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pitkin.eh.264502200005 (2008)
Pitkin Cou Environmental Health & Natural Res rtes Department Permit for an Individual Sewage Disposa, .,ystem 0405 Castle Creek Road, Suite 10, Aspen, Colorado 81611 Phone 970-920-5070 / FAX 970-920-5077 Permit # 08001 Parcel ID # 2645-022-00-005 Type of permit Name of Owner New( ) Repair( ) Addition/Remodel to House( X) Arielnirie A .Inhn Zabriskie Street Address 2567 & 2563 Snowmass Creek Rd Property legal description Size of lot 39.37 Water source Private WPII # of bedrooms in house Caretaker unit 2 # of bedrooms in caretaker unit Designed for what # rooms (list) Designed by Meets & Bounds Total square footage of the house 4417 square feet # of offices, lofts & similar sized rooms in house Total square footage of the caretaker unit HP Geotech # of offices, lofts & similar sized rooms in caretaker unit 5 bedrooms in main house — 2 bedrooms in CDU Permit information Mailing Address P.O. Box 1887, Silverthorne, CO 80498 Perc rate 50 Profile hole depth 8.5 ft Depth to groundwater or bedrock Minimum Septic tank capacity 2843 gallons Minimum Absorption area Comments Greater than 8.5 ft 1609 sq ft w/ 50% reduction Septic permit approved per compliance with the engineer design and specifications dated January 9, 2008, Project #407 0386. 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. From the absorption area, there must be at least 202 feet to the well, 152 feet to the pond, and the ditches both to the north and south must be lined within 152 feet of the absorption area. The effluent line that crosses the ditch to the north of the absorption area must be encased within 10 feet of the crossing. The system will consist of one 1000 gallon two compartment tank with a pump to serve the CDU. The main residence will be served by one 1500 gallon single compartment tank followed by a 1000 gallon single compartment tank with an effluent filter on the outlet. Effluent will be distributed to a distribution box and then to 7 trenches with 24 Quick 4 chambers in each trench. There must be at least 6 feet of undisturbed soil between each trench. The existing tank and absorption area must be properly abandoned. Where the new absorption field extends into the abandoned portion of existing system, engineer specifications must be followed. The replacement sand must conform to the requirements of Section 6.28.670 A. of the Pitkin County ISDS Regulation, or conform to Pitkin County ISDS Policy 2005-001. An invoice to document the type of sand material utilized must be submitted to this department. This permit is expressly conditioned on the property owner providing for the regular inspection, cleaning and maintenance of the system by qualified personnel, in accordance with the manufacturer's recommendations. 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. Revegetation over the area of the field is very important for the functioning of the system. Pitkin County has guidelines that must be followed to assure the plants that are introduced are appropriate for the conditions of the area. The use of native plants is strongly encouraged. Permit approved by: l i t_ , �, � Dater U Expiration Date: '71,��/0 5 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 owner's 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: p.�.�-ei// dye License Number: Final approval: Date �r r .� C 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 Owner's Mailing Address P. C . 6 o,4 0 �7 City, State, ZipJ CoC© -L Business Phone: 2 ! - s- 4 Home Phone: 'c7- E-mail Address: M Cc. •V.f,+ Primary Contact Person (all communication regarding this permit will go through this person) Name ✓�� �� � Companyc _ ''nna Contact Mailing Address Q 2 1 City, State, Zip (,( Cd 9v G - t&4 6 V 1,7 " -Business Phone : - Cell Phone : "1 " 3 5 Fax:q')_,,-T- `'i 1 � 7 . E-mail Address: (X_ � 5 F I5 . Parcel ID # (available from assessor's office Z © Q 0 at 920-5160 or at www.pitkinassessor.org)— Building Permit # (if available) U C ©1' . Z©d 1 • �'`� C z�' '©� �' Street address of property Z S Z 5V C V ho l!%j1 ac- Legal Description: Lot I rl.>I-,BI U+'l Fj�n�� 4inh Size of lot: acres. �c-�Type of proposed structure:Total square feet of house44 1 # of bedrooms (potent Caretaker Unit: Attached ( ) Detached (,<) Tntal nrea(so. ft.) of caretaker unit q3 k • Zs, # of bedrooms (potential) in caretaker unit r_ Permit is for: New Home ( ) Repair due to failure ( ) Remodel/Addition (x) Emergency use ( ) Water: Private well (X Spring ( ) Stream ( ) Community/Public Water System ( ) C 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 to 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 sqtem fail or malfunction. The permit to construct is issued on information submitted by the applicant or his/her represent fives. a owner �responsibilitY in case of failure of the system. Signature of applicant Date l10io S Received by COReceipt# �, C) I Date G:\isds\isds applic\isdsapp rev072904.doc NOTE: =1 SEPTIC PERMIT APPLICATIONS CANNOT BE ACCEPTED UNTIL ALL OF THE DOCUMENTS AND INFORMATION BELOW HAVE BEEN RECIEVED. .M SEPTIC SYSTEM APPLICATION CHECKLIST Each box should be checked to indicate the following have been completed, or submitted as part of the application. Only one copy of each document is necessary. p om leted application form. Engineer design stamped by a Registered Professional Engineer (RPE) registered in the State of Colorado. o Design must be based on the Pitkin County ISDS Regulation, Revised 2001. This design should be on a site map (1" to 20' scale) that must include locations of all existing and proposed wells, location of perc tests, contour intervals, all proposed and existing buildings, property lines, ditches, water lines, sprinkler systems, springs, suction (irrigation) lines, Uhl` drinking water cisterns, drain tiles, all water courses, floodplains, floodways, dry gulches and existing septic systems. The map must include all such features on neighboring properties within setbacks. o An individual may provide ISDS engineering services for themselves provided the dwelling the ISDS serves is his/her primary residence, but an Owner/Builder Acknowledgement must be signed at submittal. See Pitkin County ISDS Regulation Article 4, Section 6.28.110. Environmental Health & Natural Resources has been notified and given an opportunity to visit the site .-"at the time of soil testing. Soils report provided by an RPE: o Percolation tests (must be conducted by an RPE). o Soil profile. �uildig floor plans. Plans should be 11 "x17" and legible. �Land'use development approval (from Community Development): o Recorded 1041 Hazard Review Site Plan designating the approved building envelope. o Copies of all land use development approvals pertinent to location of the septic system, or pertaining to the property's water supply (e.g., BOCC Resolution, HO Decision). Proof of adequate water supply. Generally, this will include. r For private wells (well must be drilled before septic permit can be issued): ■ Well driller's report. M Well permit (issued by the Colorado Division of Water Resources) and final augmentation plan (if required). o For community and non -community public water systems: ■ Letter from the Water District confirming they have sufficient water to supply the development and have agreed to do so. div o For surface water diversions: ■ Proof of decreed water rights. Proof of adequate water quality. qt� o Bacteriology test results. (Aspen Consolidated Sanitation District and Snowmass Water & Sanitation District perform this test locally). ❑ Fee. The ISDS Permit fee is $600; the flat fee covers the first 6 hours of processing. An hourly rate of $100 will be charged beyond the first 6 hours, up to $1,000. The "tank only" fee is $150. Please make check payable to: Pitkin County Environmental Health & Natural Resources Department. A WAIVER IS AVAILABLE FOR SUBMITTING A BUILDING PERMIT APPLICATION PRIOR TO OBTAINING AN INDIVIDUAL SEWAGE DISPOSAL SYSTEM PERMIT. Please ask the Community Development Department or Environmental Health & Natural Resources Department for further information. G:\isds\isds applic\isds cklst 032306.doc ISDS DESIGN CALCULATIONS - for Pitkin Owner's Name Parcel ID # House Size (sq. ft.) (75 gpd, 100 gpd, or 130 gpd) 100 Number of Bedrooms in Main House 5 Number of Offices, Libraries, Studies, Similar-sized'Rooms in Main House Number of Bedrooms in Detached Caretaker unit 2 Number of Offices, Studies, Similar -sized Rooms in Caretaker Unit 0 (If the caretaker unit is ATTACHED, treat as if part of main house.) Average Daily Waste Flow 1300 State Review Required? no Perc Rate 50 (T) Design Flow (Q) = # potential bedrooms X 2 people/bedroom X gpd X 1.75 Q= 2275 Minimum tank capacity 2843.75 gallons 1 n InrO Vks jQ trvx�J Absorption Area (=Q/5 X SQRT perc rate) A = 3,217 sq. ft. of absorption area.required 208 gravelless chamber units without reduction # of Perc Holes Required: 3 t7UICK 4 9.87 A = 1608.6679 sq.ft. with 50% reductionTRENCHES 163 gravelless chamber units with reduction S-rANDAR_D A = 1608.6679 sq.ft. with 50% reductionTRENCHES .04 gravelless chamber units with reduction EQ 36 101 EQ36 units in TRENCHES OUICK4-EQ36 1609 208 SETBACK FROM WELL # of feet = 202 SETBACK FROM POND, STREAM OR IRRIGATION DITCH # of feet = 152S( � �_i SETBACK FROM DRY GULCH # of feet = 127 QUICK 4 9.2 2252.1351 sq ft 30% reduction BED 245 chamber units with reduc. 2252.1351 sq ft 30% reduction BED 145 chamber units with reduc. 