Site Reconnaissance - Revision history

Grichards@gfnet.com at 22:21, 28 July 2023

2023-07-28T22:21:21Z

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	"A preliminary investigation consists of a field study and a review of available literature and maps relating to regional geology and physiography. The general physical feasibility of the site is assessed and specific questions to be answered during the design process posed. Field studies should include a thorough inspection of outcrops, cut banks, and other surface exposures and an examination of erosion conditions, landslides, seeps, springs, and other conditions on and adjacent to the project site."<ref name="NEH_CH2">[[National Engineering Handbook: Chapter 2 - Engineering Geologic Investigations \| National Engineering Handbook: Chapter 2 - Engineering Geologic Investigations, NRCS, 2012]]</ref>		"A preliminary investigation consists of a field study and a review of available literature and maps relating to regional geology and physiography. The general physical feasibility of the site is assessed and specific questions to be answered during the design process posed. Field studies should include a thorough inspection of outcrops, cut banks, and other surface exposures and an examination of erosion conditions, landslides, seeps, springs, and other conditions on and adjacent to the project site."<ref name="NEH_CH2">[[National Engineering Handbook: Chapter 2 - Engineering Geologic Investigations \| National Engineering Handbook: Chapter 2 - Engineering Geologic Investigations, NRCS, 2012]]</ref>

Mpollei@gfnet.com at 22:52, 10 July 2023

2023-07-10T22:52:40Z

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	==<noautolinks>Best Practices Resources</noautolinks>==		==<noautolinks>Best Practices Resources</noautolinks>==
	{{Document Icon}} [[National Engineering Handbook: Chapter 2 - Engineering Geologic Investigations \| National Engineering Handbook: Chapter 2 - Engineering Geologic Investigations, NRCS~~, 2012~~]]		{{Document Icon}} [[National Engineering Handbook: Chapter 2 - Engineering Geologic Investigations \| National Engineering Handbook: Chapter 2 - Engineering Geologic Investigations, NRCS]]
	{{Document Icon}} [[National Engineering Handbook: Chapter 2 - Engineering Geologic Investigations \| National Engineering Handbook: Chapter 2 - Engineering Geologic Investigations, NRCS~~, 2012~~]]		{{Document Icon}} [[National Engineering Handbook: Chapter 2 - Engineering Geologic Investigations \| National Engineering Handbook: Chapter 2 - Engineering Geologic Investigations, NRCS]]
	{{Document Icon}} [[Geophysical Exploration for Engineering and Environmental Investigations (EM 1110-1-1802) \| Geophysical Exploration for Engineering and Environmental Investigations (EM 1110-1-1802), USACE~~, 1995~~]]		{{Document Icon}} [[Geophysical Exploration for Engineering and Environmental Investigations (EM 1110-1-1802) \| Geophysical Exploration for Engineering and Environmental Investigations (EM 1110-1-1802), USACE]]
	{{Document Icon}} [[Design of Small Dams \| Design of Small Dams, USBR~~, 1987~~]]		{{Document Icon}} [[Design of Small Dams \| Design of Small Dams, USBR]]

	==<noautolinks>Trainings</noautolinks>==		==<noautolinks>Trainings</noautolinks>==

Grichards at 23:28, 16 March 2023

2023-03-16T23:28:01Z

← Older revision		Revision as of 23:28, 16 March 2023
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	"In areas where the [[soils]] and geologic conditions are well known, a detailed investigation may not be necessary for small, low-hazard structures. For such structures, the preliminary investigation needs to be sufficiently detailed to provide relevant information on site materials, conditions, and [[engineering]] characteristics for planning, design, and cost estimates."<ref name="NEH_CH2" />		"In areas where the [[soils]] and geologic conditions are well known, a detailed investigation may not be necessary for small, low-hazard structures. For such structures, the preliminary investigation needs to be sufficiently detailed to provide relevant information on site materials, conditions, and [[engineering]] characteristics for planning, design, and cost estimates."<ref name="NEH_CH2" />

	See also: [[Geologic History]]		See also: [[Geotechnical and Geology]] > [[Geologic History]]

