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Geo-Tech & SSP Review for FPA2001-00013 and SEP2001-00061 - FPA Reports - 8/13/2001
MASON COUNTY PUBLIC WORKS DIRECTOR/COUNTY ROAD ENGINEER Shelton,Washington 99584 DATE: Aug. 13"', 2001 INTER-DEPARTMENTAL COMMUNICATIONS TO: Michael MacSems, DCD -Planner FROM: Alan A. Tahja, P/W- Co. Hydr. Engr. DCD/Planning WO# 01-0157 SUBJ: Geo-Tech& SSP Review NAME: Debra Binion(a)Agate Rd& Spencer Lk Rd FPA2001-00013 & SEP2001-00061 A geotechnical assessment and Stormwater Site Plan(SSP)prepared for the proposed Binion FPA/Class IV Conversion,has been received and reviewed by Public Works. The geotechnical assessment conforms to standards of engineering principles and practices for this time and place, and appears to conform to the minimum requirements of DCD for geotechnical assessment reporting. The stormwater features proposed in the SSP appear adequate for the proposed harvest operation. If the applicant chooses to keep the proposed features only temporarily, they will be required to remain in place until a more permanent SSP is prepared for the site. I have discussed the plan with the project's engineer regarding the intended function of the proposed features and the design approach used(Thurston County's standards). The design does not include impervious development beyond road construction, and the ponds were intended to address temporary concerns. With minor modifications,the proposed stormwater plan could be considered adequate for permanent development of the property residentially. To consider the proposed features permanent,the following features should be considered by the applicant; (a)the ponds should be made permanent(as opposed to temporary)with an overflow spillway incorporated into their design. (b)new rooftop runoff created by the residential development of the lots should be infiltrated on the individual lots. The applicant has delivered a recorded copy of an Operation and Maintenance (O&M) Covenant for the stormwater control facilities, so O&M requirements have been addressed. Please feel free to contact me at County extension 461 if you have any questions regarding these comments, or if you feel any features need further discussion or attention. Zy, Alhn A. Tahja File: H:\WP\GEO\ASESMNTS\Binion.doc WORK ORDER - PUBLIC WORKS DEPT. N Date: Work Order PERMIT Number. Requested by: Authorized by: ';%,I 1A I "I"' Date: Type of Work: 0 CHARGE TO: I% L44FA NAME P)CI A % AGENCY/COMPANY L; A-P4,?nv1- BILLING ADDRESS PHONE M) Pub. Works Person In Charge: n i p'. ....... ....... (C) Project Time Line: (from-to dates) TO Project Start date: S 3 Q Esdmt&FkJsh Date: Apprmftate hours: ESTIMATED TOTAL$*S: COST ESTIMATE (D) 12111 Employee S Rate Hours Subtotal Ednje I TOTAL$ 3 :?6 ,4k, 9 um sm TOTAL SS EQUIPMENT USED: MATERIAL USED: (F) Actual Cost $ BARS: PROD#. DATE Employee WORKED Nam 3 Rate Hours SubtoW FrInae% TOTAL$ EQUIPMENT USED: to Unit Rate TOTAL$'S MATERIAL USED: TOTAL ALL (G) BILLED DATE INV At PAID DATE REC.0 CKN R'�'O�F 1 V AUG 0 8 zoos DEBRA BINION SEP2001-00061 Geological Assessment Proponent: Debra Binion 5221 801h Ave. SW Olympia, WA 98512 H - (360) 943-0722 W -- (360) 754-5550 Prepared By: Robert E. Tauscher, P.E. Jerome W. Morrissette & Associates Inc., P.S. 1700 Cooper Point Road SW,#B2 Olympia, WA 98502 Phn. (360) 352-9456 Pax. (360) 352-9990 Submitted: August. 2001 DEBRA BINION SEP2001-00061 Geological Assessment Proponent: Debra Binion 5221 801h Ave. SW Olympia, WA 98512 H - (360) 943-0722 W— (360) 754-5550 Prepared By: Robert E. Tauscher, P.E. Jerome W. Morrissette & Associates Inc., P.S. 1700 Cooper Point Road SW, #132 Olympia, WA 98502 Phn. (360) 352-9456 Fax. (360) 352-9990 Submitted: August, 2001 PROJECT ENGINEER'S CERTIFICATE "I HEREBY CERTIFY THAT THIS PROJECT, DEBRA BINION, MASON COUNTY, WASHINGTON HAS BEEN PREPARED BY ME OR UNDER MY SUPERVISION AND MEETS MINIMUM STANDARDS OF THURSTON COUNTY AND NORMAL STANDARDS OF ENGINEERING PRACTICE. I UNDERSTAND THAT THE JURISDICTION DOES NOT AND WILL NOT ASSUME LIABILITY FOR THE SUFFICIENCY, SUITABILITY, OR PERFORMANCE OF DRAINAGE FACILITIES DESIGNED BY ME." i Robert E. Tauscher, P.E. Jerome W. Morrissette & Associates Inc., P.S. gT E. T,g V AA s 0 - x 37939 4 II GIST AL �r-1 EXPIRES: 02/07/02 I DEBRA BINION GEOLOGICAL ASSESSMENT SEP2001-00061 August 2, 2001 INTRODUCTION The purpose of this report is to provide eotechnical site evaluation support for clear P IP P P g PP cutting the 23.01 acre site that consists of four platted lots. The site is located at the NE corner of the intersection of Agate Road and Spencer Lake Road (see Appendix A). The existing site consists of a previously thinned 40—60 year old second growth Douglas Fir trees. There are surface slopes along Agate Road. The land surface slopes to the east from the ridge above Agate Road on the west side of the parcel. There are no permanent or seasonal watercourses within or in the vicinity of the project site. SURFICIAL SOILS SCS mapping indicates surficial soils at the project site and in the surrounding area to be Alderwood gravelly loam (see Appendix B). This soil series generally occupies glacial terraces and consists of a thin mantle of gravelly loam over consolidated glacial till. In undisturbed areas surface water infiltrates readily to the till surface and flow horizontally to slope breaks, and natural incisions and watercourses. At the project site the upslope surface water from ridge along Agate Road flows to the existing access road ditch, then southerly along the access road and into the County Ditch. The surface water on the east side of the access road sheet flows easterly onto the adjacent property. Shallow groundwater within the project site flows easterly from the ridge above Agate Road towards the adjacent property. GEOLOGIC SETTING AND RELATIVE SLOPE STABILITY The project site is located on a glacial till plain deposited by the Vashon Glacier. Surficial deposits are weathered, while deeper deposits are quite competent. As noted above (Alderwood Soils), there is very little resident recessional outwash in the vicinity of the project site. Appendix C shows an excerpt from Washington State Map 1-853-F (1977), which presents the relative slope stability of this area. The project site is shown as Class 1 which consists of rolling uplands underlain by stable material. Class 1 areas are listed as stable. As such, the project site is stable, but could be subject to the adverse impacts of inappropriately performed down-slope development. REGIONAL OVERVIEW In summary, the project site is located in a stable regional environment with respect to topography, surficial soils and surficial geology. FACILITY SIZING AND DOWNSTREAM ANALYSIS The impacts of the proposed improvements on stormwater runoff have been analyzed in accordance with the procedures described in the "Drainage and Erosion Control Manual For Thurston County", 1994 Edition. Details of the analyses performed are presented in Appendix D. ANALYSIS CRITERIA AND CHARACTERISTICS Hydrologic and hydraulic analyses have been performed using HYDRA. Copies of the HYDRA input and output files in Appendix E. System modeling has been performed using the Thurston Region 10 Year/24 Hour Design Event. The storage volume required by HYDRA is 72,592 CF, the volume provide by the sediment ponds is 85,216 CF. The site tributary area is summarized below: POST DEVELOPMENT SITE CHARACTERISTICS Total Site Area 23.01 Acres Total Tributary Area 8.54 Acres Pass-Through Drainage Area 0.00 Acres Proposed Gravel Driveway Impervious Area 0.37 Acres Proposed Sediment Pond Area 1.05 Acres SCS Data Hydrologic Soil Group "C" Curve Numbers Predevelopment Condition 81 Impervious Areas 98 Pervious Areas (Conservative) 89 FACILITIES OPERATION AND MAINTENANCE It will be the responsibility of the site owner of the subject property (Debra Binion) to operate and maintain the stormwater system located within the limits of the project site. A copy of the operation and maintenance covenant required by Mason County is found in Appendix F. EROSION CONTROL Considering the existing site topography and surface characteristics, temporary erosion control will include two sediment ponds at the roadway entrance and silt fence along the northerly, easterly and westerly limits to prevent silt transport onto the adjacent properties and county right of way, and a construction entrance. A copy of the Stormwater Site Plan is found on Appendix G. CONCLUSIONS AND RECOMMENDATIONS Based on the foregoing, it is concluded that: • Regional topographic, surficial soil conditions in the