Loading...
The URL can be used to link to this page
Your browser does not support the video tag.
Home
My WebLink
About
IMPV-05-2022-170601.TIF
_ow, CAI AWI1A(T)V\I1 (•s'p '► t l'uhl.e Ikalth Ikparhneni tiuhirvnuni le! I it immortal Ilcalih(h$ on I'INN 369704935952 �\/4 ItI nos tti'&2s GN,.rrnmcnt IMnc.Ne..tun N(' :PAXfait tfIIn Site Address: 7093 COVE CREEK DR.SHERRILLS FORD NC 28673 Name on Permit: TERRY 8 LISA HOWELL Property Size: Acres 0 53 Directions: NC 16 S.L on Buffalo Shoals,R on Little Mt.Ron MI Beulah,L on Lineberger,L on Mt Pleasant.Ron Tradwood Dr.L Cove Creek Owner/Authorized Representative Acknowledgement of Permit Receipt /�f` I eenil that I am the ns tier or authorised agent um ncr's authuri/al ion required)representing the sew lief ul the property described abuse. � As the property owner or authorized representative.I have received the above referenced permits)as requested in the application for service RItPR-02-2022-40048,by the following method(s): Received in Person Facsimile Transmittal(Return limn with signature required) Electronic Image Transmittal/li-mail (Return receipt required) As the property owner or authorized representative I have reviewed and understand the specific conditions V of the permit issued, and further understand that all applicable regulatory requirements specified under the North Carolina Laws and Rules for Sewage Treatment and Disposal Systems(15A NCAC 18A.1900), and/or Well Construction Standards(I5A NCAC 2C.0100), shall apply to the issuance of this permit and the construction oldie wastewater system and/or water supply well permitted. Permit Issue Dale:05/03/2022 ''``� _ '' 0 Owner/Authorized Representative Signature J ¢rlf7�!'c-a -mil Date 61/0/Z.11L2- ---------------------------- --------------------- G Documentation of Pcrmil(s)Transmittal (permit transmitted by electronic or other means) I'cnnit transmitted by fnwin'ujlu'r.s ur.st'mlingliernNU (/T�(�e Date/Time Slt%D Signature �/ Method: Fits `r Email _'IS Mail Other k pt,� Owner's request to send by the above Indicated method of transmittal in lieu of signature i' We wantt tto hear from yoPlease hake a few momentts tto comptette our custtomer service survey ate http://www.surveymonkey.com/s/EHCustt0mer5ervice �C'Ir►{hweilusegrt 0. talk n•nt:n:: ii�i • e. y, CATAWBA COUNTY Case# IMPV-05-2022-170601 t Public Health Department Subdivision s Environmental Health Division PIN# 369704935952 ` PO Box 389,25 Government Drive,Newton,NC 28658 LOT# Site Address: 7093 COVE CREEK DR,SHERRILLS FORD NC 28673 Name on Permit: TERRY&LISA HOWELL Property Size: Acres 0.53 Directions: NC 16 S, L on Buffalo Shoals, R on Little Mt, R on Mt Beulah, L on Lineberger, L on Mt Pleasant, R on Trailwood Dr, L Cove Creek Improvement Permit AN AUTHORIZATION TO CONSTRUCT MUST BE ISSUED PRIOR TO BUILDING PERMITS THIS PERMIT IS NOT FOR SEPTIC INSTALLATION Permit Category: New Septic Wastewater Flow 360 g,p,d Type of Facility: Primary Residence-New House Basement? Yes Basement Plumbing? Yes Bedrooms: 3 Water Supply: Private Well Maximum Occupants: 6 INITIAL SYSTEM SPECIFICATIONS Proposed Wastewater System: DRIP IRRIGATION System Classification: VA-SAND FILTER PRETREATMENT Pump Required ***** Operator Required REPAIR SYSTEM SPECIFICATIONS Repair System Required? Not Required Permit Conditions: This permit issued pursuant to Section 11.(c)of SL 2018-114 using the signed and sealed LSS Evaluation attached here. Catawba County Environmental Health has not evaluated soils or site conditions for this property. Furthermore, CCEH has not field-verified soil descriptions submitted by the Licensed Soil Scientist. CCEH exclusively used the LSS evaluation and system design proposal to permit the septic system and future septic repair area. Catawba County Environmental Health is not responsible or liable for accuracy of soil descriptions or septic system design for this permit(s) Prior to CCEH's inspection of the system installation, all property corners must be surveyed, all property lines must be marked,and the 50 ft.lake setback,as applicable, must be surveyed. No deviation from the permit is permissible. If the system cannot be installed exactly as proposed by the LSS, maintaining all applicable setbacks under 15A NCAC 18A.1 900,the property owner is responsible for a LSS resubmittal under SL 2018-114 Section 11.(c ); new permit fees applicable. Do not drive, grade,cut,or fill over the septic system area/ septic repair area. Damage to the septic areas will result in permit revocation. chprmut 05/04/2022 14:11 I M PV-05-202.�)_170601 �� � CATAWBA COUNTY Case# Public Health Department Subdivision „� Environmental Health Division PIN# 369704935952 PO Box 389,25 Government Drive,Newton,NC 28658 LOT# w Site Address: 7093 COVE CREEK DR, SHERRILLS FORD NC 28673 Name on Permit: TERRY&LISA HOWELL Property Size: Acres 0.53 Directions: NC 16 S, L on Buffalo Shoals, R on Little Mt, Ron Mt Beulah, L on Lineberger, L on Mt Pleasant, R on Trailwood Dr, L Cove Creek Landscaping or other site alterations that potentially divert groundwater or surface water toward the septic system, or prevent proper drainage away from the septic system, including the direction of gutter flows or foundation drains,is not approved,and may result in failure to approve the initial system Installation,or the suspension/revocation of existing permits. The issuance of this permit by the Health Department does not guarantee the issuance of other permits. It is the responsibility of the applicant /property owner to insure that all Catawba County Planning/Zoning and Building Inspections requirements are met. This Improvement Permit is subject to revocation if the site plan,plat or the intended use changes,or if site conditions are altered. The Improvement Permit is not affected by a change in ownership of the property. This permit was issued in compliance with the provisions of the North Carolina'Laws and Rules jor Sewage Treatment and Disposal Systems'(15A NCAC I 8A.1900). Neither Catawba County nor the Environmental Health Specialist warrants that the septic tank system will continue to function satisfactorily for any given period of time. Any permit issued for a conventional system may be used for an accepted system without Environmental Health authorization or permit modification. Please notify Environmental Health of this change prior to system installation. 414A filill 05/03/2022 Authorized State Agent Permit Issuance Date 5/3/2027 Permit Expiration Date No grading or construction activity is allowed in areas designated for system and repair without approval of the Health Department. ehlk mi i I 05/04/2022 14:I I w+.w"=iwiwrro .a S454—ZO,—.Zf vxnotYa �ou' unaa MOO aso� smxa�s " .. a iS JMr o••� 69Z9Z ON '31L01N HJ . ., �— 1D 3NIN031 9Z08• QYO}I 7I832I� c'IAO� £BOb �9 fgf - Rg R �« vd'salel)ossy T[3AOH VSII aNV MINI amaarsaN pwouaaa 8 , .xr ' r ,,_I! IiI ''.62Ais a LuD1Saa IKowa3fd ` 0,a3 NTH BJJS MESAS OWE dINU S3YAUflSHf1S�'••''.` ��Ea![oi1l ; %..)3 -3 4. 4444 `-" T — qq J 1 JIIII II AmJiII P iILIII J H 59• c-4 ' ' ' ' •"' li illp0 11 li al E Id; igii ` �a III 9i6 i Iii;alali Rp11 15i !iiIii o v/ `1 1- t!6! Re13.e�4,! g� � � 9@ ' 1 $ dB/fd1/ialllta e o !.-- 1 U E J W z ` bg H = zr _ x- a`e , „lt ill !' llI , r 6 vzn // w � /fit'a, i � ` rr h " Qis ... c2--et� t cr- \ 1. Z ylI 1.:r , 9 r, F e g;& \ * P 6 - i,- o .10: \ \/ _ __ / , IP u Z 06 Sig s I d 4- i rrs AY rs tiem2xrA•_clZ+rt1 OM'M+b M`]�JW'cr 5=! 1 4It -*'+M'.3•r I 1. - t- )11 Pm _ 4 1 _ VI!' . . ., ii r—ir�I --1 !Oil ', r _... , ; . 4 Ar i— —1 li ' 1 kill. ilill . 11 1111 11 , 7 11 j9 . i1; 111 �. 11111trtt'd )i ir .. # ! I 4 i l _ !-0 ' ;! J` 11 P� Ili I, ! 9l 1e II :� Ii i il , a; + 4 Et 1 - ' 191 • i, . , . ,. 1 ill i r I _ e ii li tiszo , iL I 41'1 _4 j / H), -- ll qi !IV ■ I. ' ; 1 i i ii V 1 %617. '1. R 11 it II 1' L t e 1, . 1 ° 11 I ! �I� to !1 i 11 I oil ftli� ® I 1 el I (till! — I allaill' 'i if il i `., . I� !e !I i� ( I a �II 41 tL 1 ° r _ . .a: 114I r- a,I I ;: 1 • lh : , l ! 4! g :fi,: tktii II i I a .PY xlIII a !III ,:N:P :!!!W ; Mil 1. iiii pcii , *___, . . . . . . i !2 lee�e1;e f; {�� r'�e 1 ° 1 ! � a,e f i1121s � # + 1 fig t11�� ,:1s. ati1 � �1f ��� IIEI 114 re IIIIII' ' II 1 Ifli I,t ;.ililliiiiii k iI !t +iif . .l. hn j3 .+PI d 1 ' 1/11_ !' W:� +, 1 l .e. . 11 97 hi 'U 1 !