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Home My WebLink Aboutpitkin.eh.264308103034 (1999)r_j Aspen/Pitkin Environmental Health Department Permit for an Individual Sewage Disposal System 130 S. Galena St. Aspen, Colorado 81611 Phone 970-920-5070 / FAX 970-920-5074 Permit # '19 O / F3 Parcel ID # Type of permit New( X) Repair( Name of Owner S&S Development Street Address Pitkin Iron Rd. Property legal description Size of lot 2.98 acres 2643-081-00-851 Addition to Housei LOT 6 PITKIN IRON Water source PRIVATE WELL Designed for what # rooms (list) Total square footage of the house SINGLE FAMILY 1,600 sq ft total FOUR TOTAL Permit information Designed by CHURCH & ASSOCIATES, INC. Mailing Address 4501 WADSWORTH BOULEVARD, WHEAT RIDGE, CO 80033 Perc rate 27mpi Profile hole depth 8 ft Depth to groundwater or bedrock Septic tank capacity design is for 2,000 total Absorption area Comments +8ft 1091 scl ft , 30% red. for infiltrator = 764 Septic permit approved per compliance with the engineer design and specifications dated July 7, 1999 and letter dated November 15, 1999. Any changes must be approved by this department and the design engineer prior to them being made. Design is for one 2,000 gallon two-compartment concrete septic tank with a pump and filter in the second chamber. Effluent is pumped to four trenches each with 1 rows of 13 chambers for a total of 52 units. Crossings of sewer and water lines and the minimum horizontal distances between components of the system and physical features shall conform to the Pitkin County ISDS regulations. This department does not endorse any brand of product. 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 48 hrs ahead for an inspection. Permit approved by: )L-",—. 1; "�- < Date: ! a V9 S Plans and specifications of the pro osecl'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 inspection approval: i Date: , C 'ASPEN/PITKII`" 7NVIRONMENTAL HEALTH DEPARTMENT 1 APPLICATION F : INDIVIDUAL SEWAGE DISPOSAL STEM 130b. Galena St.; Aspen Colorado 81611 Phone 970-920-5070/Fax 970-920-5039 Name of OWNER D E IFN 11� Owner's Mailing Address ��g / 2 N Business Phone: =.l 2 G L/ 11.1/Home Phone: 01-s' ZD 27 Primary Contact Person (all communication regarding this permit will go through this person) Name C V Company s Q L V e LO P.m L Contact Mailing Address 0 DC. j2 ft-/ ^% S Pe /V Business Phone : q2 �' 61y7Cell Phone : (Q 8 Llys Fax: -)- -6y Parcel 10 ;$ (available from assessor's office Z / u -3 0 at 920-5160 or at www.aspen.com/assessorf) _ ( Street address of property 2 e e ` oit b Legal Description: Lot ,Block Filing Subdivision v N Size of lot: � /b acres. Type of proposed structure: S� Size of bldg. envelope: Total square feet of house O D # of bedrooms in house y # of iffices, lofts & similar sized rooms in house Caretaker Unit: Attached ( ) Detached ( ) Total area(sq. ft.) of caretaker unit of Fhar!rnnmc in r-nratakar unit # of offices, lofts and similar size rooms of caretaker unit Permit is for. New 'Home (,(j Repair due to failure ( ) Remodel/Addition ( ) Emergency use ( ) Water: Private well (x) Spring ( ) Stream ( ) Community/Public Water System ( ) If community system: Name of system The fee for a !SCS application is $330 for a permit :hat takes 6 hours or !ess for the department to approve. If approval takes longer than 6 hours, a rate of 355 per hour will be charged. The maximum fee is 61000. The basic fee of 6330 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 ISCS permit. Application for an individual sewage disposal system is hereby submitted. I heresy 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 