diff --git a/mainnet/2024-03-07-ecotome-sysconfig-updates/.env b/mainnet/2024-03-07-ecotome-sysconfig-updates/.env
new file mode 100644
index 00000000..e69de29b
diff --git a/mainnet/2024-03-07-ecotome-sysconfig-updates/Makefile b/mainnet/2024-03-07-ecotome-sysconfig-updates/Makefile
new file mode 100644
index 00000000..aff5bb0c
--- /dev/null
+++ b/mainnet/2024-03-07-ecotome-sysconfig-updates/Makefile
@@ -0,0 +1,55 @@
+include ../../Makefile
+include ../.env
+include .env
+
+ifndef LEDGER_ACCOUNT
+override LEDGER_ACCOUNT = 0
+endif
+
+##
+# Incident response commands
+# Note that --ledger --hd-paths <PATH> can be replaced with --private-key $(PRIVATE_KEY)
+# in any command when using a local key.
+##
+
+# Delete L2 Outputs Commands
+
+.PHONY: delete-outputs-sign
+delete-outputs-sign: deps
+	$(GOPATH)/bin/eip712sign --ledger --hd-paths "m/44'/60'/$(LEDGER_ACCOUNT)'/0/0" -- \
+	forge script --rpc-url $(L1_RPC_URL) DeleteL2Outputs --sig "sign()"
+
+.PHONY: delete-outputs-run
+delete-outputs-run: deps
+	forge script --rpc-url $(L1_RPC_URL) \
+	DeleteL2Outputs --sig "run(bytes)" $(SIGNATURES) \
+	--ledger --hd-paths "m/44'/60'/$(LEDGER_ACCOUNT)'/0/0" \
+	--broadcast
+
+# Pause OptimismPortal Commands
+
+.PHONY: pause-portal-sign
+pause-portal-sign: deps
+	$(GOPATH)/bin/eip712sign --ledger --hd-paths "m/44'/60'/$(LEDGER_ACCOUNT)'/0/0" -- \
+	forge script --rpc-url $(L1_RPC_URL) PausePortal --sig "sign()"
+
+.PHONY: pause-portal-run
+pause-portal-run: deps
+	forge script --rpc-url $(L1_RPC_URL) \
+	PausePortal --sig "run(bytes)" $(SIGNATURES) \
+	--ledger --hd-paths "m/44'/60'/$(LEDGER_ACCOUNT)'/0/0" \
+	--broadcast
+
+# Unpause OptimismPortal Commands
+
+.PHONY: unpause-portal-sign
+unpause-portal-sign: deps
+	$(GOPATH)/bin/eip712sign --ledger --hd-paths "m/44'/60'/$(LEDGER_ACCOUNT)'/0/0" -- \
+	forge script --rpc-url $(L1_RPC_URL) UnpausePortal --sig "sign()"
+
+.PHONY: unpause-portal-run
+unpause-portal-run: deps
+	forge script --rpc-url $(L1_RPC_URL) \
+	UnpausePortal --sig "run(bytes)" $(SIGNATURES) \
+	--ledger --hd-paths "m/44'/60'/$(LEDGER_ACCOUNT)'/0/0" \
+	--broadcast
\ No newline at end of file
diff --git a/mainnet/2024-03-07-ecotome-sysconfig-updates/foundry.toml b/mainnet/2024-03-07-ecotome-sysconfig-updates/foundry.toml
new file mode 100644
index 00000000..0be0575a
--- /dev/null
+++ b/mainnet/2024-03-07-ecotome-sysconfig-updates/foundry.toml
@@ -0,0 +1,20 @@
+[profile.default]
+src = 'src'
+out = 'out'
+libs = ['lib']
+broadcast = 'records'
+fs_permissions = [ {access = "read-write", path = "./"} ]
+optimizer = true
+optimizer_runs = 999999
+solc_version = "0.8.15"
+via-ir = true
+remappings = [
+    '@eth-optimism-bedrock/=lib/optimism/packages/contracts-bedrock/',
+    '@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts',
+    '@openzeppelin/contracts-upgradeable/=lib/openzeppelin-contracts-upgradeable/contracts',
+    '@rari-capital/solmate/=lib/solmate/',
+    '@base-contracts/=lib/base-contracts',
+    'solady/=lib/solady/src/'
+]
+
+# See more config options https://github.com/foundry-rs/foundry/tree/master/config
\ No newline at end of file
diff --git a/mainnet/2024-03-07-ecotome-sysconfig-updates/script/DeleteL2Outputs.s.sol b/mainnet/2024-03-07-ecotome-sysconfig-updates/script/DeleteL2Outputs.s.sol
new file mode 100644
index 00000000..07d034f3
--- /dev/null
+++ b/mainnet/2024-03-07-ecotome-sysconfig-updates/script/DeleteL2Outputs.s.sol