vicinity of the project site are stable. • Proposed clear cutting performed as recommended herein should have no adverse impacts on adjacent properties or County right of way. It is therefore recommended that: • All disturbed areas be stabilized with temporary erosion control and planted with permanent ground cover consisting of rapid growth native species. A project site plan and details have been included in Appendix C, showing the basic elements required for proper site drainage. It is noted that all investigations performed indicate stable and suitable site conditions for clear cutting on this site. LIMITS OF LIABILITY Jerome W. Morrissette & Associates Inc., P.S. is responsible for the opinions, conclusions and recommendations presented in this report, which have been developed from the site data acquired at the specific locations described herein. It is noted that this data has been extended to cover the immediate vicinity of the related construction effort, using our best engineering judgment. However, comprehensive continuous data is not available and localized variations may exist. Such variations are not reflected in this report and their nature and extent may not become evident until construction has been initiated. This report has been prepared within the standard and accepted practice of our industry. Should the data or conclusions presented herein be used by others to formulate conclusions and recommendations for this or other projects in the immediate vicinity of this work, Jerome W. Morrissette & Associates accepts no responsibility unless we are given the opportunity to review them and concur with them in writing. It is suggested that Jerome W. Morrissette & Associates be given the opportunity to review the final plans and specifications for the soil related work to be performed on this project prior to finalization. This is to verify that our soil and foundation related conclusions and recommendations have been correctly understood and applied in the final design of facilities. Jerome W. Morrissette & Associates Inc., P.S. Robert E. Tauscher, P.E. Project Engineer CABob'sFi1es\01143Binion\Geological Assessment.doc APPENDIX A Location Map .__......_.__.....__._.......................................................... a $ ^ ....»...................... ..... a \ y ..................I e a a e — . a O 5 e LA lot 4 - 3 /�1 3 i AGATE : .. .»__.. .... .......__......».._...»....._.. . RD a e r i •V ii8 i q a _ s _' C y .. - sa ma..... ........................ _ Y ......... a... s 3 i a i 3 W P 3 7 e i a -i h..................................................................................................... ........................ APPENDIX B Soils Information 16 SOIL SURVEY SERIES 1951, NO. 0 AI.DF.RWOOD SERIES dry sulnluera. PititLli•es 1)i'UIlLU:U gUUd fOL':Lge ill Sl,t•lll" The Alderwood series consists of brown, well-drained, artd late in fall if proper plants are used and mailat;e- upland soils. They have developed front Mixed gravelly nient is good. The sleeper soils are suited best to fruits, glaClal till dominated by acid igneotts Pock. The rill- nuts, and grapes. The uncleared and remote areas tire Bedded gravel is mainly granite and quartzite. Rainfall better suited to forestry than to cultivated crops. is 45 to 60 inches it year. The native vegetation is a Nearly all the uncleared acreage is in second-growth deitse forest consisting almost entirely of Douglas-fir and forest 70 to 80 years of age. Shallowness to the compact a dense uunderstory of salal, Oregon-grape, vine maple, till often inhibits growth of the older trees. The soil, and huckleberry. Northeast of the Hood Canal the however, is well suited to production of Christmas trees. ulidcrstury is mainly rhodudtndroi,. Alderwood soils Douglas-fit• readily restooks in thick stands eontainillg oc•eulty the extensive rolling glaeial moraines, and thev trees of (wood form. Stands of small trees tare often are the dult,iilailt ,UiIS ill. Lhe eastel.11 1ru•t of blue cuulltV. thiltiied gill pruincil to iiiaiittaitl guud 1UiitL of ;III-OWLll. The Alderwood soils are associated with the somewhat The growing of Christmas trees has expanded rapidly in excessively drained Everett and Indianola soils and with the past few }}ears and is now one of the important the moderately well drained Iiitsap sot S. Shelton and industries in the county. It is one of the proper uses Hooclsport soils differ front the Alderwood soils in that of the cutover lands that are not in a high site class. then have developed under high rainfall and from gla- Alderwood soils need barnyard manure, green manure, ciaf till having a much higher content of basic igneous nitrogen, or legumes to maintain a fertility for crop rock. The Shelton and Hooclsport soils are more reddish production. Phosphate fertilizers and green manure or throughout the profile. The Shelton soils are usually barnyard manure greatly improve fertility. \itrogei, deeper to the cemented till than the Alderwood soils. fertilizer is often applied with barnyard manure or wlien Alder%N oud gravelly sandy loani, 5 to 15 percent cucd•r cro :, arc plw%-ed under. The Seri ilirer {uriLislLt, slopes (Ab).—This is the most extensive soil of the Alder- additional nitrogen needed to hasten decay of the organic WO"d Sent-. It c•cupies uudnbttiu� to roll.itL, mocalnes. matter. In cundi.,tllil,cL1 urea- :i l _t� `_' iu�h lurtt of Cory Marl: Tlii., svil i- ill capability �ubrlu.�s Cl, and itL rile brown,acid Organic inatter is oil the Surface. This grades classes 4 and 5 for Douglas-fir. Small areas along the to a thin, clam: arrayish-brown, highly organic i„iileral border, where the soil is more than 32 inches deep to soil. The surface soil consists of a friable, bro-%\•il, compact till, are in site classes 3 and 4 for Douglas-fir. medium acid. gravelly sandy loam 8 to 13 inches deep. Alderwood gravelly sandy loam, 15 to 30 percent It has a weak granular structure and contains numerous slopes(Ac).—This soil varies more in depth, but otherwise Founded shot. Below the surface soil, to depths rang- it is similar to Alderwood gravelly sandy loam, 5 to iIlg from 18 to 24 inches, is a pale-brown gravelly sandy 15 percent slopes. It occurs in close association with loam that is very friable, is single grained., and and ad)jacent to that soil. It is on moderately steep ridges, contains small to moderate amounts of shot (20). along clrainageways, and on elongated irregular slopes. Between this layer and the cemented till is a 3- to 10-inch Small areas with slopes of more than 30 percent tare la�'er Of very pale brown gravelly sanely loans. It con- mapped with this soil. Surface drainage is more rapid tarns no shot and is firmer but has the same texture as than on the more gentle slopes. Runoff and erosion on the laver above. however, it is faintly to distinctly . the logged and semicleared areas are controlled by the spotted and horizontally- streaked with brown and vel- dense growth of plants. Erosion would dainage the soil low. The cemented till consists of light-grll •, gravelly if it were cleared for crops. sanely loan,. and it normally occurs at depths raligilig Use and suitability..rho moderately steep and irregu from 24 to 32 inches. It is impermeable to roots and lar relief make this soil unsuitable for cultivation. It very slowly permeable to water. The first few inches should be used only for forestry. In most respects tree is itsually •lainrrlated and streaked with reddish brown rowth is similar to that on Alderwood gravelly sandy and yellow. Below this, to a depth of many feet, the foam, 5 to 15 percent slopes, but growth differs according till is uniformly cemented., fairly uniform light gray, to the direction of slope and local drainage along the and medium to stroll iy acid. _L thin mat of roots channels of small streams. Areas along streanns usually vlt cif liar t.\tr IILt fill. hMV it prolific grvi\tlt of'uldcr tliat tttida to rrtat•il i1Lc: The ceinented substratum tends to restrict the rapid restocking; of Douglas-fir. This soil is in capability sub- downward movement of moisture. class VIs and in site classes 4 and 5 for Douglas-fir. I'se and :•rlcitaWity.—"of more than about 5 percent Alderwood gravelly sandy loam, 30 to 45 percent of tltir soil liar bertl cicaIVkt and 1S a-t•Ll 1'ur snits ui• slopes ►Adj.—'Phis ,uil is siillilur co and adjacent to utlLer pasture. Most of the cultivated acreage is near the Alderwood soils. It occupies gullies and deeply cut ililcL6 of 1'u=;'el SULllld III t lie VlCildl,ics ul _lMLdi,l :uLd baliks of streai 1 . 