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Drainage Reports - 09/30/2015
EROSION CONTROL REPORT / STORMWATER MANAGEMENT PLAN FOR THE COLONY AT RIGDEN FARM - LOT 2 CITY OF FORT COLLINS,.CO Prepared by: Interwest Consulting Group 1218 West Ash, Suite C Windsor, Colorado 80550 Phone: 970.674.3300 Fax: 970.674.3303 Prepared for: SCHUMAN COMPANIES, INC 605 South College Avenue, Suite 100 Fort Collins, CO 80524 September 11, 2015 MITlRW 1r CONSULT1 NG GROU P 3 NTERW EST CONSU LTI N G' GROUP ' September 11, 2015 ' Mr. Jesse Schlam City of Fort Collins Stormwater t 700 Wood Street Fort Collins, CO 80522-0580 RE: Erosion Control Report / Stormwater Management Plan The Colony at Rigden Farm Lot 2 Dear Jesse, I am pleased to submit for your review and approval, this Erosion Control Report / Stormwater Management Plan for The Colony at Rigden Farm Lot 2 development. This report provides the City with an erosion control plan for the proposed development that addresses the topics outlined in the City Erosion Control Report Requirements. This plan mimics the State of Colorado General Permit and Stormwater Management Plan requirements. I appreciate your time and consideration in reviewing this submittal. Please call if you have any questions. ' Sincerely, 6 O'D Li0"F Reviewed By: ✓Pa BAo. 00 : 46248 pc ' Skylar Brower, P.E. Nq� SS��"••••'N�'� Robert Almirall, P.E. � p� Colorado Professional Colorado Professional Engineer No. 44248 Engineer No. 33441 TABLE OF CONTENTS ' 1. INTRODUCTION.................................................................................................................... 1 2. SITE DESCRIPTION............................................................................................................... 1 ' 3. BMPS FOR STORMWATER POLLUTION PREVENTION ................................................ 5 3.1. Erosion and Sediment Controls........................................................................................ 5 3.2 Materials Handling and Spill Prevention......................................................................... 7 ' 4. STORMWATER MANAGEMENT CONTROLS.................................................................. 9 4.1. SWMP Administrator ......................... :.............................................................................. 9 4.2. Identification of Potential Pollution Sources................................................................... 9 ' 5. FINAL STABILIZATION AND LONG TERM STORMWATER MANAGEMENT......... 11 '6. INSPECTION AND MAINTENANCE................................................................................. 12 6.1. City of Fort Collins Standard Erosion and Sediment Control Notes ............................. 12 ' 6.2. City of Fort Collins Erosion Control Security Calculations ........................................... 14 7. SWMP IMPLIMENTATION................................................................................................. 15 t APPENDIX A—BMP DETAILS................................................................................................. P ' APPENDIX B—EROSION CONTROL PLAN AND SITE MAP .......................................... Q APPENDIX C—CONSTRUCTION SEQUENCE....................................................................R APPENDIX D—SOIL INFORMATION.................................................................................... S LIST OF FIGURES & TABLES t Figure 1--Vicinity Map.................................................................................................................... 2 Table 6.1 — Erosion Control Cost Estimate...............................................................14 1. INTRODUCTION The primary purpose of preparing and maintaining a stormwater management plan is to ' improve the health and quality of the State's urban waterways. The preparation and maintenance of the plan will contribute to this objective by facilitating an approach to stormwater management, establishing a program of actions to be used during construction activities, and describing stormwater management controls and various Best Management Practices (BMPs) necessary to reduce erosion, sediment and pollutants in stormwater ' discharge. Information concerning the State of Colorado General Permit and Stormwater Management Plan are not included in the appendices of this report. The site is over one acre and will require a SWMP permit, which will be the responsibility of the Contractor. 2. SITE DESCRIPTION ' The Colony at Rigden Farm, Lot 2 is located within the Rigden Farm development in Fort Collins. It is located in the Northwest Quarter of Section 29, Township 7 North, Range ' 68 West of the Sixth Principal Meridian, in the City of Fort Collins, Larimer County, Colorado. See figure 1 on the next page for the vicinity map. This site was subdivided in 2005 and is legally known as The Colony at Rigden Farm Lot 2, being a replat of Rigden Farm Filing 1. The site is 1.34 acres and is bounded on the north by Custer Drive, the west by Kansas Drive, and the south and east by The Willow Subdivision. The site was initially developed in 2006 when the parking lot and utility ' improvements where constructed for a proposed multifamily development. The building was not constructed at the time of the site improvements. This minor amendment is for ' the approval of a new multifamily building and associated walk and utility connections to the existing improvements. CY L.J Ir m VICINITY MAP SCALE: 1 " = 500' Figure 1--Vicinity Map We HIIII � . All paved areas are designed with a minimum slope of 0.5% and all grassed areas (excluding the proposed rain gardens) are designed with a minimum slope of 2.0%. Side slopes in grassed areas are graded to a maximum of 4:1. Runoff from the north portion of the site will sheet flow north until it is intercepted by Custer Drive. This runoff will be conveyed