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pitkin.eh.264503201004 (2004)
Permit # 04002 Pitk,n County Environmental Health Departn Rit. Peri for an Individual Sewage Disposal S am 0405 ,dstle Creek Road, Suite 10, Aspen, Colorado b1611 Phone 970-920-5070 / FAX 970-920-5077 Parcel ID # 2645-032-01-004 Type of permit New(X ) Repair( ) Addition/Remodel to House( ) Name of Owner Mr. & Mrs. J. William Sharman Street Address 201 Capitc Property legal description Size of lot 1.3 acres Water source Private well # of bedrooms in house Creek Road, Snowmass, CO Lot 4. Capitol Woods Total square footage of the house 1992 # of offices, lofts & similar sized rooms in house Caretaker unit Lot 6 Total square footage of the caretaker unit # of bedrooms in caretaker unit # of offices, lofts & similar sized rooms in caretaker unit Designed for what # rooms (list) 3 bedrooms + 1 bdrm in proposed CDU for lot 6 (document easement) = 4bdrms Permit information Designed by Sopris Engineering Mailing Address 502 Main Street, Suite A3, Carbondale, CO 81623 Perc rate N/a Profile hole depth 7 ft Depth to groundwater or bedrock 10/03 6 ft groundwater Minimum Septic tank capacity 1312 gallons Minimum Absorption area 1105 sq ft. Comments Septic permit approved per compliance with the engineer design and specifications dated August 25, 2003. Any changes must be approved by this department and the design engineer prior to them being made. Minimum horizontal distances between components of the system and physical features shall conform to the Pitkin County ISDS regulations. There must be a minimum 104 foot separation between the field and any drinking water sources in the area (wells, and spring). Prior to any installation„ groundwater levels during a time of high runoff (late spring/early summer) must be done in the area of the absorption beds. This department must be called to confirm groundwater levels. This system will consist of one 1500 gallon, two-compartment tank with a pump in the second compartment. 2 sand filter beds will be constructed per details on the engineer design pending confirmation of high groundwater levels. The sand must conform to the intent of Section 12-5 of the Pitkin County ISDS regulations and an invoice to document the sand material must be submitted. This department does not endorse any brand of products. This permit must be kept on-site during installation. The engineer must do a final inspection of the installation and submit an as -built letter to this department. This department must also be called for an inspection with a minimum of 48 hours advanced notice. Permit approved by: I�� f'�� `��:1� Date: Plans and specifications of the proposed individual sewage disposal system have been reviewed and are considered satisfactory. Permission is hereby granted to the owner or the agent to perform the work indicated in accordance with the Pitkin County ISDS Regulation in effect at the time of issue. This permit becomes invalid 6 months from the date that the permit was issued unless system construction has commenced or an extension has been approved in writing by the Department. As -built drawings must be included with this permit before the final approval will be issued. Installer: Final approval: �i� �' Date: `h PITKIN COUNTY ENVIRONMENTAL HEALTH DEPARTMENT APPLICATION FOR INDIVIDUAL SEWAGE DISPOSAL SYSTEM 0405 Castle Creek Road, Suite 10, Aspen Colorado 81611 Phone (970) 920-5070 Fax (970) 920-5077 Name of OWNER mc, +Nirl- Owner's Mailing Address City, State, Zip Business Phone: ► • 2 Z Home Phone: ZZ E-mail Address: Primary Contact Person (all communication regarding this permit will go through this person) Name Com an !2 Contact Mailing Address City, State, Zi Z Business Phone Cell Phone : Fax: -Pskq,2E-mail Address: h Parcel ID # (available from assessor's office at 920-5160 or at www.pitkinassessor.org) C Street address of property �k CCc,pI�Zn� ( / jyoptZaaQ L, 6cv3v�n�FvS Legal Description: Lot ,Block Filing Subdivision l�tQij,, .hJb� Size of lot: ' ' acres. Type of„propose structure: FCL,—..,�S,Q 10 5 rlu C; •.E� sr r1 iol-A Total square feet of house ?.DCj Z # of bedrooms (potential) in house 3 +�� Caretaker Unit: Attached ( Total area(sq. ft.) of unit Detached ( ----) # of bedrooms (potential) in caretaker unit Permit is for: New Home (,K) Repair due to failure ( ) Remodel/Addition ( ) Emergency use ( ) Water: Private well ( p(') Spring ( ) Stream ( ) Community/Public Water System ( ) If community system: Name of system The fee for a ISDS application is $600 for a permit that takes 6 hours or less for the department to approve. If approval takes longer than 6 hours, a rate of $100 per hour will be charged. The maximum fee is $1000. The basic fee of $600 is due at the time of application. The remainder, if any, will be due in two stages: first, at the time of issuance of the ISDS permit; second, before final approval of the ISDS permit. Application for an individual sewage disposal system is hereby submitted. I hereby certify that the above information is true and accurate and that I have provided true and accurate information on locations of all existing and proposed wells, contour intervals, buildings, property lines, ditches, slopes, waterlines, springs, suction or irrigation lines, drinking water cisterns, drain tiles, irrigation ditches, lakes, water courses, streams, floodplains, dry gulches, and existing septic systems. I hereby certify that any such features not shown on attached site map are not present. Issuance of the permit does not imply the approval of any other permit required for construction pursuant to Pitkin County codes. No construction may be undertaken until all approvals and permits have been obtained. The Pitkin County Environmental Health Department, Pitkin County and employees of these agencies will be held harmless should the individual sewage disposal system fail or malfunction. The permit to construct is issued on information submitted by the applicant or his/her representatives. The owner assumes full responsibility in case of failure of the system. Signature of applicanj Date J� q•ogr Received by ( t-, �Z, � Receipt # Date G:\isds\isds applic\isdsapp Rev050103.doc G� t 1 1 (o i vl ASPEN/PITKIN ENVIRONMENTAL HEALTH DEPARTMENT ISDS DESIGN CALCULATIONS vner's Name Parcel ID # )use Size (sq. ft.) (75 gpd, 100 gpd, or 130 gpd) 75 .amber of Bedrooms in Main House 4 .amber of Offices, Libraries, Studies, Similar -sized Rooms in Main House Number of Bedrooms in Detached Caretaker unit Number of Offices, Studies, Similar -sized Rooms in Caretaker Unit (If the caretaker unit is ATTACHED, treat as if part of main house.) Average Daily Waste Flow 600 State Review Required? no Perc Rate (T) Design Flow (Q) = # potential bedrooms X 2 people/bedroom X gpd X 1.75 Q= 1050 Absorption Area (=Q/5 X SQRT perc rate) A = 0 sq. ft. of absorption area required 0 gravelless chamber units without reduction # of Perc Holes Required: 3 1 in every soil type? Spaced uniformly over proposed area? A maximum 30% reduction is allowed for use of deep gravel or gravelless chambered system, only if the lot size and soil conditions are optimal. If a reduction is being proposed, describe why lot size and soil conditions are optimal: A = 0 sq.ft. w/30% bed reduction 0 sq.ft. w/ 50% trench reduction 0 gravelless chamber units 0 gravelless chamber units Type of system: []Absorption trenches []Absorption bed [] Gravelless chambers []Dry well []Seepage Pit []Other (type) Minimum tank capacity 1312.5 gallons SETBACK FROM WELL # of feet = 104 SETBACK FROM POND, STREAM OR IRRIGATION DITCH # of feet = 54 SETBACK FROM DRY GULCH # of feet = 29 Printed on Recycled Paper / F ` �� . � t •�� �� �' ��J`.at r •Mir ..��,� ,�y„� �,I+F�.`^ !�` �'i� ��� � 1�,� '�- _ �7 nom' r� S �"" �' • � c� + „�-=;`,� � �� f� • ,t 1 ?�, ,..:fix �� 3 � . ` y147 low_1 At Y C . 7 - h " 041 jaw • J ... ',�I �d ''r r� 3 "• � ,. '� �_ ! �. Fes„-� ��f *� ` r r ' F�,y` •'' =tea,. x , - i "1 Ew 1 "1 Ew 1 Pitkin County Environmental Health Department Contact Log Sheet Name: Parcel ID#: Address: Date Person Spoken To Co ments / Action to be Taken Initials Time keithmwebster@earthlink.net, sharman To: keithmwebster@earthlink.net From: Carla Block <carlab@ci.aspen.co.us> Subject: sharman Cc: Bcc: Attached: My not from 7/21 say I need... e gra tion report for the sand that was used. l 'also need a final as -built letter from the engineer ( Engineering) Dick Sundeen said he would send me a digital picture of the high groundwater level (with a corresponding date) for our files because part of the condition of the permit being valid was to verify high groundwater during a time of high groundwater or irrigation. + thanks, carla Printed for Carla Block <carlab@ci.aspen.co.us> August 5, 2004, William Sharman C/O Keith Webster P.O. Box 3411 Aspen, Colorado 81612 Carla Block Pitkin County Environmental Health Department 0405 Castle Creek Road Aspen, CO 81612 RE: Onsite Wastewater System AS -BUILT, Sharman Residence, Lot 4, Capital Woods Subdivision, Capital Creek Road, Pitkin County, CO SE Job No. 23160.01 Permit Number: 04002 Parcel ID: 2645-032-01-004 Dear Keith: Pursuant to requirements, this letter provides documentation that the new Onsite Wastewater System (OWS) recently installed at the above referenced site is in general compliance with the permitted design. Sopris Engineering inspected the excavations and the installation of system components at various times during construction prior to final backfill. The system constructed on site was designed and built to serve the needs of an equivalent 4 -bedroom house. It is our understanding that the improvements to Lot 4 include construction of a 3- bedroom home and that a single bedroom ADU will be constructed on Lot 6 in the future. Sopris Engineering performed several visits to inspect and document the as built conditions of the constructed system. We have coordinated our efforts with the contractor that built the system. The as built conditions and installation of the new OWS components is in compliance with the permitted design specifications for the system. The System was installed in accordance with Pitkin County Regulations; the design presented in the Sopris Engineering Report and the design drawing, dated November 25, 2003. A 1500 -gallon dual compartment concrete septic tank was instal''.ed with an appropriate inlet sanitary tee and an Orenco Systems Inc., duplex pump bio -tube vault dosing assembly and associated piping and controls to serve the Lot 4 house. The 1105 sq. ft Sand Filter/absorption field. was constructed with a pair of mounded gravel and pipe bed type sand filter absorption systems. The pipe and gravel distribution layer was installed over 24" to 30" of Pitkin County type ISDS sand. Suitable pit run type material fill was placed as needed below the sand filter to raise the level of the mounded beds to an appropriate height above the seasonal high ground water. The Sand Filter/absorption beds were installed level. Inspection ports were installed on each corner end chamber and on the alternate ends of the interior rows in each bed. The average depth at the top of the sand from existing ground is approximately 3 feet. The exposed soils after grubbing were suitable and consistent across the field. The distribution gravel was covered with filter fabric and a minimum of 12 inches of backfill was placed to the finish grades that have been shaped to provide drainage away from the beds. Appropriate grading around the mound is complete with approximate side slopes at 3:1. The pump assembly and distribution box has been installed according to the engineered design plans. Additional observations of the soils within the field were performed during construction indicating that the soils are consistent with the description in the geotechnical report. Seasonal high ground water levels were observed from the end of May through Mid July to be between 12 and 18 inches below the lowest existing ground elevation near the western edge of the field. Seasonal high ground water levels were observed within approximately 2 feet of the lowest surface grades below the field. The highest water level observed was at the site elevation of 7163. The 100 -year flood water level has been estimated to be at site elevation of 7164.0. The top of the sand layer and bottom of the distribution layer, in the lower bed is at an elevation of 7168.5 approximately 4.5 and 5.5 feet above the observed water level and the flood elevation respectively. 502 Main Street „ Suite A3 • Carbondale, CO 81623 • (970) 704-0311 • Fax (970) 704-0313 SOPRis ENGINEERING • LLC civil consultants William Sharman C/O Keith Webster SE Job No. 23160.01 August 5, 2004 Page 2 OWS Operation and Maintenance The re establishment iof vegetative cover over the field and responsibility for inspection and maintenance of the system will remain with the Lot Owner or the owners representative. All components of the engineered OWS shall be inspected on a regular basis and be properly maintained. The system and responsibility for repair and maintenance of the system will remain with the Owner. The OWS should require minimal maintenance. Several factors influencing the need for maintenance include: actual wastewater flows versus design flows, the volume of kitchen/domestic waste (excluding human waste and toilet paper), excessive household chemicals and other toxic liquids. The tank, absorption field and other system components should be visually inspected bi-annually for debris, damage, leaks, or other potential problems. In general, for a properly utilized system, septic tanks should be pumped and inspected every 2 - 4 years. The effluent filters should be cleaned every six months and at the time of pumping. Absorption fields should be maintained with suitable cover and kept free of root invasive plants. Positive surface drainage away from the absorption field should be maintained. If you have any question or need any additional information, please call. Sincerely, SOPRIS ENGINEERING, LLC f�(YEjM Mountains Ptj0iTWAMeii& FAMNE Drawer 368 61601 G anwood Spnngs Tei: 970-704-4800 Fu: small: Sta Plant: Sievers ISDS Sand Produck Standard refsrence: ISDS Sand A99f8909 type: Sand MIX -crushed -nMra l Process: G901W, Igneous M Statistic's date: O6/08/2004 Cnoosen test number. 8 Min date: 10/16/2003 M,nx dote: 10/27/2003 K tydor_ 2 Responslbi9: ' V1 IL'AFARGE NORTH AMERICA Construc6a jalerWs Date: June 8, From the Desk of Paul Ku#ter, plu nlGar6eld County Aggsegatle sales Lafarge Western Slope Division Phone;970-7o4-4805 Fax; -970-704-4786 Tor ASPEN EARTH MOVING AMen 60M -Jill/ SpeualInstructions; ATTA4 FOR OUR ISOS54NO TOGA ASPEN GLEN, WE MA VE Z0 NUMBER A D rAkrNF0 Pi - Fax: 953-2247 YOU WrLL FIND THF STATISTICAL ANAL YS -TS r'SrEWRS RANCH PIT ON 109 ROAD NEXT TO VS AVAILABLE, PLEASE CUL ME WITH A JOB D SCHEDUIJNG TRUCKS. Comments: I can be re at (970) 7134 -4511 -for my cell at (9747) 379-4926 Thanks again and good luck! Sincerely, l Paul Kutter LafargeWe' Inc. should you experi nce problems with this tmission, please call 970-704-05 un contained in this facsimile message is pavitegac and confidential. Intended for the use Of the individual or entity named The lnformati ,1 above. ff the reader of this message is not the Intended .recipient or the employee or agent responsible to deliver it to the intended recipient, l you are hereby notified than any dissemination, distribution or copying of this communication is strictly prohibited. if you have received this ; via the U.S. Postai communication in error, please notify us by telephone= and return the original message to us at the address below Service. LAFARGE WEST. INC- P.O. pra"r 368. ($1enw00d Springs, CO 81602 Office: (970) 704-40) Fsx: (970) 963.4137 6wnM m +fGVC%CG GF�� phone 970-920-5438 fax 970-920-5077 0405 Castle Creek Rd, Aspen CO 81611 e-mail carlab@ci.aspen.co.us FaX To: Keith From: Carla Block Fax: 544-8173 Pages: 2 Phone: Date: 1/14/04 Re: septic permit CC: Paul Rutledge ❑ Urgent 0 For Review ❑ Please Comment ❑ Please Reply ❑ Please Recycle This permit is not valid until there is confirmation of groundwater levels at a time of high runoff. I will e- mail Jim Austin in the bldg department and let them know we are OK to sign off. If you have any questions regarding this permit, please give me a call. Thank you, Carla `, 3 cN --- ucQ/ J �J DEPARTMENT OF THE ARMY PE�1 "CEN Permittee: Nancy McKenney JAN 13 2004 Post Office Box 715 p Snowmass, Colorado 81654 PITKIN COUNTY �R�a W RONMENTAL HEALTH / Permit Number: 200275458 41 Issuing Office: U.S. Army Engineer District, Sacramento ��i` �1• Ccrps of Engineers U ^* 1325 "J" StreetIX— Sacramento, California 95814-2922 NOTE: The term "you" and its derivatives, as used in this permit, means the permittee or any future -transferee. The term "this office" refers to the appropriate district or division office of the Corps of Engineers having jurisdiction over the permitted activity or the appropriate official of that office acting under the authority of the commanding officer. You are authorized to perform work in accordance with the terms and conditions specified below. Project Description: To discharge fill into 0.199 acre of waters of the U.S. for the purpose of a single family residence at Lot 4, Capitol Creek Subdivision. All work is to be completed in accordance with the attached plans, also reference Figures A -Revised (dated 01/14/03) and C -Foundation Schematic (date 01/03/03). Project Location: Near the Town of Snowmass, Colorado, approximately 2 miles from the intersection of Colorado State Highway 82 and Old Snowmass Creek Road. The neighboring address for this undeveloped lot is 0199 Capitol Creek Road (Lot 6 -Zane Property) which shares a common driveway for this property, 1/8 mile west from the T -intersection of Capitol Creek and Old Snowmass Creek Roads.The lot is located within Section 3, Township 9 South, Range 86 West, Pitkin County, Colorado. Permit Conditions.:j General Conditions: 1. The time limit for completing the work authorized ends on March 5, 2006. If you find that you need more time to complete the authorized activity, submit your request for a time extension to this office for consideration at least ninety days (90) before the above date is reached. 