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Wetland Report 12122007WETLAND DETERMINATION REPORT & HIGH GROUND WATER REVIEW PREPARED FOR: Sara Foster LOCATION: 14104 89`" Ave. SE, Yehn, WA Section 14, Township 17N, Range IE PREPARED BY Heidi Hashnger Of Conservation Northwest, Inc. DATE: March 3, 2005 ATTENTION: Sandy Norton Of Thurston County Development Services (360) 754 -3355 Eat. 7739 T >i'•.1njTCN COUNT'` n ply,_ - upi , j,,-T EhV!C[c Prepared for: Sam Foster (Owner) 14104 89'"Avenue, SE, Yehn, WA 98597 Home: (360) 4584955 Work: (360) 4584945 Property Address: Same as above. Property Location: Section 14, Township 17N, Range IF Tax Parcel: 75200900000 (19.85 acres) Field Work: January 28'" & February 11, 2005 Report Date: March 3, 2005 Executive Summary This 19.85 acre property, owned by Sam Foster and located on the Yehn prairie, was reviewed for the presence of wetlands. Aside from directly within the creek channel, no wetlands were identified on the site either adjacent to Thompson Crcek, which traverses the eastern side of the property from south to north, or elsewhere. This is contrary to item number 6 in a letter dated January 11ih, 2005 from Sandy Norton to Corina Hayes of Skillings— Connolly, indicating that a site visit confirmed wetlands associated with Thompson Creek. Approximately 4 years ago, in an effort to keep Scotch broom, an invasive/exotic plant species, from spreading into the creek channel, Sara Foster had a 30 to 50 foot wide swath of the encroaching shrub mowed down on the eastern side of the steam. This now grassy area looks like a wetland as it has Thompson Creek next to it on its western side and on its eastern side, there now is a distinctive vegetative change where the unmowed Scotch broom remains. At first glance, it looks like this scenario might naturally have occurred on account of a hydrological change, ie., a shift from low elevation wedand ground beside the creek into higher elevation upland ground where the Scotch broom begins. Quite remarkably, as one walks through this area, there is very little to no elevation change between the grassy swath and the Scotch broom field beside it. Regarding Thompson Creek, it was confirmed as a Type 3 stream by Debbi Camevali of the Department of Fish & Wildlife and therefore carves a 100 foot buffer from either side of its ordinary high water mark according to the `Thurston County Critical Areas' of June 1996 (Chapter 17.15). As full wetland conditions only were found to exist directly within the baddul width of the steam, this area was not additionally identified as a wetland. This area already is completely protected by the stream buffer. The wetland detemdaation was conducted in accordance with the'1987 Guidelines', Corps of Engineers Wetland Delineation Manual and the 'Washington State Wetlands Identification and Delineation Manual', March 1997. The'Revision of the National List of Plant Species that Occur in Wetlands', February 1997, was used for plant ratings. P.O. Box 596, Rainier, WA 98576 Phone: (360) 8944884 Fax: (360) 894 -4883 Study Summary Please refer to Study Map, Field Data Forms and Site Plan by Skillings- Connolly. Six plots were made in and around the stream and elsewhere on the property to characterize the nature of this prairie land and to substantiate the conclusion that no wetlands were found on the property outside of the stream channel. Plot I was made east of the creek within the mowed grassy swath and approximately along the proposed boundary line between Lots 1 and 3. A 67% upland plant community was observed here with Oregon ash, evergreen blackberry and quackgrass as the dominant species. The soil was a hydric, black - colored organic loam/gravelly loam to a depth of 16 inches. Plot 2 was made a ways into the unmowed Scotch broom field southeast from Plot 1. The elevation of this sampling point was at most 6 inches higher than Plot 1. A 67% upland plant community also was discovered here with Scotch broom, quackgrass and Colonial bent grass as the dominant species. The soil was a marginally hydric, black colored gravelly loam to 16 inches. Plot 3 was made east of the creek near to the southern property boundary. A 100% upland community was found here with Ncotka rose, cleavers and quackgrass as the dominant species. The soil here was found to be the same as described in Plot 2. Wetland hydrology in the vicinity of the above three sampling points was not attributed as this area along the eastern side of Thompson Creek is a contiguous part of the surrounding prairie. There is no apparent wetland drainage pattem here, such as a notable elevation change, except for the creek bank itself Additionally, no saturation was noted within the top 12 inches in any of these plots. The western side of the creek also is a contiguous part of the surrounding prairie aside from a man -made berm of soil set at its western edge that was created from the channelization of the stream many years ago. Aside from during flood years, this creek only flows from between 10 days and 3 weeks out of the year typically between the months of February and April and may be somewhat dependent on an upstream lake/large pond that has a regulated outflow (information provided by Sara Foster). The creek bottom fies approximately 3 to 3.5 feet lower in elevation than the agricultural plateau; it has a bottom width on average of 5.6 feet and an average width between the banks of the ordinary high water mark of 13.8 feet (measurements provided by Sara Foster). Plot 4 was made in the creek bed itself and a gravelly loam, black - colored hydric soil was found here to 16 inches and a 100% wetland plant community was observed with reed canary grass as the only dominant plant. Plot 5 was made on the southeastern side of the property at a perk hole located in an area also previously mowed of its Scotch broom and at an elevation between 1 and 1.5 feet higher than Plots 1, 2 and 3. A 67% upland plant community was observed here with Scotch broom, Colonial bent grass and quackgrass as the dominant species (the same ratio as noted in Plots I and 2). The soil in this perk hole, labeled Perk Hole A, was a loam with some gravel to 27 inches followed by a very gravelly sandy loam with cobbles to 43 inches. The only hydric coloration showed up in the top 18 inches. It should be noted that from the Sod Survey of Thurston County, Washington, June 1990, the somewhat excessively drained Nisqually loamy find sand ( #74) is indicated for the majority of the low elevation prairie land on this property. It is characterized as having black to very dark gray coloration in the top 18 inches. The somewhat excessively drained Spanrvay gravelly sandy loam ( 4110) also is indicated for the property and is characterized as having black soil coloration in the top 15 inches. This is consistent with the soil coloration observed in Plots 1 through 5. Plot 6 was made on the southwestern side of the property at the base of a 15 to 20% sloped hillside that marks the western side of the property. A 100% upland plant community was observed here with quackgrass as the only dominant plant variety. The soil in this perk hole, labeled Perk Hole B, was • bright brown mineral soil with varying consistency from a gravelly loam/silt loam in the upper layers to • very gravelly silty clay loam in the lower layers. Moderate mottling (10 to 15 %) was noted below 30 Page 2 inches and significant mottling (20 to 35 %) was noted below 45 inches. The saturation level was measured at 47 inches below the soil surface. No hydric coloration was noted to 50 inches. Even though Plot 6 was made near to the base of a moderately steep hillside, no wetland hydrology was attributed to either Plots 5 or 6 as both areas are continuous with and at similar elevation to the surrounding prairie area. Based on the study plots outlined above, no wetland areas were identified or delineated on the 19.85 acre Foster property. The other related critical areas are the 100 foot stream buffer which is indicated on the site plan prepared by Skillings- Connolly, htc. (see Site Maps) and the high ground water flood hazard area which is discussed in the next segment of this report. HIGH GROUND WATER REVIEW Please refer to Study Map, Perk Hole Data Sheets, Site Plan by Skillings - Connolly & Aerial Photo with Overlay, With permission from Sandy Norton of Thurston County Development Services, a review of the high ground water potential for this property is included as a second topic in this report. It addresses item number 7 in the January 111h 2005 letter to Corina Hayes from Sandy Norton, Flood Hazard Ground Water Ground water flooding events occur on an approximate 20 year cycle according to the Salmon Creek Drainage Basin study synopsis on the Thurston County web site. After several consecutive years of heavy rains the upper aquifer