	==<noautolinks>Best Practices Resources</noautolinks>==		==<noautolinks>Best Practices Resources</noautolinks>==

Rmanwaring at 23:18, 19 December 2022

2022-12-19T23:18:39Z

← Older revision		Revision as of 23:18, 19 December 2022
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	==<noautolinks>Best Practices Resources</noautolinks>==		==<noautolinks>Best Practices Resources</noautolinks>==
	{{Document Icon}} [[National Engineering Handbook: Chapter 2 - Engineering Geologic Investigations \| National Engineering Handbook: Chapter 2 - Engineering Geologic Investigations, NRCS, 2012]]		{{Document Icon}} [[National Engineering Handbook: Chapter 2 - Engineering Geologic Investigations \| National Engineering Handbook: Chapter 2 - Engineering Geologic Investigations, NRCS, 2012]]
	{{Document Icon}} [[National Engineering Handbook: Chapter 2 - Engineering Geologic Investigations \| National Engineering Handbook: Chapter 2 - Engineering Geologic Investigations (NRCS, 2012)]]		{{Document Icon}} [[National Engineering Handbook: Chapter 2 - Engineering Geologic Investigations \| National Engineering Handbook: Chapter 2 - Engineering Geologic Investigations, NRCS, 2012]]
	{{Document Icon}} [[Geophysical Exploration for Engineering and Environmental Investigations (EM 1110-1-1802) \| Geophysical Exploration for Engineering and Environmental Investigations (EM 1110-1-1802) (USACE, 1995)]]		{{Document Icon}} [[Geophysical Exploration for Engineering and Environmental Investigations (EM 1110-1-1802) \| Geophysical Exploration for Engineering and Environmental Investigations (EM 1110-1-1802), USACE, 1995]]
	{{Document Icon}} [[Design of Small Dams \| Design of Small Dams (USBR, 1987)]]		{{Document Icon}} [[Design of Small Dams \| Design of Small Dams, USBR, 1987]]

	==<noautolinks>Trainings</noautolinks>==		==<noautolinks>Trainings</noautolinks>==

Grichards at 05:09, 14 December 2022

2022-12-14T05:09:42Z

← Older revision		Revision as of 05:09, 14 December 2022
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	==<noautolinks>Best Practices Resources</noautolinks>==		==<noautolinks>Best Practices Resources</noautolinks>==
	{{Document Icon}} [[National Engineering Handbook: Chapter 2 - Engineering Geologic Investigations \| National Engineering Handbook: Chapter 2 - Engineering Geologic Investigations, NRCS, 2012]]		{{Document Icon}} [[National Engineering Handbook: Chapter 2 - Engineering Geologic Investigations \| National Engineering Handbook: Chapter 2 - Engineering Geologic Investigations, NRCS, 2012]]
	~~{{Document Icon}} [[Engineering Geology Field Manual 2nd Edition, Volume 2 \| Engineering Geology Field Manual 2nd Edition, Volume 2 (USBR, 2001)]]~~
	{{Document Icon}} [[National Engineering Handbook: Chapter 2 - Engineering Geologic Investigations \| National Engineering Handbook: Chapter 2 - Engineering Geologic Investigations (NRCS, 2012)]]		{{Document Icon}} [[National Engineering Handbook: Chapter 2 - Engineering Geologic Investigations \| National Engineering Handbook: Chapter 2 - Engineering Geologic Investigations (NRCS, 2012)]]
	{{Document Icon}} [[Geophysical Exploration for Engineering and Environmental Investigations (EM 1110-1-1802) \| Geophysical Exploration for Engineering and Environmental Investigations (EM 1110-1-1802) (USACE, 1995)]]		{{Document Icon}} [[Geophysical Exploration for Engineering and Environmental Investigations (EM 1110-1-1802) \| Geophysical Exploration for Engineering and Environmental Investigations (EM 1110-1-1802) (USACE, 1995)]]
	{{Document Icon}} [[Design of Small Dams \| Design of Small Dams (USBR, 1987)]]		{{Document Icon}} [[Design of Small Dams \| Design of Small Dams (USBR, 1987)]]
	~~{{Document Icon}} [[Earth Manual Part 1 \| Earth Manual Part 1 (USBR, 1998)]]~~

