- Commonwealth of Massachusetts ~~~i Executfve Office of Environmental Affairs I Department of . Environmental Protection William F. weld _.EOEATrudy- Cox. 1lIom•• B.~. ActIng CommI8alon« FINAL SITE INSPECTION PRIORITIZATION REPORT FOR WEYMOUTH NECK LANDFILL WEYMOUTH, MA CERCLIS No. MAD985277870 Prepared by: Mary Yaeger Massachusetts Department of Environmental Protection April 29, 1994 One Winter Street • _no Ma... chu_ 02108 • FAX (817) 558-1049 • Telephone (817) 292-5800 Final Site Inspection Prioritization Report April 29, 1994 Weymouth Neck Landfill MAD985277870 Weymouth, Massachusetts TABLE OF CONTENTS Page INTRODUCTION .................................................. 1. SITE DESCRIPTION ............................ ; ... , . • . 1 REGULATORY mSTORY ........................................... 4 OPERATIONAL mSTORY AND WASTE CHARACTERISTICS ................ 7 GROUNDWATER PATHWAY ....................................... 11 SURFACE WATER PATHWAY ...................................... 16 SOIL EXPOSURE PATHWAy ........................................ 23 AIR PATHWAY .................................................. 33 SUMMARy ..................................................... 35 REFERENCES ................................................... 30 LIST OF FIGURES Figure No. 1 Location Map ............................................. 2 2 Site Sketch ............................................... 3 3 Four-mile Radius Map ...................................... 12 4 Location of Test Pits and Groundwater Monitoring Wells Installed by Goldberg-Zoino Associates .......................... 15 5 Location of Shellfish Area BH9 ............................... 18 6 Locations of sediment/shellfish samples collected by MADEP in 1990 .... 20 7 Location of Certified Engineering & Testing Company Soil Borings ...... 26 ii • Final Site Inspection Prioritization Report April 29, 1994 Weymouth Neck Landfill MAD985277870 Weymouth, Massachusetts LIST OF FIGURES (continued) 8 Location of Web Engineering Soil Samples ....................... 29 9 Location of Town of Weymouth DPW Excavation .................. 32 LIST OF TABLES Table No. 1 Hazardous Waste Quantity For Weymouth Neck Landfill .............. 10 2 Public Groundwater Supply Sources Within Four Miles. of Weymouth Neck Landfill .................................. 13 3 Estimated Drinking Water Populations Served by Groundwater Sources Within Four Miles of Weymouth Neck Landfill .............. 14 4 Sample Summary: Weymouth Neck Landfill Groundwater Samples Collected by Goldberg-Zoino Associates August 1984 ............................................. 16 5 Water Bodies Within the Surface Water Segment of Weymouth Neck Landfill .................................. 17 6 Sample Summary: Weymouth Neck Landfill 1980 Shellfish Sampling unknown collector . .. 19 7 Sediment and Shellfish Sample Locations Samples collected by MADEP in 1990 ........................... 21 8 Sample Summary: Weymouth Neck Landfill 1990 Sediment Sampling Summary Samples Collected by MADEP ................................ 21 9 Sample Summary: Weymouth Neck Landfill 1990 Shellfish Sampling Summary Samples Collected by MADEP ................................ 22 10 Sample Summary: Weymouth Neck Landfill Soil Samples Collected by GZA August 28, 1984 .......................................... 24 iii • • Final Site Inspection Prioritization Report April 29, 1994 Weymouth Neck Landfill MAD985277870 Weymouth, Massachusetts LIST OF TABLES (continued) 11 Sample Summary: Weymouth Neck Landfill 1988 GZA Test Pit Data Summary : ............................ 24 12 Sample Summary: Weymouth Neck Landfill Certified Engineering and Testing Data Summary of Soil Borings ................................ 27 13 Sample Summary: Weymouth Neck Landfill Web Engineering Associates Surface Soil Samples Collected September 13, 1990 ................................. 28 14 Sample Summary: Weymouth Neck Landfill Town of Weymouth DPW Excavation Surface Soil Samples Analyzed by Toxicon ....................... 30 15 Sample Summary: Weymouth Neck Landfill Town of Weymouth DPW Excavation American Analytical Laboratory ............................... 33 16 1980 Air Sampling Data Summary ............................. 34 17 Estimated Population Within Four Miles of Weymouth Neck Landfill ..... 