'Neils, contour intervals, buildings, property lines, ditches, slopes, waterlines, springs, suction or irrigation lines, drinking water cisterns, drain tiles, irrigation ditches, lakes, water courses, streams, fleociplaint, 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 ail approvals and permits have been obtained. The Aspen/Pitkin Environmental Health Cepartment, Pitkin County and employees of these agencies will be held harmless should the individual sewage disposal system fail or malfunction. The permit to construct is issued on information submitted by the applicant or his'her representa>"_.The owner assuml responsibility in case of failure of the system. Signature of applicant Received by Date ceipt # tj-) DateCC� CHURCH December 15, 2000 Semrau Building Design 208B East Main Street Aspen, Colorado, 81611 Associates, ENGINEERS & GEOLOGISTS Subject: Installation Observation, Proposed Single Family Residence Lot 6, Pitkin Iron Pitkin County, Colorado Job No. 11169-6 Gentlemen, As requested, we observed the installation of the onsite wastewater system (OWS) for the subject site on October 3, 2000 and December 13, 2000. The system was designed under our Job No. 11169-6, dated July 7, 1999. The system includes the installation of a 2000 -gallon, two-compartment, precast concrete septic tank with a pump in a Biotube vault, and three chamber -beds, each bed with two rows of 9 chambers for a total infiltrative area of 837 square feet (SF). A distribution box was installed to distribute effluent throughout the beds. An OWS as -built drawing is included as Figure 1. The pump, alarm, and Biotube vault were in place at the time of our visit. The construction foreman, Walter Hooker, may activate the pumping system at his discretion. The components of the OWS were installed in conformance with our plans and specifications. If there are questions or if we may be of further service, please call. Sincerely, CHURCH and A r_'--CeL Edward O. Church, EOC/trp 40 0, G9c� 9 13172 2 copies sent copy to APEHD, Attn: Nancy MacKenzie DENVER 4501 Wadsworth Boulevard Wheat Ridge, CO 80033 CASTLE ROCK 303.660.4358 303.463.9317 Fax: 303.463.9321 EVERGREEN 303.816.1455 LOVELAND 970.663.2124 /\ PITKIN IRON •�'' LOT 6 loe 3.2 ACRES SCALE NEIGHBORS ,•Q�� DRAIN FIELD 0►' G BUILDING EN OPE r �`— CLEANOUT 000 --"� 2" PVC LINE ONE 2000 GALLON TWO COMPARTMENT PRE—CAST CONCRETE SEPTIC TANK WITH PUMP IN BIOTUBE VAULT D'15TRIBUTION BOXs$° � Fj `30, Iles s 837\F OF INFILTRATIVE AREA IN TH E GRA LLESS BEDS GT WITH rNf ILTRATORS/CHAMBERS EACH B 2 CHAMBER WIDE (6 FEET) 9 CHH?-IBERS iN LEIVG I H ( ' .25 OWS AS -BUILT DRAWING JOB N0. 11169-6 \ \ �N, FIGURE 1 . , . ASPEN/ PITIQN EA91ZONMENTAL HEALTH DEPARQIENT ISDS DESIGN CALCULATIONS Owner's Name Parcel ID # SINGLE FAMILY with 4 BEDROOMS House Size (sq. ft.) >2000'. (75 gpd, 100 gpd, or 130 gpd) 75 / Number of Bedrooms in Main House 4 V Number of Offices, Libraries, Studies, Similar -sized Rooms in Main House Q; Number of Bedrooms in Detached Caretaker unit 0: 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 600 State Review Required? J no Perc Rate 27 (T) Design Flow (Q) = # potential bedrooms X 2 people/bedroom X gpd X 1.75 Q= 1050 V Absorptior Area (A= Q/5 X SQRT) A = 1091 sq. ft. of absorption area required 70 infiltrator units without reduction A maximum 30% reduction is allowed for use of deep gravel or gravelless chambered system, only if the lot size and soil conditions are optimal. If a reduction is being proposed, describe why lot size and soil conditions are optimal: GOOD 5011. CONDITIONS, DOSING GRAVF.I.I.FSS TRENCHFS A = 764 sq.ft. with