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HomeMy WebLinkAboutpitkin.eh.273510202001 (2003)69 Pitkin C _ _.nty Environmental Health Departmen Permit for an Individual Sewage Disposal System 0405 Castle Creek Road, Suite 10, Aspen, Colorado 81611 Phone 970-920-5070 / FAX 970-920-5077 Permit # 03022 Parcel ID # 2735-102-02-001 Type of permit New( X ) Repair( ) Addition/Remodel to House( ) Name of Owner Lawrence and Joan Altman Street Address 200 W. Eagle Pines Property legal description Lot 1 Eagle Pines Size of lot 5.494 acres Total square footage of the house 9255 sq ft Water source Public Water System — City of Aspen # of bedrooms in house Caretaker unit N/a # of bedrooms in caretaker unit Designed for what # rooms (list) Designed by # of offices, lofts & similar sized rooms in house Total square footage of the caretaker unit 0 # of offices, lofts & similar sized rooms in caretaker unit Seven: 7 bedrooms in house; no caretaker unit Church & Associates Permit information Mailing Address 4501 Wadsworth Blvd. Wheat Ridge, CO 80033 Perc rate 22 Profile hole depth 8 ft Depth to groundwater or bedrock Minimum Septic tank capacity 3981 gallons Minimum Absorption area Greater than 8 ft 1494 w/ 50% reduction Comments Septic permit approved per compliance with the engineer design and specifications dated May 15, 204. 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 at least 20 feet between the house and the field. This system will have one 2000 gallon single compartment tank followed by a 2000 gallon two compartment tank with an effluent filter on the outlet. A distribution box will be used to distribute the effluent. There will be 7 trenches with 14 gravelless chamber units for a total of 98 units. There must be at least 6 feet of undisturbed soil between each trench. Trenches must be not be buried more than 3 feet deep. 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: � Y 4LB I L �_ 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 rest be cluded with this: ermit bgfore the final approval will be issued. Installer: i Cry, y,TL Ki "i � Final ap roval: Date:© �� Gan n a o r� . 1V&0/ 11 fu 19is0 1Ail, A- i��� � ,�� ,�ctf��'c�e ��� .Cnvebp-f. Fe.b 13.03 11:06a Pitkin Co Env. Health (9-1n)920-5077 p.4 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 Home Phone: qa 0.— 3 E-mail Address: Primary Contact Person (all communication regarding this permit will go through this person) � i Name i ��' `' ► I t I � ► VJ v L16 Contact Mailing Address VI I`' I City, gate Zip Business Phone Zm ll Phone : –t{ Fax 0 , -�- E-mail Address: Kt' -A ►1 P�/�� (available from assessor's office at 920-5160 or at www. itkinassessor.o ) Street address of property Legal Description: Lot ,Block Filing Subdivision Type of proposed structure: s 1 ilG IF ^ s E *iy 125 SJc� x Size of lot. ,� � `/`i 7 acres. �i25� YP Total square feet of house , #'of bedrooms (potential) in house _ Caretaker Unit Attached ( ) Detached ( ) Total area(sq ft) of caretaker unit # of bedrooms (potential) in caretaker unit Permit is for New Home (l/i/ Repair due to failure ( ) Remodel/Addition ( ) Emergency use Water. Private well ( ) Spring ( ) Stream ( ) Community/Public Water System If community system: Name of system CIT -1 QF- P 4 rmit that takes 6 hours or less for the department to approve. If approval takes The fee for a ISDS application is $330 for a pe er than 6 hours, a rate of $65 per hour will be charged. The maximum fee is $1000. The basic fee of $330 is due at the time longn of applicationert6 The remainder, if any, will r 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 welter cintour drain intervals, buildings, property lines, ditches, slopes, waterlines, springs; suction or irrigation lines, drinking tiles, irrigation ditches, lakes, watercourses, 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 nt to Pitkin County codes. No construction may be undertaken until all any other permit required for construction pursua approvals and permits have been obtained. The PEnvironmental Health eCounty and employees will harmless should the individual sewage disposYstemfaormfunction. 