1 e,v of the profile charactertsucs are .111yr1. In this area the Alderwood soils are associated uniform. The depth to till, content of gravel, and na- „•itlt the better agricultural soils of the Cloqualhuln, Sin- ture of the material vary considerably from place to clair, and Isitsap series. place. Hay, small grains, pasture, fruits, nuts, grapes, and Use and suitability.—This soil is used only for forestry, berries tare the principal crops grown on the Alderwood and it should be left in that use. It is in capability sub- soils. The lack of subsoil moisture damages crops in class Vie and in site class 5 for Douglas-fir. summer. For this reason, early ruatu rill,.;, short-season Alderwood gravelly loam, 5 to 15 percent slopes crofts are suited best to this soil. Yields" of all crops (Ao).—This soil differs froin Alderwood gravelly sandy are usually fain•11• IOW because of IOw fertility ;old the loalll, 5 to 15 pereelic slopes, mainly in having a surface niiess ortlerwise stated, tile: color i.• ttlat of deb• soil. soil and subsoil that are gravelly loam. In addition, the 6, SOIL SURVEY SERIES 1951, NO. 9 GeneraY Characteristics of the Soil Series ence that occurs below the surface is compactness of the subsoil or underlying material. Some of the soils are The soils of Mason Comity differ in color, texture, excessively dry and droughty; others are waterlogged and degree of stoniness. Another easily noticed differ- and swampy. Differences in parent material or in length TABLE 2.—Topographic position,parent Topographic position and origin Soil series Parent material Substratum Relief Upland: Residual, nonglacial___-__- Astoria------- Shale and sandstone--------- Compact and weathered__ Hilly to rolling-________- Hoquiam----- Mixed old terrace___________ Compact clay and silt__-_ Hilly to rolling---------- Tebo---------- Basic igneous rock and mixed Bedrock______-__ Hilly to ntountaulous---- glacial material. Glacial moraine----------- Alderwood____ Gravelly glacial till---------- Cemented______________ Rolling to steep--------- Delphi------- Glacial till over basalt------- Cenicuted--------------- Rolling to hill}__. .__- Harstine. ___- Sandy glacial till------------- Cemented______________ Rolling to steep_-_______ lfuu(lSl)Urt GraVtalc glat•inl till- ----._---- Cemented --- --- 1,11dulaling 511e1t.ou------ Gravellyglacial till----------' Centeuted------------- - Rolling tostee -_p .-_-- Sinclair___---I Gravelly glacial till---------- Cemented-------------- Undulating to hilly___-__I (Aucial uutWash l)lains anti E' erctt . .-_--, Gravelly glacial drift---------- Luust grit%rl_-_.______..__, Gentic.undulating to eskers. hilly. Carstairs_____ Gravelly glacial drift--------- Loose gravel- Nearly level------------ Grove-------- Gravelly glacial drift--------- Loose gravel------------ Gently undulating to hilly. Indianola_____ Sandy glacial drift___________ Loose sand_-__-_____.-__ Hummocky and rolling_-_ Lystair______- Saudy glacial drift----------- Loose sand------------- Undulating to hilly-_____ Glacial lake______ _______ Clognallum. Glacial lake sediment___.-____ Firm silt -------- Gently rolling to rolling__ Kitsap_______ Glacial lake sediment-------- Firm silt------ --------- Undulating to rolling Nordby______ Glacial lake sediment-------- Stratified sand, gravel, Undulating to rolling___.. and silt. Saxon-------- Glacial lake sediment-------- Stratified sand and silt-__ Rolling----------------- Terrace------------------ Belle_________ Mixed sedimentary material-_ Silty and friable_________ Gently sloping___-___-__ Le Bar.______ Compact,mixed terrace niate- Firm, gravelly sandy Gently sloping____--____ rial, loam. Nasel_.------- Gravelly glacial drift--------- Compact gravel--------- Gently doping__________ Sol Due-_____ Mixed glacial gravel_________ Loose gravel and sand_-_ Gently sloping_-_____-__ Wadell_______ Basaltic alluvium____________ Loose and gravelly______ -Gently sloping__- ------ Depression: Mineral soils, upland___- Bellingham-__ Glacial lake sediment____-_-- Silt and clay; firm_______ Nearly level_____-______ Deckerville-__ Gravelly glacial drift_________ Gravel and sand;compact- Nearly level------------ Edmonds-__:- Sandy glacial drift_--_______. Sandy ioam or brown Nearly level___.._-_---_- Szil fl•ialde. Noch. _ Gravvll_v drift.--__. - Gravel and rcuid; luu<tIe�cl- McRenna.__. Gravelly glacial drift____-___- Gravel and sand:compact_ \early Iv--i _. -_-__- Nornia------- Sandy glacial drift------.----- Sandy and conipact------ Nearly level-- ---------- Stimson______ Mixed old terrace----------- Silt and clay; firm_______ Nearly level-- ---------- Organic soils------------- McMurray--- Woody peat----------------- Organic---------------- Level- .--- ------------ Alukilteo_---- Sedge peat------------------ Organic----------------- Level------------------ Oreas-------_ -Moss---------------------- Organic---------------- Level..----------------- Semiahmoo--- Sedge peat------------------- Organic---------------- Level-------.----------- Tacoma------ Sedge and tidal inaterial______ Organic________________ Level_______-___-______ Tanwax------ Sedimentary peat------------ Organic---------------- Level_ .----__-------__. Bottom land_____________! Belfast-------- Glacial alluvium------------- Coarse sand and gravel___ Gently undulating_______ lluugeness---- 'Mixed atlluyiuni------------- Silt and sand----------- Gently undulating------- I See footnotes at end of table. MASON COUNTY, WASHINGTON 7 of time the soils have been developing are scarcely ing to topographic position and the kind of parent lnate- noticeable to myone, but the trained o server. rial and, for each, the relief and drainage antler which Table 2 lists the soil series of Mason County accord- they have developed. material, and major characteristics of soil series Surface soil Subsoil Approxi- Internal mate drainage I depth to Color 9 Consistence 3 Color 2 I Texture Consistence 3 substratum lrtrhr: Nledituu..__ Dark brown l riahlr__ Brown :+nrl vellolvi'h silty r.lav Firiu_--..-__-' Mown. Medium___. Reddish brown---------- Friable------ Yellowisw- h red--------- Silt loam---------------I Firn::_____-. 43-60 1ledinm___ Reddish brown Fri:+hlr______ Yellowish red to st.rong Clay loam__________---- I Firm-------- 36-72 brown. Medium___I Brown_________________ Friable______ Pale brown----------- Gravelly sandy loam_____ Very friable__ 24-32 Medium___ Brown_________________ Friable------ Yellowish brown______ Gravelly loam___________ Friable______ 48-60 I Aledium___ Brown_________________ Friable______ Pale brown___________ Gravelly sandy loam to Very friable__ 24-32 gravelly loamy sand. Medium___ Reddish yellow•---------- Friable______ Brownish yellow_______ Gravelly sandy loam_____ Very friable__ 22-28 Medium___ Brown to strong brown__ Friable______ Reddish yellow-------- Gravelly sandy loam_____ Very friable__ 30-36 Medium___ Grayish brown__________ Friable------ Very pale brown______ Gravelly loam___________ Friable------ 28-42 Very rapid-1 Pale brown_____________ Vervfriable__ Light veltowishbrow•n__ Gravelly sandy loam to Very friable__ 18-24 gravelly loamy sand. Very rapid_ Very dark gray_______ Very friable__ Brown to reddish Gravelly sandy loam_____ Very friable__ 20-50 I \-Pry rahid_� Reddish brown-------- friable__ Light brown----_- \•e:� gt:rvclly lo&uny 4n nd Very fri:rblr- `1.-:;" Very rapid_ Brown----------------- Very friable-- Yale brown___________ Loamy sand------------ Very friable__ 26-30 Verve rapid_i Brown----------------- Very friable-- Reddish yellow-------- Loamy sand________-_-- Very friable__ 25-30 Medium-__ Pale brown to brown_____ Friable-_____ Light brown to brown__ Silt loam to silty clay Firm-------.- 24-28 loam. 640 Medium -J Light brownish-gray__::_ Friable_____: Light gray-, ---- Silty clay loam__________ -Firm ...32-36 Aledium___ Brown or dark reddish Friable______ Reddish yellow________ Loam__________________ Friable and 3 - brown. ' Medium- Brown_________________ Friable______ Pale brown___________ Silt loam_______________ Friable and 30-36 firm. �[edium___ Dark grayish brown_____ Friable-_..___ Light yellowish Silt loam or silty clay Friable------ 30-40 loam. \fedinm.__ Dark brown------------- Friable------ Yellowish brown------ Silt loam---------------- Friable------ 38-48 Medium_-- Dark reddish brown--- Friable. -- Brown---..