34 iv • • Final Site Inspection Prioritization Report April 29, 1994 Weymouth Neck Landfill MAD985277870 Weymouth, Massachusetts INTRODUCTION The Massachusetts Department of Environmental Protection (MADEP), Bureau of Waste Site Cleanup, was requested by the Region I U.S. Environmental Protection Agency (EPA) Waste Management Division to perform a Site Inspection Prioritization of the Weymouth Neck Landfill site in Weymouth, Massachusetts. Tasks were conducted in accordance with the Site Inspection guidance provided by the EPA and performed under the Multi-Site Cooperative Agreement. Background information used in the generation of this report was obtained through file searches conducted at MADEP, telephone interviews with town officials, conversations with persons knowledgeable of the Weymouth Neck Landfill site and conversations with other federal, state, and local agencies. Additional information was collected during the on-site reconnaissance on January 5, 1994. This package follows the guidelines developed under the Comprehensive Environmental Response, Compensation and Liability Act of 1980 (CERCLA), as amended, commonly referred to as Superfund. However, these documents do not necessarily fulfill the requirements of other EPA regulations such as those under the Resource Conservation and Recovery Act (RCRA) or other Federal, State, or local regulations. Site Inspection Prioritizations are intended to provide a preliminary screening of sites to facilitate EPA's assignment of site priorities. They are limited efforts and are not intended to supersede more detailed investigations. SITE DESCRIPTION The Weymouth Neck Landfill property is located at 42°15'23.1" north latitude and 70°55'21.7" west longitude and consists of three lots of land (Lots 1,24 and 25) in Weymouth, Massachusetts [Ref.l,2,3](Figures 1 and 2). The property is situated on a sand spit at the confluence of the Weymouth Fore and Back Rivers and occupies a total of approximately 27 acres. Lots 24 and 25 are located north of River Street and Lot 1 is south of River Street [Ref.3]. Fertilizer was manufactured on the property from approximately 1861 until 1966. Ownership changed in 1968, and the buildings were demolished [Ref.4]. The property is bounded to the north by Webb State Park and the Weymouth Fore River; to the east by the Weymouth Back River; to south by the Weymouthport Condominium Complex and the Weymouth Back River; and to the west by private residences. No structures were observed on Lots 24 and 25. However, Mr. Iantosca (the owner) stated that without snow cover, old foundations from the Weymouthport Condominium models could be seen. 1 MA DEP of Waste tite Cleanup Preliminary Assessment Map 1 , 1/2, & 1/4 Mile Radii SITE NAME: ml!!i ..... ,. TI.I, AIII.II.u ".,u 115111 em IU,. '1,'111 A.,n.,. "1II·lulln Weymouth Neck 01. A"r.,,'" z••• I.. .... lel'.. 1 ••••• ulu ••If.III1, 1.1.,1.- •• mlulll .,.I.ell,. Ar ... Z..... 1 C.. .,IIIII.I •• MAD985277870 "N h ..., , ...... linn ..III SI,. ••• N USGS 0 .......4.,1 .. N,.I,,,.... " •• III ••lu W,II,.cI. I;;:; 10hulli. 111.111.". 341375,4679660 hit ... u'" N H,.ft" ... I ••". IINU' fllla .... H.IIIIIIII .t lu. W,tlu(h # Studll} ...... ./ WII.III. , h'.rU, K.llliutl un ltu., ,.1II.ul ull "Inl. ,,.I.cl,d 0,.. S"ce t.A\ C••••• It, ","Ie W.I., h"U... C,o ..lIIw,hr .,....... '11 rll:!Uf.E 1- Au. ,I CrlllCiI 1I1'1r .....1.1 Coutr. ("CEC, * * C••••• U, ,."Ie W.I., h"nll . So,flu W.t., V hlllll ftcilltl ... "" 1971 0C'________ -L ____ -., __ -i~ f_~ IaJ .u.o ,. IUU .. C,rllfld Yer.,1 ,..11. un (, Il00 ....... r::::I If" Dul ...,,, Sel. S.. ru "111111", SCALE 1 :20,000 October 28, 1993 ., :~ it ,1.) ~"-,,, I <i" I _0.."- / <cO' "...,'/ .~x---~ O~ - ,:... ~ ,/ WEBB ST~TE P~RK , ~"'V ~/ I . .. ', '::., /' .' .;~:: :.~;o.-"::::"-,J";'~ ~ ( . .' ~ 1 '. 1,-\ ~ 1.,'9 '~ ~ f 'y.D"\C:J ~ ",eel - - ....~ .... ~.;.v- \ c;r~CA-i~~::~ x ~~./-/_< t n::::::l 1I - ~ SLDG.~ 1_ BLDG.S •:.. '. t;AS'- SRi A=I ~ '\ :~~!.:.::;:<::- _1Ne'f MOIYfH.P~ '. \... _.5=? BAOA.O REAC; -:- ~ --.,.l... :'~~.i-::--=---::;:::;;~~~?:f. 7'-;-.~ - )- .c::J- i bOAeo \=t;~ ~.:..: ... __ :> . '* ...... / 0\ WEYMOUTHPORT CONDOMINUMS ~~ ~ v~ . {-~ / § ,;­~o ~ • )( ~ ~)C Cl-l~" Ul'\1( rEn.eE SITE PLAN OVERLAY WITH r.~ueE 2 H. W. MOORE ASSOCIATES, INC. DATED: 4-18-89 REMEDIAL ACTION PLAN AREAS (T~KEN FROM SITE Pl .... N 6-16-87 Consulting Engineers 112 Shawmut Avenue ~S REVISED THRU 5·3·881 SCALE: 1"=200' 80STON, MASSACHUSETTS 02118 • • Final Site Inspection Prioritization Report April 29, 1994 Weymouth Neck Landfill MAD985277870 Weymouth, Massachusetts East Bay at Weymouthport Condominiums are located in the central portion of Lot I (Buildings A & B on Figure 2). Each building is six stories high and contains 72 residential units. Under each building is a parking garage open on the east and west ends for ventilation. Behind each condo building are two carport bUildings. Access to Lot 1 is controlled by a manned guard house located southwest of Building A. This guard house serves to control access to both the Weymouthport Condominium and East Bay at Weymouthport Condominium complexes. Sections I, III, IV, V, and VI on Figure 2 are fenced in with chain link fencing. However, access to these sections of the property