reduction ,% 49 infiltrator units with reduction V Type of system: []Absorption trenches []Absorption bed [x] Gravelless chamhers []Dry well []Seepage Pit []Other Minimum tank capacity 1313 gallons t- SETBACK FROM WELL # of feet = 104 v/ SETBACK FROM POND ,,STREAM OP. IRRIGATION DITCH # of feel = 54 �/ SETBACK FROM DRY GULCH # of feet = 29 FINAL INSPECTION BY: DATE: • 4 Engineer's Submittal for Septic Permit in Pitkin County Owner's Last Name: Location: PITKIN IRON, LOT 6 Summary of information regarding new septic system: SINGLE FAMILY WITH 4 BEDROOMS Type of system being proposed: SEPTIC TANK AND GRAVELLESS CHAMBERS Other treatment processes being used: NONE Does the system use any mechanical parts? (Prohibited unless there is no alternative)YES If yes, explain why there are no alternatives A PUMP IS REQUIRED DUE TO ELEVATION DIFFERENCE FROM BASEMENT TO DRAIN FIELDS 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 SOIL CONDITIONS AND DOSING TRENCHES Which of the following are on the site or within setbacks? Closest distance of septic system to each feature [] too year floodplain N_A [] well(s) >1o4 FEET [] irrigation ditches NLA [] streams >54 FEET [] ponds NL [] other features NJA What was the profile hole depth? 8' What is the depth to groundwater? N A What is the depth to bedrock? NLA 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 )w✓ CHURCH & Associates, Inc. ENGINEERS & GEOLOGISTS July 7, 1999 Semrau Building Design 208 'h East Main Street Aspen, Colorado 81611 Subject: Subsurface Investigation and OWS Design, Proposed Single Family Residence Lot 6, Pitkin Iron Pitkin County, Colorado Job No. 11169-6 Gentlemen: As requested, we have evaluated subsurface conditions at the subject site and prepared an onsite wastewater system (OWS) design for the proposed single family residence. We investigated subsurface conditions on June 23, 1999. SITE CONDITIONS The property is located along Colorado State Highway 82 and borders the Roaring Fork River on the south side, as indicated on Figure 1. The site was originally a concrete batch plant and has layers of gravelly fill remaining onsite. The proposed drain field area is relatively flat. There is no vegetation. PROPOSED CONSTRUCTION A single-family residence with a total of four bedrooms is proposed at the location presented on Figure 2. Each of the units will have an area of less than 2_000 square feet (SF) as proposed. The OWS is sized on 4 bedrooms, which results in an average daily flow of 600 Gallons Per Day (GPD) using Aspen/Pitkin Environmental Health Department (AYEHD) loading of 75 gallons per day per person. The sewage loading with a peaking factor of 1.75 is 1050 GPD. This loading includes a dishwasher, garbage grinder, and wash- ing machine. The drain field is to be a minimum of 104 feet to all existing and proposed wells. SUBSURTACE CONDITIONS We performed a subsurface investigation by performing 3 percolation tests, at depths of 24 to 35 inches, and observing one profile pit at the locations indicated on Figure 2. Subsurface conditions in Profile I consisted of 3 feet of sandy clay with gravel, underlain by sandy clay with large cobble to the maximum depth explored of 8 feet. Percolation rates �,varied from 17 to 40 minutes per inch (MPI), and indicated on Table 1. The average percolation rate is 27 MPI. No free ground water was observed in the test pit. DENVER 4501 Wadsworth Boulevard Wheat Ridge, Co 80033 CASTLE ROCK 303.660.4358 303.463.9317 Fax: 303.463.9321 EVERGREEN 303.816.1455 OWS Design Job No. 11169-6 Page 2 RECOMMENDATIONS We recommend the installation of one septic tank, an effluent pumping system, and four chamber -type drain field trenches installed at the locations presented on Figure 2. The OWS design is based on an ave ?. 