The URL can be used to link to this page

Browse Search

Home My WebLink About20113120.tiff HIGH PLAINS ENGINEERING & DESIGN, LLC 721 4th STREET, SUITE D, FORT LUPTON, CO 80621 • PHONE: (303)-857-9280 • FAX: (303)-857-9238 • August 3, 2011 A.C. Trucking, LLC P.O. Box 489 Fort Lupton, CO 80621 RE: To provide an onsite wastewater system design for the proposed commercial site at 15294 WCR 20, Weld County, CO Job # 10-2273 SEPTIC SYSTEM DESIGN DATA: The percolation test for the site performed by High Plains Engineering & Design, LLC (Report No. 10-2273) had an average percolation rate 50.9 minutes per inch (mpi) at a standard depth of 36-inches below grade. A clay limiting layer was found at a depth of 4.0 feet below grade so the system will have to be raised above existing grade. An open hole observation is required by this firm following removal of the topsoil and scarify the existing grade but prior to placement of fill material. • The absorption bed components are required per County Code to maintain a 4' separation from the limiting layer. A truck shop and office is planned for the site. We will plan for up to 12 full time employees (FTE), 12 drivers that report to the site and leave for the day, and 12 visitors at the site per day. ABSORPTION AREA FOR BED 12 FTE @ 20 GPD = 240 GPD 12 Drivers @ 5 GPD = 60 GPD 12 Visitors @ 5 GPD = 60 GPD TOTAL FLOW (Q) = 360 GPD FOR WELD COUNTY (bed): A = Ox1.5x1.3xil T A = 360 x 1.5 x 1.3 xl/ 55 = 1488 Square Feet 3.5 3.5 -> (Rock & Pipe) Design: One RAISED bed is required (24' X 64'), with 4 rows of perforated pipe in a "Rock and Pipe" absorption field. The pipe will • be encased in 3/4" to 2-1/2" gravel per governing specifications and backfilled with sandy soil as detailed in the cross section. 2011-3120 • The 12-inch layer of aggregate shall consist of clean, washed, graded gravel or rock to range in size from 3/4 inch to 2-1/2 inches with an average size of 1-1/2 inches. The rock shall extend from 2 inches above the top of the pipe, level across the bed, to 6 inches below the bottom of the pipe. The top of the rock shall be covered with landscape fabric to prevent the gravel from • becoming clogged by earth backfill. Shredded tires are an approved alternate for the rock in this type of system. Contact this firm to discuss suppliers and/or specifications. Alternate 460 STANDARD Q4 INFILTRATORS: 4 ROWS OF 15 EACH IN A 24' x 64' RAISED SEPTIC BED installed per the attached detail. A 10 MIL. (min) PLASTIC LINER WILL BE REQUIRED AROUND THE PERIMETER OF THE BED WHERE FINISHED GRADES ARE FILLED ABOVE EXISTING GRADES (Typical). COOL SEASON FESCUE GRASS SHOULD BE PLANTED ON THE ENTIRE ABSORPTION FIELD TO CONTROL EROSION AND AID WITH EVAPOTRANSPIRATION. NOTE: The Engineer and Health Department will inspect the site when perforated pipe or infiltrators, distribution box, rock or shredded tires and septic tank are in place. A final inspection may be made when the system is completed. • SEPTIC TANK SPECIFICATIONS: 360 GPD X (30HRS/24HRS) X 1.5 = 675 GALLONS 4 Install a 1000-gallon septic tank with two (2) compartments or units in series. NOTES: 1. Provide a minimum of five (5) feet between the distribution box and the septic tank or any building. 