�-� 3) 53 a C j 9� 53 x +) 0,0W41 4'= X __ X = he�yh� X o,00�k1 F� or o, 0aa9 chos Cal ���Sicrl�: ��t i vro44 4a,,. +ham d2vt l s J a I00 yr :�k l\r -4o(rrx even{ Wuv�a ralS-e_ 4e h aro Q f t o� 0 t 4-�\t w W a,,� b p.0abi ~r6he4 over the f�_d�eueld��d III I I NOS: RANGE 1 - TOWNSHIP 23 - SECTION 32 SURVEYING DATA PROVIDED BY THORNTON LAND SURVEYORS INC. RECORD OF SURVEY DATED JANUARY 2000 AND STAMPED PRELIMINARY ONLY. SCALE: 1'- 40• PROPERTY INFORMATION FROM 0 10 20 40 CLIENT DATED 10/25/99 EX DRAINFIELD EX PROPERTY LINE EX SEPTIC TANK 1J6.00 _ — — — _ _ _ _ N 87'1729' is, (14 O zD � ryry 648.00 y w w w 139.99 162.01 I W Y Y Y Y W Y - r17 Y Y I 1 10.00 I I _ '- IV W W W W W .v IV W I / EX 8" I v w v v w v v v v ( Q WATER MAIN v w w v. .v .v w .v •Y I O /\ . 1 4i i e 1 W W W W W W 1 °�/ PROPOSED / PROPOSED BUILDING / BUILDING 72x40 / 72x42 1 100' ry •1 w v v W W Y Y W Y II / �/ LOT C E� P IC TANK / ey. / v v v v v v w 1 I h /I LOT D v v v v W v w v w 1 2" WATER / j3 IV / 0 N W WET W .v .v .v DRIVEWAY `'/ / POWER �`/i3 yo ��/ W W - 1 / X DITCH TO 6" EXTRUDED hry/ ti / MAINTAINED I W LAN D W W W I CONC. CURB (TYP) " ,3 LOT B a Poe 4 S" .5• EX DRAINFIELD 3 AREA _ TRANSFORMER O II O r' 00 .v w .v w w w w w 1 � •. „ =. Z v v v Wi EX 40' ACCESS AND _ 1 v v I UTILITIES EASEMENT °9�*`e W W / v v. , '1' .v w W v 1 " —• ti S� loa at I 1 W W WI o I o'W TORAGE BINS I / v w v v w v i N EX SEPTIC TANKer I Uh v W I EX DRAINFIELD I w w w w v w v I N IN / / H o V � I � LOT A I I IV / PROPOSED I v W W w I oo83E e.0o EX CULVERT 234.39_ / EX EDGE OF PAVEMENT S 8T173 532.39 3"E — _ 200.00 101 — — — _ _ — _ _ _ _ _ PROPERTY LINE � o N EX FIRE HYDRANT DATE REVISIONS CONTRACT NO. JOB�.".. , SkitliNgS CONNO«y INC. 0008 DESIGNED BY: V. CORAZZA 03100 N0. DATE 0008 �4�.r•'s1b, 0 � i ENTERED BY: T. KELLY 03 00 �" �`C� CONSU�TI EN BYERLY SITE PLAN CHECKED BY: R. CONNOLLY 03 00 Nrl NI EERS PROJ. ENGR.: R. CONNOLLY 03 DD . =13 o �� BELFAIR DEVELOPEMENT `T krm�+` CIVIL TRANSPORTATION ENVIRONMENTAL 1 TONAL LNG M&tACILfir0.131L IJW=VA9II3RIlIl AP VAL N TRUCTION Or DNG/:00008 Td+ %rel:BAS4.Z-25. 05/05 00 16:00 Vna �^® °�°r^r T&wm mw MASON COUNTY WA Y DATE: APPROVAL EXPIRES: 4 SHEETS t � { ' CONSTRUC'ION NOTES.- ,.J EASTING DI*`I TO BE MAINTAINED SCALE: t' - 40' (2� E70STING'ULVERT TO BE MAINTAINED 0 10 20 40 (J 1NSTA� TEMPORARY CONSTRUCTION ENTRANCE PERpETAIL 3 SHEET 4 �� 1 4) pSTALL TEMPORARY MAY BALES �- (� INSTALL TEMPORARY SILT FENCE -y W- - ,7 - - - - - 10 9 E PER DETAIL 5 SHEET 4 - - �J CONSTRUCT DITCH 1 FT DEEP W/1:1 SIDE SLOPE. - 07 CONSTRUCT SWALE PER DETAIL 4 SHEET 4 I� W W W W - 1 5 (8 INSTALL 6- PERFORATED FRENCH DRAIN PIPE W W W W PER DETAIL 2 SHEET 4 11 STALL 8' SOLID ADSN-12 DRAIN PIPE I W W W W W I� I / h�Q• / 8 / 10 Ir:9TALL RIPRAP 101.0 ? it ,NFTALL 4' PERFORATED FOOTING DRAIN I W W W W 1' If { I100.5 02 C,ISTRUCT SPILL CONTROL SEGMENT r ❑DETAIL 6 ON SHEET 4 PROPOSED 100.5 11 OPOSED BUILDING / 1=_�i �z I �' �' � BUILDING 72x40 �� 2OP , 1 I v W W W ,1 FF :{101.1 FF . 108.1 ,/104.5 j. ,. 1 ` ' 105.0 / i 107.5 1 !� Nil I WET j o/� , 9.5 ' i , r D -� ti c � 41 7 t + � 2/ , LAN �Gf I W 12 A .5 ^�/ �� 96.0 `�- ' -, \} 1 AREA 1 ;/ _ , , _ ,05.,+ / ,' 8 ' r r' // l V 92.5 �/� � /99.0 98.5 4.5 ` 109.0 C� 104: ITO 97.0 T--` /104.0 J Q W 107.0 109.0 .'I to ! +� I 1oe.o 1� � '/ 2 5 8 PROPOSED 102.0 ' MOBILE W W W �L W 9,0 .. _i- / OFFICE 4�e --� 20x13. 4" NOTE: 10 - - - - - - EYAS'1NG Ct»:TOURS WERE DIGITIZED 9 :FROM SPOT. :LEVATIONS PROVIDED BY r -THORNTON !.-JND SURVEYING INC. ;RECOPO OF URVEY DATED JAN. 2000 'AND STAMPF.a PRELIMINARY ONLY. DRAINMELD AND SEPTIC INFORMATION PROVIDED BY CLIENT. DATE REVISIONS CONTRACT NO. JOB MIYBER DESIGNED BY: V. CORAZZA 03 00 N0. DATE 0008 ��4`� N~off SkllliNcs CONNO«y INC. GRADING, DRAINAGE, 0008 <' ENTERED BY T. KELLY 03 00 0, BYERLY CHECKEL1 BY R. CONNOLLY 03 00 CoNSU�TING ENgiNEERs AND EROSION CONTROL SHEET PROD. ENGR.;. R. CONNOLLY 03 DD BELFAIR DEVELOPEMENT CIVIL TRANSPORTpT10N EIVYIRONMENTAL 2 M6UkC,ra4dd UMZV WA„� APPROVAL 0 NS U ION a .— � Y: DATE: APPROVAL EXPIRES: ..r.z-2 3A55. 05/05/00 to 40 1. . •i:,i� s4wn'1nn Fps>twxl lwss M A 0 N COUNTY W A a SHEETS CONSTRUCTION NOTES SCALE: 1' = 40' immi Oj CONNECT TO EXISTING 8" WATER MAIN 0 10 20 40 O2' WATER LINE r—"' O3 INSTALL WATER METER BOXES (3 EACH SIB) I O2- WATER LINE W _ _ OCONNECT TO EXISTING POWER SOURCE (ON NEARBY POWER POLE) 75 KVA PDMNT TRANSFORMER AT CLIENTS REQUEST 6 (COORDINATE WITH PUD) / 10 OPOWER CONDUIT AND WIRE 2 /• O8 2• ASPHALT CL. 