	==<noautolinks>Trainings</noautolinks>==		==<noautolinks>Trainings</noautolinks>==

Grichards at 05:08, 14 December 2022

2022-12-14T05:08:00Z

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	[[Category:Geotechnical Exploration]]		[[Category:Geotechnical Exploration]]
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Grichards at 05:07, 14 December 2022

2022-12-14T05:07:38Z

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	<!-- Introductory paragraph or topic page summary -->		<!-- Introductory paragraph or topic page summary -->

	~~==Geologic Reconnaissance==~~

	{{Picture		{{Picture
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			"A preliminary investigation consists of a field study and a review of available literature and maps relating to regional geology and physiography. The general physical feasibility of the site is assessed and specific questions to be answered during the design process posed. Field studies should include a thorough inspection of outcrops, cut banks, and other surface exposures and an examination of erosion conditions, landslides, seeps, springs, and other conditions on and adjacent to the project site."<ref name="NEH_CH2">[[National Engineering Handbook: Chapter 2 - Engineering Geologic Investigations \| National Engineering Handbook: Chapter 2 - Engineering Geologic Investigations, NRCS, 2012]]</ref>

	"The ~~results of~~ the geologic ~~reconnaissance are used to assess~~ the ~~need for more detailed investigation and whether additional technical expertise is needed."<ref name="NEH_CH2">~~[[~~National Engineering Handbook: Chapter 2 - Engineering Geologic Investigations \| National Engineering Handbook: Chapter 2 - Engineering Geologic Investigations, NRCS, 2012~~]]~~</ref>~~		"The geologist and the designer should discuss geologic conditions that may influence the design, [[construction]], cost, and functioning of the proposed structure. If these conditions appear adverse, a more intensive investigation may be required to assess site feasibility."<ref name="NEH_CH2" />

	~~"Geologic reconnaissance includes the collection and review of existing data. Characteristics of the site should be assessed~~, ~~including geomorphology, topography, drainage~~, and ~~other conditions that might affect the suitability~~ of the ~~site for its intended use and for potential impacts on natural resources~~. ~~Site visits~~ may be ~~conducted~~ to assess ~~the suitability of the area for the proposed project, verify the accuracy or adequacy of existing information, and identify significant gaps in information needed to continue with the design~~."<ref name="NEH_CH2" />

	"~~The [[engineering]] properties of soil and rock materials need to be evaluated. Consideration of how~~ the [[~~operation~~]] of the proposed project, structure, or practice might affect local natural resources must be addressed. Logistical concerns, such as access, that may affect future activities also need to be addressed. Existing data and ~~information should be reviewed before field investigation. Data and information sources include~~ geologic ~~maps, topographic maps,~~ well ~~logs~~, aerial photographs and other imagery, soil surveys, water and mineral resource reports, and other reports and information sources that pertain to the area of the site and the nature of the project."<ref name="NEH_CH2" />		"In areas where the [[soils]] and geologic conditions are well known, a detailed investigation may not be necessary for small, low-hazard structures. For such structures, the preliminary investigation needs to be sufficiently detailed to provide relevant information on site materials, conditions, and [[engineering]] characteristics for planning, design, and cost estimates."<ref name="NEH_CH2" />

	~~"Limited on-site investigations~~ may be ~~conducted to assess the feasibility and suitability of the site~~, ~~to recognize hazards~~, to ~~verify the accuracy or adequacy of existing information, and~~ to ~~identify significant gaps in~~ information ~~needed to continue with design. Data gathered during the reconnaissance are primarily descriptive and should include the following:~~
	*general geology of the site~~: surface and subsurface earth~~ materials;
	*geologic conditions ~~that may affect erosion~~ and [[~~sedimentation~~]];
	*geologic conditions that may influence [[groundwater]] movement and recharge;
	*general character of topography and stream system;
	*engineering properties of soil and rock materials;
	*presence and activity of faults;
	*general relationship between the geologic conditions at the site and known or typical design requirements for ~~the proposed conservation practice or structure;~~
	*known or projected mining activities and oil or gas extraction."<ref name="NEH_CH2" />

