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HomeMy WebLinkAboutSWG2023-00349 WET SEASON OBSERVATIONS - SWG Letters / Memos - 9/30/2024 j//-\ V! III ! SIP 3 U 7ZO F ;Wrf hIII R/ Public Health RhveYsMMWNras IkalkittMasmCwmty BY:_ 415 N 6° Street Bldg 8,Shelton WA 98584 Shelton:(360)427-9670 ext 400 O (360)( �787 ext 400 4 EIM:(360)482-5269 ext 400 FAX(360)42 Wet Season Observations SWG: �--©�3— 003� 1. Preliminary Activities A wet season monitoring program will be conducted after completion of the appropriate application form and payment of fees. The fees are based on whether the monitoring was performed by Mason County Public Health(6 inspections) or by a licensed designer(with 3 quality assurance inspections by Mason County Public Health.) if a licensed designer will be conducting the monitoring program, a site specific monitoring plan will be submitted by the designer as part of the overall system design. 2. Site Preparation A minimum of 2 observation ports will be installed in locations representative of a cross section of the proposed drainfield area. Recommended monitoring port design will consist o£a.vertically oriented section of 4 inch diameter perforated pipe, wrapped in filter fabric'and bedded in clean,washed dmimock or pea-gravel that has been backfilled into a 12-24 inch test hole. The drainpipe should be capped and flagged so as to be easily visible to Public Health staff. 3. Observations and Presentation of Findings Wet season observations will take place during the months of January through March. The frequency and timing of observations will be dependent on site characteristics and on rainfall characteristics dljat occur during the monitoring period. The designer will submit a minimum of 6 observations along with the NCDC rainfall data for the area during the period of January through March (bftn://www.nedc.nose.gov/oa/mvo/freedata.htmi). Observations will be recorded with the date and time of the observation and the depth of the water in the pipe. _ 4. Analysis of Findings Monitoring results will not be considered valid when the rainfall for the period of observation did not exceed 80%of the 10 year average rainfall for the area during the 6-month period of October through March. 5. Site Sketch(location of test holes and numbers) �6 Updated 1/19/2016 �b� 3x 45' pr�mwrv� x(c0' OScor 9$5i ^b + of n {a,,,k5 D.F. 1 /1 Curiaiv� P \ anK z s Kew VS- Toq. aF K Q Audio-Visual Alarm c , . R © Cleanout l © 1200 Gallon Septic Tank N 2-Compartment with G Muent Filter t9p MM\. Q P O4 12A0 Gallon Pump Chamber A OS Valve Control Box S � s yew.sewl ru.�e�F R 6 'Per -S )41 ' +f r Ari-aln drta;n raqL4red 1oec uOe op rAatf I'. S n tes+ heks TeST HOLE 90 -iJkk #I,r 33' LS w[ t PLOT PLAN 5tructkLXYV,33- 5-1, CHiFKL+S BUTROS d,Mp compc+Cijis. PA0.LG4 1!s1-Ab-00000 a+.7..^0-34" lS wlti9v* l�8 E SUtJSE C !lILI RDSUtvSE C lIILI RD S{ r nc�ur� 34=54" daN1p is w�5�1+ (t a&ld lew fo 6000a 4 then" Wilt Wet Season Observations t#I: 60 ' Log Sheet Owner Name: Cyr'us Parcel Number: 2212?- 1-f3- 000O 0 NOTE: All measurements are from original grade to water level, not top of pipe. F rt#1 Test Hole/Port#2 Test Hole/Port#3 TestHole/Port #4 ults Date&Results Date&Results Date&Results 01 I t /1ozSw 13' 4o "akr.� 6(L�ad w i1 wa�/ �e�/ Gv✓�fo 2G j 3(tglzvt (IV (Ica This form may be scanned and available for public view on the Mason County Web site. Updated 1/19/2016