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E 020 <br /> IMPACT cont'd: I ci areas between 20,000 and 40,000 sq: ft. In light of the <br /> proposal contained in the Carrboro plan, some question exists _ - - <br /> as to whether the benefits of inspecting (on paper and/or in <br /> ,. the field) every site would exceed the cost of such inspections <br /> aid who will pay the additional expense if brought on by <br /> e panded inspection demands. Some question exists also as to <br /> ' h w effective these measures would be, since little attention <br /> has been given to erosion"sediment controls on agricultural <br /> ]and (exempt by statute) , much of which is located beyond <br /> Carrboro's jurisdiction. <br /> oning is one of the most effective means of maintaining <br /> water 'quality and is part of Carrboro's watershed protection <br /> Plan. Rather than continue the present watershed district <br /> cith its five (5) acre minimum lot size, the plan proposes <br /> graduated zoning scheme; i.e. , the greater the distance <br /> rom the lake, the more intensive the development allowed. <br /> upled with this approach axe impervious surface restrictions <br /> and runoff controls. !Minimum lot size requirements are <br /> educed, and commercial and industrial development are <br /> recommended on a limited basis. <br /> while this approach may seem logical, given the other controls <br /> Proposed, pollutants in a stream will reach the lake once <br /> they are in the stream. Furthermore, with the limited <br /> mount of commercial/industrial development existing and <br /> proposed j,i5 acres)., a more logical tactic would be to restrict <br /> Duch development to existing uses only. This would better <br /> rirotect the watershed and not place the County in the position <br /> of having to "follow suit" in that portion of the watershed <br /> within its jurisdiction. <br /> Another element of the watershed protection plan involves <br /> tormwater management and includes a requirement.for stormwater <br /> discharge produced by a development to approximate pre-development <br /> discharge rates. This may nqt be enough to insure water quality <br /> and some agreement needs to be reached as to what "pre-development" . <br /> unoff rates would be acceptable. <br /> Another recommended practice is the use of stormwater <br /> detention ponds, a practice that is falling into disuse by <br /> Other jurisdi <br />