�� f : e � a .1 I + P. -% SUBSURFACE DRIP SELmC SYST!I DETAILS •.PIEDMONT DESIGN �' i it\- 1 HRDROOM RESIDENCE AND U 1 NOIf61L R A..ocW.0 ♦,. • q. 7097 COVE CREEK ROAD 4ML Lt M 1 L l I e LSNQRDJS FORD, um COOIe17,NORTR GRUW4l sz1 .07 7!79 - ,.. SPECIFICATIONS, CALCULATIONS, & SUPPORTING MATERIAL FOR A GROUND ABSORPTION SEWAGE DISPOSAL SYSTEM USING SEPTIC TANK, TS-II ADVANCED TREATMENT, AND A LOW PRESSURE SUBSURFACE DRIP DISPOSAL SYSTEM TO SERVE A NEW 3 BEDROOM RESIDENCE 7093 COVE CREEK ROAD SHERRILL'S FORD, CATAWBA COUNTY, NORTH CAROLINA January 26, 2021 Prepared for: Terry and Lisa Howell 8026 Leonine Ct. Charlotte, NC 28269 Phone: (321) 402-7575 ,,\ 'II llllf///I Prepared by: ,\\\` ,C�, CARp4/ PIEDMONT DESIGN ASSOCIATES, P.A. 125 East Plaza Drive, Suite 101 ' 'cif ' Mooresville, NC 28115 Phone: 704-664-7888 / 7 27 Fax: 704-664-1778 NCBELS No.: C-1007 �'�'q i `„‘' Q SECTION I -GENERAL Terry and Lisa Howell are seeking a septic system permit to construct a new residence on the lot located at 7093 Cove Creek Road, Catawba County, North Carolina. Wendell Overby, LSS has proposed a 3-bedroom subsurface drip system to be located on site with a loading rate of 0.10 G/D/SF for the new primary system. The lot is repair exempt, however,there is additional area suitable for subsurface drip system and it is highly recommended to leave this area undisturbed, The new septic system treatment and disposal system will consist of a new baffled septic tank with a new effluent filter,Orenco AX-20 RTUV with TS-II advanced treatment technology with incorporated recirculation tank and field dosing tank with pumps, Other components include drip headworks and subsurface disposal. Area shall be barricaded from any future traffic during site and home construction. These specifications and design plans have been prepared for a subsurface effluent drip disposal system using a new septic tank, recirculating textile-media filterw/incorporated recirculation, UV disinfection and field dosing tank with a dual zone subsurface drip disposal system. The system is designed to accept and treat domestic waste only. No other discharge is allowed, including condensate water from HVAC systems, pool filter backwash, etc. The Engineer has designed a TS-II textile-media filter with UV disinfection and subsurface drip irrigation system that dispenses treated effluent through drip irrigation using design criteria intended to comply with NC DEM Administrative Code 15A NCAC 2H.0200 and 15A NCAC 18A .1969, and NC DEH Onsite Section Innovative Waste Water System IWWS—2000-02R (Geoflow Sub-Surface Drip System)and OSI Advantex Recirculating Textile-Media Filter. (IWWS-2004-03-R4). Until plan acceptance and construction,the new drip field shall be maintained undisturbed. This shall include placement of signs, ribbons and barricades to avoid traffic,storage,or parking in the area. Encroachment by any utility or others is not permitted. The Contractor shall be prohibited from working while the site is wet. The Contractor shall contact the Engineer prior to commencement of work after rainfall.The Contractor shall consult with the Soil Scientist or Design Engineer prior to filling areas shown on plan. The Engineer, LSS and/or the Local Health Department have the right to suspend work until soil moisture conditions are favorable to optimal installation. The installer shall be knowledgeable of the type of system to be installed and shall have prior instruction on the installation of the various components of the system. Installer shall have the prior approval of the component manufacturers, (Orenco) and (Geoflow), and the approval of the Design Engineer. Geoflow & Orenco Field Representative and designer shall provide written acceptance of the system installation prior to issuance of operation permit. Scope of the Project:The scope of this project is to construct a system to collect the domestic waste from the new three-bedroom residence and route it to a new septic tank, an advanced treatment unit with UV disinfection. The outlet at the second compartment of the septic tank will have a slotted wastewater effluent filter manufactured by Orenco. Also, new Orenco tank risers will need to be installed over the inlet and outlet sides of the new septic tank. From the septic tank the effluent flows to a three-compartment module that contains the treatment unit, recirculation chamber, UV Filter and field dosing chamber, which will dose a textile-media pretreatment filter, which provides an aerobic environment for bacteria. A timer-controlled turbine pump will dose treated effluent to the drip field. The drip dosing system will have solenoid valves, spin clean filter, flow meter, air release valves and other apparatus and controls to allow the automatic dosing and maintenance of the system. The pump controls will have a 24-hour clock, programmable as determined by the operator. Controls shall also have elapsed run time clock and cycle counter for each pump. Unless alternately provided with the advanced Pretreatment System, the drip system control panel shall enable the daily, 7-day and 30-day monitoring requirements of Rule .1970 to be met, such as by data logging the field dosing times or field flow meter readings. The controls shall also have manual operating capabilities and alarms. The controls are to be located at a readily accessible location at the residence. 7093 Cove Creek Road Septic System Page 1 January 25,2021 Sherrill's Ford,Catawba County, NC Revised March 8,2022 DIRECTIONS TO THE PROPERTY: Highway 150 toward Denver. Go past Lineberger's Steakhouse and turn right on Mt. Pleasant Road at the General Store. Turn right on Trailwood Drive. Turn let on Cove Creek Drive, Lot is located on right side on road. Lot is waterfront. Lot is third from end of street. SECTION II - REGULATIONS In addition to compliance with laws, rules and regulations as required under the General Conditions of these Documents,the Contractor shall comply with the following specific regulations as applicable to the nature of work included under this Contract. Reference Material: (1) GEOFLOW SUBSURFACE DRIP SYSTEMS. Design and Installation Manual, October 2007, Geoflow, Inc. (2) LAWS AND RULES FOR GROUND ABSORPTION SEWAGE DISPOSAL SYSTEMS. SECTION .1900 OF THE N.C. Administrative Code: Title 10 Health Services; Environmental Health; Subchapter 10a; Sanitation. Published by N.C. Dept. of Human Resources; Amended effective January 10, 1997. (3) EPA 625/R-00/008 Design Manual-On-site Wastewater Treatment and Disposal System;February 2002; Chapter 7. (4) NC DEM Administrative Code : 15A NCAC 2H.0200, 15A NCAC T15A Section .1900 (5) OSI ADVANTEX Treatment System, Manual including performance information, OSI, Inc. (6) EPA: Technology Assessment of Intermittent Sand Filter, April 1985. (7) NC DEH-OSWPS—Innovative Approvals for Geoflow, Inc. & Orenco Systems, Inc. 7093 Cove Creek Road Septic System Page 2 January 25,2021 Sherrill's Ford,Catawba County, NC Revised March 8,2022 SECTION III - BASIS OF DESIGN DEVELOPMENT DESCRIPTION Location 7093 Cove Creek Road Sherrill's Ford, Catawba County, NC Water Supply Proposed Well Sewage Disposal On-Site Septic System with One TS-II Recirculating Textile Media Filter& Subsurface Drip Irrigation Application Rate 0.10 G/D/Sq. Ft. PROJECTED WASTEWATER FLOWS Proposed Use 3 Bedroom Residence Base Design Flow 360 G/D DESIGN BASIS-TREATMENT SYSTEM Septic Tank New 1,000-gal precast concrete with baffle Effluent Filter (1) Orenco Model FTPSO436-28-NC Pretreatment (1) Orenco Advantex AX20 RTUV Textile packed bed media filter module Pretreatment Control Panel VCOM-AX20B1/PTHTUVSA DESIGN BASIS -DRIP SYSTEM Design Flow 360 G/D Application Rate 0.10 G/D/SF Area 3,600 SF Minimum Supply Force Main Zone 1 - 125 LF 1" Dia. SCH 40 PVC Zone 2-175 LF 1" Dia. SCH 40 PVC Scour Return Main +/-175 LF 1" Dia. SCH 40 PVC Drip Lines Two zones with a minimum total of 1,800 LF Geoflow Wasteflow PC; Drip Line with constant flow rate pressure compensating emitters at 2' centers; Drip Lines at 2' centers Emitters Zone 1 —424 emitters @ 0.53 G/H = 3.74 G/M Zone 2—479 emitters @ 0.53 G/H =4.23 G/M Operating Pressure Range 10—60 PSI Drip Field Pump Orenco Systems, Inc. PF Series Pump Model PF1007-12 1 HP/230 V/1 Ph (10.2 G/M @ 171.3 Ft TDH) Drip Field Dosing Pump Controller VCOM-AX2061/PTHTUVSA programmable controller •Pump run timer •Pump run contacts •Elapsed pump run clock •Pump cycle counter •Zone valve contacts •Filter flush valve contacts •Alarm Features •Float input functions 7093 Cove Creek Road Septic System Page 3 January 25,2021 Sherrill's Ford,Catawba County,NC Revised March 8.2022 System Dosing Rate 3.74 G/M (Zone 1) 4.23 G/M (Zone 2) Dosing Time per Day 90.36 Minutes per Day Pump Run 12 times per day for 7.53 minutes per dose Flush Time Every 37th cycle, system to be flushed. Discharge Volume 6 runs/day x 7.53 min x 3.74 G/M = 169 G/D 6 runs/day x 7.53 min x 4.23 G/M = 191 G/D Headworks Geoflow Model WHWU-V-1 F-A-DDS Solenoid Valves (2) Geoflow Model SVLV-B-125 (Supply) (1) Geoflow Model SVLV-B-125 (Return) Filter 1.5" Spin Filter Geoflow Model AP4E-1.5F Vortex spin clean filter(w/automatic backwash cycle: 3 minutes, 15 seconds) Flow Meter 3/4"Geoflow Model FM-DDS Flow Meter with Flow Rate/Totalizer Air Vents Geoflow Model APVBK-1 7093 Cove Creek Road Septic System Page 4 January 25,2021 Sherrill's Ford,Catawba County, NC Revised March 8,2022 SECTION IV-COMPONENTS OF SYSTEM • New Three Bedroom residence collection system & septic system • New 1,000-gallon septic tank with slotted effluent filter and access ports • Pretreatment—One OSI Advantex Textile filter containing module with cover with recirculation and discharge chamber& UV Disinfection • Dual zone subsurface drip system (force mains, pump, pump control with audiovisual alarm, spin clean filter, meter, valves, shelter, drip lines and apparatus.) A. TREATMENT SYSTEM 1. General Requirements-The Contractor shall furnish, install,test,and place into service and warrant the complete system. The major system components including new septic tank, new slotted filter, new textile filter(pretreatment)module, headworks assembly,drip field and controls.Accessories shall be supplied by a single operating entity and shall be equal to that as specified. 2. Five sets of submittal documents and shop drawings for all mechanical equipment and major materials including piping, tanks, and all other accessories shall be furnished to the Engineer for approval. No equipment shall be installed prior to approval by the Engineer. 3. Precast Structures - General: This section shall apply to the septic tank as shown on the Contract Drawings. 4. Precast Tank Installation: Installer shall excavate for and install the precast concrete tank as per plans. Installer shall ensure that the tank remains level and true to grade after placement and filling with water. The precast tanks shall be tested for water tightness by an approved method such as 24-hour water tightness test with maximum allowable leakage not to exceed a maximum of 1/2-inch rise or fall in 24 hours or vacuum test, Contractor shall pull a vacuum down to 5 in/hg and hold for 10 minutes in the presence of the Health Department and/or the Engineer of Record. For the water test, the Contractor shall use clean,potable water free of any sediment for water testing. Either test method shall be run with risers/and inlet/outlet pipes in place. Testing shall begin after the water level in the tank has stabilized. Each tank shall be installed in the location and to the elevations shown on the plans. A 6"undercut shall be made to allow for washed stone leveling course for the tank to rest on. Once testing of the tank has been completed, the tanks shall be backfilled in lifts with well compacted, debris free earth to a level, which directs surface water away from the tanks. Tank access holes in the yard shall be installed and grouted watertight and the earth raked smooth for grassing. All tank lids shall be lockable or constructed to prevent easy removal. Tank access in traffic area shall be 24" cast iron manhole frame and lid. Tanks shall not be pumped during extremely wet conditions. 5. Septic Tank shall consist of a 1,000-gallon capacity, reinforced, precast concrete top seam tank with full baffle and shall have easy access to each chamber from ground level for checking and pumping.The first chamber of the septic tank shall consist 2/3 to 3/4 of the volume of the total tank and the baffle shall contain a horizontal opening across the tank at about midway its height. The PVC outlet tee shall extend one-fourth depth of liquid level and contain an effluent filter. Locate the septic tank at such height as to provide approximately 15"of cover soil over top of the tank or as necessary to receive gravity flow from the collection system. Provide access at each end of the tank. All metal installed in tank shall be stainless steel. 6. Slotted Effluent Filter: A new Orenco 4" Biotube effluent filter shall be installed in the PVC outlet tee of the new septic tank. The filter shall be manufactured by Orenco System Incorporated. Filter shall be 0S1 model#FTPSO436-28-NC. 7. Advantex Textile Bio-Filter: One textile-containing packed bed media filter module with cover shall be used, one module for four bedrooms or 480 gallons per module per day. The module shall be as described in manufacturer's literature attached herein. The module shall be pressure dosed with effluent filtered from the septic tank. Discharge from the module shall spill over via gravity to the drip field-dosing chamber of the Orenco AX-2ORTUV Module. Treatment Performance Standards (TS-II): Tertiary treatment without nitrogen reduction. The Advantex Textile packed bed media filter module shall be designed installed and operated to meet the following standards: 7093 Cove Creek Road Septic System Page 5 January 25,2021 Sherrill's Ford,Catawba County, NC Revised March 8,2022 1. Biochemical Oxygen Demand, 5-day(BOD5) < 15 mg/I 2. Total Suspended Solids(TSS) < 15 mg/I 3. Ammonium-nitrogen (NH4-N) < 10 mg/I 4. Fecal coliform bacteria densities< 10,000 colonies/100 mL Standards are arithmetic means, except fecal coliforms is a geometric mean. Advantex Unit and all associated appurtenances are available through AQWA at(888) 552-2792. 8. UV Disinfection:A UV disinfection unit model UV-125/3-P manufactured by Orenco shall be installed per the detail on plan sheet U-2 and in the specifications. The UV bulb, wiring and controls need to be installed at this time. Contractor shall ensure a 2/10 drop between invert in and out on the trap.Pipe shall be primed and glued prior to installation. Cleanouts shall extend a minimum of 6 inches above finished grade. Unit is available through AQWA at (888) 552-2792. 9. Float Switches: Water level float control switches shall be equal to Orenco System, Inc., mechanically activated switches,with cable of adequate length to terminate in the pump control panel. No splicing of wire allowed between switches and control box. Use mercury switched on control circuits and properly rated mechanical switches on power circuits. Conduit between the pump tank and he control panel shall be sealed to prevent sewer gas from entering the control panel. The dosing tanks shall have 4 float switches,a low-level"pump off'switch,a"pump enabling"float"timer override"and at"high water alarm" float. Floats shall be hung from a Orenco PVC float tree and handle within 12 inches of lid of riser. Float clamps or brackets shall be supplied by the manufacturer. The lower-level control or"pump-off'must be positioned above the pump, so that the pump remains submerged at all times. The upper-level control "pump-enabling" is positioned to pump a specified volume of effluent or assures that a full dose is available for timer-controlled dosing. The"high water alarm"control float is mounted at same level the "timer override" float control. (Note: Care must be taken to ensure that floats do not become fouled by other components in the tank such as the electric power cord). DRIP SYSTEM 1. Pipina and Valves: All supply and return manifold piping and fittings shall be Schedule 40 PVC conforming to ASTM D1785 as shown on plans and other pressure sewer pipe shall be Class 200 PVC (ASTM D2241) (SDR 21). All couplings and fittings shall be of polyvinyl chloride compounds (ASTM D1784, Type I, Grade I). 2. Wasteflow PC Dripline: The dripline shall consist of nominal sized 1/2" linear low density polyethylene tubing, with turbulent flow, drip emitters bonded to the inside wall. The tubing shall have an outside diameter(0.D_)of approximately 0.63 inches. The tubing shall consist of three layers;the inside layer shall be a bactericide protection; the middle layer shall be black, and the outside layer shall be purple striped for ease of identification as effluent water. The dripline shall have emitters spaced at 24"centers along the full length of the tubing. Tubing shall be installed at a minimum of 6 inches below ground surface.The emitters shall be pressure compensating to ensure equal dosing from pressure ranges of 10 to 60 PSI. The emitters shall be molded from virgin polyethylene with silicon rubber diaphragms. The emitter shall have a nominal discharge rate of 0.53 gallons per hour within the system design operating pressure. Each emitter shall be impregnated with Treflan to inhibit root intrusion and shall be guaranteed by the manufacturer to inhibit root intrusion for a period of ten (10) years. Wasteflow PC pressure compensating wasteflow dripline shall be Geoflow Model Number WFPC 16-4-24 as available through AQWA at(888) 552-2792. 