Project No. J09CA009402 of Ordnance and Explosive Waste (OEW), 1.2 Subject Yolo County Airport, formerly Winters-Davis Flight Strip, DERP-FUDS Site No. J09CA009400 (OEW Project No

FINAL - US Amy Corps of Engineers HUNTSVILLE DIVISION

Defense Environmental Restoration Program for

Formerly Used Defense Sites

Ordnance and Explosive Waste Chemical Warfare Materials

ARCHIVES SEARCH REPORT FINDINGS

YOLO COUNTY AIRPORT FORMERLY WINTER-DAVIS FLIGHT STRIP

Yolo County, California

Project No. J09CA009402

March 1995

Prepared by US ARMY CORPS OF ENGINEERS

ST. LOUIS DISTRICT

Section

ORDNANCE AND EXPLOSIVE WASTE CHEMICAL WARFARE MATERIALS

ARCHIVES SEARCH REPORT FOR

YOLO COUNTY AIRPORT (FCIRMERLY WINTERS-DAVIS FLIGHT STRIP)

YOLO COUNTY, CALIFORNIA

DERP-FUDS PROJECT NO. J09CA009402

TABLE OF CONTENTS

Introduction Authority Subject Purpose Scope

Previous Site Investigations Project Inventory Report - Yolo County Airport

(Winters-Davis Flight Strip) Yolo County Airport Master Plan

Site and Site Area Description Location Past Uses Current Uses of Site Demographics of the Area

Physical Characteristics of the Site GeologyIPhysiography Soils Hydrology Weather Ecology

Real Estate DOD Ownership Present Ownership Significant Past Ownership other than DOD

Page

C)EW/C WM Site Analysis Historical Summary of OEW/CWM Activities Records Review Summary of Interviews Site Inspection

1E;valuation of Ordnance Contamination CWh4 Contamination Evaluation CIEW Contamination Evaluation

Location Map Vicinity Map Airport Vicinity Site Plan Current Airport Layout Aerial Photo Interpretation Historic Airport Layout--1975 Historic Real Estate

APPENDICES

REFERENCES ACRONYMS REPOR'I'S/STUDIES/LETTERS/MEMORANDUMS HISTORICAL PHOTOGRAPHS -- NOT USED INTERVIEWS NEWSPAPERSIJOURNALS -- NOT USED PRESENT SITE PHOTOGRAPHS HISTORICAL MAPS/DRAWINGS -- NOT USED RISK ASSESSMENT CODE PROCEDURE FORMS REPORT DISTRIBUTION LIST ARCHIVE ADDRESSES

1.0 Introduction

In 1986, Congress established the Defense Environmental Restoration Program at 10 U.S.C. 2701 et.seq. This program directed the Secretary of Defense to "cany out a program of environmentalrestoration at facilities under the jurisdiction of the Secretary. "

In March, 1990, xhe EPA issued a revised National Contingency Plan. Under 40 C.F.R. 300.120, EPA designated DOD to be the removal response authority for incidents involving DoD mililary weapons and munitions under the jurisdiction, custody and control of DoD.

Since the be-g of thisprogram, the U.S. h y Corps of Engineers has been the agency responsible for environmental restoration at Formerly-Used Defense Sites (FUDS). Since 1990, the U.S.Army Engineering and Suppxt Center, Huntsville, has been the Mandatory Center of Expertise and Design Center for Ordnance and Explosives.

The National Contingency Plan (NCP) was e y the Clean Water Act of 1972. The NCP has been revised and broadened seve then. Its purpose is to provide the organizational structure and procedures s to be taken in response to the presence of hazardous substances, pollutants, taminants at a site. Section 105 of the 1980 CERCLA states that the NCP shall appl response actions taken as a result of CERCLA requirements.

The March 1990 National Oil and Hazardo stances Pollution Contingency Plan given in 40 CFR part 300 is the latest version of th . Paragraph 300.120 states that "DOD will be the removal response authority with incidents involving DOD military weapons and munitions under the jurisdiction, cu and control of DOD."

On April 5 , 1990, U.S. SAEDH) was designated as the USACE Mandatory (MCX) and Design Center for Ordnance and Explosive Waste (OEW). As the and Design Center for OEW, USAEDH is responsible for the desi lementation of all Department of the Army OEW remediations SAEDH also designs and implements OEW remediation programs for e Department of Defense when requested. In cooperation with the Hunt .S. Army Corps of Engineers St. Louis District has been a preparing Archives Search Reports (ASR) for those

suspected of Ordnance and Explosive Waste (OEW),

1.2 Subject

Yolo County Airport, formerly Winters-Davis Flight Strip, DERP-FUDS Site No. J09CA009400 (OEW Project No. J09CA009402) is located 8 miles northwest of downtown Davis, directly east of Winters, and approximately 12 miles southwest of Woodland in Yolo County, California (Figures 1 & 2, and Maps M-1 through M-3). In 1942, the United States acquired approximately 510 acres of land and developed the site as an airfield in support of the west coast World War I1 (WW 11) effort. By the end of October 1943 the Army Engineers had completed construction of the 8000-foot long runway. During the following year an operations tower, five bomb fuze storage magazines and thirteen bomb storage revetments, temporary troop quarters, and various other support facilities were added to the army airfield. The original Site Plan and current Airport Layout are presented on Maps M-4 and M-5,respectively.

The Army Air Corps declared the strip excess in December 1944; and the base became a sub-base of the McClellan Army Air Base (AAB), Sacramento, California on 15 May 1945. It remained with McClellan AAB until its transfer to inactive status on 30 December 1945.

This Archives Search Report compiles information obtained through historical research at various archives and records-holding facilities, interviews with persons associated with the site or its operations, and personal visits to the site. All efforts were directed toward determining the possible: use or disposal of OEW of any type, including CWM, on the FUDS. Emphasis was placed on establishing the type of munitions, containers, quantities, and area of disposal. Information obtained during this process was used in developing recommendations for further actions at the site.

1.4 Scope

This investigation centered on the potential that OEW and/or CWM contamination might remain on the site. The: scope centered on providing the Huntsville Division (CEHND) with information to assist in ;a determination whether or not further study and remedial action was needed. Our study efforts concentrated specifically at the location of the former bomb storage revetment and the fuze storage magazines, including the surrounding area.

This report presents the history of the site, description and characterization of the immediate surrounding area, real estate ownership information, findings of a visual field survey, and OEW site analysis, including an evaluation of potential ordnance contamination. A separate report supplements these ASR FINDINGS and furnishes the CONCLUSIONS and RECOMMENDATIONS.

YOLO COUNTY AIRPORT (W I NTERS-DAV I S FLIGHT STRIP)

YOLO COUNTY, CALIFORNIA DERP-FUDS" J09CA009402

PROJECT LOCATION MAP KIT TO SCALE PR(MCT D I E MARCH 1995 I DATE OF YIP, 1994

21-MAR-1995 OW8 I /n/oew45~D/sh4T/map/yoIoIocCdqn

NOT TO SCALE

FIGURE 2 YOLO COUNTY A IRPORT

( W I N T E R S - D A V I S F L I G H T S T R I P 1 YOLO COUNTY. C A L I F O R N I A DERP-FUDSD J 0 9 C A 0 0 9 4 0 2

V I C I N I T Y MAP PROJECT DATE: MARCH 1995 I DATE OF MAP: X

2.0 Previous Site Investbations

2.1 Pro-iect Inventory Re-port - Yolo County Aimort (Winters-Davis Flight S tr i~ )

By Memorandum dated 26 August 1991, the Commanding Officer, Sacramento District, U.S. Army Corps of Engineers, forwarded the Findings of Fact and Determination of Eligibility (Inventory Project Reput or INPR) on the DERP-FUDS assessment for the Yolo County Airport to the Division Engineer, South Pacific Division. In the INPR it was determined that the site was formerly used by the Army and there is hazardous waste at the site eligible for cleanup under DERP-FUDS. The categories of hazards were listed as CONIHTW and OEW. The Sacramento Commander recommended to the Division Engineer that he approve the Findings and Determination of Eligibility, forward a copy of the INPR to CEMP requesting approval and funds to accomplish the CONIHTW project, and forward the INPR to CEHND with a request for a determination of the need for further study of the bomb storage area.

The Division Commander signed and forwarded the INPR to HQUSACE, CEHND and CEMRD with his recommendation for approval of the proposed CONIHTW project and for CEHND to determine the need for further study and remedial action on the OEW assessment. By Correspondence dated 15 January 1992, the Chief, Environmental Restoration Division, Directorate of Military Programs, concurred with the recommendations of CESPD and authorized the remedial design and remedial action (RDIRA) for the CON/HTW project; and pending a recommendation from CEHND, a decision on the OEW project was to follow at a later date. A copy of the correspondence chain is furnished as Appendix C- 1.

2.2 Yolo County Airport Master Plan

Yolo County, California, prepared a Master Plan for the Yolo County Airport in 1976 and was approved by the Planning Commission on 15 December 1976. The Master Plan and Environmental Impact Statement was adopted on 8 February 1977 by the Board of Supervisors. The plan provided guidelines for future development of the airport and the surrounding area. It was designed to establish the Yolo Airport as one system augmenting other modes of transportation and provide satisfaction for local aviation demands.

The plan presented an inventory of existing facilities; site characteristics; studied the service area; forecasted future uses; and investigated alternatives for the needs based on predictions of the number and type of aircraft to be based at the municipal airport. The document included environmental studies and impacts, the current layout plan, and established a land use plan with schedules of proposed development. Included in the report are cost estimates and the results of financing and economic feasibility studies. Appendix C-9 presents the cover and selected sect.ions of the document.

3.0 Site and Site Area Descri~tion

3.1 Location

Yolo County Airport, consisting of approximately 495 acres, is the main body of a 510 acre tract once known during WW I1 as the Winters-Davis Flight Strip. It is located in Yolo County, California, approximately eight miles northwest of downtown Davis. It lies between county roads 95 and 96 running north\south. The airport is also situated between County

, roads 29 and 31 which run east\west (Figures 1 & 2 and Maps M-1 through M-3 ). According to historical information, the approximate center of the area is at Latitude 38"-34'-38" and Longitude 121 "-15 1'-20". The site occupies a portion of Section 3, Township 8 North, Range 1 East, and a portion of Section 34, Township 9 North, Range 1 East.

3.2 Past Uses

Before 1942, the site was used primarily for the production of livestock and grain until acquired by the Federal government. The major block of property belonged to local owners, but a second tract was acquired from the Public Roads Administration. A portion of a 160-acre tract was reserved by the owner as a farmstead. The owner leased a portion of this tract out for agricultural purposes (War Assets Administration, 1945). Map M-8 is the acquisition map that furnishes the original Historical Real Estate Transactions.

3.2.1 General History

In 1942, the United States acquired approximately 510 acres of land between the towns of Winters and Davis, California for use as an airfield. Initial construction began on 20 July 1942 and was completed on 29 October 1942. This phase completed the runway to the dimensions of 8,000 k t long by 300 feet wide. The Army Engineers surfaced 4,000 feet of this runway (Yolo County Planning Board, 1976). Additional construction in 1943 included an operations tower, five bomb fuze storage magazines, and thirteen bomb storage revetments. They also installed tanks for 50,000 gallons of aviation fuel, temporary troop quarters and various other facilities (Backes, 1944).

Initially the Winters-Davis Flight Strip fell under the jurisdiction of the 45th Air Base Group at Hamilton Army Air Base (Hamilton Field), San Rafael, California . Although the Army determined that the field would serve as a medium bomber base, Hamilton Field used the flight strip as a training sub-base for P-38 pilots of the 78th pursuit Group and P-39 pilots of the 328th Fighter Group (U.S.Army Air Corps (USAAC), March 1944) (Hedger, 1943). The INPR does not address the usage by Hamilton AAB during the early years. It only discusses the strip being used to provide alternate basing for B-25's normally located at McClellan AAB. Winters-Davis Flight Strip was established as an auxiliary landing field for Hamilton AAB in case the Japanese bombed the west coast communities and\or defense facilities in an air attack (War Assets Administration, 1945).

On 15 July, 1944, jurisdiction of the flight strip fell to the Western Flying Training Command (WFTC) which continued the P-38 and P-39 training. Administration of the base became the duty of Mather Army Air Base (AAB), Sacramento, California. The WFTC then transferred these responsibilities to the Stockton Army Air Field, Stockton, California in November 1944. The Army Air Corps declared the strip excess on 15 December 1944. Finally, the base became a sub-base of the McClellan AAB, Sacramento, California on 15 May 1945. It remained with McClellan Field until its transfer to inactive status under the War Assets Administration on December 30, 1945 (USAAC, 1944) (Pyle, 1944) (Mueller, 1982).

3.2.2 Interpretation of' Aerial Photography

a. Photoanalysis and land use interpretation were done using the following listed photography:

Photography Date Scale

Identifier (s) Source Frame (s)

4 Jun 1952 Oblique National *3LHH and 4LHH Archives

19 Sep 1952 lW=1167' National *35LS, 36LS, Archives 37LS, 35RS,

36RS, 37RS

17 Sep 1952 1" = 1667' ASCS and

22 Oct 1952

2K-153 t h r ~ 158, and

5K-52 thm 58

18 Jun 1964 1" = 1667' ASCS 3EE-35 thru 41, 3EE-44 thru 50

11 May 1971 1" = 1667' ASCS 1MM-90 t h r ~ 96, 1MM-142 thru 148

19 Feb 1991 1" =20()' Geonex 51-24 thm 26

*Photos dated 4 June :I952 and 19 Sep 1952 cover vicinity of the site but not the site. Photos dated 19 September are 9" x 18" photos each in two parts with one part marked and the other not marked.

b. Photography cited above covering the Yolo County Airport FUDS was examined. Features of interest seen on the photography are shown on Map M-6. The 17 September 1952 photography is used as a base for the map.

c. Terrain in the vicinity of the site is flat to gently rolling. Natural surface drainage is poorly developed. However, several natural channels in the area have been improved by excavation so that drainage pattern is prominent. Flow of streams is intermittent. Land use is mainly agriculture with some residential development. Davis, a city of about 46,000 people, is located about five miles southeast of the site. The secondary road network is well developed in the vicinity. North-South freeways are located about five miles east and about seven miles west of the site.

3.2.3 MID Analvsis

The site was analyzed using the following maps:

a. USGS 7.5 minute quadrangle map sheets: MERRITI', CALIF., 1952; MERRI'IT,CALIF., 1952, photorevised 1968; MERRI?T, CALIF., 1952, photorevised 1968 and 1975; MERRITT, CALIF., 1952, photorevised 1981.

b. Drawings 1 arid 2, Military Construction, Winters-Davis Flight Strip Near Davis California, US. Engineer Office, Sacramento, California, December 1943.

Review of the above cited USGS map sheets confirms general description of terrain and land use given in paragraph 3.2.2~ above. Also, they were useful in finding the site on the aerial photography. The drawings cited above were useful in identifying features on the aerial photography.

3.3 Current Uses of Site

In 1949, the former Winters-Davis Flight Strip was placed under the administrative control of Yolo County and they named the airfield the Yolo County International Airport. The airport remained vacant until sometime during the 1960's. During this period a walnut shell husking operation was one farming activity that occurred on the property. In 1971, the county resurfaced part of the original runway. In August 1974, Yolo Aviation Inc. leased 14.9 acres of the airport and constructed 20 hangars and other facilities. Small aircraft and local cropdusting planes started using the field during this period. These entities continue flying operations out of Yolo County Airport to the present day. The main uses include touch-and--go operations for instructional purposes; parachute jumping; leisure or private travel; crop dusting; a sportsman range; and farming is ongoing on the unimproved land. (Yolo County Planning Ibard, 1976) (Wiswell, 1995). The current airport layout is furnished as Map M-5 and the layout for the airport in 1975 is shown in Map M-7.

3.4 Demoera~hics of the Area

3.4.1 Center of Activity

The Yolo County Airport is located about eight miles west-northwest of the downtown business district of the City of Davis, Yolo County, California.

3.4.2 Po~ulation Densitv

City: Davis County: Yolo Area: 8.4 sq. mi. Area : 1,014 sq. mi. Pop.: 46,209 Pop. : 141,092 PI) : 5,501 persons per sq. mi. PD : 139 persons per sq. mi.

3.4.3 T m s of Businesses

The largest activity in the Davis area is the University of California-Davis including a medical center. There is also some manufacturing -- foods and aircraft. Also, a genetic research center and the USACE Hydrologic Engineering Center (HEC) are located at Davis. Of the people in Yolo County employed by businesses, about 27 percent are employed by retail trade businesses. Also prominent are service businesses at about 24 percent, as well as manufacturing businesses at about 14 percent, and wholesale trade businesses at about 13 percent. Foregoing percentages are at mid-March 1990.

3.4.4. Types of Housing

Housing in Davis is composed of both single family and multi-family dwellings.

3.4.5 New Develo~ment in the Area

The main new development in the Davis area is housing.

3.4.6 Qvical Cross Sections of the Po~ulation

Approximately 79.8 % of the population of Davis is white, 3.0% black, 0.7% American Indian, Eskimo or Aleut, 13.2 % Asian or Pacific Islander, and 3.3 % other races. The percent (of the total population (of any race) that is of Hispanic origin is 7.4%. The part of the population under the age of 18 is 16.62, and the part over the age of 65 is 6.2%. The median :age is 25.5 years. The median value of 6,444 specified owner-occupied housing units in Davis is $191:,300.00. The number of business establishments in Yolo county can be broken down by type as follows, manufacturing 5.3 % ; agriculture 2.2 % ; services 3 1.2 % ; trade and financial 4 1.1 % ; and other 20.2 % .

4.0 m s i c a l Characteristics of the site

The Yolo County Airport site is located within the Sacramento Valley Subregion of the Central Valley of California Section of the Pacific Border province. The Central Valley is a major northwest trending, southerly tilting, structural trough, asymmetrical in form with a steep western flank and a more gently inclined eastern flank. The northern third is known as the Sacramento Valley, the southern two-thirds is the San Joaquin Valley (Thornbury 1965). Up to ten miles of sediments have filled the Sacramento Valley and range in age from Jurassic to Holocene and include marine and continental rocks and deposits. This trough has probabhy existed since the Jurassic, when the Sierra Nevada and Klamath Mountains were uplifted. During the Cretaceous and through much of the Cenozoic, this trough extended westward over the site of the present Coast Ranges and may have received sediment from the Sierra Nevada on the east. The trough existed in this form until the late Pliocene when development of the Coast Ranges cut off the sea.

The most recent deposits are of Holocene to Oligocene age. River deposits (Holocene), of gravel, sand, silts and minor amounts of clay deposited along channels and floodplains may include parts of the M:odesto Formation of Pleistocene age; Continental deposits (Oligocene to Holocene), are a hderogenous mix of gravels, sand, silts and clay with some cobbles, boulders and some conglomerates. The more recent deposits are underlain mostly by marine deposits of clay, shale,, siltstone, and sandstone of pre-Tertiary to Eocene age (Page 1986).

4.2 Soils

The majority of the undisturbed soils on the Yolo County Airport site are described by the profile in Table 4-1. The soils are nearly level, well-drained soils on alluvial fans. They were farmed in mixed alluvium derived from sedimentary rocks. The surface layer is usually dark grayish-brown and the substratum is brown. Erosion on these soils is only a slight hazard, and the corrosive effects of the soil on uncoated steel is moderate in the surface layers and low in the substratum (Bates 1977).

Table 4-1. Soil Profile

F a b l e modified from Soil Survey of Solano County, Ca.

AVL. PERCENTAGE PASSING (in)

0-36

36-60

--

PERM. DES ClRIPTION

silty clay

silty sandy clay

SIEVE NUMBER inlhr

0.2-0.63

0.63-2.0

WATER CAP. inlin

0.19- 0.21

0.16- 0.18

#200

85-95

65-75

- -

#4

100

100

#40

95-100

85-95

4.3 Hydrology

4.3.1 Surface Water

The Yola County Airport site is located in the Sacramento River Valley of Centd California, about 20 miles west of Sacramento and 70 miles northeast of San Francisco. Site elevations vary fiom about elevation 70-100 NGVD (Net Geodetic Vertical Datum), with the site of the airport proper generally from elevation 85-100 NGVD. The site, and the entire Sacramento River Valley, is protected by an extensive system of levees, diversions, and flood control reservoirs constructed by the Corps of Engineers and the State of California. In addition, the site is 30-40 feet higher than elevations along the Sacramento River and the possibility of direct flooding by the Sacramento is so remote as to be negligible. One stream, Dry Slough, flows east across the southern portion of the site and then turns northeast as it exits the site boundary. This stream enters Willow Slough, which flows east and eventually reaches the Sacramento River. Airport site drainage is by overland flow, from west to east, to Dry Slough. Flood elevations along Dry Slough are significantly lower than elevations of the Yolo County Airport. During flood conditions, overflow from Dry Slough would generally flow east, away from the Yolo County Airport site. The likelihood of any flooding of the airport site appears remote.

No hydrologic information exists for Dry or Willow Sloughs.

4.3.2 Ground Water

Post-Eocene continental deposits constitute the primary groundwater reservoir in the Sacramento Valley. The thickness of these deposits averages about 2,400 feet and increases from north to south. Natural ground water flow has been greatly altered by groundwater development and pumpage and is generally towards large withdrawal areas although there is still a large component of flow towards the Delta area. Recharge is from streams entering the valley from the Sierra Nevadas but has been increased from irrigation returns. The average hydraulic conductivity is 6.94~10 ft/s (Williamson, Prudic, and Swain 1989).

4.4 Weather

The area has a mild climate with abundant sunshine from spring through much of the fall. The bulk of the precipitation occurs during the winter months, but is not a daily occurrence. Records for the City of Sacramento show measurable rainfall occurring about nine days per month during the winter. Winter rainfall results from long duration, low intensity cyclonic storms moving inland from the Pacific Ocean. Thunderstorms are quite unusual. The summers are very dry with essentially no rainfall from about May through September. Unless significant reservoir storage exists in a given watershed, a stream may go dry during the summer and fall periods.

Summer temperatures can be severe, with the record high being 115% occurring in June 1961. Temperatures well in excess of l O f l occur frequently during the summer months. However, these high temperatures are largely offset by relative humidities generally less than 20% and by afternoon ocean breezes from the Pacific Ocean, which flow through the Golden

Gate and up the Sacramento Valley. This air circulation creates a significant diurnal change in daily temperatures at the site. Drops in temperature from over lOO!F into the 50's from mid-afternoon to late evening are not unusual in the summertime. Winter temperatures are mild, with the lowest temperatures seldom far below freezing. The record low temperature for the area is 1 8 9 occurring in December 1990.

Winds irn the valley vary from about 6-9 miles per hour through the year and are from the south throughout the year except for November, when winds are from the north. The strongest wind activity occurs in the spring and fall, when a strong high pressure system forms over Northern California. Air flow passes over the northern mountains and, after descending, can give rise to periodic strong, gusty Chinook-type winds from the north. Maximum wind gusts of 65-70 miles per hour have been recorded during the months of April and October through December. Climatological data for the area are summarized in TABLE 4-2.

TABLE 4-2 CLIMATOLOGICAL DATA FOR YOLO COUNTY AIRPORT, CALIFORNIA

Temperature (F) Wind

Velocity

(mph)

7.2

Wind Direction

SSE

SSW

SW

SW

SW

NNW

SSE

Source: NOAA 1991. Local Climatological Data (temperaturelwind) of Sacramento, California. NCDC, 1993. Precipitation Data for Davis, California.

SW 7.9 16.79 60.6 73.4 Annual 47.8

The information provided for this site was compiled from the U.S. Fish and Wildlife Service (USFWS) and the California Department of Fish and Game Natural Diversity Data Base (NDDB).

The following Federally endangered, threatened, or candidate species occur in the vicinity of the Yolo County Airport Site: winter-run chinook salmon (Oncorhvnchus tshawvtscha), endangered; Sacramento splittail (Pogonichthvs macrole~idotusj, proposed threatened; green sturgeon (Aci-penser medirostris), candidate; vernal pool tadpole shrimp (Lqidurus packardi) , endangered; conservancy fairy shrimp (Branchinecta conservatio) , endangered; valley elderberry longhorn beetle (Desmocerus californicus dimorphus), threatened; vernal pool f a r shrimp (Branchinecta lynchi), threatened; California red-legged hog (Rana aurora dravtoniij, proposed endangered; California tiger salamander (Ambystoma californiense), candidate; western spadefoot toad (Sca~hiopus hammondi hammondi), candidate; foothill yellow-legged frog (Rana bovlii), candidate; northwestern pond turtle (Clemmvs marmorata marmorataJ, candidate; southwestern pond turtle (Clemmys marmorata pallida), candidate; Pacific western big-eared bat (plecotus townsendii townsendii), candidate; greater western mastiff bat ( E U ~ O D S ~erotis californicus), candidate; riparian brush rabbit (Sylvilagus bachmank riparius), candidate; spotted bat (Euderma maculatum), candidate; alkali milk-vetch (Astragalus tener var. tener), candidate; and brittlescale (Atriplex depressa), candidate.

The NDIlB listed the State threatened Swainsons hawk (F3uteo swainsoni) and the threatened giant garter snake (Thamno~his gigas) as the only species of state concern that occur in the vicinity of the Y olo County Airport Site.

No additional information on the occurrence of rare or endangered species or natural communities is known at this time. This does not mean that other state or federally-listed species may not be present within the areas of interest. An on site inspection by appropriate state and federal personnel may be necessary to verify the presence, absence or location of listed spxies, or natural communities if remedial action is recommended as part of the final ASR.

5.0 Real Estate

By use permit from the: U. S. Public Roads Administration, dated 3 Novovember 1943, 201.58 acres were transferred to the War Department. An additional 308.57 acres in total were acquired by the War Department by Declaration of Taking between 1942 and 1943, for a total 510.15 acres (Map M-8). According to the INPR, the site was used as a flight strip to provide alternate basing for B25 aircraft normally located at McClellan Air Force Base.

The use permit for 201.58 acres was relinquished to the Public Roads Administration (PRA) on 12 April 1946. The remaining 308.57 acres transferred to the War Assets administration (WAA) on 21 September 1946. Subsequently, a total of 294.4 acres were transferred by quitclaim deed from the WAA on 14 June 1948, along with the 201.58 acres from the PRA, to the County of Yolo for use as an airport. The remaining 14.17 acres from the WAA reverted to the original, owners, Mr. and Mrs. Thomas E. Teardon. The quitclaim deed includes a recapture clause.

The 495.98 acre site is currently owned by the County of Yolo and utilized as the Yolo County Airport. The 14.17 acre portion of the site is presently owned by St. Mary's College and used for agriculture. Presently Yolo County is leasing the land for many differenlt purposes. These include using the property for aircraft schools; a parachute club and jumping school; crop dusting companies; and leisure and private travel. In addition, the Yolo Sportsman Association uses land for a trap shoot, 50-yard pistol range, 100-yard rifle range, and an archery range along with associated facilities. The county leases the rest of the unimproved land for farming.

5.3 Sigpificant Past owners hi^ Other than DOD

The only significant past ownership is Yolo County, which leases land for the previously mentioned land usages. Documents were not clear on the reasons for early ownership by the PRA.

6.0 OEWICWM Site Anallvsis

6.1 Historical Analvsis of OEWICWM Activities

Research indicates that the Army Air Corps used the field as a Western Flying Training Command sub-installation during the 15 months of flying operations during WW LT. Historical documents indicate the site was to provide alternate basing for B25 aircraft normally located at McClellan Field. A 28 July 1992 memorandum of a Site Board Meeting stated "the intended military purpose was as a medium Bombardment field for the Fourth Air Force with facilities for housing and servicing one squadron". During February 1943, planning for construction of a bomb storage facility at the facility was approved by the Fourth Army Air Force. The airstrip was to be sufficient for 12 Heavy or 16 Medium Bombers. P-38 and P--39 aircraft were temporarily stationed at the base. Ordnance associated with these aircraft and possibly stored include .50 caliber ammunition, smoke and training ordnance (US AAC , 1944).

