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'. 13i h',. iauu .5wi , R-0ed�a� iU�sfdZ <br /> 11192' pLme .- 20V,83.19B i n r;ne l iih.0 '10 110,1,11111 <br /> May 14•, 2015 <br /> Brock Martinson <br /> CTA Architects Engineers <br /> 800 West Main Street#800 <br /> Boise, Idaho 83702 <br /> Re: Bayer OrepScience Acampo facility- Leachfield and Seepage Pit Design <br /> Dear Mr. Martinson: <br /> I have reviewed the design capacity of the 3 —60-foot leachfield drainage pipes and 3 —36-inch <br /> diameter 25-foot deep seepage pits located at the end of each leachfield pipe. The percolation <br /> rate tested is 4.39 minutes/inch as stated on the Onsite Wastewater Treatment System Permit <br /> Land Use Application#PA-0600237 for this site located at 7087 East Peltier Road in Acampo, <br /> California. <br /> Based on the San Joaquin County Environmental Health Department standards and standard <br /> engineering design,the new building foundation constructed 5 feet fiom one of the drainage <br /> pipes will not significantly impact the capability of the wastewater treatment system to function <br /> normally. Additionally,there is no apparent damage to the leachfield drainage pipes caused by <br /> the construction of the new building foundation. <br /> If you have any questions regarding these findings, or the project in general,please call me at <br /> 530.400.4594 or email me at devensen@kellerassociates.com. <br /> t <br /> Very truly yours, <br /> KELLER ASSOCIATES, INC. <br /> Q�OFESSI Nql <br /> Darrel Evensen,P.E. ��,��QrC� FtisF2y <br /> Project Manager c`-Q 2 <br /> 58 <br /> �TqT CIW- pQ= <br /> F OF pA��� <br /> i <br /> r <br /> `210116-610/2ns-ls7 <br /> Gladalnu Id�� �4tl1. <. LL uUuui T�;,elc0u IlurkFp mg- oelem <br />