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 applicant Date 3- 3 - n Received by Receipt # Date D G:\isdslisd—nnVedsao o.doc Received Time Feb -13, 11:21AM , ozcznr_iatAc ENGINEERS & GEOLOGISTS June 17, 2003 John Muir, Atte: Kristen 201 Main Street, Suite 304 Carbondale, Colorado 81623 Subject: OWS Design Clarifications, Proposed Altman Residence Lot 1, Eagle Pines Pitkin County, Colorado Job No. 15503W Kristen, JUN 19 2003 PITKIN COUNTY ENVIRONMENTAL HEALTH As requested, we have evaluated layout changes for the proposed septic system for the subject site. Two of the seven proposed trenches may be re -configured to have two rows of seven chambers each. Even distribution and setbacks must be maintained. The septic tanks may be placed in line with each other in the northwest corner of the house. The changes will not effect the performance of the drain field. All other recommendations from our revised report dated, May 15, 2003, must be followed. LDIHATIONS A contractor who is experienced in its installation should install an OWS design. Our investigation, layout, design and recommendations are based on data submitted. If subsurface conditions different from those described in this report are encountered, we should be notified to evaluate the change on the proposed OWS. If the health department modifies this design, we should be contacted to evaluate the impact on the performance of the OWS. The county and our firm must be contacted upon completion of the OWS All construction is to be in accordance with the ISDS regulations. Pipe type and size, burial requirements, septic tank construction, and other specifications, which are not depicted in our report, are to conform to the requirements of the ISDS regulations. The installer of the system is to have demonstrated knowledge of the PCEHD ISDS regulations and requirements. If there are questions, please call. The project engineer for this site is Tim Petz. CHURCH & ci C. Timothy R. Petz, Project Mand r 2 copies sent copy sent to PCEHD, Attn: Carla Block fax copy to 970-544-5271, Attn: Bob Sprig fax copy to 970-963-8013, Attn: Jim Condon DENVER 4501 Wadsworth Boulevard Wheat Ridge, CO 80033 303.463.9317 Fax: 303.463.9321 0 0 Pitkin County Environmental Health Department Contact Log Sheet c �t°�' N, kuh,-&r n D- ..x, n vtvu Vu6 Pi zli" kup . �r CHURCH & Associates, Inc. ENGINEERS & GEOLOGISTS May 15, 2003 John Muir, Attn: Kristen 201 Main Street, Suite 304 Carbondale, Colorado 81623 Subject: Revised OWS Design, Proposed Altman Residence Lot 1, Eagle Pines Pitkin County, Colorado Job No. 15503W Kristen, As requested, we have investigated subsurface conditions and designed a revised onsite wastewater system (OWS) for the proposed residence. Revisions are based on the results of our subsurface investigation, performed May 14, 2003. Our previous reports, dated January 31, 2003 and May 6, 2003 should be discarded to avoid confusion. SITE CONDITIONS The property is in a rural residential area of Pitkin County, where OWS are required. The proposed drain field areas have 10% to 15% slope to the north, a full cover of native grasses, and sparse pine trees_ The residence will be served water by the local water district. PROPOSED CONSTRUCTION A seven -bedroom residence with a living area of 9000 square feet (SF) is proposed as presented on Figure 1. The OWS was sized based on 7 bedrooms and 1820 gallons per day (GPD) using Pitkin County Envir- onmental Health Department (PCEHD) loading of 130 gallons per day per person. The sewage loading with a pealing factor of 1.75 is 3185 GPD. The loading includes washing machines and garbage grinder. SUBSURFACE CONDITIONS A subsurface investigation was performed by digging three percolation holes, 26 to 34 inches deep, and one test pit, at the locations presented on Figure 1. Subsurface materials in the profile pit consisted of 3 feet of topsoil, underlain by clayey sand with rock fragments to the maximum depth explored of 8 feet. No ground water was encountered. Percolation tests indicate percolation rates of 20 to 27 minutes per inch (MPI). The average percolation rate is 22 MPI in the area of the proposed residence drain field. Percolation data is presented as Table 1. ?��40t+ RECOMMENDATIONS The OWS installation requires two septic tanks with an eluent filter and seven gravelless chamber - trenches, as indicated on Figure 2. The OWS design is based on an average sewage load of 1820 GPD and a percolation rate of 22 MPI. The OWS installation must include one 2000 -gallon, single -compartment; ollowed by one 2000 -gallon, two-compartment, precast concrete septic tank precast concrete septic tank f DENVER 4501 Wadsworth Boulevard Wheat Ridge, CO 80033 303.463.9317 Fax: 303.463.9321 Subsurface 10figation and Revised OWS Design Job No. 15503W, 5/15/03 Page 2 with an eluent filter on the outlet. Seven chamber -trenches are required for the residence. Each