via existing curb and gutter to an existing 2 inlet located approximately 500 feet east of the site. Runoff from the existing parking lot on Lot 2 — which covers the eastern and southern portion of the site - will follow existing flow paths to an existing inlet located in the southeast corner of the site. The majority of runoff from the proposed building will be directed to one of two proposed rain gardens located on the east and west side of the building. The under drains for each rain garden will be conveyed to the existing storm sewer located in the southeast corner of the site. Existing soil types on site as classified by the NRCS Soil Survey of Larimer County are classified as Nunn clay loam. Please refer to Table 2.1 for additional soil characteristics. Table 2.1: On -site Soil Characteristics Soil Type Percent of Site Hydrologic Soil Group K Factor' Wind GroupZ Nunn Clay Loam 100% C 1 0.32 6 'K factors range from 0.02 to 0.69. The higher value, the more susceptible the soil is to sheet and rill erosion by water. ZSoils assigned to wind group 1 are the most susceptible to wind erosion, soils assigned to wind group 8 are the least susceptible. Overall, the soils on site can be classified as moderately erodible. Please refer to Appendix D for the on -site soil information from the NRCS Soil Survey of Larimer County. There are no floodplains mapped by either the City of Fort Collins or FEMA on this site. ' The anticipated sequence of construction shall progress as follows: 1) Installation of perimeter erosion control measures (other measures as required for ' the permit will be constructed throughout) including silt fence along the western and northern property and the vehicle tracking control pad at Kansas Drive. ' 2) Clearing, stripping and grading 3) Rough grading of water quality pond to be used as a temporary sediment trap ' 4) Utility installation 3 ' 5) Sub -grade preparation for the building and walks ' 6) Sidewalk construction 7) Building construction (this may occur simultaneously with items 5 and 6) ' 8) Final grading and landscaping. All disturbed ground will be impervious (concrete or building), seeded and mulched, sodded or xeriscaped to permanently stabilize the site. The 10-year runoff coefficient associated with this project will be 0.86. ' No known sources of pollution currently exist on this site. Potential pollutant sources brought onto the site during construction will be discussed (along with spill prevention) ' in Section 3.2 below. The anticipated non-stormwater components of discharge with this project are landscape irrigation return flows. The ultimate receiving water for this area is ' Fossil Creek Reservoir. Runoff from the site is conveyed to the existing storm system in the southeast corner of the site. This storm system discharges into the existing Rigden regional Water Quality Pond 2. Water is released from the WQ pond into the Foothills ' Regional Channel that runs west to east along the southern boundary of the Rigden Farm development. The Foothills Regional Channel drains into the Fossil Creek Reservoir ' Inlet Ditch that is located on the east side of Ziegler Road. This ditch flows south and ultimately discharges into Fossil Creek Reservoir. 3. BMPS FOR STORMWATER POLLUTION PREVENTION 3.1. Erosion and Sediment Controls ' Structural Practices: -Structural practices for the site will consist mainly of silt fence, vehicle tracking control pad, concrete washout area, inlet protection and wattles which ' are described in detail in the following paragraphs. Detail drawings of these BMPs are also included in Appendix A. These BMPs are expected to change as the construction ' progresses and it is the responsibility of the contractor to ensure appropriate BMPs are in place and/or removed at the appropriate time in the construction sequence. All temporary and permanent erosion and sediment control practices must be maintained and repaired as ' needed to assure continued performance of their intended function. All BMPs shall be inspected and repaired or replaced as indicated in Section 6 and as required to satisfy the ' conditions of the Permit. Silt fence is intended to filter sediment and contaminants from non -point runoff leaving ' the site. Perimeter silt fence shall be in place prior to commencement of any construction activity. During clearing and grubbing necessary for perimeter silt fence installation, all ' cleared material shall be placed on the uphill side of the trench so that if erosion occurs from the cleared material, the sediment will be trapped in the exposed trench and not ' transported downstream. A standard vehicle tracking control pad cannot be used on this project as the site access is ' in asphalt. For this reason the contractor shall install perimeter protection along the limits of disturbance to limit access to the active construction area. The contractor is responsible to limit sediment from entering the public right of way. The contractor shall use -a trackout control device or other approved method to accomplish sediment control. ' Concrete washout area is intended to contain washout liquids and solids that result from the cleaning of concrete trucks and pumps. Washouts should be placed near the area ' where the concrete is being poured. Inlet -protection prevents sediment from entering storm drainage systems prior to ' permanent stabilization of the disturbed site area via ponding and settling of sediment. Inlet protections shall be placed at new inlets and existing inlets near the site. Storm ' sewer inlet protection must be inspected and maintained after every rainfall event that 1 5 produces runoff. Sediment must be removed and rocks replaced. Wattles are intended to filter concentrated runoff of sediment before entering drainage facilities. Wattles shall be implemented as gutter sediment control where necessary and as inlet