@@ -0,0 +1,41 @@
+// SPDX-License-Identifier: MIT
+pragma solidity 0.8.15;
+
+import "@eth-optimism-bedrock/contracts/L1/L2OutputOracle.sol";
+import "@base-contracts/src/Challenger1of2.sol";
+import "@base-contracts/script/universal/MultisigBuilder.sol";
+
+contract DeleteL2Outputs is MultisigBuilder {
+    address constant internal L2_OUTPUT_ORACLE_PROXY = vm.envAddress("L2_OUTPUT_ORACLE_PROXY"); // TODO: define L2_OUTPUT_ORACLE_PROXY=xxx in the .env file
+    address constant internal CHALLENGER = vm.envAddress("CHALLENGER"); // TODO: define CHALLENGER=xxx in the .env file
+    address constant internal SAFE = vm.envAddress("SAFE"); // TODO: define SAFE=xxx in the .env file - ie the multisig which is signer on challenger>
+    uint256 constant internal L2_OUTPUT_INDEX = vm.envAddress("L2_OUTPUT_INDEX"); // TODO: define L2_OUTPUT_INDEX=xxx in the .env file - this is the index start deleting from (everything after will be deleted)
+
+    function _postCheck() internal override view {
+        L2OutputOracle l2OutputOracle = L2OutputOracle(L2_OUTPUT_ORACLE_PROXY);
+        require(l2OutputOracle.latestOutputIndex() < L2_OUTPUT_INDEX, "DeleteL2Outputs: L2OutputOracle did not get deleted");
+    }
+
+    function _buildCalls() internal override view returns (IMulticall3.Call3[] memory) {
+        IMulticall3.Call3[] memory calls = new IMulticall3.Call3[](1);
+
+        L2OutputOracle l2OutputOracle = L2OutputOracle(L2_OUTPUT_ORACLE_PROXY);
+        bytes memory deleteL2OutputData = abi.encodeCall(
+            L2OutputOracle.deleteL2Outputs, (L2_OUTPUT_INDEX)
+        );
+
+        calls[0] = IMulticall3.Call3({
+            target: CHALLENGER,
+            allowFailure: false,
+            callData: abi.encodeCall(
+                Challenger1of2.execute, (deleteL2OutputData)
+            )
+        });
+
+        return calls;
+    }
+
+    function _ownerSafe() internal override view returns (address) {
+        return SAFE;
+    }
+}
diff --git a/mainnet/2024-03-07-ecotome-sysconfig-updates/script/PausePortal.s.sol b/mainnet/2024-03-07-ecotome-sysconfig-updates/script/PausePortal.s.sol
new file mode 100644
index 00000000..cba5e253
--- /dev/null
+++ b/mainnet/2024-03-07-ecotome-sysconfig-updates/script/PausePortal.s.sol
@@ -0,0 +1,33 @@
+// SPDX-License-Identifier: MIT
+pragma solidity 0.8.15;
+
+import "@base-contracts/script/universal/MultisigBuilder.sol";
+import "@eth-optimism-bedrock/contracts/L1/OptimismPortal.sol";
+
+contract PausePortal is MultisigBuilder {
+    address constant internal OPTIMISM_PORTAL_PROXY = vm.envAddress("OPTIMISM_PORTAL_PROXY"); // TODO: define OPTIMISM_PORTAL_PROXY=xxx in the .env file
+    address constant internal GUARDIAN = vm.envAddress("GUARDIAN"); // TODO: define GUARDIAN=xxx in the .env file
+
+    function _postCheck() internal override view {
+        OptimismPortal optimismPortal = OptimismPortal(payable(OPTIMISM_PORTAL_PROXY));
+        require(optimismPortal.paused() == true, "PausePortal: Portal did not get paused");
+    }
+
+    function _buildCalls() internal override view returns (IMulticall3.Call3[] memory) {
+        IMulticall3.Call3[] memory calls = new IMulticall3.Call3[](1);
+
+        calls[0] = IMulticall3.Call3({
+            target: OPTIMISM_PORTAL_PROXY,
+            allowFailure: false,
+            callData: abi.encodeCall(
+                OptimismPortal.pause, ()
+            )
+        });
+
