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Home My WebLink AboutJEFFERSON COMMONS PUD - PRELIMINARY - 50-95 - SUBMITTAL DOCUMENTS - ROUND 1 - WETLANDS DOCUMENTSSOILS Map Unit Name �— (Series and Phase): Drainage Class: Real Observations Taxonomy (Subgroup): Confirm Mapped Typs7 Yes No Profile Description: Depth Matrix Color Mottle Colon Mottle Texture. Concrsmns.. incheys� -Horizon (Munssell Meistl (Munsell Moist) Abundenee/Contrest Structure, etc. T— Hydric Soil Indicators: _ Histosol _ Conorsticno Kola EPipedon High Organic Content In Surface Layer In Sandy Soils Sulfldio Odor _ Organic. Streaking in Sandy Solis Aquic Moisture Regime _ Listed an Wool Hydric Sells List _ Reducing Conditions Listed on Nadonel Hydria Soils List _ Gleyed or Low -Chrome Colon Other (Explain in Remarks) — Remarks: .,�_Dw /S" �A iw+�'•o✓�>.� �S�C�',''%�r-C!. ce) WETLAND DETERMINATION' Hydrophytic Vegetation Present? GCw--'-'3Ne (Circle) (Circle) Wetland Hydrology Present? Yes o Hydrie Soils Present) Yee o Is this Sampling Point Within a Wed and? Yes QED Remarks: / /A p41,4—K..,-GQ �%%.L�/ "ri/`e `JIGt {%i:; a� :Y•... a r•�,..: i++..� Ci DATA FORM ROUTINE WETLAND DETERMINATION 11987 COE Wetlands Delineation Manual) ProiecVSite: sari /�Hs a��.�%. ,� l,�ari.fo Date: Applicant/Owner: X7 -' County: ' Investigator: State: en r.f,4� Do Normal Circumstances exist on the site? Yes Community ID: f Is the site significantly disturbed (Atypical Situation)? Y No Transact ID: Is the area a potential Problem Area? as Plat ID: (If needed, explain an reverse.) VEGETATION Dorninant Plant Species / Stratum Indicator Dominant Plant Species Stratum Indieatoor 1 • CSC, / 8} y, S2. 4. 7AAA /y t rr •r, O•rIJC:J. N /p , 3. S. 13. e- 14. 7. 15. e. 1e. Percent of Dominant Species that are 08L, FACW or FAC G Al /�°I � q /� (excluding FAC-). n . �'%�.+ e'T111 arr w-J¢ /O,t� 4/ %�p ' Remarks. /%a/iy; 5.� [� �JcY;�C�.:llJyf 9�rP �w •100� /lt. �v*J"(.wd7 c �«o rry J f / ^otie�{i4t r /w .Lr.m 6r 74 G•!�lafr �,�r,•.-/'fs�Y. / t /�'C~o� ,,ur;�Jaf".7.+rC HYDROLOGY _ Recorded Data (Describe in Remarkel: _ Stream. Lake. or rods Gauge _ Aenal Photographs C •her No Recorcert Data Available Field Observations: Depth of Surface Water: Depth to Free Water in Pit: Depth to Saturated Soil: Remark.: ' /D // /mod/C .l ✓'a+'iin�fJ✓Y Wetland Hydrology Indicators: Primary Indicators: yam_ _ Inundated —saturated In Upper 12 Inches _ Water Marks _ Drift Lines _ Sediment Deposits Drainage Patterns in Wetlands SsccrZy Indicators (2 or more required): _ Oxidized Root Channels in Upper 12 Inches _ Water -Stained Leaves _ Local Soil Survey Oats _ FAC-Neutral Test Other (Explain in Remarks) n ✓t" it SOILS Map Unit Name ISeries and Phase): Drainage Class: Raid Observations Taxonomy (Subgroup): Confirm Mapped Type? Yes No Profile Description: /0 yrt' w YR Depth Matrix Color Motds Colon Mottle Texture, Concretions,. (inches) on on (Munsell Moist) (Munsell Moist) Abundanee/Contrast Structure. etc. 3 a 3/y Iw.�u sT .fi �t Hydric Soil Indicators: _ Hiatosol Concretions _ Histic Epipedon _ High Organic Content in Surface Layer in Sandy Soils _ Sullidio Odor _ Organic Streaking In Sandy Soils Aquia Moisture Regime Usted on Load Hydric Soil@ Llst Reducing Conditions I laud on National Hydria Soils List Glayed or Low-Chroms Colors WWWn in Remarks) Remarks:;'`] C.NIv�^% Hro7t/s WETLAND DETERMINATION' Hydrophydo Vegetation Present? es No (Circle) (Circle) Welland Hydrology Presents' No Hydric Soils Present? M No Is this Sampling Point Within a Wedendl 60 No Remarks: 7415 S� 'S(° All- nC ,-fir /{-,,j,a,� /xt .dy o. /-P.t.n v�w�bde-�d� ur�, eh i'S' �n '�,! /ra.�✓/ sd'i' k rc%.f� SCJ%�S. DATA FORM ROUTINE WETLAND DETERMINATION (1987 COE Wetlands Delineation Manual) Project/Site: _ o Applicant/Owner: Investigator: Date: S/3/9S County: .,,'ww State: 4 / .u414 Do Normal Circumstances exist on the site? as Community ID: Is the site significantly disturbed (Atypical Situatio Yes (G) Transact ID: Is the area a potential Problem Area? Yes (5) Plot ID: (If needed, explain on reverse.) 0c /7.Sater'c S'� is Gor .cj S/�wsTtsfef / .2ihacirvc, w�;c"1 <aG 6,'T yad%�Jufn..c� xrirf -✓ /`�°"'< c%a VEGETATION .,_,�,,^, _. / o 4 Dominant Plant Species Stratum 'ce 'r' 1.4�'.o7a/rw. �dr-r;oO�V b�SA 2. Act A /A/ 3. %ate a L e.-. xC /A 7. e. Dominent Plant Species Stratum Indicator a. 10. il. 12. 13. 14. 15. 16. IIPercent of Dominant Species that are OBL. FACW at FAC S/o<<t_it r (excluding FAC-1. Gr? ,.;re A.?% e% 7te rt/fir cr,'w Remarks: %7�Q Wt S/P�^ �$ i,(/6ilS t«- ��yu��lw. f�µ.t) �'L ti tiW �w-v,Yy f Pa s{aL 'A13 �w 'raavf� r/,vci-r v44 7, -ram. o(/ok.