2. You must maintain the activity authorized by this permit in good condition and in conformance with the terms and conditions of this permit. You are not relieved of this requirement if you abandon the permitted activity, although you may make a good faith transfer to a third party in compliance with General Condition 4 below. Should you wish to cease to maintain the authorized activity or should you desire to abandon it without a good faith transfer, you must obtain a modification of this permit from this office, which may require restoration of the area. 3. If you discover any previously unknown historic or archeological remains while accomplishing the activity authorized by this permit, you must immediately notify this office of what you have found. We will initiate the Federal and state coordination required to determine if the remains warrant a recovery effort or if the site is eligible for listing in the National Register of Historic Places. 4. If you sell the property associated with this permit, you must obtain the signature of the new owner in the space provided and forward a copy of the permit to this office to validate the transfer of this authorization. 5. If a conditioned water quality certification has been issued for your project, you must comply with the conditions specified in the certification as special conditions to this permit. For your convenience, a copy of the certification is attached if it contains such conditions. 6. You must allow representatives from this office to inspect the authorized activity at any time deemed necessary to ensure that it is being or has been accomplished in accordance with the terms and conditions of your permit. Special Conditions: 1. The permittee shall maximize the use of appropriate and effective methods to prevent excessive sedimentation, erosion, and unauthorized discharges in waters of the U.S., including wetlands. Any straw or hay used for these purposes shall be certified weed -free. The permittee shall employ a qualified wetlands ecologist or similar professional, who shall be on-site during construction, for advice and prevention of unnecessary and unauthorized discharges in such waters. Construction personnel shall be instructed and supervised to avoid unauthorized work in the aquatic environment. 2. Within 30 days of completing the authorized work, the permittee shall submit a written statement to the Corps of Engineers certifying that all of the authorized work has been constructed in accordance with the terms and conditions of this permit. The certification shall be signed by the permittee. 3. The permittee shall purchase 0.2985 acre of wetlands credits from "Rocky Mountain Institute" for a credit ratio equal to 1.5 to 1.0 for impacts to 0.199 acre of wetlands. 4. The permittee shall provide evidence of purchased credit in the form of a signed Irrevocable Certificate of Compensatory Mitigation and Exhibit A -Compensatory Mitigation Summary Worksheet, prior to commencing project construction in wetlands. Further Information: 1. Congressional Authorities: You have been authorized to undertake the activity described above pursuant to: ( ) Section 10 of the Rivers and Harbors Act of 1899 (33 U.S.C. 403). (X) Section 404 of the Clean Water Act (33 U.S.C. 1344). ( ) Section 103 of the Marine Protection, Research and Sanctuaries Act of,,1972 (33 U.S.C. 1413). 2. Limits of this authorization. a. This permit does not obviate the need to obtain other Federal, state, or local authorizations required by law. b. This permit does not grant any property rights or exclusive privileges. c. This permit does not authorize any injury to the property or rights of others. d. This permit does not authorize interference with any existing or proposed Federal projects. 3. Limits of Federal Liability. In issuing this permit, the Federal Government does not assume any Liability for the following: a. Damages to the permitted project or uses thereof as a result of other permitted or unpermitted activities or from natural causes. b. Damages to the permitted project or uses thereof as a result of current or future activities undertaken by or on behalf of the United States in the public interest. c. Damages to persons, property, or to other permitted or unpermitted activities or structures caused by the activity authorized by this permit. d. Design or construction deficiencies associated with the permitted work. e. Damage claims associated with any future modification, suspension, or revocation of this permit. 4. Reliance on Applicant's Data. The determination of this office that issuance of this permit is not contrary to the pub is interest was made in reliance on the information you provided. 5. Reevaluation of Permit Decision. This office may reevaluate its decision on this permit at any time the circumstances warrant. Circumstances that could require a reevaluation include, but are not limited to, the following: a. You fail to comply with the terms and conditions of this permit. b. The information provided by you in support of your permit application proves to have been false, incomplete, or inaccurate (see 4 above). c. Significant new information surfaces which this office did not consider in reaching the original public interest decision. Such a reevaluation may result in a determination that it is appropriate to use the suspension, modification, and revocation procedures contained in 33 CFR 325.7 or enforcement procedures such as those contained in 33 CFR 326.4 and 326.5. The referenced enforcement procedures provide for the issuance of an administrative order requiring you comply with the terms and conditions of your permit and for the initiation of legal. action whey= appropriate. You will be required to pay for any corrective measures ordered by this office, and if you fail to comply with such directive, this office may in certain situations (such as those specified in 33 CFR 209.170) accomplish the corrective measures by contract or otherwise and bill you for the cost. 6. Extensions. General Condition 1 establishes a time limit for the completion of the activity authorized by this permit. Unless there are circumstances requiring either a prompt completion of the authorized activity or a reevaluation of the public interest decision, the Corps will normally give favorable consideration to a request for an extension of this time limit. Your signature below, as permittee, indicates that you accept and agree to comply with the terms and conditions of this permit. i' (PERMITTE ) (DATE (DATE) (PERMITTEE) This permit becomes a fective when the Federal official, designated to act for the Secretary of the Army, �.- has signed below. Issued for in behalf of Colonel Michael J. Conrad, Jr., District Engineer Ken Jacobson,/Chief, Colo/ado/Gunnison Basin Regulatory Office (DATE) When the structures or work authorized by this permit are still in existence at the time the property is transferred, the terms and conditions of this permit will continue to be binding on the new owner(s) of the property. To validate the transfer of this permit and the associated liabilities associated with compliance with its terms and conditions, have the transferee sign and date below. (DATE) (TRANSFEREE) November 21, 2003 William Sharman C/O Keith Webster P.O. Box 3411 Aspen, Colorado 81612 RE: Onsite Wastewater System Improvements Design,.Sharyian�Residence,,Lot 4, Capital Woods Subdivision, Capital Creek Road, Pitkin County, CO SE Job No. 23160.01 Dear Keith: Pursuant to your request, attached herewith is a letter presenting our findings in regard to the feasibility and In design and approval of an engineered Onsite Wastewater System (OWS) for the above referenced Site. The following design recommendations are based on our current knowledge of the existing site conditions and information provided by others for use in supporting your application to Pitkin County. It is our understanding that Pitkin County will allow improvements on the site and will permit a system under current accepted guidelines. Our design recommendations are feasible with respect to current and proposed land use, setback issues and geotechnical conditions. Our recommendations are in accordance with Pitkin County and the State of Colorado ISDS Regulations. We are including a detailed description of the system in this letter and have attached a site plan with details as a part of our scope of work. Conclusions We have reviewed the site's Improvement Survey Certificate, 1041 Hazard Review Plan, the preliminary site plan and the original plat. We have used this information to create an OWS plan. We also have briefly discussed the proposed tie in of thettdjacent Lot 6 ADU to the new system with Pitkin County. The area within to the existing leach field easement has been evaluated for use as an absorption field area. Based on our findings we believe that the design and installation of an improved OWS system is feasible in accordance with Pitkin County Regulations and the State of Colorado. We assume the system will serve the needs of an equivalent 4 -bedroom single-family home. It is our understanding that the proposed improvements to Lot 4 include construction of a 3 -bedroom home and that a single bedroom ADU will be constructed on Lot 6. Our design recommendations for an OWS include the installation of a 2000 -gallon concrete or fiberglass septic tank equipped with a simplex pump biotube vault dosing assembly and associated piping and controls. The treated effluent will discharge to a pair of mounded gravel and pipe bed type sand filter absorption systems. The sand filter absorption system will provide secondary treatment of wastewater for infiltration into the ground. The system will meet all required standards and setbacks for a sand filter bed treatment system. The mounded bed system can be installed over the native soils. The system will meet all required setbacks and be installed within the general boundaries indicated on the plan. Our design is outlined below and delineated on the attached site plan. 502 Main Street • Suite A3 • Carbondale, CO 81623 (970) 704-0311 • Fax (970) 704-0313 SOsPRIENGINEERING • LLC civil consultants William Sharman C/O Keith Webster SE Job No. 23160.01 August 25, 2003 Page 2 Site Location The subject site is l9cated on Lot 4, in the Capital Woods Subdivision, adjacent to Capital Creek Road in Pitkin County, Colorado. The site is situated in Section 3, T 9 S, R 86 W of the 6`h P.M. The Site comprises approximately 1.3 acres. The site is bounded by agricultural lands, riparian land, Capital Creek and scattered single-family acreages. Existing Site Conditions The site is located on a relatively flat lower river bench the moderately slope up to the Road. The topography indicated a general slope to the northwest towards Capital Creek with. The site is currently undeveloped. The site includes an existing access driveway and a developed spring. The existing ground surface in the proposed leach field easement ranges from 25% to 27%. The building envelope is adjacent to a delineated wetland and 100 -year floodplain line. The developed site and undisturbed areas are covered with grasses, willows, shrubs, brush, and scattered trees. Base Flood Elevation The site is on the FEMA; FIRM map (panel No., 08097C0066 C) dated June 4, 1987, which indicates that a portion of the site is in Zone A. A100 -year base flood elevation flood plain line has been delineated on the 1041 hazard Review mapping by Wright Water Engineers, Inc. The relative BFE appears to be approximately at 7164 feet. The leach field easement is out of the floodplain. Proposed Site Conditions It is our understanding that you intend to construct a new 1950 S.F. 3 bedroom home in the Lot 4 building envelope and that an ADU is to be constructed on the adjacent Lot 6. Therefore it is the desire of the individual lot owners to share the new OWS to serve the equivalent needs of a 4 -bedroom home. The original plat and the recent survey indicate that the septic tank easement on Lot 6 and the leach field easement on Lot 4 have been established for the use and benefit of Lots 4 and 6. The proposed improvements will include a new -mounded sand filter absorption field and septic tank, with a pump dosing assembly, located in the respective easements. Sewage from the home on Lot 4 will be collected in a wet well pump basin and lifted to the septic tank with 2" solids handling pumps. The Sewage from the ADU on Lot 6 will be collected in a wet well pump basin and lifted to the septic tank with 2" solids handling pumps or if feasible by a 4" gravity line. The proposed field location, grades and site conditions will be further evaluated during construction to confirm assumptions made in the following design recommendations. The new facilities are to be generally located as shown on the plan. William Sharman C/O Keith Webster SE Job No. 23160.01 August 25, 2003 Page 3 Subsurface Conditions Attached herewith are the results of the subsurface investigation and percolation tests conducted on October 20, 2003 by CTL Thompson, Inc. The report is dated November 3, 2003. The subsoil encountered at the site consists of about 2 feet of sandy clay topsoil and 1-2 feet of slightly clayey to clayey sand overlying silty to sandy gravel in the profile Pit to a depth of 7 feet. Shale bedrock was encountered at the bottom of the profile pit. Groundwater was encountered at a depth of 6 feet in the pit. Seasonal high ground water levels are expected to be within approximately 3.5 feet of the surface at the location of the profile pit. 100 -year flood water level has been estimated to be near site grade at site elevation 7165.0. Percolation test holes were dug however test was not performed. Based on the soil analysis and assumed structure the equivalent average percolation rates within the subsoils are estimated to be between 15 and 20 minutes per inch. Desian Criteria The proposed residence will be a 3 -bedroom house with a possible 1 bedroom ADU from the adjacent lot. This design is for an equivalent 4 -bedroom house. The design flow is calculated as follows: The new OWS shall be based on a minimum of 4 -bedrooms assuming a dwelling area under 2000 SY Residence unit - 4 bedrooms @ 2 person /bedroom = 8 person From the Pitkin County I. S. D. S. Regulation: Max. Design flow (Qd) _ # of people x 75(avg. flow gal/person/day) x 1.75 = gal/day Gallons per day for the subject house = 75 gal/person/day Qd = 8*75*1.75 =1050 a_g l/dav_ Septic Tank Per regulations Qd =1050alg /daY Volume (V) of tank = Design Flow * 1.25 (30 hour retention time) V =1050 gal/day * 1.25 = 1312 Use one 2000 -gallon septic tank Use a double chamber concrete or fiberglass tank with a filtered dosing pump system and controls. The tank must have appropriate access openings with watertight risers and lids. The tank installation must include additional dead weight concrete anchors strapped to the tank to compensate for potential buoyancy. Mounded Absorption Field Design A site plan is provided to detail the various components of the proposed sewage disposal system. The location of the proposed absorption field system is outside of the floodplain however; a mound system needs to be built high enough to so that the system functions at seasonal high groundwater conditions. We William Sharman C/O Keith Webster SE Job No. 23160.01 August 25, 2003 Page 4 have designed the mound with the assumed top elevation approximately 6 feet above the estimated high ground water levels and the theoretical maximum base flood stage as reported in the geotechnical report. The bottom of the distribution layer will be 4 feet above the theoretical maximum base flood and seasonal high ground water level to be consistent with regulations requiring a 4 -foot separation from seasonal high ground water. The following information details the technical criteria utilized in design of a proposed system. Proposed Sand Filter Absorption Svstem Based upon the percolation test rates, the standard absorption area equation yields the area required for receiving soils: A (SF) = Q *(t) 1/ : where A = Area; Q = flow (gal/day) 5 t = time in minutes This equation will give a recommended minimum absorption area: At = = 1050*(20) /2 = 939 sq. ft. Total area required = 939sq. ft. Area required for a sand filter treatment bed in a mound system: Long Term Acceptance Rate method (LTAR) Using imported course sand media yields the minimum area: LTAR maximum loading rate for sand filter = 0.95gal/S.F./day A=Q/LTAR = 1050/0.95 = 1105 sq. ft. 4. Use: Minimum 30' x 38' mounded absorption field or dimensions to obtain 1105 sq. ft. minimum. We recommend a pair of 15' x 38' mounded absorption beds with a minimum 6 -foot separation. The level grade of the up gradient mound may be stepped up a maximum of 2 feet to conform to the existing site grades. Inspection ports shall be installed at the terminal ends of the new 4" perforated distribution pipes running the length of the beds. The vertical inspection ports shall be 4" SDR 35 or schedule 40 pipes extending at least 6" above the surface. This will allow for checking the performance of the system. In regard to the current conditions, the septic tank, risers and sewage lines must be watertight to avoid discharge of effluent and infiltration of water into the system during high ground water or extreme flood events. Based on evaluation of the site it is assumed that the proposed septic tank will be in place with variable water table levels. Therefore the tank needs to have buoyancy protection by installation of appropriate dead weight anchors with cables. More detailed recommendations for buoyancy compensation will be made during final layout of the system. The mound needs to be graded to prevent surface water runoff from collecting on or around the mound. The mound shall be graded at 34tal to 1' foot vertical side slopes. William Sharman C/O Keith Webster SE Job No. 23160.01 August 25, 2003 Page 5 Effluent Dosin6 Distribution Svstem A septic tank effluent pump system will be utilized to transport effluent to the distribution header at the head of the distribution laterals in each bed. We recommend the use of an Orenco Systems BioTube pump vault system or approved equal. The pump system shall incorporate a simplex