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Powerline Plan and Environ. Assessment Jan. 2013 - Flood Control ...

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<strong>Powerline</strong> <strong>Flood</strong> Retarding Structure<br />

Pinal County, AZ<br />

Draft Supplemental Watershed <strong>Plan</strong><br />

<strong>and</strong> <strong>Environ</strong>mental <strong>Assessment</strong><br />

Rittenhouse <strong>Flood</strong> Retarding Structures (PVR FRSs) area is White which comprises 86.9% of the<br />

population. The total minority population is 13.1% with the breakdown of racial <strong>and</strong> ethnic<br />

demographics as follows: Black or African American 1.4%; American Indian <strong>and</strong> Alaskan Native<br />

1.0%; Asian 1.2%; Native Hawaiian <strong>and</strong> other Pacific Isl<strong>and</strong>er 0.2%; Other 6.6%; Population of<br />

Two or More Races/Not Hispanic or Latino 2.8%. The percentages of racial, ethnic <strong>and</strong> total<br />

minority populations appear to be consistent with those of the surrounding communities.<br />

The demographics were conducted on the area defined as the ‘Social Population Demographics<br />

Existing Conditions Study area’ (SPDECS) for the <strong>Powerline</strong>, Vineyard Road, <strong>and</strong> Rittenhouse<br />

FRSs <strong>and</strong> documented in the “Social, Population <strong>and</strong> Demographics Existing Conditions Study”<br />

(Kimley-Horn July, 2010). The analysis approach was based on Census Track <strong>and</strong> Block Groups<br />

within <strong>and</strong> adjacent to the SPDECS study area. The source of the data is the decennial Census<br />

2000 data sets from the United States Census Bureau (Census 2000). The SPDECS study is<br />

summarized in Appendix D – Investigations <strong>and</strong> Analysis Report.<br />

The median household income for the PVR FRSs area is between $32,055 <strong>and</strong> $101,124 for an<br />

average median household income of $60,789. This represents a slightly higher median household<br />

income than the neighboring communities which range between $33,170 (Apache Junction) <strong>and</strong><br />

$68,032 (Gilbert) for an average median household income of $58,399.<br />

4.17 AIR QUALITY/NOISE/LIGHT<br />

Air Quality<br />

The project area is located within non-attainment areas for the following pollutants: Ozone 8-hour<br />

<strong>and</strong> PM 10.<br />

Pinal County administers air quality in Pinal County through the Pinal County Air Quality <strong>Control</strong><br />

District (PCAQCD). The PCAQCD code of regulations (October, 2010) includes construction site<br />

rules which would be applicable to construction activities for the PVR project.<br />

Noise<br />

Pinal County noise ordinance is known as the “Excessive Noise Ordinance”. The ordinance<br />

includes limiting sound levels for l<strong>and</strong> use districts <strong>and</strong> construction start/stop times for<br />

construction of buildings <strong>and</strong> other projects.<br />

Light<br />

Pinal County has an outdoor lighting code within the County’s zoning ordinance which is intended<br />

to restrict the permitted issues of outdoor artificial illuminating devices emitting undesirable rays<br />

into the night sky. This code includes shielding <strong>and</strong> filtration requirements <strong>and</strong> prohibitions on<br />

specific lighting types.<br />

4.18 CULTURAL RESOURCES<br />

A review of NRCS project documentation for the flood retarding structures indicates that there<br />

were no known cultural resource considerations during original design <strong>and</strong> construction of the<br />

dams. There are also no known cultural considerations during the repairs of the dams conducted by<br />

the NRCS during 1978 to 1991.<br />

USDA- NRCS Page 4-10 <strong>Jan</strong>uary <strong>2013</strong><br />

Kimley-Horn <strong>and</strong> Associates, Inc.

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