+        return calls;
+    }
+
+    function _ownerSafe() internal override view returns (address) {
+        return GUARDIAN;
+    }
+}
diff --git a/mainnet/2024-03-07-ecotome-sysconfig-updates/script/SetBatcher.s.sol b/mainnet/2024-03-07-ecotome-sysconfig-updates/script/SetBatcher.s.sol
new file mode 100644
index 00000000..c8ec7900
--- /dev/null
+++ b/mainnet/2024-03-07-ecotome-sysconfig-updates/script/SetBatcher.s.sol
@@ -0,0 +1,39 @@
+// SPDX-License-Identifier: MIT
+pragma solidity 0.8.15;
+
+import "@eth-optimism-bedrock/src/L1/SystemConfig.sol";
+import "@base-contracts/script/universal/MultisigBuilder.sol";
+
+contract SetBatcherAddr is MultisigBuilder {
+    address constant internal NEW_BATCHER = vm.envAddress("NEW_BATCHER_ADDR"); // TODO: define NEW_BATCHER_ADDR=xxx in the .env file
+    address constant internal SYSTEM_CONFIG = vm.envAddress("SYSTEM_CONFIG_ADDR"); // TODO: define SYSTEM_CONFIG_ADDR=xxx in the .env file
+    address internal SYSTEM_CONFIG_OWNER = vm.envAddress("SYSTEM_CONFIG_OWNER"); // TODO: define SYSTEM_CONFIG_OWNER=xxx in the .env file
+
+
+    function _postCheck() internal override view {
+        SystemConfig systemConfig = SystemConfig(SYSTEM_CONFIG);
+        bytes32 batcherHash = bytes32(abi.encode(NEW_BATCHER));
+        require(systemConfig.batcherHash() == batcherHash, "SetBatcherAddr: batcherHash not set correctly");
+    }
+
+    function _buildCalls() internal override view returns (IMulticall3.Call3[] memory) {
+        IMulticall3.Call3[] memory calls = new IMulticall3.Call3[](1);
+
+        bytes32 batcherHash = bytes32(abi.encode(NEW_BATCHER));
+
+        calls[0] = IMulticall3.Call3({
+            target: SYSTEM_CONFIG,
+            allowFailure: false,
+            callData: abi.encodeCall(
+                SystemConfig.setBatcherHash,
+                (batcherHash)
+            )
+        });
+
+        return calls;
+    }
+
+    function _ownerSafe() internal override view returns (address) {
+        return SYSTEM_CONFIG_OWNER;
+    }
+}
\ No newline at end of file
diff --git a/mainnet/2024-03-07-ecotome-sysconfig-updates/script/SetupNewProposer.s.sol b/mainnet/2024-03-07-ecotome-sysconfig-updates/script/SetupNewProposer.s.sol
new file mode 100644
index 00000000..7903b2ed
--- /dev/null
+++ b/mainnet/2024-03-07-ecotome-sysconfig-updates/script/SetupNewProposer.s.sol
@@ -0,0 +1,42 @@
+// SPDX-License-Identifier: MIT
+pragma solidity 0.8.15;
+
+import "@eth-optimism-bedrock/contracts/L1/L2OutputOracle.sol";
+import "forge-std/Script.sol";
+
+contract SetupNewProposer is Script {
+    address constant internal NEW_PROPOSER = vm.envUint("NEW_PROPOSER"); // TODO: define NEW_PROPOSER=xxx in the .env file
+    address constant internal DEPLOYER = vm.envAddress("DEPLOYER"); // TODO: define DEPLOYER=xxx in the .env file
+    address constant internal L2_OUTPUT_ORACLE_PROXY = vm.envAddress("L2_OUTPUT_ORACLE_PROXY"); // TODO: define L2_OUTPUT_ORACLE_PROXY=xxx in the .env file
+
+    function run() public {
+        L2OutputOracle existingL2OO = L2OutputOracle(L2_OUTPUT_ORACLE_PROXY);
+        uint256 oldSubmissionInterval = existingL2OO.SUBMISSION_INTERVAL();
+        uint256 oldL2BlockTime = existingL2OO.L2_BLOCK_TIME();
+        uint256 oldFinalizationPeriodSeconds = existingL2OO.FINALIZATION_PERIOD_SECONDS();
+        uint256 startingBlockNumber = existingL2OO.startingBlockNumber();
+        uint256 startingTimestamp = existingL2OO.startingTimestamp();