pump system however a duplex system should be considered in the event that the pump fails. Automatic float switches including a high water float with alarm shall be incorporated in the system. The pump assembly and dosing chamber will be installed in the secondary compartment of the septic tank. The vault will utilize a maintainable effluent filter. The transport line from the dosing pump to the absorption field shall be HDPE SDR -9 or schedule 40 PVC with a maximum diameter of 1.25 inches. The transport line will be installed to allow the drain back of effluent to the pump basin. The mounded bed will be pressure dosed through the distribution header pipe. The pressure will reduce to gravity distribution through the individual 4" perforated distribution laterals running the length of the bed. The perforated pipe will be SDR -35 pipe with the orifices oriented downward. A 4" inspection port will be installed at the terminal end of the distribution laterals. The effluent pump shall be sized to pump at a minimum velocity of 4 ft/sec. The dosing volume shall not exceed 150 gallons. Lift Station Design The lift station structure will consist of a 5' diameter concrete manhole with a concrete lid and a 30 -inch diameter access Ring and cover. The duplex system will have two 2" solids handling pumps set on the base of the structure and supported by rigid pipe. The pump system shall incorporate dual pumps to insure continuous operation in the event that one pump fails to operate or if peak demand requires additional capacity. The controls shall provide'•for alternate operation of each pump. Automatic float switches including a pump off switch, a ls` pump activation switch, a second pump activation lag switch and a high water float with alarms shall be incorporated in the system. Quick disconnect fittings will be installed on each pump discharge pipe for maintenance. Individual 2" SCHD —40 discharge plumbing assembly with flex hose will be connected to each pump and shall connect to the individual HDPE SDR -9 pressure pipes installed for discharge into the septic tank. The dual discharge pipes shall be installed with a continuous slope to allow drain back of the lines to the pump basin. No check valve will be installed however ball valve will be installed on each discharge plumbing assembly to facilitate maintenance. We assume that the control panel will be installed in the mechanical room. Electrical wires to the pump shall be installed into electrical conduit and shall be of suitable length to reach a suitable junction box. The alarms shall be tied into the homes security panel with a visual alarm indicator on a select interior security and/or system information panel. A visual indicator should be visible when one pump fails to operate. A visual and audible alarm indicator shall be activated if the second pump fails to operate. The control panel may be equipped with a telemetry system connected to a phone line that will automatically call the appropriate service provider if the high water alarm is activated. We recommend that an electronic data recorder be installed to record the pumping cycles to determine the sewage flow rates. We have designed the lift system to pump approximately 20 gallons per minute for an average 6 -8 -minute cycle pumping approximately 75-125 gallons per cycle. The velocity of the pumped effluent shall be William Sharman C/O Keith Webster SE Job No. 23160.01 August 25, 2003 j Page 6 maintained between 4-5 feet per second. The Electrical requirements will be single phase, 115 volts. We recommend installing Grundfos Model PSE4011 pumps or approved equal. The existing conditions required the pumps to overcome a total dynamic head between 14-18 feet that includes approximately 12 feet of static head. The discharge plumbing assembly & connections are to be approved by the pump distributor. We recommend that verification of the specified pump or equal pump size and performance should be performed by the supplier and/or manufacturer. Contractor shall confirm sewer service components, pump specification parameters and follow manufacturers recommendation for pump installation and performance. Controls and electrical service for the selected pumps shall be coordinated with the pump supplier, the electrician and contractor. OWS Operation and Maintenance All components of the engineered OWS shall be inspected on a regular basis and be properly maintained. The system and responsibility for repair and maintenance of the system will remain with the Owner. The OWS should require minimal maintenance. Several factors influencing the need for maintenance include: actual wastewater flows versus design flows, the volume of kitchen/domestic waste (excluding human waste and toilet paper), excessive household chemicals and other toxic liquids. The tank, absorption field and other system components should be visually inspected bi-annually for debris, damage, leaks, or other potential problems. In general, for a properly utilized system, septic tanks should be pumped and inspected every 2 - 4 years. The effluent filters should be cleaned every six months and at the time of pumping. Absorption fields should be maintained with suitable cover and kept free of root invasive plants. Positive surface dr9inage away from the absorption field should be maintained. Construction and Inspections Prior to construction of the permitted system the engineer should be contacted by the contractor and owner well in advance to provide adequate time to discuss the system components with the contractor, answer questions, resolve any conflict issues and schedule inspection site visits based on construction progress. County Regulations require that the Design Engineers of record perform site inspections of the permitted system during construction and provide "As -Built" documentation of the installed system to the County after construction is complete. The Regulations further require site inspections and approval by the County Environmental Health Department of the exposed components of the system prior to backfilling. Therefore the County Environmental Health Department should also be contacted and notified of the construction schedule. General Notes 1) All materials and installation practices shall conform to Pitkin County and the State of Colorado Individual Sewage Disposal Regulations. 2) All sewer lines and distribution lines in the system shall be SDR -35 PVC, Schedule 40 and/or HDPE SDR -9 unless specified otherwise on the plans. William Sharman C/O Keith Webster SE Job No. 23160.01 August 25, 2003 Page 7 3) Add a two-way clean out on the service line from the proposed house and ADU. 4) The contractor shall ensure that the concrete or fiberglass lift station pump basin, septic tank, risers and sewer lines are watertight. 5) The mounded bed area must be protected to prevent damage from vehicular or livestock traffic and must be crowned to divert drainage runoff away from the bed. 6) A maximum 3-foot separation distance shall be maintained between perforated distribution pipe laterals. 7) A pressurized distribution manifold header pipe shall be installed at the head of each bed to insure equal distribution to individual 4" perforated distribution laterals. 8) The treatment aid distribution media shall be 3/a" to l lh" clean screened rock. ®) iThe sand materia uti lteVin tiie mounded absorption bed shall have an effective size between 0.25 mm 107Ad 0.6mm. The uniformity coefficient shall be 4.0 or less. final cover of soil suitable for vegetation, a minimum 4" deep, shall be placed to the finished surface grade. The mound shall be planted (sod or mulch seeding) with suitable vegetative cover. 11) Fill utilized in constructing the mound must be clean suitable fill consistent with local material and allow for percolation rates between 15 to 20 minutes per inch. Fill materials to be approved by the exagineer. 12) The lift station vault and septic tank needs to be anchored to prevent movement during extreme flood events when groundwater may be present. Our design and recommendations are based upon data supplied to us by others. If subsurface or site conditions are found to be different from those presented in this report, we should be notified to evaluate the effect it may have on the propoged ISDS. If the County Environmental Health Department requests changes or modifications to this design, we should be contacted to evaluate the effect on the ISDS. If you have any question or need any additional information, please call. Sincerely, SOPRIS ENGINEERING, LLC Paul E. Rutledge Design Engineer Yancy Nichol, P.E. Project Engineer GEOTECHNICAL INVESTIGATION SHARMAN RESIDENCE LOT 4, CAPITOL WOODS SUBDIVISION PITKIN COUNTY, COLORADO Prepared For: KEITH WEBSTER CONSTRUCTION P.O. Box 3411 Aspen, CO 81612 Attention: Mr. Keith Webster Job No. GS -4073 November 3, 2003 234 Center Drive I Glenwood Springs, Colorado 81601 Telephone: 970-945-2809 Fax: 970-945-7411 TABLE OF CONTENTS SCOPE 1 SUMMARY OF CONCLUSIONS 1 SITE CONDITIONS 2 PROPOSED CONSTRUCTION 2 SUBSURFACE CONDITIONS 3 SITE EARTHWORK 4 DEWATERING 5 FOUNDATION 6 FLOOR SYSTEM AND SLABS -ON -GRADE 7 BELOW -GRADE CONSTRUCTION 7 SUBSURFACE DRAINAGE 8 SURFACE DRAINAGE 9 PERCOLATION TESTING 10 LIMITATIONS 11 FIGURE 1 -APPROXIMATE LOCATIONS OF EXPLORATORY PITS FIGURE 2 - SUMMARY LOGS OF EXPLORATORY PITS FIGURE 3 - GRADATION TEST RESULTS FIGURE 4 - EXTERIOR FOUNDATION WALL DRAIN TABLE I - SUMMARY OF LABORATORY TEST RESULTS KEITH WEBSTER CONSTRUCTION LOT 4, CAPITOL WOODS SUBDIVISION CTUT JOB NO. GS -4073 SCOPE This report presents the results of our geotechnical investigation for the proposed Sharman Residence on Lot 4, Capitol Woods Subdivision in Pitkin County, Colorado. We conducted the investigation to evaluate subsurface conditions at the site and provide foundation recommendations for the proposed construction. Our report was prepared from data developed during our field exploration, laboratory testing, engineering analysis and our experience with similar conditions. This report includes a description of the subsurface conditions found in our exploratory pits, and presents our opinions and recommendations for design criteria for recommended foundations, floorsystems, and geotechnical and construction criteria for details influenced by the subsoils. The recommendations contained in this report were developed based on the currently planned construction. If plans will differ significantly from the descriptions contained herein, we should be informed so that we can check that our recommendations and design criteria are appropriate. A summary of our conclusions is presented below. SUMMARY OF CONCLUSIONS 1. Subsurface conditions encountered in our exploratory pits for the building consisted of about 2 feet of sandy clay "topsoil" and 2 feet of slightly clayey to clayey sand underlain by silty to sandy gravel. Shale bedrock was encountered at a depth of 6 feet (plan elevation 63 feet) in TP -1. 2. Free ground water was measured at depths of 4 and 6 feet (plan elevations 63 and 58 feet) in our exploratory pits for the building. Based on the 100 year flood boundary for Capitol Creek and our experience, we estimate ground water below the building envelope could rise to about plan elevation 65 feet during a 100 year flood event. 3. We recommend constructing the Sharman Residence on footing foundations supported by the undisturbed, native gravel soil or a maximum 3 feet thickness of densely compacted, structural fill. Our subsurface information indicates footings at plan elevation 65 feet or lower could require significant dewatering to construct. Design and construction criteria for footings are presented in the report. KEITH WEBSTER CONSTRUCTION LOT 4, CAPITOL WOODS SUBDIVISION 1 CTL/T JOB NO. GS -4073 4. We judge potential for differential movement will be low for slabs -on - grade supported by the undisturbed, native gravel or a maximum 3 feet thickness of densely compacted, structural fill. Below -grade areas that extend below plan elevation 65 feet will need to be designed as waterproof and to resist buoyancy forces. Floor slabs that are above plan elevation 65 feet should be provided with an underslab dewatering system. Additional discussion is in the report. 5. Surface drainage should be designed to provide for rapid removal of surface water away from the proposed residence. A foundation drain should be installed around below -grade areas that do not extend below plan elevation 65 feet. SITE CONDITIONS Capitol Woods Subdivision is located northwest of the intersection of Capitol Creek Road and East Sopris Creek Road. Lot 4 is bordered by Capitol Creek Road at the east and Capitol Creek at the west. An existing residence is on Lot 6 to the north of the subject lot. No structures are on the adjacent lot to the southwest. An existing driveway crosses Lot 4 and provides access to an existing residence on Lot 6. Ground surface on the east part of the lot slopes moderately down to the northwest. Relatively flat ground is in the west part of the lot, adjacent to the creek. The building envelope is in the west part of the lot (see Figure 1). Dense willows and hydrophilic vegetation were present in the building envelope. An easement for the individual sewage disposal system (ISDS) is in the north part of the lot. Dense brush was present in most of the east part of the site. A spring is south of the building envelope. PROPOSED CONSTRUCTION The Sharman Residence will be a two-story, wood -frame building with a detached garage. The main level of the residence will be structurally supported with a crawl space below. The garage floor is planned as a slab -on -grade. Foundation loads are expected to vary between 1,000 and 3,000 pounds per lineal foot of KEITH WEBSTER CONSTRUCTION LOT 4, CAPITOL WOODS SUBDIVISION 2 CTUT JOB NO. GS -4073 foundation wall with maximum interior column loads of 30 kips. We anticipate maximum foundation excavation depths on the order of 4feet deep. An individual sewage disposal system (ISDS) will be installed east of the residence. If construction will differ significantly from the descriptions above, we should be informed so that we can adjust our recommendations and design criteria, if necessary. SUBSURFACE CONDITIONS Subsurface conditions below the building footprint were investigated by excavating two exploratory pits (TP -1 and TP -2) with a backhoe at the approximate locations shown on Figure 1. Excavation operations were directed by our field representative who logged the soils encountered in the pits and obtained samples. Samples obtained in the field were returned to our laboratory where typical samples were selected for testing. Graphic logs of the soils encountered in our exploratory pits are shown on Figure 2. Subsurface conditions encountered in our exploratory pits for the building consisted of about 2 feet of sandy clay"topsoil" and 2 feet of slightly clayey to clayey sand underlain by silty to sandy gravel. Shale bedrock was encountered at a depth of 6 feet (plan elevation 63 feet) in TP -1. Observations during excavation indicated the sand was loose, the gravel was dense, and the shale bedrock was very hard. Free ground water was measured at depths of 4 and 6 feet (plan elevations 63 and 58 feet) in our exploratory pits for the building. The pits were backfilled immediately after excavation operations were completed. One sample of slightly clayey sand selected for gradation testing contained 29 percent gravel, 65 percent sand, and 6 percent silt and clay size particles. Gradation test results are shown on Figure 3. Results of laboratory testing are summarized on Table I. KEITH WEBSTER CONSTRUCTION LOT 4, CAPITOL WOODS SUBDIVISION J CTLIT JOB NO. GS -4C,73 SITE EARTHWORK Grading plans were not provided to us. Fill may be required to raise grades adjacent to the building. Areas which will receive fill should be stripped of vegetation, organic soils and debris. The on-site soils free of organic matter, debris and rocks larger than 6 inches in diameter can be used as fill outside the building footprint. Fill should be placed in thin, loose lifts of 8 inches thick or less, moisture conditioned to within 2 percent of optimum moisture content and compacted to at least 95 percent of standard Proctor (ASTM D 698) maximum dry density. Density and moisture content of fill should be checked by a representative of our firm during placement Structural fill may be required to raise the building above potential ground water elevation (plan elevation 65 feet). Structural fill should consist of a CDOT Class 6 aggregate base course or similar soil. A sample of the planned import structural fill soil should be submitted to our office for approval, prior to hauling to the site. Structural fill should be placed in loose lifts of 8 inches thick or less, moisture conditioned to within 2 percent of optimum moisture content, and compacted to at least 98 percent of ASTM D 698 maximum dry density. Our representative should observe placement and check density and moisture content of structural fill. We anticipate excavations in the overburden soils can be accomplished using conventional, heavy-duty excavation equipment. Excavations into the shale bedrock may require or be facilitated by blasting. Excavation sides will need to be sloped or braced to !meet local, state and federal safety regulations. We believe the on-site soils will classify as a Type C soils based on OSHA standards governing excavations. The shale will likely classify as stable rock unless a high degree of fracturing or unfavorable bedding result in a Type A or Type B classification. Temporary slopes deeper than 5 feet should be no steeper than 3/4to 1 (horizontal to vertical) in Type A soils, 1 to 1 in Type B soils, and 1.5 to 1 in Type C soils. Excavation sides can be near vertical in stable rock. Contractors should identify the KEITH WEBSTER CONSTRUCTION LOT 4. CAPITOL WOCDS SUBDIVISION CTL/T JOB NO. GS -4073 4 soils encountered in the excavations and refer to OSHA standards to determine appropriate slopes. DEWATERING As part of our investigation, we reviewed the relevant Flood Insurance Rate Map (08097C0066 C, dated June 4, 1987) published by the Federal Emergency Management Agency (FEMA). The map identifies the 100 year floodplain boundary of Capitol Creek adjacent to the subject lot. Base flood elevations were not indicated on the map. The 100 year floodplain boundary is also indicated on the Floodplain Study prepared by Louis H. Buettner surveying (see Figure 1). Based on ground surface contours on the flood plain study, base flood elevations will be between plan elevation 65 and 63 feet. Ground water levels at the site are directly affected by water levels in the creek. Free ground water was measured at depths of about 4 and 6 feet (plan elevations 63 and 58 feet) in our exploratory pits. Ground water levels vary with seasonal conditions and time of year. At this site, ground water will be closest to the ground surface during peak snow melt in spring months when water levels in the Capitol Creek are at seasonal highs. Based on the mapped flood boundary, our subsurface information, and our experience, we anticipate ground water at this site could rise to about plan elevation 65 feet during a 100 year flood event. Excavations below plan elevation 65 feet at this site could require significant dewatering, depending on the time of year and water levels in the creek. We recommend excavations for the building be made in late summer months when water levels have receded from seasonal highs. KEITH WEBSTER CONSTRUCTION LOT 4, CAPITOL WOODS SUBDIVISION 5 CTL/T JOB NO. GS -4073 FOUNDATION We recommend constructing the Sharman Residence on footing foundations supported by the undisturbed, native gravel soil or a maximum 3 feet thickness of densely compacted, structural fill. The completed foundation excavation should be inspected by a representative of our firm prior to placing forms to confirm that the exposed subsoils are suitable for support of the footings as designed. Recommendations for structural fill were presented in the SITE EARTHWORK section. We anticipate maximum total settlements of footing foundations supported on the native gravel or a maximum 3 feet thickness of densely compacted, structural fill on the order of 1 inch with differential settlement of about 1/2 total settlement. Recommended design and construction criteria for footings are presented below. 