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construction of subsre'face drains under fill placed on slopes), acceptable fill man, <br /> ~ad fill placement requirements (including method of placement and degree of fill <br /> corerfaction). The geotechnical recommendations for each lot should be cornpal/hie <br /> with'me overall geotechnical design for the entire subdivision. (MM 9.D.3) <br /> <br />72. The individual lot grading should be performed as rgcommended by the geotechnical <br /> and civil engineers. The lot owncr's enginccr~ should provide continuous inspection <br /> when lot grading is being performed to ensure the gr?riing work is being performed <br /> properly. (]v]3,i 9.D.4) <br /> <br />73. A geotecimi~ investigation should be performed on each lot. The expansion <br /> pot~nr~l of thc native malgmls and fill on the lot should be evaluated by the <br /> geotechnical engineer. The geotecbnical en~neer should provide foundation design, <br /> soil preparation and grading recommendations which arg a~ for on-site son <br /> and geologic conditions. The con'osivity of the nazive soils and fill should also be <br /> evaluazd by the geour. hnical engineer. All steel pipe should be coazed or have <br /> cathodic protection. (MM 9.E. 1) <br /> <br />74 . The sur/acc drainage syst~n on each lot should be ticsigned by a qualified civil <br /> engineer and should be compalible with the drainage system for the subdivision. The <br /> following itc~m_s should be included in*each lot's sur/a~ drainage system: (lVlM <br /> 9 .F.,.2) <br /> <br /> a. Surface drainage should be cardully controlled at the base of all slopes <br /> adjacent to building pads. Tlz civil engineer should submit proposed drainage <br /> techniques to the Cily for appmv-al; taking agstbetics as well as engineering <br /> ' czixm'ia into account. Dz-dinage improvements should be appropriate for the <br /> slope on the lot; concrc~lincd VHtitchu should be used only 'whcz~ equivalent <br /> and less obtrusive t__'~-hr'i'~2-"'~ are not appmpriaZ for use. <br /> <br /> b. All building pads should be rough graded with a 2 pcrcc=t slope. <br /> <br /> c. All roof downspouts should be conncct~ to a solLid pipe collector system <br /> which discharges at a suitable outlet. <br /> <br /> d. The crawl space of each hous~ should be providai with a drainage systcm <br /> wtdch will discharge all water which might cnzr the crawl space. <br /> <br /> e. The suzi=g next to tbe house should be graded with a sloPc °f al lcast 2 <br /> percent away from the house for a minimum distance of 4 feet. Tlie lot should <br /> be drained. with swales v,*bich slope 2 percent and discharge at a suilable <br /> <br /> <br />