2. Provide a minimum of five (5) feet of solid pipe between the distribution box and the laterals. Installer to provide schedule 80 pipe when trenching below road or driveway. The absorption "bed" area shall be isolated from all vehicular travel, parking, grazing and storage areas. A lift pump will be required for this system since the minimum specifications of 1/8" per foot of fall between the office, septic tank and the distribution system cannot be met (refer to lift pump detail). All construction is to be in accordance with Weld County Colorado Department of Public Health and Environment's Individual Sewage Disposal • System Regulations. Certification: I hereby certify that the septic system shown on this plan was made by me or under my direct supervision .nd is accurate to the best of my knowledge or belief. _ „op'.EG,,,,N1 ti i"`p ••sc40O�6 iii O ` /1':� 33548 °. Todd M. Schroeder, i P °i. ' 4$a �'h.. ou Attachments: Profile Hole Log Figure 1: Rock & Pipe and Chamber bed section views Figure 2: Lift pump detail Figure 3: Septic system site plan • !Profile Hole Log 0 - 1 SANDY SILT(SM) ---- 2 CLAY WITH MEDIUM PLASTICITY (CL) ---- 3 - 4 CLAY WITH LOW PLASTICITY (CL) LIMITING LAYER(CH) ---- 5 ---- 6 - 7 CLAY WITH HIGH PLASTICITY (CH) -- 8 ---- 10 13 • / I / b / i , I I 70'II y I Z.!a • 2 x U / F D cn O zIF a wIv 2 I F < 7, Ia 2: 'I A I I a FF--�i --1. 2 0I0 '.y x ' Ix Ct ,S,1r m��v(,Y- 3 Z U O I O L1.1 cr, Q U H r1val? i4� G 21 LUW rUI 0 LL ��' j L0 W ~ `0 I-- -Z ><-I c V Ur W r C L in in x0m0 z U Om N ' K W -1 J U & (5'3) F 11 o c�° c i, � E ;43 w a 3 4 OU N CO _ j� FA/�Y 1-4O 7 <0Cz )i > Q-1 V m 1+1 J . )`" y W LW c U Ci • ; o ICI C ( ;,0 2 > fr-1 x o LI.1( I W - rn Tr! * - _.. Irk a. I C(' \\/I / I I I ! NINA ..tI ' 1'3dld U IUNf] A I H.Ld34 ..9 R Pm C.7 in W w \ 7'Z O \ "I0 0 1 XtJ \ ~I 7 n Q F � I • u d w o a0 zl ; rJ F I B U • F / " f 2IH \.... __ J I J a � & z Ix z 0 a - - U 1--I a O — -- --- U A I W 1-4 I_.-------1 >- p? '_J o -,- > V] `�F� X ¢ wcc..~ O — o c QuO. o U c - H /H r a p 0 L,, - x n14 W w Lt. J M mo ¢ L Li] J FY z ( z z ,'°x14 tn v C ! t0-. =J F-E0 5 —I( 3 � J Q J • CQ N N v YZ z8 m� x U L 1 F w (24 O .8711H H —iio x � H J ci 1� :n p I r~-4 m cc I Z 1 F J V1 Q- . . v p N< G W G U C LL O1 w _ }JOG FrT-i .� U 4 .. v___ _...-- 1c LywJj al ..a f, < 20a .N.� 0F ct U) Xdw „t-,Z O C p p O ° �°zp- V)ttO wI7 I, • J II C LY L)Cl F- rz w w _ w L L _ J w'Z > u 1-. LJ "-wLJ CL CT UO a w o � J II 2, T > d G l9 06I L)1- Jp , V Z U ^ a l F' Z ]- O 7 4)N Ow o ILA Z 37- -. z m V X LJ E- L,J 06 H O (J Y - 2'LJ z Z [J yv. 7 -1 L.J 1- (i M w W Z o I + 1 1 z l L Y m F I wCY U O U I I Vi OLA n L) _IU LA t_ w,- LJ U Q O O (I. c0 2 U 0 9 XII L Y w (1 CC DI V u cLCY wa w \\ i j 1 I I X f- N 1 U _J< I X a U Cl a 1-w l7 LI a_ � \ vi > ',H � 6 Z Cr Z LJ U 1) N. W2 Z w_.1 1J LL S Ja O � ; IJ(1 Q fJ w Q od \ Fa J ao n i ' ,' qtn i_ ' W �� s a D J¢lF 6/ J Q IS II / / 0 7 / LIII- IIIEIJI L x > Will LJ Qom ≥ A/ LS 2 › o z^ IIIHIF vv) 1I w F- (Mr)': 0z IINI� ao� ow wa col IUjQ 7 IA �l� Q Uw Id C L Icy ww Al 0 N Z> Ii� 4 I z lOA 3 L >o M 0 6 u C n z > V,C] I F L 1� o w J FIIL O (2 n - L)IL J U6 ,,, I I m 3 w U a O F K w =Fr o a a I J m C .d III II LYc) a F m y w H_mE CV O Y U n LI [HIE_ EL a IlEll n w I >. Z N o II-I `) .. L `. EllE 31 IRI w [ LJ uz I z IIICH w U W t_ O 0 lJIFIEI�I a ry Q LJ _IW m n Y Ca O O L nil- IY o 3 v z.In a a Li Till II IL \\ Li IIliCll l / w x O 7 m W ID H • • Av SITE N/ AP 15294 Weld County Road 20 Weld County, CO WELD COUNTY ROAD 2O x x x x x x x x x x x x x x x x x x x r Cl Pn (1) N x x x 4 ROWS OF 4' PERFORATED PIPE IN A DISTRIBUTION BOX ROCK 8. PIPE SYSTEM BACKFILLED WITH x APPROVED GRANULAR SOIL LIFT PUMP CIF NEEDED) • x NEW 1000 GALLON (MIN.) xl r SEPTIC TANK N P � O O X 64' 1 7' ro PERC PROFILE PKOPOSED BUILDING x EXISTING BARN/SHOP FIGURE 3 LEGEND All locations shown above are based on specific information furnished by others or estimates made in the field by High O-Percolation Test Hole Plains Engineering & Design personnel. The