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HomeMy WebLinkAbout10-19-1998 Allison Phase I Minor Subdivision Analysis Report from Adjacent Landowner ALLISON PHASE I MINOR SUBDIVISION PRELIMINARY PLAT APPLICATION # P-9845 APPLICATION ANALYSIS REPORT PRESENTED TO THE CITY COUNTY PLANNING BOARD BY DAVID R. HEILIG Adjacent Landowner Oct. 6, 1998 Introduction The following report is compiled through my efforts as an adjacent landowner and potential impacted property owner. The intention in developing this report is to enhance the knowledge base of the Board and governing commission when considering this application for minor subdivision. This report contains an analysis and critique of the preliminary plat application #P-9845 prepared for Bon Ton Inc. Bozeman, MT by Morrison-Mairerle, Inc. The remarks relate to the content of the report in relation to resource and physical conditions existing and potential on-site and off-site impacts resulting from the proposed action. Many of the negative impacts could be avoided if alternatives for the entire subdivision were considered. Analysis and Critique of Preliminary Plan Application: As prepared by Morison-Maierle, Inc. for Bon Ton Inc., Bozeman, MT Soils Information: From an on-site review of the site, the soil indicated in the preliminary application is erroneous. The report indicates that the site soil is Blackmore silt loam(350B, Appendix Map 1). However, the actual historical soil on this site is described as Blossberg-Bonebasin Loam complex (542A, Appendix Map 1). The Blackmore is an upland loam soil while Blossberg-Bonebasin loam is a hydric complex with sever limitations for shallow excavations, dwellings, small commercial buildings, roads, streets, lawns, and landscaping from a high water table, cutbanks and caving, wetness, and frost action. The current landscape where the proposed project is planned has been created by filling over the wetland soils Blossberg-Bonebasin loam's since about 1990. The site is artificial and neither soil Blackmore or Blossberg-Bonebasin loam's and their respective data are reflective of the current landscape condition and building hazards. Tremendous hazards to building foundations, streets and roads due to instability are highly probable due the underlying wet soils Blossberg -Bonebasin loam's. See Appendix Maps 2 and 3. Water Table Analysis: Due to the fact that the site borings in the report are south a considerable distance and on higher terrain than the proposed subdivision there is no doubt that the water table where these borings were taken would be 6 to 8.2 feet. These borings are irrelevant to the Allison site due to the fact that the fill material in the Allison,subdivision overlays hydric soils and that the water table surfaces immediately adjacent to this site. These borings are therefore not descriptive of this subdivision site and could not be used to determine nor describe potential impacts either on-site and off-site that may occur due to a high water table. These data are not transferable to the site 1 since the preliminary application is evidently in error by stating in the report that "the groundwater sloped downward towards the north". However based on an on-site inspection of the proposed Allison subdivision site, the historical landscape slopes down to the north and the surface of the ground water slopes to intersect the ground surface adjacent to the north side of the site. This physical condition is evidenced by the water surfacing and flowing immediately north. If the groundwater actually sloped downward to the north as stated in the application report of the project,there would not be any evidence of springs(groundwater emergence) adjacent to the project site! No analysis is prodded in this application that describes the hydrological conditions both on-site and off-site. To fully appreciate the current water table situation and be able to predict potential impacts on the water table from this proposed site development, relevant data and analysis are required and need to be presented in this preliminary plat application. See also Figure 1 in the Appendix which illustrates the current landscape and a profile of the water table as of September 26, 1998 (one of the driest periods of the year) Missing or Incomplete Sections of the Preliminary Plat Application The preliminary plat application does not provide all information as required, including a pre- application plan. Specifically, the application is lacking the following information or discussion as required and described in Chapter 16.08 of the Bozeman Area Subdivision regulations. 1. Topographic features are not displayed on a current Geological Survey Topographic Map that provides information for required items indicated in 16.08.020 of the Subdivision Regulations. Specifically items described and associated with the adjacent subdivisions and tracts; 2. No acknowledgement of the existence of the above ground power line easement offset for lots 2,3,&4; 3. The Preliminary Plan Map's legend is in error; i.e. symbols for wetlands, &floodplain are not named but the symbols are indicated on the map to be monument symbols; 4. There are no indications of noxious weeds or their location when, in fact the site is covered with state noxious weeds. Specifically, Canadian thistle is on the site and the application has no indication of how they are being controlled or planned to be controlled in a Noxious Weed Mgmt and Revegetation Plan; 5. Utilities for the proposed site are not indicated in the plan nor plat map and especially those sub-surface utilities(sewer,water and underground electrical service)that would potentially affect water table levels and directional flow. 2 6. There are no explanations or plans for the proposed "Improved Drainage Pond" located immediately adjacent to the existing wetland. This is required in part C.I of section 16.08.020 of the subdivision regulations. 7. The plat map associated with this application does not describe the location of all existing structures that are within one hundred (100) feet of the proposed subdivision as required by section 16.08.020 A.3 of the subdivision regulations. Conclusions: The current preliminary plat application and pre-application plan is inadequate and needs major additions and revisions to be in compliance with the Bozeman Area Subdivision Regulations. The environmental evaluation including probable impacts is inadequate for this particular subdivision as prescribed in section 16.12.030 C and 16.18.020 B. of the subdivision regulations and which is further described in Section 76-3-608 M.C.A. Additional information or major revision is needed in the application that addresses the soils, water table, utility easements, improved drainage pond as well as information related to noxious weed control and public safety (traffic control) on Arnold Street from increased traffic flow fi-om this proposed subdivision and the potential impacts to adjacent landowners. Therefore, the current preliminary plat application does not meet the requirements of the Bozeman Area Subdivision Regulations prescribed by subdivision regulation 16.10.050 parts C 1 and D, the development standards of the Bozeman Area Master Plan, and the Montana Subdivision and Platting Act. It is therefore respectively requested and strongly recommended that the Preliminary Plat Application for the Allison Phase I subdivision #P-9845 be denied by the Planning Board as submitted. 