1. The footing foundations should be supported on the undisturbed, native gravel soil or a maximum 3 feet thickness of densely compacted, structural fill. Soils loosened during the excavation or forming process for the footings should be removed or the soils can be re -compacted prior to placing concrete. 2. Footings should be designed for a maximum allowable soil bearing pressure of 4,000 psf. 3. Continuous wall footings should have a minimum width of at least 16 inches. Foundations for isolated columns should have minimum dimensions of 24 inches by 24 inches. Larger sizes may be required, depending upon foundation loads. 4. Grade beams and foundation walls should be well reinforced, top and bottom, to span undisclosed loose or soft soil pockets. We recommend reinforcement sufficient to span an unsupported distance of at least 12 feet. Reinforcement should be designed by the structural engineer. 5. The soils under exterior footings should be protected from freezing. We recommend the bottom of footings be constructed at a depth of at least 42 inches below finished grades for frost protection. KEITH WEBSTER CONSTRUCTION LOT 4, CAPITOL WOODS SUBDIVISION CTL/T JOB NO. GS -4073 6 FLOOR SYSTEM AND SLABS -ON -GRADE The garage floor is planned as a slab -on -grade. Based on our laboratory test data and our experience, we judge slab -on -grade construction can be supported by the undisturbed, native soils or a maximum 3 feet thickness of densely compacted, structural fill with low risk of differential movement and associated damage. Structural II recommendations presented in the SITE EARTHWORK section should be followe . Below -grade areas that extend below plan elevation 65 feet will need to be designed as water proof and to resist buoyancy forces. A water proofing specialist should be consulted regarding design of areas that will potentially be under water for extendel�d- periods of time. Floor slabs that are above plan elevation 65 feet should be provideld with an underslab dewatering system. The below -slab drain system should consist of a washed rock layer with an embedded PVC drain pipe network as discussed in the SUBSURFACE DRAINAGE section. The most positive method to mitigate floor movement is the construction of a structural floor with an air space between the floor and the subgrade soils. The structural floor is supported by the foundation system. There are design and construction issues associated with structurally supported floors, such as ventilation and increased lateral loads, which must be considered. We recommend that floors in crawl spaces be located at plan elevation 65 feet or higher. A washed rock layer with an embedded PVC drain pipe network should be provided on crawl space floors. A vapor barrier should be placed on the washed rock surface. BELOW -GRADE CONSTRUCTION Foundation walls which extend below -grade should be designed for lateral earth pressures where backfill is not present to about the same extent on both sides of the wale. Many factors affect the values of the design lateral earth pressure. KEITH WEBSTER CONSTRUCTION LOT 4, CAPITOL WOODS SUBDIVISION 7 CTL/T JOB NO. GS -4073 These factors include, but are not limited to, the type, compaction, slope and drainage of the backfill, and the rigidity of the wall against rotation and deflection. For a very rigid wall where negligible or very little deflection will occur, an "at -rest' lateral earth pressure should be used in design. For walls which can deflect or rotate 0.5 to 1 percent of wall height (depending upon the backfill types), lower "active" lateral earth pressures are appropriate. Our experience indicates typical below -grade walls in residences can deflect or rotate slightly under normal design loads, and that this deflection results in satisfactory wall performance. Thus, the earth pressures on the walls will likely be between the "active" and "at -rest' conditions. If the on-site soils are used as backfill, we recommend design of below -grade walls using an equivalent fluid density of at least 50 pcf for this site. This equivalent density does not include allowances for sloping backfill, surcharges or hydrostatic pressures. The recommended equivalent density assumes deflection; some minor cracking of walls may occur. Backfill placed adjacentto foundation wall exteriors should be free of organic matter, debris and rocks larger than 4 inches in diameter. Backfill should be moisture conditioned to within 2 percent of optimum moisture content and compacted to at least 95 percent of standard Proctor (ASTM D 698) maximum dry density. SUBSURFACE DRAINAGE Foundation drains are normally installed to mitigate subsurface water problems in below -grade areas of buildings that are above ground water level. In our opinion, a foundation drain is not required around below -grade areas of the building thatwill extend below plan elevation 65 feet. Building areas below plan elevation 65 feet should be designed as waterproof and to resist hydrostatic uplift. KEITH WEBSTER CONSTRUCTION LOT 4. CAPITOL WOODS SUBDIVISION 8 CTL/T JOB NO. GS -4C73 We recommend installation of an exterior foundation drain around below - grade areas of the building that do not extend below plan elevation 65 feet. The exterior foundation drain should consist of 4 inch diameter, slotted, PVC pipe encased inree draining gravel. The drain should lead to a positive gravity outlet, or ump to a s�it where water can be removed by pumping. Installation of clean outs along the drain pipe is recommended. A typical foundation drain detail is presented on Figure 4. Slab -on -grade floors and crawl space floors above plan elevation 65 feet should be provided with drain systems. The drain systems should consist of 2 inch diameter, slotted, PVC pipe installed on 6 to 10 foot centers and imbedded in at least 6 inches of washed gravel. The washed rock should be covered with a vapor barrier. The pipes should convey water to perimeter drain collector pipes. Water collected should be discharged to a positive gravity outlet or to a sump pit where water can be removed by pumping. Ventilation is important to maintain acceptable humidity levels in crawl spaces. A recent trend in Pitkin County is to ventilate crawl spaces with treated air from the living areas of residences. The mechanical systems designer should consider humidity and temperature of air, and air flow volumes, during design of crawl space ventilation. It may be appropriate to install a ventilation system that is controlled by a humidistat. SURFACE DRAINAGE Surface drainage is critical to the performance of building foundations and floor slabs. We recommend the following precautions be observed during construction and maintained at all times after the residence is completed: 1. The ground surface surrounding the exterior of the residence should be sloped to drain away from the residence in all directions. We KEITH WEBSTER CO'VSTRUCTION LOT 4, CAPITOL WOODS SUBDIVISION 9 CTL/T JOB NO. GS -4073 recommend providing a slope of at least 6 inches in the first 5 feet around the residence. 2. Backfill around the exterior of foundation walls should placed be in maximum 8 inch thick loose lifts, moisture conditioned to within 2 percent of optimum moisture content and compacted to at least 95 percent of standard Proctor (ASTM D 698) maximum dry density. 3. The residence should be provided with roof gutters and downspouts. Roof downspouts and drains should discharge well beyond the limits of all backfill. Splash blocks and downspout extensions should be provided at all discharge points. 4. Landscaping should be carefully designed to minimize irrigation. Plants used near foundation walls should be limited to those with low moisture requirements; irrigated grass should not be located within 5 feet of the foundation. Sprinklers should not discharge within 5 feet of the foundation and should be directed away from the building. Irrigation should be limited to the minimum amount sufficient to maintain vegetation; the application of additional water will increase the likelihood of slab and foundation movements. 5. Impervious plastic membranes should not be used to cover the ground surface immediately surrounding the residence. These membranes tend to trap moisture and prevent normal evaporation from occurring. Geotextile fabrics can be used to control weed growth and allow some evaporation to occur. PERCOLATION TESTING We directed excavation of a profile pit (Profile) and three percolation pits (P-1 through P-3) in the area of the planned individual sewage disposal system (ISDS). The approximate locations of the pits are shown on Figure 1. Graphic logs of the soils encountered in the pits are shown on Figure 2. Shale bedrock and ground were encountered in the p we pit within 7 feet of the adsorption zone. A standard 1percolation field is not appropriate at this site. We understand a professional engineer qualified in septic design will design the individual sewage disposal system (ISDS) for the project. KEITH WEBSTER CONSTRUCTION LOT 4, CAPITOL WOODS SUBDIVISION 10 CTUT JOB NO. GS -4073 LIMITATIONS Our exploratory pits were located to obtain a reasonably accurate picture of subsurface conditions. Variations in the subsurface conditions not indicated by our pits will occur. We should observe the completed foundation excavation to confirm the soils are as anticipated from our exploratory pits and suitable for support of the footings al designed. Our report was based on conditions disclosed by our exploratory pits, laboratory testing, engineering analysis and our experience. Criteria presented reflect our understanding of the proposed construction. If construction will differ significantly from the descriptions in the report, we should be informed so that we can check that our recommendations and design criteria are appropriate. This investigation was conducted in a manner consistent with that level of care and skill ordinarily exercised by geotechnical engineers currently practicing under similar conditions in the locality of this project. No other warranty, express or implied, is made. If we can be of further service in discussing the contents of this report or in the analysis of the influence of the subsoil conditions on the design of the structure, please call. CTUTHOMPSON, INC. Ja s D. Kellogg4r Staff Geotechnical Engineer JDK:JM:cd (5 copies sent) KEITH WEBSTER CONSTRUCTION LOT 4, CAPITOL WOODS SUBDIVISION CTLT JOB NO. GS -4073 2 A\ SCALE. 1 = 2a / \ 14, / E1 3A HOLE 2 o U r O I /8A M KQit11 Webster Construction S Shftman Renlrtnce i JOb No. GS -4073 LOT 6 11.5' AOC __- Approximate Locations of Exploratory Pit's W W .e "— 55 LEGEND: PqF 9 f TP -1 EL=67 TP -2 EL=63 Profile EL=65 Sandy clay "topsoil", vegetation and roots, moist to very moist, dark brown, black. Sand, slightly clayey to clayey, scattered gravel, organics, loose, very moist to wet, dark brown, black. (SC, SP—SC) Gravel, silty to sandy, organics, dense, wet, gray, black. (GP, GP—GM) Shale bedrock, very hard, gray, black. Indicates bulk sample. P-1 EL=66 P-2 EL=65 70 LIA m 65 < 0 0 a m m 60 —i 55 NOTES: 1. Exploratory pits were excavated with a backhoe on October 20, 2003. Pits were backfilled immediately after excavation operations were completed. Indicates free ground water level measured on the day of excavation. Indicates backhoe refusal. 2. Locations of exploratory pits are approximate. Plan elevations were interpolated from ground surface contours on a Flood Plain Study prepared by Louis H. Buettner Surveying 3. These exploratory pits are subject to the explanations, limitations and conclusions as contained in this report. SUMMARY LOGS OF EXPLORATORY PiTS Job No. GS -4073 Fig. 2 MOMME1, JOB NO. GS -4073 I HYDROMETER ANALYSIS I SIEVE ANALYSIS 25 HR. 7 HR. TIME READINGS U.S. STANDARD SERIES CLEAR SQUARE OPENINGS 45 MIN. 15 MIN. 60 MIN. 19 MIN. 4 MIN. 1 MIN. *200 *100 *50 *40 *30 *16 *10 *8 *4 318' 314' 11/2" 3" 5"6" 8" 100 MMMMWAMM1111 10 MEE 0 90 MMM 10 90 80 oil 80 20 20 MENEM ME M 70 70 30 30 IIiiY E z z 140 ru 60 40 a 60 rc rc OW 50 z 50 50 w w rcw MEW Ell M I w 40 w IMM 'AMMEMEN MM 160 w 40 MMMWWMMM 60 30 30 70 EK M M1110 20 HIMIN 20 - so 10 EMEMIMMEM M1 10 90 1910nn EMIMMEMEM111100 I am 00010111MEMOMEMIMMIMMEM 0.002 .019 .037 .074 .149 .297 590 1.19 2.0 2.38 4.76 9.52 11 n .001 .005 .009 152 0.42' DIAMETER OF PARTICLE IN MILLIMETERS 0.002 .019 .037 .074 .149 .297 ' 590 1.19 2.0 2.38 4.76 1 761 11 .001 SANDS I GRAVEL - _1: CLAY (PLASTIC) TO SILT (NON -PLASTIC) F�11E� MEDIUM I COARSE I FINE COARSE COBBLES I SANDS GRAVEL :Z I JOB NO. GS -4073 I HYDROMETER ANALYSIS. I SIEVE ANALYSIS 25 HR. 7 HR. TIME READINGS U.S. STANDARD SERIES CLEAR SQUARE OPENINGS 45MIN. 15MIN. 60MIN.19MIN. 4MIN. 1MIN. *200 *100 *50*40'30 *16 `10 '8 *4 3/8" 314" 11/2" 3' 6"6"8" 0 100 10 90 oil 80 20 MENEM 70 30 IIiiY z Sample of SAND, SLIGHTLY CLAYEY (SP -SC) GRAVEL 29 % SAND 65% From TP -2 AT 4-6 FEET SILT & CLAY 6 % LIQUID LIMIT 30% PLASTICITY INDEX 11 % GRAVEL % SAND % SILT & CLAY % LIQUID LIMIT % PLASTICITY INDEX % Sample of From Gradation Test Results FIG. 3 I HYDROMETER ANALYSIS. I SIEVE ANALYSIS 25 HR. 7 HR. TIME READINGS U.S. STANDARD SERIES CLEAR SQUARE OPENINGS 45MIN. 15MIN. 60MIN.19MIN. 4MIN. 1MIN. *200 *100 *50*40'30 *16 `10 '8 *4 3/8" 314" 11/2" 3' 6"6"8" 0 100 10 90 oil 80 20 MENEM 70 30 z 40 a 60 rc OW z 50 w rcw w IMM MM w 40 60 IMMEMIMMEMIUMMMEM10=11M70 30 M M1110 HIMIN 20 - so EMEMIMMEM M1 10 90 EMIMMEMEM111100 I am I) 0.002 .019 .037 .074 .149 .297 ' 590 1.19 2.0 2.38 4.76 1 761 11 .001 .005 .009 0.42 152 DIAMETER OF PARTICLE IN MILLIMETERS I SANDS GRAVEL :Z CLAY (PLASTIC) TO SILT (NON -PLASTIC) I FINE MEDIUM I COARSE I FINE I COARSE COBBLES GRAVEL % SAND % SILT & CLAY % LIQUID LIMIT % PLASTICITY INDEX % Sample of From Gradation Test Results FIG. 3 Sample of From Gradation Test Results FIG. 3 NOTE: DRAIN SHOULD BE AT LEAST 2 INCHES BELOW BOTTOM OF FOOTING AT THE HIGHEST POINT AND SLOPE DOWNWARD TO A POSITIVE GRAVITY OUTLET OR TO A SUMP WHERE WATER CAN BE REMOVED BY PUMPING. SLOPE PER OSHA ENCASE PIPE IN WASHED CONCRETE AGGREGATE (ASTM C33, NO. 57 OR NO. 67) EXTEND GRAVE TO AT LEAST 1/2 HEIGHT OF FOOTING. Job No. GS -4073 SUPPORTED SLOPE PER REPORT ..... PROVIDE PVC SHEETING GLUED BELOW GRADE WALL TO FOUNDATION WALL TO REDUCE MOISTURE PENETRATION. BACKFILL (COMPOSITION AND REINFORCED STEEL COMPACTION PER REPORT) PER STRUCTURAL DRAWINGS COVER GRAVEL WITH :" ==:: ===:: FILTER FABRIC CRAWL SPACE ------------- -.---:"ate_'..:--- ; .. 6„ Scor o�,N 2" MINIMUM 8" MINIMUM BOTTOM OF EXCAVATION OR BEYOND 1:1 SLOPE FROM BOTTOM OF FOOTING. PVC DRAIN PIPE (WHICHEVER IS GREATER) NETWORK IMBEDDED IN WASHED CONCRETE AGGREGATE 4—INCH DIAMETER PERFORATED DRAIN PIPE. THE PIPE SHOULD BE PLACED IN A TRENCH WITH A SLOPE RANGE BETWEEN 1/8 INCH AND 1/4 INCH DROP PER FOOT OF DRAIN. Exterior Foundation Wait Drain Fig. 4 cn C E C D M 0 n O D O rn M ui C r cn t - O W z O v N � —n p m m ul z O D 41 o C Dm p Z m D z X D -< r C0 m r r gm co �70 zc� o p cn � m> s -0Z cn m OM I zU) Z> o <PD) moZ O cn D z U)p r G) S U) O -G r= n n r D cn -n � T n D in n O z cn C E C D M 0 n O D O rn M ui C r cn t - O W z O 4� ,:Oct. 1. 2003 4:29PM BASPEN REAL ESTATE CO 1�oNo.8888 P,P- 2 Form No. OFFICE OF THE !ATE ENGINEER RESOURCES GWS -25 rO ORI BDO 3v'Sh`SIO Qve r iooMdo 60203 LI (303) 8®Cr3581 WELL PERMIT NUMBER 25 = — --�- DIV. 5 WD 38 DES, BASIN MD APPLIG Lnt; 4 Block: piling: 1 Subci V: CAPITOL -WOODS PROVED WELL LOCATION PITKIN COUNTY NE 1/4 NW 1/4 Section 3 Township 8 S Range 66 W Sixth P.M. NANCY H MCKENNEY pISTANGES FROM SECT1 LINES PO BOX 715 SNOWMASS, CO 81654- 400 Ft. from North Section Line 3560 Ft. from East Section Line UTM COORaiNATES (970) 927.6627 Northing: Easting: ER IT O CONST Ut.T WELL p,ONDITIONS OF APPROYAL The isstiancs of this permit 1) This well shall be used i injury will o cur to cause no other vested tr'al inJurYwater right or prelng cllude an another owner of a ver rights. sted wate 9 t from does not ensure that no knjury seeking relief in a civil court action.roval 2) The construction of this well shall be in compliance with the We#er Well Construction Rules 2 CCR 402-2, unless app of a variance has been granted by the State Board of Examiners of Water Well Construction and Pump Installation Contractors In accorJance with Rule 18- 3) Approved pursuant to GRS 37-92.602(3)(b)(!q(A) as the only well on a residential site of 1,23 acre(s) described as lot 4, filing 1, Capital Woods Subdivision, Pitkin County. 