6.1.1 QEW Activities,

The Army Engineers built the bomb storage area with the basing of bomber aircraft in mind. The Engineers constructed 13 Bomb Storage Revetments and 5 Bomb Fuze Storage Magazines for this purpose. The actual mission changed to training fighter pilots and the ordnance materials stored are believed to have changed, with all HE munitions transferred to areas where they would be put to use. The fact that the base was used as an auxiliary landing field for various bases also suggests that there may have been temporary storage of bombs 'and other ordnance. Although probably an isolated incident, the fact that a smoke device was found on a farm south of the airport suggests that other ordnance items could have fallen off the aircraft flying in and out of Winters-Davis Flight Strip. Airfield histories and other documents collected during this archives research did not indicate any permanent storage of ordnance items, nor do they indicate official disposition of stored ordnance. Temporary storage certainly included items normally carried during pilot training for P-38 and P-39 aircraft; and it is known that miniature practice bombs (blue paint) were reported as being found in the area of the bomb storage. Air units were not permanently stationed at the flight strip. They conducted firing and other ordnance training on their home field ranges. The available records did not indicate that while the property was under DOD control it was ever used as a rifle, skeet or any other type of range (U.S. Amy Corps of Engineers, INPR, 195) 1) (USAAC, 1944).

6.1.2 (CWM Activities.

Building lists do not show the construction of any chemical warfare training or storage facilities. Since the units using the strip were stationed at other air bases, home base facilities were likely used for chemical warfare training (U.S. Army Corps of Engineers, INFR, 1991) (USAAC, 1944). No chemical identification kit information exists for the Winters-Davis Flight Strip in the report of controlled equipment items, February 1945.

6.2 Records Review

St. Louis District Corps of Engineer personnel reviewed records concerning the history of the Yolo County Airport\Winters-Davis Flight Strip at the following locations.

National Pecsonnel Records Center Military Records 9700 Page Avenue

St. Louis, MO 63132

The following Accessions were reviewed.

342-54D-6075, Box 1 of 1, WinternDavis Flight Strip 338-46A-,3034, Stockton Army Air Field 338-46B-3034, Stockton Army Air Field 338-53F-5038, McClellan Army Air Base 338-54D-6075, Mather Army Air Base 338-54E-6075, Mather Army Air Base 338-54F-6075, Mather Army Air Base

National Archives 8th and Pennsylvania

Washington, D.C. 20408

Records were reviewed from RG 18, Records of the Army Air Forces; RG 153, Records of the Judge Advocate General and RG 407, Records of the Army Advocate General. The following applicable boxes were reviewed:

RG 18 Records of the Army Air Forces, Central Decimal Files Box 1598, Windsor Locks to Worcester, MA (Winters-Davis Flight Strip)

RG 153 :Records of the Judge Advocate General, Reservation File Box 98, California, Yerba Linda to Camp Young (No Yolo Co.)

National Archives-Suitland Branch 4205 Suitland Road Suitland, MD 20409

The archivists researched Record Group (RG) 77, Records of the Chief of Engineers, RG 175, Records of the Chemical Warfare Service, RG 341, Records of Headquarters, USAF, and RG 342, Records of the US. Air Force Commands. They also checked RG 72, Records of the Bureau of Aeronautics, RG 107, Office of the Secretary of War, RG 156, Records of the Chief of Ordnance, and RG 18, Records of the Army Air Forces. The following applicable records were reviewed:

NARA:

RG 77, Records of the U. S. Army Corps of Engineers Entry 393, Records of Buildings, Box 286, Willock, PA to Wolf Creek Ord.

(Winters-Davis Flight Strip) Bulky Files, Airfields, Construction Reports, 1917-1943

RG 175, Records of the Chemical Warfare Service Entry 2, Index Card Briefs, Boxes 64, 126, 350 and 525 Entry 67A4900 Station Files, The Archivists could not find without listing

RG 291, Records of the GSA Property Disposal Acc. # 68-A-5714, Box 58, Downey, CA to Yolo, CA (Ventura + Yolo Co., CA)

RG 338 Records of the U. S. Army Command Boxes 1-4,Sth Army Bomb Reports (No Help Overseas areas)

National Archives And Records Administration. College Park Branch 8601 Adelphi Road

College Park, MD 20740

This facility was still in the process of transferring records and little information was found related to the subject Yolo County A i i r t FUDS. We researched Record Group (RG) 237! Records of the Civil Aeronautics Administration and looked at three boxes of material. There were no records found for Winters-Davis F w t Strip or Yolo County Airport.

Chemical and Biological Defense Agency Historical Office CBDA/HO

Aberdeen Proving Ground Edgewood, MD 21010

Records on Air Chemical Units was reviewed. A 1945 Chemical Equipment Listing was also reviewed. There were no records found for Winters-Davis Flight Strip or Yolo County Airport.

National Archives And Records Administration. And Federal Records Center

1000 Commodore Drive San Bruno, CA 94066

The following record groups were researched for applicable information: RG 18 Records of the Army Air Forces, RG 77 U. S. Army Corps of Engineers, RG 92 Records of the Quartermaster General, RG 121 Records of the Public Building Service, RG 269 Records of the Farm Credit Property Disposal, RG 270 Records of the War Assets Administration and RG 291 GSA Property Disposal. The following record groups and boxes were reviewed:

RG 121 Records of the Public Building Service Box 30, Winter Army Airfield (No Help) Box 35, Winters-Davis Flight Strip

RG 270 Records of the War Assets Administration Box 146, Winter Army Airfield (No Help) Box 147, Winters-Davis Flight Strip

The RG 77 map files finding aid for those maps transferred from the records center side was also researched.

U. S. Air Force Historical Center Bldg. 1405, Chennault Circle

Maxwell AFB, AL. 36112

The following applicable records were reviewed:

USAF Histories:

224.01, Western Flying Training Command (Winters-Davis?) 224.603 to 224.740, Western Flying Training Command (Winters-Davis?) 224.06 to 224.283, Western Flying Training Command (Winters-Davis?) 224.740 to 225.0 1, Western Flying Training Command (Witers-Davis?) 260.277 Airfield Directory of the Continental U.S. 283.81-10 to 284.04-2, 46th AB Squadron, Hamilton AAB (Admin. Winters-Davis) 284.04-;!A to 284.04-3A, 46th AB Squadron, Hamilton AAB (Admin. Winters-Davis)

U. S. Army Corps of :Engineers Records

RG 77, Acc # A-5 1-59, Box 472, Windham - Winterport (Winters-Davis F.S.)

Sacramento History Center Sacramento, CA 95814

(916) 447-2958

The Sacramento History Center had moved from its old location. The Curator was contacted by telephone, and the Curator informed the archival search team that there was not any information regarding Yolo County Airport or the former Winters-Davis Flight Strip.

California State Library California Section

9th and Capitol Mall Sacramento, CA 95809

The team then reviewed the following applicable documents:

F 869 W55.W5 "Winters, CA Centennial Supplement to Winters Express Newspaper, May 22, 1975.

C 979.45 1. W5 "History of Eastern Yolo Co., CAW by Broderick W. Sacto-Bryte, ca. 1945.

F 869 D3.L3 "History of Davis, CAW by Joanne Leach Larkey, published by the Davis Historical and Landmarks Commission, 1968.

California State Archives 201 N. Sunrise Ave., Roseville, CA

A review of the Archives brochure revealed no worthwhile document areas to review.

University of California, Berkeley Main Library

Berkeley, CA 94704

No documents were found for review at this facility. The map library was closed for renovations.

University of California, Berkeley Bancroft Library

Berkeley, CA 94704

The following pertinent documents were reviewed:

Pamphlets on Yolo Co., CA, Decimal # F868.Y5.P18; "Yolo Co., Land of Changing Patterns" by Joanne Larkey, Decimal # F868.Y5.L371 1987

Sacramento Public Library Sacramento, CA 95809

The team found no information at this facility on the site.

University of California, Sacramento Main Library

Sacramento, CA 95809

The following document was found:

TL 725.JP5 S2 c.2 "Regional Plan, Aviation Plan + Program of the Sacramento Regional Airports" by the Sacramento Regional Area Planning Commission, July 1974.

No applicable maps were found in the map library.

Woodland Public Library Woodland, CA 95695

There was no useful information at this facility on the site.

University of California, Davis Main Library

Davis, CA 95616

The following document was reviewed:

DOC - CA H990.Y66 1988 "Hazardous Waste Sites in Yolo Co. CAW by Tracie L. Billington, 1988

There were not applicable maps in the map library on the site.

Yo10 County Public Library Davis, CA 95616

There was no useful information found on the site.

Yolo County Archives Woodland, CA 95695

The archivist for this facility did not find any information on the site.

Y olo County Planning Department Woodland, CA 95695

The department head found and furnished two maps of the airport, and the report.

" 1976 Y'olo County Airport Master Plan, Yolo County, CA" by the Yolo County Planning Board, 1.976.

6.3 Surnrnarv of Interviews.

Interviews have been held with a number of individuals who are familiar with past operations at the Yolo County Airport. Appendix E contains all conversation records of interviews. The following individuals furnished remarks pertinent to potential OEW.

Austin Wiswell Yolo County Airport Manager Winters, CA Office: 625 Court Strext, Room 203 Woodland, CA 95695 (916) 666-8129

Mr. Wiswell has held the airport manager position for the past 3+ years. He stated the airport was mainly vacant until sometime during the 1960's. Since then the airport has been used by private small aircraft and local cropdusters. To his knowledge there have not been any incidents reported involving munitions at the airport. The County does not have original mapping of the field. He suggested that Mr. Duane Chamberlain, who has farmed the unimproved property on the airport, including the former bomb storage area, since the early 1980's, should be a good contact. His phone number is (916) 662-2620. Mr. Wiswell stated the best site map is available from the Sacramento District, Corps of Engineers office. He was aware of past investigations by the Corps.

His perception of the ordnance history from the perspective of a fighter pilot of 23 years is as follows: The field was established in mid-to-late 1942 in response to the threat of a Japanese attack. Many airfields up and down the coast came into existence at the same time. These were "Dispersal .BasesM in the early WW I1 period; and thus, the flight strip had a very irregular pattern of hard stand, making the facility very hard to hit if under attack. Shortly a:fter it was bui1.t (some 3 -6 months later), because of the U. S. success in the Pacific, the threat of attack ceased and Yolo became a base training for B25 Marshall Bombers. Useful live ordnance stored was transferred to areas where it would be put to good use,, according to :Mr. Wiswell. He speculated that practice bombs with spotting charges were loaded at Winters-Davis Flight Strip, and were then dropped on nearby ranges. He, however, had no records of the range locations. Live HE ordnance was, in his belief, "No longer Present" at the airfield.

Mr. Ron Marley Caretaker Yolo Cou.nty Airport (916) 756-0120

Ron Marley had previously been contacted by personnel from the Sacramento District and the Environmental Department of McClellan AFB. He had discussed Environmental Hazards at Yolo Airport with these agencies and the conversation(s) can be found in backup information to the INPR filed at Sacramento District.

One item related to potential OEW contamination, mentioned in records of conversations, various data bases, and other information is that a smoke device (OEW) was found on a farm south of the field and subsequently destroyed by the county. Present discussions centered on this past incident; and his specific experience on the airport proper as caretaker.

Ron served in the EOD and, thus, is a good source of knowledge of munitions for his employer. He has stated there are a lot of "rumors about the bomb storage area". However, there has never been anv dangerous ordnance found in the area. The field has been dry farmed, and there is a possibility that ordnance could have been dumped there. (In the past he has suggested to environmental officials that perhaps infrared remote sensing or some other technique(s) could be used to verify no OEW remains.

Relative to the incident of a smoke bomb being found in the field south of the airport, he related that a rancher located the practice bomb that surfaced in his field after a 3 to 4 month period of rain, similar to what has been happening lately in California. The device had a

white phosphorous content. He was fairly specific that the practice munition probably accidently detached from a WW I1 airplane. He mentioned about a 25 lb. spotting charge was associated with the device and that; because of his past EOD experience, he assisted the county with cleaning up the munition. Pilots flying from Winters-Davis Flight Strip dropped practice bombs with spotting charges, but he had no idea where the practice ranges were located.

Other items mentioned by Mr. Marley: During the mid-1980s some concrete debris was busted u p The sheriffs office had practiced with Smoke and Tear Gas on the airport property, but this is unrelated to DOD use of the land during WW 11.

Mr. Duane Chamberlain Residence and Business Office 34530 County Road 29 Yolo County, CA (916) 662-2620

Mr. Chamberlain was contacted at his home and business office located at 34530 County Road 29, which is about 1 mile west of the N/W corner of airport property. The following are the recollections of the conversation with Mr. Duane Chamberlain. Mr. Chamberlain indicated a long time in the past (20+ years), while farming, he tilled-up what he thought were b1u.e practice bombs. He described these items as being about 5 to 6 inches long, with fins, and about 2-1/2 inches in diameter. He briefly searched around his office for a souvenir, but was unable to find one. Based on his description, Mr. Scott Barton and Mr. William K. James, QASAS personnel with the St. Louis Distict, U.S. Army Corps of Engineers, decided that Mr. Chamberlain might be describing a miniature practice bomb such as lone of the bombs identified in the Miniature 3-pound Mk 3, Mk 4, AN-Mk 5, and AN-Mk 23; or 4.5 pound AN-Mk 43 series Figure 3). He stated not much evidence remains of the facilities that were once part of the old Winters-Davis Flight Strip. During farming operations his employees still occasionally turn up concrete chucks and they have been instructed to bury them deeper beneath the surface. There was also some debris and junk piled into a number of concrete pits adjacent to taxiways. He speculated that there might be something left in these pits. At the Southeast comer (old bomb storage area) he mentioned there was once an oil road, but his employees broke up the road materials and spread them around with not much being left. He also mentioned that near the Fire Department facility, some concrete chunks remain piled up, and tunnels run beneath the taxiways and runway.

The foll.owing individuals participated in the site investigations on the above referenced sites.

Mr. Scott A. Barton Mr. William K. James Mr. Gerald V. Schwalbe

On Monday 13 February 1995, Messrs. Barton and James flew from St. Louis, MO to Sacramen to, CA., arriving at approximately 1245 hours Pacific Standard time. Mr. Schwalbe, who had been on leave, picked them up at the airport. The team then drove through Woodland and then past the Yolo County Airport, where they briefly viewed the facility prior to the site visit scheduled for the following day. They also spent a brief period attempting to reach Mr. Duane Chamberlain, who farms the available land on the airport ground, but were unsuccessful. They next proceeded to Davis California, where they registered at the Rarnada Inn motel and remained overnight.

An appointment had been made for early the following day, Tuesday 14 February, to meet with Mr. Wiswell, Manager, Yolo County Airport, who would escort the survey team about the airport grounds. After introductions of Messrs. Barton and James, the team conducted the site survey. Mr Wiswell first escorted the team to the far south side of the airport where they survleyed the former bomb/ammunition storage area. This location was found to be partially in crops and partially unimproved ground. The crop area was extremely muddy, but the unimproved ground was surveyed and photographs were taken of the site. Although no evidence was found of OEW scrap in the area, Kirk James did find hollow-filled tile, the material commonly used in ammunition storage structure construction. The survey team was escorted to the north side of the airport and observed and photographed the property used by the gun club. By 0930 hours the team had covered the areas of interest. Mr. Wiswell then left for another meeting. He provided directions to Mr. Chamberlain's residence, and it was understood that after contacting Mr. Chamberlain, the team might return again for further inspections. Mr. Chamberlain has farmed the unimproved airport property for many years.

The team drove to Mr. Chamberlain's home and business office located at 34530 County Road 29, which is about 1 mile west of the N/W corner of the airport property. The recollections of the conversation with Duane Chamberlain are furnished in paragraph 6.3 above. After interviewing Mr. Chamberlain, the site survey team accompanied him to view the various features described at Yolo Airport. At various places, the team examined structures and took additional photographs. The pits held connection points for former water supply lines used in fire control. Entrapped surface water, junk, and other debris were evident in these reinforced concrete pits. However, nothing of an OEW nature was observed by the survey team. The tunnels beneath the pavement structures were found to be old drainage structures and concrete wing walls. Mr. Chamberlain drove to the area of the old bunkers that earlier had been viewed with Mr. Wiswell. Map M-4, Site Plan, shows the locations visited and positions of current condition photographs can be found in Appendix G of the ASR report.

No evidence of ordnance and explosive waste (OEW) was found in the former ammunition storage area or anywhere elsewhere on the FUDS property. Around noon on Tuesday, 14 February 1995, after finishing the investigations at the Yolo County Airport, the survey team drove to Fresno, California to prepare for the investigations to be held at the Mt. Campbell Rifle Range FUDS.

BOMB BODY

TAIL

FIRING PIN

FIRING BIN CUP

Miniaftlrc 3-pound Mk 3, Mk 4, AN-MkS, and A N 4 k 23; and 4.5-pound A t W 43

Over-all length, inches. .............. -825 Diameter, inches ..................... 2-18 k l a r ....-.................... UnipainM

These sd8, cast-alloy bombs have a tube ~ i o ~ l g their langitudinat x i s which houses khe Sigd Cartridge AH-Mk 4 or hik 5, a pym- ted-mjc charge for spotting purposes. Tfre dif- ferences bebeeween these bombs are matters of size. The Miniature Practice Bomh AN-Mk 43 weighs 4-5 pounds; the others of this series weigh 3.8 pounds.

YOLO COUNTY AIRPORT ( W INTER-DAVIS FLIGHT STRIP)

YOLO COUNTY. CALIFORNIA DERP-FUDSD J09CA009402

PRACT ICE BOMB PROJECT OATG MARCH 1995 ( DATE OF MAPt 1994

21-MAR-1935 08:Zi I /n/oeu95ob/sh47/map/mlnlbomb.dgn & .d

7.0 Site Evaluation

7.1 B M Contamination Evaluation

With reference to paragraph 6.1.2, CWM training was not shown to have been conducted on the Winters-Davis Flight Strip. No documentation exists of the presence of CWM training facilities or materials present at this FUDS. All CWM training of personnel is assumed to have occurred at the a i r base which the flight strip was assigned to by the Army Air Corps.

7.2 W W Contamination Evaluation

With reference to paragraph 6.1.1, archival research verified that small arms ammunition, miniature practice bombs, and perhaps other HE munitions were stored at the Yolo County Airport, formerly Winters-Davis Flight Strip, DERP-FUDS Site No. J09CA009400 (OEW Project No. J09CA009402). Thirteen (13) Bomb Storage Revetments and five (5) Bomb Fuze Storage Magazines were constructed near the south flight strip boundary. None of the HE ordnance that may have been stored was shown to have been fired at, or dropped nearby, the field (although one smoke device was recovered from a farm south of the field).

Reliable reports indicate small/miniature practice bombs have been recovered during ground tilling operations idnear the area of the Bomb Storage Revetments. None have been uncovered in the last 15 +/- years.

Based upon the evidence presented in this ASR, the potential for OEW contamination on Yolo County Airport, is judged "negligible" and a RAC score of "4" is assigned to the FUDS. Appendix I furnishes the Risk Assessment Code Procedure Form, indicating a rating of "marginal" in the Severity Category and "Occasional" assessed as the Probability Level.

Despite extensive archive searches and other activities undertaken in the preparation of this report, i t can not be guaranteed that DOD generated Ordnance and Explosive Waste contamination does not exist at Yolo County Airport. Based on the analysis of the records reviewed in this ASR; the previous documentation outlined in the records of the Sacramento District, U.S. Army Corps of Engineers; interviews with airport and public and emergency officials, historians, and others with site knowledge; and the actual visual site survey, there is little reason to suspect contamination.

In summary, there is little reason to suspect contamination remains on this FUDS. One or two other action(s) may be appropriate at this site before finalizing any future course of action. These suggestions are furnished within a separate report, the Archive Search CONC1,USIONS and RECOMMENDATIONS.

Location Map Vicinity Map Airport Vicinity Site Plan Current Airport Layout Aerial Photo Interpretation Historic Airport Layout-1 975 Historic Real Estate

YOLO COUNTY AIRPORT (W I NTERS-DAV I S FLIGHT STRIP)

YOLO COUNTY, CALIFORNIA DERP-FUDS" J09CA009402

PROJECT LOCATION MAP KIT TO SCALE PR(MCT D I E MARCH 1995 I DATE OF YIP, 1994

21-MAR-1995 OW8 I /n/oew45~D/sh4T/map/yoIoIocCdqn

- I YOLO COUNTY A l RPORT STATE INDEX (WINTERS-DAVIS F L I G H T S T R I P )

YOLO COUNTY. C A L I F O R N I A DERP-FUDS* J 0 9 C A 0 0 9 4 0 2

V I C I N I T Y MAP PROJECT OAT& MARCH 1995 IDATEOFMAP: X

1 YOLO COUNTY AIRPORT

AIRPORT V I C I N I T Y MAP NOT TO SCALE F'iWJECT OAT& MARCH 1995

( DATE OF MAP: J U L T 17.1993

13-MAR-1995 07:46 I n:?oe~95ob~sh4tmo~?yoloslte.dqn 8 .dt

--

M-4 YOLO COUNTY AIRPORT

(WINTERS-DAVIS FL IGHT STRIP) YOLO COUNTY, CALIFORNIA DERP-FUDS" J 0 9 C A 0 0 9 4 0 2

S I T E MAP - - .

MOT TO SCALE PROJECT DATG MARCH 1995 1 DATE C f MAP, 1943

21-MAR-1995 0854 I n:toe~95ob*sh4~0p*y~I043.d(I~& .Clt

YOLO COUNTY AIRPORT (* INTERS-DAVIS FLIGHT STRIP)

YOLO COUNTY, CALIFORNIA DERP-FUDS" J 0 9 C A 0 0 9 4 0 2 CURRENT AIRPORT LAYOUT

FEATURE NUMBER FEATURE DESCRIPTION

I. BOMB STORAGE AREA. IA. THIRTEEN SQUARE REVETMENTS. 18. RECTANGULAR BUILDING FOUNDAT ION. IC. SMALL SQUARE STRUCTURE. 2.

~ ~~ ~

DEPRESSION/WEATHERED TRENCH (?I.- -

ROUGH SCARRED AREA WITH TWO BUILDINGS AND A TOWER. SCATTERED OBJECTS/DEBRIS. SCARRING AND DEBRIS LOOK AS I F THERE MAY HAVE BEEN A FIRE AT AND VICINITY OF THE BUILDINGS.

LARGE ROUGH SCARRED AREA. POSSIBLE FORMER DISP~SAL AREA.

POSSIBLE TRENCH SCARS.

LEGEND

S I T E BOUNDARY

0 FEATURE LOCATION

, M-6 YOLO COUNTY AIRPORT

YOLO COUNTY, CALIFORNIA DERPFUDS ' J 0 9 C A 0 0 9 4 0 2

A E R I A L PHOTO INTERPRETATION 1952 PHOTOGRAPHY

PROJ.DATG LWICH 1995 DATE OF PIlOTOt 9-11-52 NOT TO SCALE

21-MAR4995 09x11 ~ ~ ~ O ~ V ~ S ~ ~ ~ S M ~ / ~ ~ O ~ O / Y O I O S ~ O I . ~ P ~& ya105zo h b e x t

1 L l l W A f C U t & R

i o r r u!4 *~-yuciecn 5 0 6 s loi L . d < c.l.L l d e t

- - *gd$ <; ,;zj L.:..- ,i - - I'"&' I*l u,,.

YOLO COUNTY. CAL IFORNIA DERP-FUDS" J 0 9 C A 0 0 9 4 0 2

NOT TO SCALE PROJECT DATh MARCH 19% I DATE OF MIPS MAACH 3. 1975 13-MAR-1995 13:16 I n:toew95abtsh4tmap*yolo75.dgn & .clt

TRANSPORTATION FACILiTlES

.... ... ..... -.n+; _. ~- - _ . ZLJL+O.G r 5

... . - - . . F A ? f ROAD

. . . . . . . . - 93 d ffXR*i it0~C ...... ...

. ...-... - . . . -. AIZLNE

-AGCUlS!Tl ON-- ......-. ........ ! i l t . i 5 TQXL W*% A~PUtf lE3

nCE5 OW%G EY w b ........... 39.83'

ACRES P I W 2.. ~ ~ . . . i AGES LFASh3 =OM W. .P .... -- . . . . . . . -

. .... . A ~ E S ruutum lo u e . .% i . l a t ..... . . . . . . . . . . . . . : b.cPE5 ZrnAlFEI Tc W.0

i STATE INDEX

i TDTL A 7 t S tHS?QSFC OF 9 F 13 - r ' ACRU FE-SAYSrERREQ - 201.55t .-

4JIE5 EKMANGED. ... - - - - - - - 4CBES 0;FLLWEE - - - - - - --- S U E S TO Y A A. . . . -- -.WS 2?- .

LEGEND I / j l S M V A T O H Jt.L - - - -

- --- -n-

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I LUID G I * K -%h.. - -.-pee-

a-. W3G-L s ICRGUk - . - - --- .- , cam1 - M V P A I i m. - - - - ----- 1 -0Wwsi-419 I*$- -

SKTGY '14L -. - - - - -

REAL ESTATE

WINTERS-WVtS LANDING STRIP !tUX LIAEY NCI 7 70 STOCKTGN FtEWl M-8

YOLO COUNTY AIRPORT (WINTERS-DAVIS F L I G H T S T R I P )

YOLO COUNTY. C A L I F O R N I A DERP-FUDS" J 0 9 C A 0 0 9 4 0 2

H I S T O R I C REAL E S T A T E 'ROJECT D A T G MARCH 19% I DATE Of MAP: AUC 1943

13-MAR-1995 14:34 I n:toew95obtsh4~moptyolol943.dgn & .cit CALE



YOLO COUNTY AIRPORT (FORMERLY WINTER-DAVIS FLIGHT STRIP)



APPENDICES

REFERENCES

ACRONYMS

REPORTS/ST'UDIES/LE?TERS/MEMORANDUMS

HISTORICAL, PHO'I'OGRAPHS - NOT USED

INTERVIEWS

NEWSPAPERSIJOURNALS - NOT USED

PRESENT srm PHOTOGRAPHS

HISTORICAL MAPSIDRAWINGS - NOT USED

RISK ASSESSMENT CODE PROCEDURE FORMS

REPORT DISTRIBUTION LIST

ARCHIVE KDDRESSES

APPENDIX A

REF'ERENCES






APPENDIX A - REFERENCES Al . INPR REFERENCES

U.S. A r m y Corps of Engineers, Sacramento District 1991 Defense Environmental Restoration Program, Formerly Used Defense Sites,

Findings and Determination of Eligibility, Garden City Army Air Field, Kansas Site No. JO9CA009400 (XWR).

A2. REFERENCES

Backes, Charles, Colonel U. S. A m y Air Corps 1944 Letter to Commanding General, Army Air Forces, Washington D. C., dated

December 13, Accession # 342-54D-6075, Box 1 of 1, Folder 686, National Personnel. Records Center, St. Louis, MO.

Hedger, H. E., Major, U. S. Army Corps of Engineers 1943 Telegram to Division Engineer, Salt Lake City, Utah, dated April 20, RG 77,

Accession # A51-59, Box 472 Windharn - Winterport, Folder 633, USAF Historical Research Center, Maxwell AFB, AL.

Mueller, Robert 1989 Air Force Bases As of 17 September, 1982, published 1989, by the Office of

Air Force History, Washington D.C., pages 375, 378, 397 and 400.

Pyle, C. W., Colonel U. S. Army Air Corps 1944 Letter to Commanding General, Western Flying Training Command, Santa Ana,

California, dated September 13, Accession # 342-54D-6075, Box 1 of 1, Folder 686, National Personnel Records Center, St. Louis, MO.

U. S. Army Air Corps 1944 History of the Hamilton Field Air Base Area, California, dated February 1929 -

31 March 1944, Box 283.81-10 to 284.04-2, Volume 284.04-1, USAF Historical Research Center, Maxwell AFB, AL.

U. S. A m y Air Corps 1944 History of the Hamilton Field Air Base Area, California, dated April - July

1944, Box 284.04-2A to 284.04-3A, Volume 284.04-3, USAF Historical Research Center, Maxwell AFB, AL.

War Assets Administration 194? Preliminary Report 300.04, Winters-Davis Flight Strip, Yolo County, California,

n.d., RG 2'70, Real Property Disposal Files, Box 147, Folder W-Calif-183, Winters-Davis Flight Strip, National Archives and Records Administration, San Bruno, CA..

