Loading...
HomeMy WebLinkAboutACSA199900001 Executive Summary 1999-02-25 . pow COUNTY OF ALBEMARLE RECEIVE FEB 5 ;9 EXECUTIVE SUMMARY planning Dept. AGENDA TITLE: AGENDA DATE: ITEM NUMBER: Public Hearing--ACSA Jurisdictional Area Amendment March 3, 1999 Request for Water Service, GOCO Oil Co. ACTION: X INFORMATION: SUBJECT/PROPOSAL/REQUEST: CONSENT AGENDA: Public hearing to consider amending the ACSA ACTION: INFORMATION: Jurisdictional Area to provide water service to GOCO Oil Gas station on Route 250 East in Shadwell (TMP 79-18). ATTACHMENTS: X STAFF CONTACT S : REVIEWED BY: /Mit Messrs. Tucker, Benish BACKGROUND: The applicant, GOCO Oil Company, requests Jurisdictional Area designation for water service to the GOCO Oil gas station at Shadwell. The one-acre parcel is located on the north side of Route 250, adjacent to the Norfolk Southern railroad, and is designated as Rural Area in the Land Use Plan (Attachment A). The request for water service is due to the contamination of the well serving this site with the gasoline additive Methyl Tertiary Butyl Ether(MTBE) (Attachment B). The Board reviewed a request for water service on this site on March 3, 1993. Although there was evidence of water quality problems at that time, the Board denied the request for water service because an alternative site for a new well was available (prior staff report, Attachment C). The current request was reviewed by the Board on January 6,1999 at which time it was decided to proceed to public hearing once information was provided regarding the extent of current contamination on-site DISCUSSION: The Virginia Department of Environmental Quality has confirmed the existence of petroleum within the existing water supply. This is the second well at this facility to become impacted by the documented petroleum release. A new petroleum release has not occurred on site, therefore, it is presumed that the contamination of the second well is a result of a prior petroleum release that affected the first well. Staff has discussed the extent of the contamination on-site with DEQ staff. DEQ believes that the contamination is the result of leaks, spills and overfills that occurred in the past at the old loading racks on site. DEQ believes that the contaminant plume is stable based on the test results from monitoring wells (and stream)located on site, and tests of wells on adjacent properties. Due to its stable condition and limited size, it does not pose a significant threat and clean-up measures are not required at this time. Mr. Ronald Phillips Senior Hydrogeologist with the DEQ has provided additional information regarding history of recorded petroleum contamination at this site (Attachment D). DEQ representatives will be present at the public hearing. The Land Use Plan provides the following concerning sewer service to the Rural Area: General Principle: Utilization of central water and/or sewer systems or extension of the public water or sewer into the Rural Area is strongly discouraged except in cases where public health or safety are at issue. Recommendation: Only allow changes in jurisdictional areas outside of designated Development Areas in cases where the property is:(1) adjacent to existing lines;and, (2)public health or safety is endangered. An existing water line serving the Rivanna Village is located along Route 250 adjacent to this property. This line was intended to serve the Rivanna Village and Stone Robinson Elementary School only. The Land Use Plan recommends that the capacity of the line should be"reserved...for a potential for a potential new school in the Village until such time it is determined that the school is not necessary (p. 99)." The GOCO Oil station is a relatively low water user. Typically, there is only one employee at the site and public use of water is not considered significant. Therefore, while not fully consistent with this Plan recommendation, the level of water use at this site will not have a significant impact to the water line's capacity. The issue of public health and safety is of higher priority in this case. AGENDA TITLE: Public Hearing--ACSA Jurisdictional Area amendment request for water service, GOCO Oil Co. March 3, 1999 Page 2 This request is being made under the recommendation noted above. Verification of endangerment to public health or safety is provided in the