� rry a HYDROLOGY _ Recorded Data (Describe In Remarks), Stream. Lake, or Tide Gauge Aenal Photographs C- er No Recorcr4 Data Available Field Observations: Depth of Surface Water: _(in.) Depth to Free Water in Pit: O On.) Depth to Saturated Soil: (in.) ,rr. Wedend Hydrology Indicatorst Primary Inds ors: atsd // aturstod in Upper 12 Inches Water Marks Drift Lines C _ Sediment Deposits rainsge Patterns in Wetlands Secondary Indicators 42 or more required): _ Oxidized Root Channels in Upper 12 Inches _ Water -Stained Leaves _ Local Sod Survey Date _ FAC-Neutral Test Other (Explain in Remarks) Remarks: �8 ) dominated by upland plants exhibited this same matrix color.) However, abundant and relatively strong mottles (10YR 3/4) were present at the sample point at a depth of 6-10 inches. Indications of wetland hydrology at the sample point included: 1) inundation, 2) soil saturation to a depth of 12 inches), and 3) drainage patterns through the grass -lined channel. Small areas exhibiting increased amounts of Baltic rush and / or sedges are occasionally evident in the project area proper, however they do not exhibit evidence of hydric soils or wetland hydrology as a result of check hole observations. In addition to the reasoning presented above regarding sample point 2, these areas appear to be slightly lower topographically than the surrounding pasture grass dominated community and likely benefit from snow melt or other precipitation conditions. I trust this letter will meet your project needs and those of your client. Please call if you have any questions regarding the wetland survey completed for this project site. Sincerely, CCIEIDAIB (CIPt= AMO®CCHAMCO, INC. Steven R. Viert Principal (CILIIDAM CCIA2TI M ASOOMAMEM, INC. Page 4 Gefroh Hattman Jurisdictional wetlands occur within the project area as a variably wide band of sedges and other minor associated wetland species growing in saturated soil conditions along the length of the course of Plum Creek. This band of sedges grades into uplands across a moderately sized transition zone as the channel bank increases slightly in elevation to the north and south. A sample point (No. 1) was placed within this area of wetland and a second point (No. 2) was placed immediately upslope and above the transition zone. As indicated above, upland conditions to the north and south of the area of wetland are typified by sample point No. 2. The vegetation at this sample point is dominated by many of the upland species of improved pasture grasses and / or weeds noted above including smooth brome, Kentucky bluegrass, and dandelion with minor amounts of the dominant wetland sedges. Along the border of the wetland, the relative cover percentage of smooth brome noticeably drops to zero. Soil matrix colors in the upper 15 inches of the soil profile are 10YR 3/2. The darker colors also appear to be common to the uplands throughout the surrounding area, regardless of vegetation present, and are not considered to be indicative of hydric conditions. No mottles or gleying was observed to a depth of 15 inches. Furthermore no wetland hydrology indicators were found at the sample point. Sample point No. 2, located 8-10 feet north of the water level of the creek, was not inundated nor was the profile saturated in the upper 12 inches. No free water was observed in the sample pit to a depth of 15 inches. Sample point No 1. was selected to represent wetland transition zone conditions which exist proximal to the wetland boundary (a sample point within the center of the wetland would have offered little utility owing to the obvious hydraulic conditions present - stream flow). This sample point is dominated by herbaceous wetland species'which comprise.82 % of the relative cover (98 percent total cover by vegetation). The dominant wetland species at the sample point is Carex lepta/ea (or very similar species) (75 % total cover) which is classed as an OBL wetland plant. Baltic rush (Juncus balticus) was also noted as a significant species in the wetland but at lower cover levels and not within the sample plot. Carex nebrasensis (OBL) was observed at 4 % total cover within the sample plot as was Plantago major (FAC) at 1 % cover. Several additional wetland species were noted external to the sample point, however, these were not observed to be dominant species. Furthermore, no observations of the protected species Spiranthes diluvialis, occurred during the site investigation. Soil matrix colors are 10YR 3/2 to a depth of 10 inches, which is believed to be a common expression of the site regardless of wetland or upland conditions. (Several check holes dug upslope in areas Positive identification was not possible owing to a lack of suitable seedhead development. CCILIDAM CCA0ffictDt CH&TIE6, INC. Page 3 Gefroh Hattman included the presence of a histic epipedon, mottling, gleying, and high organic matter content and/or organic matter streaking in the surface layers of sandy soils. Potential wetland hydrologic indicators