Yolo County Planning Board 1976 Yolo County Airport Master Plan, Yolo County, CA, Yolo County Planning

Department; General Files, Yolo County Planning Departmen, Woodland, CA.

A3. REFERENCES FOR GEOLOGY AND SOILS

Bates, Leland A. 197'7 Soil Survey of Solano County, California. US Department of Agriculture in

cooperation with University of California Agricultural Experiment Station.

Page, R.W. 1986 Regional Aquifer-System Analysis; Geology of the Fresh Ground-Water Basin of

the Centrai Valley, California, with Texture Maps and Sections. US Geological Survey Professional Paper 140 1-C .

Thornbury, William D. 1965 Regional Geomorphology of the United States. Department of Geology, Indiana

University, John Wiley & Sons, Inc., New York.

APPENDIX B

ACRONYMS

ASR (CERCLA

CFR CEHND CEMP CEMRD CESPD C O N r n C W M DERA DERP DOD EPA ERDA m s FWS HE HTW INPR MCPIMCX NCP NGVD OEW QASAS RAC RDIRA SARA USACE USAEDH USC USGS UXO






APPENDIX B - ACRONYMS

Archive Search Report Comprehensive Environmental Response, Compensation and Liability Act

Code of Federal Regulations Corps of Engineers, Huntsville Division Corps of Engineers, Directorate of Military Programs Corps of Engineers, Missouri River Division Corps of Engineers, South Pacific Division Cmtainerized/Hazardous and Toxic Waste Chemical Warfare Material Defense Environmental Restoration Account Defense Environmental Restoration Program Department of Defense Environmental Protection Agency Environmental Restoration Defense Account Formerly Used Defense Sites U. S. Fish and Wildlife High Explosive Hazardous and Toxic Waste Inventory Project Report Mandatory Center of Expertise National Contingency Plan National Geodetic Vertical Datum Ordnance and Explosive Waste Quality Assurance Specialist-Ammunition Surveillance Risk Assessment Code Remedial Design and Remedial Action Superfund Amendments and Reauthorization Act U.S Army Corps of Engineers U.S. Army Engineer Division, Huntsville, AL U.S. Code U. S. Geological Survey Unexploded Ordnance

Appendices B- 1

APPENDIX C

REPORTS, STUDIES, LETTERS, MEMORANDUMS


ARC- SEARCH REPORT FOR

YOLO COUNTY AIRPORT (FORMERLY WINTER-DAMS FLIGHT STRIP)



APPENDIX C

C I. Inventory Project Report (INPR) , 1995, Yolo County Airport, Winters, CA, Site No. .J09CA009402.

C2. Backes, Charles, Colonel U. S. Army Air Corps, Letter to Commanding General, Army Air Forces, Washington D. C., 1944.

C:3. Hedger, :H. E., Major, U. S. Army Corps of Engineers, Telegram to Division Engineer, Salt Lake City, 1943.

C4. Mueller, Robert, Air Force Bases As of 1 7 September, 1982, published 1989, by the Office of Air Force History, Washington D.C., pages 375, 378, 397 and 400, 1989.

C5. Pyle, C. W., Colonel U. S. Army Air Corps, Letter to Commanding General, Western Flying Training Command, Santa Ana, California, 1944.

C6. U. S. Army Air Corps, History of the Hamilton Field Air Base Area, California, dated February 1929 - 3 1 March 1944.

C7. U. S. Army Air Corps, History of the Hamilton Field Air Base Area, California, 1944.

C%. War Assets Administration, Preliminary Report 300.04, Winters-Davis Flight Strip, Yolo County, California, n.d.

C19. Yolo County Planning Board, Yolo County Airport Master Plan, Yolo County, CA, 19'76.

C110. SAFETY PLAN

C: 1 1. SITE VISIT

C 12. File Documents References List

APPENDIX C-1

hventory Project Report (INPR), 1995, Yolo County Airport, Winters, CA,

Site No. J09CA009400

DEPARTMENT OF THE ARMY U.S. Army Corps of Engineers

WASHINGTON, D.C. 20314-1000

REPLY TO ATTENTION OF:

CEMP-RF (200-la) ,5J/u~ Qx

MEMORANDUM FOR COMMANDER, SOUTH PACIFIC DIVISION, ATTN: CESPD-PM

SUBJECT: Defense ~nvir6mental Restoration Program for Formerly Used Defense Sites (DERP-FUDS) - Yolo County Airport, Formerly Winters-Davis Flight Strip and Yolo County International Airport, Site No. J09CA009400, Project Nos. J09CA009401 and JO9CAOO9402

I. This memorandum authorizes the remedial design and remedial action (RD/RA) for proposed containerized hazardous and toxic waste (CON/HTW) project as recommended in the Inventory Project Report, SAB. Because this project involves fuel supply lines, it is necessary that you follow the policy guidance in CEMP-RF Memorandum, 31 July 1990, Subject: Policy Guidance for Underground Storage ~anks. (USTs) in Formerly Used Defense Site (FUDS). We concur with CESPD that this project should be executed by CESPK. Pending CEHND recommendation, a decision on project J09CA009402 will follow at a later date.

2. We request:

i3. CESPD, within sixty days of the date of this memorandum, ensure the landowners are notified of the decision and provide copies of the notification letter to CEMP-RF and CEHND-ED-PM.

b. CESPD ensure that the project is included in both the FY-92 workplan and the DERP-FUDS database for a five-year workplan development. All contracts should be awarded before the fourth quarter of any fiscal year.

c. CEHND ensure that the project is included in the inventory database within thirty days of the date of this memorandum.

3. POC: Irme Sailer, 202-504-4694.

FOR THE DIRECTOR OF MILITARY PROGRAMS:

CF : CESPK-ED-M CEHND-ED-PM

Colonel, Corps of Engineers Chief, Environmental Restoration Division

Directorate of Military Programs

CESPD-ED-GH (2 00- lc)

MEMORANDUM FOR

Commander, U.S. Army Corps of Engineers, 20 Massachusetts Avenue, N . W . , Washington, DC 20314-1000

Commander, U.S. A r m y Engineer Divis ion, H u n t s v i l l e , P.O. Box 1600, H u n t s v i l l e , Alabama 35807-4301

Commander, U.S. Army Engineer Divis ion, Missour i River , P.O. Box 103, Clowntown S t a t i o n , Omaha, Nebraska 68101-0103

SUBJECT: Defense Environmental Res to ra t ion Program For Formerly Used Defense S i t e s (DERP-FUDS), Inventory P r o j e c t Report ( I N P R ) f o r Yolo County A i r p o r t , S i t e No. J09CA009400.

1. I a m forwarding t h e INPR f o r Yolo County Ai rpo r t f o r a p p r o p r i a t e a c t i o n . The s i t e is e l i g i b l e f o r DERP-FUDS. T h e proposed CON/HTW p r o j e c t i s a l s o e l i g i b l e .

2 . I recommend t h a t :

a . CEMP-R approve t h e proposed CON/HTW p r o j e c t and a s s i g n it through t h i s headqua r t e r s t o CESPK f o r RD/RA.

b. CEHND determine i f f u r t h e r study and remedial a c t i o n a r e needed a t t h e bomb s t o r a g e revetment and f u s e s t o r a g e magazine l o c a t i o n s .

ROGER F. YANKOUPE Br igad ie r General , U . S . Army Commanding

REPLY To A1TEKIX)W of

J

DEPARTMENT OF THE ARMY U.S. ARMY ENGINEER DISTRICT, SACRAMENTO

CORPS OF ENGINEERS 1325 J STREET

SACRAMENTO, CALIFORNIA 95814-2922

2 6 August 1 9 9 1 CESPK-ED-M

MEMORANDUM FOR Commander, Sou th P a c i f i c D i v i s i o n

SUBJECT: DEW-FUDS F i n a l I n v e n t o r y P r o j e c t Repor t (INPR) f o r S i t e No. J09CAl309400, Yolo County A i r p o r t , C a l i f o r n i a

1. T h i s INPR r e p o r t s on t h e DERo-FUDS p r e l i m i n a r y a s s e s s m e n t o f t h e Yolo County A i r p o r t . A s i t e v i s i t was conduc ted on d a t e s

- l i s t e d i n t h e r e p o r t .

2 . W e have determined t h a t t h e s i t e was f o r m e r l y u s e d by t h e Army. A r e c o m e n d e d F i n d i n g s and D e t e r m i n a t i o n o f E l i g i b i l i t y i s i n c l u d e d .

3 W e have a l s o d e t e r m i n e d t h e r e i s h i r a r d o r s w a s t e a t t h e s i t e e l i g i b l e f o r c l e a n u p u n a e r DEW-FUDS. The c a t e g o r i e s of w a s t e a t t h e s i t e a r e CONiHTW and O E W . P r o j e c t summary sheets f o r e a c h p r o p o s e d p r o j e c t are i n c l u d e d .

4 . I recommend t h a t you:

a . Approve a n d s i g n t he F i n d i n g s and D e t e r m i n a t i o n of E l i g i b i l i t y ;

b . Forward a copy of t h i s INPR t o CEMP r e v e s t i n g a p p r o v a l a ~ c i f u n d s f o r t h i s D i s t r i c t t o accompl i sh t h e CONiHTW p r o j e c t . I f f u n d s a r e p r o v i d e d by f i r s t q u a r t e r FY92, we c a n p r o c e e d t o t h e n e a t s t e p o f d e s i g n and r e m e d i a t i o n i n FY92; and,

c . Fo rward a copy of t h i s INPR t o HND f o r t he PA f i l e a n d f o r a d e t e r m i n a t i o n of t he need f o r f u r t h e r s t u d y o f t h e bomb s t o r a g e a r e a .

i?pwf?du LAURENCE R. SADOFF

COL, EN Commanding

DEFENSE ENVIRONMENTAL RESTORATION

PROGRAM

INMENTORY PROJECT REPORT

YOLO COUNTY AIRPORT (WINTERS-DAVIS FLIGHT STRIP)

SITE NO. J09CA009400

PREPARED BY

DEPARTMENT OF THE ARMY

SACRAMENTO DISTRICT, CORPS OF ENGINEERS

SACRAMENTO, CALIFORNIA

AUGUST 1991

SITE SURVEY SUMMARY SHEET FOR

DERP-FUDS SITE NO. J09CA009400 YOLO COUNTY AIRPORT

SITE NAME: Yolo County Aupon. The site was formally known as the Winters-Davis Flight Strip and the Yolo Gxmty International Air Port.

LOCATION: The site is located in Yolo County, CA approximately 8 miles northwest of downtown Davis, California. More specifically it is located between county roads 95 and 96 running north south and roads 29 and 31 running east west. See location and vicinity maps at attachments 1 and 2.

SITE HISTORY: Between 1942 and 1943 the U.S. Government acquired by declaration of taking 308.57 acres and by transfer 201.58 acres, for a total of 510.15 acres, for use as a flight strip to provide alternate basing for B25 aircraft normally located at McC1ella.n Air Force Base. Site improve,ments included a runway, taxiways, two aircraft fueling areas, an operations area, control tower, bomb storage area, and housing area.

Ln 1946, the use permit for 201.58 acres was relinquished to the Public Roads Ad- minisuation VRA) and the remaining 308.57 acres transferred to the War Assets Administration (WAA). In 1948 the WAA transferred 294.40 acres, along with the 201.58 acres from the PRA, to the County of Yolo for use as an airport. The remaining 14.17 acres fiom the WAA reverted to the origmal owners.

SITE VISIT: a. On 26 Jan 87, Mr. Kent R Westover from the Sacramento District visited the site to assess the current conditions and met with the following persons:

Mr. Elarl Balc h Director of Parks, Museum and Grounds County of Yolo 625 Court St., Room B-03 Woodland, CA 95695 (916) 666-81 15

Mr. Ron Marley Caretaker, Yo10 County Axport, CA (916) 756-0120

b. On 27 Mar 87, Mr. Westover and Mr. Marley met with on site with Mr. Larry Curtis, of Curits & Associates, concerning the &position of underground storage tanks.

Mr. Larry Curits Curtis & Associates P.O. Box 924 Woodland, CA 95695 (916) 753-4950

c. On 23 May 91, Ms. Sharon Bruno met on site with Messrs. Earl Balch, Ron Marley and Frank Hildebrand, Managing Partner, Yolo Aviation.

The site has experienced considerable development since the initial site visits in 1987. Messrs. Marley and Hildebrand reported both of that the two original 25,000 gal underground storage ranks,along with a new 10,000 gal tank, have been removed fiom the airport. Further, one smoke device (OEW) was found on a farm south of the airport and was destroyed by the County. The bomb storage area at the south end of the field is essentially under cultivation, except for a strip of ground covered by trees. Among the trees is a ridge of earth, approximately 5 feet high, strewn with concrete rubble. No intact snuctures were visible.

CATEGORY OF HAZARDS: CONLHTW, OEW

PROJECT DESCRIPTION: - C O N m : Removal of underground piping and connected fill stands and fuel-

ing pii: boxes at 4 locations. Test sites where tanks have been previously removed. --OEW: There are 16 known locations for either Bomb Storage Revetments or

Fuse Storage Magazines.

AVAILABLE STUDIES AND REPORTS: None

P A POC: Larry M. Hergrnooser, CESPK-ED-M, 9 161557-767 1

PROJECT SUMMARY SHEET FOR

DERP-FUDS OEW PROJECT NO. J09CAOOP302 YOLO COUNTY AIRPORT

SITE NO. J09CAW400

PROJECT DESCRPTION: Records indicate that there were 16 stmctures on site for the storage of bombs or bomb fuses. A smoke device was found on a farm south of site and destroyed by the county. There is no evidence of ordnance within the bomb storage area, nor of the open storage earthen revetments or wOOd frame earthen floor magazines.

PROECT ELIGIBIZ.ITY: Records indicate that thrs facility was built and used by the U.S. Army. This project has beer1 evaluated IAW Appenhx A to the CEMP-RT Policy and Criteria Memo- randun dtd 5 Apr 90.

POLICY CONSIDERATIONS: There is no policy applicable to this project. There are no records available absolving the government from site restoration. Records do not indicate any ordnance related activities occiuring on site since disposal, and no deed resmcrions are nored. No clearance certificates for OEW were located for this site.

PROPOSED PROJECT: Recommend a confirmation study within the bomb storage area IAW the RACl determination to identify the presence of any remaining OEW.

RISK ASSESSMEW CODE: Attached.

DISTRICT POC: Larry M. Bergrnooser, CESPK-ED-M, 916/557-767 1

STATE INDEX

I

VICINITY MAP I

SCALE \w M i ~ t s

i. $ 0 N 111

H- - - - 0 1 Z : ---I

-d 1

SCALE 1:24000 I m u

CONTOUR INTERVAL 5 FEET

FINDINGS AND DETERMINATION OF ELIGIBILITY YOLO COUNTY AIRPORT

YOLO, CALIFORNIA SITE NO. J09CA009400

FINDINGS OF FACT

1. By use pennit from the U.S. Public Roads Administration, dated 3 November 1943, 201.58 acres were transferred to the War Department. An additional 308.57 acres in total were acquired by the War Department by Declaration of Taking between 1942 and 1943, for a total 510.15 acres.

2. The site was used as a flight snip to provide alternate basing for B25 aircraft normally located at McClellan Air Force Base. Site improvements included a runway, taxiways, two aircraft fueling areas, an operations area, control tower, bomb storage area, and housing area.

3. The use permit for 201.58 acres was relinquished to the Public Roads Administration (PRA) on 12 April 1946. The remaining 308.57 acres transferred to the War Assets Administration (WAA) on 21 September 1946. A total of 294.40 acres were transferred by quitclaim deed from the WAA on 14 June 1948, along with the 201.58 acres from the PRA, to the County of Yolo for use as an airport. The remaining 14.17 acres from the WAA reverted to the original owners, Mr. and Mrs. Thomas E. Reardon. The quitclaim deed includes a recapture clause. The 495.98 acre site is currently owned by the County of Yolo and utilized as the Yolo County h p n . The 14.17 acre portion of the site is owned by St. Mary's College and used for agriculture.

DETERMINATION

Based on the foregoing findings of fact, the site has been determined to be formerly used by the DOD. Therefore, it is elipble for the Program for Formerly Used Defense Sites, established under 10 U.S.C. 2701 et seq.

4 D - f ( Date / 10 ROG . YANKOUPE

L

Brigadier General, U.S. Army Commanding

PROJECT SUMMARY SHEET FOR \

DERP-FUDS COKIHTW PROJECT NO. ~ 0 9 ~ ~ 0 0 9 3 0 1 YOLO COUNTY AIRPORT SITE NO. JWCA009400

PROJECT DESCRIPTION: Records indicate that there were two (2) underground storage tanks and two (2) above ground storage tanks each with associated pipelines, fueling stations and pit boxes (UST only) on the site. Available records indicare that the tanks were removed however the associated piping, fueling stations and pits remain.

PROJECT ELIGIBILITY: Records indicate that this facility was built and used by the U.S. Army.

POLICY CONSIDERATIONS: Records and interviews indicate that the two underground storage tanks were beneficially used, then removed from the site. As such; associated piping, fueling starions and pits are nor proposed for this project. There is no indication that the two above ground tanks were used afrer mnsfer.

PROPOSED PROJECT: Removal of associated piping for the two above ground storage tanks and soil testing at the former tank sites.

DD FORM 1391 : Attached

DISTRICT POC: Larry M. Bergmooser, CESPK-ED-M, 9 161557-767 1

I T E M

L a a t e abandoned fue l supply lines ard test sol1 .

I

Yo10 County Airport, CA DERP/FUDS : Locate Underyround Pi@

a. Equipnent cost

I N S T A L L A T I O N A N D L O ( : A T ~ O ~ 4 PROJECT T I T L E

1. D A T E

21 Aug 91

COMPOhENT

ARMY

b. Field Work

FY 19 91 MILITARY CONSTRUCTION PROJECT DATA

8 . PROJECT COST ($000)

I 26.93

c. Office Work

d. Soi l Sampling and Testing

9 COST ESTIMATES

7 PROJECT NUMBER I

J O ~ C A O O ~ ~ O ~

PROGRAM ELEMENT

Locate abandor~ed fue l supply lines and test s o i l . ram& f r m site by others .

6 CATEGORY CODE

a)N/KIw

Q U A N T I T Y U N I T COST

C

c .I

COST ($000:

Fuel tanks have been

1391 P R E V I O U S E D I T I O N S M A Y B E USED I N T E R N A L L Y DD 1 D E C 7 6

PAGE N O . U N T I L E X H A U S T E D

FOR OFFICIAL USE ONLY ( W H E N DATA IS ENTERED)

CONTARINATION SUflf'lARY FOR

DERP PROJECT NO. J09CA009400

The known potential hazards at the Yo10 County Alrport consist primarily ctf above and underqround fuel storage tanks, associated plplng. fuellng pit boxes, and the possibility of ordnance at the previous Bumb Storage Area. A table follows which outlines the potential hazards and their observed or known status.

INVENTORY OF POTENTIAL HAZARD

Bldg. T-8 (Houslng Area)

Bldg. T-40 ( Hous i nq F i r ea )

B1dqs.T-100, through T- 140

c ordnance Area)

Bldg. T-210 (near south end of flight str l p )

Bldg. T-212 lad jacent to Bldq. T-210)

91dq. T-280 (near north end of flight strlp)

Description:

Fuel Oil Storage Unit, elevated steel tank with concrete foundat ion

Butene Storage Unit, elevated steel tank with concrete foundat ion

Bomb Storage Area, storage revetments and magaz ines (See Schedule of Buildinas for details)

Caoac i tv

500 gal

1000 gal

Gasoline Storage 25,000 gal Unit, underqround steel tank with concrete foundation

Truck Fill Stand, steel pipe with concrete foundation

Fueling Pit Boxes and associated steel piping (piping was connected to the fuel tank, T-210)

Gasoline Storage Unit, underground steel tank with concrete foundat ion

Comments :

NO LONGER AT THE SITE

NO LONGER AT THE SITE

NO VISUAL EVIDENCE: OF ANY BUILDINGS, ORDNANCE, OR DEBRIS AT THE SITE

Tank was removed in 1979 by Curtis and Associates. Relocated to Curtis facility and r-ed f m the site.

STILL ON SITE

4 boxes BOXES STILL ON 800 LF of SITE - PIPING piping &SSUMED TO STILL

IN PLACE

25,000 gal Tank was removed in 1974- Relocated to Curtis facility and re'IWV€d fran the slte.

Locat ion: Description: Capac i t v Comments :

Bldg. T-2B2 Truck Fill Stand, NFI (adjacent to steel pipe with Bldq. T-280) concrete foundation

STILL ON SITE

Eldqs. T - 2 8 4 . Fueling Pit Boxes 4 boxes BOXES STILL ON T-296, T-288, and associated steel 1200 LF of SITE - PIPING T-290 piping (piping piping ASSUMED TO STILL

connected to the IN PLACE fuel tank, 7-280)

-. file Name: RISK # 2 i1m: ,*$s 1.- :-u- Rater's Name EC?ct+.ccst .q

'-5 L Plle Name: 2ISK 1 2

Revlsea: 31 Yzy 89 APPSNDIX A

RISK XSSESSZENT 1ROCL3URES FOR ORDNANCE AND EXPLOSIVE WhSTZ (OEU;

The 3EY r:sk assesszent :s based upon docmen:ed 2xdence cons;st:ag of r?c=r=s searzies. reycr-s oi Ex?;os:-~e Ordnance Der3chsen: actlons. and fisl2 sbs?r-:a::cris. :nr?r.:rews. and seasur23encs. These 1 i :a are used to assess the . . r r s i :n-:~--:ec 3asei 1:;oc r ? ? iazarfs 1ientli:ei at f ? ? s::?. 3 e r l s ~ assess- Zen: :s cmpcsci 3 : 2.~0 f3c:ors. hazari seversf7 anc 3azarc ;robab:l:ty.

Par: I. "22:: 'ererx. Eazard sever::y c3tegcr:es are def:>ed to prov:ds a q:a::tar;,:e neasar? 3: :h2 wars: crec~bls m s n a p resclti9g fros personnel ex?cs:r? :o -:ar:cus ty?es acd quant::;es of unexpioded ordnance Items.

A . tcnven::znal Crdnance and Ammun:t:on

Xmmun:t;en. Blank or Pracrlce 4

Sonbs. 3?105172 10

Bombs. P r a c t ~ c e . Fused 6

Grenades. 9 n e s 10

Grenades. Y z ~ e s , Tractice, Fused 6

VALUE

-4; - d - a i ,&L 4 6 - d

Barrier

As art:f::ial or natxrsl 5arr;er (e.g.. a fence comblned wl:h a cllf:!, vhlc!~ c2r?iet2:y surr3unas the facll~ty; anc a seans to control entry, at ail :lmes. :tr=ugh the Fates ar c:her entrances t3 th? fac:!:ty ( e . ~ . . an act~ndart. :elevision soc:r2rs. locke5 entrances. a r c3ntr3l;sc r:adway access :3 t k e f3c:l:ry:.

Asslgnea Value

0

- : Z::? 3ynat:cs - 3:s deals vl;b site conditions that are subject to change . -. .- - .:..*.,- -.. ... c - a . - . e . 3u: :say be ~:able at the present. Examples would be sxcesslve sc:l crr3s:ca Sy beaches or streams. increasing land development :bat could r e c ~ z e llstances f r m :he s;rz rc 1n5abl:attd areas or otherwise Increase accessa5:l:ry.

VALUE

(!!axlzam Vaiue of 51

Total value for hazard probability. Sux of Values A througn G. (Yot to exceed 3 5 1 . Apply thrs value to Hazard Probabili:~ Table 2 to deterzrne Bazarl Levei.

3 . Hazarc Probab i l : :~ . :he probaS:li ty :hat a hazard h a s been o r w i l l be c r e a r e a due c 3 :he presence and o t i e r r a t e d f;c:ors of unexploded ordnance 3 r *x?l3s:-.-e s a : 2 r l a l s on a i o r s e r l y used DOD size.

yss NO VXLL'E VALUE VALUE

,c :he s u r f a c e o r vl:h:n 3 f e e t . 5 0 -

.. Value f e r 1oca::cn of ;XC. iYaax:=un V a l - ~ e cf 5 1 .

2 . 3 : ~ : i ~ c e r o n e a r e s t :~kab:t~c :3ca::ons o r s t r u c t u r e s l ~ k e l y t o b e a t r ~ s k f i , - . . i r x , t w s ; fe ( r a t t d s . ? a r k s . ? l a y q r 3 c n a s , and bu:ld:ngs!.

D l s t 3 c c e r o Nearesr Targer VALYE

Less r k a c 1 3 5 0 f e e ? 5

.1< 1 ,,,L f e e t t o 0 . 5 m l l e s 4

Over 5.0 m l e s 0

D l s t a n c e t o Persons Value :!!ax:;us Value of 5 ; .

HAZARD P!?OBABIL;TY

Descrlptlon Level Value

r 1 . 5:sk Assessment. The rlsk assessment vaiue for thls s;:~ 1s detzr3:aed us;ng t5e following Tabie 3, Enter wrrh the results of the hazard proja5~l:ty and bazard severity values.

HAZARD P R O B A B I L i N - 9 (from Table 2 ;

L A Y O U T PLAN S c o h 1-.ZOO'

. - I 1 110 CALDc' . t S l O . A 0 t u.17 I _ . _ . . .- -. . - .-- CVL SUL 1.: tsooo u s . _ - -. a - o c. STCLL t a m ~ r r n r - t . -

- l . t m"C. ILL -STArO - -- - * --- - ST.. - 0 . 4 . - ? ? r ~ c - r e u a t rr r r r I cow - o ITCCL e1-t . LDIC !D. a -

7 . * u c , ' ~ m c r ~ t nor - -- - - n c 1 . r ~ ! n o u W T ~ t T 1 ¶ 0 6 r m ) I * a ~ m r ; O m c . O O a u.0 A.*

APPENDIX C-2

Backes, Charles, Colonel U. S. Army Air Corps, Letter to Commanding General,

Army Air Forces, Washington D. C., 1944

APPENDIX C-3

Hedger, EI. E., Major, U. S. Army Corps of Engineers, Telegram to Division Engineer,

Salt Lake City, 1943

LEGRA .M MENT RATE C lAL I ~ U ~ I ' Y L J " - -

ASSISTANT

a s . %

-. -- -----

REOPJ): l o r k au t lmr ized f o r a l o m b e h Squadron a t i l inters-3auls P l i g h t S t r i p , C a l i f o r ~ i a x a s de fe r r ed penliing h e t t c r a e a t h e r condi t ions . M now reques t a d d i t i o n a l coris t ruct ion f o r Bombb Storage a t t h i s f l i g h t s t r i p . This t e l e q ~ e r e q ~ e s t s r e p o r t fro, D i s t . m g r . as t o l i e n cons t ruc t ion

APPENDIX C-4

Mueller, Robert, Air Force Bases As of 17 September, 1982, published 1989, by the Office of Air Force History, Washington D.C., pages 375,378,397 and 400, 1989

Mather Air Force Base

Location: Located 12 mi SE of Sacramento, CA.

Name: Named in honor of 2d Lt Carl Spencer Mather (1 894-19 18). Lieutenant Mather learned to fly in 1915 and was killed on 30 Jan 1918 while on a training flight near Ellington Field, TX, when his JN-4D collided with another aircraft.

Date of Current Name: 13 Jan 1948.

Previous Names: Mather Field, 2 May 1918.

Date of Establishment: 21 Feb 1918.

1-1 CALIFORNIA

Date Construction Began: 15 Mar 1918. Date of Beneficial Occupancy: 30 Apr 1918. Base Operating Units: 283d Aero sq , 30 Apr 1918 (rdsgd Sq C,

Mather Fld, Jul1918)-c. 8 Jan 1919; unk, 9 Jan-2 Nov 1919; Det, 91st Aero Sq, 3 Nov 1919-May 1922 (During Apr-Nov 1922, the 91st Sq was stationed at Crissy Fld and maintained only a small detachment at Mather Fld.); AS Det, Crissy Fld, Jun-Nov 1922.20th Pursuit Gp, 15 Nov 1930-29 Feb 1932. 77th Air Base Gp, HQ and HQ Sq, 13 May 1941 (rdsgd 77th HQ and HQ Sq, 77th Air Service Gp, 13 Jun 1942; 67th Base HQ and Air Base Sq, 1 Aug 1942); 3031st AAF Base Unit, 1 May 1944; 1505th AAF Base Unit, 15 Sep 1944; 2622d AAF Base Unit, 20 Dec 1945; 3535th Air Base Gp, 26 Aug 1948; 323d Air Base Gp, 1 Apr 1973-.