overflows into low elevation areas. The available raw data from the most recent ground water flooding event is from the December 12's, 1997 infix -red aerial photo. A blow -up of this aerial photo in the vicinity of the Foster property was purchased from the Washington State Department of Transportation Aerial Photography Lab (with permission to copy for internal purposes). When the areas of open water seen in this photo are compared to the area indicated on Thurston County Geodata Center site, it is clear that the Geodata site has incorrectly offset the area to the northwest by approximately 150 feet. As such, this reference information only was used as a guideline. A study of the aerial photo was conducted to determine the extent of the open water on the site. The difference between open water areas and shaded tree areas, although difficult, was discernable. The boundaries of the prominently flooded areas were traced from this aerial photo and digitized by Skillings- Connolly onto their site plan. When compared to the Thurston County contour data included on the site plan, the high ground water flood hazard areas coimcide roughly with the 316 foot contour line which predominantly located on the southwestern side of the property at the base of the 15 to 20% sloped hillside. This area is approximately 300 feet west from the creek. It should be noted that the 316 foot contour line itself was used as the southwestem edge of the main flood hazard area as the tree shadows completely darkened this part of the photo. According the Thurston County Critical Areas ordinance, section 17.15.865, a 50 foot setback is required from the edge of these flood hazed areas as well as a 300 foot management area buffer. Both of these have been indicated on the surveyor's site plan. Page 3 Seasonal Ground Water A review of the existing perk holes along the base of the 15 to 20% sloped hillside on the western side of the property near to where the flood hazard areas me located was conducted to identify the typical seasonal groundwater level in the soil. As already noted in the wedand portion of this document, in Perk Hole B of Plot 6, moderate mottling (10 to 15 %) was noted below 30 inches, strong mottling (20 to 35 %) below 45 inches and a saturation level at 47 inches. In Perk Hole C, approximately 80 feet north of B, a strong irony color on the sand and gravel was noted below 39 inches and a saturation level at 39 inches. In Perk Hole D, approximately 270 feet north of C, moderate mottling was noted below 37 inches and a saturation level at 53 inches. In Perk Hole E, approximately 50 feet northeast from D, moderate mottling was observed below 40 inches, strong mottling below 50 inches and a saturation level at 50 inches. Perk Hole F, approximately 210 feet north of E showed moderate mottling below 43 inches and a saturation level at 50 to 53 inches. In all of these perk holes, no hydric coloration was noted to the bottom depths of these pits which ranged from 46 to 58 inches. As mottles in the soil represent areas where certain minerals, typically iron and manganese, have been solubihzed by the presence of ground water and then redeposited once the water has receded, their presence or absence in the soil can be used to determine where the seasonal water table rises to. Assuming that moderate mottling might be a result of saturated soils and that strong mottling an indicator of the presence of water, the seasonal saturation level on average was estimated to be 37.5 inches or 3.1 feet below the soil surface and the seasonal ground water level was on average estimated to be 44.7 inches or 3.7 feet below the surface. A seasonal water table in this range would coincide with the 10 days to 3 weeks that this 3 to 3.5 foot deep creek channel flows in a typical year. Because of the short duration of the flow, full anaerobic conditions have not had adequate time to develop in the soil at least to the depths of the perk holes. This explains the presence of mottles yet the lack of hydric coloration that was observed in all of the western perk holes. For hydric coloration to be present, a lower chroma color than those observed would have to be present in combination with mottles. On the day of the field study, during a lower than average year and season of rainfall, the saturation level was averaged to be 47.8 inches or 4 feet below the soil surface. One fatal bit of research painstakingly organized by Sara Foster and Laurie Barta (project manager) was the well log data gathered in about a half section size radius around the project site. Although the wells were dug at all different times of the year and have not been equalized to a baseline elevation, in general, in the welts of a depth equal to and shallower than 120 feet, the static water level (at the time that they were drilled) ranged between 39 and 94 feet and averaged 66 feet. In the wells below 120 feet down to a depth of 265 feet, the static water level ranged between 94 and 173 feet and averaged 123 feet. This data provides a basic look into the typical aquifer levels in this area. A Department of Ecology map showing the well clusters reviewed is provided in the Site Maps section. CONSERVATION NORTHWEST, INC. Heidi A. Haslinger, B.A. Sc. Wetland Specialist Page 4 Site Maps inwswn uounry iviap uutpur rage Page I of I http: / /geomapl. geodata. org/ servlet/ com .esri.esrimap.Esrimap ?ServiceName= adastralov &... 2/17/2005 uw ewU i,wULy cvlap VULpUL rage rage 1 OI 1 http: / /geomap1.geodata.orglsel letl com .esri.esrimap.Esrimap ?Se"iceName cadastralov &... 2/17/2005 i uw swu wuu�y i .ap vu�ym ragc °sue • °• http: / /geomap l .geodata. org/servlet/com. esri.esrimap.Esrimap? ServiceName= cadastralov &... 2/17/2005 http: / /geomap I. geodata. org/ servlet/com. esri. esr imap. Esrimap ?ServiceName= mdastralov &... 2/17/2005 N AvGkJR. s6r.[F': - PEeK HOLE F a,I f ry� � PEL°K HOLE F 4 Lo y MOwFG EseE � \ ` aF SCpvc) /BRA V • PERK r10LE �G £e15r ,- 1 ❑ �• _.��E'�SHED • Pcar & r .• 0tgr 1 � PLJM y pDO6 ®wEaL • A' S9T:! Avc�juc _. _.. F(PEPBXtED FO?:. SARA- F/S.TCR_ _.. _.. _._... s /7E kavzess: 14104 8`1"" RVE, sz- W-L , evR 98597- GeEVFPFJ BY: H�,a } /�St[ E2_ _LbGrS7lOr17 -SEc, 7$1."r /¢N, R 1E.____. ',. TRX 09?ew �7520090a a !iP1 i%JNSEF VR'1i0J ND/."l�WE57= „c C19. SSAaFE,7D�re: MaRcrl 3, zrws_ C _ O _ O n d � Qa�d' r o Tti: °© t ® ° U m C. N f� � W � k m � t Photo Section VFW= \ / Of \ \ Field Data Forms PREVALENCE INDEX WORKSHEET LOCATION MCI SS`li" &f SE, Ie- DATE-1�0. ;)LF/D5- EVALUATOR /-� "�tn98r HYDRIC UNIT NAME roticgrz�r Up�7IJ TRAHSEGT NO. e Frequency of Occurrence of Identified Plants with Known Indicator Status Total occurrence for all plant species Total occurrences ID'd with known indicator status E.I. value 1 2 3 4 5 Total occurrences identified with known Indicator status _ %valid occurrences Total occurrence tot all plant species PII - (117 0 ) + (2Ft , ) + (3Ff ) + (4Ffu) + (517u ) (Fo + Ffw + Ff + 5u + Fu ) WTI, 1995 Frequency of Fo FfW Ff FM Fu Occurrence Total for Facut. Facuft. Plant Species Each Species Obligate Wet Facut. Upland Upland IsiMac65: �i �Kr,-� la�Yl•CmrlS% l AA+ Total occurrence for all plant species Total occurrences ID'd with known indicator status E.I. value 1 2 3 4 5 Total occurrences identified with known Indicator status _ %valid occurrences Total occurrence tot all plant species PII - (117 0 ) + (2Ft , ) + (3Ff ) + (4Ffu) + (517u ) (Fo + Ffw + Ff + 5u + Fu ) WTI, 1995 DATA FORM ROUTINE WETLAND DETERMINATION (1987 COE Wetlands Delineation Manual) Project /Site: * 0, '4'A f $E elan Date: Applicant /Owner: �K+ County: I ...... ......... Lt,, el 'J.7 r. 41,1 .,.., State:- Do Normal Circumstances exist on the site? kes No Community 10:`zi =;Tf Is the site significantly disturbed (Atypical Situations? Yes a Transept ID: Is the area a potential Problem Area? Yes cro, Plot ID: �1 pf needed, explain on reverse.) .'cHc v ✓roan VFGFTATInN Pent Spec Stratum Indicator Dom nant Plant Soeclee Stratum Indicator Primary Indicators: Aedal Photographs Other _ Inundated 10. No Recorded Data Available r7. _ Drift Une. Sediment Deposits l2 Feld Ob..,.u.ns: s� secondary Indicators 12 or more required) ��� Depth or Surface Water: �r -`T (in.) 14. Oxitlized float Channels in Upper 12 in. Depth to Free Water in Pit rylin.) _ _ 15. Local Soil Survey Data Depth to Saturated Soil: bim, r (in.) _ FAD Neutral Test /: ,:2_ `/"V - Other- (.E.pplain in Remarkk.1 Percent of Dominant Species that are 08L, FACW or FAD % ? Z �� )excluding FAC -1. t?y J ✓ p Remarks: a S D YuJ CP.rDrJ 'y�2 . c J' Isc vvt CCT✓✓v✓✓�LC- rt.