trench must have one row of 14 -chambers for a total of 98 chambers and 1519 SF of infiltrative area. A flow splitter basin or a 7 -outlet, concrete distribution box that can be accessed from the surface must be used. Details of the design are presented on Figures 2 through 4. n Vehicle movement over the drain field area during construction should be kept at a minimum to minimize compaction of the receiving soils. The bottom of the beds should be scarified with a pick, shovel, or backhoe bucket teeth prior to the addition of chambers. The surface of the field should be seeded after installation of the fields. A native seed mix should be sown at the drain field to revegetate the surface. These mixes do not require irrigation and develop a growth 10 to 15 inches high. No automatic sprinkler system should be installed over the trenches. OPERATION AND MAINTENANCE The owner must realize an OWS is different from public sewer service. The owner must be aware of and assume responsibility for maintenance of the system. In the absence of a monitoring program, the septic tanks should be pumped every two years. Effluent filters and screened vaults, as applicable, are to be cleaned during pumping. There are daily considerations such as not putting plastic or other nonbiodegradable materials into the septic system. Use of the Garbage grinder should be minimized. The backwash of a water softener may be harmful to the OWS. A separate drywell should be constructed for the backwash waste, if a softener is installed. Chemically treated water from a swimming pool or spas should not be introduced to the OWS. LBWATIONS A contractor who is experienced in its installation should install an OWS design. Our investigation, layout, design and recommendations are based on data submitted. If subsurface conditions different from those described in this report are encountered, we should be notified to evaluate the change on the proposed OWS. If the health department modifies this design, we should be contacted to evaluate the impact on the performance of the OWS. The county and our firm must be contacted upon completion of the OWS All construction is to be in accordance with the ISDS regulations. Pipe type and size, burial requirements, septic tank construction, and other specifications, which are not depicted in our report, are to conform to the requirements of the ISDS regulations. The installer of the system is to have demonstrated knowledge of the PCEHD ISDS regulations and requirements. ifthere are questions, please call. The project engineer for this site is Tim Petz. CHURCH & Associates, Inc. Reviewed by f ♦l a Timothy R. Petz Edward O. Church, P.E. — -- Project Manager '' T:4AL;y� i * TRP/erb 3 copies sent, via FED EX NCRES .� 1; EAGLE PINES PITKIN COUNTY; COLORADO THE LOCATION OF EXISTING AND PROPOSED IMPROVEMENTS SHOWN HEREIN AND THE WELL AND/OR DRAIN FIELD LOCATIONS STAKED AT THE SITE ARE NOT THE RESULT OF A PROPERTY SURVEY. IMPROVEMENT LOCATIONS ARE SCALE 1 " = 40' i APPROXIMATE. IT IS THE PROPERTY OWNER'S RESPONSIBILITY ' TO DEFINE PROPERTY BOUNDARIES AND ENSURE ALL ONSITE IMPROVEMENTS ARE LOCATED WITHIN THE PLATTED SITE AND OUT OF INAPPROPRIATE EASEMENTS. ALL SEPARATION DISTANCES ARE TO BE VERIFIED PRIOR TO EXCAVATION. Opp 00 30' UTILITY EASEMENT xx�;..xx.x.... , rrr^91� IP ;'�. �5w.,�.....x.. x. ' I ,,,.� 2 .. ... ... ..,,xx.. III �ll . .......... � .. ,,,.....e. x ....x ......................n.....x nn. ...v. ..w. .......... ""rm.,.ex., n� u BUILDING ,...... ENVELOPE ._._.._.... Iliil� II',...................., ..., , �illl� n.x 1ii1ll x.x I x.x,.x, ��il i .�18IIhIIU� ,'"oe• r.,i �,9,,. �' 'N.'. ....... !IIIi�IiiGIV 4°� llililEi'��I' �, 15 °I SII IIIiti�II ... ........ .x.. �p ' ........... PROPOSED 7 -BEDROOM RESIDENCE PROPERTY LINE SITE PLAN AND LOCATION OF 05/16/2003 I JOB NO. 15503W PERCOLATION HOLES REVISED FIGURE 1 .RES EAGLE PINES ZPITKIN COUNTY, COLORADO 1/519 SF OF INFILTRATIVE AREA IN SEVEN GRAVELLESS CHAMBER -TRENCHES. EACH TRENCH MUST HAVE ONE ROW OF 14 CHAMBERS FOR A TOTAL OF 98 CHAMBERS XI Ifs aN ............. .... ... . ...... . III' ly4fnl;!III ............ . ........ .......... . . ..... ...... . ...... .. ..... ......... . ........ . . ..... .... . ..... ................... Ilu II JOB NO. 15503W CONCRETE DISTRIBUTION SCALE 1 11 = 201 ... .... ... . OBSERVATION/ VENT (TYP no—,' . . ......... . ......... . `SETBACK . . .......... . ... ... ".? .. ......... 