3 OPTIONS FOR RESOLVING IMPACT ISSUES ALLISON PHASE I MINOR SUBDIVISION Presented by David R. Heilig Adjacent Landowner Oct. 6, 1998 Introduction The following alternatives are presented to either avoid or mitigate the potential social and environmental impacts of the proposed subdivision. This proposed subdivision has the potential to directly impact at least 28 adjacent homeowners and indirectly affect nearly 100 residents of the Figgins subdivision. This proposal differs considerably from previous minor subdivision applications considered by the planning board. The major impacts of this development are off-site and have very high potential to negatively impact adjacent landowners. There is the real possibility that if solutions acceptable to both the developer and the adjacent landowners are not found, this development will end up in litigation. Therefore, I offer these alternatives in the sense of resolving critical issues prior to review and approval of a preliminary plat application for this proposed minor subdivision. They are also offered to avoid litigation relative to this development Issues to be resolved include: I. Potential ground water impacts from the placement of underground utilities including sewer, water, and electrical, and the development of acceptable alternatives; 2. Correct on-site identification of soils and their associated engineering, water management, and hydrologic characteristics that would affect site development. 3. On-site and off-site impacts to environmentally sensitive lands (including wetlands and flood-plain). 4. The historical filling of a jurisdictional wetland on the project site since 1990. 5. Potential contamination of ground water from storm water/ "improved drainage pond". 6. Unrestricted utility company access to the existing power line that provides electricity to a major portion of the Figgins Subdivision. 7. Increased traffic flow and control necessary to ensure school children safety. I ALTERNATIVE 1 Preferred Alternative Resolution: Avoidance This alternative provides for non development of the proposed minor subdivision. The site and adjacent lands would provide for the development of parkland for the major Allison Subdivison(112.21 acres) and should satisfy the major subdivision requirement for 11% parkland. The total parkland acres required for the major subdivision is approximately 13.4 acres. This minor subdivision request is nearly 1.5 acres. The tract wetlands total approximately 4 acres (Appendix Photo Plates 1, 2 and 3) and the remaining 100 year flood plain is nearly 5 acres (Appendix Photo Plates 4 and 5). These nearly l l acres of critical lands and minor subdivision site could be utilized as parkland and provided as an educational outdoor lab for the Morning Star School. This land would also maintain an existing improved trail connecting to the greater Bozeman trail system(Appendix Photo Plates 5a and 5b). If this option was considered and accepted by the developer the critical issues described above would be solved. To offset some of the costs the developer has several options. These include applying to various conservation easement and restoration programs which reimburse successful applicants for conserving and restoring critical lands including wetlands. Alternative 2 Resolution: Mitigation of issues: The following actions would be required of the developer to determine appropriate actions to be taken by the governing body and the developer relative to this alternative: 1. A full and complete hydrological study of the ground water to determine on-site and off-site conditions. This study would be completed by a qualified licensed engineer with hydrology qualifications. See Appendix Photo Plates 6, 7, and 8. 2. A full and complete field determination of fill material and physical analysis of the material. This report would include engineering, water management and hydrologic characteristics of the fill material to at least 10 feet or ground water whichever is less. See Appendix Photo Plates 9, and I0. , 3. Storm water from this site would not be allowed to directly enter the ground water through an "improved drainage pond" but routed to the cities storm water runoff system. 4. Applicant would make full and complete application to the US Army Corps of Engineers disclosing historical fill activities and requesting to mitigate those damages and consideration for a Section 404 permit under the Clean Water Act. See Appendix Photo Plates 11, 12, and 13. 2 5. Provide the Montana Power Company with an enhanced surface easement and ensure complete access to the overhead power line on the east perimeter of the proposed subdivision. See Appendix Photo Plates 14,15, and 16. 6. Complete an analysis and report of the adjacent wetland that would include as a minimum a vegetative inventory and identification of the potential impacts both surface and subsurface to the hydrology and plant community. See Appendix Photo Plate 17 and 18. 7. After all investigations and analysis are completed, submit to the governing board a preliminary plat application that utilizes these data to identify and present all potential on-site and off-site impacts and avoidance/mitigation options. 3 APPENDIX " 1 ^.•.. '4t'L.:+<Wt jl�.dt+rA.a 1� Y _ N ,•�, t�7�'43 t• �y♦4 ..�+ t,• �,-.�1+.� i 5. a �,r,.•.maw,`. �' �': x, + 3 i �~J i S�+ I t ' 4:.�r *•_1. 1`�'i��' -�;'�^ '1;•i' +• •A,".. � ....'i .� •fin - �' � +;.J,•,t`• ����{� tip + ',•.�. y;l( � .L. '+ � XA 4. 4 � _>�• t c J a,! 'r x. IP .ti ^,. F Y, r•.Y 1 111 ��t . �. Jk. 1 ',:a�k};,�'��,•.....•i..:'.t•L: �.k;� 14t'•��a t, +• :l't•. .4. `'7 +�r• •�. �i:dt, .? •��+, _ �L!''�, ' �� b� � E _ �"r. .r '' •f`� rF}I,)� .y s,3....�, \` •s• "tC t*4.td7' 1°�: y� T �Tw. a[' 1p Q la.-� - �°.eE.`�. ,:C`-�. E - � '•- /��t{ ..a.i vp - �b -- per,/ .r.' i.• .. now: Ph .7'1Llf • s it •' }y,� t�� �j '�, +tom .� �. i � ffChh�.IQQ i�t'��``y` . . •. .�'rtl�y.i�c��� �t4'- �, �,"� T 5 'M ;rji •_f'''f .Y y�j� SY+ ... '+i `,- �, ,, �. Appendix Map 1 S. DEPARTMENT OF A:RI,'ULTURE PAGE 1 OF 2 '.TURAL RESOURCES CONSERVATION SERVICE 09/25/98 SOIL FEATURES consultants ! Bedrock Cemen::ed pan I Subsidence ! I Risk of ccrresion Potential ! Map symbol ! ! I (frost action) Uncoated I Ind soil name I Depth iHardness' Depth ri_r:d Initial Total I I steel I Concre_e In I In I Ir, In I ! I I a ! I I 2Ao I I I I ! I ! ! ossBERG-------I --- IHigh (Moderate ILow I I I I i I I I I ONEBASIN LOAM--I --- I --- I - I - I --- 1 --- IHigh !Moderate ILow I I I I I I S. GEPARTME.'JT OF AGRICULTURE PAGE 2 OF 2 .—TU.RAL RESOURCES CONSERVATION SERVICE 09/25/93 SC::. FEATURES :idnote -- SO:L FEATURES =nis report gives estimates of various soil features. The estimates are used in land use planning that involves -r:gineering considerations. 'epth to bedrock is given if bedrock is within a depth of 5 feet. The depth is based cn many soil borings and on observations during soil mapping. The rock is either "Soft" or "Hard". If the rock is "Soft" or fractured, excavations -an be made with trenching machines, backhoes, or small rippers. If the rock is "Hard" or massive, blasting or Special equipment generally is needed for excavation. 'emented pans are cemented or indurated subsurface layers within a depth of 5 feet. Such pans cause difficulty in -excavation. Pans are classified as "Thin" or "Thick". A "Thin" pan is less than 3 inches thick if continuously indurated or less than 18 inches thick if discontinuous or fractured. Excavations can be made by trenching machines, tckhoes, or small rippers. A "Vick" can is more than 3 inches thick if continuously indurated or more than 13 .aches thick if discontinuous or fractured. S::ch a pan is so thick or massive that blasting or special equipment is .eeded in excavation. 'ubsiderce is the settlement of organic soils or of saturated mineral soils of very low density. Subsidence :esults from either desiccation and shrinkage or oxidation of organic material, or both, following drainage. subsidence takes place gradually, usually over a period of several years. This report shows the expected initial idence, which usually is a result of drainage, and total subsidence, which usually is a result of oxidation B:•^.t .