attachments. Connection to the existing water line is the best long-term solution for providing potable water to the site, according to DEQ. Drilling a new well or the continued use of the existing well in combination with bottled water is not considered a viable long-term option. The existing well could be mounted with a carbon filter system to treat the withdrawn water. However, this option is cost prohibitive over the long-term and raises issues of long-term management/maintenance. Continued use of a well on-site would also likely encourage migration of the contaminant within the sub-surface hydrogeologic system and to the surface water system, if its release is not adequately controlled. Ceasing use of the wells would better ensure that the plume remains stable. RECOMMENDATION: Based on information provided by DEQ, the request is consistent with the Land Use Plan strategies for the provision of service outside the designated Development Area in order to address an of public health or safety. Staff recommends including the property, described as Tax Map 79, Parcel 18 (GOCO Oil), into the ACSA Jurisdictional Area for water service only to existing structures (one gas station sales building). Cc: Mr. J. William Brent 99.039 { . • ATTACHMENT A , ALBEMARLE COUNTY 63 ' 's\•vs•'*. ...,‘.• * , ( \ / ,----• \ • Ilib **-1-. 7-' , \ \\\ ` 5A ) . 1 \A" \ i, ` . ti 11 \ • `,,,,\ . ( 1-- x . Ilk- ..."------...\,.''''.C.: I - 1111 i NI\( / E \ . • \ ., 3\ \�\`\,\ V'i�.. ,, \\\\ \% l ,1 , I -may!- .. rI I )7 �: / ' is \'. )"... ---:-. ----,,:><.,----, ,..--i-Nks.* 5e 1 ,,,,,, 12 A r \ 1: , .1 ,ices.\ �\ \• .......,:.) �\ \. 1/..:,.p.; II \\..., \• ? 2A • / ,/ \ \ I ( ' CfC � _ 7 ----------.---------H__-:,....,„..._.____.„...::----!------ AOU>r •- � 44 ri•*--( --- ---f.----•'. . l'il i'l, /9,/,/i,SECalp!,79A://7.4y//,./////,,„ 7A $HAOWE 170 i ��/ '. Tar \ �.r' _ �• �,!.� vim` '/,///,,,/,',// / ANC GMA7 �_ 16 ,/IS ! - •P i/i/// • .r�_i 2C �� al 73� _ /./ GHESp7EaKE RNaNN{i-.—3�. 22 I • •7♦ / 2Y ' /// /! - 2/11 1 e; >i ( 6 c r,irE3 `�n�n 1rts / /. r \I, 3•E 23 \27 t 23\)% j �"' p' "N i .. .\, '„ ..J\ ,\ ``\ SE: ' f• ':/•i%/// - 12 A, FIG... '2' . -..... .• - ... /' '''/'.o.` .). '— <3• )ie y - 9L,1n.. c-7 S• L . — 25/ 26 .›`-� /,/;, ' /_ )•ate <y: : ` -SjQ.3- - -- S2 q:29 ...' _...--UP._ ,'.=lc-',-. CI.' a: .44-4 RIVANNA AND CP(TlC N 79 • L ATTACHMENT B • 'All, .'M1I �� � 1 'I • , 9 COMMONWEALTH of VIRGINIA DEPARTMENT OF ENVIRONMENTAL QUAL 7Y: ({� • i_ `'_iY,.! .. ._. L. i. .lie 170- :,.l i".t..I Sr': I` D'S 1. "A: -t wai a;Valley Regional Office •,1 �... r:.•: James S.Gilmore,III - - Dennis H.Treacy Governor Street address:4411 Early Road, Harrisonburg, Virginia 2'2801 Director Mailing address: P.Q. Box 1129, Harrisonburg, VA 22801-1129 n Telephone (540) 574-7800 Fax (540) 574-7878 John Paul Woodley,Jr. http://www.deq.state.va.us - R.Bradley Chewning,P.E. Secretary of Natural Resources Valley Regional Director November 6, 1998 Mr. Harry Montague GOCO Oil Co. 924 Harris St. Charlottesville, VA 22903 Re: Request for Corrective Action Plan, GOCO Bulk Plant, Shadwell DEQ Tracking Number: PC 89-1392 Dear Mr: Montague: The Department of Environmental Quality (DEQ) was notified on July 21, 1998, that the potable well serving the above facility was contaminated with petroleum. In response to the report, DEQ sampled the well on July 23, 1998. The laboratory results confirmed the presence of MTBE in the water, and you were notified of the results on August 4, 1998. DEQ decided to postpone further action at the site until the completion of a previously initiated AST closure. Based on a review of the AST closure documents received at this office on October 16, 1998, it appears that a new petroleum release has not occurred at the facility. Accordingly, the contamination in the potable well is presumed to have occurred as a result of a petroleum release previously investigated under PC 89-1392. Given this determination, DEQ has decided to reopen PC 89-1392. Since the potable well is the second well at the facility to become impacted by the documented petroleum release, DEQ believes that the best option for a safe potable water supply is to connect to the Albemarle County Service Authority (ACSA) water supply running along Route 250. Please submit a Corrective Action Plan (CAP) by December 7, 1998, outlining a schedule