0 0 N E _000— NE 2000 -GALLON, SINGLE -COMPARTMENT PRECAST CONCRETE SEPTIC TANK ... . . ... ... rFOLLOWED BY ONE 2000 -GALLON, PRECAST CONCRETE C CONCRETE SEPTIC TANK WITH AN EFFLUENT FILTER AT THE OUTLET. . ............ .... . ..... . . ............. ... .... ... ... . .... ..... ... .... 7 -BEDROOM RESIDENCE ...... . ... I. . . .......... "Ile ... . ....... . .. ....... .... ... . . .. ........ SEWER LINE II .. .. ... .. . .. . ...... .. . ...... hl , 1115" Ile ... .. ..... ... . 11 Irl, pll;l'q InTO ... . .... ... . .... ........... . II I ........... . . w„r Ilu II JOB NO. 15503W CONCRETE DISTRIBUTION SCALE 1 11 = 201 ... .... ... . OBSERVATION/ VENT (TYP no—,' . . ......... . ......... . `SETBACK . . .......... . ... ... ".? .. ......... 0 0 N E _000— NE 2000 -GALLON, SINGLE -COMPARTMENT PRECAST CONCRETE SEPTIC TANK ... . . ... ... rFOLLOWED BY ONE 2000 -GALLON, PRECAST CONCRETE C CONCRETE SEPTIC TANK WITH AN EFFLUENT FILTER AT THE OUTLET. . ............ .... . ..... . . ............. ... .... ... ... . .... ..... ... .... 7 -BEDROOM RESIDENCE ...... . ... I. . . .......... "Ile ... . ....... . .. .. ..... . .. ........ .... ""' . .......... CLEANOUT 11ji .. ..... ... CLEANOUT,. . . . ............ . .. . ........ ... . . .. . ... .. .. . . . .. ..... . . .... . .. .. pi .. ......... . . . .........,...,....r,-. ... ... .. .. ........... .......... . ..... ... . ...... r::".,,.,..........,...,,_ . ......... .... . .. . .... ......... W i'IVI�III��I��91��plllllilll�ll�llillllNjl ... ....... .. . . BUILDING ENVELOPE LOCATION OF PROPOSED OWS 5/16/2003 REVISED FIGURE 2 .. . . ......... _4r, Pv.�5 .... . ..... SEWER LINE II .. .. ... .. . . .. .. ..... . .. ........ .... ""' . .......... CLEANOUT 11ji .. ..... ... CLEANOUT,. . . . ............ . .. . ........ ... . . .. . ... .. .. . . . .. ..... . . .... . .. .. pi .. ......... . . . .........,...,....r,-. ... ... .. .. ........... .......... . ..... ... . ...... r::".,,.,..........,...,,_ . ......... .... . .. . .... ......... W i'IVI�III��I��91��plllllilll�ll�llillllNjl ... ....... .. . . BUILDING ENVELOPE LOCATION OF PROPOSED OWS 5/16/2003 REVISED FIGURE 2 T I cn CTI0 w R cl D_ z T m r r Di W m 00 Ti C0) -1) N M 0 �0 o r cnD m>rMC) o� rn<om� OQm �um>WZ C �u 0> 2 n M rrnrn�u p— j>mG)Z— n=--ir mm 0 0X�ooVD � ZD n D W D O�mit �Z7 z ii D 0 �X � i �0 CO (77 p i D (n m =A NoMv n MNz00o C/)��mzo II n -_i DCC) T 00 n Cn z m co -1t-Zm O O z3 C Z c, n DD=- m DZo='utn � c rn O O m D W --i 'u -I o z M M n v'OnzZD p n m = = o w=ommz D cn cn v� z CN ' ci co MOS m_- �_� 0' D n 3�� CO rn m m cn (--n)n>OrDZ m Cn30r� Z 3 --M (- -u n Z Z_ _z rEu OD z--4 mzn� 30 m �O �Z�z nm orrlu zCO DF) ---i�umZ C -)D =rnmm ----i --i O > n a -I -1 0 rn0zD �n-„r X 0 :u G v mr-Z X --a rr - mOto U) rn o o z m0 _ � ED c n cncn zrn--0 N > _ �oo� O m C � D;u =nz D D u z r- CA O co m x m z 0 n m x n D D O Z 1 �Gz _� < r c n m 0 n aw O 3 b m rn � m 3 _z 3 C z O Ti 0 m m Z O C m O X m O C m 0 4> D rn rn _ -0 m I O D n 7K TI r r- �o� 7: M n< >Dc�n O -D zn m Z u �j mmn OO MC o m r m --i m pm CA C 0 (j] < D � Zm � O cmi,>o z rr rr rn m D O X D r 7J 0 CO I m 0 I z D CO m z m n T rn D D z r < m --I co C 0 z CD 0 X i 1� No U)Cf) m �7 0 D CA (JI om < Z n < m z -o m C) D z Cm -IDr cqn Boz -uM m o m M m n�C/) �-Tl �l C Om cmi,>o OZ U)Cf) m �7 0 D CA (JI om < Z n < m z -o m C) D z Cm n� W LL Li co E W Lu Os m W w P -- c �0 r`u V O O O N 4i A Q N O � O LL N co U W N � N� 4 3 N � c o FCO- C) U CO N U (n Q3 � L c U N E O U g. cu E U O U a �c c o E O cQ- C (R O .0 o� 0 o� r R m 6 <E fao oil, ce) It O W O Ir N D O � 4-) LL O d V p E v u gr rL V7 E � C D a E v • v x _ 6 <E fao oil, ce) It O W O Ir N D O � 4-) LL O rfr'" Profile: TABLE 1 - PERCOLATION TEST RESULTS Lot 7I Eagle Pines Pitkin County, Colorado feet descrintian LATE OF TEST; 51,14103 0-3 Topsoil, clayey; sandy 3 - 8 Sarni, clayey, slightly gravelly, moist, dense, dark red, with occasional boulders NO GROUND NATER WAS ENCOUNTERED WITHIN THE EXCAVATION AVG. HOLE DEPTH TIME DEPTH DEPTH CHANGE INTERVAL HOLE NUMBER OF HOLE, INTERVAL START, END, (INCHES) FERC FERC. (INCHES) (MINUTES) (INCHES) (INCHES) RATE (MPI) RATE, /Moil 1 26 20 17.50 Zv.5u 3.00 7 20 20.50 23.00 2.50 8 20 13.75 15.00 1.25 16 20 15.00 16.00 1.00 20 20 16.030 j 17.00 1.00 20 20 1 17.00 18.00 1.00 20 20 2 30 20 14.25 16.75 2.50 8 20 16.75 17.75 1.00 20 20 17.75 19.00 1.25 16 20 19.00 20.00 1.00 20 20 20.00 20.75 0.7.5 27 27 20 20.75 21.75 1.00 20 3 34 20 12.25 13.75 1.50 13 20 13.75 15.00 1.25 18 20 15.00 16.00 1.00 20 203 16.00 17.00 1.00 20 20 17.00 1 18.25 1.25 16 20 18.25 19.25 1.00 20 20 Joh tio. 15503W Pitkin ( Anty