'B', 2' CSTC, 6' GRAVEL BASE O 2" CSTC, 8' GRAVEL BASE PROPOSED \ PROPOSED BUILDING / BUILDING 72a40 72z42 10 6' CONCRETE SIDEWALK I 7 1 / 11 INSTALL PARKING STRIPES PER DETAIL 1 SHEET 4 I y y / 17 •-, ` 10 } 12 STRIPE STANDARD LEFT/RIGHT/THROUGH ARROWS W W W W W / f��"�/ �✓,/J / - _ // 13 .STRIPE 65' STANDARD DOUBLE YELLOW LINE I ✓ / `' _ /✓ / 14 STRIPE STANDARD SOLID STOP BAR I �y �, y <• •'• J�ffjj / / 4 15 INSTALL STOP SIGN ON TREATED TIMBER POST W WET 16 INSTALL "HANDICAP PARKING ONLY' SIGN ON 4' / 7 3; 16 , TREATED TIMBER POST W LA N D 17 INSTALL 'HANDICAP PARKING ONLY' SIGN ON BUILDING W W ,, �• ''• `.�`'` 4 / / AREA _ 6 Xx I .y w .y .v .v v. to �r��,,��� ^�,// ,"• .. '� ��t�YS, `}<.�,r. �ll'T 14 PRO POSED MOBILE OFFICE 4�? / 3 — — 20z13 t6 Z� / / LEGEND ENEASPHALT PARKING GRAVEL PARKING SIDEWALK DATE REVISIONS CONTRACT NO. JOB NllHR DESIGNED BY: V. CORAZZA 03 00 NO. DATE 0008 44��o*"+h�'lO Skit[iNCS CONNO«y INC. 0008 ENTERED BY: T. KELLY 03 00 oe tr BYERLY UTILITIES, PAVING CHECKED BY: R. CONNOLLY 03 00 CONSULTING ENGINEERS AND STRIPING SHEET PROJ. ENGR.: R. CONNOLLY 03 OD � � i�o bd BELFAIR DEVELOPEMENT 3 /ONAL eMG�4f CIVIL TRANSPORTATION ENVIRONMENTAL APPROVAL FOR CONSTRUCTION OF tM &LAM ir0.9L LAC 1.WA 1M1M/ 0NG(1:D000MI.dw Xr,(1-20368,8ASEMAP, 04/28/0008:20V­ L®d°'' vz°/m mx3606"44f MASON COUNTY WA{" �UEVJC PR5 DATE: APPROVAL EXPIRES: SHEETS l • � . w GRASS COVERED DIRT BERM CAP TO BE PROVIDED TO CONSTRUCTION ENTRANCE NOTES: \ 5. OWNER FOR EMERGENCY SPILL CONTAINMENT DRAINAGE, GRADING AND 1. MATERIAL SHALL BE 4' TO 6- QUARRY SPALLS AND MAY BE TOP-DRESSED TEMPORARY EROSION CONTROL NOTES STANDARD HANDICAP WITH 1- TO 3' ROCK. (STANDARD SPECIFICATIONS). SYMBOL 90'ELBOW 2 LEVEL SPREADER 2 THE ROCK PAD SHALL BE AT LEAST 12 INCHES THICK AND 100 FEET LONG. ___ _____ ____ WIDTH SHALL BE THE FULL WIDTH OF THE VEHICLE INGRESS AND EGRESS t. TEMPORARY EROSION/WATER POLLUTION MEASURES SHALL BE 0000 AREA. SMALLER PADS MAY BE APPROVED FOR SINGLE-FAMILY RESIDENTIAL REWIRED AS FOLLOWS. AND SMALL COMMERCIAL SITES. A. SOIL EROSION AND WATER POLLUTION/FL000 CONTROL PLANS f \ 3. ADDITIONALIONROCK SHALL BE ADDED PERIODICALLY TO MAINTAIN PROPER SHALL BE SUBMITTED TO AND APPROVED BY THE COUNTY. FUNCTION OF THE PAD. SUBMITTAL AND APPROVAL OF THESE PLANS SHALL PRECLUDE ANY CONSTRUCTION ACTIVITY ON THE SITE. 4. IF THE PAD DOES NOT ADEQUATELY REMOVE THE MUD FROM THE VEHICLE PVC LINER �' r B. ALL PERMANENT F THE T AND DETENTION AREAS I e'o PVC SEWER PIPE WAHEELS, THE WHEELS SHALL BE HOSED OFF BEFORE THE VEHICLE ENTERS USED AS PART OF THE TEMPORARY EROSION CONTROL AND ASTM. 03035 A PAVED STREET. THE WASHING SHALL BE DONE ON AN AREA COVERED WATER POLLUTION/FLOOD ACTIVITIES AND CONVEYANCE SYSTEMS /g J'S / 1' DEEP FOREBAY MATH CRUSHED ROCK AND WASH WATER SHALL DRAIN TO A SEDIMENT SHALL BE CLEANED OF ALL SILTS, SAND AND OTHER MATERIALS VAN ACCESSIBLE RETENTION FACILITY OR THROUGH SILT FENCE. FOLLOWING COMPLETION OF CONSTRUCTION. PAVEMENT M IRKING / SPILL CONTROL OIL—WATER SEPARATOR 2. COMPLY WITH ALL OTHER PERMITS AND OTHER REQUIREMENTS BY / 6 NOT TO SCALE 7y / MASON COUNTY OR OTHER GOVERNING AUTHORITY OR AGENCY. 3. PRIOR TO ANY OTHER WORK ON SITE, EROSION CONTROL FENCING AND ROCK ACCESS DRIVEWAY SHALL BE IN PLACE. AS SHOWN ON PLAN. \ 'MIRAFI' 140N FILTER /\ 4. CONTRACTOR SHALL MAINTAIN ALL EROSION CONTROL DEVICES/ FABRIC(OR EOUAL) /� TIRQUCHQUT DURATION OF PROJECT CONSTRUCTION AS DIRECTED II-H I-I IO BY THE COUNTY. DURINGO 2' GAP O / S`� Q $; 5. DISTURBED EERI AREAS TiMEPGREATER THAN 5,000 S.F. THAT ARE LEFT ALL o rF,'IS y UNWORKED REGULARLY OR FOR AN EXTENDED TIME SHALL BE ` p /' STABILIZED BY SEEDING AND MULCHING. / 6' ADS O O 6. STOCKPILED DIRT MATERIAL SHALL BE COVERED. DRAIN PIPE _ = QQ0 QQ S-1S MIN. 8Q a QO 7. THE CONTRACTOR SHALL BE RESPONSIBLE FOR DUST CONTROL ON SITE w Q DURING CONSTRUCTION AND SHALL WATER DOWN AREAS AS NECESSARY. WASHED Q DRAIN 8. ALL DISTURBED AREAS SHALL BE SEEDED PER THE STABILIZATION ROCK C6REQUIREMENTS OF THE MASON COUNTY DRAINAGE MANUAL. QQ 9. FILTER FABRIC FENCES SHALL BE MAINTAINED IN ORDER THAT �1110 O� R-25' MIN. O Q� STORM WATER DISCHARGED OFF SITE IS AS FREE OF SEDIMENT A5 POSSIBLE. INSPECT FILTER FABRIC FENCES AFTER EACH RUNOFF EVENT PARKING STALL DETAIL V MIN. AND DAILY DURING PROLONGED RAIN AND REPAIR THEM AS NECESSARY. NO SCALE 12' MIN. QQ WHEN O ��N SEDIMENNTSMENT BUILDUP OR BUILD A NEW FEN PARALLEL TO THE OLD BECOMES ECE PAR SSIVE. REMOVE S ONE. 2 RENCH DRAIN DETAIL 10. IN AREAS UNDER STRUCTURES, PAVING SECTIONS AND SIDEWALKS, NOT TO SCALE STRIP ALL TOPSOIL AND ORGANIC MATERIAL. FOR STRUCTURAL FILL IN 4' TO 8' QUARRY SPALLS AREAS UNDER FOOTINGS AND SLABS ON GRADE, ALL SOILS SHALL BE COMPACTED TO A MINIMUM DENSITY OF 90%OF ASTM D-1557 OR 95R OF UBC 70-1. THIS INCLUDES PROD--ROWNG NATIVE SOILS EXPOSED IN PROVIDE FULL WIDTH OF THE BOTTOM OF THE EXCAVATION PRIOR TO PLACEMENT OF FILL. INGRESS/EGRESS AREA MATERIALS UNDER THE PAVING SECTION SHALL ALSO BE COMPACTED TO THE MINIMUM DENSITY BY PROOF-ROLLING PRIOR TO PLACEMENT OF FILTER FABRIC MATERIAL MADE ROLLS, THE PAVING SECTION; THIS INCLUDES PROOF-ROLLING IN-PLACE SOILS, USE STAPLES OR WIRE RINGS TO ATTACH SOILS THAT HAVE BEEN DISTURBED DURING CONSTRUCTION AND ALL FABRIC TO WIRE STRUCTURAL FILL MATERIALS. 