to connect to the ACSA water supply. If ACSA will not agree to your request for • connection, DEQ will attempt to negotiate with ACSA on your behalf. Since the petroleum release occurred from an AST system and additional impact to the surrounding community is not anticipated, public notice of the CAP will not be required. Upon receipt and approval of the CAP, DEQ will grant a CAP Permit with instructions for initiating • it Y . -S 1 y" w g dry Montague <mher 6, 1998 • the CAP Implementation Phase. If you intend to seek reimbursement for the CAP,please submit an Activity Authorization Form (AAF) for the CAP Development Phase. If you have any questions, please contact Ron Phillips of this office at 540-574-7846. Sincerely, R. McChesney Sterre , C.P.G. Petroleum Program Manager cc: UST File Dave Chance-OSRR Ron Phillips-VRO Nsfrib;;,ed to Eestd: OAF A.e4, Agenda It2 1 No. (� g`'Qk• can . h NU ATTACHMENT C • COUNTY OF ALBEMARLE ." ; Dept. of Planning & Community Development 111 11 401 McIntire Road ccN • Charlottesville, Virginia 22902-1596 r (804) 296-5823 �J • MEMORANDUM TO: Albemarle County Board of Supervisors FROM: V. Wayne Cilimberg, Director of Planning & Community V Development (W� DATE: February 26 , 1993 RE: Albemarle County Service Authority (ACSA) Jurisdictional Area Amendment for David W. Booth/Sandra Andrews and Sherwood Exum (GOCO, Inc. ) - Tax Map 79 , Parcels 18 and 19 This item will be before you as a public hearing on March 3 , 1993 . Enclosed is the original report on this matter from October and subsequent information regarding each parcel. Tax Map 79 , Parcel 19 (Booth/Andrews ) Samples from the well on this property were taken by Applied Technology and Engineering, P.C. (January 28 , 1993 letter frpm John W. Walenten) . The Department of Engineering has provided response (February 24 , 1993 memo from Jack Kelsey) . Engineering staff does not find that jurisdictional area amendment is adequately justified. Tax Map 79 , Parcel 18 (GOCO) This property was the subject of the August 14 , 1989 State Water Control Board letter and the "Site, Risk and Remediation Assessment of Groundwater Contamination at the Shadwell "76" Station Shadwell, Virginia" report. Substantial petroleum contamination was found in the domestic well supply at this site. A Corrective Action Plan (page 24 of the report) was identified. It has since been found that the line carrying runoff from the gravel area near the unloading rack is not a source contaminating Albemarle County Board of Supervisors February 26, 1993 ___._• Page 2 •. ' • . .iRAM.3 1( `it1UO3 -. nt the well. According to Mr. Harry Montague, a representative of GOCO, it is now believed that contamination of the unloading rack area and contamination of4:the well were unrelated. The well is • believed to be the source of isolated contamination resulting from vandalism. The well is no longe ' being used as there is only one employee on-site. GOCO has not attempted to establish another domestic well on-site, although monitoring wells established for the assessment indicate the contamination was localized. Summary As stated previously, utility service outside of designated growth areas has typically been limited to those cases where properties have experienced quality/quantity problems and are adjacent to existing lines. Booth/Andrews desires water only and: has a documented coliform level not acceptable for drinking water. However, the recommended procedure for resolution of this problem has not been undertaken. Staff does not recommend jurisdictional area amendment for Parcel 19 (Booth/Andrews ) until the four step procedure for resolving the coliform problem has been exhausted. GOCO desires water only to existing structures and has documented localized petroleum contamination. No new well source has been attempted to be established. The use of the site is restricted by its non-conforming zoning status and on-site activities do not require more than domestic water needs. Staff does not recommend jurisdictional area amendment for Parcel 18 (GOCO) until evidence is provided that no other on-site water source is available. VWC/mem cc: Booth/Andrews Exum Bill Brent Jo Higgins IYDROSYSTEMS INC c,eU 3 3 • �cs March 2, 1993 'On \ffl I !F .1.0 ::iiF{� � �l iN4T A� ...:r�•93 �.;,:1.v !.0 Mr. Harry Montague, President 3 • • , GOCO OIL Company 924 