- > -�,rV� I yl ✓1 -- HYDROLOGY Recorded Data (Describe in Rar arksl: Wetland Hydrology Indicator.: Stream. Lake, or Tide Gauge Primary Indicators: Aedal Photographs Other _ Inundated _ Saturated in Upper 12 inch.. No Recorded Data Available — Water Mark. _ Drift Une. Sediment Deposits _ Drainage Patterns in Wetlands Feld Ob..,.u.ns: s� secondary Indicators 12 or more required) ��� Depth or Surface Water: �r -`T (in.) ��q'' Oxitlized float Channels in Upper 12 in. Depth to Free Water in Pit rylin.) Water - Stained Loaves I Local Soil Survey Data Depth to Saturated Soil: bim, r (in.) _ FAD Neutral Test /: ,:2_ `/"V - Other- (.E.pplain in Remarkk.1 �� Remark.: /� Cti -"" /s7.�t-Ca 42 L� J GGCR -r+7" / /tfb,,...17 V'CPs[-/ / `5 GC 4Dn/7 y C�6 4"' � 6ILC 'le 6o- a2eR. &k -)--'75 °L�k �1tLZ��s'w / 3' •EC // (el✓L �-Gn �cG��LI Lt -4�a -2 ESD48: OSM6194 PREVALENCE INDEX WORKSHEET LOCATION �,,LII-4 ?7r4l . ALP SE` /PE. -DATE- 7d'PS EVALUATOR (t &SI er - fPot _HYQR* �NAME � �=-- ANISECT NO. Frequency of Occurrence of Identified Plants with Known Indicator Status Frequency of Fo Ffw Ff Flu Fu Occurrence Total for Facuft. Facuft. Plant Species Each Species Obligate Wet. Facuft. Upland Upland �f85o �_- UwPw'fq:ass fS /9i LE13L Total occurrence for all plant species Total occurrences ID'd with known indicator status E.I. value 1 2 3 4 5 Total occurrences identified with known indicator status - valid occurrences Total occurrence for all plant spades Pit - (1Fo) + (2Ffw) + (3Ff) + (4Ffu) + (SFu ) (Fo +Fhy +Ff +% +Fu) WTI, 1995 DATA FORM ROUTINE WETLAND DETERMINATION (1987 COE Wetlands Delineation Manual) Project/Site: ILC/i' �9 � "` 'F �Fy �1.�1'i =+ Date: JGn_'�/� %s— Applicant /Owner: Smvcr Fr <Xer County: Investigator: State: OL'N c Do Normal Circumstances exist on the site? e No Community 10: , Is the site significantly disturbed (Atypical Situations? Yes Jo Transect ID: Is the area a potential Problem Area? Yes o� Plot ID: �2 (If needed, explain on reverse.) VEGETATION Dom ant Plant Species Stratum Indieaeer Dominant Plant Species stratum Indicator Primary Indicators: �ariGB_ uPG s. -- 2 LI Inundated 0. -- 3 No Recorded Data Available Water Marks Dnft lines S. -- -- 6. -- 16. -- 7. -- 1s. -- _ Oxidized Root Channels In Upper 12 in. Depth to Free Water, in Pit: uhk (in.) Water- Stained Leaves Percent of Dominant species that are 08L, FACW or FAC 1 33` (excluding FAC1. O✓ o Remarks: - ..{ .1 ceml-'7"al/ �J HYDROLOGY Recorded Data (Describe in Remarkel: Wetland Hydrology Indicators: Shashi, Lake, ar Tide Gauge `Aerial Primary Indicators: L Photographs Other Inundated _ _ Saturated in Upper 12 inches No Recorded Data Available Water Marks Dnft lines _ Sediment Deposits Dmmaae Patterns in Wetlands Feld Observations lom secondary, Indicators 12 or more required]: Depth of surface Water: (in.) ����p _ Oxidized Root Channels In Upper 12 in. Depth to Free Water, in Pit: uhk (in.) Water- Stained Leaves Local Sail Survey Data Depth to Saturated Sail: (in.) FAC- Neutral Test 0: ;;)- Jo �l6 - Other (Explain In Remarksl Remarks: IL79 Sex -k'/ UCczdpi 1 6��t �� ©6J 4e ec.Y r3 G0��7,9redc�a �✓av�d�'�dce Sr.�eo -�C� fJr�i'r�:e_ �f�a. aue'i"�ivt -,e/ %�t�rD�E,Jy !3 `�ivi GC.Pivl -G. ESO42: O9r0e/94 2 QSo PREVALENCE INDEX WORKSHEET LOCATION qj""A &t' SE DATE ✓ati2,S8 —EVALUATOR 0 L'rnrn OOr < i�Y- BRI6�itdi'f�NAME A, �W TRAN4E6T NO. Frequency of Occurrence of Iderdifmd Plants with Known Indicator Status E.I. value 1 2 3 Total occurrences identified with known indicator status - q valid occurrences Total occurrence for all plara species Fill - (1Fo) + (2Ffw) + (3Ff) + (4Ffu) + (5Fu) (Fo + Ff`v + Ff + Fiu + Fu ) El 5 WTI, 1995 Frequency of Fo Ffw Ff Ffu Fu Occurrence Total for Facutl. Facult. Plant Species Each Species Obligate Wet Facult Upland Upland uz- dmwZ yGmii$ ✓ r2y / <f� Total occurrence for all plant species Total occurrences ID'd with known indicator status E.I. value 1 2 3 Total occurrences identified with known indicator status - q valid occurrences Total occurrence for all plara species Fill - (1Fo) + (2Ffw) + (3Ff) + (4Ffu) + (5Fu) (Fo + Ff`v + Ff + Fiu + Fu ) El 5 WTI, 1995 Prciect /Site: -! Applicant /Owner: DATA FORM ROUTINE WETLAND DETERMINATION (1987 COE Wetlands Delineation Manual) Date: t_ County: State: n.rrci.. -<cA Do Normal Circumstances exist on the site? Yes No Community ID: Ll�i y Is the site significantly disturbed (Atypical Situations? Yes No Transact ID: Is the area a potential Problem Area? Yes No Plot ID: (— (if needed, explain on reverse.) VEGETATION Dominant Plan, Soecies Stratum Indicator Dam ant Plant Soecies Stratum Indicator 1. [t, �- .3 � S. Other 2. E' /`tyF/ to. No Recorded Data Available 3. /]¢rT.� A�JFetSC— 11. 4Tr 1. —_ S. — _ is. 6 Oxidized Root Channels in Upcar 12 in. 14. Water- Stained Laevea 7. Local Soil Survey Data FAC Neutral Test 19:3 is. Other (Explain in Remarks) 6. 16ACCc�2GG r2G�Cf GP�rzL` 7�0 Gait°– -8f �i2LF' c� �j�t+h -yo5 16. _ Percent of Dominant Species that are OBL, FACW or FAC l )excluding PAC -l. Remarks: HYDROLOGY Recorded Data (Describe in Remarks): Wetland Hydralagy Indicators: Stream, Lake, or Tide Gauge Primary Indicators: Aedal Photographs Other Inundated _ Saturated in Upper 12 inches No Recorded Data Available Weer Marks —_ Drift tine _ Sediment Deposits Drainage Patterns in Wetlands Feld Observations: / Secondary Indicators 12 or more required): Depth of Surface Water: P ✓!�!YIO (in.) � Oxidized Root Channels in Upcar 12 in. ��,", Oapth to Free Water in Pie [y�y_(in.) Water- Stained Laevea /�. ������nn 66'� Depth to Saturated Soil: �L (in.) Local Soil Survey Data FAC Neutral Test 19:3 Other (Explain in Remarks) 16ACCc�2GG r2G�Cf GP�rzL` 7�0 Gait°– -8f �i2LF' c� �j�t+h -yo5 C�fZ/C NO C . 'v 'f ESO4e: 09106/24 DATA FORM ROUTINE WETLAND DETERMINATION (1987 COE Wetlands Delineation Manual) Project /Site: I�CINC 3" / 1*—e 5,— TJF -C .'., Date: 7—fan.. Applicant /Owner: .S ..-„ 9. County: / Investigator: 46C14 c 4, 3. State: 1,6,' Do Normal Circumstances exist on the site? ;ee Na Ker. arc Community Is the site significantly disturbed (Atypical Situations? as W' Transept ID: Is the area a potential Problem Area? Yes 6 Plot ID: �1 (If needed, explain an reverse.) Percent of Dominant species the, are OBL, FACW or FAC VEGETATION Dominant Plan, Species Stratum Indicator Dammam Plant Soec Strarum Inaioetor, 1. PIL41at7 . aledlt uncap t� U 9. 2. 10. 3. 11. 4. 12. S. 13. 6. 14. 7. is. a. 16. _ Percent of Dominant species the, are OBL, FACW or FAC IascludinB FAD). o Remarks: .o Pl�zt �,�u"�✓ , s rzy�r�P�� . HYDROLOGY Recorded Data (Describe in Remarks): Stream, Lake. or Tide Gauge Aerial Phat.w.phs Other No Recorded Data Available Feld Observauons: Depth of Surface Water !'+ (in.) AlbJd Depth to Free Water in Pit: (in.) Depth to Saturated Soil: k-16 " .(in.) Wetland Hydrology Indicators: Primary Indicators: _ Inundated _ Saturated in Upper 12 inches _ Water Marks _ Drift unee Sediment Deposits r/ Drainage Panama in Wetlands S ... no., Indicators (2 or more required): _ Oxidized Root Channels In Upper 12 in. _ Water Stained Leaves _ Local Sail Survey Data _ FAC- Neutral Test Other (Explain in Remerksl Remerkr. �L/ tLV� ✓ / / i`Lt.� 7 �i -Se�iZ olu�vi --eee ho -644 OtyY$ct� c� ?zcr�-la�e i ESO4a: OSM6/94 -P PREVALENCE INDEX WORKSHEET LOCATION N10 �f %� �{k'. '5F DATE dltvl, EVALUATOR lmWN 1+ NAME S'�s clti /jr+�n -n,, �lJ�iz�,.+/ 7FLIPISECT NO. S� COR�� I✓�04'fcr LL?4rz /� � -tom Frequency of Occurrence of Identified Plants with Known Indicator Status Frequency of Fo Ffw Ff Ffu Fu Occurrence Total for Facuft. Facult. Plant Species Each Species Obligate Wet. Facuk. Upland Upland -z�• sD`7. �!�✓6s ' C,o tg,7 z- Total occurrence for all plant species Total occurrences IlYd with known indicator status E.I. value (G x, 7,. ID is> 1 2 3 4 Total occurrences identified with known indicator status . %valid occurrences Total occurrence for all plant species (1 Fo) + (2Fhv) + (3Ff) + (4FM) + (SFu ) ! Ply (Fo + Ffw + Ff + Fiu + Fu ) / %, 5 win, 1995 DATA FORM ROUTINE WETLAND DETERMINATION (1987 COE Wetlands Delineation Manual) Project/Site: /l{ {G rl i^ ' /iLf SE- ��GY -n Date: JAn 2B�Cr r Applicant /Owner: �i., -n �-r �,4 -.0- Investigator: - 4 l - County: State: (,."I Do Normal Circumstances exist on the site? No Is the site significantly disturbed (Atypical Situations? Yes Community ID: � hl Transect ID: Is the area a potential Problem Area? Yes moo.' (if needed, explain on reverse.) 6; Plot ID: VEGETATION Ocnrinirr, Plant Species Stratum Indicator Dominant Plant Soec Stratum Indicator 1. Ct 5 r.. iJDi 9 Other 10. Inundated _ Saturated In Upper 12 inches No Recorded Data Available 4. 12. _ Drift Linea S. 13. — E. ?O Iin.) 14. Depth m Free Water in Pit: 7. _ Oxidized Root channels in Upper 12 in. is. 8. Oepm to Saturated Soil: 16. _ Local Soil Survey Data FAC- Neunai Test Percent of Dominant Species that are OSL. FACW or FAC �3 eadudinp FAC.). 