2' BY 2' BY 14 GA. INSTRUCTION ENTRANCE 11. FOR IMPORTED STRUCTURAL FILL A CLEAN, SIX-INCH MINUS. WELL MARE FABRIC OR EQUIV. '� NO SCALE GRADED GRAVEL OR GRAVELLY SAND (CLASSIFYING AS GIN OR SW AS DETERMINED BY ANSI/ASTM TEST METHOD D-2487) SHALL BE USED. NO MORE THAN 7%BY WEIGHT SHALL PASS THE /200 SCREEN AS TESTED BY TOP WIDTH 9' II I ANSI/ASTM D-1140 TEST PROCEDURE. OTHER MATERIAL MAY BE I I I SUBSTITUTED WITH PRIOR APPROVAL BY A GEOTECHNICAL iV CONSULTANT FOR USE. CRASS HEIGHT I I I NOTE: INSTALL CONSTRUCTION ENTRANCE AT LOCATION WHERE ACCESS WATER QUALITY DESIGN DEPTH 3' I I I OFF OF A PAVED ROADWAY BEGINS. 12. ALL FILL SHALL BE PLACED IN UNIFORM HORIZONTAL LIFTS OF SIX TO EIGHT INCHES LOOSE THICKNESS, CONDITIONED TO THE OPTIMUM MOISTURE CONTENT, AND COMPACTED TO THE SPECIFIED MINIMUM BURY BOTTOM DENSITY BEFORE PLACING THE NEXT LIFT, ALL UTILITY TRENCH I I �OF FILTER BACKFILL SHALL BE COMPACTED AS SPECIFIED ABOVE. io --I------------- -- MATERIAL IN 4 I II II 8':12' TRENCH 13. PLACEMENT OF FILL SECTIONS ON SLOPES GREATER THAN 4:1 \ \/ —a j 6' MAX. _ I (HORIZONTAL TO VERTICAL) SHALL BE BENCHED AS DIRECTED INTO y NATIVE SOILS, HEIGHT AND WIDTH OF THE BENCH WILL BE DETERMINED /\�//\� IN A FIELD BY A SOILS ENGINEER OR ENGINEERING GEOLOGIST. \\i/\�i\\�i�\\/ice\/ CONSTRUCTION NOTES 2' BY 4' WOOD POSTS, STANDARD 14. IN CASE EROSION OR SEDIMENTATION OCCURS TO ADJACENT OR BETTER OR EQUAL PROPERTY OWNERS,ALL CONSTRUCTION WORK WITHIN THE ALT.: STEEL FENCE POSTS 1. CONSTRUCTION STAKING SHALL BE BY THE DESIGN ENGINEER OR A DEVELOPMENT THAT WILL AGGRAVATE THE SITUATION IN THE FUTURE OUALIFIED LICENSED SURVEYOR. THE DEVELOPER OR CONTRACTOR MUST CEASE, AND THE OWNER/CONTRACTOR WILL IMMEDIATELY IS RESPONSIBLE FOR SCHEDULING THIS WORK. COMMENCE RESTORATION METHODS. RESTORATION ACTIVITY WILL 4' COMPOST TILLED WITH FILTER FABRIC CONTINUE UNTIL SUCH TIME AS THE AFFECTED PROPERTY OWNER IS 6' NATIVE SOIL MATERIAL 2. TEMPORARY EROSION AND SEDIMENTATION CONTROL SHALL BE SATISFIED. UNDERTAKEN DURING CONSTRUCTION TO AVOID DAMAGE TO 2' BY 2' BY 14 GA. CONSTRUCTED FACILITIES OR ADJACENT PROPERTIES. 15. SHOULD THE TEMPORARY EROSION AND SEDIMENTATION CONTROL BOTTOM WIDTH 5' WIRE FABRIC OR EQUIV. MEASURES AS SHOWN ON THIS DRAWING NOT PROVE ADEOUATE TO 3. PRIOR TO ANY ON SITE IMPROVEMENTS, ROADWAY CONSTRUCTION, CONTROL EROSION AND SEDIMENTATION, THE APPLICANT/CONTRACTOR iV SHALL INSTALL ADDITIONAL FACILITIES AS NECESSARY TO PROTECT OR IMPROVEMENTS TO EXISTING ROADWAY FACILITIES. A ADJACENT PROPERTIES. SENSITIVE AREAS, NATURAL WATER COURSES MAX LONGITUDINAL PRECONSTRUCnON CONFERENCE SHALL BE SCHEDULED WITH A MASON AND/OR STORM DRAINAGE SYSTEMS, SLOPE OF 3x PROVIDE �/� - t1/2 L �+ COUNTY UTILITIES INSPECTOR. THE DEVELOPER AND HIS/HER CONTRACTOR(S) WASHED GRAVEL BACKFILL MUST BE IN ATTENDANCE. 16. IN ANY AREA WHICH HAS BEEN STRIPPED OF VEGETATION AND WHERE NO FURTHER WORK IS ANTICIPATED FOR A PERIOD OF 30 DAYS OR SIDES N TRENCH AND ON BOTH 4. IF WATER OR OTHER UTILITIES ARE REQUIRED TO BE MORE. ALL DISTURBED AREAS MUST BE IMMEDIATELY STABILIZED WITH SIDES OF FILTER FENCE CONSTRUCTED IN THE COUNTY RIGHT-OF-WAY, THE APPLICANT MULCHING, GRASS PLANTING OR OTHER APPROVED EROSION CONTROL FABRIC ON THE SURFACE I SHALL SECURE THE NECESSARY PERMITS FROM MASON TREATMENT APPLICABLE TO THE TIME OF YEAR IN QUESTION. GRASS JI 8' MIN, COUNTY UTILITIES INSPECTOR PRIOR TO CONSTRUCTION. SEEDING ALONE MALL BE ACCEPTABLE ONLY DURING THE MONTHS OF TYPICAL SWALE SECTION 2' BY 4' WOOD POST APRIL THROUGH SEPTEMBER. INCLUSIVE. SEEDING MAY PROCEED, 4 NOT TO SCALE ALT.: STEEL FENCE POSTS HOWEVER, WHENEVER IT IS IN THE INTEREST OF THE APPLICANT/ CONTRACTOR, BUT MUST BE AUGMENTED WITH MULCH, NETTING, OR OTHER TREATMENT. 17. REMOVE ALL REMAINING TEMPORARY EROSION AND SEDIMENTATION (-.",FILTER FABRIC FENCE CONTROL FACILITIES ONLY WHEN THE ENTIRE SITE IS STABILIZED. NOT TO SCALE DATE REVISIONS CONTRACT NO. G.CJOII NuuTiER DESIGNED BY: V. CORAZZA 03 00 NO. DATE 0008 �4 got�+s�pr=w Ski[[iN S ENTERED BY: T. KELLY 03 00 0± �` Cj CONNORy INC. 000s CHECKED BY: R. CONNOLLY 03 00 CONSU[TING ENGINEERS BYERLY DETAILS PROJ. ENGR.: R. CONNOLLY 03 DD `= BELFAIR DEVELOPEMENT �'4 CIVIL TRANSPORTATION ENVIRONMENTAL 4 0NALS Moum oLVIL C Mom wA ftm APPROVAL FOR CONSTRUCTION OF Owcf0000ROTOIAM Xret:Z-20368.BASEMAP. 