protection. Wattle dikes shall be installed in swales. Wattles shall be installed immediately upon completion of over -lot grading and/or the installation of the proposed storm sewer inlets. Non -Structural Practices: All low sloped areas exposed during land disturbing activity (stripping, grading, utility installations, stockpiling, filling, etc.) shall be kept in a roughened condition by ripping or disking along land contours until mulch, vegetation or other permanent erosion control is installed. All exposed steep sloped areas exposed during land disturbing activity (stripping, grading, utility installations, stockpiling, filling, etc.) shall have slope protection. The contractor shall use a "tracked" vehicle, run perpendicular to slope to inhibit rill/gully erosion; the contractor may use other windrow -type methods as necessary. No soil shall remain exposed by land disturbing activity for more than thirty (30) days before required temporary or permanent erosion control (seed/mulch, landscaping, etc.) is installed. THE CONTRACTOR SHALL ADD ANY AND ALL BMP'S AND DETAILS NEEDED FOR SEDIMENT/EROSION CONTROL. 6 3.2 Materials Handling and Spill Prevention Potential impacts from significant materials and their handling are as follows Chemicals, cleaning substances, and petroleum products related to the construction will be stored within the construction trailer or storage shed where it will not be in contact with precipitation. No storage of these materials will be allowed outside. Fueling and maintenance of equipment shall take place at the construction. staging area. Fueling will be accomplished with fueling trucks on an as needed basis. Absorbent (kitty ' litter) will be in the construction trailer and applied on any spill immediately and the dry material disposed of properly and legally. ' All construction waste shall be disposed of in the available dumpsters throughout the workday. Liquid wastes will be hauled off site and disposed of properly and legally. ' Any cleaning or maintenance of small equipment will be required to be done within a containment device (horse trough or small "kiddy pool") and the liquid disposed of properly and legally. ' In the event of any spill, the SWMP Administrator shall be immediately notified. ' Spills can be broken into three categories. Their definitions and the procedures required to address the spills are as follow: Minor Spill — A spill generally of less than 5 gallons which is unlikely to reach adjacent waters (i.e. equipment leak). Procedure: a. Stop the source of the spill. ' b. Contain the spillage. c. Contact the SWMP Administrator. d. Clean up the spill with on -site absorbent material (kitty litter) e. Dispose of the dry material properly or legally. f. Document the spill and the response in the SWMP including dates and times — verify that the pollutants are completely cleaned up. g. Include incident in the following training meeting. h. Provide information to the City of Fort Collins at the next regular inspection. Significant Spill — A spill of pollutants or oils of any size that will likely or has reached adjacent waters, may endanger health or the environment, or which may exceed a water ' quality standard. Procedure: a. Stop the source of the spill. b. Contain the spillage. c. Contact the SWMP Administrator. d. Clean up the spill with on -site absorbent material (kitty litter) e. Dispose of the dry material properly or legally. ' f. Document the spill and the response in the SWMP — verify that the pollutants are completely cleaned up. g. Notify the City of Fort Collins (970) 221-6700 and the Colorado Department of Public Health and Environment spill reporting line (877) 518-5608 of the spill. h. Notify the same two entities above with a written submission (outlined within the permit) within 5 calendar days. i. Include incident in the following training meeting. Hazardous Spill — A spill of a dangerous substance requiring, expert cleanup. Procedure: ' a. Secure the area — do not approach the spill. b. Offer first aid to any injured parties. ' c. Call 911 and describe the nature of the spill and any injuries. d. If possible, isolate downstream areas from the spill (for example, cover an inlet that is downstream and a' safe distance from the spill ' with plastic and soil). e. Contact the SWMP Administrator. f. Document the spill and the response in the SWMP ' g. Notify the City of Fort Collins (970) 221-6700 and the Colorado Department of Public Health and Environment spill reporting, line (877) 518-5608 of the spill. ' h. Notify the same two entities above with a written submission (outlined within the permit) within 5 calendar days. i. Include incident in the following training meeting. 8 1 4. STORMWATER MANAGEMENT CONTROLS 4.1. SWMP Administrator ' The Local Contact and SWMP Administrator is (INSERT CONTACT NAME, POSITION; COMPANY, AND PHONE NUMBER). ' (INSERT CONTACT) will be responsible for developing, implementing, maintaining, and revising the SWMP. (INSERT CONTACT) will also be responsible for required inspections and coordinating and documenting changes or repairs resulting from inspections. (INSERT CONTACT) will be responsible for the training and enforcement aspects of the SWMP and he is the first point of contact for any stormwater issues. 4.2. Identification of Potential Pollution Sources The permit identifies 13 potential sources that must be evaluated for their potential to contribute pollutants to stormwater discharge. These items have been evaluated below for this project: 1) Disturbed and stored soil — YES — The construction will require that areas be disturbed exposing soil including foundation construction, slope construction, and sidewalk connections as shown on the plans. BMPs will include silt fence on the downhill side of disturbed slopes, inlet protection on existing and proposed inlets, minimizing disturbance of existing vegetation and hard surfaces, and slope roughening and tracking of slopes after disturbance and prior to landscaping, paving, or building will be implemented. 