+        address oldProposer = existingL2OO.PROPOSER();
+        address oldChallenger = existingL2OO.CHALLENGER();
+
+        console.log(oldProposer);
+        console.log(NEW_PROPOSER);
+
+        // Deploy L2OutputOracle new implementation wiht the new submission interval
+        vm.broadcast(DEPLOYER);
+        L2OutputOracle l2OutputOracleImpl = new L2OutputOracle({
+            _submissionInterval: oldSubmissionInterval,
+            _l2BlockTime: oldL2BlockTime,
+            _startingBlockNumber: startingBlockNumber,
+            _startingTimestamp: startingTimestamp,
+            _proposer: NEW_PROPOSER,
+            _challenger: oldChallenger,
+            _finalizationPeriodSeconds: oldFinalizationPeriodSeconds            
+        });
+
+        require(l2OutputOracleImpl.L2_BLOCK_TIME() == oldL2BlockTime, "Deploy: l2OutputOracle l2BlockTime is incorrect");
+        require(l2OutputOracleImpl.PROPOSER() == NEW_PROPOSER, "Deploy: l2OutputOracle proposer is incorrect");
+
+        console.logAddress(address(l2OutputOracleImpl));
+    }
+}
\ No newline at end of file
diff --git a/mainnet/2024-03-07-ecotome-sysconfig-updates/script/UnpausePortal.s.sol b/mainnet/2024-03-07-ecotome-sysconfig-updates/script/UnpausePortal.s.sol
new file mode 100644
index 00000000..0516fe30
--- /dev/null
+++ b/mainnet/2024-03-07-ecotome-sysconfig-updates/script/UnpausePortal.s.sol
@@ -0,0 +1,33 @@
+// SPDX-License-Identifier: MIT
+pragma solidity 0.8.15;
+
+import "@base-contracts/script/universal/MultisigBuilder.sol";
+import "@eth-optimism-bedrock/contracts/L1/OptimismPortal.sol";
+
+contract UnpausePortal is MultisigBuilder {
+    address constant internal OPTIMISM_PORTAL_PROXY = vm.envAddress("OPTIMISM_PORTAL_PROXY"); // TODO: define OPTIMISM_PORTAL_PROXY=xxx in the .env file
+    address constant internal GUARDIAN = vm.envAddress("GUARDIAN"); // TODO: define GUARDIAN=xxx in the .env file
+
+    function _postCheck() internal override view {
+        OptimismPortal optimismPortal = OptimismPortal(payable(OPTIMISM_PORTAL_PROXY));
+        require(optimismPortal.paused() == false, "UnpausePortal: Portal did not get unpaused");
+    }
+
+    function _buildCalls() internal override view returns (IMulticall3.Call3[] memory) {
+        IMulticall3.Call3[] memory calls = new IMulticall3.Call3[](1);
+
+        calls[0] = IMulticall3.Call3({
+            target: OPTIMISM_PORTAL_PROXY,
+            allowFailure: false,
+            callData: abi.encodeCall(
+                OptimismPortal.unpause, ()
+            )
+        });
+
+        return calls;
+    }
+
+    function _ownerSafe() internal override view returns (address) {
+        return GUARDIAN;
+    }
+}
diff --git a/mainnet/2024-03-07-ecotome-sysconfig-updates/script/UpdateProposer.s.sol b/mainnet/2024-03-07-ecotome-sysconfig-updates/script/UpdateProposer.s.sol
new file mode 100644
index 00000000..53aa4ad5
--- /dev/null
+++ b/mainnet/2024-03-07-ecotome-sysconfig-updates/script/UpdateProposer.s.sol
@@ -0,0 +1,38 @@
+// SPDX-License-Identifier: MIT
+pragma solidity 0.8.15;
+
+import "@eth-optimism-bedrock/src/universal/ProxyAdmin.sol";
+import "@base-contracts/script/universal/NestedMultisigBuilder.sol";
+
+contract UpdateProposer is NestedMultisigBuilder {
+    // TODO: this assumes a new L2OutputOracle implementation contract has already been deployed. See SetupNewProposer.s.sol.