'LQ -/G[PJ /J / /- 1'cv/ iccy{y / iaw 3 Ferrante: %1t fe. P�- >,t Gp- rvro2ccrw�i>; l3 /C�j -j — �U�cerg�i2� ?. HYDROLOGY Recorded Data (Describe in Remarks): Welland Hydrology Indicators: ::�Stream, Lake. or Tide Gauge Primary Indicators: Aanal Photographs Other Inundated _ Saturated In Upper 12 inches No Recorded Data Available Water Marks _ Drift Linea _ Sediment Deposits Drainage Patterns in Wetlands Field Observations; Depth of Surface Water. ?O Iin.) Seconds" Indicators 12 or more revuiredl: Depth m Free Water in Pit: p ✓�tf (in.) _ Oxidized Root channels in Upper 12 in. _ Water- Stained Leaves Oepm to Saturated Soil: 1 NL (in.) _ Local Soil Survey Data FAC- Neunai Test Other (Explain iinn� Remarks) m ,/ Rearkr.l9.CQJ f 'LQ -/G[PJ /J / /- 1'cv/ iccy{y / iaw %1t fe. ESO46: 09/06194 I/ PREVALENCE INDEX WORKSHEET LOCATION 141O4 Y01 /4W^ 'c DATE �f O DS EVALUATOR &Idl ` �1�'4k -✓ C�w�l� - p/BSf HYGT NAME %OC CP !Tr3s iRANEf T NO. 6, J 611�rY Qum Sd.:<Ggrovey �,'�lcinc x.nL Frequency of O=ffence of Identified Plarns Sa.,�rs with Known Indicator Status Frequency of Fo Ffw Ff Ffu Fu Occurrence Total for Facuh. Facuft. Plant Species Each Species Obligate Wet. Facult. Upland Upland BvEPidu�L'✓ �5% �P ;, r Total occurrence for all plant species Total occurrences ID'd with known indicator status m E.I. value 1 2 3 4 5 Total occurrences identified with known indicator status . valid occurrences Total occurrence for all plant species Pli (1Fo) + (2Fty) + (3Ff) + (4Ffu) + (517u) (Fo + Ftw + Ff + Fiu + Fu ) WTI, 1995 DATA FORM ROUTINE WETLAND DETERMINATION (1987 COE Wetlands Delineation Manual) ite: ( D %�� Ate i _ L �?LL,., Date:Gr7 lOwner: Jounty: T�� or: State: ter? al Circumstances exist on the site? es - No E Community ID: significantly disturbed (Atypical Situations? Yes dNa Transact ID: a a potential Problem Area? Yes Plat ID: ed, explain on reverse.) 11. VEGETATION Dominant Plant Soec Stramm Indicator Dom ant Plant Soec es Stratum Indicator z%fJ�ct— l Photographs 9. 7R. Inundated 10. ta Available 3. 11. 4. 12. _- 5. 13. Water - Stained Leaves 6. _ 14. Other (Explain In Remarks) E' _ 15. Percent of Dominant Species that are OaL, FACW or FAD (excluding FAC-1. Remarks: ;3 «_�u�d�p z. HYDROLOGY Describe in Remarks): Wetland Hydrology Indicators: m, Lake. or Tide Gauge Primary Indicators: l Photographs 7R. Inundated Saturated in upper 12 inches ta Available Water Marks Drdt lines Sediment Deposits Drainage Patterns in Wetlands Depth of Surf... Water: 71 _ (in.) Secondary Indicators (2 or more required): Depth to Free Water in Pit: n> lin.) _ Oxidizes Roat Channels in upper 12 in. Water - Stained Leaves 1 Depth to Saturated Sail: _ (in.) L ocal sod survey Data PAD Neutral Test Other (Explain In Remarks) Remarks: `c�m'r4.+ /�tcX S: oCF Gr.`Q7�it'[m� �✓�v_�/�.�� Cc ��t:a rzd� G��nL�zc.14.� J C? s /iz114, a-4 1189 s/ fv 3. E904s: 09/08194 SOILS YC4 11pee C (- M ime z/ g is Phase - NCGCILtQE -/ /CC!!'�ty Tj .C<'II?L� Drainage Class: �� Feld Observations Confine Mapped Type] Yea No Profile Description: Depth Matrix Color Mottle Colon Mottle Texture. Concretions (inches) Horizon (MunsNl Moistl (Mansell Moist) Abundance /Contrast Structure. etc. /e Cl2�LtiF. �PGtvn w3 I�et - �eY /J✓llr�yCLN SNr♦Liy lORVh �y i� %Dny LDeK /-; r,AL,Yl'i 5r /n,1 % 3 3fy "_ v'o( VZ✓ Sgnc� Hyddc Sail indicators: Hiatosal Concretions Histic Epipedon High Organic Content in Surface Layer in Sandy Soils _ Suifdic Odor Organs Streaking in Sandy Soils Aquic Moisture Regime Listed on Local Hydric Soils List Reducing Conditions Listed on National Hydria Soils List Glayed or Low-Chrome Colors Other ,Explain, in RR�amarks) !2 /� �✓ Grldiu�i� eu,ZcY' a �2rwiQ+t -cam I7¢77�' 4411 1 C.J /bcs -rU%/ SOILS A-4 #S,6? D --) --h-, "A)YI'I, rn 1,2.4 kA& G) Map Unit Name ,.t // nn (Series and Phta l-# f / 3Gr�22� GC<l {YLy AY - --t ),,/ Orange Class: —�— Fnk1 Obseryations Taxonomy ISubgroupl: Confirm Mapped Typal Yea No Profile Oescriotion: Depth McMx Cola, M.W. Colo,. M.M. Texture. Con,etions inchesl Harixen (Munsall Moist) IMUnsell Moist) Abundance /Contrast Structure, at.. Ii 2t '� F'7✓'- � —fin y!/g a.. !G% l�iru� s� # lnam u� Hydric Soil Indicators: y3 �cLf(.Gf a''h/Un iT Ot,-, ) 0Lf C✓ 3" Mat ... I Concretions _ Histie Epipedpn High Organic Content in Surface Layer in Sandy Soils _ Sulfidic Odor Organic Streaking in Sandy Soils AQuic Moisture Regime Listed on Local Hydric Soils List Reducing Conditions Listed on National Hydnc Soils List Glayed or Low - Chrome Co�lorrs� Other (Explain in Rem m Reirr°ks: f6Y /arks) C / Z �'(�i�p. ✓�-7 V /T7J fz f3 e ce_ s,2 e . P f GL'tPcl ci`�Y SOILS Map Unit Name n 7!9 /{ (Series eM Ph ... I 4f 7-14 it — %?,c tier Ogvtcai Z — f?A Dnrinega Cl... _ Feld Observations ... ...... Confirm Mapped Profile Oescriprion: Depth Matrix Color Mottle Colors inchesl Horizon (Mundell Moistl IMUnsell Moist) r Z _ Reducing Conditions Listed on National Hydric Sails List vx Other (Explain in Remarks) / IS,,r /'" Y L13 y Jj',42> 52551 y —� Hydric Soil Indicators: �'j,.l'y(�YcN /G�Yt AE--'�f a7 r� Mottle Texture, Concretions Abundance /Contrast Structure. etc. 99 Sir /� /ORyr, GLi?r2r ccl�Snrr� �,zt I f x% SOILS /%O,,4 .Lfc.PO,c' %t ,9nic:x --Z//`' Ai.xlli C?e Qerk.Ai,6 E) Mep Unit Name (Sense ern Ph ... 1 /L'< p p �Oq/eW TJM °""°�� Drainage C1..s: Feld Observed... Taxonomy (Subgroup): C.nPom Mapped Type? Yea No Profile Oeecnonon: Own Matrix Color M.M. Colors Monde Texture, Concrete.. inched Henson (MU ... 11 Moied (MUnsell Moianl AbundencelConnrast Structure, etc. /r we a rnPP.r. /C V9 C✓2LKLY.0 / c ✓y ✓5�' 3-53 " = Of 3 „2,5 -s /a -/5% Gi.aa-�' /�%a� Hydd. Soil Indicators: His% ... I Concretions _ Hied. Epipedon High Organic Content in Surface Layer in Sandy Soils Sulfidic Odor Organic Streaking in Sandy Soils Aeuic Moisture Regime Usted on Local Hydnc Soil. List Reducing Conditions Ueted on Nod ... I Hydnc Soils List Gieyed or low- Chr.ma Colors Other (Explain in Remarkal Remarks: / r 3 ,2I-I 147 3 '/ � Q� pna-e ��'��"�-e � ,7 Soils Information Thurston County. Washington once a year. In some years Irrigation Is needed for maximum production. Sprinkler irrigation is the best method of applying water. The amount of water applied should be sufficient to wet the root zone but small enough to minimize the leaching of plant nutrients. This map unit is in capability subclass IVs. 33— Everett very gravelly sandy loam, 3 to 15 percent slopes. This very deep, somewhat excessively drained soil is on terraces and outwash plains. It formed in glacial outwash. The native vegetation is mainly conifers. Elevation is 50 to 700 feet. The average annual precipitation is 35 to 45 inches, the average annual air temperature is about 50 degrees F, and the average frost -free period is 150 to 200 days. Typically, the surface layer is dark reddish brown very gravelly sandy loam about 3 inches thick. The subsoil is dark brown and dark yellowish brown extremely gravelly sandy loam and extremely gravelly loamy sand about 17 inches thick. The substratum to a depth of 60 inches or more is olive brown extremely gravelly loamy sand and dark grayish brown extremely gravelly sand. Included in this unit are small areas of Alderwood and Kapowsin soils on till plains, Baldhill soils on terminal moraines, and Indianola and Spanaway soils on outwash plains. Also included are small areas of Everett very gravelly sandy loam that have slopes of 0 to 3 percent or 15 to 30 percent. Included areas make up about 20 percent of the total acreage. Permeability is rapid in the Everett soil. Available water capacity is low. Effective rooting depth is 60 inches or more. Runoff is slow, and the hazard of water erosion is slight. This unit is used as woodland or homesites. Douglas - fir is the main woodland species. Among the trees of limited extent are red alder, western hemlock, western redcedar, and bigleaf maple. On the basis of a 100 -year site curve, the mean site index for Douglas -fir is 13& On the basis of a 50 -year site curve, it is 106. The highest average growth rate of an unmanaged, even - aged stand of Douglas -fir is 142 cubic feet per acre per year at 70 years of age. This soil is suited to year -round logging. Logging roads require suitable surfacing material for year -round use. Rounded pebbles and cobbles for road construction are readily available on this unit. Seedling mortality is the main concern in the production of timber. Droughtiness in the surface layer reduces the seedling survival rate. Reforestation can be accomplished by planting Douglas -fir seedlings. If the stand includes seed trees, natural reforestation by red 35 alder occurs readily in cutover areas. When openings are made in the canopy, invading brushy plants can delay the establishment of planted Douglas -fir seedlings. Common forest understory plants are salat, western brackenfern, cascade Oregon - grape, red huckleberry, and trailing blackberry. This unit is suited to homesites. Cutbanks are not stable and are subject to sloughing. Pebbles and cobbles should be removed, particularly in areas used for lawns. In summer, irrigation is needed for lawn