2) Vehicle tracking of sediment — YES — The construction will require that subgrade be prepared for building construction and that vehicles drive on unpaved surfaces to the proposed building and utility improvement locations. BMPs will include a policy that vehicles be clean prior to entering the site and, if they become muddy during construction or earthwork activities, mud is removed by hand from the vehicle prior to departing the site in an area near the vehicle tracking pad. Any soil that is removed is to be disposed of in the trash dumpster by scraping or sweeping. Any muddy vehicle will use the vehicle tracking pad prior to leaving the site. 3) Management of contaminated soil — NO — Soil borings do not indicate any existing contamination. If contaminated soil is encountered, it shall be disposed of in an approved manner as outlined by the department of public . health and environment. 4) Loading and unloading operations — YES — Chemicals and petroleum products will be brought to the site. Anytime these are being transported, 9 5) 6) 7) 8) 9) 10) they will be in a sealed container. Outdoor storage activities — YES — Inert materials such as wood and stone will be stored outside and will likely be covered with tarps or plastic, but are not pollutant sources and are not covered by the permit. Chemicals and petroleum products will �be stored within the construction trailer or storage shed. Cement and mortar bags (if not contained in a vehicle or storage shed) will be completely covered with plastic to avoid contact with precipitation. Vehicle and equipment maintenance and fueling — YES — Vehicle maintenance and fueling will take place in the existing parking lot off of Kansas Drive (a minimum of 50' away from the existing inlet in the southeast corner of the site) No fuel will be stored on site; a fuel truck will deliver fuel directly to equipment as needed. The largest risk to stormwater with this operation is pollutants being spilled in the existing asphalt. Absorbent (kitty litter) will be available on site and applied on any spill immediately and the dry material disposed of properly and legally. Significant dust or particulate generating processes — NO — The area of heavy construction is very limited and none of the operations are expected .to generate significant dust. As previously mentioned, over half the site is covered by an existing asphalt parking lot. If significant dust is generated during construction, a water truck will be available on site at all times or an acceptable onsite water source will be established. The disturbed ground will be watered as needed to control dust from leaving the site. Routine maintenance activities involving fertilizers, pesticides, detergents, fuels, solvents, oils, etc. — YES — Fertilizers and pesticides will not be, used. Any cleaning or maintenance of small equipment will be required to be done within a containment device (horse trough or small "kiddy pool" and the liquid disposed of properly and legally. On -site waste management — YES — The multi -family building and site construction (concrete walks, underground utilities) will result in construction waste. A dumpster for trash and a dumpster for bulk recycling will be on the site. Waste will be hauled to the dumpsters by hand or in loaders. Dumpsters will be hauled off as needed. Dumpsters shall be located a minimum of 50 feet away from the proposed rain gardens and the existing inlet in the southeast corner of the site. No construction waste will be left outside overnight. No construction debris (including broken concrete) may be buried on the site. Concrete truck/equipment washing — YES — A concrete washout will be provided on site. This will be used for trucks and for any masonry / concrete tools. The concrete washout shall be located a minimum of 50 feet away from the proposed rain gardens and existing inlet in the southeast corner of the site. Dedicated asphalt of concrete batch plants — NO — None on this project. H ' 12) Non-structural waste sources such as worker trash and portable toilets — YES —Trash dumpster will be available for worker's trash and .will be ' located near the construction trailer. Portable toilets will be on site near the construction trailer. All portable toilets and trash dumpsters shall be located a minimum of 50 feet away from the proposed rain gardens and the ' existing inlet in the southeast corner of the site. All portable toilets will be staked to the ground in order to prevent tipping. ' 13) Other areas where potential spills can occur — NO — The above 12 items are adequate for the anticipated construction process. ' CONTRACTOR TO UPDATED THE ABOVE INFORMATION WITH EXACT LOCATIONS OF THE CONSTRUCTION TRAILER, VEHICLE TRACKING PAD, CONCRETE WASHOUT, DUMPSTERS, AND PORTABLE TOILETS PRIOR TO tCOMMENCEMENT OF CONSTRUCTION AND UPDATED AS NECESSARY THROUGHOUT THE CONSTRUCTION SEQUENCE. ' 5. FINAL STABILIZATION AND LONG TERM STORMWATER MANAGEMENT ' Long-term erosion control for this site will be the established vegetative cover, landscaping and xeriscaping along with the completed site improvements (pavement and ' buildings). Final stabilization shall be considered achieved once all proposed site improvements are in place and all vegetation is established. Vegetation shall not be ' considered established until a ground cover is achieved which is demonstrated to be mature enough to control soil erosion (typically 70% of the original vegetative cover). Areas controlled by grass sod will be considered established upon the completion of the ' sod installation. t 11 6. INSPECTION AND MAINTENANCE ■ Site inspections will be performed to effectively address maintenance, repair, and adequacy of BMPs. The