05/05/ rA><>tswn'a" MASON COUNTY �IA Y: DATE: APPROVAL EXPIRES: 4 SHEETS BYERLY — BELFAIR DEVELOPMENT Lots A. B, C & D (Tax Parcel #123325000920, #123325000921, #123325000922, #123325000919) Mason County, Washington Prepared for: R. W. J.J. Inc. John Byerly, President PO Box 133 Belfair, WA 98528 00000 Prepared by: Skillings-Connolly Inc. Consulting Engineers 5016 Lacey Boulevard S.E. Lacey, WA 98503 (360)491-3399 March 24, 2000 DRAINAGE REPORT BYERLY — BELFAIR DEVELOPMENT Lots A, B, C & D (Tax Parcel#123325000920, #123325000921, #123325000922, #123325000919) Mason County, Washington Prepared for: R. W. J.J. Inc. John Byerly, President PO Box 133 Belfair, WA 98528 Prepared by: Skillings-Connolly Inc. Consulting Engineers 5016 Lacey Boulevard S.E. Lacey, WA 98503 (360) 491-3399 OD March 24, 2000 z O��SS 0lMAl. CONTENTS Introduction Page 1 Background 1 Stormwater Treatment 1 Findings and Recommendations 2 Appendices... Exhibit"A" 3 Swale Calculations Pages 4-7 Plan Cover Sheet 8 Site Plan 9 Grading, Drainage, and Erosion Control 10 Utilities, Paving and Striping 11 Details 12 Introduction Skillings-Connolly,Inc has been retained by John Byerly of R.W.J.J. Inc.to evaluate the drainage system from Lots A,B, and C of the short plat filed as No. 1651 under Mason County Assessor's Office,also known as the Byerly-Belfair Development. This drainage report evaluates the effects of development conditions on the site and to offer measures to mitigate the post-development storm water runoff. Background The site is presently cleared except for the wetland&wetland buffer areas at the west side of the site. Previously, the site was forested. The site slopes from 8% to 10% to the west and is in close proximity to the Hood Canal. Septic systems for Lots A, B, & C are in existence as shown in the Site Plan, drawing Sheet 1. Existing conditions for drainage include SR 3 highway runoff being intercepted by a roadside ditch system conveying the storm water northerly. An existing culvert exists to channel ditch flow under the existing entrance driveway at the site. This drainage system will remain unchanged. Sheet flow begins near the existing ditch system and continues downward to the wetland located on the west side of the site. Exhibit A shows an aerial photograph overlaid with contours indicating the downstream flow from the Byerly-Belfair Development, flow arrows have been added. Runoff begins at Point A, located inside the site's wetland area, continues along an existing flow path westerly until it reaches Point B where Union River empties out into the Hood Canal. Onsite runoff is conveyed from the entrance of the property down to a wetland area (on Lot D). Since development is limited to Lots A, B & C at this time, the analysis only focuses on the impact of the proposed development condition versus the pristine condition. Total area of the basin is 68,570 sq ft(1.574 ac) which includes only Lots A, B, & C. Area of impervious surface of buildings and paved surfaces equals 36,600 sq ft (0.84 ac). There is no offsite drainage contributing area to the site. Stormwater Treatment The difference in the post-development versus the pristine condition is the addition of impervious area from buildings and paved surfaces, equaling 36,600 sq ft(0.84 ac). Of this amount, only the stormwater from parking lots and driveways is required to be treated per Department of Ecology standards. This is about 26,700 sq ft(0.61 ac). To treat the runoff from the new proposed paved surfaces, two bio-filtration swales are proposed as shown in the Grading, Drainage, and Erosion Control Plan on Sheet 2. The runoff is then conveyed to the northern and southern edges of the property and finally to the wetlands located on the western edge of the site. In sizing the swales, a 2 yr-24 hr storm event was substituted for the DOE design criteria of a 6 month 24 hr event due to availability of rainfall data. This is a conservative approach. The 2 yr- 24 hr isopluvials showed rainfall at 3.5 inches. Swales with 5' bottom and sides slopes of 4:1 as required for treatment,see Swale Calculations. The slope of the swale should be 2%with lengths of 100'. To check for conveyance capacity,the swale design was evaluated for a 25 year-24 hour storm event. The design does accommodate the 25 year-24 hour event with 55%of full capacity. Although the upstream runoff is taken care of by the existing roadside ditch system, our client, R.W.J.J. wishes to install a French drain system. The French drain system is proposed to be installed which would collect any potential shallow subsurface flows around the perimeter of the site as shown in the Grading, Drainage, and Erosion Control Plan on Sheet 2. This system will connect to an underground conveyance system which channels the runoff to Lot D where it will drain into the wetland. A roof drain collection system and foundation drains will also be routed