Base Commanders: 1st Lt Sam P. Burman, 15 Mar 1918; Capt Albert D. Penney, 26 Apr 1918; Lt Col Delos @. Emmons, 15 Jun-30 Nov 1918; unk, 1-16 Dec 1918; Maj Walter J. Wynne, 17 Dec 1918-8 Jan 1919; unk, 9 J a n 3 Aug 1919; Maj Dana H. Crissey, 4 Aug 1919-unk; Maj Carl Spaatz, 19 Jul-7 Aug 1920; 1st Lt Eugene B. Bailey, Feb-Dec 1923; 1st Lt Paul L Williams, 11 Jan-28 Feb 1924. Maj Clarence L. Tinker, 15 Oct 1930-c. 15 Oct 1932. Maj Harvey F. Dyer, 25 Apr 1941; Lt Col (later, COP; Brig Gen)

AIR FORCE BASES

AFB), Las Vegas, NV, Apr 1946 (asgnd)-31 Mar 1948 (tsfrd to Williams AFB, AZ); Lincoln Aux Fld A-2 (also Mather Aux Fld A-2), 3.3 mi WNW of Lincoln, CA, -~ Feb 1943 (asgnd)-1 Apr 1943 (tsfrd to Stockton Fld, CA); Mather Homing Bcn A m (rdsgd Mather Rad Bcn Anx #I), 2 mi SSE of White Rock, CA, 28 Dec 1955 (asgnd)-24 Sep 1962 (dspd); Minter Fld, 14 mi NW of Bakersfield, CA, 11 Jan 1946 (asgnd)-20 Dec 1946 (tsfrd to Army Div Engss); Stead AFB, Reno, NV, 15 Jun 1966 (asgnd*)-6 Nov 1969 (dspd); Stead Water Sys Am, 1 mi SE of Reno, NV, 15 Jun 1966-7 Nov 1969 (dspd); Winters-Davis Flt Strip, 7 mi ENE of Winters, CA, 7 Jul 1943 (asgnd)-unk, 15 Jul 1944 (asgnd)-24 Nov 1944 (tsfrd to Stockton Fld, CA).

Major Changes in Operational Capability: Original construction completed 15 Jun 1918; training activities ceased 8 Jan 1919; field subsequently used by aerial forestry patrol; field area increased from 872 to 4,418 acres Jun 1941; navigation school started Aug 1941; major facility construction project completed 16 Mar 1942; B-25 transition 1943; Port of Em- barkation for Pacific 1944-1945; USAF Bombardment and Flight Engineer Schools opened Mar 1946; 750-unit Wherry housing project completed fall 1951; expansion project to accommodate-in a tenant status-SAC B-52 operations 1956-1957; additional construction, chiefly housing and concrete operational areas, completed 1961 and 1962; GAM-77A missiles ar- rived 1962; electronic warfare officer training transferred from Keesler AFB, MS, 1962-1963; composite medical facility completed late 1970; SRAM weapons system operational 1 Oct 1975; weapons system security upgrade project completed Feb 1980.

Major Commands to Which Assigned: Army Air Service, Mar 1918- 22 Jun 1922. Army Air Corps, 2 Jul 1926-Nov 1932. GHQAF, 1 Mar 1935 (rdsgd AF Combat Comd, 20 Jun 1941); Air Corps Flying Training Comd, 23 Jan 1942 (rdsgd AAF Flying Training Comd, 15 Mar 1942; AAF Training Comd, 3 1 Jul1943); Air Transport Comd, 1 Oct 1944; AAF Training Comd, 20 Dec 1945 (rdsgd Air Training Comd, 1 Jul 1946)-.

Major Changes in Status: Base served only for aerial forest patrol, beginning 8 Jan 1919; inactive status, 22 Jun 1922; field closed, 12 May 1923; active status, 1 Apr 1930; inactive status, 1 Nov 1932; a subpost of Presidio U.S. Army post, San Francisco, unk-13 May 1935; designated a subpost of Hamilton Fld, 13 May 1935; designated a subpost of Stockton Fld, 21. Feb 1941; established as a separate post and activated, 13 May 1941.

Units Assigned: 1918 1919

283 Aero Sq (Sq C, Mather

91 Aero Sq 3 Nov 19-24 Jan 20 1920

Fld) 30 Apr 18-c. 8 Jan 19 9 Awo Sq 27 Apr 20-29 Jun 22

* All Stead AFB installations were assigned to Mather AFB in inactive status in 1966.

378

McCIeIlan Air Force Base

Location: Located 7 mi NE of Sacramento, CA. CALlFORNlA

Name: Named in honor of Maj Hezekiah ("Hez") McClellan (1894- 1936). Posthumous recipient of the DFC, Major McClellan prepared early charts and records while pioneering Alaskan air routes. He died on 25-May 1936 when his Consolidated PB-2A, which he was flight-testing, crashed near Centerville, OH.

Date of Current Name: 13 Jan 1948.

Previous Names:Pacific Air De- pot (unofficial), 1935; Sacramento Ail Depot, 1 Feb 1937; McClellan Field, 1 Dec 1939.

Date of Establishment: Jul 1936. Date Construction Began: 7 Apr 1937. Date of Beneficial Occupancy: 15 Nov 1938. Base Operating Units: Sacramento Air Depot (SAD), Nov 1938; 10th

Station Complement, SAD, jointly with 18th Station Complement, SAD, c. 1 Jun 1942; 495th Base HQ and Air Base Sq, 1 Feb 1943; 4127th AAF Base Unit, 1 Apr 1944; HQ and HQ Sq, Sacramento Air Materiel Air Depot, 28 Aug 1948; 3083d Air Base Gp, 5 Oct 1949; HQ and HQ Sq, Sacramento Air Materiel Air Depot, 21 May 1950; HQ Sacramento Air Materiel Air Depot, 21 May 1951; 2852d Air Base Wg, 1 Aug 1953 (rdsgd 2852d Air Base Gp, 16 Oct 1964)-.

Base Commanders: Capt John A. Austin, 24 Aug 1938; 1st Lt Chris- tian F. Dreyer, 28 Oct 1938; Maj Charles M. Savage, 31 Oct 1938; Lt Col Stephen J. Idzorek, 16 Dec 1938; Col Harold A. Straws, 5 Feb 1939; Maj Fred C. Nelson, 25 Sep 1939; Col Frank M. Kennedy, 22 Oct 1939; Lt Col Frank C. Nelson, 28 May 1940; Col John M. Clark, 10 Jun 1941; Col Burton F. Lewis, 26 May 1942; Col George W. Polk Jr, 5 Sep 1942; Brig Gen Edwin S. Perrin, 1 Feb 1943; Col James W. Brown Jr, 15 May 1943; Col

AIR FORCE BASES

Sep 1945 (tsfrd to Army Div Engrs); Redding AAFld, 7% mi SE of Redding, CA, 15 Nov 1944 (asgnd)-9 Jan 1946 (tsfrd to Army Div Engrs); Reno AAB, 12 mi N of Reno, NV, 12 Feb 1943-12 Aug 1943; San Francisco Port Air Materiel Ofc, Ft Mason, CA, 1 Jul 1947-1 Aug 1954; Santa Rosa AF Recovery Cen #2 (rdsgd McClellan Admn Anx), 3 mi W of Chico, CA, 1 Apr i%5 (asgnd, detchd inst1)-25 Jan 1966 (dspd); Seattle Port Air Materiel Area, Seattle, WA, 1 Jul 1947-1 Apr 1954; Stockton Fld (rdsgd Stockton AAB), 4.6 mi SSE of Stockton, CA, 8 Mar 1946 (asgnd)-30 Nov 1946 (tsfrd to Amy Div Engrs); Taft-Kern County Aprt, 1 mi ESE of Taft, CA, 17 Sep 1945 (tsfrd fr Gardner Fld, CA)-27 Sep 1945 (tsfrd to Army Div Engrs); Taft-Kern County Aprt #2, 1 mi ESE of Taft, CA, 17 Sep 1945 (tsfrd fr Gardner Fld, CAI-27 Sep 1945 (tsfrd to Army Div Engrs); USAF Petroleum Stor Dep (rdsgd Mukilteo Fuel Stor Stn; Mukilteo AF POL Retail Distrn Stn), 5 mi SW of Everett, WA, 6 Mar 1952 (estbd)-1 Jan 1976 (tsfrd to MAC as a detchd instl); Winters-Davis Landing Strip, Winters, CA, 15 May 1945- 30 Dec 1945 (tsfrd to Army Div Engrs).

Major Changes in Operational Capability: Main structures including administration building, barracks, and hospital completed 18 Apr 1938; at time of dedication, 29 Apr 1939, depot and airfield facilities provided capability of repairing and overhauling 1,200 aircraft per year; P-38 and P-39 assembly lines supplemented by a P-40 line Jan 1940; base and depot used for storing aircraft, chiefly B-29s, following World War 11; stored F-80s and F-86s during early fifties; Globecom building completed and occupied Jun 1951; 105-unit Wherry housing project completed mid-1952, when base population increased from 2,300 to 6,000; vehicle, special equipment repair, and communications repair buildings completed Dec 1952; major building project to accommodate McClellan's chief tenant organization, 8th Air Divi- sku (later replaced by 552;d Airborne Early Warning and Control Wg), completed 1954-1956; 200-man dormitories and dining hall completed mid- 1956; additional housing project completed 6 May 1960; runway improve- ment project completed mid-1961; depot became USAF's specialist for logistic support of space systems and expanded maintenance and support of ground electronics in early 1960s; aprons and nose docks completed Jun 1% mission support responsibility for BMEWS, SAGE, and interceptor backup systems gained during 1965; seven airman dormitories completed Aug 1972; aircraft overhaul facilities completed in four stages between mid- 1971 and Mar 1977; depot radar systems overhaul and testing facility completed Sep 1977; logistics material processing facility completed Feb 1978; weapons system component plating shop completed late 1980; waste water reclamation plant completed early 1981.

Major Commands to Which Assigned: Materiel Division, Air Corps, 24 Aug 1938; Air Service Comd, 11 Dec 1941; AAF Materiel and Services, 17 Jul 1944 (rdsgd AAF Technical Service Comd, 3 1 Aug 1944; Air Techni-

APPENDIX C-5

Pyle, C. W., Colonel W.S. Army Air Corps, Letter to Commanding General,

Western Flying Training Command, Santa Ana, California, 1944

- * - - - - . 1. Tbs folluuing infornution i a ahlttd i n ccmpliarne w i t h Para-

,- _ ._ . ,h 12, I*r Bpartnmnt Circular 906.- I _ - ' % , i> . . - - .. , .\ ... . - ,.- . C. - ,

- 9 .. ,.- . - ..> . . , . , * , . , i. ma r i b s ~sst-drthmst of ~ h i s ~ . ~ a ~ ~ o ~ . , . - - . .h , -

' . " ., . - I

2; Dada-Winters Flight Str* i s a dingle strip landing f i e l d augnmnted by fie1 s e m i ce p i t s , oontrol t a e r snd barracks.

- . 3. F U C t strip i s u s e d f o r transition *d ing , t&e-off8 and landings .

- - 4. It i s reclormaended that the Davis--tern Flight S t r i p be

p k c e d cm an imctive s h t u s dpe t o the t r ans f e r of tnining activi- t i e s from t h i s station.

5. This s t a t i o n will kme no furhter use or ready d a b f o r th is fie Id.

6. The e n t i r e f i e l d i s ava i lab le f o r use of my ngacy which as- sume s ju r i sd ic t ion over it.

7 . Date of ava i l ab i l i t y , 1 Octaber 1944.

8. Contractual C d t m e n t s , none.

9. It i s recommnded t h a t t h i s air f i e l d be t rans fe r red t o the C i v i l Air Patrol.

10. lone.

/s/ C. Ti. fin, Colonel, f4ir Corps, Comnrmding.

APPENDIX C-6

U. S. Army Air Corps, History of the Hamilton Field Air Base Area,

California, dated Febmary 1929 - 31 March 1944

HISTORY OF

HAMILTON FIELD AIR B A S AREA CALIFO-W IA

HISTORY OF

HAh6ILTOiri FIELD B f B BASE A.EEL4

FEBRUARY 1929 - 31 U C I I 194LI. Narrative and Appendix ' A '

The Seventh Bombardment Group demonstrates i ts 15-16 a b i l i t y with B-17's i n a e r i a l ceremmy h m o r i ~ g Lieutenant Colonel David M, Meyers, r e t i r i n g .

Five huvdred (500) men t ranspor ted by a i r t o 16 scene of West Coast war maneuvers from Hamilton Fie ld t a March Field,

krch 1940

0~ 1940

The Big Flood a t Hamilton Field, 20

Hamilto?, F ie ld becomes a Recruit Training Center. 58-59

The 45th A i r Base Group is ac t iva ted , 27

The Seventh Bombardme~t Group, 88 th Reconnais- 17 sance Squadron, ard the F i f t h A i r Base Squadron depar t Earnilto- Fie ld for S a l t Lake City, Utah;

The 20th Pursui t Group and t h e 35th Pursui t Group 18 a r r i v e from Moffett Field t o make t h e Tenth Pur- --C----

s u i t Wing at Hamiltor Field.

Hamilton Fie ld is o f f i c i a l l y c h a ~ g e d from a born- 17, 18, 22 be r into a f i g h t e r baseo

"Splinter Ci tyn i s completed avd a s a i m e d t o t h e 20 p e r s m n e l of the Tenth Pursui t Ting.

The 20th Pursui t Squadron of t h e 35th Pursui t 22 Group is ordered t o t h e Phil ippines; i s replaced by t h e 34th Pursuit Squedron *om Brooks Field, Texas.

The 1 8 t h Pursui t Squadron d e ' p r t s f o r Anchorage, 22 Alaska; .is replaced by t h e 70 th Pursui t Squadron.

BP$giedie~; General Millard F, Harrnm assumes corn- Append. tlA* mand of Hamiltor, Field, (NOW L i e u t e n a d General)

The following sub-bases acquired: Ogkland Mud- 24 cipal Air Port ; Milla Field, South San Francisco; Concord, l?apa, hov i l l e , Redding, 1.. -Sacra- - mento, Sarita Rosp, Willows, Xinte~s-Dayi 's; i ;., Bay- ward, Marysville, a d lontague, ' .

. .

defense p ro

mts f o r t h t i t yeur ~ i l d ro r lcen t ru te ugon events subsequent t o 1941.

In b r i e f , t h e !xmi Lton F i e l d de:'ense ;7lrins for 1941 mdy be d i v i d e d i n -

me main p e r i o d s : (1) An i n t e r i o r Kuaru furnished by the 1:j.r Sase

In Janutiry of 1941 a n w s a t oi' sase Ganrci , :egula t ions v ~ u s p u b l i s h e d ,

ing up t h e guard system o f tiici r o t a t i r i g p a r d s e c t i o n (45 th Air 3hse

l t r 7!)A,-?u~,Sg. t o CO, 20th i'ur Gp, d t d as

UNCLASSIFIED

' On 10 July 1941, u l l Uaso p l a n s vlerc re~nodelad t o comply w i t h !a) T r a i n i n g C i r -

cular No. 47, vrhicil d i r e c t e d t h e ?eri'ectlo!l of a d e f s n s e p lan embodyinx tize

~cle thod s , I n b r i e f :

1)anmge Lont roJ O b s t r u c t i o n s 9ec:eptive ! b u s u r e s 1,ALne s S ~ F : l t a r A l a m S y s t e n

AGTT ifl; i,. V ~ ~ 7 T - P ' ' l; L- i;.:~:., ;.J.'ltrS!T?iI;;S - - - - - . - - -. - Lhpltrcemcnt ~voupons Y nd seurch1i; ;hts . i&innini; o r vrenporls Local counterattack.

Curing most of t l le ;;eur, the Yrovost i k r s i ~ u l v?1*3 0ccu;)ied i n ? r e p a r i n g

; elaborate plans f o r dcfonso, e~nbodyln;; t h o "'iT:lit;e P l a n " , which was t o b e sub-

nitted e a r l y i n 1942. l i c t i ~ e d r i l l s wrc: he ld d u r i n g t h e trainil-11: program;

the 35th 1)i.lrsui t Group conducted y r c c t i c c i n a i rdrome defense durin:; Septem-

ber and October of 1941. I!obila 3111 c r w s wore o r g a n i z e d ; p e r s o n n e l d i s -

: persal crews ~ s s i g n e d ; . c o n t r o l c e n t e r s d e s i g n a t e d . Sa e f f e c t i v e was the t

I !:.plan t h a t it was pluced i n i r m a d l u t e e f f e c t on 7 Ijcceniber 1941 w i t h l i t t l e

disruption of' n o . ~ i u l func: t ions oj ' the a s e .

j L f t e r 7 D e c o n h r 1941 u l l p r e v i o u s def ens a p lnns were t r e n e n d o n s l y ex-

panded. The iftimilton P'iczld l n t e r i o r [:uuru sjrstelrl was n o t adequate , of c o u r s e ,

t o provide f o r t h e e x t e r n a l de~'.'ensc: oi' t h e Wso; t h e r e f o r e , vur ious u n i t s of

the Ground Yorccs ware rushed t o t h e dasu under t h e c o n t r o l of t h e i i e s t s r n De-

Xeserve, v i t h a complement oi' s e v e n t e e n ( 1 7 ) 1l:;ht tl;nlcs a r r i v e d bnfo re 15

s to ry of the Hamilton Fie ld A i r B R S ~ Area, 1929 - March 1944

A l e t t e r of 21 M~rch lgL2 out l ines the protect ion of Hamilton Fie ld

Sub-bases from the four main types of expected at tack: (1) Sabotage from

(2) sabot gee reic! from without; ( 3) a t tacks by parachute and/or airborne

troops ; and (h) anti-eircref t protection.

This plan out l ines the complete d e t a i l s embodying al l the passive and

active details O f defense mentioned i n the discourse above, and., u t i l i z i n e

(1) A i r Base Squadron i n t e r i o r guards; (3) Pursu i t Interceptor Squadrons;

and (3) Ground Forces assigned to the Base; i t remeined the act ive defense plan

for Hamilton Fie ld during the period of danger from enemy attack.

By 1943 the danger was so lessened that the colored Guard Squadrons

outl ined i n Chapter V were activated And assigned t o i n t e r n d guard duties,

Late i n 1943 tile various Ground Forces un i t s began to be moved away from the area,

and as of 1 January 1f34.4 the 46th A i r Base Srru~dron (and l a t e r the 460th AN?

Base unit) prepare$ to take over the en t i r e f'unction of in te rna l and external

loca l defense of the :Base.

Training

In 1941 Hanilton Field became a bzse fo r the f i gh t e r un i t s operzting

under the 10th Pursui t Wing. The main un i t s under the control of the Wing s e r e

the 20th Pursui t Group and the 35th Pursuit Group. While s t r i c t l y t s c t i c a l

un i t s on paper, these pursui t groups also served as t ra in ing a.gencies fo r p i -

l o ts, and s a constant source of trained personnel i n the formetion of new

uni ts . Durine 1941 the 1 4 t h ~ 5 l s t . 54thr and 55th Pursuit Groups were ac t i -

vated with personnel drswn l s rge ly from the 20th pad 35th Pursui t Groups; these

new u n i t s were ultimrt;e3.y assigned t o other bases before the end of 1941.

I n February 1942 the 78th Pursuit Group ceme to Hamilton Field from

Baer Field, Indiana. Its p i l o t s were the first here to the drasticall-

- 4 - <;, -: ; ;qy-;.,- j-J \ . . .t-L' '

UNCLASSIFIED i rch 1941. I

.......................

, :!~:?si:n-;f, 2 r ~ l ? c : , ; c ; ; : ; ; i ; , , 1 . 1 ; :;)I(; !ii> t i on f : I. r ' 1 ~ } ~ i ~ m p -

APPENDIX C-7

U. S. Army Air Corps, History of the Hamilton Field Air Base Area,

California, 1944

I?IS?ORY OF THE

HkXILTON FIELD A I R BASE AREA

1 Apri l t o 30 Apri l 19L4

Prepared i n Kay 194 i n conplianco with AR 345-105, AAF Regulation 20-8, and Directives of t h e IV Air Force

Fourth A i r Force, San Francisco, Ca l i f .

Hiil.1.q Fie3 d Army A i r F i e l d Hayward. Army A i r F ie ld .., . i.; l n t s r -3av i s F l igh t Strip Kapa F l igh t S t r i p hlarysvil.l.e krnly A i r F i e ld Santa &,s6, Army A i r F ie ld Orovil-Je Army A i r F i e ld Redding Array A i r F ie ld

CKO, USA, His tor ica l Off icer

APPROVED :

CHARLES R. :!ELIN, Colonel, A i r Corps, Commanding.

tory of Amy A i r Bnse, Hamilto11 E'ld, Cal i f . 1 A p r i l 1944 - 30 Apr i l 1944 - - - - - - - - - - - - - - - - . . . . . . . . . . . . . . . . . . . . .

O f the above mentioned t roops and t h e i r impedimenta wtis accomplished with-

art further d i f f i c u l t i e s .

There was cons iderable change i n Apr i l i n regard t o Sub-Buses a s s i g n e

t o Hanilton Field. Since t h e primary miss ion of t h i s cormand area pivoted

&my fron s t r i c t l y t r a i n i n g opera t ions t o processing out , t he re was no

rlrrible or p r a c t i c a l renson f o r r e t a i n i n g a h i n i s t r a t i v c c o n t r o l over a

variety of' Sub-Bases upon which wore h s e d a number of f i g h t e r t r a i n i n g

units. k number of cliff i c u l t i e s a r o s e concerned with accoun tab i l i t y and

supply j u r i s d i c t i o n a l p r oblemc , most of whioh a c t i v i t ies were f i m l l y

transferrod t o t i i t : c o n t r o l of Chico Amy Air F'i eld. F i n a l l y , on 25 Apr i l

1944, the following Stib-Bases were t r n n ~ f e r r e d from t h e j u r i s d i c t i o n of

1 W l t o n Fie ld t o t h e Chico Army A i r F i e ld Command area :

l.!arysvi lle Army A i r F i e l d , l.!arysville, Cnlif 'ornia Santa Rosa Army A i r Yield, Santa Rosa, Ca l i fo rn i a Oro7sille Army A i r F i e l d , Orovi l le , Ca l i fo rn i a Hedding Ann:/ id r F ie ld , :leddine;, Cal i fornia .

Thus, a t tile end of A p r i l , t h e Anmilton Y i e l d Co1:~11~.ncl Area r e t a ined

under i t s command only t11ose Sub-Dcses l oca t ed a t M i l l s F i e ld , Haprnrd,

Concord, the Xinter-Davis V l i @ t S t r i p , and the Napa F l i ~ h t S t r i p , a l l

of these bases being locaxea i n Cal i forn ia . A c t i v i t i e s on t h e s e bases

mre routine i n general aud mainljr concerned with housekeepini func ti ons.

In connection vri t h t he t r a n s f e r of a l l Fourth A i r Force u n i t s of t h i s

atat ion under t h e c o ~ t r o l of the Cor:m~dinf; Off icer , a s p e c i f i c t r e i n i n g

rograrr. involving a l l e n l i s t e d and of f ' i cer personnel was inaugurated.

, Fourth AF GO #4, 25 A p r i l 1944 (Appen C , Doc. 111)

- 1 3 -

Ld HdZTT09 FIELS - (460 th ,,S Base Uni t ) -- Suh-Bases - ----

kuxi l iary Fie ids

iGont agu e iiunic i p a l .;irport Willows hirf i e l a 'vl 'i~ters-Davis Flil ;ht 3 Lrip

U n i t )

nit)

JNC

HISTORY OF THE HAMILTON FIELD A I R BASE AREA

1 May t o 30 June, 1944.

Prepared i n July 1944 i n compliance with AR 345-105, AAF Regulation 20-8, and direct ives of the IV A i r Force.

FORlER DESI GIATI ONS : NONE

Fourth Air Force, San Francisco, Calif.

UNITS ASSIGNED OR ATTACBD:

lidills Field Army Air Field Zayorard Army Air Field Willows A m y Air Field Winter-Davis Flight Strip Napa Flight Strip

APPROVED :

Colonel, Iiir Corps, !

UNCLASSIFIED

HISTijKY OF THE IiJilAXLTON FIELD U X BASE AREA

1 J u l y t o 31 Ju ly , 1944.

Prepared i n A u y s t , 1944, i n compliance w i t h XR 345-105, 1 Regulat ion 20-8, and d i r e c t i v e s of the I V A i r Force.

PRXSXNT ASS1 GHFENT :

Fourth Ai r Force, San Francisco, Ca l i fo rn i a .

UNITS ASSIGNED OR ATTACHED: !

Havward Army h i r F i e l d , Hayward, Ca - - A pe

Concord firmy hlr r L U A U , ------ Xinters-Davis F l i g h t S t r i p , V I W ~ - - - , - - Xapa Bl igh t S t r i p , Mapa, Ca l i fo rn i a .

Colonel, Air Corps, Cornmanding.

Budget and F isca l u f f ice taxes over audi'ting of non-eppropriated funds.

Presentation of Awards ceremonies f o r L t . nil3.iam F. Kahn, Sergeant Joseph Flory, Cornoral Kenneth b. Nelson, and ~ a p t a i n James Lcmbuth.

lnformation received t h a t the J'rocessing Sta+,ion rioul~d be moved t o ricc;hord Field, t'i a shington . Concord Army A i r Field, Concord, Gclifor- nia, transfe:rred from jur isdic t ion of Hamilton Field.

i~inters-Davis Fl ight S t r i p , Viinters, Galif- ornia , t ransferred from jur isdic t ion of ~arn i l&n Field.

Advance party departed f o r r:cr;hord E e l d , Viashington, t o s e t up processing out a t t h a t s t a t ion ,

A i r aedal presented t o the cidoc of s t a f f Sergeant James F. Svotjeck

Jack Benny, Carole Landis and company put on shon in Amphitheatre.

lnformation received from Fourth A i r Force t h a t t he Processing Sta t iov ~ o u l d not be removed from t h i s s ta t ion ,

Statement of Brig. Gen. Jemes E. Yarker, concerning the r/ing setup.

iieekls sarvey inspection begun on Base by Headquarters, Army A i r Forces Field A i r lnspec to rs , Washington, D . C .

I

Page 19 I '

Yage 25

Page 6

Page 3

Page 6

page 26

Page 6

rages 4, 8

Yage 9

IIistory of t h e Hamilton F ie ld Air Base Area, 1 J u l y t o 31 Ju ly , 1944. .....................................................................

I On 1 J u l y t h e fo l lowing sub-bases were a t tached t o t h e liarnilton

Field A i r 8ase Area f o r c n r e t ~ k i n s and p a r t i a l operat ion:

IIayward k q A i r F i e ld , liuyvmrcl , Cal i fo rn i a , Concord Amy A i r F i e l d , Concord, C a l i f o r n i a , Winters-Davis F l i g h t S t r i p , ? l i n t e r s , Culif o rn i a , Napa F l i g h t S t r i p , IJupu, Ca l i fo rn i a .

On 8 Ju ly , command j u r i s d i c t i o n of Concord Amy A i r F i e ld was

transferred from Hamilton F ie ld t o t h e Army A i r Forces western Flying

1 Training Command. Also cln 8 Ju ly , t h e Clinters-Davis F l i g h t S t r i p

was t r a n s f e r r e d from t h e j u r i s d i c t i o n of Iiamilton Bield t o the MIII~

Air Forces % s t e r n F ly ing Training Conrnand , e f f e c t i v e 15 July, 1944. 2

Thus, a t t h e end of J u l y t h e r e remained a s silb-bases of Zlumilton

Field only Hayward Army A i r F ie ld and t h e 1Japa F l i g h t S t r i p , which i s

entirely uninhabi ted.

Personnel changes and t r a n s f p r s were s l i g h t throughout t h e month.