-%,,n in the report is subsidence caused by an imposed surface load or by the withdrawal of ground water throughout extensive area as a result of lowering the water table. ,otentiai Erest action is the likelihood of upward or lateral expansion of the soil caused by the formation of segregated ice lenses {frost heave% and the subsequent collapse of the soil and loss of strength on thawing. Frost to-tion occurs when moisture moves into the freezing zone of the soil. Temperature, texture, density, permeability, :ontert of organic matter, and depth to the water table are the most important factors considered in evaluating the -otential for frost action. It is assured that the soil is not insulated by vegetation or snow and is not artificially .rained. Silty and highly structured clayey soils that have a high water table in winter are the most susceptible to 'rust action. well drained, very gravelly, or very sandy soils are the least susceptible. Frost heave and lcw soil trength during thawing cause damage mainly to pavements and other rigid structures. <isk of corrosion pertains to potential soil-induced electrochemical or chemical action that dissolves or weakens .ncoated steel or concrete. The rate of corrosion of uncoated steel is related to such factors as soil moisture, article-size distribution, acidity, and electrical conductivity of the soil. The rate of corrosion of concrete .s based mainly on the sulfate and sodium content, texture, moisture content, and acidity of the soil. Special site examination and design may be needed if the combination of factors creates a severe corrosion environment The steel installations that intersect soil boundaries or soil layers is more susceptible to corrosion than steel in installations that are entirely within one kind of soil or within one soil layer. For uncoated steel, the risk ::•f =orrosion, expressed as "Low", "Moderate", or "High", is based on soil drainage class, total acidity, electrical resistivity rear field capacity, and electrical conductivity of the saturation extract. -or concrete, the risk of corrosion is also expressed as "Low", "Moderate", or "High". It is based on soil texture, ,._idity, and amount of sulfates in the saturation extract. S DEPA.RTM.ENT OF AGRICULTURE PAGE 1 OF 2 :%-'URAL RESOURCES CONSERVATION SERVICE 09/25/98 BUILDING SITE DEVELOPMENT consultants '):e information in this report indicates the dominant soil condition but does not eliminate the need for onsite investigation) :dap symbol I Shallow I Dwellings I Dwellings Small I Local roads I Lawns and and soil name excavations without I with commercial I and streets J landscaping I j basements I basements j buildings I I I I I l 12A: I I I 3-OSSBERG-------ISevere; Severe: ISevere• Severe: !Severe; (Moderate. ! cutbanks cave, wetness I wetness wetness ! frost action I large stones, wetness I I I wetness -CNEBASIN LOAM--ISevere: ;Severe: ]Severe: Severe: ISevere ISevere: I cutbar-ks cave,: flooding, I flooding, flooding, ; frost action, I wetness 1 wetness wetness I wetness ;e"ness J wetness I j I i S. DEPARTMENT OF AGRICtiLTURE PAGE 2 OF 2 AIKJRAL RESOURCES CONSERVATION SERVICE 09/25/99 BUILO:NG SITE DEVELOPMENT :i!:ote -- BUILDING SITE DEVELOPMENT .:s report shows the degree and kind of soil limitations that affect shallow excavations, dwellings with and without isements, small commercial buildings, i_cal roads and streets, and lawns and landscaping. The limitations are light", "Moderate", or "Severe". The iimitaticns are considered "Slight" if soil properties and site features are rerally favorable for the indicated use and lix_taions are minor and easily overcome; "Moderate" if soil properties r site features are not favorable for indicated use and special planning, design, or maintenance is needed to ✓ercome or minimize the limitations; and "Severe" if soil properties or site features are so unfavorable or so .fficult to overcome that special design, significant increases in construction costs, and possibly increased , ntenance are required. Special feasibility studies may be required where the soil limitations are severe. HALLOW EXCAVATIONS are trenches or holes dug to a maximum depth of 5 or 6 feet for basements, graves, utility lines, ;en ditches, and other purposes. The ratings are based on soil properties, site features, and observed performance of ,e soils. The ease of digging, filling, and cc-cacting is affected by the depth to bedrock, a cemented pan, or a very rm dense layer; stone content; soil texture; and slope. The time of the year that excavations can be made is fected by the depth to a seasonal. high water table and the susceptibility of the soil to flooding. The resistance of .e excavation walls or bands to sloughing or caving is affected by soil texture and the depth to the water table. LI.GS AND SMALL COW-1ERCIA:, BUILDINGS are structures built on shallow foundations on undisturbed soil. The lCad Tit is the same as that for single-family dwellings no Nigher than three stories. Ratings are made for small rcial buildings without basements, for dwellings with basements, and for dwellings without basements. The ratings rased on soil properties, site features, and observed performance of the soils. A high water table, depth :_ bedroc to a cemented can, large stones, slope, and flooding affect the ease of excavaticn and ccnstr,4cti•cn. Landscac:ng d grading that require cuts and fills of more than 5 or 6 feet are not considered. :CAL ROADS AND STREETS have an all-weather surface and carry automobile and light truck traffic all year. They :ve a subgrade of cut or fill soil material, a base of gravel, crushed rock, or stabilized soil material, and a .exible or rigid surface. Cuts and fills are generally properties, site features, and observed performance of "e ils. Depth to bedrock or to a cemented pan, a high water table, flooding, large stones, and slope affect the else of .cavating and grading. Soil strength ;as inferred from the engineering classificat_2n of the soil shrink-swe:: tential, frost action potential, and depth to a high water table affect tie traffic-supporting capacity. ;WNS AND LANDSCAPING require soils on which turf and ornamental trees and shrubs can be established and ,intained. The ratings are based on soil properties, site features, and observed performance of the soils. Soil action, a high water table, depth to bedrock or to a cemented pan, the available water capacity in the upper 4 aches, and the content of salts, sodium, and sulfidic materials affect plant growth. Flooding, h_tness, slope, .oneness, and the amount of sand, clay, or organic matter in the surface layer affect trafficabi::ty after vegetation established. NO,YTECHti.CAL SO:LS DESCRIPTFCN REPORT co.^.s•.:::aats lap Soil name and descrip=:or. •:bol � ,2A BLOSSBERG LOAM, 0 TO 2 PERCENT STAPES BLOSSBERG LOAM IS MORE 7^AN 60 INCHES DEEP WITH A DARK COLORED SURFACE LAYER SLOPES OF 0-2 PERCENT, IOMFORM: STREAM TERRACE3; FROST FREE DAYS: 90-110; AVAILABLE WATER CAPAC==Y IN INCHES: 4.6-5.7; MAJOR j CONSIDERATICNS- WATER TABLE; LANDUSE AlAY INCLUDE: RANGELAND. I BLOSSBERG LOAM IS MORE HAM 60 INCHES DEEP WITH A DARK COLORED SURFACE LAYER AND SLOPES OF 0-2 PERCENT. LANDFORM: STREA.M TERRACES; FROST FREE DAYS: 90-110; AVAILABLE WATER CAPACITY IN INCHES 4.6-5.7; MAJOR CONSIDERATICNS: WATER ; LA?+iUSE MAY INCLUDE: RA-14GEL OLD. S. DEPARTMENT OF A0R:CULTURc PAGE I OF 3 :ATURAL RESOURCES CCNSERVATION SERVICE 09/25/98 WATER FEATURES consultants Flooding I High water table and pondirg I i i Map symbol ;Hydro-I ; ; I water I I I `.ax:mum and soil name IlogiC I Frequency I Duration I Months I table I Kind of I Months I Ponding I pondirg Igroup I I I depth Iwater table) I duration depth I ! I I Ft 1 I I I Ft I I f I I I I I I t2A: I I I I 3LOSSBERG-------! C I I i --- 1 1.0-2.0 jApparent I Apr-Jul I --- I --- I I I f I I I I 3ONERASIN LOAM--I D IRare (Brie: I JAIN-JUN ! 0.0-1.0 (Apparent I Jan-Dec I --- I I I I I I I I I S. DE?AR=MENT OF 2 OF 3 .._r-;W1L RESOURCES CONSERVAT:OV SERV;CE og/25/99 WATER FEATURES •mote -- WATER FEATl3RES is retort gives estimates of various soil water features. The estimates are used in land use planning that involves :.jineering considerations irologic soil groups are used to estimate runoff from precipitation. Soils not protected by vegetation are ;signed to one of four groups. They are grouped according to the infiltration of water when the soils are thoroughly t and receive precipitation from :Ong-duration storms. The four hydrologic soil groups are: Group " All. Soils having a high infiltration rate (low runoff potential) when thoroughly wet. 