grasses, shrubs, vines, shade trees, and ornamental trees. Mulch, fertilizer, and irrigation are needed to establish lawn grasses and other small- seeded plants. The main limitation affecting septic tank absorption fields is a poor filtering capacity. If the density of housing is moderate or high, community sewage systems are needed to prevent the contamination of water supplies caused by seepage from onsite sewage disposal systems. Slope hinders the installation of septic tank absorption fields. Absorption lines should be installed on the contour. This map unit is in capability subclass IVe. 34— Everett very gravelly sandy loam, 15 to 30 percent slopes. This very deep, somewhat excessively drained soil is on terraces and outwash plains. It formed in glacial outwash. The native vegetation is mainly conifers. Elevation is 50 to 700 feet. The average annual precipitation is 35 to 45 inches, the average annual air temperature is about 50 degrees F, and the average frost -free period is 150 to 200 days. Typically, the surface layer is dark reddish brown very gravelly sandy loam about 3 inches thick. The subsoil is dark brown and dark yellowish brown extremely gravelly sandy loam and extremely gravelly loamy sand about 17 inches thick. The substratum to a depth of 60 inches or more is olive brown extremely gravelly loamy sand and dark grayish brown extremely gravelly sand. Included in this unit are small areas of Alderwood and Kapowsin soils on till plains, Baldhill soils on terminal moraines, and Indianola soils on outwash plains. Also included are small areas of Everett very gravelly sandy loam that have slopes of 3 to 15 percent or 30 to 60 percent. Included areas make up about 25 percent of the total acreage. Permeability is rapid in the Everett soil. Available water capacity is low. Effective rooting depth is 60 inches or more. Runoff is medium, and the hazard of water erosion is moderate. This unit is used as woodland. Douglas -fir is the 136 The solum ranges from 40 to more than 60 inches in thickness. These sails are slightly acid or medium acid throughout. In some areas the content of pebbles is as much as 15 percent. The A horizon has hue of 10YR to SYR, value of 2 or 3 when moist and 3 to 5 when dry, and chrome of 2 or 3 when moist and 2 to 6 when dry. It is silt loam or loam. The B horizon has hue of SYR to IOYR, value of 3 or 4 when moist and 4 to 6 when dry, and chroma of 3 or 4 when moist and 3 to 6 when dry. It is loam or silt loam in the upper part and silt loam or silty clay loam in the lower part. Everett Series The Everett series consists of very deep, somewhat excessively drained soils on glacial terraces, moraines, and terrace escarpments. These soils formed in glacial outwash. Slope is 0 to 50 percent. Elevation is 50 to 700 feet. The average annual precipitation is 35 to 45 inches, the average annual air temperature is about 50 degrees F, and the average frost -free season is 150 to 200 days. These soils are sandy- skeletal, mixed, mesic Andic Xerochrepts. Typical pedon of Everett very gravelly sandy loam, 3 to 15 percent slopes. 6 miles southeast of Olympia; about 1.100 feet east and 2.600 feet north of the southwest corner of sec. 35. T. 18 N., R. 1 W. A -0 to 3 inches; dark reddish brown (5YR 2/2) very gravelly sandy loam, dark brown (10YR 4/3) dry; weak very fine subangular blocky structure: soft, very friable, nonsticky and nonelastic; many fine, medium, and coarse roots; many very fine and fine interstitial pores; 35 percent rounded pebbles; very strongly acid; abrupt smooth boundary. Bw -3 to 12 inches; dark brown (7.5YR 3/4) extremely gravelly sandy loam, brown (10YR 5/3) dry; weak fine subangular blocky structure; soft, very friable, nonsticky and nonelastic many fine, medium, and coarse roots; many very fine interstitial pares; 65 percent rounded pebbles; medium acid; clear smooth boundary. BC -12 to 20 inches: dark yellowish brown (10YR 414) extremely gravelly loamy sand, pale brawn (10YR 6r3) dry; single grained; loose; common fine and medium roots; many very fine interstitial pores; 75 percent rounded pebbles; medium acid; clear smooth boundary. C1 -20 to 28 inches: olive brown (2.5Y 4/4) extremely gravelly loamy sand, grayish brown (2.5Y 5/2) dry; Soil Survey single grained: loose; common fine and medium roots: many very fine interstitial pores; 75 percent rcunded pebbles; medium acid, clear smooth boundary. C2 -28 to 60 inches; dark grayish brown (2.5Y 4/2) extremely gravelly sand, gray (5Y 6/1) dry; single grained; loose; few fine roots, 85 percent rounded pebbles, slightly acid. The solum ranges from 12 to 26 inches in thickness. The content of coarse fragments in the control section ranges from 50 to 80 percent. The soils are very strongly acid to medium acid throughout. The A horizon has hue of 10YR to SYR, value of 2 to 5 when moist, and chrome of 2 or 3 when moist or dry. Some pedons do not have an A horizon. The Bw horizon has hue of 10YR or 7.5YR, value of 3 to 6 when moist and 3 to 5 when dry, and chrome of 2 to 4 when moist or dry, It is very gravelly sandy loam or extremely gravelly sandy loam. The C horizon has hue of 10YR to 5Y, value of 4 to 6 when moist or dry, and chroma of 2 to 4 when moist or dry. It is extremely gravelly sand to extremely loamy sand. Everson Series The Everson series consists of deep, poorly drained soils in depressions on glacial terraces. Drainage has been altered by tiling and open ditches. These soils formed in alluvium or lacustrine deposits and glacial outwash. Slope is 0 to 2 percent. Elevation is 100 to 300 feet. The average annual precipitation is 40 to 55 inches, the average annual air temperature is about 50 degrees F, and the average frost -free season is 150 to 200 days. These soils are clayey over sandy or sandy - skeletal, mixed, nonacid, mesic Typic Humaquepts. Typical pedon of Everson clay loam, 2 miles northwest of Maytown; about 2,300 feet west and 950 feet north of the southeast corner of sec. 32, T. 17 N., R.2 W. Ap -0 to 6 inches; very dark grayish brown (10YR 3/2) clay loam, dark grayish brown (10YR 4/2) dry; strong medium and coarse granular structure; slightly hard, friable, slightly sticky and slightly plastic; many very fine and fine and common medium roots; many very fine and fine pores; strongly acid; abrupt smooth boundary. Bg1 -6 to 9 inches; very dark grayish brown (10YR 3/2) clay loam, grayish brown (10YR 5/2) dry; common fine prominent yellowish red (SYR 5/6) mottles; 74 64 fine sand about 26 inches thick. The substratum to a depth of 60 inches or more is light olive brown loamy sand. Included !n this unit are small areas of Giles, Indianola. Spanaway. and Yelm soils on terraces. Also included are small areas of Nisqually loamy fine sand that have slopes of 0 to 3 percent. Included areas make up about 15 percent of the total acreage. Permeability is moderately rapid in the surface layer of the Nisqually soil and very rapid in the substratum. Available water capacity is moderate. Effective rooting depth is 60 inches or more. Runoff is slow, and the hazard of water erosion is slight. This unit is used mainly for hayland, pasture, or homesites. It is also used as woodland. The main limitation affecting hay and pasture is the moderate available water capacity. Proper grazing practices, weed control, and fertilizer are needed to ensure maximum quality of forage. Periodic mowing helps to maintain uniform growth, discourages selective grazing, and controls weeds. Animal manure can be applied periodically during the growing season. Areas that receive heavy applications should be harrowed at least once a year. In summer, irrigation is needed for maximum production of most forage crops. Sprinkler irrigation is the best method of applying water. Water should be be applied in amounts sufficient to wet the root zone but small enough to minimize the leaching of plant nutrients. Douglas -fir is the main woodland species on this unit. Among the trees of limited extent are red alder, biglea' maple, and western redcedar. On the basis of a 100. year site curve, the mean site index for Douglas -fir is 167, On the basis of a 50 -year site curve, it is 125. The estimated growth rate of an unmanaged, even -aged stand of Douglas -fir is 178 cubic feet per acre per year at 60 years of age. This sail is suited to year -round logging. Unsurfaced roads and skid trails are soft and slippery when wet. Logging roads require suitable surfacing material for year -round use. Rock for road construction is not readily available on this unit. Disturbance of the protective layer of duff can be minimized by the careful use of wheeled and tracked equipment. Seedling establishment and seedling mortality are the main concerns in the production of timber. Reforestation can be accomplished by planting Douglas -fir seedlings. If the stand Includes seed trees, natural