+
+    address internal PROXY_ADMIN_CONTRACT = vm.envAddress("L1_PROXY_ADMIN"); // TODO: define L1_PROXY_ADMIN=xxx in the .env file
+    address internal PROXY_ADMIN_OWNER = vm.envAddress("L1_NESTED_SAFE"); // TODO: define L1_NESTED_SAFE=xxx in the .env file
+    address internal L2_OUTPUT_PROPOSER = vm.envAddress("L2_OUTPUT_PROPOSER"); // TODO: define L2_OUTPUT_PROPOSER=xxx in the .env file
+    address internal L2_OUTPUT_PROPOSER_NEW_IMPL = vm.envAddress("L2_OUTPUT_PROPOSER_NEW_IMPL"); // TODO: define L2_OUTPUT_PROPOSER_NEW_IMPL=xxx in the .env file
+
+    function _postCheck() internal override view {
+        ProxyAdmin proxyAdmin = ProxyAdmin(PROXY_ADMIN_CONTRACT);
+        require(proxyAdmin.getProxyImplementation(L2_OUTPUT_PROPOSER).codehash == L2_OUTPUT_PROPOSER_NEW_IMPL.codehash);
+    }
+
+    function _buildCalls() internal override view returns (IMulticall3.Call3[] memory) {
+        IMulticall3.Call3[] memory calls = new IMulticall3.Call3[](1);
+
+        calls[0] = IMulticall3.Call3({
+            target: PROXY_ADMIN_CONTRACT,
+            allowFailure: false,
+            callData: abi.encodeCall(
+                ProxyAdmin.upgrade,
+                (payable(L2_OUTPUT_PROPOSER), L2_OUTPUT_PROPOSER_NEW_IMPL)
+            )
+        });
+
+        return calls;
+    }
+
+    function _ownerSafe() internal override view returns (address) {
+        return PROXY_ADMIN_OWNER;
+    }
+}
\ No newline at end of file
diff --git a/mainnet/2024-03-07-sysconfig-updates/.github/workflows/test.yml b/mainnet/2024-03-07-sysconfig-updates/.github/workflows/test.yml
deleted file mode 100644
index 9282e829..00000000
--- a/mainnet/2024-03-07-sysconfig-updates/.github/workflows/test.yml
+++ /dev/null
@@ -1,34 +0,0 @@
-name: test
-
-on: workflow_dispatch
-
-env:
-  FOUNDRY_PROFILE: ci
-
-jobs:
-  check:
-    strategy:
-      fail-fast: true
-
-    name: Foundry project
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          submodules: recursive
-
-      - name: Install Foundry
-        uses: foundry-rs/foundry-toolchain@v1
-        with:
-          version: nightly
-
-      - name: Run Forge build
-        run: |
-          forge --version
-          forge build --sizes
-        id: build
-
-      - name: Run Forge tests
-        run: |
-          forge test -vvv
-        id: test
diff --git a/mainnet/2024-03-07-sysconfig-updates/.gitignore b/mainnet/2024-03-07-sysconfig-updates/.gitignore
deleted file mode 100644
index 85198aaa..00000000
--- a/mainnet/2024-03-07-sysconfig-updates/.gitignore
+++ /dev/null
@@ -1,14 +0,0 @@
-# Compiler files
-cache/
-out/
-
-# Ignores development broadcast logs
-!/broadcast
-/broadcast/*/31337/
-/broadcast/**/dry-run/
-
-# Docs
-docs/
-
-# Dotenv file
-.env
diff --git a/mainnet/2024-03-07-sysconfig-updates/README.md b/mainnet/2024-03-07-sysconfig-updates/README.md
deleted file mode 100644
index 9265b455..00000000
--- a/mainnet/2024-03-07-sysconfig-updates/README.md
+++ /dev/null
@@ -1,66 +0,0 @@
-## Foundry
-
-**Foundry is a blazing fast, portable and modular toolkit for Ethereum application development written in Rust.**
-
-Foundry consists of:
-
--   **Forge**: Ethereum testing framework (like Truffle, Hardhat and DappTools).