------------ Gravelly loam------_----• Friable-----_; 21-15 Rapid_____ Brown or grayish brown__ Friable------ Light yellowish brown__ Gravelly loam or gravelly Vervfriable__i 30-:35 sandy loam. Aleditnn___ Reddish brown---------- Friable------ Reddish brown-------- Gravelly ravelayn aolrnmto¢ravelly Friable______ 24-28 i Very slow-_: Very dark gray---------- Friable------ Light gray____________ Clay___________________ Firm________ 24-30 I Rapid_____ Very dark gray__________ Friable___-__ Dark grayish brown__- Gravelly clay loam______ Firm________ 24-34 Rapid------ Grayish brown__________ Friable______ Light gray___-_-_____- Sandy loam or fine sandy Friable______ 18-30 loam. Rapid_____! Dark gray or dark gray- Friable______ Grayish brown-------- Gravelly sandy loam_____ Firm________ 24-28 ish brown. Afedium___ Dark gray______________ Friable______ Light brownish gray___ Gravelly loamy sand_____ Firm________ 24-30 Medium___ Dark gray______________ Friable______ Light brownish gray___ Loamy sand____________ Friable______ 24-32 Very slow__. Gray or dark grayish Friable______ Light brownish gray___ Silt.v clay_______________ Firm________ 28-36 brown. Fibrous 30+ Medium_-_ Dark brown------------ Friable------ Brown--------------- Peat------------------- _____ 1lfedium___ Dark brown------------ Friable------ Brown- .------------- peat------------------- Fibrous----- 30+ Medium___ Yellowish brown________ Fibrous_____ Yellowish brown------ Peat___________________ Fibrous_____ 30+ Medium___' Dark brown to dark Friable______ Brown--------------- Peat------------------- Fibrous_____ 30+ grayish brown. Medium___ Brown--------- _ Fibrous_____ Brown_______________ peat------------------- Fibrous_____ 16-24 Slow------ Very dark grayish brown- Friable------ Dark grayish brown or Peat___________________ Firm________ 3 dark brown. Rapid_____ Brown_________________ Friable______ Pale brown___________ Sandy loam------------- Friable------ 42-50 Nledium___ Brown_________________ Very friable__ Pale brown to grayish Fine sandy loam and silt Friable______ 30-46 brown. loam. 510220--60—-2 SOIL SURVEY SERIES 1951, NO. 9 TABLE 2.—Topographic position,pares Topographic position and origin Soil series Parent material Substratum Relief Depre-vAion—Coat inited 1. BUttomt htlid—l'uutiltucd ; Lid----------- BU.6:tit, s:utdatotw, and shale gaud and l;ravvl--------- Gently uuelulatitig____ -- alluvium. Juno_____ Glacial ailuviuttt_____________ Gravel------------------ Gently undulating_______ � ytowtt_-`--! Basalt, sandstone, and :hale Medium sand; Hue Guutly undulating------- alluvium. texture. N - I Glacial alluvium------------- Sand, silt, and gravel__-.. Gently undulating---.-_-- Pilchuck_____ Mixed alluvium------------- Saud and gravel_________ Gently undulating------- Puget-------- Mixed alluvium_____________ Silt and clay____________ Gently undulating_______ Skokomish___- 1lfixed alluvium------------- Silt, clay, and sand______ Gently undulating_--__-_ Wa ato______ Basalt,sandstone, and shale Silt, clay, and fine sand__ Gently undulating I, 1 Refers to downward movement of water in absence of a high water table. 9 Color when soil is dry. Descriptions of the Soils The appl•U\illlale ite Vezl�e and propurtiollate e\tv11t Uf Elie soils Mapped in Ellis Cuullt)' are listed in table 3, and the important characteristics of all soils mapped are In this section the soil series sail mapping units are summarized in table 4. The location and distribution described in detail and their relation to agriculture is of the soils are shown on the soil map in the back of set forth to the extent that knowledge permits. the report. TABLE 3.—Approximate acreage of soils in Mason Counly, 11"ash. Soil I Acres I Percent II Soil Acres Percent Alderwood gravelly sooty loath,5 to 15 percent Ldutottds fine sandy loam,0 to 2 perceutslopes_I 110 (1) slopes___________________________________I 80,510 ( 13.0 Il Edmonds silt loam, 0 to 2 percent slopes------ 96 I (1) _11.lrr%cuud gra\oll; -:':nl� luaut, 15 to 30 per- lift Dili 1�,am, U to 3 perccmt slupeI.,.-.-_-_____ 58 l�) cent slopes_______________________________ 8,669 1.4 Everett gravelly sandy loam, 5 to 15 percent Alderwood gravelly sandy loam, 30 to 45 per- slopes___________________________________ 8,414 1. 4 cent slopes_______________________________ 4,571 . 7 Everett gravelly sandy loam, 0 to 5 percent Alderwood gravelly loam, 5 to 15 percent slopes___________________________________ 3,440 . 6- slopes________________________________ 221 (1) Everett gravelly sandy loam, 15 to 30 percent Astoria silt loam, 15 to 30 percent slopes------ 9'4_0 1. 5 slopes___________________________________ 6,883 1. 1 Astoria silt loath, 5 to 15 percent slopes_______ 1,303 2 Everett gravelly loamy sand, 0 to 5 percent Belfast sandy loam, 0 to 3 percent slopes______ 366 1 slopes___________________________________ 526 1 Belfast silt loam, 0 to 3 percent slopes________ 134 (') Everett gravelly loamy sand, 5 to 15 percent Belle silt loam, 0 to 5 percent slopes__________ 277 (') slopes________ ________ _______ ________ 2,332 4 Bellingham silt loans, 0 to 3 percent slopes_____ 1,831 3 Everett gravelly loamy sand, 15 to 30 percent Bellingham silty clay loam, 0 to 3 percent slopes___________________________________ 1,353 2 slopes----------------------------------- 455 . 1 Gravel pit--------------------------------- 58 (1) Carstairs gravelly loam, U to 5 percent slopes-_ 5,503 1. 0 I Grove gravelly sandy loam, 0 to 5 percent Cloqualluut silt loam, 5 to 15 percent slopes-__ 9,368 1. 5 I slopes._____..___ ___ 41,770 6. 8 Cluquallumt Silt luaus, 0 to 5 percent :lopes_..__ 604 1 Grove gravelly sandy luaus, o-to 15 percent Cloquallum silt luaus, 15.to .30.1.wrevitt slopes__ ., 735. 1 j slupvs___________________________________ 10,494 1.7 Cloquallum silty 4lay.luuut; 5 to 4,5 rpurewit Grove gravelly sturdy loatu, 15 to 3U percent slopes----------------------- --------- 532 1 i slopes------ ---------------------------- 3,529 . 6 Cloquallum silt luaus, moderately shallow over Grove gravelly sandy loam, 30 to 45 percent cemented till, 5 to 15 percent slopes________ 2,868 .5 slopes___________________________________ 1,056 2 Coastal beach, 0 to 2 percent slopes___________ 130 (1) Grove cobbly sandy loath, 0 to 5 percent Deckerville gravelly-loans,0 to 2 percent slopes_ 586 1 slopes___________________________________ 2, 133 3 Deckerville silt loath, 0 to 2 percent slopes----- 422 1 Grove cobbly sandy loam, 5 to 15 percent Deckerville silty clay loam,U to 2 percent slopes_ 318 1 slopes __________ 622 1 Deckerville gravelly silty clay south, U to 2 per- p ----""-----_"-----"---__" Grove cubbly sandy loam, 15 to 30 percent cent slopes------------------------------- 40 ( ) 1 Delphi gravelly loath, 5 to 15 percent slopes___ 1, 138 2 slopes___________________________________ O1 ( ) Delphi gravelly loam, 15 to 30 erceut slopes__ 1,328 2 Grove stony sandy loam, 0 to 5 percent slopes_ 367 1 Dungeness fine sandy luaus,0 to percent slopes- 1,858 3 Grove gravelly loam, 0 to 5 percent slopes_____ 383 1 Dungeness silt loam, 0 to 2 percent slopes_____ 1,094 2 Grove gravelly loam, 5 to 15 percent slopes____ 144 (1) Dungeness fine sandy loans,shallow, U to 2 per- I Grove gravelly loath, basin phase, U to 5 per- centslopes------------------------------- 243 (1) centslopes------------------------------- 594 1 See footnotes at end of table. TAIMF. 4.—Important rlutracteristics of soil, of _Ila,ota L'oway, Waxh. \:aural f)ccun•ence Moisture- lbiot Depth to layer Nutnral Si-vial management Soil drainage of hi h supplying penetration that limits fertility problems Water table capacity` limited by— rout penetration= Alderwood gravelly sandy lo:uit, 5 to Good _________ None _ Fair_______ Cemented till- Moderately Low-- Low fertility. ____ shallow. 1; percent slopes. Slopes and low fertility. Low___.___ Cemented till_ Moderately Low__ __ ; Aiderwood gravelly sandy loam, 15 to Good -__------ No►i,.e_ shallow. 30 percent slopes. Low_______ Cemmlutd till_ Moderately Low.. Slopes and low fertility. Ald,•rwood gravelly sandy loans, 30 to Good -________ Noue_ •t5 percent slopes. shallow.Ald,•rwoo(I gravelly loam, 5 to 15 per- C;uod - ...___-_ None Nair to Cemented till_ Moderately Low Low fertility. cent slopes. good. shallow. Goal Ast„ria silt loam, 15 to 30 percent slopes_ -_____ - Nolte. Good . ._ . Bedrock Deep___ Low Low fertility. - ___ None- Astoria silt loam, 5 to 15 percent slopes_ Good _________ None_ Cool___ .__ Bedrock____ Deep__________ Low Low fertility. w fertility and Belfast sandy loam,0 to 3 percent slopes_ Moderately 1)ccasioually Fair------- None . .___-- ModeratelyMecdivar- l rdroughtiness. go,ld. in wmlr•r deep. Belfast silt loam, 0 to 3 percent,slopes__ Mgood.tely 1)cca3ionall Good______ None Moderately Me(lium___ Low fertility. good, in winter'. deep. -- Medium___ Low fertility. Belli- silt loam, 0 to 5 percent slopes---- Good _______-- None_ Good______ None_ ____-_ Weep_______- Belhogham silt loau:, 0 to :1 per Poor.