180 EQ36 units in a BED 2252 352 Pitkin County Environmental Health Department Contact Log Sheet Name: Parcel iD#: Address: a 5 (0 cSnfaW i „ Date•- Person Spoken To Cornments i Action to be Taken Initials Time R -W Ct (SSA LA N -N y -k kt CL VA-ao �� 1 ' �-y'1 �� Coe -Y Carla Ostberg From: Jason Deem odeem@hpgeotech.com] Sent: Friday, July 24, 2009 1:50 PM To: Carla Ostberg Subject: RE: Zabriskie Photos Carla: We did not end up encountering the existing absorption area as was expected, so sand was not used to bring the new system up to the appropriate grade. This was noted in the December 30, 2008 Prelim. As -Built, which was included as an attachment to the June 29, 2009 final. Thanks, Jason From: Carla Ostberg [mailto:Carla.Ostberg@co.pitkin.co.us] Sent: Friday, July 24, 2009 10:55 AM To: Jason Deem Subject: RE: Zabriskie Photos Shoot — one more thing. I need an invoice or something that will document the type of sand that was used. It's on the permit. Thanks, Carla Ostberg, MPH, REHS Environmental Health Program Supervisor Pitkin County Environmental Health and Natural Resources 970-920-5438 From: Jason Deem[mailtoldeem@hpgeotech.com] Sent: Thursday, July 23, 2009 8:37 AM To: Carla Ostberg Subject: RE: Zabriskie Photos Everything looks pretty good to me. From: Carla Ostberg[mailto:Carla.Ostberg@co.pitkin.co.us] Sent: Monday, July 20, 2009 11:33 AM To: Jason Deem Subject: RE: Zabriskie Photos OK, so are you now OK w/ the items you mentioned in your letter as not having observed? • CDU sewer pipe cleanout, effluent pump, lining and piping of the two irrigation ditches on the property, encasing of effluent line on 10' of each side of the northern ditch? Carla Ostberg, MPH, REHS Environmental Health Program Supervisor Pitkin County Environmental Health and Natural Resources 970-920-5438 From: Jason Deem [mailto:jdeem@hpgeotech.com] Sent: Monday, July 20, 2009 8:25 AM To: Carla Ostberg Subject: Zabriskie Photos Carla — Here are a bunch more photos of the Zabriskie CDU. Jason Carla Ostberg From: Jason Deem Udeem@hpgeotech.com] Sent: Thursday, July 23, 2009 8:37 AM To: Carla Ostberg Subject: RE: Zabriskie Photos Everything looks pretty good to me. From: Carla Ostberg[maiIto:Carla.Ostberg@co.pitkin.co.us] Sent: Monday, July 20, 2009 11:33 AM To: Jason Deem Subject: RE: Zabriskie Photos OK, so are you now OK w/ the items you mentioned in your letter as not having observed? • CDU sewer pipe cleanout, effluent pump, lining and piping of the two irrigation ditches on the property, encasing of effluent line on 10' of each side of the northern ditch? Carla Ostberg, MPH, REHS Environmental Health Program Supervisor Pitkin County Environmental Health and Natural Resources 970-920-5438 From: Jason Deem [mailto:jdeem@hpgeotech.com] Sent: Monday, July 20, 2009 8:25 AM To: Carla Ostberg Subject: Zabriskie Photos Carla — Here are a bunch more photos of the Zabriskie CDU. Jason HP G OMNI* 4 tech HEPWORTH - PAWLAK GEOTECHNICAL June 29, 2009 Mike Conners Construction Attn: Mike Conners 0172 Horseshoe Drive Basalt, Colorado 81621 Hepworth-Pawlak Geotechnical, Inc. P. O. Drawer 1887 Silverthome, Colorado 80498 Phone: 970-468-1989 Fax: 970-468-5891 email: hpgeo4®hpgeotech.com RECENED 3UL 012009 En*WVMr+tal Healtb & NauW ResouJob No. 407 0386 Subject: Final As -Built Evaluation of Onsite Wastewater Treatment System, Existing Residence and Caretakers Dwelling Unit, 2567 Snowmass Creek Road, Pitkin County, Colorado. Dear Mr. Conners: Hepworth-Pawlak Geotechnical, Inc. has observed the installation of the final components of the Onsite Wastewater Treatment System (OWTS) for the existing five bedroom residence and two bedroom caretaker's dwelling unit (CDU) at the project site. We previously performed an evaluation of the OWTS and presented our findings in a report dated December 30, 2008, Job No. 407 0386. A copy of our December 30, 2008 As -Built Evaluation letter is provided as an attachment. During our original site inspection on June 19, 2008, the CDU sewer pipe, septic tank, effluent pipes and effluent pump had not been installed. The two irrigation ditches which run through the property had also not been lined within the required setbacks. This As -Built evaluation was performed as a supplemental service in accordance with our Professional Services Agreement to you dated November 29, 2007. Our findings and recommendations are presented in the following paragraphs. During our final inspection on June 16, 2009, we observed the OWTS components including: CDU sewer pipe cleanout, effluent pump and the lining and piping of the two irrigation ditches on the property. The CDU septic tank, sewer pipe and effluent piping were buried prior to our site visit; therefore, we could not verify the installation of these OWTS components. We were able to verify the tank size based on the etching on the tank lid. The submersible effluent pump installed was an Orenco PKP350 instead of the Orenco PEF3311 pump specified in our design. The PKP350 meets the flow and total Glenwood Springs 970-945-7988 • Parker 303-841-7119 9 Colorado Springs 719-633-5562 Mike Conners Construction June 29, 2009 Page 2 dynamic head requirements specified in our design of 10 gallons per minute at 15.8 feet of total dynamic head. We performed a pump test during our site inspection and the pump appears to work as designed. Both irrigation ditches on the property now meet the required setback to the OWTS components. The southern ditch was piped within the required setbacks and the northern ditch was lined with a PVC liner. Since the effluent line was backfilled prior to our site inspection, we were unable to verify that the line was double encased at least 10 feet on either side where it crossed under the northern ditch. A Final As -Built Site Plan is presented as Figure 1 and an As -Built Photograph Log is presented as an attachment. Based on our observations made during our site visit on June 16, 2009, it is our opinion that the OWTS meets the general intent of our design dated January 9, 2008. Please feel free to contact us if you have any questions regarding this letter. Sincerely, HEPWORTH - PAWLAK GEOTECHNICAL, INC. Jason A. Deem : Ps' 0 R Eal ; , Project Geologist Reviewed by: Ronald J. Uhle, P.E. C.C.E. Associate ¢( 8161 FSS/' ON A` EAG, Attachments: December 30, 2008, As -Built Evaluation Figure 1— OWTS Final As -Built Site Plan As -Built Photograph Log cc: Carla Ostberg, Pitkin County Environmental Health Department Job No. 407 0386 GEt- ch tech HEPWORTH - PAWLAIK GEOTECHNICAL December 30, 2008 Hepworth-Pawlak Geotechnical, Inc. P. O. Drawer 1887 Silverthorne, Colorado 80498 Phone: 970-468-1989 Fax: 970-468-5891 email: hpgeo4@1-Lpgeotech.com Mike Conners Construction Attn: Mike Conners 0172 Horseshoe Drive Basalt, Colorado 81621 Job No. 407 0386 Subject: As -Built Evaluation of Onsite Wastewater Treatment System, Existing Residence and Proposed Caretakers Dwelling Unit, 2567 Snowmass Creek Road, Pitkin County, Colorado. Dear Mr. Conners: Hepworth-Pawlak Geotechnical, Inc. has observed the installation of the Onsite Wastewater Treatment System (OWTS) for the existing five bedroom residence and proposed two bedroom caretaker's dwelling unit (CDU) at the project site. The OWTS components observed include: septic tanks, sewer pipe, effluent pipe, cleanouts, transport pipes, Infiltrator chambers, inspection ports, distribution box and the locations of all components. Our observations and recommendations are presented in the following paragraphs. The location of the absorption area, distribution box and layout of the transport pipes were modified from our revised OWTS design dated January 9, 2008, Job No. 407 0386. Due to the changes in the OWTS component locations, the old absorption area was left primarily undisturbed and imported sand was not necessary. It is our opinion that the changes will not alter the effectiveness of the OWTS. Based on observations made during our June 19, 2008 site visit, the components meet all the required setbacks for an OWTS except for the required setback to an irrigation ditch. Our design stated that the irrigation ditches on the property must be lined or piped within the required 152 foot setback from the OWTS absorption area. At the time of our site visit, the irrigation ditches had not been lined. Glenwood Springs 970-945-7988 o Parker 303-841-7119 o Colorado Springs 719-633-5562 Mike Conners Construction December 30, 2008 Page 2 The layout of the OWTS absorption area was also modified from our design which specified seven rows of 24 Infiltrator Quick 4 Standard chambers in each row for a total of 168 chambers. The layout was changed to six rows of chambers with 25 chambers per row and one row with 21 chambers for a total of 171 chambers. It is our opinion that the layout changes will not impact the effectiveness of the OWTS. In addition, the rows which contain 25 chambers were partially backfilled at the time of our site visit and we could not count the chambers. However, the number of chambers was verified by measurement to the observation ports. An OWTS Preliminary As -built Site Plan and an As -Built Photograph Log are presented as attachments to this letter. We contacted Carla Ostberg at the Pitkin County Environmental Health Department on October 8, 2008 to request if the irrigation ditch setbacks could be modified due to the recent changes to the Pitkin County OWTS regulations. Per our conversation with Ms. Ostberg, this would only be possible if a new OWTS design was submitted and the system was re -permitted. Subsequently, our current OWTS design is restricted by the prior Pitkin County OWTS regulations. The CDU septic tank, sewer pipe, effluent pipes and submersible effluent pump were not yet installed at the time of our site inspection. We should be contacted to observe the installation of these components once they are installed prior to backfill. We must also observe the irrigation ditches to make certain that the ditches have been either lined or piped within the required setbacks. Based on our observations made during our site visit, it is our opinion that the OWTS meets the general intent of our design dated January 9, 2008; however, a final As -Built compliance certification cannot be issued until we observe the CDU components and the irrigation ditches are inspected. Please contact us at least 48 hours prior to the day that you will be ready for the inspections. Future inspections are not covered under these As -Built Inspection fees. Additional site inspections will be billed on a time and materials basis based on our fee schedule at the time of the visit. Job No. 407 0386 GeH&eCh Mike Conners Construction December 30, 2008 Page 3 Please feel free to contact us if you have any questions regarding this letter. Sincerely, HEPWORTH - PAWLAK GEOTECHNICAL, INC. Jason A. Deem Project Geologist Reviewed by: Ronald J. Uhle, P.E. C.C.E. Associate Attachments: Figure 1 — OWTS Preliminary As -Built Site Plan As -Built Photograph Log Job No. 407 0386 GEPOtech AS -BUILT PHOTOGRAPH LOG JUNE 19, 2008 Photograph 1: View looking east/southeast towards northern half of absorption area. Photograph 2: View looking east at observation port. Photograph 3: View looking east/southeast at southern two rows of absorption area showing a row with 25 chambers and a row with 21 chambers. Job No. 407 0386 GecR h AS -BUILT PHOTOGRAPH LOG JUNE 19, 2008 Photograph 4: View looking north at distribution box and corresponding piping. Photograph 5: View looking west at distribution box, absorption area and effluent piping. Photograph 6: View south looking at effluent piping from distribution box. Job No. 407 0386 GecRec.