3. Ball Valves: All thermoplastic ball valves shall be constructed from PVC Type I Cell Classification 12454 or CPVC Type IV Cell Classification 23447.All o-rings shall be Viton.All valves shall have Safe-T-Shear stem and double stop polypropylene or CPVC handle.All valve union nuts shall have Buttress threads for structural integrity. All seal carriers shall be Safe-T-Blocked.All valve components shall be replaceable for valve serviceability using rebuild kits. All valves shall be warranted against defects in material and workmanship for a period of one year. All valves shall be listed for potable water use by the National Sanitation Foundation(NSF).All 1/2"through 2"valves shall be pressure tested at 235 PSI and all 2-1/2" through 6"valves shall be pressure rated at 150 PSI for water at 73 degrees Fahrenheit,as manufactured by Spears Manufacturing Company or approved equal. 4. Swing Check Valves: Swing check valves shall be flow control PVC spring check valves with rubber flapper and PVC cap as manufactured by Geoflow Model CV-S-15 as supplied by AQWA at(888)552- 2792. 7093 Cove Creek Road Septic System Page 6 January 25,2021 Sherrill's Ford,Catawba County, NC Revised March 8,2022 5. Air Vacuum Relief Valve: The air vacuum relief valve provides instant and continuous vacuum relief and non-continuous air relief. Both the body and the removable dirt cover shall be constructed of molded plastic. The body and the dirt cover shall be connected with a 1-inch pipe thread. The ball shall be constructed of a low-density plastic and the internal seal shall be constructed of vinyl. The air vacuum relief valve shall seal at 5 PSI. Inlet size shall be 1-inch male pipe thread. The air vent shall be Geoflow Item Number APVBKV-1 with attached Schrader valve as supplied by AQWA at (888) 552-2792. 6. Drip System Dosing Pump: For the drip field, an Orenco PF Series Model PF100712 3/4 HP/230 V/1 Ph, capable of pumping 10.2 GPM @ 176.2 Ft. TDH for the drip irrigation. Details of pump installation are shown on the plan, Product shall be as supplied by AQWA at (888) 552-2792. 7. Drip System Controller shall be mounted 36' or more above grade and readily accessible. The unit shall be as manufactured by Orenco Systems, Inc. The panel model number shall be VCOM AXB2PTROUVSA. The Orenco Treatment System Control Panel is designed to control the irrigation pump, floats, and headworks as well as the dosing of the treatment unit. The control panel shall be provided factory pre-wired and tested in a NEMA 4X lockable fiberglass enclosure which shall contain the following Components shall include motor contactors and circuit breakers for use with 230V AC 1 Ph current using a max 1'/%HP motor. Programmable logic unit shall include time functions, motor function. valve controls and float input function. Unit shall include fused transformer for valves. An audiovisual alarm condition light and siren shall be mounted on the top of the panel and include a separately fused transformer. The unit shall have a hand-off-auto(H-O-A)switch. Product shall be as supplied by AQWA at (888) 552-2792. The controller shall be able to perform the following functions: receive input for floats and rain sensors, provide operator set timer-controlled pump operation. timer-controlled contacts for zone valves, scour valves and flush valves. The controller shall have an event counter, which shall count the number of moisture sensor overrides. The controller shall have an elapsed pump run clock and pump cycle counter. Unless alternately provided with the Advanced Pretreatment System,the drip system control panel shall enable the daily, 7-day and 30-day monitoring requirements of Rule .1970 to be met. such as by data logging the field dosing times or field flow meter readings. Floats, pump and control circuits, and the control panel shall meet the requirements of Rule .1952(c). Panel and control equipment shall include lightning protection. be protected from unauthorized access, and remain accessible at all times to the system operator. The activation of any alarm shall result in the activation of a dry and a 120 V powered alarm contacts. These contacts may be used to activate externally mounted alarm devices and telemetry systems. The alarm contacts will automatically reset when the R/O-N Switch for the activated alarm is placed in the reset/off position. Panel Operation: • High Level Alarm Float: When lifted this float will activate the audible alarm and the illuminated pushbutton. Note: This function can be combined with the Override Timer On & Off Function. •:• Override Timer&Off Float: When lifted this float will activate the normal timer function.This timer is capable of cycling at a faster rate to accommodate high flow conditions. This float being enabled will force the pump to dose at twice the operating cycle until the effluent is at normal levels in the pump tank again. :• Timer On & Off Float: When lifted this float will activate the normal timer function. This timer will begin with its 'off' cycle. •:• Redundant Off&Low-Level Alarm Float: When lowered this float will activate the audible alarm and illuminated pushbutton. This float will also deactivate the pump in both auto and manual. •:• Pump &Valve Operation: The pump dosing cycles will be controlled by the timer. During high flow conditions. the pump dosing cycles will be controlled by the override timer.Zone valves(if provided) will open as programmed and the pump comes on. The spin filter valve will open for 1 minute(field adjustable)to allow for drainage of the return line. After an operator defined number of cycles(field adjustable prime numbers), the field flush valve and the zone valve will open for one cycle. At the end of the dose,the field flush valve closes, and normal operation resumes.Since the flush cycle is to be set at an odd interval (prime number), the next flush cycle will fall on the opposite zone (if provided). Components Include: • Motor contractor & circuit breaker rated for use with 230VAC, 1 Ph and 1 Ph max :• Programmable logic unit :• Timer Functions • Valve control 7093 Cove Creek Road Septic System Page 7 January 25,2021 Sherrill's Ford,Catawba County. NC Revised March 8,2022 ❖ Transformer for the valves •:• Fuse for the transformer ❖ Top mounted audiovisual alarm (360 degree flashing red light and 90dB minimum) 8. Headworks: The system headworks shall contain the filter flow meter, the solenoid valves, gauges, fittings, and other apparatus as called for. The headworks shall be located as indicated on the plans. It shall be installed to allow easy access to all components for testing, servicing or replacement. The unit shall be enclosed in a suitable protective insulated shelter (i.e., Large meter box), secured from tampering. All valves located within this box shall be located a minimum of 18" below the box lid. Adequate freeze protection shall be provided. Headworks shall be Geoflow model WHWU-V-1 F-A-DDS. Product shall be as supplied by AQWA at(888) 552-2792. 9. Electric Solenoid Valve: All solenoid valves shall be Contamination Resistant Remote-Control Valves.All solenoid valves shall be electrically operated and shall be provided with a 24-volt AC solenoid coil. All valves shall be provided with an auxiliary manually operated internal bleed lever and flow control. Valves shall be globe type with 150 PSI pressure rating. Solenoid valves shall be provided with iron pipe sized female pipe thread end connections. All valves shall be treated for sewage effluent. Solenoid valve model shall be SVLV-B as manufactured by Geoflow, Inc. Electrical wiring to solenoid valves shall be type OF wire, UL listed. Product shall be as supplied by AQWA at(888) 552-2792. 