--__--__-- ties--- -- Good______ Clay......... Moderately Me(litun___ I)ruinuge. slopes. deep. Bellingham silty clay loam, 0 to 3 per- Poor..--------- des--- _- -.-- Good------ Clay-- ------ Moderately Mediuut_-- Uruuu(gc. > deep. cent slopes. Car-fairs gravelly loam, 0 to .5 percent Some-what None_ . ... ..__ Low______- None------- Mode atel to Low I droughtiness id Z slopes. ex:cssrvc' shamoderately c deep. Cloy plallunt silt loam, 5 to l:i percent Moderately None- Good___.__ None_--- Moderately Medliwn___ Low fertility. y slopes. go,�d. .� Clalualluui silt loam, 0 to 5 percent Mo(L:rately No)le- __ Godxl______ Nonc__------ Moderately Medium--- Low fertility. slopes. go"Id. shallow. Slopes told erosion. Clollnallilrn silt loam, 15 to 30 percent Moderately None_ - Goud_____.- None _______ -Moderately Medinn►__ [ slopes. go"d. shallow. U, sl Clslpnllumsiltyclayloam, ,5l015per- \dod•rately \one o erate_ _- ._-- Goal_____ . None-------- Moderately Medina►___ Low fertility. e••nt slopes. g""`d Medium___ Low fertility. Clatuallum silt loam, moderately slutl- Moderately \.one_ Good_____. Compact till__ Moderately low over cemented till, 5 l0 15 per- good. deep to creep. H cont slopes. __ _ _ - --- ~ Coastal peach, 0 to 2 percent slopes____ Not ra„ricutturul boachlim•, consisting of sand trod grave.______ ______________ Deekerville gravelly loam, 0 to 2 per- Poor .. ________ Yes__ _ Fair_______ Coarse gravel_ Moderately Medium___ Drainage. cent slopes. deep. Derl:nrville silt learn, 0 to 'S percent Porn Yes__ Good___ ._- Coarse gravel_ Moderately VIe(linm___ Urainal;e. deep. slol,cs. I)Pl kerville silty clay loam, 0 to 2 per- Poor .--------- yes-- -_ Good ___- Coarse gravel_ bldeerate►y Mcdio ul._ I)r:unage. c-•ut slopes. deep. Deekerville gravelly silty clav loam, 0 Poor ---------- Yes-- - Good_____- Coarse gravel_ Moderately Medium.. Drainage. to 2 percent slopes. deep. Delphi gravelly loam, 5 to 15 percent Goo 1__________ \one_ _. ___ Fair______. Compaet till-- Moderately Low_ .___- Low fertility. deep. slopes. Dcl phi gravelly loam, I r> to :10 percent Goo•1 __ .____ ._ done Fair_____- _ Cony,act till__ :Moderately Low_ .___ Steep slopes a❑ low deep. fertility. sl„pea. High.__.._. I"loading. Du ogeness fine sandy loam, tl to 2 per- Moderately Winter awl High------- Nonee_-____-- evitt slopes. good. spring. High-.-.- Hooding. Dunucness silt loam, U to 'S percent Moderately Wintcr :u,:l EIigh___-. .. _ Yone. .------ ---------------- g �I„pes. g(. Id. springy,. Dun•cocas fine sandy loam. shallow, Mo i,rately Winter• aunt Good______ Sand and Moderately Medium__ Flooding and droughti- tl Lo 2 percent slopes. g� )(I. sprim�, gravel. deep. i Edinonds fine sandy loam, 0 to 2 per- Pool•.__-___-__ Yes__ High------- Water table___ Moderately Medium--- Drainage. c lit slopes. deep. E(hnonds silt loam, 'oor______---- Yes__ High------- ----- ------- - Moderately Medium-_ Drainage. 0 to 2 percent slopes_ I (deep Eld silt loam, 0 to 3 percent -lopes___-_ Moderately Occastout:lly Good______ Sand and Moderately Medium_. . Luw fertility. t� goad. in n inter. gravel. deep. f,. ......,,,,...,r n"A of 4nhln - _ 90 TABLE 5.—Use and maaagemoent of the soil series accordhig to topographic position and origin jData are for slolxrs up to 15 percent. Steeper slope~should Ire in forests or in other natural condition] Topographic posiflon Soil series Present uses Suitable uses Factors limiting agri- Dla•nagement Deeded fertilizer for and origin cultural use crops' Upland: Nonglaeial_.__-- Astoria------. Forestry; pasture and Forestry____-----_ - ]ra?'• Clearing costs, inac- Reforest where Nitrogen :611d pbo.:- Iloquiani..-___ Forestry; pasture and Forestry and past ill-(- ._ ccssibility, and high needed; mainiain phate. hay• rainfall. organic matter. Telco-__-----_ Forestry; Pasture and Forestry--------------- hay. Glacial moroine-_._ Alderwood____ Forestry;hay,pasture, Forestry;berrie-s, grains, berries, and grapes, hay, and grapes. pasture. Dclplii------- Forestry-------------- Forestry----------. — - Harstine_____ Forestry;hay,pasture, Forestry;berries, Inaccessibility,clearing Maintain organic Manure and phos- grains, berries, and grapes, hay, and costs, low fertility, matter; use green- phate for b,rries; o grapes. pasture. and lack of summer manure crops. anunouium sulfate t, ifoodsport-_-- Forestry--------- . --- horsiry_------ -- moisture. orot:her nitrogen Shelton____-- Forestry; hay and pas- Forestry; Berri<s, fertilizer. tore. grape: hay ,y, and pasture. C Siv.clair______ Forestry; hay, pasture, Forestry;berries, grains, berries, and grapes, had, and grapes. pasture. � M Outwosh plains mid ad Carstairs_____ Grazing_________ ____ Grazing_______---...._ Droughtiness and low Prevent overgrazing- Growth of pl.•j nts con- �U eskers, gravelly fertility. trolled b\ water W drift. supply• Ur Everett_____- Forestry; feed crops Forestry_____________.. Droughtiness and low and vegetables for fertility. Reforest where Growth of pl;anis `o° home use. needed and girdle controlled i q water Grove_______- Forestry; feed erolrs Forestry_____-_---. . -_ Drought and low lod.-epole pine. supph y and vegetables for fertility. X home use. Outwash Mains, Indianola_____ Forestry;feed crops Forestry;feed crops tD sandy rift. and vegetables for and vegetables for Maintain organic Nitrogen and. plros- home use, home use. Droughtiness and low matter; use green- pliate or nconrre Lvst.air------- Forestry; feed crops Forestry; feed crop= fertility. manure crops. and phospi:ae• and vegetables for and vegetables fur home use. home use. Glacial lake sedi- Cloquallum-__ Small farms; berries, Feed crops and vego- Cost of clearing_______ meat. fruits, vor,erable�-, tables for home u-, and hay. pasture, berries, :ji,rl fruits. Ritsap__--___ Small farms; berries, Feed crops and veg Cost of clearing_______ fruits, vegetables, tables for hone a-e; Maintain organic Nitrogen and hhus- and nay. pasture, berries, and matter; use green- pliat•e or manure fruits. manure crops and and phoslIl,:rtc. ordby------ Forestry---- ----.----_ Feed crops and ve_ _ Inaccessibility, small legumes in rota- tables for home 1:-1•; I areas, frost. tion. pasture, berries, :and fruits. Saxon_______ Hay, grain, pasture.. Feed crops and vc_• Cost of clearing and vegetables. tables for home o-e; pasture, berries, :aald fruits. TABLE 5.-Use and managernewt- of the soil series according to topographic position and origin-Continued VIII 0 Topographic, position Soil series Present uses Suitable uses Factors limiting agri- Management Needed fertilizer for and of igin cultural use t crops, Bottom land Ci,n. Allmimn, poorly Nuby________ Woodland; pasture and Iiay, pasture, and Small remote crews drained. hay, grains. and drainage. Artificial drainage; \1:nnn, with super- Puget-------- Woodland;hay, pas- May, pasture, and Drainage-------------I use ads ted pas- phosl,lutte. ture, and grains. grains. tune :in hay mix- Wapato------ Forest.ry; p:,-ture, busy, Hay, pasture, :u:d Drainage-------------', tures. and g1-:611:. grains. j t For specific quanl.it.ics,see the county agent,or contact the State Agricultural 7 Percentages, respectively, of nitrogen, phosphoric acid, and po,ash. Experiment St nG•n. TABLE 6.-Estimated average acre yields of crops under common management from soils of Mason Comity, 147a-sh.,a.nd their suitabilit'ilforforestry [Absence of yields., indieutes crop is seldom, if ever, grown, or the soil is not suited to its production] Mixed I i � Suitability for forestry Oats grass j Can- I -_ Soil ' Corn Oats Wheat Barley and and Alfalfa; Pas- Pota- ning Hasp- Black- � m Silage legume clover hay j ture= toes peas berries ' berries j Site class hay hay I I 1 Dominant species I or relative rating 3 k Tons Bu. Bu. Rot. Tons Tons I Toes Tt)ns Bu. TO Tons I Tons I M Alderwood gray,dly sandy ------ 28 16 20 2. 2 1.8 2. 8 2. 8 110 ______ 1. 5 I 1. S t Douglas-fir and hem- 4 and 5. loam,5 to 15 1wreent slopes. t j lock. t7 Alderwood grav,lly sandy ------ ------ ------ -- --- -------- -------- ------I------ ------ ------ -----------------: Douglas-fir and hem- 4 and 5. ra loam, 15 to :30 percent lock. � slopes. ; v, Alderwood graN.-Ily sandy ------ ------ ------ ------ .------- --------,-----I------ ------ ------ --------; ---- -i Douglas-fir and hem- 5. loam, 30 to .15 percent lock. Slope. I I z Alderwood g,;,v,•i ly loam, 5 ______ 32 20 25 2..0 2. 0 3. 0 j 3. 0 125 ______ 1. 3 i 1. 