4) The use of ground water from this well atlimited to ordinary h Behold purposes inside one single family dwgiiing. The ground watershall not be used irrigation or other purposes. 5) The pumping rate of this well shall not exceed 15 GPM. 6) The return flow from the use of this well must be through an individual waste water disposal 6ystem of the non -evaporative typo where the water is returned to the same stream system in which the well Ig located. 7) This well shall be constructed not more than 200 feet from the location specified on this permit. NOTE: parcel Identification Number (PIN): 49-2645-032-01-004 NOTE: Assessor Tax Schedule Number: R006438 At've, APPROVED MBC State Engineer 9501647 Mh meo it Ud U1:1bP Wayne Shelton 970-927-3801 p.1 -01 WELL CONSTRUCTION AND TEST REPORT Ft—OFFICE USE ONLY STATE OF COLORADO, OFFICE OF THE STATE ENGINEER L WELL PERMIT NUMBER 253222 Owner Nalne(s): Keith Webster 2 Mailing Address: P.O. Box 3411 City, State, Zip: Aspen, Co. 81612 Phone # APPROVAL. Al GWS31-91-03 3 VII 3.. OCATION AS DRILLED NE 1/4 NW 1/4 Sec: 3 Twp: 9 S Range: 86 W DISTANCES FROM SEC. LINES 400 ft. from North Sec. line and 3560 ft. from East Sec. line OR Northing: Easting: SUBDIVISION: Capitol Woods LOT: 4 BLOCK: FILING (UNIT): STREET ADDRESS AT LOCATION GROUND SURFACE ELEVATION ft. DRILLING METHOD Air Rotary 4 DATE COMPLETED: 12/17/2003 TOTAL DEPTH: 120 DEPTH COMPLETION: 120 5. GEOLOGIC LOG 6. HOLE DIAMETER (in) FROM (ft) TO (ft) De th Type of Material Size, Color, and Type) 9.0 0 40 000-006 Rocks, Dirt 6.5 40 120 006-120 Mancos Shale 7. PLAIN CASING OD (its) Kind wall sae From (ft) To (ft) 7.0 Steel 0.240 -1 40 5.5 PVC 0.250 20 45 5.5 PVC 0.250 100 120 PERF. CASING : Screen Slot Size 5.5 PVC 0.250 45 too 8. Filter Pack 9. Packer Placement Water Located: 45 - 80 Material Type Size : Depth Remarks Interval 10. GROUTING RECORD Material Amount Dcnsity interval Placement Cement 5 sks 6 al/sk 10-40 poured 11. DISINFECTION Type HTH Amt. Used: 4 oz. 12. WELL TEST DATA : ( ) Check Box If Test Data Is Submitted On Supplemental TESTING METHOD: Air Compressor Static Level : 8 ft. Date/Time Measured 12/17/2003 Production Rate 15 gpm Pumping Level : Totall ft. Date/Time Measured 12/17/2003 Test Length : 2 hours Test Remarks: 1 have read the statements made nercin and know the contents thereof and that they arc true to lay knowledge. (Pursuant to Section 24.41-0 (13)(a) CRS, the making of falsc statements 13. constitutes perjury in the second degree and is punishable as a class 1 misdemeanor.) CONTRACTOR : Shelton Drilling Corp. Phone: (970) 927-4182 Mailing Address : P.O. Box 1059 Basalt, Co. 621 Lic. No. 1095 Name / Title (Please Type: or Print) Signatu _. _, ._.._._ Date Wayne Shelton / President 12/17/2003 Uec it UJ Ut:lbp Wayne Shelton 970-927-3801 p.l 1.0. WELL CONSTRUCTION AND TEST REPORT 'JR OFFICE USE ONLY STATE OF COLORADO, OFFICE OF THE STATE ENGINEER 1- WELL PERMIT NUMBER 253222 Owner Nalne(s): Keith Webster 2 Mailing Address: P.O. Box 3411 City, State, Zip :.Aspen, Co. 81612 Phone # APPROVAL a GWS31-91-03 3. WRI.I. LOCATION AS DRILLED NE 1/4 NW 1/4 Sec: 3 Twp: 9 S Range: 86 W DISTANCES FROM SEC. LINES 400 ft. from North Sec. line and 3560 ft. from East Sec. line OR Northing: Easting: SUBDIVISION: Capitol Woods LOT: 4 BLOCK: FILING (UNIT): STREET ADDRESS AT LOCATION GROUND SURFACE ELEVATION ft. DRILLING METHOD Air Rotary 4 DATE COMPLETED: 12/17/2003 TOTAL DEPTH: 120 DEPTH COMPLETION: 120 5. GEOLOGIC LOG 6. HOLE DIAMETER (in) FROM (ft) TO (ft) Depth Type of Material Size, Color, andTypey 9.0 0 40 000-006 Rocks, Dirt 6.5 40 120 006-120 Mancos Shale 7. PLAIN CASING OD (in) Kind Wall Size From (ft) To (ft) 7.0 Steel 0.240 -1 40 5.5 PVC 0.250 20 45 5.5 PVC 0.250 100 120 PERF. CASING : Screen Slot Size 5.5 PVC 0.250 45 100 8. Filter Pack 9. Packer Placement Water Located: 45 - 80 Material : Type Size : Depth Remarks Interval 10. GROUTING RECORD Material Amount I Density Intcrval I Placement Cement 5 sks 6 al/sk 10-40 poured 11. DISINFECTION Type HTH Amt. Used: 4 oz. 12. WELL TEST DATA : ( ) Check Box If Test Data Is Submitted On Supplemental TESTING METHOD: Air Compressor Static Level : 8 ft. Date/Time Measured 12/17/2003 Production Rate 15 gpm Pumping Level : Total ft. Date/Time Measured 12/17/2003 Test Length : 2 hours Test Remarks: 1 have read the stuentents made herein and know the contents thereof aad that they arc true to my knowledge. (Pursuant to Section 24-4-]-0 (13)(a) CRS, the making of falu stmmrnts 13. constrtotes pe jwy in the second dcgmc and is punishable as a class 1 ondcmcanor.) CONTRACTOR : Shelton Drilling Corp. Phone: (970) 927-4182 Mailing Address : P.O. Box 1059 Basalt, Co. 621 Lic. No. 1095 Name / Title (Please Type: or Print) Signatu _. __ ....._ _ Date Wayne Shelton / President 12/17/2003 Dec 17 03 01:16p Wane Shelton 970-27-3801 p•2 Shelton Drilling Corp P.O. Box 1059 Basalt, Co. 81621 (970) 927-4182 Lic. # 1095 Name : Keith Webster c/o Address : P.O. Box 3411 _ City, St, Zip : Aspen Co. 81612 Phone # Hole Size Depth Type Casing 1D Casing OD From -To 9.0 40 Steel 6.5 7.0 0-40 6.5 120 PVC 5.0 5.5 20-120 Invoice # : C-2227 Date : 12/17/2003 Permit #: 253222 Location : Cgpitol Creek Perforated Ft : 30 ft Estimated : 15 gpm Static Level : 7 ft Total Drilled : 120 ft Recommended Pump Set Depth 115 Ft. Pumping 15 GPM For Pump Installation We Recommend : Samuelson Pump 945-6309 (Rauh Samuelson) J & M Pump Co 945-6159 (Rick Holub) Aqua Tee Pump 984-0311 (Tom Platzer) Instructions : Price Per Foot 120 Feet @ $ 30.00 Per Foot = $ 3600.00 Feet @ $ Per Foot = $ 0.00 Total Footage Charge $ 3600.00 Minimum Well Charge (if applicable) .............................$ Conditions Of Payment: _ pay $ 3600.00 1. *WE STRONGLY .RECOMMEND A VALID PUMP TEST BE CONDUCTED BY A LICENSED PUMP INSTALLER TO DETERMINE THE ACTUAL WELL PRODUCTION AND WATER QUALITY. THIS SHOULD ESTABLISH THE ACTUAL WELL PRODUCTION PARAMETERS WHICH CANNOT BE DETERMINED WHILE DRILLING 3. The landowner is ultimately responsible for the plugging and abandonment of dry holes or replaced wells. according to State Rules and Regulations. Please contact us for details and/or prices. 4. ALL INVOICES DUE ND PAYABLF WITHIN 10 DAYS OF INVOICE DATE, UNLESS PRIOR ARRANGE- --- &R ArT' • , roi is Alvmi iNf_ ruARr_R PRR MONTH MAY BE ADDED 15 DAYS FROM FIRST BILLING Please call us if you have any questions. THANK YOU. .ran UU U -r ... - - - - - - - --- - _"f'00WATEIRWISE WATER PURIFICATION AND TREATMENT SYSTEMS 01-05-05 TO: Keith Webster FROM: Aspen Waterwise RE: Water testing / Snowmass Creek Residence In testing this well water supply, we found as follows: —� `Coliform bacteria- –negative—water bacteriologically tests safe. Iron -----negative Hydrogen sulfide -------20 ppm (we can assume sulfide bacteria to be present as well) Total dissolved solids -617 ppm PH — --6.0 Hardness 0 grains/gallon With the sulfide level at 20 ppm (very high), and the methane potential, I would recommend running the water from the well to a buried storage tank where the gases would be atomized for release to atmosphere via tank vent. We would also install a stainless circulation pump and venturi in the tank whereby we could inject ozone for tank storage oxidation, sanitation and freshening. This would be activated by the well circuit as well as by a timer which would activate to circulate ozone daily to freshen the tank in times of dormancy. The water would then be pumped into the house where it would pass through a backwashing filter to remove the oxidized material. This would be followed by a 1-5 micron filter for finer particulate removal. We will probably want to boost the pH, which measures now at 6.0. this is low enough to be aggressive to piping and mechanical systems, as well as leaching copper to the domestic supply. I think that this would bear a follow-up test before installing a pH balancing unit, though it seems pretty sure after running the well for a considerable time prior to sampling. This profile would indicate a high sodium content, and we can test for for a wider range of parameters if desired. I would strongly suggest installing a reverse osmosis water purifier for an optimum supply of drinkin /aookin , Ice water. This cou -�� g g k3�e done at the kitchen sink only, or we could install a purifier in the mechanical area with dedicated lines run to points -of -use such as ice -maker, kitchen faucet, hot/cold dispenser, master vanity cold supply, steam shower etc.. This would remove excessive dissolved solids, metals, salts and provide a perennial supply of better than bottled water quality product. Costs would depend on type of equipment, pumps, and chosen options 210-G AABC - ASPEN, CO 81611 - (970) 925-1914 • FAX (970) 925-1915 For budgeting guidelines please refer to system below including_ 1500 gallon buried storage tank (does not include excavation and setting infrastructure) Submersible pressure booster to house Stainless tank circulation pump with manifold and venturi Ozone generator Oxygen/air dryer Level switches, controls, solenoids, timer 2 cubic foot backwashing filter 20" BB x 1 micron particulate filter pH / alkalinity adjustment Aquashiekl anti -bacterial filter Central reverse osmosis water purifier with lines run to several points -of -use Installation and tax $15,000.00 est The best way to arrive at a final figure would be to establish the owners' ultimate wishes for quality within the home—what level of purity to which locations, then to break it down with figures from us and figures from Samuelson Pump Company so as to cane to a total. Ultimately, I would suggest that they supply the tank, the pumps, the service tine from well, to tank, to house —and the controls involved, and we supply equipment and installation for all treatment This would put the submersible pump and tank into his bid rather than ours. If preferred, Raun and I can put our figures together into a single package which would cover all of the above, from well to final product. in any case, equipment and installation will be guaranteed and fully warranteed_ Service and maintenance will be provided on a scheduled basis. Please call with any questions you might have, or if we can help ion any way. ZFora,Be meteror All, wson Folzu No. STATE OF COLORADO OFFICE 01= THE STAVE ENGINEER For Office Un Only GWS -11 6/2003 818 Centennial Bldg., 1313 Sherman St.. Denver, CO 80203 (303) 886-3%581 Fax (303) 866-3589 CHANGE IN OWNERSHIPJADDRESS CORRECTION OF THE WELL LOCATION Insert the Well Permit Number ZrJ3 22Z N ma. address Wd chore of theggglgg_�ng,otwnershlo of the well. NAME(S) 3.S��M/S�I Malling Address- ZD 33 C l DsfLf3.tzEl LN _ City, St. Zip ^WUS ion , Tx Phone (2S 3CD 5 2. This form is filed by the named individuallentlty claiming that they are the owner of the well per pitted as referenced above. This filing Is made Dursu,ant to C.R.S. 3740-143. WELLLOCATIOW County FITKIN Owners wag Designations n CAPITOL C(Z.EEk 20 . 5WVJ H*S Co 81(54- (Address) (City) (Zip) i((Sttate) N F— 1/4 of the NW1114, Sec. 3 , Twp. N. or ® S., Range � ❑ E. or ►[�1 W., 6V P.M. Distance from Section Lines 4-02 Ft. From Z N. or 11 S., 3520 Ft, From 0 E. or ❑ W. Line. Subdivision Name P I TOL. AmS Lot 4— , Block FilinqLLInit The above listed owner(s) says) that he, she (they) own the well described herein. The eAsting record is being for the following [Z amended reasons: Change in name of ownerChange in mailing address T. IJ Correcgon of location for exempt wells permitted prior to May 8, 1972 and non-exempt wells permitted before May 17, 1965. Please no the reverse side for further information regarding Correction of the well location. I (we) daim and say that I (we) (are) the owner(s) of the well described above, know the contents of the statements made herein, and state that they are true to my (our) knowledge. Please print the Signer's Name & Tide Signa tur ) of e w owns . Date WiWAM > OGTom-a- ( Si ZM3 Pti'll r���Mf A� �� it is the responsibility of the new owner of this well to complete and sign the form. Signatures of agents are acceptable If an original letter of agenoy signed by the owner is attached to the form upon its receipt. For Offi-Use Only state 11ngineer By Ditto RESOLUTION OF THE BOARD OF COUNTY COMMISSIONERS OF PITKIN COUNTY, COLORADO, FINDING A TAKING AND REMEDIATING THE TAKING FOR THE NICIaNNEY 1041 HAZARD REVIEW AND CONCEPTUAL SUBMISSION Resolution No. � 2003 RECITALS Nancy Haywood McKenney ("Applicant") applied to the Pitkin County Hearing Officer for 1041 Hazard Review and Conceptual Submission to establish a building envelope for the construction of a single-family residence. 2. The parcel is located on the north side of Capitol Creek Road, and is more specifically described as Lot 4, Capitol Woods Subdivision. 3. The property is zoned R-30 and contains approximately 1.27 acres. 4. The Hearing Officer denied the request at a public hearing on June 17, 2003, pursuant to Determination No. 21-2003. The Hearing Officer found that the building envelope cannot be established without impacting riparian habitat and wetland areas. The Hearing Officer also found that development is prohibited in riparian habitat and wetland areas pursuant to Section 3-80-080 (G) of the: Pitkin County Land Use Code. 5. The Applicant submitted a request for a takings determination pursuant to Sections 3-290, 4-150 and 5-220 of the Land Use Code on June 23, 2003 and June 25, 2003 to determine whether the Hearing Officer's denial of the application constitutes a taking of private property withoutjust compensation. 6. The BOCC considered the takings request at a regular meeting on July 9, 2003, at which time the BOCC continued the request to July 23, 2003. The BOCC considered the takings request at a regular meeting on July 23, 2003, at which time further evidence and testimony were presented with respect to the taking. 7. The BOCC determined that a taking had occurred pursuant to Sections 3-290 and 4-150 of the Code, based on the following findings: A. There is no way to establish a building envelope without impacting riparian habitat and wetland areas; B. The denial constitutes a taking of all reasonable use and economic return from the subject property. 8. The EOCC considered the remediation at a regular meeting on August 13, 2003, at which time condi-:ions of approval were accepted for development on the property. NOW, THEREFORE, BE IT RESOLVED by the BOCC that the denial of the McKennev 1041 Hazard Review and Conceptual Submission constitutes a taking pursuant to Sections 3-290 and 4- 150 of the Pitkin County Land Use Code. 1 I 1 I 487540 l Page: 1 of 5 f I 08/Z7/2003 C2:21F cI.iVIP DAVIS PI7KIN COUNTY CO R 0.00 D 0.80 Resolution 1s°o. 16'-2003 Page 2 BE IT FURTHER RESOLVED by the BOCC that it does hereby remediate the taking by granting approval of the McKenney 1041 Hazard Review and Conceptual Submission subject. to the following conditions, which shall run with the land and be binding on all successors in interest: The Applicant shall adhere to all material representations made in the application and public meetings. 2. Prior to submittal of any building permit applications, the Applicant shall record a 24 x 36 inch myl,ar 1041 Hazard Review Site Plan in accordance to Section 5-70-040 of the Land Use Code. The site plan shall also be submitted in a digital format for integration into the County Geographic Information System (GIS). .3. The Applicant shall obtain an access permit from the Pitkin County Engineer prior to building permit submission. 4. No development, including grading, excavation, fill placement, berming, landscaping, entry or ranch gates, and vegetation removal or disturbance shall occur outside of the approved building [and/or] development envelope except for access and wildfire mitigation. Construction, staging, parking, utility and driveway extension and maintenance shall occur within approved building, or access driveway. 5. The :Applicant shall comply with the following landscaping and wildfire defensible space mitigation standards: A. Brush, debris, and non -ornamental vegetation shall be removed within a minimum 10 foot perimeter around the structure. B. Vegetation shall be reduced to break up the vertical and horizontal continuity of the fuels a minimum of a 30 foot perimeter around the structure. C. For a distance of 10 feet around all structures establish and maintain vegetation at 6 inches or less. Woody vegetation should not be planted and flammable material should not be stored within this perimeter. D. Spacing between clumps of brush and vegetation within the 30 foot perimeters shall be a minimum of two times the height of the fuel. Maximum diameter of the clumps shall be two times the height of the fuel. All measurements shall be from the edges of the crowns of the fuel. E. All branches from trees and brush within the 30 foot perimeter shall be pruned to a height of 10 feet above the ground and ladder fuels from around trees and brush shall be removed. F. Tree crown separation. within the 30 foot perimeters shall have a minimum of 10 feet between the edges of the crowns. G. All branches that extend over the roof eaves shall be trimmed and all branches within 15 feet of the chimneys shall be removed. H. The density of fuels within a 100 foot perimeter of the structure shall be reduced. 1. All deadfall within the 100 foot perimeter shall be removed. J. The applicant shall be responsible for the continued maintenance of the defensible space vegetation requirements. The applicant shall comply with the following additional wildfire mitigation standards: 487540 Page: 2 of 6 08/27/2003 02:.21P SILVIP DAVIS PITKIN COUNTY CO R 0.00 0 0.00 Resolution No. /43--2003 Pace 3 A. Roofing: New roofs shall have a class A roof covering or a class A assembly roof system. Wood shake/shingle roof coverings and flat roofs (up to a 3:12) pitch are prohibited. B. Vents shall be screened with corrosive resistant wire mesh with mesh '/A inch maximum. C. Roofs and gutters shall be kept clear of debris. D. Yards shall be kept clear of all litter, slash, and flammable debris. E. All flammable materials shall be stored on a parallel contour a minimum of 15 feet away from any structure. F. Weeds and grasses within the 10 foot perimeter shall be maintained to a height not more than 6 inches. G. Firewood/wood piles shall be stacked on a parallel contour a minimum of 15 feet away from the structure. H. Swimming pools shall be accessible to Fire Department vehicles. 