10. Spin Clean Filter: The Y filter body shall be molded from glass reinforced black plastic with a 1.50"inch male pipe thread (MPT) inlet and outlet. The two-piece body shall be capable of being serviced by unscrewing and shall include an 0-ring seal. An additional 1,50"MPT outlet shall be capable of periodic flushing. The 150-mesh filter screen is all stainless, providing a 28.4 square inch filtration area. The outer support shell shall be woven stainless steel cloth, The inner and outer screens shall be soldered together. The screen collar shall be molded from vinyl. The 1.50-inch filter shall be Geoflow Model Number AP4E-1.5F, Product shall be as supplied by AQWA at(888) 552-2792. 11. Flow Meter:The Contractor shall install a turbine style 3/4"flow meter with rate/totalizer equal to Geoflow series with flow setter mount. Installed in headworks box. The flow meter model FM-DDS-050 is manufactured by Geoflow. Product shall be as supplied by AQWA at(888) 552-2792 SECTION V-SYSTEM INSTALLATION The field's perimeter shall be flagged by the General Contractor's Surveyor. The areas shall be barricaded with 4 ft high orange safety fence & signage per detail on plan sheet U-2 by contractor prior to any site disturbance to be protected from unauthorized vehicular traffic. Site shall be cleared of large and small diameter trees at the hub, other vegetation and debris by system installer only. If a tree is unable to be removed,the contractor shall raise the canopy on tree to a minimum of 8 feet above the existing ground surface so that sunlight can reach the ground surface. At time of installation,drip irrigation lines shall be installed on contour. Drip irrigation lines 6 inches below the existing ground surface with care to be certain that tubing is not kinked or deformed. After installation, the area shall be raked smooth to drain and to prepare for soil cap and stabilization. Drip tubing that cannot go through an obstacle such as a root shall be routed around or below the obstacle and not over and exposed on the ground surface. Contact Design Engineer if any questions or concerns. No work shall be performed on the drip field under wet conditions. "If it is too wet to plow," it is too wet to work on drip field. The Contractor shall avoid the smearing of the wetted surface and should this occur,work shall be suspended. After installation of the lines, the ground surface shall be shaped to allow good surface drainage to prevent ponding of surface water. All disturbed areas shall be raked smooth and stabilized according to specifications. Drip Irrigation Tubing Storage and Handling The drip irrigation tubing should be kept in the shade due to temperature sensitivity of the tubing and away from exposure to direct sunlight except during the actual installation process. Construction Sequence Rule of Thumb: "If soil is too wet to plow," it is too wet to install the system. 7093 Cove Creek Road Septic System Page 8 January 25,2021 Sherrill's Ford,Catawba County,NC Revised March 8.2022 1. Lay out drip irrigation field network area with stakes and flagging to ten feet (minimum) beyond the limits of the line. As soon as the absorption area is designated, it should be flagged, roped off and isolated from construction traffic. This barrier should be maintained until the Owner accepts the system. Refer to site plan for the size of absorption area and field locations. Observe all side yard, building, and other setback restrictions. 2, Clear site of any and all man-made debris, construction materials, etc. Dispose of legally. Cut all trees in the area of the nitrification field flush with the ground. Do not remove any stumps with any earth moving equipment. Stumps shall be ground up with minimal distribution to surrounding soil. 3. Prior to actually beginning construction of the system, verify invert elevations of all tanks, carefully locate,lay out and identify disposal site, manifolds and the drip piping networks, using a tripod mounted engineer's leveling instrument to accurately establish each lateral along a level contour.(A 2'minimum drip line separation must be maintained centerline to centerline.) 4. Install drip lines, piping,valves,and headworks. Ensure good bedding and cover and uniform slope as specified. All valve boxes shall be flush or slightly above the ground and clear of debris. Install washed stone in bottom to cover exposed soil. 5. Install new septic tank, risers and lids.Install new Orenco filter to allow proper operation. Extend handle to within 12 inches of tank lid, The recirculation and dosing chamber will each contain a pump and a pump enabling float switch,a pump disabling float switch and a high-water alarm float switch. The drip- dosing chamber will be set at elevation to receive gravity from the filter. All components shall be checked, and proper flow verified. 6. Carefully backfill treatment module and trenches to finish grade with clean debris free earth(no stone). 7. Install pumps, filters, fittings and floats. B. Install control system and wire per NC Building Code and NEC. Contractor shall verify available electrical power before ordering components. Provide and connect to properly sized and number of breakers in the main panel board. 9. Seed all disturbed areas and follow seeding specifications. Final Landscaping:After the system is installed,the following should be checked to ensure that the system will not be overloaded with excess rainwater and run-off. (a) The drip field is shared to shed rainwater and is free of low area. (b) Curtain drains, grassy swales or ditches for diverting ground and surface water are properly installed. (c) Gutter and downspout drains are directed away from the system. Any problems should be corrected before approving the system. Finally, drip field shall be stabilized, and all other disturbed areas shall be planted with grass according to specifications. Seeding: After completion of the drip fields, the site shall be stabilized with tall fescue grass. This should be seeded at the rate of 25 lbs. per acre each for a total of 50 lbs. per acre. Before seeding, lime should be added at the rate of 1.5 tons per acre. Fertilizer should be added at the rate of 100 units of Nitrogen, 120 lbs. of P205 and 120 lbs. of K20. Both the lime and fertilizer should be lightly incorporated into the soil before adding seed. After seeding, the area should be mulched until stand is established. Due to the erosion potential of this soil, this is an important part of the system. SECTION VI -OPERATING CHECKS AND ADJUSTMENTS (START-UP) The system shall consist of one new 1,000-gallon septic tank with new slotted filter and access risers and lids, new Orenco Advantex AX-20 RTUV textile containing module with cover with recirculation pump and dosing chamber, UV Filter and a single zone drip field with pump, headworks, controls and other apparatus. All components of the system shall be checked and taken through a complete test cycle in the presence of the Owner's Engineer and to his satisfaction. If the test fails, adjustments shall be made, and the test repeated until the system is determined to operate properly. Septic Tank: Check effluent level and slotted filter. Verify that the filter can be removed for service and handle is within 12"from top of riser. Textile Filter: Using manufacturer's instruction, become familiar with filter components and operation. Drip System Dosing Tank Pump Chamber-Sequence of Operation: Effluent fills chamber in AX-2ORTUV to level that will activate the"Pump Enabling"float. Pump can now operate. The control panel will be set to 7093 Cove Creek Road Septic System Page 9 January 25,2021 Sherrill's Ford,Catawba County.NC Revised March B,2022 allow the prescribed pump cycles per day based on customer setting of the programmable timer. When a pump is called for service,and the level in the dosing tank permits,the zone valve(if provided)and filter flush valve will open.After an adjustable time,the filter flush valve will close, and the system will continue to dose the active drip zone for the operator selectable time. If the timer override float is activated, the pump will be allowed to dose for 7.55 minutes and disable for one hour. Then the pump will activate again until the water level in thank reaches normal again. Dosing Cycle: If the system is equipped with multiple zones.all zones are dosed individually on an alternating basis so that each field is dosed once every other dosing cycle. The appropriate zone valve opens,the pump doses the field for 7.55 minutes and then the zone valve closes, and the pump stops. After an operator defined number of cycles (field adjustable prime numbers), the field flush valve and one zone valve will open for one cycle. At the end of the dose,the pump stops and the field flush and zone valves