- 'h AS -BUILT PHOTOGRAPH LOG JUNE 19, 2008 Photograph 7: View looking north at effluent piping from distribution box. Photograph 8: View looking west at effluent piping connection to chamber row. Photograph 9: View looking east at effluent piping and septic tanks. Job No. 407 0386 G9&eCh AS -BUILT PHOTOGRAPH LOG JUNE 19, 2008 Photograph 12: Proposed location (in gravel area) of the care taker's unit septic tank and distance from irrigation ditch. Job No. 407 0386 G ReC I AS -BUILT PHOTOGRAPH LOG JUNE 16, 2009 Photograph 1: View looking down at the second chamber of the CDU septic tank and the pump before test. Photograph 2: View looking down CDU septic tank during pump test. Photograph 3: View looking down at first chamber of CDU septic tank showing inlet tee and tank size on lid. Job No. 407 0386 Ge5tech AS -BUILT PHOTOGRAPH LOG JUNE 16, 2009 Job No. 407 0386 Photograph 4: View looking west showing the piped portion of the southern irrigation ditch. AS -BUILT PHOTOGRAPH LOG JUNE 16, 2009 Photograph 5: View looking west/southwest at the southern irrigation ditch lined with PVC liner. Photograph 6: View looking east at the northern lined ditch and the distance from the absorption area. Job No. 407 0386 Ge Rech AS -BUILT PHOTOGRAPH LOG JUNE 16, 2009 Photograph 7: View looking east where the effluent line from the CDU runs under the lined irrigation ditch. Job No. 407 0386 G99tec't &tech G 0WAV* HEPWORTH - PAWLAK GEOTECHNICAL January �, 2008 Mike Conners Construction fo Hepworth-Pawlak Geotechnical, Inc. P. O. Drawer 1887 Silverthome, Colorado 80498 Phone: 970-468-1989 Fax: 970-468-5891 email: hpgeo4®hpgeotech.com Attn: Mike Conners 0172 Horseshoe Drive Basalt, Colorado 81621 Job No. 407 0386 Subject: Revised Individual Sewage Disposal System Design, Existing Residence and Proposed Caretakers Dwelling Unit, 2567 Snowmass Creek Road, Pitkin County, Colorado. Dear Mr. Conners: As requested, Hepworth-Pawlak Geotechnical, Inc. has redesigned an Individual Sewage Disposal System (ISDS) based on the percolation rate of the subsoils for the existing residence and proposed caretakers dwelling unit (CDU) located at 2567 Snowmass Creek Road in Pitkin County, Colorado. We previously submitted an ISDS design for the subject site on December 31, 2007, Job No. 407 0386; however, you requested that the ISDS absorption area be relocated within the septic activity envelope. The study was conducted in accordance with our written agreement to Mike Conners Construction dated November 29, 2007. The data obtained and our ISDS design recommendations based on the proposed construction and subsurface conditions encountered are presented in this report. Site Conditions: The project site slopes gently down to the northwest. The site is approximately 39 acres in size. The site consists of an existing residence, garage and barn. The existing residence is currently undergoing renovations and will consist of a total of five bedrooms. A CDU will be constructed over the existing garage and will be designed for two bedrooms. The residence and CDU will share an ISDS absorption area. Water service will be provided to the residence and CDU by an existing on-site water well. An existing ISDS absorption bed and septic tank for the main residence is located on the property. The approximate locations are shown on Figure 1. A small portion (about 21 Glenwood Spriggs 970-945.7988 0 Parker 303-841.7119 9 Colorado Springs 719-633-5562 Y A0 Mike Conners Construction January 9, 2008 Page 2 chambers) of the new ISDS absorption area will be located in the area of the existing absorption area. The new ISDS absorption area excavation should extend to below the existing aggregate and biomat or other obvious signs of impact from the existing absorption area. Excavated material should be dried on-site and then properly disposed of at a solid waste disposal facility. To maintain a maximum cover soil of approximately 3 feet, the grade of the excavation in the existing absorption area may be elevated by .tt 1 y placing concrete sand in the excavation. The filter sand should be placed in loose lifts not ' `A'V,,U to exceed 1 foot thick. Each lift should be compacted by wheel rolling or bucket packing prior to placement of the next lift. If water is available each lift may be wetted prior to compaction to decrease future settlement of the filter sand. Once the existing tank is unhooked from the residence it should be pumped dry. Following pumping, the tank x should either be removed or the bottom of the tank perforated and the tank backfilled with at't on-site or imported soil. A pond and two irrigation ditches are present on the property. Given the design flows for the shared ISDS, a 152 foot minimum setback is required from the ISDS absorption area to the ditches and pond. Subsequently, there is not enough space on this portion of the property to accommodate the required setback to the ditches; therefore, the ditches must L be lined with an impermeable liner or piped within the required setback area. A 20 mil ' fJ PVC liner protected on the top and bottom with a geotextile cushion is suitable for this application. Percolation Testing and Subsurface Conditions: Percolation tests were conducted on November 15, 2007 by our Glenwood Springs Office to evaluate the percolation rate of the natural soils at the site. Two profile pits and six percolation test pits were excavated at two different locations on the site. Profile Pit 2 and percolations test holes 4, 5 and 6 were used for this design. The percolation test results for the three test holes were 8, 60 and 40 minutes per inch, respectively. For design purposes, the 8 minutes per inch reading was not used given the variation compared to the other two test hole results. Therefore, an average percolation rate of 50 minutes per inch was used for this design. Job No. 407 0386 HP G99tech Mike Conners Construction January 9, 2008 Page 3 The percolation test report dated November 30, 2007, Job No. 107 0792 is provided as an attachment to this report. ISDS Analysis: Based on the subsurface conditions encountered and the percolation test results, the tested area is suitable for an ISDS utilizing the shallow soils for the treatment and dispersal of effluent. A site plan showing the proposed ISDS, existing water well, existing structures, water courses and the minimum horizontal setback distances of site features relative to the ISDS components is shown on Figure 1. The ISDS was designed for a total of seven bedrooms. An average flow of 100 gallons per person per day was used for the five bedrooms in the main residence and an average flow 75 gallons per person per day was used for the two bedrooms in the CDU. This equates to a total design flow for the shared ISDS absorption area of 2,275 gallons per day. All materials and installation should meet the requirements of the current Pitkin County Individual Sewage Disposal System Regulations. Septic and Dosing Tanks: A two chamber 1,000 gallon Copeland Concrete septic tank, or equivalent, will be used for primary treatment of sewage from the CDU. A submersible effluent pump will be installed in the second chamber of the tank. Sewage will gravity feed from the CDU to the septic tank and effluent will be dosed to a single chamber 1,500 gallon Copeland Concrete septic tank, or equivalent. The 1,500 gallon tank will be the first of two septic tanks that will be used for primary treatment of sewage from the main residence. Sewage will gravity feet from the main residence to the 1,500 gallon septic tank. Effluent from the main residence and the CDU will then gravity feed to a 1,000 gallon single chamber Copeland Concrete septic tank, or equivalent. An effluent filter will be installed at the outlet of the second tank. Screened effluent will then gravity flow to a distribution box and the absorption trenches. If the septic tank access riser lids will be installed at grade, with no backfill cover, then the lids should be insulated with foam insulation board to provide frost protection. The sewer pipe inlet tee in the first chamber of the septic tank should be installed beneath the Job No. 407 0386 Mike Conners Construction January 9, 2008 Page 4 access lid of the first chamber of the septic tank so that it can be reached for service should it become clogged. A high water alarm switch should be installed in the dosing chamber of the CDU septic tank 3 to 6 inches above the upper float position. The high water alarm will provide audio and visual warning of a high water condition in the tank and should be placed inside or on the dwelling where it will be readily seen or heard. The PVC handle on the effluent filter should be extended up to within reach of the dose tank access riser lid. This will allow for easy access and maintenance of the filter. Approximately 2 feet of soil backfill cover should be placed over the tops of the septic tanks to allow for easy access and frost protection. For maintenance reasons, deep tank installations should be avoided and we should be contacted to evaluate this ISDS design should it appear that a deep tank installation involving more than 4 feet of backfill soil over the top of the septic tanks may be required. CDU Dosing Pump: An Orenco PEF3311, 115 volt, submersible effluent pump with a 2 inch diameter discharge assembly, or equivalent, is suitable for this application to move effluent from the CDU septic tank to the first tank for the main residence. For design purposes, it was assumed that the elevation difference from the dosing pump intake to the absorption area manifold is not more than 15 feet and that the length of the effluent transport pipe does not exceed 270 feet. The pump must be capable of providing a total flow rate of 10 gallons per minute at 15.8 feet of total dynamic head. The dosing pump will be controlled by a control panel and a system of float switches. The float switches should be set to provide a dose of about 175 gallons. The actual dose volume is about 131 gallons, assuming an effluent drainback volume of about 44 gallons in the transport pipe. At the design flow, the effluent pump will dose effluent to the first main residence septic tank about four times per day. Sewer and Effluent Piping: The sewer line from the residence and CDU to the septic tank should not be less than the diameter of the building drain and not less than 4 inches Job No. 407 0386 G 9tech Mike Conners Construction January 9, 2008 Page 5 in diameter and will service all levels of the buildings. Soil backfill beneath the sewer pipe must be adequately bedded and compacted to prevent settlement of the pipe. The sewer pipe should be installed in landscape areas with at least 40 inches of soil backfill covering the pipe, or the pipe should be insulated on the top and sides with 2 inch thick rigid foam insulation board for frost protection. Beneath driven surfaces, we recommend using Schedule 40 PVC sewer pipe and the pipe be insulated if it will be installed with less than 4 feet of backfill soil cover. We recommend the use of Schedule 40 PVC pipe between the residence and CDU and the septic tank, though this is not required by local regulations. The portion of the sewer pipe extending from 5 feet outside the building foundation should have a slope of at least 2%. Cleanout pipe(s) should be installed in the sewer line adjacent from the building foundation, adjacent to the inlet of the septic tank, where the sewer pipe bends at 90 degrees or more and at least one cleanout should be installed at least every 100 linear feet of non -pressurized sewer or effluent pipe throughout its length. We recommend that a straight section of pipe be installed between the residence and CDU foundation and the septic tanks. Any required 90 degree bends in the sewer pipe should be accomplished through the use of a series of 45 degree smooth elbows or a 90 degree long sweep to help prevent clogging of the pipe. The 2 inch diameter schedule 40 