included topographic position, presence of standing water and/or saturated soil profile conditions, drainage patterns, and oxidized root channels in the upper 12 inches of the soil profile. A formal field data sheet was completed for each sampling point and these are included at the rear of this document. In conjunction with formal sampling sites, numerous "check holes" were dug to further aid in making wetland/upland boundary determinations. Check holes provided additional soil and hydrologic information useful for refining boundaries indicated by surface vegetation patterns extant about wetland / upland transition zones. Such information was also used to better characterize wetland and upland conditions as a whole at the project site. Formal sample site data sheets were not completed for check holes. Following the analysis of site characteristics, the wetland / upland boundary was marked with pink flagging tied to vegetation or 'imprinted" into the ground surface (where heavy grazing had occurred). Furthermore, a combination of pink and fluorescent green flagging was tied to vegetation to mark the location of the two sample sites. It is expected that these locations will be formally recorded through land surveying techniques provided by Gefroh Hattman. The results of these field analyses are summarized in the following section. Results Overall the project area is representative of an improved pasture, the eastern two-thirds of which have been allowed to go ungrazed for several years, while the western one-third is still very actively grazed by horses. Evidence corroborating this land use is readily apparent given the species composition of the vast majority of the project area. The dominant species noted and their relative abundance are presented below: Common Name Rel. Abund. Scientific Nomenclature Smooth Brome Very Common Bromus inermis Kentucky Blue Grass Very Common Poa pratensis Crested Wheatgrass Very Common Agropyron cristata Orchard Grass Common Dactylis glomerata Dandelion Common Taraxacum o(ficina/e Salsify Common Tragopogon dubius Alfalfa Uncommon Medicago sativa Thistle Uncommon Cirsium sp. Introduced Pasture Grass Introduced Pasture Grass Introduced Pasture Grass Introduced Pasture Grass Weed Introduced Forb Introduced Forb Weed (CIMAt@ (CIMIK A006CHAMM, INC. Page 2 Gefroh Hallman ASSOCIATES, 916 Willshire Ave. • Fort Collins, Colorado 80521 • (303) 493-4394 Mr. Ric Hattman Gefroh Hattman 145 W. Swallow Rd Fort Collins, Colorado 80525 Dear Mr. Hattman: June 3, 1995 At your request, Cedar Creek Associates, Inc. completed a Corps of Engineers (COE) jurisdictional wetland survey of a parcel of land located internal to the northwest corner of Taft Hill and Elizabeth Streets in Larimer County in the municipality of Fort Collins, Colorado. The project area consists of approximately 17.5 acres of land extending from Elizabeth Street northward for about two city blocks (just past Orchard PI.). Bisecting the northern 1/3 of the property is the grass lined headwater channel of Plum Creek. This survey was conducted to fulfill the requirements of Section 404 of the Clean Water Act regarding the delineation of wetlands prior to potential development activities. Study Methodology Wetland mapping and delineation work was completed using the methods and techniques specified for "routine on -site delineations" in the publication Corps of Engineers Wetlands Delineation Manual (1987). Prior to field work, project mapping was reviewed to familiarize field personnel with the project site. Furthermore, a cursory examination of the property was made prior to field mapping to provide background information on any influencing circumstances as well as to allow verification of property boundaries and access points through the project acreage. Following reconnaissance work, normal mapping was initiated. To properly identify and delineate wetland / upland boundaries, preliminary sample points along and within suspected boundaries (based on a cursory examination of vegetation) were selected. At each preliminary sample point, percent cover and composition of dominant plant species was estimated. Species were classed as OBL (obligate wetland species), FACW (facultative wetland species), FAC (facultative species), FACU (facultative upland species) or UPL (upland species). Given the uniformity of observable vegetation and small size of the wetland, only two sample points were deemed necessary to represent the overall wetland / upland boundary. -At these two sample points, the cover and composition of vegetation were recorded as noted above, Furthermore, soil and hydrologic data were also collected to verify the presence or absence of wetlands at each sampling point. Wetland soil indicators potentially VEIIDAM CC1B21P1I',1[S A==APTIEO, INC. Page 1 Gefroh Heitman