'these consist mainly of deep, well drained to excessively drained sands or gravelly sands. These soils have a high rate of water transmission. Group "E". Soils hating a -cderate infiltration rate when thoroughly wet. .hese consist chiefly of moderately deep or deep, moderately well drained or well drained soils that have moderately fine texture to moderately coarse texture. These soils have a moderate rate of water transmission. Gro+:^ "C". Soils having a slow i..___tration rate when thoroughly wet. these consist chiefi cf soils having a layer that impedes toe dcwnward rove;rert of water or soils of moderately fine texture or fire texture. These soils have a slow rate of water transmission. Group "D". Soils having a very slow infiltration rate (high runoff potential when t'crcu_hly wet. These consist chiefly of clays that have a high shrink-swell potential, soils that have a permanent high water table, soils that have a clayoan or clay layer at or near the surface, and soils that are shallow over nearly impervious material. These soils have a very slow rate of water transmission. a soil is assigned to two hydrologic groups in this report, the first letter is for drained areas a,-.d the second for undrained areas. Flooding, the temporary inundation of an area, is caused by overflowing streams, by runoff from T)acent slopes, or by tides water stand_na for short periods after rainfall or snowmelt is not considered .00dina, nor is water in swamps and marshes. This report cives the frequency and duration of flooding an! ._ time of year when flooding is most likely. Frequency, duration, and probable dates of Occurrence are estimated. -equency is expressed as "hone", ".Rare", 110ccasional", and "Frequent". "None" means that flooding is not probable; ?are" that it is unlike'_, but possible under unusual weather conditions; 110ccasioral" that it occurs, on the erage, once or less in 2 years; and "Frequent" that it occurs, on the average, more than once in 2 years. ,::on is expressed as _r✓ brief" if less than 2 days, "Brief" if 2 to 7 days, "Long" if 7 to 30 days, and "Very if more than 30 days. The information is based on evidence in the soil profile, namely thin strata of gravel, :nd. silt, or clay deccsited b:✓ floodwater; irregular decrease in organic matter content with increasing depth; .d absence of distinctive horizons that fora in soils that are not subject to flooding. Also considered are local iformation about the extent and levels of flooding and the relation of each soil on the landscape to historic floods. S DEPART:4ENT OF A3RICU:T_TRE PACE 3 OF 3 :ATURAL RESOURCES CONSERVAT_01I SERVICE 07/25/99 WATER FEATURES .dnote -- WATER FEATURES--Continued .formation on the extent of flooding based on soil data is less specific than that provided by detailed engineering .rveys that delineate flood-prone areas at specific flood frequency levels. -gh water table •:seasonal? is the hig-est level of a saturated zone in the soil in most years The depth to a �asoral high rater table applies to undrained soils. The estimates are based mainly on the evidence of a saturated one, namely grayish colors or mottles in the soil. Indicated in this report are the depth to the seasonal high iter table; the kind of water table, that is, "Apparent", "Artesian", or "Perched"; and the months of the year that .e water table commonly is high. A water table that is seasonally high for less than i month is not indicated in .is report. "Apparent" water table is a thick zone of free water in the soil. It is indicated by the level at which water ands in an encased borehole after adequate time is allowed for ad3ustment in the surrounding soil. "Artesian" water table exists under a hydrostatic beneath an impermeable layer. When the impermeable layer has bee. •netrated by a cased borehole, the water rises. The final level of the waver in the cased borehole is characterized as i artesian water table. "Perched" water table is water standing above an unsaturated zone. In places an upper, or "Perched", water is separated from a lower one by a dry zone. Only saturated zones within a depth of about 6 feet are rated. ..^.ding is standing water in a closed depression. The water is removed only by deep percolation., transpiration, aporatior., or a combination of these processes. .is report gives the depth and duration of ponding and the time of year wnen ponding is most likely. Depth, duration, -.d probable dates of occurrence are estimated. -pth is expressed as the depth of ponded water in feet above the soil surface. Durat'_cn is expressed as "Very ief" if less than 2 days, "Brief" if 2 to 7 days, "Long" if 7 to 30 days, and "Ve r: long" if more than 30 days. The .formation is based on the relation of each soil on the landscape to historic ponding and on local information about .e extent and levels of ponding. S DEPARTMENT OF AGRICULTURE PAGE 1 OF 2 :A j:AL RESOURCES CONSERVATION SERVICE 09/25/98 CHEMICAL PROPERTIES OF THE SOILS consultants I I I I I I I Map symbol I Depth ! Clay ; Cation- I Soil I Calcium I Gypsum ISalinityl Sodium and soil na:^e I ;exchange ;reaction Icarbonatel ( !adsorption 1 capacity I I I I I ratio In Pct ;^e^y/100g I PH 1 pct I Pct !mmhos/cm I I I I 42A: I I I I BLOSSBERG-------I 0-15 1 20-27,15.0-25.01 6.6-7.8 I 0-5 I --- 0-4 -- 1 15-24 1 20-35115.0-25.01 6.6-7.8 I 0-15 I 10-4 1 124-60 1 0-10I 0.0-5.0 16.6-7.8 I 0-5 I f -- I I I I I I I 3%NEBASIN LOAM--1 0-11 15-27:.15.0-20.01 6.6-8.4 I 0-15 0-4 --- 1 11-21 16-3S 15.0-25.01 6.6-8.4 I 0-15 0-4 1 21-60 0-10 0.0-5.0 1 6.1-7.8 I 0-5 j I i ' S. DEPARTMENT OF AGRICULTURE PACE 2 OF 2 ATIJRAL RESOURCES CONSERVATION SERVICE 09/25/98 CHEMICA:. PROPERTIES OF THE SOILS :3note -- CHEMICAL PROPERTIES OF THE SOILS .is report shows estimates of some characteristics and features that affect soil behavior. .ese estimates are given for the major layers of each soil in the survey area. The estimates e based on field observations and on test data for these and similar soils. =AY as a soil separate ccnsists of mineral soil particles that are less than. 0.002 :llimeter in diameter. In this report, the estimated clay content of each major soil layer ; given as a percentage, by weight, of the soil material that is less than 2 millimeters in .ameter. The amount and kind of clay greatly affect the fertility and physical condition of ,e soil. They determine the ability of the soil to adsorb cations and to retain moisture. :ey influence shrink-swell potential, permeability, and plasticity, the ease of soil aspersion, and other soil properties. The amount and kind of clay in a soil also affect .11age and earthmoving operations. .TION EXCWUM-E CAPACITY (CEC) is the total amount of cations held in a soil is such way that they can be removed only by exchanging with another cation in the natural soil lution. CEC is a measure of the ability of a soil to retain cations, some of which are ant nutrients. Soils with low CEC hold few cations and may require more frequent olications of fertilizers than soils with high CEC. Soils with high CEC have the potential -fair. cations, thus reducing the possibility of pollution of ground water. :L REACTION is a measure of acidity or alkalinity and is expressed as a range in pH ,Iues. The range in pH of each major horizon is based on many field tests. Fer many soils, ,lees have been verified by laboratory analyses. Soil reaction is important in selecting _ops and other plants, in evaluating soil amendments for fertility and stabilization, and determining the risk of corrosion. ,:,CIUM CARBONATE is the percentage by weight of calcium carbonate in the f_ne-earth ,aerial, less than 2 millimeters in size. fPSUM is the percentage by weight of hydrated calcium sulfates 20 millimeters or ,.aller in size, in the soil. ',LINITY is a measure of soluble salts in the soil at saturation. it is expressed the electrical conductivity of the saturation extract, in millimhos per centimeter 25 degrees C. Estimates are based on field and laboratory measurements at representative :tes of ronirriaated soils Ze salinity of irrigated soils is affected by the quality of the irrigaticn water :d by the frequency of water application. Hence, the salinity of soils ir. iadivid aI fields n in differ greatly from the value given in the report. Salinity affects tie suitability of soil for crop production, the stability of soil if used as construction material, and :e potential of the soil to corrode metal and concrete. - Z1 ADSORPTION RATIO (SA.R, expresses the relative activity of sodium ions in .nge reactions in the soil. SAR is a measure of the amount of sodium relative to ,lcium and magnesium in the water extract from saturated soil paste. S. DEPARTMENT OF AGR:CULT-RE PAVE , OF 2 ':ATURAL RESOURCES CONSERVATION SERVICE )9/25/38 ENGINEERING INDEX PROPERTIES consultants 1 ! Classification I Fragments I Percentage passing j map symbol I Depth I USDA texture I I i sieve number-- :Liquid Plas- ar.d soil name ! I I ! I >10 1 3-10 j 'i-it ...city I Ur:fied I ;LkSHT0 linchesjanches! 