5 j Douglas-fir and hem- 4 and 5. to 15 percent dopes. t lock, Astoria silt loan,, 15 to 30 ------ ------ ------ ------ -------- 2. 5 ---.---+ 2. 8 ------ ------ --------;------ _� Douglas-fir and Lein- 1 and 2. percent slopes. lock. Astoria silt loam, 5 to 15 ------ 40 20 30 2. 6 2. 6 3.0 125 ------ 1. 3 1.. -5 Douglas-fir and Lem- In 2. percent slol,es. ; I lock. Belfast sandy loans, 0 to 3 9. 0 75 33 37 4. 0 4.0 ___.__ 4. 3 180 2. 6 4. 5 4. 5 Fir, cedar, hemlock, Fair. percent slope. I and deciduous trees. Belfast silt lo:un, 0 to 3 10. 0 75 35 40 4. 0 4. 2 ------ 4. 5 190 2. 8 4. 5 1 4. 5 Fir, cedar, hemlock, Fair. percent slot,,-,. and deciduous trees. Belle silt loam, 0 to 5 pe,cent 8. 5 65 30 35 3. 8 3. 8 ____-_ 4. 0 170 2. 6 4. 5 j 4. 5 I Fir, cedar, hemlock, 1 Fair. slopes. and deciduous tree-. Bellinglin m silt Liam, 0 to 3 8. 5 70 30 35 2. 8 3. 0 ___-__ 4. 0 ______ 1. 5 _ --- 3. 3 I Western redcedar, red Fair. I percent slope. t alder, and Oregon- maple. Bellingham silty clay loam, 7. 0 GO ------ 30 2. G 3. 0 ------ 4. 0 ------ 1. 5 ------- 3.3 i Western redcedar, real Fair. 0 to 3 percent-lop,•=. j alder, and Oregon- maple. Carstairs graven} lo:un, 0 to -_____ 20 12 12 I.0 1. 2 ______ 1. 5 80 _ __ 1. , __-___-. Douglas-fir and hem- 3 and 4. 5 percent slop,•s, lock.' Clonuallum silt loam, 5 to 7. 5 63 28 33 2. 8 3. 1 3. _' 3. 5 150 1.6 2. 0 2. 6 Douglas-fir and hem- 2 and 3. 15 percent slolws. ( lock. Cloquallum silt, loam, 0 to 5 8.0 65 30 33 3.0 3. 2 3. _' 3. 6 160 1. 8 2. 0 2. 6 , Douglas-fir and hen,- 2 and 3. percent slojws. lock. Clonuallum silt loan,, 15 to ______ ______ ______ ______ 2. 5 2. 5 2. 5 2. G ______ ______ _ I Douglas-fir and lieu- 2 and 3. 30 percent slolws. lock. SOIL LEGEND SYMBOL NAME SYMBOL NAM E SYMBOL NAME Aa Alderwood gravelly loam, 5.15 percent slopes Ha Harstine gravelly sandy loam, 5.15 percent slopes Nc Nordby loam, 5-15 percent slopes Ab Alderwood gravelly sarly loam, 5.15 percent slopes Hb H3rstme gravelly sandy loan.., 15-30 percent slopes Nd Norma sandy loam. 0.3 percent slopes Ac Alderwood gravelly sandy loam, 15-30 percent slopes He Hoodsport gravelly sandy loam, 0-5 percent slopes Ne Norma silt loam. G-3 percent slopes Ad Alderwood gravelly sandy loam, 30-45 percent slopes Hd Hoodsport gravelly sandy loam, 5-15 percent slopes Nf Nuby silt loam, 0-3 percent slopes Ae Astoria silt loam, 5-15 percent slopes He Hoodsport gravelly sandy loam, 15.30 percent slopes Oa Orcas peat, 0.2 percent slopes Af Astoria silt loam, I5.30 percent slopes Hf Hoodsport gravelly sandy Io�m, 30-45 percent slopes Ob Orcas peat, shallow over gravel, 0-2 percent slopes Hg Hoodsport stony sandy loan,, 5-15 percent slopes Ba Belfast sandy loam, 0-3 percent voiles Hb Hoodsport stony sandy loam. 15-30 percent slopes Pa Pilchuck gravelly loamy sand, 0.3 percent slopes Bb Belfast silt m lop percent slopesm, 0-3 percent slopes 0-3 percent slopes Hk Hoquiam gravelly silt loam. 5.15 percent slopes Pb Pilchuck loamy sand, 0-3 percent slopes Bd Bellingham soli loam,Bc Belle silt loam, Hm Hoq m uia gravelly silt loam, I5-30 percent slopes Pc Pilchuck sand, shallow,0-3 percent slopes Be Bellingham salty clay loam, 0-3 percent slopes Hn Hoquiam loam, 15-30 percent slopes Pd Puget silt loam, 0.2 percent slopes Ho Hoquiam silt loam,0-5 per^ent slopes Rat Riverwash,0-3 percent slopes Ca Carstairs gravelly loam. 0-5 percent slopes Hp Hoquiam silt loam, 5-15 percent slopes RIP Rough broken land Cb Cloquallum silt loam, 0.5 percent slopes Hr Hcquiam silt loam, 15-30 percent slopes Rc Rough mountainous land, Hoodsport soil material Cc Cloquallum silt loam, 5-15 percent slopes Hs Hcquiam and Astoria silt 1:3ms, 5-15 percent slopes Rd Rough mountainous land, Tebo soil material Cd Cloquallum silt loam, 115-30 percent slopes Ht Hcquiam and Astoria silt learns, 15-30 percent slopes Re Rough mountainous land, Tebo-Shelton complex Ce Cloquallum silt loam, moderately shallow over is Indianola loamy sand, 0-5 cercent slopes cemented till, 5.15 percent slopes Sa Saxon silt loam, 5-15 percent slopes Cf Cloquallum silty clay ;oam, 5-15 percent slopes lb Indianola loamy sand, 5.15 percent slopes SIP Semiahmoo muck. 0-2 percent slopes Ic Indianola loamy sand, 15-20 percent slopes Sc Semiahmoo muck, shallow, 2-10 percent slopes Cg Coastal beach, 0-2 percent slopes Id Indianola sandy loam, 0.5 percent slopes Sd Shelton gravelly loam, 5-15 percent slopes Da Deckerville gravelly loam,0-2 percent slopes le Indianola sandy loam, 5-15 percent slopes Se Shelton gravelly sandy loam, 0-5 percent slopes Db Deckerville graveliy silty clay loam, 0-2 percent slopes Ja Juno y sandy loam, -3 percent slopes gravelly sandy loam, 5-15 percent slopes Dc Deckerville s::t loam, ')-2 percent slopes gravel) Sf Shelton r Del Deckerville s!ty clay!-;3m. 0.2 percent slopes Jb Juno loam, 0-3 perent slopes Sig Shelton gravelly sandy loam, 15.30 percent slopes De Delphi gravelly loam, 5-15 percent slopes Jc Juno loamy sand, 0.3 percent slopes Sh Shelton gravelly sandy loam, 30-45 percent slopes Df Delphi graveliy loam, 15-30 percent slopes Jd Juno sandy loam, C-3 percent slopes Sk Sheftcn-Astoria complex, 5-15 percent slopes Sm Shelton-Astoria complex, 15-30 percent slopes Dg Dungeness fine sandy loam, 0-2 percent slopes Ka K;tsao silt loam, 0-5 percent slopes Sri Sinclair shotty clay loam. 0-5 percent slopes Dh Dungeness fine sandy loam,shallow, 0-2 percent slopes Kb Kksap silt loam, 5-15 percent slopes So Sinclair shotty loam, 5.15 percent slopes Dk Dungeness slt loam, ')-2 percent slopes Kc Kitsap silt loam, 15-30 pe--ent slopes Sp Sinclair shotty loam, 15-30 percent slopes Ea Edmonds fine sandy ;oam Kd Kitsap_silty clay loam, 0.5 percent slopes , 0-2 percent slopes Sr Skokpmish silt loam, 0-3 percent slopes Eb Edmonds silt loam, 0 2 percent slopes Ke Krsap silty clay loam, 5.15 percent slopes Ss Sol D:c gravelly loam, 0-5 percent slopes Ec Eld silt loam. 0.3 percent slopes Kf Kcch gravelly loam,0-3 pe-ent slopes St Sol Duc gravelly loam, 5-15 percent slopes Ed Everett gravelly Icam Kg K; y sand, 0.5 percent slopes ch gravelly sandy loam, 0-3 percent slopes Su Sol Duo gravelly sandy loam, 0-5 percent slopes Ee Everett grave'!y loamy sand, 5-15 percent slopes Kh K;ch slit loam, 0.3 oercen: slopes Sv Stimson silt loam, 0-2 percent slopes Ef Everett gravelly loamy sand, 15-30 percent slopes La Le Bar silt loam, 0.5 percent slopes Ta Tacoma peat, 0-2 percent slopes Eg Everett gravely sandy 'oam, 0-5 Percent slopes Lb Lystair loamy sand,0.5 Pe cent slopes Tb Tanwa,, peat,0-2 Percent slopes Eh Everett gravelly sandy 'oam, 5-15 percent slopes Lc Lystair 'o.amy sand. 5-15 cercent slopes Tc Tanwas peat, shallow over gravel, 0.2 percent slopes Ek Everett gravely sandy :oam, 15.30 percent slopes Ld Lystair sandy loam,0-5 pe gent slopes Tel Tebo ;ravelly loam, 5-15 percent slopes Ga Gravel pit Le Lystair sandy loam, 5-15 percent slopes Te Tebo gravelly loam, 15.30 percent slopes Gb Grove cobbly sandy!oam,0-5 percent slopes Lf Lystair sandy loam, 15-30 cercent slopes Tf Tebo gravelly loam, 30-45 percent slopes Gc Grove cobbly sandy Ic3m, 5-15 percent slopes Ma Made land Tg Tebo loam, 5-15 percent slopes Gd Grove cobbly sandy loam, 15-30 percent slopes Mb Maytown silt loam, 0-3 perent slopes Th Tebo loam, 15-30 percent slopes Ge Grove grave':v loam. 0-5 percent slopes Mc M.Kenna gravelly Inam, 0-3 percent slopes Tk Tebo-Astoria complex, 5-15 percent slopes Gf Grove gravelly loam, 5-15 percent slopes Md McKenna loam, 0-- percer- slopes Ton Tebo-Astoria complex, 15-30 percent slopes Gg Grove grave'Jy loam, oasin phase, 0.5 percent slopes Me McMurray peat, 0 ? percen slopes Tn Tidal marsh, 0-2 percent slopes Gh Grove grave':y sandy :oam, 0-5 percent slopes Mf M^Murray peat, shallow o+ r gravel, 0.2 percent slopes Wa Wadeii gravelly loam, 0-5 percent slopes Gk Grove grave ly sandy loam, 5-15 percent slopes Mg Muki too peat, 0-2 percen! slopes Wb Wadeil gravelly loam, 5-10 percent slopes Gm Grove graveliy sandy loam, 15-30 percent slopes Mt; Mukflteo peat, shallow over gravel, 0-2 percent slopes We Waded loam, 0.5 percent slopes Gn Grove gravelly sandy 'oam, 30-45 percent slopes Go Grove graveliy sandy !oam, basin phase, 0-5 percent slopes Na Nasal gravelly foam., 0.5 G ,cent slopes WellWaDatO silt loam, 03 percent slopes Go Grove stone+ sandy loam,0.5 percent slopes Nb Nordby loam, 0-5 percent -lopes We WaDato silty clay loam, 0-3 percent slopes Ii I r� F 1 I "•l. •rrruurr .rr..,. r rrr• rr.rr.ru.+.• wu •urr+y .. .r•. ..•r,• ur• rr.r. .,un•r•.r,run err -J: r- urpllRF+r"'re,-.clovealt Compiled fron,r atrial phol..'aPh' Ilown in MSI and 1963. n•' Range, township, and section corners shown on this map are indefinite. 