site inspections will be performed by the SWMP Administrator ' or his designee a minimum of once every fourteen (14) calendar days on active construction sites and within 24 hours after a significant storm event (event causing ' erosion). As part of the site inspections the inspector will keep documentation of all inspections and BMP maintenance, including updated Site Maps indicating new BMPs or the removal of BMPs since the previous inspection. Blank Site Maps will be utilized and will be redlined by the SWMP Administrator throughout construction to note all BMPs, pollutant sources, storage locations, etc. Any maintenance, repair, or necessary installation of BMPs that are noted during the ' inspection must begin immediately. The modifications, shall be noted in the SWMP and the action taken as a result of the inspection shall be noted and certified on or attached to ' the original inspection report (date and time that the repair or change was started and finished and a certification that it was done properly). ' 6.1. City of Fort Collins Standard Erosion and Sediment Control Notes 1) The City Stormwater Department erosion control inspector must be notified at ' least 24 hours prior to any construction on this site. ' 2) All required BMPs shall be installed prior to any land disturbing activity (stockpiling, stripping, grading, etc.). All of their required erosion control ' measures shall be installed at the appropriate time in the construction sequence as indicated in the approved project schedule, construction plans, and erosion control report. 3) Pre -disturbance vegetation shall be protected and retained wherever possible. Removal or disturbance of existing vegetation shall be limited to the area required for immediate construction operations, and for the shortest practical period of time. 4) All soils exposed during land disturbing activity (stripping, grading, utility installations, stockpiling, filling, etc.) shall be kept in a roughened condition by ripping or disking along land contours until mulch, vegetation, or other permanent 12 Q erosion control is installed. No soils in areas outside project street rights of way shall remain exposed by land disturbing activity for more than thirty (30) days before required temporary or permanent erosion control (e.g. seed/mulch, landscaping, etc.) is installed, unless otherwise approved by the Stormwater Department. ' 5) The property must be watered and maintained at all times during construction activities so as to prevent wind -caused erosion. All land disturbing activities shall be immediately discontinued when fugitive dust impacts adjacent properties, as ' determined by the City Engineering Department. 6) All temporary (structural) erosion control measures must be inspected and repaired or reconstructed as necessary after each runoff event and every 14 days in order to assure continued performance of their intended function. All retained sediments, particularly those on paved roadway surfaces, shall be removed and disposed of in a manner and location so as not to cause their release into any drainage way. 7) No stockpile shall exceed ten (10) feet in height. All soil stockpiles shall be protected from sediment transport by surface roughening, watering, and perimeter silt fencing. Any soil stockpile remaining after 30 days shall be seeded and mulched. 8) City Ordinance prohibits the tracking, dropping, or depositing of soils or any other material onto city streets by or from any vehicle. Any inadvertent deposited material shall be cleaned immediately by the contractor. 13 6.2. City of Fort Collins Erosion Control Security Calculations The cost of erosion control for the site was compared to the cost to reseed the entire site and the greater cost was used to establish the erosion control escrow amount. The cost to reseed the site is estimated at $1,140.00. Using a multiplier of 1.5 the erosion control escrow amount would be $1,710.00. The site erosion control cost is estimated at $3,770.00. Using a multiplier of 1.5 the erosion control escrow amount would be $5,655.00. The larger sum of the Erosion Control cost and the Reseeding cost shall be used for the escrow account. Therefore, the Erosion Control Escrow amount is $5,655.00. See Table 6.1 for a break -down of the costs associated with seeding and erosion control. ■ Table 6.1: Erosion Control Cost Estimate ITEM QUANTITY UNIT COST/UNIT TOTAL COST Silt Fence 510 LF $ 2.00 $ 1,020.00 Inlet Protection — Wattles IP 3 EA $ 150.00 $ 450.00 Concrete Washout CW 1 EA $ 800.00 $ 800.00 Vehicle Tracking Pad VTC 1 EA $ 1,500.00 $ 1,500.00 Subtotal Contingency (50%) Total $ 3,770.00 $ 1,885.00 $ 5,655.00 CITY RESEEDING COST Reseed/Mulch 0.76 ACRE $ 1,500.00 $ 1,140.00 Subtotal Contingency (50%) Total $ 1,140.00 $ 570.00 $ 1,710.00 CALCULATED EROSION CONTROL ESCROW AMOUNT $5,655.00 Note: Minimum Escrow Amount is $3,000 i 14 7. SWMP IMPLIMENTATION _■ It is the responsibility of the contractor to operate and maintain all facilities and systems of treatment and control which are installed to achieve compliance with the conditions of ' the permit. This includes effective performance, adequate funding, adequate staffing and training, etc. (see permit). All personnel on the construction site who will be in a position to affect or be affected by ' the SWMP shall be trained prior to beginning work. These individuals will be given general orientation information regarding the project and SWMP, shown where the SWMP is physically located, the SWMP will be explained to them and available for their ' review, and the enforcement policy will be reviewed. After this training, a certification that the employee or subcontractor's employee is familiar with the document and its procedures will be signed. Copies of these certifications shall be included in the SWMP notebook Appendix. Throughout the construction, as a part of a weekly safety meeting, the SWMP will be reviewed with all attendees and any incidents discussed. All attendees shall be logged. 