in the same pipe connected to the French drains to Lot D. Findines and Recommendations Being that the existing runoff converges onto a wetland,which then ultimately conveys the runoff into a major body of water, the Hood Canal, our recommendation is to let runoff go directly into the wetland without any storage facilities. The two bio-filtration swales would treat onsite runoff while the French drain system and foundation drains would divert any potential subsurface water that could adversely affect the proposed building foundations or existing septic drainfields. Best management practices per DOE guidelines should be followed for erosion control during construction of driveways & development of each lot, as shown in the Grading, Drainage, and Erosion Control Plan on Sheet 2. Project Name: E u1 Zf u\ " 13e, t a f ` p Vp -Dome n t� SIULLINriS , CONNOLLy INC. C�O�C� CONSULTING ENGINEERS Project No.: P.O.Box 5080 CVc1 c,cEv,WA 9 8 5 09-5 080 Date. 3/a�, /d0 B y: V (�UZZ 360/491.3399 Sheet: SWI�LE CRLCu�� iptJS Page of I' FAX 360/491-3857 Q DO E Slur rn wwkr rlanac c me, f d5, P 201 .D ZmpuviovS Areu ��} Zs�x,, is � �} RL �u Gt,uvO Park, = a � 60 3b0 ► = 61 61 s �- EX�S�1 n� Dhvp-wa� = 5 9 t 5 `fo}G T * pQcv�o�s Area, n-ud 1-a be. 4r'eu}ea b, 64-7 SF aL P� �• ,�� �� hr even} , G? rnu x = 0, SS cis P� ' Slope o� swule = 2 '/, P3 l�Sl K tn�vCk� 3lvt Gcc► s s ur ct Ffs Lve vn,u x = 5. S OFPs Anul Av, f;u u cLepi, = 3 = O, z5 = Y iZ2 US2 n = o , 2.v wkr(- rt = munnlocb:r A U3= 345Ad cm lrupau;k uUt up-e., 'Y I ) I b Project Name: r��4 - ZeTwF Ciey¢-I fneel� SIULLINgs , CONNOIIy INC. CONSULTING ENGINEERS Project No.: Uw(i� P.O.Box 5080 Q 3 / y U J_ B , U(Ct Z ZG1 LACEy,WA 98 5 09-5080 Date: y' FAX 36 /491- Sheet: _5 A Irr C A L C V LA i t 4 fQS Page -� of FAX 360/491-3857 .Dti4 n = 0 ,20 Munn n�'� 11 Q = 0 .55LFs Fi�w z - 4 5(,Ve L) b = (0 ,SSYo iv) - CkXO,Zs) 1.4q (o,ZS�` G-7 (0.02)v. s p4 b: -T .ti p 5 Arta o t � uw = b� z�1 Paz flaw d�.loc�� A I , S SL UZYN >►. re ,,,��d L = yf ( Ga) whQr� t= a rn�' for %h 1�2Si�kChLIL ,i„ti`, L- 5 Project Name:' Q� PA�r �eyt�uv mar r 00 SI(ILLINf�S � CONNOLLy INC. � CONSUITINri ENy1NEERS Project No.: O() P.O.Box 5080 Date: 3/2-�f IU V By: V� CVfG1ZZ�i LAcq,WA 98509.5080 FAX 36 /491- Sheet: SWAB ` A LC�I_All Q IV S Page 3 of FAX 360/491-3857 - 1 0� } swaies t1� D�styn �,c T= `l , �b= 5 .,t Z yr - z�Fh� le arc a�, hr rt�v,re-4 5wa oC T =1 D9 For T= �, .I - -' Z = y b =5 CruSs S2c,�ivr. fl�q = b� } z� t .ti ' Duo' De:s�y r• L`v% ci Swale V V e 1oc-t 15 3 , S sF = �TSS�Fs V, 15-7 f/s �►� L= _ - 9 re-ju,resa < Icy ��T dus,yr `1es ! 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Box 2582 4 1 DETAILS 3 I Belfair, WA 98528 A (520) 927-7758 = D I� NTS D O� PROJECT ELFAIR SITE ADDRESS SITE I 23297 NE STATE ROUTE '3 I MASON COUNTY, WASHINGTON LEGEND I LOT A LOT B LOT C PROPOSED 260 SF 3024 SF 2880 SF W— — EXISTING WATER BUILDINGS O EXISTING MANHOLE EXISTING GRAVEL I PROPOSED 5 REGULAR + 14 REGULAR + 17 REGULAR + SUN BEACH PAP` PARKING 1 VA HC STALL 1 VA HC + 1 VA HC + a EXISTING CATCH BASIN ____________EXISTING EDGE OF PAVEMENT PROPOSED FIRE HYDRANT _________________EXISTING CURB OQ G ROSE POINT 3 I 1 HC STALL 1 HC STALL N PROPOSED WATER VALVE `1,0 — — —CENTERLINE C` I PROPOSED THRUST BLoac ENGINEER PROPOSED CURB �1 PROPOSED RIPRAP I PROPOSED LANDSCAPE K I TS A P PROPOSED ASPHALT PAVEMENT So PROPOSED STORM SEWER 108 SUNSET BEACH 302 L _ _ _ R 0 B E RT G. C 0�r N 0 LLY, P.E. PROPOSED SIDEWALK 1N PROPOSED WATER PIERCE 5016 LACEY BLVD. SE PROPOSED BUILDING I LACEY, WA 98503 (360) 491 -3399 RCONNOLLYC SKILLINGS.COM Skillings - Connolly, Inc. Consulting Engineers 0co N p A �w _ LEGAL DESCRIPTION: C0 VM IIIS•THANSPORTA40®b°EHY11 ®I�Il,�li E U5�AL ASSESSORS PARCEL NP: 1 2332-50-001 9. SHORT PLAT NO. 1651. RECORDED FEBRUARY 9, 1987. n 5016 LACEY BLVD. S.E. LACEY, WA. 985 ,ocs4° 4�a UNDER AUDITOR'S FILE NO. 463303 AND BEING A PORTION OF LOT 8 OF SAM THELER HOME AND 70NAL } GARDEN TRACTS AS RECORDED IN VOLUME 4 OF PLATS, PAGE 20. RECORDS OF MASON COUNTY, WASHINGTON. 1 360/491-3399 FAX 491-3857 J mmvn v/zv/or DWGj:D0008wver.drg Xref: 03/29/00 11:29 Vince SURVEYING RANGE 1 - TOWNSHIP 23 - SECTION 32 SURVEYING DATA PROVIDED BY THORNTON LAND SURVEYORS INC. I RECORD OF SURVEY DATED JANUARY 2000 AND STAMPED PRELIMINARY ONLY. SCALE: 1 40' PROPERTY INFORMATION FROM 0 10 20 40 CLIENT DATED 10/25/99 IEX DRAINFIELD EX PROPERTY LINE EX SEPTIC TANK ryh I w L m T_ - _ _ O 00 136.00 N BT 17 2g"W 648.00 N � � � v" �L "L "L "L Ji _ "Y W w 239.99 — _ J 1_ 1 . _ —� _ �L W •L �L NL "L IL IVI 162.01 �.rL _ I — 110.00 1 '- 1 IV .v .I- w w IV .v w v / — y� EX 8" / I v w L v w IV WATER MAIN I ° 1�L •L "L .L NL .y "L W �V / �2� / .3• / i `I' a�/ ' PROPOSED PROPOSED BUILDING I 1 /I 72x42 BUILDING 72x40 I w w L w L L w w J 100' LOT C 0`� %/ E�/ P'IC TANK LOT T I v i ,�y I D 22' �h/' '• / �,, "2 WATER / /3 I / / 1 v w v w w v I a° I m I o/ o WET / DRIVEWAY �� POWER '� /s X DITCH TO I I / r 6" EXTRUDED i/ // MAINTAINED h I W LA N p W W CONC. CURB (TYP) ti /3 LOT B aQ�e I v v w v v I 4 S' a �I / EX DRAINFIELD °°° AREA " ,, " . " TRANSFORMER y I I 11,1 lk W \V W� EX 40' ACCESS AND s UTILITIES EASEMENT 34•E / ��..