1. Fences shall be kept clear of brush and debris. J. Wood fences shall not connect to the structure. K. Any outbuildings or additional structures shall adhere to the same standards as structures. L. Fuel tanks shall be installed underground with an approved container. M. Propane tanks shall be installed according to NFPA 48 standards and on a contour away from the structure with standard defensible space vegetation mitigation around any above- ground tank. Any wood enclosure around the tank shall be constructed with materials approved for 2 hour fire -resistive construction on the exterior side of the walls. N. Each structure shall have`a minimum of one 10 pound approved ABC fire extinguisher placed in a visible and accessible location. O. Addresses shall be clearly marked with 2 inch non-combustible letters and shalt be visible and installed on a non-combustible post. P. New utility lines shall be buried. All areas disturbed by construction shall be revegetated with native shrubs and grasses to limit water consumption and additional runoff within one growing season of the project's completion. The Applicant shall comply with the mitigation standards for development on steep slopes: A. Adequate mechanical support shall be provided for cut slopes. B. Adding water, which may decrease slope stability, shall be avoided. C. Adding weight to the top of the slope shall be avoided. D. Disturbed slopes must be contoured so that they can be revegetated. E. Steepening of existing slopes shall be avoided. F. Confine cuts, fills grading and excavation to the minimum area needed or construction. 9. Prior to the issuance of any building permits, the Applicant shall obtain a septic permit from the Environmental Health Department. All sewage disposal systems must be designed by a registered professional engineer. Sewage disposal system shall be located within the approved 1SDS development envelope. 10. Prior to the issuance of septic system permits, the Applicant shall provide documentation of an adequate domestic water supply on the property. Quantity and quality of said supply shall meet the approval of the Environmental Health Department. 11. Prior to commencement of any earthmoving or construction activity, the Applicant shall stake the corners of the building envelope and install construction fencing and silt fencing around the ( II11111 Jill 4Page: 3 of 6 117540 SILVIIA SP �08/27/2003 02:Z1P DAVIS ITKIN CDUN-iY CO R 0.00 D 0.00 Resolution No./�5-2003 Page 4 perimeter of the building envelope. The fencing shall remain in place until issuance of certificate of occupancy. 12. A fireplac—e/woodstove application must be filed and approved by the Community Development Department prior to the issuance of a building permit. 13. The Applicant shall submit a Drainage and Erosion Control Plan to the County Engineer for review and approval, prior to the submittal for any building permits. The plan shall address the management of runoff during construction and after construction is complete. 14. At the time of building permit application submittal, the Applicant shall submit, for review and approval by the County Engineer, a Construction Management Plan in accordance to the Asset Management Plan. The Construction Management Plan shall indicate that vehicles associated With construction (i.e. employee traffic, construction vehicles; staging and deliveries) shall not violate County Law, such as parking on County rights-of-way. 15. Lighting shall comply with the Pitkin County lighting standards at the time of installation. 16. The applicant must comply with all of the General Wildlife Standards as described in §3- 80.80(A) of the Land Use Code. A. No riparian or wetland vegetation shall be damaged or removed outside the approved envelope as per Section 3-80.80(G)(3) of the Land Use Code. Any wetlands or riparian vegetation removed, filled, or otherwise damaged without prior approval must be mitigated at a ratio of 2:1 according to a professional mitigation plan submitted to and approved by the County. ` B. If no practicable alternative is possible, wetlands and riparian habitat lost to development must be mitigated at a 2:1 ratio according to a mitigation plan submitted by the Applicant and approved by the County prior to issuance of a certificate of occupancy.. This plan must contain the following elements: a. The name of the project; b. The name, address and phone number of -the person preparing the Revegetation Plan; C. The name, address and phone number of the Person(s) responsible for executing the plan; d. If applicable, the availability of irrigation water and, if available, the amount of water, the name of the ditch company and the method of delivering water to the site; e. A brief narrative describing the planting and seeding methods; f. A description by common and scientific name of the species of plants to be used, seed ratios and source, and container size or caliper measurement of plants to be installed; g. A drawing of the site with the location of plants to be installed shown clearly. C. The Applicant shall install and use approved bear -proof containers as required by the . 2001 Wildlife Protection Ordinance. D. Wood fencing shall employ three rails or less, be the round or split rail type, shall not exceed 48 inches in height above ground level and 12 inches in width (top view), and shall have at least 18 inches between two of the rails. Wire fencing shall consist of no more than 3 strands of smooth wire and shall not exceed 42 inches in height. III 4117540 II 1 J I Page: 4 of 6 08/27 SILVIA DAMS PITK:N COUNTY Co R e. Be 0 00 02.21P 00 Resolution No./6--2003 Page 5 E. Fruit -bearing trees and shrubs should be avoided in any landscaping due to the high level of black bear activity in this area. 17. Development in the 100 year floodplain of Capitol Creek is prohibited, is. Floor area shall be limited to 4,500 square feet as calculated at time of building permit submi The maximum building footprint shall not exceed 2,800 square feet. ttal. 19. Pursuant to Ordinance No. 022-2000, the Applicant is subject to the Fair Share Requirements and shall pay a road impact fee as calculated at the time of building permit issuance. 20. Failure to Comply with these conditions of approval may result in revocation of this permit or a* subsequent permits related to this property. 21. Statutory vested rights for the approval contained herein are granted pursuant to the Pitkin County Land Use Code and Colorado Statutes, subject to the exceptions set forth in Pitkin County Land Use Code, § 4-140 and C.R.S., § 24-68-105. The statutory vested rights granted herein shall expire; on August 13, 2006. II(487540 page: 5 of 6 6827 SILVIA CRV15 PiTKI�N COUNTY c0 ' R e.ee 0 P1. e2:21P ee0 Resolution No.64 -2003 Page 6 TAKINGS - EMEDIATION APPROVED ANDADOPTED ON THE 13TI; DAY OF AUGUST 2003. VESTED RIGHTS NOTICE PUBLISHED ON THE DAY OIC— '� / _C1�'� 2003. A� TEST: BOARD OF COUNTY COMMISSION ERS f ( if�• OF PITKIN COUNTY, COLORADO _J rJ ette Jones �� eputy County Clerk Ja atfield, Chairman Date: 8/asap 3 APPROVED F. APPROVED AS TO CONTENT: cz� John Ely, C Coun - �, Ci dy ouben. Community Development Director Case �*043-03 264503201004 I 487540 Page: 6 of 5 08/27/2003 02:21P SiLVI�q DAVIS PI7KIN COUNTY CO R 0.00 0 0.00 MEMORANDUM TO: Pitkin County Board of County Commissioners Regular Meeting — August 13, 2003 THRU: Cindy Hou'Re3r; lCommunity Development Director S1i FROM: Ezra Louthis, Planner RE: McKenney 1041 Hazard Review, Conceptual Submission and Taking Remediation SUMMARY OF REQUEST: The Applicant requested a takings hearing, pursuant to Section 4- 150 of the Pitkin County. Land Use Code, as a result of the Hearing Officer denial on June 17th, 2003 for the McKenney property located in. the Capitol Woods Subdivision. The Applicant contends that the denial constitutes a taking of private property without just compensation. The BOCC heard this application July 23, 2003, at which time it was determined that a taking had occurred and staff was directed to draft a resolution of remediation (see attached). APPLICANT: Nancy Haywood McKenny REPRESENTATIVE: Wright Water Engineers, INC. and Mt. Daly Enterprises, LLC. LOCATION: The property is lot 4, Capitol Woods Subdivision. ZONING/LOT SIZE: The property is zoned R-30 and contains 1.27 acres. BACKGROUND: The Applicant submitted a 1041 Hazard Review application that was denied by the Hearing Officer on June 17, 2003 due to the inability of the Applicant to find a portion of the property free of 1041 Hazards. The proposed building envelope avoided all 1041 Hazards with the exception of riparian habitat and wetland areas. According the Applicant's representatives, the proposed envelope avoided the most critical habitat and wetlands. Additionally, the Applicant has received a 404 permit from the Army Corps of Engineers to impact the wetlands within the proposed building envelope, and septic envelope. The application was continued at the July 9, 2003, BOCC regular meeting due to some concerns from the County Attorney that a takings may not have occurred. After further review from Staff, it has been determined that the entire lot is encumbered by Riparian vegetation and wetlands, and that a takings has occurred. RECOMMENDATION: Staff recommends the BOCC adopt a motion approving the attached resolution of remediation. ATTACHMENTS: 1. Resolution of Remediation PITKIN COUNTY NATURAL RESOURCES TO: Ezra Louthis, Community Development FROM: Jonathan Lowsky, Wildlife Biologist SUBJECT: McKenney 1041 Hazard Review DATE: 07/21/2003 The McKenney property lies entirely within the riparian area of the Roaring Fork River and most of the property is constrained by jurisdictional wetlands. Mule deer uses the riparian area during the non -winter months. Black bears are known to occur in this area and there is a history of human -bear conflicts. Given the above information, the following conditions will reduce the impacts of the proposed development on ecological communities: 1. The applicant must comply with all of the General Standards as described in §3-80.80(A) of the Land Use Code. 2. No riparian or wetland vegetation shall be damaged or removed as per Section 3- 80.80(G)(3) of the Land Use Code. Any wetlands or riparian vegetation removed, filled, or otherwise damaged without prior approval must be mitigated at a ratio of 2:1 according to a professional mitigation plan submitted to and approved by the County. If no practicable alternative is possible, wetlands and riparian habitat lost to development must be mitigated at a 2:1 ratio according to a mitigation plan submitted by the applicant and approved by the County prior to issuance of a certificate of occupancy. This plan must contain the following elements: a. The name of the project; b. The name, address and phone number of the person preparing the Revegetation Plan; c. The name, address and phone number of the person(s) responsible for executing the plan; d. If applicable, the availability of irrigation water and, if available, the amount of water, the name of the ditch company and the method of delivering water to the site; e. A brief narrative describing the planting and seeding methods; f. A description by common and scientific name of the species of plants to be used, seed ratios and source, and container size or caliper measurement of plants to be installed; g. A drawing of the site with the location of plants to be installed shown clearly. 4. Silt fences must be installed according to the County standard between any construction and any body of permanent or ephemeral water body during all phases of construction (See Pitkin County Asset Management Plan for silt fence standard). 76 SERVICE CENTER ROAD • ASPEN, CO 81611 PHONE: 970.920.5395 • FAX: 970.920.5374 5. The setback from the mean high water mark of the Roaring Fork River must be no less than 20 feet as per Section 3-50.40(13)(5). 6. Wood fencing shall employ three rails or less, be the round or split rail type, shall not exceed 48 inches in height above ground level and 12 inches in width (top view), and shall have at least 18 inches between two of the rails. Wire fencing shall consist of no more than 3 strands of smooth wire and shall not exceed 42 inches in height. 7. All non -conforming fencing on the property must be brought into compliance and any wire fences not necessary for the retention of livestock should be removed to facilitate wildlife movement. 8. Native vegetation must be maintained outside the building envelopes as per Section 3- 80.80(A)(3). 9. Installation and use of approved bear -proof trash containers as required by the 2001 Wildlife Protection Ordinance. Verification of this condition should be required before issuance of a certificate of occupancy 10. Fruit -bearing trees and shrubs should be avoided in any landscaping due to the high level of black bear activity in this area. 11. An orange safety fence must be placed around all construction sites to prevent any unnecessary vegetation disturbance during construction. Verification of this condition should be required prior to any construction activity. 12. Any areas disturbed outside the building envelope must be revegetated with native plants according to a revegetation plan submitted by the applicant and approved by the County prior to issuance of a certificate of occupancy. This plan must contain the following elements: h. The name of the project; i. The name, address and phone number of the person preparing the Revegetation Plan; j. The name, address and phone number ofthe person(s) responsible for executing the plan; k. If applicable, the P- water and, if available, the amount of water, the n the method of delivering water to the site; 1. A brief narra\� 4/ I seeding methods; m. A description v %#z�e of the species of plants to be used, seed ratios anc -.aliper measurement of plants to be installed; n. A drawing of th _ .ocation of plants to be installed shown clearly. MEMORANDUM TO: Pitkin County Board of County Commissioners Regular Meeting — July 23, 2003 THRU: Cindy Houen,,ommumty Development Director FROM: Ezra Louthis, Planner ��i L,- RE: / RE: McKenney 1041 Hazard Review and Conceptual Submission Takings Determination SUMMARY OF REQUEST: The Applicant requested a takings hearing, pursuant to Section 4- 150 of the Pitkin County Land Use Code, as a result of the Hearing Officer denial on June 17th, 2003 for the McKenney property located in the Capitol Woods Subdivision. The Applicant contends that the denial constitutes a taking of private property without just compensation. The Applicant is requesting 1041 Hazard Review, Conceptual Submission approval to establish a building envelope for the construction of a single-family residence. The proposed building envelope lies entirely within riparian and wetland areas, within which development is prohibited pursuant to Code Section 3-80-080. APPLICANT: Nancy Haywood McKenney REPRESENTATIVE: Wright Water Engineers, INC. and Mt. Daly Enterprises, LLC. LOCATION: The property is lot 4, Capitol Woods Subdivision. ZONING/LOT SIZE: The property is zoned R-30 and contains 1.27 acres. BACKGROUND: The Applicant submitted a 1041 Hazard Review application that was denied by the Hearing Officer on June 17, 2003 due to the inability of the Applicant to find a portion of the property free of 1041 Hazards. The proposed building envelope avoided all 1041 Hazards with the exception of riparian habitat and wetland areas. According the Applicant's representatives, the proposed envelope avoided the most critical habitat and wetlands. Additionally, the Applicant has received a 404 permit from the Army Corps of Engineers to impact the wetlands within the proposed building envelope, and septic envelope. The application was continued at the July 9, 2003, BOCC regular meeting due to some concerns from the County Attorney that a takings may not have occurred. After further review from Staff, it has been determined that the entire lot is encumbered by Riparian vegetation and wetlands, and that a takings has occurred. STAFF COMMENTS: The standard of review for a Board takings determination is identified in Section 3-290 of the Land Use Code, and reads as follows: "The Board shall determine whether the property owner will be denied all reasonable use and economic return on the property as a result of the questioned determination. If the Board determines that a taking has or may occur, it shall take such action as it deems appropriate to remedy the situation. In making its decision the Board shall consider the value of the property as a whole and shall not base its decision on the impact of the regulation on one portion of the ownership interest. In making its determination, the Board shall consider the beneficial uses which remain in the property notwithstanding the challenged determination and shall give due consideration to the reasonable investment - backed expectations of the landowner. " Section 4-150 of the Code requires that the Applicant submit the request for a takings hearing within 15 days of the decision and that the Board schedule a hearing within 15 days of the request. The Board is required to make a decision regarding the application for a taking determination within 15 days after the hearing on the matter. SUMMARY OF APPLICANT'S POSITION: In the attached letter, the Applicant requests a takings determination pursuant to Code section 4-150 and has included documentation that addresses Code section 5-220-010. The Applicant contends that the Hearing Officer's denial of the application has denied her all beneficial use and economic return on the property. ISSUES RELATED TO THE PROPOSED DEVELOPMENT: Issues related to the proposed development on the subject property have been fully addressed in staff's memorandum to the Hearing Officer dated June 9, 2003. The Hearing Officer, upon the finding that the proposed building envelope lies within riparian habitat and wetlands areas, denied the application pursuant to Section 3-80-080 (G) of the Land Use Code. SUMMARY OF RECOMMENDATION: Pursuant to section 3-290-020 of the Code, the Board shall consider whether or not a taking has occurred by virtue of the previous denial. The BOCC shall 1. Find that no taking has occurred because: A. The Applicant has no reasonable investment backed expectation to develop a new single-family residence in an area that contains riparian habitat and wetland areas; B. The Applicant has not been denied all reasonable use and economic return in connection with the denial of the development application; C. The Applicant does not have the right to the most profitable use of her property, which would require development in hazard areas. 