close. Since the flush cycle is to be set at an odd interval (prime number),the next flush cycle will fall on the opposite zone. The pump shall operate delivering a timer controlled predetermined dose to the designated drip field. The pump shall also shut off when the low water level "pump off' switch is activated. If the "high water alarm" float switch is activated, the controller shall activate audible and flashing alarm systems. Once energized, the flashing and audible alarm unit must be shut-off manually.After installation, each field shall be independently pressurized, and the function and operating pressure checked to verify compliance with the specifications and required wetted area shown on the Plans. System pressure is to be obtained at the Schrader Valves located at the ends of the manifolds as shown on the plans. The pressure and flow reading shall be recorded for comparison with future readings. The owner/operator cannot tell if the system is operating properly unless he has this info. 7093 Cove Creek Road Septic System Page 10 January 25.2021 Sherrill's Ford,Catawba County.NC Revised March 8,2022 SEEDING SPECIFICATIONS SLOPES 3:1 or FLATTER 1.Apply agricultural lime at the rate of 90 lb./1000 SF. 2.Apply 10-10-10 commercial fertilizers at the rate of 20 lb./1000 SF, 3.Seed in accordance with the following schedule and application rate: DATE TYPE PLANTING RATE Aug 15-Nov 1 Tall Fescue 200 lb./Ac or 7 LB/1000 SF Nov 1 -Mar 1" Tall Fescue And 200 lb./Ac or 7 LB/1000 SF Abruzzi Rye 25 lb./Ac or 2 LB/1000 SF Mar 1 -Apr 15 Tall Fescue 200 lb./Ac or 7 LB/1000 SF Apr 15 -Jul 30 Hulled Common or Bermuda 30 LB/Ac or 1 LB/1000 SF Jul 15 -Aug 15 Tall Fescue And 200 LB/Ac or 7 LB/1000 SF Brown Millet Or 35 LB/Ac or 3 LB/1000 SF Sorghum-Sudan Hybrids 30 LB/Ac or 3 LB/1000 SF 4.Mulch with straw applied at the rate of 75-100 LB/1000 SF, * Heavily mulched during January-March period. SLOPES GREATER THAN 3:1 TO 2:1 1.Apply agricultural lime at the rate of 90 LB/1000 SF. 2.Apply 10-10-10 commercial fertilizers at the rate of 20 LB/1000 SF. 3.Seed in accordance with the following schedule and application rate. DATE TYPE PLANTING RATE Mar 1 -Jun 1 Sericea Lespediza (scarified)& 50 LB/Ac or 11 LB/1000 SF Mar-Apr Add Tall Fescue or 150 LB/Ac or 32 LB/1000 SF Mar-Jun Add Weeping Lovegrass 5 LB/Ac or 1 LB/1000 SF Jun-Sep 1** Tall Fescue and 60 LB/Ac or 12 LB/1000 SF Brown Top Millet 35 LB/Ac or 3 LB/1000 SF Sorghum Sudan Hybrids 30 LB/Ac or 1 LB/1000 SF Sep- Mar 1 Sericea Lespediza 70 LB/Ac or 14 LB/1000 SF (unhulled-unscarified) Tall Fescue 150 LB/Ac or 32 LB/1000 SF Millet or Sudan 20 LB/Ac or 1 LB/1000 SF **Temporary- Reseed September 1 at recommended rates. 4,Mulch with 3"straw applied at the rate of 50-90 LB/1000 SF. 7093 Cove Creek Road Septic System Page 11 January 25,2021 Sherrill's Ford,Catawba County.NC Revised March 8,2022 I1&.n1Aw.•201.2010n.a$wxw»1)1C_Cow ao8.1.4r Q4.101i]1.4,4....2.22 a n 51 Ni.0$4,1 ' 7 i j I E i I I i 111 til a.I Ili i pimp apt`u hull r' + t 1 1I l f 11 IR I ii it I. i' 20 it"E{! e.; I i l 1 ,F11t ii� /t f6 i 4 �� � ' 1 m 9 i, iFF 8r I t . III EF'PI iig 1 11Id i 91 4 1` !6 1 I FF 4! I 1 11 z f I n 215, G D OKI t ___ n \ z X' / /_ \ P boo `-='l'F erg ^P •�+ / \ � g a I \\\. i \ 7:14‘ RI \, \-brt -..* ,S, 1 a''''Kir i.2 o g '. .. K, ti I i J ..,,,\ . . 40.k‹,* i . / 2 P!, , / i \.\\, ..- A ' ) ______ q,-.71,, / . ! . / % /# / a \\I.: ! / i R526 - -- . 2, 7, x‘R rrd:' /'. 1 #1/1/// 1 1 N 2 ^ YJ +' g ?,1 \. — -e \rA LI -; ,:.,,.+0.t . „ ¢z -h \ c .A ! 1 le° a • $z 1 l\ z et D ii �1 I ,� \ ^. 1 F t4 % n j ! i` • E� Z � �; � \ c+. • p �l4Q Z yip lily d .I 'agil gip m g i c 5 d C1t Q :' i z J" n . .II Ili! yE'A 6:fE 1pij6 i! 1 `� it 11 4' ,:sii i . . • . 3 a ��silji I ee:: II I r' ;Fig v.t4 .a..wco.�n,> i i;i? _ ;s I j,ig °'dw`" SUBSURFACE DRIP SEPTIC SYSTEM SITE PLAN PIEDMONT DESIGN [ a 3 BEDROOM RESIDF,[YCF. TERRY AND -7 HOWELL h, ES m 1 gsll�" a 8026 LEOrNNCE CT N H— a g _ i qa.� 7093 COVE CREEK ROAD CNARI 0' IS 7HOW !N ;,LL B NWT 8 i FY 1 SHERHILIS FORD,CATAIBA COUNTY, NORM CAIWUNA az,_aoz-�s7s ..__-rrl-r•NrIMO.4•11.•0-0.1.0440.a.MT.r— 1 11 ii e I ��a _ • - ill i li Ti-- iji ' I ice- ' ill! ce, 1 ++ 1 IL I 'i ______ : il 14 '' tn tilt i 4 _ miii , L of _ _ ' I S 1� di iH 1lI° a 1 , ! 1 jL' I t (1 /1 h i i ti Hi t li II'� i _ II 111111 1 i 11 IE t >� 1 " '1 iil� ii i l+ ', I. i1 1 ;�li ! ! li i 1� l it 1 8 t i fill © 1 ` 1 cir.. iiIts I II : qail - r � 1 _ Al, 0.11 1 lir 1 41 4 1 ll II 111 t ( i I 0 , 1 4 ) , g ol!i _in '! lift' ' mil ' imp {-MI I • 1 ' l8 A . ii q ily - row, iiiii i O ■li • �' !�t `� i -- Lowti ■ f ■ }} 1 `� �i ;� � `PP � '� f ii l 1■� i lj • 5 lei ilil?Mil*b. ilia #� 111k ii1a 11 lidi ai i ;pi ■ 11•Eif I ai / piit till hii flik rfi l 1. lIt It II iiI! liI! I t II! ! I!1!! r. I, i i 1 SUBSURFACE DRIP SKP11C SY31H11 DMUS """"" PIEDMONT DESIGN —r �■ � 3 BEDROOM RESIDENCE T AND USA HO*E11 h\ ^„ �� h note uoMnc n o .�...r.n, `�i'* r09J COVE CREEK RUAU cH481.07C. MC 287N s 1 ! SIM MS 10®.CLTU CR M.RORMB CAROUNA 321-.or-w3 .-.--.ar1�+,r .— CALCULATIONS FOR A GROUND ABSORPTION SEWAGE DISPOSAL SYSTEM USING SEPTIC TANK, TS-II ADVANCED TREATMENT, AND A LOW PRESSURE SUBSURFACE DRIP DISPOSAL SYSTEM TO SERVE A NEW 3 BEDROOM RESIDENCE 7093 COVE CREEK ROAD SHERRILL'S FORD, CATAWBA COUNTY, NORTH CAROLINA January 26, 2021 Prepared for: Terry and Lisa Howell 8026 Leonine Ct. Charlotte, NC 28269 Phone: (321) 402-7575 \� wlilsirri Prepared by: \\������` CARq ,"i'�. PIEDMONT DESIGN ASSOCIATES, P.A. 125 East Plaza Drive, Suite 101 Mooresville, NC 28115 j/ 27 Phone: 704-664-7888 f Fax: 704-664-1778 nicEst NCBELS No.: C-1007 4,.. _ .,; OPT q . Project: Howell 3 Bedroom Drip Original Date: January 26,2021 Project#: 2020-12-10-EC Revised Date: January 26,2021 DESIGN FLOW 350 gpd SEPTIC TANK: Use 1,000 Gallon Septic Tank Use Orenco#FTPS 0436-28NC Series Biotube Effluent Filter -See Filter Cut Sheet for Exact Specifications TANK ANTIFLOATATION 1,00C Gallon Septic Tank Based on Shoal Precast Company Outer Length 9.00 FT Inner Length 8.50 FT Outer Width 4.83 Fl Inner Width 4.33 F I Outer Height 5.63 FT Inner Height 5.04 FT Wt of Water Displaced[ 15,268.50 1LBS Outer Length x Outer Width x Outer Length s 62.4 Lb/CF(Wt of Water) Wt of Tank 4,306.50 LBS Top&Bottom Outer Length x Outer Width x 150 Lb/CF x 2(Top&Bottom)x Slab Thickness 1,827.60 LBS Ends Inner Width x Inner Height x 150 Lb/CF x 2(Ends)x Wall Thickness 3,214.06 LBS Sides Outer Height x Outer Length x 150 Lb/CF x 2(Sides)x Wall Thickness 1,027.81 LBS Baffle Inner Width x(Inner Height-3 Inches)x 150 Lb/CF x x Wall Thickness 10,375.98 LBS Total Tank Wt. Sum Above four Wt of Overburden 10,345.34 LBS 15 In.Cover Outer Length x Outer Width x 120 Lb/CF(Saturated Soil Wt)x Soil Thickness Total 20,721.31 LBS Sum of Total Tank Wt.&Soil Overburden WATER[ 15,268.50 ] < I 20,721,31 TANK "Buoyancy Calculations Account for Fluid in Tank,Do Not Pump Wher, Ground is Saturated or During Extremely Wet Conditions. 1 of 1 1/26/2021 Project:Howell 3 Bedroom Drip Original Date: January 26,2021 Project#:2020-12-10-EC Revised Date: January 26,2021 Geoflow Subsurface Dripline Disposal field Calculation Please fill in the shaded area: Notes.' Residences per field 1 residence Gallons per day(gpd) 360 gpd Hydraulic loading rate(LTAR) 0.1 gal/ft2-day Determined by Soil Scientist or Local Health Dept. Area required 3600 square ft Area=gpd/LTAR Wasteflow PC or Classic PC dripline Emitter spacing 2 ft. Normally 2 ft.except for heavy clay or septic effluent Dripline Spacing 2 ft. Normally 2 ft.except for heavy clay or septic effluent Pressure 20 psi Normally 20psi. Head required at dripfleld 46.20 ft.of head Multiply Req'd Pressure by 2.31 Emitter flow rate 0.53 gph At 20psi: PC flow rate is 0.53 or 1.02gph,Classic flow rate is 1.30 gph. At 15ps1: PC flow rate is 0.53 or 1.02gph, Classic flow rate is 1.13 gph Length of Wasteflow dripline 1800 ft Area/spacing Number of emitters reqired 900 emitters Length of Wasteflow/emitter spacing Total Flow rate(gph) 477.00 gph Flow rate x number of emitters Total Flow rate(gpm) 7.95 gpm Total flow rate/60 minutes Flow per square ft. per hour 0.13, gph/sq ft. Total flow rate/area Flow per square ft. per day 0.10, gpd/sq ft. Flow per day/area Flow per emitter per day 0.40 gpd/emitter Flow per day/ number of emitters Water depth applied per day 0.16 inches/day (Daily flow/area)x(231cu in/gal)/ (1441n/ft2) McKnight 4 Bedroom Drip Denver,Lincoln County,North Carolina 1 of 1 1/26/202i @Qo7aoW gal BSUUFA¢Q