1 10 1 40 1 200 1 index I I^ I I ! I Pct Pct I J I i Pct I ! I I I ! I I I I I I 2A: ! I I I I ! I I I I I ?LOSSBERG-------1 0-15 ILoam JCL-ML !A-4 1 0 1 0-10 190-100185-100170-95 150-75 1 25-30, 5-10 1 15-24 IGraveliy loam, JCL, CL-ML, JA-2, A-4, A-61 0 1 0-15 170-100165-100150-95 130-60 1 25-35; 5-15 1 1 clay loam, I SC, SC-SM I ! sandy clay ! I I ! I I ! ! j loam I I I ! J ! 24-60 ;Very ccbbly JGM, GP-3M, -1 0 130-45 .25-75 ,2:-70 I10-50 5-20 1 26-25, HP-5 sand, very I s%',, sP-sr; J gravelly lca�nyj I I 1 I I ! I coarse sand, ! I extremely J ; gravelly Ica-myl ! I I I I I I j I coarse sand I I ! J I I I _z2NEBASIN LOAM—: 0-11 -Loam CL-XL' !A-4 0 0 95-1OC,90-100I75-95 155-75 125-3)' 5-1: 111-21 .Stratified. 1CL, .L-ML, ;A-2, A-4, A-6; 0 0 )5-100,90-100160-9C 130-70 j 25-35, 5-i5 I sandy loam to I Sc, SC-SM ! 1 ! I E l I silty clay I ( ! ! I ! loam 1 I I ! I I 121-6) 'Very cobbly :GM, GP-GM, IA-I 1 0 :C-45 �25-60 20.55 110-40 1 5-15 1 20-23; NP-5 loatry coarse SM, SP-SM I sand, very 1 I ! I gravelly J coarse sand, 1 extremely I ! I I I I I I I I cobbly loamy 1 I I I I I I { ! J sand ! J I ! I I I { ! S DEPARTMENT OF AGRICULTURE PAGE 2 Op 21 .•^?AL RESOURCES CONSERVATIO!7 SERVICE 09/25/93 ENGINEER:NG INDEX PROPERTIES .dr.ote - ENGINEERING INDEX PROPERTIES is report gives estimates of the engineering classification and of the range of index properties for the ;or layers of each soil in the survey area. Most soils have layers of contrasting properties within the upper 7r 6 feet. to the upper and lower boundaries of each .aver is indicated. The range in death and information on other .=perties of each layer are given in the published Soil Survey for each soil series under "Soil Series and Their rphology." :{ URE is given in the standard terms used by the U.S. Department of Agriculture. These terms are defined :cording to percentages of sand, silt, and clay in the fraction of the soil that is less than 2 millimeters in -ameter. "Lcam," for example, is soil that is 7 to 27 percent clay, 28 to 50 percent silt, and less than 52 .--_,-t sand. if the content of particles coarser than sand is as much as about 15 percent, an appropriate modifier is :,-led, for example, "gravelly." Textural terms are defined in the Soil Survey Glossary. -assification of the soils is determined according to the Unified soil classification system and the system peed by the American Association of State Highway and Transportation Officials. UNIFIED system classifies soils accerdirg to properties that affect their use as construction material. Soils are assified according to grain-size distribution of the fraction less than 3 inches in diameter and according to asticity index, liquid limit, and organic matter content. Sandy and gravelly soils are identified as GW, GP, 0:4, GC, SP, SM, and SC; silty and clayey soils as ML, CL, OL, MH, CH, and OH; and highly organic soils as PT. Soils iting engineering properties of two groups can have a dual classification, for example, CL-ML. .e AASHTO system classifies soils according to those properties that affect roadway construction and maintenance this system, the fraction of a mineral soil that is less than 3 inches in diameter is classified in one of seven .:ps from A-1 through A-7 on the basis of grain-size distribution, liquid limit, and plasticity index. Soils in oup A-1 are coarse grained and low in content of fines (silt and clay). At the other extreme, soils in group A-7 line grained. Highly organic soils are classified in group A-8 on the basis of visual inspection. If laboratory ,ta are available, the A-1, A-2, and A-7 groups are further classified as A-1-a, A-1-b, A-2-4, A-2-5, A-2-6, A-2-7, A-7- or A-7-6. As an additional refinement, the suitability of a soil as subgrade material can be indicated by a group -dex number. Group index numbers range from 0 for the best subgrade material to 20 or higher for the poorest. ck FRAGMENTS larger than 3 inches in diameter are indicated as a percentage of the total soil on a dry-weight :sis. The percentages are estimates determined mainly by converting volume percentage in the field to weight rcentage. _certage of soil particles passing designated sieves (PERCENTAGE PASSING SIEVE NUMBER--)is the percentage of the ii fraction less than 3 inches in diameter based on an ovendry weight. The sieves, numbers 4, 10, 40, and 200 :USA .a-ndard Series) , have openings of 4.76, 2.00, 0.420, and 0.074 millimeters, respectively. Estimates are based on ,-oratory tests of soils sampled in the survey area and in nearby areas and on estimates made in the field. -:UID LIMIT and PLASTICITY INDEX (Atterberg limits) indicate the plasticity characteristics of a soil. The ^ates are based on test data from the survey area or from nearby areas and on field examination. The estimates grain-size distribution., liquid limit, and plasticity index are generally rounded to the nearest 5 percent. Thus, the ranges of gradation and Atterberg limits extend a marginal amount (1 or 2 percentage points) across 3ssification boundaries, the classification in the marginal zone is omitted in this report. •:.5. DEPARTMENT OF AGRICULTURE PAGE 1 OF 4 NATUP.AL RESOURCES CONSERVATION SERVICE 05/25/98 ..iYSICAL PROPERTIES OF SOILS consultants Entries under "Erosion factors--T" apply to the entire profile. Entries under "Wind erodih:lity group" and "Wind erodability index" apply only to the surface layer) I i I l (Erosion factorslwird iwind Map symbol l Depth l Clay Moist 1 Permea- lAvailablel Shrink- lorganicl lerodi-Ierodi- and soil name I bulk bility I water 1 swell I matter) I I bilitylbility I I ( density 1 Icapacity 1potentiall I K I Kf I T Igroup lindex I I I I I I I I l I_I I 1 in I Pct 1 g/cc ! In/hr i in/in I Pct 1 ! I I I •aza: I ! I I I i I I I 3LOSS&ERG-------I 0-15 l 20-27 1.17-1.27. 0.60-2.00 10.17-0.201Low 14.0-6.01 0.321 0.37; 3 1 6 1 43 1 15-24 ( 20-35 1.11-1.31 0.20-2.00 10.15-0.18!Moderate 12.0-4.01 0.20! 0.321 1 I 1 24-60 1 0.10 :.50-1.70 6.00-20.00;0.02-0.03!Low 10.0-0.51 0.051 0.171 I I I I I I I I I I I I JONSHASIN LOAM--I 0-11 1 15-27:1.10-1.3D; 0.60-2.00 10.18-0.22,Low 14.0-8.01 0.281 0.231 3 I 6 1 48 j 11-21 1 18-35 1.25-1.45; 0.60-2.00 10.17-0.201Moderate 12.0-4.01 0.281 0.28! 1 I ! 21-60 1 0-1•= 1.50-1.70 6.00-20.0010.04-0.061Low 11.0-2.0! 0.05! 0.17; l I-'- S. DEPARTMENT OF AGRICULTURE PA13E 2 OF 4 ATURAL RESOURCES CONSERVATION SaRVii:E 09/25/98 PHYSICAL PROPERTIES OF SOILS ndnoce -- PHYSICAL PROPERTIES OF SOILS ..is report shows estimates of some characteristics and features that affect soil behavior. These estimates _e given for the major layers of each soil in the survey area. The estimates are based on field observations ..d on test data for these and similar soils. ':,AY as a soil separate consists of mineral soil particles that are less than 0.002 millimeter in diameter. 