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<br />. Kept area east of Broadway in Al04A4 subwatershed due to the fact that recent <br />LiDAR of the area supports CivilTech's contention that eastern boundary of <br />Al04A4 drainage subarea is established by low ridge that runs along Galveston <br />Bay. <br />. The golf course area was changed in the hy; raulic models and rerun as a purely <br />undeveloped area since the golf course has '~iIr tention via amenity lakes and <br />water hazards. <br />. The total amount of runoff from the watershe in a design event decreased by 78 <br />cfs in the hydrologic models when the percent impervious and percent developed <br />numbers were changed for the Al04A2 and Al04A4 drainage sub areas <br />. We shared with CivilTech the fact that there was a submitted general plan for <br />most of the Al04A2 subarea that indicated that the area will develop as single- <br />family residential. CvilTech took this and input it into their hydrologic models. <br />The revised study has revised HEC models that reflect this. <br />· The cumulative effect of the changes we asked for was to decrease the needed <br />regional detention by approximately 14 AC*FT. <br />. The revised study has revised exhibits showing the smaller and relocated regional <br />detention pond (Exhibit 2). <br /> <br />