Harris Street Charlottesville, VA 22901 RE: Site Selection for New Water Supply Well, Shadwell Store, Route 250. Dear Mr. Montigue: Per. your request, I have analyzed the groundwater data for the above referenced Site to determine the best location for the placement of a new water supply well on GOCO's property. The data I reviewed is contained in the June 12, 1990 report HYDROSYSTEMS prepared for submission to the Virginia State Water Control Board and is titled "Site, Risk, and Remediation Assessment of Groundwater Contamination at the Shadwell 76 Station, Shadwell, Virginia". As you are aware, the current water supply well is contaminated with petroleum, mainly in the form of gasoline type compounds. Benzene concentrations greatly exceed the U.S. EPA and Virginia Drinking Water Standard of 5 ppb. Benzene is a known carcinogen. To evaluate potential new water supply well locations on GOCO's property, I reviewed all of the existing data including water quality, groundwater flow direction, potential sources of contamination, geologic conditions, and available area. Because of the existing severe contamination in the upgradient areas of the site, the use of a septic field to the north of the Station, the existence of an underground storage tank, unpaved dispensing areas, and groundwater flow to the northwest, HYDROSYSTEMS has determined that most of the property is absolutely unsuitable for the installation of a water supply well. Wells placed within this area will either immediately encounter contaminated groundwater or will upon usage draw in contaminated groundwater from other areas of the site once the well is placed in operation. This leaves one small area at the southern point of the site. Placing a water supply well here will be a gamble at best. Well MW-4 was contaminated with total petroleum hydrocarbons just above the Virginia Drinking Water Standards. The source of this contamination is not known. In addition, the most highly contaminated monitoring well on site is only 135 feet away at the loading rack. It is very possible that a water supply well in this location will draw in 2340 Commonwealth Drive • Suite 202 • Charlottesville • VA • 22901 onn Q7 7nn _ Mr. Harry Montague t . i O March 2, 1993 Page 2 contaminated groundwater from the site to the north. In my experience, this is not an uncommon occurrence. I am currently working on a case in Albemarle County where a new well drilled 250 feet up hill from an'area of gasoline contamination became contaminated after • it was put into use. Everyone assumed the well was far enough away and was upgradient of the contamination. Because of the fractured nature oftlre bedrock aquifer systems in Albemarle County, the influence of a pumping well can reach long distances along those fractures, even pulling in groundwater from downgradient areas as was seen in this case. Because of the severity of the groundwater contamination at this site and the existing geologic conditions, HYDROSYSI'EMS cannot recommend the placement of a water supply well on the GOCO property. We are not comfortable with the minimal isolation distances available. We would instead recommend that a location on one of the surrounding properties be considered or if possible tapping into the proposed water main. If you have any questions concerning this letter report or if you wish to pursue potential off-site well locations, please contact me at your convenience. Y.e s T ly, ti e frey' . Sitler, CPG Executive Vice President Attachment uvnoncvcrcAnc . I • . .C:0; RAILROAD ' T • " r 1-1---i---1----t "" '• 'i !---: • -! i !--.. I •! 1 • : : --:- : ••;••----r- ; ;••-•;- ; ...! ! 1 i --i.-------1------.... , • ---: ---•:•••-•%--,* i•••••• ; i :•i•• i ..: ...• l•-7i”--•-__% • ; . -4---4 i* • 4. ____....._.... "...--...-.., ***.....b.. .--_ ______ -------- r --.... --..... -------. ......-.-__ --"' ........ ........ ........ •bl..11 --..---..., ..... *Ur i ....... ....• . > --":7-.. ..... ........ ...... • ••••.....:__. • ''... - •=....-1...._........ •3.4 I. ....-.... . ....ol (".-- ...-1°---".-6.-----------•-- ------------.-I " 6 * -•-•••-•""!!---"'""".."..'....--3".:".....r.::,..===1*....•.;:r..=••==•-.-• -'..--"7-S=--;..7..7"="%=;.":11-S7==.......t:•.S.....7..6.r-f=.. ...=._.171.7,;, . !...,..•.........1 c•••••••••••••4••••• / 1••• / . p, /401pri r".