[)n 18 Ju ly , t h e personnel of t he Iiescue Boat Detachment were t r a n s f e r -

red t o t h e 411th Army A i r r'orce Base : . n i t , wi th c o n t r o l group a t Berke-

ley, Ca l i fo rn i a ; no change of s t a t i o n was involved.

On 19 July, Eiattery B., 747th Ant i -Aircraf t Automatic Veapons Bat-

talion was t r t insferred by verba l orders irom Iitlmilton i> ie ld t o San Fran-

~ i s o o . ~ On 26 July, t h e e d n i n i s t r a t i o n o f a l l colored personnel of

Sec. E., S t a t i o n 11, A i r Transport Conmand, was t r a n s f e r r e d from t h e

460th Army A i r Force Base Unit t o t h e Air Transport Command.

1, Appendix C. , Fourth Air Force General Order #117, 8 J u l y 1944.

, Ibid.

, ~ d j u t a n t f s Duily Diary, 19 Ju ly 1944, on f i l e i n H i s t o r i c a l Off ice .

APPENDIX C-8

War Assets Administration, Preliminary Report 300.04, Winters-Davis Flight Strip,

Yolo County, California, n.d.

~ ~ P I I H I I Q ~ ~ fe Wo elaotiio purrp i r m rP&r~iaocrl-&inr, wed u rrr f i t t i i l ly . pl#hg a p f m &a s b ? & P o r $ d 0 ~ 1 8 b d u 14' r i n and kn l h e r o f 8 rwfma in Wto hmuing rrrrar ?hwe are k+ wabr rye6 .u in tho uorr hrll ma k b B bower * '

k, Pire Webratim~ fn ehr, bui-g war, Wra u o $wo w m k C awi , d$h li) irrh mLlwct erttm b1., appa~~t- .

mhr pmp alrp fire a~ib@rhrrr bofh ia# id~ , u t d .9b -. 6

HaSTERS - U V I S FLIGHT STRIP I .

YOU) COUNTX. CALIF-

The Winters-Davis Flight Strip was used for the production - I

of grain and l lvestack when it was acq&d. Barley and rioei were

Traat No. ll (Block 6; Sahedule 0 ) was ueed . for a 'farmstead

and' pasture whsn acquired. It was a, portion of a 160 acre -1,

of land reserved by the owner for. a ,farmstead. The maraining portion /

of the 160 aure parcel-waa leased for agricultural prnpoaea,

LEGAL D3SCRlPTION OF PHOPEHTY

Traut 10(Co~t inued)

8 Worth, Bsnge 1 Eeet , If. D a B o 6 EXCEPTIRG TIIEREBHOK the 'lVest 1026 festo

me dimnsions of the Southwest Quarter of section 3 nre oomputed to tho oenter o f sbuttin;l; roadso

The follo~inc described truct or land e i t a s t e i n the County of Yolo, S t s t e of Calffornis , dsscrihed a8 f o l l w s , to-wit r

PhRCEL .ti: A11 that certain reul property 6 i t w t 9 i n Yolo Cormty, ~t~te-fornia, being e portion of the Southanst 1Q.srter of Section 3, Tomahlp G Worth, Hanee 1 E a ~ t , r. Do F. 8: V., mro p a r t i e d ~ r l y deacribod o s follows r

\

9 % I H ~ T N C at the quarter corner comav to Section 2 and 3; thenue Sebterly alorq the %st. nnd ;9est center l5ne of 8 8 i d Section 5 , 72e040 fe9tg thence South 1284.05 feet, mra or less, t o n point on the center

i l i n e of Tiillow Slox~p,h; thence along the aonter l im of a e i d 3ilIarr Slouch + the following courses:

North 31' la0 30'' Ennt 203.11 fas t ; Worth 26' 25' 39" 6aet 401.22 feet8 thence North 0' 15, East 40036 feot~ thsaad North 00' emst No99 feetg thence North 37O-67@. 50" Eaet 1860e5 feet; thenca Eorth 46' 160 50" East 126088 feet; thence North 580 049 20" Eaet 99*97 faotj thence North 68O 16' East, 101.75 feet; thence North 81' 25' 20" Eerrt t o the point o f i n t g r ~ e o t i o n of the center l ine of s o i d 8illow Slough wit& the EssterXy li-m of aafd Section 3, sa id point beam South 343&S fset from the East $mrtar corner of s s i d Seotion 31 theme leaving t h e aenter line oP W l l w Creek along the said Section 3 North 343e68 f e e t , more or lei&, t o the point of be~inningo

PARCEL 0 1 Beginning at e point on the Yast nnd %eat aenter line of e d d ~ s c a o a 3, m i d point k i n g d3 stont Xest 72604'3 feet from the Eaet quarter corner of eaid Sect ion 3; theme Vesterlg along ss id East end Jest center line t o the Morthrssst earner of the Sotithenst Quarter3 thrice Southerly elong the lorth end Sotlth aenter line of s s i d Seotion 3, a d j stance of 50 feet;; theme Easterly p r ~ l l e l to and d i s t n n t 59 feet at rlght ancles from the % s t end 'Rod center l ine o f eaid Section 3 t o a point xhich is dietant South SO feet from tho point of beginning: thence IVorth 50 feet to the point of beginlliw.

Blook 6, Sohadule A Pace 5

Ttsct 6 ( Continued)

being t,ho S$ of Section 34, T o 9 No, 3 . 1 Eo, k O, I!., f i l e d for record fa t,he office of t he C o m t y Seoor4.er of tho C o m t y of Yo10 on Hsrch Sth, 1909 i n Book 2 of ?,bps, at pare 1 3 .

The f ' a l l o d q described t r sc t of land sikunts.in the Coufity of Yolo, Stete of Cnliforni~, described a s follows, to -w i t :

Lot 4 i~ Block 14 as s h ~ m on tho T'ap o f Lucerne Ferns, bcing t;33 ~ 3 - of Seot lon 34, To 9 i4so Re 1 E o , Y. Do B e k P o , filed for record in the o f f ice af the ComLy 2ocordsr of the County of Yola on Yerch 9th, 1999, in Book 2 i\f En pa, 2t paTo 13-

4 < Trpct f?

The followifl?: described t r n c t ~f 1~nd situate Ln the Cow~ty of Yolo, State of Cnlii 'omia, described ns follcm, t o e i t :

Xats 5 and 8 in Block 14 as shown on the Ihp of Luoerna Ferm , being ths Sg of Seation 34, To 9 No, i?, 1 E., I:. D. P. & Y e p filed for rscord in the office of t , h ~ Oow* Recorder o f the County of Yolo on ?!%rch 9t11, 1999 in Book 2 of b p s , nt page 13.

Trac t 9 * ?.

T)le follorrine deecribed trsst of l s n d sitwate i n thu County of Yolo, S t n t e of Cdifornie, descrihod per f o l l m e , to-witr

The ?Jorthwer;t quarter of Section 3, Township 8 florth, R m y t 1 To&, IF. D. ' l o b Y. , GXCE13TlNG TI3ER3FftOlq, 'tho ?est 1025 feet of said I.:orthmesS, *;m rter

The ocrmge snd dimensions of the Iorthweat 2uarter of Sect ion 3, are ca?nputed to the centar of abutting roads.

The following described trect of land situate in the County of Yolo, Sta te of Cal i fornia , dsscribsd as fbllowa, to=h%t z

The Xorth 24965 feet of the Southwast quarter of Section 3, Tawnahip

Block C, Sohedale A Paze 4

. . SoFoI(.~5 Report

LEGAL DESCHIFTION OF PROPERTY ' '

Trsct 2

The following described t r u u t o f l m d situate i n the County of Yolo, State of CaliforAda, d e s o r i b d ss fol.loucrs, to-wit r

Tho Tc?ort;hwest :t~artor of Section 34, T m s h i p 9 Forth, Range 1 Rest, Ye D. E, & L, EXCEPTING TWEREFROFI, the %st 1.325 feet of enid ?lorthmat (W~rter of Section 340

The mbovs deecrihed property being a l , l ofa l a t e 35, 36, 47, and 49 and thc Rnsterlp yortton of Iats 317, 34, 4 5 erzd 46 of Berry Vala Gardens, nocordin? t o t% m p of' 8 r t i R Subdirision f i l e d for reaord i n t h e o f f i c e of the County %corder of the County of Yolo on July 19th. 1910 in Book 2 of $%pa, 4% pap9 2 h

The eoreRge ond dinensions of tho a h v e desoribed property ere oomputed to the center of mbq~tting roads. %

Trnct 4

'The following described t r s c t of lmd s i t u a t e i n the County of Yolo, State of California, described as follows, t o d t :

L . . Lots 1 and 2 in Blook 14 as shoun on the Kap of Lucerne Paras, being

t h e South one-hnlf of Seotion 34, To 9 OR., R e 1 E,, Mo Do- B + d: I., filed for record i n t h e offioe o f the County R~oorder of Yolo Co*mty, Yarch 9th, 1909 i n Book 2 .of We pa, at;pace 13. :

The dimensione of ohwe property e r e cotnprated to the center o T e 20 foot avenue on the &st snd a 20 foot avenue on the i b s t , ,

Tract 5

The following described t r e a t o f lnnd situate in the County of Yolo, State of C ~ l i f o r n i a , described as follow3, to-wit:

Lot 3 i n Blook 14 ss ehmn on the tc'pp of Lucerns Ferns, being t h e ~1 of Section 34, T. 9 !?. , R. 1 8,. M.. D. 4 Do Q 3.. filed for record i n the off ice of t h e County Reoordar o f the Cotraty of Yolo on Waroh 9th, 1939, i n Book 2 of h'aps,.st p g e 13.

The follow in^ descrfbe8 trnct of land eituste i n t h e Coranty o f Yolo, Li St9t.e of C s t l i f orcia, descri3ed a s follows, to-wit a

Lots 6 and 7 fn Block 14 ae, ~ h m on t h e Ihp of Lucerne Farms,

Block 6, Schedule R

-I

. \ ,< -

4 . .

i , 'r"3TVJWS-DIIYSS FLIGHT STRIP " ' 1 . - I

8 .

YOLO C@?VTY, ChLIFnKNfA A , .

A +,- .; 4 . I

t ' - , . ? S.P.Bl-5 Roport 'L , :I -

, + , A , . , LWhI, DESCQIPTIC$ 3F PROFE3TS '

1_ , - - 1 ..

line of m i d Section 3, sa id point bears Sou-th 343.88 ft . , fbn! the East quortor comer of ss+d Section 3, theme' leaving snid aenterline of Xi3low SLau~h along the Ens% l im o f s a l d Seotion 3 b r t h 343.6 f t . t o the %st q~arter corner safd Section 3, running thanoe Resterly nlorq: the

:?$orth 13ne of' Southea~t quarter said Seotion 3 rr distanoe of 2640 f to -' mre or lees t,o tho Worthwest corner thereof, running t h n o e northerly

elonll; the ess ter ly l ine of a the Northw4sk quarter or said Seotion 3 e?id the eestarly line o f the \Vest h a l f S.ttotion 34,'Toanship 9 North, Haage 1 Fost, Mount n i ~ b l 0 Base & X e r i d i ~ n ~ e distanoe of 792000 fto mre or lees t o the northenat corner of' s 4 d pest half" Soation 34, running t b n o e westerly long the northerly l ine of sa id Zest half' Section 34 a distanae of 264O00 ft. more or less t o the paint of beginningo

?hepting therefrom ell Ifinarel, O i l snd other Eydrocarbon subetance - \' .: ' I

Containing 307.93 scree more or. less 'in'fee. - . . ." ' L C ' , p . t - : . . , ,

, . ..>. 7% , " I , 2 s,, I . : .>,< A ..:- ,

. z . , ' . - - . - .*A - .Y 1. - sr ' . - L . I . . A \

? ., -r ,, " . . $ 7 ". . -. .:' ,a:, , . ' , . I . 1 I "i _ - ...;. - 1

i ..:, I " . . . . . . - - . - ,

. . h ..

L

a b

j .

, I J , . , I - \

* % - .- , . . I . - . I , , . : - /. ' -: I . .

Block 6. ~ c h s d u l b d . - . , .

Page 2 t. - , .

LEGAL UESCRI PTlON OF PROPEHm

That r e a l property situate i n .thd.~&&'of Yolo, S ta te of I California, b i n g a portion of Rerq Vale Gardens and Luoerne Farm

lying w i t h i n the Gest half Seotion 34, Tomehip.9 North, .+qe 1 Eaet, Ebmt Diablo Base & btoridian, acaording 'to tho maps of said subdivisions as f i led for record i n the offioe of the Coimty.Reaarder of the County of Yolo on 19 July 1910 i n Book 2 of b;aplr, a t pace 27 and tha t portion of Sec t i in 3, Tonnehip 8 F!orth, Range 1 East, Mount D i ~ b l o E ~ s e , i) Nridian more pa r t i cu l a r ly described 'as' f ollowm

* . . , I .

Peginning at a point on the northarli-'line of Soction 34, T o m h i p 9 North, Range 1 Eaat, Mount Diablo ~ e s b &'Eeridian, dietarrt ens te r ly along anid northerly l i n e 1025 f t . f romthe northwest oorner, running thence eo~\fherlg distant 1025 f t . ee.eterly a t r i g h t angles -ta tho m s t e r l y line o f Section 34 a dietanoe,of -3966 f t . more o r less to n point on the north lint, of lot 1 blook 13'Luagx-m Farms Subdivision, thenoo E ~ B t e r l y alone the north ling o f aftid 'lot 1 bloak 13 t o the northeast aoraer thereof, thenoa g02therly~along the Easterly line of

, l o t s 1, 4, 6 and 8 blook 13 e dietanae:"of . l320ft~~wre or l e a e - t o a . , s p o i n t o n t h s n o r t h e r l y l i n e of ~e~tioa,3,:.;Totrmship8 North,Range 1 East,

I - .' I ' Eoimt, Dinblo Rase i Ihridian, theme ,'ue6terly along the nortfterly line ,, .. . .: of said Ssotion 3' t o R pint dis tan t :ens-$erly 1025 f t . from t h e

L * I

. 4 .. northwest corner said Section S,,'thenoe:aouthqrly distant 1026 f't. : .. . eas t e r ly a t right nngres from the westerl'g , l ine of said Sectf nn 3 a

distsaoe of 2880.d ft. mare' or 'less to a p o i n t 240.6 ft. eoutherly from the north lino of the S~uthwest'~uartek',said Seotion 3, theme E~uterly para l le l and distant aou-Lherly 240-6 ft . at r igh t angles from tho

, northerly l i n e of the a o u t h e s t , : q u a r t e r of m i d S ~ o t i o n 3, 1616 ft, , more or lees ta a point an the. easte<r-ly'line of sa id southrsreet quar te r of

. Section 3, .'running thence norjherly along the ' eas t e r ly line of said '

; aouthwe~t quarter a t d i s t r n w ' o f ~ 1 9 0 g ~ ~ f ' f ' ~ ~ more o r less ta r point SO fto '

, , -<

, (southerly from the northees t , , c o ~ ' r ' ofkseid ~ogthtnest quarter, mnning . * - . . thenoe 'easterly, para l l e l ar.d . d i s $ a n t ~ e o u ~ e r l y W' ft. n t r l e h t engler ,

from the northerly line of the: t ~ o u t $ y ~ ~ f ihuartar said Section 3, s ' . diatnme of 1913.60 ' ft. Rora or . ~ l e h a ' ~ , , t o ' ~ ~ ~ ' ~ o + n t 50 ft. aouthsrly end .

726.40 ftc f ron; the east quarter oor@r, said Seotion 3, ruming thence fron sa! d point. South 12k.05 Ft. to .a {point on the centerline of lillow

: . Slough thenao slang' the oenter of ' said?if l l& .Slough the fof lowing

b .

aourseer North 31°'13@ 50" East 203011-ft., thence North 26 26' 30" East . 401 *12 f't., thenes North oO. 15 ~ a s t '48: 36. ft., 'theme North 300 00 East '

30099 f t . , thence Sodh 37' 67 1 50" .Faat 186aSS "ft., thence North 4 6 O I6 ' '

. z / . I

1 - 50" East 12S088 f t . , theme Borth 6 8 O . 9 4 ' ' 20n East 9!1097 ft., thence Horth '.- . . - ' 68O 160 Enat 101,76 ft., thenoe Forth 0I.O 25' "20". East ' t o tb point of

. \ ' interseation of tho center l ine 'o f aaid. Gillow Sloush, with the Sasterly . ,

,, T. .. - * -. 5 - 6 r , 8..

. .

, a BZook 6,. . , < Schedule - A Page 1 ..' .,, . ,. '. . .

CIVIL A1 R PATROL - A w AUXILIARY OF THE ARMY AIR -FORCES

C IQight, Sacremento Squadron 801 M e i n Street

Woodland, California

12 September 1944

,%EJECT: Use of Winters-Davis *Tight S t r ip

TO : Colonel Karl C. Pyle, Cormending Officer, liather Field, Sacranento, California

TEBi : Captain w e r t 3. Berguson, Adjutant, Xather Field, Sac:ramento, California

1. The Voodlend R i g h t of the Civil A i r Wf ml request permission t o use the Tinters-Davis Flight S t r ip t o ce~my on Cadet ~ c t i v i t i e s s imilar to the Sundays of 30 July end 6 August.

2. It is desired to use the stri? the Sundays of 24 S e p t e e r 1944 and 1 October 1944.

3. A t the end of our operations the afternoon of 6 August, approximately eighteen (18) gallons of 73 octane fue l and ten (10) quarts of o i l remined unused. Upon checking at the s t r i p the other day, it was found the fue l was still there. I f additional 73 octane fnel cennot be supplied arrangemante w i l l be made t o purchase it f r6n a loca l Oil Campang.

4 It is my uuderstanding, because of a change in operations, the Winters-Davis Fl ight S t r i p is to be closed in the near future. Do you think it would be possible t o have the strip asaigned t o the loca l C. A. P. Flight t o oversee, guard and use i n its ac t iv i t i e s . It would give it a base fram which to operate, create still more in te res t in the program and stimulate the Cadet act ivi t ies . The l o c a l un i t could keep the s t r i p fn operating condition so i f the A. A. F. found they needed it again it would be ready f o r immediate ase. 1

2nd Lt. Civil air Pat ro l Flight Leader

APPENDIX C-9

Yolo County Planning Board, Yo10 County Airport Master Plan,

Yolo County, CA, 1976

5, Enviromiental -s tudy.

6. Airport Layout Plan.

7. Land U s e Plan,

S. Schedules of poposed Zevelopment.

9, Estimates of develol~ment cost.

10. Financing and economic feas ib i l i ty . Inventorv

The Yolo County Airport i s a p b l i c l y ovmed general aviat ion a i rpor t , but u n t i l recently has remained essen t i a l ly undeveloaed, and i t s 6,000 foo t _nsved runway has been used cssual ly by cro:; dusters o r f o r t r a in ing o p r a t i o n s i n i t i a t e d a t other a i q o r t s . Since the construction of fue l and a i r c r a f t hanger and tie-down f a c i l i t i e s i n 1975, the a i rpor t has begun t o accept based a i r c r a f t and has develo2ed a s an oserational a i q o r t . .Iccor2ing t o the 1974 Xegional General Plan Aviation P l m and Brogram rel la red by the Sacranento Regional Area Planning Commission: " It is expectee t h q t t h i s a i rpor t w i l l continue to develoa and exgerience increased demand f o r i ts f a c i l i t i e s . " -

"In t k e Long term, t h i s a i ~ y o r t could acce2t excess demand from lJniversity and I:?oodland i f any thin^ were t o r e s t r i c t demand a t these f a c i l i t i e s . Because of i ts avai lable cacacity, t h i s a i r p o r t w i l l continue to serve t r a in ing Pl ights originating a t other a i r p o r t s within the region. "

The U.S. Govemnent i n i t i a t e d tk construction of the Davis-Vinters a i r s t r i p , now ca l l ed the Yolo CountyAirpor+ i n 1942 t o provide a l te rna te basing f o r B25's normally located a t 24cClellan A i r Force 3ese. The i n i t i a l construction v~as b e ~ n on Ju ly 20, 1942 an2 completed on 3cto3er 29. 1942, P i n a n c l n ~ was e n t i r e l y from Pegeral fun& establ ished f o r the constructioil of f l i ~ h t s t r i p s . The i n i t i a l construction consisted of cjrading a f l i d l t s t r i l 300 Ceet wide by G,000 Ceet long and surfacincj the 150 foo t cen t ra l i~or'cion Cor a length oZ 4,000 feet .

Subsecpsnt constrnction i n 1543 by the U.S. A m y Cor?s or Engineers included t3e coilstruction of 1,000 f e e t a t each end and <lie surfecing of the runwzy plus the building of the 10 revetleents. Durinr~ t he inter end 02 1942-43 the basement s o i l was of poor c ~ u a l i t y an6 t h e funway subnerged vllich suLsequently Lad t o be re?laced w i t h a rmre stable base material .

- Tn 1949 the f l i g h t s t r i p v72s ?laced under the a d d n i s t r a t i v e control af Yo10 County. A t t h i s time the Davis-Winters N r s t r i y was naiied

/ under the County's jurisdiction in 1958, public restrooms were constructed. In 1971, with about $30,000 of State Aviation gas tax and County money, a portion of the runway, 86 feet wide and 6,000 feet

I long, was resurfaced. The original runway did not drain properly, so the runway had to he mounded slightly and repaved. On February 25, 1974, the name of the airport was changed from Yolo County International Airport to the Yolo County Airport.

In August 1974, Yolo Aviation, Inc., known as the Fixed Base Operator, a leased 14.9 acres of the Airport and constructed an office and pilot lounge, 20 "T" hangars, a large maintenance hangar, and fueling facilities. Presently, services such as repairing and fueling the aircraft are offered at the airport.

Presently, the Director of the Yolo County Parks and Recreation Department, has applied for Federal Airport Development Aid funds amounting to $120,000, to extend the resurfacing of the runway to a 100 foot width, construction of stub taxiways, provision of a lighting system and a few m.iscellaneous items to increase the safety of the airport,

111. EXISTING AIRPORT FACILITIES

A, Description of structures and facilities

1. Physical features . .

a, The ~ i r ~ o r t contains approx. 430 acres

b. 20 "T" hangars

c. .A large maintenance hangar (100 ' X 100 ' ) d. Two refueling pits (a 10,000 gal. tank and a

20,000 gal. tank)

e. Tie-down area for 8 aircraft

f. Automobile parking area

g. Pilots' lounge and office

h. Public restrooms

i. One 6,000' by 86' runway, the ends being connected directly by 75' wide taxiways

j. Twelve dispersal taxiways

k. The West Plainfield Fire House and Lillard Hall

1. Abandoned control tower

m. Sportsman's Area (see Page 9)

n. Parachute Drop Zone

2. operations

a. Present use: In 1973 the County conducted a survey which determined the Airport had approximately 60 operations per day on weekdays. -..

J

Page 5 -

)

ation of Owners v~ho have planes based a t Airport:

Total Planes 29 (March, 1976)

WoodlanC 11

?linters 5

Valle jo 3

Dixon 2

U ~ ~ o ~ m XL; - <z

9, Uses

a, The Largest percentage of operations a t *e Airport consist of touch-and-go operations f o r instruct ional mr-mses . -

b, Parachute jmslnq

Leisure dusting

e. Sportsmans range f. Farming

10, Users a, - ~ i r c r a f t schools

1) Japan Airlines

2 ) From Sacranento, Executive A i q ~ o r t a ) Casitol Sky Park b) Patterson Aircraft Con2any

3 ) . Beechcrazt Flying School a ) Altair Aviation Inc,, Ekecutive Airport b) Woodland Aviation, Inc, Woodland

4 ) Cal Aggie Flying Farmers

5, Parachute jmpfng school:

1) Classes a r e taught on Fridays and Saturdays fron 1 2 : O O noon to sunset on Fridays,at 10:00 A,EL t o sunset on Saturdays Guring the winter months and dawn t o sunset during the smncr months.

2 ) Average c lass s ize is 15 peosle; class s i ze varies fron one person t o 30 peo7le per class.

3 ) On a good day, a c lass of 15 people can jump 3 or 4 times

4) Advanced yracl-ruting-can occur on any Friday, Saturday or Sunday,

5 ) A2xo;:irna-tety 300 different- peosle u t i l i z e the Airport fo r parachuting.

6 ) Ap2ro::imately 200. t o 250 j-a ger weekend.

71 Recorded . - jumps 2er month from 1375 t o Feb. . -

1976, m3mn 2

Accordin9 t o the Parks Del3artrnent recor- for lS75: Average number of jumps were: 5GS/month and 14;S/weel:enii

c. Crop Dusting Com?znies who use A i r F r t :

1) i-ledlock Dusters 2 ) Watts Agricultural Aviation

3 ) Onstott Dusters

4) Agricultural A i r - C m e Services (Dixon) , 5) Craig Aero (Button 07illov~) G )' ' J. f Dm Dusters (VJoodlmB, Anco Farms )

7) Aero Day ( ~ o b b i n s )

8 ) Fam Air, Inc. (sacramento)

9 ) Noe s Cro;~ Dusting Service (!?illiams )

(All the crop dusters use the conventional crop dusters exce-~t fo r the Craig Aero Company who occassionally fly a m,B, a larger aixylane)

nremises -

of being construci.ed

Association

1) Physical features (ap~ro::. 40 acres ) a ) Trap shoot b) 50 yd, ?isto1 range c) LOO yd, r i f l e range d) Archery range e) Duck pond f ) Pheasant cages ) A t r z i l e r used fo r clubhouse h) Storage areas i) i7atclman resides i n a t r a i l e r on

J Restroom f a c i l i t i e s are i n the process

I:) - A track Z0.r movinj targets

2) i.%xdxrshin varies between GOO t o 900 -peogLe, the averace nu-r oE nenb;ers i s GO?) peosie. (:Iany ~ e o p l e use the shooting ranges td2o are not menbers, b u t pay the $1.00 day use fee) -

PaQe i - - . -

3 ) Appro::imately one tournanent per rnon'dl approximately 300 people attendance de2endinc~ on the weather

/ 4- ) 1 following ac t iv i t i e s f o r

sign up f o r the c lass

handle and shoot a gun.

6 )

sumer, it is offered on

An annual turliey shoot including the comL3etition: a ) Pistol-running boar 5) Pistol-runninc deer c ) Rifle-running bear d) Rifle-runniny deer e ) Archery-running boar f) Archery-running deer g) Trap shooting h) Target shooting

I-Iunter Safety Classes

a) Offered monthly o r u n t i l enough people

b) Learn how t o trap and shoot and how to

Trag Shooting a ) Presently offered on Sunday b) Starting i n 2-ay and continuing i n the Wednesday nights. - - - . ---

11, Air Si3aces i n Service Area:

The. Yolo county Ai-ort f l i g h t paths and airssace are Pree of obstructions, (see map a)

12 . Other Airport Fac i l i t i e s i n YoLo County

~orges /~ la rksSurg , South River Road south of Freeport Bridge, public, qeneral ~v i+ t ion :El ihcero Country Club, 1 mile south of 1-i30 i n Davis, lx ivate , l i n i t ed t o 2rivate planes; University, 1 mile south of Cussell Boulevard, UCD. public, general aviation;Vattafi7oodland KJ corner of Road 943 and Route 15, u l c crag dusting:l~ledlock Dusters, South of Road 27 a t Road 101, Davis, c r o ~ dusting:Dan Best A i r s t r i p , N. of Koad 14, betveen b a d 113 & ~ o a d - 102, pr ivate , farm/gersonal:~. Threo Tanch. 1, s ide 2oute 1 G between Roads 63 t 69 , Cai3ay, private, fann/~ersonal ; ihr t in Broo. E. of Road 108, !i mile S. of 3oad 328, Davis, private, Fam/i~ersonal::-531L~an, E. oP Road 101, 1 mile S . of Road 24, Woo&nd, private. (See map b)

13. other a i q ~ o r t f a c i l i t i e s which are located i n the Service Area:

a. Vaca Di;:on, 4+ miles soutll~e.st 03 Dixon, private, fam/personal

b, 1:laine Prair ie , 4 miles south of Di::on, farm -

general aviation

PJoodland, p h l i c ,

c. Nut Tree, 2 miles eas t of Vacaville, public,

d. Sacramento Xet ro~ol i tnn , 15 miles east of General Tranaport I

P a ~ e 10

I

- ,- zV- TOPOGRAPEN OF AREA

- - m e f i e l d is i n the--center of the Sacramento val ley, a gently - - sloi3ing p la in with drainage t o the southwest. he- average eievation

of the area is 95 f e e t above mean sea level. Forty miles t o the northeast, the elevation is about 1,300 f e e t while 30 miles fu r the r it is about 3,400 fee t . A t a distance of 55 miles t o the w e s t , Nount Helena rises t o an elevation of 4,340 f e e t , while 85 miles t o the eas t , peaks of the S ier ra Nevada rise t o 10,400. - Atmospheric Conditions :

The Yolo County Airport is located i n the deciduous climate type of the i n t e r i o r area climate, ye t is strongly influenced by t h e maritime area climate. Rainfall average is about 1 7 inches mr year, which qenersl ly f a l l s i n a period 'stween Xovember and. Larch. Snow seldom occurs. During the winter months, there a re occassional periods when a layer of fog w i l l form fo r two o r three days t o ss long as two o r three weeks. There i s a growing season of 262 days, during which time temperatures a r e above 32'. llaximum temperatures reach 114', lows have been down t o 14'.