Environmental Health Departm, Permit for an Individual Sewage Disposal Sy: 0405 Castle Creek Road, Suite 10, Aspen, Colorado Phone 970-920-5070 / FAX 970-920-5077 Permit # 03007 Parcel ID # 2735-102-02-001 Type of permit New( X) Repair( ) Addition/Remodel to Name of Owner Lawrence and Joan Altman Street Address 200 W. Eagle Pines Property legal description Lot 1, Eagle Pines Size of lot 5.494 acres Total square footage of the hou 8,919.5 Water source Public Water System — City of Aspen # of bedrooms in house 6 # of offices, loft & similar sized room in house 0 Caretaker unit N/a Total square footage of th caretaker unit # of bedrooms in caretaker unit # of offices, I\;.no milar sized roo s in c etaker unit Designed for what # rooms (list) Six: Six bedrooms in hoaretaker unitPermit inn Designed by Church & A ociates Mailing Address 4501 Wads orth Blvd. What Ridge, CO 80033 Perc rate 59 Profile ho a depth 8 Depth to grou water or bedrock Greater than 8 ft Minimum Septic tank pacity 413 allons Minimum A orption area 2097 w/ 50% reduction Comments Septic permit approve per comp'ance with the a ineer design and specifications dated January 31, 2003 Any changes must be appr ed by thi epartment an the design engineer prior to them being made. Minimum horizontal dist ces betwe compone s of the system and physical features shall conform to the Pitkin County ISDS regulations. There must at least 0 feet between the house and the field. This system will have one 000 gallon single compartment tank followed by a 2000 gallon two compartment tank with n effluent filter on the outlet. Two distribution boxes will be used to distribute the effluent. Each must have a baffle a be of adequate s e to handle the flow. There will be 13 trenches, total of 135 gravelless chamber units. Trenches ing only 7 cha bers will be connected with a level manifold and served by a single outlet from the distribution bo There must a at least 6 feet of undisturbed soil between each trench. This department dod�oa of end rse any brand of products. This permit must be kept on-site during installation. The engineer must al in ection of the installation and submit an as -built letter to this department. This department must also be ca or an inspection with a minimum of 48 hours advanced notice. Permit approved by: �. al ()�t�l� �� Date: _") I B 03 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: Date: Engineer's Submittal for Septic Permit in Pitkin County Owner's Last Name: ALTMAN Location: LOT 1. EAGLE PINES Summary of information regarding new septic system: Type of system being proposed: GRAVELLESS CHAMBER -TRENCHES Other treatment processes being used: EFFLUENT FILTER Does the system use any mechanical parts? (Prohibited unless there is no alternative) NO Ifesy , explain why there are no alternatives Does the system require any maintenance other than routine pumping? YES If yes, who will do the maintenance? CLEAN FILTER WHEN SEPTIC TANK IS PUMPED Are any reductions being proposed? YES If yes, what makes the lot and soil conditions optimal? GOOD PERCOLATION RATES AND PROPOSING TRENCHES Which of the following are on the site or within setbacks? Closest distance of septic system to each feature 100 year floodplain N/A [X} well(s) 2'75 FEET irrigation ditches N A [] streams N/A [] ponds N/A Q other N/A What was the profile hole depth? S FEET What is the depth to groundwater? NLA What is the depth to bedrock? N A What assumptions, if any, were made in system sizing and design? (Include any local, site- specific data, such as months without snow cover, ratio of evaporation to absorption, etc. that are relevant.) If there are any variations from normal design, please explain how they can be demonstrated to improve treatment and protect water quality. NONE ASPEN%PITKIN ENVIRONMENTAL HEALTH DEPARTMENT ISDS DESIGN CALCULATIONS x ° Owner's Name �- Parcel ID #� � � �����: .,�.