mop, Updated Mar 1015 FIELD FLOW Job Descnption: 7093 Cove Creek Rd,She/rills Ford,Catawba Co.,NC Contact: Terry and Lisa Howell Prepared by: PDAPA.David DeCaron Data: 1/26/2021 Please fill in the shaded areas and dro.down menus: Total field _ Total Quantity of effluent to be disposed per day 360 gallons/day note Hydraulic loading rate 0.1 gallons/sq.ft.I de note • Minimum Dispersal Field Area 3.600 square ft. note Total Dispersal Field Area 3,800 square ft. note Flow per zone Number of Zones 2zone(s) note Dispersal area per zone 1,800 square ft. note Choose line spacing between WASTEFLOW lines 2 ft. note Choose emitter spacing between WASTEFLOW eml 2 ft. note Total linear ft.per zone(minimum required) 900 ft.per zone note Total number of emitters per zone 450 emitters per zone note —Select Wasteflow dripline(16mm) Wasteflow PC•1/2gph dnpline note W asteflow Classic Wasteflow PC-1/2gph Wasteflow PC-1 gph Pressure at the beginning of the dnpfleld 50 psi Feet of Head at the beginning of the dripfeld 115.5 ft. What is the flow rate per emitter in gph? 0.53 gph _ Dose flow per zone 3.98 gpm Nola A taw States or Counties require additional flow for flushing.Please check your local regulations. Flush velocity calculation below Is for PC drlpllne.Classic drlpllne requires less flaw Io flush than PC. Phase rarer to Osoflow's Spreadsheet'Design Flow and Flush Curves"at www.geollow.com or call a00829.33e3. d required,choose flush velocity 1.2 ft/sec i l• How many lines of WASTEFLOW per zone? 7 lines Fill in the actual length of longest dripline lateral 150 fl, Flush flow required at the end of each driplirle 0.89 _Total Flow required to achieve flushing velocity 6.22 gem .... Total Flow per zone-worst case scenario 10.19 gpm noie Select Filters and zone valves Select Filter Type Vortex Screen Filter note Recommended Filter(item no.) AP4E-1.5F Screen Filter 0-205irote Select Zone Valve Type Electric Solenoid- note Recommended Zone Valve(item no.) SVLVB-1001-in.Solenoid valet note Dosing Number of doses per day/zone: B doses note Timer ON.Pump run time per dose/zone: 7.33 mins:secs 7 55 Timer OFF. Pump off time between doses 3:52 hra:mina 3.87 Per Zone-Pump run time per day/zone: 0:45 hrs:mina 0 75 All Zones-Number of doses per day/all zones 12 doses/day Allow time for field to pressurize 0:00:30 hra:mine:secs 0.500 Filler flush timer 0:00:20bra:mins:secs 0.:23 not' Drain timer 0:05:00 hrs:mins:secs 5.000 nolo Field flush timer 0:01:00 hrs:rnins:secs 1.000 note Field flush counter 37 cycles note Time required to complete all functions per day 2:52 hrs:rnins 2.8/6 i 0 Dose volume per zone 30 gallons per dose vole W Asielbw Design Spreadsheet V.2014G 1/62021 @ ® aoW JB,SUR4FA03 MOP PUMP SIZING Job Description: 7093 Cove Creek Rd,Sherrils Ford,Catawba Co.,NC Contact: T�and Lisa Howell Prepared by. PDAPA,David DeCaron Dale: '1/8/2021 Please fill in the shaded areas and dro.down menus: Pressure losses may be grossly overstated,particularly if designing with WASTEFLOW Cli The letters on the diagram(right)match the letters in section 2 below. Section 1 -Summary from Worksheet 1 Flow required to dose field 3.98 gpm Flaw required to flush field 10.19 gpm Flow required to dose&flush field 10,19 gpm Filter AP4E•1.5F No.of Zones 2 zones Zone valve SVLVB•100 Dripline Wastetow PC-1/2gph Dripline longest lateral 150.00 ft. Section 2 A. Flush line-Losses through return line Select Pipe from dropdown menu _ PVC schedule-40 Select Flush Line Diameter 1'inch Length of return line 175 ft. Equivalent length of fittings 35 R. Elevation change.(it downhill enter 0) 10 ft. Pressure loss in 100 ft of pipe 6.52 ft. 2.62 psi Total pressure loss from end of dripline to return reef 29.7 ft. 12.85 psi B. Dripline•Losses through Wasteflow dripline Length of longest dripline lateral 150 ft, Minimum dosing pressure required at end of drlpllne 29.69 ft. 12.85 psi Loss through drlpline during flushing 1.13 ft. (1.49 psi Total minimum required dripline pressure 30.82 ft. 13.34 psi A+6- Minimum Pressure required at beginning of dripfleld CALCULATED pressure required at beginning of dri 60.52 ft. 2620 pal SPECIFIED pressure at beginning of dripfield(from t 115.5 ft. 50.00 psi Great!SPECIFIED Pressure is greater than CALCULATED Pressure requirement.Go to next step C. Drip components-Losses through headworks Fitter 9.0 ft. 3.90 psi Zone valve pressure loss(not In diagram) 6.93 ft. 3.00 psi Flow meter pressure loss(not in diagram) 4.04 ft. 1.75 psi Other pressure losses 5,00 ft. 2.16 psi Total loss through drip components 24.98 ft. 10.81 psi D. Supply line-Minimum Pressure head required to get from pump tank to top of dripfleld Select Pipe from dropdown menu PVC schedule 40 Select Supply line diameter 1' inch Length of supply line 175 ft. Equivalent length of fittings 35 R. Height from pump to tank outlet 6 R. Elevation change.(if downhill enter 0) 16 ft. Pressure loss/gain in 100 ft.of pipe 6.52 ft. 2.82 psi Total gain or loss from pump to field 35.7 ff. 15.45 psi Total dynamic Mod 176.2 ft. 76.26 psi Pump capacity• -Field Flush Flow 10.2 gpm 76.26 psi -Field Dose Flow 4.0 gpm -Filter Flush Flow 10.2 gpm 10.19 psi Pwtlp.li ed5l Niunh4.r Orenco PF 1007.12 230V-314 HP-1 Phase * Now: Pump capacity flow assumes lbw in Dripline dots not change during a dose cycle. With Wastetluw Classic this ,....s,„F rytt 7g tun s otbw's Flushingworkshett. 1r2612021 • catawba county public health The North Carolina Department of Health and Human Services,Division of Public Health,issued a position statement on July 24,2018 pursuant to Session Law 2018-114 (HB374)Sections 9 through 12 regarding the Implementation of Session Law Provisions. The completion of this form is necessary to conform with the requirements. The NC Licensed Soil Scientist("LSS")entity through his/her signature below makes the following statements: 1. The LSS Evaluation attached to this application is to be used to produce design and construction features for permitting in accordance with SL 2018-114 Section 11.(c). 2. The LSS Evaluation is being submitted pursuant to and meets the requirements of 5L 2018-114 Section 11.(c). 3. The L55 maintains an errors and omissions liability insurance policy issued by an insurer,as required by North Carolina State Law,in an amount commensurate with the risk of performing the work referenced herein. Property Address: 70 t3 �'��� Gx c-c-� �u+t CI SO/S Signed this Jst dzy of Alode-ti-sv 20 fr E4C •4)-1 i..s4err, C 4'�r !Qi r .. 51 By: A-1.4.4_,. . SE 4 -' " cr . � l v Y • Printed Name: t+'-'G-rtnt+crf ` �w.,.s•r North Carolina Licensed So!!!Scientist _ 1218 Mailing Address: "" OffceNumber: rt5t ' `!3q- 5avl Cell Number: 1O i 734 ilooc _ Email address: c.-Gr'c-tr- e 6 n nit, Acknowledged by Owner/Owner's Lega Representative(Circle correct one.) If signed by owner's iegai representative,the appropriate legal dacumentatlon must be attached hereto. BY: Printed Name: Tr v r /4&w e 11 Mailing Address: ,s-OeN ,Jc - (c 5ioofo Ln.- Cya 2F26, Office Number: Cell Number: 3 o f -Yo a-7,s'75 Ernzl!address: t-r r-y h o,„.a 11 w S t 147c,.;f. co— p catawbacountync.gov Environmental Health (olowba County Government (enter 25 Government Drive j PO Box 389 I Newton NC 28658 1828.465.8270 MAKING. LIVING. BETTER. Scanned with CamScanner 1r SOIL 1 FORESTRY SERVICES OF THE CAROLINAS, PA www.soilandforestrvservices.com November 25, 2020 S&FS Job#20-1181 Terry Howell Via email: terryhowellus@gmail.com RE: Soil/Site Evaluation at 7093 Cove Creek-Sherrills Ford, NC Mr. Howell: Soil & Forestry Services of the Carolinas (S&FS) has performed a preliminary soil/site evaluation on approximately .6 acres located at 7093 Cove Creek Road in Sherrills Ford. The purpose of our work was to identify soil areas with potential to support a subsurface wastewater disposal system for a new home. Site Conditions The evaluated parcel is listed as Tax Parcel #369704935952 with the Catawba County Tax Office. No improvements occurred on the property at the time of our evaluation. The lot was forested and supported a slope that ranged from approximately 18% to 25%. Topography over most of the property was suitable for supporting septic systems. The 50ft setback from the 760' contour was staked at the time of our field visit. Methodology Our soil evaluation was performed via excavation of pits. Soil morphological conditions including color, texture, structure, etc. were reviewed in the field with pit locations recorded via GPS technology. Soil suitability was determined by