reforestation by red alder occurs readily in cutover areas. When openings are made in the canopy, invading brushy plants can delay the establishment of planted Douglas- Soil Survey fir seedlings. Droughtiness in the surface layer reduces the seedling survival rate. This unit is suited to homesites. Cutbanks are not stable and are subject to sloughing. In summer, irrigation is needed for lawn grasses, shrubs, vines, shade trees, and ornamental trees. A plant cover can be established and maintained by fertilizing, seeding, mulching, and shaping of the slopes. The main limitation affecting septic tank absorption fields is a poor filtering capacity. If the density of housing is moderate or high, community sewage systems are needed to prevent the contamination of water supplies caused by seepage from onsite sewage disposal systems. The slope hinders installation of the absorption fields. Absorption lines should be Installed on the contour. This map unit is in capability subclass IVe. 75 —Norma fine sandy loam. This very deep, poorly drained soil is in depressions on till plains. It formed in alluvium. Slope is 0 to 3 percent. The native vegetation is mainly sedges, rushes, and hardwoods. Elevation is 50 to 500 feet. The average annual precipitation is 40 to 55 inches, the average annual air temperature is about 50 degrees F, and the average frost -free period is 150 to 200 days. Typically, the surface layer is very dark grayish brown fine sandy loam about 7 inches thick. The subsoil is dark grayish brown, mottled fine sandy loam about 18 inches thick. The substratum to a depth of 60 inches or more is olive gray. mottled sandy loam. Included in this unit are small areas of Alderwocd and Kapowsin soils on Of plains, Everson soils in depressions, and Cagey and Everett soils on terraces. Also included are small areas of Norma silt loam. Included areas make up about 15 percent of the total acreage. Permeability is moderately rapid in the Norma soil. Available water capacity is high. Effective rooting depth is limited by a seasonal high water table that Is near or above the surface from November to April. Runoff is slow, and the hazard of water erasion is slight. This unit is used for hayland, pasture, or woodland. The main limitations affecting hay and pasture are the seasonal high water table and the pending. Some areas have been partially drained, but adequate drainage systems have not been maintained. Wetness limits the choice of plants and the period of cutting or grazing and increases the risk of winterkill. Grazing should be delayed until the soil has drained sufficiently and is firm enough to withstand trampling by livestock. Proper jeton County. Washington 'hese soils are dystic, mesic Typic Medihemists . ypical pedon of Mukilteo muck, drained, 3 miles ',neast of Olympia', about 600 feet north and 500 feet ;t of the southeast corner of sec. 12. T. 18 N_ R. 2 —0 to 2 inches: dark yellowish brown (10YR 4/4) sapric material; about 20 percent fiber, 10 percent rubbed; about 70 percent fine fibrous roots; extremely acid: abrupt smooth boundary. —2 to 6 inches: dark reddish brown (5YR 2/2) sapric material; about 50 percent fiber, 6 percent rubbed, moderate fine angular blocky structure; friable; many fine roots, very strongly acid; abrupt smooth boundary. .1 -6 to 11 inches; dark reddish brown (5YR 3/2) hemic material; about 80 percent fiber, 20 percent rubbed. weak fine subangular blocky structure; friable) common fine roots; very strongly acid; clear smooth boundary. 2 -11 to 42 inches) dark reddish brown (5YR 12) heroic material, about 65 percent fiber, 20 percent rubbed; massive; friable; few fine roots to a depth of about 24 inches, very strongly acid; clear smooth boundary. 3 -42 to 72 inches; dark reddish brown (5YR 3/2) hemic material: about 60 percent fiber, 24 percent rubbed, massive, friable: very strongly acid. he organic material ranges from 52 to more than inches in thickness. The soils are strongly acid or r strongly acid. The fibers are derived mostly from ges. he surface tier has hue of 5YR or ZSYR, value of 2 . and chroma of 1 or 2. It generally has one or more rs of sapric material that is less than 15 percent r when rubbed. The subsurface tiers are hemic . y have hue of 5YR or 10YR and value and chroma to 4. The content of fiber In these tiers ranges from c 50 percent after rubbing. The bottom tier is similar rlor and fiber content to the subsurface tiers, but it arally has a higher fiber content. vberg Series he Newberg series consists of very deep, well red soils on flood plains. These soils formed in ,ium. Slope is 0 to 3 percent. Elevation is 100 to feet. The average annual precipitation is 45 to 55 es. the average annual air temperature is about 50 Sibs F, and the average frost -free season is 165 to days. 147 These soils are coarse - loamy, mixed, mesic Fluventic Haploxerolls. Typical pedon of Newberg loam, 5 miles southeast of Rochester, about 1,875 feet north and 250 feet east of the southwest corner of sec. 24, T. 15 N., R. 3 W. Ap -0 to 8 inches; very dark grayish brown (10YR 3/2) loam, dark brown (10YR 4/3) dry; weak very fine and fine subangular blocky structure; slightly hard, very friable, nonsticky and nonplastic; many very fine and fine roots; many microinterstitial pares; slightly acid; abrupt smooth boundary. A -8 to 17 inches; dark brown (10YR 3/3) fine sandy loam, brown (10YR 5/3) dry; weak coarse and medium subangular blocky structure; soft, very friable, nonsticky and nonelastic; common very fine roots; common very fine tubular pores and many micro interstitial pores) slightly acid; abrupt smooth boundary, Cl-17 to 42 inches; dark yellowish brown (10YR 3/4) fine sandy loam, light brownish gray (10YR 6 /2) dry; massive; soft, very friable, nonsticky and nonplastic; common very fine roots; common very fine tubular pares; slightly acid; abrupt smooth boundary. C2 -42 to 60 inches; dark yellowish brown (10YR 3/4) fine sandy loam, light brownish gray (10YR 6/2) dry; single grained; loose, very friable, nonsticky and nonplastic; few very fine roots, many very fine interstitial pores; slightly acid. The mollic epipedon is 10 to 15 inches thick. Reaction ranges from slightly acid to medium acid throughout the profile- The control section averages loamy very fine sand or sandy loam and lacks contrasting textures. The upper 10 inches of the A horizon has value of 2 or 3 when moist and 4 or 5 when dry and chroma of 2 or 3. The lower part has hue of 10YR or ZSYR, value of 3 or 4 when moist and 4 to 6 when dry, and chroma of 2 to 4. In some areas very gravelly or sandy substrata are below a depth of 40 inches. Nisqually Series The Nisqually series consists of very deep, somewhat excessively drained soils on terraces. These sails formed in sandy glacial outwash. Slope is 0 to 15 percent. Elevation is 50 to 400 feet. The average annual precipitation is 40 to 55 inches, the average annual air temperature is about 51 degrees F, and the average frost -free season is 150 to 200 days. 148 These soils are sandy, mixed. mesic Pachic Xerumbrepts. Typical pedon of Nlsqually loamy fine sand. 0 to 3 percent slopes. 5 miles south of Olympia; about 700 feet east and 350 feet south of the northwest corner of sea 13. T 17 N., R. 2 W. Ap -0 to 5 inches'. black (5YR 2/1) loamy fine sand, dark gray (10YR 4/1) dry; massive; soft. very friable. nonsticky and nonplastic: many medium and fine roots', very high organic matter content. medium acid: abrupt smooth boundary. Al -5 to 18 Inches', very dark gray (10YR 3/1) loamy fine sand, dark gray (10YR 4/1) dry, massive; soft, very friable, nonsticky and nonplastic: common medium and fine roots; high organic matter content; medium acid', gradual wavy boundary. A2 -18 to 31 inches: very dark grayish brown (10YR 312) loamy fine sand, grayish brown (10YR 5/2) dry', massive '. soft. very friable. nonsticky and nonplastic: common medium and fine roots: medium acid; gradual wavy boundary. C1 -31 to 48 inches: light olive brown (2.5Y 5/4) loamy sand. grayish brown (2.5Y 5/2) dry; massive; soft. very friable. nonsticky and nonplastic; common medium and fine roots', slightly acid; gradual wavy boundary. C2 -48 to 60 inches: light olive brown (2.5Y 5/4) loamy sand, light brownish gray (2.5Y 6/2) dry; single grained: loose: few medium and fine roots; slightly acid, The umbric epipedon is 25 to 38 inches thick. The soils are slightly acid or medium acid throughout. The A horizon has hue of 5YR to 10YR, value of 2 or 3 when moist and 2 to 4 when dry, and chrome of 1 or 2 when moist or dry. The part of this horizon below the surface layer is loamy fine sand or loamy sand. Norma Series _ The Norma series consists of very deep, poorly drained soils in depressions on till plains. These soils formed in old alluvium. Slope is 0 to 3 percent. Elevation is 50 to 500 feet. The average annual precipitation