PVC transport pipe from the CDU should be sloped at 2% minimum to drain back to the dose chamber between doses. It is critical that the effluent transport pipe be properly bedded to reduce settlement which could cause standing effluent to freeze in the pipe. The effluent transport line from the CDU will cross beneath the northernmost irrigation ditch that crosses the property. The effluent transport pipe must be double encased 10 feet on each side of the ditch as specified in Note 1 on Figure 1. Job No. 407 0386 Mike Conners Construction January 9, 2008 Page 6 Absorption Area: The soil absorption area is designed to be approximately 1,658 square feet and will consist of seven trenches consisting of 24 Infitrator Quick 4 Standard chambers in each trench for a total of 168 chambers. Each chamber was given 9.87 square feet of absorption area. A 50% reduction in field size was applied for use of Infitrator Quick 4 Standard chambers in a trench configuration. Absorption area calculations are shown on Figure 2. The absorption area trenches should be excavated to the approximate depths shown on Figure 4. Care must be taken during installation to ensure that the soils exposed in the bottoms and sidewalls of the trench excavations are not compacted. Once the trench excavations are complete they should be left open, if necessary, to allow the soils to air dry prior to placement of chambers and distribution pipes. Once the soils have air dried, if necessary, the bottoms and sidewalls of the excavations should be scarified prior to placement of the chambers. A distribution box with at least seven outlets and one inlet will be used to equally distribute effluent to the absorption trenches. We recommend that the soil beneath the distribution box be adequately compacted to reduce settlement of the box or the box may be set on a small level concrete pad. It is critical that the box be installed level and that the flow lines of the outlets are at equal elevations to ensure that effluent is equally distributed to each trench. Speed levelers should be installed in the effluent manifold pipe outlets within the distribution box and should be adjusted to provide even distribution to each outlet. If desired, the distribution box may be installed within a vault for easy access. The on-site soils can be used as backfill over the chambers and should be graded to deflect surface water and precipitation away from the absorption area. We recommend the soil backfill be re -vegetated as soon as possible with a mountain meadow grass mix or suitable equivalent. It is important not to plant large vegetation or vegetation with invasive roots in and around the absorption area and manifold piping as the roots may damage piping and chambers. Job No. 407 0386 G95tec h Mike Conners Construction January 9, 2008 Page 7 Combination air vent/inspection ports should be installed at each end of the first, fourth and seventh trenches at minimum. The ports should be constructed of 4 inch diameter PVC pipe installed into the knockouts provided on the tops of the Infiltrator chambers. The ports should extend a minimum of 8 inches above the finished ground surface and should have ventilated removable caps. The absorption area manifold and distribution piping layout is shown on Figure 3. All materials used and installation methods should meet the requirements of the Pitkin County Individual Sewage Disposal System Regulations, Revised 2001. Subsurface Drainage: No free water was encountered in the profile pit when observed on November 14, 2007 and it is our opinion that a subsurface drain will not be required. If free water is encountered in any excavations on the site we should be notified to re- evaluate the need for a subsurface drain to protect the absorption area. ISDS Maintenance: The on-site ISDS will require maintenance. The level of maintenance will vary with the complexity of the system and water use habits of the users. We recommend that fats, oils, bath oils, greases, paint, solids, water softener backwash solution, water from hot tubs and other constituents that can clog and foul collection and disposal equipment are not disposed of in the residence drains. The absorption area and any areas directly up gradient of it should not be watered by lawn irrigation systems or other means as the soils may become hydraulically overloaded. Septic tanks and other treatment tanks should be pumped whenever the sludge occupies 1/3 of the liquid capacity of the first chamber of the septic tank. The high water alarm float switch should be checked at least once per year to ensure that it is working properly. In addition, the effluent filter should be checked for clogging at least once per year and cleaned as necessary. We recommend that an operation and maintenance manual be developed for the ISDS. The ISDS should be operated and maintained as stipulated in the manual. If you desire our services, we can prepare the operation and maintenance manual for the on-site ISDS. Job No. 407 0386 Ggtech Mike Conners Construction January 9, 2008 Page 8 Limitations: This design has been conducted in accordance with generally accepted engineering principles and practices in this area at this time. We make no warranty either express or implied. The conclusions and recommendations submitted in this report are based upon the data obtained from the profile pit and percolation test holes excavated at the approximate locations and depths indicated in the attached Percolation Testing Report, the proposed type of construction, and our experience in the area. Our findings include interpolation and extrapolation of the subsurface conditions identified at the profile pit and percolation test holes and variations in the subsurface conditions may not become evident until excavation is performed. If conditions encountered during construction appear different from those described in this report, we should be notified at once so re-evaluation of the recommendations may be made. Based on site reconnaissance, it is our opinion that the designed location of the ISDS does not violate any setback requirements of the current Pitkin County Environmental Health Department's ISDS regulations. We recommend that the position of the ISDS components, proposed existing residence, existing water well and setback requirements be verified in the field by a Professional Land Surveyor licensed in the State of Colorado. This report has been prepared for the exclusive use by our client for the ISDS design submittal process. We are not responsible for technical interpretations by others of our information. As the project evolves, we should provide continued consultation and field services during ISDS construction to review and monitor the implementation of our recommendations, and to verify that the recommendations have been appropriately interpreted. Pitkin County requires that an As -Built evaluation of engineered ISDS designs be performed by the ISDS engineer. The As -Built evaluation is not included in our fees for the original scope of services in our Professional Services Agreement dated November 29, 2007. These services will be performed for an additional fee. We should be contacted to perform the ISDS As -Built evaluation the day before you are Job No. 407 0386 Ge9teCt"t Mike Conners Construction January 9, 2008 Page 9 ready for the evaluation. You must obtain the required ISDS permit from Pitkin County prior to our As -Built inspection. Prior to evaluation, all ISDS components should be installed including: sewer pipe, effluent pipe, septic and dosing tanks, effluent filter, inlet and outlet tees, pump, Infiltrator chambers and distribution and manifold piping. No components of the ISDS should be backfilled prior to our performing the ISDS As -built evaluation. Please contact us for any necessary revisions or discussion after review of this report by the Pitkin County Environmental Health Department. If you have any questions, or if we may be of further assistance, please let us know. Sincerely, HEPWORTH - PAWLAK GEOTECHNICAL, INC. J4 Jason Deem Qjj®�,daR Project Geologist Reviewed by: Ronald J. Uhle, P.E. C.C.E Associate `,810NA\ � ,Y\ 1111111, , Attachments: Figures 1 through 4 Orenco PEF3311 Pump Performance Curve November 30, 2007 Percolation Testing Report Job No. 407 0386 Gg teCh I N FI LTRATO1 INFILTRATOR QUICK 4 STANDARD CHAMBERS. SEVEN ROWS OF 24 CHAMBERS (168 TOTAL) INSTALLED LEVEL DISTRIBUTION BOX WITH ONE INLET AND SEVEN OUTLETS INSTALLED LEVEL :ANOUT ;H DIAMETER PVC (SDR 35 OR IVALENT) EFFLUENT TRANSPORT SLOPED AT 2% MIN. TO DRAIN TO RIBUTION BOX 3DR 35 OR FTRANSPORT I. TO DRAIN TO 1567 SNOWMASS CREEK ROAD AN VIEW OF ABSORPTION AREA I C�ecPtech HEPWORTH-PAWLAK GEOTECHNICAL NOT TO SCALE 1 4070386 1 FIGURE 3 1 FOOT MIN. AND 3MAX. COVER SOIL OVER INFILTRATOR CHAMBERS SLOPED TO DEFLECT SURFACE WATER RUN-ON AND RUN-OFF 4 INCH DIAMETER PVC VENT INSTALLED IN KNOCKOUTS PROVIDED IN INFILTRATOR CHAMBER END PLATES. MIN. 8 INCH STICKUP ABOVE FINISHED GRADE. APPROXIMATE EXISTING GROUND SURFACE INFILTRATOR QUICK 4 BASE OF TRENCH EXCAVATIONS STANDARD CHAMBER SHOULD BE LEVEL AND SCARIFIED PRIOR TO CHAMBER PLACEMENT U MIN. BETWEEN EACH ROW OF INFILTRATOR CHAMBERS APPROXIMATE SCALE: 1 INCH = 4 FEET CUTS AT UPHILL SIDE OF ABSORPTION TRENCHES SHOULD NOT EXCEED ABOUT 4 FEET Gecftech 2567 SNOWMASS CREEK ROAD CROSS SECTION OF ABSORPTION AREA 4070386 1 FIGURE 4 l" *A/ `'00 ISDS ABSORPTION AREA CALCULATIONS In accordance with Article 8, Pitkin County Environmental Health Department's Individual Sewage Disposal System Regulations, effective April 15, 2003, the absorption area was calculated with the following equation: Where: A= Q(t°.