referencing 15A NCAC 18A.1900 "Laws and Rules for Sewage Treatment and Disposal Systems". Findings Soils on the lot formed from acid crystalline rock. These rock types typically weather to form soils with red clay subsoils suitable for supporting septic systems. Usable soil was identified during our evaluation. However, the depth of suitable conditions varied. In all, 9 pits were evaluated. Pit#4, central to lot, contained only 17 inches to rock at greater than 50%volume of the pit. The remaining pits contained usable soil depths between 24 inches and 58 inches. The effective usable soil depth is further reduced based on slope. At 25%slope a correction factor of 9 inches is needed for a 3ft-wide trench. Based on our findings the lot has potential to 1 support a subsurface drip irrigation system. The soil areas/pits with potential to support subsurface drip irrigation type systems are hatched on the attached sketch map. Septic System Requirements Septic system leach fields are sized based on the number of bedrooms proposed as well as the Long-Term Acceptance Rate (LIAR). The LIAR represents the rate effluent can be disposed onto the soil based on soil texture, structure, etc. An area designated for the leach field must meet setback requirements to property lines (10'), wells (50'/100'), streams (50'), etc. For reference, a 3-bedroom home typically requires 3600sf or more of usable soil for supporting a drip irrigation septic system (no repair). The larger usable soil area on the attached sketch map is approximately 5800sf in size. Please note the necessary soil area must be clear of the house and any setbacks (well, property line, etc.). Recommendations This report reflects the findings of S&FS, PA. An individual permit will be required from the Catawba County Health Department prior to building unless an Engineer Option Permit is obtained. We recommend speaking with a professional engineer (PE) qualified to design a drip irrigation system regarding our findings. This report reflects the general findings of S&FS for the property in question at the time of our evaluation. Sincerely, Wendell Overby, RF LSS SC Attachments g i 2 Sheet 1 of 1 PROPERTY ID#:369704935952 COUNTY: Catawba SOIL/SITE EVALUATION for ON-SITE WASTEWATER SYSTEM (Complete all fields in full) OWNER: Terry Howell _ APPLICATION DATE ADDRESS: DATE EVALUATED:11/24/20&1/22/21 PROPOSED FACILITY: New house PROPOSED DESIGN FLOW(.1949): 360 PROPERTY SIZE: .6 LOCATION OF SITE:7093 Cove Creek PROPERTY RECORDED:<1983 WATER SUPPLY: xC Private I Public x-Well 1 Spring ❑Other EVALUATION METHOD: ❑Auer Boring x❑Pit 1 Cut TYPE OF WASTEWATER: x❑Sewage Industrial Process ^l Mixed • • • • P o SOIL MORPHOLOGY OTHER F (.1941) PROFILE FACTORS I .1940 E LANDSCAPE HORIZON POSITION/ DEPTH 1942 PROFILE SLOPE% (IN.) .1941 .1941 SOIL .1943 .1956 .1944 CLASS STRUCTURE/ CONSISTENCE/ WETNESS! SOIL SAPR RESTR <AR TEXTURE MINERALOGY COLOR DEPTH 0 HORIZ CLASS L/25% 0-4 DB L WFGr Fr SS SP N/A 46 PS P- 4-14 BCLWFS Fr SS SP 1 14 19 R C WFA/S Fr S SP 39-46 R CL WFS Fr SS SP 46-58 VAR SL MASS Fr SS SP L/24% 0-3 DBLWFGr Fr SS SP N/A 40 UN II", 3-12 B CL WFS Fr SS SP 7 12-40 R C WFA/S Fr S SP 40+ ROCK/SAP L. 24% 0-4 DB L W I'Gr 1 r SS SP N:1 _ L:1\ P', I ' 4-27 R C WFS Fr S SP 3 - ROCK/SAP I. 24'., I"' .ti y�SO • • rr r10c.'.4 DESCRIPTION INITIAL SYSTEM REPAIR SYSTEM I.i. — • 11{i } OTHER FACTORS(.1946): �Q•1 ` � SITE CLASSIFICATION(.1948):_PS % ' ,''.'I' 1' ' t ' Available Space(_1945) 3600sf ` �; EVALUATED BY: ''• 'r System Type(s) drip _ exempt _ OTHER(S)PRESENT:Joe Thompson c ce .12ta , Site LTAR .1 `'�� `NC COMMENTS: Updated February 2014 SOIL/SITE EVALUATION Sheet 2 of 2 (Continuation Sheet-Complete all field in folli PROPERTY ID#:369704935952_ DATE OF EVALUATION: I 1/24/20&1/22/21 COUNTY:Catawba . . . . a R SOIL MORPHOLOGY OTHER 0 F (.1941) PROFILE FACTORS .1940 F LANDSCAPE HORIZ .1942 POSITION/ ON .1941 .1941 SOIL .1943 .1956 .1944 PROFILE r. SLOPE% STRUCTURE/ CONSISTENCE/ WETNESS/ SOIL SAPRO RESTR CLASS DEPTH TEXTURE MINERALOGY COLOR DEPTH CLASS HORIZ <AR (IN.) L/ 18% 0-4 B L WFGr Fr SS SP N/A 27 UN PS - 4-10 R CL WFS Fr SS SP I-.IS 5 10-27 R C WMS Fr SS SP 27-48 ROCK/SAP L/ 18% ()_-• DB L WFGr Fr SS SP 2 Chroma 24 IN PS -24 R C WMS Fr S SP CO.,24 l-.I S 6 24-4X YB CL SAP Fi SS SP L/25% 0-8 B L WFGr Fr SS SP N/A 32 PS PS 8-32 R C WFA/S Fr S SP 3 7 32-48 VAR 1. MASS Fr SS SP L/20% 0-5 B L WFGr Fr SS SP N \ 40 PS !'S 8 5-15 YB CL WFS Fr SS SP 15-40 R C WFS/A Fr S SP 40-55 VAR L MASS Fr SS SP L/20% 0-8 B L WFGr Fr SS SP N/A UN 1'X I 8-27 R C WFS/A Fr S SP 9 27-36 ROCK/SAP COMMENTS: Updated February 2014 SOIL/SITE EVALUATION Sheet 3 of 3 (Continuation Sheet-Complete all field in full) PROPERTY ID#:369704935952 DATE OF EVALUATION:_11/24/20&1/22/21 COUNTY:Catawba . . P R SOIL MORPHOLOGY OTHER 0 F (.1941) PROFILE FACTORS I .1940 L LANDSCAPE HORIZ .1942 POSITION/ .1941 .1941 SOIL .1943 .1956 .1944 PROFILE # SLOPE% ON STRUCTURE/ CONSISTENCE/ WETNESS/ SOIL SAPRO RESTR CLASS DEPTH TEXTURE MINERALOGY COLOR DEPTH CLASS HORIZ <AR (IN L/25% 0-5 DB CL WFGr Fr SS SP N/A 48 N/A PS 5-26 R C WFA/S Fr SS SP .3 1 0 26-48 R CL WFS Fr SS SP f/c sap — L/25% 0-6 DB CL WFGr Fr SS SP N/A 48 N/A PS 6-264 R C WMA/S Fr S SP .3 1 26-48 R CL WFS Fr SS SP c sap 1 L/25% 0-6 B CL WFGr Fr SS SP 2 chroma 48 N/A PS 6-27 R C WFA/S Fi SS SP @ 27" l 1 27-48 YR CL WFS/M Fi SS P 2 Li 20% 0-5 DB CL WFGr Fr SS SP N/A 40 PS 20% PS Vol of .275 5-26 R C WMA/S Fr SS SP 1 Pit in 3 26-48 R CL WFS Fr SS SP f/c sap Rock starts@ 26" COMMENTS: Updated February 2014 * , m o, -0 g...r. .. , _..., •:. . \ Id , CD \ . ---I I dp0. (1) D . •, ..s.. o >. o_B v) „-. -o -, „ o . : cT / ., -o -5-,t.-.-= .. ' ' ,<ZIP o --, CD 0 0 -•-. CI II tz. CI / -4.. 7' An : t ..,N. 0 x -1 -•-1 — 0 cn 1-‘, .'e .i'i.. ii. A007 D p=1: .* .--o- - m--_. /////' 0 : :ii: s cD 0 ci, cp CO PF:h. Ci] i i' .. ' ,iiiii:1,' . \ j -....„ 4'17 • •• -0 ...6 a c-4 48 .: .:i.,:. 3 ..-. _ - -- -0 o ,,-._- 0 w -CY .14114 - - MP ( o tn 3 - Akst:S#446 P (i) 0 --' --‘,- • 0 0 , CD, 0 111 -1 -I . . ,....1 .„ . . . , . .. , ‘41161100, ‘ :‘ 6 o'-3 lk • •-- CT a. ., ii r..,..,;.+ . , . ---pc./ • \ -4, % 4 a (7) cc--4 • ' „,....... ,/ , ... ,, ... , • t., -4P 3,4r,tou.3108,1 ea ... ..., ri • ..• , •,›6 AN: IN ..i ... .,11... 4,...... .. • Fi. .. ,,.. .. . • ... ,... 0 Pi it,/1111111. s.' . MI 0 •IrMiMik. -r.:,..;5•YzEr, •:-.i ,....ir. =-.z ....... L'..4-2,•tin,.t z-,g.v2.1 NI E5,,t4qt-4...g.gd CP (Al •PM • 2 a. 8.,.7'.8.g: . a, :- • ,,,,.. 4•. 4,4 th • tip.- i4Ks3.4.8.A1 m. of tP& ri-1.---- "*23.4. 4111- 4511UTTITU PROIRTMILIF SOH & Forestry Services of the Carolinas, PA - - PRELIMINARY MTE1SOILS Still-AWL'I Y MK a RIMY PO Box 832-Mooresville, NC 28115 SKETCM MAP COW:CKLIAC KU MUM - --....------ ---...-+ www.soilandforestryservices.com --.., I n o❑ n3 ID z n r a �0 M 1M 0 A Z-I Z .w ul N.-.Z Cr n-1 ZOryj- xmmo nuz- v�m 1 om-I ro Z0NW a r VI 7/711N/10 ❑ ma DZ- ❑❑ cn -1.. A c 4.O..1 - Z ❑AmN zxi n.AAm -❑ -4 Nm``z /Nq� T J Ai 0 \` , f �1C i . D x -•8 r :i w -ITI D A ME A . A O m 1 m❑ < • en —1 i M1 ci m HI' • S • 11i � : m ry a; a w ,3 x . CO : N O Z .. UI I1■II V h ' 1 — i V) �` \ :: " J El • T8 I 43. o mwo?w .w • w d0_r ..., 1 cOU r NHI-�A m �o Z❑"iP'4' �,o I o rz j `w m �_I of m rx -1 A n N r w w > r N N E 3. A r Y N 0 N m z m O O D w 2 D x m x GM n z A N z 1 1 z c w O E X z x ❑ G24 D Z n m ►'1 L1 ro o 7C N I a Z y 8, r o .A m x o ty c.1 'I y n m Z -1 P m A -I ❑ 2 3 3 m n v '.,. O W n i m A Z 1 n m -4 O D 4-• a o D v. W O 44 .A Z 3 A = Z O -r1 -r1 = A ZO .. m re4 ? -+ m --I Z .N-� nr m < -. - j 1 Z N Al m v Z y D !/1 -i 1 --1 w z Z -1 m m V V n N vr ■ A r l x x V _< A A D TV WV N m -I 2 I D as V m ■ A a O O A O O o '1 C7 _--1-1 co U1 N --<< m c c r, m co ‘o 10 Y -I D r m m m Z 3 n f 4 Z Z x o ~^ fD�*1 7ZC 1 i N m m r Z e• - �rub- . •r.S-/r O m 0 1+ O A A Z n ti t1 an -< A ... 0 Om N m x r n c z A O A �' '� v m O uI A •'m a. 0 1 ® N m � � -i I a O 0 a m ;z o m cn n O -1 m a Fri I m Z .;S Aro O rc `�.1 � m .FTI � o� O m p o r CI r Z m N xt cn N '-I a 71 O D ..� 71 O -I2"0--II X �j 0 O IU CO D A-I t7 W TI❑m T NI ) W X r O 0 t+ 1 R G3 - ( 1 Pi - 6C. ✓ C-,S 6 -7 Gy 69 O - G9 ,3 fiti - 7° P — ?c) ✓ Ii 6,7 - 3� G,t, - 37 Ili 601 : _335:t 2, p qrc Robert Phelps From: Wendell Overby <wendelloverby@gmail.com> Sent: Tuesday, April 26, 2022 11:52 AM To: Robert Phelps Subject: Clear Cove layout Attachments: 20220426_114959.j pg Attached is a picnof the colors and lengths. We laid out on 6ft centers. G stands for ghost line (interpolated line lengths). i