locations, distances, •X—Percolation Profile Hole directions, etc. are not the result of a property survey but are approximations and are not warranted to be exact. It is A-Soil Profile Hole the owner/builder's responsibility to define property - boundaries and ensure all onsite improvements are located X X-Fence within the platted site and out of inappropriate easements. All distances are to be verified prior to excavation. Weld County Health Department 6/22/2011 Percolation Test and Soils Data • rrnsn HIGH PLAINS ENGINEERING & DESIGN, LLC 721 4th STREET,SUITE D,FORT LUPTON,CO 80621 • PHONE: (303)-857-9280 • FAX: (303)-857-9238 FILE NO. 10-2273 ( Property Address 15294 WELD COUNTY ROAD 20 Legal Descnption WELD COUNTY, CO Contact Information Name A.C.TRUCKING, LLC Street P.O. BOX 489 City,State,Zip FORT LUPTON, CO 80621 Phone(303)304-4487 Saturation and Swelling Groundwater Smeared Surfaces Encountered at I GREATER THAN 13 feet Removed: YES Sand or Gravel Added: NO Estimated depth to maximum seasonal water table if not Date and Time Presoak 6/16/2011 date encountered in profile: • Water Added: 11:00 time Amount of Presoak Is area believed to be subject to Water Added: 15 gallons seasonal fluctuations which could Date and Time result in a seasonal water table within Percolation Test 6/17/2011 date 8'of surface? Started: 9:30 time Slope Determination in Absorption Area Did Water Remain in Hole After the Overnight Swelling 1.5 Period? to the NORTHWEST direction Hole 1 NO Hole 2 NO Bedrock* Hole 3 NO Encountered @ GREATER THAN 131feet Hole 4 NO Hole 5 NO Estimated depth if not encountered in Hole 6 NO profile: Percolation Kate Percolation Measurement Deep(In) Rate(min/in) Hole 1 36 55.56 Type of Bedrock:) Hole 2 36 41.67 Hole 3 36 55.56 Hole 4 36 55.56 Is bedrock fractured or weathered? Hole 5 36 41.67 Hole 6 36 55.56 Is bedrock believed to be permeable Average 50.93 (perc rate<60 min/in)? • *LIMITING LAYER AT A DEPTH OF 4 FEET. Weld County Health Department 6/22/2011 Percolation Test and Soils Data • Profile Hole Information (cont.) Note:Soils must be classified using unified system ASTM D2487 Profile Hole Log 0 1 I SANDY SILT(SM) 2 - _ CLAY WITH MEDIUM PLASTICITY(CL) u- 3 4 CLAY WITH LOW PLASTICITY(CL) LIMITING LAYER(CH) - 5 6 - 7 CLAY WITH HIGH PLASTICITY(CH) - 8 • 10 — 13 Certification I certify that the above information is correct and complete to the best of my knowledge and that all tests were performed in the accordance with the provisions of Weld County Health Department individual sewage disposal regulations by myself or under my supervision. 0 REQjf'4i S /A.:m:1 / _ � �m I�, High Plains Engineering Signature i 54,8 3 f & Design LLC fll aa�ll tl,1721 D Ft. Lupton, CO 80621 �yroNAL 303-857-9280 Date SITE MAP 15294 Weld County Road 20 Weld County, CO WELD COUNTY ROAD 20 x x x x x x x x x x x x x x x x x x x x Cl x rn lP x x x x x x x x • x x 0 0 x 0 0 0 0 j x x tl x 121.29_i x x x x x EXISTING BARN/5t1OP x x > x x x x x x x x x x x x x x x LEGEND AU locations shown above are based on specific information o-Percolation Test Hole furnished by others or estimates made in the field by High Plains Engineering & Design personnel. The locations, distances, �X-Percolation Profile Hole directions, etc. are not the result of a property survey but are approximations and are not warranted to be exact. It is A—Soil Profile Hole the owner/builder's responsibility to define property - boundaries and ensure all onsite improvements are located X X-Fence within the platted site and out of inappropriate easements. AU distances are to be verified prior to excavation. Hello