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Slopes generally less than 15 percent, but may be greater locally in areas too small to be shown at the map scale. Large- ` ly comprises rolling uplands underlain br very stable material such as young glacial till, mantled in places by a thin layer of sandy gravel or other permeable material;also includes flood plains, deltas, alluvial fans, ( ! ' and some beach deposits. Class 1 areas immediately adjacent to steep 1� slopes of class 3 areas may be threatened by potential landsliding. Nor- ., ;�`,; ' ► .�\ ; (`� mal, proper engineering practices generally are adequate to insure stabil- ity in these areas. 27 � /� •sue t� ' r` `=_ / / � /� �%�/� j�! ,� �>r—.i .,. Class 2 � �! `vrf !r'' Areas believed to be stable under normal conditions, but may become un- �{ rat stable if disturbed by man's activities, if slope is oversteepened by ero- ' t ✓' (`l i, :� y /:• � ✓ sion, or if subjected to strong seismic shaking. Slopes generally steeper B4 x k, T 'l %f ��• i "" than 15 percent, but may be less in some areas of weak geologic mater- .,� v �„�r, -�, � ials. Includes areas underlain by: well-drained sand and gravel, mostly 7, 'u hi -� + on valley sides that lack known slope failures;glacial till with steep i;; •_-,' � � , 1. , � ,, slopes;and bedrock. �r 1 0 �i5 u +'_ r��y _ �J fir;/ %`: I Y/ Class 3 Areas inferred to be unstable because slopes, generally greater than 15 per t'' u '•� f ,'-'r �rj �. cent, are underlain by weak, unstable materials in which old or recently '� , /n✓� l �, r J�+/ active landslides have occurred. Includes areas of sand and gravel on top '� � , � � ��• ��, /•' of impermeable silt and clay, mostly along steep valley sides. �/` ( �' •i:= i � � ��-- ' �' ,',-mot• `-�% �'/�`�� 2 5 Class 4 j `•' �/ ',f I -f Former landslide areas,generally within class 3 areas;include relatively large slumps,flows, and slides of soil, rock, and debris that have occurred since _....-..-�^�+"' •=-. ... .-9•iJ'Rof-a"lariers.r'rnm the rpvinn /nhntr' I P-S/III 1'PIIrC/10/1I PrP.PP„i�tn- -A (!,J,It`? , _ /X .e7.P �d V 21 `f i` ..t Y;ci- - �L..^ /;h •�\Y\�\�.-_ 7�,_ J - i. - 207. G-! (• _ d vr, / --•�-�hym(,-her 174 Ir \ - ;� { :�,. -p '/�' •LPL^ 7 ,. , Y - . et STYLE ri 'r r « � REii4 a/c gg — to u a i /' � / U_e -_- r 1 LRue 4 I Q 'LRrJ'ry 'Z / s°•�� i/Y Sunpo/nt i� ��>l U HER J ,^',/� '•+ � � mac' 'ts� / / e Y � "�/ ,f^ f/ ..J) � . A I I _ � � 7�i• O R[ N ` ♦ A ...f''i'N.k' o c f 37 ' Lk, 'L M..'r ,Ram Lake a+` ;k+ i 1 -4 a (. leS ',_'+• +~ 9J / r' ltf+ 14e ,. \o sss+s I �21'.l�"x_a , � ! •n%ScA _ 11 .. � �%' -_.� JJ��• I: Ros r/ 1i Q �,� �' • --- //J�11 _ .._ / f• � �C.. � � /�i // slo[ -=1 \ _ 0�'. ti. '•..r. - ;/ .'i' [f �• /- - �� I .'`'! f / 1.-r )' v 5' / 123°00' 1 55/ OIYMIlA i1 N J ` 6. SCALE 1:62 500 1 lfr 0 1 2 3 4 MILES " APPENDIX D Runoff Analysis DEBRA BINION SEP2001-00061 INFILTRATION VOLUME Pre-Developed 23.01 Acre previous vacant lot With cul-de-sac of which 11.78 acres is tributary to sediment ponds Table D.2-Wood or Forest,Young 2nd Growth/Brush Curve Number for Group C Soil-Young Second Growth 81 -4.025 inches of runoff Curve Number for Group C Soil-Meadow/Pasture 85-4.445 inches of runoff Curve Number for Group C Soil- 89-4.88 inches of runoff Curve Number for Impervious-98-5.91 In of Runoff Post-Developed Table D.2 Mountain open area,Low brush/Grassland Curve Number for Group C Soil-89-4.88 Inches of Runoff Curve Number for Impervious-98-5.91 In of Runoff Proposed to Clear cut leaving a number of trees for buffer Driveway-815 X 20 = 16300 SF= 0.37 Acres 2-Stormwater ponds 160'x 92'= 29440 SF= 0.68 Acres Total Proposed Impervious Driveway= 0.37 Acres Proposed storm= 0.68 1.05 Acres= 12% Impervious Per Appendix D Pre-logging [(4.025in/12in/ft)(8.54Ac)(43,560sf/Ac)]+[(5.91in/12in/ft)(0.93Ac)(43,560sf/AC)]= 157747 CF Post Developed assume 0.59 Acres impervious [(4.88in/12in/ft)(8.54Ac)(43,560sf/Ac)]+[(5.91in/12in/ft)(0.93Ac)(43,560sf/AC)]= 171233 CF Infiltration Volume Required= Post Develop-Pre Developed= 171,233 157,747 = 13,485 CF STORAGE VOLUME Assume a conservative infiltration rate of 1 in/hr and 0.93 Acres impervious Per DDECM Pg 4-5 Minimum Storage Volume Required Per Acre of Disturbed Pervious = 3,818 CF/Ac Minimum Storage Volume Required Per Acre of Impervious Pervious= 11,455 CF/Ac (3818)(8.54)+(11455)(0.93)= 43,259 CF POND SIZING Assume 3 It deep Minimum Pond Volume= 43,259 CF 2 Ponds ®Top Area Size is 160'X 92' 13,244 SF Top Bottom area 0 4 ft deep= 8,060 SF Bottom Volume=[(13244+8060)/2)'2]'(4)= 85,216 CF DISPOSAL RATE Assume 1 in/hr infiltration rate With 2 ponds @ 9672 SF Disposal rate in CFS=(1 in/hr)(1 hr/3600sec)(1 ft/12in)(8060SF'2)= 0.37 CFS r`bW fil.w11438—\&.iuy.Si gUrdb1. da APPENDIX E HYDRA Files C:\HYDRA\CMD\ HYDRA Version 5.85 j .w.morrissette & associates Page 1 ------------------------------------------------------------------------------ ------------------------------------------------------------------------------ C: \HYDRA\CMD\BINION.CMD 15:11 2-Aug-101 NONE Status of DEFAULTS at start of run. Command file : C:\HYDRA\CMD\BINION.CMD Input units are read as USA warnings are turned OFF Output sent to display Detailed Output sent to printer Off Output sent to file Detailed Paper width in inches 8.000 String to reset printer NOT SET String to set printer to compressed NOT SET String to set printer to 8 lines/inch NOT SET Name of printer NOT SET Print heading at top of page ON Number of steps in hydrograph 96 Step length in minutes 15 Significant flow in hydrograph 0.010 Infiltration Diurnalization Factor 0.980 Maximum plot value Selected by HYDRA Type of hydrographic plot Compact Sanitary flow by Diurnal Curve Delay to start of actual storm 0.00 Rational Method computations OFF SCS computations Santa Barbara Continuous simulation computations ON Maximum d/D for pipe design/analysis 0.900 Match point position on pipe 0.00 or Invert Number of allowable diam drops 999 Mimimum drop thru manhole 0.000 Manning's n Variable Routing technique Quick Calculate sanitary flows ON Calculate infiltration flows ON Calculate misc flows ON Listing of acceptable diameters (Changed by the PCO command) : 4 6 8 10 12 15 18 21 24 27 30 33 36 39 42 45 48 54 60 66 72 78 84 90 96 102 108 114 120 132 ------------------------------z JOB BINION CLEAR CUTTING - STORMWATER DESIGN 2: REM 10 YEAR EVENT FOR DETENTION SIZING 3 : 4: 5: FIL C:\HYE\10ZONEI.INC ------START OF SUB-FILE------ 1: HYE 15 0.103 0.103 0.103 0.103 0.103 0.103 0.120 0.120 0.120 0.120 0. 155 + C: \HYDRA\CMD\ HYDRA Version 5.85 3 .w.morrissette & associates Page 2 C: \HYDRA\CMD\BINION.CMD 15:11 2-Aug-101 BINION CLEAR CUTTING - STORMWATER DESIGN 2 : 0.155 0.155 0.155 0.172 0.172 0.181 0.181 0.201 0.201 0.212 0. 212 0.234 + 3 : 0.234 0.245 0.245 0.312 0.312 0.297 0.705 1.824 0.375 0.308 0. 316 0.256 + 4: 0.427 0.227 0.227 0.227 0.227 0.272 0.295 0.180 0.200 0.186 0. 186 0.186 + 5: 0.186 0:204 0.204 0.192 0.208 0.191 0.191 0.191 0.191 0.191 0. 191 0.176 + 6: 0.176 0.146 0.142 0.142 0.142 0.142 0.142 0.112 0.101 0.083 0. 072 0.072 + 7 : 0.072 0.072 0.072 0.072 0.072 0.072 0.072 0.072 0.072 0.072 0. 072 0.072 + 8: 0.072 0.072 0.072 0.072 0.062 0.062 0.086 0.083 0.083 0.083 0. 083 0.083 + 9: 0.083 Step time 15.00 Minutes Total in original hyetograph 4.35 Inches Total volume rain in production hyetograph 4.35 Inches Maximum intensity 1.82 Inches/Hr 10: RET ------ END OF SUB-FILE ------ 6: NEW PARKING LOT STORMWATER TO BIOFILTER 7: REM --- ROOF RUNOFF TO DRY-WELLS 8: f 9: CHD 6, 0.3, 0.03, 3, 2, 3, 1.0, 0, 0, 0, 0 I 10: SCS 8.54, 0.12, 98, 89, 20, 0.14, 100 Computed concentration time 0.22 Minutes Total Time of Concentration 0.22 Minutes Total rainfall falling on impervious 16183 .03 CuFt Impervious runoff 15305.26 CuFt Portion off impervious 94.58 % Peak CFS rainfall falling on impervious 1.88 CuFt/Sec Peak CFS runoff from impervious 1.84 CuFt/Sec Equivalant "C" off impervious 0.97 Total rainfall falling on pervious 118675.59 CuFt Pervious runoff 86012.41 CuFt Portion off pervious 72.48 % Peak CFS rainfall falling on pervious 13 .82 CuFt/Sec Peak CFS runoff from pervious 10.70 CuFt/Sec Equivalant "C" off pervious 0.77 Total rainfall falling on segment 134858.62 CuFt Total segment runoff 101317.67 CuFt Portion off segment 75.13 % Peak CFS rainfall falling on segment 15.71 CuFt/Sec Peak CFS runoff from segment 12.54 CuFt/Sec Equivalant "C" off segment 0.80 C: \HYDRA\CMD\ HYDRA Version 5.85 j .w.morrissette & associates Page 3 C: \HYDRA\CMD\BINION.CMD 15:11 2-Aug-101 BINION