`• ,� ti� 3 I m � I L w v w w v .v I WI o o TORAGE BINS �� DOLE IW N EX SEPTIC TANK ry Q I �� � y u u' � i 1� EX DRAINFIELD I v v v v v L I a I o i�o In LOT A °. 1 L L W W `1' `L L 1 PROPOSED �P I I MOBILE P� o / EX CULVERT OFFICE B 00 ... W W 2003 h� / EX EDGE OF PAVEMENT S 8T 532.39 17'33"£ _ — — 200.00 1�' / — — _ _ _ � I PROPERTY LINE 0 N 4� (V EX FIRE HYDRANT Ov DATE REVISIONS CONTRACT NO. "NUMBER ESIGNED BY: V. CORAZZA 03 00 N0. DATE 0008 Ski[[iNC�S CONNORY INC. 0008 4`ot O BYERLY SITE PLAN NTERED BY: T. KELLY 03100 CONSU[TIN EN INEERS NECKED BY: R. CONNOLLY 03100 CI C1 PROD. ENGR.: R. CONNOLLY 03 DD BELFAIR DEVELOPMENT �'1ET CIVIL TRANSPORTATION ENVIRONMENTAL APPROVAL FOR CONSTRUCTION a oRlu.e >fnsEAcnxeo.m. uM.m,rA t1�m DBC:.008SOI,l* %ref:IAS4,1-25, 03 30 00 08:55 tawa � v/za/ai 7 11.Dl�0 IAI „'�� MASON COUNTY WA B -���--�� DATE: APPROVAL EXPIRES: SHEETS CONSTRUCTION NOTES: I1D EXISTING DITCH TO BE MAINTAINED SCALE: V 40' O2 EXISTING CULVERT TO BE MAINTAINED 0 10 20 40 OINSTALL TEMPORARY CONSTRUCTION ENTRANCE PER DETAIL 3 SHEET 4 IO INSTALL TEMPORARY HAY BALES OINSTALL TEMPORARY SILT FENCE (,, �, W �,' — _ — _ — — 10 g PER DETAIL 5 SHEET 4 — — IO CONSTRUCT DITCH 1 FT DEEP W/1:1 SIDE SLOPE. O CONSTRUCT SWALE PER DETAIL 4 SHEET 4 I� W W 1 _ I OB INSTALL 6" PERFORATED FRENCH DRAIN PIPE PER DETAIL 2 SHEET 4 IO INSTALL 8" SOLID ADSN-12 DRAIN PIPE 10 INSTALL RIPRAP I I 1 `1' O11 9 INSTALL 4" PERFORATED FOOTING DRAIN W W W W W ' l 101.0 I w � � w � ' ❑ / 100. I I W W W W i O❑ PR POSED 100.5 11 2040SED BUILDING BUI ING 72x40 7 IIL, I FF 101.1 FF 10&1 II v w w w v I 10p.5 105.0 / I 1 .5 w w w w .y / 10 . (O . WET / r e .5 / / I C 109.0 AREA 9&° .v v� 92.5 86.5 4.5 w w w w w I O 99.0 / 109.0 I `0`94.0- Iw w I I s7.o 104.0 % O �Y .L IY vL I Y v v y v 109.0 I 1^ C� I Iy � / I �08.0 / �/ 2 5 1 02.0 I s ROPOSEDBILE 9 e��P I v v v v I 99.0 p <v NOTE: 10 e EXISTING CONTOURS WERE DIGITIZED 9 FROM SPOT ELEVATIONS PROVIDED BY I THORNTON LAND SURVEYING INC. RECORD OF SURVEY DATED JAN. 2000 AND STAMPED PRELIMINARY ONLY. DRAINFIELD AND SEPTIC INFORMATION PROVIDED BY CLIENT. 3 DATE REVISIONS CONTRACT NO. c JOB NUMBER ESIGNED BY: V. CORAZZA 03100 NO. DATE 0008 4�o C Skii[iNgS CONNORY INC. 0008 NTERED BY: T. KELLY 03 00 oa BYERLY GRADING, DRAINAGE, NECKED BY: R. CONNOLLY 03 00 CONSU[TINC1 ENCIINEERS AND EROSION CONTROL SHEET PROJ. ENGR.: R. CONNOLLY 03 00 BELFAIR DEVELOPMENT CIVIL TRANSPORTATION ENVIRONMENTAL 2 �ioNe�t4c APPROVAL FOR CONSTRUCTION OF M&war o►w.a, wt:ar,MA nm DWG.DOD08D00I.d XIef:Z-20,BA55, 03 30 00 09:18 taeso �� a�sa�u� lftlNl.rffl rAII �"�� MASON COUNTY WA B� mo.op�URUI-WORKS— DATE: APPROVAL EXPIRES: SHEETS ICONSTRUCTION NOTES SCALE: V = 40' IOt CONNECT TO EXISTING 8' WATER MAIN 0 10 20 40 IO 2" WATER LINE F-- O3 INSTALL WATER METER BOXES(3 EACH 5/g') I w .v .t• w w — — — _ _ _ _ _ _ _ I O 2" WATER LINE T IO CONNECT TO EXISTING POWER SOURCE (ON NEARBY POWER POLE) OI 6 75 KVA PDMNT TRANSFORMER AT CLIENTS REQUEST (COORDINATE MATH PUD) I / 10 ° / 3 IO POWER CONDUIT AND WIRE OS 2- ASPHALT CL. 'B', 2" CSTC, 6- GRAVEL BASE I O 2" CSTC, 8" GRAVEL BASE 1 `1' `Y `Y V• `1' PROPOSED PROPOSED BUILDING / BUILDING 72z40 � 72z42 10 6' CONCRETE SIDEWALK 7 ' a17 / INSTALL PARKING STRIPES PER DETAIL 1 SHEET 4 1 / 10 i2 STRIPE STANDARD LEFT/RIGHT/THROUGH ARROWS / fOpOpOpppp // / / I �L w w .l• w � °� / /3 � / I73 STRIPE 65' STANDARD DOUBLE YELLOW LINE 14 STRIPE STANDARD SOLID STOP BAR I �, �, y <• /I I Op � ••, 4 /' 8 /� (�p��paaa���. /t5 INSTALL STOP SIGN ON TREATED TIMBER POST \ W ET y v O / 01 ` p /W 7 16 / 16 INSTALL HANDICAP PARKING ONLY' SIGN IN4 4' � / Q TREATED TIMBER POST LAN D I ` _ c t7 INSTALL HANDICAP PARKING ONLY SIGN ON BUILDING I � � � / �• 4.� / / I W AREA w =�=_ / Z ` e 3Nil / 4 W Q w w v o / t !. 72 C`t \V w IV I o N t f 15 I v v v w v to �_�_' o•m ^ to . I � v' /' 3 MOBILE I OFFICE'L 20x13 16 LEGEND I [ZED ASPHALT PARKING GRAVEL PARKING ISIDEWALK 7JJv I DATE REVISIONS CONTRACT NO. �G `, I I � JOB NweEa DESIGNED BY: V. CORAZZA 03100 NO.1 DATE 0008 �4`0*• N Skit[iNCS CONNOIIy INC. UTILITIES PAVING 0008 ENTERED BY: T. KELLY 03100 0 CONSU[TIN ENEERS BYERL AND STRIPING 9EET CHECKED BY: R. CONNOLLY 03 00 fl N I CI• PROJ. ENGR.: R. CONNOLLY 03 DD "mea4o 6�� BELFAIR DEVELOPEMENT 3 �`4/ONAI.