- House Size (sq. ft.) MJEW (75 gpd, 100 gpd, or 130 gpd) Number of Bedrooms in Main House Number 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 1820 State Review Required no Parc Rate Design Flow (Q) - potential bedrooms X 2 people/bedroom X gpd X 1.75 Q= 3185 Absorption Area (A= QJ5 X SQRT) A x 2988 sq. ft. of absorption area required 193 infiltrator units without reduction A maximam 50% 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: GOOD SOIL CONDITIONS AND PROPOSING TRENCHES A 1494 sq.fL with reduction 96 infiltrator units with redo n Type of tem: []Absorption trenches -{}Absorption bed [XI Gravelless chambers [jDry —7 well "Y aSeepage Pit 110ther Minimum tank capacity 3981 gallons SETBACK FROM WELL # of feet = 275 SETBACK FROM POND, STREAM OR IRRIGATION DITCH # of feet = 225 SETBACK FROM DRY GULCH # of feet = 200 FINAL INSPECTION BY: DATE: CHURCH & Associates, Inc. ENGINEERS & GEOLOGISTS May 15, 2003 John Muir, Attn: Kristen 201 Main Street, Suite 304 Carbondale, Colorado 81623 Subject: Revised OWS Design, Proposed Altman Residence Lot 1, Eagle Pines Pitkin County, Colorado Job No. 15503W Kristen, As requested, we have investigated subsurface conditions and designed a revised onsite wastewater system (OWS) for the proposed residence. Revisions are based on the results of our subsurface investigation, performed May 14, 2003. Our previous reports, dated January 31, 2003 and May 6, 2003 should be discarded to avoid confusion. SITE CONDITIONS The property is in a rural residential area of Pitkin County, where OWS are required. The proposed drain field areas have 10% to 15% slope to the north, a full cover of native grasses, and sparse pine trees. The residence will be served water by the local water district. PROPOSED CONSTRUCTION A seven -bedroom residence with a living area of 9000 square feet (SF) is proposed as presented on Figure 1. The OWS was sized based on 7 bedrooms and 1820 gallons per day (GPD) using Pitkin County Envir- onmental Health Department (PCEHD) loading of 130 gallons per day per person. The sewage loading with a peaking factor of 1.75 is 3185 GPD. The loading includes washing machines and garbage grinder. SUBSURFACE CONDTITONS A subsurface investigation was performed by digging three percolation holes, 26 to 34 inches deep, and one test pit, at the locations presented on Figure 1. Subsurface materials in the profile pit consisted of 3 feet of topsoil, underlain by clayey sand with rock fragments to the maximum depth explored of 8 feet. No ground water was encountered. Percolation tests indicate percolation rates of 20 to 27 minutes per inch (MPI). The average percolation rate is 22 MPI in the area of the proposed residence drain field. Percolation data is presented as Table 1. RECOMMENDATIONS The OWS installation requires two septic tanks with an effluent filter and seven gravelless chamber - trenches, as indicated on Figure 2. The OWS design is based on an average sewage load of 1820 GPD and a percolation rate of 22 MPI. The OWS installation must include one 2000 -gallon, single -compartment, precast concrete septic tank followed by one 2000 -gallon, two-compartment, precast concrete septic tank DENVER 4501 Wadsworth Boulevard Wheat Ridge, CO 80033 303.463.9317 Fax: 303.463.9321 Subsurface Twestigation and Revised OWS Design Job No. 15503W, 5/15/03 Page 2 with an effluent filter on the outlet. Seven chamber -trenches are required for the residence. Each trench must have one row of 14 -chambers for a total of 98 chambers and 1519 SF of infiltrative area. A flow splitter basin or a 7 -outlet, concrete distribution box that can be accessed from the surface must be used. Details of the design are presented on Figures 2 through 4. Vehicle movement over the drain field area during construction should be kept at a minimum to minimize compaction of the receiving soils. The bottom of the beds should be scarified with a pick, shovel, or backhoe bucket teeth prior to the addition of chambers. The surface of the field should be seeded after installation of the fields. A native seed mix should be sown at the drain field to revegetate the surface. These mixes do not require irrigation and develop a growth 10 to 15 inches high. No automatic sprinkler system should be installed over the trenches. OPERATION AND MAINTENANCE The owner must realize an OWS is different from public sewer service. The owner must be aware of and assume responsibility for maintenance of the system. In the absence of a monitoring program, the septic tanks should be pumped every two years. Effluent filters and screened vaults, as applicable, are to be cleaned during pumping. There are daily considerations such as not putting plastic or other nonbiodegradable materials into the septic system. Use of the Garbage grinder should be minimized. The backwash of a water softener may be harmful to the OWS. A separate drywell should be constructed for the backwash waste, if a softener is installed. Chemically treated water from a swimming pool or spas should not be introduced to the OWS. LIMITATIONS A contractor who is experienced in its installation should install an OWS