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HomeMy WebLinkAboutEngineer's Installation Observation Report 02.10.2016Geo etch I4EPWORTW-PAWLAK GEOTECHNICAL February 10, 2016 Richard and Mary Jolley Family LLLP Attn: Kent Jolley 832 Canyon Creek Drive Glenwood Springs, Colorado 81601 kent'ollev sopris.ne Htltu+'rtlt Paw! d (iertecltni�.ii ins 5020 Grunt} Road 154 GILriwtx,d Spring-, Cult,' 'do 81601 Thune 970 445 7949 Fax 970 945 8454 Lm.ttl hp ve 1 hp,'LnteLh cunt Job No. 115 108B Subject: As -Built Evaluation of On -Site Wastewater Treatment System, Proposed Cabin and Existing Garage, Jolley Ranch, 1080 CR 335, Garfield County, Colorado Dear Mr. Jolley: As requested, Hepworth-Pawlak Geotechnical (H -P Geotech) observed the installation of the onsite wastewater treatment system (OWTS) for the proposed cabin and existing garage at the subject property. Our observations and recommendations are presented in this report. The services are supplemental to our agreement for professional services to the Richard and Mary Jolley Family LLLP dated March 25, 2015. We previously designed the OWTS for the project and presented our recommendations in a report dated September 29, 2015 under the above job number. The system was designed for four bedrooms for the cabin and the garage. The OWTS components observed included: sewer pipe, sewer pipe encasement, effluent transport pipe, distribution box, Infiltrator chamber soil treatment area, cleanouts, inspection ports and the locations of these components. The installer was Haywood Construction. We performed our As -Built site evaluation on October 29, November 20 and December 7, 2015. The installation and locations of system components were verified as shown on Figure 1. A Tu€ Tite distribution box was used instead of the Fralo distribution box specified in our design. This will not alter the effectiveness of the OWTS operation. Photographs of the OWTS installation are provided in the attached Photograph Log. It is our opinion that the OWTS was installed in general conformance with our design dated September 29, 2015. The soils observed at the base of the STA trenches were consistent with the sandy clay with gravel soils previously observed on the site and no sizing modifications to the design were recommended. Parker 303-841-7119 • Colorado Springs 719-633 -5562 • Silrerthorne 970-468-1989 Richard and Mary Jolley Family LLLP February 11, 2016 Page 2 The observations and recommendations presented above are based on our site observations and our experience in the area. We make no warranty either express or implied. Alterations to the system or improper backfill and site grading could affect the operation and effectiveness of the OWTS. Please feel free to contact us if you have any questions regarding this letter. Sincerely, HEPWORTH - PAWLAK GEOTECHNICAL, INC. Jason A. Deem Project Geologist Reviewed by: 011 Nifb • David A. Young, P.j., :o= Attachments: Figuret OWTS t.: ZJM Ja m ite Plan ph Log Job No, 115 108B Gigiech SOIL TREATMENT AREA CONSISTING OF SEVEN ROWS OF 25 INFILTRATOR QUICK 4 PWS STANDARD CHAMBERS IN EACH ROW (700 CHAMBERS TOTAL). ELQSrLNG FENCE '4•4••,.. a♦.* ra♦♦♦ •p o.w u ♦4,4♦ rip *4644. ♦*♦ *4,444 4 +4 ,ate 4 ♦♦ r♦ �+ ♦♦ ♦♦ ♦♦ ♦r ♦4 ♦+♦ �+♦ ♦4 ♦♦♦ **Os ♦ 444 *,b4,•• ♦♦ `�.t ♦r ♦♦ ♦♦♦♦ ++moi ♦♦♦♦ ��s�►, ._ ♦♦_ ♦i ♦♦♦ 50' MIN TO DITCH EXISTING 1.500 GALLON TWO CHAMBER �- COPELAND CONCRETE SEPTIC TANK WITH EFFLUENT FILTER IN TANK OUTLET TEE. ♦ 4%,k, 4.41111141P4444P4 et' 41,46 =r / TUF-TITE DISTRIBUTION BOX /MISTING DITCHES (TYP) /7 CLEANOUT 8" DIA WELL HEAD 10014N BM TOP OF CASING E[EV=8481.7 N. 1 LEANOUT 1 \ ` 4" PVC VENT APPROXIAMATE EXISTING LEACH — FIELD LOCATION AS PROVIDED OLD CISTERN 1 • ) ( OUT E UII.DING + O APPROXIMATE SCALE: 1 INCH = 40 FEET ti 1151088 Gtech HEPWORTH.PAW WC GEOTECHNICAL JOLLEY RANCH owrs AS -BUILT SITE PLAN FIGURE 1 OWTS AS BUILT PHOTOGRAPH LOG JOLLEY RANCH Photograph 1: View of sewer line and cleanout from garage. Cleanout is encased in concrete per our design. Photograph 2: View of encased sewer line from residence to existing septic tank. Job No. 115 108A Gtech OWTS AS -BUILT PHOTOGRAPH LOG JOLLEY RANCH _ 'r rte_ • r Photograph 3: View of end of sewer line encasement from house and connection with sewer line from garage. Photograph 4: View of effluent filter in existing septic tank. Job No. 115 1O&A OWTS AS -BUILT PHOTOGRAPH LOG JOLLEY RANCH ust I ;� 7�. -',fir Is°. !,•- � rJ'r I�5 } �. 4 it --N 4 �` !,. 1 P yr 3�Sw'kr Tlf•ji.":5Wa,•jQir. ii i. ] ... 4'!' Job No. 115 108A Photograph 5: View looking down into distribution box. Photograph 6: View of effluent lines from distribution box to soil treatment area trenches.