>:NG`r CIVIL TRANSPORTATION ENVIRONMENTAL APPROVAL FOR CONSTRUCTION OF �1•IRA:N ILtl0.a. �\IA Ml/l DWG:D0008SPOt.dr Xrefl-20368,BASEMAP, 03 30 00 OB:58 lerew �� °R°/01 sun"."" M�l��IMl.R1n MASON COUNTY WA 8�TO-O-p,�.-- DATE: APPROVAL EXPIRES: �ErS \ CONSTRUCTION ENTRANCE NOTES: DRAINAGE. GRADING AND I1. MATERIAL SHALL BE 4" TO 6' QUARRY SPALLS AND MAY BE TOP-DRESSED TEMPORARY EROSION CONTROL NOTES STANDARD HANDICAP WITH 1' TO 3" ROCK. (STANDARD SPECIFICATIONS). SYMBOL 2. THE ROCK PAD SHALL BE AT LEAST 12 INCHES THICK AND 100 FEET LONG. WIDTH SHALL BE THE FULL WIDTH OF THE VEHICLE INGRESS AND EGRESS 1. TEMPORARY EROSION/WATER POLLUTION MEASURES SHALL BE AREA. SMALLER PADS MAY BE APPROVED FOR SINGLE-FAMILY RESIDENTIAL I 00000o AND SMALL COMMERCIAL SITES. SOIL REQUIRED AS FOLLOWS. ^^� ' CTROL MIRAFI' 140N FILTER 3. ADDITIONAL ROCK SHALL BE ADDED PERIODICALLY TO MAINTAIN PROPER A, SHALLROSION BE SUBMITTEDANDATORUTION O AND LAP VVEED B THE COUNTY.PLANS �\ FABRIC (OR EQUAL) FUNCTION OF THE PAD. SUBMITTAL AND APPROVAL OF THESE PLANS SHALL PRECLUDE ANY CONSTRUCTION ACTIVITY ON THE SITE. I 10 — _ 4. 1F THE PAD DOES NOT ADEQUATELY REMOVE THE RE FROM THE VEHICLE B. ALL PERMANENT STORAGE AND DETENTION AREAS WHEELS, THE WHEELS SHALL BE HOSED OFF BEFORE THE VEHICLE ENTERS USED AS PART OF THE TEMPORARY EROSION CONTROL AND II II II II�II II A PAVED STREET, THE WASHING SHALL BE DONE ON AN AREA COVERED WITH CRUSHED ROCK AND WASH WATER SHALL DRAIN TO A SEDIMENT WATERECLEEDOFPOLLUTION/FLOOD ACTIVITIES AND CONVEYANCE SYSTEMS SHALL BE CLEANED OF ALL SILTS, SAND AND OTHER MATERIALS !g RETENTION FACILITY OR THROUGH SILT FENCE. FOLLOWING COMPLETION OF CONSTRUCTION. "VAN ACCESSIBLE' 15 � I PAVEMENT MARKING Z 000 0 2. COMPLY WITH ALL OTHER PERMITS AND OTHER REQUIREMENTS BY 6" ADS MASON COUNTY OR OTHER GOVERNING AUTHORITY OR AGENCY. DRAIN PIPE p i / 3. PRIOR TO ANY OTHER WORK ON SITE.EROSION CONTROL FENCING AND A ?g 5�11<MIN. 80 7 a \ w ROCK ACCESS DRIVEWAY SHALL BE IN PLACE, AS SHOWN ON PLAN. \\ WASHED 4. CONTRACTOR SHALL MAINTAIN ALL EROSION CONTROL DEVICES DRAIN THROUGHOUT DURATION OF PROJECT CONSTRUCTION AS DIRECTED ROCK D / BY THE COUNTY. 2' GAP �7 O // O�C'�OPO O ,S. 5 D DURING E TIME PERIOD THROUGH APRIL TURB D AREAS GRETER THAN 5.000 S.FF THATARE LEFT ALL �� UNWORKED REGULARLY OR FOR AN EXTENDED TIME SHALL BE STABILIZED BY SEEDING AND MULCHING. 1' MIN. O O O 6. STOCKPILED DIRT MATERIAL SHALL BE COVERED. ` OO 00 7. THE CONTRACTOR SHALL BE RESPONSIBLE FOR DUST CONTROL ON SITE O DURING CONSTRUCTION AND SHALL WATER DOWN AREAS AS NECESSARY. 8. ALL DISTURBED AREAS SHALL BE SEEDED PER THE STABILIZATION REQUIREMENTS OF THE MASON COUNTY DRAINAGE MANUAL. OO 9. FILTER FABRIC FENCES SHALL BE MAINTAINED IN ORDER THAT R-25' MIN. O O STORM WATER DISCHARGED OFF SITE IS AS FREE OF SEDIMENT AS nFRENCH DRAIN DETAIL POSSIBLE. INSPECT FILTER FABRIC FENCES AFTER EACH RUNOFF EVENT ,� AND DAILY DURING PROLONGED RAIN AND REPAIR THEM AS NECESSARY. � PARKING STALL DETAIL NOT TO SCALE p WHEN SEDIMENT BUILDUP BECOMES EXCESSIVE, REMOVE THE I NO SCALE 12" MIN. O M\d SEDIMENTS OR BUILD A NEW FENCE PARALLEL TO THE OLD ONE. \5 10. IN AREAS UNDER STRUCTURES, PAVING SECTIONS AND SIDEWALKS, STRIP ALL TOPSOIL AND ORGANIC MATERIAL. FOR STRUCTURAL FILL IN 4" TO 8" QUARRY SPALLS AREAS UNDER FOOTINGS AND SLABS ON GRADE, ALL SOILS SHALL BE COMPACTED TO A MINIMUM DENSITY OF 90%OF ASTM D-1557 OR 95X OF UBC 70-1. THIS INCLUDES PROOF-ROLLING NATIVE SOILS EXPOSED IN I PROVIDE FULL WIDTH OF THE BOTTOM OF THE EXCAVATION PRIOR TO PLACEMENT OF FILL. INGRESS/EGRESS AREA MATERIALS UNDER THE PAVING SECTION SHALL ALSO BE COMPACTED TO THE MINIMUM DENSITY BY PROOF-ROLLING PRIOR TO PLACEMENT OF FILTER FABRIC MATERIAL 60" WIDE ROLLS. THE PAVING SECTION; THIS INCLUDES PROOF-ROLLING IN-PLACE SOILS. USE STAPLES OR WIRE RINGS TO ATTACH SOILS THAT HAVE BEEN DISTURBED DURING CONSTRUCTION AND ALL FABRIC TO WIRE STRUCTURAL FILL MATERIALS. I 2" BY 2" BY 14 GA. 3 CONSTRUCTION ENTRANCE 11. FOR IMPORTED STRUCTURAL FILL A CLEAN, SIX-INCH MINUS, WELL WIRE FABRIC OR EQUIV. J NO SCALE GRADED GRAVEL OR GRAVELLY SAND (CLASSIFYING AS G OR SW AS DETERMINED BY ANSI/ASTM TEST METHOD D-2487) SHALL BE USED. NO TOP WIDTH a 9' n n. MORE THAN 7%BY WEIGHT SHALL PASS THE 1200 SCREEN AS TESTED BY I I I ANSI/ASTM D-1140 TEST PROCEDURE. OTHER MATERIAL MAY BE SUBSTITUTED WITH PRIOR APPROVAL BY A GEOTECHNICAL CONSULTANT FOR USE. I GRASS HEIGHT WATER OUALITY DESIGN DEPTH 3' I I I I NOTE: INSTALL CONSTRUCTION ENTRANCE AT LOCATION WHERE ACCESS OFF OF A PAVED ROADWAY BEGINS, 12. ALL FILL SHALL BE PLACED IN UNIFORM HORIZONTAL LIFTS OF SIX TO II !I EIGHT INCHES LOOSE THICKNESS, CONDITIONED TO THE OPTIMUM in MOISTURE CONTENT, AND COMPACTED TO THE SPECIFIED MINIMUM I I BURY BOTTOM DENSITY BEFORE PLACING THE NEXT LIFT. ALL UTILITY TRENCH OF FILTER BACKFILL SHALL BE COMPACTED AS SPECIFIED ABOVE. 