$) 5 A = minimum absorption area in square feet Q = design flow t = soil percolation rate in minutes per inch = 50 constant = 5 Q =(gpd/person/day)(bedrooms)(2)(1.75) Where: 100 = (constant) estimated average gallons of flow per day per person for a home with living space between 2001 and 6000 square feet (main house) 75 = (constant) estimated average gallons of flow per day per person for a home with living space between 2000 square feet or less (CDU) 5 = number of bedrooms at 100 gpd 2 = number of bedrooms at 75 gpd 2 = (constant) estimated persons per bedroom 1.75 = (constant) calculated design flow is 175% of average daily flow Main House Q = 1,750 gallons per day CDU Q = 525 gallons per day Q Total = 2,275 gallons per day A= 3,217 square feet A 50% reduction in field size will be allowed for use of Infiltrator chambers in a trench configuration. A= 1,609 square feet Infiltrator Quick 4 Standard chambers will be utilized in the absorption area. Each chamber will be given 9.87 fl2 of area. Minimum Number of Chambers = 163 The absorption area will consist of seven rows of 24 Infiltrator Quick 4 Standard chambers for a total of 168 chambers or approximately 1,658 square feet of absorption area. 40,70386 'tech 2567 SNOWMASS CREEK ROAD FIGURE 2 HEPWORTH-PAWLAKGEOTECHNICAL ABSORPTION AREA CALCULATIONS Pump Selection for a Non -Pressurized System Head Loss Through Distributing Valve 0.0 feet Design Flow Rate 10 gpm Distributing Valve Model None Lift to Discharge 15.0 feet Transport Length 270.0 feet Transport Line Size 2.00 inches Transport Pipe Class/Schedule 40 Discharge Assembly Size 2.00 inches Flow Meter None inches 'Add-on' Friction Losses 0.0 feet Head Loss Through Distributing Valve 0.0 feet Head Loss in Transport Pipe 0.6 feet Head Loss Through Discharge 0.2 feet Head Loss Through Flow Meter 0.0 feet 'Add-on' Friction Losses 0.0 feet Total Flow Rate 10.0 gpm TDH 15.8 feet 12 2567 SNOWMASS CREEK ROAD PITKIN COUNTY, COLORADO UV Effluent Pumps PEF, PKP Series — PEF150 1/3 hp to 1-1/2 hp 90 i 80 PEF100 70 1 60 I PEF75 - � 50 I PEF50 40 30 i i 20 I i 10 I PKP350 PEF3311' 0 10 20 30 40 50 60 70 80 90 Net Discharge, gpm Orenco Systems Incorporated 814AIRWAYAVENUE SUTHERLIN, OREGON 97479 to TOLLFREE 1800)348-9843 TELEPHONE (541)4594449 FACSIMILE: (541) 459.2884 www.orenco.com • OiPt4 h HEPWORTH - PAWLAK GEOTECHNICAL November 30, 2007 Mike Conners Construction Attn: Mike Conners 0172 Horseshoe Drive Basalt, Colorado 81621 Heph-Pawlak Geotechnical, Inc. 5020 County Road 154 Glenwood Springs, Colorado 81601 Phone: 970-945-7988 Fax: 970-945-8454 email: hpgeo@hpgeotech.com Job No. 107 0792 Subject: Percolation Testing, Existing Residence and CDU, 2567 Snowmass Creek Road, Pitkin County, Colorado Dear Mr. Conners: As requested by you, Hepworth - Pawlak Geotechnical, Inc., performed percolation testing at the subject site. The work was done in accordance with our agreement for professional services to Mike Conners Construction, dated October 11, 2007. A profile pit and three percolation test holes were excavated at each of the residence and CDU sites on November 15, 2007 at the locations shown on Figure 1. The subsoils exposed in the Profile Pits consisted of about 1 to 1'h feet of topsoil overlying clayey silty sandy gravel with cobbles and small boulders to the bottom pit depths of 8 feet at Profile Pit 1 and 8'h feet at Profile Pit 2. The results of a gradation analysis performed on a sample of very gravelly loamy sand (minus 5 inch fraction) obtained from the site are presented on Figure 2. No free water or evidence of a seasonal perched water table was observed in the pits and the soils were slightly moist to moist. Slotted PVC pipe was placed in the pits for future monitoring of water levels. Percolation test holes were hand dug and soaked with water on November 14, 2007. Percolation testing was conducted on November 15, 2007, by a representative of Hepworth - Pawlak Geotechnical, Inc. The percolation test results are summarized on Table 1. The percolation test rates at the residence ranged from 8 to 60 minutes per inch and averaged 36 minutes per inch. The percolation tests at the CDU site ranged from 15 to 40 minutes per inch and averaged 23 minutes per inch. The average of all percolation tests was about 30 minutes per inch. Based on the subsurface conditions encountered and the percolation test results, the tested areas should be suitable for an on site waste disposal Parker 303-841-7119 • Colorado Springs 719-633-5562 e Silverthorne 970-468-1989 S Mike Conners Construction November 30, 2007 Page 2 systems. Pitkin County requires that a professional engineer design the septic disposal system. If you have any questions or need further assistance, please call our office. Sincerely, HEPWORTH - PAWLAK GEOTECHNICAL, INC. �uisE. Eller Reviewed by: Daniel LEE/va attachments Figure 1 — Location of Percolation Test Holes Figure 2 — Gradation Test Results Table 1 — Percolation Test Results cc: HP Geotech — Attn: Jason Deem Job No. 107 0792 HG95tech APPROXIMATE SCALE 1"=60' Sip cR�F� 9p QP 3 P2 � BARN LA Q P1 E PROFILE PIT 1 PROFILE PIT 2 994 GARAGE/ CDU i YV / i QP4 / / LP5 0 / P6 / 996 I /_-- 998 1 JCE / 1000 / POf LOCATION OF PERCOLATION 107 0792 TEST HOLES Figure 1 _ HEPwoir PANftAK GEM=IibfICAL HEPWORTH-PAWLAK GEOTECHNICAL, INC. TABLE 1 PERCOLATION TEST RESULTS CDU SITE JOB NO. 107 0791 Page 1of3 HOLE NO. HOLE DEPTH (INCHES) LENGTH OF INTERVAL (MIN) WATER DEPTH AT START OF INTERVAL (INCHES) WATER DEPTH AT END OF INTERVAL (INCHES) DROP IN WATER LEVEL (INCHES) AVERAGE PERCOLATION RATE (MIN./INCH) P-1 42 i 10 81/8 7 1/2 5/8 15 71/2 7 1/2 7 63/4 1/4 63/4 61/4 1/2 61/4 53/4 1/2 53/4 5 1/4 1/2 5 1/4 43/4 1/2 43/4 41/4 1/2 41/4 4 1/4 4 3 1/2 1/2 3 1/2 23/4 3/4 23/4 2 3/4 P-2 48 j 10 water added 53/4 47/8 7/8 15 47/8 41/4 5/8 41/4 33/4 1/2 33/4 31/4 1/2 3 1/4 23/4 1/2 23/4 21/4 1/2 2 1/4 13/4 1/2 1 3/4 3/4 1 61/4 5 1/2 3/4 5 1/2 43/4 3/4 43/4 41/4 1/2 41/4 3 1/2 3/4 Note: Percolation test holes were hand dug and soaked on November 14, 2007. Percolation tests were conducted on November 15, 2007. The average percolation rates were based on the last three readings of each test. HEPWORTH-PAWLAK GEOTECHNICAL, INC. TABLE 1 PERCOLATION TEST RESULTS CDU & RESIDENCE SITES JOB NO. 107 0792 Page 2of3 HOLE NO. HOLE DEPTH (INCHES) LENGTH OF INTERVAL (MIN) WATER DEPTH AT START OF INTERVAL (INCHES) WATER DEPTH AT END OF INTERVAL (INCHES) DROP IN WATER LEVEL (INCHES) AVERAGE PERCOLATION RATE (MIN./INCH) P-3 43 10 71/4 6 1/2 3/4 40 6 1/2 6 1/2 6 53/4 1/4 53/4 5 1/2 1/4 5 1/2 5 1/4 1/4 5 1/4 5 1/4 5 43/4 1/4 43/4 41/2 1/4 41/2 41/4 1/4 41/4 4 1/4 4 33/4 1/4 33/4 3 1/2 1/4 P-4 36 i 10 Water added Water added 6 1/2 3 3 1/2 8 3 2 1 2 1/4 13/4 9 1/4 6 3 1/4 6 41/4 1 3/4 41/4 3 1 1/4 3 2 1 2 1/2 1 1/2 9 1/4 73/4 1 1/2 73/4 61/2 11/4 6 1/2 5 1/2 1 Note: Percolation test holes were hand dug and soaked on November 14, 2007. Percolation tests were conducted on November 15, 2007. The average percolation rates were based on the last three readings of each test. HEPWORTH-PAWLAK GEOTECHNICAL, INC. TABLE 1 PERCOLATION TEST RESULTS RESIDENCE SITE JOB NO. 107 0792 Page 3 of 3 HOLE NO. HOLE DEPTH (INCHES) LENGTH OF INTERVAL (MIN) WATER DEPTH AT START OF INTERVAL (INCHES) WATER DEPTH AT END OF INTERVAL (INCHES) DROP IN WATER LEVEL (INCHES) AVERAGE PERCOLATION RATE (MIN./INCH) P-5 40 j j 10 71/2 71/4 1/4 60 71/4 71/4 0 71/4 7 1/4 7 7 0 7 67/8 1/8 67/8 63/4 1/8 63/4 6 1/2 1/4 6 1/2 6 1/2 0 6 1/2 63/8 1/8 63/8 61/4 1/8 61/4 6 1/4 6 57/8 1/8 P-6 42 j I j j 10 7 6 1/2 1/2 40 6 1/2 61/4 1/4 61/4 53/4 1/2 53/4 5 1/2 1/4 5 1/2 5 1/4 1/4 51/4 5 1/4 5 43/4 1/4 43/4 41/2 1/4 41/2 41/4 1/4 41/4 4 1/4 4 33/4 1/4 33/4 3 1/2 1/4 Note: Percolation test holes were hand dug and soaked on November 14, 2007. Percolation tests were conducted on November 15, 2007. The average percolation rates were based on the last three readings of each test. MEMORANDUM To: Michael Kraemer, Planning Department From: Carla Ostberg, Environmental Health & Natural Resources Department Date: August 17, 2007 Re: Zabriskie Activity Envelope, Site Plan Review and Special Review for a Caretaker Dwelling Unit (PID 2645-022-00-005; Case P098-07) SUMMARY OF RELEVANT PARTS OF APPLICATION: The applicant is proposing to add approximately 1,787 square feet of floor area to the existing residence and to add a 1,000 square foot caretaker dwelling unit (CDU) within an existing barn on the property. DISCUSSION: The Pitkin County Environmental Health & Natural Resources Department has reviewed the details of the Zabriskie Activity Envelope application under the authority of the Pitkin County Land Use Code and the Pitkin County ISDS Regulation and has the following comments. On August 10, 2007, Carla Ostberg conducted a site visit to the property. Warren Palmer, representative of the applicant, described existing conditions and future plans for the onsite wastewater treatment system(s) and water supply that will serve both residences. --- WATER SUPPLY: The existing residence is currently served by a private well. No information on that well was provided in the application. In connection with any Septic System Permit for this property, this Department will require proof of an adequate legal water supply, as defined in the then -current Pitkin County regulations. The applicant should be sure to consider this issue in connection with the CDU, as some well permits are issued for only one single family dwelling unit. --- SEWAGE TREATMENT AND COLLECTION: The existing septic system on the property was permitted and installed in 1988. This system was designed to serve four bedrooms in the main house and one bedroom in a future CDU, for a total of five bedrooms. The "future CDU" was never constructed. A 1250 gallon septic tank (designed to accommodate four bedrooms) and a 1050 square foot sand filter (designed to accommodate five bedrooms) serve the exiting four bedroom house. Although the permit was not signed by the former Environmental Health Department's staff, notes on the permit indicate a final inspection was conducted. Printed on Recycled Paper Floor plans for the remodel of the main house show five potential bedrooms, as defined in the current Pitkin County ISDS Regulation. The absorption area was sized to accommodate five bedrooms; however, the tank was only sized to accommodate four bedrooms. Alternatives: If the applicant intends to use the existing system (tank and/or absorption area) to serve the remodeled residence, the system must be evaluated by a Professional Engineer. Neither the permit nor the accompanying documents contain information on the soils or high groundwater levels. Depth of sand filter media is also unclear. Given the potential for high groundwater in this area, an eight foot profile hole should be excavated in the vicinity of the existing system to assure the system is maintaining a four foot separation between the bottom of the system and high groundwater. Documentation of this evaluation must be provided to this Department. 