15 APPENDIX A-BMP DETAILS FILTER FABRIC STEEL OR WOOD POST —t. BACK FILLED TRENCH —III F7IIL77TER FABRIC POSACH SECURELY TO STEEL OR WOOD POST COMPACTED BACK FILL RUNOFF _I-1I1=1I1=1I1-III I- APPROXIMATELY I—j I-1 I —III_ 4 IN. X 4 IN. TRENCH �-III-III-III=1 III=1 I 1-1I1=1 11- 1 011-I I I-1II- 1=1I1=1II-I 11=1 'MIN 1111111I1111111111111 IIIIIIIIIIIII11111111111II1 11111TIII II =1 =1 I =1 =1 I El I =1 I I=1 11 -III- III -III -III -_III -II I -III I I-II1=1I1-1 11-1 gill -I SECTION VIEW GENERAL NOTES: 1. THE MAXIMUM TRIBUTARY AREA IS LIMITED TO 0.25 ACRES PER 100 FEET OF FENCE. 2. INSPECT AND REPAIR FENCE AFTER EACH STORM EVENT. REMOVE SEDIMENT WHEN ONE HALF THE HEIGHT OF THE FENCE HAS BEEN FILLED. REMOVED SEDIMENT SHALL BE DEPOSITED IN AN AREA TRIBUTARY TO A SEDIMENT BASIN OR OTHER FILTERING MEASURE. SILT FENCE CITY OF FORT COLLINS STORMWATER APPROVED. DETAIL UTILITIES CONSTRUCTION DETAILS DATE: 12/27/00 D- 28 of Fort Collins DRAWN BY: NBJ LIMIT OF BERM �PF - PF PF PF PF FENCE a (PLASTIC) F-- 9' MIN. I I a 4' MIN. a A 15'MIN. EXCAVATED AND CONTAINMENT AREA a PF RAMP 3:1 PF J TRUCK ACCESS PLAN VIEW 24' TEMPORARY BERM SIGN CONCRETE 18" MIN. 2:1 (TYP.) WASHOUT FENCE 5'MIN. EXCAVATED AREA EXISTING GROUND _ _ 18� MAXIMUM STORAGE IS 2/3 OF VOLUME AREA SECTION A -A A NOTES: 1. EROSION BALES MAY BE USED AS AN ALTERNATIVE FOR THE BERM. 2. A FENCE (PLASTIC) CONFORMING TO SUBSECTION 607.02 SHALL BE INSTALLED AROUND THE CONCRETE WASHOUT AREA, EXCEPT AT THE OPENING. 3. THE CONCRETE WASHOUT SIGN SHALL HAVE LETTERS AT LEAST 3 INCHES HIGH AND CONFORM TO SUBSECTION 630.02. CONCRETE WASHOUT STRUCTURE - -I-EXISTING GROUND i EXISTING PAVEMENT � PLAN VIEW SHALL EXTEND FULL WIDTH OF INGRESS AND EGRESS OPERATION. EXISTING 70' MIN. GROUND 6 ) MIN. EXISTING GEOTEXTILL PAVEMENT EROSION CONTROL (DEPTH VARIES) (CLASS 2) ELEVATION SECTION 12' MIN. EXISTING GROUND 6" MIN. i GEOTEXTILE EROSION CONTROL (CLASS 2) SECTION B-B NOTES: 1. AGGREGATE FOR THE CONSTRUCTION ENTRANCE SHALL CONFORM TO SUBSECTION 208.02 (K). 2. THE CONTRACTOR SHALL PROTECT CURB AND GUTTER THAT CROSSES THE ENTRANCE FROM DAMAGE. PROTECTION OF THE CURB AND GUTTER WILL NOT BE PAID FOR SEPARATELY, BUT SHALL BE INCLUDED IN THE WORK. VEHICLE TRACKING PAD Computer File Information � � Sheet Revisions Colorado Department of Transportation 4201 East Arkansas Avenue -- )O% Denver, (303rado 80222 Phone: (303) 757-9083 Phone: 6[s�fS"rblsi�pTTtG Fox: (303) 757-9820 Project Development Branch DD/LTA TEMPORARY EROSION CONTROL STANDARD PLAN NO. Creation Date: 06/08/10 Initials: DD Date: Comments Lost Modification Date: 08/26/10 Initials: LTA 08/26/10 Revised to meet new quality water unlit standards. 1� �T p " -208-1 Full Path: www.dot.state.co.us/Design5upport/ File Name: 2080101012.d n g g Revised sheets 1-7. Sheet No. I of 12 Issued By: Project Development Branch on July 04, 2006 CAD Ver.: Micro Station V8 Scale: Not to Scale Units: English Added sheets 8-12. A A iE TWO WOOD STAKES AT ALL 0S10N LOG ENDS OR JOINTS USE A STAKE EVERY 24" AND CONTINUE ALTERNATE ORIENTATION THROUGHOUT THE LENGTH OF THE EROSION LOG EROSION LOG PLAN VIEW APPROxTMAKES AT TO EACH or a WETLANDS OR FEATURES F (TYR) REQUIIRING PROTECTION l� I SECTION A -A TYPICAL STAKE INSTALLATION NOTES 1. EROSION LOGS SHALL BE EMBEDDED 2 INCHES INTO THE SOIL. 2, STAKES SHALL BE EMBEDDED TO A MINIMUM DEPTH OF 12 INCHES. 3. EROSION LOGS SHALL BE TIGHTLY ABUTTED WITH NO GAPS. o B LL ❑ B L1/\� FLOW � FLOW %YEROSIONLO(G n NT A �J ❑ o ❑ PLAN VIEW PLAN VIEW POINT A POINT A FLOW POINT B POINTS A SHALL BE HIGHER THAN POINT B. SECTION B-B NOTE: LOCATE EROSION LOGS AT THE OUTSIDE EDGE OF THE CONCRETE APRON. EROSION LOG FILTER AT DROP INLET EROSION LOG APPLICATIONS ELEVATION EROSION LOG DITCH INSTALLATION Computer File Information [ � � Sheet Revisions Colorado Department of Transportation 4201 East Arkansas Avenue -- 1(1 % Denver, Colorado 80222 Phone: (303) 757-9083 Raara«r7=09rm Fax: (303) 757-9820 Project Development Branch DD/LTA TEMPORARY EROSION CONTROL STANDARD PLAN NO. Creation Date: 06/08/10 Initials: DD Date: Comments Lost Modification Dote: 08/26/10 Initials: LTA 08/26/10 Revised to meet new quality water unlit standards. M-208-1 Full Path: www.dot.st ate.co.us/De sign5upport/ Drawing File Name: 2080102012.dgn Revised sheets 1-7. Sheet No. 2 of 12 Issued By: Project Development Branch on July 04, 2006 CAD Ver.: Micro Station V8 Scale: Not to Scale Units: English Added sheets 8-12. GRAVEL BAG SHALL BE PLACED TIGHTLY AGAINST CURB FACE AND SHALL BE PLACED 5' UPSTREAM FROM THE INLET OPENING 4' MIN. CURB CURB INLET --4' MIN. 5' IN.—] FLOW GUTTER GRAVEL BAG PLAN VIEW L>10' 3 ISOMETRIC VIEW GUTTER CURB (:RAVFI RA(: GRAVEL BAGS SHALL BE TIGHTLY ABUTTED WITH NO GAPS (TYP.) 1 o�A �j FLOW FLOW I o� PLAN VIEW FOR MULTIPLE GRAVEL GRAVEL BAG CURB CHECK BAGS GRAVEL BAG APPLICATIONS Computer File Information R-X T2—X X � C= Sheet Revisions Colorado ar De tment of Transportation p p 4201 East Arkansas Avenue 1UT Denver, Colorado 80222 Phone:(303) 757-9083 RflhIR Fox: (303) 757-9820 Project Development Branch DD/LTA Creation Date: 07/04/06 Initials: DD Date: Comments Last Modification Dote: 08/26/10 Initials: LTA 08/26/10 Revised to meet new water quality standards. Full Path: www.dot.state.co.us/DesignSupport/ DrawingFile Name: 2080106012.d n 9 Revised sheets 1-7. CAD Ver.: MicroStation V8 Scale: Not to Scale Units: English -1 Added sheets 82. PLAN VIEW A INLET'I NOTE: LOCATE GRAVEL BAGS 1 AT THE OUTSIDE EDGE OF THE CONCRETE APRON. P ° SECTION A -A GRAVEL BAG FILTER AT DROP INLET TEMPORARY STANDARD PLAN NO. EROSION CONTROL M-208-1 Issued By: Project Development Branch on July 04, 2006 Sheet No. 6 of 12 APPENDIX B-EROSION CONTROL PLAN AND SITE MAP. 0 ----------- __a- -� tf f i�f I I r - - - - - - - - - -1 I I I I I y ._ J %, I Ila I I I 1 I I Ira \ I I _J � I I L01 I eo an I I I I I I I I I czls2zER 491, / I I I I I I II � � � // � / / R� /�•'' �„IZA� I I III FF=4930.15 I '{ I I % 11 I i I t t l 1 l� I ARN roe � _Mmmml ���i���� LEGEND EIJ STING MINORCONTWR E%ISNNG MANJR COMOUR PRCPOSED MINOR CONTOUR PROPOSEDMAIORCONTWR PROPOSED DPNNAGE 6 IN DIVIDE I PROPOSm gME TlO OIF OVER4ND Fl.OW CONCRETE WASHOUT vETuc.a TRACRNG coNmD� S TFENCE WAT INIET PROTECT _____ Elr____l_I _ _I - I / / I +pI________________T I I I _ _ // / � / / � ��/ NOTES: rl I I THE1. CONCRETE WASHOUT LOCATION TO BE DETERMINED IN THE FIELD. II I 2 I I 1 I I as DRAINAGE SUMMARY TABLE I 't - / / - - �- - - - - - - CALL UTIUTY N07FICATION CENTER OF COLORADO I / / 4I I I / I a - F -- \ \ ___________ ____________________ _______ ---_-- \ r1 L I E-'1 I- -I_I I I --- F- I _ I I FI_II r- I 1� _ L IX+onDt q+o9nDt auxucE I r1 s11NICNRE ____''_____ Ft (do) (do) eE00AfU(s Design Point Trtbuwy Sub -basin Ams ac C (2) C (to) C (100) Io (2) In to (10) min tc (100) min D12nD do 101 0.89 OAS 0.46 017 127 12.7 12.7 0.8 U 3.6 Iota 0.08 0.53 0.53 087 50 50 6.0 OA 01 0.6 102 0AI 0.58 0.98 (173 5.3 5.3 5.0 1.0 1.7 4.4 103 D.24 082 0,62 0,77 12.2 12.2 9.6 0.3 0.5 1.5 104 0.99 0 89 0 t0 0.88 ell DALL 2-eU4NE55 DA5 N ADVANCE IIEFN YDU NG. GRACE, DTI E%CAVATE FM i YMRNG V I RGIWND YEYRER UTL71E5. U It a u Z 00 w m 1ri 1=0m O Z N�o LL Q j a O N °w i a00 5 0 0Um IL U w y a Q J J w Z f Uj0 S'jUa O I, APPENDIX C-CONSTRUCTION SEQUENCE R G O N a E v O v n 0 U N a c 0 J C QI O C U � y � N m O V �1 C j O n C O � y H U 0 c O c 0 c 70 O « to C Y to C t Y m C 3 O C E O } £ O C E O Y E O C E O Y E 0 Q ` o C ° b N c° C N m N V fd m C ° N O C O N O m C 00 m A m N N _F a Y c� c C G 'a a N O 'O w n 0 L N v 0 C o w > ° E a A N O C N M CO w co iA 5 p u r L �n . 3 d c u v m 3 LL LL E v in N N y E ° '^ N C G m . °" > R m > a E r t `u N E a O w .. v O APPENDIX D-SOIL INFORMATION S | ( ! E � >_ e ,_ ,_ __ _ _ __ MSS.a | ( § / / ( � , $ \� ( §( G S § - k $ ■ § # � � ■ $p 2 t @ f I .- ! zQ ) § o z _ \i PIS O° N C =pp_ 2 ° O O pp N m C o N c WN N fo�pp U N U A @ o 10 a Q m .O N .- 1 > m o d.0 m@ 3 c O C (( C U Vpp U W Z 7° y C m✓ o E C ° w mjo N CuN �O U N NZ aQ 0 OL E U am C 0° � Z L a@ y C NZ O E n Q m m N r�Eo rLoU3 m 0 E T yO (0 Z�aUO ydN °'Eo CN E ama mV mv 75Q <" m y E y W °aa C N asm p c m °iyo mQv _ N O >O°C Lo m L m J mO Om T Nam 15 um Eo U NZo Ea Z O. O m C m n m 0 O E M O y @ 1i E dCA yo N u N «J -a _ U)y0CVwY� J d E CL L C y m E ao A i a z� a � Q $c m= d O'N-"vv £p m E O1Er >.�.cd dv m o'rnm c N o m `—' {0 � N16 d O A E O J 2 o c mF' Jo ° ac TE 0 �� Etna; 3� m H �� Q@ m t c as N ul to m��u m m m is T ° 'O C EcmJc O m y =o 0 '` 44) Q O- aci @ ofO:D2 L O m cyfi mh EUv m'G��2 am U)m Eo' y 0CL m m JOy La+m= mm mm oao omo a°�:°du @oNa� N> :cm -2 'oo -1° o— `o ='� mo mEmE LO r $ w E CL $ a E to U a'v a° F co �n cn o N f u o N m M c y @ n o a m m � U c m o a m rn Q > o o n N c m c m E = m @ N o o a o K t tl O O N fn r 0 J L 0 O co b to O K m = 7 O ' @ Q Z @ m t O O W @ 0 3 r m W J a. Q Q c ° > m CO m @ a V% In o a :7 a w E m m 'o 'n. O c W - o to _� Q O a 2 a n i 2 d ,O 3 N O y m >. m a L '° 75 m n t U m Q` WO N` cno m m o u 9 c9 V @ m U m ai Q O X C = C>O 0)i m i m N m V yU) 8 n C N to _;:;. ca Z tSoil Map—Larimer County Area. Colorado Map Unit Legend Larimer County Area, Colorado (CO644) ' Map Unit Symbol Map Unit Name Acres in AOI The Colony at Rigden Farm, Lot 2 Percent of AOI 73 Nunn clay loam, 0 to 1 percent 1 61 100.0% slopes Totals for Area of Interest 1.6 1 100.0% 1 I SW, Natural Resources Conservation Service Web Soil Survey National Cooperative Soil Survey 8/10/2015 Page 3 of 3 O A O O U � N J C 0 O U LL C m CD E � J 7 C O 0 U U om N L U H O O v` T M 2Z.07 z 0 P: � � 0 / IL « � 0 z w 0 q � aZ �)kZf2�\t_ �§` a ��k) (A ƒ/ f � 04\ 0CD )§) 2 cc r m;f;q §\ CO !� •!$ { I G - f %i7 1 �\ E J/\ 2 i ƒ\ } #-m 5 k# | » �E ; [&\a ff2 %Q 0M ! §� ; w |\(0) m )/k �� �\ 0- �� °�E ] 7 ƒ §ƒ{[, _= C0 f {2; to §)2\k CD {_ m > � \ � 7/@ _ - f Atcc 2;) k ak ! [ : ...�! !\=f2 \§ $ - - {® m ¥! {{ 2 i (C | -f {#Q§§ fQc12 ,_ �\ § / ■; ® ® _ a ° §/ /( }� L UL§ jkk ƒ{)k) /) 3' __ 30 - aA w{E■ r,I% - ( f m o ) ! I]£_ o % - o a c z m! , ■ o ❑ E / / { � < \ k k! k 2 ƒ, 2, S o S n\ /} $ 2 0/ e Im < 2 m 7 \ 2 o I ■ ■ ■ ■ 2 a0. ( m Hydrologic Soil Group—Larimer County Area, Colorado The Colony at Rigden Farm, Lot 2 i ' Hydrologic Soil Group Hydrologic Soil Group— Summary by Map Unit — Larimer County Area, Colorado (CO644) Map unit symbol Map unit name Rating Acres in AOI Percent of AOI 1 73 Nunn clay loam, 0 to 1 C - 1.6 100.0% percent slopes Totals for Area of Interest 1.6 100.0% ' Description Hydrologic soil groups are based on estimates of runoff potential. Soils are assigned to one of four groups according to the rate of water infiltration when the soils are not protected by vegetation, are thoroughly wet, and receive precipitation from long -duration storms. The soils in the United States are assigned to four groups (A, B. C. and D) and three dual classes (A/D, B/D, and C/D). The groups are defined as follows: Group A. 