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environmental assessment for the hog lake road improvement project

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Ramona Hog Lake Road Improvement Project August 2011<br />

Resource Mitigation Method / Design Criteria<br />

Biological Resources<br />

Quino<br />

Checkerspot<br />

Butterfly<br />

AIR-2: Dust suppression techniques shall be employed, such<br />

as watering during construction activities to prevent (or<br />

suppress) <strong>the</strong> fine particulate from leaving <strong>the</strong> surface and<br />

becoming airborne through <strong>the</strong> action of mechanical<br />

disturbance or wind. Watering of exposed soils in traffic areas<br />

and covering stockpiles of sand, soil and similar materials on<br />

construction sites (minimum twice daily)<br />

AIR-3: The load of all haul trucks shall be covered;<br />

AIR-4: Truck speeds on unpaved surfaces shall be limited to<br />

15 miles per hour;<br />

AIR-5: Stationary and mobile equipment shall be maintained<br />

in proper working order, i.e., tuned <strong>for</strong> maximum efficiency<br />

per manufacturer’s specifications;<br />

AIR-6: Cleaning loose soil from construction vehicles be<strong>for</strong>e<br />

exiting <strong>the</strong> work site; and<br />

AIR-7: Restricting or prohibiting work on days of high winds<br />

(>30 mph) or when air quality is very poor.<br />

BIO-1: In order to compensate <strong>for</strong> <strong>the</strong> loss of 0.15 acres of<br />

Red Shank Chamise Chaparral, mitigation credits shall be<br />

purchased at no less than a 1:1 ratio at <strong>the</strong> Wilson Creek<br />

Mitigation Bank or o<strong>the</strong>r suitable (USFWS approved) bank, or<br />

mitigated in <strong>the</strong> Project area, on lands designated and<br />

approved by <strong>the</strong> USFWS.<br />

BIO-2: All <strong>road</strong> grading work shall be conducted outside of<br />

<strong>the</strong> adult Quino checkerspot butterfly flight season and <strong>the</strong><br />

growth season <strong>for</strong> Quino checkerspot butterfly host plants -<br />

February 1 – July 31.<br />

BIO-3: Standard Best Management Practices (BMPs) will be<br />

employed to limit <strong>the</strong> release of fugitive dust. See AQ-1<br />

through AQ-7.<br />

Frank Springer & Associates, Inc. Page 16 of 79 Environmental Assessment

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