is 40 to 55 inches, the average annual air temperature is 50 degrees F, and the average frost -free season is 150 to 200 days. These soils are coarse - loamy, mixed, nonacid, mesic Mollie Haplaquepts Typical pedon of Norma silt loam, 4 miles southwest of Tumwater, about 650 feet west and 1,000 feet north of the southeast corner of sec. 21. T. 17 N., R. 2 W. Soil Survey Ap -0 to 8 inches, very dark gray (10YR 3/1) silt loam, dark brown (10YR 4/3) dry; moderate fine granular structure, slightly hard friable, slightly sticky and slightly plastic, many fine. medium, and coarse roots, many very fine tubular pores', medium acid; abrupt smooth boundary. Bw -8 to 30 inches: grayish brown (2.5Y 5/2) sandy loam, light brownish gray (2.5Y 6/2) dry; common medium prominent reddish yellow (7 5YR 6/6) mottles; weak medium subangular blocky structure; soft, very friable, nonsticky and nonplastic, few fine roots', many very fine tubular pores; medium acid; clear smooth boundary. Cg -30 to 60 inches: olive gray (5Y 512) sandy loam, light gray (5Y 7/2) dry, common medium prominent red (2. SYR 5 /8) mottles: massive; soft, very friable, nonsticky and nonplastic: few fine roots; many very fine tubular pores; slightly acid. The control section is 0 to 20 percent coarse fragments, 5 to 10 percent clay, and more than 15 percent fine sand or coarser sand The A horizon has value of 2 or 3 when moist and 4 or 5 when dry and chrome of 1 to 3 when moist or dry. It ranges from strongly acid to slightly acid. The B horizon has hue of 10YR to 5Y, value of 4 or 5 when moist and 5 or 6 when dry, and chroma of 1 or 2 when moist or dry. It is fine sandy loam, loam, sandy loam, or silt loam. It is medium acid or slightly acid. The C horizon has hue of 2.5Y or 5Y. It is sandy loam or loamy sand. It is medium acid or slightly acid. Olympic Series The Olympic series consists of very deep, well drained sails on uplands. These soils formed in material weathered from basalt. Slope is 5 to 40 percent. Elevation is 200 to 1,600 feet. The average annual precipitation is 50 to 60 inches, the average annual air temperature is about 51 degrees F, and the average frost -free season is 150 to 200 days. These soils are clayey, mixed, mesic Xeric Haplohumults. Typical pedon of Olympic silt loam, 20 to 40 percent slopes, 4 miles west of Littlerock; about 1,000 feet west and 2,400 feet south of the northeast corner of sec. 6, T. 16 N., R. 3 W. A1-0 to 6 inches; dark brown (7.5YR 3/2) silt loam, dark brown (10YR 4/3) dry; moderate fine and medium granular structure; slightly hard, friable, slightly sticky and plastic; many fine and medium Thurston County, Washington Included areas make up about 10 percent of the total acreage. Permeability is moderately rapid In the Spans soil. Available water capacity is moderate, Effective rooting depth is 20 to 40 inches. A seasonal high water table is at a depth of about 12 to 36 inches from November to April. Runoff is slow, and the hazard of water erosion is slight. Most areas are used as hayland and pasture. This unit is suited to hay and pasture. The main limitations are the seasonal high water table and the moderate available water capacity. Proper stocking rates, pasture rotation, and restricted grazing during wet periods help to keep the pasture in good condition and protect the soil from erosion. Rotation grazing helps to maintain the quality of forage. Periodic mowing helps to maintain uniform growth, discourages selective grazing, and controls weeds. In most years irrigation is needed for maximum production. Sprinkler irrigation is the best method of applying water. The amount of water applied should be sufficient to wet the root zone but small enough to minimize the leaching of plant nutrients. A few areas are used as woodland. On the basis of a 100 -year site curve, the estimated site index for Douglas -fir is 144. On the basis of a 50 -year site curve, t is 110. The estimated growth rate of an unmanaged, oven -aged stand of Douglas -fir is 150 cubic feet per acre per year at 60 years of age. The main limitation affecting the harvesting of timber s the muddiness caused by seasonal wetness. Use of vheeled and tracked equipment when the soil is wet esults in ruts and soil compaction. Unsurfaced roads and skid trails are soft and can be Impassable when met. Logging roads require suitable surfacing material or year -round use Rounded pebbles and cobbles for cad construction are readily available on this unit. The seasonal high water table limits the use of equipment to fry periods. Disturbance of the protective layer of duff :an be minimized by the careful use of wheeled and racked equipment. Seedling establishment is the main concern in the )reduction of timber. Reforestation can be rocomplished by planting Douglas -fir seedlings. If the land includes seed trees, natural reforestation by red dder occurs periodically in cutover areas. The seasonal igh water table inhibits root respiration and thus results 1 some seedling mortality. When openings are made in ie canopy, invading brushy plants can prevent the stablishment of planted Douglas -fir seedlings. Common forest understory plants are cascade Iregon- grape, salal, vine maple, western brackenfern, nd Oregon white oak. m This map unit is in capability subclass Illw. 110 — Spanaway gravelly sandy loam, 0 to 3 percent slopes. This very deep, somewhat excessively drained soil is on terraces. It formed in glacial outwash and volcanic ash. The native vegetation is mainly grasses, ferns, and a few conifers. Elevation is 100 to 400 feet. The average annual precipitation is 45 to 55 inches, the average annual air temperature is about 51 degrees F, and the average frost -free period is 150 to 200 days. Typically, the surface layer is black gravelly sandy loam about 15 inches thick. The subsoil is dark yellowish brown very gravelly loam about 5 inches thick. The substratum to a depth of 60 inches or more is dark yellowish brown extremely gravelly sand. Included in this unit are small areas of Alderwood soils on till plains; Everett, Indianola, and Nisqually soils on outwash terraces; and Spans soils in depressions. Also included are small areas of Spanaway soils that have a stony sandy loam surface layer and small areas of Spanaway gravelly sandy loam that have slopes of 3 to 15 percent. Included areas make up about 20 percent of the total acreage. Permeability is moderately rapid in the subsoil of the Spanaway soil and very rapid in the substratum. Available water capacity is low. Effective rooting depth is 60 inches or more. Runoff is slow, and the hazard of water erosion is slight. This unit is used mainly as hayland, pasture, or cropland, as a site for homes, or as a source of gravel. It is also used as woodland. The main limitation affecting hay and pasture is the low available water capacity. Proper grazing practices, weed control, and fertilizer are needed to ensure maximum quality of forage. Rotation grazing helps to maintain the quality of forage. Periodic mowing helps to maintain uniform growth, discourages selective grazing, and controls weeds. Animal manure can be applied periodically during the growing season. Areas that receive heavy applications should be harrowed at least once a year In summer, irrigation is needed for maximum production of most forage crops. Sprinkler irrigation is the best method of applying water. The amount of water applied should be sufficient to wet the root zone but small enough to minimize the leaching of plant nutrients. This unit is suited to crops. Wheat, oats, strawberries, raspberries, blackberries, and sweet corn are commonly grown. The main limitation is the low available water capacity. In summer, irrigation is needed for maximum production of most crops. 