	~~==Preliminary Site Investigation==~~
	"A preliminary investigation consists of a field study and a review of available literature and maps relating to regional geology and physiography. The general physical feasibility of the site is assessed and specific questions to be answered during the design ~~process posed. Field studies should include a thorough inspection of outcrops, cut banks~~, and ~~other surface exposures and an examination of erosion conditions, landslides, seeps, springs, and other conditions on and adjacent to the project site."<ref name="NEH_CH2" />~~

	~~"The geologist and the designer should discuss geologic conditions that may influence the design, [[construction]],~~ cost~~, and functioning of the proposed structure. If these conditions appear adverse, a more intensive investigation may be required to assess site feasibility~~."<ref name="NEH_CH2" />

	~~"In areas where the~~ [[~~soils~~]] and geologic conditions are well known, a detailed investigation may not be necessary for small, low-hazard structures. For such structures, the preliminary investigation needs to be sufficiently detailed to provide relevant information on site materials, conditions, and engineering characteristics for planning, design, and cost estimates."<ref name="NEH_CH2" />		See also: [[Geologic History]]

	==[[Best Practices Resources]]==		==<noautolinks>Best Practices Resources</noautolinks>==
	{{Document Icon}} [[National Engineering Handbook: Chapter 2 - Engineering Geologic Investigations \| National Engineering Handbook: Chapter 2 - Engineering Geologic Investigations, NRCS, 2012]]		{{Document Icon}} [[National Engineering Handbook: Chapter 2 - Engineering Geologic Investigations \| National Engineering Handbook: Chapter 2 - Engineering Geologic Investigations, NRCS, 2012]]
	{{Document Icon}} [[Engineering Geology Field Manual 2nd Edition, Volume 2 \| Engineering Geology Field Manual 2nd Edition, Volume 2 (USBR, 2001)]]		{{Document Icon}} [[Engineering Geology Field Manual 2nd Edition, Volume 2 \| Engineering Geology Field Manual 2nd Edition, Volume 2 (USBR, 2001)]]
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	{{Document Icon}} [[Earth Manual Part 1 \| Earth Manual Part 1 (USBR, 1998)]]		{{Document Icon}} [[Earth Manual Part 1 \| Earth Manual Part 1 (USBR, 1998)]]

	==[[Trainings]]==		==<noautolinks>Trainings</noautolinks>==
	{{Video Icon}} [[On-Demand Webinar: Field Investigations for New and Existing Dams]]		{{Video Icon}} [[On-Demand Webinar: Field Investigations for New and Existing Dams]]

Grichards at 05:26, 18 November 2022

2022-11-18T05:26:39Z

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	__NOTOC__		__NOTOC__
			[[Category:Geotechnical Exploration]]
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Rmanwaring at 22:03, 2 November 2022

2022-11-02T22:03:05Z

← Older revision		Revision as of 22:03, 2 November 2022
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	"In areas where the [[soils]] and geologic conditions are well known, a detailed investigation may not be necessary for small, low-hazard structures. For such structures, the preliminary investigation needs to be sufficiently detailed to provide relevant information on site materials, conditions, and engineering characteristics for planning, design, and cost estimates."<ref name="NEH_CH2" />		"In areas where the [[soils]] and geologic conditions are well known, a detailed investigation may not be necessary for small, low-hazard structures. For such structures, the preliminary investigation needs to be sufficiently detailed to provide relevant information on site materials, conditions, and engineering characteristics for planning, design, and cost estimates."<ref name="NEH_CH2" />

	*[[Purpose of Preliminary Site Investigation]]
	*[[Assembly of Data for Preliminary Site Investigation]]
	*[[Use of Imagery of Preliminary Site Investigation]]
	*[[Field Study for Preliminary Site Investigation]]
	*[[Mapping of Preliminary Site Investigation]]
	*[[Report of Preliminary Investigation]]