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 B. Soils having a moderate infiltration rate when thoroughly wet. These ' 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. Group C. Soils having a slow infiltration rate when thoroughly wet. These consist chiefly of soils having a layer that impedes the downward movement of water or soils of moderately fine texture or fine texture. These soils have a slow rate of water transmission. Group D. Soils having a very slow infiltration rate (high runoff potential) when thoroughly wet. These consist chiefly of clays that have a high shrink -swell potential, soils that have a high water table, soils that have a claypan 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. If a soil is assigned to a dual hydrologic group (A/D, B/D, or C/D), the first letter is for drained areas and the second is for undrained areas. Only the soils that in their natural condition are in group D are assigned to dual classes. Rating Options Aggregation Method: Dominant Condition Component Percent Cutoff: None Specified I SDA Natural Resources Web Soil Survey 8/10/2015 Conservation Service National Cooperative Soil Survey Page 3 of 4 d Hydrologic Soil Group—Larimer County Area, Colorado The Colony at Rigden Farm, Lot 2 Tie -break Rule: Higher Lsm Natural Resources Web Soil Survey 8/10/2015 Conservation Service National Cooperative Soil Survey Page 4 of 4 M SS.T oSOT F a L- Mzz ZOT Z 2 n ylr d OLL99W 09L99VV OSLBR" OVL98VV OEL99VV OZL88VV OTL98" Was" 06988" 089OR" OL988WQ Un Cl) XI MSS.I e50[ O O N hhh 0 O e m m W OJ a � S R a n 1� a P a �s gg a T m U) y O m e o a ) O O N � m O m x rn TFyB pQ tl m �tttla � 6 m ( w c 9 0 0 y v a a m R m w R m o Z Z U f� a 0 Mzz oSOT OLL99bb 091e9er OS49ROV Ott98VV OCL99w OZt8R" OTI9 OOL88VV 069esbo 09998" 00880V I z In m z O Q Q' 0 z Ca i 0 z w 0 w J a Q m o o Cd ° _ CI O m T w p N m o r m m m 1 L 3 I w p 7 C c U UUm E Z mY y 5p a) N p 0. E w p - E my C O yN3 1 m N m ���° y mCN ° a o am mm e co o p E a ¢y d YT Y E m mOC t° avd Uo E" 0' ° 4) ) z ¢ N y °`p, aw m y o m 0m U) ¢�N CL E3 m o 4) °�C tdp3 Umom�aw Oc ¢ �ay) >Lc 0 mu 03 d c y0 Cm , O j pN a E , m m c C m y v°md Eo OmOm 0ED w c m m (A d m aOL v 4)pm . m w90 m p m m o m :s wm 0 4)a�(1 o cd 0) ca >4)3L m E a E°am m m m m ¢ 0 . w m 0a p m EcEr £ ,2 > �aGmy ym t mymm cv N ornm ¢y 7>N> o '5vMm� )£.o � ;0 cm 5*0 « mm cM Lao c E � = CL -0, mE E m ww w �7 tnm E (D oa m m ip0pw c m m '0 mm m 700 p m p ad4?mp m O w� w> t d -Z 0 7 _m O m rn t p m w 3 w€aw 'aE U) C) m �a'v¢0 F L �U) U)`O p ON 1 oEo n m y w m c m L o w 3 a A C c y y O 0 w � o° a w L' O `o (0 m � A G ❑ ❑ ❑ ❑ ❑ El ❑ GI ■ ❑ ~ i m a v d a m � m a y m O c O c c 0 o _ _ O Q O °rn T p O p C m N p 0 c p a Q 01 O) e- N M C m Z p c N C) m Z Ot C YAM m z Wind Erodibility Group—Larimer County Area, Colorado The Colony at Rigden Farm, Lot 2 Wind Erodibility Group Wind Erodibility Group— Summary by Map Unit — Larimer County Area, Colorado (CO644) Map unit symbol Map unit name Rating Acres in AOI Percent of AOI 73 Nunn clay loam, 0 to 1 6 1.6 100.0% percent slopes Totals for Area of Interest 1.6 100.0% Description A wind erodibility group (WEG) consists of soils that have similar properties affecting their susceptibility to wind erosion in cultivated areas. The soils assigned to group 1 are the most susceptible to wind erosion, and those assigned to group 8 are the least susceptible. Rating Options Aggregation Method., Dominant Condition Component Percent Cutoff. None Specified Tie -break Rule: Lower USDA Natural Resources Web Soil Survey 8/10/2015 Conservation Service National Cooperative Soil Survey Page 3 of 3 M SS eSOT 0 n v M.ZZ SO[ z z OLLBBbO 09L88b7 OSZBBW ObLBBbb OELBBhb OZL89" OILBB" OOLBB47 06988bb 089RB" OL989" 'n M w MSS.1 oS01 O O n N � IL a g Q /• n Of i a ca m v a m � 0 CO o ) d ) o 3U N c Z a a i p P � Q H 5 Q R - M-1 7 y —_-- -._ _ -1 W W O O W m a is Z U mzz GOT OLLBBDb 09LBBW OSL881,7 ODLBBbb OEL88w OZLB8Vb OILBBbD OOCBBD9 06986bC 089080V OC988bb z z y � N O m `o 0 U �p N 0 Q J 0 m O LL U c E rn l0 � J � IT :o c U)o d0 0 d >L L H O U m LL Y m d 0 y s r a C " 0, m > 0 U " drm 0 v CDy y°cm U CL y m E N E ' m'D 'E yE 0) E 'a � m u O m m 04 ` U CD °w ai m a m m —0 m c m0cr U c mE y m" Zo a U`m- o0 Q uy � E 3 0 H O B o y 2 a d -p m Z U o v u E 3 Y O, Y L a c0 n. N v t0ii Q m N 3 � L Q y C C OQ m Naoc E UOw mO.L CO QN m 0. C me 0 o u m L d "E'na m y" 0 �0 U c_" O °10co 0 m a �m s m @ rn o d "v a Q.> > Y`000 m =3 � °Ti-om � 3 O �U a g mvu y U. g a c'm Ut o O yam T G 1 U Zv°Omit oa O Q 7 Uc " m n T a N(oEL Z C O'O T'O Vl a m re L 70 (n N rN N� E L2 v y NO N> d O N >N 2 N E m N JV CO 0 m J y rE oy dEcam a Zo .0Z 0" o �� rn NUmo CL i�ID m 00) d7 m E 0rn c o a m m �1 OO'O T a1d`mO�0 Z 'too M00 cC c E � y 0 � Q y mammaE E m2020(Do cc E � om Q ao m vc Lvo oO 4)4) Nt>1 N U`a— U) E ". O NO 0) a �m c' aE Od NwE_3 dEmE FoO.Eo t 2nvQcm o U)U) U O " � U 3 t a m m m m 0 m �° o a C 0 0 CL 0 d d 0 � m N D @ @ Z w c c 0 0 W d ry C G � J : .o N N (�yy M } Q 1 ( 1l 0 ❑ ❑ El ❑ ❑ ❑ ❑ ❑ ❑ ❑ © 0 ❑ \ 0 V% d N 3 G a _ o Q m m G o 0z Q O O T d " m N 0 Y Q O LL 0 O O N N N m m O V u �Z C O O O N A❑ M `O ® 11 El 1111O 11J Q F \ F a N �m � O m 0 m 0„ .0a ma m c 0 m Z III II K Factor, Whole Soil—Larimer County Area, Colorado The Colony at Rigden Farm, Lot 2 II K Factor, Whole Soil K Factor, Whole Soil— Summary by Map Unit — Larimer County Area, Colorado (CO644) Map unit symbol Map unit name Rating Acres in AOI Percent of AOI 73 Nunn clay loam, 0 to 1 .32 1.6 100.0% percent slopes Totals for Area of Interest Description 1.6 100.0% Erosion factor K indicates the susceptibility of a soil to sheet and rill erosion by water. Factor K is one of six factors used in the Universal Soil Loss Equation (USLE) and the Revised Universal Soil Loss Equation (RUSLE) to predict the average annual rate of soil loss by sheet and rill erosion in tons per acre per year. The estimates are based primarily on percentage of silt, sand, and organic matter and on soil structure and saturated hydraulic conductivity (Ksat). Values of K range from 0.02 to 0.69. Other factors being equal, the higher the value, the more susceptible the soil is to sheet and rill erosion by water. "Erosion factor Kw (whole soil)" indicates the erodibility of the whole soil. The estimates are modified by the presence of rock fragments. Rating Options Aggregation Method: Dominant Condition Component Percent Cutoff: None Specified Tie -break Rule: Higher Layer Options (Horizon Aggregation Method): Surface Layer (Not applicable) ..I- Natural Resources 011111111111111111 Conservation Service Web Soil Survey National Cooperative Soil Survey 8/ 10/2015 Page 3 of 3