00a sewage load of 1050 GPD and a percolation rate of 27 MPI. We recommend the installation of o �.. 11� two-compartment pre -cast concrete septic tank an effluent pump in an Orenco Biotube' vault as indicated on Figure 4. With basement plumbing and the relatively flat sites, the septic tanks will be installed at depths of 8 to 10 feet. Risers must be installed to bring all access lids to the ground surface. A um required to accommodate basement plumbing and to distribute the effluent to the trenches to increa� Da performance of the field. We recommend a distribution box to distribute effluent to the fields. The pump 13 must have a minimum flow rate of 25 gallons per minute and at a total dynamic head of 19.1 feet. There should be an approximate 250 -gallon dose per cycle. Pump details are presented on the pump curve. We recommend the installation of four trenches, each having one row of 13 chambers, as indicated on Figures 2 and 3. ff Ll If additional bedrooms are anticipated in unfinished areas, we recommend sizing of the OWS for the build -out number of bedrooms. The installation of an OWS for the build -out number of bedrooms is most economical in the long term. Equipment movement over the drain field area during construction should be kept at a minimum to reduce compaction of the receiving soils. We recommend the bottom of the trenches be scarified with a pick, shovel, or backhoe bucket teeth prior to the addition of dispersal gravel. We recommend the surface of the field be seeded after installation of the field area. We recommend using a native seed mix available at seed stores. These mixes do not require irrigation and develop a growth 10 to 15 inches high. No automatic sprinkler system should be installed over the fields. 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, continued maintenance of the system. In the absence of a monitoring program, we recommend the septic tank be pumped every two years. Effluent filter 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. Garbage disposal use 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 An OWS design should be installed by a contractor who is experienced in its installation. Our investigation, layout, design and recommendations are based on data submitted. If subsurface conditions considerably different from those described in this report are encountered, we should be notified to evaluate the effect on the proposed OWS. If the health department makes modifications to 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 OWS Design Job No. 11169-6 Page 3 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 APEHD ISDS regul ' equirements. CHURCH & eO!V-A,A Edward O. Church, EOC/trp 3 copies sent i 9'P0 ;0 2. t�S/tk tat ENG I•'I I KIN IHUN/HIVL-H HANUH 5Ui31JIVI;iIUN PITKIN COUNTY, COLORADO lk �s ' I I I I FS �y 10 PROPOSED DRAIN FIELD ' I BUILDING WELL / I ENVELOPE I WELD _ RIVER RANCH LOT A PROPOSED - 5_9 ACRES < \F� // DRAIN FIELDS F'I TK IN IF20NOTi 1.5 At ACRES COT Z �• ;' ACLS ��'� BUILDING - 1 o� 3N %� .per <Qti \ ENVELOPES WELL40 O \ //j\�jR�cs,:A• XQp/\/WELL*\ - \ \/ \ /fo� 2c'• RIVER RANCH d• ,nom.• ��G \ LOT D \ \v q� O,p .'