-----"I: ..yjr//1.;r.V:.:rf-- 35..r_z_-•_ :-"-_==-' "= - -rICKf-E-Trr...z._.......7.7.7...........74?.....„........r.j....3. :::::*..."...=...!..7...',. ••;";•'W-1 7 I.I 4 I I Pri 1 I I 0 I I V . .-`t•-• --- / ••-• ---- • ‘,... .......•---- • Worm..••••• • ...„.....-- •,,,fo,g ,.c. - /I.d''''..Vfi.. ....• ••• • .., iir- - ---•r .h_....... • , E N E+I I I I I I ei F.4 1 000. 44 0 0.. 4 II kilo '::... ilit 11111111111.-# leill ...:>-...4r .-414P 711P.,-;#'40+440$111P.,..rilillialoPPIWIJ .. .• \.. 111W''Albt4jr. pi, mil •iwp-Air 4.1.:40,.. .„. P ' qiii.M.40.,41._ 0.:OVEG• ,14 II GRO".4 0 a ili i 41 I I 04000.44 I I 1 I I.II II*. . .......... ili 4010111°.411111 .4*. '''ATION 4 01111W1,00,--44Wil* 4.# .44111". 4°44 440 *411\A 40.. :'I'. .401014111 .0.414*,44. littietfr p.'41tt40/ 3 ;:,..,:,3,...0.7•rt....".t.:::::tt‘\\\•\‘ - ' "le!. •"....-' /! -'!. • ..•• " .... .•:".r \4, \\*,‘•tt , I-, ".,t: 1 IAN.t.?, ‘ ./..' ..••1•:" •C:--"3. ../ // . .144. i . .. C) ...% i\\ . .\ '.:.----.'<---'. ...•--..r------Vi^. -:'//, / % -.... \\Nr-..-----:-. % ....... i....--.4•c. . 1117/*// 411111 ...;,....•• # ....:::... .. 41161111.1......> ' . . . % \, . • . • t ..---- • •• '.7"r•."-> ...." .• •••"*".....• •••:„...•••• ,.. et„..••• ............-- • ,../ .1•.:"• - , , , - / \ .•''''''':::•••.:-..... .; .•'•--::•--;,.., • ",....k t, \\N\ ?:. /'. .;,...3'-''j,.•;• ( •-•••..-7%':•-•2/..--•' •':-.;••' ' 1 ri4-.^; .• tot?..•... Vt\\\t\ • / ,. .•••• j•t,•'• / 1,"---. .. I -..-.7...-:-------..>*:"--- 41010 0 114,11*,...."-.". • '14 . C. Vi7:3 \A%\\\ -. / ..,t .•••• I * .... \ %.\\ .... / , % ., ,•• _I.-, -.._.\ .. ...../.„.....:,:.• : • ... „:„....::.:;/•" ..., .(r) .;.. .",,.. N\‘ ‘....._:-----••-''____.. . /" ,. '6" •••• ....----- • ••• :.;;;"-..--;7:."‘. ' . 1 :4"4 .• • 1) / 0 % i \ ..•,..•., 1 INCH APPROXIMATELY 45 FEET ..-1, 0...\ : / i .,,,,..••• ,,.... , C'D \ ei.-- \ -''- ••' . .. ,. . s, pot:Cc' • 4ALWittj/ i, LP ,,,: .. / 0 "". "•••'• • . ,„••: :'• C C 01 ':'• s't. N "' i ! .•. CrCC• ... ... // 1 •• -N- - . i ..t••...,. / ..vi ••,-- ..... ... ...:-. j"..- I . ---< ••... -- . -- • 0 -- "•tr.--- ••••• • • . DJ • • 0 • . ,-- •--- , .........._-_ C.f) Cil ---4 Figure 4. Site plan showing the topography and boring/monitoring well locations at the Shadwell "76" Station, Shadwell, rn VA. cn. • A 1 . • COUNTY OF ALBEMARLE 0t A/..% tt([� a. --' �•''....'•.C' O ECEIVEU • 0- i MEMORANDUM A f �%�� s�� .sr Y •1 u:: 1 i 1.1 L�. e .. fit : ���` �^fl• 3• '••} ,R\.• '•i TO: Wayne Cilimberg -9Oirector of Plan : & Community Development • FROM: Jack M. Kelsey, PE - Civil Engineer': DATE: February 24, 1993 RE: Jurisdictional Area Request - Tax Map 79 Parcel 19 As requested this Department has reviewed the analysis of the drinking water sampled from the above referenced private well and the technical grounds for support of an extension to the ACSA jurisdictional area. Sampling and testing of this well indicated unacceptable coliform bacteria levels. According to the Thomas Jefferson Health Department this type of contamination is very common (especially in older wells) and is a problem they deal with on a daily basis. Very rarely is the groundwater the source of this type of contamination. Bacteria contamination is generally due to intrusion of surface runoff into the well as a result of poor installation or (in the case of old wells) the standards utilized at that time. The Health Department utilizes a four step procedure for recommending a resolution to these problems. The first recommendation is to protect the wellhead from the intrusion of surface runoff, chlorinate and flush the well to remove the bacteria from the stored water as well as the liner and appurtences, and then test the water. Should these measures fail to correct the contamination, the second recommendation is to install a new well in accordance with present standards. If bacteria contamination continues to persist, installation of a chlorination system • is then recommended. Lastly, for the rare case when all options fail, the Health Department will recommend the owner apply for extension of the ACSA jurisdictional area. As a policy the County has discouraged extension of ACSA jurisdictional areas in other than County designated growth areas, unless public health and safety is endangered. This site is not located within a County designated growth area. • Wayne Cilimberg February 