'a this report, the estimated clay content of each major soil layer is given as a percentage, by weight, of the -ail material that is less than 2 millimeters in diameter. The amount and kind of clay greatly affect the ertility and physical condition of the soil. They determine the ability of the soil to adsorb cations and 3 retain moisture. They influence shrink-swell potential, permeability, plasticity, the ease of soil iispersion, and other soil properties. The amount and kind of clay in a soil also affect tillage and arthmoving operations. :IST BULK DENSITY is the weight of soil (ovendry', per unit volume. Volume is measured when the soil is field moisture capacity, the moisture content at 1/3 bar moisture tension. Weight is determined after rying the soil at 105 degrees C. In this report, the estimated moist bulk density of each major soil .3rizcn is expressed in grams per cubic centime�er of soil material that is less than 2 millimeters in :ameter. Bulk density data are used to compute shrink-swell potential, available water capacity, total ore space, and other soil properties. The moist bulk density of a soil indicates the pore space available for titer and roots. A bulk density cf more than 1.6 can restrict water storage and root penetration. Moist ilk density is influenced by texture, kind of clay, content of organic matter, and soil structure. ERMEABILITY refers to the ability of a soil to transmit water or air. The estimates indicate the ate of downward movement of water when the soil is saturated. They are based on soil characteristics oserved in the field, particularly structure, porosity, and texture. Permeability is considered in ne design of soil drainage systems, septic tank absorption fields, and construction where the rate of titer movement under saturated conditions affects behavior. 'TA ILABLE WATER CAPACITY refers to the quantity of water that the soil is capable of storing for use by !ants. The capacity for water storage is given in inches of water per inch of soil for each major soil layer. e capacity varies, depending on soil properties that affect the retention of water and the depth of the root one. The most important properties are the content of organic matter, soil texture, bulk density, and soil tructure. Available water capacity is an important factor in the choice of plants or crops to be grown and in he design and management of irrigation systems. Available water capacity is not an estimate of the quantity of 3ter actually available to plants at any given time. HRINK-SWELL POTENTIAL is the potential for volume change in a soil with a loss or gain of moisture. volume -range occurs mainly because of the interaction of clay minerals with water and varies with the amount and type f clay minerals in the soil. The size of the load on the soil and the magnitude of the change in soil moisture Dntent influence the amount of swelling of soils in place. Laboratory measurements of swelling of undisturbed •lods were made for many soils. For others, swelling was estimated on the basis of the kind and amount of -lay minerals in the soil and on measurements of similar soils. If the shrink-swell potential is rated moderate o very high, shrinking and swelling can cause damage to buildings, roads, and other structures. Special design s often needed. Shrink-swell potential classes are based on the change in length of an unconfined clod as oisture content is increased from air-dry to field capacity. The change is based on the soil fraction less '-an 2 millimeters in diameter. The classes are "Low," a change of less than 3 percent; "Moderate," 3 to 6 ercent; and "High," more than 6 percent. "Very high," greater than 9 percent, is sometimes used. S DEPARTMENT OF AGRICULTL-.kF PAGE 3 OF 4 +TURAL RESOURCES CONSERVATION SERVICE 09/25/98 PHYSICAL PROPERTIES OF SOILS .Anote -- PHYSICAL PROPERTIES OF SOLI.S--Continued 73ANIC MATTER is the plant and animal residue in the soil at various stages of decomposition In report J, :e estimated content of organic matter is expressed as a percentage, by weight, of the soil material that is .ss than 2 millimeters in diameter. The content of organic matter in a soil can be maintained or increased by turning crop residue to the soil. Organic :natter affects the available water capacity, infiltration rate, and _Till It is a source of nitrogen and other Nutrients for crops. ROSION FACTOR K indicates the susceptibility of the whole soil including rocks and rock fragments) to .:eet and rill erosion by water. Factor K is one of six factors used in the Universal Soil Loss Equation (LISLE) �, predict the average annual rate of soil loss by sheet and rill erosion in tons per acre per year. The stimates are based primarily on percentage of silt, sand, and organic matter (up to 4 percent) and on soil :ructure and permeability. Values of K range from 0.05 to 0.69. The higher the value, the more susceptible soil is to sheet and rill erosion by water .OSION FACTOR Kf is like EROSION FACTOR K bct it is for tie fine-earth fraction of the soil. Rocks and _ck fragments are not considered. .OS:ON FACTOR T is an estimate of the maximum average annual rate of soil erosion by wind or water that can -cnr without affecting crop productivity over a sustained oeriod The rate is in tons per acre per year. :Ho ERODIBILITY GROUPS are made up of soils t^at have similar properties affecting their resistance to wind _onion in cultivated areas. The groups indizate the susceptibility of soil to wind erosion. Soils are grouped cording to the following distinctions. 1. Coarse sands, sands, fine sands, and very fire sands. These soils are generally not suitable `_cr crops. They are extremely erodible, and vegetation is difficult to establish. 2. Loamy coarse sands, loamy sands, ica:^._; fine sands, loamy very fine sands, and sapr_c soil material. These soils are very highly erodible. Crops can be grc�rn if intensive measures to control wind erosion are used. 3. Coarse sandy loams, sandy foams, fine sandy loams, and very fine sandy loans. These soils are highly erodible. Crops can be grown if intensive measures to control wind erosion are used. 4L. Calcareous loans, silt loans, clay '_cams, and silty clap loams. These soils are erodible. Crops can be grc:wn if intensive measures to control wind erosion are used. 4. Clays, silty clays, norcalcareous clay loams, and silty clay loans that are more than 35 percent clay. These soils are moderately erodible. Crops can. be ;rows if measures tc control wind erosion are used. S. DEPARTMENT OF AGRICULTURE PACE 4 OF 3 ATURAL RESOURCES CONSERVATION SER:CT- 09/25/98 PHYSICAL PROPERTIES OF SOILS :dnote -- PHYSICAL PROPERTIES OF SOILS--Continued 5. Norcalcareous loams and silt loams that are less than 20 percent clay and sandy clay lcams, sandy clays, and hemic soil material. These soils are slightly erodible. Crops can be grown if measures to control wind erosion are used. 6. Nencalcareous loams and silt loams that are more than 20 percent clay and noncalcareous clay loams that are less than 35 percent clay. These soils are very slightly erodible. Crops can be grown if ordinary measures to control wind erosion are used. 7. Silts, noncalcareous silty clay lcams that are less than 35 percent clay, and fibric soil material. These soils are very slightly erodible. Cress can be grown if ordinary measures to control wind erosion are used. 8. Soils that are not subject to wind erosion because of coarse fragments on the surface or because of surface wetness. .e WIND ERODIBILITY INDEX is used in the wind erosion equation (WEQ). The index number indicates the -ount of soil lost in tons per acre per year. The range of wind erodibility index numbers is 0 to 300. S. DEPARTMENT OF AGRICULTURE PAGE - ,ATURAL RESOURCES CONSERVATION SERVICE 05;25;98 HYDRIC SOILS LIST M.APUNITS WITH HYDRIC COMPONENTS consultants -_ "Hydric Soils Criteria" columns indicate the conditions that caused the mapunit component to be classified as "Hydric" or ,;on-Hydric". These criteria are defined in "Hydric Soils of the United States" (USDA Miscellaneous Publications No. 1491, :ne, 1991. The "FSA Criteria' columns contain information needed for the Food Security Act determinations required by =ction. 