� C 2 <o \ 3.6 ACRES PROPOSED \ n DRAIN FIELDS / \ '� \ ' �• CONTOURINTERVAL 4 FEET. PROVIDED BY ROCK CREEK STUDIO BUILDING PROPOSED ♦ �/ a �c \. \ ENVELOPES \ DRAIN FIELD �6 s, ♦ o �'gy fi �o4y 19 , VICINITY SITE PLAN \\ IRRIGATION DITCH 1" = 200' JOB NO.11169 FIGURE 1 PITKIN IRON LOT 6 SCALE 3.2 ACRES `� i" = 30' NEIGHBORS Q �e DRAIN \FIELD N t UILUINU TIVVCLUFF \ -A ® ` CLEANOUT TO BE PLACED � AT EXTERIOR OF FOUNDATION WALL 2" PVC LINE ONE 2000 GALLON TWO DISTRIBU`-ION BOX '� COMPARTMENT PRE -CAST CONCRETE SEPTIC TANK WITH PUMP IN BIOTUBE VAULT r �z F ... )f- I t. ( , 806 SF OF INFILTRATIVE AREA IN GRAVELLESS TRENCHFS WITH INFILTRATORS/CHAMBERS EACH TRENCH - I CHAMBER WIDE (3 FEET) - 13 CHAMBERS IN LENGTH (81.25 FEET) LOCATION OF PROPOSED OWS FIGURE 2 TYPICAL PLAN VIEW - N.T.S. a 4 J)UMr-UULL t+U rtrcrumtA i Lu PVC PIPE HUNG ACCORDING TO MANUFACTURER SPECIFICATIONS (PIPE INSTALLED LEVEL) (TYPICAL CROSS-SECTION - N.T.S. 4" SCHEDULE 40 PVC OBSERVATION/VENT PIPE WITH CAP 2.5' 1VAX J I IBACKFI ' MIN. I DES AND SPECIFICATIONS STRUCTURE - 4 BEDROOMS, <2000 SF LOADING - Q - 75 GAL/DAY/PERSON TOTAL LOADING (Q X 1.75) - 1050 GPD PERCOLATION TEST - 27 MPI AREA - (Q X SQRT T)/5 AREA - 1091 SF REDUCTION FOR USE OF CHAMBERS - 30% TOTAL AREA - 764 SF JOB NO. 11169-6 FOUR TOTAL TRENCHES 4" SCHEDULE 40 PERFORATED PVC PIPE HUNG ACCORDING TO MANUFACTURER SPECIFICATIONS SL OPE F. OR �RAINgGE ,\3 EXTENT OF EXCAVATION GRAVELLESS CHAMBER 3' BY 6.25' TRENCH SPECIFICATIONS NUMBER OF TRENCHES - 4 LENGTH OF EACH TRENCH- 81.25 FEET, 13 CHAMBERS WIDTH OF EACH TRENCH - 3 FEET, 1 CHAMBERS TOTAL NUMBER OF CHAMBERS - 52 CHAMBERS TOTAL AREA - 806 SF DRAIN FIELD DETAILS ;TRIBUTION BOX E EFFLUENT INLET 1/8" PER FOOT DROP) LINE TO ADDITIONAL BED TYPICAL DISTRIBUTION BOX - N.T.S. APPROX. PLAN VIEW BAFFLE INLET (OPTIONAL) 2' AP'PROX. rINLET OUTLETS INLET OUTLET VIEW VIEW CONCRETE DISTRIBUTION BOX OR EQUIVALENT OUTLET * MINIMUM OF SEVEN OUTLETS NEEDED TREATMENT UNIT SPECIFICATIONS TOTAL CAPACITY — 1.75 X Q X (30 HOURS/24 HOURS) = 1313 GALLONS RECOMMENDATION — ONE GALLON TWO COMPARTMENT PRE—CAST CONCRETE SEPTIC TANK WITH A PUMP IN A�tIOTUBE VAULT. FIGURE 3 1.5' APPROX. "?08" 1' APPROX. INLET OUTLET VIEW VIEW CONCRETE DISTRIBUTION BOX OR EQUIVALENT OUTLET * MINIMUM OF SEVEN OUTLETS NEEDED TREATMENT UNIT SPECIFICATIONS TOTAL CAPACITY — 1.75 X Q X (30 HOURS/24 HOURS) = 1313 GALLONS RECOMMENDATION — ONE GALLON TWO COMPARTMENT PRE—CAST CONCRETE SEPTIC TANK WITH A PUMP IN A�tIOTUBE VAULT. FIGURE 3 PROFILE T, -.E 1 -PERCOLATION TEST RE: _TS Lot 6, PITKIN IRON Pitkin County, Colorado DATE OF TEST: 6-23-99 Leet aescription 0-3.0 FILL, Sandy Clay with Gravel and Cobbles 3.0 - 8.0 lClay, Sandy with larqe Cobbles, Stiff, Moist, Brown/Light Brown INO GROUND WATER WAS ENCOUNTERED WITHIN THE EXCAVATION 1 AVG. INTERVAL 3.75 DEPTH TIME DEPTH DEPTH HOLE HOLE CHANGE, PERC. OF HOLE, INTERVAL, START, END, PERC. NUMBER (INCHES) (MINUTES) (INCHES) (INCHES) (INCHES) RATE RATE, (MPI) (MPi1 1 24 30 3.75 7.00 3.25 9 30 2.25 5.00 2.75 11 30 5.00 6.50 1.50 20 30 6.50 8.25 1.75 17 17 3 35 30 6.00 9.00 3.00 10 30 1.50 3.50 2.00 15 30 3.50 5.00 1.50 20 30 5.00 6.25 1.25 24 24 NUMBER OF HOLES 3 AVG PERCOLATION RATE (MPI): 27 c Remarks: Holes presoaked prior to data collection LABORATORY TEST DATA Dry Density (PCF) H2O Cont M Gravel (%) Sand M Silt & Clay M Liquid Limit Plasticity Index Job No. 11169-6 CHURCH & ASSOCIATES, INC. Effluent Pumping System Notes: 1. Install Pressure Relief Valve At High Point in Pump line. 2. Audible/Visual Alarm.. In building. Alorm Level 3 Inches Above On Float Level Of Tank To Be Installed On Dedicated Circuit. 3. 