Climate Features:

Prevailing winds - southwesterly a

TJinds - averaqe speed - 10 i4PX (speeds of 50 iJPH occur about once i n 10 years) Clout2 Cover - 196 c l e a r 'says per year: 55 p a r t l y cloudy days per year: 104 cloudy Says per year Fog - 36 heavy fog days per year

Wind Conditions: (Source - me Climate of Yolo Countv, "Vind Patterns of the Sacramento Valley", prepared by H.B. Schultz, W.E. Yates, G.E. Xil le r , and 14.D. Fitzwalter i n 1971. )

"The winds i n Yolo County a re grea t ly influenced by the north coas ta l mountain range on the west and the proximity t o the Pacif ic Ocean. TJesterly winds whic'h prevai l nos t of the year a r e modified i n t o southerly directions by the nechanical b a r r i e r of these mountain ranges. Even northwesterly winds off the coast a r e of ten turned i n t o southerly winds in.'Yolo County. This ?henonenon of prevai l ing souther. l y winds, of ten ca l led sea breezes, ex i s t s i n many pa r t s of the Sacramento Valley. For exmple, t h e 5-year average of wind direct ions for Davis shows a majority of southerly winds f o r most of t h e year. The only other winds occurring t o a great extent are nor ther l ies which are even more frequent i n Gcto3er, Xovember, and December. On the other hand, i n mi~summer, t i e north direct ions a re by f a r dominant, . T h i s is especial ly s t r i k i n g during the night , when the northerly direct ions p rac t i ca l ly disappear, In the daytine there is s t i l l a considerable number of northerly vinds. The build-up of these during the day can be noticed i n a l l other months also. This s u ~ g e s t e d the existence 02 a diurnal wind pa t te rn which was invest i - gated f o r various locations i n the Valley through the s u l ~ ~ ~ o r t of the U . S . Public Xealth Service, Grant No. A P 292. Data was taken a t TJinters, Dunnigan, Davis, Sacramento, Executive Airport, and G r i m e s . The study shows t h a t i n the Sacramento Valley the southerly winds strongly dominate during t h e summer month3, and usually continue

Page 11

~ 1 1 tae vilmle night . In Yolo County, however, a larcje por t ion . '20 J ,f then cease during t h e morn in^ hours when a considerable number

,;,f: ..o?therly winds occur. :

,/' me percentage of t he nor the r ly winds is not high a t t h e Sacramento ~ : e c u t i v e Ai rpor t near t h e ea s t e rn border of Yolo county, bu t it

, increases r ap id ly between- t h i s po in t and t h e western p a r t of Yolo county. A t Davis, t h e teinporary change t o nor the r ly d i r e c t i o n s

A occurs on more than ha l f oE t h e days a t about 9:00 A21 PST. It is - 7 st i l l more pronounced a t the s t a t i o n s w e s t of Davis, s o t h a t t h e

switch t o sou ther ly winds i n t h e afternoon becomes more s t r i k i n g . S i n i l a r developments a l s o a r e observed i n sp r ing and fsll, un less s y p r e s s e d by major storm a c t i v i t y o r d i f f e r e n t barometric p a t t e r n s frorn those p r eva i l i ng i n summer.

The e:::3lanan-cion f o r t h e "reversed" flow i n t h e morning hours i n Yolo County was found by streamline ana lys i s using a l l Sacramento Valley s t a t i o n s t h a t were ava i l ab le , and those e spec i a l l y i n s t a l l e d f o r t h i s study. In t he f i r s t o f t h e four e:rarn~Aes - m i d n i g h t t o 1 ALl, of Ju ly 29 , 1966, a l l va l l ey s t a t i o n s , vZlich can 3e recognized by wind arrows, show t h e inClux oC t h e oceanic a i r , This a i r movement f r o m south to nor th C Q R ~ ~ ~ U ~ ~ throuy;ll n igh t , with t he v e l o c i t y a t these ground s t a t i o n s gradual ly decreasing from t h e d e l t a a rea toward t h e S u t t e r But tes , a s can be seen by t h e isotachs-l ines of equal v e l o c i t i e s , t r l~ich usua l ly c ro s s t h e s treamlines. By davm the 2ene t ra t ion of t h e marine a i r flow appears weaker a s t he s treamlines show sou ther ly 6irectFons only 'bn t h e e a s t s i d e of t h e val ley . J u s t south of t he S u t t e r Buttes t h i s eas t -s ide a i r c rosses t h e va l l ey toward t h e w e s t s i d e where it continues down the va l l ey a s a no r the r ly wind, This eddy-like a i r movenent i s best develo_ned between 9:00 anc? 10:OO A.H. The i so t achs f o r t h i s t i n e a l s o show t h a t it i s very l i g h t , which mekes spraying opera t ions with a g r i c u l t u r a l chemicals poss ib le a l l morning, u n t i l a new surge of t h e marine a i r t akes p l s ce (1:OO t o 2:00 PX). . However, a spraying p lan according t o t h e d i r e c t i o n regime appears necessary. "

A, 1969 - 1975 Yolo County Airpor t Ekpenditures

Resurface Airport Runway $33,422.96 Patch South Driveway 150.00 Penetrate & Sea l T rans i t Parking Area 1,500.00 Sweep North Half of Runway 80.00 Center Line S t r i p e & N u m b e r Runway Ends 400.00 Penetrate & Sea l Runway & Taxiway 8,820.39 Patch Taxiway 95-00 Make and I n s t a l l Sign 35.00 Paint White Line Down Edges of Runway 150.00

TOTAL

Average Yearly Expenditure 8,930-67 Miscellaneous Expenses 50.00 Tota l Average Yearly Expensitures $ 8,980.67

1

Page 12

/ yolo County Service Area DEFIXITION O F SEXVICE & I A POL', YOLO COmFL AIXPORT

The po ten t i a l service area of an aiq3or.t is normally re fer red t o i n t e n s of a ce r t a in narinum t rave l time between the a i r ~ o r t and trip origins. 'It.10 C i p r e s a r e used, 30 minvtes nnd 40 minutes, * The experience i n California has shown 30 minutes t o be a nore r e a l i s t i c service area l i m i t f o r general aviat ion a i rpor t s . (See ma^ c'

PJithin the defined service area, many fac tors influence the actua?, aviat ion denand f o r a pa r t i cu la r a i r p o e , s u c h as: population, average income of the population, tLle *,4yriber of other a i rpor t s drawing on the sane service area, the r e l a t i v e competitiveness of each of the a i rpor t s , and the capacity of the a i rpor t ,

Yol@ County A i q a r t has been estiinated t o have a capacity of lS5,OOO annual o--rations , with cer ta in improve?.ents such a s l icjhtins, apsroach slo;e indicators , and addit ional runway e x i t s - The t y p c a l exqerience i n California has been t h a t an averaue of 100,000-150,000 a i i u a l operations i s necessary t o have user revenues cover operating costs.

P

Projected increased demand indicate8 Yolo County Airport coulZ a t t r a c t 100 based a i r c r a f t by 2,000A.D., accompanied by no expansion of University Airport or-' iJoodland-Watts. T h i s i n s i ca tes nearly 80,000 annual o-=rations which i s nearing the break even point f o r revenues and expenses. The projection of t h i s demand a l s o assmes t h a t other a i q ~ o r t s (i. e. , l?atonas, Kio Linda, Franklin, and Lincoln) w i l l a t t r a c t muck of the Sacramento Pletro,mlitan Area deinanc?.

As we mentioned e a r l i e r , a major' factor influencing the dernsind f o r a pa r t i cu la r a i r p r t is the competitiveness of tiiat a i r s o r t f o r the p a r t i c u l a r nar'!;e t segment lying within the defined geographic service area. Three types of a i r c raz t demand (13ersona1, ins t ruc t iona l . and a e r i a l a2plication) a re expected t o c rea te the majority of a i r c r a f t demand Eor Yolo County ~ x p r t . Personal and a e r i a l asp l ica t ion a i r c r a f t demand a r e shown t o be very sens i t ive (f ixed cos t e l a s t i c i t y o2 3.578) t o parkinq costs . Effective use of t h i s var iable could allow yolo County Airport t o increase i t s based a i r c r a f t by cornpetlng with the previously mentioned a i rpor t s f o r the overa l l increase i n general aviation demancl within Yolo County A i v o r t ' s geogra?hically defined service area.

There a r e about I4 a i rpor t s ranginq from a large secondary national a i r s o r t t o simple a i r s t r i p a s l i s t e d i n the inventory. Borges-Clarice- burg, University, Vatts-?Joodland, Sacramento-iaietro, Xut Tree, Vaca-Dixon and l h i n e Pra i r ie have the most influence on the Yolo County kir2ort -Service Area. Borges-Clar?isSurq Airport, a pr iva te ly otmed an6 o2erated f a c i l i t y , i s located i n the southern most so r t ion of Yolo County. It is not contern@-ated t h a t t h i s f a c i l i t y w i l l grow a t art-accelerated ra te . T t i s well located t o serve as ~ s s i b l e - r e l i e f f o r Sacramento Executive Airport.

J (1974 S U P C ~ e p o r t )

Page 14

Table #1

Department of Finance

Population Projections for the County of Yolo

Baseline Alternate Projections

Series D-100 Series E-0 Series D-150 Series C-150

104,900 104,500 104,900 105,100 - 118,800 114,500 119,800 120,600 133,000 121,600 136,600 138,400 147,300 128,000 153,000 156,000

161,100 133,700 170,100 174,600

174, 500 138,500 186,200 192,400

187,600 142,500 202,000 210,700 .

The population projection used for the forecasting purposes for the Master Plan is the baseline figure, Series D-100, because it is the medium figure of the Department of Finance's four baseline projections. According to the 1975 Special Census, the population of Yolo County is 100,783 which differs from the projection by 4,000 people. The population of Yolo County in 1975 increased by 14,494 persons from the 1969 census figure of 86,289 people. The discrepancy between the 1975'census figures and the projection was most likely caused by the continued decrease in the average family size in Yolo County between 1969 and 1975.

The forecasting method utilized in the Master Plan is similar to the method used in the Nut Tree Airport Master Plan and the Delano Municipal Airport Master Plan,

Aviation Aircraft Projections

A. Projection. of Based Aircraft at Yolo County Airport

County Residents in. 1976 owned 134 airplanes. That figure represents an increase of only eleven planes in seven years. The nunher of aircraft listed in the Assessor's records (primary source of data) fluctuates a lot because people sometimes base their aircraft in other counties during a single year.

Table #2

Based Aircraft Owned by County Residents

In Yolo County (yolo County Assessor's Office ~ecords)

Year - 1969 1970 1971 1972 1973 1974 1975 1976

No. of Planes

123 120 117 125 157 136 142 J

134 Page 19

o County iksessor I s I?ecorc!s, indicat ing ti,e n~xIL,er c>2 t h s e d i n Yolo Couiity, owned by County resiCents and i d e n t s , v ~ i l l be used f o r t3e zviation forecast projections

f o r t1:e i4aster Plzn. According t o the 1975 Assessor's AircraEt L i s t , tkere were 1.52 >lanes based i n Yolo County. That showed only 3 addi t ional >lanes i n the County s ince the 1972 Aircraf t L i s t and bo'iil f igures e::cluc?c crop cluster l~ lanes .

One net306 t o derive a rat io f o r ?rejecting the number of based a i r c r a f t i n the County i s t o use tile nunber oC based ~Dlsnes i n the Couaty dFvi.6eG by the t o t a l county population. Elus i n 1975, 152 airj31anes divided by 100,733 persons, derives a r a t i o 02 .CG151 ~ ~ l a n e s s~er _ncroon. Using ,00151 planes -per person t i x e s the D e p r t i e a t 02 Finance Toi~ulation pro) ect ions , the nur&er of based a i r c r a f t ~rhi.ch can 3e expected i n Yolo County is grojected.

Table G3

2rojection of General Aviation A i r c r a E t

Yo10 County 19G0-2005

'L%e s ingle engine @ane &minates ceileral and cor,mercial aviat ion in YoLo Co~mty. The majority or" the planes located i n khe cocnty 3ave a raaxinui.~ ti='l;e--of2 weig11t 02 less than 3, GO0 lbs, and 'lave 2 four s e a t ca2acity,

i-ccorcZng t o Liilton Vatto, i n I-kLrc;i oC 1975 there :.rere only a few lanes i n Yolo C0u.ilt.y 02 10,000 ;?ounds o r nore. 171ree such >lanes k r e locate6 a t Yolo County A i n o r t , had a gross weight 05 i0,0001bs., 2 C , OC3 113s. and X , 000 l ! ~ , ( a C(l.5 G GeecixrzZt, a TE.1 and a DC-3, i n t h t oxcer).

In Zuly 1976, a t the Yolo Comty R i r p r t , the ne jo r i ty of the p!,;.nes l i s t e d by the County Assessor a r e four ;>lace, sincile engine planes. Only t w o ' o f t h e seventeen planes are 1-3 place s ingle engine planes and one 1s a twin englne a n c r a f t ,

The ~ x o j e c t e d changes i n the type of a i r c r a f t an t ic ipa te t h a t the proportion oC s ingle engine 4T place and multi engine a i r c r a f t w i l l increase, while the number of 1-3 place s inqle engine a i r c r a f t w i l l decrease, Presently i n Yolo County, there a r e apixoximately 50 s ingle ensine 1-3 ?lace a i r c r a f t nmking about 30% of the total based a i r c r a e t i n Yolo County.

- . 1 . Pa,, - -20 - - -

There are two al ternat ive methods i n forecasting the number of based a i r c r a f t a t the Yolo County Xir?ort, Alternative I assumes tha t the pro2ortion of the number of planes based a t the Yolo County'Airport t o the t o t a l number of planes located i n the County w i l l remain stable. This r a t i o of 29/152 or 0,190 (yolo County a

A i q ~ o r t based a i r c r a f t per t o t a l number of planes i n Y o l o county) times the projected n u d e r of a i r c r a f t f o r the t o t a l county predicts the nmber of based a i r c r a f t anticipated a t Yolo County Airport.

Table

Alternative I - Projection of Based Aircraft a t Yolo County a-rt -

Year 1975 1920 1925 1990 1395 2000

Based Aircrsft

29 34 32 42 45 50 a

The h i s to r ica l record a t the Yolo County Aiwr-L iioes not proviZe an accurate !xtse fo r projecting the ~ t e n t i a l n&r of a i r c r a f t because the airport kas only h e n develo,peC! since 1974, There are currently 23 planes based a t the a i r p r t , b ~ t there arz f a c i l i t i e s f o r thirty-one planes. The rvlarcl-r 1976 f icjures and plane typs w i l l be used f o r forecasting purposes,

A w t i L e BT- . 1

The assuin~ptions Cor al ternate <$2 are the following:

1 ) Watts-i.JoodlanZ and University A i q o r t w i l l not eqan6.

2 ) Sacra~ento Metro A i q ~ o r t w i l l continue t o 5e a A i r Carrier A i q o r t and w i l l not reach i t s Zullest capacity by 2005.

3 ) A l l new planes locating i n Yolo County w i l l most l ike ly base a t the Yolo County Rin-3ort.

Projections 50s Based Aircraft a t Yolo County S-ir-port .

Year - - l9G0

19C5 1990 195'5 2000 2005;

Page 2 1

he following figures could also be predicted depending on the fore- asting method and the variables used:

1. A 1974 SRAPC report predicted tha t there would be 100 based a i rc ra f t located a t the Yolo County Airport by the year 2000 (Please see page 14 of the t e x t ) .

2. A more recent SRAPC report completed i n 1976 estimated tha t 39 planes would be based a t the airport i n 1995 (Please see

- page 70).

3. I f m e t h o k t e r n a t i v e i s u t i l i zed with different Depart- ment of Finance for 2000 A.D., the following estima- t ion could also be-predicted:

a. Using Series E-0, which is the lowest population projection, approximately 39 planes would be based a t the airport .

b. Using Series D-150, 53 based a i r c r a f t would be located a t the County f a c i l i t i e s ,

c. Series C-150, which i s the highest baseline figure, 55 based a i rc ra f t would be located a t the airport , a

4. Using forecasting m e t h o d t e r n a t i v e s but varying the Finance figuring, the folfuwi e r of planes would be predicted for the year 2000:

a. Series E-0 - 86 based a i r c r a f t

b. Series 0-150 - 158 based a i rc ra f t

C. Series C-150 - 168 based a i r c r a f t

Page 22

It hss been ant ic ipa tes t h a t t L e fu ture grotkh of a i r operations a t t h e Yolo County A i q o r t w i l l be r e l a t ed t o the number of a i r c ra2 t based a t tl;e f i e l d f o r Local ac t iv i ty .

In 1973, z.ppo;rha.tely 60 operations _ger week say w e r e the recorzed Gigure hy the County a t t2e Aiq3ort o r apyo::imately 21,3GO operations :for the year.

In accorSance with FlA Advisory Circular 150/5070-5 the value oC GSO o:~erations >er based a i r c rag t is given as a high t p i c a l nom f o r General Avistion Airports i n 1966. This value of 590 [email protected] by tile appropriate increase fac tor of 1.08 f o r ad jus t i rq base n o n s t o 1975, yie lds an adjusted 745 o ~ e r a t i o n s per based z i r c r a f t per year, According t o the S t a t e DrvFsion oC Aeronautics, the value of 750 o ~ e r a t i o n s ser based a i r c r a f t is a reasona3le estimate f o r the amount of a c t i v i t y which occurs a t the Yo10 County r t . iCultiplying 750 oi~erat ions tirnes the 29 based a i r c r a f t a t tke Yolo County Airport, it should be a n t i c i y t e d t h a t 21,750 operstbons w i l l occur i n 1976.

Operation Projections f o r Yolo County Airport

Using Series D-100 Baseline Population Figures . '

1920 5G glanes X 750 = 42,000 annual oLperations 1985 77 ~3lanes X 750 = 57,750 muzl oLperations 199C 97 planes 1: 750 = 72,750 annual operations 1995 1 2 0 planes 2: 750 = 90,000 annual ogerations 2 C X 160 ?lanes 2.: 750 = 105,000 annual o:xrations 2005 150 lz~lanes % 750 = 120,000 annual operations

This t zb le sllows that 25 o r 30 years fron now the Yolo County A i q o r t read: the s tage of a Basic U t i l i t y Stage I1 A i r p o r t

(Ceeder systemthigh densi ty) with between 1GC,000 and 200,000 average annual o ~ ~ e r a t i o n s (See def in i t ions ) .

ZaciLity r e ~ ~ u i r e n e n t s a r e developed Prom infonnstion obtained from the inventory-ca~3acity infonnation, t h e demnd analysis and f ron FAA BSvisory Circulars an6 Regulations which ?roviSees c r i t e r i a Tor Sesign of a i rpor t commponents. These recqnrernents a r e then incor:>orated i n t o the a i r imr t plans prepared as p a r t of the I.hster Plan Study. Tile fac i l i ty requftments $or the Yo10 County A i q . r - k , and >roAmaed exp?nsions are l i s t e d on the following page.

Page 2 3

Soi l types a re described a s fo!,lo~~s: 1-Iillciate lorn (B&\) - The surface runofz of t h i s FIillgate s o i l is v2ry slow and the erosion hazard is none t o s l igh t . capabi l i ty un i t 211s-3 (17). The available ?later holdins capacity i s 4.0 t o 6.0 inches. The ef fec t ive root d e $ A ~ is 20 t o 30 inches. This s o i l has severe s o i l 1Frnitctions f o r sep t i c tank f i l t e r Eield.

bIyers Clay (ids) - T h i s i.Iyers s o i l is slowly permable. Surface runoff i s verv slow, an2 there is l i t t l e o r no hazard oE erosion. The a v a i l a 3 i l i t y v ~ t e r holding ca~3acity is 8.0 t o 10.0 inches. The ecr'ective r m t i n g de2t'n i s more than 60 inches. Matural f e r t i l i t y is f i i ~ h , c a ~ ~ a b i l i t y u n i t 11s - 5 (17). This s o i l has severe s o i l l i n i t a t i o n s f o r se;.tic tad: f i l t e r Cield.

Waste Water Treahen t - The erristinq se~~ki.c tc.rk and leach l i n e systeii serves the $resent p b l i c restroorn f a c i l i t i e s and the F.3.0. off ice . m11 6evelopnent a'-. t he f a c i l i t y w i l l dezancl a treatment plant.

O n an6 ofC-site coslCftions - I-lill5ate loam and biyers loan s o i l s have a very s lov~ ~ ~ e r a e a b i l i t y vhich means surface ruaofg wter 2ercolates throush the s o i l very slovrly. Alt'nouqh t!le AF-ort has a h is tory 02 clrainace problems, i f t he runway is pro~eir ly constructecl vhen it is eqanded, no water shov.16 stand on the a i ~ o r t runway surgace. Wlheil fu ture develognznt occurs at tke

. a i r ~ o r t , hawever, due t o the increased surface runoE2, a \ coriplete Srainaqe system should be ins ta l led . The area Zrains

i n t o Chicf:ahonlr,y S l o ~ g l ~ t~liicl? has a h i s t o r i c dloodinq prokdem. Additional surface runozf occassioned by the devolopent oT the air-2ort would be e x ~ e c t e d . Temi30rary sondin9 :or flooZ waters could be provided oa the site.

Toxic chexicals 2nd 2es t ic ides should be stored i n a EenceZ s rea t o prevent u:lautllorized ;.ersonnel fron c o ~ i i l g in to contact v ~ i t h thex. kAn area c lose t o the ta::iw.~ay and access road, yet array Cron tke t emi i l a l , w i l l be designate6 :or the storage of c5enicals used b r the cro-:, Zusters. I n the cro13 duster business

\:water i s a l so use(', KlereZore, a s q e r a t e waste l i qu id Gisposal tank s y s t e ~ shcul6 be constructed so a s t o reduce the 2oss i5 i l i ty 02 c o a t a ~ i n a t i o n ,

Page 28 .

~unicipal Utilities - are compatible as far as noise is concerned, but the following may present obstructions or hazards:

? 1. Gas and Oil Facilities, including above ground pipelines and storage facilities - marginal under approach zone surfaces.

2. Electrical Plants - marginal under approach zone surfaces. 3. Power Lines - poor under approach zone surfaces. C

In addition, trash dumps and incinerators may create a smoke problem, and garbage dumps may attract birds.

Commercial Uses - Restaurants, shopping centers, office buildings, public buildings, banks, gasoline stations, hotels, motels, and theaters are good uses on an airport or adjacent to it but should incorporate sound reduction in buildings for internal livability. None of these should be constructed in high hazard airport safety areas.

Industrial Uses - are acceptable except for'those that produce smoke, electronic interference, or misleading lights. Sound conditioning of structures may be required to reduce exterior noise to acceptable levels for internal operations. Some .industries cannot be located near airports because noise and vibrations interfere with delicate instruments.

Residential and ~ e r t a i ~ Institutional Uses - are considered poor adjacent to airport areas, and particularly under the approach zones because of both noise and hazard. ~coustical treatment will reduce noise in the buildings, but it will not reduce noise during outdoor

- activity.

The Yolo County Land Use-Plan continues to state:

1. Agricultural, recreational, and open space designations are the most compatible land uses around the Airport.

2. Industrial and Commercial designations around the current airport boundary will be discouraged.

3. All residential development will be discouraged around the airport.

4. Recreational uses, i.e., parachuting, model airplanes, will be allowed to continue at the airport until they become incompatible with aviation uses.

The current Special Height Zone is adequate for future development at the airport.

Page 30

Environmental Review

The pro jec t ident i f ica t ion , objectives, an6 location has been nreviously discussed i n the i4aster Plan and the project d e s c r i ~ ~ t i o i l , /- geologic 2nd gedologiic conditions, hydrolic , atmnos~heric , a d t r a f f i c conditions can be found i n the Physical Requirenents Section, which s t z r t s on ?age 22. The only vegetation and w i l d l i f e which e x i s t s on the a i rpor t pro?erty a r e those comnon t o ur3an and agr i cu l tu ra l habi ta t s ; a list of wi ld l i f e and veqetation can be - found i n the Yolo County General Plan Conservation Element.

Socio-Cultural and Socio-Economic Factors:

Cul tc ra l Resources: There a re no archeological, a rch i t ec tu ra l o r engineering fea tcres of m y significance locate6 a t the Yolo County Airport o ther thzn t he ain2ort itself. The only h i s t o r i c a l signicicance the a i rpor t may have is its minor role during Vorld T?ar I1 as a auxiliary landing s t r i p for McClellan A i r Force Base. L i l l a r d iiall has s o c i a l significance to the West P la inf ie ld peo9le because the h a l l serves as a meeting place f o r them. The v?est Pla inf ie ld F i re Stat ion is the focus f o r the mostly volunteer f i r e depw3ment.

Public Fac i l i t i e s :

a. Yolo County Sheriff Department . I'Jest Pla inf ie ld F i re .Department

c, mF1itie.s: 2ac. i f . i~ Telepl?one Company and P.G,&E.

d, Davis Kaste Reqoval

e. Yolo County Public Works Department f o r Road Maintenance

Aesthetics: The on.ly area of i n t e r e s t located i n the v i c i n i t y i s the grove of Eucalmtus t r e e s located near the southern bounchry of the a i q o r t . The o,ld control -tower is a l so in te res t ing t o loo:: a t rC LOO, as a reanant f:ron XorlZ T?ar 11.

Zuisance: %:e a i r p r t l i ~ s the s o t e n t i s 1 t o inzuce nuisance con&tions, esgecial ly noise. Other nuisance conditions such as vibrat ions , dus t , odor and 21x2 e x i s t e i t h e r f ron the e i r c r a f t themselves, such 2s vibrat ions o r odor from the crop d ~ s t e r s and t h e i r pes t ic ides , or qLare 2rox the as+al-L and concrete pavements o r fro13 the n e t a l buildings. l?oFse conditions w i l l be discussed under the i r ~ ~ 3 a c t Econonic, See Economic Re5ort section,

Population snd Land U s e :

Accordinc,. t o the 1975 S p c i a l Census, 477 3eonle res ide i n the area surroundin5 the .airiiort 3ounSed by County Roads 27, 93, 32 and W., That is an increase 02 74 people from t h e 1959 Census figures: Since 1352, 32 new dv~el l i fqs were b u i l t i n the v ic in i ty , 19 residences -were b u i l t i n the Census Tract Area which is located adjacent t o the a i q o r t r o ~ 3 e r t y :to the e a s t , and seven hones were b u i l t immeGiately southeast 02 the a i r so r t . Table JjG; cle@cts the- 1963 and 1575 Census r ' i g x e n Lor t h e area surroundinq the -Yolo county i l ir~3ort .