512.11(h) (4) of the National_ Focd Security Manual 'August, 1991). See the "Criteria for Hydric Soils" endnote t., D determine the meaning of these columns. Spot symbols are footnoted at the end of the report. I FSA Criteria and I I I I I Hydric Soils Criteria I Information Map Symbol IConponent(C)/; I I i I Mapunit Name Inclusion(!) Hydric ! Local I Hydric I Meets I Meets I Meets I Natural I I j ! Landform I Criteria ISaturation!FloodingjPonding IConditionj Needs I Ccde I Criteria Criteria Criteria of Soil !or.•SiCe I I I I I I I I i I :2A: I I I I I I I I LOSSBERG LOAM, 0 TO I I I I I I PERCENT SLOPES-------BLCSSBERG :. YES IFlood Plain 12B3 I YES I NO I NC I HCSEBAS_IN i LOAM (C,---- YES terrace 2B3 YES NO I NO I i ,EADOWCREEK I I I I LOA-%I (I' ---- NO S. DEPARTMENT OF AGRICULTURE rA,',E 2 2 :ATUIRAL RESCTRCES CONSERVATION SERVICE Y.YDR_C SOBS CRITER:A CODES AND DEFINITIONS ndnote -- HYDRIC SOILS LIST column 'Natural Condition of the Soil' indicates the following information: 'Wooded' indicates the soil supports ;ody vegetation under natural condition; 'Farmable' indicates the soil can be farmed under natural conditions withcwt !moving woody vegetation or other manipulation; and 'Neither' indicates neither of the above conditions are met. All Histosols, except Folists, or Soils in Aquic suborders, great groups, or subgroups, Albolls suborder, Aquisalids, Pachic subgroups, or Cumulic subgroups that are: a. somewhat poorly drained with a water table equal to 0.0 foot (ft.) from the surface during the growing season, or b. poorly drained or very poorly drained and have either: (1) water table equal to 0.0 ft. during the growing season if textures are coarse sand, sand, or fine sand in ail layers within 20 inches (in ), or for other soils, or (2) water table at less than or equal to 0.5 ft. from the surface during the growing season if per.eabi_ity is equal to or greater than 6.0 in/hour (h.) in. all layers within 20 in., or (3) water table at less than or equal to 1.0 ft. from the surface during the growing season., is permeability is less than 6.0 in./h. in any layer within 20 in , or Soils that are frequently ponded for long or very long duration during the growing season, or Soils that are frequently ficoded for long or very long duration during the growing season- S. DEPARTMENT OF AGR:*'LTURE PAGE 1 OF 3 VA:URAL RESOURCES CONSERVATION SERVICE 09/25/98 SPL41TARY FACILITIES consultants The information in this report indicates the dominant soil condition but does not eliminate the need for onsit_ investigation] i i I I Man symbol ] Septic tank Sewage lagoon ] Trench I Area I Daily cover and soil name ] absorption areas I sanitary ] sanitary I for landfill ] fields f landfill I landfill I I I I i42A: I I I I 3LOSSBERG-------ISevere: Severe: ISevere: ]Severe: !Poor: poor filter, ! seepage, I seepage, I seepage, ] seepage, ] wetness wetness I too sandy, ] wetness ] small stones, I wetness I j too sand.: ! I I I SONEBASIN LOAM--]Severe: Severe: ]Severe: ISevere: (Poor: poor filter, seepage, seepage, ( seepage, seepage, wetness wetness too sandy, ] wetness small stones, ] wetness ] I too sandy S. DEPARTMENT C= A:;RIC'„LT1.'RZ IAIE 2 .-c 3 .:ATURAL RESOURCES CONSERVATION SERVICE 09/23/98 1AR': FACILITIES Tndrote -- SANITARY FACILITIES -is report shows the degree and kind of soil l_n--tations that affect septic tank absorption fields, sewage lagoons, d sanitary landfills. The limitations are considered "Slight" if soil properties and site features generally are •avorable for the indicated use and limitations are minor and easily overcome; ":Moderate" if soil properties cr site eatures are not favorable for the indicated use and special planning, design, or maintenance is needed to overcome or inimize the limitations; and "Severe" if soil properties or site features are so unfavorable or so difficult to overcome _-at special design, significant increases in construction costs, and possibly increased maintenance are required. "his report also shows the suitability of the sails for use as daily cover for landfills. A rating of "Good" indicates that soil properties and site features are favorable for the use and good performance and low maintenance can be ;•xpected; "Fair" indicates that soil properties and site features are moderately favorable for the use and ore or .tore soil properties or site features make the soil less desirable than the soils rated "Good"; and "Poor" -indicates that one or more soil properties or site features are unfavorable for the use and overcoming the unfavorable .roperties requires special design, extra main=er.ance, or costly alteration. E?TIC TASK ABSORPTION FIELDS are areas in whit= effluent from a septic tank is distributed into the soil t ra::gh :•,bsurface tiles or perforated pipe. Cnly that cart of the soil between depths of 24 to 72 inches is evaluated. The ratings are base on soil properties, site features, and observed performance of the soils. Permeability, a high :ater table, depth to bedrock or to a cemented pan, and flooding affect absorption of the effluent. Large stones .::d bedrock or a cemented pan interfere with installation. Unsatisfactory performance of septic tank absorption fields, .ncludirg excessively slew absorption of effluent, surfacing of effluent, and 'hillside seepage, can affect p-,iblic health. roundwater can be polluted if highly permeable sand and gravel or fractured bedrock is less than. 4 feet below the ise of the absorption field, if slope .s excessive, or if the water table .s near the surface. :.ere must .nsaturated soil material beneath the absorption field to filter the effluent effectively. Many local ordinances equire that this material be of a certain thickness. ;EwAGE LAGOONS are shallow ponds constructed to hold sewage while aerobic bacteria decompose the solid and ligta d .astes. Lagoons should have a nearly level floor surrounded by cut slopes or embankments of compacted soil. Lagoons ;ererally are designed to hold the sewage within a depth of 2 to S feet. Nearly impervious soil material for the lagoon. -.1oor and sides is required to minimize seepage and contamination of ground water. Th.s report gives ratings for he natural soil that makes up the lagoon floor. The surface layer and, generally, 1 or 2 feet of soil mater.al 'low the surface layer are excavated to provide :material for the embankments. The ratings are based on soil roperties, site features, and observed performance of the soils. Considered in the ratings are slope, permeability, a ;igh water table, depth to bedrock or to a cemented pan, flooding, large stones, and content of organic matter. xcessive seepage due to rapid permeability of the soil or a water table that is high enough to raise the level of sewage .r. the lagoon causes a lagoon to function unsatisfactorily. Pollution results if seepage is excessive or if floodwater vertops the lagoon. A high content of organic :hatter is detrimental to proper functioning of the lagoon beca•,se it .nhibits aerobic activity. Slope, bedrock, and cemented pans can cause construction problems, and large stones can .kinder compaction of the lagoon. floor. ?NIT%RY LANDFILLS are areas where solid waste is disposed of by burying it in soil. There are to types of landfill, trench and area. in a trench landfill, the waste is placed in a trench. It is spread, compacted, and covered daily with a thin layer of soil excavated at the site. In an area landfill, the waste is placed in successive layers on the surface of the soil. The waste is spread, compacted, and covered daily with a thin layer of soil fcr:m a source away rom the site. Both types of landfill must be able to bear heavy vehicular traffic. Both types -involve a r__r of ;roundwater pollution. Ease of excavation and revegetation need to be considered. Ti:e ratings in this reper- are based a DEPARTMENT OF AGRiC[iLT:%RE PA•�.,E 3 OF 3 ,7JRAL RESOURCES CONSERVATION SERVICE 09/25/98 SANITARY FACILITIES .note -- SANITARY FACILITIES--Continued soil properties, site features, and observed performance