Perkinsville 44 Phase 2 CastleRock Communities

Registration No. DM24-061843 PERKINSVILLE 44 – PHASE 2 aka PERKINSVILLE 40; PERKINSVILLE 44

The site has been designed such that the 10-year flow will be contained below the top of curbs and the 100-year flow will be a minimum of one (1) foot below the adjacent finished floor. In addition, all finished floor elevations have been designed a minimum of 14-inches above the lowest drainage outfall for residential lots. Based on current Federal Emergency Management Agency’s (FEMA) Flood Insurance Rate Maps (FIRMs), the Perkinsville 44 site is located on Map Number 04025C1315G dated September 3, 2010 and lies within Zone “X”. Per FEMA and the above referenced FIRM panel, Flood Zone “X” is defined as: Zone “X” is defined as follows: “Areas determined to be outside the 0.2% annual chance floodplain.” Based on requirements of FEMA and Town of Chino Valley, developments within Zone “X” flood hazard areas do not require flood insurance. However, private and public lending institutions may require flood insurance.” -End of Letter SOILS: Thomas M. Perkins, P.E., and Delbert A. Rapier, M.S.E. and P.E., of ProTeX - the PT Xperts, LLC, reports in their Executive Summary dated August 13, 2020, the following in part: “ProTeX was contracted by Sage Land Holdings, LLC to provide general information with respect to the engineering characteristics of onsite soils and provide recommendations for foundations and pad preparation for the site referred to as Perkinsville 40 located at Perkinsville Road and Road 1E in Chino Valley, Arizona. This firm understands the proposed development will consist of one- or two-story single family residential structures imposing relatively light to moderate foundation loads. Field investigation and laboratory testing indicated that the site consists mainly of silty sand, sandy silt, lean clay and fat clay. The expansion potential for site soils when foundation bearing soils are exposed to a moisture increase is anticipated to be low to medium for the surface level soils. All lots are subject to expansive soils and post-tensioned slab/foundation systems are recommended. Settlements at the site are anticipated to be within acceptable tolerances provided that pad preparation is performed as specified and no significant changes in moisture content of foundation/floor slab bearing soils occur and proper drainage and irrigation control are maintained. Drainage should be directed away from the structure and off the lot during and after construction and should be maintained for the life of the project. In no case, should long-term ponding be allowed near structures. Proper design and placement of yard vegetation and irrigation systems should be used so that structural foundation slab bearing soils are not exposed to moisture content fluctuations.

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