--   **Cast**: Swiss army knife for interacting with EVM smart contracts, sending transactions and getting chain data.
--   **Anvil**: Local Ethereum node, akin to Ganache, Hardhat Network.
--   **Chisel**: Fast, utilitarian, and verbose solidity REPL.
-
-## Documentation
-
-https://book.getfoundry.sh/
-
-## Usage
-
-### Build
-
-```shell
-$ forge build
-```
-
-### Test
-
-```shell
-$ forge test
-```
-
-### Format
-
-```shell
-$ forge fmt
-```
-
-### Gas Snapshots
-
-```shell
-$ forge snapshot
-```
-
-### Anvil
-
-```shell
-$ anvil
-```
-
-### Deploy
-
-```shell
-$ forge script script/Counter.s.sol:CounterScript --rpc-url <your_rpc_url> --private-key <your_private_key>
-```
-
-### Cast
-
-```shell
-$ cast <subcommand>
-```
-
-### Help
-
-```shell
-$ forge --help
-$ anvil --help
-$ cast --help
-```
diff --git a/mainnet/2024-03-07-sysconfig-updates/foundry.toml b/mainnet/2024-03-07-sysconfig-updates/foundry.toml
deleted file mode 100644
index 25b918f9..00000000
--- a/mainnet/2024-03-07-sysconfig-updates/foundry.toml
+++ /dev/null
@@ -1,6 +0,0 @@
-[profile.default]
-src = "src"
-out = "out"
-libs = ["lib"]
-
-# See more config options https://github.com/foundry-rs/foundry/blob/master/crates/config/README.md#all-options
diff --git a/mainnet/2024-03-07-sysconfig-updates/script/Counter.s.sol b/mainnet/2024-03-07-sysconfig-updates/script/Counter.s.sol
deleted file mode 100644
index df9ee8b0..00000000
--- a/mainnet/2024-03-07-sysconfig-updates/script/Counter.s.sol
+++ /dev/null
@@ -1,12 +0,0 @@
-// SPDX-License-Identifier: UNLICENSED
-pragma solidity ^0.8.13;
-
-import {Script, console} from "forge-std/Script.sol";
-
-contract CounterScript is Script {
-    function setUp() public {}
-
-    function run() public {
-        vm.broadcast();
-    }
-}
diff --git a/mainnet/2024-03-07-sysconfig-updates/src/Counter.sol b/mainnet/2024-03-07-sysconfig-updates/src/Counter.sol
deleted file mode 100644
index aded7997..00000000
--- a/mainnet/2024-03-07-sysconfig-updates/src/Counter.sol
+++ /dev/null
@@ -1,14 +0,0 @@
-// SPDX-License-Identifier: UNLICENSED
-pragma solidity ^0.8.13;
-
-contract Counter {
-    uint256 public number;
-
-    function setNumber(uint256 newNumber) public {
-        number = newNumber;
-    }
-
-    function increment() public {
-        number++;
-    }
-}
diff --git a/mainnet/2024-03-07-sysconfig-updates/test/Counter.t.sol b/mainnet/2024-03-07-sysconfig-updates/test/Counter.t.sol
deleted file mode 100644
index 54b724f7..00000000
--- a/mainnet/2024-03-07-sysconfig-updates/test/Counter.t.sol
+++ /dev/null
@@ -1,24 +0,0 @@
-// SPDX-License-Identifier: UNLICENSED
-pragma solidity ^0.8.13;
-
-import {Test, console} from "forge-std/Test.sol";
-import {Counter} from "../src/Counter.sol";
-
-contract CounterTest is Test {
-    Counter public counter;
-
-    function setUp() public {
-        counter = new Counter();
-        counter.setNumber(0);
-    }
-
-    function test_Increment() public {
-        counter.increment();
-        assertEq(counter.number(), 1);
-    }
-
-    function testFuzz_SetNumber(uint256 x) public {
-        counter.setNumber(x);
-        assertEq(counter.number(), x);
-    }
-}