design. Our investigation, layout, design and recommendations are based on data submitted. If subsurface conditions different from those described in this report are encountered, we should be notified to evaluate the change on the proposed OWS. If the health department modifies this design, we should be contacted to evaluate the impact on the performance of the OWS. The county and our firm must be contacted upon completion of the OWS All construction is to be in accordance with the ISDS regulations. Pipe type and size, burial requirements, septic tank construction, and other specifications, which are not depicted in our report, are to conform to the requirements of the ISDS regulations. The installer of the system is to have demonstrated knowledge of the PCEHD ISDS regulations and requirements. If there are questions, please call. The project engineer for this site is Tim Petz. CHURCH & Associates, Inc. Timothy R. Petz Project Manager TRP/erb 3 copies sent, via FED EX Reviewed by / Edward O. Church;, P.E. 5.5± ACRES SCALE LOT 1, EAGLE PINES 1"=40' PITKIN COUNTY, COLORADO ' 1 I � THE LOCATION OF EXISTING AND PROPOSED IMPROVEMENTS SHOWN HEREIN AND THE WELL AND/OR DRAIN FIELD LOCATIONS STAKED AT THE SITE ARE NOT THE RESULT OF A PROPERTY SURVEY. IMPROVEMENT LOCATIONS ARE APPROXIMATE. IT IS THE PROPERTY OWNER'S RESPONSIBILITY ' TO DEFINE PROPERTY BOUNDARIES AND ENSURE ALL ONSITE IMPROVEMENTS ARE LOCATED WITHIN THE PLATTED SITE AND 1 OUT OF INAPPROPRIATE EASEMENTS. ALL SEPARATION DISTANCES ARE TO BE VERIFIED PRIOR TO EXCAVATION. 1 I SPO ♦ 1 30' UTILITY EASEMENT ♦ 1 iIW INIr �„��. IIIillu�ill'�' 'I ' .�.._.. I .... " N � u (I11611t1 , 'III IIuNIi��I�P�IIU� , • '°� l�lm' I .�; I .... .. � • P `2 P"..3 I It .11111, It .................. ...v000-1� �l i r. M l ......;�� iii°'i7pAll .. �Pnlq i ��"� Poi+ .M . BUILDING —_ liiill!ilili lil�lilil'IiU u n. ENVELOPE �~ �, I Lll' .... :_:_........,.. __._... i1ilEIN'i'Nr icy;, �I �I�I IIII ti ... gg IUIINdi� pp Cpl' ,,,, .Iliiill � �� ��i�����R �, ,,..,�" :, "� • •� � '��I��II��� ::.,IQii�il I� � �I�Io�iPiH 15' _.. .. ". PIIII .. ........... 1 �. _...__.,.... Q�Iliy�i�l 1 PROPOSED 7—BEDROOM RESIDENCE 1 SITE PLAN AND LOCATION OF 05/16/2003 JOB NO. 15503W PERCOLATION HOLES REVISED FIGURE 1 5.5-t ACRES LOT 1, EAGLE PINES ,,/PITKIN COUNTY, COLORADO J# J# 1519 SF OF INFILTRATIVE AREA IN SEVEN GRAVELLESS CHAMBER -TRENCHES. EACH TRENCH MUST HAVE ONE ROW OF 14 CHAMBERS FOR A TOTAL OF 98 CHAMBERS IRS ,2- g N1, SCALE 1" 20 . .. ... . ........... . ... ... .... . ... ... ... ... . . ..... .... ... ..... CONCRETE DISTRIBUTION pip- ... .. ... ... 'yi'4 ell N. JOB NO. 15503W OBSERVATION/ VENT PIPES (TYP 6 :3 1 000 20' SE . ......... . . ......... ... ONE 2000 -GALLON, SINGLE -COMPARTMENT PRECAST CONCRETE SEPTIC TANK FOLLOWED BY ONE 2000 -GALLON, PRECAST CONCRETE SEPTIC TANK WITH AN EFFLUENT FILTER AT THE OUTLET. 7 -BEDROOM PRQP.Q$ED..- RESIDENCE . ...... ........ . . ......... .. . .......... __ . ... ........... . a .. ... .. ....'111111 i1 y p1,0 ...... . ... SEWER LINE I ... . ......... C LE 5 ...... ...... .. .. ... ... ... ... .. .. . ............ . . ......... . . . . ....... 11101, .M,:...... . ... .. .... 1100, . Xl; fliir ...... . .... .... .............. . . . ..... ... ... -BUILDING ENVELOPE LOCATION OF PROPOSED OWS 5/16/2003 REVISED FIGURE 2 I. .. .... .... .. ........... . ... 41, 4h1 dull ... . ...... �I�1. d.y lj� I ... ... .. .. ''''.:..........n: . ..... . 'yi'4 ell N. JOB NO. 15503W OBSERVATION/ VENT PIPES (TYP 6 :3 1 000 20' SE . ......... . . ......... ... ONE 2000 -GALLON, SINGLE -COMPARTMENT PRECAST CONCRETE SEPTIC TANK FOLLOWED BY ONE 2000 -GALLON, PRECAST CONCRETE SEPTIC TANK WITH AN EFFLUENT FILTER AT THE OUTLET. 7 -BEDROOM PRQP.Q$ED..- RESIDENCE . ...... ........ . . ......... .. . .......... __ . ... ........... . a .. ... .. ....'111111 i1 y p1,0 ...... . ... SEWER LINE I ... . ......... C LE 5 ...... ...... .. .. ... ... ... ... .. .. . ............ . . ......... . . . . ....... 11101, .M,:...... . ... .. .... 