2. If a new system for the main residence will be designed, the proposed Activity Envelope (for purposes of placement of the onsite wastewater treatment system) should be sufficient. The proposed Activity Envelope for the CDU's onsite wastewater treatment system should also be sufficient. All onsite wastewater treatment systems installed within Pitkin County require Septic System Permits issued by the Environmental Health & Natural Resources Department, and must comply with the County's ISDS regulations. The County cannot issue a Building Permit until a Septic System Permit has been obtained, or the exiting system has been assessed as suitable to serve the proposed development. Printed on Recycled Paper Pitkin County Environmental Health Department Contact Log Sheet Name: Ua Parcel ID#: Address: Date Person S oken To Comments / Action to be Taken Initials ITime AN D aD is L� Z Z, 0 77 Cl • Pitkin County EnironmentgHealf� December 23, 2004 Jon and Sandy Uele 2345 Snowmass Creek Rd Snowmass, CO 81654 Dear Mr & Mrs. Uele, I investigated your concern about mysterious digging and stock piling of moist matter by your neighbor, Jack and -Nicole Lewis, at 2567 Snowmass Creek Rd. The stock piling occurred on their property but in the vicinity of the well on the property you are renting at 2345 Snowmass Ck Rd. You expressed a concern that the Lewis sewage treatment system might have been compromised during the earthmoving and that your well might become contaminated by the moist matter. On December 14th I arranged a site visit to the property of your neighbor, Jack & Nicole Lewis. I observed that the digging in progress was to remove silt from the bottom of a drained pond. This was the moist matter that they were piling.on their own property near your property line. I also observed the area of their septic tank and the engineer designed sand filter. •Nv digging was occurring close to this area. I determined that the Lewis' are not violating any health, regula If you have any question, please do not hesitate to call me at 9: Sincerely, Nancy MacKenzie Sr. Environmental Speciz Cc: John Ely, County Attorney, .Joanna Schaffner, Community Development Bud Eylar, County. Engineer Jack & Nicole Lewis 0405 Castle Creek Road, Suite 10 Aspen, Colorado 81611 (970) 920-5070 fax 920-5077 www.pitkingov.com •WR15-11ev. 7 00�a���Q a . Mv" LX COLORADO DIVISION OF WATER RESOURCES 818 Centennial Bldg., 1313 Sherman St., Denver. Colorado 80203 Application be complete whgre applicable. Type or print in BLACK- MAR n 9 9% INK. No overstrikes or erasures unless d11TER Rf.80f)RM initialed. TrATE . U)UIR G" (1) APPLICANT - mailing address NAME UP-; F!' &t� -'Oa PERMIT APPLICATION FORM (A) A PERMIT TO USE GROUND WATER (g ) A PERMIT TO CONSTRUCT A WELL (J) A PERMIT TO INSTALL A PUMP 33-09-88 2:43 F { ) REPLACEMENT FOR NO. - 032422 60.W ( ) OTHER FW11 WATER COURT CASE NO. TTt 61).00 STREE,TIlP O• X $-!y, ! 56 CITY tN�OC1G Cie IL �� b 2 ^ (State) 1(Zip) TELEPHONE NO. 303 9a3 Lio�j�a (2) LOCATION OF PROPOSED WELL County of the N UI.Z %, Section _a ____ Twp. 9 -S . Rng. _-Lb— l�.b-•--P.M. IN.S) 1E.W) (3) WATER USE AND WELL DATA Proposed maximum pumping rate (gpm) i5 Average annual amount of ground water to be appropriated (acre-feet): Number of acres to be irrigated: ` Proposed total depth (feet): 60 - Aquifer ground water is to be obtained from: Grs;�ue4 4• Owner's well designation GROUND WATER TO BE USED FOR: ( ) HOUSEHOLD USE ONLY • no irrigation (0) ()() DOMESTIC (1) ( ) INDUSTRIAL (51 ( ) LIVESTOCK (2) ! 1 IRRIGATION (6) ( ) COMMERCIAL (4)I ( ) MUNICIPAL (8) ) OTHER (9) DETAIL THE USE ON BACK IN 01) (4) DRILL NameI1 1,l n� Street B. -r a at I L,Jta City T _J91 6a2) (state) (zip) 91T+3393Telephone No.3o391T+33933 Li,. No. Q1G�F(I,� FOR OFFICE USE ONLY: NOT WRI ITh I Receipt No. �Gll W5425 Basin Dist. CONDITIONS OF APPROVAL CO This well shall be used in such a way as to cause no material injury to existing water, rights. The issuance of the permit does not assure thrapplicant that no injury will occur to another vested water right or preclude another owner of a vbsted water right from seeking relief in a civil court action. 1) APPROVED PURSUANT TO CRs 37-92-W2 (3) (b) (I I) AS THE ONLY WELL ON A TRACT OF LAND OF 40 ACRES DESCRIBED AS THAT PORTION OF THE W 1/2 OF SECTION 2 AND THE NE 1/4 OF SECTION 3, ALL IN T9S, R86W OF THE 6TH. P.M., PITHIN COUNTY, BRING MORE PARTICULARLY DESCRIBED ON THE ATTACHED EXHIBIT "A". 12) THE USE OF GROUND WATER FROWTHIS WELL IS LIMITED TO FIRE PROTECTION, ORDINARY HOUSEHOLD PURPOSES INSIDE A SINGLE FAMILY DWELLING, THE IRRIGATION OF NOT MORE THAN ONE ACRE OF HOME GARDENS AND LAWNS AND THE WATERING OF DOMESTIC ANIMALS. 3) THE RETURN FLAW FROM THE USE OF THIS WELL MUST BE THRU AN INDIVIDUAL WASTE WATER DISPOSAL SYSTEM OF THE NON -EVAPORATIVE TYPE WHERE THE WATER IS RETURNED TO THE SAME STREAM SYSTEM IN WHICH THE WELL .,IS IACA= 1 r?W- 3 2 8 - 9 Jr te: Pursuant fo Pt>irI%iiditn 4, the uses of thisweltalfovlriarordinary househo#d purposes inside up ta: €ee. (3) Single family dt ollings. JSG-9.127JOT APPLICATION APPROVED PERMIT NUMBER 150804 DATE ISSUED MAR 2 9 1a EXPIRAT N DATE MR 2 919" iSTAT GI ) BY �- I.D. COUNTY DEC -19-07 16:01 FROM -DIVISION OF WATER RESOURCES 3038662223 T-458 P.02/03 F-778 w�R-26.7 RECEIVED ' COLORADO DIVISION OF ATEA RESOURCES MAY 1 6 1988 TMIS FOFIM MUST 9E sueMITTEO 1313 Sherman Slreet • Room 818 WITHIN 60 PAYS OF COMPLETION Denver, Colowla B0203 art= OF THE WORK pFSCRI55Q HERE- ON. TYPE Ofi PRINT IN Bl -ACK wEj.L COMPLETION AND PUMP INSTALLATION REPORT i INK. PERMIT NUMBEF65J r1111.6i" WELL OWNER A _. _ Sy /. of the by Y. of Sec. ADDRESS Woo4j, Crgek. T. S — R. 86 W P.M. DATE COMPLETED MAY 1 19 HOLE DIAMETER WELL LOG —.?— In. from TO 48 ft. water �L_ .n. from - to 60 ft. From To Type and Color of Mattrial Loc. 0 481 S", Gravel, And 8vuldera 35' 1+8 60' Kiwous Shale 36'. TOTAL DEPTH 60@ Use additional pages nece55ary to comPIM log. In. from to ft. DRILLING METHOD 04-01etool CASING RECORD: Plain Casing Size T_ & Kind -9.1 fiorn to ft. kind --from from la ft. Size & kind from __ to ft. Perforated Casing Size _M' . & kind from ._.-..13_ to 40 ft - Size & kind from to W ft. Size __ & kind from to ft. GROUTING RECORD Material G`owat Intervals _ 5 - 15' Placement Method — lravitx - GRAVEL PACK: Size Interval. TEST DATA Date Tested �+► Z1 19 Static: Wai.er Level Prior to Test �$ ft• Type of Test Pump aa1lBr Length of Test 2 ih> " Su5t4ined Yield (Metered)y_ 12' Final Pumping Water Level 47! DEC -19-07 16:01 FROM -DIVISION OF WATER RESOURCES t PUMP INSTALLATION REPORT Pump Make Type Powered by HP Pump Serial No. Motor Serial No, Date Instal lea Pump Intake Depth - — Remarks WELL TEST DATA WITH PERMANENT PUMP Date Tested Static Water Level Prior to Test Le^rith of Test, _ Hours Sustained yield (-Metered) CPM Pumping Water Level Remarks 4 1- — C 3038662223 T-458 P.03/03 F-778 IV WATER i U j TABLE W hw r N w � 3 � 1 r CONE OF DfARE$SION CONTRACTORSSTATEMENT The undersigned, Being duly sworn upon oath, deposes and says that he is the Contractor of the well or pump installation described hereon; that he has read the statement made hereon; knows the content Thereof, and that the same is true of I$ nK�`�nowledge. e Signature �� �-'-, License No. , State of Colorado, County of SS Subsc, ibeq and sworn to betare me this 1?.X'td1ay of M A Y 19 My Commission expires; Z"%C E `� . 1a Notary PupliC_6cdl 9 FORM TO K MAO[ QUT IN QUADRUPLICATE: WHITE FORM m"'3t P4 4" Of4in"I COPY 0" PO,n 11"'03 Ona 11110411. WHITE AND GREEN raPic% must I» Mea -Pry Ino $1614 En41n44u- PINK COPY 13 for chs Own4r ind YELLOW COPY r3 far rho OriliOr. \ r w WATER i U j TABLE W hw r N w � 3 � 1 r CONE OF DfARE$SION CONTRACTORSSTATEMENT The undersigned, Being duly sworn upon oath, deposes and says that he is the Contractor of the well or pump installation described hereon; that he has read the statement made hereon; knows the content Thereof, and that the same is true of I$ nK�`�nowledge. e Signature �� �-'-, License No. , State of Colorado, County of SS Subsc, ibeq and sworn to betare me this 1?.X'td1ay of M A Y 19 My Commission expires; Z"%C E `� . 1a Notary PupliC_6cdl 9 FORM TO K MAO[ QUT IN QUADRUPLICATE: WHITE FORM m"'3t P4 4" Of4in"I COPY 0" PO,n 11"'03 Ona 11110411. WHITE AND GREEN raPic% must I» Mea -Pry Ino $1614 En41n44u- PINK COPY 13 for chs Own4r ind YELLOW COPY r3 far rho OriliOr. DEC -19-07 16:01 FROM -DIVISION nF WATER RESOURCES 3038662223 office of the State Engineer Division of water Resources, Department of Natural Resources 1313 Sherman Street, Room 821 Denver. Colorado 80203 Phone (3o3) 866-35811 FAX (303) 866-2223 pate: TAI IE O T-458 P.01/03 F-778 R RESOURCES FAX COVER LETTER To(Name): Company: C� FAX Number: / 'r�L 7 T is From: /nIKE: - A tZI Total number of pages (including cover letter) DESCRIPTION/COMMENTS: 16-D — n)o Pd.nP 4-f- Fo f- J-�( /-S h7_4ro i T_ NUMBER OF ITEMS COST PER PAGE TOTAL. CHARGE CHARGED TO Local FAX ($1.00/page) $ /f, VISA pages Long distance FAX ($1.50/page) s3.Op minimum far Mail documents ($.50/page) credit-card charges Notice: [Department policy requires a minimum Notice: 53.00 char o for credit card order. Do not send payment upon receipt of tnis invoice. (Your credit card account has already been charged for this total amount.) NOTE: THE QUALITY OF DIVISION OF WATER RESOURCES DOCUMENTS VARIES, AND THE QUALITY FROM RECEIVING MACHINES ALSO VARIES. THEREFORE WE CANNOT GUARANTEE QUALITY OF FAXED COPIES. PAYMENT IS REQUIRED DESPITE QUALITY. IF YOU REQUEST COPIES TO BE MAILED, THERE WILL RE AN ADDITIONAL CHARGE. (August f, 2003) L tJ� ADWUNSTRATIVE DETERNiIl\ATION OF THE PIMN COUNTY, COLORADO, COMMUNITY DEVELOPMENT DHIECTOR GRANTING APPROVAL FOR THE ZABRI.SKiE ACTWITY EIr,VELOPE, SITE PLAN, AND SPECIAL��'�' FOR A CDU Administrative Determination Noqq-2007 RECITALS 1. John and Adelaide Zabriskie (hereafter referred to as "Applicants") have applied to the Community Development Director of Pitkin County, Colorado ("Director") for Activity Envelope, Site Plan, and Special Review for a CDU for an addition to an existing residence and conversion of the 2nd floor of a barn into a CDU. 2. The parcel is located at 2567 Snowmass Creek Road. PID#: 2645-022-00-005 (Legal Description, Attachment A). The parcel is zoned RS -30, approximately 39 acres, and is conforming in size. 3. The parcel is currently developed with a legal single family residence of 2,600 square feet and two accessory structures. No previous land use approvals apply to the parcel. The Lot is located within a low wildfire hazard area, is visible from Snowmass Creek Road, and does not contain any mapped big game ranges according to the CDOW. 4. The Applicants submitted an application after July 6, 2006, therefore, the application is being considered pursuant to the 2006 Land Use Code; as amended. 5. Public notice was published in the paper on August 12, 2007. No comments were received within 30 days. APPROVED by the Director, subject to the following conditions: 1. The Applicants shall adhere to all material representations made in the current or prior applications or in public meetings or hearings and shall consider those representations to be conditions of approval, unless amended by other conditions. 2. No calculations for height, bulk, setback, size, floor area, or any other building and zoning requirements have been conducted. These requirements will be considered at the time of building permit review. Structures represented in the application may not be permitted under building and zoning regulations. 3. Prior to submission of any future building permit applications, the Applicants shall be required to submit for approval by the County Attorney and Community Development a Site Plan with an Activity Envelope in accordance with Land Use Code Section 2-30-20(g) and Application Manual Section 2.1.12. The above referenced approvals shall be a condition precedent to finalization and recordation. The Site plan shall also incorporate the following change: a, Change the title to "Zabriskie Activity Envelope and Site Plan". 4. Prior to submittal of any building permits, The Applicants shall submit for recording a covenant, acceptable to the Community Development Department and County Attorney, prohibiting commercial agricultural activities on the parcel. 