24, 1993 ; , Page 2 Ax: The scope of the sampling and testing of this well was limited to the determination of the water quality in the present condition of the well and are not conclusive evidence that the well is a danger to public health and safety. Extension of the ACSA jurisdictional area is not adequately justified until disinfection, remedial measures to eliminate the source of the contamination, and/or the other options described above are attempted and failed. Therefore, at this time the Engineering Department cannot support this request. JMK/ CC: Jo Higgins - Director of Engineering `; RECEIVED • NOV 2 5 1992 �` Planning Dept. COMMONWEALTH of VIRGINIA STATE WATER CONTROL BOARD • Richard N.Burton • 2111 Hamilton Street • Executive Director • Post Office Box 11143 ^' Richmond.Virginia 21230 1 143 Please reply to: Valley ReglonaIOltice (110A)367.0056 116 North Main Street • P.O.Bii.768 Bridgewater,Virginia 22812 (703)828-2t.95 August 14, 1989 Mr. Sherwood Exum 924 'Harris Street Charlottesville, Virginia 22901 Re: Shadwell GOCO "76" - Albemarle County, PC 89-1392 Dear Mr. Exum: This is in regard to the report of the taste and odor of petroleum in the domestic well water supply at the referenced site. On April 28 , 1989 Mr. John Paul Jones, Albemarle Fire Inspector, reported petroleum contamination at the referenced site. On June 29 , 1989 Mr. Larry Carpenter of this office obtained water samples for analysis from the well which serves this site. Analytical results from these samples (copy attached) indicate substantial petroleum contamination is affecting ground water at this site. Due to the presence of this contamination, Valley Regional staff believe that a site, risk and remediation assessment is necessary to protect human safety and the environment. Therefore, I must request GOCO Oil Company to submit a site, risk and remediation assessment by September 29 , 1989 . To be considered complete, these assessments must address the following elements. • • August 14 , 1989 -2- Mr. Sherwood Exum SITE ASSESSMENT A. : Include data on the physical/chemical= properties of the . contaminant B. Nature and quantity of release C. Site characterization [soils, aquifer, strata] 1) Geologic 2) Hydrologic D. Land/water usage, potential usage [population distribution, potential receptors] E. Contamination characterization - Vertical and lateral extent for each phase [if applicable] 1) Vapor phase 2) Dissolved phase 3) Free product phase I , • RISK ASSESSMENT A. Potential migration B. Migration routes 1) Man-made 2) Natural C. Potential and impacted receptors [Human and Non-Human] D. Potential/level further environmental damage REMEDIATION ASSESSMENT A. Potential for remediation [feasibility] B. Degree_ of remediation/end point C. Applicable technologies D. Projected duration • �•";la st 14, 1989 -3- Mr. Sherwood Exum Thank you for your continuing cooperation. any questions, do not Should you t your _ - - . .. .c . ,�r; hesitate to:contact me. .r: 2t r • • Sincerely, • 141-497. )- cyw\v„. . 0) , zi\o"...r__, ames D. Green ' Regional UST Geologist gist cc: Mac Sterrett/VRO File PReP Central Mr. John P. Jones 401 McIntire Rd. Charlottesville, VA 22901-4596 ATTACHMENT D RECEIVED JAN L 6 COMMONWEALTH of VIRQINI Dia njnc Dept. DEPARTMENT OF ENVIRONMENTAL QUALITY Valley Regional Office James S.Gilmore,III Governor Street address: 4411 Early Road, Harrisonburg, Virginia 22801 Dennis H.Treacy for Mailing address P.O. Box 1129, Harrisonburg, VA 22801-1129 Director John Paul Woodley,Jr. Telephone (540) 574-7800 Fax (540) 574-7878 Secretary of Natural Resources http•//www deq state.va.us R.Bradley Chewning,P.E. Valley Regional Director January 24, 1999 • Mr. David Benish Chief of Community Development Albemarle County Planning Department 401 McIntire Road Charlottesville, VA 22902 Re: GOCO Bulk Facility, Routes 250 & 729, Shadwell DEQ Tracking Number: PC 89-1392 Dear Mr. Benish: Per our telephone conversation on January 7, 1999, I have prepared a summary of Department of Environmental Quality (DEQ) records pertaining to the petroleum contamination at the above site: On April 28, 1989, Mr. J. P. Jones of the Albemarle County Fire Department reported that No. 2 fuel oil was leaking from a loading rack valve at the GOCO facility. The valve problem was corrected, but soon after, the State Water Control Board (SWCB), now DEQ, received a report that the potable well water serving the facility had the taste and odor of petroleum. The SWCB sampled the well and determined that the groundwater at the facility was contaminated with components of gasoline. Accordingly, the SWCB requested that GOCO submit a site, risk, and remediation assessment to address the contamination. On June 22, 1990, the SWCB received GOCO's report, prepared by Jeffrey A. Sitler of Hydrosystems, Inc. Five groundwater monitoring wells were installed at the site to determine groundwater characteristics and contaminant levels. Groundwater flow was measured to be to the west-northwest toward the western corner of the site near the intersection of the C&O railroad and Route 250 (see Figure 5). Given the extreme geologic heterogeneity, groundwater velocities at the site were estimated to range between 20-550 ft/yr. Significant dissolved-phase contamination was encountered only in the wells in the vicinity of the loading rack (MW-1, MW-2, and the potable well). These wells had significant concentrations of BTEX compounds--benzene, toluene, ethylbenzene, and xylenes--indicative of gasoline. The downgradient monitoring wells (MW-4 and MW-5) and the Mr. David Benish January 24, 1999 Page 2 intermittent stream located along the northern boundary of the property did not have detectable BTEX levels. No free-phase petroleum was encountered in any of the monitoring wells. According to the report, the GOCO site has been utilized as a commercial gas station and bulk distribution center since approximately 1940, and the observed groundwater contamination was attributed to repeated leaks, spills, and overfills at the loading rack. The lack of contamination in the stream and downgradient monitoring wells indicated that the contaminant plume was stable and was not migrating from the site. GOCO declined assistance from the DEQ's alternate water supply program to address the contaminated potable well, and since no additional investigation was warranted, DEQ closed the case on August 2, 1994. On July 21, 1998, Mr. and Mrs. Jacques Logarides visited DEQ and reported that the potable wells serving the GOCO facility and the Shadwell 7-Day Junior convenience store at the intersection of Routes 22 and 250 were contaminated with petroleum. Mr. and Mrs. Logarides were concerned because they were planning to purchase the parcel of property between the two sites, and they did not want to have a contaminated drinking water supply. In response to the report, I visited both sites July 23, 1998, to collect water samples. At GOCO facility, I discovered that a new potable well had been drilled in the early 1990's. The sample results indicated that the well serving the 7-Day Junior store was free of contamination, but the new well serving the GOCO facility contained MTBE, a gasoline additive. Tests for MTBE had not been run at the GOCO facility prior the July sampling event, and in all likelihood, MTBE has been present at the site since the original pollution report was received in 1989. Because MTBE may serve as an indicator of more toxic and/or carcinogenic gasoline constituents, DEQ required GOCO to inquire about connecting to the Albemarle County Service Authority water line running along Route 250. DEQ considers this to be the most cost-effective solution to address the contaminated water supply issue at the GOCO facility. If you have additional questions about the content of this letter, please contact me at 540-574-7846. Sincerely, Ronald D. Phillips Senior Hydrogeologist Enclosures cc: Mr. Harry Montague (GOCO) R. M. Sterrett (DEQ-VRO) UST File • mer O . .1\ `\\- ,_,,.‘_,.: .\-:::-..1)1 1 i ;\'T-9f.- , '•\-:TIP-412)1 .;...\:,.....7. ,,,p/ i. ,),,p),., .,..„1--7, - f,,,...: . r.:-..--.*)-. .. • ... G— /'I' / / of / I)I) \►�;/. \ J • ' ‘ --4:rk‘l) .-\\ 's.?. .\. ... ° i.)) t((.----1' -7( - • ..1 -..-Z-I‘-‘j\A ' \ .. ,s4.jr_-._,r, A,. .,., . .. 8,1 '1/4, ' ' . ',.. °2 A_ ..‘ - -.\---- ---I, . •• "t, \--\--' ) . .t*--\1- - \-7` .'",k. i\ i`, • i••. l 1•.I. —•"i'�\ ��i'- i " ) •_ J �1 �. ail /.! 'ai . 1 '• to , 1. / • • • j\lii.1- ) \.1.. 0,./r '.. \ '.\'' 1 l\ 1 /7 a ;° , , " � 4 /.(a'•b\ aa JI ' M//. %' + cio.)\,60,,,,,, :---i\, I1A /f1.� / . a ,/ w0 'IP (4 • " l a \. t•°;�rCfinds .' . 4i , � 1%', l�11\ aa• ` w -1*If• a. i i •v a •yl _-. /�C C f1 I � ' \*.. 