1100, . Xl; fliir ...... . .... .... .............. . . . ..... ... ... -BUILDING ENVELOPE LOCATION OF PROPOSED OWS 5/16/2003 REVISED FIGURE 2 C D W cnD-0Dr�u W n z o� rn< o rn C) �rnm > w Z O O Dnluoo c rn 11 r-nzm� -' 0-,DmG)Z� u 01 c. -{r mm O 0 -00�vD co CW G m o o z �Dr o 0 G Boz i D O � O CO z :: rn 3 0 mw z m N F m NOZ�7� m O n _N -i C/) z CD _-n (mDo n -Tl D �co O TIU) z n CJ) C) D z T m r D T m m 00 n ()l G) _` C� � N M 0 0 W W —I r Z m O O 6 c z z in n D D = � m = Dzo=;u(n C mO O m n D co .0 z—u —u — m . n cn0nzZD o -Ti rn==o w=U)rnrnZ D cn cn (n 3 cN i O- oo zu Z m- 00Dn =3mD D m 3 3�uCO W m mm ;uw cn Z7 m m:�E m m D O r o n 0 rr--- D z rnn>3or-z z�3�rnc3C D O ZO Z Z �] Z D 3 �3n-{ 3� zz�oz nn 0 rn� -I z0Mo DF) — I;umZ nD =m -0M mn-JN �p owno rn 0 z D v -I Z r X nno 0:J mr-Z X r- m0U) (n:Ez o rn Dor o --i W rn c nen m cn DOZ3 ry Zrnm N _ oO C m =nz D D n Z r -- O co cb 3 z cilG) _;u D o` O N r 1cn rn - (n U o n 3 j W 2 m m 3 z 3 C 3 O m cn rn m Z 0 C r m O X x m 0 C rn 0 D `D O X CD D Im O C r - m -D n� mn m = rnm 0 C r m CA CTI < 0m 71 r- �O�r- --i (n cn 7: M D D cN m cn O < zn m z m m m CD C-) X O O n x rn rnm fJ c0 D zW ci O z z F- m O D F- I CO m z ID m O T Cn --i DCi z D m 0 Cf) UD (_ O z co O X i U7 (n m D cJ4 CT, 0m Z < �n m Z —I m m 'D O D < \C �Dr °°n G Boz mrn -71z i z :: M mw n C -i oz CJ) (mDo n U7 (n m D cJ4 CT, 0m Z < �n m Z —I m m E w z m i o C-7 rn d- a c m N "IQ ` Z O W o' cr Y i W Qi _ a O • U < J F w W .�J L.L.. N �a— �a— uj .L2 -r-r _O m C6 C) d- cz Cz 0 CIO F- CL N U3 's F— U E O O O O N RS -0 N 0.2 O Li CZ C N F U W 0 C/ a o� U v U Cl) N � U N� E O U u. c� E U O U Q- o� �C c a) U) E 0 a (5 E (o 00, o, 0 0 ,3: i6 6 �o m CY) �o �e LO n.2 u0 " Z m _L , o 0 m 'C E m Y W— Q U A E I.Z c7 -76 s'11 ® w s m Y ' g'4 O u W0 CL c M w w 7pt w 03 O E U ik yC C •v C U UK� mar -- w o 6 �o m CY) �o �e LO n.2 u0 " Z m _L , o 0 Profile: TABLE 1 - PERCOLATION TEST RESULTS Lot 1, Eagle Pines Pitkin County, Colorado feet description DATE OF TEST: 5,14103 0-3 Topsoil, clayey. sandy 3 - 8 Sand, clayey, slightravell moist, dense, dark red, -with occasional boulders NO GROUND WATER WAS ENCOUNTERED WITHIN THE EXCAVATION DEPTH TIME DEPTH DEPTH INTERVAL HOLE OF HOLE INTERVAL START, END, CHANGE, FERC NUMBER (INCHES) (MINUTES) (INCHES) (INCHES) (INCHES) RATE (MPI) AVG. HOLE FERC. RATE, (UP11 1 26) 20s 7 1--f)-)n i z .amu .;n Lv...:; 3.00 f 20 20.50 23.00 2.50 8 20 13.75 15.00 1.25 16 20 15.00 16.40 1.00 20 20 16.00 1-"00 ! .00 J 20 20 17.00 18.00- 8.0 1.00 1 20 20 2 30 20 14.25 16.75 2.50 b 13 20 16.75 17.75 1.00 20 1.25 20 17.75 19.00 1.25 16 16.00 20 19,00 20.00 1.00 20 16.00 20 20.00 20.75 0.75 27 27 20 20 20.75 21.75 1.00 20 3 34 20 12.25 13.75 1.50 13 20 13.75 15.00 1.25 16 20 15.00 16.00 1.00 20 20 16.00 17.00 1.00 20 20 17.00 18.25 1.25 16 20 18.25 19.25 1.00 20 20 Job No. 15503 01 f I / ROAD AND UTILITY EASEMENT 102 544 LOT 1 �G F BENCHMARK: GROUND SURFACE AT 9Q CENTER STAKE OF / BUILDING / \ I ENVELOPE / BORING 2 P 1 \ ELEV. = 100' •\ I ASSUMED ( i A, ' BORING 1 PROFILE • P 4 APPROXIMATE SCALE 1" = 100' LEDGEND: • i 0 EXPLORATORY BORING PROFILE PIT PERCOLATION TEST HOLE BORING 3 BUILDING ENVELOPE -----------� -------------/ LOT 2 ROAD EASEMENT HEPWORTH-PAWLAK LOCATION OF EXPLORATORY BORINGS Fig 1 GEOTECHNICAL, INC. AND PERCOLATION TEST HOLES BORING 1 BORING 2 BORING 3 PROFILE PIT ELEV.= 111' ELEV.= 102' ELEV.= 100' ELEV.= 94' 115 110 105 c' 0 ami w 100 95 M 85 :! 30/6,10/0 50/9,15/0 WC=5.5 +4=41 —200=35 30/1,10/0 o. 56/12 NC=8.8 )D=127 �- 9/12 71/12 WC-- 4.6 +4=35 —200=42 LL=28 PI=15 54/12 WC=6.7 DD=127 42/12 54/12 28/12 115 We 54/12 WC=6.9 DD=116 30/1,10/0 JI •? 0. ono. a �.P 45/12 WC=9.8 DD=114 —200=38 71/12 95 46, E:17 :t 30/6,10/0 � 75 75 �. Note: Explanation of symbols is shown on Fig. 3. 102 544 HEPWORTH—PAWLAK LOGS OF EXPLORATORY BORINGS I Fig. 2 GEOTECHNICAL, INC. 9PWORTH-PAWLAK GEOTECHN]CAL, INC. TABLE 11 PERCOLATION TEST RESULTS JOB NO. 102 544 Note: Percolation test holes were hand dug in the bottom of backhoe pits and soaked on August 13, 2002. Percolation tests were conducted on August 14, 2002. The average Percolation rates were based on the last three readings of each test. HOLE NO. HOLE DEPTH LENGTH OF WATER DEPTH WATER DEPTH DROP IN AVERAGE (INCHES) INTERVAL AT START OF AT END OF WATER PERCOLATION _ (MIN) INTERVAL INTERVAL LEVEL RATE (INCHES) (INCHES) (INCHES)• (MIN./INCH) P-1 42 15 5 1 /8 I 45/8 i 1/2 4 518 4114 3/8 41/4 4 ( 1/4 4 33/4 I. 1/4 33/4 3 318 3/8 3 318 3 1/8 1/4 51 P-2 45 15 5 5/8 5 118 1/2 5 1/8 4 112 5/8 41/2 I 4 1/8 3/8 41/8 33/4 3/8 33/4 i, 3 1/2 I 1/4 3 1/2 31/4 ,. 1/4 51 P-3 40 15 43/8 4 3/8 4 33/8 518 33/8 25/8 3/4 25/8 21/8 1/2 21/8 1 718 1/4 1 7/8 1 518 1/4 45 P-4 40 15 6 518 6 5/8 6 53/4 1/4 53/4 5 1/2 1/4 I 5 1/2 5 1/4 1/4 1 51/4 51/8 1/8 5 118 5 1/8 90 Note: Percolation test holes were hand dug in the bottom of backhoe pits and soaked on August 13, 2002. Percolation tests were conducted on August 14, 2002. The average Percolation rates were based on the last three readings of each test.