5. No structural development, with the exception of fencing, in excess of 30" shall occur within the setbacks of the Lot. Landscaping in the form of berms shall not exceed four feet from the most restrictive grade. Any external development located within setbacks mandated by County zoning Page I of 1 RECEPTION#: 543671, 10l3112007 at 10:45:39 AM, 000013 O 1 OF 8. R $0.00 Doc Code ADMIN DECISION Janice K. Vos Caudill, Pitkin County, CO regulations shall require a variance from the Board of Adjustment. Approval of a landscape envelope within such setbacks does not assure approval of a variance. 6. The parcel is exempt from Growth Management up to 5,750 square feet and cannot exceed this floor area limitation without approval for use of a TDR or successfully competing in the Growth Management competition. 7. Prior to issuance of a building permit application for the addition and CDU, the Applicants shall: a. Complete a fireplace/woodstove registration form with the Community Development Department, if necessary. b. Obtain a stormwater permit from the State of Colorado if site disturbance exceeds one (1) acre. C. if necessary obtain a County access/driveway/turnaround permit acceptable to the Basalt Fire Protection District and County Engineer. d. Submit a drainage and erosion control plan for review and approval by the Planning Engineer. All slopes steeper than 2:1 shall utilize erosion control blankets. e. Submit a construction management plan for review and approval by the County Engineer showing the locations of staging, material storage and employee and construction traffic parking. f Pay the applicable road and employee housing impact fees. g. Obtain a permit for construction of the 1SDS. h. Provide verification that the Applicants' water rights for an additional dwelling. 8. if retaining walls are used, they shall comply with the following standards: a. Retaining walls may be permitted to support steep slopes but should not exceed four (4) feet in height from the finished grade, except for (i) a structure's foundation wall, or (ii) as necessary to construct a driveway from the street to a garage or parking area, or (iii) as otherwise expressly allowed by the Land Use Code. b. A retaining wall should not exceed seven (7) feet in height. Retaining walls greater than four (4) feet in height shall be supported by appropriate engineering and reviewed and approved by the County Engineer. c. Terracing should be limited to two (2) tiers. The width of the terrace between any two four (4) foot vertical retaining walls shall be at least three (3) feet. Retaining walls higher than four (4) feet should be separated from any other retaining wall by a minimum of five (5) horizontal feet. Terraces created between retaining walls shall be permanently landscaped or revegetated with native vegetation. d. Retaining walls used to support existing road cuts may exceed (a), (b), and (c) of these guidelines. e. The Applicant shall submit the HP Geotech subsoil report at the time of building permit submittal for review and approval of recommendations by the Planning Engineer. U Prior to issuance of a building permit the Applicants shall submit a landscape plan to the Community Development Department for review and approval that reasonably screens tkce residence from Snowmass Creek Road. This landscape plan shall include plantings that will soften the visual affect of the residence using native vegetation. 10. Standards Applicable to All Wildfire Hazard Areas: Development is allowed in wildfire hazard areas subject to conformance with the following development standard. Page 3 of 7 000014. A. Defensible Space: The area around all buildings/structures, limited by property boundaries that may limit a property owner's ability to comply with this section, shall incorporate landscaping with wildfire defensible space considerations as follows (note: actual vegetation manipulation to meet these conditions may not be necessary where the natural vegetation patterns have already fulfilled these conditions): a) Brush, debris and non -ornamental vegetation shall be removed within a minimum ten -foot (i0') perimeter around all structures. b) Vegetation shall be reduced to break up the vertical and horizontal continuity of the fuels at a minimum of a thirty (30) foot perimeter around a structure built on flat ground. (For greater slopes, reference the CSFS Safety Zone chart in Wildfire Guidelines For Rural Homeowners, which provides general guidelines that may be modified by a wildfire expert acceptable to the County). c) Spacing between clumps of brush and vegetation up to the thirty (30) foot perimeter shall be a minimum of two (2) times the height of the fuel. Maximum diameter of the clumps shall be equal to the height of the fuel. All measurements shall be from the edges of the crowns of the fuel. d) All branches from trees and brush within the thirty (30) foot perimeter shall be pruned to a height of ten (10) feet above the ground with removal of ladder fuels from around trees and brush. e) Tree crown separation within the thirty (30) foot perimeters shall have a minimum of ten (10) feet between the edges of the crowns, except for mature stands of aspen trees where ladder fuels have been removed. In areas of aspen regeneration, understory shrubs and down and dead materials shall be removed. f) All branches that extend over the roof eaves shall be trimmed and all branches within fifteen (15) feet of chimneys shall be removed. g) The density of fuels up to a one hundred (100) foot perimeter of the structures shall be reduced where natural reduction has not already occurred. h) All deadfall up to a one hundred (100) foot perimeter shall be removed. i) No new conifer trees shall be planted within ten (10) feet of a residence. )) No flammable mulches shall be placed within two (2) feet of a residence. k) The property owner shall be responsible for the continued maintenance of the defensible space vegetation requirements. B. Access a) Access roads and driveways shall be built to County standards; however, these standards may be increased to mitigate wildfire hazards based on comments provided by the Colorado State Forest Service, the Sheriff's Department, local fire protection districts and/or a person approved by the County as an expert in wildfire area designation and mitigation. C. Water Supply for Fire Safety a) When access to a public or private pressurized water system is not available or if it is necessary to augment fire protection water systems, private ponds may be used if approved by the Community Development Department and the local fire district. b) Any fire department recommendation for individual structure water supply and storage shall be accessible to fire department vehicles from the exterior of the structure through a fire Page 3 of 7 000019 department approved mechanism (such as a fire hydrant). The amount of storage capacity on the parcel shall be determined by the Fire District. c) All new development shall conform to the appropriate building Code(s) with regard to sprinklering structures.. D. Roofing Materials, Roofing Vents and Projections At and Below Roof Line. Unless the wildfire expert has recommended a different method of construction, roofs and projections at or below roof line in Low, Medium and Severe Wildfire Hazard Areas shall be constructed according to the following specifications: a) Love Hazard Area 1, Roofing Materials 2, Class A covering or Class A Assembly as defined by the currently adopted Building Code. 3. No wood shakes or shingles. 4. All other adopted Building Code compliant methods and materials permitted. E. All Hazard Areas: Roofs with less than a 3:12 pitch are not permitted in Low, Medium, or Severe Wildfire Hazard Areas unless they comply with the following: a) All roof coverings shall be constructed of non-combustible materials and installed on a Class A roof assembly. b) All roof coverings shall have a surface that shall facilitate the natural. process of clearing roof debris. c) Protrusions above the roofline, such as parapets. shall be prohibited. d) Roofs shall be installed as required by the adopted Building Code and shall have a minimum pitch of 1:448. e) All roof designs, coverings, or equivalent assemblies shall be specifically approved by the Fire Marshall prior to submittal of a building permit application. Page 4 of 7 0000 �6 F. Maintenance and Miscellaneous Requirements a) Roofs and gutters shall be kept clear of debris. b) Roof vents shall be screened with corrosive resistant wire mesh, with mesh one-fourth ('/a) inch maximum. c) Yards shall be kept clear of all litter, slash and flammable debris. d) All flammable materials shall be stored on a parallel contour a minimum of fifteen (1. 5) feet away from any structure. e) Weeds and grasses within the ten (10) foot perimeter shall be maintained to a height not more than six (6) inches. f) Firewood/wood piles shall be stacked on a parallel contour a minimum of fifteen (15) feet away from the structure. g) Swimming pools and ponds shall be accessible by the local fire district. h) Fences shall be kept clear of brush and debris. i) Wood fences shall not connect to other structures. j) Fuel tanks shall be installed underground with an approved container. k) Propane tanks shall be buried, if possible, or installed according to NTFPA 58 standards and on a contour away from the structure with standard defensible space vegetation mitigation around any aboveground tank. Any wood enclosure around the tank shall be constructed with materials approved for two (2) hour fire -resistive construction on the exterior side of the walls. 