1500 Gallon Two Compartment Pre—cost Concrete Septic Tank. 4. Risers to surface: two Conduit Seal Slope Ground Conduit to — Away from Riser Control Panel SIRO FTM Height Varies 18' Minimum Inlet Tee Disclosure: The owners of Church do Associates, Inc, also own S.C.G. Enterprises, Inc. which distributes Orenco Systems Inc. products Orenco Systems® Incorporated Fiberglass Gasketed Lid with Stainless Steel Bolts S94 PVC PVC Riser with Grommet(s) Splice Box (bond to tank adapter with recommended adhesive) PVC Splice Box with Cord Grips Discharge Assembly Flexible Hose ' Effluent Discharge Tank Adapter (cast or bolted) Alarm Level Control Float Assembly MFEPR On/Off I Redundant Off W/Alarm Check Valve (optional) Vault Inlet Ports Flow Inducer 1/8' Weep Hole Effluent Pump (30 gpm at 15 feet of head) Filter Cartridge Drain Port 8iotube® Pump Vault _— __- --- --_- SVT1248-24EFI Patents j 4,439,323 & 5,492,635 Foreign Patents Pending -TD-3 D 1997, Orenco Systems, Inc. Rev. 1.0 EDW-TD-.1 Job No. 11169-6 Figure 4 CHURCH & Associates, Inc. 7/8/99 Project: Job No. 11169-6 Pump System Design Criteria 50 P3015 - 6 stage I P3010 - 5 stage [_ P30 07 - 4 stage I— P30 05 - 3 stage` 0_L 0 Effluent Pumps 1/2 Hp to 11/2 Hp 60 Hertz 115/230 Volt Curve pc3 I T_ i 250 Design Flow Rate i 25.0 Distributing Valve Model (# of Zones) none i Lift to Distribution Point 15.0 feet Discharge Assembly Size 1.25 I Transport Line Size 2.00 inches 200 Pipe Class/Schedule 40 Transport Length 85 feet Flow Meter none 'Add-on' Head Loss 0 Friction Head Losses: Head Loss in Transport Pipe 0.9 feet 2 150 Head Loss through Discharge Assembly 3.1 feet o Head Loss through Distributing Valve 0.0 feet Head Loss through Flow Meter 0.0 feet U Size Pump for: E DESIGN FLOW RATE 25.0 0 0 100 TOTAL DYNAMIC HEAD 19.1 50 P3015 - 6 stage I P3010 - 5 stage [_ P30 07 - 4 stage I— P30 05 - 3 stage` 0_L 0 Effluent Pumps 1/2 Hp to 11/2 Hp 60 Hertz 115/230 Volt Curve pc3 I T_ i "Available in 115V or 230V i i I I 10 20 30 40 50 Net Discharge, GPM r 1 Nov 16 99 03:16p November 15, 1999 E n CHURCH CHURCH & Semrau Building Design 208 1/z East Main Street Aspen, Colorado 81611 ENGINEERS & GEOLOGISTS 3034639321 Inc. p.I Post -its Fax Note 7671 Date i 1 f pt of ges To kk�n , l:.l. From .{ ^tl�1 �7 Co./Dept. r � T -V JJ Co. C-cl &,' JC Phone # Phone # 3 c7 7 4c.p3 - q -31 -7 Fax # " -ID --q Zo Fax # —01-3 Z Subject: General Revisions, Proposed Pitkin Iron, way Pitkin County, Colorado Job No. 11169 Gentlemen: Per discussions with Nancy MacKenzie of the Aspen Pitkin Environmental Health Department, we have made general revisions, corrections and clarifications with respect to proposed Pitkin Iron OWS. 1. Any location where the residential water line comes within 10 feet of the proposed sewer line a "lining" or "casing" of the water line is required. Pipe of Schedule 40 rating or better is required, ridged end caps of equivalent grade must be glued in a watertight fashion to the ends of the encasement. 2. All distribution boxes must 1 foot by 3 feet and require a baffle to disperse effluent at the inlet. 3. Septic tanks at Lots 2 and 4 must be upgraded from 2000 -gallon to 2500 -gallon two-compartment pre -cast concrete septic tanks with a pump in a BiotubeTM vault. 4. The septic tank at lot 6 needs to be upgraded from a 1500 -gallon to a 2000 -gallon two-compartment pre -cast concrete septic tank with BiotubeTM vault. 5. The average percolation rate for lot 4 is 31 minutes per inch (MPI), rather than 24 MPI. 6. A total of 99 chambers are proposed at lot 5; three beds, each having 3 rows of I I chambers. Thank you for your time in �,M! E CHURCH & Associ »c 0. 172 ..• G�• i Co`ard O. Church, 10 _gfiN1 E� EOC/trp call Tim Petz at 970.948.5803 with questions or comments. 2 copies sent copy and FAX to .APEHD, Attn: Nancy MacKenzie, fax: 970-920-5074 urnvtn 4501 Wadsworth Boulevard Wheat Ridge, CO 80033 CASTLE ROCK 303.660.4358 303.463.4317 Fax: 303.463.9321 EVERGREEN 303.816.1455