Population and Z o u s i n ~ Ficjures

Housing Units

Vacant Units

Percent

Xous eholds Eousel~old Pop, Po?, % I<ouseho2d

Groui3 Warters Total Population

1975 S ~ e c i a l Census Ficiures

TOTAL

TOTAL

Page 32 -

Geolodc and PeSoloaic Impacts:

There w i l l be sone adverse i q a c t s associated vrith the pro2osed developiients when the a i r p o r t i s ugraSed and meets the U t i l i t y o r Transcort Airsort Classif ication. Land Wiilch has a k i ~ h na tura l ,c ~ e r t i L i t y and i s current ly used f o r dry farming w i l l be convertec! *

t o air :~ort indus t r i a l use. In order t o meet the future demnGs, Class 3 and 4- s o i l s v r i L l be covered by pavement Zor a pemanent access roa6, by 3uildings t o house z i r c r a c t o r m i a t i o n uses, and by waste \rater Eac l l l t i e s o r d r a i n a ~ e ponds. Construction work w i l l c rea te dust , which could be mitigated by s~r i r i lc l ing Gown the s o i l .

IUtl:ou$l there i s adequate space within the a i w o r t pro l~er ty to m e t the Clear Zone Area s ~ ~ e c i f i c s t i o n s f o r a U-Lility Aiq3ort Category, an addi t ional 27.0 acres i s needed t o meet t11e T r a n s p r t Clear Zone Area requirements i f the runway r e i i i n s 5,000 f e e t long. Fa d e v e l o p men-k r i g h t easeqsnt may 3e su f f i c i en t t o the north of the since the land could continue t o be famed a f t e r tl?e a i ~ o r t reac7;les i ts ultinaize size. Tile land s o u t l ~ of tlie rumray, hov~ever, t4e 13.7 acres nust 3e 2urchased s ince several accessory buildings a d porsilbLy a single-family Gwelling a r e loca-ted within the pro-msed c lea r zone. a

E l e ca ixc i ty of t he exis t ing w e l l can a e e t tke nceds of t h e Yolo County Airport Zor many years 6ependinq on t5e ty?e of uses which locates there. Before the a i q o r t reaches I t ' s ultimate s i z e , .

however, a nev we11 w i l l be needed. Pur~Fng Eroin e2cl-r well i n the area c o n t r i k t e s to tke draw down pro31ein i n the v i c i n i t y vjllich lowers the under~rourd water surf ace.

The a i r s o r t _nro?erty i s located within the PlainCieiZ Ridge ground water basin and i n tiia 7il low Slouql surface ~ r z t e r hydrolosic basin. kccordinq t o the X2y1 1975 ClenCeaen re12ort t i t l e ~ , " Y o l o Coanty-Inves'iisation " the Plainfiel-d Ri6cje is zn i so la ted body of

. n. dissected a l l u v i a l d e ~ o s i t s . lile area contains hard s i l t and clay, sandstone and cement& gravel oC thc Tekziiria Zomation vd~ich tends t o ix2ede the movement of c;round water between the 3p3r ant: Lower Cache-Putah Basins." According t o E l l l 3erg, an encineer f o r LuhdorEC Conpny, .tilcl: vrzter qua l i ty i s s imi lar t o i700dland1s water. Be s l s o sa id t h a t the ui->?er doacstic wells a r e i n marginal condition because of the &ought and area forraation, There are nany poc?;ets of water located i n the a i rsor t v i c i n i t y , but a 50C Coot dee? well ~ ~ o u l d no-t be an uncommon occurence due t o the PlainEield R i c l g e f onnation.

The future usage of water a t t he aimor-: w i l l ke l3 deplete the under- qrounc? iratcr sup$y, and according t o the ~ l c n ~ e n k report , each year tlle county- i s overclraring the grounc? water supi$y. In a 30 year Feriod. 1944-1974, the decrease i n groundwater storage has

- 1

Page 33

anounted t o a;?~xo::inately 500,OOG acre fee t . / /

The airi.ort pr-erty is locatec? i n l?illovl Slouch Basin. The / g r i n c i ~ a l drainacje course is VJillov Slow$, rll~ich flows

easturar8ly IIett-~~eil Yoodlancl and Davis, receives winter runoffs and sumner i r r i g a t i o n drainacje from tke e n t i r e cen t ra l ~3ortion of the County an6 s p i l l s i n t o the Yolo Bypass. The sources of water i n t h i s a rea . a re runof5 Zrc)1;1 t he f o o t h i l l s and south cent ra l portion of 'she County and diversions f r o m Cache Creel-,' a t Capay. *

i?illow Slough is "eel by several canals, i r r i q e t i o n c?itcheo, an2 small streams and flow is often s;3orac?ic. iieasurene3ts of flow are ilot nade, ant! LiniteG water w a l i t y monitoring has recently beea s t a r t d but it is known t h a t t h i s area floods gerio6ically.

The ?romse2 e;gmsions w i l l irqack the hjrdrolopz? of the area by creaking addi t ional irapervious sureaces which vri.3-L reduce ?enetration 02 ~11rCace rrzter t o the underground basin and t r i l l increase stoxx 'cmter m o f f from the site. The increased okom water mnozf emu7b ilot ser iously increase t h e ClooCLinc,: ~ ~ r o b l e x which

Pollution oQ surfzce water Cram casual crop dustin9 loafin9 operations e x i s t s a t .the site.

J

. .

Jmes :<oslow, A i r Pollution Control Ofricer f o r Solaiio-Yolo y re pared these coments v~hicli w i l l be attached late;-,

i3o s ip i f icmt aZverse i n p c t s a re associated with fu ture expans io~s a t the s i r -mr t i n as much as the ?.an$ is alreacly intensively used a32 h s 3een levele8. Grasses o r a n h a l s that a r e displaced 3y the construction a c t i v i t i e s can s e t t l e e i t h e r on neiflloring g r o p r t i e s o r i n the s2ace whicil w i l l remain vacant or LandocapeB.

Socio-Cultural and Socio-Zcoxomic Ixxcts:

Culturcl Imi3acts :

The ~ x o ~ ~ o s e C e:q?anoion v r i l l have no adverse i ~ q e c t s on t1.e cu l tu ra l resources because there a re no ::nown archeological, h i s t o r i c a l o r a rch i tec tura l features of sir;nificance e x i s t i n 9 at the a i r o r t . The poi~osecl expnsior . w i l l be a benePit f o r the peg-3le 02 Yolo County . . ci~rec;ly by c : ~ ~ n S i n c ; n loca l t r a n s w r t a t i o n mock, and ind i rec t ly 3y increas i iq the safety 02 the a i rpor t f o r the a i rpor t users.

Enerav U s e and Conservation :

:?it11 the increase 02 o p r a t i o n s a t the -a i rpore wken ';he Yolo County f?ir-?oi-t reaciles the U t i l i t y or Trans2ort catecpry, r-lore gasoline and rue1 w i l l be cons-uned then previously used a t the a i q o r t .

I

According t o the Sacranento Ilegional Aren Plannin~ onh hiss ion report,

Page 34

&&oyee an3 user ppu la t i on w i l l . increase, but resident ial 903ulatioa ni$t decrease t o rriinimize a 7otextFal noise nuisance .. conf l ic t , The increased ac t iv i ty w i l l have a adverse i m p c t on the ~3eo:~le vd~o currently reside near the a i q o r t , especially these - people t~ho l i v e on County *all 2 5 , 29 and 30 and on Yoserilite and Carlsbad Streets.

Traff ic :

The nuzber of t r l y generated a t tke Yolo 2iir-2ort has been a;3coxFii1ate?. f o r the future pro~oseG expansions by urinc;. the State 02 CaliZornis' s T r i ~ Ends Generation Eesearck Counts study. If Yolo County A i q p r t reaches the s ize and category of Sonom County ixr-mrt, the averase treekCny traf-fic can he e ~ e c t e d t o appro:Lz1ate'.l,0@0 t r i 2 s 2er day.

conditions existing a t the i3a2a Airport nay also be a h i l a r t o the conditions vfiicl-r zay ex is t a t Yolo County Aiqmrt i n 1995. Vhen Yolo County A i r ~ r t has 120 a i r c r a f i based a t the aiqor-k, it is i~oss ib le - the averacje flightsper clay v~ould be 634, It could then be expected t h a t tke a i q o r t w i l l have 5 employees and 125 gar?:ing b2acen. An averaqe week&y t r a f f i c count of 600 t r i p s m y be expected.

Land Use:

T3e l~roi3osed e v n s i o n of the Solo County A i v o r t w i l l exert pressure on tile surroundin? agricul tural areas t o convert t o urban uses, such a s tor-x~ercial or ~ n d u s t r i a l uses. AFr:?ort developents ineuce urbanization vE1ic21 is coqitrary t o the Yolo County General Plan ~onserva t ion and Opes Ssace Elements' policy of ? r e se rv in~ agrlculturn-. land. Eventually land h a t i s used f o r agricultural 9roduction ni@~!lt be re6esic;nated for Connercia?. o r Industrial Designations. The a i r ~ ~ o r t e:gsasion w i l l have a sic,mificant adverse iLni-~act on the res ident ia l and agricultural de s i~na t ioas ,

Public Faci l i t ies :

A&erse i n p c t on Yolo County Sheriff Depctnent because nore nen would be needed t o 2rovide aCequate protection a t tI:e airyort .

Fire Der3artmen.t :

Adverse i ~ p a c t s on the Vest PlziinnPield Fire De?artrae-it because nore rnen and ecicipment would be neede6 t o meet the demnfis cjeneratd by a Basic Trans2ort category airport ,

U t i l i t i e s :

P .G.&E. Conpaily , -pacific Telerjhone Con?any, an8 Davis ??Etste Removal can meet the Euture demand. A new well w i l l be necessary an3 a more

waste water systen is needed t o y e v e n t a6ver.e i rp~ac t s

Aesthetic Lm3acts: I

Views of t he Vaca i . I o ~ n ' i a i i ~ ~ itmy '3e blocked Pror.1 t l x resiclential. mits located t o the e a s t of the airport. Some a i q o r t develoy,lents, i. e. restaurants which are two-stories , could emMe people t o enjoy a beant i fu l panoramic view of tile aur roundin~ region. -

This section included with tlre noise contour nags w i l l be added a t a l a t e r date,

APPENDIX C-10

SAFETY PLAN

SITE SPECIFIC SAFETY AND HEALTH PLAN (SSHP) OEWICWM Archives Search Site Inspection Visit

Yo10 County Airport Yolo County, California

Site # J09CA009400

1. REFERENCES:

a. Safety Manual, CELMS-PM-M, 16 Sep 93 w/ Chl.

b. SOP for Reporting Ordnance and Unexploded Ordnance (UXO), CELMS-PM-M, 19 Jan 95.

c. OEW Guidance Regarding Coordination with EOD Organizations, 10 Jan 95.

2. GENERAL: This plan prescribes the safety and health requirements for team activities and operations conducted to determine the presence of ordnance and explosive waste and lor chemical warfare materials at the specified site.

a. The Safety Officer has final authority on a l l matters relating to safety. The safety rules will be followed at all times. Any member of the team may stop operations if they observe a situation or activity which poses a potential hazard to any individual or to the operation. All actions must comply with the common sense rule!

b. All team :members will be aware of the local emergency numbers and the location of the nearest telephone.

c. A minimum of two and a maximum of eight persons will be allowed on-site at any one time.

d. The property owner is not required to sign the SSHP, but should be politely asked to participate in the safety briefing.

3. MISSION: Reconnoiter, document, and photograph areas on Y olo County Airport, formerly Winters-Davis Flight Strip and Yolo County International, Yolo County, CA, suspected to be contaminated with UXO andlor toxic chemical munitions.

4. SAFETY PRECAUTIONS: All team members will stay within sight of each other while on site. A first aid kit will be on hand. The following three basic safety rules apply at all times:

a. Rule 1 - Do not touch or pick up anything at the site.

b. Rule 2 - Do not step anywhere you cannot see where you place your foot.

c. Rule 3 - There will be no eating or smoking at the site. Hands will be washed after the survey and prior to eating. Drinking fluids should be done during periodic breaks.

5. SITE COMMUNICATIONS: The primary means of wmmunicating with other team members will be by voice. Team members will always remain within sight of each other. Cellular telephones should be carried to facilitate and expedite calling for emergency medical services.

6. NATUFUL HAZARDS: Cold, wet weather may be encountered during the month of February. Snakes, biting insects, and poisonous plants wuld be encountered.

7. ORDNANCE HAZARDS: Practice bombs, small arms ammunition, as well as other miscellaneous items might be found in the area.

8. HAZARD EVALUATION: Estimate the overall hazards using the following guidelines: (check appropriate item)

[ ] Low (small arms ammunitions) [XJ Moderate (practice bombs with spotting charge) [ ] High (high explosive munitions, toxic chemicals, WP) [ ] Unknown

9. EMERGENCY PROCEDURES: First aid will be rendered for any injuries. In the event of a detonation, everyone should freeze until the situation can be assessed by the team leader. Unnecessary injuries can be avoided by not panicking and planning a logical course of action, which may include retracing your steps out of an impact area. Emergency medical services will be contacted by the most expeditious means available.

10. SAFETY STATEMENT: Safety is everyone's business. No unnecessary risks will be taken to obtain photos or other data. Team members are responsible for notifjmg the project Manager or safety Officer of any physical conditions that may impede or prevent their

accomplishment of the mission. An example is allergic reactions to bee stings.

Important Phone Numbers

Emergency medical service: 91 1 Law enforcement agency: 911 Huntsville Sdety: (205) 895-1582/1579

(800) 627-3532, PIN 777-2534 Non-emergency number:

SSHP reviewed by: /'

Encls 1. Safety Briefing Attendance 2. Safety gear

SITE SURVEY SAFETY BRIEFING

PPE Site Hazards

x Work Clothing x OEW -- Gloves CSM -- Hardhat H l W

Hearing protection x Slips, falls, trips x Safety shoes Wildlife

-- Safety glasses Vegetation

Weather Precautions

cold ColdIHeat Severe Weather

Safety Briefing Attendance

All team members and any accompanying personnel will be briefed and sign this form:

Print name and organization William K. James CELMS-PM-M

Scott A. Barton CELMS-PM-M

Gerald V. Schwalbe CELMS-PM-M

MANDATORY MINIMUM SAFETY GEAR

First aid kit (individual)

Survival kit

Fire starter

Space blanket

Whistle

Mirror

Cellular phone

Flash light

Survey tape

Canteen

APPENDIX C-11

SrrE VISIT

CELMS-PM-M 6 March 1995

MEMORANDUM FOR RECORD (Mike Dace)

SUBJECT: Trip Report-Site Surveys for Yolo County Airport, Formerly Winters-Davis Flight Strip, DERP-EUDS Project No. J09CA009401, and Mt. Campbell Rifle Range, DERP-FUDS Project No. J09CA087601.

1. The following individuals participated in the site investigations on the above referenced sites.

Mr. Scott A. Barton Mr. William K. James Mr. Gerald V. Schwalbe

2. On Monday 13 February 1995, Messrs. Barton and James flew from St. Louis, MO to Sacramento, CA., arriving at approximately 1245 hours Pacilic Standard time. Mr. Schwalbe, who had been on leave, picked them up at the airport. The team then drove through Woodland and then past the Yolo County Arrport, where they briefly viewed the facility prior to the site visit scheduled for the following day. They also spent a brief period attempting to reach Mr. Duane Chamberlain, who farms the available land on the airport ground, but were unsuccessful. They next proceeded to Davis California, where they registered at the Ramada Inn motel and remained overnight.

3. An appointment had been made for early the following day, Tuesday 14 February, to meet with Mr. Wiswell, Manager, Yolo County Airport, who would escort the survey team about the airport grounds. After introductions of Messrs. Barton and James, the team conducted the site survey. Mr Wiswell first escorted the team to the far south side of the airport where they surveyed the former bombiammo storage area. This location was found to be partially in crops and partially unimproved ground. The crop area was extremely muddy, but the unimproved ground was surveyed and photographs were taken of the site. Although no evidence: was found of OEW scrap in the area, Kirk James did iind hollow- filled tile, the material commonly used in ammo storage structure construction. The survey team then was escorted to the north side of the airport and observed and photographed the property used by the gun club. By 0930 hours the team had covered the areas of interest. Mr. Wiswell then left for another meeting. He provided directions to Mr. Chamberlain, and it was understood that after contacting Mr. Chamberlain, the team might return again for further inspections. Mr. Chamberlain has farmed the property for many years.

4. The team drove to Mr. Chamberlain's home and business office located at 34530 County Road 29, which is about 1 mile west of the N/W corner of airport property. The following are the recollections of our conversation with Duane Chamberlain. He indicated a long time in the past (20+ years) Blue Practice Bomb Rounds were occasionally tilled up by his farming equipment. He described these as being about 5 to 6 inches long, with fins, and about 2-1/2 inches in diameter. He briefly searched around his office for a souvenir, finding none. He stated there is not much evidence remains of the facilities once part of the old

Winter-Davis Air Strip. During farming operations his employees still occasionally turned up concrete chucks, which they were instructed to bury deeper beneath the surface. There was also some debris and junk piled into a number of concrete pits adjacent to taxiways. He speculated that there may be something left in these pits. At the Southeast corner (old bomb storage area) he mentioned there was once an oil road, but they had broken this up and spread it around with nothing much left. He also mentioned that near the Fire Department facility, some chunks of concrete remain piled up and tunnels run beneath the taxiways and runway. Mr. Chamberlain then proceeded to drive us to view the various features he described. At various places, the team examined structures and took additional photographs. The pits held connection points for former water supply lines used in fire control. Entrapped surface water, junk, and other debris were evident in these reinforced concrete pits. However, nothing on an OEW nature was observed by the survey team. The tunnels beneath the pavement structures were found to be old drainage structures and concrete wing walls. He then drove to the area of the old bunkers, where we had previously been escorted by Mr. Wiswell. No evidence of ordnance and explosive waste (OEW) was found in the former ammo storage area or anywhere elsewhere on the FUDS property.

6. Around noon Tuesday, the survey team drove to Fresno California, arriving and registering at our motel at approxihely 1530 hours. Shortly thereafter, the team drove to the Mt. Campbell Rifle Range FUDS, with the intention of contacting Mr. Matthew Pennebaker, Caretaker for the property, phone: (209) 638-6871. (Ownership is D. W. Ketscher Trust, used for grazing land, office phone (209) 638-3001.) However, he was not at home. After taking panoramic view photographs from the road adjacent to the rifle range FUDS covering the mountain side beyond, the team returned to their motel arriving at approximately 1800 hrs. The actual site survey was scheduled for the following day.

7. On Wednesday 15 February 1995, after phoning the caretaker for permission to access the property, the team proceeded to sweep the actual rifle range property (INPR - 210 acres) site and the mountain side beyond (another 400+/- acres). Mr. Schwalbe thoroughly covered the area surrounding the rifle range berm, the berm itself, and an area on the southeast side of Mt. Campbell climbing and searching to approximate elevation 700 feet msl. No evidence of OEW was found on or near the former rifle range berm. This confmed results of previous searches of the rifle range accomplished by Ted Moore's team which found no evidence of OEW.

8. Messrs. James and Barton proceeded up the mountain from the rifle berm towards the North reaching approximately one half way up to the crest (Elev 1000 +I- feet msl); and they then proceeded laterally across the hillside generally to the southwest in search of remnants of the practice rockets previously found by an ASR search team from St. Louis. Confirmation of the type and size of practice munitions was their objective. In criss-crossing the mountainside, Mr. James found OEW remnants of a 3.5 inch practice rocket warhead. Photographs were taken of the evidence that practice rounds were left on the hillside from National Guard training activities. Upon our return to St. Louis it was learned that more, and perhaps better evidence, of the training use of Mt. Campbell can be found closer to the crest of the mountain.

9. Following the site visit at approximately 1230 hours, the team returned to car and drove to Sacramento CA, where they remained overnight. On Thursday 16 February 1995, the survey team departed from Sacramento airport at about 0800 hrs Pacific Standard time, arriving in St. Louis at 1330 hrs Central Standard Time.

10. POCs this office are the undersigned:

QASAS ext. 8844

safety 0&r Project Manager ext. 8762 ext. 8788

APPENDIX C-12

DOCUMENT REFERENCE LLST


ARCHNES SEARCH REPORT FOR

YOLO COUNTY AlRPORT (FORMERLY WINTER-DAVE FLIGHT STRIP)



DOCUMENT C12 - F'ILE DOCUMENT REFERENCES

C12.1 Jones, Fred K., Captain, Assistant Adjutant General 1943 Letter to 4th Army, Presidio of San Francisco, California, dated March 10,

Record Group 18, Series: Central Decimal Files, October 1942 - May 1944, Box 1598 Windsor Locks to Worcester, Folder Winters-Davis Flight Strip 600 Misc., National Archives and Records Administration, Washington D. C.

C12.2 09Brien, John J., Colonel, U. S. Army Corps of Engineers 1943 Letter to Commanding General, U. S. Army Air Forces, Acquistion of Land,

dated May 11, Record Group 18, Series: Central Decimal Files, October 1942 - May 1944, Box 1598 Windsor Locks to Worcester, Folder Winters-Davis Flight Strip 600 Misc., National Archives and Records Administration, Washington D. C.

C12.3 Newman, James B. Jr., Colonel, U. S. A m y Air Corps 1943 Letter to Commanding General, U. S. Army Air Forces, Acquistion of Land,

2nd indorsement, dated March 10, Record Group 18, Series: Central Decimal Files, October 1942 - May 1944, Box 1598 Windsor Locks to Worcester, Folder Winters-Davis Flight Strip 600 Misc., National Archives and Records Administration, Washington D. C.

C12.4 Lyle, John M., U. Colonel, U. S. Army Corps of Engineers 1944 Letter to Chief of Engineers on the Proposed transfer of Winters-Davis Flight

Strip to the Western Flying Training Command, dated April 29, Record Group 18, Series: Central Decimal Files, October 1942 - May 1944, Box 1598 Windsor Locks to Worcester, Folder Winters-Davis Flight Strip 600 Misc., National Archives and Records Administration, Washington D. C.

C12.5 Summers, I. B., Colonel, Adjutant General 1943 Letter to 4th Army, Presidio of San Francisco, California, dated March 1, 2nd

indorsement, Record Group 18, Series: Central Decimal Files, October 1942 - May 1944, Box 1598 Windsor Locks to Worcester, Folder Winters-Davis Flight Strip 600 Misc., National Archives and Records Administration, Washington D. C.

C12.6 Summers, I. B., Colonel, Adjutant General 1943 Letter to 4th Army, Presidio of San Francisco, California, dated March 1, 2nd

indorsement, Record Group 18, Series: Central Decimal Files, October 1942 - May 1944, Box 1598 Windsor Locks to Worcester, Folder Winters-Davis Flight Strip 600 Misc., National Archives and Records Administration, Washington D. C.

C12.7 Naismith, W., Chairman, Yolo County, CA, Board of Supercrisors 1948 Letter from War Assets Administration on Winters-Davis Flight Strip

Disposal, dated January 20, Record Group 270, Series: Real Property Files, Box 147, Folder W-Calif-183, WD-779 (3) Disposal Data, Winters-Davis Flight Strip, National Archives and Records Administration, Pacific Sierra Region, San Bruno, CA.

C12.8 Sears, Julian D., Acting Director, U. S. Geological Survey 1947 Letter to Mr. W. D. Rowe, Director Control Division, War Assets

Administration on Winters-Davis Flight Strip, dated August 11, Record Group 270, Series: Real Property Files, Box 147, Folder W-Calif-183, WD-779 (3) Disposal Data, Winters-Davis Flight Strip, National Archives and Records Administration, Pacific Sierra Region, San Bruno, CA.

C12.9 U. S. Army Corps of Engineers, Post Engineer, Winters-Davis Flight Strip 1944 Report on Evaluation of Carrying Capacities of Air Field Pavements, Winters-

Davis Flight Strip, dated April, Record Group 77, Accession # A5 1-59, Box: 472 Windham - Winterport, Folder: 686.61, USAF Historical Research Center, Maxwell AFB, AL.

C12.10 U. S. Army Corps of Engineers, Post Engineer, Winters-Davis Flight Strip 1943 Site Board Report on Winters-Davis Flight Strip, dated 1943?, Record Group

77, Accession # A51-59, Box: 472 Windham - Winterport, Folder: 685, USAF Historical Research Center, Maxwell AFB, AL.

C12.11 L i e , Herbert A., Lt. Colonel, U. S. Army Adjutant General 1945 General Order No. 33, Assumption of Command Jurisdiction of Winters-Davis

Landing Strip, Winters, California, dated May 24, Record Group 77, Accession # A5 1-59, Box: 472 Windham - Winterport, Folder: 323.3, USAF Historical Research Center, Maxwell AFB, AL.

C12.12 Jones, Fred K. Jr., Captain, U. S. Army Assistant Adjutant General 1943 Letter to 4th Army, Presidio of San Francisco, California on Construction of

the Bomb Storage Unit at Winters-Davis Flight Strip, Winters, California, dated March 18, Record Group 77, Accession # A51-59, Box: 472 Windham - Winterport, Folder: 686, USAF Historical Research Center, Maxwell AFB, AL.

C12.13 Federal Aviation Administration 1945 U. S. A. (Conus) Airfield Directory, Fact Sheet on Winters Flight Strip, CA,

Box 260.277 v. 1, page 260, USAF Historical Research Center, Maxwell AFB, AL.

C12.14 Yo10 County Planning Department 1994 Map on Proposed Development Program, Yolo County Airport, Yolo County,

CA, Exhibit A, dated December 27, Yolo County Planning Department General Files, Yolo County Planning Department, Woodland, CA.

C12.15 Yo10 County Planning Department 1994 Map of Airport Vicinity, Yolo County Airport, Yolo County, CA, dated

October, Yolo County Planning Department General Files, Yolo County Planning Department, Woodland, CA.

C12.16 Woodland, CA, League of Women Voters 1980 Study of "Know Your County, Yolo County History and Government", dated

January, Published by the Woodland, CA, League of Women Voters, Woodland, CA.

C12.17 U. S. Army Corps of Engineers, St. Louis District 1994 Site Fact Sheet on Yolo County Airport, U. S. Army Corps of Engineers, St.

Louis District, St. Louis, MO.

APPENDIX D

HISTORICAL PHOTOGRAPHS NOT USED

APPENDIX E

INTERVIEWS


ARCRIVES SEARCH REPORT FOR

YOU) COUNTY AIRPORT (FORMERLY WINTER-DAVIS FLIGHT STRIP)

YOLO COUNTY, CALIF'ORNLA

DEW-FUDS PROJECT NO. J09CA009402

Interviews have been held with a number of individuals who are familiar with past operations at the Yolo County Airport. The following individuals furnished remarks pertinent to potential OEW.

Austin Wiswell Yo10 County Aqort Manager Winters, CA Office: 625 Court Street, Room 203 Woodland, CA 95695 (916) 666-8129

Mr. Wiswell has held the airport manager position for the past 3 + years. He stated the airport was mainly vacant until sometime during the 1960's. Since then the airport has been used by private small aircraft and local cropdusters. To his knowledge there have not been any incidents reported involving munitions at the airport. The County does not have original mapping of the field. He suggested that Mr. Duane Chamberlain, who has farmed the unimproved property on the airport, including the former bomb storage area, since the early 1980's, should be a good contact. His phone number is (916) 662-2620. Mr. Wiswell stated the best site map is available from the Sacramento District, Corps of Engineers office. He was aware of past investigations by the Corps.

His perception of the ordnance history from the perspective of a fighter pilot of 23 years is as follows: The field was established in mid-to-late 1942 in response to the threat of a Japanese Attack. Many up and down the coast came into existence at the same time. These were "Dispersal Bases" in the early WW II period; and thus, the flight strip had a very irregular pattern of hard stand, making the facility very hard to hit if under attack. Shortly after it was built (some 3 -6 months later), because of the U. S. success in the Pacific, the threat of attack ceased and Yolo became a base training for B25 Marshall Bombers. Useful live ordnance stored was transferred to areas where it would be put to good use, according to Mr. Wiswell. He speculated that practice bombs with spotting charges were loaded at Winters-Davis Flight Strip, and were then dropped on nearby ranges. He, however, had no records of the range locations. Live HE ordnance was, in his belief, "No longer Present" at the

Mr. Ron Marley Caretaker Yolo County Airport (916) 756-0120

Ron Marley had previously been contacted by personnel from the Sacramento District and the Environmental Department of McClellan AFB. He had discussed Environmental Hazards at Yolo Airport with these agencies and the conversation(s) can be found in backup information to the INPR filed at Sacramento District.