CLEAR CUTTING - STORMWATER DESIGN 11: CHA 100, 20, 6, 19.5, 5.5 Length 100.00 Feet GrUp 20.00 Feet GrDn 6.00 Feet InvUp 19.50 Feet InvDn 5.50 Feet Link number 1 @Adding Sto into Event @Adding Diurnal into Design @Adding Event into Design Average Design Flow 0.00 CuFt/Sec Storm flow (no SF) 12.538 Cuft/Sec Design flow including SF 12.538 Cuft/Sec Combined SF 1.000 CHD Maximum velocity 6.0000 FPS CHD Minimum velocity 0.3000 FPS CHD Mannings "n" 0.0300 CHD Left side slope 3.0000 CHD Bottom width 2.00 Feet CHD Right side slope 3.0000 CHD Minimum freeboard 1.0000 Feet CHD Exfiltration 0.0000 IPH Channel Slope 0.1400 Design flow 12.54 Cuft/Sec Depth of flow 5.34 Inches 0.45 Feet Velocity 8.48 Ft/Sec Travel time 0.20 Minutes Width of surface 4.67 Feet 12 : 13 : RED (0/0.37, 85216/0.37) 14: RES 4, 5, 6, OVER, 85216 Number of points on Volume/Discharge curve 2 Maximum capacity of reservoir 85216.00 CuFt Inlet elevation 4.00 Feet Outlet elevation 5.00 Feet Link number 2 @Adding Sto into Event @Adding Diurnal into Design @Adding Event into Design Average Design Flow 0.00 CuFt/Sec Storm flow (no SF) 12.538 Cuft/Sec Design flow including SF 12 .538 Cuft/Sec Combined SF 1.000 15: 16: END C: \HYDRA\CMD\ HYDRA Version 5.85 j .w.morrissette & associates Page 4 C: \HYDRA\CMD\BINION.CMD 15:11 2-Aug-101 BINION CLEAR CUTTING - STORMWATER DESIGN ------ S U M M A R Y O F A N A L Y S I S ------ Run number on command file 18 Number of links 3 Number of hydrographs 40 Total sanitary population 0 Total sanitary area 0.00 Acres Total storm area 8.54 Acres Number of pumps 0 Number of reservoirs 1 Number of diversion structures 0 Number of inlets 0 Length of new pipe 0.00 Feet Length of existing pipe 0.00 Feet Length of channel 100.00 Feet Length of gutter 0.00 Feet Length of transport units 0.00 Feet Length of pressure pipe 0.00 Feet Closing DBF and NDX Files C: \HYDRA\CMD\ HYDRA Version 5.85 j .w.morrissette & associates Page 1 ----------------------------------------------------------------------------- ----------------------------------------------------------------------------- C: \HYDRA\CMD\BINION.CMD 15:11 2-Aug-101 CFS BINION CLEAR CUTTING - STORMWATER DESIGN *** PARKING LOT STORMWATER TO BIOFIL Channel Long Invert Surf FreBrd Width Shape San Sto Flow Estimated Link Slope Up/Dn Up/Dn Up/Dn Depth L/C/R Inf Mis Vel Cost 1 100 19.50 19 .95 0.1 4.67 3 .000 0.00 12.54 12.54 0 0.1400 5.50 5.94 0.1 0.45 2 .00 0.00 0.00 8.48 3.000 Froude Number = 2 .65 ---------------------------------------------------- Lateral length= 100 Upstream length= 100 ---------------------------------------------------- Lateral length= 0 Upstream length= 0 *** PARKING LOT STORMWATER TO BIOFIL Reservoir Cost Invert -------------- Maximum Flow Values ----------------- Link Exfil Up/Dn/Ovr San Inf Sto Mis Design 3 0 4.00 Incoming 0.00 0.00 12 .54 0.00 12 .54 0 5.00 Discharge 0.00 0.00 0.37 0.00 0.37 6.00 Overflow 0.00 0.00 0.00 0.00 0.00 Stored 0 0 72592 0 72592 ---------------------------------------------------- Lateral length= 100 Upstream length= 100 APPENDIX F Mason County Maintenance and Operation Covenant RETURN ADDRESS GRANTOR(S) (Last, First and Middle Initial) GRANTEE; MASON COUNTY DEPARTMENT OF PUBLIC WORKS DECLARATION OF COVENANTS ASSOCIATED WITH PRIVATELY MAINTAINED STORM DRAINAGE FACILITIES Declaration of Covenant In consideration of approval of the development known as relating to real property legally described as follows: County Assessar► s Property Tax Parcel Number The undersigned, as owner(s), covenant and agree that: 1. If at any time Mason County reasonably determines that maintenance or repair work is required to be done to the existing,approved storm drainage facilities installed on the property described above and located outside of any public right-of-way (which will mean repair and or clean out of the existing system only to the same standards as originally installed and approved), the Director of the Department of Public Works shall give the current owners seven days notice that the County intends to perform such maintenance or repairs, or to have them performed by others. If the current owners have not completed or are not diligently pursuing the repair or maintenance of the system and it becomes necessary for Mason County to perform the work, the current owners will assume responsibility for the cost of such maintenance or repair and will reimburse the County within thirty days of receipt of the invoice.Overdue payments will require payment of interest at the current legal rate for liquidated judgments, and any costs or fees incurred by the County, should any legal action be required to collect such payments, will be borne by the parties responsible for said reimbursements. 2. If at any time Mason County reasonably determines that the existing and approved storm drainage system on the property poses a hazard to life and limb, or endangers property, or adversely affects the safety and operations of a public way, due to failure, damage or non-maintenance of the existing on-site storm system, and that the situation is so adverse as to preclude written notice to said owners,the Director of the Department of Public Works may take the measures necessary to eliminate the hazardous situation(which will mean repair or clean out of the existing system only to the same standards as originally installed and approved)provided the Director has first made a reasonable effort to locate said owner before acting. The current owners will assume responsibility for the cost of such maintenance or repair;and will reimburse the County within thirty days of receipt of the invoice.Overdue payments will require payment of interest at the current legal rate for liquidated judgments,and any costs or fees incurred by the County, should any be borne by the parties responsible for said reimbursements. 3.The owner shall keep the Mason County Public Works Department informed at all times as to the name, address and telephone number of the contact person responsible for the performance of maintenance or repair work to the storm drainage facilities. These covenants are intended to protect the value and desirability of the real property described above,and to benefit all the citizens of Mason County.They shall run with the land and be binding on all parties having or acquiring from the current owners or their successors an right,title or interest therein P g q g Y g , > and to the benefit of all the citizens of Mason County. Signature Signature Owner Owner Address Address City, State, Zip City, State, Zip Phone: Phone: STATE OF WASHINGTON, ss. (INDIVIDUAL ACKNOWLEDGEMENT) County of MASON" 1, ,Notary Public in and for the State of Washington, residing at do hereby certify that on this day of , 19_,personally appeared before me to me known to be the individual described in and who executed the within instrument and acknowledged that signed and sealed the same as free and voluntary act and deed for the uses and purposes herein mentioned. GIVEN UNDER MY HAND AND OFFICIAL SEAL this day of , 19 Notary Public in and for the State of Washington, residing at in said County. My Commission expires f APPENDIX G Stormwater Site plan sk r Lcx — , 18 T R BASIN 1 3 6 35 4 3 c 31 o ! ` 12 ox, El 9.5' 10 i ,o4 2 ❑ ASI 91 Ac LOT 2 e ....... :_.,...�... ^ f r ioo FEET 0 6 �Y{ 0 23 50 too f 1 ��� f•. L T 3 _0 4 DIVERT XISITNG ITC E S �A ? TO SED ENT P❑ S r . a RIP R INLET P❑ D 20 2 / J 6 I 8 f � S���~, SILT FENCE 14 12 ir- 4 LF 12' ADS 12 6 L T 4 4 5, Q � I Q i 8 i SEDIMENT POND B SEDIMENT 160'x92' POND A 4 FT DEEP 160'x92' Approx. El, 6' 1 FT FREEBOARD 4 FT DEEP 42,608 CF 1 FT FREEBOARD SILT FENCE 42,608 CF s r GENERAL NOTE: 6 ' 1. CONTOURS DEVELOPED FROM FIELD ❑BSEVATIONS 2. REPLANT ENTIRE SITE EXCEPT HOUSE FOOT PRINT NO DATE BY APPI REVISIONS Approved By Oro B1 '-o�j B I N I O N _ C1rB•Munk*W*Ceotectwkd Ength@wi rq and Pfomnlnq RI neio, OC�DBy DA7 STORM SITE PLAN CLEAR CUTTING — 1700 Cooper Port Reed SW,fe-2,0",pik WA 9W2.1110•L%O)352-9456•FAX L%o 352-9990 DATE PLOMD 01143-1 SHT 1 OF 2 � u 1 FOREST PRACNICE BAS E MAP TOWNSHIP 21 NORTH , RANGE 03 WEST ( W . M SECTION 36 APPLICATION � II 385389 385390 38 391 SPRING 229 230 I 842 1 1 200 J I � o 2❑ r 83069 38 I / SCALE 0 1000 2000 3000 4000 5000 6000 FEET 1 Mile (528D n> MAP DATE: May 17, 2001 CONTOUR INTERVAL : 40 Feet LEGEND : See Instructions NAD 27 DISCLAIMER : See Legend water/wetlands including their location and class may be incorrectly displayed or not shown on the Base Map. Applicants are responsible for verification and correction of all streams, wetlands, and possible water courses.