2. Find that a taking has occurred because: A. The proposed building envelope is in the most suitable location on the property for development; and B. The denial constitutes a taking of all reasonable use and economic return from the subject property. RECOMMENDATION: The County Attorney has reviewed the application further and has determined that a taking has occurred. Staff recommends that the Board adopt a motion finding a taking has occurred and directing staff to prepare a resolution of remediation for review and adoption. Jun•13. 1UU3 3:51NM ;r;.,,aiGAIi S C A P E A R C H I T E C T ALL MT DALY NTERPRISES LLC A 40 eK June 23, 2003 ATTACHMENT Board of County mmissioners Pitkin County, Col rado C/O Ezra Louthis, F anner Pitkin County Co unity Development Department Via: Facsimile _ Board of County Clommissioners, No•0944 P. 2 100 North Third Street Suite 102 Carbondale Colorado 81623 Tel 970 963 9896 fax 970 963 5775 mtdoly0sopris,net I formally request takings determination hearing before the Board of County Commissioners co icerning denial of a 1041 Hazard Review for Lot 4 of Capital Woods Subdivisior in accordance to Code Sections 4-150-040, 5-220-010 on behalf of the petit oner, Ms. Nancy McKenney. The required information is listed below: Pitkin County Code Section 5-220-010 A. Tis letter serves as a written request for a takings hearing. B. Sibject property - Lot 4, Capital Woods Subdivision, 1.2 acres. P reel ID# 264503201004. Without approval of a building e 7velope for this property, the entire property cannot be veloped with a single family home as allowed by the zoning fc ir the property. The property is owned solely by Ms. tv cKenney, so the entire property interest is adversely affected denial of a 1041 Hazard Review. C. T 1LI e property, past and present, was and is vacant land with no ^�,r,,n nost agricultural uses. D, 7"e subject property was not purchased by the petitioner, h )wever the petitioner was granted the subject property ff rough a divorce settlement agreement in 1987. E. T e assessed valuation of the property according to the 2002 P Ikin County Tax Bill is $94,250. F. P eliminary estimates of value of the property set the value at $ 50,000. This estimate is based on the following facts: o Lot 3 of Capitol Woods Subdivision, a lot of comparable size, was sold for $288,000 in 2001. Services have been paid for approvals for development of this property, starting in 1999, which to date total $50,613.65. These include a wetland delineation, a 404 permit from the Army Corp of Engineers, a floodplain study and preparation of the 1041 Hazard Review. The services of surveyors and attorneys were also required. Jun -23. 2003 3:52PM No -0944 P. 3 G. T+ current mortgage principal balance is $0.00. H. £ ^?nerated by the property is $0.00. Expenses re acing to the property are listed here: Property taxes paid since 1987 are estimated to total $26,149.72. An attorney was consulted in 1988 concerning the existing driveway and was paid approximately $2,000.00 A surveyor was hired in 1988 to perform a survey of the property and was paid approximately $700.00. Services have been paid for approvals for development of this property, starting in 1999, which to date total $50,613.65. These include a wetland delineation, a 404 permit from the Army Corp of Engineers, a floodplain study and preparation of the 1041 Hazard Review. The services of surveyors and attorneys were also required. Total expenses paid to date relating to the property are thus estimated to be $79,463.37. I. TIr e petitioner is the sole proprietor and owner of the property. J. T owner/petitioner's current tax bracket is 10%. This is based o ' the 2002 Federal Individual Income Tax Return, which r ords a taxable income of $0.00. K. T rental value of the property with or without an approved 1 ` -t C r,uzura Review is estimated to be $0.00. The property is v cant and has no agricultural use. L. T e current sale value of the property according to the Pitkin unty 2002 Tax Bill is $325,000.00. 1 assume this is based on the f t that the property can be developed with an approved 1 41 Hazard Review. The current free market value is $350,000 h an approved 1041 Hazard Review. Without an approved 1 41 Hazard Review, the value of the property is $0.00. M. her pertinent information: If a 1041 Hazard Review is not granted for this property, the only persons who would have any valued interests in the d property are the owners of lots 5 and 6 because they have easements to use the leach field (lot 6 only) and spring on the property. The petitioner accepted this property as part of a divorce settlement agreement because at the time it had value as a developable piece of land because it was part of a board approved subdivision. Please contact m$ if further information is required. 1�60Z,111�1 Jun•25. 2003 4:23PM, �e C A P E A R C HT E C T HALL MT DALY EN RPRISES LLC June 25, 2003 ATTACHMENT Ezra Louthis, Planner Pitkin County Comm pity Development Department Via: Facsimile 92C_ Re: Takings Hearing, Capitol Woods Subdivision, Lot.4 Ezra, No .0979 P. 1 100 North Third Street Suite 102 Carbondale Colorado 81623 Tel 970 963 9896 Fox 970 963 5775 mtdaly@sopris.net Per Nancy McKenn 's direction, I accept the BOCC meeting date for July 9, 2003 even thought t date is 16 days from submittal of the letter requesting the takings hearing. Ple se inform us of the agenda for that date with an approximate time o when the BOCC will discuss our request. Sincerely, Susan T. Umbarger 184576 " gyr Page: 1 of 2 II 06/26/2003 11:279 SILVIA OAVIS PITKIN COUNTY CO R 0.00 D 0.00 DETERIYIINATION OF THE HEARING OFFICER OF THE COMMUNITY DEVELOPMENT DEPARTMENT OF PITKIN COUNTY, COLORADO, DENYING THE MCKENNEY 1041 HAZARD REVIEW AND CONCEPTUAL SUBMISSION Determination No. 1A -2003 RECITALS 1. Nancy Haywood McKenny (,"Applicant") has applied to the Pitkin County Hearing Officer ("Hearing Officer") for 1041 Hazard Review and Conceptual Submission approval to establish a building envelope for a new single family residence. 2. The parcel is located on the north side of Capitol Creek Road, and is more specifically described as Lot 4, Capitol Woods Subdivision. The property is zoned R-30 and contains approximately 1.27 acres. 4. The Hearing Officer considered this application at a duly noticed public hearing on June 17, 2003, at which time evidence.and testimony were presented with respect to this application. 5. The proposed building envelope is located almost entirely within riparian and designated wetland areas, and according to Section 3-80-080 of the Land Use Code, development is prohibited within these areas. NOW THEREFORE BE IT RESOLVED by the Pitkin County Community Development Hearing Officer that he does hereby deny the McKenney 1041 Hazard Review and Conceptual Submission. NOTICE OF PUBLIC HEARING PUBLISHED IN THE ASPEN TIMES WEEKLY on the 17"' day of May, 2003. DENIED this 17"' day of June, 2003. M Hearing Officer Determination No. 2A -2003 Page 2 A4Tylor, JAdministrative Assijlant APPROVED AS TO FORM: John Ely, C0u1WAttyF y 04 -PIIS264503201004 2 484676 06/926/2003 11:279 SILVIA DAVIS PITKIN COUNTY CO R 0.00 0 0.00 COMMUNITY DEVELOPMENT DEPARTMENT HEARING OFFICER OF PITKIN COUNTY, COLORADO B;7 James R. True, Hearing Officer Date 4 1 "7T APPROVED AS TO CONTENT: (—� 'c 6'd`f4ouben, Community Development Director W\r MEMORANDUM TO:. Jim True, Pitkin County Hearing Officer FROM: Ezra Louthis, Planner RE: McKenney 1041 Hazard Review and Conceptual Submission DATE: June 9, 2003 REQUEST: The Applicant requests approval to establish a building envelope within which to construct a single-family residence up to 5,750 square feet. The parcel is part of the Capitol Woods Subdivision, which was approved by the BOCC on September 5, 1972. There are six lots in the subdivision and lot 4 is one of two undeveloped lots. The parcel is constrained by steep slopes, shared easements, riparian habitat, wetlands and the Capitol Creek Floodplain. APPLICANTS: Nancy Haywood McKenny REPRESENTATIVES: Wright Water Engineers, INC. and Mt. Daly Enterprises, LLC LOCATION: Capitol Creek Road, Lot 4, Capitol Woods Subdivision ZONING/LOT SIZE: The property is zoned R-30 and contains 1.27 acres. REFERRAL AGENCIES: Comments from the County Wildlife Biologist, and the County Engineer are. attached for reference. The Snowmass/Capitol Caucus was referred, but did not submit comments. STAFF COMMENTS GMQS: The parcel is located along Capitol Creek Road. The lot is within a BOCC approved subdivision (September 5, 1972), and, therefore, is exempt from growth management up to 5,750 square feet of floor area. 1041 HAZARD REVIEW & CONCEPTUAL SUBMISSION: Floodplain: The parcel runs along Capitol Creek, and is somewhat constrained by the 100 year floodplain of Capitol Creek. With the exception of the very Northwest corner, the building envelope avoids the 100 year floodplain. Wildfire: Scott Chism, RLA, Fire Assessment Advisor, has rated the wildfire hazard within the building envelope as low, due to the presence of wetlands and plant material with a relatively high moisture content. Development is permitted within Low and Medium wildfire hazard areas, subject to mitigation (pursuant to BOCC Ordinance No. 021-2002). Wildli e: Jonathan Lowsky, the Pitkin County Wildlife Biologist, states that the parcel is dominated by functioning riparian habitat that includes mature thin -leaf alder, Colorado blue spruce, twinberry honeysuckle, and a variety of other riparian species (see Exhibit A). Additionally, most of the proposed building envelope contains jurisdictional wetlands. It is important to note that, due to the presence of shared V easements and other 1041 hazards, there is no location that is going to be free of wetlands, and according to the Applicant, the proposed envelope is the most logical arrangement. The Applicant received a Section 404 permit from the U.S. Army Corps of Engineers in March of 2003 to impact 0.167 acres of wetlands within the building envelope, and 0.032 acres of wetlands within the septic envelope. However, according to Section 3-80-080(G), of the Pitkin County Land Use Code, development is prohibited within riparian and wetland areas. Geologic: The proposed building envelope is relatively flat and containsslopes of less than 15%. The eastern portion of the parcel contains slopes in excess of 15% and 30% slopes. The proposed building envelope is located in the alluvium of Capitol Creek. According to the Applicant, the primary_eolo is hazard is high groundwater and flooding. Foundation design will reflect those potential hazards. Access: The property is accessed from Capitol Creek Road on an existing drive. The existing driveway accesses Lot 6, and will easily accommodate access to the Applicants building envelope. It should be noted that the existing access was done without an access permit, and is outside of the platted driveway easement for Lots 4 and 6. The platted driveway easement could not be utilized, however, due to the existing slope issues. The County Engineer has recommended that the Applicant apply for a Pitkin County Access Permit for the existing driveway, and remove the old driveway easement off of the recorded Plat. Water & Sewer: Water is available from the existing spring on the parcel for which the Applicant has _rights for domestic use. The Applicant proposes to utilize the existing septic easement for a septic system which would comply with Pitkin County standards. RECOMMENDATION: Staff recommends denial of the McKenny 1041 Hazard Review based on Section 3-80-080 of the Pitkin County Land Use Code which prohibits development in riparian and wetland areas. Exhibits A. Wildlife Biologist B. County Engineer Application and Site Plan provided separately PITKIN COUNTY NATURAL RESOURCES TO: Ezra Louthis, Community Development FROM: Jonathan Lowsky, Wildlife Biologist SUBJECT: McKenney 1041 Hazard Review DATE: 06/02/2003 Most of the McKenny building envelope lies within the riparian area of Capitol Creek. This riparian area is in proper functioning condition and is dominated by thin -leaf alder, Colorado blue spruce, twinberry Honeysuckle, red -osier dogwood, and at least three species of willow. In addition, much of the proposed envelope is occupied by jurisdictional wetlands (0.446 acres according to the applicant's consultant). The hydrology of the wetlands is maintained by Capitol Creek. §3-80.80(G) of the Land Use Code prohibits development within wetlands and riparian areas. From: "Bud Eylar" <bude cr ci.aspen.co.us> To: "Ezra Louthis" <ezral@ci.aspen.co.us> Subject: McKenny 1041 Date: Fri, 6 Jun 2003 15:11:27 -0500 X -Mailer: Microsoft Outlook IMO, Build 9.0.2416 (9.0.2911.0) Importance: Normal X-MailScanner-Information: Please contact the ISP for more information X-MailScanner: Found to be clean Ez, I have reviewed the application and have the following comments. * The applicant shall obtain an Access/Driveway Development Permit to reflect the location of the existing driveway to the site. * The applicant shall provide a plan and profile of the existing drive along with the permit application. Note that the driveway will be reviewed by both the County and the Basalt and Rural fire district. It may be necessary to modify the existing drive to bring it up to county and fire district standards. * The applicant shall delineate the building envelope in the field along with the 100 -year flood plain line. No development or any other disturbance shall take place within the 100 -year flood plain. * A Drainage and Erosion Control Plan shall be submitted and approved before the issuance of a Building Permit. The plan should incorporate the Best Management Practices. * If possible, existing easements should be cleaned up and reflect actual conditions or actual proposed locations. file://C :\DOCUME—l\ezral\LOCALS 1 \Temp\eud 17.htm Page 1 of 1 6/10/2003 US Army Corps of Engineers Public otmice Public Notice Number: 200275458 Date: October 16, 2002 Comments Due: November 4, 2002 Sacramento District 1325 J Street Sacramento, CA 95814-2922 In reply, please refer to the Public Notice Number TO WHOM IT MAY CONCERN: SUBJECT: Application for a Department of the Army permit under authority of Section 404 of the Clean Water Act (C`'VA) and for water quality certification under Section 401 of the CWA to place fill in wetlands for the purpose of a single-family residential home in the Capitol Woods Subdivision (Lot 4), as shown in the attached drawings. APPLICANT:Us.N_ancy McKeon k °fi C -Post Office Box 715 4 Snowmass, Colorado 81654 QCT ' 2f�7 1 M p AGENT: Wright Water Engineers, Incorporated y � ✓C0_ ___�_"+ %E Attention: Mr. Dave B. Mehan OCT 2490 `Nest 26th Avenue, Suite 100A Denver, Colorado 80211 AciI✓cN BUILDING DEPAR i HENT LOCATION: The project site is located near the Town of Snowmass, Colorado, approximately 2 miles from the intersection of Colorado State Highway 82 and Old Snowmass �Creek ce Vicinity Map, sheet l of 5). The neighboring address for this property i 199 Capitol(Lot 6) which shares a common driveway for the Lot 4 property, 1/8 mile from the fi-intersection of Capitol Creek Road and Old Snowmass Creek Road. Lot 4 consists of 1.2 acres located adjacent to Capitol Creek. PURPOSE: To develop a building envelope and construct a single-family residence on Lot 4 consistent with Pitkin County, Colorado regulations. PROJECT DESCRIPTION: The project proponent proposes to fill wetlands to construct a two-level single-family residence with an attached garage and entrance parking/turn-around area in Lot 4 of the Capitol Woods Subdivision. For Lot 4, the servicing septic system will not be placed in "waters of the United States." Figure 2A is the proposed two-level house plan for this activity. Figure 2B is a typical section through the proposed fill area of 0.205 acres of wetlands. � �,' ,��° � may►.-�- � �`�'�' - ..