4f ‘ta s4 r.* `/•.a,1'" . _ , • 1 ,"• / 1 ').) :.\,-\'\\, .. 1 --..:\s..1.; .,,,-- k --::\...-"1---) r.,./;:::::-:".2-1; ) . ( * ";;**4:‘, -. ..'"11'17; In s 440 P",,,1 t\. /1* , '' • ...) .. \„ .._. iln 24 ')!NA.. T.J.', ycJt 1 c H, `-) +� I _. —,_� o:r,p q >, ..♦ ITE LO TION' ./• p i - I♦ ,'.A}. pH10'' ", �i had /in \ (/ /7.- nan'1t�I�t ..* //-•• • - :`'-`_7.----7,- ,.., 4 ton. n/ f� r THR� O. II 447 I/ ...., -,.-'-'..--130.-51.1%-j_liVy i" .... r '. ) `\ ' ;."7. ic_ ,N../,;))/ ,.4.a 1,-(----/ \ ..T.....„,,,,. 1,, • ."7-\\./ii-r,----- \\ ,, ' . (., \ , .....,. ., . . , A t V,,,-/.',11 ' •- _ -- • . '. 11101.k L . - . i• \sie74,, ,.. DTI') /„....Tr ..„, . t.'\_,..,4„..!,.‘. •, -..c. . •t• :z...:::. - ''‘‘,, .,, ,. ‘, 1 \ i • i , ( ' ' w ` ' • °'•Milton\\\ 1\ ', +` \ \1 ._ 1, , ( 1 �• :�`©� \ -.�> .. "�., \ I� ,,i 1; _ emu. ,�s y /> • '' , 1,..1---y 1\��.+�`C,, Gb '•i `,•.` �•♦ '\ �J \/ /- ,� u�� v � J73 s'a+vim ,fir I ! 7 I`IP '.l / j •n, i .�''. SCALE; • 1 INCH APPROXIMATELY 2000 FEET • Figure 1. Topographic Map (U.S.G.S. Charlottesville East, VA 7.5-Minute Quadrangle) showing the location of the Shadwell "76" Station Virginia. 4 HYDROSYSTEMS INC____ 'T , Vi0-2)\- i/\'i ___:_j ,A .4 60--kel I4r/ : 1 rbC) ( : 1\0 \ .„.1. ... ..,... )11x, /• b- \-----44°1 6,`‘ --I • I \\t I � � \ O //j/� '�111\ 3�5j� 1"-----_} --....___S c //0 ' y .c,-";*.' -'.7 tr2 „ , ,*_-;v1....7. „a „) ).-Ak..: - -- ---7-,,,:/ i,-,--,.-2, z --c-,__:,_,_...,- . ... ., / - - ....,.____---_, . _ -.'..."---k ' ...- 1 1 i(3; ii 1 II ,� .f f w-, I \ - .` - \ �11 ) 1 400 _ 11 1 C-='---';-. - -.-.- ... I \ : �r ffir - I � `f- // / _.. . dN-----.,..______,J ' '..... . •':'• . _..‹---2/-1 Z.-N.—Z.- -ic\lC;-..V.-- .,a Ayr,- 0 1; Ekti't�• i i I -1C %�/ 1,/' \ / �•® -SITE�> //-i�-�. _\- _,,,,_< .. _- ,_ ;l -;� Shadwell`' �:, ft71onñ \ os ‘„,. _ ____. . ,3-7. -',/ , 0 --f/ '_ ... .00 1/, 7:__ --,:-.1 \ . _..r t.7-4--- ---- 0 ° .. o I � , _ \� *-- SC,, ? gyp. z � , r ......... , ,., , I 1 -,, 'l,r • 4 8 ii /------ :_ COMMERICAL AND RESID''• ' \ �, ENTIAL PROPERTIES SERVED BY INDIVIDUAL WATER SUPPLY_WELLS /l \\\ ''‘, c1) \... .. , _:.,CA114) \\N-Nz------...,.------- ( --.4/1 \-\7":;,---:)... yi ' . j -------1-7 • .,:‘: ) .ram 11 I } t \ , l i i i _ • • ,..iii.p n"'"-Z(,-: ' ' ---1\ .\.\'.‘. ‘‘ \ • lok ,\.\ ,, ,• { ,c(--- ii- ...... II \\ • •----...>.o, _11,. 348 ♦ \ ).2 9 1 , / /iyi . ✓ / m u - . _ Milton 1It1, / ys ... , '�_ �\ • .. , \ �. SCALE: �\ \•` \ ( (1 INCH APPROXIMATELY 1000 FEET' • i ' � Figure 2. Location of commercial and residential wells in the vicinity of the Shadwell "76" Station, Shadwell, VA. 5 HYDROSYSTEMS NC • - .a. •.1.... Ol....all rim... rMO Mall IMOI NM. NNW ME. it NMI awry I, MIMI • • i i. .. , ...:C. :O RAILROAD _ j i. ... _ ... . _i i- } ( 4-- ---I— --:.._i- -j ;--. . ;._..4 r Y i i.....1 i- % ...1.... ! - 1. . _t.. .i._...i -• .. •1-.....1_...t_..._,... i-..... i.....:......•... ... •. j. .. : _• . 4:, ,. .�. .f...4.1..11 1......a* /tit _-=__________3_- _ ___ __==_-_=______ : • ' / - - 4 w � ---—-- _� =EMBANKM ENT=_—_ • ts.q \ 1 .._.... _ .... ._I // /r'7 / r_ i//�� ..P 'id�a��— ivpv..i... • .�_'��,,. el .%• + • 2. I \\� yt'' t� rr�/��/ /�j/j,i; '\�C��__ --—_— - ---"�,f• " it r MW S \� �' • j// r//i i ! — fxosaNE UST /�'ti S • KEROSENE PUMP/� \ ---. . it �� � - ! i \\ \"III II I I I� //` \ • ;/I, 1 I' '�1 • ABOVEGROUND G ND TAT+ -*MW-3 ,/ . ¢STORE WELL �� / ; STATIONA. ILiLL13 ♦ �<, j,,. . .r•• • i i r _-- • �� . I. .� ..�+.. • y}___--\\eAS t UMPS x,,� APPROXIMATE DIRECTION OF GROUNDWATER FLOW /,•' „,•�i� �# 'ice \\\\\\\ .=r' —U /�I �. ii��/ !��I ...i .3, Al i •;; \\\\\\\\\\\,%A, -"==-- ��•' ` --- //ram %%„j�;, �,I •-Q\: MAY-2� .• �.f�j i %�ti't.. c �\ t--- _ / �!• I UNLOADING RACK. • �;�'.- <r \`\�\\\\1\•,i -_— / / /i ice' I i'•' / .�� ��>�j /�/•�1, Air • :� tio5 \. \\ �__ ;: ////:QDIESEL PUMPS ,� 1...• �i i i�i.• '" / �' n \\\\\\\\\ ,. /% Imo' - :-'' `•� __� 4-7 •`f j. rjo,_ _V.- // f j i i�/ is; „y" /. •• \\\ --r ��ii/ .t- l ,.• •' •tic' G I t. • \\\\\.w. '`��/_//+' ,�� %_�%EMBA_NKMENT j O '•\ a �\\\-----��� /' ,'+.... ''" % SCALE G s l ,;' I INCH APPROXIMATELY 4S FEET '. • �) N • \\\\\........... �I• MW 4 i/,/may/ "� a" am GROUNDWAT...._MONITORINGER corrrOUR % �/ NEW P° oren i / i • ao ] . +_ O •.•rt� j- -- ' Figure 5. Groundwater flow direction at the Shadwell "76" Station, Shadwell, VA. 2 I