One item related to potential OEW contamination, mentioned in records of conversations, various data bases, and other information is that a smoke device (OEW) was found on a farm south of the field and subsequently destroyed by the county. Present discussions centered on this past incident; and his specific experience on the airport proper as caretaker.

Ron served in the EOD and, thus, is a good source of knowledge of munitions for his employer. He has stated there are a lot of "rumors about the bomb storage area". However, the has never b n an re The field has been dry farmed, and there is a possibility that ordnance could have been dumped there. (In the past he has suggested to environmental officials that perhaps infrared remote sensing or some other technique(s) could be used to verify no OEW remains.

Relative to the incident of a smoke bomb being found in the field south of the airport, he related that a rancher located the practice bomb that surfaced in his field after a 3 to 4 month period of rain, similar to what has been happening lately in California. The device had a white phosphorous content. He was fairly specific that the practice munition probably accidently detached from a WW I1 airplane. He mentioned about a 25 lb. spotting charge was associated with the device and that; because of his past EOD experience, he assisted the county with cleaning up the munition. Pilots flying from Winters-Davis Flight Strip dropped practice bombs with spotting charges, but he had no idea where the practice ranges were located.

Other items mentioned by Mr. Marley: During the mid-1980s some concrete debris was busted up. The sheriffs office had practiced with Smoke and Tear Gas on the airport property, but this is unrelated to DOD use of the land during W W 11.

Mr. Duane Chamberlain Residence and Business Office 34530 County Road 29 Yolo County, CA (9 16) 662-2620

Mr. Chamberlain was contacted at his home and business office located at 34530 County Road 29, which is about 1 mile west of the N/W corner of airport property. The following are the recollections of the conversation with Mr. Duane Chamberlain. Mr. Chamberlain indicated a long time in the past (20+ years), while farming, he tilled-up what he thought were blue practice bombs. He described these items as being about 5 to 6 inches long, with

fins, and about 2-112 inches in diameter. He briefly searched around his office for a souvenir, but was unable to find one. Based on his description, Mr. Scott Barton and Mr. William K. James, QASAS personnel with the St. Louis Distict, U.S. Army Corps of Engineers, decided that Mr. Chamberlain might be describing a miniature practice bomb such as one of the bombs identified in the Miniature 3-pound Mk3, Mk 4, AN-Mk5, and AN-Mk23; or 4.5 pound AN-Mk 43 series (Figure 3). He stated not much evidence remains of the facilities that were once part of the old Winters-Davis Flight Strip. During farming operations his employees still occasionally turn up concrete chucks and they have been instructed to bury them deeper beneath the surface. There was also some debris and junk piled into a number of concrete pits adjacent to taxiways. He speculated that there might be something left in these pits. At the Southeast corner (old bomb storage area) he mentioned there was once an oil road, but his employees broke up the road materials and spread them around with not much being left. He also mentioned that near the Fire Department facility, some concrete chunks remain piled up, and tunnels run beneath the taxiways and runway.

TELEPHONE OR VERBAL CONVERSATION RECORD DATE 01-19-95

SUBJECT OF CONVERSATtON Availability of Information on Winters-Davis Flight Strip (Yolo Co. Airport ) .

11 INCOMING CALL

PERSON CAUJNG ADDRESS PHONE NUMBER AND EXTENSION

A PEW" c-D I PHONE NUMBER AND EXTENSION

- -

OUTGOING CALL

SUMMARY OF CONVERSATION: Mr. Brimm called to find out about the Winters-Davis Flight Strip, Sub-

base of McClellan AFB during WW 11. He said to call back during the week of January 23 - 27, and he would know by then if he had information. If he did, we could then pick it up on our archive visit on January 31.

PERSON CALLING Ken Brimm

PERSON CALLED

~ g t . Charles Irwin, Historian

*Note to Pam, get the rest of this interview from Jerry. He may also have others to insert from the site survey trip report.

ADDRESS USACOE/CELMS/PD-R 1222 SPRUCE ST. ST. LOUIS, MO 63103

OFFICE McClellan AFB, Sacremento, CA

PHONE NUMBER AND EJCIENSION 014)-33 1-8797

PHONE NUMBER AND EXTENSION (916) 643-6946

APPENDIX F

NEWSPAPERS/ JOURNALS NOT USED

APPENDIX G

PRESENT SITE PHOTOGRAPB



YOLO COUNTY AIRPORT FORMERLY WINTER-DAVIS FLIGHT STRIP

Yolo County, California


APPENDIX G -- PRESENT SITE PHOTOGRAPHS

SHEET DESCRIPTION

Sheet G-1 Photo #1 Yolo Sportmen's Association - Small Arms Practice Range Photo #2 Mound north of Sportmen's Complex - view toward the northeast

Sheet 6-2 Photo #3 View of berm - Sportmen's Association is located beyond berm - view to

southwest Photo #4 Former FUDS fire water supply concrete pit

Sheet 6-3 Photo #5 Tunnels under runwaydtaxiways turned out to be drainage

structures with wing walls Photo #6 View looking west along Aviation Ave. - former bomb storage

area located on right side of roadway (cultivated land)

Sheet 6-4 Photo #7 View to southwest from unimproved ground in former bomb

storage area - depression and loose soil (cultivated land) Photo #8 Loose soil, rocks, and debris in former bomb storage area

(surrounded by cultivated land)

Sheet G-5 Photo #9 Berm on east boundary of FUDS (cultivated land) NOTE:

Berm is unrelated to F'UDS Photo #10 Hanger facilities (cultivated land) - view to northwest from

Aviation Ave.

Photo #1 Yolo Sportmen's Association - small arms practice range

Photo #2 Mound north of Sportmen's Complex - view to northeast

Photo #3 View of berm - Sportmen's Association is located

beyond berm - view to southwest

Photo #4 Former FUDS fire water supply concrete pit

Photo #5 Tunnels under runways/taxiways turned out to be

drainage structures with wing. walls

Photo #6 View looking west along Aviation Ave. - former bomb storage

area located on right side of roadway (cultivated land)

G-3

Photo #7 View to southwest from unimproved ground in former bomb storage

area - depression and loose soil (cultivated land)

Photo #8 Loose soil, rocks, and debris in former bomb storage area

(surrounded by cultivated land)

Photo #9 Berm on east boundary of FUDS (cultivated land)

NOTE:Berm is unrelated to FUDS

Photo #10 Hanger facilities (cultivated land) - view to

northwest from Aviation Ave.

APPENDIX H

HISTORICAL MAPSLDRAWINGS NOT USED

APPENDIX I

RISK ASSESflMENT CODE PROCEDURE FORMS

18 Apr 94 Previous editions obsolete

RISK ASSESSMENT PROCEDURE FOR ORDNANCE AND EXPLOSIVE WASTE (OEW) SITE

Site Name Yolo Countv Airport Rater's Name Gerald V. Schwalbe JWinters-Davis Fliaht Strip\

Site Location Yolo County. California Phone No. 314-331-8788 DERP Project# J09CA009402 Organization CELMS-PM-M Date Completed 9 March 1995 RAC score 4

OEW RISK ASSESSMENT:

This risk assessment procedure was developed in accordance with MIL-STD 882C and AR 385-10. The RAC score will be used by CEHND to prioritize the remedial action at Formerly Used Defense Sites. The OEW risk assessment should be based upon best available information resulting from records searches, reports of Explosive Ordnance Disposal (EOD) detachment actions, and field observations, interviews, and measurements. This information is used to assess the risk involved based upon the potential OEW hazards identified at the site. The risk assessment is composed of two factors, hazard severity and hazard probability. Personnel involved in visits to potential OEW sites should view the CEHND videotape entitled "A Life Threatening Encounter, OEW."

Part I. Hazard Severity. Hazard severity categories are defined to provide a qualitative measure of the worst credible mishap resulting from personnel exposure to various types and quantities of unexploded ordnance items.

TYPE OF ORDNANCE (Circle all values that apply)

A. Conventional Ordnance and Ammunition VALUE

Medium/Large Caliber (20mm and larger) 10

Bombs, Explosive 10

Grenades, Hand and Rifle, Explosive 10

Landmines, Explosive 10

Rockets, Guided Missiles, Explosive 10

Detonators, Blasting Caps, Fuzes, Boosters, Bursters

Bombs, Practice (w/spotting charges)

Grenades, Practice (w/spotting charges) 4

Landmines, Practice (w/spotting charges) 4

Small Arms (.22 cal - .50 cal) 1

Conventional Ordnance and Ammunition (Select the laraest sinale value1

What evidence do you have regarding conventional OEW? Within the last 15- 20 veara. Mr. Duane Chamberlain reD0rted his farm eauiment turned up miniature 3 or 4.5 ~ractice bombs while ~lantina undevelo~ed around on the airport. These practice munitions were painted blue.

B. Pyrotechnics (For munitions not described above)

Munition (Container) containing White Phosphorus or other Pyrophoric Material (i.e., Spontaneously Flammable)

Munitions Containing A Flame or Incendiary Material (i.e., Napalm, Triethylaluminum Metal Incendiaries)

Flares, Signals, Simulators, Screening Smokes (other than UP)

VALUE

10

Pyrotechnics /Select the laraest sinale value1 - 0

What evidence do you have regarding pyrotechnics? None

C. Bulk High Explosives (Not an integral part of conventional ordnance; uncontainerized . )

VAtUE

Primary or Initiating Explosives (Lead Styphnate, Lead Azide, Nitroglycerin, Mercury Azide, Mercury Fulminate, Tetracene, etc.)

Demolition Charges

Secondary Explosives (PETN, Compositions A, B, C Tetryl, TNT, RDX, HMX, HBX, Black Powder, etc.)

Military Dynamite 6

Less Sensitive Explosives (Ammonium Nitrate, Explosive Dl etc.)

High Explosives (Select the laraest sinale value) 0

What evidence do you have regarding bulk explosives? None, there have been no incidents of HE OEW ever beina encountered on the Yolo County Airport.

D. Bulk Propellants (Not an integral part of rockets, guided missiles, or other conventional ordnance; uncontainerized)

VALUE

Solid of Liquid Propellants 6

Propellants 0

What evidence do you have regarding bulk propellants? The FUDS is a commercial airfield and fuel is stored on the site by Yolo County. Some fuel lines datina from WW I1 remain beneath the around surface, taxiways. and runways. DOD era fuel tanks have been removed.

RAC Worksheet - Page 2

E. Chemical Warfare Material and Radiological Weapons VALUE

Toxic Chemical Agents (Choking, Nerve, Blood, Blister)

War Gas Identification sets

Radiological

Riot Control Agents (Vomiting , Tear ) Chemical and Radiological Agents (Select the laraest sinale value1 - 0

What evidence do you have of chemical/radiologica1 OEW? none

Total Hazard Severity Value (Sum of the Largest Values for A through E--Maximum of 61). - 6 Apply this value t o Table 1 t o determine Hazard Severity Category.

TABLE 1

CATASTROPHIC I 21 and greater

CRITICAL ~~~ NEGLIGIBLE

* Apply Hazard Severity Category to Table 3

**If Hazard Severity Value is 0, you do not need to complete Part 11. Proceed to Part I11 and use a RAC Score of 5 to determine your appropriate action.


Part 11. Hazard Probabilitv. The probabili ty t ha t a hazard has been o r w i l l be created due t o t he presence and other ra ted fac tors of unexploded ordnance o r explosive materials on a formerly used DOD s i t e .

AREA, EXTENT, ACCESSIBILITY OF OEW HAZARD (Circle a l l values t h a t apply)

A. Location of OEW Hazards VALUE

On the surface 5

Within Tanks, Pipes, Vessels o r Other confined locations

Inside walls, cei l ings , o r other pa r t s of Buildings and Structures

Subsurface

Location JSelect t h e s ina le l a r aes t value1

What evidence do you have regarding location of OEW? Past farm operations have uncovered a number of miniature pract ice bombs near former bomb storaae area.

B. Distance t o nearest inhabited locations or s t ructures l i ke ly t o be a t r i s k from OEW hazard (roads, parks, playgrounds, and buildings).

VALUE

Less than 1250 f ee t 0 1250 f ee t t o 0.5 m i l e s 4

0.5 m i l e s t o 1.0 m i l e s 3

1.0 miles t o 2.0 miles 2

Over 2 miles 1

Distance (Select t he s ina l e largest value) - 5

What a re t he nearest inhabited s t ructures? Nearbv a re residences and the normal commercial and recreat ional business and s u ~ w r t f a c i l i t i e s associated with a i r ~ o r t use. The nearest residence i a a farm residence located within about 200 f ee t of t he o r i a ina l bomb storaae area south boundarv.


C. Numbers of buildings within a 2 mile radius measured from the OEW hazard area, not the installation boundary.

VALUE

26 and over

Number of Buildings (Select the sinale laraest value) - 5

Narrative The immediate area has farms, residences. and airport facilities and businesses.

D. Types of Buildings (within a 2 mile radius) VALUE

Educational, Child Care, Residential, Hospitals, Hotels, Commercial, Shopping Centers

Industrial, Warehouse, etc. 4

Agricultural, Forestry, etc. 3

Detention, Correctional 2

No Buildings 0

Types of Buildings (Select the laraest sinale value) - 5

Describe types of buildings in the area. Residential, Commercial, Industrial, and Aaricultural all are within 2 mile radius of the airport. The City of Davis boundarv is within 2 miles.


E. Accessibility to site refers to access by humans to ordnance and explosive wastes. Use the fol.lowing guidance:

BARRIER VALUE

No barrier or security system 5

Barrier is incomplete (e.g. in disrepair or does not 4 completely surround the site). Barrier is intended to deny egress from the site, as for a barbed wire fence for grazing.

A barrier, (any kind of fence in good repair) but no 3 separate means to control entry. Barrier is intended to deny access to the site.

Security guard, but no barrier 0 Isolated site 1

A 24-hour surveillance system (e-g., television monitoring or surveillance by guards or facility personnel) which continuously monitors and controls entry onto the facility; or An artificial or natural barrier (e-g., a fence combined with a cliff), which completely surrounds the facility; and a means to control entry, at all times, through the gates, or other entrances to the facility (e.g., an attendant, television monitors, locked entrances, or controlled roadway access to the facility).

Acceaaibility (Select the sinale laraest value) - 2

Des~cribe the site accessibility. Althoucrh the site has some limited eecuritv, it is easilv accessed bv the public.

F. Site Dynamics - This deals with site conditions that are subject to change in the future, but may be stable at the present. Examples would be excessive soil erosion by beaches or streams, increasing land development that could reduce distances from the site to inhabited areas or otherwise increase accessibility.

VALUE

Expected 5

None Anticipated 0

Site Dynamics (Select laruest value) - 0

Describe the site dynamics. A zero value is assianed, but periodic ex~ansion and develoment of airport support facilities and commercial businesses would be ex-cted on this FUDS.


-------.----------------------------------------------------------------------- .............................................................................. Total Hazard Probability Value (Sum of Largest Values for A through F--Maximum of 30) - 19

Apply t h i s value ,to Hazard Probability Table 2 t o determine Hazard Probability Level.

TABLE 2

HAZARD PROBABILITY -------,-----------------------------------------------------------------------

Description Leve 1 Hazard Probability Value

FREQUENT A 27 or greater

PROBABLE

REMOTE

IMPROBABLE E less than 8

Apply Hazard Probability Level t o Table 3.


Part 111. Risk Assessment. The risk assessment value for this site is determined using the following Table 3. Enter with the results of the hazard probability and hazard severity values.

TABLE 3

Probability Level A B E

Sever it y Category :

CATASTROPHIC I

CRITICAL I I 1 2 3 4 5

~~~i 2 3 a 4 5

NEGLIGIBLE IV 3 4 4 5 5

RISK ASSESSMENT CODE (RAC)

RAC 1 Imminent Hazard - Expedite INPR - Immediately call CEHND-ED-SY-- commercial (205) 955-4968 or DSN 645-4968

RAC 2 High priority on completion of INPR - Recommend further action by CEHND.

RAC 3 Complete INPR - Recommend further action by CEHND. RAC: 4 Complete INPR - Recommend further action by CEHND.

RAC 5 Recommend no further action. Submit NOFA and RAC to CEHND.

-------,------------,----------------------------------------------------------- .............................................................................. Part IV'. Narrativq. Summarize the documented evidence that supports this

risk assessment. If no documented evidence was available, explain all the assumptions that you made.

A hiah priority should not be assianed to further OEW remedial action on this

FUDS. Conditions ~ermittina, and assumina availabilitv of fundina, it would

probab1.v be ap~ropriate to perform maunometer sweep investiuations: or other

around penetratina survevs (infrared thermoaravhv, sonar, etc.) in the area of

the former bomb storaae area. Althouah none have been found in manv years,

practice munitions have previouslv been uncovered durina farmina operations.

This survev would be a~pro~riate, ~articularlv if U ~ O U D ~ ~ with a number of

other next phase investiaations. Local official have no real concern for the

potential OEW hazard.


APPENDIX J

REPORT DISTRIBUTION LIST

ORDNANCE AND EXPLOSIVE WASTE CHEMICAL WARFARE MATERIALS ARCHIVES SEARCH REPORT

FOR YOLO COUNTY AIRPORT

(FORMERLY WINTER-DAVIS FLIGHT STRIP) YOLO COUNTY, CALWRNIA


APPENDIX J - REPORT DISTRIBUTION LIST

Addressee: Co~ies:

Commander, U. S . Army Engineer Division Huntsville, ATIN: CEHND-ED-SY-A P.O. Box 1600 Huntsville, Alabama 35807-4301

Commander, U. S . Army C hemical Materiel Destruction Agency Attn: SFIL-NSM, Bldg. E4585 Aberdeen Proving Ground, MD 2 1010

Commander, U S , Army Chemical & Biological Defense Command Attn: AMSCB-CIH, Bldg. E5 183 Aberdeen Proving Ground, MD 2 10 10-5423

U.S. Army Technical Center for Explosives Safety Attn: SMCAC-ESh4 Savanna, IL 61074-9639

Commander, Corps of Engineers - Sacramento District 1325 J Street Attn: CESPK-ED-M Sacramento, CA 958 14-2922

CELMS-ED-G CELMS-ED-H CELMS -PD- A CELMS-PM-M

No. of

Appendices J- 1

APPENDIX K

ARCMlVE ADDRESSES





DERP-FUDS PROJECT NO. J09CA00940 1

APPENDIX K - ARCHIVE ADDRESSES

1. National Archives And Records Administration. D.C. Branch Eighth and Pennsylvania Washington D. C. 20408

2. National Archives And Records Administration. Suitland Branch 4205 Suitland Road Suitland, MD 20409

3. Washington National Records Center 4205 Suitland Road Suitland, MD 20409

4. National Archives And Records Administration. College Park Branch 8601 Adelphi 'Road College Park, MD 20740

5. National Personnel Records Center Military Records 9700 Page Avenue St. Louis, MO 63132

6. Chemical and Biological Defense Agency Historical Office AMSCB-CIH Aberdeen Proving Ground Edgewood, MD 21010

7. U.S. Air Force Historical Center Bldg . 1405, C hennault Circle Maxwell AFB, AL 36112

Appendices K- 1

8. National Archives And Records Administration-Pacific Sierra Region 1000 Commodore Drive San Bruno, CA 94066

9. Sacramento H ~ S ~ O N Center Sacramento, CA 95814

10. California State Library California Section 9th and Capitol Mall Sacramento, C.A 95809

11. California State Archives 201 N. Sunrise: Avenue Roseville, C A

12. University of California. Berkeley Main Library Berkeley, CA 94704

13. Universitv of California. Berkeley Bancroft Library Berkeley, CA 94704

14. Sacramento Public Library Sacramento, CA 95809

15. Universitv of California. Sacramento Main Library Sacramento, CA 95809

16. Woodland Public L i b r a ~ Woodland, CA 95695

17. Universitv of California. Davis Main Library Davis, CA 95616

18. Yolo Countv Public Library Davis, CA 95616

19. Yolo Countv Archives Woodland, CA 95695

20. Yolo County Planning; Department Woodland, CA 95695

Appendices K- 2

SITE SURVEY SUMMARY SHEET FOR

DERP-FUDS SITE NO. J09CA009400 YOLO COUNTY AIRPORT

SITE NAME: Yolo County Auport. The site was formally known as the Winters-Davis Flight Strip and the Yolo County International Air Port.

LOCATION: The site is located in Yolo County, CA approximately 8 miles northwest of downtown Davis, California. More specifically it is located between county roads 95 and 96 running north south and roads 29 and 31 running east west. See location and vicinity maps at attachments 1 and 2.

SITE HISTORY: Between 1942 and 1943 the U.S. Government acquired by declaration of taking 308.57 acres and by transfer 201.58 acres, for a total of 510.15 acres, for use as a flight smp to provide alternate basing for B25 aircraft normally located at McClellan Air Force Base. Site improvements included a runway, taxiways, two aircraft fueling areas, an operations area, control tower, bomb storage area, and housing area.

In 1946, the use permit for 201.58 acres was relinquished to the Public Roads Ad- ministration (PRA) and the remaining 308.57 acres transferred to the War Assets Administration (WAA). In 1948 the WAA transferred 294.40 acres, along with the 201.58 acres from the PRA, to the County of Yolo for use as an airport. The remaining 14.17 acres horn the WAA reverted to the original owners.

SITE VISIT: a. On 26 Jan 87, Mr. Kent R Westover from the Sacramento Dismct visited the site to assess the current conditions and met with the following persons:

Mr. Earl Balch Director of Parks, Museum and Grounds County of Yolo 625 Court St., Room B-03 Woodland, CA 95695 (916) 666-81 15

Mr. Ron Marley Caretaker, Yolo County Airport, CA (916) 756-0120

b. On 27 Mar 87, Mr. Westover and Mr. Marley met with on site with Mr. Lamy Curtis, of Curits & Associates, concerning the disposition of underground storage tanks.

Mr. Lamy Curits Curtis & Associates P.O. Box 924 Woodland, CA 95695 (916) 753-4950

c. On 23 May 91, Ms. Sharon Bruno met on site with Messrs. Earl Balch, Ron Marley and Frank Hildebrand, Managing Partner, Yolo Aviation.

The site has experienced considerable development since the initial site visits in 1987. Messrs. Marley and Hildebrand reported both of that the two original 25,000 gal underground storage tanks,along with a new 10,000 gal tank, have been removed from the airport. Further, one smoke device (OEW) was found on a farm south of the airport and was destroyed by the County. The bomb storage area at the south end of the field is essentially under cultivation, except for a strip of ground covered by trees. Among the trees is a ridge of earth, approximately 5 feet high, strewn with concrete rubble. No intact structures were visible.

CATEGORY OF HAZARDS: CON/HTW, OEW

PROJECT DESCRIPTION: -CON/HTW: Removal of underground piping and ~ 0 ~ e c t e d fill stands and fuel-

ing pit boxes at 4 locations. Test sites where tanks have been previously removed. --OEW.: There are 16 known locations for either Bomb Storage Revetments or

Fuse Storage Magazines.

AVAILABLE STUDIES AND REPORTS: None

PA POC: Larry M. Bergmooser, CESPK-ED-M, 916/557-7671

FINDISCS AND DETERMINATION OF ELIGIBILITY YOLO COUNTY AlRPORT

YOLO, CALIFORNIA SITE NO. J09CA009400

FINDIYGS OF FACT

1. By use permit from the U.S. Public Roads Administration, dated 3 November 1943, 201.58 acres were transferred to the War Department. An additional 308.57 acres in total were acquired by the War Department by Declaration of Taking between 1942 and 1943, for a total 510.15 acres.

2. The site was used as a flight smp to provide alternate basing for B25 aircraft normally located at McClellan Air Force Base. Site improvements included a runway, taxiways, two aircraft fueling areas, an operations area, control tower, bomb storage area, and housing area.

3. The use permit for 201.58 acres was relinquished to the Public Roads Administration (PR4) on 12 April 1946. The remaining 308.57 acres transferred to the War Assets Admnistration (WAA) on 2 1 September 1946. A total of 294.40 acres were transferred by quitclaim deed from the WAA on 13 June- 1948, along with the 201.58 acres from the PR4, to the County of Yolo for use as an airport. The remaining 14.17 acres from the WAA reverted to the original owners, Mr. and Mrs. Thomas E. Reardon. The quitclaim deed includes a recapture clause. The 495.98 acre site is currently owned by the County of Yolo and ualized as the Yolo County Airport. The 14.17 acre portion of the site is owned by St. Mary's College and used for agriculture.

DETERMINATION

Based on the foregoing findmgs of fact, the site has been determined to be formerly used by the DOD. Therefore, it is eligible for the Program for Formerly Used Defense Sites, established under 10 U.S.C. 2701 et seq.

9 D-t 1 Date

Brigadier General, U.S. A m y Cornmandin g

STATE INDEX


VICINITY M AP SCALE \rr MILLS

F= b . - --.

0 \ Z 3-4

STATE INDEX

4 - - , SCALE l:24 000

1 o 1 MILE F-- - 1

loo0 0 1 3 0 0 X X X ) Y R O r O Q ) U X X ) 6 0 4 ) m m c - - 1

1 w - - - -

5 0 4 I I[lUHIETCR


VICINITY \ M AP

L A Y O U T PLAN Sea\. I-. foe'

Figure 1

Regional Map

Yolo County Airport

Figure 2 - Site Location Map

5 BALLOON LAUNCH AREA 5 RIFLE RANGE

AIRPORT MANAGER

TE

CROP DUSTER LANDING AREA / COUNTY ROAD 95 LlLLARD HALL

FlRE STATION CARETAKER QUARTERS FIRE STATION

LIGHTED SIREN TOWER Z-

YOLO C O U N N AIRPORT GRAPHIC SCALE 0 500' 1000' -

I FIGURE 3- YOLO COUNTY AIRPORT, YOLO COUNTY. CALIFORNIA

WOODLAND AVIATION INC.

25.000 GALLON UST PARKING AREA (PREVIOUSLY REMOVED)

NATIVE SOlL (DIRT) POST -* FUEL LINES (NPICAL)

I

CONCRETE C O N C R m

SEE NOTE 1

ELECTRICAL y r SEWER MANHOLES - I I

GRASS AREA

CONCRETE APRON I

SEE NOTE 1 -

NATIVE SOlL (DIRT)

CONCRETE

ENTRANCE ROAD

BE REMOVED

NATIVE SOlL (DIRT)

NOTE 1: PIPING UNDER CONCRETE TO BE TAXIWAY CLOSED IN PLACE

AMENDMENT 91

GRAPHIC SCALE: 1" =60' ' 20' 40' 60' 120' 180' 240' 300'

I I I I I 1 1 1

FIGURE 4- SOUTH END OF AIRPORT WOODLAND AVIATION BUILDING

CONCRETE

- BEHIND HANGAR

CONCRETE 'ONCRETE STOCKPILE OF SOll

4-INCH UNDERGROUND

(TYPICAL)

FUEL PlTS 4'6" x 7'4")

-SEE NOTE 1 i 4 SEE NOTE 1 .

BE REMOVED

NATIVE SOIL (DIRT)

CONCRETE

AND REMOVED FUEL DISPENSING 4-INCH PIPING

L PRNIOUSLY REMOVED PIPING -------=-G

FUEL PlTS TO BE REMOVED (4'6" x 7'4")

UNDERGROUND FUEL LINES

NOTE 1: PIPING UNDER CONCRETE TO BE CLOSED IN PLACE

z- GRAPHIC SCALE: 1" =60' TAXIWAY AMENDMENT 81

I TAXIWAY 0' 20' 40' 60' 120' 180' 240' 3?0' I I I R P O R T

I I I I I I I I I I I I PRESTAR BUILDING

. . . -. . . .

TWRR mmaw . . . YOLO COUNTY

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STATE' INDEX .

CAUTICN- ' r . , , , , ;si .,;-. :- .. r .

SEC. 33 B 3 4 , T . 9 N . , R . 1 E . , M . D . B . B M .

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U.J. Army Corps of Engineers I

Yolo County Airport

Formerly Used Defense Sites (FUDS) . Site No. J09CA0094

0 Site Area

Public FUDS GIs Property Location Check Sheet

To: GERALD VINCENT

J09CA0094 YOLO COUNTY AIRPORT

Latitude 3 8 O 35' 56" N

Longitude 121 51' 46" W

Location of FUDS propeny accurate

Updated Property Coordinates have been entered into FUDSMIS