6 --I-F------------ i-I-- MATERIAL IN I 41 \ I II II 8'a12" TRENCH 13. PLACEMENT OF FILL SECTIONS ON SLOPES GREATER THAN 4:1 6' MAX. (HORIZONTAL TO VERTICAL) SHALL BE BENCHED AS DIRECTED INTO •\//\\//\\\ _ _ _ _ /\\//\\//� I I I NA AVFIE D BY A HEIGHT AND WIDTH OF THE BENCH WILL BE SOILS ENGINEER OR ENGINEERING GEOLOGIST.DETERMINED Xi/\\\ \i/ \iiti w CONSTRUCTION NOTES 2" BY 4" WOOD POSTS. STANDARD 14. IN CASE EROSION OR SEDIMENTATION OCCURS WI ADJACENT OR BETTER OR EQUAL PROPERTY OWNERS, ALL CONSTRUCTION WORK WITHIN THE 1. CONSTRUCTION STAKING SHALL BE BY THE DESIGN ENGINEER OR A ALT.: STEEL FENCE POSTS DEVELOPMENT THAT WILL AGGRAVATE THE SITUATION IN THE FUTURE QUALIFIED LICENSED SURVEYOR. THE DEVELOPER OR CONTRACTOR MUST CEASE, AND THE OWNER/CONTRACTOR WALL IMMEDIATELY IS RESPONSIBLE FOR SCHEDULING THIS WORK. COMMENCE RESTORATION METHODS. RESTORATION ACTIVITY WILL 4" COMPOST TILLED WITH FILTER FABRIC CONTINUE UNTIL SUCH TIME AS THE AFFECTED PROPERTY OWNER IS MATERIAL 2. TEMPORARY EROSION AND SEDIMENTATION CONTROL SHALL BE SATISFIED. 6" NATIVE SOIL UNDERTAKEN DURING CONSTRUCTION TO AVOID DAMAGE TO 1g. SHOULD THE TEMPORARY EROSION AND SEDIMENTATION CONTROL 2' BY 2' 14 GA. CONSTRUCTED FACILITIES OR ADJACENT PROPERTIES. MEASURES AS SHOWN ON THIS DRAWING NOT PROVE ADEQUATE TO I BOTTOM WIDTH a 5' MARE FABRICIC OR EQUIV. CONTROL EROSION AND SEDIMENTATION, THE APPLICANT/CONTRACTOR 3. PRIOR TO ANY ON SITE IMPROVEMENTS, ROADWAY CONSTRUCTION,OR IMPROVEMENTS TO EXISTING ROADWAY FACILITIES, A SHALL INSTALL ADDITIONAL FACILITIES AS NECESSARY TO PROTECT a NOTE: MAX LONGITUDINAL PRECONSTRUCT10N CONFERENCE SHALL BE SCHEDULED WITH A MASON ADJACENT PROPERTIES, SENSITIVE AREAS, NATURAL WATER COURSES ;� COUNTY UTILITIES INSPECTOR. THE DEVELOPER AND HIS/HER CONTRACTOR(S) AND/OR STORM DRAINAGE SYSTEMS. SLOPE OF 3x PROVIDE 3/� - 11/Z MUST BE IN ATTENDANCE. 16. IN ANY AREA WHICH HAS BEEN STRIPPED OF VEGETATION AND WHERE WASHED GRAVEL BACKFILL N NO FURTHER WORK IS ANTICIPATED FOR A PERIOD OF 30 DAYS OR I IN TRENCH AND ON BOTH SIDES OF FILTER FENCE 4. IF WATER OR OTHER UTILITIES ARE REQUIRED TO BE MORE, ALL DISTURBED AREAS MUST BE IMMEDIATELY STABILIZED WITH SIDES CONSTRUCTED IN THE COUNTY RIGHT-OF-WAY, THE APPLICANT MULCHING, GRASS PLANTING OR OTHER APPROVED EROSION CONTROL FABRIC ON THE SURFACE SHALL SECURE THE NECESSARY PERMITS FROM MASON TREATMENT APPLICABLE TO THE TIME OF YEAR IN QUESTION. GRASS 8" MIN. COUNTY UTILITIES INSPECTOR PRIOR TO CONSTRUCTION. SEEDING ALONE WILL BE ACCEPTABLE ONLY DURING THE MONTHS OF 4 TYPICAL SWALE SECTION 2" BY 4" WOOD POST APRIL THROUGH SEPTEMBER. INCLUSIVE. SEEDING MAY PROCEED, ALT.: STEEL FENCE POSTS HOWEVER, WHENEVER IT IS IN THE INTEREST OF THE APPLICANT/ NOT TO SCALE CONTRACTOR, BUT MUST BE AUGMENTED WITH MULCH, NETTING, OR I OTHER TREATMENT. �� 17. REMOVE ALL REMAINING TEMPORARY EROSION AND SEDIMENTATION nFILTER FABRIC FENCE CONTROL FACILITIES ONLY WHEN THE ENTIRE SITE IS STABILIZED. NOT TO SCALE Q�[a> J� DATE REVISIONS CONTRACT NO. JOB NUMBER )ESIGNED BY: V. CORAZZA 03 00 N0. DATE 0008 �v4'�or � N Skl«INC�S CONN011y INC. 0008 :NECK BY: T. CONN 03100 x < CONSU[TINCI ENGINEERS BYERLY DETAILS ;NECKED BY: R. CONNOLLY 03 00 FIR ENGR.: R. CONNOLLY 03100 BELFAIR DEVELOPMENT �"ET r,Tsw �.¢' CIVIL TRANSPORTATION ENVIRONMENTAL 4 s�oNA1.eM° MGL4cAvKmLsL LWff WA"W APPROVAL FOR CONSTRUCTION al' DIG:D000BDT01.d Wrcf:Z-?&YW,BASEYAP, 03 30 00 09:19 mesa �� o/A/m ppB�A'�!M 1M7<INIM".111627 MASON COUNTY WA Y DATE: APPROVAL EXPIRES: s crs PCON_STgTFo� MASON COUNTY 4 M C y DEPARTMENT OF PUBLIC WORKS o S N cn r O T = BUILDING 8 415 NORTH SIXTH STREET P.O. BOX 1850 2'> N y y SHELTON, WASHINGTON 98584 OJ �O Phone(360)427-9670 x450 1864 Fax(360)427-7783 MASON COUNTY July 14, 2008 MISSION The mission of Mason Mr. Russell LaForce County Government is to Vector Engineering, Inc. provide essential& 309 Washington Street NE mandated services which will preserve & benefit the Olympia, WA 98501 health,safety,&welfare of the general public in a Re: John Byerly Grading Permit GRD2007-00024 Grading and Stormwater Plans professional and courteous manner through the effective and equitable management Russell of available public resources. Enclosed are the drainage report, drainage report addendum and IDC letter sent by Alan Mason County recognizes Tahjah you requested. This should give you a background as to the stormwater history of that its employees& the site. volunteers are the foundation upon which these services are provided. If I can be of assistance please call be at(360)427-9670 x 724. Si rely, ohn Sliva Programs Engineer Mason County Public Works 415 N. Sixth St. Shelton, WA 98584 360-427-9670 x 724