### Commonwealth of Massachusetts Executive Office of Energy & 

### Environmental Affairs 

# Department of Environmental Protection One Winter Street Boston, MA 021 OS • 

### 617-282-5500

DEVALL PATRICK Governor RICHARD K. SULLIVAN JR. Secretary
KENNETH L. KIMMELL Commissioner

February 19, 2014

David Webster, Chief Water Permits Branch Office of Ecosystem Protection USEPA- Region 1 5 Post Office Square, Suite 100 Boston, MA 02109-3912 Re: Water Quality Certification NPDES Multi-Sector General Permit Dear Mr. Webster: Your office has requested the Massachusetts Department of Environmental Protection issue awater quality certification pursuantto Section 401(a) ofthe Federal Clean Water Act ("the Act") and 40 CFR 124.53 forthe above referenced NPDES general permit The Department has reviewed the proposed general permit and has determined thatthe conditions ofthe general permitwill achieve compliance with sections 208(e), 301,302,303,306, and 307 ofthe Federal Act, and with the provisions ofthe Massachusetts Clean Waters Act, M.G.L c.21, ss. 26-53, and regulations promulgated there under. The general permitconditions and the requirements prescribed by this certification [listed below] are sufficient to comply with the antidegradation provisions ofthe Massachusetts Surface Water Quality Standards [314 CMR 4.04] and the policy [October 6, 1993] implementingthose provisions. MassDEP reserves its right to modifythis certification ifchanges are made tothe said draft permit

_Additional conditions required by the Commonwealth of Massachusetts included: 

### 1. Discharges covered bythe general permit mustcomply with the provisions of314 CMR 3.00; 314 CMR 4.00; 314 CMR 9.00; and 310 CMR 10.00 and any other related policies adopted underthe authority ofthe Massachusetts Clean Waters Act, MGL c.21, ss. 26-53 and Wetlands Protection Act, MGL s. 40. Newfacilities or redevelopment ofexisting facilities subject to this permit must complywith applicable storm water performance standards prescribed by state regulation or policy. A permit under314 CMR 3.04 is not required for existing facilities which meet state storm This information is available in alternate format Call Michelle Waters-Ekanem, Diversity Director, at 617-292-5751. TDD# 1-866-539-7622 or 1-617-574-6868 MassDEP Website: www.mass.gov/dep Printed on Recycled Paperwater performance standards. An application for a permit under 314 CMR 3.00 is required onlywhen required under 314 CMR 3.04(2)(b) {designation ofadischarge on a case-by-case basis} or is otherwise identified in 314 CMR 3.00 orany Department policy as a discharge requiring a permit application. Department regulations and policies may be obtained through the State House Bookstore oronline at www.mass.gov/dep. 2. The Department may request acopy ofthe Storm Water Pollution Prevention Plan (SWPPP) and the permittee is required to submit theSWPPP to the Department within 14 days of such a request. The Department may conduct an inspection 

### bfanyfacility covered by this permitto ensure compliance with state law requirements, including state waterquality standards. The Department may enforce its certification conditions. 3. The results ofany monitoring [four samples required in the first year ofthe permit] required by this permit must be sent to the appropriate Regional Office ofthe Department [attention: Bureau ofWaste Prevention] where the monitoring identifiesviolations ofany effluent limits or benchmarks for any parameterforwhich monitoring is required underthis permit. In addition, any follow-up monitoring and adescription ofthe corrective actions required and undertaken to meetthe effluent limitsor benchmarks must be sent tothe appropriate Department Regional Office. 4. The Massachusetts Coastal Zone Management Program submitted thefollowing conditions to be added to the permit in orderto meets the Programs' Consistency Review and which are included in the requirements ofthis WaterQuality Certification: );> In Sector Q [WaterTransportation] add copper to the required monitoring parameters with a benchmark monitoring concentration as included in the MSGP 2013 Fact Sheet Part X.B.l.a, Table 1, and AppendixJ. );> In Sector R[Ship and Boat Building and Repair Yards] add aluminum, iron, lead and copperto the list of required monitoring parameters with a benchmark monitoring concentration as included in the MSGP 2013 FactSheet Part X.B.l.a, Table 1, and AppendixJ. );> Modifythe monitoring requirements [section 6.2.1.2] for Sectors Qand Rsuch that all four ofthe quarterly monitoringsamples must meet the benchmarks ratherthan the average ofthe four before no further monitoring is required. The Department hereby certifies the referenced general permit including the conditions listed above bythis Department. Sincerely,

David R. Ferris, Director Bureau of Resource Protection Wastewater Management Program

cc: Todd Callaghan, MACZM Kathleen Keohane