of the soils. Permeability, depth to bedrock or to a rented pan, a high water table, slope, and flocd'_rg affect both types of landfill. Texture, stones and boulders, ?hly organic layers, soil reaction, and content of salts and sodium affect trench type landfills. unless otherwise ..ated, the ratings apply only to that part of the soil within a depth of about 6 feet. For deeper trenches, a .Titation rate "Slight" or "Moderate" may not be valid. Onsite investigation is needed. %ILY COVER FOR LANDFILL is the soil material that is used to cover compacted solid waste in an area type sanitary .ndfill. The soil material is obtained offsite, transported to the landfill, and spread over the waste. ;l texture, wetness, coarse fragments, and slope affect the ease of removing and spreading the material during wet .d dry periods. Loamy or silty soils that are free of large stones or excess gravel are the best cover for a ,ndfill. Clayey soils may be sticky or cloddy and are difficult to spread; sandy soils are subject to soil owing. After soil material has been removed, tie soil material remaining in the borrow area must be thick_ enough er bedrock, a cemented pan, or the water table to permit revegetation. The soil material used as final cover for a nifill should be suitable for plants. The surface layer generally has the best workability, more organic matter than. .e rest of the profile, and the best potential for plants. Material from the surface layer should be stockpiled for use the final cover. �,� d tr4 �': • �b`>> i �� � -`•Ih.`. �Y � '�itt4' i �•f! �flZ.+ � �'Ff �aq"-t�, t ✓.,{{� �iA i'N.q�.�e,',tGr.,.��- i M1 V ,l_��r }.r" �YF+ v �� ��y�t�,l •pl •� ., 'fi ��_ - .'�% `.max.^'N•..ti•}�:. Al- .1`�`rr".�.a'w!�� _1 N'�ij�1-�/•� •��1� ��•�'F'����� _.ice� ��tl�Yll� it 1 3:! iI°(^j `• ',(`T- '5r-n- Y. 1 11�ri_FY�,IIi.:_`P�i ¢}�� sue, � w rF -�� _.t ti,,�ij3r�r� W�tl�'•r�•.��•+ 1 , `t ", ..��':. ry --•-• -,, 2 r '��'9,+ r•��•'ti,�T �i�'r.0....+..:z�Xs==�!«�`�s � ,. r i F iL X"'o. } � , _. ._ •� may '` t 1 ' Wz :f kip A, op "tl"Fes•' I '� '��� - � , .� i.,.._.. - •r. _ • Appendix Nla1) 2 .r :iK. aY s C .. ` yy,� ��` ,! .i%rda.. •a-,y},. r !1' �• t f •�` rig .��� "~�..`1'O. "may �•i. .� - rh n. .� ' �'. . ' la. 4'' tl ''�'i'��f• s A i" '! L�h n.� �1��, �s ;i ��. • ". •!'• ' s -;75�'f � � `A:��'7� ='fie: ' < 1 � b' Y� e � �.�1" ¢S 'y♦ ,s`,M i��.� 4T/'� ` r, `; .a.fi+i.'... , i ��. >•1 +.s `,� '�•4 pia+�.�.°}�Q'.'!i!?' .._....1;i�►� >\ �._ y, ��'.. -' r''••�r,, �nt�'} 1' �'.. !'". � �; a.. .,if!•a� tl. ii' ,. 24• �� ,t i. I. ,Iv`RS - F, • �� � - yr: •rtl i:'n. 2 ,Y�t�tls. •yt M .• ` �'. ir 15 wd ___i�yyyppp�� \t � 1. / t �J •� � I '•.�♦h r IlkAw .r -4 ]• }} ♦fr +.'e` `prr1�' ` t '' ,�n .� ,.'.�.: - :1n��endix Mal) 3 W M (}W N —1 • W �I � 9 --j O rl rd 04'a 1v a 0 ,0 4-1 N S4 �J •.-1 r1 P w wrnrnw +� 3 G ro a� s~ � o N 4-) M O r � x � O N 04 ro a w m W w � (!� a ° ro 4-, w O z ro �4 f � l � f .O 1 O U' 4J 0 x o � u � U •rl 41 a o N v 41 .H rX4 w .iT �. �•- .+,;�f _k t r.3"t t' -XI, r v,• 1`�-7 �. . �s�:.� l� �r� \� ►.� p���ht� � �r�l�� � 1 � �.1 Al �1 � . 1 r s•— ...`+ r r ;Y Pro v�, �� t .7v��.e�+. �y'Di ,i...1 s• 1'' ,. e's •r ii �t y 11 f,,,r S` �,"�,S { 1 it a rl +7 '• tV +•r,..�.. ,`ram 1 j" �-�. �iz1' r �-ro '-_- - 4`4- 1 vv,�ni ' 4 1• �y i J. 41t, +. ,• -/+a " •,_f� . 3 « t 1 t,'�t,,..'.K:�l::a'. � y -r �t. t j Photo Plate 4: l+loodplain in the proposed Allison Subdivision adjacent to minor site. Photograph provided by resident at 2509 Westridge Dr. (Spring 1997). View is southwest. - it "� •.M�� �..- �rl Photo Plate 5.- 9{loodplain in the proposed Allison Subdivision adjacent to minor site. Photograph provided by resident at 2509 Westridge [Dr. (Spring 1997). View is west. i t `c+ c L°`ts4�r ,Af p S (6 Photo Plate Sa: Existing improved trail located on existing railbcd, 100 year flood plain and adjacent to wetlands. This view is looking southwest. r�f �,t�a, ,�''�tax. �• _ ,y.,dr.'*,� .�,•�1!.1 .iN"� 'i'�7•l� '~��� �' .i!i,�v./6�'4-vim 3 Photo Plate Sb: The improved trail connects to the Bozeman Galigator frail and provides the connection between Morning Star and Saeajawea Schools and the main trail system. The view is looking south with site and Moming Star School in background. Photo 11,11me 6 Wetland area adjacent Io the liol-111 ofthe silc with fiactlhove %%.e( I;Ja. species such as Cat-tailsalld r(Ishes [hat are indicatik e of surfiace wafel• conditions. vy- "Rk,I A .! Photo Plate 7 M Water flo%viilo N till-Otto �,IjN j r culvert downslope % J0 4- from proposed subdivision. 1,W. �i No r \� fi`��A,�t,4�'�c�?t,����A'1� t�,4`�" >4 �ia Photo Plate 8 Ab, loiie(i well site justg -e, -1! 1 south and tipso am fiom 't under road bed. culvert W This location is., ealli fi-oll) Subdivision ICA qp : Stj site UA Photo Plate 9: Fill material on southwest corner of proposed subdivision site. S,xis ;. i< �o�yr.c .y=c••i �+ �t r fij,,4F "q 1!" p gip ,I�y�}�, •.l � ��.,�'�•�`�'.a tip;�'� � �r� �'r� k � ���'}.., ts' s � �.,�li'•�1.f� .lUi •J� ,t iy."O t ��' ,,i� 4tr,.��, j9„s'p v :'�i`��;�'_,.�:'�.isOn.`�y.!✓1��11�f�tfD".���"�'*'�a:!`r': '.��;�� �. Photo Plate 10: Bill material on north border between remaining wetlands and proposed subdivision site. Photo Phite I I Fill material r"C111lN ph on proposed subtkisa►II Sit" Photo Plate 12 III.011ie view of fill material placed in wetland since 1990. Generally ; Young Canadian thistle stands Y �' indicate recent ti' k v h � Y,'' 4"i�6 •'! 'f ,7� Y. • M 1ii Ii'}Y �ij fill material oil this44. r r yj< particular site. � tls ,, ta:3�1 1 '",. pp 1 ytM1tl �•.. y!_ wi �'v�� �r'��4> �� � �, ' irti .�ix� is .j. +1( zJ r !f}i 1i slt�� I , ,^l`n,tN� S�4 ae l�C9• R � � ,k' � &rt � "KK � `�i T� �"1w/ 11ii „� 7i�� ���� ,�y�• {i,, "T•Z"'� '�'`p! �'�/1 1 � '� � f y j'i' •� ,r�zt`!. ,�1`� °id�s� _�t I'1' �iA.��ji x,��`l, i . 1 Photo Plate 13 1 i1 ► View looking southeast towards Figgins subdiv isio'.1 This photo also shows fill from old rail bed on left vegetatively coverd N%Itll iril ! +. I'ilsti iltid newer 1[Il Illatl 11c2f ��4•�'° 4.�} �. ,, :'.^Fair t yt'3.•. oil II`llt Covered ��, i �S��•I�r �.s, - sty y�r�VP`'�,.IX�� �r�G' Kam. %bItII 1I101c=' �k� '" � `•� °tit.��i� � R; ;l • ,R,,,,TL,1..L' "' Photo 1'IatL 14 t c� Main electrical power line ��..} - �• k A � ; serving f igginS and Monlim, Star School. This photo lookino somb r � Isom site towards schuul. It T47 ab � k IN�/���y�,F3 Ji'' rW �y G ' �"A9••z.rwlL 's_� '�I y��I Photo Plate 15 Power line looking south towards pro- posed subdivision site. Photo Plate 16 View looking northeast towards VL'1' building. t This photo also shows the underground delivery column from power pole that serves the lower -igginS Subdivision. 4 �a0th.ryi t#1 ty '� ; !�9f1iiY,i�#{3:i + r _ ► .i;LAP '\�C-> � a.�'•4,.. °',t; ••s. }:�'�' �i7.y1\��,},y�yC. 1 l�\,\7 .�r���j�ro• 1`'i. �•�T1Y t�K .1 � ac11�t�y;,V--jy ( ^ ��►t5,r r� �. "S•c.1k y,v-. a�• �f• 4 ,i4l.�t�}}<•.'� L�y -"}• ? p MV, Iwt �t. •\y b,,; ai. t' h>\ A°.>:• is;x ?: i' 'C,t �3 .ro � w�:ia`Y.'�5�1,t,�'���EZ'S �,w''r:',�e�9` c �..a;f. ��i��.�`. �• :6Ii'.� � ,1 . Photo Plate 17: Current wetland site conditions including herbaceous Gild woody plant species. '1 t'�b:�'Fa'�`��:.fi';^i: . � `;a... � • :. .� .+,�F• ra. dK4'�i«-��.':-•' ' ,tt�f. 1' �R"�` '��'I:y�i��'Stee"` \\yi.� i 1 �, ?; \ q�� � �(,•'�;�f'li y x�T �.�✓n:7�• \ 41f �d,"� t ' 1y trl� aL `+ :t �yr , ,f.. '�.i, • `I►, ti .0?: �: Eilt :• T. \`� - ��\ .'.".t�Ptl,►•,y(((r'3 'gg ,.v �'r hf ,t� la l� M•4J,'w!f�f yY'fq fif:h ti)� 1ti t4M;a ' {{ t '� At I' L�j ,{roro 4�` z ro #a• �,1�'y .. �Y vT i�'� 1 �Y�1\��1..\ A �i !. � 1'y�I.JA 1 � • € v _ ;,M a•ta �� .`•;LC, ;\i��•1l�1 ��,� fff �t ti` , a� '!;s\13r� `"(l7jiy C" `J� t�G%� S� � Y.�.i'� '��Ft ��� � .. •<•\\C:f�:P •1`2 Vy yty 1� �".t� /r��. i}yl�• f.'r hri� W, `!,� 1 l�' '��' �•i.a'1't''r 'T v7 „'4 1 �t ��1 `k, 1n ��M• �� � t �.,.4,'� \,�S�11VV+,t� 'l''lff'4. :I '` x N C✓,'� a... '^.fir ''► ^( ,q C ;k t. v.1 ; (. �� ,• �p� r � �'i�` •'S� �,zj� D� 3�1 Photo Plate 18: Water surface in the wetland with associate hydrophytic prints.