� �-� CESPK-CO-R Page 2 Puolic Notice Number 200275458 ALTERNATIVES: The agent for the applicant has developed an alternatives analysis as part of the application. Other than the no action alternative, other alternatives considered, but discounted are summarized as follows: 1) easement constraints limiting lot development to two smaller (less than 1000 square -feet each) non-contiguous areas bounded by Capitol Creek's floodplain and steep slopes greater than 30 percent (depicted in Figure 3), 2) a one -level house plan with similar square -footage as a two-level plan, but with increased impact to wetlands (0.287 acre compared to 0.205 acre for the preferred two-level plan), and 3) purchase of adjacent property for a re -located residential development is not practicable as none is available for purchase, is already developed or may not reduce the amount of impacts, if ever available for purchase. AREA DESCRIPTION: Lot 4 of the Capitol Woods Subdivision is situated within two distinct wetland types; forested and scrub -shrub wetlands. Generally, wetlands encompass the center portion of the lot, with a steep slope on the east side of the lot, recorded easements for a water line and leach field, an existing driveway, and mature trees on the southern end of the lot. The result is approximately 2,000 square -feet outside of these constraints in two areas that is available for development. The forested wetland, which occurs toward the southern end of the lot, is dominated b/hin-leaf alder (Alnus tenuifolia), honey suckle (Lonicera involucrata) and yellow willow (Salix lutea), with beaked sedge (Carex utriculata), arctic rush (Juncus arcticus) and wintergreen (Pyrola rotundifolia) in the understory. The scrub -shrub wetland, which is somewhat drier, occurs around the west and northeast sides of the forested wetland and is dominated by coyote willow (Salix exigua), Drummond willow (Salix drummondiana), Nebraska sedge (Carex nebrascensis), beaked sedge and arctic rush. Both wetland types are sustained by shallow groundwater and possibly over -bank flooding from Capitol Creek, and provide function for flood storage, groundwater discharge/recharge and wildlife. Additionally, the area of mature trees on the southern portion of the lot exist within the wetlands and represent the highest quality wetlands on Lot 4. ADDITIONAL INFORMATION: The applicant has requested water quality certification from the Colorado Department of Public Health and Environment, Water Quality Control Division in accordance with Section 401 of the Clean Water Act. Written comments on water quality certification should be submitted to Mr. Phil Hegeman, Planning and Standards Section, Colorado Department of Public Health and Environment, Water Quality Control Division, 4300 Cherry Creek Drive South, Denver, Colorado, 80222-1530, on or before November 4, 2002. The Colorado Department of Public Health and Environment, Water Quality Control Division also reviews each project with respect to the anti -degradation provision in state regulations. For further information regarding anti -degradation provision, please contact Mr. Hegeman at the Colorado Department of Public Health and Environment, Water Quality Control Division, telephone (303) 692-3518. CESPK-CO-R Page 3 Pudic Notice Number 200275458 The latest published version of the National Register of Historic Places and its monthly supplements have been reviewed and there are no places either listed or recommended as eligible which would be affected. This activity would not affect any threatened or endangered species or their critical habitat. The District Engineer has made this determination based on information provided by the applicant and on the Corps' preliminary investigation. Interested parties are: invited to submit written comments on or before November 4, 2002. Any person may request, in writing, within the comment period specified in this notice that a public hearing be held to consider this application. Requests for public hearings shall state, with particularity, the reasons for holding a public hearing. The decision whether to issue a permit will be based on an evaluation of the probable impact including cumulative impacts of the proposed activity on the public interest. That decision will reflect the national concern for both protection and utilization of important resources. The benefit which reasonably may be expected to accrue from the proposal must be balanced against its reasonably foreseeable detriments. All factors which may be relevant to the proposal will be considered including the cumulative effects thereof; among those are conservation, economics, aesthetics, general environmental concerns, wetlands, cultural values, fish and wildlife values, flood hazards, flood plain values, land use, navigation, shoreline erosion and accretion, recreation, water supply and conservation, water quality, energy needs, safety, food and fiber production, mineral needs, consideration of property ownership, and in general, the needs and welfare of the people. For activities involving 404 discharges, a permit will be denied if the discharge does not comply with the Environmental Protection Agency's Section 404(b) (1) guidelines. Subject to the preceding sentence and any other applicable guidelines or criteria, a permit will be granted unless the District Engineer determines it would be contrary to the public interest. The Corps of Engineers is soliciting comments from the public; Federal, state, and local agencies and officials; Indian Tribes; and other interested parties in order to consider and evaluate the impacts of this proposed activity. Any comments received will be considered by the Corps of Engineers to determine whether to issue, modify, condition or deny a permit for this proposal. To make this decision, comments are used to assess impacts on endangered species, historic properties, water quality, general environmental effects, and the other public interest factors listed above. Comments are used in the preparation of an Environmental Assessment and/or an Environmental Impact Statement pursuant to the National Environmental Policy Act. Comments are also used to determine the need for a public hearing and to determine the overall public interest of the proposed activity. Written comments on this permit application should be submitted to the District Engineer at the address listed above. Please furnish a copy of your written comments to the attention of Mr. Mark Gilfillan, Colorado/Gunnison Basin Regulatory Office, U.S. Army Corps of Engineers, Sacramento District, 402 Rood .Avenue, Room 142, Grand Junction, Colorado 81501-2563. For further information, please contact Mr. Gilfillan at telephone number (970) 243-1199, extension 15, or email Mark.A.Gilfillan@Ltsace.army.mil. Michael J. Conrad, Jr. Colonel, Corps of Engineers District Engineer Enclosures: 5 Drawings • i f 2 EA aD �b J \\\ C) a rL ,QQ= u7 Ln N Q m 0 Z ` < C) $J OC a d \ w J ~ C) m ,o xo w O � a \ z w< U O C) �LL \ P \:. W ? O r W V ce O \CS d2a o • `J \O � I J+ = N a W w w dy Zg W � I oo�o� 00 ", C -1z ul �o Q W II } / Ckez zx 3u.InpW� Z ¢ O U w W1� O 3W3,S� �J- Q O w d T C_J W �- a a b 2 �'rli 1 � � I Q C) M i f X0 a I I e I Ih 1= � y � u lLn n TT l f T_ o O N u Fill o O ce LLJ Z J N Q O U in O r o uCL 0 4q z W WU- 'Q>ZiN < W Q U I I I It It F U ti t �SbS 2� 5 7�� -� IlII1114111�h1 ` � _ . 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( .., t, �i '�"���'�r jra�T • �^�' 4 /7 1 .I- . 1 Y" , '•54, VF�.� iso'",( ,n�p'�,'.'�!�''FJ1 ,l.�� 1 /i f- � a'9 14 r s r a ri,iJq�.T � i S '. jf.IF+ �� µ • r �•u 111(((JJJ+++ 803 COLORADO AVENUE P.0 BOX 669 GLENWOOD SPRINGS, COLORADO 81601 303-945-6917 of 121 S "' 1,1—::3 C.., 7710q P}, 4E3El5Jp .-rap f� EVAP0 -T AJ5F1 r,4-r/0th ` J +-V 00 7' r I r t c a e r Fi c - 4/Z } 14 o 11 ! rV'1,� L. I 4. �-� ? 1. M 1�- �+ `SIZE 16 x /, 8 meq. IC7, . �5 ` Job" /'�l1 01- O A.415 5 , ti040. PV • A ,yP;•qtoxr Date Y m t f'1�1ri�1 %f 11 I _ Scale Sheet INI `. ( .., t, �i r s r a ELDORADO ENGINEERING COMPANY CONSULTING ENGINEERS REGISTERED LAND SURVEYORS 803 COLORADO AVENUE P.0 BOX 669 GLENWOOD SPRINGS, COLORADO 81601 303-945-6917 of INSTALLED A 24"RENCO RISER, W/ SEALED ---I BOLT DOWN TANK ADAPTER, OVER SEPTIC TANK PRIMARY C AMBER ACCESS OPENING. INSTALLED A ATERTIGHT 30" DIAMETER ACCESS RISE , W/ SEALED BOLT DOWN TANK ADAPTER, 0 R SEPTIC TANK SECONDARY CHAMBER A CESS OPENING FOR ACCESS TO PUMP ASSE BLY BIO TUBE VAULT. RISER WITH INSULATEDID IS AT THE SURFACE. DEPTH TO TOP of TANK FROM FINSH GRADE IS APPROXIM TLEY 2'. INSTALLED 2- OMPARTMENT 1500 GALLO CONCRETE SE TIC TANK WITH AN ORENCO SYSTEMS DU EX PUMP BIOTUBE VAULT DOSING ASS BLY IN THE SECONDARY COMPARTME T OF THE SEPTIC TANK. INSTALLED 4" SDR -35 GRAVI`i� SEWER LINES AT % SLOPE. / INSTALL D 4" TWO-WA'Y CLEANOUT PROPOSED GARAGE WATER FILTER ENCL t� DRIVEWAY / 1 3 I 1 38 NEW HOUSE / BUILDING ENVELOPE -OT APPROXIM TE LOCATION Of INSTALLED 1 k E PRESSURE PIPE TRANSPORT LIN WI MINIMU EPT>-OF COVER OF 3 FEET AND MINIMU / 2% SL PE GRADE TO ALLOW THE LINE TO DRAIN EFFL NT BACK TO THE PUMP BASIN. / INSP �ON P0IRT 1 /3. EXISTING 100 -YEAR FLOODPLAIN LINE BY WWE FROM 1041 HR PLAN r- EXISTING PROPERTY INE o 410 �PRING O / WETLAND BOUNDARY SCREENED BACKFILL - NATIVE SOIL AND/OR FILL MATERIAL NOT TO EXCEED 2-1/2" DIA. 1-1/2" WASHED OR CLEAN - SCREENED ROCK <5% FINES HYDRO COMPACT SAND WITH WAT AND LEVEL TOP SURFACE 24" FILTER SAND LAYER USED CLEAN COARSE SAND EFFECTIVE SIZE 0.25-0.6 MM, WITH UNIFORM. COEF.=< 4.0 INSTALLED ISDS SAND PER PITKIN COUNTY STANDARDS FILL MATERIAL USE NATIVE SOIL AND/OR PIT RUN NOT TO EXCEED 3-1/2" DIA. REMOVE ORGANIC MATERIAL - SCARIFY SURFACE AT GRADE CROWN FIELD BED TO DIVERT SURFACE WATER FILTER FABRIC MIRAFI N-140 1.5' SOD OR OTHER SUITABLE VEGETATIVE COVER 4" SDR -35 PERFORATED TOPSOIL F-4" MIN,/ DISTRIBUTION PIPE 12" MOUNDED ABSORPTION BED SYSTEM N.T.S. 3 / �-L 1.5' STYP.) / - 3' (TYP.) LOTS / ALD EASEMENT 6 PER PLAT ON INSTALED 1 TRANSPORT 40 PRESSURE PIPE FOR LOT 6 TIE IN. 71 1/4- PVC SCHD-40 PRESSURIZED DISTRIBUTION HEADER PIPE. HIGH POINT INVERT AT TEE CONNECTION WITH PRESSURE PIPE TRANSPORT LINE. PROPOSED DISTRIBUTION PIPE LATERALS INVERT AT THE MOUND IS APPROX. 2'-5' HIGHER THAN THE INVERT AT THE SEPTIC TANK OUTLET. 4" DIA. SDR -35 PERFORATED DISTRIBUTION LATERALS INSTALLED OVER 6" GRAVEL W/ ORIFICES ORIENTED DOWNWARD (TYP.) INSTALLED TWO 38' X 15' PIPE & GRAVEL MOUNDED ABSORPTION BEDS WITH (5) 35' LONG RUNS OF 4" PERFORATED SDR -35 DISTRIBUTION PIPE LATERALS INSTALLED ON 3' CENTERS FOR A TOTAL ABSORPTION BED AREA OF 1140 SQ. FT. LOCATION OF THE MOUNDED BED MEETS ALL COUNTY SETBACK REQUIREMENTS. THE SYSTEM IS PLUMBED FOR EQUAL PRESSURE DISTRIBUTION WITH A 1 :" SOLID HEADER PIPE WITH FITTINGS AND REDUCERS CONNECTED TO THE 4" PERFORATED DISTRIBU11ON LATERALS. THE DISTRIBUTION LATERALS ARE INSTALLED LEVEL IN EACH BED WITH THE INVERT A MINIMUM OF 4' ABOVE THE AVERAGE EXISTING GROUND LEVEL. THE BOTTOM SURFACE OF THE GRAVEL WAS INSTALLED AT A MINIMUM GRADE OF 4.5' ABOVE THE SEASONAL HIGH GROUNDWATER LEVEL AND FLOOD ELEVATON. THE MINIMUM HEIGTH OF EACH MOUNDED BED IS APPROXIMATELY 5 FEET ABOVE THE AVERAGE EXISTING GROUND LEVELS. THE MOUND SHALL HAS MINIMUM SIDE SLOPES OF 3' HORIZONTAL TO 1 FOOT VERTICAL INSTALLED 1 1/4" PVC SCHD-40 PRESSURIZED DISTRIBUTION HEADER PIPE. HIGH POINT INVERT AT TEE CONNECTION WITH PRESSURE PIPE TRANSPORT LINE. PROPOSED GRADES AND OWS LAYOUT WERE INSPECTED BY THE ENGINEER AND THE COUNTY. 12'x_ 24EI 4" DIAM. PERF. PVC- SDR -35 (TYP.) COORDINATE INSTALLATION W/ SCG ENTERPRISES, INC. P.O. BOX 913 SILT, CO 81652 OFFICE: 970-876-2057 FAX: 970-876-2360 Slope Ground Away from Riser 3:1 SIDE SLOPEInlet Tee Tank (TYP. AROUND PERIMETER) MIN 4" TOPSOIL Liquid Level c MOUND EMBANKMENT MATERIAL TO BE CONSISTANT WITH LOCAL MATERIAL _ AND COMPACTED TO 65% STANDARD PROCTOR DENSITY STURBED NATIVE SOIL �t 24 KNU LAYtK PVC Riser with Grommets - (bond to tank adapter with recommended adhesive) Fiberglass Gasketed Lid witl Stainless Steel Bolts PVC Splice Box with Cord Gripss� Conduit to "I Control Panel �7 Conduit Seal 3oter (cast or bolted)---, GENERAL NOTES: 1. THE OWS SYSTEM AS SHOWN ON THE PLAN AND THE DETAILS WAS DESIGNED BY SOPRIS ENGINEERING. THE PROPOSED HOUSE WAS PROVIDED BY THE OWNERS REPRESENTATIVE. THE EXISTING LOT CONDITIONS, PLAT AND SURVEY INFORMATION WAS PROVIDED BY LOUIS H. BUETTNER SURVEYING. 2. 1041 HAZARD REVIEW INFORMATION WAS OVERLAYED INTO DRAWING FROM THE MCKERNNEY 1041 HAZARD REVIEW SITE PLAN, BY WRIGHT WATER ENGINEERS, DATED 8-22-03. 1 1/4" PVC HEADER PIPE DISTRIBUTION MANIFOLD BED MOUND d EXISTING GRADE PROPOSED GRADE x ACCESS RISERS EXISTING GROUND DUPLEX PUMP/FILTER- ASSEMBLY VAULT EMOVE ORGANIC MATERIAL DIRECTLY BENEATH ABSORPTION BED MOUND 1 1/4" PRESSURE PIPE TRANSPORT LINE AT MINIMUM 2% SLOPE CROSS SECTION SYSTEM DETAIL N.T.S. - Discharge Assembly - Flexible Hoses (2) Effluent Discharge Level Control Float Assembly Check Valve (optional) Vault Inlet Ports Flow Inducer (2) OSI Effluent Pump Drain Port Filter Cartridge Biotube® Pump Vault Duplex Effluent Pumping System - 2nd Compartment Drawdown PROPOSED BUILDING \-EFFLUENT DRAIN LINE 111 j AT MINIMUM 2% SLOPE WO WAY CLEAN OUT ZSEPTICANK SECURE TANK TO ADDITIONAL DEAD WEIGHT TO COMPENSATE FOR BOUANCY. USE PRECAST CONCRETE ANCHORS PLACED ON EITHER SIDE OF TANK AT BOTTOM OF EXCAVATION OR EQUAL. 23160.01 231160-AB-0WS.DWG 8/5/04 OWS SYSTEM NOTES 1. ADD A TWO-WAY CLEAN OUT ON THE SERVICE LINE FROM THE HOUSE. 2• ALL MATERIALS AND INSTALLATION SHALL CONFORM TO STATE AND COUNTY INDIVIDUAL SEWAGE DISPOSAL SYSTEM (ISDS) REGULATIONS. 3. ALL SEWER LINES TO BE SDR -35 OR SCHEDULE 40 P.V.C. PIPE UNLESS NOTED OTHERWISE. 4. THE CONTRACTOR SHALL ENSURE THAT THE SEWER LINES, SEPTIC TANKS AND RISERS ARE WATERTIGHT. ALL PLUMBING FIXTURES AND OWS COMPONENTS SHALL BE INSTALLED AND MAINTAINED TO AVOID SURFACE OR GROUNDWATER FROM ENTERING THE SYSTEM. A SANITARY BAFFLE TEE IS REQUIRED ON THE SEPTIC TANK INLET. 5. IT IS THE RESPONSIBILITY OF THE CONTRACTOR TO CONTACT ALL UTILITY COMPANIES FOR FIELD LOCATIONS OF UTILITIES PRIOR TO CONSTRUCTION AND EXCAVATION. 6. THE ADSORPTION TRENCH/BEDS MUST BE MARKED AND PROTECTED TO PREVENT DAMAGE FROM VEHICULAR AND LIVESTOCK TRAFFIC. 7• THE TANK SHALL BE INSTALLED LEVEL ON COMPACTED EARTH. INSTALL WATERTIGHT RISERS AS NECESSARY TO BRING ALL REQUIRED ACCESS POINTS TO THE FINISHED SURFACE GRADE. 8. THE ENTIRE ABSORPTION MOUND SURFACE MUST BE REVEGATATED. 9. THE ABSORPTION MOUND SURFACE MUST BE CROWNED TO DIVERT SURFACE DRAINAGE AWAY FROM THE TRENCHES. 10. THE DIMENSIONS SHOWN ON THE PLAN INDICATE MINIMUM AREA AND SEPARATION DISTANCES FOR THE ABSORPTION MOUND. 11. THE PERFORATED DISTRIBUTION LATERALS SHALL BE INSTALLED LEVEL IN THE GRAVEL BED. THE MINIMUM COVER OVER THE TOP OF THE PERFORATED DISTRIBUTION LATERALS SHALL BE 12 INCHES, 12. THE MOUND SHALL SHALL BE CONSTRUCTED WITH A MINIMUM OF 24 INCHES OF SELECT SAND UNDER THE GRAVEL LAYER AND UP TO 2 FEET OF SANDY PIT RUN MAY BE PLACED BELOW THE SAND AND GRAVEL LAYERS AS NEEDED. THE MOUND WILL BE BACKFILLED WITH NATIVE MATERIAL AND/OR PIT RUN VOID OF LARGE ROCKS. THE FILL MATERIAL SHALL NOT EXCEED 2 1" DIAMETER AND SHALL BE PLACED TO PROVIDE 3' HORIZONATAL TO 1' VERTICAL SIDE SLOPES. THE GRAVEL LAYER SHALL BE COVERED WITH FILTER FABRIC. A MINIMUM 4" DEPTH OF TOPSOIL IS TO BE PLACED ABOVE THE FILL TO THE TOP SURFACE OF THE MOUND. VERTICAL INSPECTION PORTS SHALL BE INSTALLED ON THE ENDS OF THE DISTRIBUTION LATERALS. (TYP. ENDS OF EACH LINE) 13. ALL INSTALLATION OF PUMP SYSTEM COMPONENTS AND CONTROLS SHALL BE PERFORMED BY SCG, INC. OR ANOTHER APPROVED QUALIFIED INSTALLER. ALL PUMPING SYSTEM COMPONENTS SHALL BE INSTALLED IN CONFORMANCE WITH THE MANUFACTURES INSTALLATION INSTRUCTIONS. 14. INSTALLATION OF THE NEW RISERS, SHALL BE PERFORMED BY THE. CONTRACTOR OR BY SCG IN COORDINATION WITH THE CONTRACTOR. INSTALLATION OF THE ELECTRICAL LINES AND POWER SUPPLY SHALL BE PERFORMED BY THE ELECTRICIAN SCG IN COORDINATION WITH THE CONTRACTOR AND SCG. INSTALLATION, STARTUP AND TESTING OF THE BIOTUBE VAULT PUMP ASSEMBLY AND CONTROLS SHALL BE PERFORMED BY SCG IN COORDINATION WITH THE CONTRACTOR AND ELECTRICIAN. DOSING AND DISTRIBUTION SYSTEM 1. AN ORENCO SYSTEMS BIOTUBE DUPLEX PUMP ASSEMBLY SHALL BE INSTALLED IN THE SECONDARY CHAMBER IN THE 1,500 GALLON SEPTIC TANK. 2. THE DUPLEX PUMP ASSEMBLY COMPONENTS SHALL INCLUDE THE BIO -TUBE VAULT, A COLD WEATHER DRAW DOWN DUPLEX DISCHARGE PLUMBING ASSEMBLY WITH FLEX HOSE, PIPE, AND AUTOMATIC CONTROLS WITH ALARMS AS PACKAGE COMPONENTS IN THE PUMP VAULT ASSEMBLY. INSTALL WATERTIGHT RISERS CENTERED OVER THE ACCESS PORTS TO EASILY INSPECT AND MAINTAIN SYSTEM COMPONENTS FROM THE SURFACE. USE INSULATED ACCESS LIDS. 3. INSTALL ISOLATION BALL VALVES AND CHECK VALVES ON EACH PUMP DISCHARGE LINE. INSTALL QUICK DISCONNECT THREADED COUPLERS ON EACH PUMP DISCHARGE LINE. EXTEND DISCHARGE LINE UP TO WITHIN 12" OF THE ACCESS LID TO PROVIDE EASY ACCESS FOR MAINTENANCE OF THE PUMP. 4. A SINGLE DISCHARGE PIPE (TRANSPORT LINE) INSTALLED FROM THE PUMP BASIN RISER AT THE SEPTIC TANK TO THE DISTRIBUTION HEADERS SHALL BE INSTALLED FROM A TEE CONNECTED TO EACH PUMP'S COLD WEATHER APPLICATION DISCHARGE PLUMBING ASSEMBLY. AFTER THE PRESSURR DOSE IS COMPLETED GRAVITY DRAINBACK OF EFFLUENT TO THE BASIN WILL OCCUR THROUGH THE 1/8" ORIFICES IN EACH PUMPS DISCHARGE PLUMBING ASSEMBLY. 5. THE PUMP DISTRIBUTION TRANSPORT LINE SHALL BE INSTALLED TO DISCHARGE EFFLUENT TO THE ABSORPTION FIELD THROUGH THE SOLID HEADER PIPE THAT CONNECTS TO EACH 4" PERFORATED DISTRIBUTION PIPE. THE PRESSURE LINE CONNECTION FITTING ON HEADER PIPE SHALL BE AT A HIGH POINT TO ALLOW GRAVITY DRAINAGE BACK TO THE PUMP BASIN. THE EFFLUENT WILL EQUALLY DISCHAGE OUT OF THE 1 1/4" HEADER PIPE LINE THROUGH APPRORIATE BUSHINGS AND REDUCERS TO THE 4 INCH PERFORATED DISTRIBUTION LINES. THE INVERT OF THE PRESSURIZED TRANSPORT LINE FITTING AT THE 1 1/4" HEADER PIPE SHALL BE AT LEAST 2" ABOVE THE INVERT OF THE PERFORATED DISTRIBUTION LINES. 6. THE DOSING VOLUME SHALL BE 40-75 GALLONS PER DOSING CYCLE. THE APPROXIMATE DRAWDOWN IN THE SECONDARY TANK COMPARTMENT IS 6". 7. INSTALL PUMPS ASSEMBLIES, RISERS, ELECTRICAL SYSTEMS, FLOATS AND DISCHARGE LINE PER MANUFACTURES INSTALLATION GUIDELINES. USE AN ORENCO SYSTEMS MODEL P100511 W/ 4" FLOW CONTROLLER. THE SYSTEM SHALL BE INSPECTED BY A QUALIFIED TECHNITION EVERY SIX MONTHS. 8, ALL INSTALLATION AND MAINTENANCE SHALL BE PERFORMED BY A QUALIFIED PERSON IN ACCORDANCE WITH THE INSTALLATION & MAINTENANCE GUIDELINES FOR THE ORENCO SYSTEMS BIO -TUBE VAULT PUMP ASSEMBLY. g, THE EFFLUENT WILL DISCHAGE FROM THE PUMP THROUGH A 1 1/4" LINE TO A 1 1/4- HEADER PIPE WITH FOUR 1 1/4" DISTRIBUTION LINE TEES CONNECTED TO THE 4" PERFORATED DISTRIBUTION PIPES RUNNING THE LENGTH OF THE BED. THE INVERT OF THE EFFLUENT DISCHARGE LINE 11 AT THE PUMP BASIN OUTLET PORT SHALL BE AT LEAST 24" BELOW THE ENLECTRIAL TNHWSERFORATED DISTRIBUTION LINES. 1. AN ORENCO SYSTEMS PUMP CONTROL PANEL SHALL BE INSTALLED BY THE ELECTRICIAN IN COORDINATION WITH SCG. THE POWER SUPPLY FOR THE PUMPS AND CONTROLS SHALL CONSIST OF (2) 20 AMP CIRCUITS FOR THE PUMPS AND (1) 10 AMP CIRCUIT FOR CONTROLS. PROVIDE LINE OF SITE DISCONNECT WITH CONTROL BOX. 2. THE ELECTRICIAN SHALL INSTALL ELECTRICAL WIRES IN CONDUIT FROM THE CONTROL PANEL TO THE PUMP ASSEMBLY IN THE PUMP BASIN IN THE SEPTIC TANK. INSTALL COLOR CODED WIRES PER CONTROL PANEL DIAGRAM. INSTALL (4) 12 GAUGE WIRES FOR CONTROLS AND (6) 10 GAUGE WIRES FOR PUMPS WITH CONDUIT SEAL NEAR RISER SPLICE BOX. ELECTRIAN TO COORDINATE W/ SCG. VICK" MAP v v - fi . •..lir - T . .. �. , n a r ' y'� r r / f ,.. C�� r r 5 - , , 1 : r , \ r � F. 488704 . r r `\ f t r r \ r > r f, ! 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