	==[[Best Practices Resources]]==		==[[Best Practices Resources]]==
	{{Document Icon}} [[National Engineering Handbook: Chapter 2 - Engineering Geologic Investigations \| National Engineering Handbook: Chapter 2 - Engineering Geologic Investigations, NRCS, 2012]]		{{Document Icon}} [[National Engineering Handbook: Chapter 2 - Engineering Geologic Investigations \| National Engineering Handbook: Chapter 2 - Engineering Geologic Investigations, NRCS, 2012]]
			{{Document Icon}} [[Engineering Geology Field Manual 2nd Edition, Volume 2 \| Engineering Geology Field Manual 2nd Edition, Volume 2 (USBR, 2001)]]
			{{Document Icon}} [[National Engineering Handbook: Chapter 2 - Engineering Geologic Investigations \| National Engineering Handbook: Chapter 2 - Engineering Geologic Investigations (NRCS, 2012)]]
			{{Document Icon}} [[Geophysical Exploration for Engineering and Environmental Investigations (EM 1110-1-1802) \| Geophysical Exploration for Engineering and Environmental Investigations (EM 1110-1-1802) (USACE, 1995)]]
			{{Document Icon}} [[Design of Small Dams \| Design of Small Dams (USBR, 1987)]]
			{{Document Icon}} [[Earth Manual Part 1 \| Earth Manual Part 1 (USBR, 1998)]]

	==[[Trainings]]==		==[[Trainings]]==

Rmanwaring at 17:51, 28 October 2022

2022-10-28T17:51:07Z

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	\|image=		\|image= SoilSurvey.jpg
	<!--Add link if applicable -->		<!--Add link if applicable -->
	\|link=		\|link=
	<!-- Add picture caption -->		<!-- Add picture caption -->
	\|caption=		\|caption= Soil Survey
	}}		}}

← Older revision		Revision as of 05:09, 14 December 2022
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	==<noautolinks>Best Practices Resources</noautolinks>==		==<noautolinks>Best Practices Resources</noautolinks>==
	{{Document Icon}} [[National Engineering Handbook: Chapter 2 - Engineering Geologic Investigations \| National Engineering Handbook: Chapter 2 - Engineering Geologic Investigations, NRCS, 2012]]		{{Document Icon}} [[National Engineering Handbook: Chapter 2 - Engineering Geologic Investigations \| National Engineering Handbook: Chapter 2 - Engineering Geologic Investigations, NRCS, 2012]]
	~~{{Document Icon}} [[Engineering Geology Field Manual 2nd Edition, Volume 2 \| Engineering Geology Field Manual 2nd Edition, Volume 2 (USBR, 2001)]]~~
	{{Document Icon}} [[National Engineering Handbook: Chapter 2 - Engineering Geologic Investigations \| National Engineering Handbook: Chapter 2 - Engineering Geologic Investigations (NRCS, 2012)]]		{{Document Icon}} [[National Engineering Handbook: Chapter 2 - Engineering Geologic Investigations \| National Engineering Handbook: Chapter 2 - Engineering Geologic Investigations (NRCS, 2012)]]
	{{Document Icon}} [[Geophysical Exploration for Engineering and Environmental Investigations (EM 1110-1-1802) \| Geophysical Exploration for Engineering and Environmental Investigations (EM 1110-1-1802) (USACE, 1995)]]		{{Document Icon}} [[Geophysical Exploration for Engineering and Environmental Investigations (EM 1110-1-1802) \| Geophysical Exploration for Engineering and Environmental Investigations (EM 1110-1-1802) (USACE, 1995)]]
	{{Document Icon}} [[Design of Small Dams \| Design of Small Dams (USBR, 1987)]]		{{Document Icon}} [[Design of Small Dams \| Design of Small Dams (USBR, 1987)]]
	~~{{Document Icon}} [[Earth Manual Part 1 \| Earth Manual Part 1 (USBR, 1998)]]~~

	==<noautolinks>Trainings</noautolinks>==		==<noautolinks>Trainings</noautolinks>==