90 Sprinklers can be used, but a slow application rate is needed to minimize runoff. The amount of water applied should be sufficient to wet the root zone but small enough to minimize the leaching of plant nutrients. The application rate should be adjusted to the available water capacity, the water intake rate, and the needs of the crop. Animal manure can be applied periodically during the growing season. Areas that receive heavy applications should be harrowed at least once a year. This unit is well suited to homesites. Pebbles and cobbles should be removed, particularly in areas used for lawns. In summer, irrigation is needed for lawn grasses, shrubs, vines, shade trees, and ornamental trees. Mulch, fertilizer, and irrigation are needed to establish lawn grasses and other small- seeded plants. The main limitation affecting septic tank absorption fields is a poor filtering capacity. If the density of housing is moderate or high, community sewage systems are needed to prevent the contamination of water supplies caused by seepage from onsite sewage disposal systems. Cutbanks are not stable and are subject to sloughing. Douglas -fir is the main woodland species on this unit. Among the trees of limited extent are Oregon white oak, lodgepole pine, and red alder. Douglas -fir and Scotch pine are grown on Christmas tree plantations. On the basis of a 100 -year site curve, the mean site index for Douglas -fir is 140. On the basis of a 50 -year site curve, it is 108. The highest average growth rate of an unmanaged, even -aged stand of Douglas -fir is 145 cubic feet per acre per year at 65 years of age. This soil is suited to year -round logging. Unsurfaced roads and skid trails are slippery when wet. Logging roads require suitable surfacing material for year -round use. Rounded pebbles and cobbles for road construction are readily available on this unit. Disturbance of the protective layer of duff can be minimized by the careful use of wheeled and tracked equipment. Seedling establishment and seedling mortality are the main concerns in the production of timber. Reforestation can be accomplished by planting Douglas -fir seedlings. If the stand includes seed trees, natural reforestation by Douglas -fir, Oregon white oak, and lodgepole pine occurs periodically in cutover areas. Droughtiness in the surface layer reduces the seedling sur ✓ival rate. When openings are made in the canopy, invading brushy plants can delay the establishment of planted Douglas - fir seedlings. Common forest understory plants are cascade Oregon- grape, salal, western brackenfern, western swordfern, Indian plum, and Scotch- broom. Soil Survey This map unit is in capability subclass IVs. 111 — Spanaway gravelly sandy loam, 3 to 15 percent slopes. This very deep, somewhat excessivel drained soil is on terraces. It formed in glacial outwast and volcanic ash. The native vegetation is mainly grasses, ferns, and a few conifers. Elevation is 100 to 400 feet. The average annual precipitation is 45 to 55 inches, the average annual air temperature is about 51 degrees F, and the average frost -free period is 150 to 200 days. Typically, the surface layer is black gravelly sandy loam about 15 inches thick. The subsoil is dark yellowish brown very gravelly sandy loam about 5 inches thick. The substratum to a depth of 60 inches o more is dark yellowish brown extremely gravelly sand. Included in this unit are small areas of Alderwood soils on till plains and Everett, Indianola, and Nisqually soils on terraces. Also included are small areas of Spanaway soils that have a stony sandy loam surface layer and small areas of Spanaway gravelly sandy loan that have slopes of 0 to 3 percent. Included areas make up about 20 percent of the total acreage. Permeability is moderately rapid in the subsoil of the Spanaway soil and very rapid in the substratum. Available water capacity is low. Effective rooting depth is 60 inches or more. Runoff is slow, and the hazard of water erosion is slight. This unit is used mainly as hayland or pasture, as a site for homes, or as a source of gravel, It is also used as woodland. The main limitation affecting hay and pasture is the low available water capacity during the growing season. Proper grazing practices, weed control, and fertilizer and needed to ensure maximum quality of forage. Rotation grazing helps to maintain the quality of forage. Periodic mowing helps to maintain uniform growth, discourages selective grazing, and controls weeds. Animal manure can be applied periodically during the growing season. Areas that receive heavy applications should be harrowed at least once a year. In summer, irrigation is needed for maximum production of most forage crops. Sprinkler irrigation is the best method of applying water. The amount of water applied should be sufficient to wet the root zone but small enough to minimize the leaching of plant nutrients. This unit is suited to homesites. The main limitation is the slope. Cutbanks are not stable and are subject to sloughing. A plant cover can be established and maintained through proper fertilizing, seeding, mulching, and shaping of the slopes. Pebbles and cobbles should be removed, particularly in areas used for lawns. In 158 Spanaway Series The Spanaway series consists of very deep, somewhat excessively drained soils on terraces. These soils formed in glacial outwash and volcanic ash. Slope is 0 to 15 percent. Elevation is 100 to 400 feet. The average annual precipitation Is 40 to 55 inches, the average annual air temperature is about 51 degrees F, and the average frost -free season is 150 to 200 days. These soils are sandy- skeletal, mixed, mesic Andre Xerumbrepts. Typical pedon of Spanaway gravelly sandy loam, 0 to 3 percent slopes, 4 miles southeast of Lacey; about 250 feet west and 400 feet south of the northeast corner of sec. 25, T, 36 N.. R. 1 W. A -0 to 15 inches'. black (10YR 2 /1) gravelly sandy loam, very dark grayish brown (10YR 3/2) dry; weak fine granular structure: loose, very friable, nonsticky and nonplastic', many fine, medium. and coarse roots, 25 percent pebbles; strongly acid; clear smooth boundary. Bw -15 to 20 inches; dark yellowish brown (10YR 3/4) very gravelly sandy loam, light olive brawn (2.5Y 5/4) dry. weak fine subangular blocky structure; loose, very friable, nonsticky and nonplastic; many fine. medium, and coarse roots; 55 percent pebbles, medium acid; clear smooth boundary. C -20 to 60 inches) dark yellowish brown 1 4/4) extremely gravelly sand, yellowish brown (10YR 5 /4) dry; single grained; loose; few fine roots; 80 percent pebbles, 10 percent cobbles; slightly acid. The thickness of the sclum ranges from 15 to 25 inches. The content of coarse fragments in the control section ranges from 50 to 85 percent. The weighted average texture of this section is very gravelly sand or extremely gravelly sand. The umbric epipedon is 10 to 20 inches thick. The A horizon has hue of 1 CYR or 7.5YR, value of 3 or 4 when dry, and chroma of 1 or 2 when moist or dry. It is medium acid or strongly acid. The Bw horizon has value of 4 or 5 when dry and 3 or 4 when moist. It is very gravelly sandy loam, very gravelly loam, or extremely gravelly sandy loam. The C horizon has hue of 10YR or 2.5Y, value of 5 or 6 when dry and 4 or 5 when moist. and chroma of 3 or 4 when dry or moist. It is extremely gravelly sand or extremely gravelly loamy sand and is slightly acid or neutral. Sultan Series The Sultan series consists of very deep, moderately Soil Survey well drained soils on flood plains. These soils formed in alluvium. Slope is 0 to 3 percent. Elevation is 20 to 75 feet. The average annual precipitation is 40 to 50 inches. the average annual air temperature is about 50 degrees F, and the average frost free season is 150 to 200 days. These soils are fine -silty, mixed. nonacid, mesic Aquic Xerofluvents. Typical beech of Sultan silt loam, 7 miles east of Lacey; about 1,000 feet east and 1,975 feet north of the southwest corner of sec. 16, T. 18 N., R. 1 E. Ap -0 to 7 inches, dark yellowish brown (10YR 3/4) silt loam, brown (10YR 5/3) dry: moderate fine and medium granular structure; slightly hard, very friable, slightly sticky and slightly plastic; many fine, medium. and coarse roots; many very fine and fine tubular pores: slightly acid; abrupt smooth boundary. BA -7 to 20 inches; dark yellowish brown (10YR 4/4) silt loam, brown (10YR 5/3) dry; moderate fine and medium subangular blocky structure: slightly hard, very friable, slightly sticky and slightly plastic; many very fine, fine, and medium roots; many very fine and fine tubular pores; slightly acid; clear wavy boundary. Bwl -20 to 25 inches; dark brown (10YR 3/3) silt loam, grayish brown (2.5Y 5/2) dry; common fine prominent red (2.5YR 5/8) mottles; moderate fine and medium subangular blocky structure; slightly hard, very friable, slightly sticky and slightly plastic; common fine and medium roots; common very fine and fine tubular pares; slightly acid; gradual wavy boundary. Sw2 -25 to 45 inches; dark brown (10YR 4/3) silt loam, light brownish gray (10YR 6/2) dry; common medium prominent red (2.5YR 5/8) mottles; moderate medium and coarse subangular blocky structure; slightly hard, very friable, slightly sticky and slightly plastic; few very fine and fine roots; few very fine and fine tubular pores; slightly acid; gradual wavy boundary. C -45 to 60 inches; grayish brown (10YR 5/2) sill loam, light gray (1CYR 7/2) dry; common medium prominent dark brown (7.5YR 4/4) mottles; massive; slightly hard, very friable, slightly sticky and slightly plastic; slightly acid. The soils are slightly acid or neutral in the control section and range from slightly acid to strongly acid below a depth of 40 inches. Mottles that have chroma of 3 or more are at a depth of more than 20 inches. Aa t�. §;£, ` �4'¢ Ea F 6 "a: I l � D � � 1 I 3E— e `s re� 3? .s i I rl I I -- mil I Y LM HINNS SR --Rl0- -ll Ir L� ' A A N O °a a z A z p_ a a. 6 - r