1) Each structure shall have a minimum of one ten (10) pound ABC fire extinguisher. m) The Applicant shall comply with all requirements of the Basalt Fire District Code. n) Addresses shall be clearly marked with two (2) inch non-combustible letters and shall be visible at the primary point of access from the public or common access road and installed on a non- combustible post. 11. The Applicants shall comply with the following general conditions regarding wildlife: A. When existing native vegetation must be altered within the Activity Envelope, the Applicant may be required to prepare a habitat mitigation plan acceptable to the County, Such mitigation plan may substitute (in a nearby area on the subject property) vegetation equal in type and quantity to that being removed to mitigate effects on wildlife species. Should there be no opportunity on the property for habitat mitigation or restoration, off-site mitigation benefiting the same species may be required, or financial mitigation may be paid into a County habitat mitigation fund should such a fund be established in the future. B. Manipulation of vegetation outside of the Activity Envelope is prohibited. C. Mesh or woven wire fences are prohibited outside the Activity Envelope except hay storage. D. Wood rail fencing shall employ three (3) rails or less, be the round or split rail type, shall not exceed fifty-four (54) inches in height above ground level, and twelve (12) inches in width (top view), and shall have at least eighteen (18) inches between the lower two (2) rails. E. Wire fencing must be three (3) strands or less. The top wire should be a twelve -point -five (12,5) gauge twisted barbless type at a maximum height of forty-two (42) inches, The middle strands (which may be barbed) should be located a minimum twelve (12) inches apart and from the top wire preventing entanglement when mule deer jump over. The bottom strand should be sixteen (16) inches from the ground. F. Tall overly mature trees and standing dead trees (snags) should be retained at the rate of two (2) to five (5) per acre whenever possible as nesting and perching habitat. G. In areas of high black bear activity, fruit bearing trees and shrubs shall be prohibited within the Activity Envelope. This does not include pre-existing native trees and shrubs. H. Development shall be clustered to the maximum extent possible to minimize impact on wildlife. Page S of 7 000017 1. Access shall be provided to the Colorado Division of Wildlife for trapping, tagging, studying, or otherwise managing wildlife. J. Trash/garbage shall be kept in an approved bear resistant container or enclosure. These containers shall be accessible to and use at all times by contractors on site. K. Bird feeders, including hummingbird feeders, shall be hung away from any deck or window, and be at least ten (10) feet from the ground suspended between two (2) trees or posts. All seed feeders shall include a seed catchment pan to catch discarded seed. L. Horse grains, pellets, and cookies shall be stored in bear resistant containers. M. Pet food shall not be left outside. N. All dogs shall be kenneled. 12. The detached CDU shall not exceed 1,000 net livable square feet of floor area, which shall count toward the total allowable floor area for the lot. The kitchen contains the following, as defined in the Aspen/Pitkin County Employee Housing Guidelines: a minimum of a two -burner stove with oven, standard sink, and a refrigerator plus freezer. The oven must be able to bake and broil and be at least 5 cubic feet; the sink must measure at least 14"WX16"DX5.25"H; refrigerator must be at least 5.3 cubic feet and include at least a .73 cubic foot freezer. The floor plan for the CDU shall be submitted to the County Housing Office for review. 13. The Applicants shall, by covenant, guarantee that the caretaker unit; a. Shall not be required to be rented; b. Shall not be sold or otherwise conveyed or separated from the original parcel regardless of the ultimate form of ownership of the caretaker unit; c. Shall be limited to occupancy by not more than two adults and related children, who qualify as ("and have been found by me Housing Office to be) employees of the community under such guidelines as may be from time to time established, or members of the owner's immediate family, even though they may not qualify as employees of the community; d. Shall be rented for terms not less than 6 months if rented. 14. Upon completion of the CDU; but prior to issuance of the Certificate of Occupancy, County Housing Office staff shall be entitled to conduct an inspection of the CDU for compliance with the above - referenced requirements. 15. The caretaker dwelling unit restriction may be removed by the property owner upon approval of the Community Development Director, subject to the requirement that the dwelling is removed or modified. If modified, the remaining improvements must no longer be capable of occupancy as a dwelling unit and must meet otherwise applicable Code requirements. 16. The provisions of these regulations are for the purpose of providing a voluntary CDU on a legally created lot or parcel in the County. Any unit approved under this provision of the Pitkin County Land Use shall not be used for mitigation of employee housing requirements as established elsewhere in said Code. 17. Applicable road and employee housing impact fees must be paid at building permit. 18. No development shall occur outside the approved activity envelope with the exception of vegetation removal necessary to comply with the wildfire mitigation measures described above. No structures shall be permitted outside of the approved building envelope. Applicant shall be required to obtain an Earthmoving Permit for any work outside the approved envelope. 19. The access drive shall be built to current County Standards, as described in the Pitkin County Asset Management Plan and submit for an access permit. The driveway layout shall be staked in the field and reviewed and approved by the County Engineer, prior to commencement of construction. Page 6 of 000048 20. Prior to commencement of any earthmoving or other construction activity, the Applicants shall stake the corners of the activity envelope and install construction fencing around the construction site within the perimeter of the building envelope. The fencing shall remain in place until issuance of a Certificate of Occupancy. 21. All areas disturbed by construction shall be re -vegetated with native shrubs and grasses within one growing season of the project's completion. 22. 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, § 2-20-170 and C.R.S., § 24-68-105. The statutory vested rights granted herein shall expire on October 2010. 23. Failure to comply with the conditions of this approval may result in revocation of this approval, or any subsequent permit(s) or approval(s) related to this property, or vested rights associated with this property. PUBLISHED AFTER ADOPTION FOR VESTED REAL PROPERTY RIGHTS in the Aspen Times Weekly on the JL day of tJ0 V- , 2007. APPROVED by the Director, this 24J). -day of t i)e 2007. A A.A F0 4LI. J4 Cindy %lou en, Community Development Director PITH 2645-022-00-005 P098-07 Page 7of7 000019 Attachment A Legal Description ........... . !SECT,TWN9RNG:2-9-86 DESC: LAND IN INE4 OF SEC 3 & W2 OF SEC 2-9-86 DESC BY M/13 BK 551 PG 928 �1.1 OWN MEMORANDUM To: Michael Kraemer, Planning Department From: Carla Ostberg, Environmental Health & Natural Resources Department Date: August 17, 2007 Re: Zabriskie Activity Envelope, Site Plan Review and Special Review for a Caretaker Dwelling Unit (PID 2645-022-00-005; Case P098-07) SUMMARY OF RELEVANT PARTS OF APPLICATION: The applicant is proposing to add approximately 1,787 square feet of floor area to the existing residence and to add a 1,000 square foot caretaker dwelling unit (CDU) within an existing barn on the property. DISCUSSION: The Pitkin County Environmental Health & Natural Resources Department has reviewed the details of the Zabriskie Activity Envelope application under the authority of the Pitkin County Land Use Code and the Pitkin County ISDS Regulation and has the following comments. On August 10, 2007, Carla Ostberg conducted a site visit to the property. Warren Palmer, representative of the applicant, described existing conditions and future plans for the onsite wastewater treatment system(s) and water supply that will serve both residences. --- WATER SUPPLY: The existing residence is currently served by a private well. No information on that well was provided in the application. In connection with any Septic System Permit for this property, this Department will require proof of an adequate legal water supply, as defined in the then -current Pitkin County regulations. The applicant should be sure to consider this issue in connection with the CDU, as some well permits are issued for only one single family dwelling unit. --- SEWAGE TREATMENT AND COLLECTION: The existing septic system on the property was permitted and installed in 1988. This system was designed to serve four bedrooms in the main house and one bedroom in a future CDU, for a total of five bedrooms. The "future CDU" was never constructed. A 1250 gallon septic tank (designed to accommodate four bedrooms) and a 1050 square foot sand filter (designed to accommodate five bedrooms) serve the exiting four bedroom house. Although the permit was not signed by the former Environmental Health Department's staff, notes on the permit indicate a final inspection was conducted. Printed on Recycled Paper Floor plans for the remodel of the main house show five potential bedrooms, as defined in the current Pitkin County ISDS Regulation. The absorption area was sized to accommodate five bedrooms; however, the tank was only sized to accommodate four bedrooms. Alternatives: If the applicant intends to use the existing system (tank and/or absorption area) to serve the remodeled residence, the system must be evaluated by a Professional Engineer. Neither the permit nor the accompanying documents contain information on the soils or high groundwater levels. Depth of sand filter media is also unclear. Given the potential for high groundwater in this area, an eight foot profile hole should be excavated in the vicinity of the existing system to assure the system is maintaining a four foot separation between the bottom of the system and high groundwater. Documentation of this evaluation must be provided to this Department. 2. If a new system for the main residence will be designed, the proposed Activity Envelope (for purposes of placement of the onsite wastewater treatment system) should be sufficient. The proposed Activity Envelope for the CDU's onsite wastewater treatment system should also be sufficient. All onsite wastewater treatment systems installed within Pitkin County require Septic System Permits issued by the Environmental Health & Natural Resources Department, and must comply with the County's ISDS regulations. The County cannot issue a Building Permit until a Septic System Permit has been obtained, or the exiting system has been assessed as suitable to serve the proposed development. Printed on Recycled Paper mx Ig f fi, o K-rtk k v I'■ to ruWrtirrrw�w� —Nowl\ i '-w% W ?� n �O a o0 aU a� .E o� as oa —Nowl\ i '-w% .Q I-. 11 u j 0 IL 0 11 I Cl VICINITY MAP SCALE: 1'-2.000 SECS. 2 & 3, T.9 S.. R.86 W., 6th P.M. LINES IN SPACE I ... E-10 Pelle 999 ZABRISKIE ACTIVI AND SITE . . . ....... PITKIN COUNTY oot ............ . . age 4 N, . . . . . . . . . . . . I Ac ...... ... ..... LEGEND AND WO'M TY ENVELOPE PLAN N COLORADO. -+- s LEGAL DESCRIPTION p. A. W.I.. d 1 1•LUy Jr T"l ... InII l ... ... .... . T. 4 IS ... 40AISANT.."I'Pl. 44". It". I . I a r S 5 9 IS A ..®r. 2. S -E W.. er A. re. S,6r.,."E 11.31 1—: 5 W-3 f•ISr0't 5,04,4xI 6 F—!';*S5t0'3-jf 1er . IS, Oe • Mf —so I.— A NN4r I 10 SWi. 1!:7", TI 111— STATE C01.0— Allele Book 994 Page 747 RE� EpTl9n6H, 5 A ".4111 —T P110CLAINNX I lt�ENTAL HAZAID AREAS EXIST THAT Mf�T AFFECT T., FROPF1 I III I —OVEMENM W THE USE AIIII �Wl— THE -1. WAITUR SIDNS OF I.$E W OF DES IONATED WoNNOT HILL ... .. A 74 SAFETY THAT —Va —10 AII ARrlr COMMUNITY I)EVZLOPMUNT DIRSCTOR APEROVAL TIli ACTIVITY ENVELOPE AID SITE PtAH FO. ZABRISII, -S .;I pAY Or TDM 0F "I" A' VIei.Z.';;= REL qNp *"X;kf'E T" '"" '—" 'y "" ENF. V I : flA ITI�Yllw—TT " .1 CAll 144 ACCXPTANCE FOR RXCORDIN THIS ACTT V f I I ENVELI- ANI) SITE TE FLAII HAS BEEN ACC! FOR F I L RE o IIRK A. 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